Patent ID: 9349317
Filing Date: 2016-05-24
CPC Classification: G09G

Claim Text:
1. A method of driving an organic light emitting display device comprising: generating a first gain value, which is initially set; after the first gain value is obtained, generating an estimated degradation value of a driving TFT by using accumulated data through input data counting, a sum of the accumulated data being stored in a first memory by counting the input data, and the sum of the accumulated data and a shift value of the driving TFT being stored in a second memory for a porch period between (n) frame and (n+1) frame; compensating all the pixels of a display panel by using the first gain value, and the estimated degradation value; generating a sensing value by sensing all or some of the pixels of the display panel after driving is performed for a certain time; comparing the sensing value with the estimated degradation value; generating a second gain value by compensating the first gain value if an error between the estimated degradation value and the sensing value is more than a reference value; generating compensation data by compensating the estimated degradation value by using the second gain value; and compensating all the pixels of the display panel by using the compensation data.