JP6106859B2 - 発光デバイスおよび方法 - Google Patents
発光デバイスおよび方法 Download PDFInfo
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- JP6106859B2 JP6106859B2 JP2013540955A JP2013540955A JP6106859B2 JP 6106859 B2 JP6106859 B2 JP 6106859B2 JP 2013540955 A JP2013540955 A JP 2013540955A JP 2013540955 A JP2013540955 A JP 2013540955A JP 6106859 B2 JP6106859 B2 JP 6106859B2
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- H01L25/04—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00
- H01L25/0753—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00 the devices being arranged next to each other
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- 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
- H10H20/81—Bodies
- H10H20/813—Bodies having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the bodies
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- H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
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- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
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- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
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- H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
- H01L2224/8319—Arrangement of the layer connectors prior to mounting
- H01L2224/83192—Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on another item or body to be connected to the semiconductor or solid-state body
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- H01L2224/92—Specific sequence of method steps
- H01L2224/922—Connecting different surfaces of the semiconductor or solid-state body with connectors of different types
- H01L2224/9222—Sequential connecting processes
- H01L2224/92242—Sequential connecting processes the first connecting process involving a layer connector
- H01L2224/92247—Sequential connecting processes the first connecting process involving a layer connector the second connecting process involving a wire connector
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- H01L25/16—Assemblies consisting of a plurality of semiconductor or other solid state devices the devices being of types provided for in two or more different subclasses of H10B, H10D, H10F, H10H, H10K or H10N, e.g. forming hybrid circuits
- H01L25/167—Assemblies consisting of a plurality of semiconductor or other solid state devices the devices being of types provided for in two or more different subclasses of H10B, H10D, H10F, H10H, H10K or H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
