Action principle of the projected capacitive touch panel: There are two layers of glass in the lower surface of the ITO layer, the electric field formed X-axis and Y-axis, the electric field through the power lines to keep the glass surface electric field balance. Once the finger is close to the glass surface, and the finger electrode X or Y to form a new field, so that local changes in capacitance, the controller determines the position based on a change in capacitance. Capacitive touch screen with the traditional resistive touch screen is very different. Resistive touch screens at work, you can only judge a touch point, if two or more touch points, you can not make the right judgments, so resistive touch screen applies only to click on, drag the judge and some simple actions. The capacitive touch screen multi-touch, you can decompose the user's touch is collecting more signal and the decision signal significance of the two working to complete the complex movements of the judgment, while projected capacitive touch panel can sense light touch , better durability, light transmission rate up to 90%, high transmittance than the traditional resistive touch screen.

Applications:

phones, laptops, one machine, handheld devices, e-books, car navigation systems, game consoles and other electronic products on.

Technical parameters and specifications:

Supply voltage: 2.8V~5.5V DC	Surface hardness: ≥6H (glass panel) ≥3H (PET panel)
Input: conductive metal pen or finger	Life: Click crossed ≥2 million times
Touch Response Time: 5 ~ 15ms	Operating pressure: capacitive sensing, no operating pressure
Resolution: 4096 * 4096	Operating temperature: -40°C ~ + 85°C
Contacts: maximum support 10:00	Storage temperature: -40°C ~ + 90°C
Panel Type: Ordinary glass, chemically strengthened glass, tempered glass, PC boards, acrylic panels, PET	Glass Thickness: 0.55 / 0.7 / 1.1 / 1.8 / 2.0 / 3.0mm PET Thickness: 0.188mm, 0.25mm Ranging from PC board, acrylic board thickness needed
Glass Thickness Sensor can do: 0.55 / 0.7 / 1.1mm Sensor Film Thickness: 0.125mm	OCA Thickness: 0.125 / 0.175 / 0.25mm LOCA Thickness: 0.15mm
Supported operating systems: Android, Linux, Win7, Win8, WinCE, SCM	Communication Interface Type: IIC, USB, RS232
Communications voltage 1.8V, 3.3V, 5V	Working current: 2.5 ~ 14mA
Sleep current: less than 0.2mA	Anti-jamming capability (electrostatic machine play): Contact discharge ± 12KV discharge gap ± 25KV
Optical parameters: transmittance ≥90%, the atomization of ≤3%, ≥98% clarity

Projected capacitive touch screen

Guangzhou KDTouch Electronic Co., Ltd. (KDTouch)was established in February 1, 2007, is a professional design, production and sales of touch screens and membrane switches and other technology products, professional company, since its establishment the company has been committed to high-precision, high-quality manufacturing, and continue to introduce the latest technology and equipment from the United States, Japan, Taiwan, mainly for communications equipment, industrial control, automotive GPS, household appliances, medical equipment and other production and processing of high-quality touch screen and membrane switches.Since its establishment has always insisted the introduction of foreign advanced manufacturing technology, and the use of the United States, Japan, Taiwan, first-class equipment and raw materials, implementation of strict quality management, was able to continue to grow in the industry put into use ERP management system, and through TS16949: 2004 environment system certification. Since its inception, the key record of excellence, professionalism and innovative, and constantly open up development, make unremitting efforts to develop new products and new technologies to better quality products to win the domestic and foreign customers trust and praise.In February 2007, the first phase investment of 25 million, the company's existing plant area of over 10,000 square meters, clean workshop 6,500 square meters, of which more than 3000 square meters to 10,000 clean workshop, 2500 square meters for the 1000 clean room, 1000 square meters of one hundred clean room. The company from the leadership to the general staff of hard work, the production of various types of products successfully sold to the Americas, Europe and Australia, monthly production reached 1200K / month (7 inches).