1.4 Wire Resistive Touch Screen Description

4 wire resistive touch screen comprises several layers, the most important of which are two thin, transparent electrically-resistive layers separated by a thin space. These layers face each other with a thin gap between. The top screen (the screen that is touched) has a coating on the underside surface of the screen. Just beneath it is a similar resistive layer on top of its substrate. One layer has conductive connections along its sides, the other along top and bottom. A voltage is applied to one layer, and sensed by the other. When an object, such as a fingertip or stylus tip, presses down onto the outer surface, the two layers touch to become connected at that point: The panel then behaves as a pair of voltage dividers, one axis at a time. By rapidly switching between each layer, the position of a pressure on the screen can be read.

Resistive touch screen is used in restaurants, factories and hospitals due to its high resistance to liquids and contaminants. A major benefit of resistive touch technology is its low cost. Additionally, as only sufficient pressure is necessary for the touch to be sensed, they may be used with gloves on, or by using anything rigid as a finger/stylus substitute. Disadvantages include the need to press down, and a risk of damage by sharp objects. Resistive touch screens also suffer from poorer contrast, due to having additional reflections from the extra layers of material (separated by an air gap) placed over the screen.

2. Size: 10" to 22" (OEM for custom size, MOQ limited)

3. Touch Point: single touch

4. Sample for testing acceptable, 3-5 days delivery time after payment confirmation.

5. Application: MID, digital photo frame, vehicle GPS, POS, kiosk. ad displayer, ATM, inquiry machine, terminal equipment, self-service device, medical equipment, industrial equipment, game machine, education displayer, ticket machine, etc.

6. Feature

1). economic

2).compatible with different system

3).high accuracy and sensitivity

4).custom, OEM & ODM

5).widely application for POS, terminal, ad displayer, game machine, lcd monitor, etc.

7. Specification

General Size	10" , 10.1" , 10.2" , 12.1" , 13.3" , 14.1" , 15" , 15.6" , 17" , 18.5" , 19" , 21" , 21.5" , 22"
Custom Size	10" , 10.1" , 10.2" , 12.1" , 13.3" , 14.1" , 15" , 15.6" , 17" , 18.5" , 19" , 21" , 21.5" , 22"
Type	Input device
Resolution(Interpolation)	4096*4096
Linearity Error	<1.5%
Response Speed	<10ms
Input Method	Finger or gloved hand (rubber ,cloth or leather)
Touch Times	> 1000000 times
Touch Activation Force	15~70g
Surface Durability	Meets pencil hardness 3H (per ASTM D3363)
Light Transmission	90%
Operation Environment	Operating Range: -10°C ~ 60°C
	Storage Range: -20°C ~ 70°C
Relative Humidity	Operating Range: 0%~90% RH (no dew falls)
	Storage Range: 0% to 95% RH (no dew falls)
Operation Voltage	Typical +DC 5V, +4.75V to +5.25V
Power Supply	USB or PS/2 Interface
Interface	Full Duplex USB 2.0 (Full Speed) Plug and play compatible
	Serial RS-232. Baud Rate: 9600, 8 Data Bits, 1 Stop Bit, No Parity
Current	5mA~25mA
Electrostatic Endurance	No abnormal appearance after 10kv, 100Ω, 250PF electrostatic used
Isolation Resistance	>20MΩ @ DC 25V
Resistance	300Ω< X Axis <900Ω, 200Ω< Y Axis <800Ω (Varies with different size)
Agency Approvals	CE, FCC, RoHs
Operation System	Linux/ Dos / Windows ME/95/98 / NT4.0/XP/2000/ 7 /Mac OS