CN109992155B - Display panel and display device for fingerprint identification - Google Patents
Display panel and display device for fingerprint identification Download PDFInfo
- Publication number
- CN109992155B CN109992155B CN201910228601.0A CN201910228601A CN109992155B CN 109992155 B CN109992155 B CN 109992155B CN 201910228601 A CN201910228601 A CN 201910228601A CN 109992155 B CN109992155 B CN 109992155B
- Authority
- CN
- China
- Prior art keywords
- layer
- display panel
- organic film
- pressure
- conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel and a display device for fingerprint identification, wherein the display panel comprises an array substrate and a plurality of light-emitting units arranged on the array substrate, the array substrate comprises a substrate and a thin film transistor layer arranged on the substrate, the substrate comprises at least two organic film layers which are arranged in a stacked mode, a conductive shading layer is arranged between the at least two organic film layers and is divided into a plurality of pressure-sensitive electrodes which are mutually spaced, and imaging holes which can be penetrated by light rays are formed in the pressure-sensitive electrodes.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device for fingerprint identification.
Background
Fingerprint identification technology is through setting up the positive fingerprint of display screen is gathered to the fingerprint identification device at the display screen back to accomplish fingerprint identification's technique, wherein, in the fingerprint identification technique, mainly include supersound fingerprint identification and optics fingerprint identification, in the optics fingerprint identification technique, specifically increase the light shield layer in the array substrate of display screen, and set up the formation of image hole in the light shield layer, through aperture formation of image principle, with the fingerprint sensor of fingerprint formation of image in OLED module below, accomplish fingerprint identification.
At present, there are two main ways to add a light shielding layer in an array substrate of a display screen, one of which is to arrange a conductive light shielding layer on an organic film layer (i.e. PI layer) of the array substrate, and the other is to use one of metal layers in the array substrate as a light shielding layer, for example, a Gate metal layer, a source metal layer or a capacitor electrode metal layer in an array process as a light shielding layer, and then an imaging hole for light to pass through is formed in the light shielding layer, so that light reflected by a finger passes through the imaging hole to form a fingerprint image on a fingerprint sensor, and finally, the fingerprint identification is completed by comparing the fingerprint image with a pre-stored fingerprint image.
However, in the two arrangements, the capacitive coupling between the conductive light shielding layer and the circuits on the array substrate is easily caused, so that the driving load of the pixel circuit is large.
Disclosure of Invention
In order to solve at least one of the problems mentioned in the background art, the present invention provides a display panel and a display device for fingerprint identification, which reduce the parasitic capacitance between the conductive light shielding layer and the circuit, so that the driving load of the pixel circuit is reduced, and the integration of the pressure sensing function is realized.
In order to achieve the above object, the present invention provides a display panel for fingerprint recognition, comprising: comprises an array substrate and a plurality of light-emitting units arranged on the array substrate, wherein the array substrate comprises a substrate and a thin film transistor layer arranged on the substrate,
the substrate comprises at least two organic film layers which are stacked, a conductive shading layer is arranged between the at least two organic film layers, the conductive shading layer is divided into a plurality of pressure-sensitive electrodes which are spaced mutually, and imaging holes for light to penetrate through are formed in the pressure-sensitive electrodes.
The display panel for fingerprint identification provided by the invention has the advantages that the substrate comprises at least two organic film layers which are arranged in a laminated manner, the conductive shading layer is arranged between the at least two organic film layers, so that the organic film layers are added on the conductive shading layer, the thickness of the whole substrate is increased, and the distance between the conductive shading layer and the pixel circuit device on the array substrate is increased due to the addition of the organic film layers, so that the problem of capacitance coupling between the conductive shading layer and the circuit device on the array substrate is avoided, and thus, the parasitic capacitance between the conductive shading layer and the circuit device is reduced, the driving load of the pixel circuit is lightened, meanwhile, the conductive shading layer is divided into a plurality of mutually spaced pressure sensing electrodes, and imaging holes which can be penetrated by light rays are formed in the pressure sensing electrodes, so that the conductive shading layer is reused as the pressure sensing electrodes, and the additional arrangement of the pressure sensing electrodes in the display panel is avoided.
The invention also provides a display panel for fingerprint identification, which comprises an array substrate and a plurality of light-emitting units arranged on the array substrate, wherein the array substrate comprises a substrate and a thin film transistor layer arranged on the substrate,
the substrate comprises at least two organic film layers which are arranged in a stacked mode, a conductive shading layer is arranged between the at least two organic film layers, pressure sensing electrodes which are arranged at a plurality of intervals and insulated by the conductive shading layer are arranged on the conductive shading layer, imaging holes are formed in the conductive shading layer, and light transmitting holes are formed in positions, corresponding to the imaging holes, of the pressure sensing electrodes.
According to the display panel provided by the invention, the substrate comprises at least two organic film layers which are arranged in a laminated mode, the conductive shading layer is arranged between the at least two organic film layers, so that the organic film layers are added on the conductive shading layer, the thickness of the whole substrate is increased, the distance between the conductive shading layer and the pixel circuit device on the array substrate is increased due to the addition of the organic film layers, the problem of capacitance coupling between the conductive shading layer and the circuit on the array substrate is solved, parasitic capacitance between the conductive shading layer and the circuit device is reduced or avoided, the driving load of the pixel circuit is lightened, meanwhile, the pressure sensing electrodes which are insulated from the conductive shading layer and are mutually spaced are arranged on the conductive shading layer, the display panel is integrated with a pressure sensing function, the difficulty in arranging the space between the pressure sensing electrodes is reduced, the shading effect of the conductive shading layer on light rays which pass through the space between the pressure sensing electrodes is achieved, the display panel provided by the invention reduces or avoids the parasitic capacitance between the conductive shading layer and the circuit device, the purpose of integrating the pressure sensing function on the conductive shading layer is achieved, the arrangement difficulty in arranging the space between the pressure sensing electrodes is reduced, and the problem that the pixel circuit device is easy to be coupled due to the existing fingerprint identification is solved.
