Display substrate, display equipment and regional compensation method
First Claim
1. A display substrate comprising a pixel array, a common cathode current detection circuit, and a data signal compensation circuit, whereinthe pixel array comprises a plurality of sub-pixels arranged in a matrix, each of the sub-pixels comprises an organic light emitting diode, which comprises an anode, an organic luminescent layer, and a cathode,the plurality of sub-pixels comprise first sub-pixels and second sub-pixels, each first sub-pixel further comprises a pixel current acquisition circuit configured to acquire a pixel light emitting current of the organic light emitting diode in the first sub-pixel;
- the pixel array is divide into a plurality of cathode common areas each comprising M compensation areas each comprising N sub-pixels, the N sub-pixels comprising one first sub-pixel, organic light emitting diodes of M×
N sub-pixels in a same cathode common area share one common cathode, and M and N both being natural numbers greater than 1;
the common cathode current detection circuit is configured to detect a total current flowing through each common cathode;
the data signal compensation circuit is configured to receive the pixel light emitting current of the first sub-pixel in each of the M compensation areas, receive the total current of the common cathode, and calculate compensation data for each of the sub-pixels according to the pixel light emitting current of the first sub-pixel in each of the M compensation areas and the total current of the common cathode.
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Accused Products
Abstract
A display substrate, a display equipment and a regional compensation method. The display substrate includes a pixel array, a common cathode current detection circuit, and a data signal compensation circuit. The common cathode current detection circuit is configured to detect a total current flowing through each common cathode; the data signal compensation circuit is configured to receive the pixel light emitting current of the first sub-pixel, receive the total current of the common cathode, and calculate compensation data for each of the sub-pixels according to the pixel light emitting current and the total current of the common cathode.
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Citations
20 Claims
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1. A display substrate comprising a pixel array, a common cathode current detection circuit, and a data signal compensation circuit, wherein
the pixel array comprises a plurality of sub-pixels arranged in a matrix, each of the sub-pixels comprises an organic light emitting diode, which comprises an anode, an organic luminescent layer, and a cathode, the plurality of sub-pixels comprise first sub-pixels and second sub-pixels, each first sub-pixel further comprises a pixel current acquisition circuit configured to acquire a pixel light emitting current of the organic light emitting diode in the first sub-pixel; -
the pixel array is divide into a plurality of cathode common areas each comprising M compensation areas each comprising N sub-pixels, the N sub-pixels comprising one first sub-pixel, organic light emitting diodes of M×
N sub-pixels in a same cathode common area share one common cathode, and M and N both being natural numbers greater than 1;the common cathode current detection circuit is configured to detect a total current flowing through each common cathode; the data signal compensation circuit is configured to receive the pixel light emitting current of the first sub-pixel in each of the M compensation areas, receive the total current of the common cathode, and calculate compensation data for each of the sub-pixels according to the pixel light emitting current of the first sub-pixel in each of the M compensation areas and the total current of the common cathode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification