WO2025061407A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2025061407A1
WO2025061407A1 PCT/EP2024/073425 EP2024073425W WO2025061407A1 WO 2025061407 A1 WO2025061407 A1 WO 2025061407A1 EP 2024073425 W EP2024073425 W EP 2024073425W WO 2025061407 A1 WO2025061407 A1 WO 2025061407A1
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WO
WIPO (PCT)
Prior art keywords
leds
led
light
blue
led light
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.)
Pending
Application number
PCT/EP2024/073425
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English (en)
Inventor
Ties Van Bommel
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Signify Holding BV
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Signify Holding BV
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Filing date
Publication date
Application filed by Signify Holding BV filed Critical Signify Holding BV
Priority to CN202480059277.3A priority Critical patent/CN121890289A/zh
Publication of WO2025061407A1 publication Critical patent/WO2025061407A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • H10H20/8513—Wavelength conversion materials having two or more wavelength conversion materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light

Definitions

  • the present invention generally relates to lighting devices configured to provide device light. More specifically, the present invention is related to a lighting device comprising a first white light emitting diode (LED) light source and a second white LED light source.
  • LED white light emitting diode
  • a trend in the development of LED lighting is the development of lighting arrangements capable of providing white light having any desired color temperature.
  • the lighting arrangements are configured with a combination of LED’s.
  • White phosphor-converted (pc) LEDs are based on blue LEDs covered by an encapsulant comprising a green and red phosphor.
  • White pc-LEDs are combined with direct- emitting (de) Red, Green and Blue LEDs, for example combined into a single LED package for LED strips.
  • the color temperature can be varied allowing correlated color temperature (CCT) control.
  • US2021/1376200A1 discloses a flash LED package includes a substrate, a flash LED device in a first region of an upper surface of the substrate, and including first to fourth LED light sources that emit white light, blue light, green light, and red light, respectively.
  • An optical sensor in provided a second region of the upper surface of the substrate, and having a light receiving region that detects a correlated color temperature.
  • a lens cover is provided on the substrate to cover the flash LED device and the optical sensor, wherein the lens cover has a lens unit in a region overlapping the first to fourth LED light sources.
  • EP2815438A discloses a light emitting device package that includes a substrate, a first light emitting chip disposed on the substrate, a plurality of second light emitting chips disposed on the outer circumference of the first light emitting chip, and a lens formed on the first and the second light emitting chips.
  • US2019/057954A discloses a light emitter device including a submount with a top surface and a bottom surface, electrically conductive traces on the top surface of the submount and light emitting diodes (LEDs) arranged on the top surface of the submount in light emitter zones.
  • LEDs light emitting diodes
  • the LEDs are being electrically connected to respective traces of the traces, a retention material is disposed over the top surface of the submount in a form of walls which physically separate the light emitter zones. Encapsulants are dispensed in respective light emitter zones of the light emitter zones.
  • the LEDs are individually addressable to independently control an output of light from each of the LEDs to produce a specified light output.
  • a lighting apparatus includes a red LED, a green LED, a blue LED and a white LED made up of a blue light-emitting element and a yellow phosphor.
  • the red LED, the green LED, the blue LED, and the white LED generate 26 to 38%, 35 to 50%, 0 to 2%, and 12 to 33% of light, respectively.
  • White light is obtained by additive color mixing of light from the red, green, blue, and white LEDs has a correlated color temperature of 2800 K or more to less than 3500 K, a deviation of 0.02 or below in absolute value, and a color gamut area ratio of 120% or more to 140% or less.
  • KR20110102062 A discloses a combination of a first LED light source unit having at least one first white LED and emitting white light of a first color temperature, and a second LED light source unit having at least one second white LED and emitting white light of a second color temperature different from the first color temperature Light source unit.
  • a variable resistor is connected to at least one of the first LED light source unit and the second LED light source unit to adjust a current supplied to at least one of the first LED light source unit and the second LED light source unit.
  • a lighting device configured to provide device light.
  • the lighting device comprises a carrier.
  • a first white LED light source is arranged on the carrier and configured to provide first white LED light source light.
  • a second white LED light source is arranged on the carrier and configured to provide second white LED light source light.
