Connecting structure of electrode pins and touch screen
By connecting both ends of the touch electrode to the same binding pin through different peripheral traces on medium and large-size touch screens, the problems of uneven voltage distribution and complex wiring are solved, and the uniformity of voltage distribution and binding pin are achieved. Reduced foot count.
Patent Information
- Application Number
- CN202420061056.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-10
AI Technical Summary
Due to the long size of the driving electrodes and induction electrodes of medium and large-size touch screens, the voltage distribution is uneven, and they need to be connected to different binding pins through peripheral traces at both ends, which increases the difficulty of wiring and the risk of signal interference.
A connection structure of electrode pins is adopted, in which both ends of the touch electrode are connected to the same binding pin through different peripheral traces, forming a uniform voltage distribution, reducing the number of binding pins.
The uniformity of voltage distribution on medium and large-size touch screens is achieved, reducing the number of bound pins and wiring complexity, and reducing signal interference.
Smart Images
Figure CN222189864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to touch screen technology, in particular to a connection structure of electrode pins and a touch screen. Background Art
[0002] The existing capacitive touch screen includes driving electrodes and sensing electrodes. The driving electrode is used to receive a touch driving signal from a driving chip through a binding pin, and the sensing electrode is used to output a touch sensing signal to the driving chip through the binding pin.
[0003] For small touch screens, Figure 1 As described above, the driving electrode 1' and the sensing electrode 2' are shorter in size, and the voltage attenuation from one end of the driving electrode 1' or the sensing electrode 2' to the other end is smaller. Therefore, the voltage distribution on the driving electrode 1' and the sensing electrode 2' of the small-sized touch screen is relatively uniform, and the driving electrode 1' and the sensing electrode 2' are connected to the binding pin 4' only at one end through the peripheral wiring 3'; however, for medium and large-sized touch screens, Figure 2 As shown, the driving electrode 1' and the sensing electrode 2' are relatively long in size, and the voltage attenuates greatly from one end of the driving electrode 1' or the sensing electrode 2' to the other end. Therefore, the driving electrode 1' and the sensing electrode 2' of the medium and large-sized touch screen may have an uneven voltage distribution problem, and the driving electrode 1' and the sensing electrode 2' need to be connected to different binding pins 4' at both ends through peripheral wiring 3'.
[0004] However, the driving electrodes 1' and the sensing electrodes 2' of the medium and large-sized touch screens are connected to different binding pins 4' at both ends through the peripheral wiring 3', which will undoubtedly increase the number of binding pins 4', causing difficulties in wiring and pin production. Sometimes, the peripheral wiring 3' of the driving electrodes 1' and the sensing electrodes 2' need to cross each other to complete the wiring, which will cause signal interference; and the circuit board bound thereto also needs to be of a larger size, and the difficulty of binding the circuit board and the difficulty of bonding the ACF glue will also increase accordingly. Utility Model Content
[0005] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides a connection structure of electrode pins, which is used in a touch screen and can reduce the number of binding pins on the touch screen.
[0006] The utility model provides a touch screen, comprising the above-mentioned connection structure.
[0007] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0008] A connection structure of electrode pins is used in a touch screen; the connection structure comprises a touch electrode and a binding pin, the touch electrode has a first end and a second end opposite to each other, and the first end and the second end of the touch electrode are respectively connected to the same binding pin through different peripheral wirings.
[0009] Furthermore, the touch electrodes are parallel to the binding pins.
[0010] Furthermore, the touch electrode is perpendicular to the binding pin.
[0011] Further, the binding pin includes a third end and a fourth end that are arranged opposite to each other, the first end of the touch electrode is connected to the third end of the binding pin through a peripheral wiring, and the second end of the touch electrode is connected to the third end of the binding pin through another peripheral wiring.
[0012] Furthermore, the peripheral wiring is silver paste wiring.
[0013] A touch screen comprises a first touch electrode, a second touch electrode, a first binding pin and a second binding pin, wherein a transparent insulating layer is arranged between the first touch electrode and the second touch electrode; the first touch electrode and the first binding pin, and / or the second touch electrode and the second binding pin are connected by using the above-mentioned connection structure.
[0014] Furthermore, the touch screen is a GG, GF or FF touch screen, that is, the first touch electrodes serve as the first electrode layer of the touch screen, the second touch electrodes serve as the second electrode layer of the touch screen, and a transparent insulating layer is provided between the first electrode layer and the second electrode layer.
[0015] Furthermore, the touch screen is an OGS touch screen, that is, the first touch electrodes and the second touch electrodes serve as the same electrode layer of the touch screen, and an insulating bridge is provided between the first touch electrodes and the second touch electrodes.
[0016] Furthermore, the touch screen has a visible area and a border area, the border area is located outside the visible area, the first touch electrode and the second touch electrode are located in the visible area of the touch screen, and the first binding pin, the second binding pin and the peripheral wiring are located in the non-visible area of the touch screen.
