Low-cost ITO (Indium Tin Oxide) structure capable of reducing bridge point shadow

Abstract

The utility model discloses an ITO (Indium Tin Oxide) structure capable of reducing bridge point shadow with low cost, which comprises a panel, a touch control ITO assembly and a metal wiring layer, and the touch control ITO assembly comprises a first ITO layer, a second ITO layer, a plurality of first OC layers and a plurality of second OC layers. The panel, the first ITO layer and the second ITO layer are stacked in sequence to form a plurality of bridge points. The first ITO layer and the second ITO layer are designed in an integral surface mode, the first ITO layer and the second ITO layer are the same in size, and chromatic aberration is weakened. And at each bridge point, the first ITO layer, the first OC layer, the second ITO layer and the plurality of second OC layers are stacked in sequence. The metal wiring layer is arranged at the edge of the touch ITO assembly, and the metal wiring layer is electrically connected with the first ITO layer and the second ITO layer. In the utility model, the first OC layer and the second OC layer are not arranged on the whole surface and are only arranged on each bridging point of the first ITO layer and the second ITO layer, so that the areas of the first OC layer and the second OC layer are greatly reduced, the material use of the first OC layer and the second OC layer is further reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ITO, and in particular to an ITO structure that reduces bridge point shadows at low cost. Background Technology

[0002] In product manufacturing, strict standards are applied to the product's functions and effects to improve its reliability and lifespan. In display screen products, the clarity and consistency of the displayed image are crucial standards for evaluating a display.

[0003] In existing technologies, adding a touchscreen to a display screen enables touch functionality. However, currently, the ITO on touchscreens is constructed by bridging several small ITO films onto another ITO film. The two ITO films are electrically isolated, allowing the ITO to conduct in both the X and Y directions simultaneously. However, the transmittance of ITO with different film thicknesses is around 80-87%. The small ITO films appear bluish at the bridging points, resulting in a color difference between the bridging points with and without the small ITO films, affecting the user's viewing experience. Furthermore, the insulation in the ITO uses a full-surface OC (octane) layer, leading to a huge consumption of materials and high costs in mass production. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a low-cost ITO structure that reduces the shadow of bridge points.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A low-cost ITO structure for reducing bridge point shadows includes:

[0007] Panel, the panel being used for touch;

[0008] A touch-sensitive ITO assembly, comprising a first ITO layer, a second ITO layer, a plurality of first OC layers, and a plurality of second OC layers, wherein the first ITO layer and the second ITO layer are of the same size, and the panel, the first ITO layer, and the second ITO layer are stacked sequentially to form a plurality of bridge points, wherein the current in the first ITO layer is conducted in the Y direction, and the current in the second ITO layer is conducted in the X direction, and at each bridge point: the first ITO layer, the first OC layer, the second ITO layer, and the plurality of second OC layers are stacked sequentially; and

[0009] A metal trace layer is disposed at the edge of the touch ITO component. The metal trace layer is electrically connected to the first ITO layer and the second ITO layer respectively. The trace ends of the metal trace layer are provided with connection terminals for electrical connection with the FPC.

[0010] In one embodiment, the sheet resistance of the second ITO layer is 30Ω or 60Ω.

[0011] In one embodiment, the thickness of the second ITO layer is 40 nm or 80 nm.

[0012] In one embodiment, the sheet resistance of the first ITO layer is 80Ω and the thickness of the first ITO layer is 30nm.

[0013] In one embodiment, a third OC layer is attached to the surface of the metal trace layer.

[0014] In one embodiment, the thickness of the first OC layer is 1.2um-1.6um.

[0015] In one embodiment, the thickness of the first OC layer is 1.2 μm.

[0016] In one embodiment, the thickness of the second OC layer is 1.9um-2.5um.

[0017] In one embodiment, the thickness of the second OC layer is 2.2 μm.

[0018] In one embodiment, an FPC is provided on the connection end of the metal trace layer, and the gold fingers of the FPC are electrically connected to the connection end.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] 1. This utility model's low-cost ITO structure for reducing bridge point shadows involves setting up a panel, a touch ITO component, and a metal trace layer. The touch ITO component includes a first ITO layer, a second ITO layer, several first OC layers, and several second OC layers. The panel, the first ITO layer, and the second ITO layer are stacked sequentially to form several bridge points. Current in the first ITO layer conducts in the Y direction, and current in the second ITO layer conducts in the X direction. Both the first and second ITO layers are designed as a single surface and are the same size. Compared with existing technologies, the first ITO layer is not only set at the bridge points, reducing color difference and improving the user experience.

