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WO2018190827A1 - Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte - Google Patents

Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte Download PDF

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Publication number
WO2018190827A1
WO2018190827A1 PCT/US2017/027209 US2017027209W WO2018190827A1 WO 2018190827 A1 WO2018190827 A1 WO 2018190827A1 US 2017027209 W US2017027209 W US 2017027209W WO 2018190827 A1 WO2018190827 A1 WO 2018190827A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight unit
combinations
phosphor
quantum dot
remote phosphor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/027209
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English (en)
Inventor
James Edward Murphy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to KR1020197033447A priority Critical patent/KR102380421B1/ko
Priority to PCT/US2017/027209 priority patent/WO2018190827A1/fr
Priority to EP17723171.9A priority patent/EP3609979A1/fr
Priority to CN201780090701.0A priority patent/CN110914382A/zh
Priority to CA3063060A priority patent/CA3063060A1/fr
Publication of WO2018190827A1 publication Critical patent/WO2018190827A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/61—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
    • C09K11/615—Halogenides
    • C09K11/616—Halogenides with alkali or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
    • C09K11/881—Chalcogenides
    • C09K11/883—Chalcogenides with zinc or cadmium

Definitions

  • FIG. 1 A illustrates a conventional liquid crystal display (LCD) with an edge lit backlight configuration.
  • FIG. IB illustrates a direct lit backlight configuration for the conventional LCD.
  • FIG. 2 illustrates a backlight unit or module 200 according to the present invention.
  • FIG. 3 illustrates backlight unit according to the present invention.
  • backlight units including a remote phosphor package according to the present invention exhibit efficiency improvements over conventional display backlight units due to the efficient use of primary light, resulting in a reduction in wasted light energy.
  • the remote phosphor package includes a green emitting quantum dot material and a Mn 4+ doped phosphor of formula I, dispersed in a host matrix
  • A is Li, Na, K, Rb, Cs, or combinations thereof;
  • M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or combinations thereof;
  • x is an absolute value of a charge of the [MF y ] ion;
  • y is 5, 6 or 7.
  • FIG. 1 A illustrates a conventional liquid crystal display (LCD) with an edge lit backlight configuration.
  • LCD 100 A includes a primary light source or backlight source 102, light guide panel 106, and a LCD panel 120.
  • the LCD 100 uses the LCD panel 120 with control electronics and the backlight source 102 to produce color images.
  • the backlight source 102 provides white light.
  • the liquid crystal display panel 120 includes color filters 122 arranged in subpixels, such as a red color filter, a green color filter, and a blue color filter.
  • the red, green, and blue filters 122 transmit a light having a specific wavelength of white light incident from the backlight sourcel02.
  • the filters 122 transmit wavelengths of light corresponding to the color of each filter, and absorb other wavelengths.
  • the LCD panel 120 also includes a front polarizer 118, a rear polarizerl 14, a thin film transistor 126, and liquid crystal 116 as well as electrodes (not shown).
  • the color filters 122 are positioned between the liquid crystal 116 and the front polarizer 118.
  • the thin film transitor 126 is positioned between the liquid crystal 116 and the rear polarizer 114.
  • Each pixel has a corresponding transistor or switch for controlling voltage applied to the liquid crystal 116.
  • the front and rear polarizers 118 and 114 may be set at right angles. Normally, the LCD panel 120 is opaque.
  • Backlight source 102 includes one or more blue LEDs and yellow phosphor pumped by the blue LEDs to emit white light for LCD 100.
  • the white light from the backlight source 102 travels toward light guide panel 106, through diffuser film 110 and prism 108 as well as double brightness enhanced film 124, which provides a uniform light backlight for the liquid crystal display panel 120.
  • the backlight source 102 may include a white LED that provides white light to the light guide panel 106.
  • the white LED may use a blue LED with broad spectrum yellow phosphor, or a blue LED with red and green phosphors.
  • FIG. IB illustrates a direct lit backlight configuration for the conventional LCD.
