Touch device
By adopting an electrode structure with a mosaic pattern in the touch control device, and using the mutual capacitive sensing amount of adjacent electrodes, the problem of degradation of multi-touch recognition accuracy in the prior art is solved, and effective recognition of fingers close to each other is achieved.
Patent Information
- Application Number
- CN202510107960.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-01-20
- Filing Date
- 2025-01-23
- Publication Date
- 2025-05-30
AI Technical Summary
When existing touch devices recognize multi-touch, it is difficult to effectively distinguish fingers that are close to each other, resulting in a decrease in recognition accuracy.
An electrode structure with a mosaic pattern is adopted, wherein each row of electrodes consists of adjacent first electrodes and second electrodes. The two are intersected by a plurality of interconnected hexagonal patterns to form a larger mutually capacitive sensing amount, thereby improving the recognition ability of multi-touch.
Through the combination of self-containment and mutual tolerance, two fingers that are close can be effectively identified, improving the accuracy of multi-touch recognition of the touch device.
Smart Images
Figure CN120066319A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a touch device, and more particularly to sensing electrodes of a touch device. Background Art
[0002] Due to the convenience in use, more and more electronic devices (such as mobile electronic devices like mobile phones, digital cameras, tablet computers, etc.) use touch devices as input devices for operation. Summary of the Invention
[0003] One object of the present invention is to provide a touch device having electrodes with a mosaic pattern.
[0004] The present invention provides a touch device, including multiple rows of electrodes and multiple traces. The multiple rows of electrodes are used to sense an input of a user. Each row of electrodes includes an adjacent first electrode and a second electrode, and the first electrode and the second electrode have substantially the same shape and structure. The first electrode has a plurality of interconnected first patterns arranged along the column direction, and the second electrode has a plurality of interconnected second patterns arranged along the column direction. The plurality of first patterns and the plurality of second patterns have a hexagonal shape. The upper part of each first pattern includes a first sub-pattern having an approximately rhombic shape. The lower part of each second pattern includes a second sub-pattern having an approximately rhombic shape. The first sub-pattern includes a plurality of voids to accommodate the second sub-pattern, such that the upper part region of each first pattern and the lower part region of the second pattern overlap each other. The upper part of each first pattern and the lower part of each second pattern intersect and grip each other to form a mosaic pattern. The multiple traces are respectively connected to each first electrode and each second electrode in the multiple rows of electrodes.
[0005] In the touch device of the present invention, since the first electrode and the second electrode mesh with each other, a relatively large mutual capacitance induction amount can be generated, and through the combined operation of self-capacitance and mutual capacitance, it is helpful to identify two fingers that are relatively close. Brief Description of the Drawings
[0006] Figure 1 Showing the touch device of the present invention.
[0007] Figure 2 Showing Figure 1 A partial enlarged view of area 21 in.
[0008] Figure 3 Showing Figure 1 The electrode 112 in.
[0009] Figure 4 Showing Figure 1 The electrode 113 in.
[0010] Figure 5 ShowingFigure 1 the electrodes 112 and 113 in
[0011] Figure 6 Another embodiment showing the lower sub-pattern 1122 of the display electrode 112.
[0012] Figure 7 Another embodiment showing the upper sub-pattern 1132 of the display electrode 113.
[0013] Figure 8 Showing the operation of an object on the touch device of the present invention.
[0014] Figure 9 Showing the situation of two fingers on the touch device of the present invention.
[0015] Figure 10 Showing the results of self-capacitance scanning and mutual-capacitance scanning.
[0016] Description of reference numerals: 10 - touch device; 11 - row electrode; 111 to 114 - electrodes; 1121 - pattern; 1122 - sub-pattern; 1123 - gap; 1124 - electrode branch; 1125 - electrode branch; 1126 - electrode branch; 1127 - electrode branch; 1128 - electrode branch; 1131 - pattern; 1132 - sub-pattern; 1133 - gap; 1134 - electrode branch; 1135 - electrode branch; 1136 - electrode branch; 1137 - electrode branch; 1138 - electrode branch; 12 - row electrode; 121 to 124 - electrodes; 13 to 20 - traces; 21 - area; 30 to 31 - microstructures; 40 - area; 50 - object; 51 - finger; 52 - finger; 60 - curve; 61 - curve; A1 - segmented area; A2 - segmented area; B1 - segmented area; B2 - segmented area; C1 - segmented area; C2 - segmented area; D1 - segmented area; D2 - segmented area; E1 - segmented area; E2 - segmented area. Detailed Description of the Invention
[0017] Figure 1 Showing the touch device of the present invention. In Figure 1 it, the touch device 10 includes multiple rows of electrodes and multiple traces formed on a substrate (not shown in the figure). For the purpose of simplicity, Figure 1Only one row of electrodes 11 and the traces 13-16 connecting this row of electrodes 11 are shown. For the configuration of other rows of electrodes and traces, reference can be made to the row of electrodes 11 and the traces 13-16. In one embodiment, the multiple rows of electrodes and the multiple traces are conductors on the same layer. The multiple rows of electrodes are used to sense the input of a user. Each row of electrodes 11 includes a plurality of electrodes 111-114. Electrode 112 is adjacent to electrodes 111 and 113, and electrode 112 is between electrodes 111 and 113. Electrode 113 is adjacent to electrodes 112 and 114, and electrode 113 is between electrodes 112 and 114. The multiple traces 13-16 are respectively connected to each of the electrodes 111-114 in the row of electrodes 11. Each of the electrodes 111-114 is connected via a trace 13-16 to a controller (not shown in the figure), and the controller is used to perform self-capacitance scanning or mutual-capacitance scanning on all the electrodes on the touch device 10, where the self-capacitance scanning is used to sense the capacitance change amount of each electrode, and the mutual-capacitance scanning is used to sense the capacitance change amount between adjacent electrodes. Electrodes 111-114 have substantially the same shape and structure. Since the configuration of each row of electrodes is the same, for the sake of simplicity, the configuration of the electrodes 111-114 and the traces 13-16 of only one row of electrodes 11 will be described below.
