JP4894182B2 - Flat panel display module - Google Patents

Description

  The present invention relates to a flat panel display (hereinafter referred to as FPD) module such as a liquid crystal display module.

Conventionally, as shown in Patent Document 1, a normal liquid crystal display module has a liquid crystal display panel held by a frame at a predetermined position in a case. In recent years, such a liquid crystal display module has been widely used as a display for mobile devices such as mobile phones.
JP 2001-83901 A

  Although miniaturization and thickness reduction are extremely demanded for displays of mobile devices, conventional liquid crystal display modules have not been able to sufficiently achieve reduction in size and thickness in response to such demands.

  An object of the present invention is to provide an FPD module that is sufficiently small and thin.

The FPD module of the present invention is an FPD module that includes an FPD including at least one substrate and a holder that holds the FPD in a predetermined position, and a display area and a surrounding frame area are partitioned. First slope portions that are inclined toward the viewing side of the display are formed at a plurality of positions on the end surface of the substrate located on the viewing side of the display, and the frame portion located in the frame region of the holder includes a first slope portion. The engaging hooks having two inclined portions are formed so that the inclined portions can be engaged with each other so as to correspond to the first inclined portions of the substrate, respectively, and the side facing the frame portion on which the engaging hooks are formed A locking hook for locking the end of the substrate is formed at at least one position of the frame portion, and a tip end surface formed on the viewing side of the engagement hook is flush with the end surface of the substrate. Formed on a flat line And it is characterized in Rukoto.

  According to the above-described FPD module of the present invention, the slope engaging hook and the locking hook for preventing the FPD from being detached are integrally formed on the holder, and the slope is formed on the end surface of the substrate of the FPD. Since the slope engaging portion of the slope engaging hook is engaged, a shield case for preventing the FPD from being detached can be omitted, and the hook hook can be removed from the FPD surface of the hook head by making the engaging hook inclined. As a result, the FPD module can be significantly reduced in size and thickness.

  In the FPD module of the present invention, it is preferable that the holding tool including the engaging hook and the locking hook is integrally formed using an elastic resin material, whereby the engaging hook and the locking hook itself are elastically deformed. The FPD can be easily attached to and detached from the holder.

  Further, the present invention is preferably a liquid crystal display panel in which an FPD has a liquid crystal sandwiched between a pair of substrates, thereby obtaining a liquid crystal display module in which further reduction in size and thickness is promoted.

  FIG. 1 is a plan view showing a liquid crystal display module as an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II.

  As shown in FIG. 2, the liquid crystal display module of this embodiment includes a storage case 1 in which a liquid crystal display panel 3 held by a holder 2 and a backlight unit 4 are arranged in two stages with a predetermined gap. It is accommodated so as to overlap. The storage case 1 of the present embodiment is formed by sheet metal processing, and a light storage chamber for storing the backlight unit 4 having a smaller area on the bottom side of the panel storage chamber 11 for storing the liquid crystal display panel 3. A two-stage room structure with 12 is formed.

  The liquid crystal display panel 3 has a pair of rectangular glass substrates 31 and 32 on which electrodes (not shown) are formed, and a predetermined gap is maintained by a frame-shaped sealing material (not shown) with the respective electrode formation surfaces facing each other. The liquid crystal (not shown) is sealed between the glass substrates 31 and 32 surrounded by a frame-shaped sealing material. Front and rear polarizing plates 33 and 34 are respectively attached to the outer surfaces of the glass substrates 31 and 32 opposite to the liquid crystal sealing side.

  As shown in FIG. 1, the size of the pair of glass substrates in the liquid crystal display panel 3 of this example is larger in the rear glass substrate 32 than in the front glass substrate 31 on the display observation side. Glass substrates 31 and 32 having different sizes are joined such that one edge of the rear glass substrate 32 protrudes from a corresponding edge of the front glass substrate 31. On the projecting edge 321 of the rear glass substrate 32, wirings led out from the respective electrodes and connection terminals (not shown) at the respective ends thereof are arranged to form a driving circuit unit. A driver LSI 35 as a drive circuit element is mounted on COG (Chip On Glass). A flexible printed circuit (FPC) 36 is conductively joined to the input terminal area of the drive circuit section.

