GB2201280A - Liquid crystal devices - Google Patents
Liquid crystal devices Download PDFInfo
- Publication number
- GB2201280A GB2201280A GB08803411A GB8803411A GB2201280A GB 2201280 A GB2201280 A GB 2201280A GB 08803411 A GB08803411 A GB 08803411A GB 8803411 A GB8803411 A GB 8803411A GB 2201280 A GB2201280 A GB 2201280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid crystal
- crystal display
- panel
- display device
- display panel
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 63
- 238000003780 insertion Methods 0.000 claims abstract description 12
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 238000005286 illumination Methods 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 31
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000005401 electroluminescence Methods 0.000 description 5
- 210000002858 crystal cell Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F13/0454—Slidable panels or parts
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/46—Fixing elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
- G02F2201/503—Arrangements improving the resistance to shock
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
In a liquid crystal display device, support members 6a-6d attached to a display panel (not shown) include two parallel elongate guide grooves for facilitating insertion of an illumination panel 4 and a circuit panel 2 carrying circuitry 3a, 3b for driving the display panel is also supported on the support members. The compact structure thus formed enhances mechanical strength of the device and hence improved reliability of operation. The circuit panel may be secured to the support members by adhesion or with adhesive pins. Output terminals of the circuitry 3a, 3b are respectively connected to segment, common electrodes of the L C display panel. The circuit panel 2 may include in addition a picture memory and a C P U. <IMAGE>
Description
LIQUID CRYSTAL DISPLAY DEVICE Background of the Invention
The present invention relates to a liquid crystal display device (LCD) with a flat-type light source which illuminates the liquid crystal cells from behind.
Because liquid crystal is not a self-illuminating element, a back light such as electro-luminescence (EL) is required to allow display in darkness. Nevertheless, no conventional liquid crystal display has ever been provided with a member specifically designed to facilitate installation of a back light behind liquid crystal cells.
Summary of the Invention
The present invention is to provide a liquid crystal display device with members ideally suited for guiding and installing a back light on the back of the liquid crystal cells of an LCD. Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from the following detailed description.
To realize the above objects, according to one of the preferred embodiments of the present invention, this unique LCD device is provided with electrode substrates, circuit substrates and a flat-type back light, wherein the device uses guide members for allowing installation of the back light behind the electrode substrate.
Specifically, the guide members are grooves which have tapered ends with wide apertures and a narrow end portion. A wide groove is provided at the juncture of the guide members; stopper members for connecting the flat-type back light to the electrode substrate; and the fixing members for securing to the circuit substrate.
Another preferred embodiment of the present invention includes an LSI-driven LCD panel connected to the
printed wiring board and which is capable of displaying Fc;pictures through back light illumination. The guide
members are installed behind the display panel to allow
-insertion and to hold the back light securely, while the
printed wiring board is mounted onto the part opposite
the liquid crystal panel of the guide member. This
embodiment also incorporates a film-carrier LSI. In
that case, it is preferrable that the output terminal of
the film-carrier LSI is bent inward to be connected to
the front surface of the liquid crystal display panel.
Brief Description of the Drawings The present invention will be better understood from the
detailed description given hereinbelow and the
accompanying drawings which are given by way of
illustration only, and thus are not limitative of the
present invention in which:
Fig. 1 is a schematic diagram showing the entire config
uration of the liquid crystal display device reflecting
the primary preferred embodiment of the present
invention;
Figs 2 and 3 are sectional views of the liquid crystal -display device shown in Fig. 1;
Fig. 4 is an enlarged view of the guide member described
above;
Fig.S is the shape of the groove formed in the guide member shown in Fig. 4;
Fig. 6 is an enlarged view of another guide member built
in the liquid crystal display device shown in Fig. 1;
Figs. 7 and 8 are fragmentary structural views of the guide member other than those shown above;
Fig. 9 is an exploded perspective view of the liquid
crystal display device provided with back lights reflecting the second preferred embodiment of the present invention;
Fig. 10 is a sectional view of the back-light-provided
liquid crystal display device shown in Fig. 9 of line 11-Il; and
Fig. 11 is a sectional View of the back-light-provided
liquid crystal display device shown in Fig. 9 of line III-III.
