Capacitive touch screen
By introducing a combination of thermally conductive adhesive and metal sheets into capacitive touchscreens, the problem of poor heat dissipation is solved, achieving efficient heat dissipation and screen protection, and improving the performance and lifespan of electronic products.
Patent Information
- Application Number
- CN202423180492.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Capacitive touchscreens have poor heat dissipation, which affects the performance of electronic products.
Thermally conductive adhesive and a metal sheet are incorporated into the capacitive touchscreen. The thermally conductive adhesive layer conducts heat to the metal sheet, which then rapidly conducts the heat into the air. This is combined with an anti-UV film and an anti-reflective film to improve visual comfort and protect the screen.
It improves heat dissipation, prevents high temperatures from affecting the performance of electronic products, reduces UV damage, enhances screen protection, and extends service life.
Smart Images
Figure CN223513523U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitive touch screen technology, specifically a capacitive touch screen. Background Technology
[0002] A capacitive touchscreen is a product that consists of a transparent thin-film conductive layer coated on a glass screen, with a protective glass layer placed over the conductive layer. Its working principle primarily utilizes the electrical current sensing of the human body. When a finger touches the metal layer, the capacitance of the touch point changes, causing a change in the frequency of an oscillator connected to it. By measuring the frequency change, the touch position can be determined and information obtained. The structural design of capacitive touchscreens is ingenious and complex, with each component working together to achieve the touch positioning function. This design not only improves the sensitivity and accuracy of the touchscreen but also enhances its durability and resistance to dirt. Due to its unique advantages, capacitive touchscreens are widely used in smartphones, tablets, industrial control, and other fields, providing users with a more convenient and efficient interactive experience.
[0003] Capacitive touchscreens typically employ a double-glass design with ITO glass and a glass cover, which thoroughly protects the conductor layer and sensors, preventing external environmental factors from affecting the touchscreen. However, glass has poor heat dissipation, which can affect the performance of electronic products and has certain shortcomings. Therefore, we propose a capacitive touchscreen. Utility Model Content
[0004] Therefore, the purpose of this utility model is to provide a capacitive touch screen that, by setting thermally conductive adhesive and metal sheet, greatly improves heat dissipation without affecting the use of the capacitive touch screen, thus avoiding high temperature affecting the performance of electronic products.
[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:
[0006] A capacitive touchscreen, comprising:
[0007] ITO glass;
[0008] A flexible PCB is laid on the ITO glass;
[0009] A cover plate, bonded to the top of the ITO glass;
[0010] A thermally conductive adhesive layer is applied to the top of the cover plate;
[0011] The metal sheet is bonded to the cover plate via a thermally conductive adhesive layer;
[0012] An anti-ultraviolet film is bonded to the top of the cover plate and the metal sheet;
[0013] An anti-reflective film is adhered to the top of the UV-protective film.
[0014] In a preferred embodiment of the capacitive touch screen described in this utility model, the ITO glass includes a substrate disposed at the bottom of the cover plate, a silicon dioxide barrier layer disposed at the top of the substrate, and an ITO film layer disposed at the top of the silicon dioxide barrier layer.
[0015] In a preferred embodiment of the capacitive touchscreen described in this utility model, an optical adhesive layer is further included, which is bonded to the top of the ITO glass.
[0016] In a preferred embodiment of the capacitive touchscreen described in this utility model, the thermally conductive adhesive layer is formed by coating a transparent thermally conductive adhesive.
[0017] In a preferred embodiment of the capacitive touchscreen described in this utility model, the metal sheet is frame-shaped.
[0018] As a preferred embodiment of the capacitive touch screen described in this utility model, it further includes an anti-scratch film, which is adhered to the top of the anti-reflective film.
[0019] Compared with existing technologies, the advantages of this utility model are as follows: By setting thermally conductive adhesive and metal sheet, the heat dissipation effect is greatly improved without affecting the use of capacitive touch screen, avoiding the impact of high temperature on the performance of electronic products. During use, since the thermally conductive adhesive is coated between the cover plate and the metal sheet, a thin thermally conductive adhesive layer is formed. When the touch screen generates heat, the heat can be quickly conducted to the metal sheet through the thermally conductive adhesive layer. Since the metal sheet has good thermal conductivity, it can quickly conduct the heat to the air, thereby accelerating the heat dissipation and greatly improving the heat dissipation effect. Then, the anti-ultraviolet film can block or absorb ultraviolet radiation, reducing the damage of ultraviolet rays to objects or people. The anti-reflective film can reduce or eliminate the reflection phenomenon on the surface of objects, improving visual comfort. Finally, the anti-scratch film can protect the screen from scratches and wear, and has a long service life. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. 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:
[0021] Figure 1 This is an exploded view of the capacitive touchscreen according to the present invention.
[0022] Figure 2 This is a schematic diagram of the appearance of a capacitive touch screen according to the present invention;
[0023] Figure 3 This utility model relates to a capacitive touch screen. Figure 1 A schematic diagram of the structure of ITO glass.
[0024] In the picture:
[0025] 100. ITO glass; 101. Substrate; 102. Silica barrier layer; 103. ITO film layer;
[0026] 200. Flexible PCB;
[0027] 300, Optical adhesive layer;
[0028] 400. Cover plate;
[0029] 500, Thermally conductive adhesive layer;
[0030] 600. Metal sheet;
[0031] 700, UV protection film;
[0032] 800. Anti-reflective film;
[0033] 900. Anti-scratch film. Detailed Implementation
[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0035] 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.
[0036] 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 will be partially enlarged, not at half 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.
[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0038] This invention provides a capacitive touch screen that, by incorporating thermally conductive adhesive and a metal sheet, significantly improves heat dissipation without affecting the use of the capacitive touch screen, thus preventing high temperatures from impacting the performance of electronic products.
