WO2017098558A1 - Display device - Google Patents

Abstract

Provided is a display device (100) including a display panel (1) with a surface whereon an image is displayed, and a bezel (2) having a frame portion (21) that covers the edge portions of the surface of the display panel (1) and a side wall portion (22) that surrounds the side surface of the display panel (1), wherein a rectangular interposing member (8) is provided having one end interposed between the frame portion (21) and the edge portions of the display panel (1) and the other end mounted on the bezel (2). With the other end mounted on the bezel (2), the interposing member (8) is restrained by the bezel (2) at the other end, and it is possible to restrict the interposing member (8) from moving toward the active area of the display panel (1).

Description

Display device

The present invention relates to a display device including a display panel on which an image is displayed on one surface, and a bezel having a frame portion covering an edge portion of the display panel and a side wall portion surrounding a side surface of the display panel.

In recent years, display devices equipped with a liquid crystal display panel have been generally used for television receivers, computers, and the like. In addition, such a display device includes a bezel having a frame portion that covers the front side of the peripheral edge portion of the liquid crystal display panel. Further, in such a display device, a so-called cushioning material is disposed between the frame portion and the peripheral portion of the liquid crystal panel.

For example, in Patent Document 1, a friction coefficient is increased and a predetermined surface treatment is performed on a cushioning material disposed between a peripheral portion of a liquid crystal display panel and an inner surface of the frame portion. Thus, a display device in which the cushioning material is difficult to be displaced from its original position is disclosed.

International publication 2011/132473 gazette

On the other hand, there is a possibility that the above-described cushioning material may move to an image display area, so-called active area, due to an external impact or due to thermal expansion of the liquid crystal display panel during a thermal shock test. In this case, there is a problem that the cushioning material hinders image display and is visually recognized by the user to deteriorate the appearance of the display device.

Although the display device according to Patent Document 1 as described above has been devised so that the buffer material is not easily displaced from the original position, it is merely a surface treatment of the buffer material and is not a compulsory measure. Therefore, the above-described problem may still occur.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display panel on which an image is displayed on one surface, a frame portion that covers an edge on one surface of the display panel, and the display panel In a display device comprising a bezel having a side wall portion that surrounds a side surface of the display panel, an interposition member interposed between the frame portion and an edge portion of the display panel can be prevented from moving to the active side of the display panel. To provide an apparatus.

A display device according to an embodiment of the present invention includes a display panel on which an image is displayed on one surface, a frame portion covering an edge portion of the one surface of the display panel, and a bezel having a side wall portion surrounding a side surface of the display panel. The display device includes a rectangular shape, and includes an intermediate member having one end interposed between the frame portion and the edge of the display panel and the other end attached to the bezel. .

In the present invention, in the interposition member, the one end is interposed between the frame portion and the edge of the display panel, and the other end is attached to the bezel. By being restrained to the bezel side via the, the movement of the interposition member to the active area side of the display panel is restricted.

According to the present invention, the intermediate member interposed between the frame portion and the edge of the display panel is attached to the bezel, thereby preventing the intermediate member from moving to the active side of the display panel. It is possible to prevent the interposition member from hindering the image display or the appearance of the product from being deteriorated by the user visually recognizing the interposition member.

1 is a front view illustrating an appearance of a liquid crystal television receiver in a first embodiment. FIG. 2 is an exploded perspective view schematically showing main parts constituting the liquid crystal television receiver in the first embodiment. It is sectional drawing by the AA line of FIG. It is the enlarged view to which the part enclosed by the circle in FIG. 3 was expanded. FIG. 5 is an explanatory diagram for explaining the movement of the interposition member in the liquid crystal television receiver in the first embodiment. FIG. 6 is a partial cross-sectional view schematically showing a main part constituting the liquid crystal television receiver in the second embodiment. FIG. 10 is a cross-sectional view schematically showing a main part constituting an interposing member of a liquid crystal television receiver in a third embodiment.