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- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
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- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1203—Rectifying Diode
- H01L2924/12032—Schottky diode
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- 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]
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Led Device Packages (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
本出願は、2010年11月22日に出願された米国仮特許出願番号第61/416,184号および2011年5月10日に出願された一部継続出願の米国特許出願番号第13/104,558号の利益を主張し、その開示の全体が参照により本明細書に組み込まれる。本出願は、2010年11月22日に出願された米国意匠特許出願番号第29/379,636号、2011年2月16日に出願された一部継続出願の米国特許出願番号第13/028,972号、および2011年10月26日に出願された米国特許出願番号第13/282,172号に関連する。
本明細書で開示される主題は、一般に、発光デバイスおよび方法に関する。より詳細には、本明細書で開示される主題は、発光ダイオード(LED)の少なくとも1つのパターンおよび/またはアレイを備える発光デバイスならびに方法に関する。
発光ダイオード(LED)などの発光デバイスは、白色光(たとえば、白色またはほぼ白色であると知覚される)を提供するためにパッケージで利用することができ、白熱灯、蛍光灯、および金属ハライド高輝度放電(HID)ライト製品用の代替品として開発されている。LEDデバイスの代表的な例は、LEDチップであって、その一部分がたとえばイットリウムアルミニウムガーネット(YAG)などの蛍光体で被覆されうる、少なくとも1つのLEDチップを有するデバイスを備える。蛍光体被覆は、1つまたは複数のLEDチップから放出される光を白色光に変換しうる。たとえば、LEDチップは、所望の波長を有する光を放出し、蛍光体は、次に、たとえば約550nmのピーク波長を有する黄色の蛍光を放出しうる。観察者は、光放出の混合物を白色光として知覚する。白色光変換蛍光体の代替として、赤色、緑色、および青色(RGB)波長の発光デバイスが、1つのデバイスまたはパッケージまたはデバイス内で組み合わされて、白色として知覚される光を生成しうる。
本開示によれば、工業的および商業的照明製品を含む種々の用途に好適である新規な発光デバイスおよび方法が提供される。したがって、エネルギー節減を提供しながら、光出力性能を増大させ、種々の低電圧用途から高電圧用途に対処するために最適化された発光デバイスの少なくとも1つのパターン、配置、および/またはアレイを備える、発光デバイスおよび方法を提供することが、本明細書で開示される本発明の目的である。
当業者に対する、その最良態様を含む本主題の完全でかつ実施可能な程度の開示は、添付図面に対する参照を含む、本明細書の残りの部分でより詳細に述べられる。
一態様では、限定されることなく、伝導性パッド30は、約6.568mmの半径および約135.7mm2の面積を有しうる。そのため、単一LEDチップ25の面積と伝導性エリア30の面積との比は、約0.0027以下を含みうる。一態様では、単一LEDチップ25の面積と伝導性エリア30の面積との比は、約0.0018以下を含みうる。他の態様では、比は、約0.0012以下を含みうる。以下の表2では、種々のLED25のチップサイズおよび伝導性パッド30の面積が挙げられる。LED25は、伝導性パッドの面積と比較して小さい、すなわち伝導性パッドの面積の約0.0027以下であるチップを備えうる。しかし、任意のチップサイズを使用することができる。
単一放出エリア上で小さなフットプリントを備える多数のLED25を使用することは、LED25が放出エリア16の部分上で1つまたは複数の均一なパターンになるよう配列されうるため、高い輝度などの望ましい光学特性に加えて、より均一な光出力を有利に可能にしうる。LED25の集中化パターンは、集中化された光放出を可能にしうる。一態様では、本明細書で述べる1つまたは複数のパターン内のLED25の密度または間隔は、隣接するLED25によって光が吸収または遮断されないように調整されうる。すなわち、本明細書で開示されるLED25のパターンまたは配置は、隣接するLED25または近傍のLED25によって吸収される光の量を最小にすることによって光抽出を改善する場合がある。1ストリング当たりのLED25の数は、LEDデバイスが低電圧から高電圧で動作可能であることを可能にしうる。説明の目的で、4つのパターンが示されている。しかし、LED25の任意の適したパターンが企図される。LED25の各ストリングは、単一パターンまたは1より多いパターンの組合せを備えうる。
