WO2020170498A1

WO2020170498A1 - Display device

Info

Publication number: WO2020170498A1
Application number: PCT/JP2019/040280
Authority: WO
Inventors: 義弘渡辺; 佳克今関; 陽一上條; 光一宮坂; 修一大澤
Original assignee: 株式会社ジャパンディスプレイ
Priority date: 2019-02-21
Filing date: 2019-10-11
Publication date: 2020-08-27
Also published as: JP2020134733A

Abstract

Provided is a display device capable of narrowing a frame in the peripheral region outside the display region.　The display device is provided with a first substrate, a polarizing plate, a second substrate, a cover material, an adhesive layer, and an electrode. The first substrate has a first insulating substrate and a plurality of pixels arranged in a matrix. The polarizing plate has a first surface facing the first substrate and a second surface opposite from the first surface; the polarizing plate overlaps the display region whereon the plurality of pixels is arranged. The second substrate has a second insulating substrate and is arranged between the first substrate and the first surface of the polarizing plate. The cover material faces the second surface of the polarizing plate and overlaps the display region and the peripheral region surrounding the display region. The adhesive layer bonds the polarizing plate and the cover material and is electrically conductive. The electrode is provided in the peripheral region and maintained at a given potential. The adhesive layer and the electrode are electrically connected to each other.

Description

Display device

The embodiment of the present invention relates to a display device.

In recent years, in a liquid crystal display device, a transparent conductive film provided on the surface of one substrate and an electrode having a ground potential provided on the other substrate are electrically connected by a conductive member such as a conductive paste from the viewpoint of preventing electrification. The technology connected to is known. Such a structure for preventing electrification is provided in the frame area around the display area, but further narrowing of the frame is required.

JP, 2005-11121, A Japanese Unexamined Patent Publication No. 2012-177895 JP, 2011-170200, A

One of the objects of the present disclosure is to provide a display device capable of narrowing a frame in a peripheral area outside a display area.

The display device according to one embodiment includes a first substrate, a polarizing plate, a second substrate, a cover member, an adhesive layer, and an electrode. The first substrate has a first insulating substrate and a plurality of pixels arranged in a matrix. The polarizing plate has a first surface facing the first substrate and a second surface opposite to the first surface, and overlaps the display area in which the plurality of pixels are arranged. The second substrate has a second insulating substrate and is arranged between the first substrate and the first surface of the polarizing plate. The cover member is provided at a position facing the second surface of the polarizing plate, and overlaps the display region and a peripheral region located around the display region. The adhesive layer adheres the polarizing plate and the cover member and has conductivity. The electrode is provided in the peripheral area and is maintained at a predetermined potential. The adhesive layer and the electrode are electrically connected.

According to the embodiment, it is possible to provide a display device capable of narrowing a frame in the peripheral area outside the display area.

FIG. 1 is a plan view showing a schematic configuration of the display device according to the first embodiment. FIG. 2 is a schematic perspective view in the vicinity of the mounting area of the display device according to the first embodiment. FIG. 3 is a schematic cross-sectional view of the display device taken along the line II in FIG. FIG. 4 is a schematic cross-sectional view of the display device taken along the line II-II in FIG. FIG. 5 is a diagram showing a schematic cross section of the display device according to the comparative example and the display device according to the first embodiment. FIG. 6 is a diagram showing a schematic appearance of the display device according to the comparative example and the display device according to the first embodiment. FIG. 7 is a diagram showing a schematic appearance when the display device according to the first embodiment is provided with a plurality of first electrodes. FIG. 8 is a plan view showing a schematic configuration of the display device according to the second embodiment. FIG. 9 is a schematic perspective view in the vicinity of the mounting area of the display device according to the second embodiment. FIG. 10 is a schematic cross-sectional view of the display device taken along the line III-III in FIG. FIG. 11 is a diagram showing a schematic cross section of the display device according to the comparative example and the display device according to the second embodiment.

Some embodiments will be described with reference to the drawings.

