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학술지 Device Characteristics of Top-Emitting Organic Light-Emitting Diodes Depending on Anode Materials for CMOS-Based OLED Microdisplays
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저자
이현구, 조현수, 변춘원, 강찬모, 한준한, 이정익, 김호권, 이정환, 김민석, 조남성
발행일
201812
출처
IEEE Photonics Journal, v.10 no.6, pp.1-9
ISSN
1943-0655
출판사
IEEE
DOI
https://dx.doi.org/10.1109/JPHOT.2018.2877196
초록
We investigated the optical reflectance, surface roughness, and sheet resistance of aluminum (Al)/titanium nitride (TiN), titanium (Ti), and tungsten (W) layers on Si substrates, which are available in the CMOS foundry, for organic light-emitting diode (OLED) microdisplays. The devices with different metal anode layers exhibited different hole-injection properties and OLED performances, owing to the different optical and electrical properties of metal anode layers. Based on the OLED characteristics, the Al/TiN layer was selected as an anode layer for OLED microdisplays. A green monochromatic OLED microdisplay panel was designed and implemented using the 0.11-μm CMOS process. The density of pixels was ~2 351 pixels per inch and the panel's active area was 0.7 in in diagonal. The resolution of the panel was 1 280 × 3 × 1 024, corresponding to SXGA. The panel was successfully operated, and the maximal luminance was ~460 cd/m2.
키워드
CMOS, microdisplay, OLEDoS, Organic light-emitting diodes (OLEDs)
KSP 제안 키워드
Active area, CMOS Process, Device characteristics, Metal anode, Optical Reflectance, Optical and electrical properties, Organic light-emitting diodes(OLEDS), Si substrate, Surface roughness, TiN layer, Titanium Nitride