Touch point smoothing touch screen film
By employing pointed discharge electrodes and a raised structure on the touchscreen film, the problem of poor touch point smoothness caused by electrode signal attenuation on large touchscreens is solved, thus achieving smooth and comfortable touch actions and improved display effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU HONGDA NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-09
AI Technical Summary
On large touchscreens, especially those exceeding 100 inches, the larger the screen, the more severe the attenuation of the electrode signal, making it difficult to achieve high-precision smooth touch point perception, resulting in unsmooth touch actions.
The touchscreen film based on the tip discharge mechanism is used. By setting tip discharge electrodes and protrusion structures on the electrode array, the edge electric field distribution is enhanced by the tip effect, the sensing distance is extended, the electric field blind zone is reduced, and non-contact floating touch is realized.
It improves the smoothness and comfort of touch actions, reduces manufacturing complexity and cost, and at the same time ensures the display effect of the screen.
Smart Images
Figure CN224341870U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical engineering, specifically to a touch screen. Background Technology
[0002] Touchscreens enable users to interact directly with electronic devices by sensing touch input. Users can directly touch icons, text, or buttons on the screen with their fingers or a stylus to perform operations such as clicking, dragging, and scrolling. This intuitive operation method greatly simplifies the operation of traditional devices and improves the user experience. Due to its intuitive and convenient interaction method, it is commonly used in education, business, and other fields.
[0003] Traditional capacitive screens rely on high-density electrode grids, but on large touchscreens, especially those exceeding 100 inches, the larger the screen, the more severe the electrode signal attenuation, making it difficult to arrange the touchscreen electrodes with high precision, resulting in poor touch point smoothness and perception.
[0004] Therefore, improving the smoothness perception by modifying the touch screen film to make touch actions smooth and comfortable has become an urgent technical problem to be solved. Utility Model Content
[0005] The purpose of this invention is to provide a long-distance touchscreen film based on a tip discharge mechanism to solve at least one of the above-mentioned technical problems.
[0006] The technical problem solved by this utility model can be achieved by the following technical solution:
[0007] A touch point smooth sensing touch screen film includes a touch film having an isolation layer as a substrate and two electrode arrays arranged on both sides of the isolation layer, namely a first electrode array and a second electrode array, and also includes a plastic substrate, which is bonded to the surface of the isolation layer.
[0008] A tip discharge electrode is embedded in the plastic substrate, and the tip discharge electrode has a large end and a small end.
[0009] The small end of the tip discharge electrode is located on the plastic substrate away from the insulating layer;
[0010] The first electrode array includes a plurality of meridional electrode strips, on which block-shaped aluminum plating layers are disposed at intervals, and the block-shaped aluminum plating layers serve as meridional electrode units;
[0011] The second electrode array includes a plurality of latitudinal electrode strips, on which block-shaped aluminum plating layers are disposed at intervals, and the block-shaped aluminum plating layers serve as latitudinal electrode units;
[0012] The meridional electrode unit has protrusions on its left and right sides, which serve as meridional protrusions;
[0013] The latitudinal electrode unit has protrusions on its left and right sides, which serve as latitudinal protrusions;
[0014] The longitudinal and latitudinal protrusions are arranged alternately.
[0015] The tail of one of the meridional protrusions is provided with at least two tip discharge electrodes, the large end of which is electrically connected to the meridional protrusion.
[0016] The tail of one of the latitudinal protrusions is provided with at least two tip discharge electrodes, the large end of which is electrically connected to the latitudinal protrusion.
[0017] In the above design, without increasing the density of the longitudinal and latitudinal protrusions, the smoothness perception is improved, making the touch action smooth and comfortable. The tip discharge electrode utilizes the tip effect (charge accumulates in areas with high curvature) to enhance the edge electric field distribution, enabling the capacitive touch screen system to detect weak capacitance changes when a finger or conductor approaches but does not directly contact it. The tip discharge electrode is conductively connected to the tails of the longitudinal and latitudinal protrusions, extending the sensing distance and forming a sensing area in the space between the longitudinal and latitudinal protrusions, reducing electric field blind spots, making the touch action smooth and comfortable, reducing process complexity and cost, and helping to ensure the display effect of the screen.
[0018] Further optimization involves the use of a hollow structure for the tip discharge electrode.
[0019] In the above design, the hollow tip discharge electrode can concentrate the electric field lines more efficiently, forming a stronger edge field strength and improving the sensitivity to touch signals.
[0020] Further optimization involves the large-end aperture of the tip discharge electrode being between 0.1 mm and 0.8 mm, and the small-end diameter of the tip discharge electrode being less than 0.1 mm.
[0021] Further optimization involves filling the hollow tip discharge electrode with a volatile curing adhesive.