It should be noted that the disclosure is merely an example, and a person skilled in the art can easily think of an appropriate modification while keeping the gist of the invention, and is naturally included in the scope of the invention. Further, although the drawings may be schematically illustrated in comparison with the embodiments for the sake of clearer description, they are merely examples and do not limit the interpretation of the present invention. In each drawing, reference numerals may be omitted for the same or similar elements arranged successively. Further, in the present specification and the drawings, constituent elements that exhibit the same or similar functions as those described above with reference to the already-existing drawings are designated by the same reference numerals, and redundant detailed description may be omitted.

In each embodiment, a liquid crystal display device including a liquid crystal display element is disclosed. However, each embodiment does not prevent the application of each technical idea disclosed in each embodiment to another type of display device including a display element other than the liquid crystal display element. Examples of other types of display devices include a self-luminous display device having an organic electroluminescence (EL) display element, a Light Emitting Diode (LED) display element, an electronic paper type display device having an electrophoretic element, and a Micro device. A display device to which Electro Mechanical Systems (MEMS) is applied, a display device to which electrochromism is applied, or the like can be given.

[First Embodiment]
FIG. 1 is a plan view showing the appearance of a display device 1A according to the first embodiment. In one example, the first direction X, the second direction Y, and the third direction Z are orthogonal to each other, but may intersect at an angle other than 90°. The first direction X and the second direction Y correspond to the directions parallel to the main surface of the substrate forming the display device 1A, and the third direction Z corresponds to the thickness direction of the display device 1A. For example, the first direction X corresponds to the short side direction of the display device 1A, and the second direction Y corresponds to the long side direction of the display device 1A. In the present specification, it is assumed that there is an observation position for observing the display device 1A on the tip side of the arrow indicating the third direction Z, and XY defined by the first direction X and the second direction Y from this observation position. Looking toward a plane is called planar view.

The display device 1A includes a display panel 2, a flexible printed circuit board 3, an IC chip 4, and a circuit board 5.

The display panel 2 is, for example, a liquid crystal display panel, and includes a first substrate SUB1 having a first insulating substrate, a second substrate SUB2 having a second insulating substrate, and a liquid crystal layer LC described later. The display panel 2 includes a display area DA for displaying an image and a frame-shaped peripheral area SA surrounding the display area DA.

The first substrate SUB1 includes a first area A1 and a second area A2 arranged in the second direction Y. The second substrate SUB2 overlaps the first substrate SUB1 in the first area A1 and does not overlap the second area A2.

The display area DA is included in the first area A1. The peripheral area SA includes the second area A2. As will be described later, since the flexible printed circuit board 3 and the IC chip 4 are mounted in the second area A2, the second area A2 may be referred to as a mounting area. The flexible printed circuit board 3 and the IC chip 4 mounted on the second area A2 may be collectively referred to as electronic components.

The display area DA includes a plurality of pixels PX arranged in a matrix in the first direction X and the second direction Y. The pixel PX here indicates a minimum unit that can be individually controlled according to a pixel signal, and may be referred to as a subpixel. The pixel PX is, for example, a red pixel that displays red, a green pixel that displays green, a blue pixel that displays blue, or a white pixel that displays white.

The flexible printed circuit board 3 is mounted in the second area A2 and electrically connected to the circuit board 5. The IC chip 4 is mounted in the second area A2 and electrically connected to the circuit board 5 via the flexible printed circuit board 3. The IC chip 4 may be mounted on the flexible printed circuit board 3.

IC chip 4 has a built-in display driver DD. The display driver DD outputs a signal necessary for image display in the image display mode for displaying an image. For example, the display driver DD supplies a pixel signal to the plurality of pixels PX. In the example shown in FIG. 1, the IC chip 4 has a built-in touch controller TC. The touch controller TC controls a touch sensing mode for detecting the approach or contact of an object with the display device 1A.

The first substrate SUB1 includes the first electrode EL1 in the second area A2. In the example shown in FIG. 1, the first electrode EL1 is provided in the second area A2, but the first electrode EL1 may be provided in the peripheral area SA. Further, the first substrate SUB1 includes a plurality of second electrodes EL2 in the second region A2, as shown in FIG. 2 described later.

