Patent ID: 8416176
Filing Date: 2013-04-09
Classification: G09G

Abstract:
1. A data driving apparatus for a liquid crystal display device, comprising: a first output switch switching an electrical connection between a first amplifier providing a positive gradation voltage and a first data line in response to a control signal; a second output switch switching an electrical connection between a second amplifier providing a negative gradation voltage and a second data line in response to the control signal; a charge sharing line sharing electric charges of the first and second data lines; a first charge sharing switch switching an electrical connection between the first data line and the charge sharing line in response to the control signal; and a second charge sharing switch switching an electrical connection between the second data line and the charge sharing line in response to the control signal, wherein the first and second output switches are opened in a high state of the control signal, and the first and second charge sharing switches are shorted in the high state of the control signal, thereby sharing the electric charges of the first and second data lines through the first charge sharing switch, the charge sharing line, and the second charge sharing switch, and wherein the first and second output switches are shorted in a low state of the control signal, and the first and second charge sharing switches are opened in the low state of the control signal.