JP2003140115A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device which enables reducing positional deviation by correcting the positional deviation between an upper case and a back light. SOLUTION: The liquid crystal display device is provided with a liquid crystal display panel having a liquid crystal layer held between a pair of substrates, the upper case of a frame body which is arranged on the display face side of the liquid crystal display panel and has an aperture part for exposing a display area of the liquid crystal display panel and a side wall for covering the periphery of the liquid crystal display panel, and an illuminating means which is arranged on the face opposite to the display face of the liquid crystal display panel, and the side wall of the upper case has a plurality of bendable detaining pieces, and the illuminating means has a plurality of recessed parts each of which is provided for each of the detaining pieces and to which respective bent detaining pieces should be inserted, and the face of each recessed part, which crosses a line passing each bent detaining piece, is formed into a slope which is inclined so as to gradually increase the distance to the upper case according as the depth of each recessed part goes to the bottom of each recessed part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a technique effective in positioning and fixing an upper case, a liquid crystal display panel and a backlight.

[0002]

2. Description of the Related Art As a display device for personal computers, monitors, televisions, etc., STN (Super Twiste)
d Nematic) method or TFT (Thin Film Transis
The liquid crystal display device of tor) is widely used. In general,
Liquid crystal display devices include personal computers, monitors,
It is used by being incorporated in televisions. For this reason,
The liquid crystal display device is supplied as a "liquid crystal display module" to the assembly process of a personal computer, a monitor, or a television. These liquid crystal display modules are composed of a liquid crystal display panel around which a drive circuit section is arranged, a back unit that illuminates the liquid crystal display panel, and an upper case that covers the liquid crystal display panel and the back unit. For example, in a TFT type liquid crystal display module, a filter substrate on which a color filter is formed, a pixel electrode and a thin film transistor (TFT) are formed on a T substrate.
The FT substrate and the FT substrate are overlapped with each other by a sealing material formed on the peripheral portions of the both substrates so that the surfaces on which the alignment films are formed face each other, and liquid crystal is injected and sealed between the both substrates to form a liquid crystal display panel. Is formed. Note that such a technique is described in, for example, Japanese Patent Laid-Open No. 5-257142.

[0003]

In the liquid crystal display module as described above, a liquid crystal display panel in which a driving circuit section is arranged around and polarizing plates are attached to both surfaces is provided with an upper case having a display window and a backlight. It is stored and configured between. In this case, a plurality of locking pieces are provided on the side wall of the upper case, and the locking pieces are bent inward to form a recess formed in the backlight (more specifically, in the backlight mold (that is, the housing)). The upper case, the liquid crystal display panel, and the backlight are fixed by being locked in the formed recess). At this time, the center of the liquid crystal display panel should be aligned with the center of the upper case.
It is necessary to fix the upper case, the liquid crystal display panel, and the backlight. However, in the locking structure described above, the center of the liquid crystal display panel may deviate from the center of the upper case, and in the worst case, the effective display area of the liquid crystal display panel is a device to which the liquid crystal display module is attached (for example, , Personal computers, etc.) cannot be stored in the display window of the housing. The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to correct the positional deviation between the upper case and the illumination means in the liquid crystal display device to reduce the positional deviation. It is to provide a technology that makes it possible. Another object of the present invention is to fix the upper case, the liquid crystal display panel, and the lighting means in the liquid crystal display device so that the center of the liquid crystal display panel substantially coincides with the center of the upper case. It is to provide the technology that will be possible. The above and other objects and novel features of the present invention will become apparent from the above description of the present specification and the accompanying drawings.

