JPH0832257A - Holding structure for liquid crystal display - Google Patents

Abstract

PURPOSE:To protect a liquid crystal display against pressure or impact being applied from a holding frame by interposing a resilient frame body between the holding frame and the liquid crystal display while preventing intrusion of foreign matter, e.g. dust, between a display window and the liquid crystal display. CONSTITUTION:The holding structure for a liquid crystal display 11 comprises a housing 12, a board 13, a resilient connector 14 for connecting the liquid crystal display 11 and the board 13 electrically, a holding frame 15 for securing the liquid crystal display 11 to the board 13, and a resilient frame 16 interposed between the liquid crystal display 11 and the holding frame 15. The resilient frame 16 has a rectangular shape corresponding to the holding frame 15 and the resilient frame 16 can be fitted in the holding frame 15. The resilient frame 16 comprises a horizontal frame part (first resilient body) 161 and a vertical frame part (second resilient body) 162 formed integrally. Since the resilient frame 16 absorbs pressure or impact being applied to the liquid crystal display 11 from the holding frame 15, the liquid crystal display 11 is protected against damage.

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 holding structure suitable for portable electronic equipment such as a selective call receiver.

[0002]

2. Description of the Related Art A conventional liquid crystal display holding structure used in a compact electronic device such as a selective call receiver is shown in FIGS.

The liquid crystal display 1 has a box-shaped metal holding frame 2 covering the peripheral edge 1a thereof, and there is elasticity between the electrode surface 1b of the liquid crystal display 1 and the printed wiring board 3. A connector 4 having is arranged. Then, the leg portions 2a of the holding frame 2 are inserted into the square holes 3a formed in the printed wiring board 3, and the tips of the leg portions 2a are twisted on the back surface side of the printed wiring board 3, whereby the holding frame 2 is attached to the printed wiring board 3. The liquid crystal display 1 is attached to the printed wiring board 3 by this.
Is fixed at a predetermined position, and is also electrically connected to the printed wiring board 3 through the connector 4 which is in a state of being in pressure contact with the liquid crystal display 1 and the printed wiring board 3. Then, by mounting the printed wiring board 3 at a predetermined position in the housing 4 of the electronic device, the liquid crystal display 1 has its display surface 1c.
Is a display window 4a formed of a transparent member provided on the housing 4.
It is located in a state of being closely opposed to. Therefore, the operator can confirm the information displayed on the display surface 1c of the liquid crystal display 1 through the display window 4a.

By the way, in this type of holding structure, the housing 4
When a load is applied to the display window 4a and the peripheral portion thereof is deformed, the portion 2b itself of the holding frame 2 that covers the peripheral edge portion 1a of the liquid crystal display 1 may also be deformed, but in the conventional holding structure, As shown in FIG. 12, when the portion 2b of the holding frame 2 is deformed, a load is directly applied to the glass liquid crystal display 1, so that the liquid crystal display 1 may be damaged. Further, even if the holding frame 2 is not deformed when a shock is applied to the housing 4, the shock is transmitted from the metal holding frame 2 to the glass liquid crystal display 1 and the liquid crystal display 1 is damaged. Was sometimes reached.

Further, since there is a gap S between the holding frame 2 and the inner wall surface 4b of the housing 4, foreign matter such as dust may enter through the gap S between the display window 4a and the liquid crystal display 1. Therefore, there is a problem that not only the appearance of the device is impaired but also it becomes difficult to confirm the information on the display surface 1c of the liquid crystal display 1.

[0006]

As described above, in the above-mentioned liquid crystal display holding structure, the liquid crystal display may be damaged by pressure or impact from the holding frame, and the inner wall surface of the housing and the holding frame may be damaged. There is also a problem that foreign matter may enter between the display window and the liquid crystal display through the gap generated between the two.

The present invention has been made to solve the above-mentioned conventional drawbacks. Pressure and impact from the holding frame are less likely to be applied to the liquid crystal display, and the space between the display window of the equipment casing and the liquid crystal display is reduced. An object of the present invention is to provide a holding structure for a liquid crystal display in which foreign matter such as dust does not enter.

