TFT display is a display technology widely used in electronic digital products such as smartphones, tablet PCs, laptops and instrumentation displays. It is known for its image quality with vibrant colors, high contrast and fast response time.TFT display consists of several important components:
Glass substrate: serves as the infrastructure of the display.
Driver IC: Controls the switching of pixel points to realize the display of images.
Polarizer: Ensures that light travels in a specific direction to enhance the display.
Backlight: Provides the necessary brightness support to make the screen content visible.
Flat Panel Cable (FPC): connects the display to the control system and ensures the transmission of signals and power.
Role of Flexible Printed Circuit Board (FPC)
Flexible Printed Circuit (FPC) plays the role of a bridge in the TFT display, which is crucial to ensure the normal operation of the display function. The following are its main roles:
1. Signal Transmission
FPC is used to connect the TFT screen with the motherboard or driver board, and is responsible for transmitting control signals and image data to the TFT screen. These signals include information such as refresh rate, resolution, and color depth, and are the basis for realizing the screen display.
2. Customized Connection
According to different electronic product design requirements, FPC can flexibly adjust its connection mode, interface type and bending form, in order to adapt to the compact design space and meet diversified product design requirements.
3. Power supply
In addition to signal transmission, the FPC also undertakes the task of providing the necessary power for the TFT display, including power supply to the LED backlight module and providing operating voltage for the internal electronic components.
4. Structure size optimization
Utilizing its flexible and flat characteristics, FPC helps to integrate the display module more compactly inside the product, allowing a certain degree of bending, which is ideal for application scenarios that require special shapes or space constraints.
5. Reduced Electromagnetic Interference (EMI)
High-quality FPC design effectively reduces EMI and ensures signal stability and integrity, resulting in improved display performance.
6. Material Requirements for Cable Arrangement
In order to ensure optimal performance, the FPC cable needs to have a certain degree of flexibility, usually made of calendered copper, this material has good bending resistance and flexibility. Polyimide (PI) copper-clad foils are a common choice due to their excellent flexibility and heat resistance. Considering the fineness of the ITO lines within the TFT panel, FPC is one of the very critical components of TFT materials.
Conductivity is an important indicator of a TFT material’s ability to conduct current. Hongcai lcd display screen manufacturer uses high-quality calendered copper materials and conducts electrical performance tests, mechanical performance tests, temperature and humidity cycling tests, as well as RoHS/REACH compliance evaluations on all of its products to ensure that the quality of the TFT displays it produces is stable and reliable.