  • the first white LED light source comprises at least one first light emitting diodes, N-LED.
  • Each of the N-LEDs comprises a die having a first surface area, SAI, wherein the SAI has a largest spatial extent, SEI, that is greater than or equal to 300 micrometers.
  • the second white LED light source comprises a plurality of second light emitting diodes, M-LEDs.
  • Each of the M-LEDs comprises a die having a second surface area, SA2, wherein the SA2 has a largest spatial extent, SE2, that is less than or equal to 100 micrometers.
  • a ratio, Rl, defined by SA1/SA2 is equal to or larger than 10.
  • the first and second surface areas may also be denoted as light output areas of the dies.
  • the plurality of M-LEDs are arranged in a group of M-LEDs and confined within an area, A.
  • the plurality of N-LEDs are arranged outside the area, A.
  • the plurality of M-LEDs comprise a plurality of red M-LEDs providing red M-LED light, a plurality of green M-LEDs providing green M-LED light, and a plurality of blue M-LEDs providing blue M- LED light.
  • the red M-LEDs provide red M-LED light and may have a peak wavelength in a wavelength range from 600 nm to 680 nm, especially in a wavelength range from 610 nm to 640 nm.
  • the green M-LEDs provide green M-LED light and may have a peak wavelength in a wavelength range from 500 nm to 580 nm, especially in a wavelength range from 520 nm to 560 nm.
  • the blue M-LEDs provide blue M-LED light and may have a peak wavelength in a wavelength range from 430 nm to 490 nm, especially in a wavelength range from 440 nm to 470 nm.
  • the second LED light source light comprises the red M-LED light, the green M-LED light and the blue M-LED light.
  • the second white LED light source light is white light having a second correlated color temperature, CCT2, in a range from 1700K to 6500K or 2700K to 6500K or 2700K to 6500K and optionally having a color render index, CRI2, of at least 70 or at least 80.
  • such a lighting device is a combination of a white light emitting LED package of normal-sized LEDs and a white light emitting package with RGB micro-LEDs that functions as a single white light source.
  • a white light emitting LED package of normal-sized LEDs and a white light emitting package with RGB micro-LEDs that functions as a single white light source.
  • COA color over angle
  • a pc-white LED which is especially important when combined with an optic such as a total internal reflection (TIR) optic. It may also enable an improved control of the CCT of the white light.
  • the area, A has a surface area of equal to or smaller than 10 mm 2 , preferably equal to or smaller than 8 mm 2 , more preferably equal to or smaller than 2 mm 2 .
  • the area A has the dimension of 2x2 mm, such as 1x1 mm.
  • the M-LEDs in the group of M-LEDs may be arranged at a pitch Pl, and the first and second white LED light sources may be arranged at a pitch P2, wherein P2>2P1 or P2>5P1.
  • pitch means the distance between neighboring LEDs
  • first and second white LED light sources it is possible to improve mixing of the colored light emitted by the different M- LEDs.
  • Each of the at least one N-LEDs may comprise a white phosphor-converted LED comprising a blue LED and a converter comprising a green-yellow phosphor configured to at least partly convert blue light emitted by the blue LED into green-yellow converted light and an orange-red phosphor configured to at least partly convert the blue light emitted by the blue LED and/or at least partly convert said green-yellow converted light into orange-red converted light.
  • the obtained effect of such a configuration is improved light quality, and especially improved CRI.
  • RGB N-LEDs are provided on the carrier which is a partitioning configuration allowing optimal control of the different colors, especially in an active manner i.e. color point or correlated color temperature control.
  • the first LED light source light may be white light having a first correlated color temperature, CCT1, in a range from 1700 K to 6500 K, preferably 2700 K to 6500 K, more preferably 2700 K to 4500 K and optionally having a color render index, CRI1, of at least 70 or at least 80 and, optionally, CCT2>CCTl+500K. That is, two different white LED light sources are combined providing the benefits of both technologies i.e. Normal LEDs and MicroLEDs.
