Touch sensing sheet structure
The touch sensing sheet structure with a central hollow design and dual signal lines addresses issues of light attenuation and bubble formation, improving brightness and touch accuracy while reducing costs and enhancing stability.
Patent Information
- Application Number
- CN202420895755.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing sensor chip designs using ITO or PEDOT processes cause light attenuation, bubble formation, and require adhesion to a touch panel, leading to reduced light brightness and potential for erroneous touch detection.
A touch sensing sheet structure with a central hollow design featuring a CTP film and dual signal lines, connected via a wire tail connector, which avoids circuit visibility, reduces bubble formation, and enhances touch accuracy by distinguishing touch areas based on signal line proximity.
The solution improves light brightness, prevents bubble formation, reduces manufacturing costs, and enhances touch detection accuracy by differentiating touch positions accurately, thereby increasing the product's stability and service life.
Smart Images
Figure CN222260029U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensing sheets, and in particular to a touch sensing structure of a sensing sheet. Background Art
[0002] The existing sensor chip design adopts ITO process (conductive film glass) or PEDOT process (transparent conductive film). The sensor chip wiring can be seen under the transparent lampshade. When the LED is lit, it will also cause a certain attenuation of the light source. In addition, bubbles are easily generated when the sensor chip is attached to the LENS panel (touch panel), especially in high temperature and high humidity environments. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a touch sensing sheet installation structure with sensitive touch distinction, higher light brightness and no need to adhere to a touch panel and a conductive film in view of the above-mentioned deficiencies in the prior art.
[0004] In order to achieve the above-mentioned purpose, the following technical scheme is adopted: a touch sensing sheet structure, including a sensing sheet body, one end of which is connected to a wire tail connector, the sensing sheet body including a CTP film with a hollow center, the CTP film having a first signal line arranged around the hollow center, the CTP film having a second signal line arranged around the outer edge, the second signal line being arranged at intervals on the periphery of the first signal line, and the first signal line and the second signal line being connected to the wire tail connector.
[0005] By adopting the above technical solution, by adopting a central hollow design, it is possible to avoid seeing the circuit routing in the center of the sensor body. The human body is conductive. If only one signal line is set, when the finger touches the inner circle or outer circle of the signal line, when the distance between the touching position and the signal line is the same, it will cause erroneous collection, so it is impossible to determine whether the touch is valid. By adding a second signal line at an interval on the periphery of the first signal line, the internal space surrounded by the first signal line forms a touch sensing area, that is, the central hollow part (equivalent to the inner circle), and the outer edge of the second signal line is equivalent to the outer circle. When the finger touches the inner circle area, it is closer to the first signal line and farther from the second signal line; when the finger touches the outer circle area, it is closer to the second signal line and farther from the first signal line. By connecting with the signal line The different distances between them can make the distinction more accurate and avoid the occurrence of false collection. Since CTP film is used, there is no need to fit the LENS panel. Since the center is hollowed out, no bubbles will be generated when the film is pasted. At the same time, since the use of PEDOT process is reduced, the cost is lower. Since the center is hollowed out, the wiring of the center of the sensor sheet cannot be seen, so the brightness of the LED light can be higher and more beautiful and eye-catching. One side of the CTP film is covered with a foam layer, and the other side of the CTP film is covered with an ink layer. The ink layer has a good anti-light channeling effect, and the foam layer prevents the finger from pressing directly on the first signal line and the second signal line on the CTP film, which plays a role of pressure buffering, and can prevent the first signal line and the second signal line from being damaged, thereby increasing the stability and service life of the product.
[0006] A touch sensing sheet structure can be further configured as follows: the line tail connector includes a connection end connected to a CTP film and a wiring terminal for electrical connection, and the first signal line and the second signal line pass through the connection end and are electrically connected to the wiring terminal.
[0007] By adopting the above technical solution, the first signal line and the second signal line are guided and connected through the connecting terminal and can also play a protective role, and the connecting terminal is used for connecting the touch sensor sheet with the MCU of the car, so as to distinguish the touch area according to the touch value difference area and judge whether the touch is valid.
[0008] A touch sensing sheet structure can be further configured as follows: both the upper and lower surfaces of the connecting end are covered with wire tail foam.
[0009] By adopting the above technical solution, the wire tail foam is used to protect the connection end, thereby preventing damage to the first signal line and the second signal line in the connection end during assembly, thereby increasing the service life of the product.
[0010] A touch sensing sheet structure can be further configured as follows: the width of the terminal is greater than the width of the connection terminal, a reinforcing sheet is attached to one side of the terminal, and at least two grounding wires are provided between the reinforcing sheet and the terminal and located on both sides of the width direction of the terminal.
[0011] By adopting the above technical solution, the reinforcing plate is used to limit the connecting ends of the ground wire and the first signal wire and the second signal wire to prevent them from falling out during use. The reinforcing plate also has a high strength, making the connecting terminal more firm and stable as a whole. At the same time, since the reinforcing plate needs to limit the ground wire, the first signal wire and the second signal wire at the same time, and the connecting end only needs to allow the first signal wire and the second signal wire to pass through, its width should be wider than the width of the connecting end.
[0012] A touch sensing sheet structure may be further configured as follows: each grounding wire is bent and placed in the width direction of the connection terminal to form at least two grounding openings.
[0013] By adopting the above technical solution, each grounding wire is bent to form at least two grounding openings. Four grounding openings are formed by bending the grounding wires on both sides respectively. By bending the grounding wires, the covering area can be increased during the covering, making the covering more stable. At the same time, multiple grounding openings can also be formed to make the current grounding more stable.
[0014] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model.
[0016] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the explosion state.
[0017] Figure 3 For the utility model embodiment Figure 2 Enlarged view of part A in .
