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Three-wavelength white organic light-emitting diodes on silicon for high luminance and color gamut microdisplays
Journal of Industrial and Engineering Chemistry ( IF 5.9 ) Pub Date : 2021-09-20 , DOI: 10.1016/j.jiec.2021.09.014
Seong Ji Lee 1, 2 , Chan-mo Kang 1 , Jin-Wook Shin 1 , Dae Hyun Ahn 1 , Chul Woong Joo 1 , Hyunsu Cho 1 , Nam Sung Cho 1 , Hyoc Min Youn 3 , Young Jae An 3 , Jin Sun Kim 3 , Jonghee Lee 2 , Hyunkoo Lee 4
Affiliation  

Organic light-emitting diode (OLED) microdisplays have attracted considerable attention owing to their low power consumption, rapid response, high contrast ratio, and self-luminescence. To expand the use of OLED microdisplays, high luminance and vivid color are required. Herein, we developed a high-luminance, low-voltage, three-wavelength, top-emitting white OLED (WOLED) using a silicon substrate for complementary metal–oxide–semiconductor-based, full-color microdisplay applications. Optimal thickness of the emitting layer and thickness and position of the interlayer were determined to improve device performance. The device exhibited luminance of ∼4,200 cd/m2 at 3.3 V, and the maximum luminance reached 170,000 cd/m2 at 11.4 V. In addition, red, green, and blue color filters were deposited onto the WOLED after the thin-film encapsulation process to verify feasibility of the device for full-color microdisplay applications. The color gamut of the developed WOLED with color filters was 136% compared to sRGB. The maximum luminance and color gamut of the developed device is among the highest values obtained to date for OLED microdisplays.



中文翻译:

用于高亮度和色域微型显示器的硅基三波长白色有机发光二极管

有机发光二极管(OLED)微显示器由于其低功耗、快速响应、高对比度和自发光等优点而备受关注。为了扩大OLED微型显示器的使用,需要高亮度和鲜艳的色彩。在此,我们开发了一种高亮度、低电压、三波长、顶部发光的白色 OLED (WOLED),它使用硅基板,用于基于互补金属氧化物半导体的全彩色微显示器应用。确定发射层的最佳厚度以及中间层的厚度和位置以提高器件性能。该器件在 3.3 V 下表现出约 4,200 cd/m 2的亮度,最大亮度达到 170,000 cd/m 2在 11.4 V。此外,在薄膜封装工艺之后,红色、绿色和蓝色滤色器沉积在 WOLED 上,以验证该设备用于全彩色微显示应用的可行性。与 sRGB 相比,开发的带有滤色器的 WOLED 的色域为 136%。所开发设备的最大亮度和色域是迄今为止 OLED 微显示器获得的最高值之​​一。

更新日期:2021-11-17
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