Patent ID: 7932916

Claim:
An organic light emitting diode (OLED) device comprising: a timing controller for performing a gamma correction of inputted image data for the OLED device, and then changing a bit number of the gamma-corrected image data to thereby output converted image data, wherein the inputted image data has 6 bits, the gamma-corrected image data has 8 bits; and a data drive unit for outputting a data drive signal on the basis of the converted image data; wherein the timing controller converts gamma characteristic of the inputted image data according to a gamma 2.2 curve when performing the gamma correction of the inputted image data; wherein the timing controller converts gamma characteristic of the inputted image data by determining RGB image data corresponding to the inputted image data from a look-up table; wherein the look-up table is formed in a method of mapping the RGB image data having the converted gamma characteristics by each gray level of the image data; wherein the timing controller includes: a data correction unit for correcting the inputted image data to have predetermined gamma characteristics; and a data control unit for controlling high bit data of the gamma-corrected image data in frequency and location by time and space, according to the remaining low bit data of the gamma-corrected image data; wherein the data of 8 bits of the gamma-corrected image data outputted from the data correction unit is divided into data of high 7 bits and data of low 1 bit; wherein the high 7 bits is referring to 7 most significant bits within the 8 bit data, and the low 1 bit is referring to one least significant bit; wherein four adjacent pixels display the data of the existing high 7 bits of the 8 bit data when the data of the low 1 bit of the 8 bit data is ‘0’; wherein two pixels among the four adjacent pixels display the data of the existing high 7 bits of the 8 bit data while another two pixels among the four adjacent pixels display high 7-bit+1 which is obtained by adding the value of ‘1’ to the existing high 7 bit data of the 8 bit data when the data of the low 1 bit of the 8 bit data is ‘1’.