Supply of a programming current to a pixel

Details Supply of a programming current to a pixel Supply of a programming current to a pixel

2006-03-14

2006-03-14

Tran, Henry N. (Department: 2674)

Computer graphics processing and selective visual display system

Display driving control circuitry

C345S076000, C345S082000, C341S135000, C341S136000, C323S315000, C323S317000

Reexamination Certificate

active

07012597

ABSTRACT:
A data line drive circuit is equipped with a single line driver300and a gate voltage generation circuit400. The single line driver300is constructed such that N groups (where N is an integer 2 or larger) of series connections of drive transistors21to28and switching transistors81to88are connected in parallel. The gate voltage generation circuit400includes two transistors71and72constituting a current mirror circuit, a drive transistor73,and a constant voltage generation transistor31.The range of an output current Ioutcan be controlled by changing any of the design values of the parameters including: relative values Kaand Kbof the gain coefficient for the transistors31and32,the source voltage VDREF of the gate voltage generation circuit400,and the gate signal VRIN of the drive transistor73.

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