Development of 55‐in. 8K AMOLED TV based on coplanar oxide thin‐film transistors and inkjet printing process

Wu, Zhongyuan; Yan, Liangchen; Li, Yongqian; Feng, Xuehuan; Shih, Huai‐Ting; Kim, Tae-Jin; Peng, Yifei; Yu, Junchun; Dong, Xue

doi:10.1002/jsid.900

“…Other attempts have been made to circumvent this issue. In some literature, ETL is skipped altogether for inkjet processability [3]; Polymeric EML and ETL are used in conjunction with orthogonal solvents for greater interfacial stability [4]. The most recent literature uses alcohol/glycol solvent system [5] with limited capacity for higher resolution inkjet-printing.…”

Section: Introductionmentioning

confidence: 99%

33‐1: All‐Inkjet‐printed AMOLED Display with Improved Efficiency and Lifetime

Kim

¹

,

Kang

²

,

Kim

³

et al. 2022

Symp Digest of Tech Papers

View full text Add to dashboard Cite

Inkjet‐printing of organic light‐emitting diodes(OLEDs) is a revolutionary technology aimed at large‐size panel production, high OLED material consumption efficiency and lower manufacturing costs. Here we demonstrate all‐inkjet‐printed 12.4‐inch AMOLED display by developing a novel ink composition for ETL which enables uniform ETL formation with full orthogonality to small‐molecule EML.

show abstract

“…Active-matrix organic light-emitting diode (AMOLED) displays have progressed toward large size and ultrahigh definition, mainly for television use [1][2][3] , because of their wide viewing angles, high contrast, and fast response time. For large AMOLED displays, oxide thinfilm transistor (TFT) backplanes are widely used as driving TFTs to control the pixel current through the OLED device, whose luminance is almost in proportion to the current density.…”

Section: Introductionmentioning

confidence: 99%

[Paper] Development of an External Compensation Technique for Burn-in Degradation in a 4K Flexible AMOLED Display

Usui¹,

Okada²,

Shimizu³

et al. 2022

MTA

1

0

View full text Add to dashboard Cite

In ultra-high-definition active-matrix organic light-emitting diode (AMOLED) displays, the external compensation technique improves burn-in and uneven luminescence by varying the current through the driving thin-film transistors (TFTs). However, sensing the current through the driving TFT for every pixel is time-consuming because of the increased number of scanning lines. Hence, in this study, we propose a method to reduce the number of measurements and shorten the measurement time by interpolating from the current measurement data for surrounding pixels. We show that this method can be applied to a 4K flexible AMOLED display and can satisfactorily compensate degradation due to burn-in.

show abstract

“…Other attempts have been made to circumvent this issue. In some literature, ETL is skipped altogether for inkjet processability [3]; Polymeric EML and ETL are used in conjunction with orthogonal solvents for greater interfacial stability [4]. The most recent literature uses alcohol/glycol solvent system [5] with limited capacity for higher resolution inkjetprinting.…”

Section: Introductionmentioning

confidence: 99%