JP3198044B2 - Display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device used for a television receiver, a video projector, a computer terminal, a video camera recorder, a car navigation system, and the like. The present invention relates to a display device having an impact mitigation structure capable of preventing the occurrence of a shock.

[0002]

2. Description of the Related Art Display devices include a plasma device, an electrochromic device, a DMD, a liquid crystal device, and the like, and any of them may adversely affect display characteristics when subjected to a strong external impact.

[0003] Of course, even if an impact is received, the display is often returned to a state in which a good display can be performed. However, in any case, a structure that does not receive a strong external impact is desirable.

[0004] Such an impact resistant structure is disclosed in Japanese Patent Application Laid-Open No. 2-178625, but it is not practical. In particular, the publication does not disclose a shock-resistant structure when a driving IC is mounted on a display element.

On the other hand, the shock-resistant structure of the connection between the drive IC and the display element and the connection between the drive IC and the control circuit are disclosed in US Pat.
P5, 150, 231.

Hereinafter, the shock-resistant structure will be described using a liquid crystal display device as an example.

Conventionally, when a liquid crystal panel as a display panel is fixed to a liquid crystal display device, when a load is applied to the liquid crystal panel, the liquid crystal panel is distorted due to this, and the orientation of the liquid crystal is deteriorated or added to the liquid crystal device. Shock and vibration are transmitted to the liquid crystal panel, and the orientation of the liquid crystal is changed, which causes a problem that image quality is deteriorated. In particular, smectic liquid crystals tend to cause the above-described problems, and the following fixing methods have been employed.

FIG. 28 shows a cross section of the display device.

As shown at 100A in FIG. 28, an adhesive 8 is applied to the periphery of the opening of the panel fixing plate 17, and the liquid crystal panel 1 is placed thereon and adhered and fixed. A circuit board (hereinafter referred to as a driver board) 5 having a role of supplying signals and power to the liquid crystal driving IC 4.
Is fixed to the panel fixing plate 17. Next, the panel fixing plate 17 is suspended from the opening of the fixing plate supporting member (backlight supporting member) 26 via the elastic member 21 so that the lower part and the upper part thereof are substantially closed spaces.

Here, the reason why the lower part and the upper part of the liquid crystal panel are made to have a substantially closed structure will be described. As shown by 100B in FIG. 29, when the liquid crystal device falls in the + y direction, the panel fixing plate 17 moves in the + y direction because it is supported by the elastic member 21. At this time, since the lower part of the liquid crystal panel has a closed structure, air in the closed structure cannot escape to the outside and is compressed. An air damper effect is obtained by the reaction force of the compression, and the impact applied to the liquid crystal panel 1 is reduced. Therefore, the deformation of the liquid crystal panel 1 can be suppressed, and the deterioration of the orientation and the image quality can be prevented.

[0011]

However, it is necessary to increase the screen size while reducing the thickness and weight.
Even though the device has a shock-resistant structure, it is not easy to further improve the shock resistance while satisfying this condition. (1) In particular, as shown by 100B in FIG. 29, when an impact is applied to the liquid crystal device, for example, in the + y direction, the liquid crystal panel 1
Also moves in the + y direction, and the panel fixing plate 17, the elastic member 21
Are arranged on substantially the same plane, so that they deform like a bow as shown in FIG. The deformation stress of the panel fixing plate 17 at this time is transmitted to the panel via the adhesive 8, and the liquid crystal panel 1
May be deformed, and the orientation of the liquid crystal panel 1 and the image quality may be deteriorated. (2) Since the liquid crystal panel 1 and the panel fixing plate 17 for fixing the liquid crystal panel 1 need to move freely enough to absorb the shock, the panel fixing plate 17 of the elastic member 21 and the supporting member can be freely moved. The distance dimension to 10 is large. Therefore, the frame of the liquid crystal display device becomes large. (3) Further, since it is necessary to move the liquid crystal panel 1 and the panel fixing plate 17 for fixing the liquid crystal panel sufficiently far to absorb a shock, the distance between the display panel 9 and the liquid crystal panel 1 or the liquid crystal panel 1 and the lighting member 25 are far apart. For this reason, the liquid crystal device becomes thick. (4) In order to suppress surface reflection on the surface of the display panel 9, it is necessary to perform a non-glare treatment having a strong haze value. Thus, the distance between the display panel 9 and the liquid crystal panel 1 is large. Then, characters and the like displayed on the liquid crystal panel 1 are hardly blurred. (5) When a touch panel is mounted on the display panel 9 as necessary (not shown), if the distance between the display panel 9 and the liquid crystal panel 1 is large as described above, the pen tip becomes If touched, the distance between the member and the liquid crystal panel 1 increases, causing parallax. As a result, there is a possibility that a part of the screen that the user does not want to touch is touched with a pen and input fails. (6) Further, substantially closed spaces need to be provided above and below the entire liquid crystal panel 1, panel fixing plate 17, liquid crystal driving IC 4, driver board 5 for supplying signals to liquid crystal driving IC 4, and elastic member 21. There is. However, the display board 9
A hole 1 through which a cable 15 or the like for supplying a signal from the control board 14 to the driver board 5 or the like is passed through a member forming an enclosed space such as the display panel supporting member 10 fixing the
6 had to be opened, resulting in a high cost for improving the sealing performance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a display device that can withstand a strong impact without hindering a large display screen, a thin device, and a light device. And

Another object of the present invention is to provide a display device which does not deteriorate display characteristics due to an input operation even when input means such as a pen input and a touch panel are provided.

[0014]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an exterior portion forming a space therein.
Material, and a first material arranged along the inner surface of the exterior member.
A plate-like member, and a first gap between the first plate-like member
Second plate-shaped member, and disposed between these plate-shaped members.
Display panel, the first plate-shaped member, and the panel.
Between the panel and the second plate-shaped member and the panel.
Display device comprising: an elastic member disposed between
, A gap between the second plate-shaped member and the exterior member
Wherein a supporting member is disposed on the second member .

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cross section of a display device according to an embodiment of the present invention. Here, reference numeral 1 denotes a display panel as a display element, reference numeral 4 denotes a flexible film wiring having a driving IC chip, and reference numeral 5 denotes a rigid circuit board for supplying a signal to the chip. A driving circuit for driving the panel 1 is configured. Reference numeral 7 denotes a housing as a support member, reference numeral 8 denotes an elastic member, reference numeral 9 denotes a display plate, reference numeral 10 denotes a display plate support member,
Reference numeral 11 denotes an elastic member, and reference numerals 12 and 13 denote substantially closed spaces.

That is, in one embodiment of the present invention, the housing member 7 is arranged on the back surface of the display panel 1 at a predetermined distance, and has a transparent portion on the front surface of the panel so that the display area of the panel can be visually recognized. In the display device on which the display plate 9 is arranged,
A first elastic member 8 is disposed between the panel 1 and the housing member 7 at a position surrounding the display area of the panel, and is surrounded by the first elastic member 8, the panel 1, and the housing member. And a second elastic member 11 is arranged between the panel 1 and the display panel 9 at a position surrounding the display area of the panel 1 so as to form a substantially closed space.
1, a substantially enclosed space surrounded by the panel 1 and the display panel 9 is characterized.

In one embodiment of the present invention, a housing member is disposed at a predetermined distance behind the panel, and the panel is supported by the housing member by a panel fixing member. In a display device in which a display plate having a transparent portion capable of visually recognizing a display area of the panel is provided, a first elastic member is provided between the panel and the panel fixing plate at a position surrounding the display area of the panel. In addition to the arrangement, a third elastic member is arranged between the panel fixing plate and the housing member, and is surrounded by the first elastic member, the third elastic member, the panel, and the housing member. And a second elastic member is disposed between the panel and the display plate at a position surrounding the display area of the panel, and the second elastic member, the panel, and the display plate are formed. Forms a substantially enclosed space surrounded by It is characterized in that was.

In one embodiment of the present invention, a fourth elastic member is arranged between an outer peripheral portion of the panel fixing plate and the housing member.

In the above case, it is desirable that the cross-sectional shape of the first elastic member is smaller in a direction perpendicular to the circumferential direction than in a direction perpendicular to the plane of the panel.

Further, the rubber hardness of the first elastic member is 5
It is preferable that it is 0 degrees or less.

