Patent ID: 7821485
Filing Date: 2010-10-26
Classification: G09G

Abstract:
1. A source driver output circuit of a thin film transistor (TFT) liquid crystal display (LCD), the source driver output circuit comprising: first through n-th (where n is an integer) voltage generators that receive first through n-th corresponding input voltages and generate first through n-th sub input voltages; first through n-th switching portions that transfer the first through n-th sub input voltages as first through n-th corresponding output voltages to first through n-th corresponding source lines when activated, and disconnect the first through n-th sub input voltages when deactivated; and first through n-th sub switching portions that connect first and second share lines to the first through n-th corresponding source lines when activated and disconnect the first and second share lines when deactivated, the first and second share lines having share line voltages, wherein the first through n-th sub switching portions includes odd-numbered sub switching portions and even-numbered sub switching portions, wherein the odd-numbered sub switching portions of the first through n-th sub switching portions are coupled to the first share line and the even-numbered sub switching portions of the first through n-th sub switching portions are coupled to the second share line, wherein the first share line is coupled to different sub switching portions than the second share line, wherein the odd-numbered sub switching portions are coupled to different source lines than the even-numbered sub switching portions; and a switching circuit that maintains each of the share line voltages at an intermediate voltage level that is between the share line voltages of the first and second share lines, respectively, wherein the switching circuit is coupled directly between the first and second share lines, and transfers charges between the first share line and the second share line.