DATA BUS POWER DOWN FOR LOW POWER LCD SOURCE DRIVER
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United States of America Patent
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N/A
Issued Date -
Jan 3, 2008
app pub date -
Jun 30, 2006
filing date -
Jun 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention provides solutions to solve the power consumption of the image data buses of an LCD source driver. With a bus buffer provided in one embodiment of the invention, a first image data buses are divided into several groups. Each group of image data buses is dispatched by the bus buffer. It is possible in one embodiment of the invention that some groups are active when the others are passive. Therefore, unnecessary power consumption is cut off. Despite the power saved by the management of the bus buffer, the parasitic capacitance of each group of image data buses is much smaller than that of the image data buses in the prior art. Moreover, the management of the bus buffer can depend upon the layout patterns or the layout locations of circuit components so that the driving strength of the bus buffer may be modified according to the layout pattern or the layout locations.
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