ORGANIC LIGHT EMITTING DIODE DISPLAY

• US 20160268352A1
• Filed: 03/09/2016
• Published: 09/15/2016
• Est. Priority Date: 03/10/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: JOO, Hye Jin, YOON, Hyo Yul, HONG, Jong Ho, CHOI, Won IL, PARK, Won Sang, KIM, Mu Gyeom, MYEONG, Man Sik
• Granted Patent: US 9,799,708 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01L 29/08 with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/353 characterised by the geometrical arrangement of the RGB subpixels
• CPC Class Codes: H10K 59/88 Dummy elements, i.e. elements having non-functional features
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

An organic light emitting diode display includes a stretchable substrate, a plurality of pixel forming plates, first and second pixels, and a cut-out groove. The pixel forming plates are on the substrate and spaced apart from each other. The first and second pixels are on respective first and second pixel forming plates of the plurality of the pixel forming plates adjacent in a first direction. The first and second pixel forming plates are connected by a first bridge. The cut-out groove are in the first and second pixel forming plates and adjacent to an area connected to the first bridge.

Claims

1. An organic light emitting diode display, comprising:

a stretchable substrate;

a plurality of pixel forming plates on the substrate and spaced apart from each other; and

first and second pixels on respective first and second pixel forming plates of the plurality of the pixel forming plates adjacent in a first direction, the first and second pixel forming plates connected by a first bridge, and

a cut-out groove in the first and second pixel forming plates and adjacent to an area connected to the first bridge.

2. The display as claimed in claim 1, wherein the first bridge is curved in a second direction crossing the first direction.

3. The display as claimed in claim 2, wherein the first bridge has a predetermined width.

4. The display as claimed in claim 2, wherein the first bridge has a predetermined radius of curvature.

5. The display as claimed in claim 2, wherein the first bridge is upwardly curved along the second direction.

6. The display as claimed in claim 5, wherein the first pixel forming plate includes:

a first main supporting plate;

a first wing plate on one lateral surface of the first main supporting plate, wherein one side end portion of the first wing plate is connected to the first bridge;

a second wing plate on another lateral surface of the first main supporting plate and adjacent to the one side end portion of the first wing plate; and

a first cut-out groove between one side end portion of the second wing plate and the first bridge.

7. The display as claimed in claim 6, wherein the second pixel forming plate includes:

a second main supporting plate;

a third wing plate on one lateral surface of the second main supporting plate to face the first wing plate of the first pixel forming plate, one side end portion of the third wing plate connected to the first bridge;

a fourth wing plate on another lateral surface of the second main supporting plate and adjacent to the one side end portion of the third wing plate; and

a second cut-out groove between one side end portion of the fourth wing plate and the first bridge.

8. The display as claimed in claim 7, further comprising:

a base layer including;

a third pixel forming plate adjacent to the first pixel forming plate in the second direction;

a third pixel on the third pixel forming plate; and

a second bridge connecting the first and third pixel forming plates.

9. The display as claimed in claim 8, wherein the third pixel forming plate includes:

a third main supporting plate;

a fifth wing plate on one lateral surface of the third main supporting plate to face the second wing plate of the first pixel forming plate, one side end portion of the fifth wing plate connected to the second bridge; and

a sixth wing plate on another lateral surface of the third main supporting plate to be adjacent to the one side end portion of the fifth wing plate, wherein the second bridge is connected to another end portion of the second wing plate of the first pixel forming plate, and

a third cut-out groove between one side end portion of the sixth wing plate and the second bridge.

10. The display as claimed in claim 9, further comprising:

a plurality of first to third wires on the first pixel forming plate and connected to the first pixel, wherein the first wires are connected to a second pixel of the second pixel forming plate through an upper side of the first bridge.

11. The display as claimed in claim 10, wherein the first wires extend in a length direction of the first bridge and are disposed in an outer side of a center line of the first bridge passing through a center of the first bridge.

12. The display as claimed in claim 10, further comprising:

a plurality of dummy wires on the first bridge and disposed above or below the first wires to overlap a portion of the first wires, wherein strain on the dummy wires is greater than that on the first wires.

13. The display as claimed in claim 12, wherein the dummy wires extend in a length direction of the first bridge and are disposed in an inner side of a center line of the first bridge passing through a center of the first bridge.

14. The display as claimed in claim 12, wherein lengths of the dummy wires decrease from an inner side of the first bridge toward an outer side thereof.

