Elimination of Halo mura in homogeneous alignment liquid crystal displays based on dichroic absorption

Junho Jung

doi:https://doi.org/10.36463/idw.2023.0034

15:50 〜 16:10

[LCT2-4L] Elimination of Halo mura in homogeneous alignment liquid crystal displays based on dichroic absorption

*Junho Jung^1,2, Yeon Jin Han¹, Hyun Soo Jeon¹, Young Jin Lim¹, Dong-Jin Lee², GwangTae Kim², JeongKi Park², MinSu Kim¹, Seung Hee Lee¹ (1. Jeonbuk National University (Korea), 2. LG Display (Korea))

high contrast ratio, dichroic dye, halo mura, mini-LED, viewing angle

https://doi.org/10.36463/idw.2023.0034

Local dimming enables us to achieve high dynamic range in LCDs, but can cause halo mura. In this study, we demonstrate vertically aligned dichroic dye film in unit cells which absorb light in oblique angles to eliminate halo mura. Placing this film above an analyzer significantly enhances local contrast ratio (CR) in oblique views and minimizes surface reflection in all LCDs.

Proceedings of the International Display Workshops Volume 30 (IDW '23)

[LCT2-4L] Elimination of Halo mura in homogeneous alignment liquid crystal displays based on dichroic absorption