Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-06-12
2007-06-12
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S589000
Reexamination Certificate
active
11121540
ABSTRACT:
A charge pump circuit of a liquid crystal display driver integrated circuit (LDI) is provided, which can reduce unnecessary current consumption when a load of an output node varies is provided, where, in a gradient mode of a display-on mode, in which an output node of the charge pump circuit has a maximum load, the current driving capability of a driver in the charge pump circuit is increased, and where, in a binary mode, in which the output node of the charge pump circuit has a smaller load than in the gradient mode, the current driving capability of the driver is lower, to prevent unnecessary current consumption caused by too large driving transfer transistors in the driver and to maintain boost efficiency at a proper level.
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Choi Chul
Lee Jae-Goo
Woo Jae-Hyuck
Callahan Timothy P.
F. Chau & Assoc. LLC
Nguyen Hai L.
Samsung Electronics Co,. Ltd.
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