WO2023134238A1

WO2023134238A1 - Touch screen having long service life

Info

Publication number: WO2023134238A1
Application number: PCT/CN2022/124740
Authority: WO
Inventors: 陈磊; 马铮铮
Original assignee: 湖南德福隆科技有限责任公司
Priority date: 2022-01-14
Filing date: 2022-10-12
Publication date: 2023-07-20
Also published as: CN114546159A

Abstract

Provided in the present invention is a touch screen having a long service life, the touch screen comprising substrates and an ITO conducting layer, wherein the substrates comprise a heat insulation substrate and two heat-conducting substrates; the ITO conducting layer is arranged between the two heat-conducting substrates; the heat insulation substrate is arranged on an outer surface of one of the heat-conducting substrates; and a protection layer is provided on an outer surface of the other heat-conducting substrate. The present solution effectively reduces the effect of temperature, oxygen, moisture and external infrared rays on a touch screen, such that an ITO conducting layer can always work normally in an environment where the temperature is below 30 ºC; and the effect of a high temperature on the usage sensitivity and the reaction speed of the ITO conducting layer is reduced, thereby prolonging the service life of the touch screen.

Description

A long-lasting touch screen

technical field

The invention relates to touch screen technology, in particular to a touch screen with long service life.

Background technique

With the development and progress of science and technology, the requirements for intelligence in various fields are getting higher and higher. Therefore, in the process of smart device control, a touch screen is needed to realize the operation and control of the panel. At the same time, the demand for electronic devices such as tablet computers and notebooks It is also increasing, but the current touch screen is expensive, and at the same time, it is easy to break after being dropped during use, affecting use and high replacement costs.

The application number is 201720285908.0, which discloses a touch screen capable of suppressing watermarks, which includes a glass cover layer, an adhesive layer, an ITO layer, an insulating isolation layer, and an LCD backlight layer. However, the touch screen is severely heated during use, and the heat dissipation is irrational, which affects its service life; the application number is 201920588393.0, which discloses a bendable and foldable capacitive touch screen, including a substrate, a hard coating, a conductive pattern layer, a conductive layer, and a display layer. and a protective layer, the top surface of the hard coating is bonded to the bottom surface of the substrate, the bottom surface of the conductive pattern layer is bonded to the top surface of the substrate, the bottom surface of the conductive layer is bonded to the top surface of the conductive pattern layer, The bottom surface of the display layer is bonded to the top surface of the conductive layer. However, the heat dissipation effect of the touch screen is not ideal, and the temperature of the touch screen is too high after long-term use to affect its use effect and response sensitivity; the application number is 201310424920.1 discloses a touch screen without color difference, but the touch screen is easy to absorb infrared rays during use, resulting in surface temperature of the screen Too high will affect the use effect; at present, the heat dissipation effect of the touch screen is poor, and at the same time, it is easily affected by the temperature and humidity of the external environment, which affects the response speed and service life of the touch screen, which is an urgent problem to be solved at present.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide a kind of device that is convenient to prevent falling and reduce fragmentation, has an outstanding heat dissipation effect, reduces the influence of temperature, humidity, oxygen, etc. on the touch screen, improves the service life of the touch screen, and has high sensitivity. touch screen.

The technical solution of the present invention is: a touch screen with long service life, including a substrate and an ITO conductive layer, the substrate includes a heat-insulating substrate and two layers of heat-conducting substrates, the ITO conductive layer is arranged between the two layers of heat-conducting substrates, and the heat-insulating substrate It is arranged on the outer surface of one layer of heat conduction substrate, and the outer surface of the other layer of heat conduction substrate is provided with a protective layer.

The advantage of this solution is that the heat conduction substrate is installed on both sides of the ITO conductive layer, which can effectively improve the heat dissipation of the ITO conductive layer, and avoid the accumulation of heat during the use of the ITO conductive layer, which will cause the temperature of the touch screen to rise and affect its use effect. At the same time, the heat insulating substrate can isolate the influence of the heat generated inside the equipment on the ITO conductive layer. The combination of the heat insulating substrate and the heat conducting substrate can keep the temperature of the ITO conductive layer always controlled below 30 °C, thereby ensuring the use effect of the ITO conductive layer and Sensitivity, while ensuring the service life of the touch screen.

