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Touch screen transparent conductive film and preparation method thereof

A transparent conductive film and touch screen technology, which is applied to the conductive layer on the insulating carrier, electrical digital data processing, instruments, etc., can solve the problems of high light reflectivity, poor durability, disconnection, etc. on the surface of the transparent film, and achieve good multi-point touch control function, stable surface without scratching, and high transparency

Active Publication Date: 2009-06-24
GUANG DONG DONGBOND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the transparent conductive film is prepared from such a base material, the light reflectance on the surface of the transparent film is large, the transparency is poor, and the scratch and bending resistance are poor, and the resistance increases after scratching or an open circuit phenomenon occurs.
The conductive film is a pair of films that are arranged opposite to each other through the spacer. They are touched by pressing and dotting from one of the screen panels, and have a strong contact, so that the resistance and durability characteristics are reduced. Because of the dot characteristics, the conductive film is There are defects of poor durability and shortened life
[0005] Moreover, the above-mentioned transparent conductive film will also produce Newton rings due to film expansion and curling, resulting in poor recognition. For these problems and poor adaptation to the environment, scratches lead to increased resistance, and disconnection. Scattering layer and laminate suppress reflected light to obtain highly reliable transparent conductive film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Coat one side of 25um thick polyethylene terephthalate (PET) base film with easy-adhesive layer, coating solid content 0.1g / m 2 , By heating 80℃-85℃, coating speed is 1-10m / min per minute, coating uniform thickness is within ±0.1um, to obtain easy-adhesive layer, transparent substrate material is treated with anti-reflection coating after ultrasonic surface treatment , Thickness 80nm, refractive particles 20nm, prepared by dispersion acrylate mixture into coating solution, dried by heating at 85℃-95℃, irradiated with high pressure mercury lamp to obtain anti-reflection layer, and then cleaned by ultrasonic surface. Anti-fouling hard coating, coating temperature 95℃-100℃ drying to obtain a thickness of 100nm, hardness 3Gpa anti-fouling anti-fouling coating, on the other side (lower side) coated with easy-adhesive layer, compared with the upper side adhesive layer , Except for the different positions, keep the same as above, and finally pass 4×10 containing 80% argon and 20% ...

Embodiment 2

[0068] Coat one side of a 50um thick polyethylene naphthalate (PEN) base film with an easy-adhesive layer, with a coating solid content of 0.2g / m 2 , By heating at 85℃, coating speed of 5m / min, coating uniform thickness within ±0.12um, a transparent substrate with easy adhesion layer on the side is obtained, after ultrasonic surface treatment, anti-reflective coating is coated with thickness 60nm, The refractive particles are 20nm, the coating solution is prepared by the dispersion acrylate mixture, dried by heating at 85°C, and cured by high-pressure mercury lamp irradiation to obtain the anti-reflection layer, and then the anti-fouling hard coating is applied by ultrasonic surface cleaning treatment. The temperature is 95℃, the thickness is 100nm, the hardness is 3.2GPa antifouling hard coating is obtained by drying, and finally 4×10 containing 80% argon and 20% oxygen is passed on the lower side of the other side 3 A transparent conductive film was obtained by vacuum sputtering...

Embodiment 3

[0081] The 50um thick polyethylene naphthalate (PEN) base film is subjected to ultrasonic roughening treatment, and the anti-reflection layer is directly coated on the upper side, the thickness is 80nm, the refractive particles are 20nm, and the coating is prepared by the dispersion acrylate mixture. The cloth liquid is dried by heating at 85°C, irradiated and cured by a high-pressure mercury lamp to obtain an anti-reflective layer, and then coated with an anti-fouling hard coating through ultrasonic surface cleaning treatment, and dried at a coating temperature of 95°C to obtain a thickness of 100nm and a hardness of 3.2 Gpa anti-fouling hard coating. Coat the easy-adhesion layer on the lower side of the PEN with a coating solid content of 0.1g / m 2 , The coating temperature is 85℃, the coating speed is 5m / min, and the uniform thickness of the coating is within ±0.1um. After drying, the easy-adhesive coating is obtained, and then ultrasonic cleaning is performed. A transparent con...

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Abstract

The invention relates to a transparent conductive film of a high performance touch screen and a preparation method thereof. The transparent conductive film comprises an easy bonding layer (optional), an anti-reflection layer and a hard antifouling coating which are coated on the upper side surface of base material in sequence, and an easy bonding layer (optional) and an ITO conducting layer on the lower side surface of the base material. The transparent conductive film has the advantages of excellent chemical proofing capability, antifriction and anti-damage capabilities, water resisting property, repression of swelling and low probability of Newton ring, and both the transparent conductive film and the touch screen provided by the invention have a stable distinctive character.

Description

Technical field [0001] The invention relates to a transparent conductive film for a touch screen and a preparation method thereof. The conductive film is transparent and conductive in a visible light environment, and is suitable for use in touch screens, liquid crystal displays, electroluminescence displays, electromagnetic wave shielding, and transparent electrodes. Background technique [0002] With the entry of touch screen products into thousands of households, the requirements for touch quality are getting higher and higher, the competition is becoming more and more fierce, and the cost performance is especially important. The types of touch screens include infrared optical method, ultrasonic method, capacitive method and impedance film method. Due to the simple structure and excellent price performance of the impedance film method, it has been rapidly popularized in recent years. The impedance film method touch screen is widely used in consumer products. Such as touch scree...

Claims

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Application Information

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IPC IPC(8): H01B5/14G02F1/133B32B7/02B32B9/00B32B33/00G06F3/041
Inventor 刘萍
Owner GUANG DONG DONGBOND TECH CO LTD
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