Patent ID: 8704848

Claim:
A method of calibrating a liquid crystal display, the method comprising steps of: measuring the display to generate three first measured data sets by utilizing a measurement unit while the display is capable of displaying three primary-color patterns according to three primary-color-image data sets; measuring the display to generate a second measured data set by utilizing the measurement unit while the display is capable of displaying a black pattern according to a black-image data set; establishing a transform model according to the three first measured data sets, the second measured data set, the three primary-color-image data sets, and the black-image data set by utilizing a processing unit; measuring the display to generate a plurality of third measured data sets by utilizing the measurement unit while the display is capable of displaying a plurality of gray-level patterns according to a plurality of gray-image data sets; establishing three first native display curves according to the second measured data set and the third measured data sets by utilizing the processing unit, wherein the vertical axes of the three first native display curves respectively represent tristimulus values, and the horizontal axes of the three first native display curves represent a gray level index; transforming the three first native display curves into three second native display curves by utilizing the transform model; defining three final target curves by utilizing the processing unit, comprising: normalizing three second target curves to obtain the three final target curves by utilizing the processing unit; transforming three first target curves into the three second target curves by utilizing the transform model; establishing three look-up tables according to the three final target curves and the three second native display curves by utilizing the processing unit; providing an input image data set to the processing unit; converting the input image data set to a calibrated image data set according to the three look-up tables; displaying a calibrated image on the display according to the calibrated image data set; calculating a compensation ratio according to the transform in model and three maximum levels of the three final target curves, wherein a maximum of one of the three first native display curves divided by a corresponding tristimulus value is the compensation ratio, and the corresponding tristimulus value is calculated by using the transfoun model and the three maximum levels of the three final target curves; and increasing a power of a light source of the display according to the compensation ratio.