  The liquid crystal display panel 3 of the present embodiment is an active matrix liquid crystal display panel, and a plurality of pixel electrodes (not shown) are provided on the inner surface of the rear glass substrate 32 of the pair of glass substrates 31 and 32, for example. ) Is arranged in a matrix, and a color filter (not shown) composed of red, green, and blue color elements and a single film-like counter electrode (not shown) are laminated on the inner surface of the front glass substrate 31 facing the matrix. Has been.

  Here, slope portions 314 are formed on end surfaces 311, 312, and 313 of three sides other than the end surface corresponding to the protruding edge 321 of the front glass substrate 31, respectively. Each slope portion 314 is formed to a size that chamfers each end surface 311, 312, 313 over about 3/4, two on the long side end surface 311, one on each short end surface 312, 313, respectively. It is arranged.

  The holder 2 is generally formed by removing a top plate of a box whose outer shape is a rectangular parallelepiped, and an irradiation window 211 through which irradiation light from the backlight unit 4 passes is formed on the bottom plate 21.

  On the side plates 22, 23, and 24 erected on three sides other than the side corresponding to the protruding edge 321 of the holder 2, the engagement hook part 25 is made to correspond to the slope part 314 of the liquid crystal display panel 3. Is formed. Each of the four engagement hook portions 25 includes a slope 251 that can be closely engaged with each corresponding slope portion 314. The head end surface 252 of each engagement hook portion 25 is formed on a flat surface that is flush with the front surface of the front glass substrate 31.

  The side plate 26 erected on the side corresponding to the protruding edge 321 is formed with locking hooks 27 at two locations. These locking hooks 27 engage and clamp the end portions of the protruding edge 321 of the rear glass substrate 32 with the bottom plate 21.

  As described above, the holder 2 in which the four engaging hook portions 25 and the two locking hooks 27 are arranged around the bottom plate 21 uses polycarbonate which is a resin material rich in elasticity in this embodiment. Are integrally formed by injection molding. In this case, the holder 2 is formed so that the outer shape of the bottom surface 21 is substantially the same as the planar shape of the panel storage chamber 11 of the storage case 1, whereby the holder 2 holding the liquid crystal display panel 3 is stored in the storage case. In this state, the liquid crystal display panel 3 is accurately held at a predetermined position. Note that the slit 212 and the hole 213 formed in the bottom plate 21 are die-cutting spaces when the engaging hook portion 25 and the locking hook 27 are integrally formed as the holder 2, respectively.

  When the liquid crystal display panel 3 is attached to or detached from the holder 2, the engaging hook portion 25 and the locking hook 27 are forcibly elastically deformed, and the engaging hook portion 25 and the locking hook 27 are elastic such as polycarbonate. Therefore, the operator can easily elastically deform the necessary amount without damaging it, and as a result, the attaching / detaching operation can be carried out quickly.

  A backlight unit 4 is accommodated in the light storage chamber 12 of the storage case 1. The backlight unit 4 is a side light type surface emitting illumination device, and includes a light guide plate 41 whose outer shape is a rectangle that roughly corresponds to the liquid crystal display panel 3 to be irradiated. The light guide plate 41 is a transparent plate that emits light incident from the end surface in a planar shape from the one end surface with the end surface as a light incident surface and one of the main surfaces as a light output surface. The light guide plate 41 of the present embodiment is formed by molding using a transparent resin material such as acrylic resin, and one end face 411 in the longitudinal direction is used as a light incident surface, and the light incident surface 411 emits light as a light source. The rear surface 413 opposite to the front surface 412 which is disposed so as to face the diode 42 is a fine unevenness to reflect the propagating light in the light guide plate 41 toward the light output surface (front surface) 41c. Formed on the surface.

