高分辨率AM Micro-LED显示器设计及其驱动实现

Design and Driver Implementation of High Resolution AM Micro-LED Display

摘要:

设计了一种基于蓝宝石衬底氮化镓基蓝色/绿色多量子阱LED外延片,利用成熟的LED芯片工艺制备了高像素Micro-LED芯片阵列；在Micro-LED芯片和CMOS驱动芯片表面设计并制备了金属凸点,采用高精度倒装焊接工艺实现LED显示芯片和CMOS驱动芯片的良好键合,成功制备了分辨率为640×360的Micro-LED显示器。同时,以FPGA为控制器,设计了Micro-LED显示器的驱动系统,该驱动系统对输入的图像数据进行缓存并将其处理为显示器所能接收的单色图像数据,最后将处理后的图像数据写入驱动芯片并实现图像显示。

Abstract:

In this paper, a high-pixel micro-LED chip array was prepared based on a blue/green multi-quantum well LED epitaxial chip based on gallium nitride on sapphire substrate by using mature LED chip technology. Metal protruding points were designed and prepared on the surface of both micro-LED chip and CMOS driver chip, and good bonding between LED display chip and CMOS driver chip was achieved by adopting high-precision inversion welding process, and micro-LED display with resolution of 640×360 was successfully prepared. At the same time, the driver system of micro-LED display was designed with FPGA as the controller. Then the driver system can cache the input image data and process it into monochromatic image data which can be received by the display, and finally writes the processed image data into the driver chip to realize the image display.