[0008]

According to a first aspect of the present invention, there is provided a liquid crystal display holding structure, wherein the liquid crystal display holding structure has rigidity and is attached to a substrate in a state of covering a peripheral portion of the liquid crystal display and fixing the liquid crystal display to the substrate. A holding frame; and a device housing having a display window formed of a light-transmitting material and having the display surface of the liquid crystal display positioned so as to face the display window and having the substrate attached thereto. A frame-shaped elastic body that surrounds the display surface is provided between the liquid crystal display and a portion of the holding frame that faces the peripheral portion on the display surface side of the liquid crystal display. ing.

According to a second aspect of the present invention, there is provided a liquid crystal display holding structure, comprising a holding frame that is rigid and is attached to a substrate in a state of covering a peripheral portion of the liquid crystal display, and that fixes the liquid crystal display to the substrate. A display case of a liquid crystal display having a display window formed of a material having a property, the display frame of the liquid crystal display is positioned so as to face the display window, and the substrate is attached to the holding frame and the liquid crystal. A frame-shaped elastic body surrounding the display surface is provided between at least one of the displays and the device housing.

According to another aspect of the present invention, there is provided a holding structure for a liquid crystal display, comprising: a holding frame that is rigid and is attached to a substrate in a state of covering a peripheral portion of the liquid crystal display; A display window of a liquid crystal display having a display window formed of a material having a property, and a device housing to which the substrate is attached so that the display surface of the liquid crystal display faces the display window. A first elastic body that surrounds the display surface is provided between the liquid crystal display and a portion of the liquid crystal display that faces the peripheral portion of the liquid crystal display on the display surface side. A second elastic body that surrounds the display surface is provided between at least one of the two and the device housing.

A liquid crystal display holding structure according to a fourth aspect is the holding structure according to the third aspect, wherein the first elastic body and the second elastic body are integrally formed.

[0012]

In the holding structure according to the first aspect of the invention, since the frame-shaped elastic body is provided between the holding frame and the liquid crystal display so as to surround the display surface, the pressure applied from the holding frame to the liquid crystal display is increased. The impact is absorbed by the elastic body.

In the holding structure according to the second aspect, a frame-shaped elastic body is provided between the holding frame or the liquid crystal display and the device casing so as to surround the display surface, and the display window and the display surface are provided. The gap that serves as a path for foreign matter to enter can be filled with this elastic body.

The holding structure according to claim 3 has the functions of the inventions according to claims 1 and 2.

In the holding structure according to claim 4, the first and second elastic bodies are integrally formed. Therefore, in addition to the function of the invention according to claim 3, the first and second elastic bodies are manufactured. It has the function of being easy to manage, install and remove.

[0016]

Embodiments of the present invention will be described in detail below with reference to FIGS.

1 to 4 are views showing a first embodiment, FIG. 1 is an exploded perspective view of an electronic device, and FIG. 2 is A-A of FIG.
FIG. 3 is a sectional view taken along the line AA in FIG. 1 in a state where a load is applied to the equipment casing, and FIG. 4 is an enlarged view of a circle B in FIG.

The electronic device according to this example is a selective call receiver similar to the conventional example, and the liquid crystal display 1 in this electronic device is used.
1 has a holding structure, as shown in FIG.
2. A printed wiring board (hereinafter referred to as a board) 13 on which various circuit parts are formed, an elastic connector 14 for electrically connecting the liquid crystal display 11 and the board 13, and the liquid crystal display 11 to the board 1.
3, a holding frame 15 for fixing to 3, and a frame-shaped elastic body 16 interposed between the liquid crystal display 11 and the holding frame 15.

The housing 12 is composed of a housing body 121 formed by plastic molding and a display window 122 fitted and fixed in a hole formed in the housing body 121. The display window 122 is the display surface 11a of the liquid crystal display 11.
It is for confirming the information displayed on the outside of the housing 12, and is formed of transparent plastic.

The holding frame 15 is made of a highly rigid material such as metal so as not to be easily damaged.
Box-shaped so as to cover the peripheral portion 11b of the liquid crystal display 11,
It is formed in a frame shape. Further, the holding frame 15 has a substrate 13
The leg portion 15a is provided corresponding to the square hole 13a formed in the above. The leg portion 15a is inserted from the front surface side of the substrate 13 and its front end is twisted on the rear surface side of the substrate 13, so that the holding frame 15 is formed. It is fixed to the substrate 13.

The elastic body 16 is made of elastic sponge, rubber or the like. The specific material of the elastic body 16 is the elasticity, whether dust is hard to be generated,
It is selected by comprehensively considering various factors such as whether the workability is good, whether it is an easily available material, and whether it is difficult to corrode.

