Optical compensation device and optical compensation system including the same
An optical compensation device includes a measurement part that measures a luminance of a reference point of a display panel displaying an image and a luminance of a neighboring point separated from the reference point to generate measurement data, a camera that photographs a surface of the display panel to generate a photographed image, and a compensation part that generates a scaling value of the neighboring point based on the measurement data of the reference point, a photographed data generated based on the photographed image of the reference point, the measurement data of the neighboring point, and a photographed data generated based on the photographed image of the neighboring point, and generates compensation data of the neighboring point based on the scaling value of the neighboring point and the photographed data of the reference point.
1. An optical compensation device comprising:
a measurement part that measures a luminance of a reference point of a display panel displaying an image and a luminance of at least one neighboring point separated from the reference point and generates measurement data;
a camera that photographs a surface of the display panel and generates a photographed image; and
a compensation part that includes circuitry and that generates a scaling value of the at least one neighboring point based on the measurement data of the reference point, a photographed data generated based on the photographed image of the reference point, the measurement data of the at least one neighboring point, and a photographed data generated based on the photographed image of the at least one neighboring point, and generates compensation data of the at least one neighboring point based on the scaling value of the at least one neighboring point and the photographed data of the reference point.
2. The optical compensation device of claim 1 , wherein the compensation part generates the scaling value by multiplying a ratio of the photographed data of the at least one neighboring point to the measurement data of the at least one neighboring point and a ratio of the measurement data of the reference point to the photographed data of the reference point.
3. The optical compensation device of claim 1 , wherein the compensation part generates the compensation data of the at least one neighboring point by multiplying the photographed data of the reference point and the scaling value of the at least one neighboring point.
4. The optical compensation device of claim 1 , wherein the compensation part generates compensation data of the reference point which is the same as the photographed data of the reference point.
5. The optical compensation device of claim 4 , wherein the compensation part performs interpolation based on the compensation data of the reference point and the compensation data of the at least one neighboring point and generates compensation data of a specific point between the reference point and the at least one neighboring point.
6. The optical compensation device of claim 1 , wherein in case that the measurement data of the reference point is the same as the measurement data of the at least one neighboring point, and the photographed data of the reference point is larger than the photographed data of the at least one neighboring point, the compensation data of the at least one neighboring point is smaller than compensation data of the reference point.
7. The optical compensation device of claim 1 , wherein in case that the measurement data of the reference point is larger than the measurement data of the at least one neighboring point, and the photographed data of the reference point is the same as the photographed data of the at least one neighboring point, the compensation data of the at least one neighboring point is larger than compensation data of the reference point.
8. The optical compensation device of claim 1 , wherein the measurement part directly contacts the reference point of the display panel or at least one neighboring point of the display panel to measure the luminance of the reference point or the at least one neighboring point.
9. The optical compensation device of claim 1 , wherein the compensation part pretreats the photographed image of the camera and generates photographed data corresponding to each of the reference point and the at least one neighboring point, that generates the scaling value, and generates the compensation data.
10. The optical compensation device of claim 9 , wherein
the compensation part aligns a plurality of pixels of the display panel and a plurality of pixels of the photographed image,
the compensation part filters the plurality of pixels of the photographed image, and
the compensation part matches the plurality of pixels of the photographed image with each of the plurality of pixels of the display panel.
11. The optical compensation device of claim 10 , wherein the compensation part filters the plurality of pixels of the photographed image using a Gaussian filter.
12. The optical compensation device of claim 1 , wherein the measurement part measures a luminance of each of red image, green image, and blue image displayed on the display panel and generates measurement data of each of the red image, green image, and blue image.
13. The optical compensation device of claim 1 , wherein the measurement part measures a luminance of a white image displayed on the display panel and generates measurement data of the white image.
14. An optical compensation system comprising:
a display device including a display panel displaying an image; and
an optical compensation device that generates compensation data based on an image of the display device,
wherein the optical compensation device comprises:
a measurement part that measures a luminance of a reference point of the display panel and a luminance of at least one neighboring point separated from the reference point and generates measurement data;
a camera that photographs a surface of the display panel and generates a photographed image; and
a compensation part that includes circuitry and that generates a scaling value of the at least one neighboring point based on the measurement data of the reference point, a photographed data generated based on the photographed image of the reference point, the measurement data of the at least one neighboring point, and a photographed data generated based on the photographed image of the at least one neighboring point, and generates compensation data of the at least one neighboring point based on the scaling value of the at least one neighboring point and the photographed data of the reference point.
15. The optical compensation system of claim 14 , wherein the compensation part generates the scaling value by multiplying a ratio of the photographed data of the at least one neighboring point to the measurement data of the at least one neighboring point and a ratio of the measurement data of the reference point to the photographed data of the reference point.
16. The optical compensation system of claim 14 , wherein the compensation part generates the compensation data of the at least one neighboring point by multiplying the photographed data of the reference point and the scaling value of the at least one neighboring point.
17. The optical compensation system of claim 14 , wherein the display device further includes:
a data driver that supplies a data voltage to a data line of the display panel;
a gate driver that supplies a gate signal to a gate line of the display panel;
a timing controller that controls driving timings of the data driver and the gate driver; and
a memory that stores the compensation data and supplies the compensation data to the timing controller.
18. The optical compensation system of claim 17 , wherein the compensation part generates the compensation data of the at least one neighboring point and supplies the compensation data to the memory.
19. The optical compensation system of claim 17 , wherein the timing controller receives the compensation data of the at least one neighboring point from the memory, and supplies the compensation data and a data control signal for controlling an operation timing of the data driver to the data driver.
20. The optical compensation system of claim 17 , wherein the data driver generates the data voltage based on the compensation data of the at least one neighboring point.