Remote touch screen film based on a sharp discharge mechanism

Abstract

This application relates to the field of electrical engineering, specifically to touchscreens. A long-distance touchscreen film based on a tip discharge mechanism includes a touch film having a dielectric layer as a substrate and electrode arrays arranged on both sides of the dielectric layer, namely a first electrode array and a second electrode array, and a plastic substrate. At least two sets of tip discharge arrays, namely a first tip discharge array and a second tip discharge array, are embedded in the plastic substrate. Each tip discharge array includes at least two tip discharge electrodes, each having a large end and a small end. The small end of the tip discharge electrode is located in the direction away from the dielectric layer on the plastic substrate. The capacitive touchscreen optimizes touch sensitivity by using a plastic substrate and tip discharge arrays, enabling the capacitive touchscreen system to detect weak capacitance changes when a finger or conductor approaches but does not directly contact the screen, supporting hover touch when the finger is not in contact with the screen.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering, specifically to a touch screen. Background Technology

[0002] A touchscreen is a human-computer interaction device that allows users to input commands by directly touching the display surface. It is widely used in smartphones, tablets, ATMs, industrial control panels, vehicle systems, and other fields. Its core function is to convert the user's physical touch (finger or stylus) into electronic signals to achieve precise interactive control.

[0003] However, the fact that touchscreens require direct contact with the screen accelerates screen wear and aging, and the palm touching the edge of the touchscreen can trigger accidental operations, affecting the user experience.

[0004] Therefore, optimizing the touch sensitivity of the touch screen by modifying it has become a technical problem that urgently needs 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 long-distance touchscreen film based on a tip discharge mechanism includes a touch film having a dielectric layer as a substrate and electrode arrays arranged on both sides of the dielectric layer, namely a first electrode array and a second electrode array.

[0008] It also includes a plastic substrate;

[0009] At least two sets of tip discharge arrays are embedded in the plastic substrate, namely a first tip discharge array and a second tip discharge array;

[0010] The tip discharge array includes at least two tip discharge electrodes, each having a large end and a small end.

[0011] The small end of the tip discharge electrode is located on the plastic substrate away from the dielectric layer;

[0012] The large end of the tip discharge electrode in the first tip discharge array is connected to the electrode in the first electrode array;

[0013] The large end of the tip discharge electrode in the second tip discharge array is connected to the electrode in the second electrode array.

[0014] The plastic substrate is bonded to the surface of the dielectric layer.

[0015] In the above design, by attaching a plastic substrate to the surface of the dielectric layer and embedding at least two sets of tip discharge arrays in the plastic substrate, and connecting the two sets of tip discharge arrays to the electrode arrays on both sides of the dielectric layer, the beneficial effect of this design is that the tip discharge electrodes utilize the tip effect (charge accumulates in the area with large curvature) to enhance the edge electric field distribution, enabling the touch screen to detect the weak capacitance changes when a finger or conductor approaches but does not directly contact it, avoiding touch blind spots, expanding the range of electric field action, and reducing accidental touches by directional discharge to guide stray currents.

[0016] Further optimization involves the use of a hollow structure for the tip discharge electrode.

[0017] In the above design, the hollow tip discharge electrode has both an inner edge and an outer edge, forming a dual charge accumulation band, creating a stronger local electric field, improving the sensitivity of levitation touch detection, and reducing the use of highly conductive aluminum materials, thus lowering costs.

[0018] 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 0.15 mm.

[0019] Furthermore, the first electrode array includes a plurality of meridional electrode strips, on which block-shaped aluminum plating layers are spaced apart, and the block-shaped aluminum plating layers serve as meridional electrode units.

[0020] 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;

[0021] The large end of the tip discharge electrode in the first tip discharge array is connected to the meridional electrode unit;

[0022] The large end of the tip discharge electrode in the second tip discharge array is connected to the latitudinal electrode unit to enhance the local electric field and increase the electric field penetration depth of the levitation operation.

