LCD module： LCD screen + LED backlight plate + PCB plate + iron frame.
The display part of power terminal, instrument and instrument is liquid crystal module, which is equivalent to the picture tube in CRT.
Other parts include power supply circuit, signal processing circuit and so on, of course, the shell and so on.
The module is mainly divided into screen and backlight components. The two parts are assembled together, but they work independently of each other (that is, the circuit is not related).
The principle of LCD is that the backlight module emits a uniform surface light, and the light is transmitted to our eyes through the LCD screen. The function of the screen is to process these light pixels to display the image. Both parts contain a large number of components, let's not go into details here.
