Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

An Area and Power Efficient Interpolation Scheme Using Variable Current Control for 10-Bit Data Drivers in Mobile Active-Matrix LCDs

Authors
Lee, Hyung-MinJeon, Yong-JoonLee, Sung-WooLee, ByunghunCho, Gyu-Hyeong
Issue Date
5월-2019
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Buffer amplifier; data driver; digital-to-analog converter (DAC); interpolation; LCD; piecewise linear; variable current control (VCC)
Citation
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, v.65, no.2, pp.253 - 262
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
Volume
65
Number
2
Start Page
253
End Page
262
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/65918
DOI
10.1109/TCE.2019.2900512
ISSN
0098-3063
Abstract
This paper presents an area and power efficient interpolation scheme using variable current control (VCC) for 10-bit data drivers in mobile active-matrix LCDs. The VCC interpolation can be embedded in buffer amplifiers as sub-digital-to-analog converters (DACs), reducing the DAC area without requiring additional power and conversion time. Moreover, interpolation errors due to transistor nonlinearity can be compensated through delicate current ratio control, optimizing both accuracy and area efficiency of the high-resolution data driver. The prototype 10-bit data driver with a 6-bit resistor DAC and a 4-bit interpolation sub-DAC occupies the chip area of 460 mu m x 14 mu m per channel, which is 10.7% smaller than the conventional 8bit data driver. The data driver consumes static current of 1 mu A/channel without dissipating additional power for interpolation. The measured integral nonlinearity and differential nonlinearity are 0.4 LSB and 0.7 LSB, respectively. The proposed scheme has competitive performance in terms of driving accuracy, chip size shrinkage, and static power consumption for high-resolution data drivers.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > School of Electrical Engineering > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Lee, Hyung Min photo

Lee, Hyung Min
공과대학 (전기전자공학부)
Read more

Altmetrics

Total Views & Downloads

BROWSE