Active solid-state devices (e.g. – transistors – solid-state diode – Non-single crystal – or recrystallized – semiconductor... – Amorphous semiconductor material
Reexamination Certificate
2008-04-15
2008-04-15
Owens, Douglas W. (Department: 2821)
Active solid-state devices (e.g., transistors, solid-state diode
Non-single crystal, or recrystallized, semiconductor...
Amorphous semiconductor material
C315S169200, C315S169100, C257S059000, C257S072000, C257S347000
Reexamination Certificate
active
10848147
ABSTRACT:
An EL display device capable of producing a vivid multi-gradation color display, and an electronic device having the EL display device. An electric current supplied to an EL element110is controlled by providing a resistor109between a current control TFT108and the EL element110formed in a pixel104, the resistor109having a resistance higher than the on-resistance of the current control TFT108. The gradation display is executed by a time-division drive system which controls the emission and non-emission of light of the EL element110by time, preventing the effect caused by a dispersion in the characteristics of the current control TFT108.
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Owens Douglas W.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Tran Chuc
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