In the above display panel for fingerprint recognition, optionally, the spacing region between the pressure-sensitive electrodes corresponds to a non-light-transmitting region in the display panel; preferably, the first and second liquid crystal materials are,
the spacing region between each pressure-sensitive electrode corresponds to one of the electrode traces of the storage capacitor in the display panel, and/or the spacing region between each pressure-sensitive electrode corresponds to the scanning line in the display panel, and/or the spacing region between each pressure-sensitive electrode corresponds to the data line in the display panel.
In the foregoing display panel for fingerprint identification, optionally, the substrate includes a first organic film layer and a second organic film layer that are sequentially stacked, the conductive light shielding layer is disposed on the first organic film layer, and the second organic film layer is located on the conductive light shielding layer.
In the above display panel for fingerprint recognition, optionally, the thickness of the second organic film layer is greater than that of the first organic film layer.
In the above display panel for fingerprint identification, optionally, a first inorganic film layer is further disposed between the at least two organic film layers, and the conductive light shielding layer is disposed on the first inorganic film layer.
In the above display panel for fingerprint recognition, optionally, each of the pressure-sensitive electrodes has a pressure-sensitive electrode lead, the pressure-sensitive electrode lead is used for electrically connecting the pressure-sensitive electrode with a circuit board, and the pressure-sensitive electrode lead corresponds to a non-light-transmitting area in the display panel.
In the above display panel for fingerprint recognition, optionally, the substrate further includes:
and the support film is arranged on one surface of the first organic film layer, which is back to the conductive shading layer.
In the above display panel for fingerprint recognition, optionally, the substrate further includes:
the buffer layer is arranged on the second organic film layer, and the thin film transistor layer is arranged on the buffer layer.
In the above display panel for fingerprint recognition, optionally, the substrate further includes:
a second inorganic film layer disposed between the buffer layer and the second organic film layer.
The invention also provides a display device, which comprises a fingerprint identification module and any one of the display panels, wherein the fingerprint identification module is positioned below the display panel and corresponds to the imaging hole in the display panel, so that light reflected by a finger is transmitted to the fingerprint identification module through the imaging hole.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1A is a schematic cross-sectional view of a display panel for fingerprint identification according to an embodiment of the present invention;
fig. 1B is a schematic top view of a conductive light shielding layer in a display panel for fingerprint identification according to an embodiment of the invention;
fig. 1C is a schematic cross-sectional view of a display panel for fingerprint identification according to an embodiment of the present invention;
fig. 2A is a schematic cross-sectional view of a display panel for fingerprint identification according to a second embodiment of the present invention;
fig. 2B is a schematic top view of a conductive light shielding layer in a display panel for fingerprint identification according to a second embodiment of the present invention;
fig. 2C is a schematic cross-sectional view of a display panel for fingerprint identification according to a second embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure diagram of a display panel and a fingerprint identification module in a display device according to a third embodiment of the present invention.
Description of the reference numerals:
10-a substrate; 11-a support membrane; 12-an organic film layer; 12 a-a first organic film layer;
12 b-a second organic film layer; 13 a-a first inorganic film layer; 13 b-a second inorganic film layer;
14-a conductive light shielding layer; 141-an imaging aperture; 142-a pressure sensing electrode; 1421-pressure sensitive electrode leads;
1422-light hole; 143-fingerprint identification area; 20-a thin-film transistor layer; 21-a drain region;
22-a channel region; a 23-source region; 24-a gate insulating layer; 25. 28-a dielectric layer; 26-gate layer;
27-a via hole; 201-a gate metal layer; 202-source metal layer; 30-a planarization layer; 40-a pixel defining layer;
50-a light-emitting unit; 51-a first electrode layer; 52-a light emitting layer; 53-a second electrode layer;
60-fingerprint identification module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are illustrative of some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the embodiments of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Example one
Fig. 1A is a schematic cross-sectional structure diagram of a display panel for fingerprint identification according to a first embodiment of the present invention, fig. 1B is a schematic top view structure diagram of a conductive light shielding layer in the display panel for fingerprint identification according to the first embodiment of the present invention, and fig. 1C is a schematic cross-sectional structure diagram of another display panel for fingerprint identification according to the first embodiment of the present invention.
The inventor of the present invention finds in the course of practical research that the current fingerprint identification display device has a problem that the pixel circuit driving load is large, and the inventor finds that the reason for the problem is that: among the present fingerprint identification display device, the metal light shield layer often establishes on the PI layer in the array substrate or is the metal light shield layer with one of them metal level in the array substrate, but the circuit (being equivalent to the metal level promptly) distance in metal light shield layer and the array substrate is often less to make and appear capacitive coupling's problem easily with the circuit on the array substrate, and then lead to pixel circuit drive load great, and among the prior art, the metal light shield layer only plays the shading effect in the fingerprint identification process, and the function is single.
Based on the above findings and the existing technical problems, the embodiments of the present invention provide the following solutions: referring to fig. 1A to 1C, an embodiment of the present invention provides a display device for fingerprint identification, where the display panel includes an array substrate and a plurality of light emitting units 50 disposed on the array substrate, where the array substrate includes a substrate 10 and a Thin Film Transistor (TFT) layer 20 disposed on the substrate 10, where the substrate 10 includes at least two organic Film layers 12 stacked, that is, in this embodiment, the organic Film layers 12 in the substrate 10 are at least two layers, in this embodiment, the organic Film layers 12 may be specifically PI Film layers, and a conductive light shielding layer 14 is disposed between at least two organic Film layers 12, that is, in this embodiment, the conductive light shielding layer 14 is disposed between at least two organic Film layers 12, so that the organic Film layers 12 are added on top of the conductive light shielding layer 14, so that the thickness of the entire substrate 10 is increased, and when a pixel circuit is disposed on the array substrate, the distance between the conductive light shielding layer 14 and a pixel circuit device on the array substrate is increased due to the organic Film layers 12, so that the problem of capacitive coupling between the conductive light shielding layer 14 and the circuit device on the array substrate is not likely to occur, and thus reducing or avoiding a parasitic load of the pixel circuit 14 and reducing a load of the pixel circuit.
