JP2001305971A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which can remove influence of a noise generated inside a display device and inside a product carrying the display device. SOLUTION: The display device 11 is provided with a transparent conductive film 20 covering a display part and at least a part of a drive circuit between the display part and the drive circuit and a light source. Since the transparent conductive film has excellent conductivity, noise is absorbed and when the transparent conductive film is connected with a FG(frame ground), noise can be discharged. Accordingly, malfunction of the drive circuit due to a noise and an image noise can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source, a display unit for forming an optical image of a light beam emitted from the light source in accordance with image information, and a drive circuit for driving a pixel electrode constituting the display unit. The present invention relates to a display device provided.

[0002]

2. Description of the Related Art A display device having a liquid crystal panel is known as a display device having a light source device and a light modulation device for modulating a light beam emitted from the light source device. In such a display device, a backlight is arranged as a light source device on the back of a liquid crystal panel or the like, and light emitted from the backlight is modulated by the liquid crystal panel to display an image or the like. It is used as a device, an image display device of a portable or wall-mounted television, a viewfinder of a video camera, and the like.

[0003]

By the way, in recent color liquid crystal panels, a driver IC is often mounted on a glass substrate of the liquid crystal panel. But,
With the reduction in size and size of color liquid crystal panels, noise generated from a power supply circuit, a fluorescent tube, and a control circuit may cause a malfunction of a driver IC and image noise.

As one method, a noise is cut off by forming a copper pattern or the like on a substrate or by disposing a shielding member such as a sheet metal on the light source device side of the substrate in accordance with the arrangement of the driver IC. A way is being considered. However, since these members are not transparent,
It can be installed only outside the display unit so as not to obstruct the emitted light beam from the light source device to the display unit of the liquid crystal panel, and noise may jump into the driver IC via the scanning electrodes and data electrodes of the liquid crystal panel. Yes, complete prevention is not possible. Further, even if these members are installed outside the display unit, there is a possibility that optical troubles such as darkening of the periphery thereof may occur.

[0005] It is an object of the present invention to provide a display device capable of removing the influence of noise generated inside the display device and the product into which the display device is incorporated on the display unit.

[0006]

In order to achieve the above object, a display device according to the present invention comprises a light source, a display section for forming a light beam emitted from the light source in accordance with image information, and a display section. A driving circuit for driving a pixel electrode forming a display portion, wherein a transparent conductive film covering at least a part of the display portion and the driving circuit is provided between the display portion and the driving circuit and the light source. The transparent conductive film provided is electrically connected to a frame ground of the display device.

According to the present invention, since the transparent conductive film has extremely high conductivity, noise generated from the light source is absorbed, and the noise is emitted by connecting the transparent conductive film to FG (frame ground). be able to. Therefore, noise does not reach the drive circuit directly or indirectly via the scan electrode or the data electrode of the display portion, and malfunction of the drive circuit and image noise can be prevented. Further, since the display section is covered with the transparent conductive film, the light flux emitted from the light source to the display section is not obstructed.

Here, as the transparent conductive film, a NESA film which is a transparent conductive film of tin oxide or an ITO film which is a transparent conductive film of indium oxide can be used.
A TO film may be directly deposited on a predetermined portion, or a sheet-like film formed by depositing an ITO film on, for example, a transparent member may be used.

In the present invention, the display section includes a pair of substrates disposed to face each other and a liquid crystal element sealed between the pair of substrates.
It is preferable to be provided integrally on the substrate side facing the light source.

According to the present invention, since the transparent conductive film is provided between the display unit and the driving circuit and the light source, noise can be removed, and a malfunction of the driving circuit and image noise due to the noise can be eliminated. In addition, it is easy to manufacture since it can be integrally formed by vapor deposition on a substrate. In addition, since the substrate and the transparent conductive film are integrated, no special mounting structure is required, and the device can be simplified and reduced in weight.

In the present invention, on the light source side of the display unit, a surface light source forming member that converts a point or linear light source into a surface light source and supplies the surface light source to the display unit is disposed. It may be provided.

