Display device using movement of particles
AssigneeKoninklijke Philips Electronics N.V.
InventorsSander Jurgen Roosendaal, Martinus Hermanus Wilhelmus Maria Van Delden, Mark Thomas Johnson, Alwin Rogier Martijn Verschueren
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Abstract
A method of driving a display device uses a first display addressing mode, in which the display is addressed sequentially in rows, and wherein a first image is displayed with a first contrast ratio between the lightest and darkest pixels, and with a brightest pixel output state, a darkest pixel output state and a plurality of intermediate grey level output states. In a second mode, the display is addressed sequentially in rows, and a second image is displayed with a second contrast ratio between the lightest and darkest pixels which is greater than the first contrast ratio.
Claims26
A method of driving a display device comprising an array of rows and columns of display pixels, each pixel comprising particles (6) which are moved to control the display state of the pixel, the method comprising, in a first mode, addressing the display sequentially in rows, and wherein a first image is displayed with a first contrast ratio between the lightest and darkest pixels possible in the first mode, and with a brightest pixel output state, a darkest pixel output state and a plurality of intermediate grey level output states;
- and, in a second mode, addressing the display sequentially in rows, and wherein a second image is displayed with a second contrast ratio between the lightest and darkest pixels possible in the second mode, which is greater than the first contrast ratio.
Dependencies are inferred from the claim text.