Display device and control methods therefor
View Patent ↗A display device, includes: a display panel comprising a plurality of pixels; a signal controller which receives an n+k bit first image signal to divide one frame into 2 k number of sub frames and generates a non-image signal according to an upper k most significant bits of the binary code and a second image signal with a lower n bit, of the first image signal in one frame with a predetermined rate; and a data driver which supplies a data voltage selected on the basis of the non-image signal and the second image signal, to the pixels.
1. A display device comprising:
a display panel comprising a plurality of pixels;
a signal controller which receives an n+k bit binary coded first image signal, divides one frame into 2 k sub frames, and generates a non-image signal from the upper k most significant bits of the binary code and a second image signal from the lower n bits in one frame with a predetermined rate; and
a data driver which supplies the pixels with a data voltage selected on the basis of the non-image signal and the second image signal.
2. The display device according to claim 1 , wherein the signal controller generates the second image signal in m+1 of the sub frames if the decimal value of the upper k most significant bits of the binary code is m.
3. The display device according to claim 2 , wherein a sub frame displaying the non-image signal in one frame is formed prior to a sub frame displaying the second image signal.
4. The display device according to claim 2 , wherein a sub frame displaying the second image signal in one frame is formed prior to a sub frame displaying the non-image signal.
5. The display device according to claim 2 , wherein sub frames displaying the non-image signal are consecutively formed.
6. The display device according to claim 1 , wherein the signal controller generates the second image signal in 2 k −m number of sub frames if the decimal value of the upper k most significant bits of the binary code is m.
7. The display device according to claim 6 , wherein a sub frame displaying the non-image signal in one frame is formed prior to the sub frame displaying the second image signal.
8. The display device according to claim 6 , wherein the sub frame displaying the second image signal in one frame is formed prior to a sub frame displaying the non-image signal.
9. The display device according to claim 6 , wherein sub frames displaying the non-image signal are consecutively formed.
10. The display device according to claim 1 , wherein the sub frame displaying the non-image signal is represented in black in the display panel.
11. The display device according to claim 1 , wherein the sub frame displaying the non-image signal is represented in gray in the display panel.
12. The display device according to claim 1 , wherein 60 frames are formed per second.
13. The display device according to claim 1 , wherein the display panel further comprises a first substrate, a second substrate and a liquid crystal layer disposed between the first and second substrates, the liquid crystal layer comprising liquid crystal molecules aligned in an optically compensated birefringent (OCB) mode.
14. A method of controlling a display device, comprising:
receiving an n+k bit first image signal in one frame;
dividing one frame into 2 k sub frames and generating a non-image signal formed according to the upper k most significant bits of the binary code in the first image signal and a second image signal from the lower n bits of the first image signal in one frame with a predetermined rate;
forming a data voltage based on the non-image signal and the second image signal; and
forming a plurality of the sub frames in one frame by supplying the data voltage.
15. The method according to claim 14 , wherein the forming of the sub frames comprises generating the second image signal in m+1 number of the sub frames if the decimal value of the upper k most significant bits of the binary code is m.
16. The method according to claim 15 , wherein the forming of the sub frames comprises forming a sub frame displaying the non-image signal in one frame prior to a sub frame displaying the second image signal.
17. The method according to claim 15 , wherein the forming of the sub frames comprises forming a sub frame displaying the second image signal in one frame prior to a sub frame displaying the non-image signal.
18. The method according to claim 15 , wherein the forming of the sub frames comprises forming sub frames displaying the non-image signal consecutively.
19. The method according to claim 14 , wherein the forming of the sub frames comprises generating the second image signal in 2 k −m number of the sub frames if the decimal value of the upper k most significant bits of the binary code is m.
20. The method according to claim 14 , wherein the sub frame displaying the non-image signal is represented in black or gray in the display panel.
21. The method according to claim 14 , wherein 60 frames are formed per second.