Detailed Description of the Preferred Embodiments Fig. 1 is a schematic diagram showing the entire config
Fig. 1 is a schematic diagram showing the entire config- uration of the liquid crystal display device incorporating the primary preferred embodiment of the invention. In Fig. 1, the reference number 1 indicates an electrode substrate, an electrode panel on which an electrode pattern is formed. (not shown) . Current conduction through the electrode pattern of electrode substrate 1 is controlled by a circuit substrate 2, segment electrode-driving LSIs 3a, and a common electrode-driving LSI 3b. A flat-type back light 4 (such as an organic EL panel) is inserted between the electrode substrate 1 and the circuit substrate 2, which face each other.The back light 4 has a luminous element 4a in the center, while an illuminating connector 5 is located at place on the edge. As mentioned above, the flat-type back light 4 is inserted into the back of the electrode substrate 1. Four guide to members (guide rails) 6a, 6b, 6c, and 6d are placed to smoothly guide the flat-type back light 4 onto the back surface of the electrode substrate 1 until it is secured to it. As described below, the guide apparatus consists of four separate parts: 6a, Gb, 6c, and 6d. Fig. 1 shows how those parts are connected to each other.
Fig. 2 is a traverse sectional view of the liquid crystal display device incorporating the flat-type back light of line A-A' of Fig. 1 while Fig. 3 is a longitudinal sectional view of line B-B' of Fig. 1. In
Fig. 2, the reference numbers la and lb indicate a transparent or translucent polarization sheet respectively. Film-carr'ier type LSIs 3a and 3b are installed as shown in fig. 2, and are then connected electrically to the lead-electrode terminal of the electrode substrate 1 by means of heat-sealed member coated with metallic particles.
The configuration of the guide members 6a, 6b, 6c, and 6d, is described below. Note that guide members 6a and 6c are placed in symmetry to each other as are guide members 6b and 6d. Fig.' 4 is an enlarged view of the guide member 6a (6cry. In Fig. 4, the left edge is for the inlet for the back light 4 onto the rear of the liquid crystal display device, whereas the right edge is for the connection of the other guide member 6b (6d).
-The reference number 7 indicates an adhesive pin, a fixIng member used to secure guide member 6a (6c) to the circuit substrate 2. This pin 7 fits into a hole (not shown) provided in the circuit substrate 2. A Groove 8 is formed along the long side of the guide member ba (6c) so that a side of the flat-type back light 4 passes through groove 8 and is held securely. Groove 8 has a tapered end 8a with a wide aperture to allow insertion of the flat-type back light, and a narrow internal section to securely hold the back light. Fig. 5 shows the configuration of groove 8, which indicates that the inner portion is narrowed so that the back light 4 can be securely held. The guide member 6a (6c) is provided with a stopper pin 9 to hold the electrode substrate.
Referring now to Fig. 6, the configuration of the guide member 6b (6d) is described below. In Fig. 6, the left end allows the connection to the guide member 6a (6c), whereas the right end 'is the extreme end for the insertion of the flat-type back light 4. The reference number 7' indicates an adhesion pin (fixing member) which secures the guide member 6b (6d) to the circuit substrate 2, by fitting into a hole (not shown) provided in -the circuit substrate 2. A groove 8' is provided on the. long side of the guide member 6b (6d), which is connected to groove 8 of the guide member 6a (6c)'. A side of the back light 4 passes through groove 8' and is securely held. As shown in Fig. 7, the joint portion 8'a of groove 8' is wider than the portion close to the extreme end 8'b, as shown in Fig. 8.Since the configuration of groove 8' is exactly identical to that was shown in Fig. 5, description is omitted. A stopper pin 9' holds guide member 6b (6d) to the electrode substrate.
As is clear from the foregoing description, a liquid crystal display device incorporating an electrode substrate, a circuit substrate, and the flat-type back light reflecting the primary preferred embodiment of the present invention provides the advantages described below.
(A) The new LCD device is. provided with a wider
aperture which allows easier insertion of the
flat-type back light than does conventional
methods. Even when using an extremely thin
flat-type back light assembly to the liquid crystal
display device can be easily carried out due to the - :'.presende of a large insertion aperture, thus
providing great advantages fats the assembly
operation.
