JP7241301B2 - image display device - Google Patents

Description

The present disclosure relates to an image display device that includes a display panel that displays images.

Patent Document 1 discloses a display device including a light source, a display panel including a display surface on the front side, a light source supporting member that supports the light source and has thermal conductivity, and a drive component that supplies a drive signal to the display panel. do. in this display device. The drive component is fixed to the light source support member using an insulating adhesive. As the adhesive, for example, a double-sided adhesive tape-shaped insulating adhesive is used.

JP 2013-195510 A

The present disclosure provides an image display device that can be manufactured efficiently.

The image display device according to the present disclosure includes a display panel that displays an image on the front side, a heat diffusion plate that is arranged on the back side of the display panel, and a magnetic force that attracts the display panel to the heat diffusion plate side, and a magnetic member for bringing the rear surface of the display panel into contact with the heat diffusion plate.

According to the image display device according to the present disclosure, it is possible to efficiently dissipate heat from the display panel.

1 is an external perspective view of an image display device according to an embodiment; FIG. 1 is an exploded perspective view of an image display device according to an embodiment; FIG. FIG. 4 is a partial perspective view showing a magnet accommodating portion included in the heat diffusion plate according to the embodiment; FIG. 4 is a partial cross-sectional view showing a magnet accommodating portion included in the heat diffusion plate according to the embodiment; FIG. 4 is a partial cross-sectional view showing a connection portion between the peripheral portion of the heat diffusion plate and the display panel according to the embodiment; It is a figure which shows the 1st example of the layout of the magnetic member which concerns on the modification of embodiment. It is a figure which shows the 2nd example of the layout of the magnetic member which concerns on the modification of embodiment.

The inventors of the present application have found that the conventional image display device has the following problems. 2. Description of the Related Art Conventionally, for example, there are television receivers equipped with a display panel (organic EL panel) using organic light-emitting diode (OLED) elements.

The organic EL panel is a self-luminous display panel and does not require a backlight unit like a liquid crystal panel. Therefore, a display panel module including an organic EL panel can be made thinner than a display panel module including a liquid crystal panel. However, the organic EL panel generates heat when it emits light, and this heat causes deterioration (temperature deterioration) of the OLED elements. Therefore, there is a demand for a structure that efficiently releases the heat of the organic EL panel to the outside.

Therefore, it is conceivable to place a thermal diffusion plate made of a highly thermally conductive material such as metal along the back surface of the organic EL panel. As a result, the organic EL panel can efficiently dissipate heat through the heat diffusion plate. In this structure, it is important to thermally connect the organic EL panel and the heat diffusion plate over as wide a range as possible in order to improve heat radiation efficiency. Therefore, for example, the entire or part of the back surface of the organic EL panel is adhered to the heat diffusion plate. Since an adhesive tape is used for this adhesion, for example, there is no need to wait for the adhesive to dry, and problems such as the protrusion of the adhesive do not occur. However, since an adhesive tape having an adhesive on both sides of a resin substrate is interposed between the organic EL panel and the heat diffusion plate, the organic EL panel and the heat diffusion plate are brought into direct contact with each other. Compared to the case, the thermal conductivity from the organic EL panel to the heat diffusion plate is lowered.

Of course, even if an adhesive tape is used to bond the organic EL panel and the heat diffusion plate, the heat diffusion plate and the organic EL panel can be heated by bonding the entire back surface of the organic EL panel and the heat diffusion plate with the adhesive tape. It is possible to reduce the air layer between the diffusion plate as much as possible. However, in this case, once the organic EL panel and the heat diffusion plate are adhered, it becomes extremely difficult to separate the organic EL panel and the heat diffusion plate without damaging each other. Therefore, re-bonding the organic EL panel and the heat diffusion plate (reattaching the adhesive tape), separating one of the bonded organic EL panel and the heat diffusion plate and using it as a part of other products, etc. is practically impossible. This poses a problem from the viewpoint of improving the manufacturing efficiency of the image display device or suppressing the manufacturing cost.

The present disclosure has been made based on such findings, and as a result of diligent studies by the inventors of the present application, an idea has been obtained for an image display device capable of efficiently dissipating heat from the display panel.

Hereinafter, embodiments will be described with appropriate reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art.

It is noted that the present inventors provide the accompanying drawings and the following description for the full understanding of the present disclosure by those skilled in the art, which are intended to limit the claimed subject matter. isn't it.