  • CCT1 first correlated color temperature
  • the N-LEDs comprise at least one red N-LED and at least one further blue N-LED
  • these may be direct-emitting LEDs. This is advantageous because these LEDs provide a narrow band emission providing light at tuned particular wavelengths. It may also be more efficient because the blue and red LEDs may not be covered by a phosphor (no back reflection due to the phosphor).
  • these green N-LEDs may comprise a blue LED and a converter comprising a further greenyellow phosphor configured to at least partly convert further blue N-LED light emitted by said further blue N-LED into further green-yellow converted light.
  • a converter comprising a further greenyellow phosphor configured to at least partly convert further blue N-LED light emitted by said further blue N-LED into further green-yellow converted light.
  • Phosphor converted green light has typically a larger FWHM which benefits the yellow and green colors in the white light.
  • Such configuration may also be more efficient because green direct-emitting LEDs are less efficient than phosphor converted green LEDs. The reason is that the blue LED are very efficient and green phosphor as well.
  • the lighting device may comprise only one red N-LED, only one blue N-LED and only one green N-LED.
  • An RGB configuration is used for generating white light which is advantageous in that it is rather cost effective given the die area.
  • TSAI may be defined as total surface area of all N-LEDs
  • TSA2 may be defined as a total surface area of all M-LEDs
  • a ratio, R2 defined by TSA1/TSA2 may be equal or greater than 2 or may be equal or greater than 3.
  • a higher TSAI area with respect to the TSA2 area may reduce a total assembly cost since the assembly cost of the M-LEDs is relatively high.
  • the carrier may be a printed circuit board (PCB) comprising circuits configured to provide electric connections between the M-LEDs and a driver, and configured to provide electric connections between the N-LEDs and the driver.
  • the PCB may comprise a metal core.
  • the metal core of the PCB may be a monolithic.
  • the plurality of M-LEDs may be covered by an optical element configured to collimate the second white LED light source light.
  • the optical element is a total internal reflector optical element.
  • the carrier may be a printed circuit board.
  • the at least one first light emitting diodes, N-LEDs may comprises a plurality of N-LEDs e.g. 2, 3, 4, 5, 6, 7, 8, 9 or 10 N-LEDs.
  • the plurality of second light emitting diodes, M-LEDs may comprises at least 20 M-LEDs, preferably at least 30 M-LEDs, more preferably at least 40 M-LEDs, most preferably at least 50 M-LEDs.
  • the green-yellow phosphor comprises a phosphor of the type AsBsOn Ce, wherein A in embodiments comprises one or more of Y, La, Gd, Tb and Lu, especially (at least) one or more of Y, Gd, Tb and Lu, and wherein B in embodiments comprises one or more of Al, Ga, In and Sc.
  • A may comprise one or more of Y, Gd and Lu, such as especially one or more of Y and Lu.
  • B may comprise one or more of Al and Ga, more especially at least Al, such as essentially entirely Al.
  • especially suitable luminescent materials are cerium comprising garnet materials.
  • Embodiments of garnets especially include A3B5O12 garnets, wherein A comprises at least yttrium or lutetium and wherein B comprises at least aluminum.
  • Such garnets may be doped with cerium (Ce), with praseodymium (Pr) or a combination of cerium and praseodymium; especially however with Ce.
  • B may comprise aluminum (Al); however, in addition to aluminum, B may also partly comprise gallium (Ga) and/or scandium (Sc) and/or indium (In), especially up to about 20% of B, more especially up to about 10 % of B (i.e. the B ions essentially consist of 90 or more mole % of Al and 10 or less mole % of one or more of Ga, Sc and In); B may especially comprise up to about 10% gallium.
  • B and O may at least partly be replaced by Si and N.
  • the element A may especially be selected from the group consisting of yttrium (Y), gadolinium (Gd), terbium (Tb) and lutetium (Lu).
  • the garnet luminescent material comprises (Yi- x Lu x )3B50i2:Ce, wherein x is equal to or larger than 0 and equal to or smaller than 1.
  • Ce part of the metal ions (i.e. in the garnets: part of the “A” ions) in the luminescent material is replaced by Ce.
  • Ce part of Y and/or Lu is replaced by Ce. This is known to the person skilled in the art.
