DISPLAY DEVICE AND DRIVING METHOD THEREOF

• US 20110292006A1
• Filed: 01/12/2011
• Published: 12/01/2011
• Est. Priority Date: 05/25/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KIM, Do-Ik
• Granted Patent: US 8,816,941 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

A display device includes a scan driver transmitting a plurality of scan signals to a plurality of scan lines, a data driver transmitting a plurality of data signals to a plurality of data lines, a display unit including a plurality of pixels connected to corresponding scan lines and corresponding data lines, and respectively receiving the corresponding data signal when the plurality of pixels are selected with the corresponding scan signal, and a timing controller controlling the scan driver and the data driver, dividing one frame period into a first viewpoint image display period, a second viewpoint image display period, and a black image display period, and generating image data signals corresponding to the first viewpoint image display period, the second viewpoint image display period, and the black image display period, and supplying the respective image data signals to the data driver, wherein the black image display period is shorter than the first viewpoint image display period and the second viewpoint image display period, and the image data signal corresponding to the black image display period is a black image data signal controlling the plurality of pixels not to emit light.

Claims

1. A display device comprising:

a scan driver transmitting a plurality of scan signals to a plurality of scan lines;

a data driver transmitting a plurality of data signals to a plurality of data lines;

a display unit including a plurality of pixels connected to corresponding scan lines among the plurality of scan lines and corresponding data lines among the plurality of data lines, and respectively receiving corresponding data signals when the plurality of pixels are selected with the corresponding scan signals; and

a timing controller controlling the scan driver and the data driver, dividing one frame period into a first viewpoint image display period, a second viewpoint image display period, and a black image display period, and generating a first viewpoint image data signal corresponding to the first viewpoint image display period, a second viewpoint image data signal corresponding to the second viewpoint image display period, and a black image display signal corresponding to the black image display period, and supplying the first viewpoint image data signal, the second viewpoint image data signal and the black image data signal to the data driver,

wherein the black image display period is shorter than the first viewpoint image display period and the second viewpoint image display period, and the image data signal corresponding to the black image display period is a black image data signal for which the plurality of pixels do not emit light.

2. The display device of claim 1, wherein

the image data signal corresponding to the first viewpoint image display period and the image data signal corresponding to the second viewpoint image display period are a left eye image data signal and a right eye image data signal, respectively.

3. The display device of claim 1, wherein

the data driver receives the first viewpoint image data signal corresponding to the first viewpoint image display period to generate a plurality of first viewpoint data signals, the second viewpoint image data signal corresponding to the second viewpoint image display period to generate a plurality of second viewpoint data signals, and the black image data signal corresponding to the black image display period to generate a plurality of black data signals.

4. The display device of claim 3, wherein

the first viewpoint image display period includes a plurality of first sub-frames,

the scan driver transmits the scan signals corresponding to the plurality of first sub-frames to the corresponding scan lines, and

the data driver supplies the plurality of first viewpoint data signals to the plurality of data lines at a viewpoint where the corresponding scan signals are transmitted to the corresponding scan lines.

5. The display device of claim 3, wherein

the second viewpoint image display period includes a plurality of second sub-frames,

the scan driver transmits the scan signals corresponding to the plurality of second sub-frames to the corresponding scan lines, and

the data driver supplies the plurality of second viewpoint data signals to the plurality of data lines at a viewpoint where the corresponding scan signals are transmitted to the corresponding scan lines.

6. The display device of claim 3, wherein

the black image display period includes a plurality of black sub-frames,

the scan driver transmits the scan signals corresponding to the plurality of black sub-frames to the corresponding scan lines, and

the data driver supplies the plurality of black data signals to the plurality of data lines at a viewpoint where the corresponding scan signals are transmitted to the corresponding scan lines.

7. The display device of claim 1, wherein

the one frame period is divided into a plurality of sub-frames,

the first viewpoint image data signal corresponding to the first viewpoint image display period is supplied during at least two first sub-frame periods among the plurality of sub-frames, the second viewpoint image data signal corresponding to the second viewpoint image display period is supplied during at least two second sub-frame periods among the plurality of sub-frames, and

a sequence wherein at least two scan signals corresponding to the at least two first sub-frames are transmitted, is the same as a sequence wherein at least two scan signals corresponding to the at least two second sub-frames are transmitted.

8. The display device of claim 7, wherein

the at least two first sub-frames and the at least two second sub-frames respectively include at least one blank sub-frame where the data driver supplies the black image data signal for not emitting light of the pixel to the corresponding data line among the plurality of data lines.

9. The display device of claim 7, wherein

the black image data signal corresponding to the black image display period is supplied during at least two black sub-frame periods among the plurality of sub-frames, and

a sequence wherein the at least two scan signals corresponding to the black sub-frame are transmitted, is the same as a sequence wherein at least two scan signals corresponding to the at least two first sub-frames or the at least two second sub-frames are transmitted.

10. The display device of claim 9, wherein

the black image display period is longer than a longest sub-frame period among the at least two first sub-frame periods or the at least two second sub-frame periods.

11. The display device of claim 9, wherein

the sequence wherein the at least two scan signals corresponding to at least two black sub-frames are transmitted is the same as

the sequence wherein the at least two scan signals corresponding to a plurality of sub-frames included from an initial viewpoint among at least two first sub-frame periods or the at least two second sub-frame periods to the viewpoint corresponding to the at least two black sub-frame periods are transmitted.

