JP2013015637A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an occurrence of disproportion of a temperature distribution in a liquid crystal display device of side light type that is disposed with a drive circuit of a liquid crystal cell on the upper side of a light source part including a light-emitting diode.SOLUTION: A liquid crystal display device includes: a backlight BL including a light guide plate LG, and a light source part S which is disposed lateral to the light guide plate LG, which has at least one light-emitting diode element and to which a first flexible substrate F1 is connected; a liquid crystal cell LC which is disposed on the upper side of the backlight BL and which has a drive circuit DR on the upper side of the light source part S; and a metal exterior member UF formed on the outside of at least one of the backlight BL and the liquid crystal cell LC. The liquid crystal display device includes a heat-transfer member TP fixed between the light source part S and the liquid crystal cell LC, and the heat-transfer member TP extends outward from between the light source part S and the liquid crystal cell LC and is closely fixed to the exterior member UF.

Description

  The present invention relates to a liquid crystal display device.

  As one of backlights of a liquid crystal display device, a sidelight type in which a light source such as a light emitting diode (LED) is disposed on the side of a light guide plate is known.

  Patent Document 1 includes a configuration in which an LED is mounted on a printed board and a heat dissipation base is connected to the printed board, and that a heat dissipation sheet containing metal or filler is used for the heat dissipation base.

US Patent Publication No. 2009/096953

  Here, in the case of achieving a framed frame in a sidelight type liquid crystal display device using a light emitting diode, a light source in which an end portion of a liquid crystal cell on which a drive circuit is mounted is disposed on a side of a light guide plate It is conceivable to arrange them so that they are aligned with each other.

  FIG. 12 is a diagram showing a temperature distribution generated in such a sidelight type liquid crystal display device. In the figure, a state in which the thermal load is concentrated and the temperature distribution is biased is shown, and the upper side in the drawing in which the liquid crystal cell driving circuit and the light incident side of the light source are arranged is at a high temperature.

  Further, when the thickness of the liquid crystal display device is reduced, the thermal conductivity becomes low because the optical sheet or the like has a small cross-sectional area. In such a case, if a temperature imbalance as shown in FIG. 12 occurs in the sheet, undulation may occur due to a difference in thermal expansion amount in the sheet.

  The present invention has been made in view of the above problems, and an object of the present invention is to suppress the occurrence of temperature distribution imbalance in a sidelight type liquid crystal display device in which a driving circuit for a liquid crystal cell is disposed above a light source unit including a light emitting diode. And

  In view of the above problems, a liquid crystal display device according to the present invention has a light guide plate and a light source that is disposed on a side of the light guide plate and has at least one light emitting diode element and to which a first flexible substrate is connected. A liquid crystal cell having a driving circuit above the light source unit, and a metal formed outside at least one of the backlight and the liquid crystal cell. A heat transfer member is fixed between the light source part and the liquid crystal cell, and the heat transfer member is interposed between the light source part and the liquid crystal cell. It extends outward and is fixed in close contact with the outer shape member.

  In one mode of the liquid crystal display device according to the present invention, the heat transfer member has flexibility, and is bonded to the outer shape member by extending from the light source unit and the liquid crystal cell and further bending. It may be characterized by that.

  In one aspect of the liquid crystal display device according to the present invention, the heat transfer member is formed on a base layer, an upper adhesive layer formed on the upper side of the base layer, and on the lower side of the base layer. A lower adhesive layer, and is fixed between the light source unit and the liquid crystal cell by the upper adhesive layer and the lower adhesive layer.

  In one embodiment of the liquid crystal display device according to the present invention, at least one of the base material layer, the upper adhesive layer, and the lower adhesive layer has a metal filler, carbon particles, or a conductive material. It may be characterized by containing silicon particles.

