JP7216678B2 - 光結合装置 - Google Patents
光結合装置 Download PDFInfo
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- JP7216678B2 JP7216678B2 JP2020020494A JP2020020494A JP7216678B2 JP 7216678 B2 JP7216678 B2 JP 7216678B2 JP 2020020494 A JP2020020494 A JP 2020020494A JP 2020020494 A JP2020020494 A JP 2020020494A JP 7216678 B2 JP7216678 B2 JP 7216678B2
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- H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
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- H01L31/147—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the light source or sources being controlled by the semiconductor device sensitive to radiation, e.g. image converters, image amplifiers or image storage devices the light sources and the devices sensitive to radiation all being semiconductor devices characterised by potential barriers
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- G—PHYSICS
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12007—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
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- G02F1/31—Digital deflection, i.e. optical switching
- G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
- G02F1/3132—Digital deflection, i.e. optical switching in an optical waveguide structure of directional coupler type
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- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
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- H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
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- H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
- H01L31/16—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the semiconductor device sensitive to radiation being controlled by the light source or sources
- H01L31/167—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the semiconductor device sensitive to radiation being controlled by the light source or sources the light sources and the devices sensitive to radiation all being semiconductor devices characterised by potential barriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
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- H04B10/802—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections for isolation, e.g. using optocouplers
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Description
先ず、第1の実施形態について説明する。
図1は、本実施形態に係る光結合装置を示す斜視図である。
図2(a)~(c)は、本実施形態に係る光結合装置を示す三面図である。
図3は、本実施形態に係る光結合装置を示す回路図である。
本実施形態に係る光結合装置は、例えば、フォトリレーである。
電極板21~24は、それぞれ、半田等の接合部材(図示せず)を介して外部に接続される。電極板21と電極板22との間には、高周波電流RFが印加されている。この高周波電流RFの周波数は、例えば、10GHz以上であり、例えば、20~24GHz程度である。MOSFET13及び14がオフ状態であると、高周波電流RFは光結合装置1を実質的に通過しない。
光結合装置1においては、電極板21が薄い1枚の板であり、下面21Lに半田等の接合部材が接合され、上面21UにMOSFET13のドレイン端子13dが接合される。このため、電極板21のインダクタンス成分が小さく、電極板21における高周波電流RFの損失が小さい。同様に、電極板22も薄い1枚の板であるため、電極板22における高周波電流RFの損失が小さい。この結果、光結合装置1は高周波電流の通過特性が良好である。
図4(a)~(c)は、本実施形態に係る光結合装置を示す三面図である。
図4(a)~(c)に示すように、本実施形態に係る光結合装置2は、第1の実施形態に係る光結合装置1(図1~図3参照)と比較して、金属板41の替わりに絶縁膜45が設けられている点が異なっている。絶縁膜45の上面45Uは受光素子11の下面11Lに接合され、絶縁膜45の下面45Lは封止部材50の下面50Lにおいて露出している。Z方向から見て、絶縁膜45は受光素子11よりもひと回り大きい。絶縁膜45は、外部の実装基板(図示せず)に受光素子11を固定する絶縁性の固定材料として機能してもよい。絶縁膜45は、例えば、DAF(Die Attach Film)又はDBF(Die Bonding Film)であり、例えば、エポキシ樹脂、アクリルポリマー及びポリイミド等の混合物に、シリカ等の無機粒子を加えた材料からなる。
