Patent ID: 8823687
Filing Date: 2014-09-02
Classification: G09G

Abstract:
1. A signal line drive circuit comprising: a positive voltage supply section adapted to supply a plurality of positive voltages; a negative voltage supply section adapted to supply a plurality of negative voltages; positive and negative line buffers arranged on a first axis and adapted to respectively distribute input digital signals to a positive and a negative selector, respectively; the positive selector adapted to select a voltage level from among a plurality of voltage levels supplied from the positive voltage supply section according to the digital signal supplied from one of the line buffers; the negative selector adapted to select a voltage level from among a plurality of voltage levels supplied from the negative voltage supply section according to the digital signal supplied from one of the line buffers; and an output selector which can switch the voltages selected by the positive and negative selectors between positive and negative levels for output to signal lines, wherein the positive selector and the negative selector are symmetrically arranged with respect to the first axis, and wherein the positive and negative line buffers are alternately arranged along the first axis and between the positive selector and the negative selector.