JP2002055629A - Display device bezel and display device using the same - Google Patents

Abstract

(57) [Problem] To provide a display device bezel which can easily adjust a gap between a display panel and a bezel, and a display device using the same. SOLUTION: A bezel 7 for supporting a liquid crystal panel 4 for displaying an image is formed of spring steel or the like.
The liquid crystal panel 4 is pressed by a pressing portion 7a cut and raised from an outer frame portion 7f that covers the peripheral portion of the liquid crystal panel. Was.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a display device bezel for supporting a display panel such as a liquid crystal panel and a display device using the same.

[0002]

2. Description of the Related Art A liquid crystal display device will be described as an example of a conventional display device. FIG. 9 is a partial cross-sectional view of a transmission type liquid crystal display device. The liquid crystal display device 1 has a liquid crystal panel 4 for displaying an image, and a backlight unit 2 provided on the back surface of the liquid crystal panel 4 to irradiate the liquid crystal panel 4 with a light beam.

In the liquid crystal display panel 4, electrodes are formed on a pair of insulating substrates such as a glass substrate. The insulating substrate is arranged so that the electrodes face each other with a gap therebetween via a sealing material, and the liquid crystal layer is sandwiched between the gaps. A polarizing plate 4a is attached to the surface of the insulating substrate.

The backlight unit 2 includes a light source (not shown) such as a cold cathode fluorescent tube, a lamp reflector (not shown), an optical sheet 3 such as a light diffusion sheet 3a and a lens sheet 3b, a light guide plate 5, a reflection plate 6, It has a chassis 8 and a case 9. A light beam emitted from a light source facing the side surface of the light guide plate 5 enters from the side surface of the light guide plate 5 and propagates in the light guide plate 5. Then, the light is emitted from the light emission surface, and is irradiated on the liquid crystal panel 4.

A light diffusion sheet 3a for diffusing a light beam emitted from the light guide plate 5 and a lens sheet 3b for condensing the light beam in a direction normal to the light exit surface are provided between the liquid crystal panel 4 and the light guide plate 5. And the like. The reflection plate 6 reflects the light emitted from the light guide plate 5 in the direction of the light emission surface to increase the brightness of the light emitted from the light emission surface of the light guide plate 5.
The chassis 8 is a housing made of a resin molded product, and components inside the backlight unit 2 are held by the chassis 8. The liquid crystal panel 4 is supported by a chassis 8.

The lower part of the chassis 8 and the light guide plate 5 is a case 9
The backlight unit 2 is held by the case 9 and the chassis 8. The case 9 and the chassis 8 are made of a metal bezel 7 formed by press molding.
It is pinched by. The case 9 and the bezel 7 are assembled by caulking or the like. Bezel 7 is liquid crystal panel 4
The liquid crystal panel 4 is formed in a frame shape with an opened image display portion, and the periphery of the liquid crystal panel 4 is covered with a bezel 7 via a gap 1a.

When the liquid crystal panel 4 is directly pressed and pinched by the bezel 7, when the pressing force of the liquid crystal panel 4 is too strong due to a dimensional error of the chassis 8 or the bezel 7 made of a resin molded product, the inner edge of the bezel 7 is pressed. The pressing force of about 7 g affects the display area of the liquid crystal panel 4, and a good image cannot be obtained. In addition, when a variation occurs in the pressing force, pooling (undulation phenomenon), which is continuous cell pressure unevenness of the liquid crystal panel, occurs in a display image. Thus, the gap 8a is provided between the bezel 7 and the liquid crystal panel 4 by protruding the chassis 8 from the surface of the liquid crystal panel 4.

However, due to the dimensional error of the chassis 8, the gap 1 a may not be secured yet, and the pressing force of the bezel 7 may affect the display area of the liquid crystal panel 4. If the design of the chassis 8 is changed so as to secure the predetermined gap 1a, it is necessary to change the molding die, and the manufacturing cost increases, so that there is a problem that the gap 1a cannot be easily adjusted.

Therefore, the gap 1a can be adjusted so that
A liquid crystal display device 1 as shown in FIG. 10 is known. According to the figure, a resin tape 10 made of PET or the like is stuck on a chassis 8 outside the liquid crystal panel 4. As a result, the resin tape 10 is sandwiched between the chassis 8 and the bezel 7, and an appropriate gap 1a between the bezel 7 and the liquid crystal panel 4 is formed.
Is to be adjusted.

[0010]

However, according to the conventional liquid crystal display device 1 described above, the number of components is increased because the resin tape 10 is required, and a process for attaching the resin tape 10 is required, and the number of manufacturing steps is reduced. There is such a problem. Further, if the bonding position of the resin tape 10 shifts, a desired gap cannot be obtained between the resin tapes 10, which causes a pooling. For this reason, it is necessary to accurately adhere the resin tape 10 to a predetermined position, and the number of manufacturing steps is further increased.

