Touch device
By designing staggered capacitor and electromagnetic touch electrodes in the display panel and using parallel wiring layout, the problem of integrating capacitor and electromagnetic touch functions was solved, realizing a touch device with low capacitance and low resistance, reducing module thickness and improving touch performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AU OPTRONICS CORP
- Filing Date
- 2022-09-02
- Publication Date
- 2026-05-08
AI Technical Summary
How to integrate capacitive and electromagnetic touch functions into the display panel to reduce the overall module thickness and achieve good capacitive and electromagnetic touch performance.
Design a touch device comprising a substrate, electronic components, multiple capacitors and electromagnetic touch electrodes, an insulating layer, and capacitor and electromagnetic touch traces. Through staggered arrangement and conductive layer design, the capacitors and electromagnetic touch electrodes are separated and connected in parallel, and the trace layout is optimized to reduce capacitance and resistance.
This achieves low capacitance and low resistance in the touch device, improving the performance of capacitive and electromagnetic touch, and reducing the overall module thickness.
Smart Images

Figure CN115357144B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an electronic device, and more particularly to a touch device. Background Technology
[0002] Active capacitive styluses are currently one of the mainstream touch tools. However, due to communication protocols, active capacitive styluses require specific signal frequencies, making them susceptible to display noise and unsuitable for use with high-resolution display panels. Generally, electromagnetic styluses require an electromagnetic sensing board. This board uses low-resistance metal to create the induction coil or signal transmission coil, so it is currently primarily surface-mount. This surface-mount design, placed behind the display panel, increases the overall module thickness. Therefore, integrating capacitive and electromagnetic touch functionality into the display panel to reduce overall module thickness while achieving good capacitive and electromagnetic touch performance remains a significant challenge for developers. Summary of the Invention
[0003] This invention provides a touch device with excellent capacitive and electromagnetic touch performance.
[0004] The touch device of the present invention includes a substrate, electronic components, a plurality of first capacitive touch electrodes, a plurality of first electromagnetic touch electrodes, an insulating layer, a plurality of second capacitive touch electrodes, a plurality of second electromagnetic touch electrodes, a plurality of first capacitive touch traces, a plurality of first electromagnetic touch trace pairs, a plurality of second capacitive touch traces, and a plurality of second electromagnetic touch trace pairs. The substrate has a working area, a first peripheral area, a second peripheral area, a third peripheral area, and a fourth peripheral area, wherein the first, second, third, and fourth peripheral areas are located outside the working area. The first and second peripheral areas are located on opposite sides of the working area, the third peripheral area is connected between the first and second peripheral areas, and the fourth peripheral area is disposed opposite the third peripheral area and connected between the first and second peripheral areas. Electronic components are disposed in the first peripheral area of the substrate. A plurality of first capacitive touch electrodes are disposed in the working area of the substrate and arranged in a first direction. A plurality of first electromagnetic touch electrodes are disposed in the working area of the substrate and arranged in a first direction. Multiple first capacitive touch electrodes are separated from multiple first electromagnetic touch electrodes, and each first capacitive touch electrode is surrounded by a corresponding first electromagnetic touch electrode. An insulating layer is disposed on the multiple first capacitive touch electrodes and the multiple first electromagnetic touch electrodes. Multiple second capacitive touch electrodes are disposed on the insulating layer, located in the working area of the substrate, and arranged in a second direction, wherein the first direction and the second direction are staggered. Multiple second electromagnetic touch electrodes are disposed on the insulating layer, located in the working area of the substrate, and arranged in a second direction. Multiple second capacitive touch electrodes are separated from multiple second electromagnetic touch electrodes, and each second capacitive touch electrode is surrounded by a corresponding second electromagnetic touch electrode. Multiple first capacitive touch traces are electrically connected to the multiple first capacitive touch electrodes respectively. Multiple first capacitive touch traces are structurally connected to the multiple first capacitive touch electrodes in a fourth peripheral area, and the multiple first capacitive touch traces extend directly from the fourth peripheral area to the first peripheral area to electrically connect to electronic components. Multiple first electromagnetic touch traces of each pair of first electromagnetic touch traces are electrically connected to both ends of a corresponding first electromagnetic touch electrode. Multiple first electromagnetic touch traces are structurally connected to multiple first electromagnetic touch electrodes in a third peripheral area. Multiple pairs of first electromagnetic touch traces extend directly from the third peripheral area to the first peripheral area for electrical connection to electronic components. Multiple second capacitive touch traces are electrically connected to multiple second capacitive touch electrodes. Multiple second capacitive touch traces are structurally connected to multiple second capacitive touch electrodes in a second peripheral area, and these traces extend sequentially from the second peripheral area to a fourth peripheral area and then to the first peripheral area for electrical connection to electronic components. Multiple second electromagnetic touch traces in each pair are electrically connected to both ends of a corresponding second electromagnetic touch electrode. Multiple second electromagnetic touch traces are structurally connected to multiple second electromagnetic touch electrodes in the first peripheral area. Multiple pairs of second electromagnetic touch traces extend directly in the first peripheral area for electrical connection to electronic components.