  In one mode of the liquid crystal display device according to the present invention, the heat transfer member is bonded to the outer shape member by one of the upper adhesive layer and the lower adhesive layer, and the outer shape of the heat transfer member In the part adhered to the member, the other of the upper adhesive layer and the lower adhesive layer may be covered with a protective layer.

  In one mode of the liquid crystal display device according to the present invention, the heat transfer member is bonded to the outer shape member by one of the upper adhesive layer and the lower adhesive layer, and the outer shape of the heat transfer member In the part adhered to the member, the base material layer may be exposed from the other of the upper adhesive layer and the lower adhesive layer.

  In one aspect of the liquid crystal display device according to the present invention, the base layer of the heat transfer member includes at least one of a carbon layer, a metal layer, and a conductive silicon layer, and a resin layer. It may be a feature.

  Further, in one aspect of the liquid crystal display device according to the present invention, the first flexible substrate is disposed on the upper side of the light source unit, the lower adhesive layer has an insulating property, and the heat transfer member includes: The lower adhesive layer may be adhered to the first flexible substrate.

  In the liquid crystal display device according to the aspect of the invention, the backlight may include a mold frame that surrounds the light guide plate and an outer periphery of the light source unit, and the heat transfer member may be formed by the lower adhesive layer. It may be characterized by being adhered to the frame.

  In one aspect of the liquid crystal display device according to the present invention, a spacer member is disposed above the light source unit, and the heat transfer member is bonded to the spacer member by the lower adhesive layer. It is good.

  In one mode of the liquid crystal display device according to the present invention, the heat transfer member may be bonded to the outer shape member while avoiding contact with the first flexible substrate.

  In one aspect of the liquid crystal display device according to the present invention, the heat transfer member is adhered to the liquid crystal cell so as to surround a display region of the liquid crystal cell, and blocks light from the backlight. It may be a feature.

  In one mode of the liquid crystal display device according to the present invention, a second flexible substrate is connected to the drive circuit of the liquid crystal cell, and the heat transfer member is a partial region of the second flexible substrate. The second flexible substrate may be bent so as to be in close contact with both surfaces of the second flexible substrate.

  According to the present invention, it is possible to suppress the occurrence of temperature distribution imbalance in a sidelight type liquid crystal display device in which a liquid crystal cell drive circuit is disposed above a light source unit including a light emitting diode.

It is an expansion | deployment perspective view which shows each member of the liquid crystal display device which concerns on 1st Embodiment. It is a top view of the liquid crystal display device of a 1st embodiment. It is sectional drawing which shows the III-III cross section in FIG. It is a figure for demonstrating the modification 1 of 1st Embodiment. It is a figure for demonstrating the modification 2 of 1st Embodiment. It is a figure for demonstrating the liquid crystal display device which concerns on 2nd Embodiment. It is a figure for demonstrating the liquid crystal display device which concerns on 3rd Embodiment. It is a figure for demonstrating the liquid crystal display device which concerns on 4th Embodiment. It is a figure for demonstrating the liquid crystal display device which concerns on 5th Embodiment. It is a figure for demonstrating the liquid crystal display device which concerns on 6th Embodiment. It is a figure for demonstrating the liquid crystal display device which concerns on 7th Embodiment. It is a figure which shows the temperature distribution which arises in the sidelight type liquid crystal display device by which the drive circuit of the liquid crystal cell is arrange | positioned above the light source part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is an exploded perspective view showing each member of the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a top view of the liquid crystal display device of the present embodiment and shows a state in which the respective members of FIG. 1 are assembled. FIG. FIG. As shown in these drawings, the liquid crystal display device according to this embodiment includes a liquid crystal cell LC, a backlight BL, a lower frame UF as an outer shape member, and a heat transfer member TP.

  As shown in FIG. 3, the liquid crystal cell LC includes two substrates, a thin film transistor substrate SUB and a counter substrate CF, and further includes a drive circuit DR. The thin film transistor substrate SUB has a plurality of thin film transistors (TFTs) formed in a matrix, and a lower polarizing plate PL1 is disposed below the thin film transistors. The counter substrate CF has a color filter, and the upper polarizing plate PL2 is disposed on the upper side thereof.

