Stacked amplifier with charge sharing

Details Stacked amplifier with charge sharing Stacked amplifier with charge sharing

2011-03-22

2011-03-22

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S210000

Reexamination Certificate

active

07911437

ABSTRACT:
Column drivers for graphics displays can be arranged as stacked amplifiers with various switching circuits arranged in a charge sharing topology. The apparatus includes an upper and lower amplifier circuit, an input switching circuit, and an output switching circuit. The upper and lower amplifier circuits drive column lines can be swapped during operation by the input and output switching circuits. During a charge share operation, the outputs of the amplifiers are coupled to a common voltage via the output switching circuit, while the transistors from the output stage of each amplifier is reconfigured for charge sharing. Minimally sized transistors are utilized inside the output stage of the amplifiers for charge share configuration. Since the existing transistors from the output stage are utilized for the charge sharing operation, additional space savings and power reductions can be realized.

REFERENCES:
patent: 5528256 (1996-06-01), Erhart et al.
patent: 5852426 (1998-12-01), Erhart et al.
patent: 6549186 (2003-04-01), Kwon
patent: 6954201 (2005-10-01), Ludden et al.
patent: 6970152 (2005-11-01), Bell et al.
patent: 2006/0164374 (2006-07-01), Chang et al.
patent: 2008/0278427 (2008-11-01), Jang et al.
“PPDS Technology—Next-Generation Interface for LCD TV,” www.national.com,National Semiconductor Corporation, 2006, 3 pgs.
Richard I. McCartney et al., 60.1 A Third Generation Timing Controller and Column Driver Architecture Using Point-to-Point Differential Signaling,Society for Information Display SID DigestMay 25, 2004, 4 pgs.
“Using Smart Charge Sharing to Reduce Power and Boost column Driver Performance,” www.national.com,2002 National Semiconductor Corporation, pp. 1-4.

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