New Pixel Circuit Design Employing an Additional Pixel Line Insertion in AMOLED Displays Composed by Excimer Laser-Crystallized TFTs

Author

Jin, Guanghai ; Choi, Sangmoo ; Kim, Moojin ; Kim, Sungchul ; Song, Jonghyun

Author_Institution

Phys. Dept., Chungnam Nat. Univ., Daejeon, South Korea

Volume

8

Issue

8

fYear

2012

Firstpage

479

Lastpage

482

Abstract

Active matrix organic light-emitting diode (AMOLED) displays are fabricated from polycrystalline silicon, which is formed in the single and double (overlap) scanned area during the excimer laser annealing (ELA) process. A redundant pixel line (RPL) design is proposed to remove the overlapping mura and, as a result, a 5-in AMOLED display is successfully fabricated without any non-uniform line image on the overlapping scanned area. This result indicates that the fabrication of a large-sized AMOLED panel is possible using ELA crystallization through an RPL design.

Keywords

LED displays; elemental semiconductors; excimer lasers; laser beam annealing; organic light emitting diodes; thin film transistors; AMOLED display; ELA; RPL; Si; TFT; active matrix organic light emitting diode; excimer laser annealing; excimer laser crystallization; fabrication; pixel circuit design; pixel line insertion; polycrystalline silicon; redundant pixel line; size 5 in; Active matrix organic light emitting diodes; Laser beams; Lasers; Performance evaluation; Silicon; Surface morphology; Thin film transistors; Polycrystalline silicon (poly-Si); active-matrix organic light-emitting diode (AMOLED); excimer laser crystallization; redundant pixel line; thin-film transistor (TFT);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2012.2191533

Filename

6202718