[0017] Further, the first touch electrodes are driving electrodes, and the second touch electrodes are sensing electrodes, or the first touch electrodes are sensing electrodes, and the second touch electrodes are touch electrodes.
[0018] The utility model has the following beneficial effects: the connection structure of the utility model connects the two ends of the touch electrode to the same binding pin through different peripheral routings respectively. When in use, the binding pin transmits the touch driving signal from the driver chip through a peripheral routing to the first end of the touch electrode, and transmits it to the second end of the touch electrode through another peripheral routing, or the binding pin transmits the touch sensing signal from the first end of the touch electrode to the driver chip through a peripheral routing, and transmits the touch sensing signal from the second end of the touch electrode to the driver chip through another peripheral routing. Since the touch electrode inputs and outputs touch signals from both ends at the same time, the voltage value of one touch signal gradually decays from the first end to the second end of the touch electrode, and the voltage value of the other touch signal gradually decays from the second end to the first end of the touch electrode. The superposition of the two touch signals can form a uniform voltage distribution on the touch electrode; and the first end and the second end of the touch electrode share the same binding pin, so there is no need to increase the number of binding pins on the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of an existing small-sized touch screen.
[0020] Figure 2 It is a schematic diagram of the structure of existing medium and large-sized touch screens.
[0021] Figure 3 This is a structural schematic diagram of the connection structure provided by the utility model.
[0022] Figure 4 This is a structural schematic diagram of another connection structure provided by the utility model.
[0023] Figure 5 This is a structural schematic diagram of the touch screen provided by the utility model.
[0024] Figure 6 This is a schematic structural diagram of another touch screen provided by the utility model.
[0025] Figure 7 This is a schematic structural diagram of another touch screen provided by the utility model. Implementation
[0026] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1
[0030] like Figure 3 and 4 As shown, a connection structure of an electrode pin is used in a touch screen; the connection structure includes a touch electrode 100 and a binding pin 200, the touch electrode 100 has a first end 101 and a second end 102 opposite to each other, and the first end 101 and the second end 102 of the touch electrode 100 are respectively connected to the same binding pin 200 through different peripheral traces 30a and 30b.
[0031] The connection structure of the utility model connects the two ends of the touch electrode 100 to the same binding pin 200 through different peripheral wirings 30a and 30b, respectively. When in use, the binding pin 200 transmits the touch driving signal from the driver chip to the first end 101 of the touch electrode 100 through one peripheral wiring 30a, and transmits it to the second end 102 of the touch electrode 100 through another peripheral wiring 30b, or the binding pin 200 transmits the touch sensing signal from the first end 101 of the touch electrode 100 to the driver chip through one peripheral wiring 30a, and transmits it to the second end 102 of the touch electrode 100 through another peripheral wiring 30b. The touch sensing signal of the second end 102 of the touch electrode 100 is transmitted to the driving chip. Since the touch electrode 100 inputs and outputs touch signals from both ends at the same time, the voltage value of one touch signal gradually decays from the first end 101 of the touch electrode 100 to the second end 102, and the voltage value of the other touch signal gradually decays from the second end 102 of the touch electrode 100 to the first end 101. The superposition of the two touch signals can form a uniform voltage distribution on the touch electrode 100; and the first end 101 and the second end 102 of the touch electrode 100 share the same binding pin 200, so there is no need to increase the number of binding pins 200 on the touch screen.
[0032] The touch electrode 100 is a driving electrode or a sensing electrode of the touch screen. When the touch electrode 100 is a driving electrode, the binding pin 200 transmits a touch driving signal from a driving chip to a first end 101 of the touch electrode 100 through a peripheral wiring 30a, and transmits it to a second end 102 of the touch electrode 100 through another peripheral wiring 30b; when the touch electrode 100 is a sensing electrode, the binding pin 200 transmits a touch sensing signal from the first end 101 of the touch electrode 100 to the driving chip through a peripheral wiring 30a, and transmits a touch sensing signal from the second end 102 of the touch electrode 100 to the driving chip through another peripheral wiring 30b.
[0033] The touch screen includes a horizontal direction and a vertical direction. When the touch electrode 100 is a driving electrode, the touch electrode 100 is parallel to the horizontal direction of the touch screen and perpendicular to the vertical direction of the touch screen; when the touch electrode 100 is a sensing electrode, the touch electrode 100 is perpendicular to the horizontal direction of the touch screen and parallel to the vertical direction of the touch screen.
[0034] like Figure 3 As shown, the touch electrode 100 is perpendicular to the binding pin 200, or as shown in Figure 4 As shown, the touch electrode 100 is parallel to the binding pin 200 .
