Hangzhou Xuhong Technology Co.,Ltd
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In the TFT LCD, various electrical components are connected to each other, and the PCB substrate of the circuit board is used as a medium and carrier. The PCB substrate is made of material that is insulated and not easy to bend, and the fine line material that can be seen on the surface is copper foil. These copper foil circuits are used to provide circuit connections of PCB upper components.
TFT LCD uses SMT technology with PCB substrates. Welding is on the same aspect as components. The components used are small, which can increase the utilization rate of the PCB area. The corresponding symbols will be marked on the side of various components on the PCB substrate, for the corresponding functions. For example, the resistance r function is to reduce the voltage and control the current; the capacitance C is a bypass component for input power and various components; the inductance L is the energy to generate energy in the DC/DC circuit, which turns the input voltage into a high voltage. Crystal tube Q is used as switch and is used for amplification of current and voltage.
In the small and medium -sized TFT LCD, the FPC of soft printing circuit boards is commonly used for the connection between the display screen and the PCB substrate, and between the TFT LCD and the host. Compared with the PCB hard board, the FPC has light weight, small volume, and good heat dissipation. It can be bent freely and folded. It can be arbitrarily moved and expanded according to the spatial layout requirements to reach the integrated wire connection of component assembly. The disadvantage of FPC is that the mechanical strength is small, the possibility of heavy processing is low, it is difficult to check, it is easy to produce wrinkle scars, high costs.
AUO LCD:https://www.auo-lcd.com/products/auo-lcd-screen/