Therefore, in this embodiment, the substrate 10 includes at least two organic film layers 12, so that when the conductive light shielding layer 14 is disposed in the substrate 10, the distance between the conductive light shielding layer 14 and the circuit on the array substrate is increased, and the problem of capacitive coupling between the conductive light shielding layer 14 and the circuit on the array substrate is not likely to occur, so that the parasitic capacitance between the conductive light shielding layer 14 and the circuit device is reduced or avoided, and further the driving load of the pixel circuit is reduced.
Meanwhile, in this embodiment, the conductive light shielding layer 14 may be specifically a metal layer and has a conductive function, so in this embodiment, the conductive light shielding layer 14 is divided into a plurality of pressure-sensitive electrodes 142 spaced from each other, that is, the conductive light shielding layer 14 is also reused as a pressure-sensitive touch electrode while shielding light, so that the conductive light shielding layer 14 may be used as a light-shielding film layer and may also be used as a pressure-sensitive touch electrode, the pressure-sensitive electrodes 142 and the conductive light shielding layer 14 are integrated into one layer, and functions are increased, thereby avoiding additional arrangement of the pressure-sensitive electrodes 142 in the display panel, in this embodiment, in order to implement fingerprint identification, specifically, imaging holes 141 through which light can pass are formed in the pressure-sensitive electrodes 142, during the arrangement, imaging holes 141 may be specifically formed in one of the pressure-sensitive electrodes 142, and during fingerprint identification, light reflected by a finger can pass through the imaging holes 141 and enter the fingerprint identification module to form a fingerprint image, so that the display panel provided by this embodiment also integrates a pressure-sensitive touch function on the basis of arranging the conductive light shielding layer 14.
In this embodiment, the pressure-sensitive electrode 142 provided with the imaging hole 141 is specifically selected according to a position corresponding to a fingerprint identification area provided on the terminal, and it needs to be satisfied that when a finger is placed on the fingerprint identification area of the terminal, light reflected by the finger can pass through the imaging hole 141, where in this embodiment, the number of the imaging holes 141 is specifically set according to practical applications, and meanwhile, the size of the imaging hole 141 is also selected according to practical situations, in this embodiment, as shown in fig. 1B, the imaging hole 141 is specifically a round hole, and the diameter of the round hole can be about 5um, or in this embodiment, the shape of the imaging hole 141 can also be a square hole or a hole with other shapes.
In this embodiment, when the conductive light shielding layer 14 is divided into a plurality of pressure sensing electrodes 142, the pressure sensing electrode 142 needs to realize the pressure sensing function together with another pressure sensing electrode, in this embodiment, another pressure sensing electrode can multiplex a certain metal layer in the array substrate into another pressure sensing electrode, for example, a certain electrode in the storage capacitor can be used as the pressure sensing electrode, or a gate metal layer or a source metal layer can also be used as another pressure sensing electrode, so that the pressure sensing electrode 142 divided by the conductive light shielding layer 14 and another metal layer in the array substrate realize the pressure sensing function together, so that the pressure sensing electrode 142 does not need to be additionally added when the pressure sensing function is realized, thereby reducing the manufacturing process of the display panel.
In the present embodiment, as shown in fig. 1B, the shape of the pressure-sensitive electrodes 142 obtained by dividing the conductive light shielding layer 14 is specifically a square, and the size of the square may be 15 × 15cm, wherein in the present embodiment, the number and size of the pressure-sensitive electrodes 142 obtained by dividing the conductive light shielding layer 14 are specifically selected according to the actual application, for example, the shape of the pressure-sensitive electrodes 142 may be other shapes, such as a rectangle or other polygons, and the size of the pressure-sensitive electrodes 142 is smaller, so that the realized pressure-sensitive accuracy is higher.
In this embodiment, as shown in fig. 1A, the light emitting unit 50 specifically includes a first electrode layer 51, a second electrode layer 53, and a light emitting layer 52 located between the first electrode layer 51 and the second electrode layer 53, wherein one of the first electrode layer 51 and the second electrode layer 53 is a cathode layer, and the other is an anode layer, and the light emitting units 50 are specifically separated by a pixel defining layer 40.
In this embodiment, as shown in fig. 1A, the thin-film transistor layer 20 specifically includes a gate layer 26, a gate insulating layer 24, an active layer and a source/drain electrode layer, the active layer includes a source region 23, a drain region 21 and a channel region 22, the drain region 21 is electrically connected to the first electrode layer 51 through a drain electrode located in the via hole 27, the source region 23 is electrically connected to the data line through a source electrode located in the via hole 27, and the gate layer 26 is electrically connected to the scan line. The data line and the source/drain electrode layer can be made of the same metal layer (such as a source metal layer); the scan line and the gate electrode layer can be made of the same metal layer (e.g., a gate metal layer). As shown in fig. 1A, an upper electrode of the storage capacitor may be fabricated on the same layer as a source metal layer 202, a lower electrode of the storage capacitor may be fabricated on the same layer as a gate metal layer 201, a dielectric layer 25 is disposed between the source metal layer 202 and the gate metal layer 201 for insulation, the source metal layer 202 covers a dielectric layer 28, the thin film transistor layer 20 finally covers a planarization layer 30, and a first electrode layer 51 is disposed on the planarization layer 30, where the rest of the thin film transistor layer 20 may specifically refer to a TFT structure in an existing array substrate, which is not described in detail in this embodiment.
Therefore, the present embodiment provides a display panel, in which the substrate 10 includes at least two organic film layers 12 stacked one on another, the conductive light shielding layer 14 is disposed between the at least two organic film layers 12, such that the organic film layer 12 is added on the conductive light shielding layer 14, the thickness of the entire substrate 10 is increased, and the distance between the conductive light shielding layer 14 and the pixel circuit device on the array substrate is increased due to the addition of the organic film layer 12, such that the problem of capacitive coupling between the conductive light shielding layer 14 and the circuit device on the array substrate is not likely to occur, such that the parasitic capacitance between the conductive light shielding layer 14 and the circuit device is reduced or avoided, such that the driving load of the pixel circuit is reduced, and at the same time, the conductive shading layer 14 is divided into a plurality of pressure-sensitive electrodes 142 which are spaced from each other, and imaging holes 141 which can be penetrated by light rays are formed in the pressure-sensitive electrodes 142, so that the conductive shading layer 14 is multiplexed into the pressure-sensitive electrodes 142, and the pressure-sensitive electrodes are prevented from being additionally arranged in the display panel, therefore, the display panel provided by the embodiment reduces or avoids parasitic capacitance between the conductive shading layer 14 and a circuit device, simultaneously realizes the purpose of integrating the pressure-sensitive function on the basis of the conductive shading layer 14, and solves the problem that the driving load of a pixel circuit is large due to the fact that the conductive shading layer 14 is easily capacitively coupled with the circuit in the existing fingerprint identification device.