The first electrode EL1 is, for example, grounded via the flexible printed circuit board 3, but may be maintained at a predetermined potential. The predetermined potential is applied to the first electrode EL1 by a direct current having a ground potential or a fixed potential of several V or an alternating current having a predetermined amplitude. In the example shown in FIG. 1, the first electrode EL1 is arranged at one place on the first substrate SUB1, but the present invention is not limited to this, and the plurality of first electrodes EL1 are arranged on the first substrate SUB1. May be arranged at a plurality of positions (more specifically, on the peripheral area SA).

The plurality of second electrodes EL2 are electrically connected to the flexible printed circuit board 3 and the IC chip 4, for example.

The display device 1A includes a first polarizing plate PL1 adhered to a second substrate SUB2. The first polarizing plate PL1 overlaps the display area DA. As shown in FIG. 2 described later, the display device 1A also includes a second polarizing plate PL2 bonded to the first substrate SUB1. In the following description, the side of the second substrate SUB2 on the second region A2 side is referred to as a first side E1, and the side of the first polarizing plate PL1 on the second region A2 side is referred to as a second side E2. In this embodiment, the second side E2 overlaps the first side E1. The "side" includes a side surface (a surface extending in the Z direction) including the side.

The display device 1A includes a cover member CM that overlaps the display area DA and the peripheral area SA. The cover member CM can be formed of, for example, glass or transparent resin. The cover member CM is bonded to the first polarizing plate PL1 and the first substrate SUB1 by a conductive adhesive layer AD3, as shown in FIG. 2 described later.

Next, the structure of the second area A2 (the structure of the mounting area) will be described with reference to FIG. FIG. 2 is a schematic perspective view of the display device 1A in the second area A2. FIG. 2 also shows a schematic cross-sectional view of the display device 1A.

The first substrate SUB1 and the second substrate SUB2 are attached to each other by an annular seal material SE that surrounds the display area DA. The liquid crystal layer LC is sealed in the region inside the sealing material SE.

The first polarizing plate PL1 has a first surface facing the second substrate SUB2 (first substrate SUB1) and a second surface opposite to the first surface, and the first adhesive layer AD1 forms the second substrate. It is glued to SUB2. The second polarizing plate PL2 is adhered to the first substrate SUB1 by the second adhesive layer AD2. The polarization axes of the first polarizing plate PL1 and the second polarizing plate PL2 are, for example, orthogonal to each other.

The cover member CM is provided at a position facing the upper surface (second surface) of the first polarizing plate PL1 and is bonded to the first polarizing plate PL1 and the first substrate SUB1 by a conductive adhesive layer AD3 having conductivity. .. More specifically, the cover member CM is adhered to the first polarizing plate PL1 in the first area A1 and to the first substrate SUB1 in the second area A2 by the conductive adhesive layer AD3.

As the conductive adhesive layer AD3, for example, an adhesive containing conductive metal particles can be used. Further, the sheet resistance value of the conductive adhesive layer AD3 is preferably similar to the sheet resistance value of ITO (Indium Tin Oxide) or the like, and specifically, it is 10 ⁸ to 10 ¹⁰ [Ω/□]. preferable. In this embodiment, the first adhesive layer AD1 and the second adhesive layer AD2 do not have conductivity.

The first side E1 of the second substrate SUB2 on the second region A2 side and the second side E2 of the first polarizing plate PL1 on the second region A2 side overlap, and these two sides E1 and E2 are the first adhesive layer. The side of the AD1 on the second region A2 side and the side of the sealant SE on the second region A2 side also overlap.

The first electrode EL1 and a plurality of second electrodes EL2 are provided in the second region A2 of the first substrate SUB1.