[0004]

Among the inventions disclosed in the present application, a brief description will be given to the outline of typical ones.
It is as follows. The present invention is provided with a liquid crystal display panel having a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, and arranged on the display surface side of the liquid crystal display panel to expose a display area of the liquid crystal display panel. An upper case of a frame body having an opening for allowing the liquid crystal display panel to surround the periphery thereof, and an illuminating unit arranged on a surface opposite to the display surface of the liquid crystal display panel. The case has a plurality of foldable locking pieces on the side wall, the illuminating means is provided for each of the plurality of locking pieces, and has a plurality of recesses into which the bent locking sides are inserted. Applies to display devices. In the present invention, each of the recesses has a surface intersecting with a straight line passing through each of the bent locking sides,
It is characterized in that it is an inclined surface that inclines such that the distance between the upper case and the upper case increases as the depth of each recess increases.

Further, in the present invention, the storage member is
You may have a storage member which stores a light source etc., and in this case, each said recessed part is provided in a storage member. Also,
In the present invention, the plurality of foldable locking pieces provided on each of the side walls are provided such that a tip end portion of each of the locking pieces faces the center of each of the side walls. The inclined surface is provided in line symmetry with respect to a center line passing through the center of each of the side walls and orthogonal to the liquid crystal display panel. According to the above-mentioned means, even if the lighting means is displaced in the upper case, the tip of the locking piece immediately abuts the inclined surface of the recess, so that the deviation of the illumination means can be minimized. It is possible to correct the positional deviation between the upper case and the front surface means and reduce the positional deviation. Further, when a plurality of locking pieces provided on each side wall are bent inward to fix the upper case, the liquid crystal display panel, and the backlight, the tip end of each locking piece is
By touching the inclined surface of each recess, the center of the liquid crystal display panel is made to substantially coincide with the center of the upper case,
It is possible to fix the upper case, the liquid crystal display panel, and the backlight.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings for explaining the embodiments, the same reference numerals are given to those having the same function, and the repeated description thereof will be omitted. [Embodiment 1] <Basic configuration of TFT type liquid crystal display module to which the present invention is applied> FIG. 1 is an exploded perspective view showing a schematic configuration of a TFT type liquid crystal display module (LCM) to which the present invention is applied. Is. FIG. 2 is a cross-sectional view of main parts showing a schematic cross-sectional structure of the liquid crystal display module shown in FIG. Note that FIG. 2 is a sectional view showing a sectional structure taken along a plane orthogonal to the extension direction (or the length direction) of the cold cathode fluorescent lamp 16. The liquid crystal display module shown in FIG. 1 is an active matrix type liquid crystal in which its driving element (semiconductor chip) is mounted on one of a pair of substrates that constitute a liquid crystal display panel by a flip chip attachment (FCA) type mounting method. It is a display module. The main components are as follows.

The liquid crystal display module includes a frame-shaped upper frame (upper case) 4 made of a metal plate, a liquid crystal display panel 5,
It is composed of a back unit (illuminating means). The liquid crystal display panel 5 is shown as an assembled liquid crystal display panel 5 with a drive circuit board, and a pair of substrates (for example, glass or the like having light transmitting property and electrically insulating property) that are stacked with a liquid crystal layer interposed therebetween. (Substantial material) (SUB1, S
UB2) and a plurality of liquid crystal driving semiconductor integrated circuit elements (hereinafter referred to as driving ICs) arranged on one peripheral edge of the pair of substrates.
Group), flexible circuit boards (1, 2) for supplying signals or power to the driving ICs from the outside of the liquid crystal display panel, and the interface circuit board 3. Note that a pixel electrode, a thin film transistor, and the like are formed on the substrate (SUB1), this substrate is generally called a TFT substrate, and a counter electrode, a color filter, and the like are formed on the substrate (SUB2). Also called a filter substrate. This pair of substrates (SUB1, SUB2)
Is affixed to each other with a sealing material provided in the shape of a frame in the vicinity of the peripheral portion between the two substrates, and at the same time, the two substrates are attached from a liquid crystal sealing port provided in a part of the sealing material. Liquid crystal is enclosed and sealed inside the sealing material between them, and polarizing plates (POL1, POL2) are attached to the outside of both substrates.

