Field updated deformable mirror device
First Claim
Patent Images
1. The method of field addressing an array of electromechanical pixels wherein each of said pixels assume one of two or more selected stable states according to a set of selective address voltages, said method comprising the steps of:
- electromechanically latching, by applying a bias voltage to said array of pixels, each of said pixels in one of said selected stable states wherein each of said pixels is trapped in a potential energy well;
applying a new set of selective address voltages to all said pixels in said array;
electromechanically unlatching, by removing said bias voltage from said array, said pixels from their previously addressed state;
allowing said array of pixels to assume a new state in accordance with the new set of selective address voltages; and
electromechanically latching, by reestablishing said bias voltage, each of said pixels.
0 Assignments
0 Petitions
Accused Products
Abstract
The bistable deformable mirror device (DMD) used in a high-definition television (HDTV) application must be capable of supporting at least 128 grey levels, using pulse-width modulation. If the DMD is line-updated, then the minimum field time to support 128 grey levels cannot be achieved because of the time required to perform a resonant reset once each line. This disclosure shows how the DMD can be field-updated in order to achieve the minimum required field time.
-
Citations
8 Claims
-
1. The method of field addressing an array of electromechanical pixels wherein each of said pixels assume one of two or more selected stable states according to a set of selective address voltages, said method comprising the steps of:
-
electromechanically latching, by applying a bias voltage to said array of pixels, each of said pixels in one of said selected stable states wherein each of said pixels is trapped in a potential energy well; applying a new set of selective address voltages to all said pixels in said array; electromechanically unlatching, by removing said bias voltage from said array, said pixels from their previously addressed state; allowing said array of pixels to assume a new state in accordance with the new set of selective address voltages; and electromechanically latching, by reestablishing said bias voltage, each of said pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification