METHODS FOR DRIVING BISTABLE ELECTRO-OPTIC DISPLAYS, AND APPARATUS FOR USE THEREIN
First Claim
1. A method of driving a bistable electro-optic display having at least one pixel with two extreme optical states, the method comprising:
- (a) driving the pixel from an initial gray level to one extreme optical state different from the initial gray level; and
(b) driving the pixel from the one extreme optical state to a final gray level different from the one extreme optical state.
1 Assignment
0 Petitions
Accused Products
Abstract
A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
202 Citations
15 Claims
-
1. A method of driving a bistable electro-optic display having at least one pixel with two extreme optical states, the method comprising:
-
(a) driving the pixel from an initial gray level to one extreme optical state different from the initial gray level; and (b) driving the pixel from the one extreme optical state to a final gray level different from the one extreme optical state. - View Dependent Claims (2, 3, 4, 6, 7)
-
-
8. A bistable electro-optic display having at least one pixel with two extreme optical states, and a display controller for applying electric field to the pixel and thereby changing the optical state thereof from an initial gray level to a final gray level, the display controller being arranged to:
-
(a) drive the pixel from the initial gray level to one extreme optical state different from the initial gray level; and (b) drive the pixel from the one extreme optical state to a final gray level different from the one extreme optical state. - View Dependent Claims (5, 9, 10, 11, 12, 13, 14)
-
-
15. A driver circuit comprising:
-
output lines arranged to be connected to drive electrodes of an electro-optic display; first input means for receiving a plurality of (n+1) bit numbers representing the voltage and polarity of signals to be placed on the drive electrodes; and second input means for receiving a clock signal, the driver circuit being arranged such that, upon receipt of the clock signal, the driver circuit displays the selected voltages on its output lines.
-
Specification