On the basis of the foregoing embodiment, in this embodiment, when the conductive light shielding layer 14 is divided into the plurality of pressure-sensitive electrodes 142, a certain interval often exists between the pressure-sensitive electrodes 142, and when light passes through the interval, interference on fingerprint imaging is caused, for this reason, when the conductive light shielding layer 14 is divided in this embodiment, the interval between the divided pressure-sensitive electrodes 142 corresponds to the non-light-transmitting area in the display panel, so that the non-light-transmitting area shields the light, and the light is prevented from passing through the interval between the pressure-sensitive electrodes 142, where in this embodiment, the non-light-transmitting area in the display panel may specifically be some metal traces in the display panel.
On the basis of the above embodiment, in this embodiment, specifically, the spacing region between the pressure-sensitive electrodes 142 corresponds to one of the electrode traces of the storage capacitor in the display panel, and/or the spacing region between the pressure-sensitive electrodes 142 corresponds to the scan line in the display panel, and/or the spacing region between the pressure-sensitive electrodes 142 corresponds to the data line in the display panel, so that the light cannot pass through the spacing between the pressure-sensitive electrodes 142 under the blocking of the scan line and the data line.
On the basis of the foregoing embodiment, in this embodiment, as shown in fig. 1C, the substrate 10 includes a first organic film layer 12a and a second organic film layer 12b that are sequentially stacked, when the organic film layer 12 is a PI layer, the substrate 10 in the array substrate provided in this embodiment is a double-layer PI layer, the conductive light shielding layer 14 is disposed on the first organic film layer 12a, and the second organic film layer 12b is disposed on the conductive light shielding layer 14, so as to compare with the prior art, the second organic film layer 12b is added between the conductive light shielding layer 14 and the circuits in the array substrate, so that the distance between the conductive light shielding layer 14 and the array substrate is increased, and thus the problem of capacitive coupling between the conductive light shielding layer 14 and the circuits on the array substrate is not likely to occur, and thus the parasitic capacitance between the conductive light shielding layer 14 and the circuit devices is reduced or avoided, and the driving load of the pixel circuit is reduced.
In this embodiment, in order to further increase the distance between the conductive light shielding layer 14 and the circuit in the array substrate, specifically, as shown in fig. 1C, the thickness of the second organic film layer 12b is greater than the thickness of the first organic film layer 12a, so that the distance between the conductive light shielding layer 14 and the circuit in the array substrate is greater, and thus the capacitive coupling between the conductive light shielding layer 14 and the circuit in the array substrate is less likely to occur, so that the driving load of the pixel electrode can be further reduced.
On the basis of the above embodiment, in this embodiment, since the conductive light shielding layer 14 is an inorganic film layer, when the conductive light shielding layer 14 is located between at least two organic film layers 12, the adhesion between the conductive light shielding layer 14 and the organic film layers 12 is often weak due to different properties, and the conductive light shielding layer 14 and the organic film layers 12 are easy to crack, for this reason, in this embodiment, a first inorganic film layer 13a is further disposed between at least two organic film layers 12, and the conductive light shielding layer 14 is disposed on the first inorganic film layer 13a, so that the adhesion between the conductive light shielding layer 14 and the first inorganic film layer 13a is relatively large due to the same properties, and the conductive light shielding layer 14 and the first inorganic film layer 13a are not easy to crack, in this embodiment, as shown in fig. 1C, the first inorganic film layer 13a is disposed on the first organic film layer 12a, the conductive light shielding layer 14 is disposed on the first inorganic film layer 13a, and the second organic film layer 12b is disposed on the conductive light shielding layer 14.
In this embodiment, as shown in fig. 1C, the substrate 10 further includes: the buffer layer 15, the buffer layer 15 is arranged on the second organic film layer 12b, and the TFT layer is arranged on the buffer layer 15, so that the second organic film layer 12b and the buffer layer 15 are separated between the conductive light shielding layer 14 and the circuit on the array substrate, so that the distance between the conductive light shielding layer 14 and the circuit on the array substrate is larger, and the parasitic capacitance between the conductive light shielding layer 14 and the circuit device is further reduced or avoided.
In this embodiment, as shown in fig. 1C, the substrate 10 further includes: the second inorganic film layer 13b is arranged between the buffer layer 15 and the second organic film layer 12b, and three film layers, namely the second organic film layer 12b, the second inorganic film layer 13b and the buffer layer 15, are arranged between the conductive shading layer 14 and the circuit on the array substrate at intervals, so that the distance between the conductive shading layer 14 and the circuit on the array substrate is larger, and the parasitic capacitance between the conductive shading layer 14 and a circuit device is further reduced or avoided.
In this embodiment, in order to protect the first organic film layer 12a and support the substrate 10, as shown in fig. 1C, the substrate 10 further includes: the supporting film 11 is disposed on a surface of the first organic film layer 12a opposite to the conductive light shielding layer 14, and the supporting film 11 can protect the first organic film layer 12a and prevent the first organic film layer 12a from being scratched, wherein in this embodiment, the supporting film 11 is specifically attached to the back surface of the first organic film layer 12a after the display panel is peeled off from the glass substrate.
In addition to the above embodiments, in the present embodiment, the pressure-sensitive electrode 142 has the opening area corresponding to the fingerprint identification area 143 on the display panel, as shown in fig. 1B, in the present embodiment, the position of the fingerprint identification area 143 on the display panel for placing a finger corresponding to the pressure-sensitive electrode 142 defines the opening area, and the opening area is opened as the imaging hole 141.
