High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays

Kim, Hyoung-Rae; An, Chang-Ho; Kong, Bai-Sun

doi:10.3390/electronics10182309

Open AccessArticle

High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays

by

Hyoung-Rae Kim

¹,

Chang-Ho An

^2,*

and

Bai-Sun Kong

^1,3,*

¹

Department of Electrical and Computer Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, Korea

²

Department of Smart Electronics and Communications, Daelim University College, 29 Imgok-ro, Dongan-gu, Anyang 13916, Gyeonggi-do, Korea

³

Department of Artificial Intelligence, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, Korea

^*

Authors to whom correspondence should be addressed.

Electronics 2021, 10(18), 2309; https://doi.org/10.3390/electronics10182309

Submission received: 8 August 2021 / Revised: 15 September 2021 / Accepted: 17 September 2021 / Published: 20 September 2021

(This article belongs to the Section Circuit and Signal Processing)

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Abstract

A high-speed column driver IC with an area-efficient high-slew-rate buffer amplifier is proposed for use in a large-sized, high-resolution TFT-LCD panel application. In the proposed architecture, explicit isolation switches have been embedded into the buffer amplifier resulting in a fast settling response. The amplifier also has a structure that adjusts the tail current of the input stage using a very compact adaptive biasing. The proposed column driver IC, having the proposed buffer amplifier for driving a 55-inch 4K ultra-high-definition (UHD) TV panel, was fabricated in a 0.18-μm 1.8-V low-voltage, 1.2-μm 9-V medium-voltage, and 1.6-μm 18-V high-voltage CMOS process. The performance evaluation results indicated that 90% and 99.9% falling settling times were improved from 1.947 µs to 0.710 µs (63.5% improvement) and 4.131 µs to 2.406 µs (41.7% improvement), respectively. They also indicated that the layout size of the proposed buffer amplifier was reduced from 5580 μm² to 4402 μm² (21.1% reduction).

Keywords: high-slew-rate; high-speed; settling time; low-power; buffer amplifier; adaptive biasing; column driver; source driver; flat-panel display (FPD)

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MDPI and ACS Style

Kim, H.-R.; An, C.-H.; Kong, B.-S. High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays. Electronics 2021, 10, 2309. https://doi.org/10.3390/electronics10182309

AMA Style

Kim H-R, An C-H, Kong B-S. High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays. Electronics. 2021; 10(18):2309. https://doi.org/10.3390/electronics10182309

Chicago/Turabian Style

Kim, Hyoung-Rae, Chang-Ho An, and Bai-Sun Kong. 2021. "High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays" Electronics 10, no. 18: 2309. https://doi.org/10.3390/electronics10182309

APA Style

Kim, H.-R., An, C.-H., & Kong, B.-S. (2021). High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays. Electronics, 10(18), 2309. https://doi.org/10.3390/electronics10182309

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays

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