Patent ID: 7800573

Claim:
A display driving circuit comprising: a source driver including a plurality of unit source drivers connected in parallel, the source driver connected to first and second source lines to control the first and second source lines; memory configured to store image data of the first and second source lines and arranged with channels having the same color neighbor each other; and a display panel, wherein the plurality of unit source drivers comprises: a data comparator receiving the image data of the first and second source lines from the memory, determining whether the image data of the first and second source lines are identical, outputting a first switching signal if the image data of the first and second source lines are determined to be different, and outputting a second switching signal if the image data of the first and second source lines are determined to be identical; a plurality of buffers amplifying image data output from the data comparator; and a controller including a plurality of switches connected between the plurality of buffers and channel lines of the first and second source lines and outputting the image data output from the plurality of buffers to the channel lines of the first and second source lines in response to the first and second switching signals, wherein the controller activates buffers corresponding to one of the first and second source lines among the plurality of buffers in response to the second switching signal and deactivates the other buffers and transfers a signal output from the activated buffers to the channel lines of the first and second source lines, and wherein the image data of the first and second source lines includes first and second red (R), green (G), and blue (B) channel data of the first and second source lines, respectively, and the data comparator determines that the image data of the first source line is identical to the image data of the second source line if the first R channel data is identical to the second R channel data, the first G channel data is identical to the second G channel data, and the first B channel data is identical to the second B channel data.