On the basis of the above embodiments, in this embodiment, as shown in fig. 1B, each of the pressure sensing electrodes 142 has a pressure sensing electrode lead 1421, the pressure sensing electrode lead 1421 is used to electrically connect the pressure sensing electrode 142 to the circuit board, and the pressure sensing electrode lead 1421 corresponds to a non-light-transmitting region in the display panel, so as to avoid the influence of the pressure sensing electrode lead 1421 on the display region of the display panel, wherein, in this embodiment, the pressure sensing electrode lead 1421 is caused along the interval between the pressure sensing electrodes 142 or the edge of the pressure sensing electrode, and the pressure sensing electrode lead 1421 is used to conduct the pressure sensing electrode 142 to the circuit board.
Example two
Fig. 2A is a schematic cross-sectional structure diagram of a display panel for fingerprint identification according to a second embodiment of the present invention, fig. 2B is a schematic top view structure diagram of a conductive light shielding layer in the display panel for fingerprint identification according to the second embodiment of the present invention, and fig. 2C is a schematic cross-sectional structure diagram of another display panel for fingerprint identification according to the second embodiment of the present invention.
As shown in fig. 2A and fig. 2B, the display panel for fingerprint identification according to this embodiment includes an array substrate and a plurality of light emitting units 50 disposed on the array substrate, where the array substrate includes a substrate 10 and a Thin Film Transistor (TFT) layer disposed on the substrate 10, where the structure of the TFT layer is specifically described in the foregoing embodiments, and details are not repeated in this embodiment, the substrate 10 includes at least two organic Film layers 12 disposed in a stacked manner, that is, in this embodiment, the organic Film layers 12 in the substrate 10 are at least two layers, in this embodiment, the organic Film layers 12 may be PI Film layers, and a conductive light shielding layer 14 is disposed between at least two organic Film layers 12, that is, in this embodiment, the conductive light shielding layer 14 is disposed between at least two organic Film layers 12, such that the organic light shielding layer 12 is added on the conductive light shielding layer 14, such that the thickness of the entire substrate 10 is increased, and when a pixel circuit is disposed on the array substrate, a distance between the conductive light shielding layer 14 and a pixel circuit device on the array substrate is increased due to the organic Film layer 12, such that a distance between the conductive light shielding layer 14 and a pixel circuit device on the array substrate is increased, and a parasitic capacitance coupling between the conductive light shielding layer 14 is reduced, and a pixel circuit is not easily reduced, and a load circuit is reduced, and thus a problem of a parasitic load circuit is reduced.
Therefore, in this embodiment, the substrate 10 includes at least two organic film layers 12, so that when the conductive light shielding layer 14 is disposed in the substrate 10, the distance between the conductive light shielding layer 14 and the circuit on the array substrate is increased, and the problem of capacitive coupling between the conductive light shielding layer 14 and the circuit on the array substrate is not likely to occur, so as to reduce or avoid the parasitic capacitance between the conductive light shielding layer 14 and the circuit device, and further reduce the driving load of the pixel circuit.
Meanwhile, in this embodiment, in order to integrate the pressure sensing function in the display panel, specifically, the conductive light shielding layer 14 is provided with a plurality of pressure sensing electrodes 142 arranged at intervals and insulated from the conductive light shielding layer 14, that is, in this embodiment, the pressure sensing electrodes 142 are arranged on the conductive light shielding layer 14, and the pressure sensing electrodes 142 are insulated from the conductive light shielding layer 14, specifically, an insulating layer is arranged between the pressure sensing electrodes 142 and the conductive light shielding layer 14 to separate the pressure sensing electrodes 142 from the conductive light shielding layer 14, and in order to realize fingerprint identification, the imaging holes 141 arranged on the conductive light shielding layer 14, and light holes 1422 are arranged on the pressure sensing electrodes 142 at positions corresponding to the imaging holes 141, that is, the light holes 1422 are arranged on the pressure sensing electrodes 142, and the light holes 1422 can allow light reflected by fingers to pass through the pressure sensing electrodes 142 and the conductive light shielding layer 14, that in this embodiment, the light enters the imaging holes 141 after passing through the light holes 1422 and then passes through the imaging holes 141 and is transmitted to the fingerprint identification module, wherein in this embodiment, the pressure sensing holes 1422 are communicated with the imaging holes 142, and the non-contact with the conductive light shielding layer 14, and therefore, the imaging electrodes 142 and the imaging holes 142 are communicated with the non-contact.
In the above embodiment, when the conductive light shielding layer 14 is divided to form the pressure sensing electrodes 142, a certain interval is formed between the pressure sensing electrodes 142, and the interval needs to correspond to the non-transparent region in the display panel, so in the manufacturing process, it is necessary to consider whether the interval between the pressure sensing electrodes 142 corresponds to the non-transparent region, which increases the difficulty of the manufacturing process, and because the interval between the pressure sensing electrodes 142 does not completely correspond to the non-transparent region, some light can still pass through the interval between the pressure sensing electrodes 142. In this embodiment, because the pressure-sensitive electrodes 142 spaced from each other are located on the conductive light-shielding layer 14, when the space between the pressure-sensitive electrodes 142 does not correspond to the non-light-transmitting region, light can pass through the space between the pressure-sensitive electrodes 142, but under the blocking effect of the conductive light-shielding layer 14, the light cannot pass through the conductive light-shielding layer 14, so that interference of the light on fingerprint imaging is avoided, therefore, in this embodiment, by setting the pressure-sensitive electrodes 142 on the conductive light-shielding layer 14, the display panel integrates a pressure-sensitive function, the difficulty in setting the space between the pressure-sensitive electrodes 142 is reduced, and the shielding effect of the conductive light-shielding layer 14 on the light passing through the space between the pressure-sensitive electrodes 142 is realized.
