Patent Description:
Patent Literature (PTL) <NUM> discloses a display device which includes a display panel and a backlight chassis which holds the display panel. The display device includes a source substrate in the lowest side portion of the backlight chassis. The source substrate is a substrate on which a plurality of source line drive circuits (source drivers) are mounted.

The present disclosure provides an image display device capable of increasing the quality of a displayed image and reducing the thickness of the image display device.

An image display device according to the present invention is defined in appended claim <NUM>.

The image display device according to the present disclosure is capable of increasing the quality of a displayed image and reducing the thickness of the image display device.

The inventors of the present application identified the following problems related to a conventional image display device. For example, a conventional television receiver is known which includes a display panel (organic electroluminescent (EL) panel) with organic light-emitting diodes (OLEDs).

The organic EL panel is a self-emitting display panel which does not require a backlight unit unlike a liquid crystal panel. Accordingly, the thickness and the size of a display panel module including the organic EL panel can be reduced compared with a display panel module including the liquid crystal panel.

Moreover, in order to further reduce the thickness of the display panel module including the organic EL panel, the display panel module can be configured, for example, such that a drive circuit substrate which drives the display of an image on the organic EL panel is disposed on the back surface of the organic EL panel. Specifically, the bottom end portion of the heat dissipating metal plate disposed along the back surface of the organic EL panel is eliminated so that the drive circuit substrate is disposed on the portion of the back surface of the organic EL panel thus exposed.

With this configuration, while the thickness of the display panel module is reduced, the heat dissipation properties of the bottom end portion of the organic EL panel is reduced. Accordingly, the OLED elements may degrade (temperature degradation) at the bottom end portion due to a rise in temperature. In this case, at the bottom end portion, problems occur which lead to a reduced quality in displayed image, such as reduced luminance due to temperature degradation or reduced contrast due to reduced luminance.

In contrast, in the case where a metal plate is disposed along the entire back surface of the organic EL panel and the drive circuit substrate is disposed on the back surface of the metal plate, the heat dissipation properties of the organic EL panel increases. However, how to arrange flexible printed circuits (FPCs) which are wiring members which connect the drive circuit substrate and the organic EL panel is problematic. Specifically, each FPC includes a drive integrated circuit (IC) which transmits various kinds of signals to the organic EL panel, for example. The drive IC generates heat when driven. Accordingly, in view of reduction in thickness of the display panel module and suppression in temperature degradation, how to arrange the FPCs is an important issue.

The present disclosure has been conceived based on such finding. As a result of intensive studies by the inventors of the present application, the inventors have arrived at an idea of an image display device which is capable of increasing the quality of a displayed image and reducing the thickness of the image display device.

Hereinafter, an embodiment (including its variations) will be described with reference to the drawings as necessary. Note that unnecessarily detailed descriptions may be omitted. For example, detailed descriptions of already known matters and overlapping description of substantially the same configuration may be omitted. This is to avoid the following description to become unnecessarily redundant, and to facilitate understanding of the person skilled in the art.

The inventors of the present application provide the accompanying drawings and the following description so that the person skilled in the art fully understands the present disclosure, and do not intend to limit the subject matter of the claims by this.

Moreover, in the following embodiment and variations, the top-bottom direction is represented by a Z-axis, the front-back direction is represented by a Y-axis, and the left-right direction is represented by an X-axis for the sake of description, but these do not limit the orientation of the image display device according to the present disclosure at the time of manufacture or usage. In the following descriptions, for example, an X-plus axis indicates the direction of the arrow of the X-axis and an X-minus axis indicates the direction opposite of the X-plus axis. The same applies to the Y-axis and the Z-axis. Note that the drawings are represented schematically and are not necessarily precise illustrations. Like reference signs indicate like elements in the drawings, and overlapping descriptions thereof are omitted or simplified.

First, an outline of a configuration of image display device <NUM> according to an embodiment will be described with reference to <FIG>. <FIG> is an external perspective view of image display device <NUM> according to the embodiment. <FIG> is a first exploded perspective view of image display device <NUM> according to the embodiment. <FIG> is a second exploded perspective view of image display device <NUM> according to the embodiment. Specifically, <FIG> is an exploded perspective view of image display device <NUM> when seen diagonally from the front, and <FIG> is an exploded perspective view of image display device <NUM> when seen diagonally from behind. <FIG> is a perspective view of a partial cross section of image display device <NUM> according to the embodiment. Specifically, <FIG> illustrates a portion of a cross section taken along line III-III in <FIG> when seen diagonally from the top.

