Display device and apparatus and method for driving the same

摘要

A display device including a liquid crystal display unit and a controller displays an image using a liquid crystal. The controller extracts a compensation data from a gray compensation look-up table (LUT) corresponding to a temperature interval including a peripheral temperature of the display device to output the compensation data to the liquid crystal display unit as a compensated gray data. When the gray compensation LUT does not exist, the controller extracts the compensation data from the gray compensation LUT corresponding to the temperature interval approximating the peripheral temperature to generate the compensated gray data. The gray compensation LUT as a default and a calculated gray compensation LUT may be used to provide the compensated gray data optimized for the response speed of the liquid crystal according to variance in temperature, while reducing a memory capacity of a ROM and a RAM inside the timing controller and an external EEPROM.

主权项

1. A display device, comprising:
a liquid crystal display unit; and a controller that includes a plurality of gray compensation look-up tables (LUTs) respectively corresponding to a plurality of temperature intervals, wherein the controller comprises: a memory storing the gray compensation LUTs; an extraction unit extracting compensation data from the gray compensation LUTs; a subtraction unit generating difference data; a multiplier unit multiplying the difference data by a compensation proportion parameter to generate a temperature compensation value; and a summation unit generating compensated gray data, wherein when a peripheral temperature of the display device is included in at least one of the temperature intervals, the extraction unit extracts first compensation data from the gray compensation LUT corresponding to the temperature interval that includes the peripheral temperature, and outputs the first compensation data to the liquid crystal display unit as compensated gray data, wherein when the peripheral temperature of the display device is not included in any of the temperature intervals, the extraction unit extracts
a second compensation data from the gray compensation LUT corresponding to one of the temperature intervals having a temperature approximating the peripheral temperature,the subtraction unit generates the difference data relating to a difference between current gray data and the second compensation data,the multiplier unit multiplies the difference data by the compensation proportion parameter to generate the temperature compensation value, andthe summation unit sums the temperature compensation value and the current gray data to generate the compensated gray data, wherein if Gn represents the current gray data and if Gc represents the second compensation data, the difference data generated from the subtraction unit is Gn−Gc.