JP2005316224A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely fix a panel assembly without using a damper material composed of rubber etc., and without clatters in fixing the panel assembly by housing the panel assembly into an exterior case and fixing the same by twisting of a caulking strip. <P>SOLUTION: The panel assembly including a display panel 10 and a panel holder 20 is housed into the exterior case 30 and in fixing the panel assembly A by means of the caulking strip 33 integrally formed at the exterior case 30, an elastic strip 32 to be pressed by the caulking stripe 32 is formed on a back surface 20a side of the panel holder 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device in which a display panel is accommodated in an outer case through a panel holder, and more specifically to a technique for fixing the panel holder in the outer case.

  To commercialize a liquid crystal display panel as a display device, a control circuit board for driving liquid crystal is connected to the liquid crystal display panel, and a backlight is attached when the liquid crystal display panel is a transflective type or a transmissive type. . In order to assemble them, a panel holder as a support component is used, but is finally stored in the outer case in a state of being attached to the panel holder. One example will be described with reference to FIG.

  FIG. 5 is an exploded perspective view of the liquid crystal display device in an inverted state, and the panel holder 20 is mounted on the back surface side (counter-viewing surface side) of the liquid crystal display panel 10 for commercialization. Normally, the panel holder 20 is made of a synthetic resin molded product formed in a tray shape, and is provided with a panel storage recess 21 in which the liquid crystal display panel 10 is stored as shown in FIG.

  Although not shown, a liquid crystal driving control circuit board connected to the liquid crystal display panel 10 via a flexible substrate such as a COF is attached to the panel holder 20, and the liquid crystal display panel 10 is transflective or transmissive. In this case, the backlight is also incorporated in the panel holder 20.

  The backlight is disposed between the liquid crystal display panel 10 and the panel holder 20, while the control circuit board for driving the liquid crystal is provided with a double-sided adhesive tape or the like on the back surface 20a side (the upper surface side in FIG. 5) of the panel holder 20. It is attached via a fixing means.

  In this manner, the panel assembly A formed by assembling the liquid crystal display panel 10 and its peripheral parts based on the panel holder 20 is housed in the exterior case 30 having the side frames 30a on the four sides. The exterior case 30 here is made of metal and includes a display window 31 for the liquid crystal display panel 10 on the front side thereof, the rear surface on the opposite side is open, and the panel assembly is provided in the exterior case 30 from the rear surface side. The solid A is stored.

  A plurality of caulking pieces 32 for fixing the panel assembly A are integrally formed at the opening edge on the rear surface side of the exterior case 30 (see Patent Document 1). In this example, two caulking pieces 32 are arranged on each of the two long sides, and one of them is shown enlarged in FIG.

  According to this, the caulking piece 32 has a leg portion 321 that stands substantially vertically from the side frame 30a of the outer case 30, and a flange portion 322 that is bent at a substantially right angle in a direction parallel to the side frame 30a on the upper end side of the leg portion 321. And can be freely twisted within a predetermined angle range with the leg portion 321 as the center.

  Therefore, after the panel assembly A is accommodated in the exterior case 30 so that the liquid crystal display panel 10 faces the display window 31, each caulking piece 32 faces the inside of the exterior case 30 as shown by a chain line in FIG. By twisting and pressing the back surface 20 a of the panel holder 20, the panel assembly A is fixed in the exterior case 30.

  However, since the panel holder 20 and the exterior case 30 have dimensional tolerances at the time of manufacture, it is difficult to suppress the backlash of the panel assembly A in the exterior case 30 with only the caulking pieces 32. Therefore, conventionally, a damper material made of rubber or the like is interposed so as to suppress the backlash of the panel holder 20 in the exterior case 30.

  For example, as shown in FIG. 5, a damper material 40 is interposed between the exterior case 30 and the panel assembly A so as to absorb the dimensional tolerance at the time of manufacture. In Patent Document 1, a rubber connector that electrically connects a liquid crystal display panel and a circuit board is used as the damper material. However, these conventional examples have the following problems.