[0021] 2. At each bridging point: a first ITO layer, a first OC layer, a second ITO layer, and several second OC layers are stacked sequentially. A metal trace layer is disposed at the edge of the touch ITO component, and the metal trace layer is electrically connected to the first and second ITO layers respectively. The ends of the metal trace layers are provided with connection terminals for electrical connection to the FPC. In this invention: the first and second OC layers are not disposed across the entire surface, but only at each bridging point between the first and second ITO layers, significantly reducing the area of ​​the first and second OC layers, thereby reducing the material used and lowering costs. Since the transmittance of OC is generally around 97-98%, there is no color difference between the first and second OC layers in the visible areas of the first and second ITO layers, ensuring display quality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0023] Figure 1 This is a front view of the ITO structure for reducing bridge point shadows in one embodiment of the present invention.

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of A in the diagram;

[0025] Figure 3 This is a schematic diagram of the stacked structure of the ITO structure for reducing bridge point shadows in one embodiment of the present invention.

[0026] Figure label:

[0027] Panel 100, touch ITO component 200, first ITO layer 201, second ITO layer 202, first OC layer 203, second OC layer 204, metal wiring layer 300, connector 301. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0029] This application proposes a low-cost ITO structure to reduce bridge point shadows. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3The system includes a panel 100, a touch ITO assembly 200, and a metal trace layer 300. The touch ITO assembly 200 includes a first ITO layer 201, a second ITO layer 202, several first OC layers 203, and several second OC layers 204. The panel 100, the first ITO layer 201, and the second ITO layer 202 are stacked sequentially to form several bridge points. Current in the first ITO layer 201 is conducted in the Y direction, and current in the second ITO layer 202 is conducted in the X direction. Both the first ITO layer 201 and the second ITO layer 202 are designed as a single, continuous surface, and are the same size. Compared to existing technologies, the first ITO layer 201 is not only placed at the bridge points, reducing color difference and improving the user experience.

[0030] When a user touches the panel 100, the conductive lines in the first ITO layer 201 and the second ITO layer 202 sense the user's touch signal on the panel 100. The first ITO layer 201 and the second ITO layer 202 convert the touch signal into an electrical signal, which is then transmitted to the control module. After the control module recognizes the signal, it finally issues an execution command.

[0031] Please see Figure 2 At each bridge point: a first ITO layer 201, a first OC layer 203, a second ITO layer 202, and several second OC layers 204 are stacked sequentially. The first OC layer 203 insulates the first ITO layer 201 from the second ITO layer 202, and the second OC layers 204 insulate the second ITO layer 202 from the outside world, preventing external signals from interfering with the second ITO layer 202. The lengths of the first OC layers 203 and the second OC layers 204 are slightly greater than the length of the bridge point, and the widths of the first OC layers 203 and the second OC layers 204 are slightly greater than the width of the bridge point, achieving the effect of insulation between the first ITO layer 201 and the second ITO layer 202.

[0032] Specifically, please refer to Figure 1A metal trace layer 300 is disposed at the edge of the touch ITO assembly 200. The metal trace layer 300 is electrically connected to the first ITO layer 201 and the second ITO layer 202 respectively. The trace ends of the metal trace layer 300 are provided with connection terminals 301 for electrical connection with the FPC. In this utility model, the first OC layer 203 and the second OC layer 204 are not disposed on the entire surface, but only on each bridging point between the first ITO layer 201 and the second ITO layer 202. The first OC layer 203 insulates the first ITO layer 201 and the second ITO layer 202, and the second OC layer 204 insulates the lower surface of the second ITO layer from the outside world. This significantly reduces the area of ​​the first OC layer 203 and the second OC layer 204, thereby reducing the material used in the first OC layer 203 and the second OC layer 204 and reducing costs. Since the transmittance of OC is generally around 97-98%, the first OC layer 203 and the second OC layer 204 have no color difference in the visible area of ​​the first ITO layer 201 and the second ITO layer 202, thus ensuring the display effect.

