scholarly journals Rail-to-Rail Buffer Amplifier with Adaptive Biasing for Flat Panel Displays

2021 ◽  
Author(s):  
Ugur Cini ◽  
Keyword(s):  
Flat Panel Displays ◽  
Flat Panel ◽  
Rail To Rail ◽  
Adaptive Biasing ◽  
Buffer Amplifier

HIGH-SLEW RATE LOW-QUIESCENT CURRENT RAIL-TO-RAIL CMOS BUFFER AMPLIFIER FOR FLAT PANEL DISPLAYS

2011 ◽  
Vol 20 (07) ◽  
pp. 1277-1286 ◽  
Author(s):  
MERIH YILDIZ ◽  
SHAHRAM MINAEI ◽  
EMRE ARSLAN
Keyword(s):  
Power Supply ◽  
Monte Carlo Analysis ◽  
Cmos Process ◽  
Flat Panel Displays ◽  
Slew Rate ◽  
Flat Panel ◽  
Output Stage ◽  
Rail To Rail ◽  
Buffer Amplifier ◽  
Quiescent Current

This work presents a high-slew rate rail-to-rail buffer amplifier, which can be used for flat panel displays. The proposed buffer amplifier is composed of two transconductance amplifiers, two current comparators and a push-pull output stage. Phase compensation technique is also used to improve the phase margin value of the proposed buffer amplifier for different load capacitances. Post-layout simulations of the proposed buffer amplifier are performed using 0.35 μm AMS CMOS process parameters and 3.3 V power supply. The circuit is tested under a 600 pF capacitive load. An average settling time of 0.85 μs under a full voltage swing is obtained, while only 3 μA quiescent current is drawn from the power supply. Monte Carlo analysis is also added to show the process variation effects on the circuit.

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

Electronics ◽  
2021 ◽  
Vol 10 (18) ◽  
pp. 2309
Author(s):  
Hyoung-Rae Kim ◽  
Chang-Ho An ◽  
Bai-Sun Kong
Keyword(s):  
High Speed ◽  
Low Voltage ◽  
Cmos Process ◽  
Flat Panel Displays ◽  
High Definition ◽  
Flat Panel ◽  
Medium Voltage ◽  
Adaptive Biasing ◽  
Buffer Amplifier ◽  
Fast Settling

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).

scholarly journals High-Speed Rail-to-Rail Class-AB Buffer Amplifier with Compact, Adaptive Biasing for FPD Applications

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2018
Author(s):  
Chang-Ho An ◽  
Bai-Sun Kong
Keyword(s):  
Low Power ◽  
Current Source ◽  
Settling Time ◽  
Output Buffer ◽  
Slew Rate ◽  
Class Ab ◽  
Tail Current ◽  
Rail To Rail ◽  
Adaptive Biasing ◽  
Buffer Amplifier

A high-slew-rate, low-power, CMOS, rail-to-rail buffer amplifier for large flat-panel-display (FPD) applications is proposed. The major circuit of the output buffer is a rail-to-rail, folded-cascode, class-AB amplifier which can control the tail current source using a compact, novel, adaptive biasing scheme. The proposed output buffer amplifier enhances the slew rate throughout the entire rail-to-rail input signal range. To obtain a high slew rate and low power consumption without increasing the static current, the tail current source of the adaptive biasing generates extra current during the transition time of the output buffer amplifier. A column driver IC incorporating the proposed buffer amplifier was fabricated in a 1.6-μm 18-V CMOS technology, whose evaluation results indicated that the static current was reduced by up to 39.2% when providing an identical settling time. The proposed amplifier also achieved up to 49.1% (90% falling) and 19.9 % (99.9% falling) improvements in terms of settling time for almost the same static current drawn and active area occupied.

Evaluating Alternate Visualization Methods for Microsurgery: 2D and 3D Optical Microscopes and Flat-Panel Displays

2012 ◽  
Author(s):  
Michael Sackllah ◽  
Denny Yu ◽  
Charles Woolley ◽  
Steven Kasten ◽  
Thomas J. Armstrong
Keyword(s):  
Flat Panel Displays ◽  
Flat Panel ◽  
2D And 3D

Two mask step polysilicon TFT technology for flat panel displays

1988 ◽  
Vol 24 (3) ◽  
pp. 156 ◽  
Author(s):  
B. Loisel ◽  
L. Haji ◽  
P. Sangouard ◽  
M. Sarret
Keyword(s):  
Flat Panel Displays ◽  
Flat Panel ◽  
Polysilicon Tft

Efficient organic manganese (II) bromide green-light-emitting diodes enabled by manipulating hole and electron transport layer

2021 ◽  
Author(s):  
Hyunsik Im ◽  
Atanu Jana ◽  
Vijaya Gopalan Sree ◽  
QIANKAI BA ◽  
Seong Chan Cho ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Green Light ◽  
Transport Layer ◽  
Lead Free ◽  
Electron Transport Layer ◽  
Flat Panel Displays ◽  
Flat Panel ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices

Lead-free, non-toxic transition metal-based phosphorescent organic–inorganic hybrid (OIH) compounds are promising for next-generation flat-panel displays and solid-state light-emitting devices. In the present study, we fabricate highly efficient phosphorescent green-light-emitting diodes...

scholarly journals Development of IGZO TFTs and their applications to next‐generation flat‐panel displays

2010 ◽  
Vol 11 (4) ◽  
pp. 160-164 ◽  
Author(s):  
Hsing‐Hung Hsieh ◽  
Hsiung‐Hsing Lu ◽  
Hung‐Che Ting ◽  
Ching‐Sang Chuang ◽  
Chia‐Yu Chen ◽  
...  
Keyword(s):  
Flat Panel Displays ◽  
Next Generation ◽  
Flat Panel

Ultra barrier flexible substrates for flat panel displays

Displays ◽  
2001 ◽  
Vol 22 (2) ◽  
pp. 65-69 ◽  
Author(s):  
P.E Burrows ◽  
G.L Graff ◽  
M.E Gross ◽  
P.M Martin ◽  
M.K Shi ◽  
...  
Keyword(s):  
Flexible Substrates ◽  
Flat Panel Displays ◽  
Flat Panel

Dry etching for the fabrication of flat panel displays

1995 ◽  
Author(s):  
Curt Barratt ◽  
David J. Johnson ◽  
Chris Constantine
Keyword(s):  
Dry Etching ◽  
Flat Panel Displays ◽  
Flat Panel
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