A 10-Bit 1026-Channel Column Driver IC with Partially Segmented Piecewise Linear Digital-to-Analog Converters for Ultra-High-Definition TFT-LCDs with One Billion Color Display

Chih Wen Lu, You Gang Chang, Xing Wei Huang, Jhih Siou Cheng, Po Yu Tseng, Chih Hsien Chou

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

2 Scopus citations

Abstract

Herein, a 10-bit 1026-channel column driver IC with partially segmented piecewise linear digital-to-analog converters (DACs) is designed, simulated, and prototyped. This device is intended to improve the color depth and gamut of ultra-high-definition thin-film transistor liquid-crystal displays. The proposed column driver can output a precise gamma-corrected transfer curve without loss of effective bit resolution. An area-efficient two-voltage selector, a level shifter with a two-to-four decoder function, and a linearity-enhancing DAC-embedded operational amplifier are included in the design to minimize the overall chip area. The die dimensions of the 1026-channel column driver IC are only 18.14 mm × 1.2 mm. The prototype achieves a maximum settling time of 5.6 μs for driving a load with 5-ΚΩ resistance and 300-pF capacitance within 10-mV tolerance of the final voltage.

Original languageEnglish
Title of host publication2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages17-20
Number of pages4
ISBN (Electronic)9781538664124
DOIs
StatePublished - 14 Dec 2018
Event2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Tainan, Taiwan
Duration: 5 Nov 20187 Nov 2018

Publication series

Name2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings

Conference

Conference2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018
CountryTaiwan
CityTainan
Period5/11/187/11/18

Keywords

  • and DAC-embedded op-amp
  • DAC
  • LCD column driver
  • TFT-LCD
  • ultra-HD

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