Improved design of 3D OLED display pixel configuration for higher efficiency

Chang-Cheng Lee; Po-Hsiang Liao; Yi-Ting Chen; Sheng-Wen Wen; Chun-Wei Huang; B. Leo Kwak; Robert Jan Visser; Chung-Chih Wu

doi:10.1117/12.2594590

1 August 2021 Improved design of 3D OLED display pixel configuration for higher efficiency

Chang-Cheng Lee, Po-Hsiang Liao, Yi-Ting Chen, Sheng-Wen Wen, Chun-Wei Huang, B. Leo Kwak, Robert Jan Visser, Chung-Chih Wu

Author Affiliations +

Proceedings Volume 11808, Organic and Hybrid Light Emitting Materials and Devices XXV; 118081N (2021) https://doi.org/10.1117/12.2594590
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Conference Poster

Abstract

Previously we proposed a highly effective extraction-enhancing OLED display pixel structure based on embedding the top-emitting OLED inside a 3D reflective bank structure covered with a patterned high-index filler. For top-emitting OLED using transparent top electrode (e.g., TCO like ITO), optical simulation indicated that the optical out-coupling efficiency can be enhanced by nearly 2.8 times (e.g., from 24% to 68%). Here in this work, through optical simulation and design, we show that the overall optical out-coupling efficiency of such 3D OLED pixel configuration can be further enhanced by forming the distributed Brag reflector (DBR) between the top-emitting OLED and the high-index filler and strengthening the microcavity effect of the top-emitting OLED.

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Chang-Cheng Lee, Po-Hsiang Liao, Yi-Ting Chen, Sheng-Wen Wen, Chun-Wei Huang, B. Leo Kwak, Robert Jan Visser, and Chung-Chih Wu "Improved design of 3D OLED display pixel configuration for higher efficiency", Proc. SPIE 11808, Organic and Hybrid Light Emitting Materials and Devices XXV, 118081N (1 August 2021); https://doi.org/10.1117/12.2594590

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