The upper surfaces of the plurality of second electrodes EL2 are covered with an anisotropic conductive film. As the anisotropic conductive film, for example, a thermosetting resin containing conductive metal particles can be used. The flexible printed circuit board 3 and the IC chip 4 are connected to the second electrode EL2 via an anisotropic conductive film. As a result, each circuit of the flexible printed circuit board 3 and the IC chip 4 is electrically connected to the second electrode EL2.

Each circuit that is electrically connected to the plurality of second electrodes EL2 is covered with an insulating member 11 and insulated from the conductive adhesive layer AD3. As the insulating member 11, for example, an oxide film such as SiO or a nitride film such as SiN can be appropriately used. Alternatively, the insulating member 11 may be formed of, for example, an organic material. When the wirings that lead to the plurality of second electrodes EL2 are arranged on the upper surface of the first substrate SUB1, the wirings are also covered by the insulating member 11 in addition to the circuits described above.

In the present embodiment, unlike the second electrode EL2, the first electrode EL1 is not insulated from the conductive adhesive layer AD3 by the insulating member 11. In addition, here, the case where each circuit that conducts with the plurality of second electrodes EL2 is covered with one insulating member 11 is described, but the present invention is not limited to this, and each circuit that conducts with the plurality of second electrodes EL2. The circuit may be individually covered with a plurality of insulating members 11.

FIG. 3 is a schematic sectional view of the display device 1A taken along the line II in FIG.

The conductive adhesive layer AD3 is applied over the entire area of the inner surface of the cover member CM. Therefore, in the first area A1, the conductive adhesive layer AD3 continuously covers, for example, the upper surface of the first polarizing plate PL1 to bond the cover member CM and the first polarizing plate PL1 to each other, and in the second area A2. Covers the upper surface of the first substrate SUB1 and the first electrode EL1 to bond the cover member CM and the first substrate SUB1.

In the present embodiment, the conductive adhesive layer AD3 is used not only for the adhesion between the cover member CM and the first polarizing plate PL1 and the adhesion between the cover member CM and the first substrate SUB1, but also for the electrostatic discharge caused by the charging of the second substrate SUB2. It also has a role of protecting various circuits from (ESD). That is, since the conductive adhesive layer AD3 has conductivity and is electrically connected to the first electrode EL1 of the ground potential provided in the second region A2 of the first substrate SUB1, the second The electric charge that tends to be charged on the substrate SUB2 can be released through the first electrode EL1 and the flexible printed circuit board 3 (the wiring that connects the first electrode EL1 and the flexible printed circuit board 3).

FIG. 4 is a schematic sectional view of the display device 1A taken along the line II-II in FIG.

As described in FIG. 3, since the conductive adhesive layer AD3 is applied over the entire area of the inner surface of the cover member CM, the conductive adhesive layer AD3 is also applied in the first area A1 in the cross section shown in FIG. For example, the cover member CM and the first polarizing plate PL1 are adhered to each other while continuously covering the upper surface of the first polarizing plate PL1. On the other hand, in the second area A2, the conductive adhesive layer AD3 covers the upper surface of the first substrate SUB1 and the insulating member 11 to bond the cover member CM and the first substrate SUB1.

Next, the effects of the display device 1A according to the present embodiment will be described using a comparative example. It should be noted that the comparative example is intended to explain some of the effects that the display device 1A according to the present embodiment can achieve, and excludes configurations common to the comparative example and the present embodiment from the scope of the present invention. Not a thing.

FIG. 5 shows schematic cross sections of the display device 100 according to the comparative example and the display device 1A according to the present embodiment. FIG. 6 shows a schematic external appearance of the display device 100 according to the comparative example and a schematic external view of the display device 1A according to the present embodiment. FIG. 7 shows a schematic appearance when the display device 1A according to the present embodiment is provided with a plurality of first electrodes EL1.

In the display device 100 according to the comparative example, as shown in FIG. 5A, a transparent conductive film 12 such as ITO or ATO (Antimony Tin Oxide) is provided as a resistance film on the upper surface of the second substrate SUB2. This is different from the display device 1A according to the present embodiment in that a conductive member 13A (conductive paste) that connects the transparent conductive film 12 and the first electrode EL1 is provided.