[0005] In one embodiment of the present invention, each of the first electromagnetic touch electrodes has a plurality of first main portions located on opposite sides of a corresponding first capacitive touch electrode and a first curved portion connecting the plurality of first main portions, and the first curved portion and a corresponding first capacitive touch trace cross each other in the fourth peripheral region.
[0006] In one embodiment of the present invention, at least a portion of the plurality of first main portions of each first electromagnetic touch electrode, the first bent portion of each first electromagnetic touch electrode, and a first electromagnetic touch trace electrically connected to a first electromagnetic touch trace pair of the first electrode touch electrode belong to the first conductive layer, the first capacitive touch trace has a first crossing portion located in the fourth peripheral region, the first crossing portion of the first capacitive touch trace belongs to the second conductive layer, and an insulating layer is disposed between the first conductive layer and the second conductive layer.
[0007] In one embodiment of the present invention, each of the above-mentioned second electromagnetic touch electrodes has a plurality of second main portions located on opposite sides of a corresponding second capacitive touch electrode and a second curved portion connecting the plurality of second main portions, and the second curved portion and a corresponding second capacitive touch trace cross each other in the second peripheral area.
[0008] In one embodiment of the present invention, the second capacitive touch trace has a second crossing portion located in the second peripheral region. The second crossing portion of the second capacitive touch trace belongs to the first conductive layer. The plurality of second main portions of each second electromagnetic touch electrode, the second bending portion of each second electromagnetic touch electrode, and at least a portion of a second electromagnetic touch trace electrically connected to a pair of second electromagnetic touch traces of the second electrode touch electrode belong to the second conductive layer, and an insulating layer is disposed between the first conductive layer and the second conductive layer.
[0009] In one embodiment of the present invention, the plurality of first capacitive touch electrodes are arranged at a first spacing in a first direction, and the plurality of first electromagnetic touch electrodes are arranged at a second spacing in a first direction, wherein the first spacing is substantially equal to the second spacing.
[0010] In one embodiment of the present invention, the plurality of second capacitive touch electrodes are arranged at a third spacing in the second direction, and the plurality of second electromagnetic touch electrodes are arranged at a fourth spacing in the second direction, wherein the third spacing is substantially equal to the fourth spacing.
[0011] In one embodiment of the present invention, the insulating layer is located between the first conductive layer and the second conductive layer, and each of the plurality of first electromagnetic touch traces includes a first portion and a second portion belonging to the first conductive layer and the second conductive layer respectively, and the first portion and the second portion of each of the plurality of first electromagnetic touch traces are connected in parallel.
[0012] In one embodiment of the present invention, each of the plurality of second electromagnetic touch traces includes a first portion and a second portion belonging to the first conductive layer and the second conductive layer, respectively, and the first portion and the second portion of each of the plurality of second electromagnetic touch traces are connected in parallel. Attached Figure Description
[0013] Figure 1 This is a cross-sectional schematic diagram of a touch device 10 according to an embodiment of the present invention;
[0014] Figure 2 This is a top view and perspective view of a touch device 10 according to an embodiment of the present invention;
[0015] Figure 3 This is an enlarged schematic diagram of a partial area of a touch device 10 according to an embodiment of the present invention;
[0016] Figure 4 for Figure 3 A schematic diagram of the first capacitive touch electrode 512 and the first electromagnetic touch electrode 514;
[0017] Figure 5 for Figure 3 A schematic diagram of the second capacitive touch electrode 532 and the second electromagnetic touch electrode 534;
[0018] Figure 6 This is a cross-sectional schematic diagram of a touch device 10 according to an embodiment of the present invention;
[0019] Figure 7 A top view and perspective view of a comparative example touch device 10';
[0020] Figure 8 This is a top view and perspective schematic diagram of a touch device 10A according to another embodiment of the present invention;
[0021] Figure 9 This is a cross-sectional schematic diagram of a touch device 10A according to another embodiment of the present invention.
