An LCD (Liquid Crystal Display) module is primarily composed of an LCD panel, backlight, FPC (Flexible Printed Circuit), and ICs, hence the name LCD module.
I. LCD Panel
The LCD panel, commonly known as glass, is the most crucial core component of an LCD module. The quality of a display largely depends on the quality of the LCD panel, directly impacting the viewing experience. LCD panels are typically manufactured as a large sheet, cut into smaller panels of varying sizes to form a core component.
II. LCD Backlight
The backlight is the light source behind the LCD module. Without a light source, the display will not show anything. The backlight consists of a light source, a light guide plate, optical films, and other structural components.
Backlight brightness can be controlled by adjusting the LEDs and power consumption. Higher brightness can be achieved by modifying the backlight structure. However, it cannot be infinitely bright; its brightness is determined by a comprehensive design based on the internal structure and overall power consumption.
III. FPC in LCD Modules
FPC (Flexible Printed Circuit) is a flexible circuit board with high wiring density, light weight, thinness, and good bendability. LCD modules use FPCs for conductivity to achieve display functionality.
It is an indispensable and important component. However, FPC is not the only conductive component; some large screens use interfaces such as USB for power supply. FPC is a common conductive component for small and medium-sized LCD modules.
IV. IC in LCD Modules
IC, commonly known as a chip, is a miniature electronic device or component. Using specific processes, transistors, diodes, resistors, capacitors, inductors, and other components required for a circuit, along with their interconnections, are fabricated on one or several small pieces of semiconductor wafer or substrate, and then packaged in a casing to form a miniature structure with the required circuit function. With it, any function can be achieved.