The flexible printed circuit boards (1, 2) are
It is connected to an interface circuit board (including an integrated circuit element such as a timing converter) 3 provided on the lower surface of the mold 14. In the liquid crystal display module shown in FIG. 1, the flexible printed circuit board 1 is used for a drain driving IC, and the flexible printed circuit board 2 is used for a gate driving IC. As shown in FIG. 2, on the upper side of the assembled liquid crystal display panel 5, an upper frame (also referred to as a shield case, upper case, or metal upper frame) 4 made of a metal plate, whose display window is a liquid crystal It is arranged so as to expose the main surface corresponding to the effective display area of the display panel 5. Therefore, the upper frame 4 has a frame-shaped structure. The frame-shaped configuration means, for example, a structure in which an opening such as the display window is formed on the main surface. Further, a housing (not shown) provided with a display window of a personal computer or the like is covered on the upper side thereof. In the example of a personal computer, the user is
The liquid crystal display panel 5 shown in is viewed from the upper side, and the image displayed in the effective display area is recognized.

Further, as shown in FIG. 2, under the assembled liquid crystal display panel 5, for example, a group of optical sheets (upper diffusion plate 6,
Two prism sheets 7 and a lower diffusion plate 8) are arranged. As shown in FIG. 1, the optical sheet group is laminated by arranging an upper diffusion plate 6 and a lower diffusion plate 8 on the upper and lower sides of two prism sheets 7. The optical sheet group is molded (also referred to as a lower case) 14 at one end by a protrusion.
It is fixed to the side wall 140 formed on the peripheral edge of the. In the mold 14, the light guide 9 is housed on the lower surface of the lower diffusion plate 8 so that the upper surface thereof faces, and the reflection sheet 10 is arranged below the light guide 9. The mold 14 is often integrally formed of white synthetic resin or the like, and the cold cathode fluorescent lamp 16 and the lamp cables (18, 19) are
It is fixed to this by the rubber bush 11. A connector 12 for connection with an inverter circuit is provided at one end of each of the lamp cables (18, 19), and electric power is supplied from an inverter circuit (not shown) provided on the lower surface of the mold 14 to the cold cathode fluorescent lamp 16. Supply.

When a cold cathode tube is used as the cold cathode fluorescent lamp 16, a lamp cable 1 connected to the high-voltage side electrode thereof.
8 is a lamp cable 1 connected to the low-voltage side electrode
The layout of the mold 14 is designed so as to be shorter than 9 and suppress fluctuation and loss of power. A groove 30 for guiding a cable is provided on the side wall 140 of the mold 14, and the lamp cable 19 connected to the low-voltage side electrode of the cold cathode fluorescent lamp 16 is housed in the groove 30. The cold cathode fluorescent lamp 16 is arranged near the side surface of the light guide body 9 and along the side surface of the light guide body 9 in parallel with the side surface of the light guide body 9. The light guide 9 guides the light emitted from the cold cathode fluorescent lamp 16 to the side away from the cold cathode fluorescent lamp 16 and uniformly irradiates the light on the entire liquid crystal display panel. Here, the light guide 9 is formed such that the surface facing the cold cathode fluorescent lamp 16 is wide, and the cold cathode fluorescent lamp 1 is provided.
It is formed in a wedge shape whose cross section becomes smaller as it goes away from 6. The cold cathode fluorescent lamp portion has a substantially U-shaped cross-section, and the inner surface of the reflection sheet 10 has a white or silver color.
It is extended to the bottom. Thereby, the light emitted in a direction different from that of the light guide 9 can be condensed on the light guide 9 without waste.