[0022] Symbol Explanation
[0023] 10, 10', 10A: Touchscreen device
[0024] 100: Display panel
[0025] 110, 120: Substrate
[0026] 120a: Outer surface
[0027] 122: Work Area
[0028] 124a: First Surrounding Area
[0029] 124b: Second Surrounding Area
[0030] 124c: Third surrounding area
[0031] 124d: Fourth Peripheral Area
[0032] 130: Display medium
[0033] 140: pixel array
[0034] 150: Light-blocking pattern layer
[0035] 160: Color filter layer
[0036] 200: Backlight Module
[0037] 300: Lower polarizer
[0038] 400: Upper polarizer
[0039] 500, 500', 500A: Integrated touch structure
[0040] 510: First conductive layer
[0041] 512: First capacitive touch electrode
[0042] 514: First electromagnetic touch electrode
[0043] 514a: First Main Section
[0044] 514b: First bend
[0045] 516, 516A: First electromagnetic touch control trace
[0046] 516A-1, 536A-1: Part 1
[0047] 516A-2, 536A-2: Part Two
[0048] 518: Second Crossing Section
[0049] 520: Insulation layer
[0050] 522, 524: Opening
[0051] 530: Second conductive layer
[0052] 532: Second capacitive touch electrode
[0053] 534: Second electromagnetic touch electrode
[0054] 534a: Second Main Section
[0055] 534b: Second bend
[0056] 536, 536A: Second electromagnetic touch control traces
[0057] 538: First Crossing Section
[0058] 600: Cover plate
[0059] 700: Electronic Components
[0060] L CX First capacitive touch circuit routing
[0061] L CY Second capacitive touch trace
[0062] L EMX First electromagnetic touch control wiring pair
[0063] L EMY Second electromagnetic touch control wiring pair
[0064] P1: First spacing
[0065] P2: Second spacing
[0066] P3: Third spacing
[0067] P4: Fourth Spacing
[0068] R1: Local region
[0069] x: Second direction
[0070] y: First direction
[0071] I-I', II-II': section line Detailed Implementation
[0072] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.
[0073] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or an intermediate element may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate element is present. As used herein, "connection" can refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may involve the presence of other elements between the two elements.
[0074] As used herein, “about,” “approximately,” or “substantially” includes the value and the average value within an acceptable range of deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurement under discussion and a particular number of errors associated with the measurement (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the use of “about,” “approximately,” or “substantially” herein may be chosen based on the optical, etched, or other properties to select a more acceptable range of deviations or standard deviations, and may not require a single standard deviation to apply to all properties.
[0075] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology and this invention, and will not be interpreted as having idealized or overly formal meanings unless expressly defined herein.
[0076] Figure 1 This is a cross-sectional schematic diagram of a touch device 10 according to an embodiment of the present invention.
[0077] Please refer to Figure 1 The touch device 10 includes a substrate 120 and an integrated touch structure 500 disposed on the substrate 120. In this embodiment, the touch device 10 may optionally include a display panel 100, and the integrated touch structure 500 may be disposed on the outer surface 120a of one of the substrates 120 of the display panel 100.
[0078] In detail, in this embodiment, the display panel 100 includes a substrate 110, a substrate 120, a display medium 130, a pixel array 140, and a light-shielding pattern layer 150. The substrate 110 and the substrate 120 are disposed opposite to each other. The display medium 130 is disposed between the substrate 110 and the substrate 120. The pixel array 140 is disposed between the display medium 130 and the substrate 110. The light-shielding pattern layer 150 is disposed between the substrate 120 and the display medium 130. The substrate 120 has an outer surface 120a facing away from the display medium 130. The integrated touch structure 500 may be selectively disposed on the outer surface 120a of the substrate 120, but the present invention is not limited thereto.
[0079] In this embodiment, the display medium 130 is, for example, a non-self-emissive display medium (e.g., liquid crystal), and the display panel 100 may further include a color filter layer 160 disposed between the light-shielding pattern layer 150 and the display medium 130. The touch device 10 may further include a backlight module 200, an upper polarizer 400, and a lower polarizer 300, wherein the display panel 100 is located between the upper polarizer 400 and the lower polarizer 300, and the lower polarizer 300 is located between the display panel 100 and the backlight module 200. However, the present invention is not limited thereto. In other embodiments, the display medium 130 may also be a self-emissive display medium, such as a micro light-emitting diode (μLED), an organic electroluminescent layer, etc., and the touch device 10 may omit the color filter layer 160, the backlight module 200, the upper polarizer 400, and / or the lower polarizer 300.
[0080] In this embodiment, the touch device 10 may further include a cover lens 600, wherein the integrated touch structure 500 is located between the cover lens 600 and the display panel 100. The cover lens 600 is light-transmitting and serves to protect the integrated touch structure 500 beneath it.
[0081] Figure 2 This is a top view and perspective view of a touch device 10 according to an embodiment of the present invention. Figure 2 The substrate 120, integrated touch structure 500, and electronic components 700 of the touch device 10 are shown, while other components of the touch device 10 are omitted.
[0082] Please refer to Figure 2 The substrate 120 has a working area 122, a first peripheral area 124a, a second peripheral area 124b, a third peripheral area 124c, and a fourth peripheral area 124d. The first peripheral area 124a, the second peripheral area 124b, the third peripheral area 124c, and the fourth peripheral area 124d are located outside the working area 122. The first peripheral area 124a and the second peripheral area 124b are located on opposite sides of the working area 122. The third peripheral area 124c is connected between the first peripheral area 124a and the second peripheral area 124b. The fourth peripheral area 124d is disposed opposite to the third peripheral area 124c and is connected between the first peripheral area 124a and the second peripheral area 124b. The working area 122 refers to the area in the touch device 10 that has touch functionality, while the first peripheral area 124a, the second peripheral area 124b, the third peripheral area 124c, and the fourth peripheral area 124d refer to the areas located around the working area 122. For example, in this embodiment, the working area 122 may be a rectangular area, and the first peripheral area 124a, the second peripheral area 124b, the third peripheral area 124c and the fourth peripheral area 124d may be the lower border area, the upper border area, the right border area and the left border area located on the lower side, the upper side, the right side and the left side of the working area 122, respectively, but the present invention is not limited thereto.
