JP2001324940A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which ensures the conduction between a front case and a rear case and can prevent the failure of a display panel housed between both cases. SOLUTION: When the conduction is obtained by connecting a peripheral side part 120 of the front case 100 and a peripheral side part 220 of the rear case 200, which cases consist of metal, such as stainless steel and are molded to an L shape, a conducting piece 210 in part of the peripheral side part 220 is further returned, by which the surface of the rear case 200 not stuck with a sheet 250 and the surface of the front case 100 not stuck with a sheet 150 are directly electrically connected. The conduction of both cases 100 and 200 is thereby made sure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device in which a display panel is stored in first and second supports.

[0002]

2. Description of the Related Art In recent years, as a small display device of several inches class for use in digital cameras and the like, for example, a liquid crystal display (LCD) and an organic EL (Elec).
Research and development of toroLuminescence display devices and the like are in progress.

Each of these display devices adopts a structure in which a display panel is housed in a case made of metal.

FIG. 4 shows an exploded perspective view of a conventional LCD.
FIG. 5 shows a perspective view of the assembly, and FIG.
FIG. 5 is a partial cross-sectional view of the LCD taken along a line B (a line BB in FIG. 4).

As shown in FIG. 4, the LCD includes a front case 100 which is a first support member and is made of stainless steel.
The liquid crystal display panel 300 and the rear case 200, which is a second support and made of stainless steel, are stacked and assembled. The state of completion of assembly is as shown in FIG.

[0006] As shown in FIG.
Has a peripheral portion 130 covering the surface peripheral portion of the liquid crystal display panel 300 and a peripheral side portion 120 which is bent substantially at right angles thereto and covers the side edge portion of the liquid crystal display panel 300. That is, the front case 100 is bent in an “L” shape, and the respective portions cover the peripheral edge and the side edge of the liquid crystal display panel 300.

[0007] The peripheral side 120 of the front case 100
The claw protruding portion 1 having a part of the peripheral side portion 120 protruding
01, 102, and 103. This projection 10
1, 102 and 103 are fitted with claw lock portions 201, 202 and 203 of the rear case 200, respectively. Also,
The front case 100 is provided with a window 140 sized so that the display on the liquid crystal display panel 300 can be checked.

Next, a rear case 20 serving as a second support is provided.
Reference numeral 0 denotes a peripheral portion 230 covering the rear peripheral portion of the liquid crystal display panel 300 and a peripheral side portion 220 which is bent substantially at right angles to the peripheral portion and covers the side edge of the liquid crystal display panel 300. That is, the rear case 200 is bent in an “L” shape, and the liquid crystal display panel 3
00 peripheral and side edges.

The peripheral part 220 of the rear case 200 is provided with claw lock parts 201, 202 and 203 formed by cutting out a part of the peripheral part 220. The claw locks 201, 202, and 203 are fitted with claw protrusions 101, 102, and 103 of the front case 100, respectively. In addition, the rear case 200 includes the liquid crystal display panel 30.
A window 240 is provided with a size that allows the display of 0 to be confirmed.

Next, the liquid crystal display panel 300 is a general liquid crystal display panel, and a glass substrate 30 having thin film transistors for driving liquid crystal and display electrodes connected thereto.
1 and a glass substrate 3 provided with a counter electrode facing them
Liquid crystal is sealed between the liquid crystal display device 02 and the liquid crystal display device 02. On one side of the liquid crystal display panel 300, a flexible substrate (FP) for supplying a driving signal such as a scanning signal to a thin film transistor is provided.
C) 303 is connected.

Then, the front case 100 is fitted inside the rear case 200, and the liquid crystal display panel 300 is housed in the gap formed by the fitting of the front case 100, thereby completing the liquid crystal display device. When a backlight as a light source is attached to this liquid crystal display device, for example, the fitting portions 104 of the backlight are provided by fitting holes 104, 105, 204, 205, 206, and 207 provided in the front case 100 and the rear case 200. Mates with

[0012]

However, one surface of the front case 100 and the rear case 200, that is, the surface on which the liquid crystal display panel 300 is disposed, is provided with the liquid crystal display panel 3.
In order to prevent damage such as chipping of the panel due to contact between the front case 00 and the front and rear cases made of metal, a sheet 150 of nylon or polyester is stuck on the entire surface in advance.

