Abstract
Dynamic LED backlight technology, not only can increase the dynamic range and enhance the contrast of the LCD display, but also can largely reduce the power consumption. However, for large-scale monitor, to achieve a better display, the number of the LED units will be very large. And if we control the LED unit point by point, the drive circuit will be complicated. In this paper, a ranks-decomposition control method is proposed, which decomposes the LED brightness matrix to row and column control signals, driving the LED unit point by point. This method archives adaptive dimming effects, such as high contrast ratio and reduced power consumption, even with much less LED drivers. This paper also contains a Sub-Matrix Summation optimization algorithm implements the matrix decomposition and optimizes it.
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© 2012 Springer-Verlag Berlin Heidelberg
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Chu, P., Li, Y., Jiang, H., Zhao, K., Du, S. (2012). Sub-matrix Summation Method for Adaptive Dimming LED Backlight. In: Jin, D., Lin, S. (eds) Advances in Electronic Engineering, Communication and Management Vol.1. Lecture Notes in Electrical Engineering, vol 139. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27287-5_35
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DOI: https://doi.org/10.1007/978-3-642-27287-5_35
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Online ISBN: 978-3-642-27287-5
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