17.2: Optical Compensation Study of MicroLED with Pure PAM Driving Scheme

In this study, a loop iterative approach is employed to gradually get closer to the actual red, green, and blue color coordinates and brightness ratio under a given grayscale to realize the brightness and chromaticity compensation (Color Demura) for LTPS TFT MicroLED display. This approach is applied to a 9.38‐inch 480 × 960 resolution MicroLED display, achieving brightness uniformity more than 95% and chromaticity non‐uniformity less than 1JNCD, respectively.

Section: Introductionmentioning

confidence: 99%

P‐138: Color Demura for LTPS TFT MicroLED Displays

Lyu,

Wu,

Zhao

et al. 2024

P‐9.17: Demura Algorithm Based on Generative Adversarial Network

Li,

Hao,

Zhang

et al. 2024

Self Cite

As a widely acknowledged next‐generation display technology in the display industry, Micro LED has its advantages, but also faces significant issues with the mura phenomenon. Moreover, traditional Demura algorithms have numerous limitations when applied to Micro LEDs, leading to limited compensation effects. This paper first introduces the specific problems of current Demura algorithms in Micro LED applications and proposes a Demura algorithm based on Generative Adversarial Networks (GANs) from deep learning, targeted to address these issues. Subsequently, it delves into the principles of Generative Adversarial Networks, their integration with Demura algorithms, and finally, analyzes and summarizes the actual usage effects. The paper concludes with an analysis and outlook on potential improvements and future applications of the model.

P‐11.2: Study on the Optical Compensation Improvement Effect of Micro LEDs at Various Brightness Levels

Hao,

li,

Zhao

et al. 2024

Self Cite

Optical compensation (Demura) is a crucial technology in the production process of active‐matrix organic light‐emitting diode (AMOLED). And with the continuous advancement of micro light‐emitting diode (Micro LED) technology, Demura techniques are also employed to enhance the quality of Micro LED products. This article initially applies an AMOLED full grayscale compensation scheme to perform compensation on a 9.38‐inch Micro LED sample. However, the compensation effect falls short of expectations. Subsequently, an analysis and compensation for the display effects of each grayscale level in Micro LED are conducted, highlighting the phenomenon that the Mura morphology and distribution of Micro LED change under different brightness levels. Finally, two methods are employed to carry out full grayscale compensation for Micro LED, achieving a notably effective compensation outcome.