That is, as shown in FIGS. 4 and 5, a ground contact for establishing continuity between the front case 100 and the rear case 200 to protect the liquid crystal display panel 300 from static electricity or external electromagnetic waves is provided by the front case 1.
This is realized by making contact C2 between the surface of the rear case 200 opposite to the side where the liquid crystal display panel 300 is disposed and the rear case 200 on the side where the liquid crystal display panel 300 is disposed.

However, in order to make the two cases conductive, the sheet 1 affixed to the inside of the rear case 200 is required.
It is necessary to remove a part of 50 in advance or after processing the rear case 200.

However, when the rear case is still in a flat state, a device for attaching the sheet 150 having an opening to a part thereof is a small display panel, for example, 1 inch to 2 inches.
Since there is no display panel compatible with inch-size display panels, the rear case surface must be exposed after processing the rear case by removing part of the sheet affixed to the peripheral side manually. There is a disadvantage that the number of steps is increased.

Also, without attaching the sheets 150 and 250 inside the front case 100 and the rear case 200 in advance, an insulator having a shape corresponding to the peripheral portions of the two cases 100 and 200 (a shape of "mouth"), for example, Although it is possible to dispose an insulator made of resin, there is a disadvantage that the cost of the separate insulator becomes higher than that of a sheet pasted in advance.

Therefore, the present invention has been made in view of the above-mentioned conventional drawbacks, and ensures the contact between the front case and the rear case at a low cost, thereby causing the stored display panel to be damaged. It is an object of the present invention to provide a display device that prevents the display from being performed.

[0018]

According to the present invention, there is provided a display device, comprising: a display panel; a first support which covers a peripheral edge and a side edge of the display panel; and a peripheral edge and a side of a back surface of the display panel. A display device comprising a second support member covering an edge, wherein the display panel is accommodated in a gap between the first support member and the second support member, wherein the first support member and the second support member The second support is such that the peripheral sides of the two supports that cover the side edges of the display panel are in contact with each other on the side of the peripheral side opposite to the side on which the display panel is arranged. Thus, they are electrically connected.

Further, the above-described display device is a display device having an insulating sheet on a surface of the first and second supports on a side where the display panel is arranged.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The case where the display device of the present invention is applied to a liquid crystal display device will be described below.

FIG. 1 is an exploded perspective view of the liquid crystal display device.
FIG. 2 is an assembly diagram of the liquid crystal display device, and FIG. 3 is a partial cross-sectional view of the liquid crystal display device along the line AA in FIG. 1 and FIG.

As shown in FIGS. 1 and 2, the liquid crystal display device comprises a front case 100 as a first support, a liquid crystal display panel 300, and a rear case 3 as a second support.
0 are sequentially stacked and assembled. That is, the front case 100 and the rear case 200
The liquid crystal display panel 300 is accommodated in a space formed by fitting the liquid crystal display device with the liquid crystal display device 300, and a liquid crystal display device can be obtained. Note that the structure of the liquid crystal display panel 300 is the same as that of the related art, and a description thereof will be omitted.

The front case 100 is made of a metal such as stainless steel or tinplate. The front case 100 is formed into an "L" shape, and a peripheral portion 130 covering the peripheral portion on the front side of the liquid crystal display panel.
And a peripheral side portion 120 that covers a side edge extending in the thickness direction of the liquid crystal display panel 300. Further, a window 140 is formed in the front case 100 so that the display on the liquid crystal display panel can be confirmed.