[0018] Each electrode of the present invention is composed of a plurality of microstructures having a > shape or a wavy shape. As Figure 2 shown. Figure 2 Show Figure 1 A partial enlarged view of area 21 in. Electrode 112 is composed of a plurality of microstructures 30 having a > shape or a wavy shape, and electrode 113 is composed of a plurality of microstructures 31 having a > shape or a wavy shape, but the present invention is not limited thereto. All the microstructures 30 of electrode 112 are electrically connected together. All the microstructures 31 of electrode 113 are electrically connected together. Taking electrode 112 as an example, a plurality of adjacent microstructures 30 are connected to form a wire 35. In electrode 112, the left-right or up-down adjacent wires 35 are electrically connected together via conductive line segments 34. In one embodiment, the multiple traces 13-20 can also be composed of a plurality of microstructures having a > shape or a wavy shape.
[0019] Figure 3 Show Figure 1 The electrode 112 in. Figure 4 Show Figure 1 The electrode 113 in. As Figure 3 shown, electrode 112 has a plurality of interconnected patterns 1121 arranged along the column direction X (horizontal direction), and each of the upper and lower parts of each pattern 1121 includes a sub-pattern 1122. As Figure 4As shown, the electrode 113 has a plurality of interconnected patterns 1131 arranged along the column direction X. Each of the upper and lower portions of each pattern 1131 includes a sub-pattern 1132. The sub-pattern 1122 includes a plurality of voids 1123 to accommodate the sub-pattern 1132, and the sub-pattern 1132 also includes a plurality of voids 1133 to accommodate the sub-pattern 1122, such that the area of the upper portion of each pattern 1131 overlaps with the area of the lower portion of a pattern 1121. The upper portion of the pattern 1131 and the lower portion of the pattern 1121 interlock to form a mosaic pattern, as Figure 5 shown in region 40 of
[0020] In Figure 3 and Figure 4 , the number of patterns 1121 of the electrode 112 is the same as the number of patterns 1131 of the electrode 113. The patterns 1121 and 1131 have the same shape and structure, both being hexagonal in shape, while the sub-patterns 1122 and 1132 are diamond-shaped or approximately diamond-shaped, but the present invention is not limited thereto. The patterns 1121, 1131, sub-patterns 1122 and sub-patterns 1132 may also be other regular or irregular shapes.
[0021] In Figures 3 to 5 , the electrode areas of the sub-patterns 1122 of the electrode 112 and the sub-patterns 1132 of the electrode 113 that extend to adjacent electrodes are configured to decrease towards the adjacent electrodes. That is, the electrode area of the sub-pattern 1122 extending to the electrode 113 is configured to decrease towards the electrode 113, and the electrode area of the sub-pattern 1132 extending to the electrode 112 is configured to decrease towards the electrode 112. In Figure 3 and Figure 4 , the electrode areas of the sub-patterns 1122 of the electrode 112 and the sub-patterns 1132 of the electrode 113 are decreased by reducing the number of electrode branches, but the present invention is not limited thereto. The present invention may also reduce the electrode branch width by reducing the number of wires in the electrode branches, thereby achieving a decrease in the electrode area.
[0022] Figure 6 shows another embodiment of the sub-pattern 1122 of the pattern 1121 of the electrode 112. As Figure 6 shown, the sub-pattern 1122 includes a plurality of segmented regions A1, B1, C1, D1 and E1. The electrode areas of the plurality of segmented regions A1, B1, C1, D1 and E1 are configured to decrease towards the electrode 113. Each of the plurality of segmented regions A1, B1, C1, D1 and E1 includes at least one electrode branch. The number of electrode branches of the plurality of segmented regions A1, B1, C1, D1 and E1 may be the same or different, and the width of the at least one electrode branch may be the same or different. In Figure 6In an embodiment, the segmented region A1 includes five electrode branches 1124, the segmented region B1 includes four electrode branches 1125, the segmented region C1 includes four electrode branches 1126, the segmented region D1 includes two electrode branches 1127, and the segmented region E1 includes one electrode branch 1128. The width of the electrode branch 1124 is the same as that of the electrode branch 1125, the width of the electrode branch 1126 is the same as that of the electrode branch 1127, the width of the electrode branch 1125 is greater than that of the electrode branch 1126, and the width of the electrode branch 1127 is greater than that of the electrode branch 1128.
