Touch panel

Abstract

The invention discloses a touch panel which comprises a first metal layer, a base material and a second metal layer, the base material is arranged on the first metal layer, and the second metal layer is arranged on the base material; the first metal layer comprises a plurality of driving electrodes, the second metal layer comprises a plurality of sensing electrodes, and the ratio of the area of the driving electrodes to the area of the sensing electrodes is (1.8-2.2): 1. When the array substrate is applied to the touch display device, the noise intensity sensed by the plurality of sensing electrodes is reduced by reducing the sizes of the plurality of sensing electrodes, so that the aim of improving the anti-noise effect is fulfilled.

Description

Technical Field

[0001] The present invention relates to the field of touch control, and in particular to a touch panel. Background Art

[0002] In recent years, the application of touch display technology has become increasingly widespread. As touch display devices gradually move toward larger sizes, the traditional use of indium tin oxide (ITO) as touch panel electrodes still suffers from high resistance and slow touch response speeds. Therefore, metal mesh has been developed in recent years as a touch panel touch electrode.

[0003] However, if Figure 6 As shown, when a conventional touch panel is used in conjunction with an electronic paper display device, the conventional touch panel primarily utilizes a staggered diamond pattern of metal to form a plurality of sensing electrodes (RX) 100 and a plurality of driving electrodes (TX) 200. The sensing electrodes 100 and the driving electrodes 200 are symmetrically designed, and the dimensions of the sensing electrodes 100 and the driving electrodes 200 are identical. This makes it easy for the sensing electrodes 100 to sense noise, resulting in misjudgment of the touch point and affecting the touch performance of the touch panel.

[0004] Therefore, it is indeed necessary to propose a better solution to solve the shortcomings of the existing technology. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the main object of the present invention is to provide a touch panel that adjusts the size ratio of driving electrodes and sensing electrodes to reduce noise intensity and thus improve the anti-noise effect.

[0006] To address the above-mentioned problems of the prior art, the present invention adopts a technical solution in which the aforementioned touch panel includes: a first metal layer, a substrate, and a second metal layer; the first metal layer includes a plurality of drive electrodes, each of which has a first area; a substrate disposed on the first metal layer; and a second metal layer disposed on the substrate, the second metal layer includes a plurality of sensing electrodes, each of which has a second area; the ratio of the first area of ​​the drive electrodes to the second area of ​​the sensing electrodes is 1.8 to 2.2:1.

[0007] According to the above structure, when the present invention is applied to a touch display device, by adjusting the ratio of the first area of ​​the driving electrodes to the second area of ​​the sensing electrodes to 1.8 to 2.2:1, the sizes of the plurality of sensing electrodes are reduced, thereby reducing the intensity of noise sensed by the plurality of sensing electrodes, thereby achieving the purpose of improving the anti-noise effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic diagram of an embodiment of a touch panel of the present invention; Figure 2 A side view of an embodiment of a touch panel of the present invention; Figure 3 is another schematic diagram of an embodiment of a touch panel of the present invention; Figure 4 is another side view of an embodiment of a touch panel of the present invention; Figure 5 For the embodiment of the present invention Figure 3 A partial enlarged schematic diagram of part A in the middle; Figure 6 A schematic diagram of a traditional touch panel. DETAILED DESCRIPTION

[0009] For the embodiment of the touch panel of the present invention, please refer to Figure 1 and Figure 2 As shown, the present invention includes a first metal layer 20, a substrate 10, and a second metal layer 30. The substrate 10 is rectangular and has a first side 11 and a second side 12 that are parallel to each other. The substrate 10 is disposed on the first metal layer 20, and the second metal layer 30 is disposed on the substrate 10. The first metal layer 20 and the second metal layer 30 are disposed on opposite sides of the substrate 10, respectively. The substrate 10 is located between the first metal layer 20 and the second metal layer 30. In another embodiment of the present invention, another substrate (not shown) may be disposed below the first metal layer 20. The first metal layer 20 includes a plurality of drive electrodes 21, each having a first area. The second metal layer 30 includes a plurality of sensing electrodes 31, each having a second area. The ratio of the first area of ​​the drive electrodes 21 to the second area of ​​the sensing electrodes 31 is 1.8 to 2.2:1. In another embodiment of the present invention, at least one of the first metal layer 20 and the second metal layer 30 may be a metal mesh layer, or both the first metal layer 20 and the second metal layer 30 may be metal mesh layers.