  As shown in FIG. 2 and the like, the drive circuit DR is mounted along the end TE of the liquid crystal cell LC, and is along one side of the rectangular thin film transistor substrate SUB. A power source or a signal is output from the drive circuit DR to a display area for displaying an image, and the crystal state of the liquid crystal layer sandwiched between the thin film transistor substrate SUB and the counter substrate CF is controlled for each pixel. The drive circuit DR of the present embodiment has a semiconductor chip mounted on the thin film transistor substrate SUB. The drive circuit DR may be formed directly on the thin film transistor substrate SUB, and the drive circuit DR includes the second flexible substrate F2. (Not shown in FIGS. 2 and 3) are connected.

  The backlight light incident on the liquid crystal cell first passes through the lower polarizing plate PL1 as linearly polarized light, and when passing through the liquid crystal layer, the polarization direction is changed for each pixel according to the crystal state. In the upper polarizing plate PL2, light from the liquid crystal layer is transmitted or shielded according to the polarization state, thereby forming an image in the display area.

  Next, the backlight BL of the present embodiment includes a light source unit S, a light guide plate LG, a reflection sheet RS, an optical sheet OS, and a mold frame MF.

  The light source unit S has one or a plurality of light emitting diode elements, and is configured by arranging the light emitting diode elements inside a resin formed in a rectangular shape as shown in FIG. In the present embodiment, the first flexible substrate F1 is connected to the upper side (the liquid crystal cell LC side) of the light source unit S, whereby power and signals are input to each light emitting diode element in the light source unit S and controlled. .

  The light guide plate LG is formed in a rectangular plate shape by, for example, injection molding a material such as resin. In the present embodiment, as shown in FIG. 3 and the like, the light source unit S faces the side surface that is continuous with the light emitting surface LE of the light guide plate LG, and the light source unit S is arranged over almost the entire side of the rectangular light guide plate LG. Is done. Light from the light source unit S is guided by the light guide plate LG and output to the display area. Note that the first flexible substrate F1 is also fixed to the light guide plate LG by the tape material AD.

  The reflection sheet RS is arranged facing the lower surface of the light guide plate LG. The light that reaches the reflection sheet RS is reflected to the liquid crystal cell side and returned to the light guide plate LG again. In addition, one or a plurality of optical sheets OS are arranged on the upper side of the light guide plate LG, and the light emitted from the light emitting surface LE is condensed or diffused on the optical sheet OS to form a substantially uniform light quantity distribution. It enters the cell.

  The mold frame MF is interposed between the light source unit S and the thin film transistor substrate SUB, and is a resinous member that supports the liquid crystal cell LC. As shown in FIG. 2 and FIG. 3, the mold frame MF of the present embodiment has an inverted L-shaped cross-sectional shape and is formed so as to surround the outer periphery of the light guide plate LG and the light source unit S. The position of a member such as LG is constrained.

  The liquid crystal display device of the present embodiment further includes a lower frame UF, which is a metal member formed outside the light guide plate LG and the light source part S. Specifically, the lower frame UF is a box-shaped member that houses each member of the backlight BL as shown in FIGS. 1 to 3. Further, the lower frame UF specifically includes a parallel portion formed in parallel to the liquid crystal cell LC or the light guide plate LG, and a side portion that is bent from the parallel portion and formed on the side of the backlight BL. And have.

  As shown in FIGS. 2 and 3, the parallel portion of the lower frame UF is formed below the light guide plate LG and the reflection sheet RS. Further, the side portion is formed so as to avoid the overlap with the liquid crystal cell LC in a plan view and surround the outer periphery of the light source unit S and the light guide plate LG. An inner side surface of the side portion is located outward from the thin film transistor substrate SUB and faces the mold frame MF. Note that the lower frame UF of the present embodiment is a member that avoids the space between the liquid crystal cell LC and the light source unit S and does not intervene between them.