In addition, in the following embodiments and modifications, for convenience of explanation, the vertical direction is aligned with the Z-axis direction, the front-rear direction is aligned with the Y-axis direction, and the horizontal direction is aligned with the X-axis direction. The association does not limit the posture during manufacture or use of the image display device according to the present disclosure. Further, in the following description, for example, the X-axis plus side indicates the arrow direction side of the X-axis, and the X-axis minus side indicates the side opposite to the X-axis plus side. The same applies to the Y-axis direction and the Z-axis direction. Each figure is a schematic diagram and is not necessarily strictly illustrated. Therefore, the scales and the like are not always the same in each drawing.

(Embodiment)
[1. Overview of configuration of image display device]
First, an overview of the configuration of an image display device 10 according to an embodiment will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is an external perspective view of an image display device 10 according to an embodiment. FIG. 2 is an exploded perspective view of the image display device 10 according to the embodiment. Specifically, FIG. 2 is an exploded perspective view when the image display device 10 is viewed obliquely from behind.

The image display device 10 according to the present embodiment is a display panel module that includes a display panel 20, and is a device that is incorporated in, for example, a television receiver, a monitor display, and other devices as a device for displaying images. .

Specifically, as shown in FIGS. 1 and 2, the image display device 10 includes a display panel 20 that displays an image, a heat diffusion plate 50 that is arranged along the back surface of the display panel 20, and the display panel 20. and a back cover 40 covering the heat diffusion plate 50 from the rear side.

In the present embodiment, the display panel 20 is a self-luminous display panel, specifically an organic EL panel. That is, the image display device 10 is a display panel module (OLED module) including an organic EL panel. The display panel 20, which is an organic EL panel, includes an EL substrate, a glass substrate (CF substrate) on which color filters are formed, a resin layer between the EL substrate and the CF substrate, a heat dissipation sheet, and the like. However, detailed illustration and description of these elements are omitted.

The image display device 10 also includes electronic components and electronic circuits necessary for image display on the display panel 20, such as a source substrate for driving image display on the display panel 20 and a timing controller for controlling the source substrate. Illustrations and descriptions of these electronic components and the like are omitted. Note that the timing controller and the source board are fixed to the back surface of the back cover 40, for example.

The back cover 40 is a cover on the back side of the image display device 10 as a display panel module, and is a member produced by subjecting a metal member (metal plate) made of aluminum or iron, for example, to press working or the like. In the present embodiment, the back cover 40 is sized such that its lower portion is exposed below the display panel 20 . A lower cabinet 90 (see FIG. 1) is arranged in front of the portion of the back cover 40 exposed below the display panel 20 . In other words, the lower cabinet 90 is arranged directly below the display panel 20 and fixed to the heat diffusion plate 50 with, for example, a plurality of screws.

In addition, the back cover 40 may be designed. For example, the back cover 40 may be painted, or a resin or metal thin film adhesive sheet or plate may be attached to the back cover 40 . If the back cover 40 is painted black, heat can be more efficiently released to the outside by radiation.

The heat diffusion plate 50 is a plate-shaped member arranged on the back side of the display panel 20 . That is, in this embodiment, the heat diffusion plate 50 is arranged between the display panel 20 and the back cover 40 . The thermal diffusion plate 50 is a member manufactured by subjecting a metal material to press working or the like. The heat diffusion plate 50 is fixed to the back cover 40 with, for example, a plurality of screws.

In the present embodiment, the heat diffusion plate 50 is sized to cover almost the entire back surface of the display panel 20 and is arranged in direct surface contact. Specifically, a plurality of magnets 60 are fixed to the rear side of the heat diffusion plate 50 , and the magnetic force of the plurality of magnets 60 attracts the display panel 20 to the front side of the heat diffusion plate 50 . In addition, the image display device 10 further includes an adhesive member 70 that bonds the periphery of the heat diffusion plate 50 and the display panel 20, and misalignment (parallel to the XZ plane) between the display panel 20 and the heat diffusion plate 50 misalignment) is suppressed. The heat diffusion plate 50 will be described later with reference to FIGS. 3 to 5. FIG.

A frame 30 is arranged on the display panel 20, the heat diffusion plate 50, and the back cover 40, which are stacked in the Y-axis direction, so as to surround the upper end surface and the left and right end surfaces thereof. The frame 30 protects at least the upper end surface and the left and right end surfaces of the display panel 20, the heat diffusion plate 50, and the back cover 40. As shown in FIG.