  • Ce will replace A in general for not more than 10%; in general, the Ce concentration will be in the range of 0.1 to 4%, especially 0.1 to 2% (relative to A). Assuming 1% Ce and 10% Y, the full correct formula could be (Yo.iLuo.sgCeo.o sALOn. Ce in garnets is substantially or only in the trivalent state, as is known to the person skilled in the art.
  • the orange-red phosphor comprises a phosphor of the type M’ X M2-2XAX6 doped with tetravalent manganese, wherein M’ comprises an alkaline earth cation, M comprises an alkaline cation, and x may be selected from the range of 0-1, wherein A comprises a tetravalent cation, for instance comprising one or more of silicon and titanium, wherein X comprises a monovalent anion, at least comprising fluorine.
  • luminescent materials may herein also be indicated as “KSiF” or “KSF”, whether or not M comprises K or one or more other alkaline cations.
  • M’ x M2-2xAX6 doped with tetravalent manganese may further also shortly be indicated as “phosphor”, i.e. the phrase "phosphor comprising M’ x M2-2xAX6 doped with tetravalent manganese” may in an embodiment also be read as M’ x M2-2xAX6 doped with tetraval ent manganese phosphor, or (tetraval ent) Mn-doped M’ X M2-2XAX6 phosphor, or shortly “phosphor”.
  • Relevant alkaline earth cations (M’) are magnesium (Mg), strontium (Sr), calcium (Ca) and barium (Ba), especially one or more of Sr and Ba.
  • M alkaline cations
  • Na sodium
  • K potassium
  • Rb rubidium
  • Cs cesium
  • M comprises at least potassium.
  • M comprises at least rubidium.
  • the phrase “wherein M comprises at least potassium” indicates for instance that of all M cations in a mole M’ x M2-2xAX6 , a fraction comprises K + and an optionally remaining fraction comprises one or more other monovalent (alkaline) cations (see also below).
  • M comprises at least potassium and rubidium.
  • the M’ X M2- 2xAXe luminescent material has the hexagonal phase.
  • the M’ X M2- 2xAXe luminescent material has the cubic phase.
  • a combination of different alkaline cations may be applied.
  • a combination of different alkaline earth cations may be applied.
  • a combination of one or more alkaline cations and one or more alkaline earth cations may be applied.
  • x may be selected from the range of 0-1, especially x ⁇ 1.
  • x 0.
  • the term “tetravalent manganese” refers to Mn 4+ . This is a well-known luminescent ion.
  • M’ x M2-2xAX6 doped with tetravalent manganese may also be indicated as M’xM2-2xAi-mMn m X6.
  • the mole percentage of manganese, i.e. the percentage it replaces the tetravalent cation A will in general be in the range of 0.1-15 %, especially 1-12 %, i.e. m is in the range of 0.001-0.15, especially in the range of 0.01-0.12.
  • A comprises a tetravalent cation, and preferably at least comprises silicon.
  • A may optionally (further) comprise one or more of titanium (Ti), germanium (Ge), stannum (Sn) and zinc (Zn).
  • Ti titanium
  • Ge germanium
  • Sn stannum
  • Zn zinc
  • at least 80%, even more preferably at least 90%, such as at least 95% of M consists of silicon.
  • M’ x M2-2xAX6 may also be described as M’ x M2-2xAi-m-t-g-s-zrMn m TitGegSnsZrzrX6, wherein m and x are as indicated above, and wherein t,g,s,zr are each individually preferably in the range of 0-0.2, especially 0-0.1, even more especially 0-0.05, wherein t+g+s+zr is smaller than 1, especially equal to or smaller than 0.2, preferably in the range of 0-0.2, especially 0-0.1, even more especially 0-0.05, and wherein A is especially Si.
  • X is preferably fluorine (F).
  • M relates to monovalent cations, but preferably at least comprises potassium and/or rubidium.
  • Other monovalent cations that may further be comprised by M can be selected from the group consisting of lithium (Li), sodium (Na), cesium (Cs) and ammonium (NHL).
  • Li lithium
  • Na sodium
  • Cs cesium
  • NHS ammonium
  • X relates to a monovalent anion, but at least comprises fluorine.
  • Suitable monovalent anions may be selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).
