2000 Piece/Pieces per Month 7 inch 4 wires resistive touch screen panel usb touch screen
Packaging & Delivery
Carton according to the international standard or your special request.
1 - 10
To be negotiated
Resistive touch screen Introduce:
Mainly through the principle of pressure sensing to achieve the operation and control of the screen content, this touch screen body part is a multi-layer composite film that is very compatible with the surface of the display, the first layer is the bottom layer of glass or plexiglass, the second layer The partition layer, the third layer is a multi-resin surface layer, and the surface is also coated with a transparent conductive layer, which is covered with a layer of outer surface hardened, smooth and scratch-resistant plastic layer, conductive layer on the surface of the multi-lipid surface and glass. The layer sensor is separated by a number of tiny compartments through the surface layer. When the touch table is laminated, it contacts the bottom layer. The controller simultaneously reads the symmetrical current from the four corners and calculates the distance of the finger position. This touch screen utilizes Two layers of highly transparent conductive layers form the touch screen with a distance of only 2.5 microns between the two layers. When the finger touches the screen, the two conductive layers that are normally insulated from each other have a contact at the touch point position, because one conductive layer turns on the 5V uniform voltage field in the Y-axis direction, so that the voltage of the detection layer changes from zero to zero. Non-zero, the controller detects this turn-on, performs A/D conversion, and compares the obtained voltage value with 5V to obtain the Y-axis coordinate of the touch point. Similarly, the coordinates of the X-axis are obtained. It is the most basic principle common to all resistance technology touch screens.