[2. Structure of heat diffusion plate]
Next, the structure of the thermal diffusion plate 50 in the image display device 10 will be described with reference to FIGS. 3 to 5. FIG. FIG. 3 is a partial perspective view showing the magnet accommodating portion 53 included in the heat diffusion plate 50 according to the embodiment. FIG. 3 shows an enlarged view of a portion corresponding to a region III surrounded by a dotted line in FIG. FIG. 4 is a partial cross-sectional view showing the magnet accommodating portion 53 included in the heat diffusion plate 50 according to the embodiment. FIG. 4 shows a partial cross section of the image display device 10 on the YZ plane passing through line IV-IV of FIG. FIG. 5 is a partial cross-sectional view showing a connecting portion between the peripheral portion 50a of the heat diffusion plate 50 and the display panel 20 according to the embodiment. FIG. 5 shows a partial cross section of the heat diffusion plate 50 and the display panel 20 on the XY plane passing through line VV of FIG.

As shown in FIG. 3, a magnet 60 is arranged on the rear side of the heat diffusion plate 50 . Specifically, the heat diffusion plate 50 has a magnet accommodation portion 53 formed in a concave shape on the back surface, and at least a portion of the magnet 60 is accommodated in the magnet accommodation portion 53 . In this embodiment, as shown in FIG. 4, the entire magnet 60 is housed in the magnet housing portion 53. As shown in FIG. In the present embodiment, the magnet 60 and the bottom surface of the magnet containing portion 53 (the surface on the Y-axis negative side) are adhered with an adhesive sheet 61 having double-sided adhesiveness.

In the present embodiment, a plurality of magnets 60 fixed to the heat diffusion plate 50 in the manner described above are dispersedly arranged on the back side of the heat diffusion plate 50 . For example, as shown in FIG. 1 , the magnet housing portions 53 are provided at 15 locations on the back surface of the heat diffusion plate 50 , that is, 15 magnets 60 are attached to the heat diffusion plate 50 . Although the type of magnet 60 is not particularly limited, for example, a permanent magnet such as a ferrite magnet or a neodymium magnet is used.

A metal heat dissipation sheet is arranged on the back side of the display panel 20 (on the side of the heat diffusion plate 50) to increase heat dissipation efficiency. The display panel 20 is attracted to the heat diffusion plate 50 side by attracting the heat dissipation sheet to each of the plurality of magnets 60 . For example, if the heat diffusion plate 50 is made of a ferromagnetic material such as iron or an alloy containing a ferromagnetic material, the heat diffusion plate 50 is magnetized by a magnet 60 arranged on the back side, thereby displacing the display panel 20 on the front side. It is attracted to the side of the heat spreader 50 . Further, when the heat diffusion plate 50 is made of a non-ferromagnetic material such as aluminum or copper, the magnetic force of the magnets 60 arranged on the back side penetrates the heat diffusion plate 50, The side display panel 20 is attracted to the heat diffusion plate 50 side. Since the front surface of the heat diffusion plate 50 is formed flat, a wide area of the rear surface of the display panel 20 attracted by the magnetic force of the distributed magnets 60 is in surface contact with the front surface of the heat diffusion plate 50. do.

In addition, the peripheral edge portion 50a of the heat diffusion plate 50 that attracts the display panel 20 using magnetic force is adhered to the display panel 20 via the adhesive member 70 as described above. Specifically, as shown in FIG. 5 , a stepped portion 51 that accommodates the adhesive member 70 is formed on the peripheral edge portion 50 a of the heat diffusion plate 50 . As the adhesive member 70, for example, an adhesive tape in which an adhesive is placed on both sides of a base material made of resin is adopted.

[3. effects, etc.]
As described above, the image display device 10 according to the present embodiment includes the display panel 20 that displays an image on the front surface, the heat diffusion plate 50 arranged on the back side of the display panel 20, and the magnet 60. . The magnet 60 attracts the display panel 20 to the heat diffusion plate 50 side by magnetic force, thereby bringing the rear surface of the display panel 20 into contact with the heat diffusion plate 50 .

That is, in the present embodiment, since magnetic force is used to connect the display panel 20 and the heat diffusion plate 50, one of the heat diffusion plate 50 and the display panel 20 is directly connected to the other without an adhesive tape or the like. It is possible to make contact (surface contact) in a relatively wide range. As a result, heat is efficiently conducted from the display panel 20 to the heat diffusion plate 50, and as a result, heat is efficiently dissipated from the display panel 20, and effects such as improvement in luminance efficiency and suppression of temperature deterioration are exhibited. Thus, the image display device 10 according to the present embodiment can efficiently dissipate heat from the display panel.