The peripheral portion 120 has a peripheral portion 12.
Claw protruding portions 101, 102, and 10 projecting a part of the projections 0 toward the side opposite to the side where the liquid crystal display panel 300 is arranged.
3 are provided. The claw projections 101, 102, 1
03 is a claw lock 201, 202,
203.

The claw protrusions 101, 102, and 103 are pressed from the inside to the outside of the assembled LCD to project when the rear case is in a flat state before the rear case is formed into an "L" shape. Is formed.

Next, the rear case 200 will be described.

The rear case 200 includes the front case 10
As in the case of O, it is made of a metal such as stainless steel or tinplate, and is formed in an "L" shape. Liquid crystal display panel 30
0 and a peripheral portion 220 covering a side edge extending in the thickness direction of the liquid crystal display panel 300.
Is formed. Here, the peripheral portion of the liquid crystal display panel 300 refers to a region of a signal input terminal provided around the liquid crystal display panel and a region where a display pixel is formed but does not affect an effective display. Further, the side edge of the liquid crystal display panel 300 indicates a side surface region corresponding to the thickness of the glass substrates 301 and 302 constituting a part of the liquid crystal display panel. These areas are divided into the front case 100 and the rear case 2
00 peripheral side parts 120, 130, 220, 230.

The peripheral side portion 220 of the rear case 200 is located at a position corresponding to each of the claw projections 101, 102, 103 provided on the peripheral side portion 120 of the front case. The claw locks 201, 202, and 203 are provided, and are fitted to the claw locks 101, 102, and 103 of the front case 100.

Each of the claw lock portions 101, 102, 10
3 is formed by forming the windows 240 and the like by pressing or laser irradiation and opening them at the same time when the rear case 200 is in a flat plate state before being formed into an “L” shape.

An insulating sheet such as nylon or polyethylene is attached to the front case 100 and the rear case 200 on the side where the liquid crystal display panel 300 is arranged. This can prevent the glass substrates 301 and 302 of the liquid crystal display panel from being damaged.

Here, the contact between the front case 100 and the rear case 200 will be described.

As shown in FIG. 1 and FIG.
Is an "L" -shaped peripheral portion 22 which is bent substantially perpendicularly to the rear surface of the rear case 200 so as to cover the peripheral edge of the rear case 200 in the thickness direction of the liquid crystal display panel 300.
Part of zero. The contact piece 260 is provided by folding the conductive piece 210 further inward, that is, on the side where the liquid crystal display panel 300 is arranged. That is, the conductive piece 210 and the contact piece 260 form a “U” shape. Note that the conductive piece 210 and the contact piece 2
It does not have to be in a “U” shape due to the close contact with 60, but it is preferable to have a close contact because even a small amount of the display device can be downsized.

As described above, the surface of the front case 100 which is fitted inside the rear case 200 and which is opposite to the side where the liquid crystal display panel 300 is arranged, and the liquid crystal display panel 300 of the rear case 200 are arranged. The contact C1 can be made to the surface opposite to the side. That is,
Contact C1 can be made between the surface of front case 100 where sheet 150 is not attached and the surface of rear case 200 where sheet 250 is not attached. Therefore, the front case 100 and the rear case 200 can be reliably brought into direct contact with each other, the conduction between the two cases can be ensured, and the static electricity generated in the case flows to the rear case connected to the ground. Or by shielding the housed display device from external electromagnetic waves or the like, it is possible to prevent the housed liquid crystal display panel 300 from breaking down and to prevent the liquid crystal display panel 300 from being damaged.
It is also possible to prevent breakage such as chipping of the glass.

Further, it is not necessary to remove a part of the sheet affixed to the peripheral side by manual work after processing the rear case.

Further, without attaching the sheets 150 and 250 inside the front case 100 and the rear case 200 in advance, an insulator having a shape corresponding to the peripheral portions of the two cases 100 and 200 (a shape of “mouth”), for example, The cost is increased by using components other than the front case and the rear case, such as arranging an insulator made of resin or attaching a conductive sheet for conducting the front case 100 and the rear case 200 between the two cases. Can be prevented.

