The difference between the simulated screen and the digital screen

There is no difference between the analog screen and the digital screen itself. When driving, IC is used to drive the row and drive the digital signal.
First, there is no difference between the analog screen and the digital screen on the screen itself. The main difference is in the circuit. All the pixels added to the LCD screen are all digital signals. At the edge of the screen, there are many rows driving IC, the so-called driver. The circuit board behind the screen is mainly the controller, the controller converts the received signal to the drive signal that meets the timing requirements of the drive, and gives the driver the corresponding pixel.
Analog screen and digital screen are the same in this writing part, and their difference is mainly on input. The digital screen is directly input to the digital signal. Each color signal of the RGB is converted to a number of digital signals by the video processing circuit, which is directly sent to the control driver on the screen. The A/D conversion is completed in the previous circuit. The analog screen input is three primary color analog signal input, and its A/D conversion is completed on the LCD screen circuit.
Two, this problem has been said many times. The key difference is whether the input RGB signal is analog or digital. Point out one of your mistakes. The real input to the screen is a specific voltage value. The size of the voltage value determines the size of the liquid crystal deflection, which determines how much light is transmitted. It is considered that the drive screen needs a simulation signal, but it is absolutely not a digital signal (for RGB signals, of course the timing signal is a signal. ” If the input RGB is a simulation signal, such a screen is called a simulation screen, which is sampled within the DRIVER IC of the LCM, and then the sample is sent to the TFT. If the input RGB signal is digital, it is called a digital screen, and D/A conversion is required inside the DRIVER IC of LXM. This part of the work is completed by the GAMMA correction circuit.
(LCD true color shows the use of TFT LCD, active dot matrix display, the need to use the source drive (source driver) and the gate driver (gate driver) to control the source and gate of the LCD field effect transistor FET. The source driver receives the display data driven LCD column display, also known as the data driver (data driver), and the gate driver controls progressive scan.
Three, the input signal of the analog screen is a simulated RGB signal. In general, each line should be reversed with the previous line, and there should be a coordinated VCOM signal. The bias voltage below + 10V and below 10V is required. The vertical resolution is generally about 230; the input signal of the digital screen is divided into TTL and LVDS, and the red and green three colors are generally used in 6 to 8 figures. The number of words is expressed without external bias, and the vertical resolution is generally more than 400.
In fact, the digital screen and the analog screen are all driven by digital signals. Now the digital screen and the analog screen are distinguished from the interface of the LCD screen. The screen that can directly input the analog signal is the analog screen, and the digital signal is the digital screen. The analog screen has more A/D converters than the digital screen, which is used to convert analog signals into digital signals. The digital screen is displayed directly by the digital signal. The digital screen can be divided into TTL, LVDS and so on from its signal transmission mode.