In addition, since the heat diffusion plate 50 having the above effects is magnetically joined (magnetically attached) to the display panel 20, unlike the case where an adhesive member such as an adhesive tape is used, separation and separation after joining with the display panel 20 are possible. Position adjustment is possible. Therefore, it is possible to redo the overlapping of the display panel 20 and the heat diffusion plate 50 . Further, for example, it is possible to separate the display panel 20 from the finished product or the semi-finished product of the image display device 10 and use it as a part of another product. These effects are advantageous for improving manufacturing efficiency or reducing manufacturing costs for the image display device 10 capable of maintaining or improving image quality by efficiently dissipating heat from the display panel 20 .

Moreover, in the present embodiment, the magnet 60 is arranged on the back side of the heat diffusion plate 50 .

With this configuration, the front surface of the heat diffusion plate 50 can be formed into a flat shape. As a result, the surface contact area between the heat diffusion plate 50 and the display panel 20 is increased compared to the case where the front surface of the heat diffusion plate 50 has unevenness. In addition, since the unevenness of the heat diffusion plate 50 does not appear on the image display surface (front surface) of the display panel 20, the heat diffusion plate 50 and the display panel 20 are brought into surface contact without affecting the display image of the display panel 20. be able to.

Further, in the present embodiment, the heat diffusion plate 50 has a magnet accommodating portion 53 formed in a concave shape on the back surface. The magnet 60 is fixed to the heat diffusion plate 50 with at least a portion thereof accommodated in the magnet accommodation portion 53 .

According to this configuration, at least a portion of the magnet 60 overlapping the heat diffusion plate 50 in the overlapping direction (front-rear direction, Y-axis direction) of the display panel 20 and the heat diffusion plate 50 is within the thickness of the heat diffusion plate 50 . be accommodated. This suppresses an increase in the thickness of the image display device 10 due to the presence of the magnet 60 .

In the present embodiment, as shown in FIG. 4 , the magnet accommodating portion 53 is deeper than the total thickness of the magnet 60 and the adhesive sheet 61 that fixes the magnet 60 to the magnet accommodating portion 53 in the thermal diffusion plate 50 . formed. Therefore, the entire magnet 60 is housed in the magnet housing portion 53 . That is, the magnet 60 can be provided in the image display device 10 without increasing the thickness of the image display device 10 . As a result, the thickness of the image display device 10 can be reduced.

Further, in the present embodiment, a plurality of magnets 60 are two-dimensionally distributed and arranged on the heat diffusion plate 50 .

In this embodiment, as shown in FIG. 1, fifteen magnets 60 are distributed in a matrix along the back surface of the heat diffusion plate 50 . In this manner, the magnets 60 are scattered two-dimensionally, so that minute distortion of the display panel 20 caused by the magnetic force of the magnets 60 is dispersed. Therefore, for example, the linear distortion of the display panel 20 does not make the distortion conspicuous.

Image display device 10 according to the present embodiment further includes bonding member 70 that bonds peripheral edge portion 50 a of heat diffusion plate 50 and display panel 20 . A stepped portion 51 for accommodating the adhesive member 70 is formed on the peripheral portion 50 a of the heat diffusion plate 50 .

In this manner, the heat diffusion plate 50 and the display panel 20 are bonded together by the adhesive member 70 at their outer peripheral portions. As a result, the heat diffusion plate 50 and the display panel 20, which are constrained in the overlapping direction by the magnetic force of the magnet 60, are constrained by the adhesive force of the adhesive member 70 in the direction orthogonal to the overlapping direction. In other words, positional deviation of one of the heat diffusion plate 50 and the display panel 20 with respect to the other is suppressed. Therefore, for example, in the process of manufacturing the image display device 10, handling of a semi-finished product made up of a combination of the thermal diffusion plate 50 and the display panel 20 is facilitated. In addition, after the image display device 10 is completed, for example, it is difficult to form a gap between the heat diffusion plate 50 and the display panel 20, so that the heat dissipation efficiency of the display panel 20 is prevented from decreasing. As a result, temperature deterioration of the OLED elements in the outer peripheral portion of the display panel 20 is suppressed. Further, by bonding only the outer peripheral portions of the heat diffusion plate 50 and the display panel 20 with the bonding member 70, the heat diffusion plate 50 and the display panel 20 can be easily separated after bonding. Therefore, it is possible to reattach the heat diffusion plate 50 and the display panel 20, for example.

