JPH11282360A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form cushioning members absorbing excessive force applied to a liquid crystal element simultaneously with manufacturing of a case or a fitting member to prevent increase of cost by providing ushioning members integrated with the case or the fitting member, allowed to abut to the liquid crystal ele ment, and providing vertically movable projecting parts. SOLUTION: A first cushioning member and a second cushioning member 11 integrated with a case 1, allowed to abut to a liquid crystal element 2, and having vertically movable projecting parts D are provided. For assembling this liquid crystal device, a light conductive body 5 and a lamp are received in the fixed position of the case 1, next the liquid crystal display element 2 electrically connected to a printed circuit board through a print film is placed on the projecting parts D of the first cushioning member and the second cushioning member 11, and arranged on the upper part of the light conductive body 15. In this case, the projecting parts D of the second cushioning member are contacted with the coner parts of the liquid crystal display element 2, and the projecting parts D of the first cushioning member are contacted with the side parts positioned between two corner parts of the outer peripheral part of the liquid crystal display element 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a cushioning member provided in a case for arranging a liquid crystal display element, which constitutes the liquid crystal display device.

[0002]

2. Description of the Related Art FIG. 11 is a perspective view of a conventional liquid crystal display, FIG. 12 is an exploded perspective view of the conventional liquid crystal display, and FIG.
FIG. 3 is an explanatory view showing assembly of a conventional liquid crystal display device.
A box-shaped case 21 made of synthetic resin and having an open top is provided with a bottom plate 21a, four side walls 21b provided on the outer periphery of the bottom plate 21a, and a ridge projecting upward from the bottom plate 21a. It is composed of a plurality of support members 21c formed of a plurality of portions and a plurality of concave portions 21d provided at a lower portion of the outer surface of the side wall 21b.

A flat liquid crystal display element 22 in which a liquid crystal material is sealed has a buffer member 23 made of silicon-based elastic rubber attached to an outer peripheral portion of a lower surface thereof with an adhesive. On the outer periphery of the liquid crystal display element 22, a printed circuit board 24 on which electric components are mounted is attached by being electrically connected to a flexible printed film 25 provided with a liquid crystal display element driving IC. ing.

[0004] A flat light guide 26 and an elongated rod-shaped lamp 27 are accommodated in a case 21. Above the light guide 26, a liquid crystal on which a printed board 24 is attached by a print film 25 is provided. The display element 22 is housed.

The mounting member 28 made of a metal plate is
8a, an opening 28b formed in the upper surface plate 28a, a convex pressing portion 28c provided by protruding the upper surface plate 28a near the outer periphery of the opening 28b, and an outer peripheral portion of the upper surface plate 28a formed by bending. Four side plates 28d,
It is composed of a plurality of L-shaped arms 28e extending downward from the side plate 28d. The opening 28b is larger than the effective display area of the liquid crystal display element 22, and the arm 28e is connected to the side plate 28d and extends in the vertical direction, and the arm 28e is extended horizontally in the horizontal direction. The portion 28g forms an L-shape.

As shown in FIG. 11, the mounting member 28 is covered so as to cover the upper part of the case 21, and the printed board 24 and the lamp 27 housed in the case 21 are attached to the upper plate 2.
8a, the horizontal portion 28g of the arm portion 28e of the mounting member 28 is bent inward of the concave portion 21d and fixed to the case 21. Also, the light guide 26
The upper liquid crystal display element 22 is sandwiched between the support member 21c and the holding portion 28c with the buffer member 23 interposed therebetween, and is mounted with the effective display area of the liquid crystal display element 22 exposed from the opening 28b. Thus, a conventional liquid crystal display device is configured.

To assemble the conventional liquid crystal display device, the mounting member 28 is put on the case 21 from above, and the horizontal portion 28g of the arm portion 28e is pushed inward of the concave portion 21d while pressing as shown by the arrow in FIG. 13B. Bend. At this time, even if the mounting member 28 is pressed with excessive force,
Is compressed in the vertical direction to absorb the force, so that the liquid crystal display element 22 can be prevented from being damaged. Also,
Even if an external stress such as an impact or a static load is applied after assembling the conventional liquid crystal display device, the buffer member 23 is similarly contracted in the vertical direction to absorb the external stress, thereby preventing the liquid crystal display element 22 from being damaged. You.

