Quantum Dot Light Enhancement Substrate and Lighting Device Including Same

Patent metadata

Field	Value
Publication number	US-2016351749-A1
Application number	US-201615055827-A
Country	US
Kind code	A1
Filing date	Feb 29, 2016
Priority date	Jul 23, 2007
Publication date	Dec 1, 2016
Grant date	—

Abstract

A component including a substrate, at least one layer including a color conversion material comprising quantum dots disposed over the substrate, and a layer comprising a conductive material (e.g., indium-tin-oxide) disposed over the at least one layer. (Embodiments of such component are also referred to herein as a QD light-enhancement substrate (QD-LES).) In certain preferred embodiments, the substrate is transparent to light, for example, visible light, ultraviolet light, and/or infrared radiation. In certain embodiments, the substrate is flexible. In certain embodiments, the substrate includes an outcoupling element (e.g., a microlens array). A film including a color conversion material comprising quantum dots and a conductive material is also provided. In certain embodiments, a component includes a film described herein. Lighting devices are also provided. In certain embodiments, a lighting device includes a film described herein. In certain embodiments, a lighting device includes a component described herein.

First claim

1 - 67 . (canceled)

68 . A lighting device including:
a component comprising a substrate comprising a material that is transparent to light within a predetermined range of wavelengths, a color conversion material comprising quantum dots disposed over a predetermined region of a surface of the substrate, wherein the substrate further includes one or more outcoupling features on a surface of the substrate opposite the color conversion material, and a conductive material disposed over at least a portion of the color conversion material, the conductive material being transparent to light within a second predetermined range of wavelengths, the conductive material forming a first electrode of the device; an emissive layer disposed over at least a portion of the conductive material, wherein the emissive layer comprises a material capable of emitting blue light; and a second electrode disposed over the emissive layer.

69 . A lighting device in accordance with claim 68 wherein the color conversion material including quantum dots is included in a layer comprising a predetermined arrangement of features disposed over a predetermined region of a surface of the substrate.

70 . A lighting device in accordance with claim 68 wherein the color conversion material including quantum dots is included in a layered arrangement including two or more layers disposed over a predetermined region of a surface of the substrate.

71 . A lighting device in accordance with claim 68 wherein the device further includes one or more charge transport layers between the electrodes.

72 . A lighting device in accordance with claim 68 wherein the device further includes one or more charge injection layers between the electrodes.

73 . A lighting device in accordance with claim 68 wherein the device comprises an OLED.

74 . A lighting device in accordance with claim 68 wherein the emissive layer comprises quantum dots.

75 . A lighting device in accordance with claim 68 wherein the device comprises a thin film light emitting device.

76 . A lighting device in accordance with claim 68 wherein the device comprises a thin film electroluminescent device.

77 - 87 . (canceled)

88 . A lighting device in accordance with claim 70 wherein the films are formed in order with the first layer being nearest the conductive material.

89 - 100 . (canceled)

101 . A light emitting device in accordance with claim 69 wherein—a first portion of the features includes optically transparent scatterers or non-scattering material, a second portion of the features includes quantum dots capable of emitting red light, and a third portion of the features includes quantum dots capable of emitting green light.

102 . A light emitting device in accordance with claim 69 wherein—a first portion of the features includes optically transparent scatterers or non-scattering material, and a second portion of the features includes quantum dots capable of emitting yellow light.

103 . A light emitting device in accordance with claim 70 wherein the layered arrangement includes a first film including quantum dots capable of emitting red light, and a second film including quantum dots capable of emitting green light, and a third film including scatterers or non-scattering material to outcouple light.

104 . A light emitting device in accordance with claim 70 wherein the layered arrangement includes a first film including quantum dots capable of emitting yellow light, a second film including scatterers or non-scattering material to outcouple light.

Assignees

• Qd Vision Inc

Inventors

• Coe-Sullivan Seth
• Kazlas Peter T

Classifications

• H10K59/877

  comprising scattering means · CPC title

• H10H20/812

  within the light-emitting regions, e.g. having quantum confinement structures · CPC title

• H05B33/145 Primary

  Arrangements of the electroluminescent material · CPC title

• H01L51/56

  Electricity · mapped topic

• H01L51/5088

  Electricity · mapped topic