JP3322629B2 - Liquid crystal display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid crystal display device housed in a support.

[0002]

2. Description of the Related Art In recent years, a small liquid crystal display device (LCD: Liquid Cryst) of several inches class has been used for digital cameras and the like.
al Display). FIG. 9 shows an exploded perspective view and an assembled perspective view of a conventional liquid crystal display device.
FIG. 3A shows a first support body composed of a front case 21.
I, (b) liquid crystal display panel III, (c) spacer
IV, (d) the second support II consisting of the rear case,
(E) shows the assembled liquid crystal display device.

[0003] Front case 21, liquid crystal display panel II
By laminating I, the spacer IV, and the rear case 26 in this order and combining them, the liquid crystal display device shown in FIG. 9E can be manufactured. The first support I includes a front case 21 provided with a window corresponding to a display area 24 for displaying an image or the like of the liquid crystal display panel III. An insulating resin film is stuck on the inner surface of the front case 21, that is, on the liquid crystal display panel side (not shown).

As shown in FIG. 1, the front case 21 is bent in an "L" shape so as to cover the outer edge of the liquid crystal display panel III. A slit 31 is provided. The slit 31 is fitted to the claw 32 of the rear case 26 as the second support II.

Next, the liquid crystal display panel III is a general liquid crystal display panel as shown in FIG. A glass substrate 22 provided with a thin film transistor for driving liquid crystal and a display electrode connected thereto, a glass substrate 23 provided with a counter electrode opposed thereto and a liquid crystal are sealed between them. Further, the liquid crystal display panel III has a display area 24 for displaying an image or the like in an area excluding the periphery of the liquid crystal display panel III. A flexible substrate (FPC) 25 for supplying a scanning signal or the like to the thin film transistor is connected to the periphery.

Next, as shown in FIG. 9, the second support member II comprises a rear case 26 provided with a window. As shown in the figure, the rear case 26 is bent into an “L” shape in the same manner as the front case 21, and a claw portion 32 is provided on the side surface in the figure of the bent support, and the first support The slit 31 is fitted.

FIG. 10 shows a pressing portion 33 in a circle G area shown in FIG.
2 shows an enlarged perspective view of FIG. As shown in FIG.
It consists of a resin frame with a window,
3 is provided by cutting out a part of the resin frame.
As shown in FIG. 11, the pressing portion 33 of the spacer IV comes into contact with the liquid crystal display panels 22 and 23 to position the liquid crystal display panel, and also reduces the impact applied to the liquid crystal display panel. Further, as described above, the resin film 13 is attached to the inner surface of the front case 21.

[0008]

However, the spacer to be laminated between the liquid crystal display panel and the rear frame is expensive, and it takes a lot of man-hours to assemble the spacer to assemble the liquid crystal display device. There was a drawback that it became up. When the front case and the rear case are fitted together, the rear case comes into contact with the resin film stuck on the inner surface of the front case, and the resin film peels off. There is a drawback in that it adheres to the display surface and becomes a display defect.

Therefore, the present invention has been made in view of the above-mentioned conventional drawbacks, and it is possible to reduce the manufacturing cost, and to reduce the impact on the liquid crystal display device by the support without the spacer. It is another object of the present invention to provide a liquid crystal display device which is capable of removing a resin film stuck on an inner surface thereof.

[0010]

According to the liquid crystal display device of the present invention, a first support having a window, a second support which is fitted with the first support to form a space, and A liquid crystal display device comprising a liquid crystal display panel housed in a space, wherein the first or second support is provided on the first or second support without using a conventional spacer. It is provided with a planar protruding portion formed on the tongue piece having a notched portion and protruding toward the liquid crystal display panel.

Further, one of the first and second supports is provided with a claw protrusion, and the other support is provided with a claw lock at a position corresponding to the claw protrusion.
The claw projection and the claw lock are fitted. Further, the planar protrusion has an L-shape with respect to the side surface of the first or second support.

Further, the claw lock portion protrudes like an eave on the side opposite to the liquid crystal display panel side. Furthermore, an insulating film is stuck on the inner surface of the support having the claw locks protruding like an eaves.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A liquid crystal display device according to the present invention will be described below. FIG. 1 shows an exploded view and an assembled view of the liquid crystal display device. 1A shows a first support, FIG. 1B shows a liquid crystal display panel, FIG. 1C shows a second support, and FIG. 1D shows a liquid crystal display device which has been assembled.