次に、第3の実施形態について説明する。
図5(a)~(c)は、本実施形態に係る光結合装置を示す三面図である。
次に、第4の実施形態について説明する。
図6(a)~(c)は、本実施形態に係る光結合装置を示す三面図である。
図6(a)~(c)に示すように、本実施形態に係る光結合装置4は、MOSFET、受光素子11、発光素子12が、Z方向に沿って積層された三層構造である。
光結合装置4においては、スイッチング素子として、縦型のMOSFET13及び14の替わりに、同じく縦型のMOSFET16及び17が設けられている。MOSFET16及び17のX方向の長さは、MOSFET13及び14のX方向の長さよりも長い。
次に、比較例について説明する。
図7(a)~(c)は、比較例に係る光結合装置を示す三面図である。
次に、上述の実施形態の効果を示す試験例を説明する。
図8は、横軸に高周波電流の周波数をとり、縦軸にインサーションロスをとって、高周波電流の通過特性を示すグラフである。
11:受光素子
11L:下面
11U:上面
11a、11b:出力端子
12:発光素子
12U:上面
12a:アノード端子
12c:カソード端子
13:MOSFET
13L:下面
13U:上面
13d:ドレイン端子
13e:ダイオード
13g:ゲート端子
13s:ソース端子
14:MOSFET
14L:下面
14U:上面
14d:ドレイン端子
14e:ダイオード
14g:ゲート端子
14s:ソース端子
15:MOSFET
15L:下面
15U:上面
15d1、15d2:ドレイン端子
15g:ゲート端子
15s:ソース端子
16:MOSFET
16L:下面
16U:上面
16d:ドレイン端子
16g:ゲート端子
16s:ソース端子
17:MOSFET
17L:下面
17U:上面
17d:ドレイン端子
17g:ゲート端子
17s:ソース端子
21:電極板
21L:下面
21U:上面
22:電極板
22L:下面
22U:上面
23:電極板
23L:下面
23U:上面
24:電極板
24L:下面
24U:上面
25、26:接続層
31~38、39a、39b:ワイヤ
41:金属板
41L:下面
41U:上面
42:接着剤層
43:透光部材
44:接着剤層
45:絶縁膜
45L:下面
45U:上面
46:金属板
46L:下面
46U:上面
47:接着剤層
50:封止部材
50L:下面
50S:側面
50U:上面
101:光結合装置
110:絶縁基板
121~124:上面電極
131~136:埋込導体
141~144:下面電極
RF:高周波電流
Claims (10)
- 第1出力端子及び第2出力端子が設けられた受光素子と、
前記受光素子上に設けられた発光素子と、
前記第1出力端子に接続された第1主端子、前記第2出力端子に接続された制御端子、及び、第2主端子を有した第1スイッチング素子と、
上面が前記第2主端子に接続された第1電極板と、
前記受光素子、前記発光素子、前記第1スイッチング素子を覆い、下面に前記第1電極板の下面が露出した封止部材と、
下面が前記封止部材の下面に露出した第1絶縁膜と、
を備え、
前記第1電極板の下面と前記封止部材の下面は同一平面を構成し、
前記第1スイッチング素子は前記第1絶縁膜上に設けられており、
前記第1主端子、前記制御端子、前記第2主端子は、前記第1スイッチング素子の上面に設けられている光結合装置。 - 上面が前記受光素子の下面に接合され、下面が前記封止部材の下面において露出した第2金属板をさらに備え、
前記第1電極板の下面、前記第2金属板の下面、及び、前記封止部材の下面は、同一平面を構成する請求項1に記載の光結合装置。 - 上面が前記受光素子の下面に接合され、下面が前記封止部材の下面において露出した第2絶縁膜をさらに備え、
前記第1電極板の下面、前記第2絶縁膜の下面、及び、前記封止部材の下面は、同一平面を構成する請求項1に記載の光結合装置。 - 第1出力端子及び第2出力端子が設けられた受光素子と、
前記受光素子上に設けられた発光素子と、
前記第1出力端子に接続された第1主端子、前記第2出力端子に接続された制御端子、及び、第2主端子を有した第1スイッチング素子と、
上面が前記第2主端子に接続された第1電極板と、
前記受光素子、前記発光素子、前記第1スイッチング素子を覆い、下面に前記第1電極板の下面が露出した封止部材と、
上面が前記受光素子の下面に接合され、下面が前記封止部材の下面において露出した第2絶縁膜と、
を備え、
前記第1電極板の下面、前記第2絶縁膜の下面、及び、前記封止部材の下面は、同一平面を構成する光結合装置。 - 下面が前記封止部材の下面に露出した第1金属板をさらに備え、
前記第1スイッチング素子は前記第1金属板上に設けられており、
前記第1主端子、前記制御端子、前記第2主端子は、前記第1スイッチング素子の上面に設けられている請求項4に記載の光結合装置。 - 下面が前記封止部材の下面に露出した第1絶縁膜をさらに備え、
前記第1スイッチング素子は前記第1絶縁膜上に設けられており、
前記第1主端子、前記制御端子、前記第2主端子は、前記第1スイッチング素子の上面に設けられている請求項4に記載の光結合装置。 - 前記第1電極板の厚さは0.1mm以下である請求項1~6のいずれか1つに記載の光結合装置。
- 前記第1スイッチング素子の側方に設けられ、上面に第3主端子及び制御端子が設けられ、下面に第4主端子が設けられ、前記第3主端子が前記受光素子の前記第1出力端子に接続され、前記制御端子が前記受光素子の前記第2出力端子に接続された第2スイッチング素子と、
上面が前記第2スイッチング素子の前記第4主端子に接続され、下面が前記封止部材の下面に露出した第2電極板と、
をさらに備え、
前記第1スイッチング素子の第1主端子及び制御端子は前記第1スイッチング素子の上面に設けられており、前記第1スイッチング素子の第2主端子は前記第1スイッチング素子の下面に設けられており、
前記受光素子は前記第1スイッチング素子及び前記第2スイッチング素子の上方に配置された請求項1に記載の光結合装置。 - 前記発光素子のアノード端子に接続され、下面が前記封止部材の下面において露出した第3電極板と、
前記発光素子のカソード端子に接続され、下面が前記封止部材の下面において露出した第4電極板と、
をさらに備え
前記第3電極板の下面、前記第4電極板の下面、及び、前記封止部材の下面は、同一平面を構成する請求項1~8のいずれか1つに記載の光結合装置。 - 前記封止部材の側面には金属製の部材が露出していない請求項1~9のいずれか1つに記載の光結合装置。
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JP2015050281A (ja) | 2013-08-30 | 2015-03-16 | 株式会社東芝 | 光結合装置 |
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