Image display device <NUM> according to the present embodiment is a display panel module which includes display panel <NUM>. Image display device <NUM> is, for example, a device incorporated, as a device which displays an image, into a television receiver, a monitor display or another apparatus.

Specifically, as illustrated in <FIG>, image display device <NUM> includes display panel <NUM> which displays an image, and back cover <NUM> disposed along the back surface of display panel <NUM>.

In the present embodiment, display panel <NUM> is a self-emitting display panel, and specifically is an organic EL panel. In other words, image display device <NUM> is a display panel module (OLED module) which includes an organic EL panel. Display panel <NUM> which is an organic EL panel includes, for example, an EL substrate, a glass substrate on which a color filter is formed (CF substrate), a resin layer between the EL substrate and the CF substrate. However, the detailed illustration and description of those elements are omitted.

Back cover <NUM> is a cover disposed on the back side of image display device <NUM> as a display panel module. Back cover <NUM> is a member manufactured by, for example, applying press work to a rectangular metal plate member (metal plate) made of aluminum or iron. In the present embodiment, back cover <NUM> has a plurality of recesses <NUM> on the bottom end portion. Each recess <NUM> is recessed inward (upward) from the edge of the bottom of back cover <NUM>. There are protrusions <NUM> on the lateral sides of recess <NUM>. The functions and the like of recesses <NUM> of image display device <NUM> will be later described with reference to <FIG> and <FIG>.

In the present embodiment, back cover <NUM> also functions as a heat dissipating member which dissipates heat of display panel <NUM>. Specifically, the back surface of display panel <NUM> and metal back cover <NUM> are joined by adhesive sheet <NUM>. Adhesive sheet <NUM> is a type of so-called double-sided tape in which adhesive is disposed on the both sides of a sheet-like member, for example. In the present embodiment, a double-sided tape having a high thermal conductivity is used as adhesive sheet <NUM>. Moreover, the back surface of display panel <NUM> and almost the entire portion of back cover <NUM> above recesses <NUM> on the bottom end portion of back cover <NUM> are joined to each other by adhesive sheet <NUM> having a high thermal conductivity. Accordingly, the heat of display panel <NUM> can be emitted to the outside efficiently by metal back cover <NUM>.

Back cover <NUM> may also have design characteristics. For example, back cover <NUM> may be painted, or a resin or metal thin adhesive sheet or plate may be pasted to back cover <NUM>. In the case where back cover <NUM> is painted, black paint allows heat to be more efficiently emitted to the outside by dissipation.

Display panel <NUM> and back cover <NUM> do not have to be joined by single adhesive sheet <NUM>. Display panel <NUM> and back cover <NUM> may be joined by a plurality of adhesive sheets (double-sided tapes) arranged on the XZ plane. These adhesive sheets (double-sided tapes) may be spaced apart from each other.

Image display device <NUM> according to the present embodiment further includes rectangular ring-shaped support frame <NUM> which supports display panel <NUM> and back cover <NUM>, first double-sided tape <NUM>, and second double-sided tape <NUM>.

Support frame <NUM> is, for example, a member made of metal, such as aluminum. As illustrated in <FIG> and <FIG>, support frame <NUM> includes bottom frame <NUM>, right frame <NUM>, left frame <NUM>, and top frame <NUM>. In the present embodiment, these frames are connected to form single rectangular ring-shaped support frame <NUM>.

Support frame <NUM> does not have to be divided into four frames as above. Support frame <NUM> may be, for example, manufactured as a member which integrally includes the above four frames. For example, a member which forms the corner portion may be interposed between adjacent frames. The material of support frame <NUM> is not limited to metal. For example, resin may be used for the material of support frame <NUM>.

First double-sided tape <NUM> is a member which joins the outer edge of display panel <NUM> and support frame <NUM> and second double-sided tape <NUM> is a member which joins support frame <NUM> and back cover <NUM>. For example, as illustrated in <FIG>, right frame <NUM> of support frame <NUM> and display panel <NUM> are joined to each other by first double-sided tape <NUM>, and right frame <NUM> of support frame <NUM> and back cover <NUM> are joined to each other by second double-sided tape <NUM>.