Claims (45)
- 発光デバイスであって、
基板と、
前記基板上にアレイで配設された複数の発光ダイオード(LED)であって、前記アレイは、ストリングを構成するLEDの複数の異なる配置形態を含み、前記LEDの少なくとも1つの配置形態は、隣接するLED同士が各LEDの一側面を通る共通の水平ラインの上と下の両方に交互に配置されるチェッカーボードパターンを形成するように隣接するLED同士が接続されて、非直線状をなしている、発光ダイオード(LED)と、
前記LEDのアレイの周りに吐出された保持材料と、を備えるデバイス。 - 前記保持材料が反射材料を含む、請求項1に記載のデバイス。
- 前記複数のLEDは、64より多いLEDである、請求項1に記載のデバイス。
- 前記LEDのアレイは、LEDの2つ以上のストリングを備え、前記LEDの2つ以上のストリングは、直列に電気接続された複数のLEDを備える、請求項1に記載のデバイス。
- 前記LEDはそれぞれ、約470μm以下の長さおよび約350μm以下の幅を有する、請求項1に記載のデバイス。
- 約16ボルト(V)以下で動作可能である、請求項1に記載のデバイス。
- 約16ボルト(V)以上の動作のために構成される、請求項1に記載のデバイス。
- 約42ボルト(V)以上の動作のために構成される、請求項1に記載のデバイス。
- 前記基板は、少なくとも1つの電気トレースにワイヤボンディングされる少なくとも1つのESDチップを備え、前記保持材料は、前記少なくとも1つのESDチップ上に吐出される、請求項1に記載のデバイス。
- 前記基板は、第1および第2の電気トレースを備え、LEDの各ストリングは、電気コネクタを介して前記第1および第2の電気トレースに電気接続される、請求項4に記載のデバイス。
- 前記保持材料は、前記電気コネクタの一部分の上に少なくとも部分的に吐出される、請求項10に記載のデバイス。
- 前記LEDの2つ以上のストリングは、直列に電気接続された5つ以上のLEDを備える、請求項4に記載のデバイス。
- 前記LEDの2つ以上のストリングは、直列に電気接続された14のLEDを備える、請求項4に記載のデバイス。
- 前記複数の異なる配置形態は、
(i)直線配置、および/または
(ii)格子配置であって、前記LEDが少なくとも2つの方向に実質的に整列する、格子配置
を備える、請求項1に記載のデバイス。 - 発光デバイスであって、
基板と、
前記基板上に配設された、直列的に電気接続される発光ダイオード(LED)の1つまたは複数のストリングと、を備え、LEDの各ストリングは5つ以上のLEDを有し、第1のストリングの少なくともいくつかのLED同士は第1の距離にて離間され、第2のストリングの少なくともいくつかのLED同士は、第1の距離とは異なる第2の距離にて離間され、
前記第1のストリングのLEDが、異なる向きでダイ取付けされており、第1のストリングのLEDのいくつかが同ストリングの他のLEDに対して直角をなすように配置される、デバイス。 - 前記LEDの1つまたは複数のストリングは、ストリングを構成するLEDの1つまたは複数の配置形態を備える、請求項15に記載のデバイス。
- 前記1つまたは複数の配置形態は、
(i)チェッカーボード配置
(ii)直線配置
(iii)格子配置であって、前記LEDが少なくとも2つの方向に実質的に整列する、格子配置
のうち少なくとも2つを備える、請求項16に記載のデバイス。 - LEDの5つより多いストリングを備える、請求項15に記載のデバイス。
- LEDの10より多いストリングを備える、請求項15に記載のデバイス。
- LEDの30のストリングを備える、請求項15に記載のデバイス。
- LEDの各配置形態は14のLEDを備える、請求項16に記載のデバイス。
- LEDの各ストリングは5つのLEDを備える、請求項18に記載のデバイス。
- 64より多いLEDを備える、請求項15に記載のデバイス。
- 約16ボルト(V)以上の動作のために構成される、請求項15に記載のデバイス。
- 約16V以下の動作のために構成される、請求項15に記載のデバイス。
- 約42V以上の動作のために構成される、請求項15に記載のデバイス。
- 発光デバイスを提供する方法であって、
基板を用意するステップと、
複数の発光ダイオード(LED)を前記基板にアレイで取付けるステップであって、前記アレイは、ストリングを構成するLEDの1つまたは複数の配置形態を備え、前記複数のLEDを取付けるステップが、隣接するLED同士が各LEDの一側面を通る共通の水平ラインの上と下の両方に交互に配置されるチェッカーボードパターンを形成するよう隣接するLED同士が接続されるように、非直線状の配置形態でLEDを取付けることを含む、ステップと、
前記LEDのアレイの周りに保持材料を吐出するステップと、を含む方法。 - 前記複数のLEDを取付けるステップは、前記LEDを前記基板にダイ取付けするためにフラックスアシスト共晶、金属アシスト非共晶、または熱圧着を使用するステップを含む、請求項27に記載の方法。
- 前記複数のLEDを取付けるステップは、前記LEDを、前記基板の第1および第2の伝導性トレースに直列に電気接続するステップを含む、請求項27に記載の方法。
- 前記複数のLEDをアレイで取付けるステップは、LEDの1つまたは複数のストリングを前記基板に取付けるステップを含み、各ストリングは、直列に接続された5つ以上のLEDを備える、請求項27に記載の方法。
- LEDの1つまたは複数のストリングを取付けるステップは、LEDの5つより多いストリングを前記基板に取付けるステップを含む、請求項30に記載の方法。
