4-wire Resistive Touch Panel

I、 Description: II 、 What is a four-wire touch screen? The four-wire touch screen contains two resistive layers.One layer has a vertical bus on the left and right edges of the screen, and the other has a horizontal bus at the bottom and top of the screen, as shown in figure 4.In order to measure...
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Product Details

I、 Description: 

Best price with 100% high qaulity 10.4" visual door phone touch panel

Specification

Size

10.4” inch

Item No.

XHC-104008-2-K

Structure

ITO glass+ITO film+tail

Outline dimension

 234.6mm*142.60mm

View Area

 228.2mm*136.2mm

Total  thickness

1.45±0.15mm

Cover glass treatments

Anti-glare,Anti-reflective,anti-finger,anti-explosion

Operating system

Android, Linux, Win CE, Win7,Win8, XP

Operating Condition

-10℃ to 60℃,  ≤90% RH

Storage condition

-20℃ to 70℃,  ≤90% RH

Transparency

>77%

Surface Hardness

≥6H

Customized

Available

IIWhat is a four-wire touch screen?

The four-wire touch screen contains two resistive layers.One layer has a vertical bus on the left and right edges of the screen, and the other has a horizontal bus at the bottom and top of the screen, as shown in figure 4.In order to measure in the X axis, the left bus is biased to 0V, and the right bus is biased to VREF.Connect the top or bottom bus to ADC and make a measurement when the top and bottom are in contact.

In order to measure in the Y-axis direction, the top bus is biased to VREF, and the bottom bus is biased to 0V.The ADC input is connected to the left bus or the right bus, and the voltage can be measured when the top layer is in contact with the bottom layer.Figure 5 shows a simplified model of the four-wire touch screen in two layers.For the four-wire touch screen, the ideal connection method is to connect the offset to the positive reference input of the bus ADC of the VREF, and the negative reference input of the bus with the set of 0V to the ADC.

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