Patent ID: 7499208
Filing Date: 2009-03-03
Classification: G09G

Abstract:
1. A device for modulating light, comprising: at least one light modulator comprising a movable optical element positionable in two or more positions, said modulator operating interferometrically to exhibit a different predetermined optical response in each of the two or more positions; and control circuitry connected to said light modulator for controlling said interferometric modulator, wherein the control circuitry provides a substantially constant current to said light modulator to control said movable optical element, wherein said control circuitry is controllably switchable between a first configuration that provides no current to said at least one light modulator and a second configuration that provides current to the at least one light modulator, and wherein said control circuitry is configured to provide current to said movable optical element when switched from the first configuration to the second configuration, wherein the first circuit configuration comprises a plurality of electrical devices connected electrically in a parallel configuration with each other, each of the electrical devices configured to store an electric charge, wherein the second configuration comprises the plurality of electrical devices configured such that they are connected electrically in a series configuration with each other, and such tat the series configuration is connected to said at least one light modulator, and wherein said control circuitry is configured to switch between the first configuration and the second configuration by connecting electrically each of the plurality of electrical devices in a series configuration with said light modulator over a predetermined time period.