The outer shape of the elastic body 16 is formed into a rectangular frame shape so as to correspond to the holding frame 15, and has a size that can be fitted inside the holding frame 15. Further, as shown in FIG. 4, the cross-sectional shape of the elastic body 16 is formed in an “L” shape, and the horizontal frame-shaped portion (first elastic body) 161 parallel to the horizontal plane and this frame-shaped portion 161. A vertical frame-shaped portion (second elastic body) 162 erected from the inner peripheral edge portion is integrally formed.

Next, the process of mounting the liquid crystal display 11 will be described with reference to FIG.

An elastic body 16 is fitted in the holding frame 15. As a result, as shown in FIG. 2, the elastic body 16 is in a state in which the horizontal frame-shaped portion 161 is in surface contact with the upper frame portion 151 of the holding frame 15, and the vertical frame-shaped portion 162 is in the upper frame portion 1.
It is in a state of protruding upward while being close to the peripheral edge of 51.

The liquid crystal display 11 is in a state in which the peripheral portion 11b is covered with the holding frame 15 in which the elastic body 16 is fitted, and the electrode surface 11c of the liquid crystal display 11 and the substrate 1 are provided.
A connector 14 is arranged between the connector 14 and the connector 3. Then, by attaching the holding frame 15 to the substrate 13 as described above, the liquid crystal display 11 is fixed at a predetermined position on the substrate 13 and also electrically via the connector 14.
Connected to. Then, by mounting the substrate 13 at a predetermined position in the housing 4, the liquid crystal display 11 is positioned such that its display surface 11a is close to and opposite to the display window 122. Therefore, the operator can confirm the information displayed on the display surface 11a of the liquid crystal display 11 through the display window 122.

Since the holding structure of this example has the above-mentioned structure, as shown in FIG. 3, the upper frame portion 151 of the holding frame 15 that covers the peripheral edge portion 11b of the liquid crystal display 11 on the display surface 11a side. The horizontal frame portion 161 of the elastic body 16 is sandwiched between the liquid crystal display 11 and the liquid crystal display 11. Therefore, even when a load is applied to the housing 12 and the display window 122 and its peripheral portion are deformed, and further, the upper frame portion 151 of the holding frame 15 is deformed, as shown in FIG.
Since the horizontal frame-shaped portion 161 of 6 absorbs the pressure of the holding frame 15, the liquid crystal display 11 itself is less likely to be damaged. Further, even if an impact is applied to the holding frame 15 itself due to a fall of the electronic device or the like, the impact of the holding frame 15 is absorbed by the horizontal frame portion 161, so that the impact received by the electronic device is difficult to be transmitted to the liquid crystal display 11.

Further, as shown in FIG. 4, the vertical frame portion 162 of the elastic body 16 is sandwiched between the wall surface 12a of the housing 12 (in this example, the wall surface of the display window 122) and the liquid crystal display 11. Has become. Therefore, foreign matter such as dust passing through the gap S1 formed between the inner wall surface 12a of the housing 12 and the holding frame 15 is blocked by the vertical frame-shaped portion 162, so that the space between the display window 122 and the liquid crystal display 11 is blocked. It is possible to prevent foreign matter from entering.

FIG. 5 is a diagram showing a second embodiment of the present invention. This example shows a case where the horizontal frame-shaped portion 161 and the vertical frame-shaped portion 162 of the elastic body 16 shown in the first embodiment are formed separately. That is, the elastic body 21 has the horizontal frame-shaped portion 16
1 and the elastic body 22 corresponds to the vertical frame portion 162. Other configurations, operations, and effects are the same as those of the first embodiment.

FIG. 6 is a diagram showing a third embodiment of the present invention, and FIG. 7 is a diagram showing a fourth embodiment of the present invention. FIG. 6 shows a case where only the elastic body 21 of the elastic bodies 21 and 22 shown in FIG. 5 is arranged, and FIG. 7 shows a case where only the elastic body 22 of the elastic bodies 21 and 22 is arranged. .

FIG. 8 is a diagram showing a fifth embodiment of the present invention. In this example, the frame-shaped elastic body 23 parallel to the horizontal plane is used for the housing 12.
It shows a case where it is sandwiched between the inner wall surface 12a of the above and the upper frame portion 151 of the holding frame 15. As in this example, by filling the gap S1 formed between the housing 12 and the holding frame 15 with the elastic body 23, it is possible to prevent foreign matter from entering between the display window 122 and the liquid crystal display 11.