Further, the protective layer includes an electroplating or silk screen printing dark green layer, and the outer surface of the electroplating or silk printing dark green layer is provided with a water and oxygen barrier layer. Preferably, the electroplating layer or the dark green layer can play a role and effect of filtering, reduce the damage of other strong light such as blue light to the eyes, and set the water and oxygen barrier layer at the same time to reduce the impact of water and oxygen on the ITO conductive layer and electroplating, dark green. Oxidation of the ITO layer improves the service life of the touch screen. In addition, the water-oxygen barrier layer combined with the thermally conductive substrate can further block the oxidation of the ITO conductive layer by water, oxygen, and high temperature, thereby improving the service life of the ITO conductive layer and ensuring the ITO conductive layer. The sensitivity and reaction speed used ensure the fluency of operation.

Further, the thickness of the electroplating or silk screen dark green layer is 30-100 μm; the thickness of the water and oxygen barrier layer is 50-300 μm. Preferably, the electroplating or silk screen printing dark green layer has a thickness of 50-80 μm; the water and oxygen barrier layer has a thickness of 80-260 μm. More preferably, the thickness of the electroplated or silk-screened dark green layer is 55/60/65/60 μm; the thickness of the water and oxygen barrier layer is 100/120/140/180/200/260 μm.

Furthermore, a blue light filter layer and/or an infrared absorption layer is also provided between the water and oxygen barrier layer and the electroplating or silk screen printing dark green layer. Preferably, the setting of the blue light filter layer and/or the infrared absorption layer can reduce the damage of blue light to eyesight, and the infrared absorption layer can reduce the damage of the external environment, especially the infrared rays in sunlight, to the touch screen, so that the touch screen can be placed in the sun to make it quickly The temperature rise affects the service life and quick response of the touch screen, and can reduce the impact of infrared rays on the service life of the ITO conductive layer in the touch screen and the electroplating or silk screen dark green layer.

Further, the thickness of the blue light filtering layer or the infrared absorbing layer is 40-80 μm. Preferably, the thickness of the blue light filtering layer or the infrared absorbing layer is 45-70 μm; more preferably, the thickness of the blue light filtering layer or the infrared absorbing layer is 50/55/60/62/65/68 μm.

Further, an anti-scratch layer is provided on the outer surface of the water-oxygen barrier layer. It is convenient to improve the protection of the touch screen, and at the same time, it increases the risk of the touch screen being broken. The smooth surface of the anti-scratch layer can avoid surface scratches, and has hydrophobic and lipophobic effects, which is convenient to improve the protection of the touch screen.

Further, the thickness of the anti-scratch layer is 20-50 μm. Preferably, the thickness of the anti-scratch layer is 30-45 μm; more preferably, the thickness of the anti-scratch layer is 35/38/40/42 μm.

Further, the thickness of the heat insulating substrate and the heat conducting substrate are both 100-500 μm. Preferably, the thickness of both the thermal insulation substrate and the thermal conduction substrate is 120-480 μm. More preferably, the thicknesses of the heat insulating substrate and the heat conducting substrate are both 150/200/220/240/250/300/350/400 μm.

Further, the thickness of the ITO conductive layer is 20-80 μm. Preferably, the thickness of the ITO conductive layer is 25-75 μm; more preferably, the thickness of the ITO conductive layer is 30/35/38/41/45/48/55/60 μm.

Further, the total thickness of the touch screen is 1.5-2.1 mm. Preferably, the total thickness of the touch screen is 1.8-2.0 mm; more preferably, the total thickness of the touch screen is 1.6/1.7/1.9/2.0 mm.

The present invention has the following characteristics: it effectively solves the influence of temperature, oxygen, moisture and external infrared rays on the touch screen, so that the ITO conductive layer can always work normally under the temperature environment below 30°C, and reduces the use of high temperature on the ITO conductive layer. The impact of sensitivity and response speed improves the service life of the touch screen.

The detailed structure of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Figure 1 - is a schematic structural diagram of a touch screen according to Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a touch screen according to Embodiment 2 of the present invention;

Figure 3 - is a schematic structural diagram of a touch screen according to Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a touch screen according to Embodiment 4 of the present invention.

Detailed ways

As shown in Figures 1-4: a touch screen with long service life, including a substrate and an ITO conductive layer. The substrate includes a heat insulating substrate and two layers of heat conducting substrates. It is arranged on the outer surface of one layer of heat conduction substrate, and the outer surface of the other layer of heat conduction substrate is provided with a protective layer.