  • the main differences from the edge lit configuration 100B include different arrangement of a number of LEDs and absence of light guide panel 106. More specifically, the LEDs 102 are arranged to directly provide light to a diffuser plate 126, which is normally thicker than the diffuser film 110 and thus supports the diffuser film 110.
  • FIG. 2 illustrates a backlight unit or module 200 according to the present invention that includes light source 202, light guide panel 204, remote phosphor package 206, dichroic filter 210, and LCD panel 216.
  • Backlight unit 200 may also optionally include a prism 212 and a double brightness enhanced film 214.
  • the light source 202 is a blue emitting LED. To produce even lighting, blue light from the light source 202 first passes through light guide panel 204 which diffuses the blue light.
  • the LCD panel 216 also includes color filters arranged in subpixels, a front polarizer, a rear polarizer, and liquid crystal as well as electrodes, similar to the LCD panel 120 for the conventional LCD 100.
  • the double brightness enhanced film 214 is a reflective polarizer film which increases efficiency by repeatedly reflecting any unpolarized light back, which would otherwise be absorbed by the LCD's rear polarizer.
  • the double brightness enhanced film 214 is placed behind the liquid crystal display panel 216 without any other film in-between.
  • the double brightness enhanced film 214 may be mounted with its transmission axis substantially parallel to the transmission axis of the rear polarizer.
  • the double brightness enhanced film 214 helps recycle the white light 222 that would normally be absorbed by the rear polarizer (not shown) of the liquid crystal panel 216, and thus increases the brightness of the liquid crystal display panel 216.
  • a backlight unit may vary in configuration.
  • a direct lit configuration may be used, similar to the direct lit configuration shown in FIG. IB.
  • the prism 212 may also be removed or substituted by other brightness enhancement component in an alternative embodiment.
  • the double brightness enhanced film 214 may be removed in another embodiment.
  • remote phosphor package 206 includes particles 208 A of a complex fluoride phosphor of formula I and particles 208B of a green quantum dot material. It is "remote" in the sense that the primary light source and the phosphor material are separate elements, and the phosphor material is not integrated with the primary light source as a single element. Primary light is emitted from the primary light source and is travels through one or more external media to radiationally couple the LED light source to the QD-phosphor material.
  • Red-emitting phosphors based on complex fluoride materials activated by Mn 4+ such as those described in US 7,358,542, US 7,497,973, and US 7,648,649, absorb blue light strongly, and efficiently emit between about 610 nanometers and 635 nanometers with little deep red/NIR emission.
  • the complex fluoride phosphors of formula I have a host lattice containing a coordination center, surrounded by fluoride ions acting as ligands, and charge-compensated by counter ions (A) as necessary.
  • the coordination center is Si and the counter ion is K.
  • Complex fluorides are occasionally represented as a combination of simple, binary fluorides but such a representation does not indicate the coordination number for the ligands around the coordination center.
  • the square brackets (occasionally omitted for simplicity) indicate that the complex ion they encompass is a new chemical species, different from the simple fluoride ion.
  • the Mn 4+ dopant or activator acts as an additional coordination center, substituting a part of the coordination center, for example, Si, forming a luminescent center.
  • the host lattice (including the counter ions) may further modify the excitation and emission properties of the activator ion.
  • the counter ion A in formula I is Li, Na, K, Rb, Cs, or combinations thereof, and y is 6. In certain embodiments, A is Na, K, Rb, or combinations thereof.
  • the coordination center M in formula I is an element selected from the group consisting of Si, Ge, Ti, Zr, Hf, Sn, Al, Ga, In, Sc, Y, Bi, La, Gd, Nb, Ta, and combinations thereof. In certain embodiments, M is Si, Ge, Ti, or combinations thereof.
  • Examples of the phosphors of formula I include K2[SiF 6 ]:Mn 4+ , K 2 [TiF 6 ]:Mn 4+ , K 2 [SnF 6 ]:Mn 4+ , Cs 2 [TiF 6 ]:Mn 4+ , Rb 2 [TiF 6 ]:Mn 4+ , Cs 2 [SiF 6 ]:Mn 4+ , Rb 2 [SiF 6 ]:Mn 4+ , Na 2 [TiF 6 ]:Mn 4+ , Na 2 [ZrF 6 ]:Mn 4+ , K 3 [ZrF 7 ]:Mn 4+ , K 3 [BiF 7 ]:Mn 4+ , K 3 [YF 7 ]:Mn 4+ , K 3 [LaF 7 ]:Mn 4+ , K 3 [GdF 7 ]:Mn 4+ , K 3 [NbF 7 ]:Mn 4+ , K
  • the phosphor of formula I is K 2 [SiF6]:Mn 4+ .
  • QD materials for use in the remote phosphor package include at least one population of QDs capable of emitting green light upon excitation by a blue light source.