[0039] Figure 1-3 The diagram shown is an overall structural schematic of one embodiment of the capacitive touchscreen of this utility model. Please refer to [link / reference]. Figure 1-3 The main body of a capacitive touch screen according to this embodiment includes: ITO glass 100, flexible PCB 200, optical adhesive layer 300, cover plate 400, thermally conductive adhesive layer 500, metal sheet 600, anti-ultraviolet film 700, anti-reflective film 800 and anti-scratch film 900.
[0040] Specifically, the ITO glass 100 includes a substrate 101 disposed at the bottom of the cover plate 400, a silica barrier layer 102 disposed at the top of the substrate 101, and an ITO film layer 103 disposed at the top of the silica barrier layer 102. In use, the substrate 101 is the base of the ITO glass 100, and is usually made of sodium-calcium-based or borosilicate-based glass. The substrate glass provides stable support for the ITO film layer 103 and determines the basic physical and chemical properties of the ITO glass 100. The silica barrier layer 102 can prevent sodium ions on the substrate 101 from diffusing into the liquid crystal inside the cell. The ITO film layer 103 is the core of the ITO glass 100, giving the glass the properties of conductivity and transparency.
[0041] Specifically, the flexible PCB200 is laid on the ITO glass 100. When in use, the flexible PCB200 is an electronic circuit board with high flexibility, which can be used in bending or folding situations.
[0042] Specifically, the optical adhesive layer 300 is bonded to the top of the ITO glass 100. In use, the optical adhesive layer 300 is a special adhesive used to bond transparent optical elements. It has the characteristics of being colorless and transparent, having high light transmittance, good bonding strength, and low curing shrinkage.
[0043] Specifically, the cover plate 400 is bonded to the top of the ITO glass 100. During use, the cover plate 400 is used to protect the ITO glass 100 from scratches, abrasions and other damage.
[0044] Specifically, the thermally conductive adhesive layer 500 is coated on the top of the cover plate 400. The thermally conductive adhesive layer 500 is made of transparent thermally conductive adhesive. When in use, the thermally conductive adhesive layer 500 is a special adhesive that not only has the bonding properties of traditional glue, but also has good thermal conductivity. Through the thermally conductive adhesive layer 500, heat can be quickly conducted to the metal sheet 600 for heat dissipation.
[0045] Specifically, the metal sheet 600 is bonded to the cover plate 400 via a thermally conductive adhesive layer 500. The metal sheet 600 is frame-shaped. During use, a thin thermally conductive adhesive layer 500 is formed between the cover plate 400 and the metal sheet 600 because the thermally conductive adhesive is applied between them. When the touch screen generates heat, the heat can be quickly conducted to the metal sheet 600 through the thermally conductive adhesive layer 500. Since the metal sheet 600 has good thermal conductivity, it can quickly conduct the heat to the air, thereby accelerating the heat dissipation and greatly improving the heat dissipation effect.
[0046] Specifically, the UV protection film 700 is bonded to the top of the cover plate 400 and the metal sheet 600. During use, the UV protection film 700 can block or absorb ultraviolet radiation, reducing the damage of ultraviolet rays to objects or the human body.
[0047] Specifically, the anti-reflective film 800 is bonded to the top of the UV protection film 700. When in use, the anti-reflective film 800 can reduce or eliminate the reflection on the surface of objects and improve visual comfort.
[0048] Specifically, the scratch-resistant film 900 is bonded to the top of the anti-reflective film 800. During use, the scratch-resistant film 900 can protect the screen from scratches and wear, and has a long service life.
[0049] Combination Figures 1-3 In this embodiment of a capacitive touchscreen, a thin thermally conductive adhesive layer 500 is formed between the cover plate 400 and the metal sheet 600. When the touchscreen generates heat, the heat can be quickly conducted to the metal sheet 600 through the thermally conductive adhesive layer 500. Since the metal sheet 600 has good thermal conductivity, it can quickly conduct the heat to the air, thereby accelerating heat dissipation and greatly improving the heat dissipation effect. Then, the anti-ultraviolet film 700 can block or absorb ultraviolet radiation, reducing the damage of ultraviolet rays to objects or people. The anti-reflective film 800 can reduce or eliminate the reflection phenomenon on the surface of objects, improving visual comfort. Finally, the anti-scratch film 900 can protect the screen from scratches and wear, resulting in a long service life.
[0050] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A capacitive touchscreen, characterized in that, include: ITO glass (100); A flexible PCB (200) is laid on the ITO glass (100); A cover plate (400) is bonded to the top of the ITO glass (100); A thermally conductive adhesive layer (500) is applied to the top of the cover plate (400); The metal sheet (600) is bonded to the cover plate (400) through the thermally conductive adhesive layer (500); An anti-ultraviolet film (700) is bonded to the top of the cover plate (400) and the metal sheet (600); An anti-reflective film (800) is bonded to the top of the UV-protective film (700).
2. A capacitive touchscreen according to claim 1, characterized in that, The ITO glass (100) includes a substrate (101) disposed at the bottom of the cover plate (400), a silica barrier layer (102) disposed at the top of the substrate (101), and an ITO film layer (103) disposed at the top of the silica barrier layer (102).
3. A capacitive touchscreen according to claim 2, characterized in that, It also includes an optical adhesive layer (300) that is bonded to the top of the ITO glass (100).
4. A capacitive touchscreen according to claim 3, characterized in that, The thermally conductive adhesive layer (500) is made of transparent thermally conductive adhesive.
5. A capacitive touchscreen according to claim 4, characterized in that, The metal sheet (600) is frame-shaped.
6. A capacitive touchscreen according to claim 5, characterized in that, It also includes a scratch-resistant film (900) which is bonded to the top of the anti-reflective film (800).