A Demura Compression Algorithm Based on the Distribution Characteristics of Mura

ABSTRACT AMOLED displays have been widely used for mobile applications in recent years. Mura defects such as luminance and color nonuniformities on the display panel are often observed, and mura compensation is commonly applied to restore uniform image quality. Due to on‐chip memory limitations, it is essential to achieve efficient compression of compensation data. In this work, we propose an optimized demura compression algorithm based on the distribution characteristics of mura compensation values. The algorithm first employs a two‐stage attenuation process: first‐stage block attenuation and second‐stage inter‐level attenuation to reduce data fluctuations; then, a skip mode is introduced to bypass part of the residual coding, further improving compression efficiency. Experimental results demonstrate that the proposed approach achieves a stable compression ratio exceeding 13 times, significantly reducing on‐chip memory requirements, and offering a practical solution for high‐resolution display applications.