4‐4: High PPI MicroLED display driver circuit and device structure

Abstract

This paper proposes a new type of display driver circuit and TFT device structure, studies the brightness control technology of high PPI Micro LED display, uses the inverter PWM driver module loaded in the traditional internal compensation driver circuit, when the low gray scale display, By triggering PWM module, the PWM is used to further divide the low gray scale under PAM mode again, so as to increase the gray level. Meanwhile, the introduction of Micro LED reverse NMOS and PMOS laminator TFT increases the PPI from 233 to 314 retinal level. Realized the Micro LED HD display and low brightness controllable demand.