In the display device 100 according to the comparative example, a first electrode EL1 that is grounded via the flexible printed circuit board 3 is provided in the second area A2 of the first substrate SUB1, and the first electrode EL1 and the second substrate EL1 are grounded. By electrically connecting to the transparent conductive film 12 provided on the upper surface of the SUB2 via the conductive member 13A, the electric charge to be charged on the second substrate SUB2 is released through the first electrode EL1 and the flexible printed circuit board 3. According to this, it is possible to suppress the occurrence of various problems (for example, the occurrence of display unevenness) due to the electrostatic discharge of the second substrate SUB2.

On the other hand, in the display device 100 according to the comparative example, a space for applying the conductive member 13A is required on the transparent conductive film 12 provided on the upper surface of the second substrate SUB2, so that the frame is narrowed by the space. There is an inconvenience that you cannot do it.

On the other hand, in the display device 1A according to the present embodiment, as shown in FIG. 5B, the bonding for bonding the cover member CM and the first polarizing plate PL1 and the cover member CM and the first substrate SUB1. The conductive adhesive layer AD3 having conductivity is used as the agent, and the conductive adhesive layer AD3 covers the first electrode EL1 to electrically connect the conductive adhesive layer AD3 and the first electrode EL1 to each other, and thus the second substrate It is supposed that the electric charge to be charged in the SUB2 is released through the first electrode EL1 and the flexible printed circuit board 3.

According to this configuration, the space for applying the conductive member 13A, which was necessary in the display device 100 according to the comparative example, is not required, and therefore, the space, specifically, the distance shown in FIGS. The frame can be narrowed by d1 minutes.

Further, in the display device 100 according to the comparative example, it was necessary to provide the transparent conductive film 12 as a resistance film on the upper surface of the second substrate SUB2 in order to apply the conductive member 13A, but the display device according to the present embodiment. In the configuration of 1A, since it is not necessary to provide the transparent conductive film 12, the manufacturing process (film forming process) can be reduced by one process as compared with the display device 100 according to the comparative example.

In the configuration of the display device 1A according to the present embodiment, the adhesive for bonding the cover member CM and the first polarizing plate PL1 and the cover member CM and the first substrate SUB1 is a conductive adhesive layer having conductivity. Since AD3 is used, it is sufficient to provide the conductive adhesive layer AD3 during the process of bonding the cover member CM in the display device 100 according to the comparative example, and it is possible to obtain the effect that no new process is required.

Further, it is possible to omit the process of applying the conductive member 13A, which is necessary in the display device 100 according to the comparative example, and it is possible to further reduce the manufacturing process as compared with the display device 100 according to the comparative example. Becomes

Further, in the display device 1A according to the present embodiment, since the conductive adhesive layer AD3 is applied over the entire area of the inner surface of the cover member CM, the display device 1A (for example, the first substrate SUB1 and the first polarized light). It is also possible to cover the entire side surfaces of the plate PL1 and the second substrate SUB2) with the conductive adhesive layer AD3. The conductive adhesive layer AD3 is electrically connected to the first electrode EL1 which is grounded via the flexible printed circuit board 3, and the conductive adhesive layer AD3 is, as described above, the entire circumference of the side surface of the display device 1A. Therefore, the display device 1A according to the present embodiment can also obtain the effect of being less likely to be affected by charging from the side surface.

Further, in the display device 1A according to the present embodiment, the conductive adhesive layer AD3 is applied over the entire area of the inner surface of the cover member CM, so that the first conductive layer is grounded via the flexible printed circuit board 3. Wherever the electrode EL1 is provided on the first substrate SUB1 (on the peripheral area SA), the conductive adhesive layer AD3 and the first electrode EL1 can be electrically connected. According to this, the effect that the degree of freedom in designing the display device 1A can be increased can be obtained. Specifically, as shown in FIG. 7, a plurality of first electrodes EL1 are provided in a second area A2 on which the flexible printed circuit board 3 and the IC chip 4 are mounted, and a peripheral area SA other than the second area A2. It is also possible to provide each of them.

