JP4882236B2 - 電極コンタクト構造およびその製造方法 - Google Patents
電極コンタクト構造およびその製造方法 Download PDFInfo
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- JP4882236B2 JP4882236B2 JP2005026149A JP2005026149A JP4882236B2 JP 4882236 B2 JP4882236 B2 JP 4882236B2 JP 2005026149 A JP2005026149 A JP 2005026149A JP 2005026149 A JP2005026149 A JP 2005026149A JP 4882236 B2 JP4882236 B2 JP 4882236B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 239000010931 gold Substances 0.000 claims description 187
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 140
- 229910052737 gold Inorganic materials 0.000 claims description 137
- 229910052782 aluminium Inorganic materials 0.000 claims description 51
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 48
- 238000004544 sputter deposition Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 229910001020 Au alloy Inorganic materials 0.000 claims description 6
- 239000003353 gold alloy Substances 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 2
- 239000003870 refractory metal Substances 0.000 claims description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 abstract description 8
- 229910000765 intermetallic Inorganic materials 0.000 description 30
- -1 gold-aluminum Chemical compound 0.000 description 24
- 229910004298 SiO 2 Inorganic materials 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229940125810 compound 20 Drugs 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- JAXFJECJQZDFJS-XHEPKHHKSA-N gtpl8555 Chemical compound OC(=O)C[C@H](N)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@@H]1C(=O)N[C@H](B1O[C@@]2(C)[C@H]3C[C@H](C3(C)C)C[C@H]2O1)CCC1=CC=C(F)C=C1 JAXFJECJQZDFJS-XHEPKHHKSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- WZZBNLYBHUDSHF-DHLKQENFSA-N 1-[(3s,4s)-4-[8-(2-chloro-4-pyrimidin-2-yloxyphenyl)-7-fluoro-2-methylimidazo[4,5-c]quinolin-1-yl]-3-fluoropiperidin-1-yl]-2-hydroxyethanone Chemical compound CC1=NC2=CN=C3C=C(F)C(C=4C(=CC(OC=5N=CC=CN=5)=CC=4)Cl)=CC3=C2N1[C@H]1CCN(C(=O)CO)C[C@@H]1F WZZBNLYBHUDSHF-DHLKQENFSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Description
本発明のさらに他の目的は、このような電極コンタクト構造を有する自己走査型発光素子アレイを提供することにある。
(1)金電極の膜厚を薄くする、
(2)絶縁膜で覆われる金電極の周辺部の面積を小さくする、
(3)コンタクトホール面積を大きくする、
(4)電極自体をAu4Alで作る、
ことが考えられる。
(1)金電極周辺部と絶縁膜との重なり幅は1μm以下が望ましく、更に望ましくは0.5μm以下が望ましい。更に、重なり幅は0より大きいことが望ましい。
(2)金電極の膜厚は、0.1〜0.2μmの範囲が望ましい。
(3)コンタクトホールの面積は、16μm2以上が望ましく、更に望ましくは25μm2以上である。
発光動作のためのしきい電圧またはしきい電流を外部から制御するための第2の制御電極をそれぞれ有する複数の発光素子が配列されており、発光素子を発光させるための電流を供給する電流供給ラインが各々の発光素子に接続されている発光素子アレイと、