First, the first support I is a liquid crystal display panel.
It comprises a front case 1 provided with a window corresponding to a display area 4 for displaying a III image or the like. An insulating resin film 13 is adhered to the inner surface of the front case 1. FIG. 2 is an enlarged perspective view of the circle A in FIG. As shown in the figure, the front case 1 is bent into an "L" shape so as to cover the outer edge of the liquid crystal display panel III, and the front case 1 is located between the upper surface 1a and the side surface 1b of the front case 1 in the figure. The front case 1 is provided with a notch 8 in which a part thereof is cut out in a U-shape. The width X of this notch 8
Is the width Y of the planar projection 12 provided on the rear case 6 described later.
Keep it wider than By doing so, when a shock is applied to the liquid crystal display panel, the projection 12 pushed out by the liquid crystal display panel does not come into contact with the front case, so that the impact on the projection 12 is sufficiently due to the elastic deformation of the projection. Can be absorbed. Conversely, if the width X of the notch 8 is smaller than the width Y of the planar projection 12 provided on the rear case 6, the projection 12 comes into contact with the front case when the projection 12 is elastically deformed. The impact cannot be reduced.

The slit 7 is for forming a claw lock portion 9, and this claw lock portion 9 is
With the claw protruding portion 10. The material of the front case 1 is a metal such as tinplate, stainless steel or ABS,
Any material may be used, such as resin such as PS or PBT, which can be easily molded to provide the cutouts and the like.

Next, the liquid crystal display panel III is a liquid crystal display panel similar to the conventional one shown in FIG. 9, and as described above, the glass substrate 2 and the glass substrate 3 opposed thereto, and liquid crystal is sealed between them. Have been. In addition, liquid crystal display panel
In III, a display area 4 for displaying an image or the like is in an area excluding the periphery of the liquid crystal display panel III. An FPC 5 that supplies a scanning signal or the like to the thin film transistor is connected to the periphery.

Next, as shown in FIG. 1, the second support II comprises a rear case 6 provided with a window. FIG.
1 shows an enlarged perspective view of the circle B area in FIG. As shown in the figure, the rear case 6 is bent into an “L” shape similarly to the front case 1, and the bent rear case 6 is formed.
A notch 11 is provided in (6a, 6b), and a tongue piece is formed on the side surface 6b of the rear case 6 by the notch 11. That is the protrusion 12.

The protruding portion 12 is firstly cut out by punching the rear case 6 and bent into an "L" shape, and then the tongue portion is pressed in the direction of arrow D (the side where the liquid crystal display panel is stored) to protrude. Let it. Next, it is bent at a position slightly away from the base of the protruding tongue piece by pressing it downward in the drawing. In this way, the tongue piece formed by the notch 11 is formed as a protrusion 12 having an “L” shape with respect to the side surface 6 b of the rear case 6. At this time, the surface 12a of the protruding portion 12 is made flat so as to be in contact with the glass substrate 2 of the liquid crystal display panel III. The width of the tongue piece is Y.

As described above, the positioning of the liquid crystal display panel can be surely performed by the projection formed of the tongue piece without using the spacer, and the elastic deformation of the tongue piece (projection) allows the liquid crystal display panel to be formed. In this case, since the surface of the protruding portion is flat, it can contact the glass substrate with a large area, and the panel can be prevented from being damaged.

An insulating resin film 13 is attached to the inner surface of the rear case 6. Thus, it is possible to prevent the liquid crystal display panel from being damaged by contact with each case due to the impact. Also, in the rear case 6,
A claw protrusion 10 is provided to be fitted with a claw lock 9 provided on the front case 1. This claw protrusion 10
Before the support is bent into an “L” shape, the rear case 6 is pressed by a punch to protrude in a direction opposite to the direction in which the protrusion 12 protrudes. At this time, in order to fit with the claw lock portion 9 of the front case 1, the lower portion of the pressing portion in the drawing is pressed so as to protrude.

FIG. 4 is a sectional view taken along the line EE in FIG. 1D. Glass substrates 2 and 3 of the liquid crystal display panel are housed in a space between the front case 1 and the rear case 6. In the figure, a hatched portion from the upper right to the lower left indicates the front case 1, and a black portion indicates the rear case 6. An insulating resin film 13 is attached to the inner surface of each case 1, 6. Therefore, even if the liquid crystal display panel comes into contact with each case due to an impact, the case is not damaged, and the wiring arranged on the liquid crystal display panel can
There is no short circuit even if it touches.

The glass substrates 2 and 3 are in contact with the protruding portions 12, so that even if an impact is applied to the liquid crystal display panel in the direction of arrow F, the protruding portions 12 are elastically deformed rightward in the drawing to reduce the impact. Can be. <Second Embodiment> A liquid crystal display according to a second embodiment of the present invention will be described below.

