JP4819691B2 - 保護ダイオードを備えた発光半導体素子 - Google Patents
保護ダイオードを備えた発光半導体素子 Download PDFInfo
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- JP4819691B2 JP4819691B2 JP2006540151A JP2006540151A JP4819691B2 JP 4819691 B2 JP4819691 B2 JP 4819691B2 JP 2006540151 A JP2006540151 A JP 2006540151A JP 2006540151 A JP2006540151 A JP 2006540151A JP 4819691 B2 JP4819691 B2 JP 4819691B2
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- 239000004065 semiconductor Substances 0.000 title claims description 92
- 230000001681 protective effect Effects 0.000 title claims description 22
- 238000001465 metallisation Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000036961 partial effect Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 description 10
- 238000005530 etching Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- -1 AlAs Chemical compound 0.000 description 1
- 230000009471 action 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
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/06825—Protecting the laser, e.g. during switch-on/off, detection of malfunctioning or degradation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
- H01S5/0261—Non-optical elements, e.g. laser driver components, heaters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18308—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement
- H01S5/18311—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement using selective oxidation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18308—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement
- H01S5/18311—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement using selective oxidation
- H01S5/18313—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement using selective oxidation by oxidizing at least one of the DBR layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Semiconductor Lasers (AREA)
- Led Devices (AREA)
Description
本発明の課題は、発光性pn接合部の遮断方向でESD電圧パルスから非常に良好に保護され、かつその製造も比較的僅かなコストのみで可能となるような発光型半導体素子を提供することにある。
前記課題は請求項1の特徴部分に記載された本発明による発光型半導体素子によって解決される。
本発明の有利な構成例及び改善例は従属請求項の対象である。
それにより発光区分におけるその僅かな面積が故に非常に敏感な第1のpn接合部の損傷ないし破壊は、有利に回避されるようになる。
図1は、本発明による発光型半導体素子の概略断面図であり、図2は図1に示されている半導体素子の代替的ブロック回路図である。
図1に示されている発光型半導体素子は垂直共振器型レーザーダイオード(VCSEL)である。このVCSELは基板1を含んでおり、この基板上に半導体層列2が被着されている。さらに半導体層列2はnドープ半導体層領域3とpドープ半導体層領域4を含んでおり、それらの領域の間には第1のpn接合部5a,5bが形成されている。このpn接合部5a,5bは、絶縁区分6によって発光区分7と保護ダイオードに分割されている。保護ダイオード区分8の第1のpn接合部5bの面積は、発光区分7の第1のpn接合部5aの面積よりも大きく、有利にはその100倍以上である。
Claims (16)
- モノリシックに形成された半導体層列(2)を含み、
nドープ半導体層領域(3)とpドープ半導体層領域(4)が相互に連続しており、
前記領域(3,4)間に第1のpn接合部(5a,5b)が形成されおり、
前記第1のpn接合部(5a,5b)は、絶縁区分(6)によって発光区分(7)と保護ダイオード区分(8)に分割されている、発光型半導体素子において、
前記絶縁区分(6)が、pドープ半導体層領域(4)において発光区分(7)と保護ダイオード区分(8)を相互に電気的に絶縁しており、
前記pドープ半導体層領域(4)は、保護ダイオード区分(8)において第1のpn接合部(5b)とは反対側にnドープ層(9)を備え、該nドープ層(9)は、保護ダイオード区分(8)のpドープ半導体層領域(4)と共に第2のpn接合部(10)を形成し、さらに発光区分(7)のpドープ半導体層領域(4)と導電的に接続されており、