15. The display as claimed in claim 10, further comprising:

a sensing thin film transistor on the respective pixel forming plates and connected to at least one of the first to third wires to measure strain on the at least one of the first to third wires.

16. The display as claimed in claim 10, wherein the first wires include a plurality of gate lines.

17. The display as claimed in claim 10, wherein the second bridge is curved in the first direction.

18. The display as claimed in claim 17, wherein the second bridge has a predetermined width.

19. The display as claimed in claim 17, wherein the second bridge has a predetermined radius of curvature.

20. The display as claimed in claim 17, wherein the second and third wires are connected to a third pixel on the third pixel forming plate through an upper side of the second bridge.

21. The display as claimed in claim 20, wherein, based on a center line of the second bridge extending in a length direction of the second bridge and passing through a center of the second bridge:

a portion of the second and third wires that have strain in a first range are disposed in an outer side of the center line, and

another portion of the second and third wires that have strain in a second range are disposed in an inner side of the center line, the second range greater than the first range.

22. The display as claimed in claim 21, wherein the second wires include a plurality of data lines and the third wires include a plurality of driving voltage lines.

23. The display as claimed in claim 2, wherein the first bridge is downwardly curved along the second direction.

24. The display as claimed in claim 23, wherein the first pixel forming plate includes:

a first main supporting plate;

a first wing plate on one lateral surface of the first main supporting plate; and

a second wing plate on another lateral surface of the first main supporting plate, wherein one side end portion of the second wing plate is connected to the first bridge, and wherein a first cut-out groove is between one side end portion of the first wing plate adjacent to the one side end portion of the second wing plate and the first bridge.

25. The display as claimed in claim 24, wherein the second pixel forming plate includes:

a second main supporting plate;

a third wing plate formed on one lateral surface of the second main supporting plate to face the first wing plate of the first pixel forming plate; and

a fourth wing plate formed on another lateral surface of the second main supporting plate, wherein one side end portion of the fourth wing plate is connected to the first bridge, and wherein a second cut-out groove is between one side end portion of the third wing plate adjacent to the one side end portion of the fourth wing plate and the first bridge.

26. The display as claimed in claim 1, further comprising:

a plurality of the first pixels, and

a plurality of the second pixels.

27. The display as claimed in claim 26, wherein each of the first pixels and the second pixels includes at least one pixel circuit.

28. The display as claimed in claim 1, wherein each of the first pixels and the second pixels includes a plurality of subpixels.

29. The display as claimed in claim 1, wherein each of the pixel forming plates has substantially a polygonal shape.

30. An organic light emitting diode display, comprising:

a stretchable substrate;

a plurality of pixel forming plates on the substrate and spaced apart from each other; and

first and second pixels on respective first and second pixel forming plates of the plurality of the pixel forming plates adjacent in a first direction; and

first to third wires on the first pixel forming plate connected to the first pixels, wherein the first and second pixel forming plates are connected by a first bridge, and wherein the first wires are connected to the second pixels of the second pixel forming plate through an upper side of the first bridge.

31. The display as claimed in claim 30, wherein the first bridge has a predetermined width and is curved in a second direction crossing the first direction.

32. The display as claimed in claim 31, wherein the first bridge has a predetermined radius of curvature.

33. The display as claimed in claim 31, wherein the first wires extend in a length direction of the first bridge and are disposed in an outer side of a center line of the first bridge passing through a center of the first bridge.

34. The display as claimed in claim 31, further comprising:

a plurality of dummy wires on the first bridge and above or below the first wires overlapping a portion of the first wires, wherein the dummy wires extend in a length direction of the first bridge and are disposed in an inner side of a center line of the first bridge passing through a center of the first bridge, and wherein strain on the dummy wires is greater than strain on the first wires.

35. The display as claimed in claim 30, further comprising:

a base layer including;

a third pixel forming plate adjacent to the first pixel forming plate in a second direction crossing the first direction, and

a second bridge connecting the first and third pixel forming plates, wherein the second and third wires are connected to third pixels on the third pixel forming plate through an upper side of the second bridge.

36. The display as claimed in claim 35, wherein the second bridge has a predetermined width and is curved in the first direction.

37. The display as claimed in claim 36, wherein the second bridge has a predetermined radius of curvature.

38. The display as claimed in claim 35, wherein, based on a center line of the second bridge extending in a length direction of the second bridge and passing through a center of the second bridge:

a portion of the second and third wires have strain in a first range and are disposed in an outer side of the center line, and

another portion of the second and third wires have strain in a second range and are disposed in an inner side of the center line, the second range greater than the first range.