High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays
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 re...
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doaj-8f94af516b504d5abe544af67c7a099b2021-09-26T00:03:46ZengMDPI AGElectronics2079-92922021-09-01102309230910.3390/electronics10182309High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel DisplaysHyoung-Rae Kim0Chang-Ho An1Bai-Sun Kong2Department of Electrical and Computer Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, KoreaDepartment of Smart Electronics and Communications, Daelim University College, 29 Imgok-ro, Dongan-gu, Anyang 13916, Gyeonggi-do, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, KoreaA 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 μm<sup>2</sup> to 4402 μm<sup>2</sup> (21.1% reduction).https://www.mdpi.com/2079-9292/10/18/2309high-slew-ratehigh-speedsettling timelow-powerbuffer amplifieradaptive biasing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hyoung-Rae Kim Chang-Ho An Bai-Sun Kong |
spellingShingle |
Hyoung-Rae Kim Chang-Ho An Bai-Sun Kong High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays Electronics high-slew-rate high-speed settling time low-power buffer amplifier adaptive biasing |
author_facet |
Hyoung-Rae Kim Chang-Ho An Bai-Sun Kong |
author_sort |
Hyoung-Rae Kim |
title |
High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays |
title_short |
High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays |
title_full |
High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays |
title_fullStr |
High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays |
title_full_unstemmed |
High-Speed Column Driver IC Having Buffer Amplifier with Embedded Isolation Switch and Compact Adaptive Biasing for Flat-Panel Displays |
title_sort |
high-speed column driver ic having buffer amplifier with embedded isolation switch and compact adaptive biasing for flat-panel displays |
publisher |
MDPI AG |
series |
Electronics |
issn |
2079-9292 |
publishDate |
2021-09-01 |
description |
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 μm<sup>2</sup> to 4402 μm<sup>2</sup> (21.1% reduction). |
topic |
high-slew-rate high-speed settling time low-power buffer amplifier adaptive biasing |
url |
https://www.mdpi.com/2079-9292/10/18/2309 |
work_keys_str_mv |
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