Here, the surface light source forming member includes a diffusion plate of a direct type backlight device and a light guide of an edge light type backlight device. When provided on the diffusion plate, it may be provided on either the upper surface or the lower surface thereof,
When it is provided on the light guide, it is preferably provided on the upper surface thereof. In any case, the vapor deposition may be performed directly to form an integral type, or a vapor-deposited transparent sheet member may be attached.

According to the present invention, since the transparent conductive film is provided between the display unit and the driving circuit and the light source, the noise can be removed, and the driving circuit malfunctions due to the noise and the image noise can be reduced. In addition, when the surface light source forming member is formed of a resin diffusion plate disposed above the fluorescent tube serving as the back light source, the diffusion plate is charged with the emission of the fluorescent tube. Therefore, it is possible to prevent dust from adhering to the diffusion plate. Further, when the transparent conductive film is deposited on the sheet member, the transparent sheet member is a separate member from the surface light source forming member or the like, so that even if the transparent conductive film is damaged, it can be easily replaced.

In the present invention, the surface light source forming member may include a reflector for reflecting a light beam incident on the display unit, and the transparent conductive film may be provided on the reflector.

According to the present invention, since the transparent conductive film is provided between the display unit and the driving circuit and the light source, noise can be removed, and malfunction of the driving circuit due to the noise can be prevented. be able to.

A display device according to the present invention comprises: a light source; a display unit for forming an optical image from a light beam emitted from the light source in accordance with image information; a driving circuit for driving a pixel electrode constituting the display unit; A display device comprising: a light source and a control board for driving and controlling at least one of the drive circuit, wherein a display unit and at least a part of the drive circuit are covered between the display unit and the drive circuit and the control board. A transparent conductive film is provided, and the transparent conductive film is electrically connected to a frame ground of the display device.

According to the present invention, since the transparent conductive film has very good conductivity, the noise generated from the control substrate is absorbed, and the noise is emitted by connecting the transparent conductive film to FG (frame ground). can do. Therefore, noise does not reach the drive circuit directly or indirectly via the scan electrode or the data electrode of the display portion, and malfunction of the drive circuit and image noise can be prevented. Also,
Since the display unit is covered with the transparent conductive film, the light emitted from the light source to the display unit is not obstructed.

In the present invention, the display section includes a pair of substrates arranged to face each other and a liquid crystal element sealed between the pair of substrates.
It is preferable to be provided integrally on the substrate side facing the front control substrate.

According to the present invention, since the transparent conductive film is provided between the display unit and the drive circuit and the control substrate, noise can be removed, and the drive circuit malfunctions and the image due to the noise can be eliminated. In addition to being able to prevent noise, it is easy to manufacture because it is integrated if it is formed by vapor deposition on a substrate.

In the present invention, the transparent conductive film and the control substrate may be electrically connected by grounding means.

In the present invention, the display section may be housed in a case having a metal frame, and the transparent conductive film and the metal frame may be electrically connected by a grounding means. The grounding means is configured to include a conductive member having flexibility, and the conductive member preferably has one end electrically connected to the transparent conductive film and the other end in contact with the metal frame, Further, the conductive member may be fixed by fixing means for holding and fixing the constituent members of the display device including the display unit in the metal frame.

According to the present invention, since the transparent conductive film is electrically connected by the grounding means, noise absorbed by the transparent conductive film is emitted to the control board or the metal frame by the grounding means. In addition to reliably preventing drive circuit malfunctions and image noise due to noise,
The structure of the grounding means is simple, and mounting is easy.
Further, the conductive member can be reliably brought into contact with the metal frame by the fixing means.

Here, the conductive member is preferably formed of a copper foil or a rubber member, but other members and other configurations may be used as long as a similar effect can be obtained.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

(1) Configuration of Display Device As shown in FIG. 1, the display device 11 includes a liquid crystal panel 30 serving as a display unit, a backlight device 40 serving as a back light source of the liquid crystal panel 30, and a liquid crystal panel 30. An outer case 6 comprising a display control board 50 for controlling displayed images and the like, a front case 61 which is a metal frame accommodating and integrating them, and a back case 62 made of plastic.
0.

The liquid crystal panel 30 includes a liquid crystal display panel 31 for modulating a light beam emitted from a light source, and a liquid crystal display panel 3.
The liquid crystal display panel 31 includes a panel shield frame 32 that covers an outer peripheral portion of the liquid crystal display panel 1 and a diffusion plate 33 that is disposed on a back surface of the liquid crystal display panel 31.