[Second Embodiment]
Next, a second embodiment will be described. The configurations and effects not particularly mentioned are the same as those in the first embodiment.

FIG. 8 is a plan view showing a schematic appearance of the display device 1B according to the second embodiment.

The display device 1B is different from the display device 1A according to the first embodiment in that the display device 1B includes an optical adhesive member AD4 protruding in the second area A2 and a conductive member 13B in the second area A2 of the first substrate SUB1. To do.

FIG. 9 is a schematic perspective view of the display device 1B. In FIG. 9, as in FIG. 2, a schematic cross section of the display device 1B is also shown.

In the second area A2 of the first substrate SUB1, a conductive member 13B that is in contact with the first electrode EL1 that is grounded via the flexible printed circuit board 3 is provided. The conductive member 13B may be provided on the first electrode EL1 or may be provided so as to cover the first electrode EL1. The conductive member 13B is insulated by the insulating member 11 from each circuit that is electrically connected to the plurality of second electrodes EL2 provided in the second region A2 of the first substrate SUB1.

The conductive member 13B is adhered to the optical adhesive member AD4. According to this, the optical adhesive member AD4 and the first electrode EL1 are electrically connected via the conductive member 13B. One of the side surfaces of the conductive member 13B faces the side surface of the second substrate SUB2 on the second region A2 side. Note that in FIG. 9, one of the side surfaces of the conductive member 13B is in contact with the side surface of the seal material SE, the second substrate SUB2, the first adhesive layer AD1 and the first polarizing plate PL1 on the second region A2 side. Although illustrated, the conductive member 13B is not limited to this, and the conductive member 13B may not be in contact with each of these layers.

The length (thickness) of the conductive member 13B in the third direction Z is smaller than the total thickness of the second substrate SUB2, the liquid crystal layer LC (sealing material SE), the first adhesive layer AD1 and the first polarizing plate PL1. Alternatively, they are preferably the same. The length (width) of the conductive member 13B in the second direction Y is preferably about the same as the width of the first electrode EL1 from the viewpoint of narrowing the frame.

The cover member CM is adhered to the first polarizing plate PL1 by an optical adhesive member AD4 having conductivity.

The sheet resistance value of the optical adhesive member AD4 is preferably the same as the sheet resistance value of ITO or the like, and specifically, it is preferably 10 ⁸ to 10 ¹⁰ [Ω/□]. The optical adhesive member AD4 is provided on the upper surface of the first polarizing plate PL and the upper surface of the conductive member 13B using any method of optical adhesion such as OCA (Optical Clear Adhesive) or OCR (Optical Clear Resin).

FIG. 10 is a schematic sectional view of the display device 1B taken along the line III-III in FIG.

The optical adhesive member AD4 not only adheres the cover member CM and the first polarizing plate PL1 but also has a role of protecting various circuits from static electricity charged on the second substrate SUB2. That is, the optical adhesive member AD4 has conductivity and is electrically connected to the first electrode EL1 at the ground potential provided in the second region A2 of the first substrate SUB1 via the conductive member 13B. Therefore, the electric charge that is about to be charged on the second substrate SUB2 can be released through the first electrode EL1 and the flexible printed circuit board 3 (the wiring that connects the first electrode EL1 and the flexible printed circuit board 3). it can.

FIG. 11 shows schematic cross sections of the display device 100 according to the comparative example and the display device 1B according to the present embodiment. Since the display device 100 according to the comparative example has the same configuration as the display device 100 according to the comparative example shown in FIG. 5A, detailed description thereof will be omitted here.

In the display device 1B according to the present embodiment, as shown in FIG. 11B, it is necessary to provide the conductive member 13B that comes into contact with the first electrode EL1 that is grounded via the flexible printed circuit board 3, but By providing the optical adhesive member AD4 having the conductivity that allows the conductive member 13B to be adhered and the cover member CM and the first polarizing plate PL1 to be adhered to each other, the conductive member is provided as in the display device 100 according to the comparative example. A space for applying 13A is not necessary, and the frame can be narrowed by the space, specifically, the distance d1 shown in FIG.