The transparent portion of the display panel may be made of chemically strengthened glass, or the display panel may be formed by bonding an optical film with a pressure-sensitive adhesive on both sides of a transparent substrate.

Further, the housing member may be constituted by a backlight for irradiating the panel with light.

Further, the hardness of the second elastic member is set to be smaller than or equal to the hardness of the first elastic member.

Further, the hardness of the third elastic member is set to be smaller than or equal to the hardness of the first elastic member.

The second elastic member is compressed and arranged in a direction perpendicular to the surface of the panel.

Further, the third elastic member is arranged by being compressed in a direction perpendicular to the surface of the panel.

In a display device having a circuit board for driving the panel disposed on the panel fixing member, a restricting member for restricting vertical movement of the panel fixing member is disposed.

When applied to a smectic liquid crystal panel with the present invention, a remarkable effect is produced.

Since the present invention is configured as described above, even if a strong impact is applied to the display device, it prevents the deterioration of the orientation and the image quality of the display panel, the breakage of the electrical bonding member, and the separation of the bonding portion. And a highly reliable display device can be provided.

FIG. 2 shows another embodiment of the present invention, which includes the basic structure of FIG.

The liquid crystal device shown in FIG.
And an exterior member 3 that supports the internal unit 2.

The exterior member 3 has a space inside, and has a projecting portion 3a protruding into the space. An opening 3b is formed on the upper surface of the exterior member 3.

On the other hand, the internal unit 2 includes the display board support member 1.
0 is provided. The display plate supporting member 10 is arranged so that the upper surface is along the exterior member 3, and an opening 10 a is formed at a position corresponding to the opening 3 b of the exterior member 3. In addition, the opening edge 10 in the display panel support member 10
b is bent so as to form a concave portion 6 with the opening edge portion 3c of the exterior member 3, and a transparent display plate (first plate-like member) 9 is fitted into the concave portion 6 to display the image. The plate 9 is arranged along the inner surface of the exterior member 3. The lower edge 10c of the display plate supporting member 10 is bent outward to form a flange, and a panel fixing plate (second plate-like member) 7 is arranged along the flange. The panel fixing plate 7 and the display plate supporting member 10 are
Are screwed to the protruding portions 3a of the exterior member 3. The display plate 9 and the panel fixing plate 7 are arranged with a predetermined gap therebetween, and the liquid crystal panel 1 is arranged in the gap. The liquid crystal panel 1 has a pair of glass substrates on which electrodes are formed and arranged in parallel, and a liquid crystal is held between the substrates. Also,
The liquid crystal panel 1 has a function as a polarizing plate by attaching polarizing films (not shown) to upper and lower surfaces. On the other hand, between the display panel 9 and the liquid crystal panel 1, the liquid crystal panel 1
The elastic member 11 is arranged so as to surround the display area of the liquid crystal panel 1, the liquid crystal panel 1, the display panel 9, and the elastic member 11 form a closed space 13. Also, the panel fixing plate 7
An elastic member 8 is disposed between the liquid crystal panel 1 and the liquid crystal panel 1 so as to surround the display area of the liquid crystal panel 1.
9 are formed. Further, the liquid crystal panel 1 includes:
TAB4, which is a flexible printed wiring film having a driving IC mounted on its surface, is connected.
A peripheral circuit board (hereinafter, referred to as “driver board”) 5 of the driving IC is connected to AB 4. And
The driver board 5 is fixed to the protruding portion 7a of the panel fixing plate 7 with screws, press fittings and the like. On the other hand, a panel control board (not shown) is fixed to the lower surface of the panel fixing plate 7. The panel control board is connected to the liquid crystal panel 1 via a cable or a driver board 5 (not shown).

When an acceleration accompanying a shock acts in the + Y direction in the figure, the liquid crystal panel 1 attempts to move in the same direction. However, the sealed space 19 functions as an air damper, and the movement and deformation of the liquid crystal panel 1 are suppressed by the elasticity of the elastic member 8. As a result, deterioration of the orientation and image quality of the liquid crystal panel 1 is prevented.

The space 13 functions as an air damper even when an acceleration due to an impact acts in the −Y direction in FIG.
Are suppressed in the same direction, and the same effect can be obtained.

However, when the screen size is increased to 17 inches or more and the acceleration accompanying the impact is excessive, the internal unit 2 itself is deformed as shown in FIG. As a result, the panel fixing plate 7 and the liquid crystal panel 1 are also deformed, and the orientation and the image quality of the liquid crystal panel 1 may be degraded.

Therefore, in still another embodiment of the present invention, the exterior member 3 forming a space inside, the first plate-shaped member 9 arranged along the inner surface of the exterior member, and the first A second plate member 7 disposed on the first plate member 9 with a predetermined gap therebetween, the display panel 1 disposed between these plate members, the first plate member 9, In a display device including elastic members 11 and 8 disposed between the display panel 1 and between the second plate-shaped member 7 and the display panel 1, the second plate-shaped member is provided. A support member was disposed in a gap between the outer member 7 and the outer member 3. In this case, the support member may be fixed to one of the second plate-shaped member and the exterior member. Further, it is preferable that the support member is fixed to both the second plate-shaped member and the exterior member.
Further, a third plate-like member is disposed between the second plate-like member and the display panel, and the display panel and the third plate-like member are arranged.
Between the third plate member and the second plate member.
Elastic members may be arranged between the plate members. In this case, the third plate-shaped member is supported by the exterior member via an elastic member.
It is preferable to do so. Further, the second plate-shaped member may be a backlight device. Further, the second plate-shaped member may be a sidelight-type backlight device including a light guide and a light source disposed around the light guide. Still further, the display panel includes a pair of substrates on which electrodes are formed and arranged in parallel, and a liquid crystal arranged in a gap between the pair of substrates.
May be used. Further, the panel may include a smectic liquid crystal.

Based on the above configuration, even if an excessive impact is applied to the display device and the second plate-like member moves to approach the exterior member, the second plate-like member and the exterior member are moved. Since the support member is arranged in the gap with
The movement is suppressed, and the deformation of the second plate-like member is also suppressed. As a result, movement and deformation of the display panel supported by the second plate-like member via the elastic member are reduced.

Various display devices have been proposed in consideration of impact resistance. FIG. 4 shows an example.

The liquid crystal display device shown in FIG. 4 has upper and lower housings 3d and 3e (hereinafter referred to as "upper housing 3d") which can be opened and closed.
And a "lower housing 3e"), of which an upper housing 3d is provided with a housing opening 3b. A boss 3a is formed on the back surface 3f of the upper housing 3d, and the internal unit 2 is attached to the boss 3a with a screw BT.

The internal unit 2 has a panel fixing plate (second member) 7 which is a transparent plate-like member. The panel fixing plate 7 has a projection 7a formed on the upper surface thereof. ing. The internal unit 2 is provided with the display panel holding member 1.
It has 0. The display plate holding member 10 has an end attached to the panel fixing plate 7 by screws or the like (not shown), and the other portions are separated from the panel fixing plate 7 to form a space together with the panel fixing plate 7. Has formed. The display plate holding member 10 has an opening 10a in a region corresponding to the housing opening 3b described above.
The edge 10b of the opening 10a is bent downward over the entire circumference of the opening. Then, a transparent display plate (first member) 9 is fitted into the edge portion 10a,
The opening 10a is closed.

Incidentally, the liquid crystal panel 1 is arranged between the panel fixing plate 7 and the display plate 9. The liquid crystal panel 1 has a pair of glass substrates arranged in parallel, and transparent electrodes are formed on the surfaces of these substrates, respectively. Liquid crystal is arranged in the gap between these substrates. Further, a polarizing film is stuck on the upper and lower surfaces of the liquid crystal panel 1. Further, an elastic member (second elastic member) is provided between the liquid crystal panel 1 and the display panel 9.
11 are arranged so as to surround the image display area of the liquid crystal panel 1, and an elastic member (third elastic member) 8 is provided between the liquid crystal panel 1 and the panel fixing plate 7. It is arranged so as to surround the area. The elastic member 11, the liquid crystal panel 1, and the display panel 9 form a substantially closed space 13, and the liquid crystal panel 1, the panel fixing plate 7,
Form a substantially closed space 19. The position where the display plate 9 is arranged and the position of the housing opening 3b are as follows.
Both correspond to the image area of the liquid crystal panel 1.