The above problem is not limited to the liquid crystal display device 1 using the liquid crystal panel 4, but also occurs in a display device such as a plasma display panel having another display panel.

An object of the present invention is to provide a display device bezel which can easily adjust the pressure and the gap between the display panel and the bezel, and a display device using the same.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a display device bezel for supporting a display panel for displaying an image, comprising an outer frame portion covering a peripheral portion of the display panel. And a pressing portion projecting from the rear surface of the outer frame portion and elastically deforming by contacting the display panel to press the display panel.

According to this structure, the pressing portion protruding from the rear surface of the outer frame of the display device bezel comes into contact with the display panel and is elastically deformed, and the display panel is held by the elastic force. A gap is secured between the display device bezel and the display panel, and the display panel is held at an appropriate pressure.

Further, in the present invention, in the bezel for a display device having the above-mentioned structure, the pressing portion is formed by cutting and raising a material having a spring property.

Further, in the present invention, in the bezel for a display device having the above structure, the surface of the pressing portion is lower than the surface of the outer frame portion.

Further, the present invention is characterized by comprising a display device bezel having the above-mentioned configuration, and a display panel supported by the display device bezel.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. For convenience of explanation, FIGS.
The same reference numerals are given to the same parts as. Figure 1
1 is a schematic perspective view of a liquid crystal display device according to a first embodiment. FIG. 2 is a sectional view taken along line AA of FIG. Liquid crystal display device 1
Has a liquid crystal panel 4 for displaying an image and a backlight unit 2 for irradiating the liquid crystal panel 4 with a light beam.

The liquid crystal display panel 4 has electrodes formed on a pair of insulating substrates such as a glass substrate, for example. The insulating substrate is arranged so that the electrodes face each other with a gap therebetween via a sealing material, and the liquid crystal layer is sandwiched between the gaps. A polarizing plate 4a is attached to the surface of the insulating substrate.

The backlight unit 2 includes, for example, a light source (not shown) such as a cold cathode fluorescent tube, a lamp reflector (not shown), an optical sheet 3 such as a light diffusion sheet 3a and a lens sheet 3b, a light guide plate 5, a reflection plate 6, It has a chassis 8 and a case 9. The light beam emitted from the light source disposed on the side surface of the light guide plate 5 enters from the side surface of the light guide plate 5 and propagates in the light guide plate 5. Then, the light is emitted from the light emission surface and is irradiated on the liquid crystal panel 4.

A light diffusion sheet 3a for diffusing a light beam emitted from the light guide plate 5 and a lens sheet 3b for condensing the light beam in the normal direction of the light exit surface are provided between the liquid crystal panel 4 and the light guide plate 5. And the like. The reflection plate 6 reflects the light emitted from the light guide plate 5 in the direction of the light emission surface to increase the brightness of the light emitted from the light emission surface of the light guide plate 5.
The chassis 8 is a housing made of a resin molded product.
Backlight unit 2 such as lamp and lamp cover (not shown)
Are held by the chassis 8. The liquid crystal panel 4 is supported by a chassis 8.

The lower part of the chassis 8 and the light guide plate 5 is a case 9
Covered in. The case 9 and the chassis 8 are drawn,
It is sandwiched by a metal bezel 7 formed by press molding including bending and extrusion. The bezel 7 has a frame-shaped outer frame portion 7f (see FIG. 1) in which an image display portion of the liquid crystal panel 4 is opened, and the peripheral portion of the liquid crystal panel 4 is covered with the bezel 7 via a gap 1a. Outer frame 7f
A mounting hole 7e into which a screw or the like is fitted (see FIG. 1)
Is provided. As a result, the liquid crystal display device 1 can be mounted at a predetermined position.

As shown in FIGS. 3A and 3B,
A U-shaped slit 7b is formed in the bezel 7 at the time of press forming, and a cut-and-raised portion 7d is cut and raised from the outer frame portion 7f. As a result, a pressing portion 7a that contacts the peripheral portion of the liquid crystal panel 4 is formed. At this time, since the bezel 7 is made of spring steel or the like having spring properties, the pressing portion 7a is elastically deformed, and the liquid crystal panel 4 is pressed by the elastic force.
As a result, the outer frame portion 7f is separated from the liquid crystal panel 4 to form a gap 1a between the liquid crystal panel 4 and the bezel 7.

Therefore, the gap 1a is formed even when the liquid crystal panel 4 and the bezel 7 come into contact due to a dimensional error of the chassis 8 or the bezel 7. Since the liquid crystal panel 4 is partially pressed by the pressing portion 7a at a position away from the inner edge 7g of the bezel 7, the gap 1a is formed without affecting the display image on the liquid crystal panel 4 to prevent pooling. be able to. Further, there is no need to attach the resin tape 10 (see FIG. 10) to the chassis 8 as in the conventional example, and the number of parts can be reduced because the pressing portion 7a is formed integrally with the outer frame portion 7b. Thereby, the manufacturing cost can be reduced.