The liquid crystal display panel 31 includes a pair of substrates 31A and 31B made of glass or the like, and these substrates 31A and 31B.
31B and a liquid crystal sealed via a seal member.

In this liquid crystal display panel 31, one end of one substrate 31A in the longitudinal direction is connected to the other substrate 31B.
And one end in the width direction of the other substrate 31B projects outside the one substrate 31A, and the overlapped portions serve as display areas (display portions) of the liquid crystal display panel 31. ing.

These projecting portions are provided with IC mounting areas A and B, respectively, and driver ICs 35 and 36 (driving circuits) are mounted in the IC mounting areas A and B, respectively. Such a driver IC 35 is mounted on the substrate 31
When the IC 36 is mounted on the substrate 31B, an ACF (Anisotropic Conductive Film) is attached to the driver ICs 35 and 36 and the substrate 31A, although not shown.
This is performed by heating and pressing the ACF in a state sandwiched between the ACF and the ACF.

The display area includes a scanning signal driving circuit and a data signal driving circuit. These circuits include, for example, a plurality of scanning lines provided on one substrate 31A and the scanning lines provided on the other substrate 31B. A plurality of data lines are formed so as to intersect with. Further, a pixel electrode is connected to the scanning line, and based on signals applied to the scanning line and the data line, a TFD (Thin Film Diod) as a switching element is provided.
e) The display operation is controlled by switching the liquid crystal to a display state, a non-display state, or an intermediate state by the element.

The panel shield frame 32 is for preventing the influence of EMI (electromagnetic interference) on the liquid crystal display panel 31 and is formed in a frame shape by bending or punching a metal plate. An opening 32A for exposing the display surface of the liquid crystal display panel 31 is provided inside. The panel shield frame 32 is integrated with the liquid crystal display panel 31 with the diffusion plate 33 interposed therebetween, and is incorporated in a state of being in contact with a metal front case 61 constituting the outer case 60.

The diffusion plate 33 diffuses the light beam from the backlight device 40 and irradiates the liquid crystal display panel 31 with the light beam.
The light beam emitted from the linear light source of the backlight device 40 is almost uniformly converted into a surface light source. The light beam is formed into a rectangular plate shape corresponding to the display surface shape of the liquid crystal display panel 31 from a milky white plastic material added with a diffusing agent. ing.

The backlight device 40 includes a backlight body 45 and a heat conducting plate 46. The backlight body 45 includes a fluorescent tube 4 serving as a light emitting unit bent in a W shape so as to extend over substantially the entire back surface of the liquid crystal display panel 31.
A reflector 42 disposed on the back of the fluorescent tube 41 to reflect light emitted from the fluorescent tube 41 to the opposite side of the liquid crystal display panel 31 and directing the light toward the liquid crystal display panel 31; And a backlight substrate 43 for supplying power to the terminal portion 41A.

The heat guide plate 46 is formed by bending a metal plate having a high thermal conductivity, for example, a metal plate such as copper or aluminum. Specifically, a rectangular heat transfer portion 46A closely attached to the back surface of the reflection plate 42, and the heat transfer portion 46A
And a contact portion 46C connected via a bent portion 46B. The contact portion 46C is a side piece 61B of the front case 61.
Contacting the inner surface. Thereby, the reflection plate 42 and the front case 61 are connected, and a heat conduction path for transmitting heat from the backlight device 40 to the front case 61 is formed.

The outer case 60 is made of a metal front case 6.
1, and a plastic back case 62. The front case 61 is formed in a frame shape by bending a metal plate, and an opening 61A for exposing the display surface of the liquid crystal display panel 31 is formed therein. I have.

The back case 62 is formed in a box shape by injection molding of a transparent plastic, and is fitted and attached to the outside of the front case 61.

The display control board 50 is, as shown in FIG.
It is configured by mounting various circuit elements (circuit components) on a substrate main body 51. The substrate main body 51 includes a power supply circuit section 55 and an image control circuit 56.