On the other hand, the liquid crystal panel 1 has a driving IC
And a driver board 5 which is a peripheral circuit board of the driving IC, and the driver board 5 is connected to a control board via a flexible cable. (Not shown). Then, the control board is configured to apply a drive signal to the liquid crystal panel 1. Note that the driver board 5 is attached to the above-mentioned ridge portion 7a by a screw or a holding metal (not shown).

Now, assuming that the liquid crystal display device falls in the + y direction shown in FIG. 4 and collides with a floor surface (not shown), the liquid crystal panel 1 attempts to deform in the direction due to the impact. However, the elastic member 8 is disposed between the liquid crystal panel 1 and the panel fixing plate 7, and the substantially closed spaces 13 and 19 are provided.
Function as an air damper, the deformation of the liquid crystal panel 1 is suppressed, and the orientation and the image quality of the liquid crystal panel 1 are favorably maintained.

Similarly, when an impact is applied in the -y direction in the figure, the elastic member 11 and the substantially closed space 1
Due to the actions of 3, 19, the deformation of the liquid crystal panel 1 in this direction was suppressed.

However, the periphery of the internal unit 2 is firmly fixed to the upper housing 3d. Therefore, when the liquid crystal display device falls and the upper housing 3d is deformed,
When the bending moment is transmitted, the internal unit 2 itself, that is, the panel fixing plate 7 and the display panel holding member 10 also
There is a risk of deformation as shown in FIG. When the internal unit 9 is deformed, the liquid crystal panel 1 is also deformed, and the alignment state and the image quality of the liquid crystal in the liquid crystal panel 1 are deteriorated. Such a problem becomes remarkable when the liquid crystal panel 1 is enlarged.

Therefore, according to one embodiment of the present invention, in a display device including an internal unit 2 having a display panel and a housing 3 to which the internal unit is attached, the internal unit 2 and the housing 3 A first elastic member is interposed between the first and second members so that a bending moment caused by deformation of the housing is not transmitted to the internal unit. In this case, the internal unit is screwed to the housing, and the first elastic member is interposed between the internal unit and the housing at the screwed portion. It is preferable.

In this case, the internal unit includes first and second members arranged at a predetermined gap, a display panel arranged at a predetermined gap between the first and second members, and A second elastic member disposed between the first member and the panel; and a third elastic member disposed between the second member and the panel; and A substantially sealed space is formed by the first member and the second elastic member, and the panel, the second
A substantially closed space may be formed by the member and the third elastic member.

Further, a third member is disposed between the second member and the panel, and between the third member and the panel, and between the third member and the second member. The third elastic member is disposed between the panel, the panel, the third elastic member, the third member, and the second
A substantially closed space may be formed by the above member.

Further, the third member has an opening,
The panel may be attached to the third member so as to close the opening, and the opening may correspond to an image area of the panel. In this case, the third member has a panel fixing portion having an opening to which the panel is attached, an attaching portion attached to the second member, and an intervening portion between the panel fixing portion and the attaching portion. And a mounted elastic part.

On the other hand, the second member may be a plate-like member. Further, the second member may be a backlight device, and the panel may emit light from the second member. In this case, the second member may include a transparent light guide, and a light source disposed near the light guide. Further, the light guide may be formed of a transparent acrylic plate. Further, a light diffusing unit may be attached to a surface of the light guide that faces the panel. Still further, a light diffusing unit may be arranged in the opening of the third member.

On the other hand, the first member may be a transparent plate-shaped member, and the display contents of the panel may be recognized through the first member.

On the other hand, the first elastic member may be made of rubber. Further, the second and third elastic members may be made of rubber.

On the other hand, the panel comprises a pair of substrates,
A driving IC for driving the panel; and a driving IC for driving the panel, the driving IC comprising: a driving IC for driving the panel; and a driving IC for driving the panel. May be connected. In this case, the panel may include a smectic liquid crystal.

Based on the above configuration, even if the display device falls and the housing is deformed, the bending moment accompanying the deformation of the housing is not transmitted to the internal unit.

As the display panel used in the present invention, a plasma element, an electrochromic element, a liquid crystal element, a digital micromirror device (DMD) and the like are used.

Of these, a liquid crystal element using a nematic liquid crystal or a smectic liquid crystal as an optical modulator between a pair of substrates is preferable. In particular, in the present invention, a large number of adhesives are dispersed and arranged between substrates so as to keep the thickness of the liquid crystal constant and the orientation of liquid crystal molecules is not disturbed, and the inner surfaces of the substrates are cured by curing the adhesive. Join with resin. This resin is 1 to 10 μm, which is quite small for the pixels of the display panel.
Since it is a column having a diameter or a prism having a diagonal of about 1 to 10 μm, the display is not affected.

When such an adhesive is used, a non-adhesive spacer may be used at the same time.

Regarding such a panel structure, USP
4,740,060, USP 4,989,955.

If a material such as an epoxy resin is used for both the adhesive and the sealing member for sealing the periphery of the substrate, a pair of substrates can be formed at regular intervals in a common process by a heat curing process or a light curing process. Can be fixed.

According to the present invention, the display panel is supported from the outside by an elastic member, and the two substrates are joined to each other with the cured resin in the display panel and the distance between the substrates is kept constant, so that the alignment state of the liquid crystal is further improved. Will be kept.

The elastic member used in the present invention includes a natural resin and a synthetic resin. Specifically, silicone rubber, moltoprene rubber, butyl rubber, an elastic adhesive, and other members are used.

The position where the elastic member is disposed is preferably outside the effective display area of the display panel. If the elastic member is colored, it may be arranged on the transparent portion of the display panel to have a light shielding function.

It is preferable that the resin is disposed continuously or intermittently around the four sides (outer periphery) of the effective display area. However, as shown in FIG. Is no problem.

The supporting means for supporting the display panel used in the present invention is desirably made of an inelastic material. Specifically, the material is plastic, metal, glass, ceramic, or the like.

As described above, since the present invention has an improved shock-resistant structure, even if pen input means such as a digitizer or a touch panel is provided on the display panel, the display does not deteriorate. Further, since the display panel and the display panel are held in parallel, accurate input can be performed.

[0068]

Embodiment ( Reference Example 1) A reference example of the present invention will be described with reference to the drawings. FIG. 6 is a perspective view of a liquid crystal display device according to a reference example of the present invention.
Shows an enlarged cross section taken along the line AA 'in FIG.

In FIG. 7, reference numeral 1 denotes a liquid crystal panel in which a ferroelectric liquid crystal is sandwiched between two opposing glass substrates. The liquid crystal panel 1 has polarizing films attached to the upper and lower surfaces thereof, and also has the function of a polarizing plate.
However, since the polarizing film has no direct relation to the present invention, it is not shown for simplification of the drawing. Reference numeral 4 denotes a driver IC for driving the liquid crystal panel 1, which is formed of a TAB film on which an IC chip is mounted. Reference numeral 5 denotes a driver board for supplying signal power to the driver IC.

The liquid crystal panel 1 is disposed on the first elastic member 8 disposed on the upper surface of the device housing 7 so that the first elastic member 8 just surrounds the display area of the liquid crystal panel 1.・
Fixed. This structure is manufactured by applying a rubber-based (silicone rubber or the like) adhesive exhibiting elasticity after curing in a frame shape on the upper surface of the device housing 7 and mounting the liquid crystal panel 1 thereon, and bonding the liquid crystal panel 1 thereon. .

A display panel 9 is disposed above the liquid crystal panel 1. The display panel 9 is fixed to the display panel support member 10, and the display panel support member 10 is fixed to the apparatus housing 7.

Further, a second elastic member 11 is provided between the display panel 9 and the liquid crystal panel 1.
In the same manner as described above, it is arranged so as to surround the display area of the liquid crystal panel 1. Then, a space 12 formed by the device housing 7, the liquid crystal panel 1, and the first elastic member 8, and a space 13 formed by the display panel 9, the liquid crystal panel 1, and the second elastic member 11 are formed. Both are in a substantially sealed state.

Next, a case where an impact is applied to the liquid crystal panel 1 due to a drop of the liquid crystal display device or the like will be described.