Therefore, in the display panel provided by this embodiment, the substrate 10 includes at least two organic film layers 12 stacked, and the conductive light shielding layer 14 is disposed between the at least two organic film layers 12, so that the organic film layers 12 are added on the conductive light shielding layer 14, the thickness of the entire substrate 10 is increased, and the distance between the conductive light shielding layer 14 and the pixel circuit device on the array substrate is increased due to the addition of the organic film layers 12, so that the problem of capacitive coupling between the conductive light shielding layer 14 and the circuit device on the array substrate is not likely to occur, and thus the parasitic capacitance between the conductive light shielding layer 14 and the circuit device is reduced or avoided, and the driving load of the pixel circuit is reduced, and meanwhile, the mutually spaced pressure-sensitive electrodes 142 insulated from the conductive light shielding layer 14 are disposed on the conductive light shielding layer 14, so that the display panel integrates the pressure-sensitive function, reduces the difficulty in disposing the space between the pressure-sensitive electrodes 142, and realizes the shielding effect of the conductive light shielding layer 14 on the light passing through the space between the pressure-sensitive electrodes 142, and therefore, the display panel provided by this embodiment reduces or avoids the parasitic capacitance between the conductive light shielding layer 14 and the problem of the capacitive coupling between the conductive light shielding layer 14 and the circuit device, and solves the problem of the driving load caused by the capacitance of the conventional fingerprint identification device.
On the basis of the foregoing embodiment, in this embodiment, as shown in fig. 2A, the substrate 10 includes a first organic film layer 12A and a second organic film layer 12b that are sequentially stacked, when the organic film layer 12 is a PI layer, the substrate 10 in the array substrate provided in this embodiment is a double-layer PI layer, the conductive light shielding layer 14 is disposed on the first organic film layer 12A, the conductive light shielding layer 14 is provided with the pressure sensing electrode 142 that is insulated from the conductive light shielding layer 14, and the second organic film layer 12b is disposed on the conductive light shielding layer 14 and the pressure sensing electrode 142, so that compared with the prior art, the second organic film layer 12b and the pressure sensing electrode 142 are added between the conductive light shielding layer 14 and the circuits in the array substrate, so that the distance between the conductive light shielding layer 14 and the array substrate is increased, thereby the problem of capacitive coupling between the conductive light shielding layer 14 and the circuits on the array substrate is not likely to occur, and thus parasitic capacitance between the conductive light shielding layer 14 and the circuit device is reduced or avoided, thereby reducing the driving load of the pixel circuit.
In this embodiment, in order to further increase the distance between the conductive shading layer 14 and the circuit in the array substrate, specifically, the thickness of the second organic film layer 12b is greater than the thickness of the first organic film layer 12a, so that the distance between the conductive shading layer 14 and the circuit in the array substrate is greater, and thus the capacitive coupling between the conductive shading layer 14 and the circuit in the array substrate is less likely to occur, and the driving load of the pixel electrode can be further reduced.
In this embodiment, an inorganic insulating layer or an organic insulating layer may be provided on the conductive light shielding layer 14, or an inorganic insulating layer or an organic insulating layer may be provided on a surface of the pressure-sensitive electrode 142 facing the conductive light shielding layer 14.
In addition to the above embodiment, in the present embodiment, since the conductive light shielding layer 14 is an inorganic film layer, when the conductive light shielding layer 14 is located between at least two organic film layers 12, the adhesion between the conductive light shielding layer 14 and the organic film layers 12 is often weak due to different properties, and the conductive light shielding layer 14 and the organic film layers 12 are easy to crack, therefore, in the present embodiment, a first inorganic film layer 13a is further disposed between at least two organic film layers 12, and the conductive light shielding layer 14 is disposed on the first inorganic film layer 13a, so that the adhesion between the conductive light shielding layer 14 and the first inorganic film layer 13a is larger due to the same properties, and the conductive light shielding layer 14 and the first inorganic film layer 13a are not easy to crack, in the present embodiment, as shown in fig. 2C, the first inorganic film layer 13a is disposed on the first organic film layer 12a, the conductive light shielding layer 14 is disposed on the conductive light shielding layer 14, and the second organic film layer 12b is disposed on the conductive light shielding layer 14 and the pressure sensing electrode 142.
In this embodiment, as shown in fig. 2C, the substrate 10 further includes: the buffer layer 15, the buffer layer 15 is disposed on the second organic film layer 12b, and the TFT layer is particularly disposed on the buffer layer 15, so that the second organic film layer 12b, the pressure sensitive electrode 142 and the buffer layer 15 are spaced between the conductive light shielding layer 14 and the circuit on the array substrate, so that the distance between the conductive light shielding layer 14 and the circuit on the array substrate is larger, and the parasitic capacitance between the conductive light shielding layer 14 and the circuit device is further reduced or avoided.
In this embodiment, as shown in fig. 2C, the substrate 10 further includes: the second inorganic film layer 13b, the second inorganic film layer 13b is arranged between the buffer layer 15 and the second organic film layer 12b, and four film layers including the second organic film layer 12b, the second inorganic film layer 13b, the pressure sensitive electrode 142 and the buffer layer 15 are arranged between the conductive shading layer 14 and the circuit on the array substrate at intervals, so that the distance between the conductive shading layer 14 and the circuit on the array substrate is larger, and the parasitic capacitance between the conductive shading layer 14 and the circuit device is further reduced or avoided.
In this embodiment, in order to protect the first organic film layer 12a and support the substrate 10, as shown in fig. 2C, the substrate 10 further includes: and a supporting film 11, wherein the supporting film 11 is disposed on a surface of the first organic film layer 12a opposite to the conductive light shielding layer 14, and the supporting film 11 can protect the first organic film layer 12a and prevent the first organic film layer 12a from being scratched, and in this embodiment, the supporting film 11 is specifically attached to the back surface of the first organic film layer 12a after the display panel is peeled off from the glass substrate.
In this embodiment, it should be noted that, except for the conductive light shielding layer 14 and the pressure sensitive electrode 142, the first organic film layer 12a, the second organic film layer 12b, the first inorganic film layer 13a, the second inorganic film layer 13b and the buffer layer 15 are all transparent film layers.