[0023] In a further optimization, each of the meridional electrode units is provided with a meridional axis, and meridional protrusions are provided on the left and right sides of the meridional axis, and meridional recesses are provided on the upper and lower sides of the meridional protrusions. The latitudinal electrode unit is provided with a latitudinal axis, and latitudinal protrusions are provided on the left and right sides of the latitudinal axis, and latitudinal recesses are provided on the upper and lower sides of the latitudinal protrusions. The meridional electrode unit and the latitudinal electrode unit overlap at 90° in space, and the meridional protrusions overlap at the latitudinal recesses.

[0024] In the above design, the overlap of the longitudinal protrusion and the latitudinal concavity can minimize the gaps, reduce the blind spots generated during touch, and ensure that information can be collected with every touch.

[0025] This invention utilizes the tip effect (charges accumulate in areas of high curvature) to enhance the distribution of the electric field at the edge, enabling the capacitive touchscreen system to detect subtle capacitance changes when a finger or conductor approaches but does not directly contact it. This avoids touch blind spots, expands the range of electric field action, reduces accidental touches, allows users to operate the device without directly touching it, and improves the device's lifespan. Attached Figure Description

[0026] 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:

[0027] Figure 1 This is a schematic diagram of the overall structure of the preferred embodiment of this utility model.

[0028] Figure 2 This is a schematic diagram of the structure of this utility model used to illustrate the latitudinal concavity.

[0029] Reference numerals: 1. Dielectric layer; 2. First electrode array; 3. Second electrode array; 4. Plastic substrate; 5. First tip discharge array; 6. Second tip discharge array; 7. Meridional protrusion; 8. Meridional depression; 9. Weft protrusion; 10. Weft depression; Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Reference Figure 1 , Figure 2 As shown, a long-distance touch screen film based on a tip discharge mechanism includes a touch film, the touch film having a dielectric layer 1 as a substrate, and electrode arrays arranged on both sides of the dielectric layer 1, namely a first electrode array 2 and a second electrode array 3.

[0035] It also includes a plastic substrate 4;

[0036] At least two sets of tip discharge arrays are embedded in the plastic substrate 4, namely the first tip discharge array 5 and the second tip discharge array 6.

[0037] A tip discharge array comprising at least two tip discharge electrodes, each tip discharge electrode having a large end and a small end;

[0038] The small end of the tip discharge electrode is located on the plastic substrate 4 away from the dielectric layer 1;

[0039] The large end of the tip discharge electrode in the first tip discharge array 5 is connected to the electrode in the first electrode array 2.

[0040] The large end of the tip discharge electrode in the second tip discharge array 6 is connected to the electrode in the second electrode array 3.

[0041] The plastic substrate 4 is bonded to the surface of the dielectric layer 1.

[0042] In this embodiment, by attaching a plastic substrate 4 to the surface of the dielectric layer 1 and embedding at least two sets of tip discharge arrays in the plastic substrate 4, and connecting the two sets of tip discharge arrays to the electrode arrays on both sides of the dielectric layer 1 respectively, the beneficial effect of this design is that the tip discharge electrodes utilize the tip effect (charge accumulates in the area with large curvature) to enhance the edge electric field distribution, enabling the touch screen to detect the weak capacitance change when a finger or conductor approaches but does not directly contact it, avoiding touch blind spots, expanding the range of electric field action, and reducing accidental touches by directional discharge to guide stray currents.

[0043] Reference Figure 1 As shown, the tip discharge electrode has a hollow structure.

[0044] In this embodiment, the hollow tip discharge electrode has both an inner edge and an outer edge, forming a dual charge accumulation band, creating a stronger local electric field, improving the sensitivity of the levitation touch detection, and reducing the use of highly conductive aluminum material, thus lowering costs.

[0045] Reference Figure 1 As shown, the large end aperture (specifically, the diameter) 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 0.15 mm.

