Reflective 3D pixel configuration for enhancing efficiency of OLED displays
Journal
Organic Electronics
Journal Volume
103
Date Issued
2022
Author(s)
Chen Y.-T
Wen, Sheng-Wen
Liao, Po-Hsiang
Lee, Wei-Kai
Lee, Chang-Cheng
Huang, Chun-Wei
Yang, Yu-Hung
Lin, Kai-Chen
Chang, Chi-Jui
Su, Guo-Dong
Chen, Chung-Chia
Kwak, B. Leo
Visser, Robert Jan
Abstract
Although active-matrix organic light-emitting diode displays (AMOLEDs) have been widely applied, effective optical out-coupling techniques possessing both integration compatibility and image quality remain highly desired for further improving their efficiency and power consumption performances. In our previous simulation studies, a 3-dimensional (3D) reflective pixel structure filled with a patterned high-index material was proposed for boosting light extraction efficiency of common top-emitting AMOLED pixel devices. In this work, we conducted experimental studies on the proposed 3D OLED pixel configuration to validate the simulation and design. 3D OLED pixel devices with varied pixel dimensions were implemented and their structures, electrical properties, efficiencies, and EL characteristics were characterized. Significant efficiency gains were obtained with the μm-scale reflective 3D pixel devices and experiment results well corroborated multiscale optical simulation results, confirming effectiveness of the 3D OLED pixel for enhancing light extraction of OLED displays. ? 2022 Elsevier B.V.
Subjects
3D pixel configuration
Light extraction
Multiscale optical simulation
OLED pixel
Energy efficiency
Extraction
Image enhancement
Pixels
Three dimensional displays
3-dimensional
3-dimensional pixel configuration
Active matrixes
OLED displays
Optical simulation
Optical-
Organic light emitting diode display
Organic light emitting diodes (OLED)
SDGs
Type
journal article