Premium
27.1: An Area‐Effective Source Driver with 12‐Bit Linear DAC for Large‐Size TFT‐LCDs
Author(s) -
Yang IkSeok,
Kang JinSeong,
Kwon OhKyong,
Beak JongHak,
Jung JiWoon,
Choi YoonKyung,
Lee Myunghee
Publication year - 2009
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3256789
Subject(s) - digital to analog converter , 12 bit , resistor , least significant bit , amplifier , voltage , 8 bit , bit (key) , differential nonlinearity , integral nonlinearity , low voltage , computer science , electrical engineering , electronic engineering , cmos , computer hardware , engineering , converters , computer security , operating system
Abstract An area‐effective 12‐bit linear digital‐to‐analog converter (DAC) of source driver is proposed for large‐Size TFT‐LCDs. The proposed DAC is composed of resistor‐string DAC for MSB 6‐bit, current DAC for LSB 6‐bit and interpolation amplifiers. To reduce the area of DAC, 6‐bit current DAC is designed using low voltage devices. We designed and fabricated the source driver with the proposed DAC using 0.13 μm process with 2.5 V low voltage devices and 16 V high voltage devices. One channel layout area is 17.5 μm × 600 μm, which is shrunk by 15% compared with that of 8‐bit resistor‐string DAC. The experimental results show that the output voltage deviation is less than 3.5 mV.