Nano-ampere Current Sensing Technique for OLED Mobile Displays

Minhyun Jin, Hyejin Im, Minkyu Song, Soo Youn Kim

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

1 Scopus citations

Abstract

In this paper, we propose a nano-ampere current sensing technique for organic light-emitting diode (OLED) mobile displays. The nano-ampere current sensing system consists of a current integrator and an 8-bit single-slop analog to digital converter (SS-ADC). In order to reduce area and power consumption, the current integrator and a comparator of the SS-ADC share an amplifier, called differential difference amplifier (DDA). From the experimental results, we obtain 399.21 pA of accuracy with 8-bit current sensing resolution ranged from 0 to 102.2 nA. The proposed current sensing circuit was fabricated with a 90 nm CMOS technology and chip size is about 600 μm × 3000 μm.

Original languageEnglish
Title of host publicationProceedings - International SoC Design Conference 2018, ISOCC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages101-102
Number of pages2
ISBN (Electronic)9781538679609
DOIs
StatePublished - 2 Jul 2018
Event15th International SoC Design Conference, ISOCC 2018 - Daegu, Korea, Republic of
Duration: 12 Nov 201815 Nov 2018

Publication series

NameProceedings - International SoC Design Conference 2018, ISOCC 2018

Conference

Conference15th International SoC Design Conference, ISOCC 2018
Country/TerritoryKorea, Republic of
CityDaegu
Period12/11/1815/11/18

Keywords

  • Analog to digital converter
  • Current integrator
  • Differential difference amplifier
  • Low current sensing
  • Organic light-emitting diode

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