Display device

Abstract

A display device comprises a first substrate, a second substrate, a liquid crystal layer and a sealing conductive material, the liquid crystal layer and the sealing conductive material are clamped between the first substrate and the second substrate, a display area and a frame area surrounding the display area are formed, and the sealing conductive material surrounds and seals the liquid crystal layer in the frame area. The first substrate includes, on a first base material, a thin film transistor layer disposed in the display area; and a static electricity guide structure for guiding static electricity on the first substrate side to the second substrate, the static electricity guide structure being provided in the bezel region along at least one of the three sides of the display region so as to overlap with the sealing conductive material, and being connected to the sealing conductive material.

Description

Technical Field

[0001] The utility model relates to a display device. Background Art

[0002] Most current display devices are liquid crystal display devices, and thin film transistors (TFTs) are often used as control elements to control the direction of the liquid crystal in the liquid crystal display device. Such liquid crystal display devices are called thin film transistor liquid crystal display devices (TFT-LCDs), which control the flipping of liquid crystals and thus the transmittance by applying data signals to array pixels, and cooperate with color filter layers to display images.

[0003] However, during the transportation and use of such TFT-LCDs, static electricity will accumulate on the glass, which may be released inside the device and damage the components of the TFT-LCD, causing the damaged components to fail to function. For example, when static electricity is released on the side of the array substrate on which the thin film transistor array is disposed, it is easy to damage the components on the side of the array substrate, resulting in display abnormalities. Moreover, when static electricity is released in the border area of ​​the TFT-LCD, the components located in the border area of ​​the TFT-LCD are also easily damaged, causing water vapor in the environment to enter the TFT-LCD from the damaged components, which can also cause display abnormalities and reduce the life of the TFT-LCD.

[0004] Therefore, it is necessary to take electrostatic protection measures for the existing TFT-LCD. Utility Model Content

[0005] According to one aspect of the utility model, a display device includes a first substrate, a second substrate, and a liquid crystal layer and a sealing conductive material sandwiched between the first substrate and the second substrate, and a display area and a frame area surrounding the display area are formed, and the sealing conductive material surrounds and seals the liquid crystal layer in the frame area. The first substrate includes on the first substrate: a thin film transistor layer, which sets the display area; and an electrostatic guidance structure, which is used to guide static electricity implemented on the first substrate side to the second substrate, and in the frame area, the sealing conductive material is overlapped along at least one of the three sides of the display area and connected to the sealing conductive material.

[0006] The present invention has been made based on the above-mentioned problem. According to one aspect of the present invention, the electric charge accumulated in the display device can be released, and the elements of the display device can be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic plan view of a display device according to the first embodiment of the present disclosure.

[0008] Figure 2 It is a partial cross-sectional view of the display device according to the first embodiment of the present disclosure.

[0009] Figure 3 It is a schematic plan view of a display device according to the first embodiment of the present disclosure.

[0010] Figure 4 It is a schematic plan view of a first modified example of the display device according to the first embodiment of the present disclosure.

[0011] Figure 5 It is a schematic plan view of a second modified example of the display device according to the first embodiment of the present disclosure.

[0012] Figure 6 It is a schematic plan view of a display device according to a second embodiment of the present disclosure.

[0013] Figure 7 It is a schematic plan view of a display device according to a third embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. The described embodiments are only a part of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0016] [First embodiment]

[0017] like Figures 1 to 3As shown, a display device 100 involved in the first embodiment of the present disclosure is shown. The display device 100 includes an array substrate 10, a color filter substrate 20, a liquid crystal layer 30 and a sealing conductive material 40. The array substrate 10 and the color filter substrate 20 are arranged opposite to each other with the liquid crystal layer 30 sandwiched therebetween, and the display device 100 includes a display area D and a frame area F surrounding the display area D. In the frame area F, the sealing conductive material 40 is arranged between the array substrate 10 and the color filter substrate 20 and surrounds the liquid crystal layer 30, and the sealing conductive material 40 is arranged to surround the display area D. In addition, in the frame area F, a driving integrated circuit 3 for driving the thin film transistor layer 1 that controls the display area D and a driving signal line group 61 that provides a driving signal are formed on the array substrate 10 side.

[0018] The array substrate 10 includes a thin film transistor layer 1 in which a plurality of thin film transistors (not shown) are arranged in an array on a first substrate 11 in a display area D. The thin film transistor layer 1 is a thin film transistor array composed of a plurality of thin film transistors arranged in an array, and the thin film transistors can adopt an existing structure, for example, including a source, a drain, and a gate.

