JP7184852B2 - Led照明用実装基板を有する照明装置 - Google Patents
Led照明用実装基板を有する照明装置 Download PDFInfo
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- JP7184852B2 JP7184852B2 JP2020138194A JP2020138194A JP7184852B2 JP 7184852 B2 JP7184852 B2 JP 7184852B2 JP 2020138194 A JP2020138194 A JP 2020138194A JP 2020138194 A JP2020138194 A JP 2020138194A JP 7184852 B2 JP7184852 B2 JP 7184852B2
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 90
- 239000000758 substrate Substances 0.000 claims description 67
- 239000008393 encapsulating agent Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 11
- 230000004313 glare Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 229920002050 silicone resin Polymers 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000007850 fluorescent dye Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000002507 cathodic stripping potentiometry Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910017109 AlON Inorganic materials 0.000 description 1
- 229920005822 acrylic binder Polymers 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
-
- 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
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- 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
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/235—Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
-
- 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
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
-
- 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
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/68—Details of reflectors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/483—Containers
- H01L33/486—Containers adapted for surface mounting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0209—External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09436—Pads or lands on permanent coating which covers the other conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10106—Light emitting diode [LED]
Description
複数個の導電部を有する基板と、
前記基板の有する前記複数個の導電部に各々接続するように実装された、個別に封止された複数個の表面実装型LED素子と
を含み、
前記基板が、
前記複数個の表面実装型LED素子を実装する側の面の少なくとも一部を覆う、第一の蛍光体を含んだ蛍光体層
を含み、
前記第一の蛍光体が、前記複数個の表面実装型LED素子のうちの少なくとも一個の発光波長によって励起されるものであり、
前記複数個の表面実装型LED素子が、一体的に封止されない
ことを特徴とする、照明装置。
前記フリップチップ素子が前記基板と接する側に反射膜を有さない
ことを特徴とする、[1]~[8]のいずれか一項に記載の照明装置。
前記蛍光体層が含む前記第一の蛍光体が、前記第一の表面実装型LED素子の発光および/または前記第二の表面実装型LED素子の発光により励起され、
前記第一の蛍光体の発光波長と、前記第二の表面実装型LED素子の発光波長とが、CIE色度座標におけるx値の差が1.0以下、かつy値の差が1.0以下である、[1]~[9]のいずれか一項に記載の照明装置。
本明細書においては、表面実装型LED素子(SMDタイプ)とは、LEDベアチップがパッケージ化された表面実装型のLED素子のことを指し、COBタイプ(一括封止されたLED素子)のものは含まないと定義する。すなわち本発明の実施形態に係る照明装置は、個別に封止された複数個のSMDタイプのLED素子を有する。