(B) Since the guide member is provided with a stopper
member to be engaged with the ilectrode substrate,
the guide member and the liquid crystal cell rest
in close adhesion with each other, significantly
enhancing mechanical strength. This closeness of
contact provides a great convenience for assembly
and handling, thus resulting in improved
reliability.
(C) Since the guide apparatus consists of many separate
members, each engaged with the electrode substrate,
unreasonable pressure, including bending of guide
members applied by conventional means can be
avoided.
(D) The extreme end of groove is -in-':arrowed to securely
hold the flat-type back light in position
completely freed from the - dsSightest vibration
caused by shock, friction, wear or malfunction, an
improvement over conventional methods in
reliability.
(E) The guide members are provided with fixing members which solidly secure them to the circuit substrate.
This configuration allows convenient integration of
the circuit substrate, guide members1 and the
electrode substrate,' thus significantly enhancing
the resistance against vibration and shock as well
as preventing disconnection of electrical
connectors.
(F) Since a wide groove is provided at the juncture of
the guide members, improper installation that may
potentially occur at the juncture is eliminated
effectively thus, ensuring smoother insertion of
the flat-type back light without obstruction.
The configuration of the second preferred
embodiment is described below. As is clear from
Figs. 9, 10, and 11, the thin LCD device reflecting
the second preferred embodiment is comprised of a
liquid crystal display panel 31, a wafer-thin
back-light 33 securely held by a pair of guide
rails 32/32 on the-back surface-(corresponds to the
upper surfaces of the accompanying drawings) of a
liquid crystal display panel 31, and a solid-state printed wiring board 34 which is mounted on a pair -of the guide rails 32/32. The liquid crystal display panel 31 is composed of an upper panel 35 and a lower panel 36 which are made of translucent materials. The upper panel 35 is narrower and longer than the lower panel 36. The Guide rails 32/32 are installed above the lower panel 36 and along the side of the upper panel 35.Both rails 32/32 are secured to the lower panel 36 with pegs 37 and 38 located on both edges of the long side of the lower panel 36. Guide rails 32/32 clamp and steady the upper panel 35. Liquid crystal is inserted between the upper panel 35 and the lower panel 36 (not shown). A transparent common electrode is attached to the upper panel 35; a transparent segment electrode is attached to the lower panel 36. The back light 33 is provided with a frame 39, a luminous element 10 composed of organic electro-luminescence (EL), and a connector 11 connected to a signal wire (not shown) for illuminating the back light. The frames, located on either side of the frame unit 10 can be inserted into or drawn out of concaves 12/12.
The solid-state printed wiring board 34 is secured to the upper surface of guide rails 32/32 by means of adhesion or with adhesive pins as required. The edges of the solid-state printed wiring board 34 are provided with notches 13 at specific intervals, each notch 13 containing a film carrier-type LSI 14, which provides power to the segment electrode.
The LSI 14 is provided with a wafer-thin- input terminal 15 and an output terminal 16. The input terminal 15 is connected to the designated printed pattern (not specifically shown) on the upper surface of the solid-state printed wiring board 34, whereas the output terminal 16, extending in the outside direction, is connected to the terminal of the segment electrode on the upper surface of the lower panel 6 by means of a heat-sealed material containing metallic particles. Thus, the plurality of notches 13 in the positions designated for the installation of respective segment electrode-driving LSIs 14 'can accommodate an extremely thin LCD and ensure^ better contact
between the input terminal 15 and the solid-state
printed wiring board 34.The front edge of the
solid-state printed wiring board 34 is provided with two notches 17, each concaining a film-carrier
type common electrode-driving LSI 18. The input
terminal 20 cf the common electrode-driving LSI 18
is connected to the designated printed pattern on
the upper surface of the solid-state printed wiring
board 34. An output terminal 21 is bent to the
inside of the liquid crystal display panel 1, which
is connected to the terminal portion the common
electrode formed on the'back (upper) surface of the
upper panel 35. Alternatively, although the
non-display area of the upper panel 35 may expand
slightly, as shown by the 2-point broken line of
Fig. 11, the output terminal 21 may be bent outward
to enable connection to the upper surface of the
upper panel 35. A variety of elements such as
picture memory, controller or a central processing
unit (CPU), may also be mounted sn^"the solid-state
printed wiring board 34 in =edition to the
film-carrier type LSIs 14 and 18 (now shown).
