Touch screen module structure and touch screen thereof

Abstract

This invention discloses a touch screen module structure, comprising a metal film, a dielectric layer, and a substrate stacked sequentially. The substrate has a thickness of 280-320 Å, and the dielectric layer has a thickness of 2000-2200 Å. The touch screen structure design of this invention modifies the original metal film thickness and increases the thickness between the dielectric layers to achieve a lower capacitance, allowing the sensor rotation speed to meet the latest market demands while still ensuring normal electrical signal transmission. This improves the touch screen's sensitivity and thus increases the yield rate in the touch screen manufacturing process.

Description

Technical Field

[0001] This utility model relates to the field of touch screens. Background Technology

[0002] As the international market raises its requirements for the quality of automotive products, customers are not only demanding higher standards for the appearance of touchscreens, but also becoming more stringent about the factors that have a subtle impact on touchscreen control. Nowadays, with the increase in sensor compatibility and performance, the market is beginning to phase out sensors that are slower and less sensitive.

[0003] Currently, touchscreens are increasingly common in automobiles, and automotive industrial control projects are placing increasingly higher demands on product quality. Customers not only have higher requirements for the appearance of touchscreens but also stricter requirements for factors that subtly affect touch sensitivity. Sensor sensitivity compatibility is one important aspect. A typical touchscreen structure is as follows. For example, the patent document with publication number CN106325601B, publication date November 28, 2023, entitled "Touchscreen, Display Device, and Method for Preparing Touchscreen," discloses a touchscreen comprising a first electrode layer and a second electrode layer for touch sensing, and an insulating layer located between the first electrode layer and the second electrode layer; it also includes: a first ground wire disposed on the side of the insulating layer facing the first electrode layer, and a second ground wire disposed on the side of the insulating layer facing the second electrode layer; wherein the first ground wire is electrically connected to a grounding terminal; or, the second ground wire is electrically connected to a grounding terminal; the insulating layer has a ground wire via, and the first ground wire and the second ground wire are electrically connected through the ground wire via.

[0004] Because it can affect the touch sensitivity of a single point, more and more customers are incorporating it into functional testing. However, due to process limitations, the rotational speed test and settling time of a single bridge point cannot meet the standards, and the existing design cannot meet customer requirements, which lowers the product yield and increases manufacturing costs. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to realize a highly sensitive touch screen structure design.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a touch screen module structure, comprising a metal film, a dielectric layer and a substrate stacked sequentially, wherein the thickness of the substrate is 280-320 Å and the thickness of the dielectric layer is 2000-2200 Å.

[0007] The thickness of the metal film is 480-520 Å.

[0008] The thickness of the metal film is 500 Å.

[0009] The thickness of the substrate is 300 Å.

[0010] The dielectric layer has a thickness of 2100 Å.

[0011] The thickened dielectric layer and substrate are used to obtain lower capacitance.

[0012] A touch screen, the touch screen including the module structure.

[0013] The touchscreen structure design of this utility model modifies the original metal film thickness and increases the thickness between dielectric layers to obtain a lower capacitance, allowing the sensor rotation speed to meet the latest market demands while still ensuring normal transmission of electrical signals, thereby improving the touchscreen sensitivity and increasing the yield rate of the touchscreen manufacturing process. Attached Figure Description

[0014] The following is a brief explanation of the content represented by each of the accompanying drawings in this utility model specification:

[0015] Figure 1 This is a schematic diagram of the touch screen module structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a current touchscreen module.

[0017] Figure 3 This is a comparison diagram of the sensor speed of two different designs. Detailed Implementation

[0018] The following description, with reference to the accompanying drawings, details the specific implementation of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the function and working principle of each part, the manufacturing process, and the operation and use methods. This will help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of this utility model.

[0019] This invention is an improvement design to address the shortcomings of existing touch screen sensing speed. By adjusting the thickness of the metal film layer to an appropriate range, the compatibility level between the firmware and sensor hardware during the production process is achieved to meet market demands, and the single-point capacitance value will not exceed the set range, thus preventing program test failure.

[0020] To achieve the above objectives, the technical solution adopted by this utility model is to adjust the thickness of the metal film layer to an appropriate range so as to achieve the compatibility level between the firmware and sensor hardware during the production process and meet market demands.

[0021] Touch screen module structure as follows Figure 2 As shown, a metal film, a dielectric layer, and a substrate are stacked sequentially. The existing metal film thickness is 420 Å, the dielectric layer thickness is 190 Å, and the substrate thickness is 300 Å. Figure 1As shown, without changing the layer structure, this innovation modifies the thickness ratio of the metal film, dielectric layer, and substrate. The substrate thickness remains unchanged at 300 Å, while both the metal film and dielectric layer are thickened. The metal film thickness is 480-520 Å, and the dielectric layer thickness is 2000-2200 Å, with a preferred thickness of 500 Å for the metal film and 2100 Å for the dielectric layer. By thickening the metal film and dielectric layer, a lower capacitance is achieved, allowing the sensor's rotation speed to meet the latest market demands while still ensuring normal signal transmission and improving touchscreen sensitivity. The aforementioned metal film, dielectric layer, and substrate layer structure and their corresponding thicknesses can be applied to touchscreens.

[0022] All sensor test speeds and corresponding program data are based on a single customized test limit, with the integration time still limited by the sensor's sedimentation curve between sample-permitted tests. For example... Figure 3 As shown, it is very clear that, in the same triggering process, the sensing response speed of this invention is superior to that of existing products.

[0023] The purpose of this invention is to increase the thickness between dielectric layers to obtain a lower capacitance, thereby enabling the sensor's rotation speed to meet the latest market demands.

[0024] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A touch screen module structure, comprising a metal film, a dielectric layer, and a substrate stacked sequentially, wherein the substrate has a thickness of 280-320 Å, characterized in that: The dielectric layer has a thickness of 2000-2200 Å. 2.The touch screen module structure of claim 1, wherein: The thickness of the metal film is 480-520 Å. 3.The touch screen module structure of claim 2, wherein: The thickness of the metal film is 500 Å. 4.The touch screen module structure of claim 1, 2 or 3, wherein: The thickness of the substrate is 300 Å. 5.The touch screen module structure of claim 4, wherein: The dielectric layer has a thickness of 2100 Å. 6.The touch screen module structure of claim 5, wherein: The thickened dielectric layer and substrate are used to obtain lower capacitance.

7. A touch screen, characterized by The touch screen includes the module structure as described in any one of claims 1-6.

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