[0023] Figure 7 Another embodiment of the sub-pattern 1132 of the pattern 1131 of the display electrode 113. As Figure 7 shown, the sub-pattern 1132 includes a plurality of segmented regions A2, B2, C2, D2, and E2, and the electrode areas of the plurality of segmented regions A2, B2, C2, D2, and E2 are configured to decrease towards the electrode 112. Each of the plurality of segmented regions A2, B2, C2, D2, and E2 includes at least one electrode branch. The number of electrode branches of the plurality of segmented regions A2, B2, C2, D2, and E2 may be the same or different, and the widths of the at least one electrode branch may be the same or different. In Figure 7 an embodiment, the segmented region A2 includes five electrode branches 1134, the segmented region B2 includes five electrode branches 1135, the segmented region C2 includes three electrode branches 1136, the segmented region D2 includes two electrode branches 1137, and the segmented region E2 includes one electrode branch 1138. The width of the electrode branch 1135 is the same as that of the electrode branch 1136, the width of the electrode branch 1137 is the same as that of the electrode branch 1138, the width of the electrode branch 1135 is greater than that of the electrode branch 1136, and the width of the electrode branch 1136 is greater than that of the electrode branch 1137.
[0024] Figure 8 Showing the operation of an object on the touch device of the present invention. As Figure 8 shown, when the object 50 (finger or stylus) moves horizontally between the electrodes 112 and 113 to perform a line drawing operation, since the electrodes 112 and 113 are intertwined with each other, during the movement of the finger or stylus 50, an induction amount will be generated on both the electrodes 112 and 113. Therefore, the movement trajectory displayed on the display will not jitter.
[0025] Figure 9 Showing the situation of two fingers on the touch device of the present invention. Figure 10 Showing the results of self-capacitance scanning and mutual-capacitance scanning. As Figure 9 shown, when two fingers 51 and 52 touch the touch device 10, the touch device 10 can obtain Figure 10 a curve graph through self-capacitance scanning and mutual-capacitance scanning. InFigure 10 Among them, curve 60 is the result obtained from self-capacitance scanning, and curve 61 is the result obtained from mutual-capacitance scanning. Assume that when the distance between two fingers 51 and 52 is less than or equal to 1 mm, only one peak can be obtained from self-capacitance scanning, as shown by curve 60. Therefore, it is impossible to identify that two fingers are touching the touch device 10. Since electrode 111 and electrode 112 are intertwined with each other and electrode 112 and electrode 113 are intertwined with each other, a relatively large mutual-capacitance induction amount can be generated between adjacent electrodes. When mutual-capacitance scanning is performed, two peaks can be obtained, as shown by curve 61. In other words, the touch device 10 of the present invention helps to identify two fingers with a relatively short distance through the combined operation of self-capacitance and mutual-capacitance.
[0026] The above descriptions are only examples of the present invention and do not impose any formal restrictions on the present invention. Although the present invention has been provided above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field to which the present invention pertains, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A touch device, characterized in that: include: A plurality of rows of electrodes for sensing an input of a user, each row of electrodes comprising a first electrode and a second electrode adjacent to each other, the first electrode having n interconnected first patterns arranged along a column direction, the second electrode having n interconnected second patterns arranged along the column direction, wherein n is a positive integer greater than 1, each of the first patterns and each of the second patterns having a hexagonal shape, the upper portion of each of the first patterns comprising a first sub-pattern, the lower portion of each of the second patterns comprising a second sub-pattern, the first sub-pattern comprising a plurality of gaps to accommodate the second sub-pattern, such that an area of the upper portion of each of the first patterns and an area of the lower portion of the second pattern overlap with each other, and an upper portion of each of the first patterns and a lower portion of the second pattern interlock with each other, wherein an electrode area of the first sub-pattern extending to the second electrode is configured to decrease toward the second electrode, and an electrode area of the second sub-pattern extending to the first electrode is configured to decrease toward the first electrode; as well as A plurality of wirings respectively connect each of the first electrodes and each of the second electrodes in the plurality of rows of electrodes.
2. The touch control device according to claim 1, wherein: The first electrode and the second electrode are both composed of a plurality of microstructures having a > shape or a wave shape.
3. The touch control device according to claim 1, wherein: The first sub-pattern includes a plurality of first segmented regions, and electrode areas of the plurality of first segmented regions are configured to decrease toward the second electrode. The second sub-pattern includes a plurality of second segmented regions, and electrode areas of the plurality of second segmented regions are configured to decrease toward the first electrode.
4. The touch control device according to claim 3, wherein: Each of the first segmented regions and each of the second segmented regions include at least one electrode branch, the number of the at least one electrode branch in the multiple first segmented regions is different or the width of the at least one electrode branch is different, and the number of the at least one electrode branch in the multiple second segmented regions is different or the width of the at least one electrode branch is different.