As illustrated in <FIG> and <FIG>, image display device <NUM> thus configured includes two circuit substrates <NUM>, a plurality of FPCs <NUM>, and timing controller <NUM>, as components for driving the display of the image on display panel <NUM> which is an organic EL panel. Each FPC <NUM> is an example of a wiring member which connects circuit substrate <NUM> and display panel <NUM>. Timing controller <NUM> and two circuit substrates <NUM> are fixed to the back surface of back cover <NUM> by, for example, double-sided tapes or screwing into bosses on the back surface of back cover <NUM>. In <FIG>, <FIG> and <FIG> which will be described later, a plurality of circuit components included in circuit substrates <NUM> are not illustrated.

Timing controller <NUM> generates various kinds of signals, such as a clock signal for dividing the image data to be displayed on display panel <NUM> to each pixel of display panel <NUM>, and supplies the signals to circuit substrates <NUM>. Circuit substrates <NUM> are electronic circuit substrates which transmit, to FPCs <NUM>, the various signals supplied from timing controller <NUM>.

Although <FIG> and <FIG> illustrate FPCs <NUM> separately from display panel <NUM>, FPCs <NUM> are connected to display panel <NUM> in an assembled state of image display device <NUM>. In other words, display panel <NUM> and two circuit substrates <NUM> are connected to each other by a plurality of FPCs <NUM>. Specifically, FPCs <NUM> are connected to the electrode terminals of various signal lines of display panel <NUM> by thermal compression bonding using an aeolotropic conductive film, for example.

Next, a peripheral configuration of FPC <NUM> in image display device <NUM> will be described with reference to <FIG> and <FIG>.

<FIG> is a perspective view of the bottom end portion of the back side of image display device <NUM> according to the embodiment. <FIG> is a cross-sectional view of a portion of image display device <NUM> according to the embodiment where FPC <NUM> is disposed. Specifically, in <FIG>, a portion of a cross section taken along V-V in <FIG> is simply illustrated, and the lateral sides of FPC <NUM> and drive IC <NUM> included in FPC <NUM> are illustrated rather than the cross section.

In the present embodiment, back cover <NUM> is disposed along the back surface of display panel <NUM>. Back cover <NUM> also functions as a heat dissipating plate of display panel <NUM>. Circuit substrate <NUM> is disposed on the back surface of back cover <NUM>. FPCs <NUM> connected to the bottom end portion of display panel <NUM> are connected to circuit substrate <NUM>.

Image display device <NUM> thus configured is required to have a configuration for accommodating FPCs <NUM> in image display device <NUM> so as not to impair the heat dissipating function of back cover <NUM> as much as possible and not to increase the thickness of image display device <NUM> as much as possible.

In view of the above, in the present embodiment, as illustrated in <FIG> and <FIG>, such a configuration is adopted in which recesses <NUM> are disposed on the bottom end portion of back cover <NUM> at the positions corresponding to FPCs <NUM> so that FPCs <NUM> are accommodated in recesses <NUM>, and protrusions <NUM> at the lateral sides of recesses <NUM> dissipate heat of the bottom end portion of display panel <NUM>.

In other words, image display device <NUM> according to the present embodiment includes: display panel <NUM> which displays an image; back cover <NUM> disposed along the back surface of display panel <NUM>; circuit substrate <NUM> disposed on the back surface of back cover <NUM> for driving the display of the image on display panel <NUM>; and FPCs <NUM> which connect circuit substrate <NUM> and display panel <NUM>. Back cover <NUM> has recesses <NUM> recessed inward from the edge of back cover <NUM> in a plan view. FPCs <NUM> are disposed so as to pass through recesses <NUM>.

With this configuration, for example, each FPC <NUM> can be disposed so as to pass through back cover <NUM> in the thickness direction (Y-axis direction) without disposing FPC <NUM> extending under the edge of the bottom portion of back cover <NUM>. In other words, in image display device <NUM>, FPC <NUM> can be accommodated within the width range of back cover <NUM> in the height direction (Z-axis direction), and within the thickness range of back cover <NUM>. Moreover, back cover <NUM> has protrusions <NUM> at the portions which do not correspond to FPCs <NUM>. Hence, protrusions <NUM> are capable of receiving heat of the bottom end portion of display panel <NUM> and emitting the heat to the outside.