As described above, the back unit of the liquid crystal display module shown in FIG. 1 includes the cold cathode fluorescent lamp 16, the wedge-shaped (sideways trapezoidal) light guide 9, the diffusion plates (6, 8), the prism sheet 7, The reflection sheet 10 and the reflection sheet 10 are configured to be fitted in a frame-shaped mold 14 having side walls in the order shown in FIG. Then, the assembled liquid crystal display panel 5 is sandwiched and fixed by the upper frame 4 and the backlight unit to complete the liquid crystal display module. In FIG. 2, the semiconductor chip (ICd) that drives each pixel of the liquid crystal display panel is mounted on the side of the liquid crystal display panel 5 on which the cold cathode fluorescent lamp 16 is arranged, but on the opposite side. You may do it. Further, a cushioning member (not shown) is provided on the inner wall of the upper frame 4 facing the drive IC, so as to soften the mechanical shock applied to the liquid crystal display panel 5 and to displace it from the upper frame 4. To prevent. As described above, the liquid crystal display module shown in FIG. 1 is configured such that the liquid crystal display panel 5 on which a plurality of drain drivers and gate drivers are mounted is housed between the upper frame 4 having a display window and the back unit. To be done. The area of the display window of the upper frame 4 constitutes the display area of the liquid crystal display module (LCM), and the area other than this display area, that is, the area around the display window of the upper frame 4 is called a normal frame. .

<Method of Fixing Liquid Crystal Display Module Shown in FIG. 1> FIG. 4 is a schematic perspective view for explaining the upper frame 4 shown in FIG. As shown in FIG. 4, each side wall 40 of the upper frame 4 has a foldable locking piece (or claw) 5.
A plurality of 0s are provided. The locking pieces 50 are each locking piece 50.
Of the locking pieces 50 pass through the center of each side wall 40 and are line-symmetrical with respect to the center line A orthogonal to the liquid crystal display panel 5 as a boundary. Side wall 40
Is formed. FIG. 3 is a view for explaining a conventional fixing method of the liquid crystal display module shown in FIG. 1, and FIG. 3 (a) is a view seen from diagonally above (direction of arrow B shown in FIG. 2). Figure (b) is diagonally below (direction of arrow C shown in Figure 2)
It is the figure seen from. As shown in FIG. 3, in the conventional liquid crystal display module, the locking piece 50 is provided on the side wall 40 of the upper frame 4.
And the concave portion 51 is provided in the mold 14, and the locking piece 50 formed on the upper frame 4 is bent to form the mold 1.
The upper frame 4, the liquid crystal display panel 5, and the back unit are fixed by being locked in the recess 51 of the No. 4. At this time, it is necessary to fix the upper case, the liquid crystal display panel, and the backlight so that the center of the liquid crystal display panel substantially coincides with the center of the upper case. However, in the fixing method shown in FIG. 3, the center of the liquid crystal display panel 5 may deviate from the center of the upper frame 4, and in the worst case, the effective display area of the liquid crystal display panel 4 may be different from that of the liquid crystal display module. There is a problem that the device (for example, a personal computer or the like) to be attached cannot fit inside the display window of the housing.

The above-mentioned problems will be described below.
FIG. 5 is a cross-sectional view showing a section of the locking piece 50 formed on the side wall of the upper frame 4 taken along a plane parallel to the liquid crystal display panel 5 in the conventional liquid crystal display module. Note that FIG. 5 shows a cross section of a state in which the locking piece 50 is bent into the recess 51 formed on the bottom surface side of the side wall 140 of the mold 14. As shown in FIG. 5, there is a gap of Δt1 between the tip of the locking side 50 and one of the surfaces of the recess 51 that is orthogonal to the upper frame 4. Then, a locking piece 50 formed on the long side wall 40 of the upper frame 4,
If both of the locking pieces 50 formed on the side wall 40 on the short side of the upper frame 4 are in contact with the bottom surface of the recess 51 formed on the bottom surface side of the side wall 140 of the mold 14, the backlight is left and right. It does not shift up and down. However, the locking piece 50 formed on the side wall 40 on the long side of the upper frame 4 and the side wall 4 on one short side of the upper frame 4
Only the locking piece 50 formed in 0 abuts on the bottom surface of the recess 51 formed on the bottom surface side of the side wall 140 of the mold 14,
Moreover, the locking piece 50 formed on the side wall 40 on the other short side of the upper frame 4 does not come into contact with the bottom surface of the concave portion 51 formed on the bottom surface side of the side wall 140 of the mold 14, and is shown in FIG. As described above, the tip end portion of the locking piece 50 formed on the side wall 40 on the other short side of the upper frame 4 and the side wall 140 of the mold 14.
If there is a gap (Δt2 in FIG. 6) between the bottom surface of the concave portion 51 formed on the bottom surface side of the upper frame 4 and
Will be displaced in the direction parallel to the long side of.