スイッチ素子の第1の制御電極と発光素子の第2の制御電極とを個々に接続している第3の電気的手段とを備えるとともに、
電流供給ラインが供給する電流の量が制御されることによって、スイッチ素子アレイに外部から書き込まれた各々の前記スイッチ素子のオン/オフ状態の情報が発光素子アレイに書き込まれ、かつ発光素子アレイに書き込まれたオン/オフ状態の情報が所望の期間だけ保持されるように構成されている。
12 金電極
14 SiO2絶縁膜
16 コンタクトホール
18 アルミニウム配線
20 金アルミニウム金属間化合物
30 金系合金膜
32 バリア金属膜
34 金膜
Claims (10)
- 金電極と、この金電極上の絶縁膜に開けられたコンタクトホールと、このコンタクトホールを介して金電極にオーミック接触するアルミニウム配線とから構成される電極コンタクト構造において、
前記金電極の膜厚は、0.1〜0.2μmであり、且つ当該金電極の周辺部と前記絶縁膜との重なり幅は、1μm以下であり、且つ前記コンタクトホールの大きさは、9μm2を超えることを特徴とする電極コンタクト構造。 - 前記コンタクトホールの大きさは、16μm2以上であることを特徴とする請求項1に記載の電極コンタクト構造。
- 前記コンタクトホールの大きさは、25μm2以上であることを特徴とする請求項1に記載の電極コンタクト構造。
- 前記金電極の形状は、矩形,円形,楕円形または長円形であることを特徴とする請求項1ないし3のいずれかに記載の電極コンタクト構造。
- Au4Al合金よりなる電極と、
前記電極上の絶縁膜に開けられたコンタクトホールと、
前記コンタクトホールを介して前記電極にオーミック接触するアルミニウム配線とから構成されることを特徴とする電極コンタクト構造。 - 金電極と、この金電極上の絶縁膜に開けられたコンタクトホールと、このコンタクトホールを介して金電極にオーミック接触するアルミニウム配線とから構成される電極コンタクト構造の製造方法において、
基板上に金電極を形成する工程と、
絶縁膜を設け、前記金電極上にコンタクトホールを開ける工程と、
アルミニウムを前記金電極上にスパッタリングで成膜するときに、前記金電極のすべてを、スパッタリングのエネルギーを用いてAu4Al化する工程と、
を含むことを特徴とする電極コンタクト構造の製造方法。 - 基板上にAu4Al合金よりなる電極を形成する工程と、
絶縁膜を設け、前記電極上にコンタクトホールを開ける工程と、
アルミニウムを前記電極上にスパッタリングで成膜する工程とを含み、
基板上にAu4Al合金よりなる電極を形成する前記工程は、金電極を形成する工程と、
前記金電極をAu4Al化する工程とを含むことを特徴とする電極コンタクト構造の製造方法。 - 金電極と、この金電極上の絶縁膜に開けられたコンタクトホールと、このコンタクトホールを介して金電極にオーミック接触するアルミニウム配線とから構成される電極コンタクト構造において、
前記金電極は、基板上に形成された金系合金膜と、この金系合金膜上に形成されたバリア金属膜と、このバリア金属膜上に形成された金膜との層構造であって、
前記金電極の膜厚は、0.1〜0.2μmであり、且つ当該金電極の周辺部と前記絶縁膜との重なり幅は、1μm以下であり、且つ前記コンタクトホールの大きさは、9μm2を超えることを特徴とする電極コンタクト構造。 - 前記バリア金属膜は、高融点金属よりなることを特徴とする請求項8に記載の電極コンタクト構造。
- PNPN構造の3端子発光サイリスタを用いた自己走査型発光素子アレイにおいて、
前記3端子発光サイリスタの電極コンタクト構造が、請求項1,2,3,4,5,8または9のいずれかに記載の電極コンタクト構造であることを特徴とする自己走査型発光素子アレイ。
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KR1020050032208A KR101042882B1 (ko) | 2004-04-28 | 2005-04-19 | 전극 콘택트 구조 및 그 제조방법 |
TW094112852A TWI385798B (zh) | 2004-04-28 | 2005-04-22 | Electrode contact structure and manufacturing method thereof |
CN2005100684793A CN1691286B (zh) | 2004-04-28 | 2005-04-28 | 电极接触结构及其制造方法 |
CN201010134380XA CN101814479B (zh) | 2004-04-28 | 2005-04-28 | 电极接触结构及其制造方法 |
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CN103993287B (zh) * | 2014-05-30 | 2017-01-04 | 天津大学 | 一种金电极的制备方法 |
US10937657B2 (en) * | 2016-10-28 | 2021-03-02 | Mitsubishi Electric Corporation | Semiconductor device including a reactant metal layer disposed between an aluminum alloy film and a catalyst metal film and method for manufacturing thereof |
CN110729387B (zh) * | 2019-10-24 | 2020-10-23 | 厦门乾照光电股份有限公司 | 发光二极管芯片及发光二极管芯片的制造方法 |
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