The difference from the first embodiment is that the projecting portion 12 provided on the second support is provided with the tongue piece in an "L" shape in the first embodiment. In the second embodiment, a tongue piece is provided with a cylindrical projection. FIG. 5 is an enlarged perspective view of the circle B area in FIG. 1 as viewed from the direction of arrow B, and FIG. 6 is an enlarged perspective view of the circle C area in FIG.

As shown in FIG. 5, the rear case 6 is bent into an “L” shape, and the bent rear case 6 has a cutout 1.
The notch 11 forms a tongue piece on the side surface 6 b of the rear case 6. There protruding part 1
2 are formed. The protruding portion 12 is first fitted to the rear case 6
Is cut out by a punch (a cut-out portion is formed and a tongue piece is formed), and then a part of the tongue piece, for example, approximately the center is protruded by the punch from the direction opposite to the arrow B direction. The surface of the protruding portion is flat and comes into contact with the glass substrate of the liquid crystal display panel as a surface. The shape of the protruding portion 12 is cylindrical in the tongue piece.

The protruding portion on the tongue piece formed by punching has a concave shape when viewed from the direction of arrow C as shown in FIG. As described above, similarly to the first embodiment, the positioning of the liquid crystal display panel can be reliably performed by the projections formed of the tongues without using the spacers, and the tongues (projections) can be formed. By elastic deformation,
The impact applied to the liquid crystal display panel can be reduced. At this time, since the surface of the protruding portion is flat and can contact the glass substrate with a large area, the panel can be prevented from being damaged.

In this embodiment, the case where the shape of the protruding portion is cylindrical is described. However, the shape is not limited to the cylindrical shape, and any shape may be used as long as the surface in contact with the liquid crystal display panel is flat. . <Third Embodiment> Another embodiment of the claw lock will be described.

FIG. 7 is an enlarged perspective view of the claw lock portion in the circle A area in FIG. 1 as viewed from the direction of arrow A. FIG. 8 is a sectional view taken along line EE in FIG. 1D. The difference between the claw lock portion described in the present embodiment and the first embodiment is that the claw lock portion protrudes in the shape of an eave on the side opposite to the liquid crystal display panel side. As shown in FIG. 7, the front case 1 is bent in an "L" shape so as to cover the outer edge of the liquid crystal display panel III on the inner surface, that is, the side where the liquid crystal display panel side is disposed. A slit 7 is formed between the upper surface 1a and the side surface 1b by cutting the front case 1, and a notch 8 is formed on the side surface 1b of the front case 1 by cutting a part of the front case 1 into a U-shape. Have been. The width X of this notch 8
Is the width Y of the planar projection 12 provided on the rear case 6 described later.
Keep it wider than By doing so, when a shock is applied to the liquid crystal display panel, the projection 12 pushed out by the liquid crystal display panel does not come into contact with the front case, so that the impact on the projection 12 is sufficiently due to the elastic deformation of the projection. Can be absorbed. Conversely, if the width X of the notch 8 is smaller than the width Y of the planar protrusion 12 provided on the rear case, the protrusion 12 comes into contact with the front case when the protrusion 12 is elastically deformed. The impact cannot be reduced.

The slit 7 is for forming the claw lock portion 9.
With the claw protruding portion 10. As shown in FIG. 8, glass substrates 2 and 3 of the liquid crystal display panel are accommodated in a space between the front case 1 and the rear case 6. In the figure, a hatched portion from the upper right to the lower left indicates the front case 1, and a black portion indicates the rear case 6.

The glass substrates 2 and 3 are in contact with the protruding portions 12, and even if a shock is applied to the liquid crystal display panel in the direction of arrow F, the protruding portions 12 are elastically deformed rightward in the drawing to reduce the shock. Can be. The claw lock portion 9 is provided so as to protrude outward from the front case 1 in a shape in which the eaves protrude. In order to protrude like an eave, it can be formed by extruding the front case 1 from the inner surface side.

When the front case 1 and the rear case 6 are fitted to each other, the inner surface of the claw lock portion 9 rubs against the outer surface of the claw protrusion 10 provided on the rear case 6, but the claw lock portion 9 has an eave-like shape. And has a slope, so that the resin film 13 adhered to the inner surface of the front case 1
Does not peel off. That is, since the claw projection 10 is inserted along the inclination of the claw lock 9, the resin film 13 of the claw lock 9 does not peel off.

