ASSURING UNIFORMITY IN THE OUTPUT OF AN OLED
First Claim
1. A method for making an organic EL display device, wherein the organic EL display device is formed by arranging a plurality of display pixels in a matrix pattern, each display pixel including an organic EL element, the method comprising:
- dividing a display area into a plurality of predetermined detection areas to selectively cause organic EL elements of a plurality of display pixels in the detection areas to emit light to detect a driving current for each detection area;
detecting, based on driving current values detected for respective detection areas, a detection area that has a luminance value different from that of other detection areas and requires correction;
calculating correction data required for correcting image data for each pixel that is input to the detection area that requires correction; and
storing, in a memory, a position of a pixel that requires correction and related correction data calculated for the pixel.
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Accused Products
Abstract
A display area of a display panel is divided into a plurality of areas, and a current detector detects a driving current (i.e. CV current) that flows when light is emitted from an area or a block including a plurality of areas. Such current detection is repeated while sequentially changing the target area or block and a CPU detects an area that has a current value different from that of other areas (i.e. an area that requires correction) based on results of the results of current detection. A similar process is performed on smaller areas obtained by subdividing the area to find a smaller area that requires correction. Thus, a correction value is obtained for each pixel and the correction values are efficiently calculated.
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Citations
12 Claims
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1. A method for making an organic EL display device, wherein the organic EL display device is formed by arranging a plurality of display pixels in a matrix pattern, each display pixel including an organic EL element, the method comprising:
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dividing a display area into a plurality of predetermined detection areas to selectively cause organic EL elements of a plurality of display pixels in the detection areas to emit light to detect a driving current for each detection area;
detecting, based on driving current values detected for respective detection areas, a detection area that has a luminance value different from that of other detection areas and requires correction;
calculating correction data required for correcting image data for each pixel that is input to the detection area that requires correction; and
storing, in a memory, a position of a pixel that requires correction and related correction data calculated for the pixel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An organic EL display device formed by arranging a plurality of display pixels in a matrix pattern, each display pixel including an organic EL element, comprising:
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means for dividing a display area into a plurality of predetermined detection areas to selectively cause organic EL elements of a plurality of display pixels in the detection areas to emit light to detect a driving current for each detection area;
means for detecting, based on driving current values detected for respective detection areas, a detection area that has a luminance value different from that of other detection areas and requires correction;
means for calculating correction data required for correcting image data for each pixel that is input to the detection area that requires correction;
a memory for storing a position of a pixel that requires correction and related correction data calculated for the pixel; and
means for correcting input data with reference to the position of the pixel that requires correction and the correction data that are stored in the memory. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification