Patent ID: 7733313

Claim:
A picture quality controlling method of a flat panel display device including a display panel having a link pixel including a defective pixel and an adjacent non-defective pixel, that is electrically connected to the defective pixel, comprising: determining a panel defect location data which indicates the location of a panel defective area having a brightness difference in comparison with a non-defective area; determining a panel defect compensation data to compensate the brightness of the panel defect location; determining a charge characteristic compensation data to compensating a charge characteristic of the link pixel; determining a link pixel location data which indicates the location of the link pixel; storing the panel defect location data, the panel defect compensation data, the charge characteristic compensation data, and the link pixel location data in a memory of the flat panel display device; converting a video signal of the panel defective area into a brightness information and a color difference information; modulating the brightness information of the panel defective area by increasing or decreasing the brightness information according to the panel defect compensation data; converting the color difference information and the modulated brightness information into a modulated video signal; generating a compensated video signal by increasing or decreasing the modulated video signal according to the charge characteristic compensation data of the link pixel.