Display device having a plurality of pixel areas

Patent metadata

Field	Value
Publication number	US-10614745-B2
Application number	US-201715804952-A
Country	US
Kind code	B2
Filing date	Nov 6, 2017
Priority date	Dec 7, 2016
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

A display device includes a pixel unit including first pixels in a first pixel area, second pixels in a second pixel area, and third pixels in a third pixel area; a first scan driver including first multiplexers configured to operate in response to a first mode and a second mode different from the first mode, and to supply first scan signals to first scan lines connected to the first pixels; a second scan driver configured to supply second scan signals to second scan lines connected to the second pixels; and a third scan driver including second multiplexers configured to operate in response to the first mode and the second mode, and to supply third scan signals to third scan lines connected to the third pixels.

First claim

What is claimed is:

1. A display device, comprising:
a pixel unit including first pixels in a first pixel area, second pixels in a second pixel area, and third pixels in a third pixel area;
a first scan driver including first multiplexers configured to operate in response to a first mode and a second mode different from the first mode, and to supply first scan signals to first scan lines connected to the first pixels;
a second scan driver configured to supply second scan signals to second scan lines connected to the second pixels; and
a third scan driver including second multiplexers configured to operate in response to the first mode and the second mode, and to supply third scan signals to third scan lines connected to the third pixels,
wherein the second pixel area is between the first and third pixel areas and a size of a viewing area formed by the first, second, and third pixel areas in the first mode is different than the size of the viewing area in the second mode, and
wherein in the first mode, a pulse width of each of the first scan signals and the third scan signals is greater than a pulse width of each of the second scan signals.

2. The display device of claim 1 , wherein the first scan driver further comprises first scan stages connected to the first scan lines, respectively, and
the first scan stages receive output signals from the first multiplexers.

3. The display device of claim 2 , wherein the third scan driver further comprises third scan stages connected to the third scan lines, respectively, and
the third scan stages receive output signals from the second multiplexers.

4. The display device of claim 3 , wherein each of the first multiplexers includes a first switch configured to be turned on in the first mode and a second switch configured to be turned on in the second mode.

5. The display device of claim 4 , wherein the second switch of a 1st first multiplexer of the first multiplexers is configured to receive a first start signal and second switches of remaining first multiplexers are configured to receive output signals from first scan stages located in a previous horizontal line.

6. The display device of claim 4 , wherein the first switch of a last first multiplexer is configured to receive a second start signal and first switches of remaining first multiplexer are configured to receive a first sub-start signal.

7. The display device of claim 6 , wherein the first sub-start signal is simultaneously supplied to the first scan stages in the first mode.

8. The display device of claim 7 , wherein the first scan signals are simultaneously supplied to first scan lines located in odd horizontal lines, and
the first scan signals are simultaneously supplied to first scan lines located in even horizontal lines.

9. The display device of claim 8 , wherein each of the second multiplexers includes a first switch configured to be turned on in the first mode and a second switch configured to be turned on in the second mode.

10. The display device of claim 9 , wherein first switches of the second multiplexers are configured to receive a second sub-start signal, and
second switches of the second multiplexers are configured to receive output signals from scan stages located in a previous horizontal line.

11. The display device of claim 10 , wherein the second sub-start signal is simultaneously supplied to the third scan stages in the first mode.

12. The display device of claim 11 , wherein the third scan signals are simultaneously supplied to the scan lines located in the odd horizontal lines, and
third scan signals are simultaneously supplied to third scan lines located in the even horizontal lines.

13. The display device of claim 12 , further comprising:
a first emission driver including third multiplexers configured to operate in response to the first mode and the second mode, and to supply first emission signals to first emission lines connected to the first pixels;
a second emission driver configured to supply second emission signals to second emission lines connected to the second pixels; and
a third emission driver including fourth multiplexers configured to operate in response to the first mode and the second mode, and to supply third emission signals to third emission lines connected to the third pixels.

14. The display device of claim 13 , wherein the first emission driver further comprises first emission stages connected to the first emission lines, respectively, and
the first emission stages are configured to receive output signals from the third multiplexers.

15. The display device of claim 14 , wherein the third emission driver further comprises third emission stages connected to the third emission lines, respectively, and
the third emission stages are configured to receive output signals from the fourth multiplexers.

16. The display device of claim 15 , wherein each of the third multiplexers and the fourth multiplexers includes a first switch configured to be turned on in the first mode and a second switch configured to be turned on in the second mode.

17. The display device of claim 16 , wherein the second switch of a 1st third multiplexer of the third multiplexers is configured to receive a third start signal, and second switches of remaining third multiplexers are configured to receive output signals from first emission stages located in the previous horizontal line.

18. The display device of claim 17 , wherein the first switch of a last third multiplexer is configured to receive a fourth start signal and first switches of remaining third multiplexers are configured to receive a third sub-start signal.

19. The display device of claim 18 , wherein the third sub-start signal is simultaneously supplied to the first emission stages in the first mode.

20. The display device of claim 19 , wherein in the first mode, the first emission signals are simultaneously supplied to first emission lines located in odd horizontal lines, and
the first emission signals are simultaneously supplied to first emission lines located in even horizontal lines.

21. The display device of claim 16 , wherein first switches of the fourth multiplexers are configured to receive a fourth sub-start signal, and
second switches of the fourth multiplexers are configured to receive output signals from emission stages located in the previous horizontal line.

22. The display device of claim 21 , wherein the fourth sub-start signal is simultaneously supplied to the third emission stages in the first mode.

23. The display device of claim 22 , wherein in the first mode, the third emission signals are simultaneously supplied to third emission lines located in odd horizontal lines, and
the third emission signals are simultaneously supplied to third emission lines located in even horizontal lines.

24. The display device of claim 13 , wherein the first emission driver, the second emission driver and the third scan driver are configured to cause the first pixel area, the second pixel area and the third pixel area to sequentially emit light during a single frame period in the second mode.

25. The display device of claim 13 , wherein the first emission driver, the second emission driver and the third scan driver are configured to cause the second pixel area to emit light after the first pixel area and the third pixel area emit light during a single frame period in the first mode.

26. The display devic

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jae Sic
• Byun Min Woo
• Noh Jae Du
• Woo Min Kyu
• Cho Seung Yeon

Classifications

• G02B2027/0123

  comprising devices increasing the field of view · CPC title

• G09G3/2092 Primary

  Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165) · CPC title

• G09G2340/0442

  Handling or displaying different aspect ratios, or changing the aspect ratio · CPC title

• G09G2320/02

  Improving the quality of display appearance · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title