Patent ID: 8711136

Claim:
A calibration system of a display device using transfer functions, the calibration system comprising: a display panel; a data driving IC configured to generate a grayscale voltage which is applied to the display panel, according to a predetermined gamma register value; a transfer function processing unit including: a voltage transfer function for calculating a voltage condition for a change of luminance; a luminance transfer function for calculating a luminance value for a change of voltage; and a transfer function algorithm having a plurality of first transfer factors corresponding to a correlation between the voltage transfer function and the luminance transfer function, wherein the transfer function processing unit is configured to apply a measurement luminance value obtained by applying a test pattern having a specific grayscale voltage value to the display panel, a voltage condition, and the predetermined gamma register value to the transfer function algorithm to thereby calculate a plurality of second transfer factors, and calculate an auto register for adjusting the predetermined gamma register value according to a difference between the first and second transfer factors, a driving board including: a default code memory for storing a default code having a default register which is used to calculate the auto register, a target code memory for storing a target code having a target register which is used to calculate the default register, and a voltage generator for generating a driving voltage necessary for driving the display panel and the data driving IC; a luminance measurer configured to measure luminance of the display panel upon application of the test pattern and generate luminance measurement data; and a control center configured to receive an initial driving condition of the data driving IC, and apply a work command signal for sequentially performing calibrations and the luminance measurement data to the transfer function processing unit.