  • Cl chlorine
  • Br bromine
  • I iodine
  • at least 80%, even more preferably at least 90%, such as 95% of X consists of fluorine.
  • M’ x M2-2xAX6 can also be described as M’ X M2- 2xA(Fi- c i-b-iClciBrbIi)6, wherein cl,b,i are each individually preferably in the range of 0-0.2, especially 0-0.1, even more especially 0-0.05, and wherein cl+b+i is smaller than 1, especially equal to or smaller than 0.2, preferably in the range of 0-0.2, especially 0-0.1, even more especially 0-0.05.
  • X essentially consists of F (fluorine).
  • M’ X M2-2XAX6 comprises BGSiFe.
  • manganese replaces part of a host lattice ion and has a specific function, it is also indicated as “dopant” or “activator”. Hence, the hexafluorosilicate is doped or activated with manganese (Mn 4+ ).
  • M’ x M2-2xAX6 is also indicated as M’ X M”2-2XAX6.
  • the orange-red phosphor comprises a phosphor of the nitride or oxynitride class, comprising I ESisNs Eu 2 , or MAlSiNvEu 2 or Ca2AlSi3O2Ns:Eu 2+ , etc., wherein M comprises one or more of Ba, Sr, and Ca, especially in embodiments at least Sr.
  • the luminescent may comprise one or more materials selected from the group consisting of (Ba,Sr,Ca)S:Eu, (Ba,Sr,Ca)AlSiN3:Eu and (Ba,Sr,Ca)2SisN8:Eu.
  • Eu europium
  • Eu is substantially or only divalent, and replaces one or more of the indicated divalent cations.
  • Eu will not be present in amounts larger than 10% of the cation; its presence will especially be in the range of about 0.5 to 10%, more especially in the range of about 0.5 to 5% relative to the cation(s) it replaces.
  • Divalent europium will in general replace divalent cations, such as the above divalent alkaline earth cations, especially Ca, Sr, or Ba.
  • the material (Ba,Sr,Ca)S:Eu can also be indicated as MS:Eu, wherein M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr) and calcium (Ca); especially, M comprises in this compound calcium or strontium, or calcium and strontium, more especially calcium.
  • Eu is introduced and replaces at least part of M (i.e. one or more of Ba, Sr, and Ca).
  • the material (Ba,Sr,Ca)2SisN8:Eu can also be indicated as NfcSis Eu, wherein M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr) and calcium (Ca); especially, M comprises in this compound Sr and/or Ba.
  • M consists of Sr and/or Ba (not taking into account the presence of Eu), especially 50 to 100%, more especially 50 to 90% Ba and 50 to 0%, especially 50 to 10% Sr, such as Bai.sSro.sSisNsHu (i.e. 75 % Ba; 25% Sr).
  • Eu is introduced and replaces at least part of M, i.e.
  • the material (Ba,Sr,Ca)AlSiN3:Eu can also be indicated as MAlSi Eu, wherein M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr) and calcium (Ca); especially, M comprises in this compound calcium or strontium, or calcium and strontium, more especially calcium.
  • M is introduced and replaces at least part of M (i.e. one or more of Ba, Sr, and Ca).
  • Eu in the above indicated luminescent materials is substantially or only in the divalent state, as is known to the person skilled in the art.
  • a LED package comprising a package housing that houses a lighting device as summarized above.
  • the LED package housing may have a high reflectivity of at least 80%.
  • a lamp or a luminaire comprising a lighting device as summarized above or a LED package as summarized above.
  • such a lamp or luminaire may comprise a controller for individually controlling the first and second white LED light sources.
  • Figure 1 schematically illustrates a top view of a lighting device
  • Figure 2 schematically illustrates a cross-sectional view of a LED covered by an optical element
  • Figure 3 schematically illustrates a top view of a lighting device
  • Figure 4 schematically illustrates a LED package
  • a lighting device 100 configured to provide device light comprises a carrier 151.
  • a first white LED light source 11 is arranged on the carrier 151 and configured to provide first white LED light source light.
  • a second white LED light source 12 is arranged on the carrier 151 and configured to provide second white LED light source light.
