Dongguan CJTouch Electronic Co., Ltd
Dongguan CJTouch Electronic Co., Ltd
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How PCAP Touch screen Work?
A Projected Capacitive Touch (PCT; also PCAP) technology consists of an insulator such as glass, which is coated with a transparent conductor, like ITO (indium tin oxide). The user’s finger conducts electricity, so touching the surface of the screen results in a distortion of the screen’s electrostatic field; that distortion is measurable as a change in capacitance.
In other words, a capacitance-based sensor is a circuit designed to sense touch by coupling with the electrical fields; touch causes the capacitance of the circuit to change.
Different technologies may be used to determine the location of the touch; the location is then sent to the controller for processing.
Limitations of capacitive touch screen technology:
Capacitive touch screen technology is often recommended to customers who would like the confidence of a brand name LCD such as NEC, which the capacitive touch screen would then be retrofitted to.
Main Feature
Specification of Product
| Technical specification | |
| Type | Projected touch panel |
| Interface | USB |
| Number of touch point | 10 |
| input voltage | 5V ---- |
| Pressure endurance value | <10g |
| Input | Hand writing or capacitive pen |
| Transmittance | >90% |
| Surface Hardness | ≥6H |
| Usage | The specification is applied to transparent and handwriting input |
| capacitive touch panels | |
| Application | It's applied in ordinary electric equipments and automatic office facilities |
| Cover Lens Specification | |
| Pressure Value | 400 ~500 mPA above 6u |
| Ball Drop Test | 130g±2g, 35cm, No damage after the impact at the central area for once. |
| Hardness | ≥6H Pencil: 6H Pressure: 1N/45. |
| Environment | |
| Working temperature and humidity | -10~+60ºC, 20~85% RH |
| Storage temperature and humidity | -10~+65ºC, 20~85% RH |
| Humidity resistance | 85% RH, 120H |
| Heat resistance | 65ºC, 120H |
| Cold resistance | -10ºC, 120H |
| Thermal shock | -10ºC(0.5hour)-60ºC(0.5hour) by 50 cycles |
| Anti - glare Test | Incandescent lamp (220V,100W) , |
| operating distance over 350mm | |
| Altitude | 3,000m |
| Working Environment | Directly Under sunlight ,indoor and outdoor |
| Software(Firmware) | |
| Scanning | Auto full screen scanning |
| Operate system | Win 7,Win 8,Win10, Andriod,Linux |
| Calibration tool | Precalibrated & Software can be download in CJTouch Website |
Picture of Product
Technical Drawing