In the + Y direction drop, first, a load is applied to the liquid crystal panel 1 by the impact of the drop, and the liquid crystal panel 1
In the + Y direction. At this time, the deformation of the liquid crystal panel 1 can be suppressed to be small by the air damper effect of the space 12 below the liquid crystal panel 1 and the elasticity of the first elastic member 8, thereby preventing the deterioration of the orientation of the liquid crystal panel 1 and the image quality. You.

Also, with respect to the drop in the −Y direction, the same effect as in the + Y direction can be obtained by the air damper effect of the space 13 above the liquid crystal panel 1 and the elasticity of the second elastic member 11. Conventionally, since the hole 16 through which the cable 15 for connecting the driver board 5 and the panel control board passes is formed in the device housing 7 or the display panel support member 10, the degree of sealing of the space above the liquid crystal panel 1 is low. However, in the present invention, the second elastic member 11 is arranged at the position shown in the figure, so that the degree of sealing is increased and the air damper effect is improved. Reference Example (Reference Example 2) FIG. 8 is an improvement of the Example 1.

As shown in FIG. 8, the liquid crystal panel 1 is fixed to the panel fixing plate 17 via the first elastic member 8, and the panel fixing plate 17 is fixed to the device housing 7. The panel fixing plate 17 has an opening 31 in a range corresponding to the display area of the liquid crystal panel 1. Then, the third elastic member 18 is moved between the panel fixing plate 17 and the device housing 7.
In addition, the panel fixing plate 17 is disposed at a position symmetrical to the first elastic member 8. Then, a space 19 formed by the liquid crystal panel 1, the first elastic member 8, the panel fixing plate 17, the third elastic member 18, and the device housing 7 is substantially closed.

With such a configuration, not only the air damper effect of the space 19 but also the elasticity of the panel fixing plate 17 and the third elastic member 18 at the time of deformation can be used. The effect of cushioning is improved. ( Reference Example 3) In the configuration shown in FIG. 8, the panel fixing plate 1
The elasticity due to the deformation of 7 is also used, but the panel fixing plate 1
If the deformation of the liquid crystal panel 7 becomes excessively large, there is a possibility that a problem that the liquid crystal panel 1 is deformed in accordance with the panel fixing plate 17 may occur.

Therefore, as shown in FIG. 9, a fourth elastic member 21 is disposed between the end face of the panel fixing plate 17 and the inner surface of the opening of the fixing plate supporting member 20, and the panel fixing plate 17 is moved to the first position. 4 and supported by the fixed plate support member 20 via the elastic member 21. In this structure, after the panel fixing plate 17 is disposed in the opening of the fixing plate support member 20, a rubber adhesive is filled between the end surface of the panel fixing plate 17 and the surface of the fixing plate supporting member 20 in the opening. It is manufactured by leaving it for a long time and bonding. And, the fixed plate supporting member 20
Is fixed between the device housing 7 and the display panel support member 10.

According to this embodiment , the deformation of the panel fixing plate 17 is suppressed by the deformation of the fourth elastic member 21.
Therefore, it is possible to suppress the deformation of the panel fixing plate 17 and maintain the effect of alleviating the impact on the liquid crystal panel 1 by the elasticity of the third elastic member 18 and the fourth elastic member 21.

In the conventional configuration, since the elastic member 21 needs to be sufficiently deformed to obtain the relaxation effect,
The panel fixing plate 17 needs to be arranged with a sufficient distance between the display plate 9 and the device housing 7 so as not to contact the display plate 9 and the device housing 7.

However, in the configuration of FIG. 9, the first elastic member 8, the second elastic member 11, and the third elastic member 18 are added to set the amount of deformation of the fourth elastic member 21 to a small value in advance. The display panel 9 and the device housing 7 can be brought close to the panel fixing plate 17, that is, the liquid crystal panel 1. As a result, the parallax between the display panel 9 and the liquid crystal panel 1 can be reduced, display blur can be suppressed, and the thickness of the entire liquid crystal display device can be made smaller than before.

In the configuration shown in FIG. 9, the first elastic member 8
By adding the second elastic member 11 and the third elastic member 18, the width of the fourth elastic member 21 (the panel fixing plate 17
) And the inner surface of the fixed plate supporting member 20) can be made smaller than the value (the width of the elastic member 6) set in the past. For this reason, the frame (the area of the display area) of the liquid crystal display device housing can be made smaller than before.

With respect to the cross section of the first elastic member 8, the relationship between the distance d and the width B between the lower surface of the liquid crystal panel 1 and the upper surface of the panel fixing plate 17 satisfies d ≧ B. This cross-sectional shape is produced by applying the rubber-based adhesive twice so as to be stacked.

The rubber hardness after curing of the rubber adhesive used is set to 50 ° or less.

The reason why the sectional shape and material conditions of the first elastic member 8 are set as described above will be described with reference to FIGS.

In the case of a drop in the + Y direction, the panel fixing plate 17
The elasticity of the third elastic member 18 arranged on the lower side and the space 1
In the case of a drop in the −Y direction, the elasticity of the second elastic member 11 disposed above the panel fixing plate 17 and the air damping effect of the spaces 13 and 19 cause the panel fixing plate 17 to fall in the −Y direction. As described above, the deformation of the first elastic member 8 can be suppressed by setting the cross section of the first elastic member 8 to the shape described above and setting the rubber hardness to 50 ° or less. Panel fixing plate 17
Can be easily deformed in accordance with the deformation of. This prevents the deformation of the panel fixing plate 17 from being transmitted to the liquid crystal panel 1, so that the effect of reducing the impact on the liquid crystal panel 1 is further improved.

Here, as an example, a combination of the value of the distance d and the value of the width B is shown. When a silicone rubber adhesive having a rubber hardness of 35 ° is used, when B = 1.5 (mm), d
= 2.5 ± 0.5 (mm).

Next, the second elastic member 11 and the third
The material of the elastic member 18 is a material having a lower rubber hardness than the silicone rubber used for the first elastic member 8, such as maltprene rubber.

Further, the second elastic member 11 is compressed between the display panel 9 and the liquid crystal panel 1, and the third elastic member 18 is compressed between the panel fixing plate 17 and the device housing 7, respectively.
Fix it.

In the arrangements of FIGS. 7, 8 and 9 described above, the display panel 9 employs chemically strengthened glass which has been subjected to an anti-glare treatment in order to protect the liquid crystal panel 1 and prevent reflection on the surface. However, a film obtained by attaching a film subjected to an anti-glare treatment to glass may be used. Since ordinary glass is more easily broken than chemically strengthened glass, it is difficult to use it as the display panel 9 from the viewpoint of safety. However, by sticking a film thereon, it is possible to prevent fragments from scattering. Withstand use enough. Reference Example 4 In this reference example , the method of supporting the driver board 5 on the device housing 7 or the panel fixing plate 17 in each of the above-described reference examples was improved. FIGS. 12, 13, and 14 show examples in which the driver board 5 is supported by the panel fixing plate 17. FIG. The driver board 5 includes a support rib 22 formed on the upper surface of the panel fixing plate 17 and a driver board restraining elastic member (hereinafter referred to as a restraining elasticity) disposed on the lower surface of the display panel supporting member 10 at a position facing the rib 22. 23) and metal fittings (hereinafter abbreviated as holding metal fittings) 24 attached to the upper surface of the panel fixing plate 2.

At this time, the upper surface of the rib 22 and the pressing elastic member 2
Since the distance between each of the lower surfaces 3 and between the upper surface of the ribs 22 and the lower surface of the retainer 24 is larger than the thickness of the driver board 5, a gap is always formed between the driver board 5 and the retainer 24. I have.

For this reason, the movement of the driver board 5 is free in the ± X and Z directions in FIG. 13 and is lightly restrained in the ± Y directions in FIG. As described above, the first elastic member 8
Is easily deformed by setting the cross-sectional shape of d to be d ≧ B.
The movement amounts in the X, Y, and Z directions also increase. Therefore, the liquid crystal panel 1 and the TCP 4, the TCP 4 and the driver board 5,
It is feared that a load is applied to each electrical connection. However, as shown in FIGS. 12 and 13, the movement of the driver board 5 is free in the ± X and Z directions in the figures and is lightly restrained in the ± Y direction. 24, ± X of the liquid crystal panel 1,
Since it is set smaller than the movement amount in the Z direction, no load is applied. Reference Example 5 In this reference example , as shown in FIG. 15, a backlight unit 25 is arranged instead of the device housing 7 in order to form the substantially closed spaces 19 and 19a below the liquid crystal panel 1.
The backlight unit 25 includes a backlight support member 26.
And a light 27 fixed to the lower side thereof. The light 27 has a tubular light source 28 (hot cathode tube or the like) on each side and a transparent acrylic plate 2 as a light guide at the center.
9 and a sheet (not shown) having a diffusion effect for obtaining scattered diffused light are arranged one on top of the other, and a side light type configuration in which the periphery of the tubular light source 28 is covered with a reflector 30 is adopted.