On the basis of the above embodiment, in the present embodiment, the pressure-sensitive electrode 142 has an opening region corresponding to the fingerprint identification region 143 on the display panel, as shown in fig. 2B, in the present embodiment, the position of the fingerprint identification region 143 on the display panel for placing a finger corresponding to the pressure-sensitive electrode 142 is an opening region, a light-transmitting hole 1422 is formed in the opening region, and the imaging hole 141 is formed in the position of the conductive light-shielding layer 14 corresponding to the light-transmitting hole 1422.
On the basis of the above embodiments, in the present embodiment, as shown in fig. 2B, each of the pressure sensing electrodes 142 has a pressure sensing electrode lead 1421, the pressure sensing electrode lead 1421 is used to electrically connect the pressure sensing electrode 142 to the circuit board, and the pressure sensing electrode lead 1421 corresponds to a non-light-transmitting region in the display panel, so as to avoid the influence of the pressure sensing electrode lead 1421 on the display region of the display panel, wherein, in the present embodiment, the pressure sensing electrode lead 1421 is caused along the interval between the pressure sensing electrodes 142 or the edge of the pressure sensing electrode, and the pressure sensing electrode lead 1421 is used to conduct the pressure sensing electrode 142 to the circuit board.
EXAMPLE III
Fig. 3 is a schematic cross-sectional structure diagram of a display panel and a fingerprint identification module in a display device according to a third embodiment of the present invention.
The third embodiment of the invention provides a display device, which can be an OLED display device, a television comprising the OLED display device, a digital camera, a mobile phone, a tablet computer, an intelligent watch, an electronic book, a navigator and other products or components with display functions.
In this embodiment, the display device includes the fingerprint identification module 60 and the display panel described in any of the above embodiments, in this embodiment, the structure, function, and implementation of the display panel can refer to the specific description in the above embodiments, which is not repeated herein, wherein the fingerprint identification module 60 is located below the display panel and corresponds to the imaging hole 141 in the display panel, so that the light reflected by the finger is transmitted to the fingerprint identification module 60 through the imaging hole 141, specifically, in this embodiment, as shown in fig. 1A, the fingerprint identification module 60 is located on a surface of the support film 11 deviating from the first organic film layer 12a in the display panel, so that the light reflected by the finger passes through the imaging hole 141 to enter the fingerprint identification module 60, the fingerprint identification module 60 forms a fingerprint image according to the received light, the formed fingerprint image is compared with a pre-stored fingerprint image, and fingerprint identification is completed according to the comparison result.
In this embodiment, the light projected onto the finger may be provided by a specially-arranged fingerprint light source, or the light may be provided by the light emitted by the light-emitting unit 50, and whether the fingerprint light source is additionally arranged is selected according to the requirement of fingerprint identification.
In this embodiment, the structure, function and implementation of the display panel may refer to the detailed description in the above embodiments, and are not repeated herein.
The display device that this embodiment provided, through including above-mentioned display panel, like this when fingerprint identification, be difficult for appearing the problem of capacitive coupling between the circuit on electrically conductive light shield layer 14 and the array substrate, reduce or avoid the parasitic capacitance between electrically conductive light shield layer 14 and the circuit device like this, thereby pixel circuit's drive load has been alleviateed, the great problem of pixel circuit drive load has been caused because electrically conductive light shield layer 14 easily appears capacitive coupling with the circuit in having solved current fingerprint identification device, the pressure sense function has been integrated in the fingerprint identification display module assembly simultaneously, make display device have pressure sense touch-control function.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A display panel for fingerprint identification, the display panel comprises an array substrate and a plurality of light-emitting units arranged on the array substrate, the array substrate comprises a substrate and a thin film transistor layer arranged on the substrate, and is characterized in that,
the substrate comprises at least two organic film layers which are arranged in a stacked mode, a conductive shading layer is arranged between the at least two organic film layers, a first inorganic film layer is further arranged between the at least two organic film layers, and the conductive shading layer is arranged on the first inorganic film layer; the conductive shading layer is divided into a plurality of pressure-sensitive electrodes which are mutually spaced, and imaging holes for light to penetrate are formed in the pressure-sensitive electrodes.
2. A display panel for fingerprint identification, the display panel comprises an array substrate and a plurality of light-emitting units arranged on the array substrate, the array substrate comprises a substrate and a thin film transistor layer arranged on the substrate, and is characterized in that,
the substrate comprises at least two organic film layers which are arranged in a stacked mode, a conductive shading layer is arranged between the at least two organic film layers, a first inorganic film layer is further arranged between the at least two organic film layers, and the conductive shading layer is arranged on the first inorganic film layer; the light source comprises a conductive shading layer, wherein a plurality of pressure-sensitive electrodes which are arranged at intervals and insulated from the conductive shading layer are arranged on the conductive shading layer, imaging holes are formed in the conductive shading layer, and light holes are formed in positions, corresponding to the imaging holes, on the pressure-sensitive electrodes.
3. The display panel for fingerprint recognition according to claim 1 or 2, wherein a spacing area between each of the pressure-sensitive electrodes corresponds to a non-light-transmitting area in the display panel; preferably, the first and second liquid crystal materials are,
the spacing region between the pressure-sensitive electrodes corresponds to one of the electrode traces of the storage capacitor in the display panel, and/or the spacing region between the pressure-sensitive electrodes corresponds to the scanning line in the display panel, and/or the spacing region between the pressure-sensitive electrodes corresponds to the data line in the display panel.
4. The display panel for fingerprint recognition according to claim 1 or 2, wherein the substrate comprises a first organic film layer and a second organic film layer which are sequentially stacked, the conductive light shielding layer is disposed on the first organic film layer, and the second organic film layer is disposed on the conductive light shielding layer.
5. The display panel for fingerprint recognition of claim 4, wherein the thickness of the second organic film layer is greater than the thickness of the first organic film layer.
6. The display panel for fingerprint recognition of claim 4, wherein the substrate further comprises:
the buffer layer is arranged on the second organic film layer, and the thin film transistor layer is arranged on the buffer layer;
a second inorganic film layer disposed between the buffer layer and the second organic film layer.
7. The display panel for fingerprint recognition of claim 4, wherein the substrate further comprises:
and the support film is arranged on one side of the first organic film layer, which is back to the conductive shading layer.