前記保護ダイオード区分(8)の第1のpn接合部(5b)は、発光区分(7)のものよりも大きい面積を有していることを特徴とする発光型半導体素子。 - 前記保護ダイオード区分(8)の第1のpn接合部(5b)は、発光区分(7)のものよりも少なくとも100倍だけ大きい、請求項1記載の発光型半導体素子。
- 半導体層列(2)が半導体基板(1)上に被着されている、請求項1または2記載の発光型半導体素子。
- 第1のコンタクト金属化部(11)が半導体基板(1)の半導体層列(2)とは反対側に被着され、第2のコンタクト金属化部(12)は、前記半導体基板(1)に対向している半導体層列(2)表面の部分領域上に被着されている、請求項3記載の発光型半導体素子。
- 前記nドープ半導体層領域(3)の少なくとも一部は、絶縁区分(6)によって中断されていない、請求項1から4いずれか1項記載の発光型半導体素子。
- 前記絶縁区分(6)は、半導体基板(1)に対向している半導体層列(2)表面からnドープ半導体層領域(3)内まで延在している、請求項3から5いずれか1項記載の発光型半導体素子。
- 前記発光区分(7)は、垂直共振器型レーザーダイオード(VCSEL)によって形成されている、請求項1から6いずれか1項記載の発光型半導体素子。
- 前記第1のpn接合部(5a,5b)は、第1のブラッグ反射器層列と第2のブラッグ反射器層列の間に配設されており、前記ブラッグ反射器層列の各々は複数の層対を有しており、さらに前記2つのブラッグ反射器層列は、レーザー共振器を形成しており、この場合2つのブラッグ反射器層列のうちの一方が第1のpn接合部(5a)内で生成されたレーザービーム(18)に対して部分透過性である、請求項7記載の発光型半導体素子。
- 前記2つのブラッグ反射器層列の一方に、垂直共振器レーザーダイオードの作動中に発光区分(7)の第1のpn接合部(5a)を通流する作動電流を空間的に制限する少なくとも1つの電流開口(14)が設けられている、請求項8記載の発光型半導体素子。
- 前記第2のコンタクト金属化部(12)は、その非被覆領域が光射出開口(17)として残るように前記発光区分の表面を部分的に覆っている、請求項4から9いずれか1項記載の発光型半導体素子。
- 前記絶縁区分(6)は、トレンチ(19)として形成されている、請求項1から10いずれか1項記載の発光型半導体素子。
- 前記発光区分(7)と保護ダイオード区分(8)は、トレンチ(19)側方にメサ型構造を有している、請求項11記載の発光型半導体素子。
- 前記トレンチ(19)は、絶縁層(16)を備えた面によって仕切られている、請求項11または12記載の発光型半導体素子。
- 前記トレンチ(19)に、第2のコンタクト金属化部(12)を形成する材料が補充されている請求項13記載の発光型半導体素子。
- 前記絶縁区分(6)は、打込みプロセスまたは拡散若しくは酸化プロセスによって形成されている、請求項1から10いずれか1項記載の発光型半導体素子。
- 前記半導体層のnドープとpドープが相互に入れ替えられている、請求項1から15いずれか1項記載の発光型半導体素子。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10356283 | 2003-11-28 | ||
DE10356283.4 | 2003-11-28 | ||
DE102004005269A DE102004005269B4 (de) | 2003-11-28 | 2004-02-03 | Lichtemittierendes Halbleiterbauelement mit einer Schutzdiode |
DE102004005269.7 | 2004-02-03 | ||
PCT/DE2004/002384 WO2005055379A1 (de) | 2003-11-28 | 2004-10-26 | Lichtemittierendes halbleiterbauelement mit einer schutzdiode |
Publications (2)
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JP2007512689A JP2007512689A (ja) | 2007-05-17 |
JP4819691B2 true JP4819691B2 (ja) | 2011-11-24 |
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US (1) | US7693201B2 (ja) |
JP (1) | JP4819691B2 (ja) |
CN (1) | CN100459329C (ja) |
DE (2) | DE102004005269B4 (ja) |
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2004
- 2004-02-03 DE DE102004005269A patent/DE102004005269B4/de not_active Expired - Fee Related
- 2004-10-26 US US10/580,969 patent/US7693201B2/en active Active
- 2004-10-26 CN CNB2004800353421A patent/CN100459329C/zh not_active Expired - Lifetime
- 2004-10-26 DE DE502004008664T patent/DE502004008664D1/de not_active Expired - Lifetime
- 2004-10-26 JP JP2006540151A patent/JP4819691B2/ja not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
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DE102004005269B4 (de) | 2005-09-29 |
CN100459329C (zh) | 2009-02-04 |
US20070258500A1 (en) | 2007-11-08 |
DE502004008664D1 (de) | 2009-01-22 |
US7693201B2 (en) | 2010-04-06 |
JP2007512689A (ja) | 2007-05-17 |
DE102004005269A1 (de) | 2005-06-30 |
CN1886874A (zh) | 2006-12-27 |
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