Active solid-state devices (e.g. – transistors – solid-state diode – Non-single crystal – or recrystallized – semiconductor... – Field effect device in non-single crystal – or...
Reexamination Certificate
2007-03-06
2007-03-06
Landau, Matthew C. (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Non-single crystal, or recrystallized, semiconductor...
Field effect device in non-single crystal, or...
C257S064000, C257SE29294, C257SE29273
Reexamination Certificate
active
10727222
ABSTRACT:
A flat panel display lowering an on-current of a driving thin film transistor (TFT), maintaining high switching properties of a switching TFT, maintaining uniform brightness using the driving TFT, and maintaining a life span of a light emitting device while the same voltages are applied to the switching TFT and the driving TFT without changing a size of an active layer. The flat panel display has a light emitting device, a switching thin film transistor including a semiconductor active layer having at least a channel area for transferring a data signal to the light emitting device, and a driving thin film transistor including a semiconductor active layer having at least a channel area for driving the light emitting device so that a predetermined current flows through the light emitting device according to the data signal, the channel areas of the switching TFT and the driving TFT having different directions of current flow.
REFERENCES:
patent: 6177301 (2001-01-01), Jung
patent: 6337232 (2002-01-01), Kusumoto et al.
patent: 6456013 (2002-09-01), Komiya et al.
patent: 2003/0062845 (2003-04-01), Yamazaki et al.
patent: 2001-109399 (2001-04-01), None
patent: 1020010067258 (2001-07-01), None
Kim Hye-Dong
Koo Jae-Bon
Lee Ul-Ho
Park Ji-Yong
H.C. Park & Associates PLC
Landau Matthew C.
Samsung SDI & Co., Ltd.
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