[0018] Figure 4 For the utility model embodiment Figure 2 Enlarged view of part B in .
[0019] In the figure: 1. sensor body; 2. CTP film; 3. foam layer; 4. ink layer; 5. wire end connector; 11. first signal line; 12. second signal line; 51. connection end; 52. wiring end; 53. reinforcement sheet; 54. grounding wire; 55. grounding port; 56. wire end foam. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Example: Figure 1-Figure 4A touch sensing sheet structure shown in the figure includes a sensing sheet body 1, one end of the sensing sheet body 1 is connected to a wire tail connector 5, the sensing sheet body 1 includes a CTP film 2 with a hollow center, and the center hollow design can avoid seeing the sensing sheet wiring in the center of the sensing sheet body 1. Since the CTP film 2 is used, there is no need to fit the LENS panel. Since the center is hollow, no bubbles will be generated when the film is pasted. At the same time, since the use of the PEDOT process is reduced, the cost is lower. At the same time, since the center is hollow, the wiring in the center of the sensing sheet cannot be seen, so the brightness of the LED light can be higher and more beautiful and eye-catching. The CTP film 2 is covered with a foam layer 3 on one side, and the CTP film 2 is covered with an ink layer 4 on the other side. One end of the CTP film 2 is connected to the wire tail connector 5, and the wire tail connector 5 includes a connecting end 51 connected to the CTP film 2 and a wiring terminal 52 for connecting to electricity. The upper and lower surfaces of the connecting end 51 are covered with wire tail foam 56. The wire tail foam 56 It is used to protect the connection end 51, prevent the first signal line 11 and the second signal line 12 in the connection end 51 from being damaged during assembly, and increase the service life of the product. The CTP film 2 is provided with a first signal line 11 around the inner wall of the central hollow part, and the CTP film 2 is provided with a second signal line 12 around the outer edge. The second signal line 12 is arranged at intervals on the outer periphery of the first signal line 11. The human body is conductive. If only one signal line is provided, when a finger touches the inner circle or the outer circle of the signal line, when the distance between the touching position and the signal line is the same, it will cause erroneous collection, so it is impossible to determine whether the touch is valid. By adding the second signal line 12 at intervals on the outer periphery of the first signal line 11, the internal space surrounded by the first signal line 11 forms a touch sensing area, that is, the central hollow part (equivalent to the inner circle), and the outer edge of the second signal line 12 is equivalent to the outer circle. When the finger touches the inner circle area, it is closer to the first signal line 11 and farther from the second signal line 12;When the finger touches the outer circle area, it is closer to the second signal line 12 and farther from the first signal line 11. The different distances from the signal lines can make the distinction more accurate, and can also avoid the occurrence of erroneous collection, thereby meeting the needs of drivers and passengers. The first signal line 11 and the second signal line 12 are electrically connected to the wire tail connector 5 respectively. The width of the wiring terminal 52 is greater than the width of the connecting terminal 51. A reinforcing sheet 53 is attached to one side of the wiring terminal 52. At least two grounding wires 54 located on both sides of the width direction of the wiring terminal 52 are provided between the reinforcing sheet 53 and the wiring terminal 52. Each of the grounding wires 54 is bent and placed in the width direction of the wiring terminal 52 to form at least two grounding ports 55. Each grounding wire 54 is bent to form at least two grounding ports 55. By bending the grounding wires 53 on both sides respectively The four grounding ports 55 are formed by bending the grounding wire 53, so that the covering area can be increased during the covering, so that the covering is more stable. At the same time, multiple grounding ports 55 can be formed to make the current grounding more stable. The reinforcing sheet 53 is used to limit the connection ends of the grounding wire 54 and the first signal line 11 and the second signal line 12 to prevent them from falling out during use. The reinforcing sheet 53 also has a high strength, making the terminal 52 more firm and stable as a whole. At the same time, the reinforcing sheet 53 needs to limit the grounding wire 54, the first signal line 11 and the second signal line 12 at the same time, and the connecting end 51 only needs to allow the first signal line 11 and the second signal line 12 to pass through, so its width is wider than the width of the connecting end 51. The first signal line 11 and the second signal line 12 pass through the connecting end 51 and are electrically connected to the connecting end 52. ;
[0022] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A touch sensing sheet structure, comprising a sensing sheet body (1), one end of the sensing sheet body (1) being connected to a wire tail connector (5), characterized in that: The sensor sheet body (1) comprises a CTP film (2) with a hollow center, wherein the CTP film (2) is provided with a first signal line (11) around the hollow center, and the CTP film (2) is provided with a second signal line (12) around the outer edge, wherein the second signal line (12) is arranged at intervals outside the first signal line (11), and the first signal line (11) and the second signal line (12) are connected to a line tail connector (5).
2. The touch sensing sheet structure according to claim 1, characterized in that: The end-of-line connector (5) comprises a connection end (51) connected to the CTP film (2) and a wiring terminal (52) for connecting electricity, and the first signal line (11) and the second signal line (12) pass through the connection end (51) and are electrically connected to the wiring terminal (52).
3. The touch sensing sheet structure according to claim 2, characterized in that: The upper and lower surfaces of the connecting end (51) are both covered with wire tail foam (56).
4. The touch sensing sheet structure according to claim 2, characterized in that: The width of the wiring terminal (52) is greater than the width of the connecting terminal (51); one side of the wiring terminal (52) is covered with a reinforcing sheet (53); and at least two grounding wires (54) are provided between the reinforcing sheet (53) and the wiring terminal (52) and are located on both sides of the width direction of the wiring terminal (52).
5. The touch sensing sheet structure according to claim 4, characterized in that: Each of the grounding wires (54) is bent and placed in the width direction of the connection terminal (52) to form at least two grounding openings (55).