[0035] Specifically, the binding pins 200 are perpendicular to their corresponding sides on the touch screen. When the binding pins 200 are located on the lateral sides of the touch screen, the binding pins 200 are parallel to the touch electrodes 100 serving as driving electrodes and perpendicular to the touch electrodes 100 serving as sensing electrodes. When the binding pins 200 are located on the longitudinal sides of the touch screen, the binding pins 200 are perpendicular to the touch electrodes 100 serving as driving electrodes and parallel to the touch electrodes 100 serving as sensing electrodes.
[0036] Of course, the directional relationship between the touch electrode 100 and the binding pin 200 is not limited to parallel and vertical. According to the specific structural requirements of the touch screen, the touch electrode 100 and the binding pin 200 may also adopt other directional relationships, such as being set at a specific angle.
[0037] Preferably, the binding pin 200 includes a third end 201 and a fourth end 202 that are relatively arranged, the first end 101 of the touch electrode 100 is connected to the third end 201 of the binding pin 200 through a peripheral trace 30a, and the second end 102 of the touch electrode 100 is connected to the third end 202 of the binding pin 200 through another peripheral trace 30b.
[0038] In this embodiment, the peripheral wirings 30a and 30b are preferably, but not limited to, silver paste wirings, which are formed by processes such as screen printing or laser etching. Embodiment 2
[0039] like Figure 5-7 As shown, a touch screen includes a first touch electrode 110, a second touch electrode 120, a first binding pin 210 and a second binding pin 220, and the first touch electrode 110 and the first binding pin 210, and / or the second touch electrode 120 and the second binding pin 220 are connected using the connection structure described in Example 1.
[0040] The first touch electrodes 110 are driving electrodes, and the second touch electrodes 120 are sensing electrodes; alternatively, the first touch electrodes 110 are sensing electrodes, and the second touch electrodes 120 are touch electrodes 100 .
[0041] When the touch screen is a GG, GF or FF touch screen, that is, the first touch electrode 110 is used as the first electrode layer of the touch screen, the second touch electrode 110 is used as the second electrode layer of the touch screen, and a transparent insulating layer is provided between the first electrode layer and the second electrode layer. The transparent insulating layer is a glass substrate, a film substrate, an OC insulating glue or an inorganic non-metallic oxide.
[0042] When the touch screen is an OGS touch screen, that is, the first touch electrode 110 and the second touch electrode 120 are used as the same electrode layer of the touch screen, an insulating bridge is provided between the first touch electrode 110 and the second touch electrode 120. The insulating bridge is an OC insulating bridge.
[0043] The touch screen has a visible area and a frame area, the frame area is located outside the visible area, the first touch electrode 110 and the second touch electrode 120 are located in the visible area of the touch screen, and the first binding pin 210, the second binding pin 220 and the peripheral traces 30a and 30b are located in the non-visible area of the touch screen.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A connection structure of electrode pins, used in a touch screen; the connection structure comprises touch electrodes and binding pins, characterized in that: The touch electrode has a first end and a second end opposite to each other. The first end and the second end of the touch electrode are respectively connected to the same binding pin through different peripheral wirings.
2. The connection structure according to claim 1, characterized in that: The touch electrodes are parallel to the binding pins.
3. The connection structure according to claim 1, characterized in that: The touch electrodes are perpendicular to the binding pins.
4. The connection structure according to claim 1, characterized in that: The binding pin includes a third end and a fourth end that are relatively arranged, the first end of the touch electrode is connected to the third end of the binding pin through a peripheral trace, and the second end of the touch electrode is connected to the third end of the binding pin through another peripheral trace.
5. The connection structure according to claim 1, characterized in that: The peripheral wiring is silver paste wiring.
6. A touch screen, characterized in that: It includes a first touch electrode, a second touch electrode, a first binding pin and a second binding pin, wherein a transparent insulating layer is arranged between the first touch electrode and the second touch electrode; the first touch electrode and the first binding pin, and / or the second touch electrode and the second binding pin are connected by using the connection structure described in any one of claims 1 to 5.
7. The touch screen according to claim 6, characterized in that: The touch screen is a GG, GF or FF touch screen, that is, the first touch electrodes serve as the first electrode layer of the touch screen, the second touch electrodes serve as the second electrode layer of the touch screen, and a transparent insulating layer is provided between the first electrode layer and the second electrode layer.
8. The touch screen according to claim 6, characterized in that: The touch screen is an OGS touch screen, that is, the first touch electrodes and the second touch electrodes serve as the same electrode layer of the touch screen, and an insulating bridge is provided between the first touch electrodes and the second touch electrodes.
9. The touch screen according to claim 6, characterized in that: The touch screen has a visible area and a frame area, the frame area is located outside the visible area, the first touch electrode and the second touch electrode are located in the visible area of the touch screen, and the first binding pin, the second binding pin and the peripheral wiring are located in the non-visible area of the touch screen.
10. The touch screen according to claim 9, characterized in that: The first touch electrodes are driving electrodes, and the second touch electrodes are sensing electrodes; or the first touch electrodes are sensing electrodes, and the second touch electrodes are touch electrodes.