Hereinafter, a case where the display device according to the embodiment of the present invention is applied to a so-called liquid crystal television receiver including a liquid crystal panel will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a front view showing an appearance of a liquid crystal television receiver 100 according to the first embodiment. In the liquid crystal television receiver 100, the liquid crystal display panel 1 and other components are accommodated in a bezel 2 and a backlight chassis 6 described later.

2 is an exploded perspective view schematically showing a main part constituting the liquid crystal television receiver 100 according to Embodiment 1, and FIG. 3 is a cross-sectional view taken along line AA in FIG. [FIG. 4] is an enlarged view in which a portion surrounded by a circle in FIG. 3 is enlarged.

As shown in FIG. 1, the liquid crystal television receiver 100 according to the present embodiment includes a rectangular liquid crystal display panel 1 on the front side, and the liquid crystal display panel 1 displays an image on one surface of the front side. Further, on the back side of the liquid crystal display panel 1, an optical sheet 3, a holding frame member 4, a light source device 5, and a backlight chassis 6 are provided in this order. The light source device 5 includes a light source 51, a light guide plate 52, and a reflection sheet 53. In the following, for convenience of explanation, the direction along the longitudinal direction of the liquid crystal display panel 1 is also referred to as the left-right direction, and the direction along the thickness direction of the liquid crystal display panel 1 is also referred to as the front-back direction.

The light source device 5 is housed in a backlight chassis 6 having a rectangular parallelepiped box shape with one side open, and the peripheral side of the optical sheet 3 and the side wall side of the backlight chassis 6 are formed by a rectangular frame-shaped bezel 2. Surrounded.

The optical sheet 3 is disposed so that one surface thereof faces the other surface of the liquid crystal display panel 1, the light guide plate 52 is disposed so that one surface faces the other surface of the optical sheet 3, and the reflection sheet 53 is further formed. One surface is arranged to face the other surface of the light guide plate 52.

The bezel 2 is a rectangular frame. The bezel 2 includes a rectangular cylindrical side wall portion 22 that faces and surrounds the side wall of the backlight chassis 6, and an annular plate frame portion 21 that projects inward from one end portion of the side wall portion 22. The bezel 2 is L-shaped in cross section in the thickness direction of the liquid crystal television receiver 100.

The frame portion 21 of the bezel 2 is disposed on the front side from the liquid crystal display panel 1. In other words, the liquid crystal display panel 1 is covered by the frame portion 21 of the bezel 2 with the peripheral portion of the one surface sandwiching the interposition member 8 described later. The user can visually recognize an image displayed on the one surface of the liquid crystal display panel 1 through the frame unit 21.

The inside of the frame part 21 and the side wall part 22 is connected by an inclined connecting part 23. The inclined connecting portion 23 is inclined with respect to both the inner side surface of the frame portion 21 and the inner side surface of the side wall portion 22, and connects the inner side surface of the frame portion 21 and the inner side surface of the side wall portion 22. For example, the inclined connecting portion 23 is provided along the outer edge of the frame portion 21.

The liquid crystal display panel 1 has a rectangular flat plate shape. The liquid crystal display panel 1 employs an active matrix method. Further, the liquid crystal display panel 1 is provided with a polarizing plate (not shown) on the other surface, and using this polarizing plate, incident light is converted into P wave (horizontal polarization component) and S wave (vertical polarization component). And only the P wave goes out toward the one surface, and the S wave is absorbed by the polarizing plate. The liquid crystal display panel 1 may be an electrophoretic liquid crystal panel, for example.

Between the frame part 21 and the liquid crystal display panel 1, an interposition member 8 is interposed. More specifically, one end of the interposition member 8 is interposed between the frame portion 21 and the edge of the display panel 1, and the other end is in surface contact with the inclined connection portion 23. Moreover, the interposition member 8 has the sticking part 81 in the location which concerns on a surface contact with the inclination connection part 23, and the interposition member 8 is sticking with the inclination connection part 23 via the sticking part 81, Surface contact with the inclined connecting portion 23 is maintained, and movement (particularly movement toward the active area) is restricted. For example, the sticking part 81 is stuck to the inclined connecting part 23 using a double-sided tape.