Moreover, back cover <NUM> which functions as a heat dissipating plate of display panel <NUM> is a cover on the back side of image display device <NUM>. In other words, back cover <NUM> functions as part of the outer shell of image display device <NUM>. In other words, for example, compared with the case where a heat dissipating plate is disposed on the back surface of display panel <NUM> and a cover which covers display panel <NUM> and the heat dissipating plate is disposed on the back side of the heat dissipating plate, the thickness of image display device <NUM> as a display panel module is reduced.

As described above, in the present embodiment, it is possible to accommodate FPCs <NUM> in recesses <NUM> disposed on the bottom end portion of back cover <NUM> disposed along the back surface of display panel <NUM>, and to make protrusions <NUM> on the lateral sides of recesses <NUM> receive the heat of the bottom end portion of display panel <NUM>. Accordingly, the temperature degradation of display panel <NUM> can be suppressed, and the reduced thickness of display panel <NUM> can be achieved. Hence, image display device <NUM> according to the present embodiment is capable of increasing the quality of a displayed image and reducing the thickness of image display device <NUM>.

Moreover, drive IC <NUM> connected to a plurality of signal lines of organic EL panel which is display panel <NUM> is disposed in each FPC <NUM>. For example, as illustrated in <FIG>, the portion of FPC <NUM> where drive IC <NUM> is disposed is accommodated in recess <NUM>. Drive IC <NUM> is an example of an electric component included in the wiring member.

In addition, in the present embodiment, bottom frame <NUM> which is part of support frame <NUM> is in contact with FPC <NUM> positioned at the back side of drive IC <NUM>.

In other words, image display device <NUM> according to the present embodiment includes bottom frame <NUM> extending along the edge of back cover <NUM> where recesses <NUM> are disposed. FPC <NUM> has a first end connected to display panel <NUM> and a second end connected to circuit substrate <NUM>, and includes drive IC <NUM> between the first end and the second end. Bottom frame <NUM> is thermally connected to drive IC <NUM>.

With such a configuration, drive IC <NUM> which generates heat at the time of driving of display panel <NUM> is thermally connected to bottom frame <NUM> made of metal, such as aluminum. Hence, the heat of drive IC <NUM> is mainly conducted to bottom frame <NUM>. Accordingly, the temperature degradation of display panel <NUM> caused by the heat of drive IC <NUM> is less likely to occur. Additionally, since bottom frame <NUM> is part of support frame <NUM> which supports display panel <NUM> and back cover <NUM>, the heat of drive IC <NUM> can be dissipated efficiently without, for example, using an additional member for dissipating the heat of drive IC <NUM>.

More specifically, in the present embodiment, as illustrated in <FIG>, drive IC <NUM> is pushed backward by heat insulating member <NUM>. In other words, image display device <NUM> according to the present embodiment includes heat insulating member <NUM> which is disposed between display panel <NUM> and bottom frame <NUM> and which pushes drive IC <NUM> toward bottom frame <NUM>.

With such a configuration, the heat of drive IC <NUM> can be efficiently conducted to bottom frame <NUM>, and the heat of drive IC <NUM> is less likely to be given to display panel <NUM>. As the material of heat insulating member <NUM>, for example, a porous material which is deformable and has an air layer, such as a highly expandable silicone foam or polyurethane foam, is used. Accordingly, heat insulating member <NUM> is capable of reducing heat conduction from drive IC <NUM> to display panel <NUM>. In addition, heat insulating member <NUM> is also capable of functioning as a buffer member which protects drive IC <NUM> and FPC <NUM>, for example, during the transportation of image display device <NUM>.

Moreover, in the present embodiment, each recess <NUM> of back cover <NUM> is disposed between two protrusions <NUM> aligned in the extension direction of the edge of back cover <NUM>. Each of two protrusions <NUM> is joined to bottom frame <NUM> by a joining member. Specifically, as illustrated in <FIG>, third double-sided tape <NUM>, which is an example of the joining member, is pasted to each protrusion <NUM>. Third double-sided tape <NUM> joins each protrusion <NUM> and bottom frame <NUM>.