Further, as shown in FIG. 7, there is a certain margin (Δt3 in FIG. 7) between the size of the upper frame 4 and the outer size of the backlight 20 due to the assembling property. Also,
The liquid crystal display panel 5 is mounted on the backlight 20 with reference to the positioning pins of the backlight 20. However, due to the ease of assembly, there is a gap between the size of the liquid crystal display panel 5 and the size of the backlight 20. , There is a certain margin (Δt4 in FIG. 7). Therefore, only the locking piece 50 formed on the side wall 40 on the long side of the upper frame 4 and the locking piece 50 formed on the side wall 40 on one short side of the upper frame 4 are the side walls of the mold 14. The locking piece 50 that is in contact with the bottom surface of the concave portion 51 formed on the bottom surface side of 140 and is formed on the side wall 40 on the other short side of the upper frame 4 is the side wall 1 of the mold 14.
40 does not come into contact with the bottom surface of the concave portion 51 formed on the bottom surface side of 40,
There is a gap between the tip of the locking piece 50 formed on the side wall 40 on the other short side of the upper frame 4 and the bottom surface of the recess 51 of the mold 14, and the backlight 20 is fixed to the upper frame 4. When the display window formed in the housing of a device (for example, a personal computer or the like) in which the liquid crystal display module is mounted is displaced in a direction parallel to the long side, the liquid crystal display panel is formed in a small size. The display area of 5 does not fit inside the display window of the housing.
The user will see an image in which some images are missing.

<Characteristics of Liquid Crystal Display Module of Embodiment of the Present Invention> FIG. 8 is a perspective view showing a recess 51 formed on the bottom surface side of the side wall 140 of the mold 14 in the liquid crystal display module of the embodiment of the present invention. It is a figure. In addition, FIG.
FIG. 4 is a cross-sectional view showing a cross section of a portion of the locking piece 50 formed on the side wall of the upper frame 4 taken along a plane parallel to the liquid crystal display panel 5 in the present embodiment. In addition, also in FIG.
The cross section of a state in which the locking piece 50 is bent in a recess 51 formed on the bottom surface side of the side wall 140 of the mold 14 is shown. As shown in FIGS. 8 and 9, in the present embodiment, the engaging side 5 formed on the side wall 40 of the upper frame 4 in the recess 51 formed on the bottom surface side of the side wall 140 of the mold 14.
The surface intersecting the straight line passing through 0 is the inclined surface 60. The inclined surface 60 is inclined so that the distance between the side wall 40 of the upper frame 4 and the side wall 40 of the upper frame 4 gradually increases as the depth of the concave portion 51 increases. It is provided in line symmetry with respect to a line passing through the center of the side wall 40 and orthogonal to the liquid crystal display panel 5. Therefore, in the present embodiment, for example, the locking piece 50 formed on the side wall 40 on the long side of the upper frame 4 and the locking piece formed on the side wall 40 on one short side of the upper frame 4. Only 50 is in contact with the inclined surface 60 of the concave portion 51 formed on the bottom surface side of the side wall 140 of the mold 14, and the locking piece 5 formed on the side wall 40 on the other short side of the upper frame 4.
0 does not come into contact with the inclined surface 60 of the concave portion 51 formed on the bottom surface side of the side wall 140 of the mold 14, and the tip portion of the locking piece 50 formed on the other short side wall 40 of the upper frame 4. And the inclined surface 60 of the concave portion 51 formed on the bottom surface side of the side wall 140 of the mold 14, there is a gap, and the backlight 20 is displaced in the direction parallel to the long side of the upper frame 4, Since the tip of the locking piece 50 immediately abuts the inclined surface 60 of the recess 51, the displacement of the backlight 20 can be minimized.