Further, the sheet having the diffusion effect or the plate-like member 32 having the diffusion effect may be arranged and fixed to the opening 31 of the panel fixing plate 17 so as to cover the opening 31. At this time, the substantially sealed space 19 is vertically divided, but the substantially sealed state of both spaces is maintained, so that the air damper effect is not impaired.

[0094] Each of the above reference examples has a feature that the orientation is likely to be degraded when an impact is applied. Therefore, the ferroelectric liquid crystal has been particularly described as an example. However, this configuration is not limited to other liquid crystal materials (such as nematic liquid crystal). This is also effective for supporting a liquid crystal panel using a.

As described above, the effectiveness of the present configuration does not depend on the type of the liquid crystal material of the liquid crystal panel 1 to be supported.

The first elastic member 8 between the liquid crystal panel 1 and the panel fixing plate 17 was manufactured by bonding the liquid crystal panel 1 and the panel fixing plate 17 with a silicone rubber-based adhesive. The effect does not depend on the type of the adhesive as long as it has rubber hardness.

Similar effects can be obtained by fixing a frame-shaped elastic member manufactured by molding or punching from a sheet with a double-sided tape or the like. As described above, the material, manufacturing method, and fixing method of the frame-shaped elastic member are not limited thereto.

As described above, the same effect can be obtained by disposing the backlight unit 25 in place of the device housing 7, as described above. The effect is not lost even in the used sidelight system and the sidelight system using the hollow light guide. Therefore, the present invention does not depend on the type of the backlight unit.

As described above, according to Reference Examples 1 to 5, the deformation of the liquid crystal panel at the time of a drop impact is suppressed by the air damper effect of the space and the elasticity of the first elastic member itself, and the orientation of the liquid crystal panel is reduced. The quality and the image quality are prevented from deteriorating.

Further, since the third elastic member is disposed between the panel fixing plate and the device casing, it is possible to use the elasticity of the third elastic member when deforming, and to provide an impact on the liquid crystal panel. The effect of relaxation is improved.

Further, since the periphery of the panel fixing plate is suspended by the fixing plate supporting member via the fourth elastic member, the deformation of the panel fixing plate is suppressed by the deformation of the fourth elastic member. The elasticity of the third elastic member and the fourth elastic member maintains the effect of reducing the impact on the liquid crystal panel.

Further, due to the cross-sectional shape and rubber hardness of the first elastic member, the first elastic member is easily deformed, and the deformation of the panel fixing plate when dropped is not transmitted to the liquid crystal panel. By adding such a structure as described above, the effect of alleviating a drop impact on the liquid crystal panel is further improved.

Further, by adding the first elastic member, the second elastic member, and the third elastic member, the amount of deformation of the fourth elastic member can be set to be small in advance. It can be close to a panel fixing plate, that is, a liquid crystal panel. As a result, the parallax between the display panel and the liquid crystal panel is reduced, display blur is suppressed, the thickness of the entire liquid crystal display device can be made smaller than before, and the device can be downsized.

Further, by adding the first elastic member, the second elastic member, and the third elastic member, the width of the fourth elastic member set to be sufficiently deformed can be reduced by the conventional elastic member 6.
Can be made smaller than the width of the liquid crystal display device, so that the frame of the liquid crystal display device housing can be made smaller. (Example 1) First, Embodiment 1 of the present invention will be described with reference to FIG. 16.

The liquid crystal device according to the present embodiment has the exterior member 3e.
And a support member 18a arranged in a gap between the panel fixing plate (second plate-shaped member) 7 and the panel fixing plate (second plate-shaped member) 7. This support member 18a
Has an upper surface fixed to the lower surface of the panel fixing plate 7 and a lower surface in contact with and fixed to the upper surface of the lower exterior member 3e. The support member 18a has a pillar shape.

On the other hand, the elastic members 11 and 8 are made of a rubber-based (silicone rubber or the like) adhesive which has elasticity even after being cured.
The adhesive is applied in the form of a frame to the surface of the liquid crystal panel 1 or the panel fixing plate 7, and then these are bonded to each other.

On the other hand, in the present embodiment, the exterior member 3 is composed of an upper exterior member 3d and a lower exterior member 3e, and the lower exterior member 3e is configured to be able to be appropriately attached and detached.

Next, the operation of the present embodiment will be described.

Now, when the liquid crystal device falls on the floor, + Y
If an excessive impact acts in the direction, the panel fixing plate 7
Is moved in the + Y direction by inertia. However, since the inner unit 2 (panel fixing plate 7) is fixed and supported by the lower exterior member 3e via the support member 18a, the movement is Will be blocked. Therefore, deformation of the liquid crystal panel 1 due to movement and deformation of the internal unit 2 is prevented, and deterioration of the orientation and image quality of the liquid crystal panel 1 is prevented. Also, deformation of the upper exterior member 3d is prevented.

Further, even if the internal unit 2 attempts to move in the −Y direction when an excessive impact acts in the −Y direction,
A tensile force acts on the support member 18a to prevent the movement, and the movement and deformation of the internal unit 2 are prevented.

Next, the effect of this embodiment will be described.

According to the present embodiment, even when an excessive impact acts, the deformation of the liquid crystal panel 1 is suppressed, and as a result, the deterioration of the orientation and the image quality is prevented. (Example 2) Next, with reference to FIG. 17, a description will be given of an embodiment 2 of the present invention.

In this embodiment, the panel fixing plate (third
The plate-shaped member 17 has an opening 31 in a range corresponding to the display area of the liquid crystal panel 1.
A fixed plate supporting member (second plate-shaped member) 7 is arranged below the fixed plate supporting member 7. The fixed plate supporting member 7 is screwed together with the panel fixing plate 17 and the display plate supporting member (first plate member) 10 to the upper exterior member 3d. A frame-like elastic member 18 is arranged between the panel fixing plate 17 and the fixing plate supporting member 7 so as to surround the display area of the liquid crystal panel 1, and the liquid crystal panel 1, the elastic members 8, 18, and the panel fixing member are fixed. Board 7
A closed space 19a is formed by the fixing plate support member 7 and the fixing plate supporting member 7.

A support member 18a is disposed in a gap between the exterior member 3e and the fixed plate support member 7. The upper surface of the support member 18a is fixed to the lower surface of the fixed plate support member 7, and the lower surface is in contact with and fixed to the upper surface of the lower exterior member 3e.

According to the present embodiment, even when an excessive impact is applied, the deformation of the liquid crystal panel 1 is suppressed, and as a result, the deterioration of the orientation and the image quality is prevented.

Further, according to the present embodiment, since the impact on the liquid crystal panel 1 is reduced by the elasticity of the panel fixing plate 17 and the elastic member 18, the deterioration of the orientation and the image quality is more reliably prevented. . (Example 3) Next, with reference to FIG. 18, a description will be given of an embodiment 3 of the present invention.

In this embodiment, a part of the panel fixing plate is constituted by the elastic member 21. That is, the panel fixing plate in this embodiment has a frame-shaped base (fixing plate support member) 20 and the fixing portion 17 that supports the liquid crystal panel 1 and the driver board 5.
The fixed part 17 is connected to the fixed part 17 by an elastic member 21. This connection is obtained by arranging the base portion 20 and the fixing portion 17 in the positional relationship shown in the drawing, and filling and curing a rubber-based adhesive in a gap therebetween. Other configurations are the same as those in the second embodiment .

According to the present embodiment, even when an excessive impact is applied, the deformation of the liquid crystal panel 1 is suppressed, and as a result, the deterioration of the orientation and the image quality is prevented.