[0010] With the above-described structure, when the present invention is applied to a touch display device, the ratio of the first area of ​​the drive electrodes 21 to the second area of ​​the sensing electrodes 31 is adjusted to 1.8 to 2.2:1, thereby reducing the size of the plurality of sensing electrodes 31 and reducing the intensity of the noise sensed by the plurality of sensing electrodes 31, thereby improving the noise reduction effect. A ratio of 2:1 for the first area of ​​the drive electrodes 21 to the second area of ​​the sensing electrodes 31 is preferred, but similar effects can be achieved with a ratio of 1.8:1 or 2.2:1 for the first area of ​​the drive electrodes 21 to the second area of ​​the sensing electrodes 31.

[0011] like Figure 1 and Figure 2 As shown, in this embodiment, a first direction X and a second direction Y are further provided. The first direction X is perpendicular to the second direction Y. Moreover, the first direction X is parallel to the first side 11 of the substrate 10, and the second direction Y is parallel to the second side 12 of the substrate 10.

[0012] In this embodiment, the plurality of driving electrodes 21 are parallel to each other, and the plurality of driving electrodes 21 extend along the first direction X to be in a strip shape, and are spaced apart in the second direction Y. The plurality of driving electrodes 21 each have a first side 211 and a second side 212, and the first side 211 and the second side 212 are parallel to the first direction X. In addition, the plurality of driving electrodes 21 each have a first length in the first direction X, and each of the plurality of driving electrodes 21 each have a first width W1 in the second direction Y. The sensing electrodes 31 are parallel to each other and perpendicularly intersect the plurality of driving electrodes 21. The plurality of sensing electrodes 31 extend in the second direction Y in a strip shape and are spaced apart in the first direction X. The plurality of sensing electrodes 31 each have a third side 311 and a fourth side 312 . The third side 311 and the fourth side 312 are parallel to the second direction Y. The plurality of sensing electrodes 31 each have a second length in the second direction Y and a second width W2 in the first direction X.

[0013] In this embodiment, the ratio of the first length of the driving electrode 21 to the second length of the sensing electrode 31 is 1:1, and the ratio of the first width W1 of the driving electrode 21 to the second width W2 of the sensing electrode 31 is 1.8-2.2:1. This results in a ratio of the first area of ​​the driving electrode 21 to the second area of ​​the sensing electrode 31 of 1.8-2.2:1. When there are a plurality of driving electrodes 21 and a plurality of sensing electrodes 31, the ratio of the sum of the first areas of the plurality of driving electrodes 21 to the sum of the second areas of the plurality of sensing electrodes 31 is 1.8-2.2:1. Furthermore, in this embodiment, adjacent spaces S are formed between adjacent driving electrodes 21 and adjacent sensing electrodes 31. In another embodiment, the ratio of the sum of the first areas of the plurality of driving electrodes 21 to the sum of the second areas of the plurality of sensing electrodes 31 is 2:1.

[0014] See also Figure 3 and Figure 4 As shown, in this embodiment, a plurality of first recessed structures 213 are formed on the first sides 211 of the plurality of driving electrodes 21. The plurality of first recessed structures 213 are rectangular and are spaced apart along the first direction X. A plurality of second recessed structures 214 are formed on the second sides 212 of the plurality of driving electrodes 21. The plurality of second recessed structures 214 are also rectangular and are spaced apart along the first direction X. Moreover, the plurality of second recessed structures 214 are symmetrical with the plurality of first recessed structures 213 in the second direction Y. In this embodiment, the plurality of first recessed structures 213 and the plurality of second recessed structures 214 correspond to the plurality of sensing electrodes 31, respectively.

[0015] By forming the plurality of first recessed structures 213 and the plurality of second recessed structures 214 on the first side 211 and the second side 212 of the plurality of driving electrodes 21, respectively, the area of ​​the adjacent space S between adjacent driving electrodes 21 and adjacent sensing electrodes 31 is increased, thereby increasing the sensitivity of the touch panel and improving the touch sensing effect of the touch panel.

