High-temperature-resistant touch screen structure and high-temperature operation electronic equipment

Abstract

The utility model discloses a high-temperature-resistant touch screen structure which comprises a touch screen and a circuit board, a binding area is arranged on one side of the touch screen, and the circuit board is connected with the binding area. The touch screen comprises a cover plate, a cover plate pattern layer, an adhesive layer, an ITO (Indium Tin Oxide) pattern layer and a sensor which are sequentially arranged, the cover plate, the cover plate pattern layer, the adhesive layer, the ITO pattern layer and the sensor are made of high-temperature-resistant materials, and a high-temperature-resistant coating is arranged on the circuit board and is uniformly distributed on the surface of the circuit board. According to the touch screen, the cover plate and the sensor which are made of high-temperature-resistant materials are arranged, other parts between the cover plate and the sensor are protected, and the high-temperature-resistant coating is uniformly arranged on the surface of the circuit board, so that the touch screen can stably work in a high-temperature environment; and the phenomenon of insensitive touch or drifting of the touch screen in a high-temperature environment is avoided. The utility model also discloses a high-temperature operation electronic device.

Description

Technical Field

[0001] The utility model relates to the field of touch screens, and particularly to a high-temperature resistant touch screen structure and an electronic device for high-temperature operation. Background Technique

[0002] The working principle of a capacitive touch screen is based on the current induction of the human body. When the user's finger touches the metal layer, due to the effect of the human body's electric field, a coupling capacitance will be formed between the user and the touch screen surface. This coupling capacitance is a direct conductor for high-frequency current, and the finger will absorb a very small current from the contact point. This current flows out from the electrodes at the four corners of the touch screen respectively, and the current flowing through these four electrodes is proportional to the distance from the finger to the four corners. The controller can calculate the position of the touch point through precise calculation of the ratio of these four currents. Capacitive touch screens have the advantages of high sensitivity, multi-touch, strong durability, and good light transmittance, and are widely used in various electronic devices such as smart phones, tablet computers, e-book readers, and game consoles. However, in applications such as metallurgical operations, furnace operations, and high-temperature reactors, the performance of capacitive touch screens is easily affected by temperature, resulting in insensitive touch control or drift phenomenon. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-temperature resistant touch screen structure and an electronic device for high-temperature operation.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A high-temperature resistant touch screen structure includes: a touch screen and a circuit board. A bonding area is provided on one side of the touch screen, and the circuit board is connected to the bonding area. The touch screen includes a cover plate made of a high-temperature resistant material, a cover plate pattern layer, an adhesive layer, an ITO pattern layer, and a sensor made of a high-temperature resistant material, which are arranged in sequence. A high-temperature resistant coating is provided on the circuit board, and the high-temperature resistant coating is evenly distributed on the surface of the circuit board.

[0006] In one embodiment, the high-temperature resistant material is magnesium aluminate spinel.

[0007] In one embodiment, the high-temperature resistant coating is ceramic fiber coating.

[0008] In one embodiment, the adhesive layer is epoxy resin transparent glue.

[0009] In one embodiment, a connection area is provided on the side of the circuit board away from the bonding area.

[0010] In one embodiment, a component area is provided on the circuit board, and connectors, IC chips, capacitors, and resistors are provided in the component area.

[0011] In one embodiment, the circuit board is a flexible circuit board.

[0012] In one embodiment, an optical film is provided on one side of the cover plate away from the cover plate pattern layer.

[0013] In one embodiment, the optical film is an anti-fingerprint film or an anti-glare film.

[0014] A high-temperature operation electronic device includes the above-mentioned high-temperature resistant touch screen structure.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] The high-temperature resistant touch screen structure of the present utility model protects other components between the cover plate and the sensor by providing a cover plate and a sensor made of high-temperature resistant materials, and then by uniformly disposing a high-temperature resistant coating on the surface of the circuit board, so that the touch screen can stably operate in a high-temperature environment, avoiding the problems of insensitive touch or drift of the touch screen in a high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic structural diagram of the high-temperature resistant touch screen structure in the present utility model.

[0019] BRIEF DESCRIPTION OF THE DRAWINGS: 100, touch screen; 200, circuit board; 300, bonding area; 110, cover plate; 120, cover plate pattern layer; 130, adhesive layer; 140, ITO pattern layer; 150, sensor; 210, high-temperature resistant coating; 220, connection area; 230, component area; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0021] Please refer to Figure 1 , a high-temperature resistant touch screen structure 10, comprising: a touch screen 100 and a circuit board 200, a bonding area 300 is provided on one side of the touch screen 100, the circuit board 200 is connected to the bonding area 300, the touch screen 100 includes a cover plate 110, a cover plate pattern layer 120, an adhesive layer 130, an ITO pattern layer 140 and a sensor 150 which are sequentially arranged and made of high-temperature resistant materials, a high-temperature resistant coating 210 is provided on the circuit board 200, and the high-temperature resistant coating 210 is uniformly distributed on the surface of the circuit board 200.