Further, in the display device 100 according to the comparative example, it was necessary to provide the transparent conductive film 12 as a resistance film on the upper surface of the second substrate SUB2 in order to apply the conductive member 13A, but the display device according to the present embodiment. In the configuration of 1B, since it is not necessary to provide the transparent conductive film 12, it is possible to reduce the manufacturing process by one process as compared with the display device 100 according to the comparative example.

Furthermore, in the configuration of the display device 1B according to the present embodiment, the adhesive for adhering the cover member CM and the first polarizing plate PL1 is the optical adhesive member AD4 having conductivity, so that the comparative example is concerned. The optical adhesive member AD4 may be provided during the process of attaching the cover member CM in the display device 100, and an effect that a new process is not required can be obtained.

According to at least one embodiment described above, it is possible to provide a display device capable of narrowing the frame of the peripheral area outside the display area.

As described above, all display devices that can be appropriately designed and modified by those skilled in the art based on the display devices described as the embodiments of the present invention are also included in the scope of the present invention as long as they include the gist of the present invention.

Various modifications are conceivable to those skilled in the art within the scope of the idea of the present invention, and it is understood that these modifications also belong to the scope of the present invention. For example, those skilled in the art appropriately add, delete, or change the design of each of the above-described embodiments, or add or omit steps or change the conditions of the present invention. As long as it has the gist, it is included in the scope of the present invention.

In addition, as for other operational effects brought about by the aspects described in the above-mentioned respective embodiments, those apparent from the description of the present specification or those which can be appropriately conceived by those skilled in the art are naturally brought about by the present invention. Is understood.

1A, 1B... Display device, 2... Display panel, 3... Flexible printed circuit board, 4... IC chip, 5... Circuit board, 11... Insulating member, 13B... Conductive member, A1... First area, A2... Second area , AD3... Conductive adhesive layer, AD4... Optical adhesive member, CM... Cover member, DA... Display area, E1... First side, E2... Second side, EL1... First electrode, EL2... Second electrode, PL1... 1 polarizing plate, SA... peripheral area, SUB1... first substrate, SUB2... second substrate.

Claims

A first substrate having a first insulating substrate and a plurality of pixels arranged in a matrix;
A polarizing plate having a first surface facing the first substrate and a second surface opposite to the first surface, and overlapping the display area in which the plurality of pixels are arranged;
A second substrate having a second insulating substrate and disposed between the first substrate and the first surface of the polarizing plate;
A cover member which is provided at a position facing the second surface of the polarizing plate and overlaps the display region and a peripheral region located around the display region;
A conductive adhesive layer for bonding the polarizing plate and the cover member,
An electrode provided in the peripheral region and maintained at a predetermined potential,
Equipped with,
A display device, wherein the adhesive layer and the electrode are electrically connected.
The adhesive layer is in contact with the electrode and electrically connected to the electrode,
The display device according to claim 1.
The adhesive layer is an adhesive containing conductive metal particles,
The display device according to claim 1.
Further comprising a conductive connecting member for connecting the adhesive layer and the electrode,
The adhesive layer and the electrode are electrically connected via the connection member,
The display device according to claim 1.
The adhesive layer is an optical adhesive member,
The display device according to claim 4.
Further comprising an electronic component that supplies a pixel signal to the plurality of pixels,
The peripheral area includes a mounting area for mounting the electronic component,
The electronic component mounted in the mounting area, at least a portion located on the mounting area is covered by an insulating member,
The display device according to claim 1.
A side of the polarizing plate on the mounting region side and a side of the second substrate on the mounting region side overlap with each other;
The display device according to claim 6.
The electrodes are provided in the mounting area and a peripheral area other than the mounting area,
The display device according to claim 6.
The sheet resistance value of the adhesive layer is any one of 10 8 to 10 10 [Ω/□],
The display device according to claim 1.