| 摘要 |
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.
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