[0083] The touch device 10 also includes an electronic component 700 disposed on a first peripheral region 124a of the substrate 120. For example, in this embodiment, the electronic component 700 may be a driver chip bonded to the first peripheral region 124a of the substrate 120. However, the invention is not limited thereto, and in other embodiments, the electronic component 700 may be other types of electronic components, such as, but not limited to, flexible printed circuit boards (FPCs).
[0084] Figure 3 This is an enlarged schematic diagram of a partial area of a touch device 10 according to an embodiment of the present invention. Figure 3 correspond Figure 2 The local region R1.
[0085] Figure 4 Show Figure 3 The first capacitive touch electrode 512 and the first electromagnetic touch electrode 514.
[0086] Figure 5 Show Figure 3 The second capacitive touch electrode 532 and the second electromagnetic touch electrode 534.
[0087] Figure 6 This is a cross-sectional schematic diagram of a touch device 10 according to an embodiment of the present invention. Figure 6 correspond Figure 2 The section line I-I'.
[0088] Please refer to Figure 2 The integrated touch structure 500 of the touch device 10 includes a plurality of first capacitive touch electrodes 512 disposed on the working area 122 of the substrate 120. The plurality of first capacitive touch electrodes 512 are arranged in a first direction y. Generally, each first capacitive touch electrode 512 extends in a second direction x. Please refer to... Figure 2 , Figure 3 and Figure 4 In this embodiment, based on light transmittance considerations, the first capacitive touch electrode 512 can be a grid-shaped conductive pattern.
[0089] Please refer to Figure 2The integrated touch structure 500 of the touch device 10 also includes a plurality of first electromagnetic touch electrodes 514 disposed in the working area 122 of the substrate 120. The plurality of first electromagnetic touch electrodes 514 are arranged in a first direction y. A plurality of first capacitive touch electrodes 512 are separated from the plurality of first electromagnetic touch electrodes 514. Each first capacitive touch electrode 512 is surrounded by a corresponding first electromagnetic touch electrode 514. For example, in this embodiment, the outer contour of the first capacitive touch electrode 512 is generally elongated, and the outer contour of the first electromagnetic touch electrode 514 is generally U-shaped. The generally U-shaped first electromagnetic touch electrode 514 is disposed beside the upper side, lower side, and left side of the first capacitive touch electrode 512, but the present invention is not limited thereto. Please refer to... Figure 2 , Figure 3 and Figure 4 In this embodiment, based on light transmittance considerations, the first electromagnetic touch electrode 514 can be a grid-shaped conductive pattern.
[0090] Please refer to Figure 2 In this embodiment, a plurality of first capacitive touch electrodes 512 are arranged at a first spacing P1 in the first direction y, and a plurality of first electromagnetic touch electrodes 514 are arranged at a second spacing P2 in the first direction y, wherein the first spacing P1 is substantially equal to the second spacing P2.
[0091] Please refer to Figure 2 , Figure 4 and Figure 6 In this embodiment, the first conductive layer 510 may be formed on the outer surface 120a of the substrate 120. Multiple first capacitive touch electrodes 512 and multiple first electromagnetic touch electrodes 514 may all belong to the first conductive layer 510, but this invention is not limited thereto. In this embodiment, the material of the first conductive layer 510 may include metal and metal oxides covering the metal, such as indium tin oxide, but this invention is not limited thereto.
[0092] Please refer to Figure 2 , Figure 5 and Figure 6 The integrated touch structure 500 further includes an insulating layer 520 disposed on a plurality of first capacitive touch electrodes 512 and a plurality of first electromagnetic touch electrodes 514. In this embodiment, the insulating layer 520 covers the first conductive layer 510. In this embodiment, the material of the insulating layer 520 may be an organic material, an inorganic material (e.g., silicon oxide, silicon nitride, silicon oxynitride, or a stacked layer of at least two of the above materials), or a combination thereof.
[0093] Please refer to Figure 2 , Figure 5 and Figure 6The integrated touch structure 500 also includes a plurality of second capacitive touch electrodes 532 disposed on the insulating layer 520 and located in the working area 122 of the substrate 120. The plurality of second capacitive touch electrodes 532 are arranged in a second direction x. Generally, each second capacitive touch electrode 532 extends in a first direction y. The first direction y intersects with the second direction x. In this embodiment, the first direction y and the second direction x may be substantially perpendicular. Please refer to... Figure 2 and Figure 5 In this embodiment, based on the consideration of light transmittance, the second capacitive touch electrode 532 can be a grid-shaped conductive pattern.
