| 摘要 |
An organic light emitting display includes a display panel including a plurality of pixels, a compensation area setting unit for selecting an additional compensation requirement area, that is more excessively degraded than an average degradation, based on degradation detection data indicating a degradation degree of organic light emitting diodes formed in the pixels, an edge information extraction unit that analyzes input image data corresponding to the additional compensation requirement area and obtains edge information of an input image, a compensation gain calculation unit for differentially calculating a compensation gain to be applied to compensation data in each of the compensation blocks belonging to the additional compensation requirement area based upon an amount of edge information; and a data modulation unit producing modulation image data to be displayed on the display panel. |
| 主权项 |
1. An organic light emitting display comprising:
a display panel including a plurality of pixels each having an organic light emitting diode, the display panel displaying a visual image; and a degradation compensation circuit comprising:
a compensation area setting circuit to divide input image data into M×N compensation blocks, where M and N are integers greater than 0 and each compensation block corresponds to a group of pixels of the plurality of pixels, and select an additional compensation requirement area that includes compensation blocks corresponding to pixels that are more excessively degraded than those pixels in an averagely degraded area, based on degradation detection data indicating a degradation degree of the organic light emitting diodes of the plurality of pixels;an edge information extraction circuit to analyze the input image data corresponding to the additional compensation requirement area and obtain edge information of the input image data, including a number of edges;a compensation gain calculation circuit to calculate a compensation gain to be applied to compensation data in each of the compensation blocks in the additional compensation requirement area depending on the number of edges, and does not change the compensation data of each compensation block which is not in the additional compensation requirement area, wherein the compensation gain in the additional compensation requirement area is inversely proportional to the number of edges; anda data modulation circuit to multiply compensation data of each pixel, to which the compensation gain is applied, by the input image data and produce modulation image data to be displayed on the display panel. |
