Patent ID: 8624942
Filing Date: 2014-01-07
Classification: G09G

Abstract:
1. A luminance correction system for an organic light emitting display, comprising: a screen analyzing unit configured to analyze a screen displayed on a display unit of the organic light emitting display to measure luminance and color coordinates for reference gray scale levels; a reference offset value setting unit configured to set reference offset values for the reference gray scale levels to correspond to a screen analyzing result obtained by the screen analyzing unit; a gamma voltage correcting unit configured to correct reference gamma voltages for the reference gray scale levels to correspond to the reference offset values set by the reference offset value setting unit and to output the corrected reference gamma voltages; a gamma voltage applying unit configured to apply the reference gamma voltages corrected by the gamma voltage correcting unit to a data driver of the organic light emitting display; and an additional offset value setting unit configured to set an additional offset value for at least one gray scale level among gray scale levels other than the reference gray scale levels; and a storage unit configured to store a lookup table from which additional offset values of red, green, and blue pixels are determined based on the reference offset value.