JP2009519605A - 複数の発光セルが配列された発光素子 - Google Patents
複数の発光セルが配列された発光素子 Download PDFInfo
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- 239000000758 substrate Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000004065 semiconductor Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 238000005530 etching Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000151 deposition Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L24/39—Structure, shape, material or disposition of the strap connectors after the connecting process
- H01L24/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
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- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L24/36—Structure, shape, material or disposition of the strap connectors prior to the connecting process
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- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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- H—ELECTRICITY
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- 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]
- H05B45/40—Details of LED load circuits
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L2224/36—Structure, shape, material or disposition of the strap connectors prior to the connecting process
- H01L2224/37—Structure, shape, material or disposition of the strap connectors prior to the connecting process of an individual strap connector
- H01L2224/37001—Core members of the connector
- H01L2224/37099—Material
- H01L2224/371—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
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- H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L2224/39—Structure, shape, material or disposition of the strap connectors after the connecting process
- H01L2224/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
- H01L2224/401—Disposition
- H01L2224/40135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/40137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L24/36—Structure, shape, material or disposition of the strap connectors prior to the connecting process
- H01L24/37—Structure, shape, material or disposition of the strap connectors prior to the connecting process of an individual strap connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
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- H01L33/00—Semiconductor devices having potential barriers 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 having potential barriers 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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
Description
好ましくは、前記ダイオードの大きさは、前記発光セルの大きさの80%以下である。
好ましくは、前記複数のダイオードには、少なくとも1つの発光ダイオードが設けられ
る。
しかしながら、本発明は、以下に開示される実施例に限定されるものではなく、互いに異なる様々な形態に具現され、但し、本実施例は、本発明の開示が完全になるようにし、通常の知識を有する者に発明の範疇を完全に知らせるために提供されるものである。図面上の同一の符号は、同一の要素を指す。
本発明による発光素子は、図3に示すように、基板100と、発光セルブロック140と、ブリッジ整流回路120と、配線260とを備える。前記発光セルブロック140は、前記基板100上に設けられたまま、直列で連結された複数個の発光セル141からなる。前記ブリッジ整流回路120は、前記基板100上に設けられたまま、前記発光セルブロック140の周辺部を取り囲む複数個のダイオード121からなる。前記発光セルブロック140とブリッジ整流回路120は、配線260により連結される。この際、前記発光素子は、前記ブリッジ整流回路120に外部電源を印加し、ブリッジ整流回路120により直流に整流された常時印加電流を、発光セルブロック140に印加するための電極160をさらに備えてもよい。
た基板100上にさらに多数の発光セル141が形成され、発光セル141の個数の増加は、発光素子の全体の輝度を上昇させる。また、前記ブリッジ整流回路120は、発光セルブロック140よりも光量は少ないが、4つのうち2つのダイオードブロックから光を常時放出するので、発光素子の輝度をさらに上昇させることができる。
本発明によるブリッジ整流回路120が設けられた発光素子は、4つで構成された電極160のうち第1の電極160aと第3の電極160cに外部の交流電源が印加されると、順方向電圧である場合、第2のダイオードブロック120bと第3のダイオードブロック120cは、オン状態となり、第1のダイオードブロック120aと第4のダイオードブロック120dは、オフ状態となる。したがって、第1のダイオードブロック120aは、第1の電極160aに印加された電流に対して逆バイアスであるので、電流が流れず、電流は、前記第2のダイオードブロック120bに流れるようになる。また、前記第2のダイオードブロック120bに流れた電流は、第4のダイオードブロック120dに対して逆バイアスであるので、発光セルブロック140に流れるようになる。以降、発光セルブロック140に印加された電流は、第3のダイオードブロック120cに出るようになる。
以下、上述した発光素子の製造方法を、図5乃至図7を参照して説明する。先ず、基板
100上に、ドープされていない窒化ガリウム(GaN)層(図示せず)をバッファ層として形成する。前記バッファ層上に、N型半導体層200、活性層220、及びP型半導体層240を順次に結晶成長させる(図5)。この際、P型半導体層240上に、透明電極層(図示せず)をさらに形成してもよい。それぞれの層は、上述した物質を蒸着するための様々な蒸着方法により形成させる。
前記工程を行った後、各発光セルのN型半導体層200が露出するように、P型半導体層240及び活性層220をエッチングする。上述のように、単一のマスクを用いてエッチングを行ってもよいが、それぞれ異なるマスクを用いてエッチングを行ってもよい。すなわち、基板100を露出させる第1のマスクを用いた第1のエッチングを行ってから、N型半導体層200を露出させるために、P型半導体層240及び活性層220の所定の領域を露出させる第2のマスクを用いた第2のエッチングを行ってもよい。
形成し、P型半導体層240上にP-電極(図示せず)を形成する。
以降、前記N型半導体層200上のN-電極と、隣接したP型半導体層240上のP-電極を、所定のブリッジ工程又はステップカバレッジ等を用いて配線260で連結することにより、図3のような発光素子を完成する(図7)。この際、前記P型半導体層240上にP-電極が透明電極として形成される場合、透明電極の一部をフォト工程でエッチング
し、P型半導体層240を露出させ、P型ボンディングパッド(図示せず)が形成されてもよい。
120 ブリッジ整流回路
121 ダイオード
140 発光セルブロック
141 発光セル
160 電極
200 N型半導体層
220 活性層
240 P型半導体層
260 配線
Claims (9)
- 複数個の発光セルを有する発光セルブロックと、
前記発光セルブロックの入出力端子と連結されたブリッジ整流回路とを備え、
前記ブリッジ整流回路は、ノードとノードとの間に複数のダイオードを有することを特徴とする発光素子。 - 前記複数のダイオードの個数は、前記発光セルブロック内の前記発光セルの個数の100〜200%であることを特徴とする請求項1に記載の発光素子。
- 前記複数のダイオードの個数は、前記発光セルブロック内の前記発光セルの個数の100〜130%であることを特徴とする請求項1に記載の発光素子。
- 前記複数のダイオードのそれぞれの大きさは、前記発光セルの大きさの80%以下であることを特徴とする請求項1に記載の発光素子。
- 前記発光セルブロック及びブリッジ整流回路は、同一の基板上に形成されることを特徴とする請求項1に記載の発光素子。
- 前記複数のダイオードには、少なくとも1つの発光ダイオードが設けられたことを特徴とする請求項1乃至5のいずれか一項に記載の発光素子。
- 前記ブリッジ整流回路に設けられた複数のダイオードは、前記発光セルブロックを取り囲むように配列されたことを特徴とする請求項1乃至5のいずれか一項に記載の発光素子。
- 前記各ノードをなす少なくとも2つの電極は、前記複数のダイオードがなす配列内に位置することを特徴とする請求項7に記載の発光素子。
- 前記発光素子は、全体形状が四角形であることを特徴とする請求項1乃至5のいずれか一項に記載の発光素子。
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KR20050124882A KR100968843B1 (ko) | 2005-12-16 | 2005-12-16 | 다수의 발광셀이 어레이된 발광소자 |
KR10-2005-0124882 | 2005-12-16 | ||
PCT/KR2006/005186 WO2007083885A1 (en) | 2005-12-16 | 2006-12-05 | Light emitting device with light emitting cells arrayed |
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JP2009275101A Division JP4690482B2 (ja) | 2005-12-16 | 2009-12-03 | 複数の発光セルが配列された発光素子 |
JP2010260444A Division JP5193271B2 (ja) | 2005-12-16 | 2010-11-22 | 複数の発光セルが配列された発光素子 |
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JP2009519605A true JP2009519605A (ja) | 2009-05-14 |
JP4694631B2 JP4694631B2 (ja) | 2011-06-08 |
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JP2009275101A Expired - Fee Related JP4690482B2 (ja) | 2005-12-16 | 2009-12-03 | 複数の発光セルが配列された発光素子 |
JP2010260444A Expired - Fee Related JP5193271B2 (ja) | 2005-12-16 | 2010-11-22 | 複数の発光セルが配列された発光素子 |
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JP2010260444A Expired - Fee Related JP5193271B2 (ja) | 2005-12-16 | 2010-11-22 | 複数の発光セルが配列された発光素子 |
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US (2) | US8054002B2 (ja) |
JP (3) | JP4694631B2 (ja) |
KR (1) | KR100968843B1 (ja) |
CN (2) | CN101924117A (ja) |
DE (2) | DE112006002702B4 (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010226119A (ja) * | 2007-01-11 | 2010-10-07 | Yiguang Electronic Ind Co Ltd | 交流式発光ダイオード装置 |
JP2010283354A (ja) * | 2009-06-08 | 2010-12-16 | Shogen Koden Kofun Yugenkoshi | 発光ダイオード及びその製造方法 |
JP2011040791A (ja) * | 2005-12-16 | 2011-02-24 | Seoul Opto Devices Co Ltd | 複数の発光セルが配列された発光素子 |
KR20140084580A (ko) * | 2012-12-27 | 2014-07-07 | 엘지이노텍 주식회사 | 발광 소자 |
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TWI371870B (en) * | 2006-11-08 | 2012-09-01 | Epistar Corp | Alternate current light-emitting device and fabrication method thereof |
US11297705B2 (en) | 2007-10-06 | 2022-04-05 | Lynk Labs, Inc. | Multi-voltage and multi-brightness LED lighting devices and methods of using same |
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US8461613B2 (en) * | 2008-05-27 | 2013-06-11 | Interlight Optotech Corporation | Light emitting device |
KR101001242B1 (ko) * | 2008-08-22 | 2010-12-17 | 서울옵토디바이스주식회사 | 교류용 발광 다이오드 |
WO2010050694A2 (ko) * | 2008-10-29 | 2010-05-06 | 서울옵토디바이스주식회사 | 발광 다이오드 |
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TWM374153U (en) | 2009-03-19 | 2010-02-11 | Intematix Technology Ct Corp | Light emitting device applied to AC drive |
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JP4694631B2 (ja) | 2011-06-08 |
US20120013260A1 (en) | 2012-01-19 |
JP2011040791A (ja) | 2011-02-24 |
US8294386B2 (en) | 2012-10-23 |
TW201117645A (en) | 2011-05-16 |
JP2010093279A (ja) | 2010-04-22 |
DE112006004221B4 (de) | 2015-08-20 |
CN101305476B (zh) | 2011-08-24 |
WO2007083885A1 (en) | 2007-07-26 |
US20080218098A1 (en) | 2008-09-11 |
JP5193271B2 (ja) | 2013-05-08 |
DE112006002702T5 (de) | 2008-07-24 |
US8054002B2 (en) | 2011-11-08 |
KR20070064208A (ko) | 2007-06-20 |
CN101924117A (zh) | 2010-12-22 |
JP4690482B2 (ja) | 2011-06-01 |
TW200731863A (en) | 2007-08-16 |
KR100968843B1 (ko) | 2010-07-09 |
TWI430698B (zh) | 2014-03-11 |
TWI410169B (zh) | 2013-09-21 |
CN101305476A (zh) | 2008-11-12 |
DE112006002702B4 (de) | 2012-11-29 |
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