12. The display device of claim 1, wherein

the one frame period is divided into the first viewpoint image display period, the second viewpoint image display period, and the black image display period, and the black image display period is started at a viewpoint where the first viewpoint image display period and the second viewpoint image display period are finished.

13. A method of driving a display device in which a plurality of pixels are included, wherein one frame period is divided into a first viewpoint image display period, a second viewpoint image display period, and a black image display period, the first viewpoint image display period including a plurality of first sub-frames, the second viewpoint image display period including a plurality of second sub-frames, and the black image display period including a plurality of black sub-frames, the method comprising:

generating and supplying a first viewpoint image data signal, a second viewpoint image data signal, and a black image data signal respectively corresponding to the first viewpoint image display period, the second viewpoint image display period, and the black image display period;

light-emitting the plurality of pixels during the plurality of first sub-frames according to the first viewpoint image data signal;

not light-emitting the plurality of pixels during the plurality of black sub-frames according to the black image data signal;

light-emitting the plurality of pixels during the plurality of second sub-frames according to the second viewpoint image data signal; and

not light-emitting the plurality of pixels during the plurality of black sub-frames according to the black image data signal,

wherein the black image display period is shorter than the first viewpoint image display period and the second viewpoint image display period.

14. The method of claim 13, wherein

the first viewpoint image data signal and the second viewpoint image data signal are a left eye image data signal and a right eye image data signal, respectively.

15. The method of claim 13, wherein

the black image data signal corresponding to the black image display period does not light-emit the plurality of pixels.

16. The method of claim 13, wherein in the generating and the supplying of the first viewpoint image data signal, the second viewpoint image data signal, and the black image data signal:

a timing controller of the display device generates the first viewpoint image data signal, the second viewpoint image data signal, and the black image data signal, and supplies the first viewpoint image data signal, the second viewpoint image data signal, and the black image data signal to a data supply unit of the display device; and

the data supply unit respectively receives the first viewpoint image data signal to generate a plurality of first viewpoint data signals, the second viewpoint image data signal to generate a plurality of second viewpoint data signals, and the black image data signal to generate a plurality of black data signals.

17. The method of claim 16, wherein the plurality of first viewpoint data signals are supplied to a plurality of data lines connected to a data driver at a viewpoint where a scan driver of the display device transmits scan signals corresponding to the plurality of first sub-frames to corresponding scan lines.

18. The method of claim 16, wherein the plurality of second viewpoint data signals are supplied to a plurality of data lines connected to a data driver at a viewpoint where a scan driver of the display device transmits scan signals corresponding to the plurality of second sub-frames to corresponding scan lines.

19. The method of claim 16, wherein the plurality of black data signals are supplied to a plurality of data lines connected to a data driver at a viewpoint where a scan driver of the display device transmits scan signals corresponding to the plurality of black sub-frames to corresponding scan lines.

20. The method of claim 13, wherein

the first viewpoint image data signal is supplied during the plurality of first sub-frames, the second viewpoint image data signal is supplied during the plurality of second sub-frames, and the black image data signal is supplied during the plurality of black sub-frames,

a sequence wherein a plurality of scan signals corresponding to the plurality of first sub-frames are transmitted, is the same as a sequence wherein a plurality of scan signals corresponding to the plurality of second sub-frames are transmitted.

21. The method of claim 20, wherein

the plurality of first sub-frames and the plurality of second sub-frames respectively include at least one blank sub-frame in which a data driver of the display device supplies a black data signal not light-emitting the pixel to the corresponding data line among the plurality of data lines.

22. The method of claim 20, wherein

a sequence in which a plurality of scan signals corresponding to the plurality of black sub-frames are transmitted, is the same as a sequence in which a plurality of scan signals corresponding to the plurality of first sub-frames or the plurality of second sub-frames are transmitted.

23. The method of claim 20, wherein

a sequence in which a plurality of scan signals corresponding to the plurality of black sub-frames are transmitted is the same as a sequence in which a plurality of scan signals corresponding to a plurality of sub-frames included from an initial viewpoint among the plurality of first sub-frames or the plurality of second sub-frames to a viewpoint corresponding to the plurality of black sub-frames are transmitted.

24. The method of claim 20, wherein

the plurality of black sub-frames are longer than a longest sub-frame period among the plurality of first sub-frames and the plurality of second sub-frames.

25. A display device comprising:

a display unit including a plurality of pixels connected to scan lines and data lines;

a scan driver supplying a scan signal to the scan lines and driving the scan lines;

a data driver supplying a data signal to the data lines and driving the data lines; and

a timing controller controlling the scan driver and the data driver, and generating an image data signal, corresponding to a black image display period during a predetermined period from a viewpoint when a first image display period and a second image display period are completed, as a black image data signal, wherein the black image data signal is the image data signal in which the pixels do not emit light, and wherein the black image display period is shorter than the first image display period and the second image display period.

26. The display device of claim 25, wherein the image data signal corresponding to the first image display period and the image data signal corresponding to the second image display period are a left eye image data signal and a right eye image data signal, respectively.

27. The display device of claim 25, wherein the data driver receives the first image data signal corresponding to the first image display period to generate a plurality of first data signals, the second image data signal corresponding to the second image display period to generate a plurality of second data signals, and the black image data signal corresponding to the black image display period to generate a plurality of black data signals.