Patent ID: 7932875
Filing Date: 2011-04-26
Classification: G02F,G09G,G11C

Abstract:
1. A microdisplay device fabricated on a common semiconductor substrate to display externally provided image data to a user, comprising: an array of active pixels arranged in rows and columns, the array of active pixels can be electronically controlled to operate in a plurality of light-modulating states, wherein a first light-modulating state reflects incoming light such that it is substantially blocked from reaching the user and a second light-modulating state reflects the incoming light such that it is substantially passed to the user; an array of memory cells arranged in rows and columns; sense amplifiers operable to read the memory cells; a line-buffer that temporarily stores input data for the memory cells; row control logic that selectively activates rows of the pixel array and rows of the memory cells; a column data processor that receives output data from the sense amplifiers, the column data processor operable to compare the sense amplifier output data to a reference signal to control the light-modulating states of the active pixels; a control unit coupled to the sense amplifiers, the line-buffer and the row control logic, the control unit operable to receive the image data; and a counter circuit that generates the reference signal for the column data processor.