Importance

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Abstract

Techniques are disclosed for controlling an active matrix display using adaptive charge sharing. Separate voltages applied to each column control line correspond to the image data for setting the grayscale level of the respective pixels. Image data for one row of pixels are compared to the image data for another row of pixels on a column-by-column basis. If the image data for one or more columns changes from one row to the next by more than a threshold amount, charge sharing is activated between updating different rows for controlling the corresponding column control lines of the display. Charge sharing may be implemented by adding one or more capacitors that are switched with a block of column control lines, and a processor configured to compare the image data for successive rows, determine whether the criteria for charge sharing are met, and control the switches based on the determination.

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First Claim