2711P-T9W21D8S 触摸屏 用于检测用户触摸位置

2711P-T9W21D8S 触摸屏（Touch Panel）又称为“触控屏”、“触控面板”，是一种可接收触头等输入讯号的感应式液晶显示装置。当接触了屏幕上的图形按钮时，屏幕上的触觉反馈系统可根据预先编程的程式驱动各种连结装置，用以取代机械式的按钮面板，并借由液晶显示画面制造出生动的影音效果。2711P-T9W21D8S 触摸屏由触摸检测部件和触摸屏控制器组成。触摸检测部件安装在显示器屏幕前面，用于检测用户触摸位置，接受后送触摸屏控制器；而触摸屏控制器的主要作用是从触摸点检测装置上接收触摸信息，并将它转换成触点坐标，再送给CPU，它同时能接收CPU发来的命令并加以执行。根据触摸屏的工作原理和传输信息的介质，可把触摸屏分为四种，它们分别为电阻式、电容感应式、红外线式和表面声波式。触摸屏已经广泛应用到了手机、平板电脑、零售业、公共信息查询、多媒体信息系统、医疗仪器、工业自动控制、娱乐与餐饮业、自动售票系统、教育系统等领域。

2711P-T9W21D8S

2711P-T9W21D8S Touch Panel, also known as “touch screen” or “touch panel”, is an inductive LCD display device that can receive input signals such as contacts. When in contact with graphic buttons on the screen, the tactile feedback system on the screen can drive various connecting devices based on pre programmed programs to replace mechanical button panels and create dynamic audio-visual effects through LCD display screens. The 2711P-T9W21D8S touch screen consists of touch detection components and a touch screen controller. The touch detection component is installed in front of the display screen to detect the user’s touch position, receive and send the touch screen controller; The main function of the touch screen controller is to receive touch information from the touch point detection device, convert it into contact coordinates, and then send it to the CPU. It can also receive commands from the CPU and execute them. According to the working principle of touch screens and the medium for transmitting information, touch screens can be divided into four types: resistive, capacitive, infrared, and surface acoustic wave. Touch screens have been widely used in fields such as mobile phones, tablets, retail, public information inquiry, multimedia information systems, medical equipment, industrial automation, entertainment and catering, automatic ticketing systems, education systems, etc.