1.1"-22" 4 wire resistive touch sceen
Product Description
Specification
|
| Surface Hardness |
3H |
| Transmittance |
85 %↑ |
| OperatingTemperature |
-10°C ~ 60°C |
| Work Life |
Over 1million times |
| Operation Voltage |
DC5V |
| X、Y Resistance |
200Ω ~ 900Ω(a little bit different due to different sizes) |
| Linearity |
< 1.5% |
| Film Type |
Anti glare hard coating |
| Opearting Pressure |
15~70g |
| Storage Temperature |
-20°C ~ 70°C |
| Noise |
5 m sec ~ 15 m sec |
| Operating Current |
5mA ~ 25mA |
| Connector Resistance |
200Ω< X xis <800Ω
300Ω< Y Axis <900Ω |
| Insulation Resistance |
20MΩ↑ @ DC 25V |
| Electrostatic Endurance |
No abnormal appearance after 10kv, 100W, 250PF electrostatic used. |
Size Collection
|
|
Model NO.
|
Outside（mm)
|
VA（mm)
|
AA（mm)
|
FPC(mm)
|
PIN(mm)
|
|
| FT4W7.0-456 |
166*100 |
156*88.5 |
154*86.5 |
50.0 |
1.0 |
|
| FT4W7.0-883 |
164.8*99.8 |
155.08*88.18 |
150.08*82.58 |
42.0 |
0.5 |
|
| FT4W7.0-869 |
166.2*100.2 |
154.6*87.4 |
153.6*86.4 |
30.15 |
0.5 |
|
| FT4W7.0-1358 |
165.8*99.8 |
153.0*86.0 |
153.0*82.0 |
30.4 |
1.0 |
|
| FT4W7.0-0936B |
164.9*100 |
154.15*85.95 |
152.15*83.95 |
30.5 |
2.54 |
|
| FT4W7.0-0945 |
164.9*100.0 |
153.6*86.15 |
151.2*83.75 |
45.0 |
2.54 |
|
| |
|
|
|
|
|
|
4Wire Resistive Touch Panel Working Theory
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 layers 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 layers electrodes.
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