8. The display panel for fingerprint recognition according to claim 1 or 2, wherein each of the pressure-sensitive electrodes has a pressure-sensitive electrode lead for electrically connecting the pressure-sensitive electrode with a circuit board, and the pressure-sensitive electrode lead corresponds to a non-light-transmitting area in the display panel.
9. A display device, comprising a fingerprint recognition module and the display panel of any one of claims 1 to 8, wherein the fingerprint recognition module is located below the display panel and corresponds to an imaging hole in the display panel, so that light reflected by a finger is transmitted to the fingerprint recognition module through the imaging hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228601.0A CN109992155B (en) | 2019-03-25 | 2019-03-25 | Display panel and display device for fingerprint identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228601.0A CN109992155B (en) | 2019-03-25 | 2019-03-25 | Display panel and display device for fingerprint identification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109992155A CN109992155A (en) | 2019-07-09 |
| CN109992155B true CN109992155B (en) | 2022-10-14 |
Family
ID=67131424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910228601.0A Active CN109992155B (en) | 2019-03-25 | 2019-03-25 | Display panel and display device for fingerprint identification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109992155B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808271A (en) * | 2019-11-13 | 2020-02-18 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN113490942B (en) * | 2019-12-20 | 2025-03-14 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method thereof, display panel and display device |
| CN111814712B (en) * | 2020-07-15 | 2024-07-16 | 京东方科技集团股份有限公司 | Texture recognition device and display device |
| CN111965904B (en) * | 2020-09-03 | 2022-10-28 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN112215152B (en) * | 2020-10-13 | 2023-10-03 | 业泓科技(成都)有限公司 | Display device with fingerprint identification module |
| CN114565950B (en) | 2021-07-23 | 2025-01-24 | 友达光电股份有限公司 | Optical sensing device |
| CN113888993A (en) * | 2021-11-10 | 2022-01-04 | 合肥维信诺科技有限公司 | Foldable display module and terminal equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340929A (en) * | 2017-08-18 | 2017-11-10 | 武汉天马微电子有限公司 | Pressure touch display panel and pressure touch display device |
| CN107994034A (en) * | 2017-12-13 | 2018-05-04 | 京东方科技集团股份有限公司 | Display panel, boring method and display device with fingerprint identification function |
| CN108122942A (en) * | 2016-11-28 | 2018-06-05 | 乐金显示有限公司 | It is integrated with the el display device of fingerprint sensor |
| CN108647586A (en) * | 2018-04-19 | 2018-10-12 | 业成科技（成都）有限公司 | Display device |
| CN109032420A (en) * | 2018-08-31 | 2018-12-18 | 京东方科技集团股份有限公司 | The operating method of display device and display device |
| CN109144319A (en) * | 2018-08-22 | 2019-01-04 | 京东方科技集团股份有限公司 | The driving method of sensing arrangement, display equipment and sensing arrangement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102336683B1 (en) * | 2017-07-05 | 2021-12-08 | 삼성디스플레이 주식회사 | Display apparatus and manufacturing the same |
-
2019
- 2019-03-25 CN CN201910228601.0A patent/CN109992155B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122942A (en) * | 2016-11-28 | 2018-06-05 | 乐金显示有限公司 | It is integrated with the el display device of fingerprint sensor |
| CN107340929A (en) * | 2017-08-18 | 2017-11-10 | 武汉天马微电子有限公司 | Pressure touch display panel and pressure touch display device |
| CN107994034A (en) * | 2017-12-13 | 2018-05-04 | 京东方科技集团股份有限公司 | Display panel, boring method and display device with fingerprint identification function |
| CN108647586A (en) * | 2018-04-19 | 2018-10-12 | 业成科技（成都）有限公司 | Display device |
| CN109144319A (en) * | 2018-08-22 | 2019-01-04 | 京东方科技集团股份有限公司 | The driving method of sensing arrangement, display equipment and sensing arrangement |
| CN109032420A (en) * | 2018-08-31 | 2018-12-18 | 京东方科技集团股份有限公司 | The operating method of display device and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109992155A (en) | 2019-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109992155B (en) | Display panel and display device for fingerprint identification | |
| CN107425041B (en) | touch display panel, device and manufacturing method | |
| US10338724B2 (en) | Array substrate and method for fabricating the same, and display device and method for driving the same | |
| US10067613B2 (en) | Touch display device | |
| JP2024150606A (en) | Display substrate and display device | |
| US9310948B2 (en) | Array substrate, touch screen panel and display device | |
| US10088941B2 (en) | Touch control substrate and display device | |
| CN112038379B (en) | Pixel array substrate | |
| CN105045435B (en) | A kind of In-cell touch panel and display device | |
| CN104571715A (en) | Array substrate, production method and driving method thereof and display unit | |
| CN109002229B (en) | Touch panel, display module and touch display device | |
| CN104991683A (en) | OLED (organic light emitting dioxide) touch display panel and control method therefor and display device | |
| CN112993001B (en) | Display panel and display device | |
| CN111405084A (en) | Display panels and smart terminals | |
| US20170025480A1 (en) | In-cell touch panel | |
| CN110491905A (en) | The manufacturing method of display panel, display device and display panel | |
| CN115224100A (en) | Display component, its manufacturing method, and crack detection method | |
| US20220066588A1 (en) | Touch display panel and electronic device | |
| US11334740B2 (en) | Circuit, structure, and device for fingerprint recognition, display panel, and display device | |
| US20250362776A1 (en) | Display panel and display device including the same | |
| US20200201507A1 (en) | Touch panel and touch display device | |
| CN215578576U (en) | Display panel and display device | |
| US11231795B2 (en) | Touch control array substrate having a plurality of auxiliary conductive lines, and display apparatus thereof | |
| CN114864597A (en) | Array substrates and display panels | |
| CN101673157B (en) | Touch panel and touch display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20251221 Address after: 215334 No. 135 Zhangji Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Guoxian Innovation Technology Co.,Ltd. Country or region after: China Address before: 065500 Guan County, Hebei Province emerging industries demonstration zone Patentee before: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd. Country or region before: China |