The power supply circuit section 55 includes a transformer 540, capacitors 541 and 542, and the like. The image control circuit 56 includes a connector 521, an auxiliary CPU 522, an image control IC 523, and a CGROM (Character Gen).
eater Read Only Memory) 5
26. Firmware ROM (Read Only Memo)
ry) 525 and the like.

The fluorescent tube 41 and the terminal portion 41A
The transformer 540 and the like are noise sources N.

(2) First Embodiment A first embodiment of the present invention will be described with reference to FIGS.

In this embodiment, in the display device 11,
An ITO (Indium Tin Oxides) film 20, which is a transparent conductive film, is provided below the liquid crystal panel 30 (backlight side).

That is, as shown in FIG. 3, a driver IC 36 of the liquid crystal panel 30 and a terminal portion 41A serving as a light source are provided.
And / or the power supply circuit 55, the liquid crystal panel 3
0 display area on the lower surface of the substrate 31B and the driver IC 3
The ITO film 20 is deposited over a region corresponding to 6 by vacuum kiln deposition or the like, and is provided integrally with the substrate 31B. Therefore, the display area of the liquid crystal panel 30 and the driver IC 36 are covered with the ITO film 20. One end of a copper foil 26, which is a conductive member constituting the grounding means 15, is attached to the surface of the ITO film 20 with a conductive adhesive or a conductive tape. It is bent and is in contact with the panel shield frame 32. Although not shown, the panel shield frame 32 is in contact with a metal front case 61. When attaching one end of the copper foil 26 of the grounding means 15, a part of the polarizing plate 21 is scraped off and attached to that part. A polarizing plate 21 is provided outside the ITO film 20, and the polarizing plate 21 is also provided on the surface of the substrate 31A.

[Effects of the First Embodiment] According to the above embodiment, the following effects can be obtained.

1) On the lower surface of the substrate 31B of the liquid crystal panel 30, an extremely conductive ITO film 20
Is provided, the noise emitted from the noise source N is absorbed by the ITO film 20, and the noise is
A metal front case 61 from the copper foil 26 of the grounding means 15 provided on the TO film 20 via the panel shield frame 32
Therefore, noise does not reach the drive circuit directly or indirectly via the scan electrodes and data electrodes of the liquid crystal panel, and malfunction of the drive circuit and image noise can be prevented. Further, since the display area is covered with the transparent conductive film, the light emitted from the light source to the display area is not obstructed.

2) Since the ITO film 20 is deposited over the entire lower surface of the substrate 31B of the liquid crystal panel 30 by vacuum kiln deposition or the like and is integrally formed, it is easier to manufacture than when it is formed by a separate member. In addition, a structure for fixing another member is not required, so that the device can be simplified and reduced in weight.

(3) Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, the ITO is directly provided below the substrate 31B (backlight side) in the first embodiment.
While the film 20 is deposited, the ITO film 20 is deposited on the polarizing plate 21 provided integrally with the substrate 31B. When attaching one end of the copper foil 26 of the grounding means 15, it may be attached directly to the ITO film 20. Also,
Since the difference is only that the positions of the ITO polarizing plate 21 and the ITO film 20 are changed, detailed description is omitted.

[Effects of the Second Embodiment] The second embodiment as described above
According to the embodiment, in addition to the same effects as 1) and 2) of the first embodiment, 3) When attaching one end of the copper foil 26 of the grounding means 15, if it is attached directly to the ITO film 20, It can be easily installed at any position, and it is not necessary to cut off a part of the polarizing plate 21, so that the installation is easy.

(4) Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG.

In this embodiment, the ITO film 20 is deposited below the liquid crystal panel 30 in the first and second embodiments. 33 is formed by vapor deposition on the upper surface.

In this case, the grounding means 25 has a configuration in which the rubber 17 which is a conductive member is disposed on the upper end surface of the diffusion plate 33, and is sandwiched between the panel shield frame 32 and the diffusion plate 33. The panel shield frame 32 is in contact with the front case 61 made of metal, so that noise is transmitted from the diffusion plate 33 to the ITO film 20 and the panel shield frame 32.
Through the front case 61.