[0019] In addition, an electrostatic guiding structure is included in the frame region F of the array substrate 10 . The electrostatic guiding structure is disposed along at least one of the three sides of the display region D and overlaps with the sealing conductive material 40 .

[0020] The electrostatic guiding structure is used to guide the charges accumulated in the display device 100 to the color filter substrate 20 side for release, so as to protect the display device 100, especially the components on the array substrate 10 side from electrostatic damage. For example, the static electricity can be discharged from the second conductive layer 27 on the filter substrate 20 side to the ground, or can be discharged to the outside through a discharge structure (not shown) such as a tip discharge provided on the periphery of the filter substrate 20, or can be discharged through an existing electrostatic discharge structure.

[0021] The electrostatic guiding structure includes a first conductive layer 13, an insulating layer 15 and an electrostatic guiding layer 17 sequentially stacked on a first substrate 11. A contact hole H is formed in the insulating layer 15, and the electrostatic guiding layer 17 is electrically connected to the first conductive layer 13 via the contact hole H.

[0022] The first conductive layer 13 can choose to use any wiring that is not used for the display function and is originally set in the frame area F, for example, a dummy electrode wiring, a common signal line, and a low-potential signal line. However, it is not limited to this, and a dedicated electrostatic protection line can also be additionally provided. Preferably, the first conductive layer 13 is provided on a side close to the driving integrated circuit 3 and the driving signal line group 61, so that the charge accumulated inside the array substrate 10 is more easily guided to the first conductive layer 13. The first conductive layer 13 is electrically separated from the thin film transistor layer 1.

[0023] The insulating layer 15 may be a single insulating layer. However, it may also be a multi-layer insulating layer, for example Figure 2 The structure of the double insulating layer is shown as a stack of the first insulating layer 151 and the second insulating layer 152. In addition, the multi-layer insulating layer may also include at least one organic insulating layer and / or at least one inorganic insulating layer, which is not limited in the present application.

[0024] The electrostatic guiding layer 17 may be a transparent conductive oxide (TCO), such as tin oxide (SnO2), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO). In addition, the electrostatic guiding layer 17 only needs to be able to guide the static electricity on the array substrate 10 side to the color filter substrate 20 side, so the first conductive layer 13 can omit the lead portion that is led to the terminal portion 60.

[0025] In addition, a low potential may also be applied to any layer of the electrostatic guiding structure or the second conductive layer 27 .

[0026] like Figure 3 As shown, the first wiring 131 is illustrated as an example of the first conductive layer 13. The first wiring 131 is a non-operating wiring arranged on the side closest to the display area D, and an electrostatic guide layer 17 connected thereto is formed on the first wiring 131. The electrostatic guide layer 17 is composed of a plurality of electrostatic guide layers 17a, and the electrostatic guide layer 17a is formed in a circular shape and is connected to the first conductive layer 13 via the contact hole H.

[0027] The color filter substrate 20 includes a light shielding layer 23, a color filter layer 25, and a second conductive layer 27 stacked on a second base material 21. The light shielding layer 22 and the color filter layer 25 may have conventional structures. Figure 2 Although the color filter layer 25 is shown to include filters 251 to 253, the present application is not limited thereto and may include more than four filters, but may also include two or one filter. The second conductive layer 27 may be an electrode layer shared by a common electrode opposite to the thin film transistor layer 1 in the display area D, or may be an additional conductive layer independent of the common electrode. In addition, the second conductive layer 27 may be a transparent conductive oxide (TCO), such as tin oxide (SnO2), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), or may be a metal nanowire (NW).

[0028] The sealing conductive material 40 has conductivity, and is a structure in which conductive particles are mixed in the plastic frame. The sealing conductive material 40 is coated on the frame area F in a manner of surrounding the display area D to seal the liquid crystal layer 30. In addition, the sealing conductive material 40 is sandwiched between the array substrate 10 and the color filter substrate 20. Therefore, at the position overlapping the sealing conductive material 40, the electrostatic guide layer 17 on the array substrate 10 side and the second conductive layer 27 on the color filter substrate 20 side are connected via the sealing conductive material 40.

