PMOS LDD structure and conditions for wide driving range of driving TFT

  • Heechul Jeon
  • , Sunyoul Lee
  • , Yongsoo Lee
  • , Kyungsoo Jang
  • , Youn Jung Lee
  • , Junsin Yi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper examines techniques to improve the driving range (Dr-range) of a driving TFT to obtain an accurate color gradient for AMOLEDs. The electrical characteristics of PMOS polycrystalline silicon thin-film transistors (TFTs) with a lightly doped drain (LDD) have been studied using ATLAS device simulation tool. The width of LDD was varied from 0 to 4 fjm, and the doping concentration was changed. The electrical behaviors of PMOS LDD TFT were studied both experimentally and numerically. This paper shows that an LDD with a width of 2 /jm has a wide DR-range. LDDs with widths of 0, 3, or 4 /jm have small DR-ranges, or have insufficient on-current values and cannot be used as driving TFTs. A wide DR-range is obtained with a doping concentration of less than 1 1013/cm2.

Original languageEnglish
Title of host publication20th International Display Workshops 2013, IDW 2013
PublisherInternational Display Workshops
Pages404-407
Number of pages4
ISBN (Electronic)9781510827783
StatePublished - 2013
Event20th International Display Workshops 2013, IDW 2013 - Sapporo, Japan
Duration: 3 Dec 20136 Dec 2013

Publication series

NameProceedings of the International Display Workshops
Volume1
ISSN (Print)1883-2490

Conference

Conference20th International Display Workshops 2013, IDW 2013
Country/TerritoryJapan
CitySapporo
Period3/12/136/12/13

Keywords

  • Amoled
  • Dr-range
  • Driving range
  • Ldd
  • Pmos

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