When the front case 1 and the rear case 6 are fitted to each other, the claw lock portion 9 has an eave-like shape. Since the rear case 6 can be easily guided to the front, the workability of fitting is improved. Next, the liquid crystal display panel III is a liquid crystal display panel similar to that shown in FIG. 1, in which the glass substrate 2 and the glass substrate 3 opposed thereto are sealed as described above, and liquid crystal is sealed therebetween. Further, the liquid crystal display panel III has a display area 4 for displaying an image or the like in an area excluding the periphery of the liquid crystal display panel III. In the periphery, an FP that supplies a scanning signal to the thin film transistor
C5 is connected.

The rear case, which is the second support, is
In each of the embodiments, the structure is such that a window is provided. However, the present invention may have a structure without a window in the rear case. That is, as in a so-called reflection type liquid crystal display device, for example, light enters through the window of the first support, passes through the liquid crystal display panel, is reflected by the reflection plate, and emerges again through the liquid crystal display panel, whereby display is performed. In the case of a visible liquid crystal display device, or in the case where a backlight is provided between a liquid crystal display panel and a rear case even in a transmissive liquid crystal display device, the rear case may not have a window.

The projection 12 of the liquid crystal display device of the present invention.
May be in contact with not only the glass substrate 2 but also the glass substrate 3 or may be in contact with both glass substrates. Further, the protrusion 12 may be provided on the first support or on the second support. In the present invention, the material of the front case 1 and the rear case 6 is a metal such as tin, stainless steel, or AB.
It is preferably a resin such as S, PS, PBT, or the like, and is preferably a material that can be easily molded to provide a cutout or the like.

[0034]

According to the liquid crystal display device of the present invention, it is not necessary to use a spacer as in the prior art, so that it is possible to reduce the cost and to eliminate the necessity of assembling the spacer. Can be reduced. In addition, even if there is no spacer, the impact on the liquid crystal display device can be reduced by the support, so that the liquid crystal display panel can be prevented from being damaged.

Further, since the resin film adhered to the inner surface is not peeled off, the peeled resin film does not adhere to the display surface of the liquid crystal display panel, and the occurrence of display defects can be suppressed.

[Brief description of the drawings]

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

FIG. 2 is a partially enlarged perspective view showing a claw lock portion according to the first embodiment of the present invention.

FIG. 3 is a partially enlarged perspective view showing a protrusion and a claw protrusion according to the first embodiment of the present invention.

FIG. 4 is a partial cross-sectional view showing an outer edge portion of the first embodiment of the present invention.

FIG. 5 is a partially enlarged perspective view showing a protruding portion from a direction B according to the second embodiment of the present invention.

FIG. 6 is a partially enlarged perspective view showing a protruding portion from a C direction according to a second embodiment of the present invention.

FIG. 7 is a partially enlarged perspective view showing a claw lock portion according to a third embodiment of the present invention.

FIG. 8 is a partial sectional view showing an outer edge portion according to a third embodiment of the present invention.

FIG. 9 is a perspective view showing a conventional liquid crystal display device.

FIG. 10 is a partially enlarged perspective view illustrating a spacer pressing portion of a conventional liquid crystal display device.

FIG. 11 is a partial cross-sectional view showing an outer edge of a conventional liquid crystal display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front case 2, 3 glass substrate 4 display area 7, 31 slit 8 cutout section 9 claw lock section 10 claw projection section 11 notch section 12 projection section 13 resin film 32 claw section 33 pressing section IV spacer 34 film

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G09F 9/00

Claims (3)

(57) [Claims] 1. A first support having a window, a second support fitted to the first support to form a space, and a liquid crystal display panel housed in the space. A liquid crystal display device, wherein the first or second support is formed as a tongue piece obtained by cutting off a part of the first or second support;
A planar protruding portion that protrudes toward the liquid crystal display panel side is provided, and the planar protruding portion is the first or second planar projection.
Forming an L-shape with respect to the side surface of the second support;
Claw protruding on one of the first and second supports
Part is provided, and the other support is provided with the claw protrusion.
A claw lock is provided at a corresponding position,
The protruding portion and the claw lock portion are fitted, and the claw lock is further provided.
The protruding portion protrudes like an eave on the side opposite to the liquid crystal display panel side.
The liquid crystal display device, characterized in that there. 2. A first support having a window and a first support.
A second support that is fitted to the holding body to form a space;
A liquid crystal display device consisting of a liquid crystal display panel
And any one of the first and second supports
Is provided with a claw projection, and the other support is
At the position corresponding to the nail projection,
A claw lock protruding like an eaves is provided on the opposite side
A liquid crystal display device characterized by the above-mentioned. 3. A claw lock portion protruding like an eaves is provided.
An insulating film is stuck on the inner surface of the support
3. The method according to claim 1, wherein
Liquid crystal display.