[0094] Please refer to Figure 2 , Figure 5 and Figure 6 The integrated touch structure 500 also includes a plurality of second electromagnetic touch electrodes 534 disposed on the insulating layer 520 and located in the working area 122 of the substrate 120. The plurality of second electromagnetic touch electrodes 534 are arranged in the second direction x. A plurality of second capacitive touch electrodes 532 are separated from the plurality of second electromagnetic touch electrodes 534. Each second capacitive touch electrode 532 is surrounded by a corresponding second electromagnetic touch electrode 534. For example, in this embodiment, the outer contour of the second capacitive touch electrode 532 is generally elongated, and the outer contour of the second electromagnetic touch electrode 534 is generally U-shaped. The generally U-shaped second electromagnetic touch electrode 534 is disposed beside the upper side, left side, and right side of the second capacitive touch electrode 532, but the invention is not limited thereto. Please refer to... Figure 2 and Figure 6 In this embodiment, based on the consideration of light transmittance, the second electromagnetic touch electrode 534 can be a grid-shaped conductive pattern.
[0095] Please refer to Figure 2 In this embodiment, a plurality of second capacitive touch electrodes 532 are arranged at a third spacing P3 in the second direction x, and a plurality of second electromagnetic touch electrodes 534 are arranged at a fourth spacing P4 in the second direction x, wherein the third spacing P3 is substantially equal to the fourth spacing P4.
[0096] Please refer to Figure 3 , Figure 5 and Figure 6 In this embodiment, the second conductive layer 530 may be formed on the insulating layer 520, which is disposed between the first conductive layer 510 and the second conductive layer 530. The plurality of second capacitive touch electrodes 532 and the plurality of second electromagnetic touch electrodes 534 may all belong to the second conductive layer 530, but this invention is not limited thereto. In this embodiment, the material of the second conductive layer 530 may include metal and metal oxides covering the metal, such as indium tin oxide, but this invention is not limited thereto.
[0097] Please refer to Figure 2 and Figure 3 The integrated touch structure 500 also includes multiple first capacitive touch traces L CX Each of the first electromagnetic touch electrodes 514 is electrically connected to a plurality of first capacitive touch electrodes 512. Specifically, in this embodiment, each first electromagnetic touch electrode 514 has a plurality of first main portions 514a located on opposite sides of a corresponding first capacitive touch electrode 512, and a first bent portion 514b connecting the plurality of first main portions 514a. The first bent portion 514b is connected to a corresponding first capacitive touch trace L. CX They cross each other in the fourth peripheral area 124d. The plurality of first main portions 514a and the first bent portions 514b of each first electromagnetic touch electrode 514 belong to the first conductive layer 510, and the first capacitive touch trace L... CX It has a first spanning portion 538 located in the fourth peripheral area 124d, the first spanning portion 538 belongs to the second conductive layer 530, and the first capacitive touch trace L CX The first crossing portion 538 crosses the first bend portion 514b of the first electromagnetic touch electrode 514 and is electrically connected to the first capacitive touch electrode 512 through the opening 522 of the insulating layer 520. The opening 522 of the insulating layer 520 is located in the fourth peripheral region 124d. That is, multiple first capacitive touch traces L CX The fourth peripheral area 124d is structurally connected to multiple first capacitive touch electrodes 512.
[0098] Please refer to Figure 2 The integrated touch structure 500 also includes multiple first electromagnetic touch trace pairs L EMX Each of the first electromagnetic touch traces pairs with L EMX Multiple first electromagnetic touch traces 516 are electrically connected to the two ends of a corresponding first electromagnetic touch electrode 514. Specifically, in this embodiment, each first electromagnetic touch trace is connected to L... EMX Multiple first electromagnetic touch traces 516 and their corresponding first electromagnetic touch electrodes 514 can all belong to the first conductive layer 510, and each first electromagnetic touch trace is paired with L EMX Multiple first electromagnetic touch traces 516 and corresponding first electromagnetic touch electrodes 514 can be directly connected in the third peripheral region 124c. That is, multiple first electromagnetic touch traces are connected to L... EMX The third peripheral area 124c is structurally connected to multiple first electromagnetic touch electrodes 514.