[0008]

However, the material cost of the rubber cushioning member 23 to be attached to the liquid crystal display element 22 is high, and the process of attaching the cushioning member 23 to the liquid crystal display element 22 in the manufacturing process of the liquid crystal display device is required. And the manufacturing cost of the conventional liquid crystal display device has increased.

A printed circuit board 24 in a liquid crystal display device
Due to the heat generated from the above electronic components and the like, and the pressure at the time of being sandwiched between the support member 21c and the pressing portion 28c,
When the conventional liquid crystal display device has been used for a long time, the buffer member 23 is gradually deformed and intrudes into the effective display area of the liquid crystal display element 22 to cause a problem in display.

[0010]

As a first means for solving the above problems, a liquid crystal display device of the present invention comprises a liquid crystal display element, a case for mounting the liquid crystal display element by vertically sandwiching the liquid crystal display element, and a mounting case. And a buffer member having a convex portion which is movable in the vertical direction in contact with the liquid crystal display element, integrally with the case or the mounting member.

As a second solution, in the liquid crystal display device of the present invention, the case has a side wall or the mounting member has a top plate, and the side wall or the top plate has two parallel plates. A bending portion is provided between the slits and capable of bending in a vertical direction, and the first cushioning member includes the bending portion and the convex portion formed on the bending portion.

According to a third aspect of the present invention, there is provided a liquid crystal display device according to the present invention, wherein the side wall or the upper surface plate abuts on the liquid crystal display element lower than the convex portion near the convex portion. A configuration is provided in which possible restricting projections are provided.

According to a fourth aspect of the present invention, in the liquid crystal display device of the present invention, the case has a side wall, or the mounting member has a top plate, and one end is connected to the side wall or the top plate. An arm-shaped bending portion capable of bending in a direction, the second buffer member is formed by the bending portion and the convex portion formed on the bending portion, and is formed in an L-shape; 2
Is configured to abut on a corner of the liquid crystal display element, and the first buffer member is abutted between two corners of the liquid crystal display element.

According to a fifth aspect of the present invention, there is provided a liquid crystal display device according to the present invention, wherein the case has a side wall, or the mounting member has a top plate, and one end is connected to the side wall or the top plate. An arm-shaped bending portion capable of bending in the direction is provided, and the buffer member is formed into an L-shape by including the bending portion and the convex portion formed on the bending portion.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the liquid crystal display device of the present invention will be described. FIG. 1 is a perspective view of a liquid crystal display device according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the liquid crystal display device according to the first embodiment of the present invention,
FIG. 3 is a perspective view of a main part of the liquid crystal display device according to the first embodiment of the present invention. FIGS. 4 and 5 are enlarged explanatory views of the main part of the liquid crystal display device according to the first embodiment of the present invention. 6 is a side view of an essential part of the liquid crystal display device according to the first embodiment of the present invention, FIG. 7 is a sectional view of an essential part along line 7-7 in FIG. 6, and FIG. 6 is a side view of a main part of the liquid crystal display device according to the first embodiment, and FIG.
FIG. 8B is a sectional view of a main part taken along line -8A, and FIG.
FIG. 8B is a sectional view taken along line 8B-8B. Also, FIG.
9A is a cross-sectional view when an external stress is applied to the liquid crystal display device according to the first embodiment of the present invention, FIG. 8A is a cross-sectional view in FIG. 8A, and FIG. 9B is a line 9B-9B in FIG. 9A. FIG.

A box-shaped case 1 made of a heat-resistant synthetic resin and having an open top is provided with a bottom plate 1a and a bottom plate 1a.
a four outer side walls 1b provided on the outer periphery of the outer side wall 1a, and a plurality of claw portions 1c provided on the outer surface of the outer side wall 1b.
A plurality of recesses 1d provided on the outer side wall 1b below the claw portion 1c; a void portion 1e provided on the outer side wall 1b behind the claw portion 1c; and an outer surface of the outer side wall 1b. A plurality of guide protrusions 1f provided and two guide protrusions 1f
And a stopper 1h protruding from the outer surface of the outer side wall 1b. The case 1 is provided so as to protrude above the bottom plate 1a and has a plurality of first side walls 1j provided on an inner side wall 1j having a side wall upper surface plate 1i and an intermediate portion of the inner side wall 1j on the side wall upper surface plate 1i. Cushion member 1k, and a plurality of second cushion members 1 provided at the end of the inner side wall 1j on the side wall upper plate 1i.
l, a regulating protrusion 1m protruding above the side wall upper plate 1i near the side of the first buffer member 1k and the second buffer member 1l, and an upper portion on the side wall upper plate 1i of the inner side wall 1j. And a plurality of positioning bosses 1n protruding therefrom.