  In the liquid crystal display device of the present embodiment having the above-described configuration, as shown in FIG. 3 and the like, the driving circuit DR of the liquid crystal cell LC is disposed above the light source unit S in the backlight BL, and further the driving The circuit DR and the light source unit S are overlapped in plan view. (In another aspect, one side where the drive circuit DR is formed in the rectangular liquid crystal cell (thin film transistor substrate SUB) and one side where the light source unit S is arranged in the rectangular backlight BL (light guide plate LG) Thus, the space required for the light source unit S and the space required for the drive circuit DR are shared, and the liquid crystal display device is framed. However, the temperature distribution as shown in FIG. 12 is generated by the heat generation from both the light source unit S and the drive circuit DR.

  In particular, the liquid crystal display device of this embodiment is fixed between the light source unit S and the liquid crystal cell LC (thin film transistor substrate SUB) on which the drive circuit DR is mounted in order to improve such temperature distribution. A thermal member TP is provided. As shown in FIG. 3, the heat transfer member TP is fixed between the end portion TE where the drive circuit DR is disposed and the light source unit S, and extends outward from between the drive circuit DR and the light source unit S. The lower frame UF is fixed in close contact with the lower frame UF. Thus, heat generated from the drive circuit DR and the light source unit S is radiated to the outside through the lower frame UF.

  Specifically, the heat transfer member TP of the present embodiment is a flexible film-like member that extends from between the light source unit S and the liquid crystal cell LC and is further curved to form the lower frame UF. Bonded to the side part. The heat transfer member TP includes a base material layer L1 formed of a resin such as PET, an upper adhesive layer L2 formed on the upper side of the base material layer L1, and a lower adhesive formed on the lower side of the base material layer L1. The two adhesive layers are formed by applying an adhesive member to the base material layer L1. Further, the heat transfer member TP of the present embodiment is fixed by being bonded to the thin film transistor substrate SUB with the upper adhesive layer L2 and being bonded to the mold frame MF with the lower adhesive layer L3, and further curved. By doing so, the lower adhesive layer L3 is bonded to the lower frame UF.

  Further, the heat transfer member TP is configured such that at least one of the base material layer L1, the upper adhesive layer L2, and the lower adhesive layer L3 contains a heat transfer material of any one of a metal filler, carbon particles, and conductive silicon. The As a result, heat transfer is improved, and the heat transfer member TP becomes a member having higher heat transfer than the mold frame MF, and can efficiently dissipate heat generated from the drive circuit DR and the light source unit S. . In the present embodiment, the upper adhesive layer L2 is formed by mixing a metal filler with an adhesive resin. The base material layer L1 may be formed of a plurality of layers including at least one of a carbon layer, a metal layer, and a conductive silicon layer, and a PET resin layer. The heat transfer property of TP will be improved.

  The heat transfer member TP of the present embodiment also functions as a light shielding tape that shields the frame area of the liquid crystal cell LC from the backlight BL and fixes the liquid crystal cell LC to the backlight BL. For this reason, the heat transfer member TP is formed in a frame shape so as to surround the display region, and the base material layer L1 of the heat transfer member TP is formed of a light-shielding member.

  Further, in the present embodiment, the cutout part CU1 is formed in the mold frame MF, and the cutout part CU2 is formed in the lower frame UF as the outer shape member. The first flexible substrate F1 passes through the notches CU1 and CU2, and the heat transfer member TP is bonded to the lower frame UF while avoiding contact with the first flexible substrate F1. For this reason, the heat transfer member TP has a portion that is formed shorter than the portion that is bonded to the lower frame UF, and the first flexible substrate F1 has two notches from below the portion that is formed short. Pass through and stretch outward. Note that, for example, when an insulating member is used for the heat transfer member TP as in the case of a second embodiment described later, the first flexible substrate F1 and the heat transfer member TP come into partial contact. It may be.

