Abstract
This paper proposes an area-efficient fully resistor-string digital-to-analog-converter (R-DAC)-based thin-film transistor liquid crystal display (TFT-LCD) column driver in which DACs supply only negative-polarity voltages, while polarity inverters generate positive-polarity voltages from negative-polarity voltages. An offset cancellation technique is employed in negative-polarity buffers and polarity inverters. An experimental prototype 8-bit column driver was implemented using 0.35-μm CMOS technology to verify the proposed driving scheme. The settling time is within 5 μs, and the maximum deviation is 0.68 LSB. The average area per channel is 0.04 mm 2. Compared with a conventional fully R-DAC-based TFT-LCD column driver, the proposed driving scheme has a DAC area saving of 41%.
Original language | English |
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Article number | 5456218 |
Pages (from-to) | 2588-2601 |
Number of pages | 14 |
Journal | IEEE Transactions on Circuits and Systems I: Regular Papers |
Volume | 57 |
Issue number | 10 |
DOIs | |
State | Published - 2010 |
Keywords
- Digitalanalog conversion
- driver circuits
- LCD driver
- liquid crystal display (LCD)
- offset cancellation