A plurality of claws 1c are provided on the outer side surface of the outer side wall 1b, and the height of the outer side wall 1b projecting from the outer side surface gradually increases from the upper part to the lower part of the outer side wall 1b. Is formed. The lower surface of the claw portion 1c is provided so as to be substantially parallel to the bottom plate 1a. As shown in FIG. 7, the concave portion 1d is provided in a thickened portion at the lower portion of the inner side surface connected to the bottom plate 1a of the outer side wall 1b. The gap 1e is provided except for a thick portion on the back side of the outer side wall 1b where the claw 1c is provided. In addition, a plurality of guide protrusions 1f are provided such that the outer side surface of the outer side wall 1b is thick and protrudes from the outer side surface. The guide groove 1g is formed by a gap formed by two surfaces of the two guide protrusions 1f, which are perpendicular to and face the bottom plate 1a. The guide groove 1g is provided on at least two outer side walls 1b opposed to each other. The stopper 1h is connected to the outer side wall 1b.
The lower portion of the outer surface is thick, and a plurality of the lower portions protrude from the outer surface, and the upper surface thereof is substantially parallel to the bottom plate 1a.

As shown in FIG. 3, three inner side walls 1j protrude above the bottom plate 1a and are provided substantially in parallel with the outer side wall 1b to form a U-shape. The inner side wall 1j has a cavity inside and has an inverted U-shaped cross section, as shown in FIGS. Each of these inner side walls 1j has a lower height than the outer side wall 1b, and a side wall upper surface plate 1i forming an upper portion thereof is substantially parallel to the bottom surface plate 1a.

As shown in FIG. 4, the first cushioning member 1k is located between two parallel slits S formed in the intermediate portion of the side wall upper plate 1i of the inner side wall 1j, and the slit S. A bending portion T capable of bending in a vertical direction; and a rod-shaped 2 having a hemispherical tip formed to protrude upward from the bending portion T.
Upper surface plate 1 of inner side wall 1j
i, a plurality of them are provided apart from each other.

As shown in FIG. 5, the second cushioning member 11 has a U-shaped slit S formed at an end of the inner side wall 1j on the side wall upper plate 1i and a slit S inside the slit S. An arm-shaped bending portion T, which is located at one end thereof and is connected to the side wall top plate 1i and is capable of bending vertically, and a side wall top plate 1i of the bending portion T
Is formed to protrude above the free end not connected to the
And one bar-shaped convex portion D having a hemispherical tip.
Since the second buffer member 11 has a cantilevered burr structure, the flexible portion T is more flexible than the first buffer member 1k. These second cushioning members 11 are provided on the inner side wall 1j.
Are provided at each end of the side wall upper surface plate 1i. Further, the first cushioning member 1k and the second cushioning member 1l
Are provided so as to have the same height in the same side wall.

The regulating protrusion 1m is provided on the side wall upper plate 1 near the side of the first buffering member 1k and the second buffering member 11l.
i comprises a rod-shaped projection provided to protrude above the first buffer member 1k and the second buffer member 11
And all are provided at the same height. Further, the positioning boss 1n is provided on the side wall top plate 1i at the intersection and end of each inner side wall 1j, or on the outer side wall 1b at least at a position diagonal to the bottom plate 1a. It has a vertical column shape.
Although two convex portions D are provided on the first buffer member 1k and the second buffer member 1l, one or three or more convex portions D may be provided. In addition, the shape of the convex portion D is not limited to a rod shape, and may be, for example, a plate-shaped protrusion.