[0029] When the array substrate 10 is viewed from above, it is assumed that the formation area of ​​the sealing conductive material 40 is defined by the area between the inner boundary 40a and the outer boundary 40b, and the sealing conductive material 40 is formed between the inner boundary 40a and the outer boundary 40b, and the outer boundary 40b is farther from the side of the display area D than the inner boundary 40a. In the frame area F, the electrostatic guide layer 17 on the side of the array substrate 10 can be set at a position closer to the display area D than the outer boundary 40b, for example, at least a part of the electrostatic guide layer 17 is formed between the inner boundary 40a and the outer boundary 40b and the entire electrostatic guide layer 17 does not exceed the outer boundary 40b. In addition, for example, the electrostatic guide layer 17 can be formed on at least one of a plurality of wirings, such as the first wiring 131, the second wiring 132, and the third wiring 133. Thus, the display device 100, especially the elements on the side of the array substrate 10, can be protected from electrostatic damage, and water vapor can be inhibited from entering the inside of the display device 100 through the electrostatic guide layer 17.

[0030] In addition, as mentioned above Figure 3 The electrostatic guiding layer 17 is formed into a circular shape, but is not limited thereto, and its shape can be appropriately changed, such as an ellipse, a quasi-circle, a quasi-ellipse, etc. The display device 100 of this embodiment has the advantages of low process electrostatic risk and high process stability.

[0031] In addition, the length of the electrostatic guide layer 17 can be further increased, such as Figure 4 As shown, it is formed into a continuous pattern, Figure 5 As shown, it is constructed in a block shape.

[0032] exist Figure 4 In the example shown, for the electrostatic guiding layer 17, an electrostatic guiding layer 17b is used instead of Figure 3 In other words, in this example, the electrostatic guiding layer 17b is continuously formed on the insulating layer 15 and connected to the first wiring 131 via at least one contact hole H. However, it is not limited thereto, and it may be a continuous pattern only along one side of the display area D, or a continuous pattern along two adjacent sides of the display area D. According to the display device 100 of this example, the product has the advantages of high anti-static ability and low risk of electrostatic damage.

[0033] exist Figure 5 In the example shown, for the electrostatic guiding layer 17, a plurality of electrostatic guiding layers 17c are used instead of Figure 3 In other words, in this example, the shape of the electrostatic guidance layer 17a is changed, and the multiple electrostatic guidance layers 17c are configured as a rectangle, and are connected to the first wiring 131 via multiple contact holes H. In addition, the shape of the changed electrostatic guidance structure is not limited to a rectangle, but may also be a long strip shape such as a diamond, a wave, an arch bridge, an island, etc. In addition, the shapes and sizes of the multiple electrostatic guidance structures may not be uniform, and can be set according to actual needs. Two or more electrostatic guidance structures of different shapes may also be mixed on one wiring. In addition, Figure 3 and Figure 5 The display device 100 of this embodiment has the advantages of high anti-static ability and low risk of electrostatic damage. The display device 100 of this embodiment has the advantages of high anti-static ability and low risk of electrostatic damage.

[0034] [Second embodiment]

[0035] like Figure 6 As shown, a display device 100 involved in the second embodiment of the present disclosure is shown. In this embodiment, in addition to the electrostatic guidance structure to which the first wiring 131 belongs (hereinafter also referred to as the first electrostatic guidance structure), an electrostatic guidance structure to which the second wiring 132 belongs (hereinafter also referred to as the second electrostatic guidance structure) is also included. In the first electrostatic guidance structure, the first electrostatic guidance layer 171 is connected to the corresponding first wiring 131 via the contact hole H1, and in the second electrostatic guidance structure, the second electrostatic guidance layer 172 is connected to the corresponding second wiring 132 via the contact hole H2.

[0036] The first electrostatic guidance layer 171 of the first electrostatic guidance structure and the second electrostatic guidance layer 172 of the second electrostatic guidance structure can be formed by any one of the above-mentioned electrostatic guidance layers 17a, 17b, and 17c.

[0037] In addition, the first electrostatic guiding layer 171 and the second electrostatic guiding layer 172 can be connected via the connecting wire 175, so that the static electricity can move faster toward the outside of the frame area F, thereby implementing the electrostatic protection measures faster. However, it is not limited to this, and the first wiring 131 and the second wiring 132 can also be connected, and the first electrostatic guiding structure and the second electrostatic guiding structure can also be connected, and the same technical effect can be achieved.

[0038] [Third Embodiment]

[0039] Figure 7is a schematic top view of a display device according to a third embodiment of the present disclosure. Figure 7 As shown, a display device 100 involved in the third embodiment of the present disclosure is shown. In this embodiment, in addition to the first electrostatic guidance structure and the second electrostatic guidance structure, an electrostatic guidance structure to which the third wiring 133 belongs (hereinafter also referred to as the third electrostatic guidance structure) is also included. In the first electrostatic guidance structure, the first electrostatic guidance layer 171 is connected to the corresponding first wiring 131 via the contact hole H1, in the second electrostatic guidance structure, the second electrostatic guidance layer 172 is connected to the corresponding second wiring 132 via the contact hole H2, and in the third electrostatic guidance structure, the third electrostatic guidance layer 173 is connected to the corresponding third wiring 133 via the contact hole H3.