Accordingly, the effectiveness of the function as a member which supports display panel <NUM> and back cover <NUM>, which is the function of bottom frame <NUM> which is part of support frame <NUM> can be increased. Moreover, while heat insulating member <NUM> disposed between display panel <NUM> and bottom frame <NUM> works so that display panel <NUM> and bottom frame <NUM> are separated from each other, third double-sided tape <NUM> works so that bottom frame <NUM> does not separate from display panel <NUM>. Hence, for example, the heat dissipating effect provided by bottom frame <NUM> caused by heat insulating member <NUM> pushing drive IC <NUM> is further increased.

Image display device <NUM> according to the embodiment has been described. In image display device <NUM>, recesses <NUM> of back cover <NUM> may have a configuration different from the configuration illustrated in <FIG>. Various variations of recesses <NUM> will be described below focusing on the differences from the above embodiment.

<FIG> is an exploded perspective view of image display device 10a according to Variation <NUM> of the embodiment. <FIG> is a cross-sectional view of a portion of image display device 10a according to Variation <NUM> of the embodiment where FPC <NUM> is disposed. In <FIG>, a partial cross section taken along VII-VII in <FIG> is simply illustrated, and the lateral sides of FPC <NUM> and drive IC <NUM> included in FPC <NUM> are illustrated rather than the cross sections.

As illustrated in <FIG> and <FIG>, back cover <NUM> included in image display device 10a according to Variation <NUM> has recesses <NUM> recessed inward from the edge of back cover <NUM> in a plan view, in a similar manner to back cover <NUM> according to the above embodiment. Moreover, each FPC <NUM> is disposed so as to pass through recess <NUM>. In a portion of each recess <NUM> according to Variation <NUM>, back cover <NUM> has thin portion 41a which is thinner than a portion of back cover <NUM> adjacent to recess <NUM> (for example, protrusion <NUM>). As illustrated in <FIG>, drive IC <NUM> of FPC <NUM> is disposed between thin portion 41a and bottom frame <NUM>.

In other words, in Variation <NUM>, recess <NUM> is notched from the edge of the bottom of back cover <NUM>, and has, at the lowermost part, an opening which passes through back cover <NUM> in the thickness direction (Y-axis direction). Moreover, above the opening, only the back side of the thick portion of back cover <NUM> has a portion recessed inward (upward) from the edge. As a result, thin portion 41a is formed along the back surface of display panel <NUM>. Heat insulating member 80a is attached to the back side (Y-plus axis side) of thin portion 41a. Heat insulating member 80a is disposed so as to push drive IC <NUM> toward bottom frame <NUM>.

With this configuration, recesses <NUM> of back cover <NUM> allow respective FPCs <NUM> and drive ICs <NUM> to be accommodated within the thickness range of back cover <NUM>. Existence of thin portions 41a increases the heat dissipation efficiency. Specifically, for example, in the above embodiment, since heat insulating member 80a is in a direct contact with the back surface of display panel <NUM>, the heat conduction from drive IC <NUM> to display panel <NUM> is reduced. However, the heat dissipation efficiency of the contact portion between display panel <NUM> and heat insulating member 80a is less likely to increase. In this regard, in Variation <NUM>, heat insulating member 80a is disposed so as to push the back surface of display panel <NUM> via thin portion 41a. Hence, the heat of the portion of the back surface of display panel <NUM> opposing heat insulating member 80a can be efficiently conducted to thin portion 41a. Moreover, since thin portion 41a functions as a portion which pushes drive IC <NUM> toward bottom frame <NUM> via heat insulating member 80a, heat dissipation of drive IC <NUM> via bottom frame <NUM> can be performed more efficiently. As described, in image display device 10a according to Variation <NUM>, since back cover <NUM> has thin portion 41a in each recess <NUM>, heat dissipation of display panel <NUM> and drive IC <NUM> can be efficiently performed.

As illustrated in <FIG>, heat insulating member 80a may be disposed at a position which covers the bottom edge of thin portion 41a. This prevents interference of FPC <NUM> and the bottom edge of thin portion 41a positioned relatively close to FPC <NUM>. In other words, heat insulating member 80a is capable of functioning as a buffer member which protects drive IC <NUM> and FPC <NUM>, for example, during transportation of image display device 10a.