図1には、本発明の第一の実施形態に係る照明装置 10 を模式的に示す。図1は照明装置 10 の断面図である。なお各図面はわかりやすさのために特徴と厚さ方向の大きさを極端に誇張して描いていることに留意されたい。この照明装置 10 は、複数個の導電部 14 を有する基板 12 を有しており、この複数個の導電部 14 の各々に対して複数個の表面実装型LED素子 16 が接続するように実装されている。複数個の導電部 14 のそれぞれには導線を含んだ実装パターン(不図示)がつながっており、表面実装型LED素子 16 の各々に給電できるようになっている。表面実装型LED素子 16 のそれぞれは封止材(不図示)で個別に封止されていてもよいが、複数個がまとめて一体的に封止されることはない(すなわち、COBタイプでは無い)。なお図1では表面実装型LED素子 16 と導電部 14 の個数がそれぞれ三個であるが、これはあくまで例示であって、当然ながらこれより多いか少ない個数であってもよい。また、表面実装型LED素子 16 の個数が、導電部 14 の個数より少ない(すなわち、導電部が余って使われない)ような実施形態があってもよい。
図2には、本発明の第二の実施形態に係る照明装置 20 の断面図を模式的に示す。照明装置 20 は、第一の実施形態に係る照明装置 10 と同様に、複数個の導電部 24 を有する基板 22 を有しており、この複数個の導電部 24 の各々に対して複数個の表面実装型LED素子 26 が接続するように実装されている。
図3には、本発明の第三の実施形態に係る照明装置 30 の断面図を模式的に示す。照明装置 30 は、第一の実施形態に係る照明装置 10 と同様に、複数個の導電部 34 を有する基板 32 を有しており、この複数個の導電部 34 の各々に対して複数個の表面実装型LED素子 36 が接続するように実装されている。
図4は、本発明の第四の実施形態に係る照明装置 40 であって、特殊構成を取るフリップチップ素子を用いたものを描いた模式図である。図4は図1~3とは異なり、複数の表面実装型LED素子 46 のうちのひとつだけの周辺のみを極端に拡大した図になっていることを理解されたい。
シリコーン樹脂(東レダウコーニング社製のOE6630、A,B材をA/B=1/4重量比で配合したもの)に、酸化ジルコニウム(第一希元素化学工業社製のHSY-3W)を50vol%混合した。ダイフリーGA-7550(ダイキン工業社製)を離型剤として塗布した50mm×50mm、深さ3mmのステンレス製の型に、当該原料樹脂混合物を流し込み、1次硬化条件として100℃で1時間加熱し、その後の2次硬化条件として150℃で1時間加熱して硬化を行い、白色基板を得た。
上記原料樹脂混合物の作成にあたり、シリコーン樹脂に対してさらに、緑色蛍光体としてALONBRIGHT GRMW540K8SD(デンカ社製)および赤色蛍光体としてALONBRIGHT KR2K01(デンカ社製)を重量比1:3で混合したものを30vol%混練したこと以外は、比較例1と同様にして、実施例1に係る供試体を得た。
50mm×50mm、厚さ3mmのガラス基板を用意した。当該ガラス基板の表面に対し、蛍光体としてALONBRIGHT GRMW540K8SD(デンカ社製)およびALONBRIGHT KR2K01(デンカ社製)を重量比1:3で混合したものを30vol%で混合したガラスバインダー塗料(市販品)を、厚さ200μmで塗布し、蛍光体層を形成した。
供試体の実装面の上から5mm離して厚さ3mmの観察用ガラス板を設置し、その観察用ガラス板の上に厚さ0.1mmの拡散シート(きもと社製の75PBA)を敷いた。当該拡散シートの上から316mm離して、S-MOSカメラを設置した。
12 基板
14 導電部
16 表面実装型LED素子
18 蛍光体層
20 照明装置
22 基板
24 導電部
26 表面実装型LED素子
28 蛍光体層
30 照明装置
32 基板
34 導電部
35 実装パターン
36 表面実装型LED素子
38 蛍光体層
40 照明装置
42 基板
44a p電極
44b n電極
46 表面実装型LED素子(フリップチップ素子)
47 パッケージの基板
48 蛍光体層
49 発光部・結晶層
Claims (9)
- 照明装置であって、
複数個の導電部を有する基板と、
前記基板の有する前記複数個の導電部に各々接続するように実装された、個別に封止された複数個の表面実装型LED素子と
を含み、
前記基板が、
前記複数個の表面実装型LED素子を実装する側の面の少なくとも一部を覆う、第一の蛍光体を含んだ蛍光体層
を含み、
前記第一の蛍光体が、前記複数個の表面実装型LED素子のうちの少なくとも一個の発光波長によって励起されるものであり、
前記複数個の表面実装型LED素子が、一体的に封止されず、
前記複数個の表面実装型LED素子が、CSP素子、SMD素子、およびフリップチップ素子からなる群から選択される一種以上のLED素子である
ことを特徴とする、照明装置。 - 前記基板がさらに反射層を含む、請求項1に記載の照明装置。
- 前記反射層が前記蛍光体層に隣接する、請求項2に記載の照明装置。
- 前記複数個の導電部のうちの少なくとも一個が、前記基板の厚み方向に関して、前記蛍光体層の表面の下に位置する、請求項1~3のいずれか一項に記載の照明装置。
- 前記複数個の導電部のうちの少なくとも一個が、前記基板の厚み方向に関して、前記蛍光体層の表面と同じ高さに位置するかまたは前記蛍光体層の表面の上に位置する、請求項1~4のいずれか一項に記載の照明装置。
- 前記複数個の表面実装型LED素子のうちの少なくとも一個が、当該LED素子自体を封止する封止体を有する、請求項1~5のいずれか一項に記載の照明装置。
- 前記封止体が第二の蛍光体を含む、請求項6に記載の照明装置。
- 前記複数個の表面実装型LED素子のうちの少なくとも一個以上がフリップチップ素子であり、
前記フリップチップ素子が前記基板と接する側に反射膜を有さない
ことを特徴とする、請求項1~7のいずれか一項に記載の照明装置。 - 前記表面実装型LED素子が、第一の発光波長を有する第一の表面実装型LED素子および第二の発光波長を有する第二の表面実装型LED素子を含み、
前記蛍光体層が含む前記第一の蛍光体が、前記第一の表面実装型LED素子の発光および/または前記第二の表面実装型LED素子の発光により励起され、
前記第一の蛍光体の発光波長と、前記第二の表面実装型LED素子の発光波長とが、CIE色度座標におけるx値の差が1.0以下、かつy値の差が1.0以下である、請求項1~8のいずれか一項に記載の照明装置。
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CN112631005A (zh) * | 2019-10-08 | 2021-04-09 | 群创光电股份有限公司 | 显示装置 |
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