FIG. 9 is a diagram showing a sixth embodiment of the present invention. This example shows a case where an elastic body 25 having a U-shaped cross section, which is formed by integrating the elastic body 16 shown in FIG. 4 and the elastic body 23 shown in FIG. 8, is provided. Elastic body 2 of this example
In No. 5, the concave portion 25a can be securely attached to the holding frame 15 by fitting the concave portion 25a into the upper frame portion 151 of the holding frame 15.

[0032]

As described above, in the holding structure according to the first aspect of the present invention, the pressure and impact applied to the liquid crystal display from the holding frame is absorbed by the elastic body, so that the liquid crystal display is prevented from being damaged by the pressure of the holding frame. It can be prevented.

In the holding structure according to the second aspect, since the gap serving as a path for the foreign matter to enter between the display window and the display surface can be filled with the elastic body, the foreign matter enters between the display window and the display surface. Therefore, the appearance of the device is not spoiled, and there is no problem that the information displayed on the display surface is difficult to confirm due to foreign matter.

Since the holding structure according to claim 3 has the first elastic body corresponding to the elastic body according to claim 1 and the second elastic body corresponding to the elastic body according to claim 2, 1 and 2
It also has the effects of the invention.

In the holding structure according to the fourth aspect, since the first and second elastic bodies are integrally formed, in addition to the effect of the invention of the third aspect, the manufacturing of the first and second elastic bodies, management,
This has the effect of facilitating attachment and detachment.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along the line AA of FIG. 1 when a load is applied to the housing.

FIG. 4 is an enlarged view of circle B in FIG.

FIG. 5 is a sectional view showing a second embodiment of the present invention.

FIG. 6 is a sectional view showing a third embodiment of the present invention.

FIG. 7 is a sectional view showing a fourth embodiment of the present invention.

FIG. 8 is a sectional view showing a fifth embodiment of the present invention.

FIG. 9 is a sectional view showing a sixth embodiment of the present invention.

FIG. 10 is an exploded perspective view of a conventional electronic device.

FIG. 11 is a sectional view taken along line DD of FIG. 10;

12 is a DD view of FIG. 10 with a load applied to the housing.
FIG.

[Explanation of symbols]

11 Liquid Crystal Display 11a Display Surface 11b Peripheral Edge 12 Housing 122 Display Window 13 Substrate 15 Holding Frame 161 First
Elastic body 162 Second elastic body

Claims (4)

[Claims] 1. A holding frame, which is rigid and is attached to a substrate in a state of covering a peripheral portion of the liquid crystal display, and which fixes the liquid crystal display to the substrate, and a display window formed of a light-transmitting material. And a device housing to which the substrate is attached so that the display surface of the liquid crystal display faces the display window, and the peripheral edge of the holding frame on the display surface side of the liquid crystal display. A holding structure for a liquid crystal display, wherein a frame-shaped elastic body surrounding the display surface is provided between a portion facing the portion and the liquid crystal display. 2. A holding frame, which has rigidity and is attached to a substrate in a state of covering the peripheral portion of the liquid crystal display, and which fixes the liquid crystal display to the substrate, and a display window formed of a light-transmitting material. A device housing to which the substrate is attached so that the display surface of the liquid crystal display faces the display window, and at least one of the holding frame and the liquid crystal display and the device. A holding structure for a liquid crystal display, wherein a frame-shaped elastic body surrounding the display surface is provided between the housing and the housing. 3. A holding frame, which is rigid and is attached to a substrate in a state of covering the peripheral portion of the liquid crystal display, and which fixes the liquid crystal display to the substrate, and a display window made of a light-transmissive material. And a device housing to which the substrate is attached so that the display surface of the liquid crystal display faces the display window, and the peripheral edge of the holding frame on the display surface side of the liquid crystal display. A first elastic body surrounding the display surface is provided between the liquid crystal display and a portion facing the portion, and at least one of the holding frame and the liquid crystal display and the device housing are provided. A holding structure for a liquid crystal display, characterized in that a second elastic body surrounding the display surface is provided therebetween. 4. The holding structure for a liquid crystal display according to claim 3, wherein the first elastic body and the second elastic body are integrally formed.