[0099] Please refer to Figure 2 and Figure 3 The integrated touch structure 500 also includes multiple second capacitive touch traces L CYEach of the two electrodes is electrically connected to a plurality of second capacitive touch electrodes 532. Specifically, in this embodiment, each second electromagnetic touch electrode 534 has a plurality of second main portions 534a located on opposite sides of a corresponding second capacitive touch electrode 532, and a second bent portion 534b connecting the plurality of second main portions 534a. The second bent portion 534b is connected to a corresponding second capacitive touch trace L. CY They cross over each other on the second peripheral area 124b. Second capacitive touch trace L CY It has a second spanning portion 518 located in the second peripheral area 124b, and a second capacitive touch trace L. CY The second crossing portion 518 belongs to the first conductive layer 510. The plurality of second main portions 534a and second curved portions 534b of each second electromagnetic touch electrode 534 belong to the second conductive layer 530. The second curved portion 534b of the second electromagnetic touch electrode 534 crosses the second capacitive touch trace L. CY The second spanning section 518, and the second capacitive touch trace L CY The second crossing portion 518 and the second capacitive touch electrode 532 are electrically connected to each other through an opening 524 in the insulating layer 520. The opening 524 in the insulating layer 520 is located in the second peripheral region 124b. That is, the second capacitive touch trace L... CY The second peripheral area 124b is structurally connected to a plurality of second capacitive touch electrodes 532.
[0100] Please refer to Figure 2 and Figure 3 The integrated touch structure 500 also includes multiple second electromagnetic touch trace pairs L EMY Each of the second electromagnetic touch traces pairs L EMY Multiple second electromagnetic touch traces 536 are electrically connected to the two ends of a corresponding second electromagnetic touch electrode 534, and the multiple second electromagnetic touch traces are connected to L EMY The first peripheral region 124a is structurally connected to a plurality of second electromagnetic touch electrodes 534. Specifically, in this embodiment, each second electromagnetic touch trace is paired with L... EMY Multiple second electromagnetic touch traces 536 and corresponding second electromagnetic touch electrodes 534 can all belong to the first conductive layer 510, and each second electromagnetic touch trace is paired with L EMY Multiple second electromagnetic touch traces 536 and a corresponding second electromagnetic touch electrode 534 can be directly connected in the first peripheral area 124a.
[0101] Please refer to Figure 2 It is worth noting that multiple first capacitive touch traces L CX The fourth peripheral area 124d is structurally connected to multiple first capacitive touch electrodes 512 (that is, multiple first capacitive touch traces L).CX (Extended from the fourth peripheral area 124d), and multiple first capacitive touch traces L CX After being pulled out from the fourth peripheral area 124d, it extends directly to the first peripheral area 124a to electrically connect to the electronic component 700; multiple first electromagnetic touch traces are connected to L. EMX The third peripheral area 124c is structurally connected to multiple first electromagnetic touch electrodes 514 (that is, multiple first electromagnetic touch traces are connected to L). EMX (Pulled out from the third peripheral area 124c), and multiple first electromagnetic touch traces to L EMX After being pulled out from the third peripheral area 124c, it extends directly from the third peripheral area 124c to the first peripheral area 124a, and is electrically connected to the electronic component 700; multiple second capacitive touch traces L CY The second peripheral area 124b is structurally connected to multiple second capacitive touch electrodes 532 (i.e., multiple second capacitive touch traces L). CY (Extended from the second peripheral area 124b), and multiple second capacitive touch traces L CY Extending sequentially from the second peripheral area 124b to the fourth peripheral area 124d and the first peripheral area 124a, they are electrically connected to the electronic component 700; multiple second electromagnetic touch traces are connected to L. EMY The first peripheral region 124a is structurally connected to a plurality of second electromagnetic touch electrodes 534 (that is, the plurality of second electromagnetic touch traces are connected to L). EMY (Pulled out from the first peripheral area 124a), and multiple second electromagnetic touch traces to L EMY It extends directly over the first peripheral region 124a to be electrically connected to the electronic component 700.
[0102] In short, multiple first capacitive touch traces L are electrically connected to multiple first capacitive touch electrodes 512 and multiple first electromagnetic touch electrodes 514 arranged in the first direction y. CX and multiple first electromagnetic touch traces to L EMX It is pulled out from two opposite positions (i.e., the fourth peripheral area 124d and the third peripheral area 124c); and multiple second capacitive touch lines L are electrically connected to multiple second capacitive touch electrodes 532 and multiple second electromagnetic touch electrodes 534 arranged in the second direction x. CY and multiple second electromagnetic touch traces to L EMY It is pulled out from two other relative positions (i.e., the second peripheral area 124b and the first peripheral area 124a).
[0103] Within the second peripheral area 124b, a second capacitive touch trace L is provided. CY However, multiple first capacitive touch traces L were not set up. CX Multiple first electromagnetic touch traces to L EMXand multiple second electromagnetic touch traces to L EMY Within the fourth peripheral area 124d, a first capacitive touch trace L is provided. CX and the second capacitive touch trace L CY However, multiple first electromagnetic touch traces were not set for L. EMX and multiple second electromagnetic touch traces to L EMY Within the third peripheral area 124c, multiple first electromagnetic touch control traces L are installed. EMX However, multiple first capacitive touch traces L were not set up. CX Multiple secondary capacitive touch traces L CY and multiple second electromagnetic touch traces to L EMY Within the first peripheral area 124a, multiple first capacitive touch traces L are provided. CX Multiple secondary capacitive touch traces L CY Multiple first electromagnetic touch traces to L EMX and multiple second electromagnetic touch traces to L EMY .
