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Small-area DAC using adaptive body bias scheme for AMOLED data driver ICs

Title
Small-area DAC using adaptive body bias scheme for AMOLED data driver ICs
Author
권오경
Keywords
LOW-POWER; BACKLIGHT
Issue Date
2015-08
Publisher
INST ENGINEERING TECHNOLOGY-IET
Citation
ELECTRONICS LETTERS, v. 51, NO 17, Page. 1322-1323
Abstract
A small-area digital-to-analogue converter (DAC) using an adaptive body bias scheme is proposed for active-matrix organic light-emitting diode (AMOLED) data driver ICs. The proposed scheme adjusts the body bias applied to the P-type (PMOS) decoder according to the average picture level (APL) and maintains a low on-resistance of the PMOS decoder at a high APL. This enables reduction of the DAC area by realising the upper-half decoder using only PMOS switches, unlike conventional DACs which use both PMOS and N-type switches. A 20-channel data driver IC is fabricated using a 0.18 pm HVCMOS technology with 1.8 V/18 V devices. The proposed DAC occupies 33% less area than the conventional DAC and the measured differential nonlinearity and integral nonlinearity are +0.09/-0.1 and +0.36/-0.47 LSB, respectively.
URI
http://digital-library.theiet.org/content/journals/10.1049/el.2015.0669http://hdl.handle.net/20.500.11754/26997
ISSN
0013-5194; 1350-911X
DOI
10.1049/el.2015.0669
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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