[Effect of Third Embodiment] The third embodiment described above
According to the embodiment, in addition to the same effects as 1) and 2) of the first embodiment, 4) Since the ITO film 20 is integrally formed on the upper surface of the diffusion plate 33, the conductive rubber 17 enables easy electrical connection with the panel shield frame 32. Since the panel shield frame 32 is in contact with the metal front case 61, the ITO film 20 can be easily grounded. Malfunction of the drive circuit due to noise can be prevented.

(5) Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIG.

In this embodiment, the sheet member 22 formed by evaporating the ITO film 20 on the upper surface of the diffusion plate 33 and the ITO film 20 on the transparent sheet surface in the third embodiment is used. Is provided in close contact with the lower surface of the diffusion plate 33. Note that the ITO film 20 is formed on the light source facing surface side of the transparent sheet.

In this case, one end of the copper foil 26 of the grounding means 15 is adhered to the end of the ITO film 20 and the other end is, for example, an edge 61D of the front case 61 as shown in FIG. And is fixed by a screw 28 as a fixing member.

[Effects of the Fourth Embodiment] According to the fourth embodiment described above, in addition to the same effects as 1) of the first embodiment, 5) the lower surface of the diffusion plate 33 ITO film 2 on the transparent sheet surface
Since the sheet member 22 formed by vapor-depositing 0 is adhered, even if the diffusion plate 33 is formed of a resin that easily carries static electricity, it can be prevented from being charged due to light emission of the fluorescent tube 41, and Thus, it is possible to prevent dust from adhering to the diffusion plate 33 and the sheet member 22. Also, in the unlikely event that I
Even if the TO film 20 is damaged, it can be easily replaced.

(6) Fifth Embodiment Next, a fifth embodiment of the present invention will be described with reference to FIGS.

This embodiment is different from the above embodiments in that the backlight device 40 as the back light source of the liquid crystal panel 30 is used.
Is a device using a so-called direct backlight, whereas a so-called edge-light type backlight device 70 is used.

This backlight device 70 includes two fluorescent tubes 71 arranged on the back side of the liquid crystal panel and beside the liquid crystal panel, and a reflecting plate 75 bridged between these fluorescent tubes 71. A Fresnel prism 73 is superposed on the light guide 72 so that the emitted light has directivity. In addition, a reflection plate 74 is provided on the light exit surface side of the light guide 72, and the ITO film 20 is deposited on the reflection plate 74. The reflection plate 74 is a half mirror, and reflects a light beam incident from the display side of the liquid crystal panel when the light source is turned off, and forms an optical image based on the reflected light beam. On the other hand, when the light source is turned on, the light from the light source is transmitted through the reflection plate, and an optical image is formed based on the transmitted light flux.

According to the fifth embodiment described above, 6) since the ITO film 20 is deposited on the upper surface of the reflector 74, the ITO film 2 is provided between the liquid crystal panel 31 and the reflector 74.
It is not necessary to provide a transparent plate on which 0 is vapor-deposited, so that the structure becomes simple and the mounting becomes easy.

(7) Modifications of Embodiment The present invention is not limited to the above-described embodiments, but includes the following modifications.

In each of the above embodiments, the ITO film 20 as the transparent conductive film is in contact with the front case 61 as a metal frame via the panel shield frame 32 by the grounding means 15 to be connected to the frame ground. However, a configuration may be used in which the ITO film 20 is electrically connected to the display control substrate 50 by a grounding means and connected to the frame ground.

In each of the above embodiments, the backlight device 4
0 is composed of the backlight main body 45 and the heat conducting plate 46, but is not limited thereto, and a unit in which both 45 and 46 are incorporated in advance may be used.

In each of the above embodiments, the fluorescent tube 41 used in the backlight device 40 is W-shaped. However, a fluorescent tube of any shape such as a U-shaped tube or a straight tube may be used. Further, a plurality of them or a combination thereof may be used, and the present invention can be applied to any of them.

In addition, the specific structure, shape, and the like when implementing the present invention may be other structures and the like as long as the object of the present invention can be achieved.

[0066]

According to the above-described display device, since the transparent conductive film has extremely good conductivity, noise generated from the light source and / or the power supply circuit is absorbed, and the transparent conductive film is formed by the F.
By connecting to G (frame ground), noise can be emitted. Therefore, it is possible to prevent malfunction of the drive circuit and image noise due to noise.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a display device according to a first embodiment of the present invention.