According to the present embodiment, since the fixing portion 17 of the panel fixing plate is supported via the elastic member 21, the deformation of the fixing portion 17 is reduced. As a result, the deformation of the liquid crystal panel 1 accompanying the deformation of the fixing portion 17 is reduced,
Deterioration of orientation and image quality is more reliably prevented. (Example 4) Next, with reference to FIG. 19, a description will be given of an embodiment 4 of the present invention.

In this embodiment, the panel fixing plate (third
A backlight support member 26 is provided below the plate-like member 17).
Is arranged. This backlight support member 26 is
An opening 26a is formed in a range corresponding to the display area of the liquid crystal panel 1.
A frame-like elastic member 18 is arranged between the panel fixing plate 17 and the backlight support member 26 so as to surround the display area of the liquid crystal panel 1. A backlight device (second plate member) 25 of a sidelight type is disposed below the backlight support member 26. Note that the backlight device 25 has a transparent acrylic light guide 29, and the light guide 29 is arranged in a range corresponding to the display area of the liquid crystal panel 1. A light source 28 such as a cold cathode tube or a hot cathode is disposed around the light guide 29, and a reflector 30 is disposed behind each light source 28. Further, the light guide 29
, A sheet (not shown) having a light diffusion effect is arranged.

According to the present embodiment, even when an excessive impact acts, the deformation of the liquid crystal panel 1 is suppressed, and as a result, the deterioration of the orientation and the image quality is prevented.

In the above embodiment, the support member 1
Although the column 8a has a column shape, it is needless to say that the column 8a is not limited to this and may be formed in a rib shape.

In the fourth embodiment , the number of the support members 18a is one. However, a plurality of the support members 18a may be used as shown in FIG.

Further, in the above embodiment, both the upper and lower surfaces of the support member 18a are fixed, but either one may be fixed.

In the above embodiment, the elastic member 1
Although 1 is formed with a rubber-based (silicone rubber or the like) adhesive, it is needless to say that the invention is not limited to this. Any adhesive may be used as long as it has the same hardness at the time of curing, and even if it is not an adhesive, a frame-shaped elastic member manufactured by molding or punching from a sheet is fixed with a double-sided tape or the like. It may be something.

Further, in Embodiment 4 described above, a transparent solid acrylic plate is used as the light guide 29, but a hollow light guide may be used. Further, in this embodiment, the backlight device is of a sidelight type, but is not limited to this, and may be of a direct type. Further, in the above-described embodiment, the light diffusing sheet is disposed so as to overlap the light guide 29. However, the present invention is not limited to this, and the light diffusing sheet may be disposed as shown in FIG. That is, the plate-shaped member 60 having the light diffusion effect may be arranged and fixed in the opening 31 of the panel fixing plate 17 so as to cover the opening. At this time,
Although the sealed spaces 19 and 19a are vertically divided, the substantially sealed state of both spaces is maintained, so that the air damper effect is not impaired.

In each of the above embodiments, the liquid crystal panel 1 having a ferroelectric liquid crystal has been described. However, the present invention is not limited to this, and a liquid crystal panel having another liquid crystal material (nematic liquid crystal) may be used. good.

As described above, according to the present invention, even if an excessive impact is given to the liquid crystal device, movement and deformation of the second plate-like member are inhibited by the support member. as a result,
The movement and deformation of the liquid crystal panel supported by the second plate-like member via the elastic member are also suppressed, and the deterioration of the orientation and the image quality of the liquid crystal panel is prevented.

When the support member is fixed to one of the second plate member and the exterior member, the support member is always held at an appropriate position, and the orientation and the image quality are less deteriorated. It is surely prevented.

Further, when the support member is fixed to both the second plate-shaped member and the exterior member, the movement of the second plate-shaped member in the direction approaching the exterior member is prevented.
Not only deformation can be suppressed, but also movement and deformation of the second plate-shaped member in a direction away from the exterior member can be suppressed. Therefore, it is possible to more reliably prevent the deterioration of the orientation and the image quality of the liquid crystal panel. Reference Example 6 First, a reference example of the present invention will be described with reference to FIGS.

In the liquid crystal display according to this embodiment ,
Boss portion 3a and has a gap d ₁ is formed between the inner unit 2, the elastic member in the clearance d ₁ (first elastic member)
51 are arranged. These elastic members 51 are formed in a ring shape by silicone rubber,
It is arranged around the T. That is, the attachment portion between the internal unit 2 and the upper housing 3d has a hinge structure, which appropriately holds the internal unit 2 at a predetermined position and transmits a bending moment from the upper housing 3d to the internal unit 2. To be able to avoid.

In the present embodiment , the elastic member 1
Reference numerals 1 and 8 are formed using a rubber-based (silicon rubber or the like) adhesive that exhibits elasticity after being cured. Specifically, the elastic member 8 is formed by applying the adhesive in a frame shape on the upper surface of the panel fixing plate 7, placing the liquid crystal panel (liquid crystal element) 1, and then curing the adhesive. Have been. The elastic member 11 is formed by the same method.

Next, the operation of the present embodiment will be described.

Now, the liquid crystal display device has the + y shown in FIG.
If it falls in the direction and collides with a floor surface (not shown), the upper housing 3d is elastically deformed into a “mortar shape” in an extreme case. However, the upper housing 3d (more precisely, the boss 3
Since a) and the internal unit 2 are attached via the elastic member 51, transmission of the bending moment from the upper housing 3d to the internal unit 2 is hindered. Therefore, the internal unit 2 is not deformed, the impact absorbing function of the internal unit 2 is sufficiently ensured, and the deterioration of the orientation and the like of the panel can be prevented.

If the liquid crystal display device falls in the −y direction and collides with a floor surface (not shown), the upper housing 3d is deformed, but the bending moment from the upper housing 3d to the internal unit 2 is reduced. Transmission is inhibited as described above. Therefore, the internal unit 2 is not deformed, the impact absorbing function of the internal unit 2 is sufficiently ensured, and the deterioration of the orientation and the like of the panel can be prevented.

Thereafter, when the impact is no longer applied, the elastic member 51 is restored to its original shape, and the internal unit 2 also returns to the predetermined position before receiving the impact.

Next, the effect of this embodiment will be described.

According to this embodiment , since the transmission of the bending moment from the upper housing 3d to the internal unit 2 is suppressed, the deformation of the internal unit 2 itself is prevented. Therefore, the deformation of the liquid crystal panel 1 is prevented, and the orientation and the image quality of the liquid crystal panel 1 are favorably maintained.

It is also possible to tighten the screw BT by a predetermined amount during the assembly so that the elastic member 51 is initially deformed to some extent. In this case, the elastic member 51 functions as a spring washer. Cost is reduced as unnecessary.

Further, according to the present embodiment , the elastic member 51
Is arranged around the screw BT, the displacement of the elastic member 51 is prevented, and the function of cushioning the impact is always maintained satisfactorily.

The gap d ₁ can be obtained by appropriately selecting the amount of projection of the boss 3a and the shape of the display panel holding member 10 in the manufacturing stage. It can be easily obtained by attaching the elastic member 51 of FIG. In the latter case, it is possible to easily obtain a liquid crystal display device having excellent shock resistance without changing the design of the display panel holding member 10 and the upper housing 3d, thereby increasing the cost of the liquid crystal display device. Can be prevented.

In the present embodiment , the elastic member 51
Are disposed between the boss 3a of the housing 3d and the end of the internal unit 2, but these parts (the end of the boss 3a and the end of the internal unit 2) are originally rich in rigidity in the ± y direction. Therefore, it is not necessary to reinforce the elastic member 51 even when the impact load is concentrated. Therefore, an increase in cost due to a design change can be avoided.

In the above-described reference example , the boss 3a of the housing 3d may be formed only at a portion fixed by the screw BT, or may be formed continuously along the end of the internal unit 2. You may do it. Then, even when the boss portion 3a is formed continuously, the elastic member 51 is fixed to the screw B
It may be intermittently interposed only at the fixed portion by T, or may be interposed continuously along the boss 3a formed continuously.

In the above-described reference example , the elastic member 5
1 is arranged between the boss portion 3a and the internal unit 2, but is not limited to this, of course, and the lower side of the internal unit 2 (that is, between the internal unit 2 and the screw BT),
Alternatively, it may be arranged on both upper and lower sides of the internal unit 2. As a result, the elastic member 51 receives a shock in the + y direction,
Alternatively, it functions effectively against impacts in both ± y directions.