Signal wires used to drive both the segment and
common electrodes can be drawn out to the rear
-portion of the printed wiring board 34, in the
identical direction of the back-light driving
signal wire (which is connected te connector 11
mentioned above). Since these signal wires can all
be drawn out in the same direction, signal wire
distribution can be easily accomplished when
mounting the liquid crystal displ-ay device to a
variety of equipment. Note that either a
transparent or a translucent back-side polarization
sheet 22 can be installed between the upper panel
35 and the back light 33, while a front-side
polarization sheet 23 (not shown in Fig. 11) is
installed on the front-surface of the lower panel
36.
According to the second' preferred embodiment of the present invention, the following advantages can be achieved.
(1) The provision of guide members ensures smoother
insertion and replacement of the back light. Since the back light is securely supported by the guide ~ members, camber and friction caused by vibration
are minimized. Furthermore while facilitating
smoother insertion and replacement of the back
light as mentioned above, the guide members
conveniently allow mounting of the liquid crystal
display panel, back light,- and the solid-state
printed wiring board in extremely thin layers,
enabling manufacturers to produce thinner liquid
crystal display devices.
(2) The display-drivig, film-carrier type LSIs are
themselves mounted on the solid-state printed
wiring board, with only their output terminals
connected to the liquid crystal display panel. As
a result, the LCD herein described offers a
spacious display area.
In addition to these benefits, when connecting the
output terminal of the film-carrier LSI to the back
surface of the liquid crystal display panel, the
output terminal, which usually extends in the
outside direction, requirs a connection portion on
the LCD display panel. Thus, increases the
non-display area of the LCD panel. The display
area of the LCD panel can be effectively increased,
however, by bending the output terminal of the
'film-carrier LSI to a position inside the display
panel before it is - connected to the front surface
of this panel. As a result, it is possible for the
system to significantly improve the amount of
effective display area.
(3) Since the printed wiring board mainly accommodates
wiring for the input terminal of the film-carrier
LSI, a simple printed pattern is sufficient for the
manufacturer to produce printed wiring boards at
inexpensive cost. Because the printed wiring board
itself functions as the cover of the back light, it
prevents dust from gathering on the back light.
While only certain embodiments of the present
invention have been described, it will be apparent
to those skilled inv the art that various changes
and modifications may be made therein without
departing from the spirit and scope of the present
invention as claimed.
Claims (13)
1. A liquid crystal display device having members to support an illumination means at a position behind the liquid crystal display and guide the illumination means during its insertion into the said position.
2. A liquid crystal display device provided with back light to illuminate the liquid crystal display panel, which is driven by LSIs mounted on the printing wiring board, with said back light for displaying pictures on the liquid crystal display panel, in which guide members that allow insertion and support said back light are provided on the back of said liquid crystal display panel, while installing and supporting said printed wiring board on the part of guide member being opposite from the liquid crystal display panel, while said LSIs mounted on the printed wiring board are substantially the film-carrier type LSIs.
3. A liquid crystal display device provided with back light defined in claim 2 wherein the output terminal of said film-carrier LSI is bent inward and connected to the front surface of the liquid crystal display panel.
4. A liquid crystal display device comprising:
electrode means;
liquid crystal display cell means;
circuit means;
electroluminescent display flat back light means for emitting light toward said liquid crystal display cell means from behind said liquid crystal display cell means; and
guide means for guiding said electroluminescent flat back light means onto the back surface of said electrode means.
5. A liquid crystal display device (LCD) containing an electrode substrate, a circuit substrate, and a flat-type back light, which incorporates a guide apparatus consisting of several guide members for guiding said flat-type back light onto the back surface of said electrode substrate, wherein said guide apparatus is comprised of:
grooves with tapered ends with wide apertures to accommodate said back light and having a narrowed shape at its extreme end but wide at the juncture for connecting said guide members;
stopper members to facilitate connection to said electrode substrate; and
a fixing member to secure said guide members to said circuit substrate.
