Patent ID: 6421033
Filing Date: 2002-07-16
Classification: G09G,H01L

Abstract:
A current-driven emissive display, comprising:an array of current-driven emissive display pixels arranged into N rows and M columns, each of said pixels having a brightness which varies directly with its drive current, said array of pixels sub-divided into K segments, each of said K segments consisting of N/K rows and M columns, each of said M columns having respective column address lines, KÃ—M transistor-controlled current drivers, each of said current drivers connected to a corresponding one of said column address lines, the pixels in each column of each segment connected to a respective one of said current drivers, each of said current drivers connected to drive the N/K pixels found in its respective column segment, each of said segments having a respective gate address line which is connected to each of the current drivers within the segment, each of the current drivers within a segment arranged to provide a current level to its column of pixels which corresponds to the voltage present on the current driver's corresponding column address line when the segment's gate address line is selected, each of said transistor-controlled current drivers comprising: a first transistor, a storage device, and a voltage-controlled current source, said first transistor connected to conduct a voltage to said storage device in response to the selection of the transistor-controlled current driver's gate address line, said storage device storing said voltage, said voltage-controlled current source connected to provide said current level to its N/K pixels in accordance with the voltage stored on said storage device, and a controller arranged to control said gate address lines such that each of the pixels in said array is controlled via said transistor-controlled current drivers.