How Delta's touch screen works

Create Date: 2024-8-30 12:03:23|Source: Delta/Delta

Delta's touch screen consists of a contact detection component and a touch screen controller.

                               How Delta's touch screen works

The contact detection component is installed in front of the display screen to detect the user's contact orientation and is sent back to the touch screen controller; The primary function of Delta's touch screen controller is to receive contact information from the contact point detection device, convert it into contact coordinates, and then send it to the CPU, which can accept the instructions sent by the CPU and execute them.

Delta's touch screen is controlled using pressure sensitivity. The first part of the resistive touch screen is a resistive film screen that matches the appearance of the display very well, which is a multi-layer composite film, which uses a layer of glass or hard plastic plate as the bottom layer, and the surface is coated with a layer of transparent oxide metal (transparent conductive resistance) conductive layer, and then covered with a layer of hardened outer surface, smooth and anti-rub plastic layer, its inner and outer surface is also coated with a layer of coating, and there are many small (less than 1/1000 inch) transparent isolation points between them to separate and insulate the two layers of conductive layers. When the finger touches the screen, the two conductive layers are in contact at the contact point, and the resistance changes, generating signals in the X and Y directions, and then sending them to the touch screen controller. The controller detects this contact and calculates the orientation of (X,Y), which then behaves in a manner that simulates a mouse. This is the most basic principle of the resistive skill touch screen.
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