In this solution, the thermal conductive substrate is installed on both sides of the ITO conductive layer, which can effectively improve the heat dissipation of the ITO conductive layer, and avoid the heat accumulation of the ITO conductive layer during use, which will cause the temperature of the touch screen to rise, which will affect its use effect, and at the same time, heat insulation The substrate can isolate the influence of the heat generated inside the device on the ITO conductive layer. The combination of the heat insulating substrate and the thermally conductive substrate can keep the temperature of the ITO conductive layer below 30°C, thereby ensuring the use effect and sensitivity of the ITO conductive layer, while ensuring the service life of the touch screen.

The protective layer includes an electroplating or silk-screening dark green layer, and the outer surface of the electroplating or silk-screening dark green layer is provided with a water-oxygen barrier layer. Preferably, the electroplating layer or the dark green layer can play a role and effect of filtering, reduce the damage of other strong light such as blue light to the eyes, and set the water and oxygen barrier layer at the same time to reduce the impact of water and oxygen on the ITO conductive layer and electroplating, dark green. Oxidation of the ITO layer improves the service life of the touch screen. In addition, the water-oxygen barrier layer combined with the thermally conductive substrate can further block the oxidation of the ITO conductive layer by water, oxygen, and high temperature, thereby improving the service life of the ITO conductive layer and ensuring the ITO conductive layer. The sensitivity and reaction speed used ensure the fluency of operation.

The thickness of the electroplating or silk-screen dark green layer is 30-100 μm; the thickness of the water-oxygen barrier layer is 50-300 μm. Preferably, the thickness of the electroplated or silk-screened dark green layer is 50-80 μm; the thickness of the water-oxygen barrier layer is 80-260 μm. More preferably, the thickness of the electroplated or silk-screened dark green layer is 55/60/65/60 μm; the thickness of the water and oxygen barrier layer is 100/120/140/180/200/260 μm.

A blue-light filter layer and/or an infrared-absorbing layer is also provided between the water-oxygen barrier layer and the electroplating or silk-screen dark green layer. Preferably, the setting of the blue light filter layer and/or the infrared absorption layer can reduce the damage of blue light to eyesight, and the infrared absorption layer can reduce the damage of the external environment, especially the infrared rays in sunlight, to the touch screen, so that the touch screen can be placed in the sun to make it quickly The temperature rise affects the service life and quick response of the touch screen, and can reduce the impact of infrared rays on the service life of the ITO conductive layer in the touch screen and the electroplating or silk screen dark green layer.

The thickness of the blue light filtering layer or the infrared absorbing layer is 40-80 μm. Preferably, the thickness of the blue light filtering layer or the infrared absorbing layer is 45-70 μm; more preferably, the thickness of the blue light filtering layer or the infrared absorbing layer is 50/55/60/62/65/68 μm.

An anti-scratch layer is provided on the outer surface of the water-oxygen barrier layer. It is convenient to improve the protection of the touch screen, and at the same time, it increases the risk of the touch screen being broken. The smooth surface of the anti-scratch layer can avoid surface scratches, and has hydrophobic and lipophobic effects, which is convenient to improve the protection of the touch screen.

The thickness of the anti-scratch layer is 20-50 μm. Preferably, the thickness of the anti-scratch layer is 30-45 μm; more preferably, the thickness of the anti-scratch layer is 35/38/40/42 μm.

Both the thickness of the heat insulating substrate and the heat conducting substrate are 100-500 μm. Preferably, the thickness of both the thermal insulation substrate and the thermal conduction substrate is 120-480 μm. More preferably, the thicknesses of the heat insulating substrate and the heat conducting substrate are both 150/200/220/240/250/300/350/400 μm.

The thickness of the ITO conductive layer is 20-80 μm. Preferably, the thickness of the ITO conductive layer is 25-75 μm; more preferably, the thickness of the ITO conductive layer is 30/35/38/41/45/48/55/60 μm.

The total thickness of the touch screen is 1.5-2.1mm. Preferably, the total thickness of the touch screen is 1.8-2.0 mm; more preferably, the total thickness of the touch screen is 1.6/1.7/1.9/2.0 mm.

