Title:	Trapezoidal and triangular waveform profiles for reducing power dissipation in liquid crystal displays
Authors:	Govind, M. Ruckmongathan, T.N.
Keywords:	Addressing low-power matrix displays multiplexing scanning
Issue Date:	Jun-2008
Publisher:	IEEE
Citation:	Journal of Display Technology, 2008, Vol.4, p166
Abstract:	We propose to replace the rectangular select pulses in all the conventional addressing techniques with either trapezoidal or triangular select waveforms to reduce the power dissipated in rms responding liquid crystal displays. A realistic analysis that includes the distortion in the addressing waveforms is presented for trapezoidal, triangular profiles, as well as their equivalents in discrete domain viz. the multi-step profiles and the results are compared. Good brightness uniformity among pixels that are driven to same state is achieved as a spinoff of the analysis and application of a correction voltage at the end of the select pulses. Increase in hardware complexity and the cost is minimal because just the voltage level generator circuit is modified to achieve reduction in power dissipation with new waveform profiles.
Description:	Open Access.
URI:	http://hdl.handle.net/2289/3561
ISSN:	P-ISSN: 1551-319X
Alternative Location:	http://dx.doi.org/10.1109/JDT.2008.920173
Copyright:	2008 IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Raman Research Institute's's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
Appears in Collections:	Research Papers (SCM)

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