A flat liquid crystal display element 2 in which a liquid crystal material is sealed has a printed circuit board 3 on which electric components are mounted on the outer periphery thereof, and a flexible liquid crystal display element driving IC is provided. It is electrically connected by a print film 4 and attached.

A flat light guide 5 and an elongated rod-shaped lamp 6 are accommodated in the case 1. Above the light guide 5, a liquid crystal on which a printed board 3 is attached by a print film 4 is provided. The display element 2 is housed in contact with the projection D provided on the first buffer member 1k and the second buffer member 11. At this time, the convex portion D of the second cushioning member 1l
Is in contact with the corner of the liquid crystal display element 2 and the first buffer member 1
The convex portion D of k comes into contact with a side portion between two corner portions of the outer peripheral portion of the liquid crystal display element 2.

The mounting member 7 made of a metal plate is a top plate 7a.
And an opening 7b formed in the upper surface plate 7a, and an opening 7b
And a plurality of positioning holes 7d formed in the upper surface plate 7a and a plurality of positioning holes 7d formed in the upper surface plate 7a by bending the outer peripheral portion of the upper surface plate 7a. It is composed of one side plate 7e, a plurality of L-shaped arms 7f integrally extending downward from the side plate 7e, and a plurality of guide pieces 7g integrally extending below the side plate 7e.

The opening 7b is larger than the effective display area of the liquid crystal display element 2. In addition, positioning holes 7
As shown in FIGS. 1 and 2, a plurality of ds are provided so as to penetrate the top plate 7a, and are provided at least at diagonal positions of the top plate 7a. The arm portion 7f is formed in an L-shape by a connecting portion 7h connected to the side plate 7e and a locking portion 7i extending long in the horizontal direction. The guide piece 7g is provided so as to extend below at least two opposing side plates 7e, and is formed to be slightly narrower than the width of the guide groove 1g provided in the outer side wall 1b. In this embodiment, the mounting member 7 is described as being made of a metal plate, but a molded product of a synthetic resin may be used.

The mounting member 7 is fitted so that the distal end of the positioning boss 1n is fitted into the positioning hole 7d, covers the upper part of the case 1, and engages with the claw 1c by the locking portion 7i of the arm 7f. Has been stopped. The guide piece 7g is located between the two guide protrusions 1f constituting the guide groove 1g. Further, the lamp 6 and the printed circuit board 3 housed in the case 1 are covered and concealed by the upper surface plate 7a, and the liquid crystal display element 2 above the light guide 5 is provided with the first buffering member 1k and the second buffering member 11l. The liquid crystal display element 2 is mounted in a state where the effective display area of the liquid crystal display element 2 is exposed through the opening 7b. When the attachment member 7 is attached to the case 1, the positioning holes 7
The tip of the positioning boss 1n protrudes from inside d so that it can be visually recognized from the outside. Further, the upper end of the locking portion 7i of the arm 7f and the lower surface of the claw portion 1c are locked by contact.

To assemble the liquid crystal display of the present invention,
First, the light guide 5 and the lamp 6 are placed at predetermined positions in the case 1.
Then, the liquid crystal display element 2 to which the printed board 3 is electrically connected by the print film 4 is placed on the convex portions D of the first buffer member 1k and the second buffer member 11 and It is arranged above the light guide 5. At this time, the convex part D of the second buffer member 11 contacts the corner of the liquid crystal display element 2, and the convex part D of the first buffer member 1 k is connected to the two corner parts of the outer peripheral part of the liquid crystal display element 2. Abuts on one to four sides located between them. Next, the guide piece 7g is inserted using the guide groove 1g as a guide, and the positioning boss 1n is fitted and positioned in the positioning hole 7d, so that the mounting member 7 is covered above the case 1. Next, while guiding the guide piece 7g by the guide groove 1g, the locking portion 7i of the arm portion 7f is brought into contact with the inclined surface of the claw portion 1c until the upper end of the locking portion 7i passes over the lower surface of the claw portion 1c. ,
The mounting member 7 is pressed against the case 1 and press-fitted. On this occasion,
The outer side wall 1b provided with the claw portion 1c is bent in the direction of the gap portion 1e provided on the back side thereof, so that the arm portion 7f is provided.
Press-fitting is performed smoothly. Also, when the mounting member 7 is pressed, the upper surface of the stopper 1h comes into contact with the lower end of the side plate 7e of the mounting member 7 to restrict excessive pressing, and at the same time, the first buffer member 1k and the second buffer member 1l. When the bending portion T having the convex portion D is bent downward, the pressing force is absorbed and an excessive force is prevented from being applied to the liquid crystal display element 2. When the mounting member 7 is pressed excessively, the restricting projection 1m restricts excessive bending of the bending portion T due to pressing of the liquid crystal display element 2 downward. Thus, the assembly of the liquid crystal display device of the present invention is completed.

