Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-02-01
2011-02-01
Abdulselam, Abbas I (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C034S082000
Reexamination Certificate
active
07880691
ABSTRACT:
There is provided an EL light-emitting device with less uneven brightness. When a drain current of a plurality of current controlling TFTs is Id, a mobility is μ, a gate capacitance per unit area is Co, a maximum gate voltage is Vgs(max), a channel width is W, a channel length is L, an average value of a threshold voltage is Vth, a deviation from the average value of the threshold voltage is ΔVth, and a difference in emission brightness of a plurality of EL elements is within a range of ±n %, a semiconductor display device is characterized in thatA=2Idμ*C0A(Vgs(max)-Vth)2≦WL≦(1+n100-1)2*AΔVth2ΔVth≦(1+n100-1)*A*L/W
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Koyama Jun
Osada Mai
Yamazaki Shunpei
Abdulselam Abbas I
Fish & Richardson P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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