  In the mobile phone in which the liquid crystal display module configured as described above is incorporated as a display, the liquid crystal display module is provided at the front end surface of the side plate 13 of the storage case 1 at the edge of the display window 51 provided in the phone outer case 5. It is installed in the state which made contact. As a result, as compared with the conventional liquid crystal display module that uses a shield case to prevent the liquid crystal display panel from being detached, the thickness of the product, that is, the cellular phone is reduced by the thickness of the shield case, and the shield case is omitted. As a result, the liquid crystal display module is miniaturized and contributes to the miniaturization of the mobile phone.

  FIG. 3 is a schematic cross-sectional view corresponding to FIG. 2 showing a liquid crystal display module as a comparative example with respect to the above embodiment using a shield case, and the same constituent elements as those of the liquid crystal display module of the above embodiment are the same. The code | symbol is attached | subjected.

  As is apparent from FIG. 3, the installation space occupied by the liquid crystal display module in the outer case 6 of the mobile phone is the liquid crystal display module of this embodiment shown in FIG. 2 by the thickness t of the shield case 7 in the comparative example. The mobile phone becomes thicker by the thickness of the shield case 7.

  As described above, the liquid crystal display module of the present embodiment is integrated with the holder 2 by the resin-molding of the slope engaging type engaging hook portion 25 and the locking hook 27 for preventing the liquid crystal display panel 3 from being detached. Since the inclined surface portion 314 is formed on the end surface of the front glass substrate 31 of the liquid crystal display panel 3 and the inclined surface portion 251 of the inclined surface engaging hook portion 25 is closely engaged therewith, the liquid crystal display panel 3 As a result, the shield case for preventing the attachment / detachment of the liquid crystal display panel 3 can be formed on a plane aligned with the front surface of the front glass substrate 31 of the liquid crystal display panel 3. As a result, a liquid crystal display module that is extremely advantageous for the reduction in size and thickness of the applied product is promoted.

Next, a modification of the above embodiment will be described with reference to FIG.
In the holder 8 of this modification, the side plate 82 and the engaging hook portion 83 that are erected on the edge of the bottom plate 81 are separated by slits 84 and 84. Thereby, when the liquid crystal display panel 3 (see FIG. 2) is attached to and detached from the holder 8, the engagement hook portion 83 can be elastically deformed more easily, and the attachment and detachment work of the liquid crystal display panel 3 is further simplified. .

The present invention is not limited to the above embodiment.
For example, the present invention is not limited to the liquid crystal display module, but can be applied to various other FPD modules such as an organic EL display module.

It is a top view which shows the liquid crystal display module as one Embodiment of this invention. It is typical sectional drawing which cut | disconnects and shows the said liquid crystal display module by the II-II line | wire of FIG. It is typical sectional drawing corresponding to FIG. 2 which shows the liquid crystal display module as a comparative example of the said embodiment. It is a fragmentary perspective view which shows the modification of the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage case 2, 8 Holder 25 Engagement hook part 27 Engagement hook 3 Liquid crystal display panel 31, 32 Glass substrate 311 Slope part 4 Backlight unit 5, 6 Outer case 7 Shield case

Claims (4)

A flat panel display module comprising a flat panel display having at least one substrate and a holder for holding the flat panel display in a predetermined position, wherein a display area and a surrounding frame area are partitioned.
First inclined portions that are inclined toward the viewing side of the display are respectively formed at a plurality of locations on the end surface of the substrate located on the viewing side of the display,
Engagement hooks having second slope portions are formed on the frame portion located in the frame region of the holder so that the slope portions can be engaged with each other so as to correspond to the first slope portions of the substrate. In addition, a locking hook for locking the end of the substrate is formed in at least one position of the frame portion on the side facing the frame portion where the engagement hook is formed ,
Flat panel display module which is characterized that you have been formed in a plane distal end surface formed on the observation side of the display of the engagement hooks are arranged on the end face of the same height of the substrate. The at least one substrate is rectangular;
The flat panel display module according to claim 1, wherein the locking hook is formed on two frame portions adjacent to the frame portion on which the engagement hook is formed. The retainer flat panel display module according to claim 1 or 2, characterized in that it has been formed using a resin material having elasticity. The flat panel display module according to any one of claims 1 to 3, wherein the flat panel display is a liquid crystal display panel in which liquid crystal is sandwiched between a pair of substrates.

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