[0046] Reference Figure 1 , Figure 2 As shown, the first electrode array 2 includes a plurality of meridional electrode strips, and on the meridional electrode strips, there are block-shaped aluminum coatings spaced apart, and the block-shaped aluminum coatings serve as meridional electrode units.

[0047] 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.

[0048] The large end of the tip discharge electrode in the first tip discharge array 5 is connected to the meridional electrode unit.

[0049] The large end of the tip discharge electrode in the second tip discharge array 6 is connected to the latitudinal electrode unit to enhance the local electric field and increase the electric field penetration depth of the levitation operation.

[0050] Reference Figure 1 , Figure 2 As shown, each meridional electrode unit is provided with a meridional axis, and meridional protrusions 7 are provided on the left and right sides of the meridional axis. Meridional depressions 8 are provided on the upper and lower sides of the meridional protrusions 7. The latitudinal electrode unit is provided with a latitudinal axis, and latitudinal protrusions 9 are provided on the left and right sides of the latitudinal axis. Latitudinal depressions 10 are provided on the upper and lower sides of the latitudinal protrusions 9. The meridional electrode unit and the latitudinal electrode unit overlap at 90° in space, and the meridional protrusions 7 overlap at the latitudinal depressions 10.

[0051] In this embodiment, the overlap of the longitudinal protrusion 7 and the latitudinal recess 10 can minimize the gap, reduce the blind spot generated during touch, and ensure that information can be collected with each touch.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the best mode of the present invention, or those features that are not relevant to the implementation of the present invention.

[0053] It should be understood that during the development of any practical implementation, such as in any engineering or design project, numerous decisions can be made regarding the specific implementation. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0054] The design of this invention is particularly suitable for: a tempered glass with a thickness greater than 0.5cm is attached to the front of the touch film.

[0055] It is especially suitable for public touch devices such as ATMs and display cases.

[0056] This allows fingers to be positioned further away from the touchscreen to produce a tactile effect. This not only improves the tactile feedback experience but also makes it particularly suitable for use with thicker glass protective layers, providing better safety protection in public places.

[0057] 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 long-range touchscreen film based on a tip discharge mechanism, comprising a touchscreen film having a dielectric layer as a substrate, and electrode arrays disposed on both sides of the dielectric layer, namely a first electrode array and a second electrode array, characterized in that, It also includes a plastic substrate; At least two sets of tip discharge arrays are embedded in the plastic substrate, namely a first tip discharge array and a second tip discharge array; The tip discharge array includes at least two tip discharge electrodes, each having a large end and a small end. The small end of the tip discharge electrode is located on the plastic substrate away from the dielectric layer; The large end of the tip discharge electrode in the first tip discharge array is connected to the electrode in the first electrode array; The large end of the tip discharge electrode in the second tip discharge array is connected to the electrode in the second electrode array; The plastic substrate is bonded to the surface of the dielectric layer.

2. The long-distance touchscreen film based on a tip discharge mechanism according to claim 1, characterized in that, The tip discharge electrode has a hollow structure.

3. The long-distance touchscreen film based on a tip discharge mechanism 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 0.15 mm.

4. The long-distance touchscreen film based on a tip discharge mechanism according to claim 1, characterized in that, 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 large end of the tip discharge electrode in the first tip discharge array is connected to the meridional electrode unit; The large end of the tip discharge electrode in the second tip discharge array is connected to the latitudinal electrode unit.

5. The long-distance touchscreen film based on a tip discharge mechanism according to claim 4, characterized in that, Each of the meridional electrode units is provided with a meridional axis, and meridional protrusions are provided on the left and right sides of the meridional axis, and meridional recesses are provided on the upper and lower sides of the meridional protrusions. Each latitudinal electrode unit is provided with a latitudinal axis, and latitudinal protrusions are provided on the left and right sides of the latitudinal axis, and latitudinal recesses are provided on the upper and lower sides of the latitudinal protrusions. The meridional electrode units and latitudinal electrode units overlap at 90° in space, and the meridional protrusions overlap at the latitudinal recesses.

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