It should be noted that the peripheral edge portion 50 a of the heat diffusion plate 50 does not need to be adhered to the display panel 20 by the adhesive member 70 over the entire area. For example, only portions of the peripheral edge portion 50 a corresponding to the upper, left, and right sides of the heat diffusion plate 50 may be bonded to the display panel 20 with the adhesive member 70 . Even in this case, the effect of suppressing displacement of the display panel 20 with respect to the thermal diffusion plate 50 and the like can be achieved. Also, the adhesive member 70 may be separated into a plurality of parts according to the ease of attachment to the display panel 20 or the heat diffusion plate 50 .

Moreover, since the adhesive member 70 is housed in the stepped portion 51 , a gap is not formed between the heat diffusion plate 50 and the display panel 20 due to the thickness of the stepped portion 51 . Therefore, the adhesive member 70 can bond the heat diffusion plate 50 and the display panel 20 together without reducing the area of direct surface contact between the heat diffusion plate 50 and the display panel 20 .

Although the image display device 10 according to the embodiment has been described above, the image display device 10 may have one or more magnetic members at positions different from those shown in FIGS. Therefore, various modifications of the arrangement positions of the magnetic members will be described below, focusing on differences from the above-described embodiment.

[4. Modification]
FIG. 6A is a diagram showing a first example of layout of magnetic members according to a modification of the embodiment. FIG. 6B is a diagram showing a second example of the layout of the magnetic member according to the modification of the embodiment;

As shown in FIG. 6A, a plurality of magnetic members (magnets 60a) elongated in the left-right direction (X-axis direction) may be arranged vertically (Z-axis direction) on the back surface of the heat diffusion plate 50 . Further, as shown in FIG. A, a plurality of vertically elongated magnetic members (magnets 60b) may be arranged side by side on the back surface of the heat diffusion plate 50 . In either case, a relatively small number of magnets 60a or 60b is used to cover the display panel 20 over a relatively large area of the heat diffusion plate 50 compared to the case where the magnets 60 are scattered (see FIG. 1). can be attracted to the side. Although both the magnets 60a and b60b are formed linearly, there is no particular limitation on the shape of the magnetic member for attracting the display panel 20 to the heat diffusion plate 50 side. It may also be L-shaped, U-shaped, or the like.

Further, there are various modifications of the arrangement position of the magnetic member. For example, the magnets 60 may be arranged on the front surface of the heat spreader plate 50 instead of on the back surface of the heat spreader plate 50 . That is, the magnet 60 may be housed in the magnet housing portion 53 (see FIG. 4) provided on the front surface of the heat diffusion plate 50 . In this case, the magnetic force of the magnet 60 directly acts on the display panel 20 , so that the display panel 20 can be attracted to the heat diffusion plate 50 side.

Also, the magnet 60 may be fixed to the display panel 20 instead of the heat diffusion plate 50 . For example, the heat diffusion plate 50 is attached to the display panel 20 by fixing the magnet 60 to the back surface of the display panel 20 using an adhesive sheet 61 (see FIG. 4) and magnetically attaching the magnet 60 to the heat diffusion plate 50. may be In this case, a recess for accommodating the magnet 60 is provided on the front surface of the heat diffusion plate 50 at a position corresponding to the magnet 60, so that a wide area of the display panel 20 is brought into direct surface contact with the heat diffusion plate 50. can be done. When the magnet 60 is arranged on the back side of the heat diffusion plate 50 as in the above-described embodiment, the front surface of the heat diffusion plate 50 in contact with the display panel 20 can be made flat. It is advantageous in that it does not cause Matters relating to the placement position of these magnets 60 also apply to the magnets 60a and 60b shown in FIGS. 6A and 6B. That is, the magnet 60 a or 60 b may be arranged on the front side of the heat diffusion plate 50 or may be fixed to the display panel 20 .

Alternatively, the thermal diffusion plate 50 and the display panel 20 may be brought into direct contact with each other by the magnetic force of a plurality of magnets having different shapes.

Moreover, although metal such as iron or aluminum is exemplified as the material of the heat diffusion plate 50, the heat diffusion plate 50 may be formed of a non-metallic material. For example, the weight of the image display device 10 can be reduced by forming the thermal diffusion plate 50 from resin having high thermal conductivity.