[0022] In the above design, the colloid solidifies to form a solid support, preventing the tip discharge electrode from deforming or breaking due to mechanical vibration or external impact (such as large screen transportation or multiple people touching it), thus improving the electrode life.
[0023] Further optimization involves providing recesses on both the upper and lower sides of the meridional electrode unit, serving as meridional recesses;
[0024] The latitudinal electrode unit has recesses on its upper and lower sides, which serve as latitudinal recesses.
[0025] Further optimization involves the warp electrode unit and the weft electrode unit overlapping at 90° in space, with the warp protrusion overlapping the weft recess.
[0026] In the above design, the overlap of the longitudinal protrusions and the latitudinal recesses can minimize gaps and reduce blind spots during touch, ensuring that information can be collected with every touch. At the same time, the complementary interlocking design of the longitudinal protrusions and the latitudinal recesses reduces the overall thickness fluctuation of the electrode layer and adapts to complex surfaces.
[0027] This invention utilizes the tip discharge electrode to enhance the edge electric field distribution (charge accumulates in areas of high curvature), enabling capacitive touchscreen systems to detect subtle capacitance changes when a finger or conductor approaches but does not directly contact it. This achieves non-contact hover touch control. The tip discharge electrode is conductively connected to the tails of the meridional and latitudinal protrusions, extending the sensing distance and creating a sensing area in the space between the meridional and latitudinal protrusions. This reduces electric field blind spots and is suitable for large touchscreens, resulting in smooth and comfortable touch actions. It also reduces manufacturing complexity and costs, and helps ensure the screen's display quality. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0029] Figure 1 This is a schematic diagram of the overall structure of the preferred embodiment of this utility model;
[0030] Figure 2 This is a schematic diagram illustrating the structure of the present invention to demonstrate the radial protrusion.
[0031] Reference numerals: 1. Isolation layer; 2. First electrode array; 3. Second electrode array; 4. Plastic substrate; 5. Tip discharge electrode; 6. Meridian electrode unit; 7. Weft electrode unit; 8. Meridian protrusion; 9. Weft protrusion; 10. Meridian depression; 11. Weft depression. Detailed Implementation
[0032] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0034] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0035] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.
[0036] Reference Figure 1 , Figure 2 As shown, the touch point smooth sensing touch screen film of the preferred embodiment of the present invention includes a touch film, the touch film having an isolation layer 1 as a substrate, and two electrode arrays arranged on both sides of the isolation layer 1, namely a first electrode array 2 and a second electrode array 3, and also includes a plastic substrate 4, the plastic substrate 4 being bonded to the surface of the isolation layer 1.
[0037] A tip discharge electrode 5 is embedded in the plastic substrate 4. The tip discharge electrode 5 has a large end and a small end.
[0038] The small end of the tip discharge electrode 5 is located on the plastic substrate 4 away from the isolation layer 1;
[0039] The first electrode array 2 includes a plurality of meridional electrode strips, on which block-shaped aluminum plating layers are disposed at intervals, and the block-shaped aluminum plating layers serve as meridional electrode units 6.
[0040] The second electrode array 3 includes a plurality of latitudinal electrode strips, on which block-shaped aluminum plating layers are disposed at intervals, and the block-shaped aluminum plating layers serve as latitudinal electrode units 7.
[0041] The meridional electrode unit 6 has protrusions on its left and right sides, which serve as meridional protrusions 8;
[0042] The left and right sides of the latitudinal electrode unit 7 are respectively provided with protrusions, which serve as latitudinal protrusions 9;
[0043] Meridian protrusions 8 and weft protrusions 9 are arranged in an alternating pattern;
[0044] At the tail of a meridional protrusion 8, at least two tip discharge electrodes 5 are provided, and the large end of the tip discharge electrode 5 is electrically connected to the meridional protrusion 8.
[0045] At the tail of a latitudinal protrusion 9, at least two tip discharge electrodes 5 are provided, with the large end of the tip discharge electrode 5 being electrically connected to the latitudinal protrusion 9.
[0046] In this embodiment, by setting a tip discharge electrode 5, the tip discharge electrode 5 utilizes the tip effect (charge accumulates in areas with high curvature) to enhance the edge electric field distribution, enabling the capacitive touch screen system to detect weak capacitance changes when a finger or conductor approaches but does not directly contact it, thus achieving a hover touch function. However, on large touch screens, especially those exceeding 100 inches, it is difficult to arrange touch screen electrodes with high precision, resulting in poor touch point smoothness perception. In the traditional approach, the density of the longitudinal protrusions 8 and the latitudinal protrusions 9 can be increased to improve the smoothness perception of the touch. However, this solution has many problems such as complex manufacturing process, high cost, and impact on display effect. In this application, without increasing the density of the longitudinal protrusions 8 and the latitudinal protrusions 9, the sensing distance of the tip discharge electrode 5 is extended, so that the space between the longitudinal protrusions 8 and the latitudinal protrusions 9 forms a sensing area, reducing the electric field blind zone, making the touch action smooth and comfortable, reducing manufacturing complexity and cost, and helping to ensure the display effect of the screen.