Even if the gap 1a does not reach a predetermined amount due to a dimensional error of the chassis 8 or the bezel 7, the elastic force can be varied by the angle of the cut-and-raised portion 7d. The amount of 1a can be easily adjusted. Further, since the surface of the pressing portion 7a is formed lower than the surface of the liquid crystal panel 4 by cutting and raising,
Even if the pressing portion 7a is elastically modified, it does not protrude from the surface of the liquid crystal panel 4. For this reason, an increase in the thickness of the liquid crystal display device 1 can be prevented.

FIGS. 4A and 4B are a plan view and a side sectional view showing the pressing portion 7a of the bezel 7 of the liquid crystal display device 1 of the second embodiment. The pressing portion 7a is formed by a cut-and-raised portion 7d having a trapezoidal planar shape. Other parts are the same as in the first embodiment. Also in the present embodiment, the same effects as in the first embodiment can be obtained.

FIGS. 5A and 5B are a plan view and a side sectional view showing the pressing portion 7a of the bezel 7 of the liquid crystal display device 1 of the third embodiment. The pressing portion 7a has a cushioning member 7c made of silicone rubber, synthetic resin, or the like externally fitted to a rectangular cut-and-raised portion 7d similar to the first embodiment. Even in this case, the same effect as that of the first embodiment can be obtained, and the surface of the liquid crystal panel 4 can be prevented from being damaged. Also,
As shown in the fourth embodiment of FIGS. 6A and 6B, the cushioning member 7c may be cut and raised and adhered to the lower surface of the portion 7d.

FIGS. 7A and 7B are a plan view and a side sectional view showing the pressing portion 7a of the bezel 7 of the liquid crystal display device 1 of the fifth embodiment. In the present embodiment, the bezel 7 is formed of a resin molded product, and the slit 7b and the pressing portion 7a are integrally formed at the time of molding. Other parts are the same as in the first embodiment. Even in this case, the pressing portion 7a has an elastic force, and the same effect as in the first embodiment can be obtained.

In the present invention, the transmission type liquid crystal panel 4 is used.
The liquid crystal display device 1 having the above configuration has been described. However, the same effect can be obtained by a similar configuration in a display device such as a reflective liquid crystal display device, a plasma display panel having another display panel, an EL display device, and a PALC display device. Can be.

[0030]

According to the present invention, since the display panel is partially pressed by the pressing portion away from the inner edge of the bezel, the gap between the display panel and the bezel can be obtained without affecting the display image of the liquid crystal panel. Can be formed to prevent pooling. Further, there is no need to perform the operation of attaching a resin tape to the chassis as in the conventional example, and the pressing portion is formed integrally with the outer frame portion, so that the number of components can be reduced. Thereby, the manufacturing cost can be reduced.

Further, according to the present invention, even when the gap between the display panel and the bezel is not a predetermined amount due to a dimensional error of the chassis or the like, the elastic force can be varied by changing the angle of the pressing portion. Therefore, the amount of the gap can be easily adjusted.

Further, according to the present invention, since the surface of the pressing portion is formed lower than the surface of the display panel, it does not protrude from the surface of the display panel even if the pressing portion is elastically modified. Therefore, an increase in the thickness of the liquid crystal display device can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a partial cross-sectional view illustrating the liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a pressing portion of a bezel of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a pressing portion of a bezel of a liquid crystal display device according to a second embodiment of the present invention.

FIG. 5 is a diagram illustrating a pressing portion of a bezel of a liquid crystal display device according to a third embodiment of the present invention.

FIG. 6 is a diagram illustrating a pressing portion of a bezel of a liquid crystal display device according to a fourth embodiment of the present invention.

FIG. 7 is a diagram illustrating a pressing portion of a bezel of a liquid crystal display device according to a fifth embodiment of the present invention.

FIG. 8 is a partial cross-sectional view showing a conventional liquid crystal display device.

FIG. 9 is a partial sectional view showing another conventional liquid crystal display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 liquid crystal display device 1a gap 2 backlight unit 3 optical sheet 3a lens sheet 3b light diffusion sheet 4 liquid crystal panel 4a polarizing plate 5 light guide plate 6 reflector 7 bezel 8 chassis 9 case 10 resin tape

Claims (4)

[Claims] 1. A display device bezel for supporting a display panel for displaying an image, comprising: an outer frame portion covering a peripheral portion of the display panel; A bezel for a display device, comprising: a pressing portion for pressing the display panel by being elastically deformed by contact with the display panel. 2. The display device bezel according to claim 1, wherein the pressing portion is formed by cutting and raising a material having a spring property. 3. The surface of the pressing portion is made lower than the surface of the outer frame portion.
The bezel for a display device according to 1. 4. A display device, comprising: the display device bezel according to claim 1; and a display panel supported by the display device bezel.