  Below, the modification of the heat-transfer member TP in this embodiment is demonstrated.

  FIG. 4 is a diagram for explaining a first modification of the present embodiment. In Modification 1, the lower adhesive layer L3 of the heat transfer member TP is bonded to the lower frame UF, and the protective layer PR is formed on the upper adhesive layer L2 of the portion bonded to the lower frame UF. The protective layer PR is formed by printing on the upper adhesive layer L2 by inkjet. By covering the upper adhesive layer L2 with the protective layer PR, adhesion of foreign matters is prevented in the adhesive layer exposed outside the outer shape member.

  FIG. 5 is a diagram showing a second modification of the present embodiment. In Modification 2, the lower adhesive layer L3 of the heat transfer member TP is bonded to the lower frame UF, the upper adhesive layer L2 of the portion bonded to the lower frame UF is removed, and the base material layer L1 is bonded to the lower frame UF. It is designed to be exposed outside. Since the upper adhesive layer L2 is removed, the adhesion of foreign matters on the outside of the outer shape member is prevented.

[Second Embodiment]
Next, a liquid crystal display device according to a second embodiment of the present invention will be described. FIG. 6 is a diagram showing a state of the liquid crystal display device according to the second embodiment, and is a cross-sectional view corresponding to the III-III cross section of FIG. 2 in the first embodiment.

  The liquid crystal display device according to the second embodiment does not include the mold frame MF, and the heat transfer member TP is bonded to the first flexible substrate F1 connected to the light source unit S. Therefore, the heat transfer member TP has an insulating property at least in the lower adhesive layer L3, and the lower adhesive layer L3 is formed only of an adhesive resin material and does not include a metal filler or the like. It has become. On the other hand, the upper adhesive layer L2 is formed by mixing a metal filler or the like in an adhesive resin material in order to improve heat transfer. Except for these points, since the second embodiment is the same as the first embodiment, description of other configurations will be omitted.

[Third Embodiment]
Next, a liquid crystal display device according to a third embodiment of the present invention will be described. FIG. 7 is a diagram showing a state of the liquid crystal display device according to the third embodiment, and is a cross-sectional view corresponding to the III-III cross section of FIG. 2 in the first embodiment.

  In the third embodiment, the backlight BL includes a spacer member SP having a rectangular cross section instead of the mold frame MF. The spacer member SP is a rectangular columnar member extending along the light source unit S, and is disposed on only one side where the drive circuit DR and the light source unit S are present, and is not disposed on the other side. Except for this point, the second embodiment is the same as the first embodiment, and the description of the other configurations is omitted.

  In the case of the first embodiment and the third embodiment, the mold frame MF or the spacer member SP exists, and contact between the heat transfer member TP and the first flexible substrate F1 is avoided. Therefore, also in these embodiments, conduction between the heat transfer member TP and the first flexible substrate F1 does not occur. In the first and third embodiments, the lower adhesive layer L3 may be mixed with a metal filler or the like to improve heat transfer.

[Fourth Embodiment]
Next, a liquid crystal display device according to a fourth embodiment of the present invention is described. FIG. 8 is a diagram showing a state of the liquid crystal display device according to the fourth embodiment, and is a cross-sectional view corresponding to the III-III cross section of FIG. 2 in the first embodiment.

  In the fourth embodiment, the heat transfer member TP is adhered and adhered to the inner side surface of the side portion of the lower frame UF. Specifically, as shown in FIG. 8, the heat transfer member TP extends from between the liquid crystal cell LC and the light source part S, and is further curved to thereby form a gap between the side portion of the lower frame UF and the mold frame MF. And is bonded and fixed at the side portion of the lower frame UF. Except for this point, the fourth embodiment is the same as the first embodiment, and the description of other configurations is omitted. In the fourth embodiment, as in Modification 1 or Modification 2 of the first embodiment, the portion where the heat transfer member TP is bonded to the lower frame UF is opposite to the bonded side. The lower adhesive layer L3 on the side may be removed, or the protective layer PR may be formed.

