Patent ID: 9666154
Date: 2017-05-30
CPC Classifications: G09G

Claim:
1. A liquid crystal display, comprising: a signal controller configured to receive an input image signal corresponding to a gray from the outside; an image signal corrector configured to correct the input image signal to generate a data input signal; and a data driver configured to supply a data voltage corresponding to the gray based on the data input signal, wherein the gray includes a black gray, a white gray, and a halftone gray between the black gray and the white gray, wherein the image signal corrector is configured to shift a first input image signal value corresponding to the black gray by a first value based on a common voltage, the image signal corrector is configured to shift a second input image signal value corresponding to the halftone gray by a second value based on the common voltage, and the image signal corrector is configured to shift a third input image signal value corresponding to the white gray by a third value based on the common voltage, wherein the first value is larger than a kickback voltage of the black gray, the second value is larger than a kickback voltage of the halftone gray, and the third value is equal to a kickback voltage of the white gray, wherein the kickback voltage of the black gray is larger than the kickback voltage of the halftone gray, and the kickback voltage of the halftone gray is larger than the kickback voltage of the white gray, and wherein a difference between the first value and the kickback voltage of the black gray is used to set a first dummy value and a difference between the second value and the kickback voltage of the halftone gray is used to set a second dummy value, and wherein the first dummy value and the second dummy value are different from each other.