  That is, since the part material and the work cost at the time of assembly increase because the damper material 40 is required, it is not preferable to use the damper material 40. Also, when disposing of the liquid crystal display device itself, it is preferable that the amount of waste is as small as possible from the viewpoint of environmental protection. Has been advocated.

  In order to prevent rattling of the panel assembly A without using the damper material 40, one method is to employ screwing instead of the caulking piece 32, but in the case of screwing. This is not preferable in terms of design because it is necessary to separately prepare a portion for attaching a screw between the panel holder 20 and the outer case 30. Further, the caulking piece 32 can be fixed by a one-touch operation even on the work surface, but it is not preferable in the case of screwing because more work is required.

Japanese Patent Laid-Open No. 10-153764

  Accordingly, an object of the present invention is to provide a damper material made of rubber or the like when housing a panel assembly in an exterior case and fixing the panel assembly with caulking pieces formed integrally with the exterior case. The object is to enable the panel assembly to be securely fixed without play without being used.

  In order to solve the above problems, the present invention provides a panel assembly in which a display panel is housed in a panel holder made of synthetic resin, a display window for the display panel on the front side, and a rear side opened. And a metal outer case in which the panel assembly is housed from the rear surface side, and a substantially L-shape that can be twisted while sliding on the rear surface of the panel holder at the opening edge on the rear surface side of the outer case. In the display device in which the caulking pieces are integrally formed and the panel assembly is fixed in the exterior case by the twisting of the caulking pieces, the back side of the panel holder is elastically deformed by the caulking pieces. The elastic piece which is pushed down while being formed is formed integrally.

  As a preferred aspect of the present invention, the elastic piece extends in a direction substantially orthogonal to the opening edge of the exterior case, and the elastic piece has an increased twist angle of the caulking piece. And the elastic piece extends in a direction substantially parallel to the opening edge of the exterior case, and the elasticity is increased. The piece includes a second mode in which an ascending sliding contact surface that gradually increases in height along the twisting direction of the caulking piece is formed.

  According to the present invention, when a panel assembly including a display panel and a panel holder is housed in an exterior case and the panel assembly is fixed with a caulking piece formed integrally with the exterior case, Since the elastic piece that can be pushed down while being elastically deformed by the caulking piece is integrally formed on the back side, the panel holder can be pressed into the outer case by simply twisting the caulking piece, so that the panel assembly can be securely held without backlash. Can be fixed to.

  Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 4, but the present invention is not limited to this. 1 is a perspective view showing a main part of a display device according to the present invention, FIG. 2 is a perspective view showing a pressed part of the panel holder, FIG. 3 is a cross-sectional view of the main part showing a fixed state of the panel holder, and FIG. It is a perspective view which shows another example of.

  Also in the display device according to an embodiment of the present invention described here, the panel assembly A including the liquid crystal display panel 10 and the panel holder 20 is made of metal as in the conventional example described in FIGS. The panel assembly A is housed in the outer case 30 and the panel assembly A is fixed by twisting the caulking pieces 32 provided in the outer case 30. The liquid crystal display panel 10 and the outer case 30 are the same as those in the conventional example. Since it may be a configuration, its description is omitted. In addition to the liquid crystal display panel, an organic EL display (OELD), a plasma display (PDP), or the like may be used as the display panel in the present invention.

  The present invention is characterized by the configuration of the pressed portion 22 on the panel holder 20 side that is pressed by the caulking piece 32 of the outer case 30. That is, as shown in FIG. 1 and FIG. 2, on the back surface 20 a side of the panel holder 20, the pressed portion 22 pressed by the caulking piece 32 moves downward (panel storage recess 21 side) as the caulking piece 32 twists. An elastic piece 23 that can be tilted elastically toward is formed.

  In this example, the elastic piece 23 is formed in a cut-and-raised tongue shape extending in a direction substantially orthogonal to the opening edge (side frame 30 a) of the outer case 30. That is, in order to be elastically deformable, one side of the elastic piece 23 on the base end 23a side is connected to the edge on the back surface 20a side of the panel holder 20, and an opening 24 is formed in a slit shape around the remaining three sides. The protruding end edge 23 b on the free end side of the elastic piece 23 in the plan view is disposed in the opening 24. Thereby, the elastic piece 23 can be integrally formed with respect to the panel holder 20 with two split molds.

