JP2001083887A - Mounting structure of liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a liquid crystal display device permitting to protect the whole LCD including not only a liquid crystal panel but also a light guide plate or the like, without damaging the LCD by screwing parts or the like for fixing the LCD to a case of a portable type device. SOLUTION: This is a mounting structure of a liquid crystal display device for mounting an LCD 2 in a case provided with an upper case 1 having a window 1a for a display screen and a lower case to be combined with the upper case 1. In this case, this structure has a positioning rib 1b erected in the periphery of the window 1a for the display screen on the back of the upper case 1, a 1st buffer material 3 interposed between the LCD 2 and the back face of the upper case 1, brackets 4 supporting the LCD 2 from the back face side of the LCD 2, and a fixing means 5 for fixing the brackets 4 onto the back face of the upper case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a liquid crystal display device, and more particularly, to a mounting structure of a liquid crystal display device in a portable device requiring impact resistance.

[0002]

2. Description of the Related Art Conventionally, in portable electronic devices and the like,
2. Description of the Related Art Liquid crystal display devices (hereinafter, referred to as "LCDs") are often used to display image information such as characters and figures.

This LCD is a device that converts optical changes such as birefringence into visual information by controlling a specific molecular arrangement of liquid crystal by voltage, and generally forms a transparent electrode. The liquid crystal panel includes a glass substrate and a liquid crystal disposed between the glass substrates, and a backlight device for sharpening the display on the liquid crystal panel. The backlight device includes a cathode fluorescent light source as a light source. A light guide plate and the like for guiding light emitted from the light source to the liquid crystal panel are provided.

[0004] The LCD having the above configuration is mounted and held in a housing of a portable electronic device or the like, and provides image information to a user.

[0005]

However, conventional LCDs
In a portable device equipped with a, the LCD is simply attached to the housing, and a structure in consideration of the impact resistance is employed inside the LCD.

For example, in the technique described in Japanese Patent Application Laid-Open No. 11-153781, a buffer material or the like is mounted inside the LCD to protect the inside.
Only the liquid crystal panel in the LCD could not protect other components such as the light guide plate.

Further, in recent years, the size and weight of the LCD have been required to be reduced, and the space for mounting the cushioning material has also been reduced, and there has been a limit in the impact resistance measures using only the buffer structure in the LCD.

[0008] Further, the demand for a smaller and lighter LCD as described above has also reduced the weight of the screwing portion for fixing the LCD to the housing. There is a possibility that the LCD may be broken from the screwed portion when a shock is applied to the portable device equipped with the.

In view of the above, the present invention has been made in view of the above-mentioned problems in the prior art, and does not break the LCD from a screwing portion for fixing the LCD to the housing of the portable device. It is another object of the present invention to provide a mounting structure of a liquid crystal display device capable of protecting not only a liquid crystal panel but also an entire LCD including a light guide plate and the like.

[0010]

In order to achieve the above object, according to the present invention, a housing having an upper case having a display screen window and a lower case combined with the upper case is provided. A mounting structure of a liquid crystal display device for mounting a liquid crystal display device, comprising: positioning ribs erected around the display screen window on the back surface of the upper case; and back surfaces of the liquid crystal display device and the upper case. And a bracket for supporting the liquid crystal display device from the back side of the liquid crystal display device, and fixing means for fixing the bracket to the back surface of the upper case. Features.

According to the first aspect of the present invention, when an external impact is applied to the housing, the impact is transmitted through the housing and dispersed by the positioning rib provided on the upper case, and then the first cushioning material is provided. Since the shock is reduced and transmitted to the liquid crystal display device, the shock resistance of the liquid crystal display device is increased, and not only the liquid crystal panel but also the entire liquid crystal display device including the light guide plate can be protected.

The invention according to claim 2 is characterized in that a second cushioning material is further interposed between the side surface of the liquid crystal display device and the side surface of the positioning rib.

According to this, when an impact is applied to the housing from the outside, the impact is transmitted through the housing and dispersed by the positioning rib provided on the upper case, and then the impact is reduced by the first cushioning material and the second cushioning material. Then, the liquid crystal display device is transmitted to the liquid crystal display device, so that the shock resistance of the liquid crystal display device is further increased, so that the entire liquid crystal display device including the light guide plate and the like as well as the liquid crystal panel can be more effectively protected.

