What is a liquid crystal module?
LCD module, also commonly known as LCD Module (LCM), is the core functional component of LCD display screens You can understand it as a set of "semi-finished " display solutions
What is a liquid crystal module?
The Liquid Crystal Display Module, commonly known as LCD Module (LCM), is the core functional component of a liquid crystal display. You can think of it as a "semi-finished" display solution.
It includes all the basic components necessary to light up the screen and display images, but usually does not include the appearance structure (such as metal casing, front frame) and the final user interface.
The core composition of a liquid crystal module
A typical liquid crystal module is usually "assembled" from the following components:
1. Liquid crystal display panel (LCD Panel)
This is the core part, namely, the glass screen itself we see. It is filled with liquid crystal materials, and by applying voltage to change the arrangement of liquid crystal molecules, the passage of light is controlled, thus forming images.
2. Backlight Unit
LCD itself does not emit light and requires a backlight source to be visible to us.
The backlight unit typically consists of an LED light bar, a light guide plate, a diffusion film, a prism sheet, etc. They work together to provide a uniform and bright light source for the liquid crystal glass.
3. Driver Integrated Circuit (IC)
Driver IC: receives digital signals from the main control board (such as mobile phone motherboard, TV motherboard) and converts them into precise voltages to control the deflection of liquid crystal molecules. It determines the key performance of the module, such as resolution, color depth, and refresh rate.
PCB circuit board: carries driver ICs and other electronic components, and is the physical foundation of circuits.
4. Connecting components
FPC (Flexible Circuit Board): Like a soft "ribbon cable", it connects the driver IC and PCB with the LCD glass.
Connector: Used to receive external power and signals.
For a more intuitive understanding, the following figure clearly shows the main components and structural relationships of the LCD module:
LCD module vs. LCD display screen vs. LCD display screen
These three concepts are often mixed up, but they have subtle yet important differences:
Liquid crystal module (LCM): As mentioned above, it is the core functional component. Engineers and manufacturers often use this term. It requires external power supply and signals to function.
LCD Panel: usually refers to the piece of LCD glass that is part of the module. But in everyday speech, people sometimes use "screen" to refer to the entire module.
LCD Monitor/Display: Refers to a complete and immediately usable final product. It is based on the LCD module, with the addition of all things such as the housing, power board, control board, buttons, interfaces, etc. For example, a complete computer monitor or a TV on your desk.
Simple metaphor:
LCD glass=car engine
LCD module=engine+gearbox+driveshaft (one powertrain)
LCD display=a complete car that can be driven
Application scenarios
LCD module is the heart of almost all modern electronic display devices, widely used in:
Industrial control equipment: PLC human-machine interface, industrial touch screen
Medical equipment: monitor, diagnostic equipment screen
Car display: central control screen, dashboard
Consumer electronics: smartphones, tablets, laptops (in these devices, modules are highly integrated)
Home appliances: Control panels for smart refrigerators and air conditioners
Commercial display: advertising machines, self-service query terminals
I hope this explanation can help you fully understand the concept of "LCD module". If you would like to know its workflow or specific types of modules, I can provide further information.
AUO LCD Display：https://www.idtdisplay.com/products/AUO_LCD_Displays/
INNOLUX LCD Display：https://www.idtdisplay.com/products/industrial_touch_screen/