FIG. 2 is a perspective view for explaining a structure of a display control board in the embodiment.

FIG. 3 is a longitudinal sectional view showing details of the embodiment.

FIG. 4 is a longitudinal sectional view showing a second embodiment according to the present invention.

FIG. 5 is a longitudinal sectional view showing a third embodiment according to the present invention.

FIG. 6 is a longitudinal sectional view showing a fourth embodiment according to the present invention.

FIG. 7 is a perspective view showing a modification of the grounding means of the present invention.

FIG. 8 is a perspective view of a backlight device showing a fifth embodiment according to the present invention.

FIG. 9 is a sectional view showing a main part of a fifth embodiment according to the present invention.

DESCRIPTION OF SYMBOLS 11 Display device 15, 25 Grounding means 20 ITO film as transparent conductive film 22 Sheet member 26 Copper foil as conductive member 30 Liquid crystal panel 31 Liquid crystal display panel 31A, 31B Pair of substrates 35, 36 Driver IC Reference Signs List 40 backlight device as light source device 41 fluorescent tube (light source) 41A terminal portion 50 display control board 60 outer case 61 front case 62 back case

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadashi Akatsu 3-3-5 Yamato, Suwa-shi, Nagano F-term in Seiko Epson Corporation (reference) 2H089 HA18 HA40 QA10 2H091 FA14Z FA41Z FC02 FD01 FD13 GA02 GA03 GA11 LA07 LA08 LA11 2H092 GA64 JB79 NA11 NA14 NA30 5G435 AA16 BB12 CC09 EE05 EE37 GG33 GG34 HH12

Claims (11)

[Claims] 1. A display device comprising: a light source; a display unit that forms an optical image of a light beam emitted from the light source in accordance with image information; and a driving circuit that drives a pixel electrode included in the display unit. A transparent conductive film that covers the display unit and at least a part of the drive circuit is provided between the display unit and the driving circuit and the light source, and the transparent conductive film is connected to a frame ground of the display device. A display device which is electrically connected. 2. The display device according to claim 1, wherein the display unit includes a pair of substrates disposed to face each other, and a liquid crystal element sealed between the pair of substrates. A display device, which is provided integrally on a substrate side of the pair of substrates that is arranged to face the light source. 3. The display device according to claim 1, wherein a surface light source forming member that converts a point or linear light source light into a surface light source and supplies the surface light source to the display unit is disposed on the light source side of the display unit. A display device, wherein the transparent conductive film is provided on the surface light source forming member. 4. The display device according to claim 3, wherein the transparent conductive film is formed by vapor deposition on a surface of a transparent sheet member that is in close contact with the surface light source member. 5. The display device according to claim 3, wherein the surface light source-forming member includes a reflector for reflecting a light beam incident on the display unit, and the transparent conductive film is provided on the reflector. A display device characterized by the above-mentioned. 6. A light source, a display unit for forming an optical image of a light beam emitted from the light source in accordance with image information, a driving circuit for driving a pixel electrode forming the display unit, the light source and the driving unit A control board for driving and controlling at least one of the circuits, wherein the display unit and the drive circuit and the control board,
A display device, comprising: a transparent conductive film that covers the display portion and at least a part of the drive circuit; and the transparent conductive film is electrically connected to a frame ground of the display device. 7. The display device according to claim 6, wherein the display unit includes a pair of substrates arranged to face each other and a liquid crystal element sealed between the pair of substrates, and the transparent conductive film is A display device, which is provided integrally on a substrate side of the pair of substrates that is disposed to face the control substrate. 8. The display device according to claim 6, wherein the transparent conductive film and the control substrate are electrically connected by grounding means. 9. The display device according to claim 1, wherein the display unit is accommodated in a case having a metal frame, and a ground is provided between the transparent conductive film and the metal frame. A display device electrically connected by means. 10. The display device according to claim 9, wherein the grounding means includes a conductive member having flexibility, and one end of the conductive member is electrically connected to the transparent conductive film. A display device, the other end of which is in contact with the metal frame. 11. The display device according to claim 10, wherein the conductive member is fixed by fixing means for holding and fixing a constituent member of the display device including the display unit in the metal frame. A display device characterized by the above-mentioned.