Further, the invention according to claim 3 is characterized in that the fixing means is a screw which is inserted through an insertion hole formed in the bracket and is screwed with a part of the back surface of the upper case. .

Since the liquid crystal display device is not directly screwed to the back surface of the upper case, even if an external shock is applied to the housing, the shock is not transmitted from the screw, and the liquid crystal display device which has conventionally been generated is not provided. Damage from the provided screwed portion can be prevented.

[0016]

Next, a specific example of an embodiment of a mounting structure of a liquid crystal display device according to the present invention will be described with reference to the drawings.

FIG. 1 shows a first embodiment of the mounting structure of the liquid crystal display device according to the present invention, which is drawn with the liquid crystal display surface facing downward.

The mounting structure of this liquid crystal display device is an LCD 2
Are mounted on the upper case 1 as a part of a casing of a portable device or the like (not shown).
b, the first cushioning member 3, the bracket 4, the second cushioning member 6, and the like.

The upper case 1 and a lower case (not shown) constitute a housing of a portable device. The upper case 1 is formed of ABS resin or a resin mold obtained by adding carbon fiber, glass fiber, inorganic filler or the like to ABS resin, or a magnesium alloy. Or an aluminum alloy. The upper case 1 has a flat rectangular display screen window 1a, and is 4 to 5 mm outwardly from the outer dimensions of the LCD 2 on the rear surface thereof.
A positioning rib 1b is provided at a remote location.

The positioning rib 1b is an LCD in FIG.
The positioning rib 1b is preferably provided at the same height as that of the second cushioning member 6 and the LCD 2.

A first space is provided between the LCD 2 and the upper case 1.
The cushioning material 3 is interposed, and the side of the positioning rib 1b and the LCD
The second cushioning member 6 is interposed between the second side surface and the second side surface.

The first cushioning material 3 and the second cushioning material 6 are formed of an elastic material such as silicone rubber, monofoamed rubber or the like, or styrofoam or the like which hardly changes over time.
It is preferable that the material has a hardness that does not cause deformation due to its own weight.

Further, as shown in FIG. 2, in order to fix the LCD 2 in the vertical direction, the bracket 4 is attached to the upper case 1 to which the first cushioning material 3 is attached from the rear side of the LCD 2.
Is fixed to the upper case 1 via the screw 5 so as to sandwich the. The screw 5 is inserted through an insertion hole (not shown) formed in the bracket 4 and screwed with a part of the back surface of the upper case 1.
In this embodiment, three brackets 4 are arranged, but the number of brackets 4 to be mounted is not limited.

The material of the bracket 4 is preferably a metal having a small specific gravity, such as aluminum, from the viewpoint of strength and weight reduction of the portable device. However, ABS resin or ABS resin or carbon fan bar / glass fiber / inorganic filler or the like is preferable. It is also possible to use a highly rigid resin to which is added.

With the above configuration, the horizontal direction and the upward direction of the LCD 2 are held through the cushioning members 3 and 6, so that the impact is transmitted to the LCD through the cushioning members 3 and 6 with respect to the impact from the outside of the apparatus. .

The second cushioning member 6 located around the LCD 2 in the horizontal direction has a constant reaction force. That is,
By mounting the second cushioning member 6 while compressing it by 5 to 10%, it is possible to prevent the LCD 2 from shifting from the center position of the display screen window 1 a of the upper case 1.

Next, the operation of the mounting structure of the liquid crystal display device having the above configuration will be described with reference to FIG.

When an external force or an external impact 11 such as when the portable device is dropped is applied to the upper case 1 of the portable device, the impact is transmitted to the upper case 1 and dispersed while positioning ribs 1b. Transmitted to. The force 12 transmitted to the positioning rib 1b is equalized by the positioning rib 1b, transmitted to the second cushioning material 6 around the LCD 2, and the external force 12 is reduced by the second cushioning material 6, and finally transmitted to the LCD 2. .

Therefore, the impact 11 from the outside of the apparatus is transmitted to the upper case 1 and immediately before being transmitted to the LCD 2, the impact is absorbed by the second cushioning material 6 around the LCD 2, and the damage of the LCD 2 can be prevented.

Next, a second embodiment of the mounting structure of the liquid crystal display device according to the present invention will be described with reference to FIG.

When the LCD 2 is mounted on a portable device, since the LCD 2 is provided with a connection cable and a connector, it may be difficult to attach a cushioning material to the cable and the connector. In such a case, the notch portions 6a and 6b are provided in the second cushioning member 6, and the LCD 2 is mounted. Other configurations are the same as in the first embodiment.