[0016] like Figure 3 and Figure 4As shown, in this embodiment, a plurality of third recessed structures 313 are formed on the third side 311 of the plurality of sensing electrodes 31. The plurality of third recessed structures 313 are rectangular and spaced apart along the second direction Y. A plurality of fourth recessed structures 314 are formed on the fourth side 312 of the plurality of sensing electrodes 31. The plurality of fourth recessed structures 314 are also rectangular and spaced apart along the second direction Y. The plurality of fourth recessed structures 314 are symmetrical with the plurality of third recessed structures 313 along the first direction X. In this embodiment, the plurality of third recessed structures 313 and the plurality of fourth recessed structures 314 correspond to the plurality of driving electrodes 21, respectively. In this embodiment, when there are a plurality of driving electrodes 21 and sensing electrodes 31, respectively, the ratio of the sum of the first areas of the plurality of driving electrodes 21 to the sum of the second areas of the plurality of sensing electrodes 31 is 1.8 to 2.2:1. In another embodiment, the ratio of the sum of the first areas of the plurality of driving electrodes 21 to the sum of the second areas of the plurality of sensing electrodes 31 is 1.8-2.2:1.

[0017] See also Figure 3 and Figure 5 As shown, in this embodiment, a protruding structure 215 is formed between two adjacent first recessed structures 213 , and the projection of the third recessed structure 313 of the sensing electrode 31 on the substrate 10 does not overlap with the projection of the protruding structure 215 on the substrate 10 .

[0018] like Figure 3 and Figure 5 As shown, by forming the plurality of third recessed structures 313 and the plurality of fourth recessed structures 314 on the third side 311 and the fourth side 312 of the plurality of sensing electrodes 31, respectively, the two sides of the adjacent spaces S are further extended outward to form an X-shape, thereby further increasing the area of ​​the adjacent spaces S. This increases the sensitivity of the touch panel, thereby enhancing the touch sensing effect of the touch panel.

Claims

1. A touch panel, characterized in that: The touch panel includes: a first metal layer comprising a plurality of driving electrodes, each of the plurality of driving electrodes having a first area; a substrate disposed on the first metal layer; a second metal layer disposed on the substrate, the second metal layer comprising a plurality of sensing electrodes, each of the plurality of sensing electrodes having a second area; The ratio of the first area of ​​the driving electrodes to the second area of ​​the sensing electrodes is 1.8-2.2:

1.

2. The touch panel according to claim 1, wherein: The plurality of driving electrodes are parallel to each other. The plurality of driving electrodes respectively have a first side and a second side. A plurality of first recessed structures are formed on the first side of the plurality of driving electrodes. The plurality of first recessed structures are respectively arranged at intervals.

3. The touch panel according to claim 2, wherein: A plurality of second recessed structures are formed on the second sides of the plurality of driving electrodes. The plurality of second recessed structures are respectively arranged at intervals and are symmetrical with the plurality of first recessed structures.

4. The touch panel according to claim 2, wherein: The plurality of first recessed structures respectively correspond to the plurality of sensing electrodes.

5. The touch panel according to claim 3, wherein: The plurality of second recessed structures respectively correspond to the plurality of sensing electrodes.

6. The touch panel according to claim 2, wherein: The plurality of sensing electrodes intersect the plurality of driving electrodes. The plurality of sensing electrodes respectively have a third side and a fourth side. A plurality of third recessed structures are formed on the third side of the plurality of sensing electrodes. The plurality of third recessed structures are respectively arranged at intervals and correspond to the plurality of driving electrodes.

7. The touch panel according to claim 6, wherein: A plurality of fourth recessed structures are formed on the fourth sides of the plurality of sensing electrodes. The plurality of fourth recessed structures are arranged at intervals and correspond to the plurality of driving electrodes respectively.

8. The touch panel according to claim 1, wherein: The ratio of the total first area of ​​the plurality of driving electrodes to the total second area of ​​the plurality of sensing electrodes is 1.8-2.2:

1.

9. The touch panel according to claim 1, wherein: At least one of the first metal layer and the second metal layer is a metal mesh layer.

10. The touch panel according to claim 5, wherein: A protruding structure is formed between two adjacent first concave structures, and a projection of the third concave structure of the sensing electrode on the substrate does not overlap with a projection of the protruding structure on the substrate.

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