The interposition member 8 is provided along each edge (or inclined connecting portion 23) of the frame portion 21, and one end portion thereof is interposed between the frame portion 21 and the liquid crystal display panel 1. This prevents the display panel 1 from directly hitting. Accordingly, when an impact is applied from the outside of the liquid crystal television receiver 100, the bezel 2 (frame portion 21) collides with the liquid crystal display panel 1 due to the interposition member 8 absorbing the impact, and the liquid crystal display panel 1 Is prevented from being damaged or scratched on the liquid crystal display panel 1.

Further, the interposition member 8 has a strip shape, the dimension in the longitudinal direction is substantially equal to the dimension of each edge of the frame part 21, and the dimension in the width direction is larger than the dimension between the inner edge and the outer edge of the frame part 21. small. For example, the interposition member 8 is made of an impact absorbing material such as rubber.

The liquid crystal television receiver 100 according to the first embodiment is not limited to this, and the interposed member 8 may have a hollow rectangular shape that follows the frame portion 21. In addition, the present invention is not limited to this, and the interposed member 8 is composed of a plurality of small portions, and a plurality of interposed members 8 are arranged in parallel along each edge of the frame portion 21 with a predetermined interval therebetween. May be.

The optical sheet 3 provided on the other surface side of the liquid crystal display panel 1 diffuses and collects light emitted from the light source 51 and incident through the light guide plate 52, thereby providing more uniform light. This is a known device that emits light toward the liquid crystal display panel 1. For example, the optical sheet 3 includes three unit sheets 31, 32, and 33 that are overlapped. More specifically, the optical sheet 3 includes two diffusion sheets 31 and 33 and one prism sheet 32, and the prism sheet 32 is interposed between the two diffusion sheets 31 and 33. The diffusion sheet 31, the prism sheet 32, and the diffusion sheet 33 are the same rectangle and have the same size.

Of the two diffusion sheets 31 and 33, the diffusion sheet 31 disposed on the light guide plate 52 side is an optical sheet that diffuses light incident from the light source 51 via the light guide plate 52 and causes the light to enter the prism sheet 32. . The prism sheet 32 is an optical sheet that collects light incident via the diffusion sheet 31 and emits the light toward the diffusion sheet 33. The light that has passed through the prism sheet 32 is incident on the diffusion sheet 33 perpendicular to the prism sheet 32.

The diffusion sheet 33 disposed on the liquid crystal display panel 1 side further diffuses the light incident through the prism sheet 32 to have a more uniform luminance distribution and output the light toward the other surface of the liquid crystal display panel 1. It is a sheet. In the following, for convenience of explanation, the diffusion sheets 31 and 33 and the prism sheet 32 are collectively referred to as an optical sheet 3.

The holding frame member 4 is a hollow rectangular frame surrounding the side surfaces of the liquid crystal display panel 1 and the optical sheet 3. The holding frame member 4 is provided with a facing wall 41 facing the side surfaces of the liquid crystal display panel 1 and the optical sheet 3, and a protruding portion that protrudes from the facing wall 41 toward the liquid crystal display panel 1 or the optical sheet 3 and has a step at the tip. 42. In the liquid crystal display panel 1, the peripheral edge of the other surface is supported by a step of the protruding portion 42, and in the optical sheet 3, the peripheral edge of the other surface is supported by the step of the protruding portion 42.

A rectangular light guide plate 52 is disposed on the other surface side of the optical sheet 3. That is, the one surface of the light guide plate 52 is disposed to face the other surface of the optical sheet 3. The light guide plate 52 is emitted from the light source 51, diffuses light incident from one side surface thereof, and emits the light toward the optical sheet 3 from the one surface.

The light guide plate 52 is made of, for example, a transparent plate material (glass, acrylic resin, polycarbonate resin, or the like). When a point light source such as an LED is used as the light source, the light guide plate 52 diffuses the light from each point light source and uniformly emits the light from the one surface as surface light emission.

The reflection sheet 53 is, for example, a rectangle, and is disposed so that one surface thereof faces the other surface of the light guide plate 52, and returns light emitted from the other surface of the light guide plate 52 to the light guide plate 52.

