4 Wire Resistive Touch Screens

How it works:

4-Wire resistive touch screen is the preferred solution for low cost applications. It consists of a conductive bottom layer (ITO Glass or Film) and a conductive top layer (ITO Film). The two layers are suspended by many very small spacer dots.When a certain point is touched, the top layer contacts the bottom layer and a voltage charged by the controller is applied to the bottom layer's electrodes. The coordinate X axis of the touch point can be detected by measuring the voltage value thru the top ITO layer and the coordinate Y axis of the touch point can be detected in the same way by changing voltage input to the top layer's electrodes.

 

Technical Specifications:

 

Circuiting Rating: 5V DC, 35mA

Surface Hardness:        3H

Light Transmission

Film+Film>77%

Hitting Life Expectancy:   Over 1 million

Film+Glass>83%

Scoring Life Expectancy:  Over 100,000

Contact Bounce: <10ms

Operating Temperature:  -20 oC ~+70 oC

Resolution: 4096x4096

Storage Temperature:    -30 oC ~ +80 oC

Linearity: 1.5%£¨<1.0% By Request£©

Choices of Glass Thickness:0.55mm, 0.7mm, 1.1mm, 2.0mm, 3.0mm

Operating Force: 10g~100g

Choices of Glass: Normal Glass, Chemically strengthened glass

 

Benifit:

1.Input flexibility ¨Cfinger (with/without glove), stylus, pen, credit card.

2.FPC tail technology surpasses those of our competitors.

3.FPC has lower resistance and is more flexible than PET or ITO film used by other suppliers.

4.Excellent optical performance even with anti-glare hard coating film.

5.Haze < 6% (best optical performance in the industry).

6.Various choices of surface treatments available.

7.Anti-Newton ring, anti-glare, special chemical hard coating,anti-reflection.

 

 

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