Further, the upper housing 3d and the display panel holding member 1
0 to form a gap d ₂ between, may be upper housing 3d is avoided the contact between the panel holding member 10 and the upper casing 3d even when deformed. Furthermore, the gap d
_An elastic member may be interposed in ₂ to prevent dust or the like from entering. The upper housing 3d and the display panel holding member 10
A gap d ₂ not formed, may be brought into contact with the upper housing 3d on the display plate holding member 10 between. In that case, the upper housing 3
By making d thin, transmission of bending moment from upper housing 3d to display panel holding member 10 can be avoided.

On the other hand, in the above reference example , the elastic member 5
Although a silicon rubber was used for 1, a spring member such as a coil spring or a leaf spring or a member having a buffer effect such as an oil damper may be used.

In the above-described reference example , the elastic member 1
Although 1, 8 are formed using a silicone rubber-based adhesive, the present invention is not limited to this, and other adhesives may be used as long as they exhibit elasticity after being cured.
Further, in the above reference example , the elastic members 11 and 8 are
Although the adhesive formed in a frame shape is formed by curing the adhesive, it is needless to say that the present invention is not limited to this, and the frame-shaped elastic member may be fixed by an adhesive means such as a double-sided tape or an adhesive. In this case, the frame-shaped member may be manufactured by molding or by punching a sheet material. Reference Example 7 Next, another reference example of the present invention will be described with reference to FIG.

[0148] Figure 24 is a sectional view showing a structure of a liquid crystal display device according to the present embodiment, in the liquid crystal display device according to the present embodiment, the internal unit 2 is a plate-like member as a second member (Hereinafter referred to as “fixed plate support member”) 7. A panel fixed plate (third member) 17 is provided between the fixed plate support member 7 and the liquid crystal panel (liquid crystal element) 1. Are located. Here, an opening 31 is formed in the panel fixing plate 17 so as to correspond to an image area of the liquid crystal panel 1, and a ridge (rib) 22 is formed on an upper surface thereof. The liquid crystal panel 1 is attached to the panel fixing plate 17 via an elastic member (third elastic member) 8 as in the above-described reference example. The driver board 5 is attached. The end portions of the display plate holding member 10 and the panel fixing plate 17 are attached to the fixing plate support member 7 with screws or the like (not shown), and between the panel fixing plate 17 and the fixing plate support member 7. An elastic member (third elastic member) 18 is arranged along the opening 31. In the present embodiment , the liquid crystal panel 1, the elastic member 18, the panel fixing plate 17,
A substantially closed space 19a is formed by the elastic member 18 and the fixed plate supporting member 7.

Next, the operation of the present embodiment will be described.

Now, assuming that the liquid crystal display device drops in the + y direction and collides with a floor surface (not shown), the upper housing 3d is elastically deformed into a “mortar shape”. However, the upper case 3d
(Accurately, the boss 3a) and the internal unit 2 are attached via the elastic member 51, so that the upper housing 3d
The transmission of the bending moment from the shaft to the internal unit 2 is impeded. Therefore, the internal unit 2 is not deformed, the impact absorbing function of the internal unit 2 is sufficiently ensured, and the deterioration of the orientation and the like of the panel can be prevented.

If the liquid crystal display device falls in the -y direction and collides with a floor surface (not shown), the upper casing 3d is deformed, but the bending moment from the upper casing 3d to the internal unit 2 is reduced. Transmission is inhibited as described above. Therefore, the internal unit 2 is not deformed, the impact absorbing function of the internal unit 2 is sufficiently ensured, and the deterioration of the orientation and the like of the panel can be prevented.

When the liquid crystal display device falls in the + y direction, the liquid crystal panel 1 tends to deform in the same direction, but elastic members 8 and 18 are provided between the liquid crystal panel 1 and the fixed plate supporting member 7. And a substantially closed space 1
Since 3, 19a functions as an air damper, deformation of the liquid crystal panel 1 is suppressed.

Next, the effect of this embodiment will be described.

According to the present embodiment , the transmission of the shock to the liquid crystal panel 1 is reduced by the elasticity of the elastic member 18.

[0155] Further, according to the present embodiment, the same effects as described above.

That is, even when the upper housing 3d is deformed due to a fall or the like, transmission of the bending moment from the upper housing 3d to the internal unit 2 is inhibited, and deformation of the internal unit 2 itself is suppressed. Therefore, the deformation of the liquid crystal panel 1 is prevented, and the orientation and the image quality of the liquid crystal panel 1 are favorably maintained.

Further, by deforming the elastic member 51 to some extent at the initial stage, a spring washer is not required and the cost is reduced. Further, since the elastic member 51 is arranged around the screw BT, the displacement of the elastic member 51 is prevented, and the function of cushioning the impact is always maintained satisfactorily. Reference Example 8 Next, another reference example of the present invention will be described with reference to FIG.

The liquid crystal display according to this embodiment has substantially the same structure as the above-described liquid crystal display, except for the structure of the panel fixing plate (third member).

That is, in this embodiment , the panel fixing plate is composed of the panel fixing portion 17, the elastic portion 21 and the mounting portion 20.
And three parts. Among them, the panel fixing portion 17 has an opening portion 31 as in the above-described reference example, and a ridge portion 22 for mounting the driver board 5 is formed on the upper surface thereof. Further, the liquid crystal panel 1 is mounted on the upper surface of the panel fixing portion 17. On the other hand, the mounting portion 20 is disposed at a position and a shape surrounding the panel fixing portion 17.
An elastic part 21 is formed between the panel fixing part 17 and the panel fixing part 17. The production of the panel fixing plate is performed by arranging the mounting portions 20 at positions surrounding the panel fixing portions 17, filling the gaps with a rubber-based adhesive, and curing. Further, the mounting portion 20 is fixed to the fixed plate support member (second member) 7 and the display plate holding member 10, and these constitute the internal unit 2.

Next, the effect of this embodiment will be described.

According to this embodiment , since the panel fixing portion 17 is supported in a suspended state by the elastic portion 21, even if the upper housing 3d is deformed as in the above-described embodiment , the liquid crystal panel 1 is deformed. Not affected by Also, the mounting portion 20
The transmission of vibration from the panel to the panel fixing portion 17 is also suppressed. As a result, the orientation and image quality of the liquid crystal panel 1 can be favorably maintained.

[0162] Further, according to the present embodiment, the same effects as described above.

That is, even when the upper housing 3d is deformed due to a fall or the like, transmission of a bending moment from the upper housing 3d to the internal unit 2 is inhibited, and deformation of the internal unit 2 itself is suppressed. Therefore, the deformation of the liquid crystal panel 1 is prevented, and the orientation and the image quality of the liquid crystal panel 1 are favorably maintained.

The elastic member 51 is initially deformed to some extent, thereby eliminating the need for a spring washer and reducing the cost. Further, since the elastic member 51 is arranged around the screw BT, the displacement of the elastic member 51 is prevented, and the function of cushioning the impact is always maintained satisfactorily. Reference Example 9 Next, another reference example of the present invention will be described with reference to FIG.

In the liquid crystal display device according to this embodiment ,
A sidelight type backlight device (second member) is arranged instead of the above-mentioned fixed plate support member 7.
This backlight device has a backlight support member 26, and an end of the backlight support member 26 has
Display plate holding member 10 and panel fixing plate (third member) 1
7 etc. are attached. An opening 31 is formed in the backlight support member 26 at a position corresponding to the image area of the liquid crystal panel 1, and the backlight is attached so as to close the opening 31. Further, an elastic member 18 is disposed between the backlight support member 26 and the panel fixing plate 17 along the opening 31. The backlight, the liquid crystal panel 1, the backlight support member 26, and the elastic member 18 A substantially closed space 19a is formed by the panel fixing plate 17 and the elastic member 8.
Here, the light has a transparent acrylic light guide 29, and a tubular light source 28 such as a cold cathode tube or a hot cathode tube is arranged beside the light guide 29. Further, a reflector 30 is arranged so as to cover these light sources 28, so that light from the light sources 28 enters the light guide 29. Further, a reflection sheet (not shown) is arranged on the lower surface of the light guide 29, and a light diffusion sheet (not shown) as light diffusion means is provided on the upper surface (the surface facing the liquid crystal panel 1) of the light guide 29. (Shown) is attached to the liquid crystal panel 1 so that the scattered and diffused light is applied to the liquid crystal panel 1. The backlight unit, the liquid crystal panel 1, the display panel holding member 10 and the like constitute an internal unit 2.

