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Journal Article
Light Diffusing Effects of Nano and Microstructures on OLED with Microcavity
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- Authors
- Doo-Hee Cho, Jin-Wook Shin, Chul Woong Joo, Jonghee Lee, Seung Koo Park, Jaehyun Moon, Nam Sung Cho, Hye Yong Chu, Jeong-Ik Lee
- Issue Date
- 2014-10
- Citation
- Optics Express, v.22, no.21, pp.A1507-A1518
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Project Code
- 14PB1200, Development of fundamental technology for light extraction of OLED, Lee Jeong Ik
- Abstract
- We examined the light diffusing effects of nano and microstructures on microcavity designed OLEDs. The results of FDTD simulations and experiments showed that the pillar shaped nano-structure was more effective than the concave micro-structure for light diffusing of microcavity OLEDs. The sharp luminance distribution of the microcavity OLED was changed to near Lambertian luminance distribution by the nanostructure, and light diffusing effects increased with the height of the nanostructure. Furthermore, the nano-structure has advantages including light extraction of the substrate mode, reproducibility of manufacturing process, and minimizing pixel blur problems in an OLED display panel. The nanostructure is a promising candidate for a light diffuser, resolving the viewing angle problems in microcavity OLEDs.
- KSP Keywords
- Display Panel, FDTD simulation, Manufacturing processes, Nano and microstructures, Nano-structures, OLED display, light extraction, luminance distribution, structural characterization(Microstructure), viewing angle