Embodiment one

A touch screen with a long service life. The total thickness of the touch screen is 2.1mm; it includes a substrate and an ITO conductive layer with a thickness of 80 μm. The substrate includes a heat-insulating substrate with a thickness of 470 μm and two layers of heat-conducting substrates. Between the heat conduction substrates, the heat insulation substrate is set on the outer surface of one of the heat conduction substrates, and the outer surface of the other heat conduction substrate is provided with a protective layer, the protective layer is an electroplating layer with a thickness of 100 μm, and the outer surface of the electroplating layer is provided with a thickness The water-oxygen barrier layer is 300 μm; there is also a blue light filter layer and an infrared absorption layer with a thickness of 80 μm between the water-oxygen barrier layer and the electroplating layer, and a scratch-resistant layer with a thickness of 50 μm is provided on the outer surface of the water-oxygen barrier layer.

In this solution, the thermal conductive substrate is installed on both sides of the ITO conductive layer, which can effectively improve the heat dissipation of the ITO conductive layer, and avoid the heat accumulation of the ITO conductive layer during use, which will cause the temperature of the touch screen to rise, which will affect its use effect, and at the same time, heat insulation The substrate can isolate the influence of the heat generated inside the device on the ITO conductive layer. The combination of the heat insulating substrate and the thermally conductive substrate can keep the temperature of the ITO conductive layer below 30°C, thereby ensuring the use effect and sensitivity of the ITO conductive layer, while ensuring the service life of the touch screen. Setting the electroplating layer can play the role and effect of filtering, reducing the damage of blue light and other strong light to the eyes. At the same time, setting a water and oxygen barrier layer can reduce the oxidation of water and oxygen on the ITO conductive layer and the electroplating layer, and improve the service life of the touch screen. The water-oxygen barrier layer combined with the thermally conductive substrate can further block the oxidation of the ITO conductive layer by water, oxygen, and high temperature, thereby improving the service life of the ITO conductive layer, ensuring the sensitivity and reaction speed of the ITO conductive layer, and ensuring the operation fluency. A blue light filter layer and an infrared absorption layer are also provided between the water and oxygen barrier layer and the electroplating or silk screen dark green layer. Preferably, the setting of the blue light filter layer and the infrared absorbing layer can reduce the damage of blue light to eyesight, and the infrared absorbing layer can reduce the damage of the external environment, especially the infrared rays in sunlight, to the touch screen, so that the touch screen can be placed in the sun to rapidly heat up. The service life and quick response of the touch screen can reduce the influence of infrared rays on the service life of the ITO conductive layer and the electroplating layer in the touch screen. The outer surface of the water-oxygen barrier layer is equipped with an anti-scratch layer, which is convenient for improving the protection of the touch screen, and at the same time increases the risk of the touch screen being broken. Protection for touch screen.

Embodiment two

A touch screen with a long service life. The total thickness of the touch screen is 1.5mm, including a substrate and an ITO conductive layer with a thickness of 20μm. The substrate includes a heat-insulating substrate with a thickness of 447μm and two layers of heat-conducting substrates. The ITO conductive layer is arranged on two layers. Between the heat-conducting substrates, the heat-insulating substrate is set on the outer surface of one of the heat-conducting substrates, and the outer surface of the other heat-conducting substrate is provided with a protective layer. The protective layer is a silk-screened dark green layer. The outer surface of the dark green layer is provided with a water-oxygen barrier layer with a thickness of 50 μm, and an infrared absorption layer with a thickness of 40 μm is provided between the water-oxygen barrier layer and the silk-screened dark green layer, and the outer surface of the water-oxygen barrier layer is provided with a thickness of 20 μm. scratch-resistant layer.