As a result, even if the display window formed in the housing of the device in which the liquid crystal display module is mounted (for example, a personal computer or the like) is formed small, the display of the liquid crystal display panel 5 is displayed. The area no longer fills the display window of the housing.
Further, in the present embodiment, when the upper frame 4, the liquid crystal display panel 5, and the backlight are assembled and fixed, the members formed on the side walls 40 on the long side and the short side of the upper frame 4 are assembled. By bringing the stopper 50 into contact with the inclined surface 60 of the recess 51 formed on the bottom surface side of the side wall 140 of the mold 14, the centers of the long side and the short side of the mold 14 are formed symmetrically. It comes to coincide with the center of the locking piece 50. Therefore, the locking piece 50 is attached to the side wall 4 of the upper frame 4.
The upper frame 4 is formed symmetrically with respect to a center line passing through the center of 0 and orthogonal to the liquid crystal display panel 5.
And the center point of the mold 14 (in other words, the center point of the liquid crystal display panel 5) can substantially coincide with each other. Thus, in the present embodiment, the upper frame 4
When assembling and fixing the liquid crystal display panel 5 and the backlight, the positional deviation between the upper frame 4 and the backlight is corrected, and the positional deviation between the upper frame 4 and the backlight is corrected. It is possible to make it smaller.

Since the mold 14 is generally made of synthetic resin and is made by injection molding, for example, the concave portion 51 having the inclined surface 60 can be easily made by changing the shape of the mold. It is possible. Figure 10
It is sectional drawing which shows the modification of the recessed part 51 of this Embodiment,
It is a figure which shows the cross-section of the part corresponding to the above-mentioned FIG.
In the recess 51 shown in FIG. 10, the inclined surface 60 intersects the surface orthogonal to the side wall 40 of the upper frame 4 of the recess 51,
The inclined surface 60 is extended. Even with the structure shown in FIG. 10, it is possible to obtain the above-described actions and effects. As a liquid crystal display module, for example, a locking piece 50 formed on the side wall 40 of the upper frame 4 is locked to an intermediate frame of the backlight or a lower frame to form the upper frame 4 and the liquid crystal display panel 5. It is also known to fix the backlight and the backlight. It is needless to say that the present invention can be applied even to the liquid crystal display module having such a structure as long as the recessed portion 51 as described above is formed in the middle frame or the lower frame of the backlight. Nor. Further, in the above-described embodiment, the embodiment in which the present invention is applied to the liquid crystal display module of the TFT system has been mainly described, but the present invention is not limited to this, and the present invention is a liquid crystal of the STN system. It goes without saying that it is also applicable to the display module. Although the invention made by the present inventor has been specifically described based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Of course,

[0018]

The effects obtained by the typical ones of the inventions disclosed in the present application will be briefly described as follows. (1) According to the liquid crystal display device of the present invention, an upper case,
It is possible to correct the positional deviation from the backlight and reduce the positional deviation. (2) According to the liquid crystal display device of the present invention, it is possible to fix the upper case, the liquid crystal display panel, and the backlight so that the center of the liquid crystal display panel substantially coincides with the center of the upper case. Become.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a schematic configuration of a TFT type liquid crystal display module (LCM) to which the present invention is applied.

FIG. 2 is a cross-sectional view of main parts showing a schematic cross-sectional structure of the liquid crystal display module shown in FIG.

FIG. 3 is a diagram for explaining a conventional fixing method of the liquid crystal display module shown in FIG.

