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초록
The variations in the threshold voltage and the mobility of In-Ga-Zn-O thin-film transistors (TFTs) were significantly compensated by the proposed compensation method. The luminance difference at each pixel in the large-size organic light-emitting devices (OLEDs) was dramatically decreased less than 10% due to the stich mural and the applied data voltage difference at low gray scale level. Luminance uniformities of up to 99% were achieved for all gray levels of the OLEDs by using the external circuit and optical compensation with angle calibration.
키워드
OLED; In-Ga-Zn-O TFT; compensation pixel method; luminance uniformity; Current density; Gallium compounds; Indium compounds; Light emission; Luminance; Organic light emitting diodes (OLED); Pixels; Thin film transistors; Thin films; Threshold voltage; Zinc compounds; Compensation method; In-ga-zn-o; Luminance uniformity; OLED; Optical compensation; Organic light-emitting devices; Pixel methods; Thin-film transistor (TFTs); Thin film circuits
- 제목
- Enhancement of the Luminance Uniformity in Large-Size Organic Light-Emitting Devices Based on In-Ga-Zn-O Thin-Film Transistors by Using a New Compensation Method
- 저자
- Shin, Hong Jae; Kim, Tae Whan
- 발행일
- 2019-05
- 유형
- Article
- 권
- 7
- 호
- 1
- 페이지
- 557 ~ 560