In this solution, the thermal conductive substrate is installed on both sides of the ITO conductive layer, which can effectively improve the heat dissipation of the ITO conductive layer, and avoid the heat accumulation of the ITO conductive layer during use, which will cause the temperature of the touch screen to rise, which will affect its use effect, and at the same time, heat insulation The substrate can isolate the influence of the heat generated inside the device on the ITO conductive layer. The combination of the heat insulating substrate and the thermally conductive substrate can keep the temperature of the ITO conductive layer below 30°C, thereby ensuring the use effect and sensitivity of the ITO conductive layer, while ensuring the service life of the touch screen. Setting the dark green layer can play a filtering role and effect, reducing the damage of blue light and other strong light to the eyes, and setting a water and oxygen barrier layer at the same time, reducing the oxidation of water and oxygen on the ITO conductive layer and the dark green layer, and improving the service life of the touch screen In addition, the water-oxygen barrier layer combined with the thermally conductive substrate can further block the oxidation of the ITO conductive layer by water, oxygen, and high temperature, thereby improving the service life of the ITO conductive layer and ensuring the sensitivity and reaction speed of the ITO conductive layer. fluency of operation. The setting of the infrared absorbing layer can reduce the damage of blue light to eyesight, and the infrared absorbing layer can reduce the damage of the external environment, especially the infrared rays in sunlight, to the touch screen, so that the touch screen is placed in the sun and it heats up rapidly, which affects the service life and quick response of the touch screen. , can reduce the influence of infrared rays on the service life of the ITO conductive layer in the touch screen and the dark green layer of silk screen printing. The anti-scratch layer is convenient to improve the protection of the touch screen, and at the same time increases the risk of the touch screen being broken. The smooth surface of the anti-scratch layer can avoid surface scratches, and has hydrophobic and lipophobic effects, which is convenient for improving the protection of the touch screen.

Embodiment three

A touch screen with a long service life. The total thickness of the touch screen is 1.8mm; it includes a substrate and an ITO conductive layer with a thickness of 50 μm. The substrate includes a heat-insulating substrate with a thickness of 457 μm and two layers of heat-conducting substrates. Between the heat-conducting substrates, the heat-insulating substrate is set on the outer surface of one of the heat-conducting substrates, and the outer surface of the other heat-conducting substrate is provided with a protective layer; the protective layer includes an electroplating layer with a thickness of 80 μm, and the outer surface of the electroplating layer is provided with a thickness of The water and oxygen barrier layer is 200 μm; the blue light filter layer with a thickness of 60 μm is also provided between the water and oxygen barrier layer and the electroplating layer; the outer surface of the water and oxygen barrier layer is provided with a scratch-resistant layer with a thickness of 40 μm.

In this solution, the thermal conductive substrate is installed on both sides of the ITO conductive layer, which can effectively improve the heat dissipation of the ITO conductive layer, and avoid the heat accumulation of the ITO conductive layer during use, which will cause the temperature of the touch screen to rise, which will affect its use effect, and at the same time, heat insulation The substrate can isolate the influence of the heat generated inside the device on the ITO conductive layer. The combination of the heat insulating substrate and the thermally conductive substrate can keep the temperature of the ITO conductive layer below 30°C, thereby ensuring the use effect and sensitivity of the ITO conductive layer, while ensuring the service life of the touch screen. Setting the electroplating layer can play a role and effect of filtering, reducing the damage of blue light and other strong light to the eyes. The oxygen barrier layer combined with the thermally conductive substrate can further block the oxidation of the ITO conductive layer by water, oxygen, and high temperature, thereby improving the service life of the ITO conductive layer, ensuring the sensitivity and reaction speed of the ITO conductive layer, and ensuring the operation. fluency. The setting of the blue light filter layer can reduce the damage of blue light to eyesight. The anti-scratch layer is convenient to improve the protection of the touch screen, and at the same time increases the risk of the touch screen being broken. The smooth surface of the anti-scratch layer can avoid surface scratches, and has hydrophobic and lipophobic effects, which is convenient for improving the protection of the touch screen.

Embodiment four

A touch screen with a long service life. The total thickness of the touch screen is 1.8mm; it includes a substrate and an ITO conductive layer with a thickness of 50 μm. The substrate includes a heat-insulating substrate with a thickness of 457 μm and two layers of heat-conducting substrates. Between the heat-conducting substrates, preferably, the side of the heat-conducting substrate close to the ITO conductive layer is provided with wavy patterns, which effectively increases the contact area between the heat-conducting substrate and the ITO conductive layer, thereby improving the heat dissipation effect of the heat-conducting substrate and improving heat dissipation efficiency At least 10%, which further ensures the working temperature of the ITO conductive layer. The ITO conductive layer is an existing technology, including an upper conductive layer and a lower conductive layer, and several contacts are arranged between the upper conductive layer and the lower conductive layer; the heat insulation substrate It is provided on the outer surface of one of the thermally conductive substrates, and a protective layer is provided on the outer surface of the other thermally conductive substrate; the protective layer includes an electroplating layer with a thickness of 80 μm, and a water-oxygen barrier layer with a thickness of 200 μm is provided on the outer surface of the electroplating layer; An infrared absorbing layer with a thickness of 60 μm is also provided between the water-oxygen barrier layer and the electroplating layer; an anti-scratch layer with a thickness of 40 μm is provided on the outer surface of the water-oxygen barrier layer.

