21‐3: 2D IRC Compensation Technology Research

AMOLED displays are widely used in smart phones, laptops, car and other scenes. With the continuous development of AMOLED technology, the performance requirements for display screens are becoming higher and higher, among which Luminance Uniformity and color difference (Delta‐E) have become important indicators to measure the quality of AMOLED display screens.Due to the existence of IR Drop in the display screen, the resistance of the metal wire has a voltage drop and the difference between the input and output of the driver signal and the input and output of different pixel distances, resulting in uneven current distribution, which seriously affects the picture quality. This paper presents a 2‐D IRC(IR compensation) compensation technique. The compensation system integrates the compensation techniques of GIR(Global IR Drop), LIR (Local IR drop) and CUC(color uniformity compensation), and the Threshold voltage Vth (Threshold) of pixels in different areas within the surface voltage) to compensate.The compensation system compensates for Luminance Uniformity and Delta‐E over a wide range of grey scales and backgrounds.This design scheme simplifies the inplane regional current model, optimizes the current statistics scheme, optimizes the debugging scheme, and makes the 2‐D IRC compensation technology have lower power consumption.