A 10-bit CMOS DAC with current interpolated gamma correction for LCD source drivers

Pang Jung Liu; Yi Jan Emery Chen

doi:10.1109/TCSVT.2012.2186742

A 10-bit CMOS DAC with current interpolated gamma correction for LCD source drivers

Pang Jung Liu
, Yi Jan Emery Chen

Department of Electrical Engineering

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

24 Scopus citations

Abstract

This paper presents a compact 10-bit digital-to-analog converter (DAC) for LCD source drivers. The cyclic DAC architecture is used to reduce the area of LCD column drivers when compared to the use of conventional resistor-string DACs. The current interpolation technique is proposed to perform gamma correction after D/A conversion. The gamma correction circuit is shared by four DAC channels using the interleave technique. A prototype 10-bit DAC with gamma correction function is implemented in 0.35 μm CMOS technology and its average die size per channel is 0.053 mm ², which is smaller than those of the R-DACs with gamma correction function. The settling time of the 10-bit DAC is 1 μs, and the maximum INL and DNL are 2.13 least significant bit (LSB) and 1.30 LSB, respectively.

Original language	English
Article number	6148267
Pages (from-to)	958-965
Number of pages	8
Journal	IEEE Transactions on Circuits and Systems for Video Technology
Volume	22
Issue number	6
DOIs	https://doi.org/10.1109/TCSVT.2012.2186742
State	Published - 2012

Bibliographical note

Funding Information:
Manuscript received May 30, 2011; revised August 15, 2011 and October 22, 2011; accepted November 22, 2011. Date of publication February 7, 2012; date of current version May 31, 2012. This work was supported in part by the National Science Council, Taiwan, under Grants NSC 100-2221-E-002-092-MY3, 100-2221-E-002-094-MY3, 99-2120-M-002-013, and 99-2218-E-197-002, and by the NTU Excellent Research Project, under Grant 98R0062-03. This paper was recommended by Associate Editor S. Takamura.

Keywords

Current interpolation
LCD driver
digital-to-analog converter (DAC)
gamma correction

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10.1109/TCSVT.2012.2186742

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abstract = "This paper presents a compact 10-bit digital-to-analog converter (DAC) for LCD source drivers. The cyclic DAC architecture is used to reduce the area of LCD column drivers when compared to the use of conventional resistor-string DACs. The current interpolation technique is proposed to perform gamma correction after D/A conversion. The gamma correction circuit is shared by four DAC channels using the interleave technique. A prototype 10-bit DAC with gamma correction function is implemented in 0.35 μm CMOS technology and its average die size per channel is 0.053 mm 2, which is smaller than those of the R-DACs with gamma correction function. The settling time of the 10-bit DAC is 1 μs, and the maximum INL and DNL are 2.13 least significant bit (LSB) and 1.30 LSB, respectively.",

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AB - This paper presents a compact 10-bit digital-to-analog converter (DAC) for LCD source drivers. The cyclic DAC architecture is used to reduce the area of LCD column drivers when compared to the use of conventional resistor-string DACs. The current interpolation technique is proposed to perform gamma correction after D/A conversion. The gamma correction circuit is shared by four DAC channels using the interleave technique. A prototype 10-bit DAC with gamma correction function is implemented in 0.35 μm CMOS technology and its average die size per channel is 0.053 mm 2, which is smaller than those of the R-DACs with gamma correction function. The settling time of the 10-bit DAC is 1 μs, and the maximum INL and DNL are 2.13 least significant bit (LSB) and 1.30 LSB, respectively.

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A 10-bit CMOS DAC with current interpolated gamma correction for LCD source drivers

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Bibliographical note

Keywords

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