When the liquid crystal display panel 300 is a reflective liquid crystal display panel, the rear case 200 does not require the window 240 corresponding to the display area. Conversely, in the case of a transmissive liquid crystal display panel, the rear case 200 is provided with a window 230 so that light (natural light, backlight light) is supplied from the rear case 200 side. At that time, the fitting holes 104, 105, 204, 205, 206, provided in the front case 100 and the rear case 200 are provided.
A holder containing the backlight is fitted and fixed to 207.

Further, in the above-described embodiment, the case where the liquid crystal display panel 300 is housed in the gap between the front case 100 and the rear case 200 has been described. However, the present invention is not limited to this. The liquid crystal display panel 3 is provided in the space between the rear case 200 and the rear case 200.
00 and the case where a backlight which is a light source of the liquid crystal display panel 300 is housed.

The backlight is a liquid crystal display panel 30.
A light source for supplying light to the light source 0, for example, a cold-cathode tube type backlight or a backlight having a fluorescent lamp on one side of the liquid crystal display panel 300 and a light guide layer for guiding light from the fluorescent lamp to the entire surface. Is fine. With this light source, the light spreads over the entire surface of the liquid crystal display panel 300 and the display can be viewed. The light source is supplied with electric power from the outside and the light source is turned on.

In the above-described embodiment, the case where the front case 100 is fitted inside the rear case 200 has been described. However, the present invention is not limited to this. When the front case 100 is fitted inside, the same effect as when the front case 100 is fitted inside can be obtained.

In the above embodiment, the case where the contact piece 260 is provided on the conductive piece 210 of the rear case 200 has been described. However, the present invention is not limited to this, and the conductive piece of the front case 100 is not limited thereto. It may be provided in the case 110, whereby the same effect as in the case where the case is provided in the rear case 200 can be obtained. Furthermore, even when the contact piece 260 is provided on the conductive piece 110 in this manner, the front case 100 may be fitted inside the rear case 200, or the front case 100 may be fitted inside the rear case 200. May be.

Further, in the above-described embodiment, the case where the contact piece 260 is provided on one side provided with the FPC has been described, but the present invention is not limited to this, and the contact piece 260 is provided on the peripheral side of the other side. The FPC may be provided on the entire periphery other than where the FPC is provided. Further, any number of contact pieces 260 may be provided.
A larger number is better, but a degree that does not increase the size of the display device itself is preferable.

Further, in the above description of the embodiment, the case where the liquid crystal display device is used as the display device has been described. However, the present invention is not limited to the liquid crystal display device, and the present invention is not limited to the liquid crystal display device. It can be applied to various display devices using both cases.

[0043]

According to the display device of the present invention, the front case and the rear case can be reliably brought into direct contact with each other, and a display device capable of reliably establishing conduction between the two cases can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is an assembled perspective view of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 4 is an exploded perspective view of a conventional liquid crystal display device.

FIG. 5 is a partial cross-sectional view of a conventional liquid crystal display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Front case 101, 102, 103 Claw projecting part 106 FPC holder 110, 210 Conductive piece 120, 220 Peripheral part 130, 230 Peripheral part 200 Rear case 201, 202, 203 Claw lock part 204, 205 Claw lock part 260 Contact piece 300 LCD panel 301, 302 Glass substrate 303 FPC

Claims (2)

[Claims] 1. A display panel, a first support that covers a peripheral edge and a side edge of the display panel, and a second support that covers a peripheral edge and a side edge of the display panel. A display device, comprising: a display panel that is accommodated in a gap between the first support and the second support, wherein the first support and the second support are both supported. The peripheral portion covering the side edge portion of the display panel of the body is electrically connected to each other on the opposite side of the peripheral side portion on the side opposite to the side where the display panel is arranged. A display device characterized by the above-mentioned. 2. The display device according to claim 1, wherein an insulating sheet is provided on a surface of the first and second supports on a side where the display panel is arranged.