[0047] Reference Figure 1 As shown, the tip discharge electrode 5 has a hollow structure.
[0048] In this embodiment, the hollow tip discharge electrode 5 can concentrate the electric field lines more efficiently, forming a stronger edge field strength and improving the sensitivity to touch signals.
[0049] Reference Figure 1 As shown, the large end aperture of the tip discharge electrode 5 is between 0.1 mm and 0.8 mm, and the small end diameter of the tip discharge electrode 5 is less than 0.1 mm.
[0050] Reference Figure 1 As shown, the hollow tip discharge electrode 5 is filled with volatile curing adhesive.
[0051] In this embodiment, the colloid solidifies to form a solid support, preventing the tip discharge electrode 5 from deforming or breaking due to mechanical vibration or external impact (such as large screen transportation or multiple people touching it), thus improving the electrode life.
[0052] Reference Figure 2 As shown, the meridional electrode unit 6 has recesses on its upper and lower sides, which serve as meridional recesses 10;
[0053] The latitudinal electrode unit 7 has recesses on its upper and lower sides, which are called latitudinal recesses 11.
[0054] Reference Figure 2 As shown, the meridional electrode unit 6 and the latitudinal electrode unit 7 overlap at 90° in space, and the meridional protrusion 8 overlaps at the latitudinal recess 11.
[0055] In this embodiment, the overlap of the longitudinal protrusion 8 and the latitudinal recess 11 can minimize the gaps and reduce the blind spots generated during touch, ensuring that information can be collected with each touch. At the same time, the complementary interlocking design of the longitudinal protrusion 8 and the latitudinal recess 11 reduces the overall thickness fluctuation of the electrode layer and adapts to complex surfaces.
[0056] The design of this utility model is particularly suitable for: a screen protector with a thickness greater than 0.5cm attached to the front of the touch film to provide protection.
[0057] Especially suitable for large-screen touch devices.
[0058] It not only improves the feel of touch feedback, but also makes touch actions smooth and comfortable, reduces manufacturing complexity and costs, and helps ensure the display effect of the screen.
[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A touch-point smooth sensing touchscreen film, comprising a touchscreen film having an insulating layer as a substrate, and two electrode arrays disposed on both sides of the insulating layer, namely a first electrode array and a second electrode array, characterized in that, It also includes a plastic substrate, which is bonded to the surface of the isolation layer; A tip discharge electrode is embedded in the plastic substrate, and the tip discharge electrode has a large end and a small end. The small end of the tip discharge electrode is located on the plastic substrate away from the insulating layer; The first electrode array includes a plurality of meridional electrode strips, on which block-shaped aluminum plating layers are disposed at intervals, and the block-shaped aluminum plating layers serve as meridional electrode units; The second electrode array includes a plurality of latitudinal electrode strips, on which block-shaped aluminum plating layers are disposed at intervals, and the block-shaped aluminum plating layers serve as latitudinal electrode units; The meridional electrode unit has protrusions on its left and right sides, which serve as meridional protrusions; The latitudinal electrode unit has protrusions on its left and right sides, which serve as latitudinal protrusions; The longitudinal and latitudinal protrusions are arranged alternately. The tail of one of the meridional protrusions is provided with at least two tip discharge electrodes, the large end of which is electrically connected to the meridional protrusion. The tail of one of the latitudinal protrusions is provided with at least two tip discharge electrodes, the large end of which is electrically connected to the latitudinal protrusion.
2. The touch point smoothing sensing touchscreen film according to claim 1, characterized in that, The tip discharge electrode has a hollow structure.
3. The touch point smoothing sensing touchscreen film according to claim 2, characterized in that, The large end aperture of the tip discharge electrode is between 0.1 mm and 0.8 mm, and the small end diameter of the tip discharge electrode is less than 0.1 mm.
4. The touch point smoothing sensing touchscreen film according to claim 2, characterized in that, The hollow tip discharge electrode is filled with a volatile curing adhesive.
5. The touch point smoothing sensing touchscreen film according to claim 1, characterized in that, The meridional electrode unit has recesses on its upper and lower sides, which serve as meridional recesses. The latitudinal electrode unit has recesses on its upper and lower sides, which serve as latitudinal recesses.
6. The touch point smoothing sensing touchscreen film according to claim 5, characterized in that, The meridional electrode unit and the latitudinal electrode unit overlap at 90° in space, and the meridional protrusion overlaps the latitudinal recess.