Further, a light source 51 is provided on the one side surface of the light guide plate 52. The light source 51 includes, for example, a plurality of light emitting diodes (LEDs) 55 mounted on the substrate 54.

In the liquid crystal television receiver 100 according to Embodiment 1 having such a configuration, the interposition member 8 is guided in the active area direction where image display is performed on the liquid crystal display panel 1 by guiding and restricting the movement of the interposition member 8. Can be prevented from moving. This will be described in detail below.

FIG. 5 is an explanatory diagram for explaining the movement of the interposition member 8 in the liquid crystal television receiver 100 according to the first embodiment.

When the liquid crystal television receiver 100 is in operation, the light source device 5 generates heat, so that the holding frame member 4 and the liquid crystal display panel 1 are expanded by the heat. In particular, in the liquid crystal display panel 1, expansion occurs mainly in the direction along the surface starting from the thickness direction (see the white arrow in FIG. 5). In other words, during operation of the liquid crystal television receiver 100, the liquid crystal display panel 1 presses the interposition member 8 along the direction of the white arrow.

In this case, the interposition member 8 is pressed against the liquid crystal display panel 1 and moved along the direction of the thick arrow in FIG. That is, the force due to the thermal expansion of the liquid crystal display panel 1 is greater than the adhesion force between the interposition member 8 and the inclined connecting portion 23. Therefore, the interposition member 8 is released from the restraint due to the sticking force, moves away from the inclined connecting portion 23, and moves in the direction of the thick arrow in FIG. At this time, as described above, since the inclined connecting portion 23 is inclined, the interposed member 8 moves in the direction of the thick arrow in FIG. 5 while being guided by the inclined connecting portion 23.

In the general case where the inclined connecting part 23 is not provided and the frame part 21 and the side wall part 22 form a right angle, the movement of the interposing member 8 is prevented by the side wall part 22 during the thermal expansion of the liquid crystal display panel 1. Although 8 cannot move, only the liquid crystal display panel 1 is thermally expanded, so that it is possible to prevent the interposition member 8 from relatively moving to the active area side of the liquid crystal display panel 1.

On the other hand, when the liquid crystal display panel 1 shrinks, the shrinkage occurs mainly in the direction along the surface, starting with the thickness direction. Therefore, the liquid crystal display panel 1 pulls the interposition member 8 in the direction opposite to the direction of the white arrow in FIG. At this time, the interposition member 8 is pulled by the liquid crystal display panel 1 in the direction of the thin arrow in FIG.

However, at the time of such shrinkage, the liquid crystal display panel 1 also shrinks in the thickness direction, and as described above, the friction coefficient on the surface of the interposition member 8 is low. The force is smaller than the adhesion force between the interposed member 8 and the inclined connecting portion 23. Therefore, the interposition member 8 is kept restrained by the sticking force and does not move in the direction of the thin arrow in FIG. 5, but is visually recognized by the user when the interposition member 8 moves to the active area side of the liquid crystal display panel 1. Or it can prevent obstructing the image display.

(Embodiment 2)
As in the first embodiment, the liquid crystal television receiver 100 according to the present embodiment includes the liquid crystal display panel 1, the bezel 2, the optical sheet 3, the holding frame member 4, the light source device 5, and the backlight chassis. 6, but the structure of the frame portion 21 of the bezel 2 is different. This will be described in detail below.

FIG. 6 is a partial cross-sectional view schematically showing the main part of the liquid crystal television receiver 100 according to the second embodiment. In the liquid crystal television receiver 100 according to the present embodiment, the protruding portion 9 protrudes from the inner surface of the frame portion 21 toward the one surface of the liquid crystal display panel 1. The protruding portion 9 is provided in the vicinity of one end of the interposed member 8, and is provided on the center side of the liquid crystal display panel 1 from the one end of the interposed member 8. The protruding portion 9 is provided along the one end of the intermediate member 8 over the entire range of the one end.

