Patent ID: 8247966

Claim:
An organic light emitting device, comprising: a first substrate; scan lines and data lines arranged on the first substrate; a plurality of unit pixels, wherein each unit pixel comprises a R sub-pixel corresponding to a red color, a G sub-pixel corresponding to a green color, and a B sub-pixel corresponding to a blue color positioned in a region on the first substrate defined by a crossing of the scan and data lines, wherein a number of the R, G, and B sub-pixels is different from one another, wherein each R, G and B sub-pixel comprises a first electrode, a second electrode, and a light-emitting layer interposed between the first and second electrodes, and wherein a number of the B sub-pixels that have a shortest life-time expectancy among the R, G and B sub-pixels is larger than a number of the R and G sub-pixels; and a driver configured to apply a driving current to the B sub-pixels, which is different than a driving current applied to the R and G sub-pixels, wherein a plurality of the B sub-pixels is driven by a same driving thin film transistor which is connected commonly to first electrodes of the B sub-pixels by conductive spacers, wherein the driver is further configured to apply a driving current to each of the B sub-pixels that is less than the driving current applied to the R and G sub-pixels, and wherein the plurality of the B sub-pixels are disposed adjacent to each other and on a same side of a corresponding scan line.