[0022] It should be noted that by setting the cover plate 110 and the sensor 150 made of high-temperature resistant materials to protect other components between the cover plate 110 and the sensor 150, and then evenly setting the high-temperature resistant coating 210 on the surface of the circuit board 200, the touch screen 100 can work stably in a high-temperature environment, avoiding the problems of insensitive touch or drift of the touch screen 100 in a high-temperature environment; the cover plate pattern layer 120 is mainly used to decorate the cover plate 110 to improve the user experience, the ITO pattern layer 140 is mainly used to sense capacitance changes to achieve the touch function, and the sensor 150 is mainly used to carry the ITO pattern layer 140.

[0023] Please refer again to Figure 1 In one embodiment, the high-temperature resistant material is magnesium aluminate spinel. Magnesium aluminate spinel has characteristics such as a high melting point, a small thermal expansion coefficient, good thermal stability, and strong corrosion resistance. It has a small volume change in a high-temperature environment and can withstand rapid temperature changes without cracking or damage. Therefore, the cover plate 110 and the sensor 150 made of magnesium aluminate spinel can effectively enable the touch screen 100 to work stably in a high-temperature environment.

[0024] Please refer again to Figure 1 In one embodiment, the high-temperature resistant coating 210 is a ceramic fiber coating. The ceramic fiber coating has the characteristics of being lightweight, high-temperature resistant, and having good heat insulation performance. By evenly applying the ceramic fiber coating as the high-temperature resistant coating 210 on the surface of the circuit board 200, the high-temperature resistance of the circuit board 200 is improved.

[0025] Please refer again to Figure 1 In one embodiment, the adhesive layer 130 is an epoxy resin transparent adhesive. The epoxy resin transparent adhesive can still maintain extremely high transparency and bonding performance in a high-temperature environment, avoiding the problems of loose bonding and aging and yellowing of components when the touch screen 100 works in a high-temperature environment.

[0026] Please refer again to Figure 1 In one embodiment, a connection area 220 is provided on one side of the circuit board 200 away from the bonding area 300, and the circuit board 200 can be connected to other components through the connection area 220.

[0027] Please refer again to Figure 1 In one embodiment, a component area 230 is provided on the circuit board 200. The component area 230 is provided with connectors, IC chips, capacitors, and resistors. The components in the component area 230 can enable the circuit board 200 to achieve functions of signal and power transmission, data processing, charge storage, and limiting the current in the circuit.

[0028] Please refer again to Figure 1, In one embodiment, the circuit board 200 is a flexible circuit board 200, which has the characteristics of small volume, light weight and thin thickness, and can make the assembly of the touch screen 100 and other components more convenient.

[0029] Please refer to again Figure 1 , In one embodiment, an optical film is provided on the side of the cover plate 110 away from the cover plate pattern layer 120. Setting the optical film on the surface of the cover plate 110 can improve the display effect of the touch screen 100.

[0030] Preferably, the optical film is an anti-fingerprint film or an anti-glare film.

[0031] In one embodiment, a high-temperature operation electronic device includes the above-mentioned high-temperature resistant touch screen structure 10. This high-temperature operation electronic device can be well applied to metallurgical operations, furnace operations and other high-temperature operation electronic devices.

[0032] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A high temperature resistant touch screen structure, characterized in that: include: A touch screen and a circuit board, wherein a binding area is provided on one side of the touch screen, and the circuit board is connected to the binding area. The touch screen comprises a cover plate made of a high-temperature resistant material, a cover plate pattern layer, an adhesive layer, an ITO pattern layer and a sensor made of a high-temperature resistant material which are arranged in sequence. A high-temperature resistant coating is provided on the circuit board, and the high-temperature resistant coating is evenly distributed on the surface of the circuit board.

2. The high temperature resistant touch screen structure according to claim 1, characterized in that: The high temperature resistant material is magnesium aluminum spinel.

3. The high temperature resistant touch screen structure according to claim 1, characterized in that: The high temperature resistant coating is a ceramic fiber coating.

4. The high temperature resistant touch screen structure according to claim 1, characterized in that: The adhesive layer is transparent epoxy resin adhesive.

5. The high temperature resistant touch screen structure according to claim 1, characterized in that: The circuit board is provided with a connection area on a side away from the binding area.

6. The high temperature resistant touch screen structure according to claim 1, characterized in that: The circuit board is provided with a component area, and the component area is provided with a connector, an IC chip, a capacitor and a resistor.

7. The high temperature resistant touch screen structure according to claim 1, characterized in that: The circuit board is a flexible circuit board.

8. The high temperature resistant touch screen structure according to claim 1, characterized in that: The cover plate is provided with an optical film on a side away from the cover plate pattern layer.

9. The high temperature resistant touch screen structure according to claim 8, characterized in that: The optical film is an anti-fingerprint film or an anti-glare film.

10. An electronic device for high temperature operation, characterized in that: The high temperature resistant touch screen structure comprises the structure described in any one of claims 1 to 9.

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