Patent ID: 8537088
Filing Date: 2013-09-17
Classification: G09G

Abstract:
1. A source driver chip of a liquid crystal display comprising: a multiplexer and digital-to-analog conversion module for inputting N data signals; a first input module for inputting one or more external circuit signals; an input selection controller connected to the multiplexer and digital-to-analog conversion module and the first input module; a data signal output channel group connected to the input selection controller and in which M operational amplifiers being disposed, M being larger than or equal to N; an output selection controller connected to the data signal output channel group; a data signal output terminal connected to the output selection controller and used to output amplified data signals; and a first output module connected to the output selection controller and used to output amplified external circuit signals, wherein the input selection controller and the output selection controller are used to connect N operational amplifiers of the M operational amplifiers to the multiplexer and digital-to-analog conversion module so as to amplify the N data signals respectively, and connect at least one of remaining (M−N) operational amplifiers of the M operational amplifiers to the first input module so as to amplify at least one of the external circuit signals.