  • the QD wavelengths and concentrations can be adjusted to meet the optical performance required.
  • Preferred QD characteristics include high quantum efficiency (e.g., about 90% or greater), continuous and tunable emission spectrum, and narrow and sharp spectral emission, e.g., less than 40 nm, 30 nm or less, or 20 nm or less full width at half max (FWHM).
  • the green emitting quantum dot material may include a group II- VI compound, a group
  • Non-limiting examples of group II- VI compounds include CdSe, CdTe, CdS, ZnSe, ZnTe, ZnS, HgTe, HgS, HgSe, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnS, HgZnS, HgZnSTe, CdHgSeS, CdHgSeTe, C
  • Group III-V compounds may be selected from the group consisting of GaN, GaP, GaAs, AIN, AiP, AiAs, InN, InP, In As, GaNP, GaNAs, GaP As, A1NP, AIN As, AlPAs, InNP, InNAs, InPAs, GaAlNP, GaA!NAs, GaAIPAs, GalnNP, GalnNAs, GalnPAs, IiiAlNP, InAlNAs, InAlPAs, and combinations therof. Examples of group
  • IV compounds include Si, Ge, SiC, and SiGe.
  • group I-III-VI2 cha3copyrite-type compounds include CuInS2, CuInSe?., CuGaS?, CuGaSe 2 , AgInS2, AgInSe2, AgGaS?., AgGaSe?. and combinat ons thereof.
  • QDs for use in the remote package may be a core/shell QD, including a core, at least one shell coated on the core, and an outer coating including one or more ligands, preferably organic polymeric ligands.
  • Exemplary materials for preparing core-shell QDs include, but are not limited to, Si, Ge, Sn, Se, Te, B, C (including diamond), P, Co, Au, BN, BP, BAs, AIN, AIP, AlAs, AlSb, GaN, GaP, GaAs, GaSb, InN, InP, InAs, InSb, AIN, AIP, AlAs, AlSb, GaN, GaP, GaAs, GaSb, ZnO, ZnS, ZnSe, ZnTe, CdS, CdSe, CdSeZn, CdTe, HgS, HgSe, HgTe, BeS, BeSe, BeTe, MgS, MgSe
  • Exemplary core-shell QDs include, but are not limited to, CdSe/ZnS, CdSe/CdS, CdSe/CdS/ZnS, CdSeZn/CdS/ZnS, CdSeZn/ZnS, InP/ZnS, PbSe/PbS, PbSe/PbS, CdTe/CdS and CdTe/ZnS.
  • the QD materials typically include ligands conjugated to, cooperated with, associated with, or attached to their surface.
  • the QDs may include a coating layer comprising ligands to protect the QDs from environmental conditions including elevated temperatures, high intensity light, external gasses, and moisture, control aggregation, and allow for dispersion of the QDs in the matrix material.
  • a remote phosphor package according to the present invention may contain a narrow green emitting phosphor material instead of or in addition to a quantum dot material.
  • suitable green emitting phosphors include CdS:In, SrGa 2 S 4 :Eu, CaS0 4 :Bi, SrS:Mn, ZnS:Eu, and CaGa 2 S 4 :Eu.
  • the remote phosphor package material additionally includes a matrix material in which the QD-phosphor material is embedded or otherwise disposed.
  • Suitable matrix materials are transparent, non-yellowing, and chemically and optically compatible with the backlight unit components, including the QDs and any surrounding packaging materials or layers.
  • Preferred matrix materials have low oxygen and moisture permeability, exhibit high photo- and chemical- stability, exhibit favorable refractive indices, and adhere to the barrier or other layers adjacent the QD phosphor material, thus providing an air-tight seal to protect the QD-phosphor material.
  • Examples of matrix materials for use in QD phosphor material of the present invention include epoxies, acrylates, norborene, polyethylene, poly(vinyl butyral): poly (vinyl acetate), polyurea, polyurethanes; silicones and silicone derivatives including, but not limited to, amino silicone (AMS), polyphenylmethylsiloxane, polyphenylalkylsiloxane, polydiphenylsiloxane, polydialkylsiloxane, silsesquioxanes, fluorinated silicones, and vinyl and hydride substituted silicones; acrylic polymers and copolymers formed from monomers including, but not limited to, methylmethacrylate, butylmethacrylate, and laurylmethacrylate; styrene-based polymers such as polystyrene, amino polystyrene (APS), and poly(acrylonitrile ethylene styrene) (AES); polymers that
  • backlight unit 300 includes backplane 2, light guide panel 4, LED light source 6, mounting bracket 8, and a remote phosphor package in the form of a strip 10, mounted in the backplane 2.
  • the remote phosphor package 10 is mounted via mounting bracket 8 between light guide panel 4 and LED light source 6, whereby light emitting from the backlight source 6 is transmitted through composite material 10 and then enters the light guide plate 4.
  • the backlight unit may further include a bottom reflector plate 14 arranged between light guide panel 4 and the backplane 2 and an optical film assembly 16 arranged above the light guide plate 4.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Luminescent Compositions (AREA)
  • Led Device Packages (AREA)

Abstract

Un module de luminophore distant selon la présente invention comprend un matériau à points quantiques d'émission de lumière verte et un luminophore dopé par Mn4+ de Ax[MFy]:Mn4+ (formule I), dispersé dans une matrice hôte dans laquelle A,est Li, Na, K, Rb, Cs, ou des combinaisons de ceux-ci; M représente Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, ou des combinaisons de ceux-ci; x est une valeur absolue d'une charge de l'ion [MFy]; et y est 5, 6 ou 7.
PCT/US2017/027209 2017-04-12 2017-04-12 Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte Ceased WO2018190827A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020197033447A KR102380421B1 (ko) 2017-04-12 2017-04-12 적색선 방출 인광체 및 녹색 발광 양자점을 갖는 원격 인광체 패키지를 함유하는 디바이스
PCT/US2017/027209 WO2018190827A1 (fr) 2017-04-12 2017-04-12 Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte
EP17723171.9A EP3609979A1 (fr) 2017-04-12 2017-04-12 Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte
CN201780090701.0A CN110914382A (zh) 2017-04-12 2017-04-12 包含具有红线发射磷光体和绿光发射量子点的远程磷光体包的设备
CA3063060A CA3063060A1 (fr) 2017-04-12 2017-04-12 Dispositifs contenant un module de luminophore distant avec des luminophores emettant une ligne rouge et des points quantiques emettant une lumiere verte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2017/027209 WO2018190827A1 (fr) 2017-04-12 2017-04-12 Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte

Publications (1)

Publication Number Publication Date
WO2018190827A1 true WO2018190827A1 (fr) 2018-10-18

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PCT/US2017/027209 Ceased WO2018190827A1 (fr) 2017-04-12 2017-04-12 Dispositifs contenant un module de luminophore distant avec des luminophores émettant une ligne rouge et des points quantiques émettant une lumière verte

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EP (1) EP3609979A1 (fr)
KR (1) KR102380421B1 (fr)
CN (1) CN110914382A (fr)
CA (1) CA3063060A1 (fr)
WO (1) WO2018190827A1 (fr)