<FIG> is a perspective view of recesses <NUM> and thin portions 41b according to Variation <NUM> of the embodiment. <FIG> is a cross-sectional view of a portion of image display device 10b according to Variation <NUM> of the embodiment where FPC <NUM> is disposed.

As illustrated in <FIG> and <FIG>, back cover <NUM> included in image display device 10b according to Variation <NUM> has recesses <NUM>. In Variation <NUM>, back cover <NUM> has thin portion 41b in each recess <NUM> in a similar manner to recesses <NUM> according to Variation <NUM>. However, in Variation <NUM>, thin portion 41b is formed in the entire region of recess <NUM> in a plan view (when seen from the Y-axis direction). As illustrated in <FIG>, drive IC <NUM> is disposed between thin portion 41b and bottom frame <NUM>.

In other words, in Variation <NUM>, each recess <NUM> does not substantially have a portion which passes through back cover <NUM> in the thickness direction (Y-axis direction). Only the back side of the thick portion of back cover <NUM> has a portion recessed inward (upward) from the edge of back cover <NUM>. As a result, thin portion 41b is formed along the back surface of display panel <NUM> in the entire region of recess <NUM>. In this case, too, each recess <NUM> of back cover <NUM> allows FPC <NUM> and drive IC <NUM> to be accommodated within the thickness range of back cover <NUM>. In addition, existence of thin portion 41b increases the heat dissipation efficiency. In other words, since heat insulating member 80b is disposed so as to push the back surface of display panel <NUM> via thin portion 41b, the heat of the portion of the back surface of display panel <NUM> opposing heat insulating member 80b is efficiently conducted to thin portion 41b. Moreover, since thin portion 41b functions as a portion which pushes drive IC <NUM> toward bottom frame <NUM> via heat insulating member 80b, heat dissipation of drive IC <NUM> via bottom frame <NUM> can be performed more efficiently. As described, in image display device 10b according to Variation <NUM>, since back cover <NUM> has thin portion 41b in each recess <NUM>, heat dissipation of display panel <NUM> and drive ICs <NUM> can be efficiently performed.

Moreover, in Variation <NUM>, as illustrated in <FIG>, the entire portion of thin portion 41b including an end portion closer to the edge of back cover <NUM> (on the Z-minus axis side) has a thickness which decreases as the thin portion gets closer to the edge. With this, for example, the pushing force of thin portion 41b toward drive IC <NUM> can be secured, while forming a space for appropriately accommodating FPC <NUM> and drive IC <NUM> on the back side of thin portion 41b. Moreover, compared with the case where the entire region of thin portion 41b is thin, the amount of heat extraction by thin portion 41b increases.

Note that the entire region of thin portion 41b does not have to have an inclined surface as illustrated in <FIG>. For example, only a portion of thin portion 41b including an end portion closer to the edge of back cover <NUM> may have a thickness which decreases as the thin portion gets closer to the edge. In other words, by reducing the thickness of the tip portion of thin portion 41b compared with the other portions, the clearance between the tip portion and bottom frame <NUM> in the front and back direction (Y-axis direction) can be increased. As a result, FPC <NUM> extending from display panel <NUM> and deflected can be accommodated between the tip portion of thin portion 41b and bottom frame <NUM> naturally. Moreover, in this case, by making the back surface of thin portion 41b above the tip portion parallel to the front surface of thin portion 41b (making it not inclined), the pushing force toward drive IC <NUM> caused by sandwiching drive IC <NUM> between bottom frame <NUM> and thin portion 41b is equalized. Accordingly, for example, degradation or positional deviation of drive IC <NUM> caused by a large force being applied partially to drive IC <NUM> can be reduced.

In Variation <NUM>, too, as illustrated in <FIG>, heat insulating member 80b may be disposed at a position which covers the bottom edge of thin portion 41b. Accordingly, heat insulating member 80b is capable of functioning as a buffer member which protects drive IC <NUM> and FPC <NUM>, for example, during transportation of image display device 10b. Additionally, as in Variation <NUM>, in the case where a thin portion is disposed only in a portion of each recess <NUM>, an inclined surface as illustrated in <FIG> may be formed in at least a portion of the thin portion.

