METHOD OF MORE QUICKLY CALIBRATING DISPLAY PANELS AND CALIBRATION APPARATUS FOR PERFORMING THE SAME
First Claim
1. A machine implemented method of compensating an image of a display panel, the method comprising:
- measuring luminance and color of a plurality of full pattern images, the full pattern image including a single full grayscale;
measuring luminance and color of a multi pattern image, the multi pattern image including a plurality of multi grayscales;
generating a first compensating value to displace a position of a multi grayscale region in the multi pattern image to a central portion of the multi pattern image; and
compensating luminance and color of the display panel based on the luminance and the color of the full pattern image, the luminance and the color of the multi pattern image and the first compensating value.
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Abstract
A method of reducing a total, per device, measurements taking time in a calibration system that uses a sensor array that serially reports out its readings and a data processing unit that needs to receive the reported out readings in good order before allowing an under-measurement first display device to advance away from a measurements taking station includes the step of not driving the first display device with all of required full screen test images where each is a full screen display of only a respective one of a predetermined minimum number of grayscale values produced as a minimum number of needed full screen sample images and; in place of at least a first plurality of the not-produced full screen images, driving the under-measurement first display device with a partial screen multi-pattern that presents a plurality of different grayscale values including ones not presented by those of all of the full screen test images that are used to drive the under-measurement first display device. The serially reported out readings from the sensor array for the partial screen multi-pattern and for the full screen test images are obtained and used to generate virtual full screen sample images based on the obtained partial screen multi-pattern and for the full screen test images.
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Citations
20 Claims
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1. A machine implemented method of compensating an image of a display panel, the method comprising:
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measuring luminance and color of a plurality of full pattern images, the full pattern image including a single full grayscale; measuring luminance and color of a multi pattern image, the multi pattern image including a plurality of multi grayscales; generating a first compensating value to displace a position of a multi grayscale region in the multi pattern image to a central portion of the multi pattern image; and compensating luminance and color of the display panel based on the luminance and the color of the full pattern image, the luminance and the color of the multi pattern image and the first compensating value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of driving a display panel, the method comprising:
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measuring luminance and color of a plurality of full pattern images, the full pattern image including a single full grayscale; measuring luminance and color of a multi pattern image, the multi pattern image including a plurality of multi grayscales; generating a first compensating value to displace a position of a multi grayscale region in the multi pattern image to a central portion of the multi pattern image; compensating luminance and color of input image data based on the input image data, the luminance and the color of the full pattern image, the luminance and the color of the multi pattern image and the first compensating value to generate a data signal; and displaying an image on the display panel based on the data signal. - View Dependent Claims (10, 11, 12, 13)
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14. A display apparatus comprising:
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a timing controller configured to compensate luminance and color of input image data to generate a data signal based on the input image data, luminance and color of a plurality of full pattern images, luminance and color of a multi pattern image and a first compensating value to displace a position of a multi grayscale region in the multi pattern image to a central portion of the multi pattern image, the full pattern image including a single full grayscale, the multi pattern image including a plurality of multi grayscales; a data driver configured to convert the data signal into a data voltage having an analog type; and a display panel configured to display an image based on the data voltage. - View Dependent Claims (15, 16, 17, 18)
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19. A method of reducing a total, per device, measurements taking time in a calibration system that uses a sensor array that serially reports out its readings and a data processing unit that needs to receive the reported out readings in good order before allowing an under-measurement first display device to be moved away from a measurements taking position, the method comprising:
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not driving the under-measurement first display device with all full screen test images each being a full screen display of only a respective one of a predetermined minimum number of grayscale values produced as a full screen sample images; in place of at least a first plurality of the not-produced full screen images, driving the under-measurement first display device with a partial screen multi-pattern that presents a plurality of different grayscale values including ones not presented by those of all of the full screen test images that are used to drive the under-measurement first display device; and obtaining serially reported out readings from the sensor array for the partial screen multi-pattern and for the full screen test images that are used to drive the under-measurement first display device.
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20. A machine implemented and automated method for quickly determining luminance and color compensation values for a display panel having a display area populated by a matrix of pixels, where each pixel is independently drivable over a predetermined range of grayscales, the method comprising:
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first driving all the pixels with a first single full grayscale signal to thereby produce a corresponding first full screen image and using a sensor array to measure luminance and color attributes of the produced first full screen image; second driving all the pixels with a different second single full grayscale signal to thereby produce a corresponding second full screen image and using the sensor array to measure luminance and color attributes of the produced second full screen image; third driving at least a subset of the pixels of the display area with a corresponding multi pattern signal to thereby produce a corresponding multi pattern image having a predetermined spatial arrangement of darker and lighter regions and using the sensor array to measure respective luminances and color attributes of the respective and spatially arranged darker and lighter regions of the multi pattern image; using the measured luminances and color attributes of the multi pattern image and of the first and second full screen images to generate luminance and color calibrating factors for the display panel.
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Specification