The Development Trends of Ultra-Fine-Pitch LED Driver ICs
1. Definition of LED driver IC IC is Integrated circuit. It uses a number of processes to connect the physical tubes, diodes, resistors, capacitors, inductors, and other components with the wiring to make small semiconductor wafers or dielectric substrates. Then the wafers are packaged in the shells to form a microstructure with the desired circuit functionality. In the LED display, the functions of the driver IC are to receive the display data in accordance with the protocol, produce PWM and current time change, output PWM currents related to brightness, grayscale, refresh, and others, and illumine LEDs. 2. Costs of ultra-fine-pitch LED driver ICs The driver IC accounts for about 10% of the total cost of the ultra-fine-pitch LED display, while it comes in at 5% of the total cost of the traditional LED display. The cost of driver IC is mainly composed of wafer cost and sealing test cost. Wafer contributes to a high percentage of cost. 3. The development t...