In this solution, the heat conduction substrate is set in a wave shape, which effectively increases the contact area, improves the heat conduction effect, and the heat dissipation effect can be increased by at least 10%, thereby ensuring that the temperature of the ITO conductive layer during use is maintained within a suitable range. , installing the thermally conductive substrate on both sides of the ITO conductive layer can effectively improve the heat dissipation of the ITO conductive layer, avoiding the heat accumulation of the ITO conductive layer during use, which will cause the temperature of the touch screen to rise, which will affect its use effect. At the same time, the thermal insulation substrate It can isolate the influence of the heat generated inside the equipment on the ITO conductive layer. The combination of the heat insulating substrate and the thermally conductive substrate can keep the temperature of the ITO conductive layer below 30°C, thereby ensuring the use effect and sensitivity of the ITO conductive layer, and at the same time ensuring The service life of the touch screen. Setting the electroplating layer can play a role and effect of filtering, reducing the damage of blue light and other strong light to the eyes. The oxygen barrier layer combined with the thermally conductive substrate can further block the oxidation of the ITO conductive layer by water, oxygen, and high temperature, thereby improving the service life of the ITO conductive layer, ensuring the sensitivity and reaction speed of the ITO conductive layer, and ensuring the operation. fluency. The infrared absorbing layer can reduce the damage to the touch screen caused by the external environment, especially the infrared rays in the sun. Putting the touch screen in the sun will cause it to heat up rapidly and affect the service life and rapid response of the touch screen. It can reduce the impact of infrared rays on the ITO conductive layer and electroplating in the touch screen effect on the service life of the layer. The anti-scratch layer is convenient to improve the protection of the touch screen, and at the same time increases the risk of the touch screen being broken. The smooth surface of the anti-scratch layer can avoid surface scratches, and has hydrophobic and lipophobic effects, which is convenient for improving the protection of the touch screen.

The invention effectively solves the influence of temperature, oxygen, moisture and external infrared rays on the touch screen, so that the ITO conductive layer can always work normally under the temperature environment below 30°C, and reduces the sensitivity and reaction of high temperature to the ITO conductive layer. The impact of speed increases the service life of the touch screen.

The above are the preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the present invention, any technical solution based on the present invention, etc. Obvious changes such as effective conversion and simple replacement all fall within the protection scope of the present invention.

Claims

A touch screen with a long service life, comprising a substrate and an ITO conductive layer, characterized in that: the substrate includes a heat-insulating substrate and two layers of heat-conducting substrates, the ITO conductive layer is arranged between the two layers of heat-conducting substrates, and the heat-insulating substrate is arranged in it A protective layer is provided on the outer surface of one layer of heat conduction substrate and the outer surface of the other layer of heat conduction substrate.
The touch screen with long service life according to claim 1, characterized in that: the protective layer comprises an electroplating or silk screen printing dark green layer, and the outer surface of the electroplating or silk printing dark green layer is provided with a water and oxygen barrier layer.
The touch screen with long service life according to claim 2, characterized in that: the thickness of the electroplating or silk screen dark green layer is 30-100 μm; the thickness of the water and oxygen barrier layer is 50-300 μm.
The touch screen with long service life according to claim 1, characterized in that: a blue light filter layer and/or an infrared absorption layer is further provided between the water and oxygen barrier layer and the electroplating or silk screen dark green layer.
The touch screen with long service life according to claim 4, characterized in that: the thickness of the blue light filtering layer or the infrared ray absorbing layer is 40-80 μm.
The touch screen with long service life according to claim 2, characterized in that an anti-scratch layer is provided on the outer surface of the water-oxygen barrier layer.
The touch screen with long service life according to claim 6, characterized in that: the thickness of the anti-scratch layer is 20-50 μm.
The touch screen with long service life according to claim 1, characterized in that: the thickness of the heat insulation substrate and the heat conduction substrate are both 100-500 μm.
The touch screen with long service life according to claim 1, characterized in that: the thickness of the ITO conductive layer is 20-80 μm.
The touch screen with long service life according to any one of claims 1-9, characterized in that: the total thickness of the touch screen is 1.5-2.1mm.