Accurate quadruple-gamma-curve correction for line inversion-based mobile TFT-LCD driver ICS

Jae W. Woo; Jae G. Lee; Young H. Jun; Bai S. Kong

doi:10.1109/TCE.2013.6626223

Accurate quadruple-gamma-curve correction for line inversion-based mobile TFT-LCD driver ICS

Jae W. Woo
, Jae G. Lee
, Young H. Jun
, Bai S. Kong

Department of Semiconductor Systems Engineering

Sungkyunkwan University
Samsung

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A line inversion-based gamma-curve correction scheme is presented for use in mobile TFT-LCD driver ICs. Novel voltage-symmetric gray curve synthesis (VSGS) method using a polarity-inverting gray voltage generator and variable resistor-tap biasing (VRTB) scheme using multioutput drivers have been adopted for accurately correcting gray curves for quadruple gamma values of y ^1.0, y^1.8, y^2.2, and y^2.5. A test chip fabricated in a 6 V/0.7-μm triple-well CMOS process indicated that a gray voltage error was less than +8 mV, a gray-to-gray error-voltage difference was under +3 mV, and a pin-to-pin variation of each source driver output was +5 mV.

Original language	English
Pages (from-to)	443-451
Number of pages	9
Journal	IEEE Transactions on Consumer Electronics
Volume	59
Issue number	3
DOIs	https://doi.org/10.1109/TCE.2013.6626223
State	Published - 2013

Keywords

gammacurvecorrection
Line inversion
multi-output driver
TFT-LCD
voltage symmetry

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10.1109/TCE.2013.6626223

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title = "Accurate quadruple-gamma-curve correction for line inversion-based mobile TFT-LCD driver ICS",

abstract = "A line inversion-based gamma-curve correction scheme is presented for use in mobile TFT-LCD driver ICs. Novel voltage-symmetric gray curve synthesis (VSGS) method using a polarity-inverting gray voltage generator and variable resistor-tap biasing (VRTB) scheme using multioutput drivers have been adopted for accurately correcting gray curves for quadruple gamma values of y 1.0, y1.8, y2.2, and y2.5. A test chip fabricated in a 6 V/0.7-μm triple-well CMOS process indicated that a gray voltage error was less than +8 mV, a gray-to-gray error-voltage difference was under +3 mV, and a pin-to-pin variation of each source driver output was +5 mV.",

keywords = "gammacurvecorrection, Line inversion, multi-output driver, TFT-LCD, voltage symmetry",

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language = "English",

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T1 - Accurate quadruple-gamma-curve correction for line inversion-based mobile TFT-LCD driver ICS

AU - Woo, Jae W.

AU - Lee, Jae G.

AU - Jun, Young H.

AU - Kong, Bai S.

PY - 2013

Y1 - 2013

N2 - A line inversion-based gamma-curve correction scheme is presented for use in mobile TFT-LCD driver ICs. Novel voltage-symmetric gray curve synthesis (VSGS) method using a polarity-inverting gray voltage generator and variable resistor-tap biasing (VRTB) scheme using multioutput drivers have been adopted for accurately correcting gray curves for quadruple gamma values of y 1.0, y1.8, y2.2, and y2.5. A test chip fabricated in a 6 V/0.7-μm triple-well CMOS process indicated that a gray voltage error was less than +8 mV, a gray-to-gray error-voltage difference was under +3 mV, and a pin-to-pin variation of each source driver output was +5 mV.

AB - A line inversion-based gamma-curve correction scheme is presented for use in mobile TFT-LCD driver ICs. Novel voltage-symmetric gray curve synthesis (VSGS) method using a polarity-inverting gray voltage generator and variable resistor-tap biasing (VRTB) scheme using multioutput drivers have been adopted for accurately correcting gray curves for quadruple gamma values of y 1.0, y1.8, y2.2, and y2.5. A test chip fabricated in a 6 V/0.7-μm triple-well CMOS process indicated that a gray voltage error was less than +8 mV, a gray-to-gray error-voltage difference was under +3 mV, and a pin-to-pin variation of each source driver output was +5 mV.

KW - gammacurvecorrection

KW - Line inversion

KW - multi-output driver

KW - TFT-LCD

KW - voltage symmetry

UR - https://www.scopus.com/pages/publications/84886416725

U2 - 10.1109/TCE.2013.6626223

DO - 10.1109/TCE.2013.6626223

M3 - Article

AN - SCOPUS:84886416725

SN - 0098-3063

VL - 59

SP - 443

EP - 451

JO - IEEE Transactions on Consumer Electronics

JF - IEEE Transactions on Consumer Electronics

IS - 3

ER -

Accurate quadruple-gamma-curve correction for line inversion-based mobile TFT-LCD driver ICS

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Keywords

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