Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – In combination with or also constituting light responsive...
Reexamination Certificate
2008-06-19
2010-10-05
Fourson, George (Department: 2823)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
In combination with or also constituting light responsive...
C257S290000, C257S431000, C257SE33053, C257SE33076, C257SE31096, C257SE31111, C257SE31113
Reexamination Certificate
active
07808008
ABSTRACT:
A display device in which not only a variation in a current value due to a threshold voltage but also a variation in a current value due to mobility are prevented from influencing luminance with respect to all the levels of grayscale to be displayed. After applying an initial potential for correction to a gate and a drain of a driving transistor, the gate and the drain of the driving transistor is kept connected in a floating state, and a voltage is held in a capacitor before a voltage between the gate and a source of the driving transistor becomes equal to a threshold voltage. When a voltage obtained by subtracting the voltage held in the capacitor from a voltage of a video signal is applied to the gate and the source of the driving transistor, a current is supplied to a light-emitting element. A value of an initial voltage for correction differs in accordance with the voltage of the video signal.
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Fish & Richardson P.C.
Fourson George
Semiconductor Energy Laboratory Co,. Ltd.
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