[Fifth Embodiment]
Next, a liquid crystal display device according to a fifth embodiment of the present invention is described. FIG. 9 is a diagram showing a state of the liquid crystal display device according to the fifth embodiment, and is a cross-sectional view corresponding to the III-III cross section of FIG. 2 in the first embodiment.

  The liquid crystal display device according to the fifth embodiment further includes a metal upper frame OF, and the upper frame OF is an outer shape member formed outside the liquid crystal cell LC. The upper frame OF has a parallel part formed in parallel to the liquid crystal cell LC on the upper side of the liquid crystal cell LC, and is bent to the side of the liquid crystal cell LC by bending from the parallel part. Has a part. The heat transfer member TP extends from between the liquid crystal cell LC and the light source part S and is curved so as to be bonded to the side portion of the upper frame OF. Except for this point, the fifth embodiment is the same as the first embodiment, and thus the description of other configurations is omitted.

  Also in the fifth embodiment, as in Modification 1 or Modification 2 of the first embodiment, the portion where the heat transfer member TP is bonded to the upper frame OF is opposite to the bonded side. The lower adhesive layer L3 may be removed, or the protective layer PR may be formed. Further, the heat transfer member TP in the fifth embodiment may be bonded to the inner side surface of the side portion of the upper frame OF, and in this case as well, the upper adhesive layer L2 may be removed similarly. The protective layer PR may be formed.

[Sixth Embodiment]
Next, a liquid crystal display device according to a sixth embodiment of the present invention is described. FIG. 10 is a diagram showing a state of the liquid crystal display device according to the sixth embodiment, and is a cross-sectional view corresponding to the III-III cross section of FIG. 2 in the first embodiment.

  The liquid crystal display device according to the sixth embodiment further includes an upper housing BD1 and a lower housing BD2 in addition to the lower frame UF, and these include at least one of the liquid crystal cell LC and the backlight BL. It is the external shape member formed in the outside. These external members have a parallel portion formed in parallel to the liquid crystal cell LC below the backlight BL or above the liquid crystal cell LC, and further on the side of at least one of the backlight BL and the liquid crystal cell. , And a side portion formed by bending from the parallel portion. The heat transfer member TP extends from between the liquid crystal cell LC and the light source part S and is bent so as to be bonded to the side portion of the lower housing BD2. Except for this point, the sixth embodiment is the same as the first embodiment and the fifth embodiment, and thus the description of other configurations is omitted.

[Seventh Embodiment]
Next, a liquid crystal display device according to a seventh embodiment of the present invention is described. FIG. 11 is a diagram for explaining a liquid crystal display device according to the seventh embodiment.

  In the seventh embodiment shown in the figure, the heat transfer member TP is bent as shown in FIG. 11 in order to take EMS countermeasures for the second flexible substrate F2 connected to the drive circuit DR. It has become. Specifically, the heat transfer member TP is bent so as to be in close contact with both surfaces of a partial region of the second flexible substrate F2, and is bonded to the second flexible substrate F2.

  Further, in the heat transfer member TP in the seventh embodiment, the liquid crystal cell LC is in contact with the second flexible substrate F2 and the portion that is curved from between the liquid crystal cell LC and the light source portion S and is bonded to the outer shape member. And a portion that extends outward from between the light source portions S, and the latter has a member shape that extends longer than the former.

  In addition, the upper surface of the heat transfer member TP is in close contact with both surfaces of the partial region where the second flexible substrate F2 is in close contact with the heat transfer member TP. The heat transfer member TP may be adhered to the second flexible substrate F2 by the upper adhesive layer L2. For example, an adhesive layer different from the upper adhesive layer L2 is formed on the base material layer L1, and the second You may adhere | attach only on the upper surface of the flexible substrate F2. In addition, the second flexible substrate F2 and the heat transfer member TP may be further folded along the lower frame UF from the state shown in FIG. 11, for example, or may be stored so as to be accommodated in other outer shape members. .