- LEDの1つまたは複数のストリングを取付けるステップは、LEDの10より多いストリングを前記基板に取付けるステップを含む、請求項30に記載の方法。
- LEDの1つまたは複数のストリングを取付けるステップは、LEDの30のストリングを前記基板に取付けるステップを含む、請求項30に記載の方法。
- 前記複数のLEDをアレイで取付けるステップは、64より多いLEDを前記基板に取付けるステップを含む、請求項27に記載の方法。
- 複数のLEDを取付けるステップは、以下の配置形態、
(i)直線配置、および/または
(ii)格子配置であって、前記LEDが少なくとも2つの方向に実質的に整列する、格子配置
で前記LEDを取付けることを含む、請求項27に記載の方法。 - 発光デバイスであって、
基板と、
前記基板上にアレイで配設された複数の発光ダイオード(LED)と、
前記LEDのアレイの周りにてそのLEDのアレイに近接して少なくとも部分的に配設された保持材料とを備え、
前記LEDのアレイは、ストリングを構成するLEDの1つ又は複数の異なる配置形態を備え、前記複数のLEDの少なくとも一部は、LEDの別個のストリングを形成するためにワイヤボンドによって電気接続され、LEDの各ストリングは、前記保持材料によってカバーされる少なくとも1つのワイヤボンドを有し、LEDの少なくとも1つの配置形態は、隣接するLED同士が各LEDの一側面を通る共通の水平ラインの上と下の両方に交互に配置されるチェッカーボードパターンを形成するよう隣接するLED同士が接続されるように、非直線的である、デバイス。 - 64より多いLEDを備える、請求項36に記載のデバイス。
- 前記LEDはそれぞれ、約470μm以下の長さおよび約350μm以下の幅を有する、請求項36に記載のデバイス。
- 前記1つまたは複数の配置形態は、
(i)直線配置、および/または
(ii)格子配置であって、前記LEDが少なくとも2つの方向に実質的に整列する、格子配置
を備える、請求項36に記載のデバイス。 - 前記基板は、少なくとも1つの電気トレースにワイヤボンディングされる少なくとも1つのESDチップを備え、前記保持材料は、前記少なくとも1つのESDチップ上に吐出される、請求項36に記載のデバイス。
- 前記保持材料が反射材料を含む、請求項36に記載のデバイス。
- 前記保持材料が丸みを帯びた外壁を有する、請求項1又は36に記載のデバイス。
- LEDの1つまたは複数のストリングの周りに配設される保持材料をさらに備え、前記保持材料が丸みを帯びた外壁を有する、請求項15に記載のデバイス。
- 前記LEDが、第1のストリングにおける直列的に接続されたLED間のストリング内の間隔と、第1のストリングおよび直列的に接続された第2のストリングの間におけるストリング間の間隔とを備え、ストリング間の間隔が、ストリング内の間隔とは異なっている、請求項1、15、および36のいずれか一項に記載のデバイス。
- 前記LEDの少なくともいくつかが、前記LEDの別の少なくともいくつかと直角をなすように、前記LEDが異なる向きでダイ取付けされる、請求項1、および36のいずれか一項に記載のデバイス。
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2011
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- 2011-10-31 WO PCT/US2011/058603 patent/WO2012071139A2/en active Application Filing
- 2011-10-31 CN CN201180065495.0A patent/CN103329290B/zh active Active
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2014
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US10134961B2 (en) | 2012-03-30 | 2018-11-20 | Cree, Inc. | Submount based surface mount device (SMD) light emitter components and methods |
Also Published As
Publication number | Publication date |
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CN103329290B (zh) | 2017-09-29 |
WO2012071139A2 (en) | 2012-05-31 |
JP2014505994A (ja) | 2014-03-06 |
EP2643861A2 (en) | 2013-10-02 |
US9209354B2 (en) | 2015-12-08 |
CN103329290A (zh) | 2013-09-25 |
WO2012071139A3 (en) | 2012-07-12 |
TW201232813A (en) | 2012-08-01 |
TWI481072B (zh) | 2015-04-11 |
US20120126257A1 (en) | 2012-05-24 |
US20140183577A1 (en) | 2014-07-03 |
US8624271B2 (en) | 2014-01-07 |
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