A single-inductor bipolar-output converter with power conservation mechanism (PCM) for driving cholesteric LCD

Kuan Yu Chu*, Yu Huei Lee, Ming Yan Fan, Ke-Horng Chen, Sheng Fa Liu, Pao Hsien Chiu, Sandy Chen, Chun Yu Shen, Ming Ta Hsieh, Huai An Li

*Corresponding author for this work

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

1 Scopus citations

Abstract

Cholesteric liquid-crystal display (Ch-LCD) has the bi-stable characteristic to achieve the energy-saving for the green technology. Backlight is even unnecessary in the Ch-LCD system. The single-inductor bipolar-output (SIBO) converter is one of best candidate to supply the power management function for the Ch-LCD with dual positive and negative output voltages by using a single inductor for a compact solution. The energy control methodology with the current-mode control and the power conservation mechanism (PCM) can strengthen the voltage quality to get high display quality. The test chip fabricated by 0.25 μm CMOS technology demonstrates the non-noticeable cross-regulation at dual outputs with 90% peak power conversion efficiency.

Original languageEnglish
Title of host publication49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011
Pages1300-1303
Number of pages4
StatePublished - 1 Dec 2011
Event49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011 - Los Angeles, CA, United States
Duration: 15 May 201120 May 2011

Publication series

Name49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011
Volume3

Conference

Conference49th Annual SID Symposium, Seminar, and Exhibition 2011, Display Week 2011
CountryUnited States
CityLos Angeles, CA
Period15/05/1120/05/11

Keywords

  • Cholesteric liquid-crystal display (Ch-LCD)
  • Cross-regulation
  • Power conservation mechanism (PCM)
  • Single-inductor bipolar-output (SIBO) converter

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