With this configuration, even if the LCD 2 is not completely surrounded by the second cushioning member 6, external impact on the LCD 2 via the second cushioning member 6 and the second impact member 6 is reduced. be able to.

Next, a third embodiment of the mounting structure of the liquid crystal display device according to the present invention will be described with reference to FIG.

The portable device having the LCD 2 includes an LCD.
In some cases, a touch panel or a protection panel is provided on the surface side of the liquid crystal of No. 2. In such a case, upper case 1
Then, a touch panel (or protection panel) 7 is attached via the first cushioning material 3. Other configurations are the same as in the first embodiment.

Then, the LCD 2 is mounted on the touch panel 7 via the spacer 8. The purpose of providing the spacer 8 is to open a space between the liquid crystal and the touch panel 7, and the material of the spacer 8 may be an insulator. Preferably, the material of the base material of the touch panel 7 is glass, and the material of the protection panel is glass or acrylic resin.

Next, a fourth embodiment of the mounting structure of the liquid crystal display device according to the present invention will be described with reference to FIG.

In the present embodiment, the first cushioning material 3 is mounted between the LCD 2 and the upper case 1, and the gap between the positioning rib 1b for restricting the horizontal movement of the LCD 2 and the LCD 2 is set to 0 mm. . That is, the second cushioning member 6 in the above embodiment is omitted. The manner of fixing the LCD 2 in the vertical direction is the same as that in the above embodiment.

With this configuration, the LCD 2
In response to an external impact in the horizontal direction, the impact is transmitted to the upper case 1, equalized by the positioning rib 1 b, and transmitted to the LCD 2. Thereby, the impact on the LCD 2 is equalized, and it is possible to prevent the concentrated stress from being applied to the LCD 2.

On the other hand, with respect to an external impact on the LCD 2 in the vertical direction, the impact can be alleviated by the first buffer material 3 and transmitted to the LCD 2.

In this embodiment, the impact resistance in the horizontal direction is lower than in the first to third embodiments, but the impact resistance is lower than when the LCD 2 is directly screwed to the upper case 1. Improves.

[0041]

As described above, according to the present invention,
A liquid crystal display that can protect not only the liquid crystal panel but also the entire liquid crystal display device, including the light guide plate, and can prevent damage from the screw-fastened parts provided in the conventional liquid crystal display device. An apparatus mounting structure can be provided.

[Brief description of the drawings]

FIG. 1 is a first view of a mounting structure of a liquid crystal display device according to the present invention.
It is an exploded perspective view showing an example.

FIG. 2 is a cross-sectional view of a mounting structure of the liquid crystal display device of FIG.

FIG. 3 is an explanatory diagram of an operation of a mounting structure of the liquid crystal display device of FIG. 1;

FIG. 4 is a second view of the mounting structure of the liquid crystal display device according to the present invention.
It is a top view showing an example.

FIG. 5 is a third view of the mounting structure of the liquid crystal display device according to the present invention.
It is sectional drawing which shows an Example.

FIG. 6 is a fourth view of the mounting structure of the liquid crystal display device according to the present invention.
It is an exploded perspective view showing an example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper case 1a Window for display screen 1b Positioning rib 2 LCD 3 1st cushioning material 4 Bracket 5 Screw 6 2nd cushioning material 6a, 6b Notch 7 Touch panel (or protective panel) 8 Spacer 11 External shock 12 To positioning rib Power transmitted

Claims (3)

[Claims] 1. A mounting structure of a liquid crystal display device for mounting a liquid crystal display device on a housing including an upper case having a display screen window and a lower case combined with the upper case, Positioning ribs standing upright around the display screen window on the back surface of the upper case; a first cushioning material interposed between the liquid crystal display device and the back surface of the upper case; A mounting structure for a liquid crystal display device, comprising: a bracket for supporting the rear surface side of the liquid crystal display device; and fixing means for fixing the bracket to the rear surface of the upper case. 2. A mounting structure for a liquid crystal display device, further comprising a second cushioning material interposed between a side surface of the liquid crystal display device and a side surface of the positioning rib. 3. The liquid crystal according to claim 1, wherein the fixing means is a screw that is inserted into an insertion hole formed in the bracket and that is screwed with a part of the back surface of the upper case. Display device mounting structure.