The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1995
Filed:
Nov. 05, 1993
Richard O Gale, Jr, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A preferred embodiment of the present invention provides a method of addressing a digital micromirror device (DMD) having an array of electromechanical pixels (20) comprising deflectable beams (30) wherein each of the pixels (20) assume one of two or more selected stable states according to a set of selective address voltages. A first step of the preferred method is electromechanically latching, by applying a bias voltage with an AC and a DC component to the array of pixels (20), each of the pixels (20) in one of the selected stable states. A second step is applying a new set of selective address voltages to all the pixels (20) in the array. A third step is electromechanically unlatching, by removing the bias voltage from the array, the pixels (20) from their previously addressed state. A fourth step is allowing the array of pixels (20) to assume a new state in accordance with the new set of selective address voltages. A fifth step is electromechanically latching, by reestablishing the bias voltage with the AC component and the DC component, each of the pixels (20 ). Other devices, systems and methods are also disclosed.