[0104] With the above wiring layout, the first capacitive touch wiring L can be made CX and the second capacitive touch trace L CY Having low capacitance, the first electromagnetic touch trace 516 and the second electromagnetic touch trace 536 have low resistance. Therefore, the touch device 10 possesses both excellent capacitive and electromagnetic touch performance, as described below... Figure 7 The data in Table 1 are used as examples to illustrate this.
[0105] Figure 7 This is a top view and perspective view of a comparative example touch device 10'. Figure 7 The substrate 120, integrated touch structure 500', and electronic components 700 of the touch device 10' are shown, while other components of the touch device 10' are omitted.
[0106] Figure 7 Comparative example of touch device 10' and Figure 2 The embodiment is similar to the touch device 10, the difference being that the wiring layout is different. Specifically, in Figure 7 In the comparative example, multiple first capacitive touch traces L CX The first capacitive touch trace L is pulled out from both ends of each first capacitive touch electrode 512 and extends through the third peripheral region 124c and the fourth peripheral region 124d to the first peripheral region 124a, and the first capacitive touch trace L is on the third peripheral region 124c. CX It also overlaps at least partially with the first electromagnetic touch trace 516.
[0107] Table 1 lists Figure 2 Implementation examples and Figure 7The first capacitive touch trace L in the comparative example CX Second capacitive touch trace L CY The capacitance and resistance of the first electromagnetic touch trace 516 and the second electromagnetic touch trace 536 are shown in Table 1. As can be seen from the data in Table 1, compared to the touch device 10' of the comparative example, the first capacitive touch trace L of the touch device 10 in this embodiment... CX The capacitance is small, and the resistance of the second electromagnetic touch trace 536 of the touch device 10 in the embodiment is low. Therefore, compared with the comparative example, the touch device 10 of the embodiment has better capacitance and electromagnetic touch performance.
[0108] Table 1
[0109]
[0110] It must be noted that the following embodiments use the component reference numerals and some content from the foregoing embodiments, with the same reference numerals used to represent the same or similar components, and descriptions of the same technical content omitted. For explanations of the omitted parts, please refer to the foregoing embodiments; these will not be repeated in the following embodiments.
[0111] Figure 8 This is a top view and perspective view of a touch device 10A according to another embodiment of the present invention. Figure 8 The substrate 120, integrated touch structure 500A, and electronic components 700 of the touch device 10A are shown, while other components of the touch device 10 are omitted.
[0112] Figure 9 This is a cross-sectional schematic diagram of a touch device 10A according to another embodiment of the present invention. Figure 9 correspond Figure 8 Section II-II'.
[0113] Figure 8 and Figure 9 The touch device 10A is similar to the aforementioned touch device 10, but the difference between the two is that the structures of the first electromagnetic touch lines 516, 516A and the second electromagnetic touch lines 536, 536A are different.
[0114] Specifically, in Figure 2 and Figure 6 In one embodiment, the first electromagnetic touch trace 516 is formed by a single first conductive layer 510, and the second electromagnetic touch trace 536 is formed by a single second conductive layer 530. However, in Figure 8 and Figure 9In the embodiment, the first electromagnetic touch trace 516A includes a first portion 516A-1 and a second portion 516A-2 belonging to the first conductive layer 510 and the second conductive layer 530, respectively, and the first portion 516A-1 and the second portion 516A-2 of the first electromagnetic touch trace 516A are connected in parallel; each of the second electromagnetic touch traces 536A includes a first portion 536A-1 and a second portion 536A-2 belonging to the first conductive layer 510 and the second conductive layer 530, respectively, and the first portion 536A-1 and the second portion 536A-2 of the second electromagnetic touch trace 536A are connected in parallel. Therefore, the resistance of the first electromagnetic touch trace 516A and the second electromagnetic touch trace 536A can be further reduced, thereby optimizing the electromagnetic touch performance of the touch device 10A.
Claims
1. A touch device, comprising: The substrate has a working area, a first peripheral area, a second peripheral area, a third peripheral area, and a fourth peripheral area, wherein the first peripheral area, the second peripheral area, the third peripheral area, and the fourth peripheral area are located outside the working area, the first peripheral area and the second peripheral area are respectively located on opposite sides of the working area, the third peripheral area is connected between the first peripheral area and the second peripheral area, and the fourth peripheral area is disposed opposite to the third peripheral area and connected between the first peripheral area and the second peripheral area; Electronic components are disposed in the first peripheral area of the substrate; Multiple first capacitive touch electrodes are disposed in the working area of the substrate and arranged in a first direction; A plurality of first electromagnetic touch electrodes are disposed in the working area of the substrate and arranged in the first direction, wherein the first capacitive touch electrodes are separated from the first electromagnetic touch electrodes, and each first capacitive touch electrode is surrounded by a corresponding first electromagnetic touch electrode. An insulating layer is disposed on the first capacitive touch electrodes and the first electromagnetic touch electrodes; Multiple second capacitive touch electrodes are disposed on the insulating layer, located in the working area of the substrate, and arranged in a second direction, wherein the first direction and the second direction are interleaved; Multiple second electromagnetic touch electrodes are disposed on the insulating layer, located in the working area of the substrate, and arranged in the second direction, wherein the second capacitive touch electrodes are separated from the second electromagnetic touch electrodes, and each second capacitive touch electrode is surrounded by a corresponding second electromagnetic touch electrode. Multiple first capacitive touch traces are electrically connected to the first capacitive touch electrodes, wherein the first capacitive touch traces pulled out from the fourth peripheral area are structurally connected to the first capacitive touch electrodes, and the first capacitive touch traces extend directly from the fourth peripheral area to the first peripheral area to be electrically connected to the electronic component. Multiple first electromagnetic touch trace pairs, wherein multiple first electromagnetic touch traces of each first electromagnetic touch trace pair are electrically connected to both ends of a corresponding first electromagnetic touch electrode, the first electromagnetic touch trace pairs pulled out from the third peripheral area are structurally connected to the first electromagnetic touch electrodes, and the first electromagnetic touch trace pairs extend directly from the third peripheral area to the first peripheral area to be electrically connected to the electronic component; Multiple second capacitive touch traces are electrically connected to the second capacitive touch electrodes, wherein the second capacitive touch traces pulled out from the second peripheral area are structurally connected to the second capacitive touch electrodes, and the second capacitive touch traces extend sequentially from the second peripheral area to the fourth peripheral area and the first peripheral area to be electrically connected to the electronic component. as well as Multiple pairs of second electromagnetic touch traces, wherein multiple second electromagnetic touch traces of each pair are electrically connected to both ends of a corresponding second electromagnetic touch electrode. The pairs of second electromagnetic touch traces pulled out from the first peripheral area are structurally connected to the second electromagnetic touch electrodes, and the pairs of second electromagnetic touch traces extend directly on the first peripheral area to be electrically connected to the electronic component.
2. The touch device as claimed in claim 1, wherein each first electromagnetic touch electrode has a plurality of first main portions located on opposite sides of a corresponding first capacitive touch electrode and a first curved portion connecting the first main portions, and the first curved portion and a corresponding first capacitive touch trace cross each other in the fourth peripheral area.
3. The touch device of claim 2, wherein the first main portions of each of the first electromagnetic touch electrodes, the first bent portion of each of the first electromagnetic touch electrodes, and at least a portion of a first electromagnetic touch trace electrically connected to the first electromagnetic touch trace pair of the first electromagnetic touch electrodes belong to a first conductive layer, the first capacitive touch trace has a first crossing portion located in the fourth peripheral region, the first crossing portion of the first capacitive touch trace belongs to a second conductive layer, and the insulating layer is disposed between the first conductive layer and the second conductive layer.
4. The touch device as claimed in claim 2, wherein each second electromagnetic touch electrode has a plurality of second main portions located on opposite sides of a corresponding second capacitive touch electrode and a second curved portion connecting the second main portions, and the second curved portion and a corresponding second capacitive touch trace cross each other in the second peripheral area.
5. The touch device of claim 4, wherein the second capacitive touch trace has a second crossing portion located in the second peripheral region, the second crossing portion of the second capacitive touch trace belongs to the first conductive layer, the second main portions of each second electromagnetic touch electrode, the second bent portion of each second electromagnetic touch electrode, and at least a portion of a second electromagnetic touch trace electrically connected to the second electromagnetic touch trace pair of the second electromagnetic touch electrode belong to the second conductive layer, and the insulating layer is disposed between the first conductive layer and the second conductive layer.
6. The touch device of claim 1, wherein the first capacitive touch electrodes are arranged at a first spacing in the first direction, the first electromagnetic touch electrodes are arranged at a second spacing in the first direction, and the first spacing is substantially equal to the second spacing.
7. The touch device of claim 6, wherein the second capacitive touch electrodes are arranged at a third spacing in the second direction, the second electromagnetic touch electrodes are arranged at a fourth spacing in the second direction, and the third spacing is substantially equal to the fourth spacing.
8. The touch device of claim 1, wherein the insulating layer is located between the first conductive layer and the second conductive layer, each of the first electromagnetic touch traces includes a first portion and a second portion belonging to the first conductive layer and the second conductive layer respectively, and the first portion and the second portion of each of the first electromagnetic touch traces are connected in parallel.
9. The touch device of claim 8, wherein each of the second electromagnetic touch traces includes a first portion and a second portion belonging to the first conductive layer and the second conductive layer, respectively, and the first portion and the second portion of each of the second electromagnetic touch traces are connected in parallel.
Citation Information
Patent Citations
Touch screen and display device
CN103941946A
Touch module and manufacturing method thereof
CN104049814A