5‐1: <i>Distinguished Paper:</i> Eliminate Angular Color Shift in Top Emitting OLEDs through Cavity Design

Dong, Chen; Fu, Xiangyu; Amoah, Stephen; Rozelle, Adam; Shin, Dong-Sig; Salehi, Amin; So, Franky

doi:10.1002/sdtp.12850

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…The current research on the color shift of OLED displays is mainly to reduce the color shift effect caused by the change of viewing angle [4][5][6]. There is less research on the color shift caused by aging.…”

Section: Introductionmentioning

confidence: 99%

The effect of blue pixel aging on AMOLED color shift

Tong

Wu²,

Guo³

et al. 2023

Fourth International Conference on Optoelectronic Science and Materials (ICOSM 2022)

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The color shift problem caused by OLED aging has always been a hot issue in the field of OLED display. The difference of pixel attenuation rate of different colors will seriously affect the display effect of the device. In this paper, image signal generators and lifetime testers were used to test the brightness and color coordinate changes of OLED display under different initial brightness during the aging process. In addition, the causes of white dot color shift and the trajectory of color shift were explored. The research results show that the reduction of blue light ratio caused by the rapid decay of blue pixel efficiency is the cause of the color shift of the white picture, and the color shift trajectory from the white light area to the yellow light area causes the white picture to be yellowish. In order to correct the color shift of the white screen, the thickness of the HIL (hole injection layer) is optimized. The study found that when the thickness of the hole injection layer is 1070 Å, the chrominance efficiency of blue pixels can be kept in the peak area, and the improvement effect is significant, the slope of the color shift locus is reduced to 1.26, the color shift value is reduced from 0.0051 to 0.0017, and the JNCD is less than one.

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Section: Introductionmentioning

confidence: 99%