After the liquid crystal display device is assembled, when an external stress such as an impact or a static load is applied in the vertical direction of the liquid crystal display device as shown by an arrow in FIG.
The bent portion T of the second cushioning member 11 bends, and the convex portion D moves up and down to absorb external stress and prevent an excessive force from being applied to the liquid crystal display element 2. Damage is prevented.

FIG. 10 is a sectional view of a main part of a liquid crystal display device according to a second embodiment of the present invention, FIG. 10A is a sectional view of the liquid crystal display device, and FIG. 10B-10B
It is sectional drawing in a line. In the first embodiment, the first
Although the cushioning member 1k and the second cushioning member 11 are provided in the case 1, it is also possible to provide a similar member on the upper surface plate 7a of the mounting member 7.

That is, the upper plate 7 shown in the first embodiment
The inner side wall 7j having a cavity therein and having an inverted U-shaped cross section is provided at a position where the holding portion 7c is provided on the inner side surface of a, and a side wall upper surface plate 7k forming an upper portion thereof is provided with: First
First cushioning member 71 having the same structure as that of the first embodiment
And a second buffer member 7m. A support member 1p having a rectangular parallelepiped shape is provided inside the case 1 at a position where the first buffer member 1k and the second buffer member 11 are provided. At this time, the projection D of the second buffer member 7m is
, And the convex portion D of the first cushioning member 71 contacts the side portion between the two corner portions of the outer peripheral portion of the liquid crystal display element 2. Then, the liquid crystal display element 2 is sandwiched between the projections D of the buffer members 7l and 7m and the support member 1p. The restricting protrusion 7n is formed of a rod-shaped protrusion provided to protrude above the side wall upper plate 7k near the side of the first buffer member 71 and the second buffer member 7m, and has a height of 1
And the second buffer member 7m are provided at the same height. Other configurations are the same as those of the first embodiment,
The same parts are denoted by the same reference numerals, and description thereof will be omitted.

[0031]

According to the liquid crystal display device of the present invention, a liquid crystal display element, a case and a mounting member for holding the liquid crystal display element by vertically sandwiching the liquid crystal display element are provided, and the liquid crystal display element is integrally formed with the case or the mounting member. By providing a cushioning member having a convex portion that can move in the vertical direction in contact with the liquid crystal display device, when external stress is applied in the vertical direction during or after assembly of the liquid crystal display device, excessive Since the cushioning member that absorbs a strong force to prevent breakage is provided integrally with the case or the mounting member, there is no need to provide a new buffering member, and the buffer can be formed at the same time as the case or the mounting member is manufactured. An increase in the manufacturing cost of the display device can be prevented. Further, the buffer member does not adversely affect the display of the liquid crystal display element even when pressure is applied.

The case has an inner side wall, or the mounting member has an upper surface plate. The side wall upper surface plate or the upper surface plate of the inner side wall is located between two parallel slits and can be flexed in the vertical direction. A flexible portion is provided, and the first cushioning member is configured by a flexible portion and a convex portion formed on the flexible portion.
When an external stress is applied in the vertical direction during or after assembling the liquid crystal display device, excessive force applied to the liquid crystal display element can be absorbed to prevent breakage.

In addition, an excessive external stress is applied to the inner side wall or the upper surface plate by providing a regulating protruding portion, which is lower than the protruding portion and can contact the liquid crystal display element, near the protruding portion. In this case, when the liquid crystal display element is pressed downward, the restricting projection restricts excessive bending of the bent portion, thereby preventing breakage of the bent portion.

