发明授权
US06421033B1 Current-driven emissive display addressing and fabrication scheme 失效
电流驱动的发射显示器寻址和制造方案

Current-driven emissive display addressing and fabrication scheme
摘要:
An addressing scheme for use with current-driven emissive displays requires that an N-row by M-column array of pixels be divided into K segments of N/K rows each. One transistor-controlled current driver is provided for each column of pixels within a segment, and all of a segment's current drivers are connected to a respective gate address line. The array is addressed by dividing a frame time into N/K “sub-frame” times. During the first sub-frame time, the current drivers of each segment are turned on in sequence, and the first row of each segment addressed. The remaining rows are addressed in this manner during subsequent sub-frame times. The segmenting and addressing scheme reduces the duty ratio required to drive the array by a factor of K, and reduces the number of transistors required to drive the array by a factor of N/K, when compared with comparably-sized passive matrix and active matrix displays, respectively. Fabrication of the display, and other non-passive matrix displays, is simplified by placing all active components on the back side of the display panel, or on a separate printed-circuit board (PCB) which is interconnected with the pixel array via respective surface bonding pads to form a display. Fabrication is further simplified by combining the current drivers and other drive electronics into application-specific integrated circuits (ASICs).
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