[0040] The first electrostatic guidance layer 171 to the third electrostatic guidance layer 173 of each of the first electrostatic guidance structure to the third electrostatic guidance structure can be formed by any one of the above-mentioned electrostatic guidance layers 17 a , 17 b , and 17 c .

[0041] In addition, the first electrostatic guiding layer 171 and the second electrostatic guiding layer 172 can be connected via a connecting line 175. However, it is not limited thereto, and other connecting lines can also be used to connect the third electrostatic guiding layer 173 to the first electrostatic guiding layer 171 and / or the second electrostatic guiding layer 172. In addition, the first wiring 131 and the third wiring 133 can also be connected, and the first electrostatic guiding structure can also be connected to the second electrostatic guiding structure.

[0042] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A display device, comprising a first substrate, a second substrate, and a liquid crystal layer and a sealing conductive material sandwiched between the first substrate and the second substrate, and forming a display area and a frame area surrounding the display area, wherein the sealing conductive material surrounds and seals the liquid crystal layer in the frame area, wherein the first substrate comprises on the first substrate: A thin film transistor layer, which is used to set the display area; as well as An electrostatic guiding structure is used to guide static electricity implemented on the first substrate side to the second substrate. In the frame area, it is overlapped with the sealed conductive material along at least one of the three sides of the display area and connected to the sealed conductive material.

2. The display device according to claim 1, characterized in that The electrostatic guiding structure comprises: A first conductive layer, which is continuously stacked on the first substrate along the three sides of the display area and is electrically separated from the thin film transistor layer; an insulating layer, which is stacked on the first conductive layer and includes a contact hole extending therethrough; and The electrostatic guide layer is stacked on the insulating layer and connected to the first conductive layer via the contact hole.

3. The display device according to claim 2, characterized in that: When the first substrate is viewed from above, it is assumed that the formation area of ​​the sealing conductive material is defined by the area between the inner boundary and the outer boundary, the sealing conductive material is formed between the inner boundary and the outer boundary, and the outer boundary is farther from the display area than the inner boundary. The electrostatic guide layer is formed at a position closer to the display area than the outer boundary.

4. The display device according to claim 2, characterized in that: The electrostatic guidance structure includes a first electrostatic guidance structure and a second electrostatic guidance structure that is farther away from the display area than the electrostatic guidance structure. The multiple electrostatic guidance structures are connected to each other, and the first electrostatic guidance structure and the second electrostatic guidance structure are connected to each other via their respective first conductive layers or their respective electrostatic guidance layers.

5. The display device according to claim 4, characterized in that: The electrostatic guidance layer of at least one of the first electrostatic guidance structure and the second electrostatic guidance structure is composed of a plurality of electrostatic guidance structures, and the plurality of electrostatic guidance structures are stacked on the corresponding insulating layer and connected to the corresponding first conductive layer via a plurality of contact holes.

6. The display device according to claim 4, characterized in that: The electrostatic guiding structure further includes a third electrostatic guiding structure between the first electrostatic guiding structure and the second electrostatic guiding structure, and the third electrostatic guiding structure is connected to the first electrostatic guiding structure or the second electrostatic guiding structure via the respective first conductive layer or the respective electrostatic guiding layer.

7. The display device according to claim 6, characterized in that: The electrostatic guidance layer of at least one of the first electrostatic guidance structure, the second electrostatic guidance structure and the third electrostatic guidance structure is composed of multiple electrostatic guidance structures, and the multiple electrostatic guidance structures are stacked on the corresponding insulating layer and connected to the corresponding first conductive layer via the multiple contact holes.

8. The display device according to claim 2, characterized in that: The electrostatic guidance layer is composed of a plurality of electrostatic guidance structures, and the plurality of electrostatic guidance structures are stacked on the insulating layer and connected to the first conductive layer via a plurality of the contact holes.

9. The display device according to any one of claims 6 to 8, characterized in that: The plurality of electrostatic guide structures are formed into at least one of an ellipse, a quasi-circle, a quasi-ellipse, a rectangle, and a long strip.

10. The display device according to claim 2, characterized in that: The electrostatic guiding layer is composed of a continuous electrostatic guiding structure and is connected to the first conductive layer via at least one contact hole.

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