Image data corrector and display device having the same
A display device includes: a pixel unit including first pixels disposed in a first pixel area and second pixels disposed in a second pixel area; an image data corrector adjusting a limit grayscale of first image data corresponding to the first pixel area based on a dimming level defining a maximum luminance at which the pixel unit is able to emit light, and correcting the first image data based on the limit grayscale; a data driver supplying data signals to the pixel unit based on the corrected first image data and second image data corresponding to the second pixel area; and a scan driver supplying scan signals to the pixel unit.
1. A display device comprising:
a pixel unit including first pixels disposed in a first pixel area and second pixels disposed in a second pixel area; and
a controller configured to correct grayscales of a first image data corresponding to the first pixel area based on a dimming level defining a maximum luminance at which the pixel unit is able to emit light,
wherein:
the controller is configured to supply data signals to the pixel unit based on the corrected first image data and second image data corresponding to the second pixel area;
a luminance of the first pixel is lower than a luminance of the second pixel responding to input grayscales in a first grayscale range; and
a number of the first pixels disposed per unit area is less than a number of the second pixels disposed per unit area.
2. The display device of claim 1 , wherein the luminance of the first pixel is higher than the luminance of the second pixel responding to input grayscales in a second grayscale range.
3. The display device of claim 2 , wherein the input grayscales in the second grayscale range are lower than the input grayscales in the first grayscale range.
4. The display device of claim 3 , wherein:
the input grayscales in the first grayscale range are higher than a limit grayscale; and
the input grayscales in the second grayscale range are lower than the limit grayscale.
5. The display device of claim 4 , wherein the luminance of the first pixel is limited to a luminance corresponding to the limit grayscale.
6. The display device of claim 1 , wherein the luminance of the first pixel is same as the luminance of the second pixel responding to input grayscales in a second grayscale range.
7. The display device of claim 6 , wherein the input grayscales in the second grayscale range are lower than the input grayscales in the first grayscale range.
8. The display device of claim 7 , wherein:
the input grayscales in the first grayscale range are higher than a limit grayscale; and
the input grayscales in the second grayscale range are lower than the limit grayscale.
9. The display device of claim 8 , wherein the luminance of the first pixel is limited to a luminance corresponding to the limit grayscale.
10. A controller for a display device including a pixel unit including first pixels disposed in a first pixel area and second pixels disposed in a second pixel area, the controller comprising:
a first circuit configured to correct grayscales of a first image data corresponding to the first pixel area based on a dimming level defining a maximum luminance at which the pixel unit is able to emit light; and
a second circuit configured to supply data signals to the pixel unit based on a corrected first image data and second image data corresponding to the second pixel area,
wherein:
a luminance of the first pixel is lower than a luminance of the second pixel responding to input grayscales in a first grayscale range; and
a number of the first pixels disposed per unit area is less than a number of the second pixels disposed per unit area.
11. The controller of claim 10 , wherein the luminance of the first pixel is higher than the luminance of the second pixel responding to input grayscales in a second grayscale range.
12. The controller of claim 11 , wherein the input grayscales in the second grayscale range are lower than the input grayscales in the first grayscale range.
13. The controller of claim 12 , wherein:
the input grayscales in the first grayscale range are higher than a limit grayscale; and
the input grayscales in the second grayscale range are lower than the limit grayscale.
14. The controller of claim 13 , wherein the luminance of the first pixel is limited to a luminance corresponding to the limit grayscale.
15. The controller of claim 10 , wherein the luminance of the first pixel is same as the luminance of the second pixel responding to input grayscales in a second grayscale range.
16. The controller of claim 15 , wherein the input grayscales in the second grayscale range are lower than the input grayscales in the first grayscale range.
17. The controller of claim 16 , wherein:
the input grayscales in the first grayscale range are higher than a limit grayscale; and
the input grayscales in the second grayscale range are lower than the limit grayscale.
18. The controller of claim 17 , wherein the luminance of the first pixel is limited to a luminance corresponding to the limit grayscale.