10-bit source driver with resistor-resistor-string digital-to-analog converter

— A 10‐bit gray‐scale source driver using a resistor‐resistor‐string digital‐to‐analog converter (RR‐DAC) is proposed for a TFT‐LCD source driver. The 10‐bit RR‐DAC consists of an 8‐bit resistor‐string DAC and a two‐bit resistor‐string DAC without an intermediate unity‐gain buffer to isolate the par...

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Bibliographic Details
Published in:Journal of the Society for Information Display 2006-04, Vol.14 (4), p.371-377
Main Authors: Sung, Yoo-Chang, Kwon, Oh-Kyong, Kim, Jong-Kee
Format: Article
Language:English
Subjects:
10 bit
DAC
source driver
TFT-LCD
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Description
Summary:— A 10‐bit gray‐scale source driver using a resistor‐resistor‐string digital‐to‐analog converter (RR‐DAC) is proposed for a TFT‐LCD source driver. The 10‐bit RR‐DAC consists of an 8‐bit resistor‐string DAC and a two‐bit resistor‐string DAC without an intermediate unity‐gain buffer to isolate the parallel‐connected resistor string. The output deviation of the proposed source driver is less than ±3 mV. The chip area of the proposed 10‐bit source driver with an RR‐DAC is increased to 29% of that of an 8‐bit source driver.
ISSN:1071-0922
1938-3657
DOI:10.1889/1.2196513