Next, the effect of this embodiment will be described.

According to the present embodiment , the light guide 29 is formed of a thick and hardly deformable acrylic plate, and the light guide 29 is a strength member of the internal unit 2. As a result, even when a strong impact is applied, the deformation of the internal unit 2 itself is prevented. Also, according to this reference example ,
The same effects as the.

That is, even when the upper housing 3d is deformed due to a fall or the like, transmission of the bending moment from the upper housing 3d to the internal unit 2 is inhibited, and deformation of the internal unit 2 itself is suppressed. Therefore, the deformation of the liquid crystal panel 1 is prevented, and the orientation and the image quality of the liquid crystal panel 1 are favorably maintained.

Further, by deforming the elastic member 51 to some extent at the initial stage, a spring washer becomes unnecessary and the cost is reduced. Further, since the elastic member 51 is arranged around the screw BT, the displacement of the elastic member 51 is prevented, and the function of cushioning the impact is always maintained satisfactorily.

Next, another reference example of the present invention will be described with reference to FIG.

In the above-described reference example , a light diffusion sheet (light diffusion means) is adhered to the upper surface of the light guide 29. In this reference example , the light diffusion sheet 60 is attached to the panel fixing portion (third). 17) so that the opening 40 is closed. The light diffusion sheet 60 includes:
A plate-like member having a certain thickness and a certain rigidity is used.

Next, the effect of this embodiment will be described.

According to the present embodiment , the light guide 29 is formed of a thick and hardly deformable acrylic plate, and the light guide 29 is a strength member of the internal unit 2. As a result, even when a strong impact is applied, the deformation of the internal unit 2 itself is prevented. Also, according to this reference example ,
The same effects as the.

That is, even when the upper housing 3d is deformed due to a fall or the like, transmission of the bending moment from the upper housing 3d to the internal unit 2 is inhibited, and deformation of the internal unit 2 itself is suppressed. Therefore, the deformation of the liquid crystal panel 1 is prevented, and the orientation and the image quality of the liquid crystal panel 1 are favorably maintained.

Further, by deforming the elastic member 51 to some extent at the initial stage, a spring washer becomes unnecessary and the cost is reduced. Further, since the elastic member 51 is arranged around the screw BT, the displacement of the elastic member 51 is prevented, and the function of cushioning the impact is always maintained satisfactorily.

In the above-described reference example, an acrylic plate is used as the light guide 29. However, the present invention is not limited to this, and a space may be used as a light guide without using an acrylic plate. . In the above reference example , a sidelight type backlight device was used,
Of course, the present invention is not limited to this, and a direct-type backlight device may be used.

Further, in each of the above embodiments , the ferroelectric liquid crystal is arranged in the liquid crystal panel. However, the present invention is not limited to this, and other liquid crystals (for example, nematic liquid crystal) may be arranged. Is also good.

[0178]

As described above, according to the present invention,
The bending moment accompanying the deformation of the housing is not transmitted to the internal unit. Therefore, the deformation of the internal unit and the liquid crystal element is prevented, and the orientation and the image quality of the liquid crystal element are well maintained.

[0179]

[0180]

[0181]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a display device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a display device according to another embodiment.

FIG. 3 is a diagram for explaining a modification of the display device of FIG. 2;

FIG. 4 is a cross-sectional view of a display device according to another embodiment of the present invention.

FIG. 5 is a diagram showing a modification of the apparatus of FIG. 4;

FIG. 6 is a perspective view of a display device of a reference example .

FIG. 7 is a cross-sectional view of the display device of FIG.

FIG. 8 is a cross-sectional view of a display device according to another reference example of the present invention.

FIG. 9 is a cross-sectional view of a display device according to another reference example .

FIG. 10 is a diagram showing an example in which the liquid crystal display device shown in FIG.
The figure which shows deformation | transformation of a member when an external force is applied to a direction.

FIG. 11 is a diagram showing a liquid crystal display device shown in FIG.
The figure which shows deformation | transformation of a member when an external force is applied to a direction.

FIG. 12 is a diagram showing a method of supporting a driver board of the liquid crystal display device shown in FIG.

13 is a plan view of the liquid crystal display device shown in FIG.

14 is a cross-sectional view of the liquid crystal display device shown in FIG. 13 taken along line AA.

FIG. 15 is a cross-sectional view of a liquid crystal display device in which a backlight unit is arranged instead of the device housing.

FIG. 16 is a cross-sectional view illustrating a structure of a liquid crystal device according to an example of the present invention.

FIG. 17 is a cross-sectional view illustrating a structure of a liquid crystal device according to another embodiment of the present invention.

FIG. 18 is a cross-sectional view illustrating a structure of a liquid crystal device according to another embodiment of the present invention.

FIG. 19 is a cross-sectional view illustrating a structure of a liquid crystal device according to another embodiment of the present invention.

FIG. 20 is a cross-sectional view for explaining another example of the arrangement of the support member.

FIG. 21 is a diagram illustrating an example of the arrangement of a light diffusion sheet.

FIG. 22 is a sectional view showing the structure of a liquid crystal display device according to another embodiment of the present invention.

FIG. 23 is a view for explaining the operation in the embodiment of FIG. 22;

FIG. 24 is a cross-sectional view illustrating a structure of a liquid crystal display device according to another reference example of the present invention.

FIG. 25 is a sectional view showing the structure of a liquid crystal display device according to another reference example of the present invention.

FIG. 26 is a cross-sectional view illustrating a structure of a liquid crystal display device according to another reference example of the present invention.

FIG. 27 is a cross-sectional view showing a structure of a liquid crystal display device according to another reference example of the present invention.

FIG. 28 is a schematic view of a conventional display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 display panel 2 internal unit 3 housing (exterior member) 4 TAB 5 driver board (peripheral circuit board) 7 panel fixing plate (second plate-shaped member) 8 elastic member (first elastic member) 9 display plate (first 1 plate-like member) 10 display plate supporting member 11 elastic member (second elastic member) 13 substantially closed space 19 substantially closed space

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Sato 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP-A-7-28409 (JP, A) JP-A-6 -230352 (JP, A) JP-A-64-91113 (JP, A) JP-A-2-93425 (JP, A) JP-A-4-40272 (JP, U) JP-A-4-40223 (JP, U) ) Japanese Utility Model Application Hei 4-40221 (JP, U) Japanese Utility Model Application Hei 5-30831 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) G02F 1/1333

Claims (9)

(57) [Claims] An exterior member forming a space therein, a first plate-shaped member arranged along an inner surface of the exterior member, and a first gap disposed between the first plate-shaped member and a predetermined gap. A second plate-shaped member, a display panel disposed between these plate-shaped members, a portion between the first plate-shaped member and the panel, and a portion between the second plate-shaped member and the panel. A display device comprising: an elastic member disposed between the panel and a panel, wherein a support member is disposed in a gap between the second plate-shaped member and the exterior member. Wherein said support member, said becomes fixed to one of the second plate-like member or the exterior member, that the display device according to claim 1, wherein. Wherein said support member, said second becomes fixed to both the plate-like member and the outer member, that the display device according to claim 1, wherein. 4. A third plate-like member is disposed between the second plate-like member and the panel, between the panel and the third plate-like member, and between the third plate-like member and the third plate-like member.
Of between the plate member and the second plate member, respectively the elastic member is disposed, a display device of any one of claims 1 to 3. 5. The display device according to claim 4 , wherein the third plate-shaped member is supported by the exterior member via an elastic member. Wherein said second plate member is a back light device, that the display device of any one of claims 1 to 5, characterized in. Wherein said second plate member, claims the light guide, and a side-light type backlight device comprising a light source arranged around the light guide body, characterized in that 1 The display device according to any one of claims 1 to 5 , wherein Wherein said panel has a pair of substrates disposed in parallel with the electrodes are formed, any one of claims 1 to 7 and a liquid crystal disposed pair of substrates gap, consisting of Display device. Wherein said panel comprises a smectic liquid crystal, that display device of any one of claims 1 to 7, characterized in.