Abstract
This chapter presents transmittance scaling; a technique aimed at conserving power in a transmissive TFT-LCD with a cold cathode fluorescent lamp (CCFL) backlight by reducing the backlight illumination while compensating for the luminance loss. This goal is accomplished by adjusting the transmittance function of the TFT-LCD panel while meeting an upper bound on a contrast distortion metric. Experimental results show that an average of 3.7X power saving can be achieved for still images with a mere 10% contrast distortion.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
T. Simunic et al., “Event-driven power management,” IEEE Tran. Computer-Aided Design of Integrated Circuits and Systems, vol. 20, pp. 840–857, July 2001.
I. Choi, H. Shim, and N. Chang, “Low-power color TFT LCD display for hand-held embedded systems,” Proc. of Symp. on Low Power Electronics and Design, Aug. 2002, pp. 112–117.
ANSI/IES. 1986. Nomenclature and Definitions for Illuminating Engineering, ANSI/IES RP-16-1986. New York, NY: Illuminating Engineering Society of North America.
Radiosity: A Programmer’s Perspective by Ian Ashdown, © October 2002 by Heart Consultants Limited. (Originally published by John Wiley & Sons in 1994.)
W. K. Pratt, Digital Image Processing, Wiley Interscience, 1991.
Maxim, MAX1610 Digitally Controlled CCFL Backlight Power Supply.
J. Williams, “A fourth generation of LCD backlight technology,” Linear Technology Application Note 65, Nov. 1995.
LG Philips, LP064V1 Liquid Crystal Display.
Stanley Electric Co., Ltd., [CFL] cold cathode fluorescent lamps, 2003.
Minolta, Minolta Precision Luminance Meter LS-100.
Analog Devices, AD8511 11-Channel, Muxed Input LCD Reference Drivers.
Hitachi, HD66753 168x132-dot Graphics LCD Controller/Driver with Bit-operation Functions, 2003.
H. Aoki, “Dynamic characterization of a-Si TFT-LCD pixels,” HP Labs 1996 Technical Reports (HPL-96-19), February 21, 1996.
S. Daly, “The visible differences predictor: an algorithm for the assessment of image fidelity,” Digital Images and Human Vision, pp. 179–206, Cambridge: MIT Press, 1993.
E. Peli, “Contrast in complex images,” J. Opt. Soc. Amer. A, vol. 10,no. 10, pp. 2032–2040, Oct. 1990.
A. G. Weber, “The USC-SIPI image database version 5,” USC-SIPI Report #315, Oct. 1997. Also http://sipi.usc.edu/services/database/Database.html.
Toshihisa Tsukada, TFT/LCD, Liquid-Crystal Displays Addressed by Tin-Film Transistors, Amsterdam: Gordon and Breach Publishers, 1996.
W. C. O’Mara, Liquid crystal flat panel displays: manufacturing science & technology, New York: Van Nostrand Reinhold, 1993.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2004 Springer Science + Business Media, Inc.
About this chapter
Cite this chapter
Cheng, WC., Pedram, M. (2004). Transmittance Scaling for Reducing Power Dissipation of a Backlit TFT-LCD. In: Macii, E. (eds) Ultra Low-Power Electronics and Design. Springer, Boston, MA. https://doi.org/10.1007/1-4020-8076-X_10
Download citation
DOI: https://doi.org/10.1007/1-4020-8076-X_10
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4020-8075-3
Online ISBN: 978-1-4020-8076-0
eBook Packages: Springer Book Archive