Organic electroluminescent display and driving method thereof
First Claim
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1. An organic electroluminescent (EL) display comprising:
- a panel including a plurality of data lines, a plurality of scan lines intersecting the data lines, and a plurality of pixels provided on areas defined by the data lines and the scan lines, each pixel including an organic EL device;
a scan driver applying scan signals to the scan lines;
a data driver applying data voltages corresponding to gray data to the data lines; and
a subframe generator receiving a data signal and a synchronization signal for one frame, dividing the frame into a plurality of subframes, and outputting a corrected gray data and a corrected synchronization signal for each subframe.
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Abstract
The present invention relates to an organic electroluminescent display and a driving method thereof, which divides one frame into a plurality of subframes. Since the present invention divides one frame into several subframes, and drives an organic EL device with the subframes assigned to the upper bits and with the corrected gray data for representing the detailed grays between the basic grays during the subframes assigned to the lower bits, it is possible to represent sufficient number of grays regardless of the unstable luminescence characteristics of an organic EL device.
63 Citations
10 Claims
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1. An organic electroluminescent (EL) display comprising:
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a panel including a plurality of data lines, a plurality of scan lines intersecting the data lines, and a plurality of pixels provided on areas defined by the data lines and the scan lines, each pixel including an organic EL device; a scan driver applying scan signals to the scan lines; a data driver applying data voltages corresponding to gray data to the data lines; and a subframe generator receiving a data signal and a synchronization signal for one frame, dividing the frame into a plurality of subframes, and outputting a corrected gray data and a corrected synchronization signal for each subframe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of driving an organic electroluminescent (EL) display including a plurality of data lines, a plurality of scan lines intersecting the data lines, and a plurality of pixels formed on areas defined by the data lines and the scan lines and including respective organic EL devices, the method comprising:
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a fist step receiving a data signal and a synchronization signal for a frame; a second step driving the frame into a plurality of subframes and outputting a corrected gray data and a corrected synchronization signal for each subframe; a third step applying scan signals to the scan lines by subframe unit; and a fourth step applying data voltages corresponding to the corrected gray data outputted in the second step to the data lines by subframe unit. - View Dependent Claims (10)
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Specification