Display apparatus

Patent metadata

Field	Value
Publication number	US-10068517-B2
Application number	US-201615073960-A
Country	US
Kind code	B2
Filing date	Mar 18, 2016
Priority date	Jun 25, 2015
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A display apparatus includes a timing controller and a display panel, in which the timing controller generates first output image data based on first input image data corresponding to a first frame set, the display panel includes a plurality of pixels and displays a first output image based on the first output image data during the first frame set, and the first frame set includes a first frame and a second frame, where the duration of the second frame is different from the duration of the first frame.

First claim

What is claimed is:

1. A display apparatus comprising:
a timing controller configured to generate first output image data based on first input image data corresponding to a first frame set; and
a display panel including a plurality of pixels, the display panel configured to display a first output image based on the first output image data during the first frame set,
wherein the first frame set includes a first frame and a second frame, a duration of the second frame being different from a duration of the first frame, and
wherein the first output image includes a first image and a second image, the first image having first grayscales and being displayed on the display panel during the duration of the first frame, the second image having second grayscales different from the first grayscales and being displayed on the display panel during the duration of the second frame;
wherein the first frame set further includes a third frame and a fourth frame, a duration of the third frame being different from the duration of the second frame, a duration of the fourth frame being different from the duration of the third frame,
wherein the first output image further includes a third image and a fourth image, the third image having third grayscales different from the second grayscales and being displayed on the display panel during the duration of the third frame, and the fourth image having fourth grayscales different from the third grayscales and being displayed on the display panel during the duration of the fourth frame; and
wherein a rising response for a liquid crystal in the display panel is implemented during the first and third frames, and
wherein a falling response for the liquid crystal is implemented during the second and fourth frames.

2. The display apparatus of claim 1 , wherein the first and second frames are two consecutive frames.

3. The display apparatus of claim 1 , wherein a rising response for a liquid crystal in the display panel is implemented during the first frame, and
wherein a falling response for the liquid crystal is implemented during the second frame.

4. The display apparatus of claim 3 , wherein the duration of the first frame is longer than the duration of the second frame.

5. The display apparatus of claim 3 , wherein the duration of the first frame is shorter than the duration of the second frame.

6. The display apparatus of claim 5 , wherein the timing controller performs a dynamic capacitance compensation (DCC) on the first input image data to compensate the rising response for the liquid crystal.

7. The display apparatus of claim 1 , wherein a first data voltage applied to a first pixel among the plurality of pixels during the duration of the first frame is generated based on a first gamma curve, and
wherein a second data voltage applied to the first pixel during the duration of the second frame is generated based on a second gamma curve different from the first gamma curve.

8. The display apparatus of claim 7 , wherein a luminance of a first partial image displayed on the first pixel based on the first data voltage is higher than a luminance of a second partial image displayed on the first pixel based on the second data voltage.

9. The display apparatus of claim 7 , wherein a polarity of the first data voltage with respect to a common voltage is different from a polarity of the second data voltage with respect to the common voltage.

10. The display apparatus of claim 1 , wherein the timing controller further generates second output image data based on second input image data corresponding to a second frame set subsequent to the first frame set,
wherein the display panel further displays a second output image based on the second output image data during the second frame set,
wherein the second frame set includes a third frame and a fourth frame, a duration of the fourth frame being different from a duration of the third frame, and
wherein the second output image includes a third image and a fourth image, the third image having third grayscales and being displayed on the display panel during the duration of the third frame, and the fourth image having fourth grayscales different from the third grayscales and being displayed on the display panel during the duration of the fourth frame.

11. The display apparatus of claim 10 , wherein a first data voltage applied to a first pixel among the plurality of pixels during the duration of the first frame and a second data voltage applied to the first pixel during the duration of the third frame are generated based on a first gamma curve, and
wherein a third data voltage applied to the first pixel during the duration of the second frame and a fourth data voltage applied to the first pixel during the duration of the fourth frame are generated based on a second gamma curve different from the first gamma curve.

12. The display apparatus of claim 10 , wherein a first data voltage applied to a first pixel among the plurality of pixels during the duration of the first frame and a second data voltage applied to the first pixel during the duration of the fourth frame are generated based on a first gamma curve, and
wherein a third data voltage applied to the first pixel during the duration of the second frame and a fourth data voltage applied to the first pixel during the duration of the third frame are generated based on a second gamma curve different from the first gamma curve.

13. The display apparatus of claim 1 , wherein each of the plurality of pixels includes a first sub-pixel and a second sub-pixel.

14. The display apparatus of claim 13 , wherein a first partial image displayed on the first sub-pixel and a second partial image displayed on the second sub-pixel are generated based on different gamma curves.

15. The display apparatus of claim 1 , wherein the first, second, third and fourth frames are four consecutive frames.

16. The display apparatus of claim 1 , wherein the duration of the first frame is longer than the duration of the second frame, and
wherein the duration of the third frame is longer than the duration of the fourth frame.

17. The display apparatus of claim 1 , wherein the duration of the first frame is shorter than the duration of the second frame, and
wherein the duration of the third frame is shorter than the duration of the fourth frame.

18. The display apparatus of claim 17 , wherein the timing controller performs a dynamic capacitance compensation (DCC) on the first input image data to compensate the rising response for the liquid crystal.

19. The display apparatus of claim 1 , wherein a first data voltage applied to a first pixel among the plurality of pixels during the first frame and a second data voltage applied to the first pixel during the third frame are generated based on a first gamma curve, and wherein a third data voltage applied to the first pixel during the second frame and a fourth data voltage applied to the first pixel during the fourth frame are generated based on a second gamma curve different from the first gamma curve.

20. The display apparatus of claim 1 , wherein a first data voltage applied to a first pixel among the plurality of pixels during the first frame is generated based on a first gamma curve, and
wherein a second data voltage applied to the first pixel during the second frame, a third data voltage applied to the first pixel during the third frame and a fourth data voltage applied to the first pixel during the fourth frame are generated based on a second gamma curve different from the fir

Assignees

• Samsung Display Co Ltd

Inventors

• Whangbo Sangwoo

Classifications

• G09G2320/0252

  Improving the response speed · CPC title

• G09G2320/0247

  Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes · CPC title

• G09G3/3648 Primary

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G09G2320/0285

  using tables for spatial correction of display data · CPC title

• G09G2320/0257

  Reduction of after-image effects · CPC title