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US11254864B2 (en) 2020-04-14 2022-02-22 General Electric Company Films with narrow band emission phosphor materials
US12195655B2 (en) 2021-04-13 2025-01-14 Dolby Intellectual Property Licensing, Llc Uranium-based phosphors and compositions for displays and lighting applications
US12215265B2 (en) 2020-04-14 2025-02-04 Dolby Intellectual Property Licensing, Llc Green-emitting phosphors and devices thereof
US12230620B2 (en) 2020-09-01 2025-02-18 Dolby Intellectual Property Licensing, Llc Devices compatible with night vision equipment

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US7358542B2 (en) 2005-02-02 2008-04-15 Lumination Llc Red emitting phosphor materials for use in LED and LCD applications
US7497973B2 (en) 2005-02-02 2009-03-03 Lumination Llc Red line emitting phosphor materials for use in LED applications
US7648649B2 (en) 2005-02-02 2010-01-19 Lumination Llc Red line emitting phosphors for use in led applications
US20130335677A1 (en) * 2012-06-15 2013-12-19 Apple Inc. Quantum Dot-Enhanced Display Having Dichroic Filter
US20160093776A1 (en) * 2014-03-13 2016-03-31 General Electric Company Lighting apparatus including color stable red emitting phosphors and quantum dots
US20160312114A1 (en) * 2013-03-15 2016-10-27 General Electric Company Processes for preparing color stable red-emitting phosphors
WO2016186636A1 (fr) * 2015-05-18 2016-11-24 General Electric Company Procédé de fabrication de phosphores fluorés dopés au mn

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US9698314B2 (en) * 2013-03-15 2017-07-04 General Electric Company Color stable red-emitting phosphors
WO2015057930A1 (fr) * 2013-10-17 2015-04-23 Nanosys, Inc. Dispositifs à diodes électroluminescentes (del)
CN107250906A (zh) * 2015-03-23 2017-10-13 英特曼帝克司公司 光致发光彩色显示器

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US7358542B2 (en) 2005-02-02 2008-04-15 Lumination Llc Red emitting phosphor materials for use in LED and LCD applications
US7497973B2 (en) 2005-02-02 2009-03-03 Lumination Llc Red line emitting phosphor materials for use in LED applications
US7648649B2 (en) 2005-02-02 2010-01-19 Lumination Llc Red line emitting phosphors for use in led applications
US20130335677A1 (en) * 2012-06-15 2013-12-19 Apple Inc. Quantum Dot-Enhanced Display Having Dichroic Filter
US20160312114A1 (en) * 2013-03-15 2016-10-27 General Electric Company Processes for preparing color stable red-emitting phosphors
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Publication number Priority date Publication date Assignee Title
US11254864B2 (en) 2020-04-14 2022-02-22 General Electric Company Films with narrow band emission phosphor materials
US11312876B2 (en) 2020-04-14 2022-04-26 General Electric Company Ink compositions with narrow band emission phosphor materials
US11578225B2 (en) 2020-04-14 2023-02-14 General Electric Company Films with narrow band emission phosphor materials
US11781028B2 (en) 2020-04-14 2023-10-10 General Electric Company Ink compositions with narrow band emission phosphor materials
US12215265B2 (en) 2020-04-14 2025-02-04 Dolby Intellectual Property Licensing, Llc Green-emitting phosphors and devices thereof
US12331208B2 (en) 2020-04-14 2025-06-17 Edison Innovations, Llc Films with narrow band emission phosphor materials
US12230620B2 (en) 2020-09-01 2025-02-18 Dolby Intellectual Property Licensing, Llc Devices compatible with night vision equipment
US12195655B2 (en) 2021-04-13 2025-01-14 Dolby Intellectual Property Licensing, Llc Uranium-based phosphors and compositions for displays and lighting applications

Also Published As

Publication number Publication date
KR20190139268A (ko) 2019-12-17
CA3063060A1 (fr) 2018-10-18
CN110914382A (zh) 2020-03-24
EP3609979A1 (fr) 2020-02-19
KR102380421B1 (ko) 2022-03-31

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