As described above, the embodiment has been described as an example of the technique disclosed in the present application. The technique in the present disclosure, however, is not limited to such an example, and is also applicable to embodiments to which various kinds of modifications, replacements, additions, deletions and the like have appropriately been made. Moreover, each structural element described in the above embodiment may be combined to obtain a new embodiment. Another embodiment will be described below as an example.

For example, in the embodiment above, FPCs <NUM> are connected to the bottom end portion of display panel <NUM>, and back cover <NUM> has recesses <NUM> on the bottom end portion of back cover <NUM>. However, for example, in the case where FPCs <NUM> are connected to the left end portion of display panel <NUM>, back cover <NUM> may have recesses <NUM> on the left end portion of back cover <NUM>. In other words, recesses <NUM> of back cover <NUM> may be positioned so as to correspond to the positions where FPCs <NUM> are connected to display panel <NUM>. In this case, by disposing heat insulating member <NUM> at the position opposite to each drive IC <NUM>, heat insulating member <NUM> is capable of pushing drive IC <NUM> toward left frame <NUM>. Accordingly, left frame <NUM> is capable of more efficiently emitting the heat of drive IC <NUM> to the outside.

Moreover, the joining member which joins display panel <NUM> and back cover <NUM> does not have to be a member which uses an adhesive, such as a double-sided tape. For example, display panel <NUM> and back cover <NUM> may be joined by a silicone adhesive with a high thermal conductivity. This also applies to first double-sided tape <NUM>, second double-sided tape <NUM>, and third double-sided tape <NUM>. In place of these double-sided tapes, an adhesive such as a silicone adhesive may be used.

Moreover, display panel <NUM> and back cover <NUM> do not have to be joined by an adhesive or the like. For example, by using a member which sandwiches the peripheral portions of layered display panel <NUM> and back cover <NUM> from front and back, back cover <NUM> may be disposed along the back surface of display panel <NUM>.

The wiring member which connects display panel <NUM> and circuit substrate <NUM> may be a member other than FPC <NUM>. For example, a rigid flexible substrate which is a substrate in which only a portion can be flexed or curved may be used as the wiring member. Moreover, the electronic component included in the wiring member, such as FPC <NUM>, may be other than drive IC <NUM>. In other words, when an electronic component included in the wiring member generates heat when driven, for example, it is significant to cause part of support frame <NUM>, such as bottom frame <NUM>, to efficiently perform heat dissipation.

Display panel <NUM> may be a different kind of display panel from an organic EL panel. For example, a light emitting diode (LED) display panel including three kinds of LEDs which emit red, blue, and green light, arranged in a matrix may be disposed in image display device <NUM> as display panel <NUM>.

As described above, embodiments have been described as examples of the technique disclosed in the present disclosure. For this purpose, the accompanying drawings and detailed description are provided.

Accordingly, the structural elements described in the accompanying drawings and detailed description may include not only structural elements which are essential for solving the problem but also structural elements which are not essential for solving the problem but are provided for illustrating the technique. Therefore, the non-essential structural elements described in the attached drawings and/or the detailed description should not be instantly acknowledged to be essential structural elements.

Since the above embodiments are intended to illustrate the technique in the present disclosure, it is possible to make various kinds of modifications, replacements, additions, deletions, and the like within the scope of the claims.

Claim 1:
An image display device (<NUM>), comprising:
a display panel (<NUM>) which displays an image;
a back cover (<NUM>) disposed along a back surface of the display panel (<NUM>);
a circuit substrate (<NUM>) disposed on a back surface of the back cover (<NUM>), the circuit substrate (<NUM>) being for driving a display of the image on the display panel (<NUM>); and
a wiring member (<NUM>) which connects the circuit substrate (<NUM>) and the display panel (<NUM>),
wherein the back cover (<NUM>) has a recess (<NUM>) which is recessed inward from an edge of the back cover (<NUM>) in a plan view, and
the wiring member (<NUM>) is disposed so as to pass through the recess (<NUM>), wherein the wiring member (<NUM>) has a first end connected to the display panel (<NUM>) and a second end connected to the circuit substrate (<NUM>), and includes an electronic component (<NUM>) between the first end and the second end, wherein the electronic component (<NUM>) is accommodated in the recess (<NUM>),
characterised in that the first end of the wiring member (<NUM>) is connected to the bottom end portion of the display panel in the recess.