7CP476-020 触摸屏

Description

7CP476-020 触摸屏

7CP476-020是一款触摸屏，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，可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。

7CP476-020一般包括触摸屏控制器（卡）和触摸检测装置两个部分。其中，触控屏控制器（卡）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；触摸检测装置一般安装在显示器的前端，主要作用是检测用户的触摸位置，并传送给触控屏控制卡。

根据工作原理，触摸屏可以分为多种类型，例如电阻式触摸屏、电容式触摸屏、红外线式触摸屏等。电阻式触摸屏利用压力感应进行控制，当手指触摸屏幕时，两层导电层在触摸点位置就有了接触，电阻发生变化，然后送触摸屏控制器。控制器侦测到这一接触并计算出位置，再根据模拟鼠标的方式运作。而电容式触摸屏依靠检测屏幕上某个或些点的微小电容值变化来进行判断触点。红外线式触摸屏则是在显示器上加上光点距架框，无需在屏幕表面加上涂层或接驳控制器，光点距架框的四边排列了红外线发射管及接收管，在屏幕表面形成一个红外线网，用户以手指触摸屏幕某一点，便会挡住经过该位置的横竖两条红外线，计算机便可即时算出触摸点位置。

7CP476-020在各个领域都有广泛的应用，如手机、平板电脑、汽车中控屏幕等，极大地提升了用户与设备的交互体验。然而，不同的触摸屏类型和特性可能会导致其在不同场景下的性能有所差异，因此在实际应用中需要根据具体需求进行选择。

7CP476-020 触摸屏

7CP476-020 is a touch screen, is a kind of induction liquid crystal display device that can receive the input signal of touch, when touching the graphic button on the screen, the haptic feedback system on the screen can drive a variety of connecting devices according to a pre-programmed program, which can be used to replace the mechanical button panel, and create a vivid audio and video effect by the liquid crystal display screen.

7CP476-020 generally includes two parts: a touch screen controller (card) and a touch detection device. Among them, the main function of the touch screen controller (card) is to receive touch information from the touch point detection device, and convert it into contact coordinates, and then send to the CPU, it can receive the command sent by the CPU and execute it; The touch detection device is generally installed in the front end of the display, and its main function is to detect the user’s touch position and transmit it to the touch screen control card.

According to the working principle, the touch screen can be divided into many types, such as resistive touch screen, capacitive touch screen, infrared touch screen and so on. Resistive touch screen uses pressure sensing to control, when the finger touches the screen, the two conductive layers have contact at the touch point position, the resistance changes, and then send the touch screen controller. The controller detects this contact and calculates the position, then operates in a manner that simulates a mouse. Capacitive touch screens rely on detecting small capacitance changes at one or more points on the screen to determine the contact. Infrared touch screen is on the display with a light point distance frame, no need to add coating on the screen surface or connect the controller, the light point distance frame is arranged on the four sides of the infrared transmitting tube and receiving tube, forming an infrared network on the screen surface, the user touches a point on the screen, it will block the two infrared rays passing through the position. The computer can then calculate the position of the touch point in real time.

7CP476-020 has a wide range of applications in various fields, such as mobile phones, tablet computers, automotive control screens, etc., which greatly improves the user’s interaction experience with the device. However, different touch screen types and characteristics may cause their performance to differ in different scenarios, so it is necessary to select according to specific needs in practical applications.