Since the liquid crystal television receiver 100 according to the present embodiment has such a configuration, the interposed member 8 moves to the active area side of the liquid crystal display panel 1 and is visually recognized by the user, or for image display. It can prevent more reliably that it becomes obstructive.

That is, when the liquid crystal display panel 1 is contracted, the interposition member 8 is pulled by the liquid crystal display panel 1 in the direction of the thin arrow in FIG. 6, but as described above, the pulling force due to the contraction of the liquid crystal display panel 1 is Further, the interposition member 8 does not move in the direction of the thin arrow in FIG. However, even if the intervening member 8 moves in the direction of the thin arrow in FIG. 6, that is, in the active area direction of the liquid crystal display panel 1 for some reason, the movement of the intervening member 8 is blocked by the protrusion 9. Therefore, it is possible to prevent the interposition member 8 from being visually recognized by the user by moving to the active area side of the liquid crystal display panel 1 or hindering image display.

In the above description, the case where the protruding portion 9 is provided along the one end of the interposition member 8 over the entire range has been described as an example. However, the liquid crystal television receiver 100 according to the present embodiment is not limited to this. For example, the structure by which the some protrusion part 9 was arranged in parallel in the direction in alignment with this one end in the several places of the vicinity of the said one end of the interposition member 8 may be sufficient.

About the same part as Embodiment 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

(Embodiment 3)
As in the first embodiment, the liquid crystal television receiver 100 according to the present embodiment includes the liquid crystal display panel 1, the bezel 2, the optical sheet 3, the holding frame member 4, the light source device 5, and the backlight chassis. 6, but the configuration of the interposition member 8 is different. This will be described in detail below.

FIG. 7 is a cross-sectional view schematically showing a main part constituting the interposing member 8 of the liquid crystal television receiver 100 according to the third embodiment. The interposition member 8 of the liquid crystal television receiver 100 according to the present embodiment has an impact absorbing portion 82. The shock absorbing portion 82 prevents the bezel 2 (frame portion 21) from colliding with the liquid crystal display panel 1.

In the shock absorbing portion 82, a PET portion 84 is attached to an opposite surface facing one surface of the liquid crystal display panel 1 through an adhesive portion 83. That is, the interposition member 8 has the PET portion 84 on the outermost side at least on the opposite surface side of the shock absorbing portion 82, reduces friction in contact with the liquid crystal display panel 1, and the surface of the shock absorbing portion 82. Protect. Other configurations of the interposition member 8 are the same as those in the first embodiment, and a detailed description thereof will be omitted.

Therefore, in the liquid crystal television receiver 100 according to the present embodiment, even when a force in the active area direction from the liquid crystal display panel 1 acts on the interposition member 8 due to the contraction of the liquid crystal display panel 1, the interposition member 8. Is restricted from moving to the active area side of the liquid crystal display panel 1, and the intervening member 8 can be prevented from being visually recognized by the user or hindering image display.

About the same part as Embodiment 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 2 Bezel 4 Protrusion part 8 Interposition member 21 Frame part 22 Side wall part 23 Inclined connection part 81 Adhering part 100 Liquid crystal television receiver

Claims (5)

In a display device comprising: a display panel on which an image is displayed; and a bezel having a frame portion covering an edge portion of the display panel and a side wall portion surrounding a side surface of the display panel.
A display device, wherein the display device has a rectangular shape, and has one end portion interposed between the frame portion and an edge portion of the display panel and the other end portion attached to the bezel. Inclined with respect to the inner side surface of the frame part and the inner side surface of the side wall part, comprising an inclined connection part that connects the inner side surface of the frame part and the inner side surface of the side wall part
The display device according to claim 1, wherein the other end portion of the interposition member is in surface contact with the inclined connection portion. 3. The display device according to claim 2, wherein the interposition member has a sticking portion at a surface contact portion with the inclined connecting portion. 4. The display device according to claim 1, wherein the interposition member has a PET portion that comes into contact with the display panel. The display device according to any one of claims 1 to 3, further comprising a protruding portion that protrudes from an inner surface of the frame portion and restricts movement of the interposition member.

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