DISPLAY DEVICE AND FABRICATING METHOD

• US 20170229429A1
• Filed: 12/10/2015
• Published: 08/10/2017
• Est. Priority Date: 08/04/2015
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: HE, XIAOLONG, ZHANG, BIN, SHU, SHI, YAO, QI, CAO, ZHANFENG, YOO, SEONG YEOL
• Granted Patent: US 9,966,365 B2
• Time in Patent Office: Days
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 2933/0033 relating to semiconductor body packages
• CPC Class Codes: H01L 2933/0041 relating to wavelength conversion elements
• CPC Class Codes: H01L 2933/0058 relating to optical field-shaping elements
• CPC Class Codes: H01L 2933/0075 relating to heat extraction or cooling elements
• CPC Class Codes: H01L 33/502 Wavelength conversion materials
• CPC Class Codes: H01L 33/505 characterised by the shape, e.g. plate or foil
• CPC Class Codes: H01L 33/58 Optical field-shaping elements
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: H01L 33/644 in intimate contact or integrated with parts of the device other than the semiconductor body

Abstract

In accordance with various embodiments, the disclosed subject matter provides a display device and a related fabricating method. In some embodiments, the display device comprises: a substrate and a plurality of display units on the substrate, wherein each of the plurality of display units comprises: a first color sub-pixel, comprising a first quantum dot material and a first light source, wherein the first color sub-pixel is configured to provide a first color light by stimulating the first quantum dot material with the first light source; and a second color sub-pixel, comprising a second quantum dot material and a second light source, wherein the second color sub-pixel is configured to provide a second color light by stimulating the second quantum dot material with the second light source.

Claims

1-22. -22. (canceled)

23. A display device, comprising:

a substrate; and

a plurality of display units on the substrate,

wherein each of the plurality of display units comprises;

a first color sub-pixel, comprising a first quantum dot material and a first light source, wherein the first color sub-pixel is configured to provide a first color light by stimulating the first quantum dot material with the first light source; and

a second color sub-pixel, comprising a second quantum dot material and a second light source, wherein the second color sub-pixel is configured to provide a second color light by stimulating the second quantum dot material with the second light source.

24. The display device of claim 23, wherein the first quantum dot material and the second quantum dot material comprise nanoparticles made of Group II-VI or Group III-V elements.

25. The display device of claim 23, wherein the first quantum dot material and the second quantum dot material are same quantum dot material but have different sizes.

26. The display device of claim 23, wherein:

the first color light is red light and the second color light is green light;

the first quantum dot material comprises nanoparticles of CuInSe or InP; and

the second quantum dot material comprises nanoparticles of CuInS.

27. The display device of claim 23, wherein each of the plurality of display units further comprises a third color sub-pixel that comprises a third light source and a third quantum dot material, wherein the third subunit is configured to provide a third color light by stimulating the third quantum dot material with the third light source.

28. The display device of claim 27, wherein:

the third color light is blue light;

the third light source is a ultraviolet (UV) light source; and

the third quantum dot material comprises nanoparticles of ZnS or CdS.

29. The display device of claim 23, wherein each of the plurality of display units further comprises a third color sub-pixel that comprises a third light source and a transparent material, wherein the transparent material transmits a third color light emitting from the third light source.

30. The display device of claim 29, wherein the first light source, the second light source and the third light source are blue LED light sources.

31. The display device of claim 27, wherein:

each of the plurality of display units further comprises isolating channels for optical isolating the first color sub-pixel, the second color sub-pixel and the third color sub-pixel from each other; and

each isolating channels have reflecting inner surfaces for reflecting light.

32. The display device of claim 23, wherein each of the plurality of display units further comprises a light filter layer.

33. The display device of claim 23, further comprising:

a driving circuit connecting with the plurality of light sources; and

a heat sink plate located on the driving circuit.

34. A method for fabricating a display device, the method comprising:

providing a substrate; and

setting a plurality of light sources on the substrate;

forming a plurality of first color sub-pixels by forming a first quantum dot material associated with a first subset of the plurality of light sources; and

forming a plurality of second color sub-pixels by forming a second quantum dot material associated with a second subset of the plurality of light sources;

wherein each of the plurality of first color sub-pixels can provide a first color light by stimulating the first quantum dot material with one corresponding light source in the first subset of the plurality of light sources; and

wherein each the plurality of the second color sub-pixels can provide a second color light by stimulating the second quantum dot material with one corresponding light source in the second subset of the plurality of light sources.

35. The method of claim 34, wherein:

the first quantum dot material comprise nanoparticles of a material in a first size range; and

the second quantum dot material comprise nanoparticles of the material in a second size range.

36. The method of claim 34, further comprising:

forming a plurality of third color sub-pixels by forming a third quantum dot material associated with a third subset of the plurality of light sources;

wherein each of the plurality of third color sub-pixels can provide a third color light by stimulating the third quantum dot material with one corresponding light source in the third subset of the plurality of light sources.

37. The method of claim 34, further comprising:

forming a plurality of third color sub-pixels by forming a transparent material associated with a third subset of the plurality of light sources;

wherein each of the plurality of third color sub-pixels can provide a third color light by transmits a third color light emitting from one corresponding light source in the third subset of the plurality of light sources through the transparent material.

38. The method of claim 34, further comprising:

forming a plurality of isolating channels to isolate the plurality of first color sub-pixels, and the plurality of second color sub-pixels from each other; and

forming reflecting inner surfaces for each isolating channel.

39. The method of claim 34, further comprising setting a driving circuit connecting with the plurality of light sources.

40. The method of claim 39, further comprising setting a heat sink plate located on the driving circuit.

41. The method of claim 38, further comprising forming a light filter layer on the plurality of isolating channels.

42. The method of claim 38, further comprising forming a cover layer on the plurality of isolating channels.