The working principle of the image LCD display module mainly involves the arrangement change of liquid crystal molecules under the action of electric field, so as to realize the display of images.
The working principle of the LCD display module can be summarized as follows:
The backlight assembly emits uniform surface light, which is transmitted to our eyes through the LCD screen. The function of the LCD screen is to process these lights by pixels to display images1.
The raw materials of the LCD display module include LCD screen, backlight module, circuit board, wiring board, etc. The production process includes proofing, circuit board production, wiring board production, backlight module installation, LCD screen installation, testing and packaging.
The LCD display module is a device that converts electrical signals into visible light. Its working principle is mainly to use the arrangement change of liquid crystal molecules under the action of electric field to realize image display. The liquid crystal molecules are in a disordered arrangement state without the action of electric field. After the light passes through the liquid crystal layer, it cannot pass through the second layer of polarizer, so the image on the screen cannot be seen clearly. When an electric field is added, the liquid crystal molecules will be arranged in a direction perpendicular to the substrate, so that light can be emitted through the second layer of polarizer, thereby displaying an image.
The TFT liquid crystal module controls the scanning circuit to send electrical signals to the pixel points through the input signal. The transistor is turned on or off under the drive of the scanning line and the data line, and the degree of light penetration is controlled by changing the direction of rotation of the liquid crystal particles. The liquid crystal molecules rotate or arrange according to the control voltage of the transistor, changing the transmittance of the liquid crystal layer, thereby forming a displayed image. The backlight module provides background lighting to make the displayed image visible.
The liquid crystal display screen uses the special arrangement state of liquid crystal molecules to control the degree of light penetration, thereby realizing the display of images. The liquid crystal molecules can change the arrangement state by applying power and electric field, and then adjust the light transmittance to realize the switching of pixels. There are gate electrodes and source electrodes on both sides of the liquid crystal layer. The change of the current signal causes the arrangement state of the liquid crystal molecules to change, so that the degree of light penetration changes, thereby realizing the adjustment of the brightness and color of the pixel points.