6. A liquid crystal display device substantially as herein described with reference to the drawings.
Amendments to the claims
have been filed as follows
CLAIMS: 1. A liquid crystal display device including a liquid crystal display panel; support members attached to said display panel for supporting an illumination panel in a position for back-lighting the display panel, said support members defining two parallel elongate guide grooves for guiding opposite edges of the illumination panel during its sliding insertion to said position; and a circuit panel carrying circuitry for driving the display panel, said circuit panel being supported on said support members.
2. A liquid crystal display device according to claim 1, wherein said circuit panel is supported further including a circuit on such a position relative to the display panel that the illumination panel slides into a space between said display panel and said circuit panel.
3. A liquid crystal display device according to claim 2 wherein said support members are formed with fixing members which secure said support members to opposed side edges of said circuit panel.
4. A liquid crystal display device according to claim 2 or claim 3 wherein electrical connecting means connects said circuitry carried on said circuit panel to the display panel, said electrical connecting means being disposed along outer edges of said support members.
5. A liquid crystal display device according to any of claims 2 to 4 wherein the circuit panel carries a plurality of film-carrier type LSI's which are connected to drive the display panel.
6. A liquid crystal display device according to claim 10 wherein output terminals of - at least one said LSI extend across an edge of the display panel and are bent inwardly and connected to the front face of the display panel.
'
7. A liquid crystal display device according to any preceding claim, further including a circuit panel fixed relative to the display panel such that the illumination panel slides into a space between said display panel and said circuit panel.
8. A liquid crystal display device according to claim 7 wherein said support members are formed with fixing members which secure said support members to opposed side edges of said circuit panel.
9. A liquid crystal display device according to claim 7 or claim 8 wherein electrical connecting means connects drive circuitry mounted on said circuit panel to the display panel, said electrical connecting means being disposed along outer edges of said support members.
10. A liquid crystal display device according to any of claims 7 to 9 wherein the circuit panel carries a plurality of film-carrier type LSl's which are connected to drive the display panel.
11. A liquid crystal display device according to claim 10 wherein output terminals of at least one said LS1 extend across an edge of the display panel and are bent inwardly and connected to the front face of the display panel.
12. A liquid crystal display device substantially as hereinbefore described with reference to figures 1 to 8 of the ac-companying drawings.
13. A liquid crystal display device substantially as hereinbefore described with reference to figures 9 to 11 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8803411A GB2201280B (en) | 1985-01-22 | 1986-01-22 | Liquid crystal display device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP783785U JPH0531624Y2 (en) | 1985-01-22 | 1985-01-22 | |
| JP5649385U JPS61173979U (en) | 1985-04-15 | 1985-04-15 | |
| GB8601511A GB2171834B (en) | 1985-01-22 | 1986-01-22 | Liquid crystal display device |
| GB8803411A GB2201280B (en) | 1985-01-22 | 1986-01-22 | Liquid crystal display device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8803411D0 GB8803411D0 (en) | 1988-03-16 |
| GB2201280A true GB2201280A (en) | 1988-08-24 |
| GB2201280B GB2201280B (en) | 1989-12-20 |
Family
ID=27262900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8803411A Expired GB2201280B (en) | 1985-01-22 | 1986-01-22 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2201280B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0985949A3 (en) * | 1998-09-10 | 2001-01-10 | Sony Corporation | Display apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2017373A (en) * | 1978-02-27 | 1979-10-03 | Siemens Ag | Display device |
| EP0089406A2 (en) * | 1982-03-19 | 1983-09-28 | Mettler-Toledo AG | Measuring instrument display, particularly for a balance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809078A (en) * | 1983-10-05 | 1989-02-28 | Casio Computer Co., Ltd. | Liquid crystal television receiver |
-
1986
- 1986-01-22 GB GB8803411A patent/GB2201280B/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2017373A (en) * | 1978-02-27 | 1979-10-03 | Siemens Ag | Display device |
| EP0089406A2 (en) * | 1982-03-19 | 1983-09-28 | Mettler-Toledo AG | Measuring instrument display, particularly for a balance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0985949A3 (en) * | 1998-09-10 | 2001-01-10 | Sony Corporation | Display apparatus |
| US6445373B1 (en) | 1998-09-10 | 2002-09-03 | Sony Corporation | Display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8803411D0 (en) | 1988-03-16 |
| GB2201280B (en) | 1989-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 20060121 |