  • the first white LED light source 11 comprises at least one first light emitting diodes, N-LEDs, 101.
  • the plurality of N-LEDs may comprise 2, 3, 4, 5, 6, 7, 8, 9 or 10 N-LEDs.
  • the plurality of M-LEDs may comprise at least 20 M-LEDs, preferably at least 25 M-LEDs, more preferably at least 30 M-LEDs, most preferably at least 35 M-LEDs.
  • Each of the N-LEDs 101 comprises a die having a first surface area, SAI, wherein the SAI has a largest spatial extent, SEI, that is greater than or equal to 300 micrometers.
  • the second white LED light source 12 comprises a plurality of second light emitting diodes, M-LEDs, 102.
  • Each of the M-LEDs 102 comprises a die having a second surface area, SA2, wherein the SA2 has a largest spatial extent, SE2, that is less than or equal to 100 micrometers.
  • the plurality of M-LEDs 102 are arranged in a group of M-LEDs and confined within an area, A, 112.
  • the plurality of N-LEDs 101 are arranged outside the area, A, 112.
  • the plurality of M-LEDs 102 comprise a plurality of red M-LEDs providing red M- LED light, a plurality of green M-LEDs providing green M-LED light, and a plurality of blue M-LEDs providing blue M-LED light.
  • the second LED light source light comprises said red M-LED light, said green M-LED light and said blue M-LED light.
  • the number of M-LEDs 102 may be defined as X and the number of N-LEDs 101 may be defined as Y, and X may be greater than or equal to 5 times Y. This is exemplified in figure 1 in that the number of M-LEDs 102 is 16, the number of N-LEDs 101 is 3, whereby the ratio 16 to 3 is greater than 5.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)

Abstract

L'invention concerne un dispositif d'éclairage comprenant une combinaison d'une pluralité de LED de taille normale émettant de la lumière blanche et d'une pluralité de micro-LED RVB émettant de la lumière blanche qui fonctionne comme une seule source de lumière blanche. Lesdites plusieurs M-LED sont agencées dans un groupe de M-LED et confinées à l'intérieur d'une zone, A, et lesdites plusieurs N-LED sont disposées à l'extérieur de la zone A.
PCT/EP2024/073425 2023-09-18 2024-08-21 Dispositif d'éclairage Pending WO2025061407A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202480059277.3A CN121890289A (zh) 2023-09-18 2024-08-21 照明设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23197831 2023-09-18
EP23197831.3 2023-09-18

Publications (1)

Publication Number Publication Date
WO2025061407A1 true WO2025061407A1 (fr) 2025-03-27

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PCT/EP2024/073425 Pending WO2025061407A1 (fr) 2023-09-18 2024-08-21 Dispositif d'éclairage

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CN (1) CN121890289A (fr)
WO (1) WO2025061407A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110102062A (ko) 2010-03-10 2011-09-16 삼성엘이디 주식회사 색온도 조절이 가능한 ｌｅｄ 장치
EP2398079A1 (fr) 2009-04-27 2011-12-21 Toshiba Lighting&Technology Corporation Dispositif d'éclairage
EP2815438A1 (fr) 2012-02-13 2014-12-24 LG Innotek Co., Ltd. Boîtier électroluminescent
US20190057954A1 (en) 2017-08-18 2019-02-21 Cree, Inc. Light emitting diodes, components and related methods
US20210376200A1 (en) 2020-06-01 2021-12-02 Samsung Electronics Co., Ltd. Flash led package

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EP2398079A1 (fr) 2009-04-27 2011-12-21 Toshiba Lighting&Technology Corporation Dispositif d'éclairage
KR20110102062A (ko) 2010-03-10 2011-09-16 삼성엘이디 주식회사 색온도 조절이 가능한 ｌｅｄ 장치
EP2815438A1 (fr) 2012-02-13 2014-12-24 LG Innotek Co., Ltd. Boîtier électroluminescent
US20190057954A1 (en) 2017-08-18 2019-02-21 Cree, Inc. Light emitting diodes, components and related methods
US20210376200A1 (en) 2020-06-01 2021-12-02 Samsung Electronics Co., Ltd. Flash led package

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