ELECTROPHORETIC DISPLAY DEVICES
First Claim
1. A method of driving a passive matrix electrophoretic display device that includes an array of rows and columns of display pixels, the method comprising:
- carrying out a first display addressing cycle, wherein the display is addressed as a first set of row groups (52), the same column data set being applied to each row of the row group simultaneously, wherein the number of row groups (52) is less than the number of rows (50), such that at least one row group comprises a plurality of rows; and
carrying out at least one further display addressing cycle (FIG. 3B), wherein in the final addressing cycle all rows (50) of the display are addressed with independent image data.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrophoretic display device is driven by carrying out a first display addressing cycle (FIG. 3A), in which the display is addressed as a first set of row groups (52), the same column data set being applied to each row of the row group simultaneously. The number of row groups (52) is less than the number of rows (50), such that at least one row group comprises a plurality of rows. At least one further display addressing cycle (FIG. 3B) addresses all rows of the display with independent image data. This method addresses groups of rows together using the same column data, and thereby reduces the addressing time. The image is presented after the first addressing cycle as a low resolution image, in particular with low vertical resolution. The subsequent addressing cycles then progressively improve the image quality to the final desired image.
-
Citations
12 Claims
-
1. A method of driving a passive matrix electrophoretic display device that includes an array of rows and columns of display pixels, the method comprising:
-
carrying out a first display addressing cycle, wherein the display is addressed as a first set of row groups (52), the same column data set being applied to each row of the row group simultaneously, wherein the number of row groups (52) is less than the number of rows (50), such that at least one row group comprises a plurality of rows; and carrying out at least one further display addressing cycle ( FIG. 3B ), wherein in the final addressing cycle all rows (50) of the display are addressed with independent image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An electrophoretic display device (80), comprising an array of rows and columns of display pixels (82), and a controller (88) for controlling the display device, wherein the controller is adapted to carry out a first display addressing cycle, wherein the display is addressed as a first set of row groups, the same column data set being applied to each row of the row group simultaneously, wherein the number of row groups is less than the number of rows, such that at least one row group comprises a plurality of rows;
- and carry out at least one further display addressing cycle, wherein in the final addressing cycle all rows of the display are addressed with independent image data.
-
12. A display controller (88) for an electrophoretic display device, the display controller being adapted to carry out a first display addressing cycle, wherein the display is addressed as a first set of row groups, the same column data set being applied to each row of the row group simultaneously, wherein the number of row groups is less than the number of rows, such that at least one row group comprises a plurality of rows, and carry out at least one further display addressing cycle, wherein in the final addressing cycle all rows of the display are addressed with independent image data.
Specification