  The elastic piece 23 is formed with a slidable contact surface 25 that can be slidably contacted with the flange 322 by twisting the caulking piece 32. In this case, the slidable contact surface 25 is formed as an inclined surface having an upward slope from the base end portion 23a side of the elastic piece 23 toward the projecting end edge 23b. In this example, the slidable contact surface 25 is a gently curved shape. Ascending slope

  According to this, by twisting the caulking piece 32 toward the inner side of the outer case 30, the flange portion 322 gradually climbs onto the sliding contact surface 25, and the elastic piece 23 is elastically deformed by the pressing force at that time. In order to tilt downward, the panel holder 20 is firmly pressed into the outer case 30 and fixed as shown in FIG.

  As another example, the pressed portion 26 of the aspect shown in FIG. 4 is also included in the present invention. In the case of the pressed portion 26, an elastic piece 27 extending in a direction substantially parallel to the opening edge (side frame 30 a) of the exterior case 30 is formed on the back surface 20 a side of the panel holder 20.

  Similarly to the elastic piece 23, the elastic piece 27 is cut and raised by a slit-like opening 24 cut along three sides excluding the base end portion 27a side, and is formed into a tongue piece shape. In order that the elastic piece 27 can be integrally molded with respect to 20, the protruding end edge 27b is disposed in the opening 24 in plan view.

  Further, the sliding contact surface 28 of the elastic piece 27 with respect to the flange portion 322 is given an upward slope along the twisting direction of the caulking piece 32, that is, from the base end portion 27 a toward the protruding end edge 27 b. Therefore, as in the above example, by twisting the caulking piece 32 toward the inside of the exterior case 30, the collar portion 322 gradually rides on the sliding contact surface 28, and the elastic piece 27 is pushed down by the pressing force at that time, The panel holder 20 is firmly pressed into the outer case 30 and fixed.

  In each of the above examples, the liquid crystal display panel 10 accommodated in the panel holder 20 is indirectly fixed by pressing down the elastic pieces 23 and 27 with the caulking pieces 32 and pressing the panel holder 20 into the outer case 30. However, in some cases, as shown in FIG. 3, the protruding edge 23b (27b) of the elastic piece 23 (27) is caused to act on the back side of the liquid crystal display panel 10, so that the panel holder 20 and the liquid crystal display The panels 10 may be pressed directly into the outer case 30 respectively.

The perspective view which shows an example of the principal part of the display apparatus by this invention. The perspective view which shows the to-be-pressed part by the side of a panel holder. The principal part sectional drawing which shows the fixed state of a panel holder. The perspective view which shows another example of this invention. The disassembled perspective view which shows the prior art example of a display apparatus. The expansion perspective view for demonstrating the crimping fixing method in the said prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display panel 20 Panel holder 21 Panel accommodation recessed part 22, 26 Pressed part 23, 27 Elastic piece 23a, 27a Base end part 23b, 27b Projecting edge 24 Opening 25, 28 Sliding surface 30 Exterior case 30a Side frame 32 Caulking piece 322 Isobe

Claims (3)

A panel assembly in which a display panel is housed in a panel holder made of synthetic resin, and a display window for the display panel on the front side, the rear side being open, and the panel assembly being stowed from the rear side A metal outer case, and an opening edge on the rear surface side of the outer case is integrally formed with a caulking piece that forms a substantially L shape that can be twisted while sliding on the back surface of the panel holder, In the display device in which the panel assembly is fixed in the exterior case by twisting the caulking piece,
An elastic piece that is pushed down while being elastically deformed by the caulking piece is integrally formed on the back side of the panel holder.   The elastic piece extends in a direction substantially orthogonal to the opening edge of the exterior case, and the elastic piece has an upward pressure that gradually increases as the twist angle of the caulking piece increases. The display device according to claim 1, wherein a slidable contact surface having a gradient is formed.   The elastic piece extends in a direction substantially parallel to the opening edge of the exterior case, and the elastic piece has an upward sliding contact surface that gradually increases in height along the twisting direction of the caulking piece. The display device according to claim 1, wherein the display device is formed.

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