  As described above, each embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the configuration described in the embodiment can be replaced with a configuration that is substantially the same, a configuration that exhibits the same effects, or a configuration that can achieve the same purpose.

  LC liquid crystal cell, BL backlight, DR drive circuit, F1 first flexible substrate, F2 second flexible substrate, TP heat transfer tape, MF mold frame, OS optical sheet, LG light guide plate, LE light emitting surface, RS reflection sheet , S light source part, UF lower frame, OF upper frame, BD1 upper casing, BD2 lower casing, PL1 lower polarizer, PL2 upper polarizer, CF counter substrate, SUB thin film transistor substrate, TE end, L1 base material layer , L2 upper adhesive layer, L3 lower adhesive layer, AD tape material, SP spacer member.

Claims (13)

A backlight having a light guide plate and a light source unit disposed on a side of the light guide plate and having at least one light emitting diode element and connected to the first flexible substrate;
A liquid crystal cell disposed above the backlight and having a drive circuit above the light source unit;
A metallic outer shape member formed on the outside of at least one of the backlight and the liquid crystal cell,
A heat transfer member is fixed between the light source unit and the liquid crystal cell,
The heat transfer member extends outward from between the light source unit and the liquid crystal cell, and is fixed in close contact with the outer shape member.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 1,
The heat transfer member has flexibility and is bonded to the outer shape member by extending and bending from between the light source unit and the liquid crystal cell.
A liquid crystal display device characterized by the above. A liquid crystal display device according to claim 2,
The heat transfer member is
A base material layer;
An upper adhesive layer formed on the upper side of the base material layer;
A lower adhesive layer formed on the lower side of the base material layer,
The upper adhesive layer and the lower adhesive layer are fixed between the light source unit and the liquid crystal cell.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
At least one of the base material layer, the upper adhesive layer, and the lower adhesive layer contains a metal filler, carbon particles, or conductive silicon particles.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
The heat transfer member is bonded to the outer shape member by one of the upper adhesive layer and the lower adhesive layer,
In the portion of the heat transfer member that is bonded to the outer shape member, the other of the upper adhesive layer and the lower adhesive layer is covered with a protective layer. The liquid crystal display device according to claim 3,
The heat transfer member is bonded to the outer shape member by one of the upper adhesive layer and the lower adhesive layer,
In the portion bonded to the outer shape member of the heat transfer member, the base material layer is exposed from the other of the upper adhesive layer and the lower adhesive layer.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
The base material layer of the heat transfer member includes at least one of a carbon layer, a metal layer, and a conductive silicon layer, and a resin layer.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
The first flexible substrate is disposed on the upper side of the light source unit,
The lower adhesive layer has an insulating property,
The heat transfer member is bonded to the first flexible substrate by the lower adhesive layer.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
The backlight is
Having a mold frame surrounding the light guide plate and the light source part;
The heat transfer member is bonded to the mold frame by the lower adhesive layer.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
A spacer member is disposed above the light source unit,
The heat transfer member is bonded to the spacer member by the lower adhesive layer.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
The heat transfer member is adhered to the outer shape member while avoiding contact with the first flexible substrate.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
The heat transfer member is bonded to the liquid crystal cell so as to surround a display area of the liquid crystal cell, and shields light from the backlight.
A liquid crystal display device characterized by the above. The liquid crystal display device according to claim 3,
A second flexible substrate is connected to the drive circuit of the liquid crystal cell,
The heat transfer member is bent so as to be in close contact with both surfaces of a part of the second flexible substrate, and is adhered to the second flexible substrate.
A liquid crystal display device characterized by the above.

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