The case is provided with an inner side wall, or the mounting member is provided with a top plate, and the side wall upper plate or the upper plate of the inner side wall is vertically connected with one end connected to the inner side wall or the top plate. A flexible arm-shaped flexible portion is provided, and the second cushioning member comprises a flexible portion and a convex portion formed on the flexible portion.
The liquid crystal display device has a cantilevered burr structure in which the second buffer member abuts a corner of the liquid crystal display element and the first buffer member abuts between two corners of the liquid crystal display element. Since the second buffer member has a flexible portion that is more flexible than the first buffer member, the second buffer member softly contacts the easily breakable corner of the liquid crystal display element and can protect the corner of the liquid crystal display element. .

The case has an inner side wall, or the mounting member has an upper surface plate, and the inner side wall has an upper surface plate or an upper surface plate having one end connected to the inner side wall or the upper surface plate in a vertical direction. A flexible arm-shaped flexible portion is provided, and the second cushioning member comprises a flexible portion and a convex portion formed on the flexible portion.
Due to the formation in the shape of a letter, when an external stress is applied in the vertical direction during or after assembling the liquid crystal display device, excessive force applied to the liquid crystal display element can be absorbed to prevent breakage.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a main part of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 4 is an enlarged explanatory view of a main part of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram showing an enlarged main part of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 6 is a side view of a main part of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 7 is a cross-sectional view of a main part along line 7-7 in FIG. 6;

FIG. 8 is a side view of a main part of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 9 is a sectional view when an external stress is applied to the liquid crystal display device according to the first embodiment of the present invention.

FIG. 10 is a sectional view of a main part of a second embodiment of the liquid crystal display device of the present invention.

FIG. 11 is a perspective view of a conventional liquid crystal display device.

FIG. 12 is an exploded perspective view of a conventional liquid crystal display device.

FIG. 13 is an explanatory view showing the assembly of a conventional liquid crystal display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 1a Bottom plate 1b Outer side wall 1c Claw 1d Depression 1e Void 1f Induction protrusion 1g Induction groove 1h Stopper 1i Side wall upper surface plate 1j Inner side wall 1k First buffer member 1l Second buffer member 1m Regulation protrusion 1n Positioning boss 1p Support member 2 Liquid crystal display element 3 Printed circuit board 4 Print film 5 Light guide 6 Lamp 7 Mounting member 7a Top plate 7b Opening 7c Pressing portion 7d Positioning hole 7e Side plate 7f Arm 7g Guide piece 7h Connecting portion 7i Locking portion 7j Inner side wall 7k Side wall upper surface plate 7l First cushioning member 7m Second cushioning member 7n Regulatory protrusion S Slit T Flexure D Convex

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koichi Yamamoto 1-7 Yukitani Otsuka-cho, Ota-ku, Tokyo Alps Electric Co., Ltd.

Claims (5)

[Claims] 1. A liquid crystal display device comprising: a liquid crystal display element; a case for mounting the liquid crystal display element by vertically holding the liquid crystal display element; and a mounting member. A liquid crystal display device provided with a buffer member having a movable projection. 2. The case has a side wall or the mounting member has an upper surface plate, and the side wall or the upper surface plate has a bending portion located between two parallel slits and capable of bending in a vertical direction. 2. The liquid crystal display device according to claim 1, wherein the first buffer member is provided with the bent portion and the convex portion formed on the bent portion. 3. 3. A restricting projection, which is lower than the projection and is capable of abutting on the liquid crystal display element, is provided on the side wall or the upper plate near the projection. 2
3. The liquid crystal display device according to 1. 4. The case has a side wall, or the mounting member has an upper surface plate, and has an arm-shaped bending portion having one end connected to the side wall or the upper surface plate and capable of bending in a vertical direction, The cushioning member is formed in an L-shape by including the bending portion and the protrusion formed in the bending portion, and
4. The cushioning member of claim 1 abuts on a corner of the liquid crystal display element, and the first cushioning member abuts between two corners of the liquid crystal display element. Liquid crystal display device. 5. A cushioning member, wherein the case has a side wall or the mounting member has an upper surface plate, and one end is connected to the side wall or the upper surface plate and has an arm-shaped bending portion which can be bent in a vertical direction. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is formed in an L-shape by comprising the bent portion and the convex portion formed in the bent portion.