FIG. 4 is a schematic perspective view for explaining the upper frame shown in FIG.

FIG. 5 is a cross-sectional view showing a cross section of a locking piece formed on a side wall of an upper frame in a conventional liquid crystal display module, taken along a plane parallel to a liquid crystal display panel.

FIG. 6 is a diagram showing a case where there is a gap between a tip end portion of a locking piece formed on a side wall of an upper frame and a bottom surface of a recess formed on a bottom surface side of a side wall of a mold.

FIG. 7 is a diagram for explaining the relationship between the size of the upper frame and the external size of the backlight.

FIG. 8 is a schematic perspective view showing a recess according to the embodiment of the present invention.

FIG. 9 is a view showing a liquid crystal display module according to an embodiment of the present invention, in which a locking piece portion formed on a sidewall of an upper frame is
It is sectional drawing which shows the cross section cut | disconnected by the surface parallel to a liquid crystal display panel.

FIG. 10 is a cross-sectional view showing a modified example of the recess according to the embodiment of the present invention.

[Explanation of symbols]

1, 2 ... Flexible circuit board, 3 ... Interface circuit board, 4 ... Upper frame, 5 ... Liquid crystal display panel, 6,
8 ... Diffusion plate, 7 ... Prism sheet, 9 ... Light guide, 10 ...
Reflective sheet, 11 ... Rubber bush, 12 ... Connector, 1
4 ... Mold, 16 ... Cold cathode fluorescent lamp, 18, 19 ... Cable, 20 ... Backlight, 30 ... Cable guide groove, 40, 140 ... Side wall, 50 ... Locking piece, 51 ... Recess,
60 ... Inclined surface, SUB1, SUB2 ... Substrate, POL1,
POL2 ... Polarizing plate, ICd ... Liquid crystal driving semiconductor integrated circuit element.

Claims (4)

[Claims] 1. A liquid crystal display panel having a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, a liquid crystal display panel disposed on the display surface side of the liquid crystal display panel, and a display area of the liquid crystal display panel. A liquid crystal display including an upper case of a frame having an opening for exposing the liquid crystal display panel, and a side wall covering the periphery of the liquid crystal display panel, and an illumination unit arranged on a surface opposite to a display surface of the liquid crystal display panel. In the device, the upper case has a plurality of foldable locking pieces on the side wall, and the lighting means is provided for each of the plurality of locking pieces, and the bent locking sides are inserted. Each of the recesses has a surface intersecting with a straight line passing through each of the bent locking sides, and the depth between the recesses is deeper, the distance between the recess and the upper case is gradually increased. Inclined surface to be inclined The liquid crystal display device, characterized in that there. 2. A liquid crystal display panel having a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates; a liquid crystal display panel disposed on the display surface side of the liquid crystal display panel, and a display area of the liquid crystal display panel. While having an opening to be exposed, an upper case of a frame body having a side wall covering the periphery of the liquid crystal display panel, and arranged on a surface opposite to the display surface of the liquid crystal display panel,
A liquid crystal display device comprising: a lighting unit having a storage member, wherein the upper case has a plurality of foldable locking pieces on the side wall, and the storage member of the lighting unit has a plurality of locking pieces for each of the plurality of locking pieces. And has a plurality of recesses into which the bent locking sides are inserted, and each of the recesses has a surface intersecting a straight line passing through the bent locking sides, and the depth of the recesses. A liquid crystal display device, wherein the liquid crystal display device is an inclined surface that inclines such that the distance between the upper case and the upper case increases as the depth increases. 3. The plurality of foldable locking pieces provided on each side wall of the upper case are provided such that a tip end portion of each locking piece faces the center of each side wall. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is a liquid crystal display device. 4. The inclined surface of each of the recesses is provided in line symmetry with respect to a center line passing through the center of each side wall of the upper case and orthogonal to the liquid crystal display panel. The liquid crystal display device according to claim 3.