[0033] In one embodiment, the sheet resistance of the first ITO layer 201 is 80Ω and the thickness of the first ITO layer 201 is 30nm.

[0034] Furthermore, the second ITO layer 202 has a sheet resistance of 30Ω and a corresponding thickness of 80nm.

[0035] Furthermore, the second ITO layer 202 has a sheet resistance of 60Ω and a corresponding thickness of 40nm.

[0036] Since the metal trace layer 300 is made of three layers of molybdenum-aluminum-molybdenum metal, the surface metal is relatively active. Therefore, a third OC layer is attached to the surface of the metal trace layer 300. The third OC layer is used to protect the metal trace and prevent it from oxidizing.

[0037] In one embodiment, the thickness of the first OC layer 203 is 1.2µm-1.6µm. If the thickness of the first OC layer 203 is less than 1.2µm, the insulation of the first OC layer 203 to the first ITO layer 201 and the second ITO layer 202 is poor. If the thickness of the first OC layer 203 is greater than 1.6µm, the second ITO layer 202 is very prone to breakage during attachment, resulting in poor quality.

[0038] Preferably, the thickness of the first OC layer 203 is 1.2 μm.

[0039] Furthermore, the thickness of the second OC layer 204 is 1.9um-2.5um.

[0040] Furthermore, the thickness of the second OC layer 204 is 2.2 μm.

[0041] Furthermore, an FPC is provided on the connection terminal 301 of the metal trace layer 300, and the gold fingers of the FPC are electrically connected to the connection terminal 301. When a user touches the panel 100, the conductive lines in the first ITO layer 201 and the second ITO layer 202 sense the user's touch signal on the panel 100. The first ITO layer 201 and the second ITO layer 202 convert the touch signal into an electrical signal, which is transmitted to the FPC through the metal trace layer 300. The FPC and the chip recognize the signal and issue commands.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A low-cost ITO structure for reducing bridge point shadows, characterized in that, include: Panel, the panel being used for touch; A touch ITO assembly, comprising a first ITO layer, a second ITO layer, a plurality of first OC layers, and a plurality of second OC layers, wherein the first ITO layer and the second ITO layer are of the same size, and the panel, the first ITO layer, and the second ITO layer are stacked sequentially to form a plurality of bridge points, wherein the current in the first ITO layer is conducted in the Y direction, and the current in the second ITO layer is conducted in the X direction, wherein at each bridge point: the first ITO layer, the first OC layer, the second ITO layer, and the plurality of second OC layers are stacked sequentially; and A metal trace layer is disposed at the edge of the touch ITO component. The metal trace layer is electrically connected to the first ITO layer and the second ITO layer respectively. The trace ends of the metal trace layer are provided with connection terminals for electrical connection with the FPC.

2. The low-cost ITO structure for reducing bridge point shadows according to claim 1, characterized in that, The sheet resistance of the second ITO layer is 30Ω or 60Ω.

3. The low-cost ITO structure for reducing bridge point shadows according to claim 1, characterized in that, The thickness of the second ITO layer is 40 nm or 80 nm.

4. The low-cost ITO structure for reducing bridge point shadows according to claim 1, characterized in that, The sheet resistance of the first ITO layer is 80Ω, and the thickness of the first ITO layer is 30nm.

5. The low-cost ITO structure for reducing bridge point shadows according to claim 1, characterized in that, A third OC layer is attached to the surface of the metal trace layer.

6. The low-cost ITO structure for reducing bridge point shadows according to claim 1, characterized in that, The thickness of the first OC layer is 1.2um-1.6um.

7. The low-cost ITO structure for reducing bridge point shadows according to claim 6, characterized in that, The thickness of the first OC layer is 1.2 μm.

8. The low-cost ITO structure for reducing bridge point shadows according to claim 1, characterized in that, The thickness of the second OC layer is 1.9um-2.5um.

9. The low-cost ITO structure for reducing bridge point shadows according to claim 8, characterized in that, The thickness of the second OC layer is 2.2 μm.

10. The low-cost ITO structure for reducing bridge point shadows according to claim 2, characterized in that, An FPC is provided on the connection end of the metal trace layer, and the gold fingers of the FPC are electrically connected to the connection end.

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