Also, an electromagnet may be used instead of a permanent magnet as the magnetic member. For example, the display panel 20 can be attracted to the heat diffusion plate 50 by supplying power to the electromagnet at least while an image is displayed on the display panel 20 . As a result, the contact area between the display panel 20 and the thermal diffusion plate 50 increases (the adhesion is increased) during the period when the display panel 20 generates heat, thereby improving the heat radiation efficiency.

(Other embodiments)
As described above, the embodiments and their modifications have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments or modified examples in which changes, replacements, additions, omissions, etc. are made as appropriate. Further, it is also possible to combine the constituent elements described in the above embodiment or modifications to form a new embodiment. Therefore, other embodiments will be exemplified below.

For example, the adhesive member 70 that bonds the peripheral portion 50a of the heat diffusion plate 50 and the display panel 20 does not need to be a member using an adhesive such as an adhesive tape. The peripheral portion 50a of the heat diffusion plate 50 and the display panel 20 may be adhered.

Further, the adhesive member 70 may not be arranged between the peripheral edge portion 50 a of the heat diffusion plate 50 and the display panel 20 . Since the frame 30 is arranged around the heat diffusion plate 50 and the display panel 20 in a superimposed state, the frame 30 can restrict the movement of the display panel 20 in the upward and horizontal directions. A lower cabinet 90 (see FIG. 1) is arranged directly below the display panel 20 and fixed to the heat diffusion plate 50 . Therefore, it is possible to restrict the downward movement of the display panel 20 by the lower cabinet 90 .

Further, the frame 30 may be formed in a rectangular shape so as to surround the upper and lower end surfaces and the left and right end surfaces of the heat diffusion plate 50 and the back cover 40 . Also, the frame 30 may be divided into a plurality of members in consideration of ease of assembly and the like.

In addition, when the television receiver, monitor display, or the like in which the image display device 10 is incorporated has a member for supporting or protecting the outer peripheral portions of the display panel 20 and the heat diffusion plate 50 that are superimposed, the image display device 10 is mounted on the frame 30 does not have to be

Also, the display panel 20 may be a display panel of a different type from the organic EL panel. For example, an LED display panel having three types of LEDs that emit light in red, blue, and green, respectively, arranged in a matrix may be arranged in the image display device 10 as the display panel 20 .

As described above, the embodiments and their modifications have been described as examples of the technology of the present disclosure. To that end, the accompanying drawings and detailed description have been provided.

Therefore, among the components described in the attached drawings and detailed description, there are not only components essential for solving the problem, but also components not essential for solving the problem in order to illustrate the above technology. can also be included. Therefore, it should not be immediately recognized that those non-essential components are essential just because they are described in the attached drawings and detailed description.

In addition, since the above-described embodiments and modifications thereof are intended to illustrate the technology of the present disclosure, various changes, replacements, additions, omissions, etc., may be made within the scope of the claims or equivalents thereof. can be done.

The present disclosure is applicable to image display devices provided in television receivers, monitor displays, digital signage, or the like.

REFERENCE SIGNS LIST 10 image display device 20 display panel 30 frame 40 back cover 50 heat diffusion plate 50a peripheral portion 51 stepped portion 53 magnet housing portion 60, 60a, 60b magnet 61 adhesive sheet 70 adhesive member 90 lower cabinet

Claims (5)

a display panel for displaying an image on the front;
a heat diffusion plate arranged on the back side of the display panel;
a magnetic member that brings the back surface of the display panel into contact with the heat diffusion plate by attracting the display panel to the heat diffusion plate side by magnetic force ;
The thermal diffusion plate has a recessed accommodation portion having a bottom surface facing in the front-rear direction,
At least part of the magnetic member is housed in the housing section,
Image display device. The magnetic member is arranged on the back side of the heat diffusion plate,
The image display device according to claim 1. The thermal diffusion plate has the accommodating portion on the back surface,
The bottom surface faces away from the display panel,
The magnetic member is fixed to the thermal diffusion plate with at least a part of the magnetic member being accommodated in the accommodation portion.
3. The image display device according to claim 1 or 2. A plurality of the magnetic members are two-dimensionally distributed and arranged on the thermal diffusion plate,
The image display device according to any one of claims 1 to 3. further comprising an adhesive member for adhering the periphery of the heat diffusion plate and the display panel;
A stepped portion for accommodating the adhesive member is formed on the peripheral edge portion of the heat diffusion plate,
The image display device according to any one of claims 1 to 4.

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