JP5072197B2 - レーザ照射装置およびレーザ照射方法 - Google Patents
レーザ照射装置およびレーザ照射方法 Download PDFInfo
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- JP5072197B2 JP5072197B2 JP2005173715A JP2005173715A JP5072197B2 JP 5072197 B2 JP5072197 B2 JP 5072197B2 JP 2005173715 A JP2005173715 A JP 2005173715A JP 2005173715 A JP2005173715 A JP 2005173715A JP 5072197 B2 JP5072197 B2 JP 5072197B2
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Description
2 シリンドリカルレンズアレイ
3 シリンドリカルレンズアレイ
4 シリンドリカルレンズアレイ
5 シリンドリカルレンズアレイ
6 シリンドリカルレンズアレイ
7 ミラー
8 ダブレットシリンドリカルレンズ
9 照射面
11 レーザ発振器
12 ミラー
13 凸レンズ
14 ビーム
15 照射面
101 レーザ発振器
102 偏光板
103 偏光板
104 ミラー
105 凸レンズ
106 非単結晶半導体膜
107 基板
108 X軸ステージ
109 Y軸ステージ
110 回折光学素子
120 ビーム
121 入射光
1000 基板
1001 下地膜
1002 非晶質半導体膜
1003 結晶性半導体膜
1005 凸レンズ
1006 半導体膜
1007 ゲート絶縁膜
1008 ゲート電極
1009 ソース領域
1010 ドレイン領域
1011 LDD領域
1012 Nチャネル型TFT
1013 Pチャネル型TFT
1014 Nチャネル型TFT
1015 絶縁膜
1016 絶縁膜
1017 配線
1018 絶縁膜
1101 筐体
1102 支持台
1103 表示部
1104 スピーカー部
1105 ビデオ入力端子
1111 筐体
1112 表示部
1113 キーボード
1114 外部接続ポート
1115 ポインティングマウス
1121 筐体
1122 表示部
1123 操作キー
Claims (11)
- レーザ発振器と、ビーム強度可変手段と、凸レンズまたは回折光学素子を有し、
レーザ光を非単結晶半導体膜の照射面に対して斜め方向に入射するように設定されたレーザ照射装置であり、
前記レーザ光は、矩形状、線状または楕円状であり、前記照射面に対し往路と前記往路に対し180度反対方向の復路で照射領域を移動して相対的に走査するとともに、
前記ビーム強度可変手段は、前記照射面が前記レーザ光の入射方向と反対方向に移動する前記往路または前記復路時の前記レーザ光のビーム強度を、前記照射面が前記レーザ光の入射方向と同方向に移動する前記復路または前記往路時の前記レーザ光のビーム強度より弱くして前記非単結晶半導体膜を結晶化し、前記往路と前記復路で前記ビーム強度を変えないものに比べて前記往路及び前記復路での結晶化の均一性を向上することを特徴とするレーザ照射装置。 - 請求項1において、前記凸レンズまたは前記回折光学素子を通過して前記照射面に照射される前記レーザ光のビーム形状は矩形状、線状、または楕円状であることを特徴とするレーザ照射装置。
- 請求項1または請求項2において、前記ビーム強度可変手段は、偏光板またはNDフィルターであることを特徴とするレーザ照射装置。
- 請求項3において、前記偏光板は、複数個であることを特徴とするレーザ照射装置。
- 請求項1乃至4のいずれか一項において、前記レーザ発振器からのレーザは、連続発振またはパルス発振の固体レーザまたは気体レーザまたは金属レーザであることを特徴とするレーザ照射装置。
- 請求項5において、前記レーザ発振器からのレーザは、単結晶のYAG、YVO4、YLF、YAlO3、GdVO4、または多結晶のYAG、Y2O3、YVO4、YAlO3、GdVO4に、ドーパントとしてNd、Yb、Cr、Ti、Ho、Er、Tm、Taのうち1種または複数種添加されているものを媒質とするレーザ、ガラスレーザ、ルビーレーザ、アレキサンドライドレーザ、Ti:サファイアレーザから選ばれた一種であることを特徴とするレーザ照射装置。
- 請求項5において、前記レーザ発振器からのレーザは、Arレーザ、Krレーザ、CO2レーザから選ばれた一種であることを特徴とするレーザ照射装置。
- 請求項5において、前記レーザ発振器からのレーザは、10MHz以上の周波数でパルス発振を行うレーザであることを特徴とするレーザ照射装置。
- 請求項8において、前記レーザ発振器からのレーザは、単結晶のGdVO4、YVO4、YAG、または多結晶のYAG、Y2O3、YVO4、YAlO3、GdVO4に、ドーパントとしてNd、Yb、Cr、Ti、Ho、Er、Tm、Taのうち1種または複数種添加されているものを媒質とするレーザであることを特徴とするレーザ照射装置。
- 請求項1乃至9のいずれか一項において、前記レーザ発振器からのレーザは、非線形光学素子により高調波に変換されていることを特徴とするレーザ照射装置。
- レーザ発振器より第1のレーザ光を発振し、
前記第1のレーザ光を、往路と復路でビーム強度を変えるビーム強度可変手段を通して第2のレーザ光とし、
前記第2のレーザ光を凸レンズまたは回折光学素子を通して矩形状、線状または楕円状の第3のレーザ光とし、
前記第3のレーザ光を非単結晶半導体膜の照射面に対して斜めから入射するとともに前記照射面に対して往路と前記往路に対し180度反対方向の復路で照射領域を移動して相対的に走査し、
前記ビーム強度可変手段は、前記照射面が前記レーザ光の入射方向と反対方向に移動する前記往路または前記復路時の前記ビーム強度を、前記照射面が前記レーザ光の入射方向と同方向に移動する前記復路または前記往路時の前記ビーム強度より弱くして前記非単結晶半導体膜を結晶化し、前記往路と前記復路で前記ビーム強度を変えないものに比べて前記往路及び前記復路での結晶化の均一性を向上することを特徴とするレーザ照射方法。
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JP2011071261A (ja) * | 2009-09-25 | 2011-04-07 | Ushio Inc | レーザーアニール装置 |
KR20110114972A (ko) * | 2010-04-14 | 2011-10-20 | 삼성전자주식회사 | 레이저 빔을 이용한 기판의 가공 방법 |
US20120225568A1 (en) * | 2011-03-03 | 2012-09-06 | Tokyo Electron Limited | Annealing method and annealing apparatus |
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JP5861494B2 (ja) * | 2012-02-23 | 2016-02-16 | 三菱マテリアル株式会社 | レーザ加工装置およびレーザ加工方法 |
JP2013193110A (ja) * | 2012-03-21 | 2013-09-30 | Sumitomo Heavy Ind Ltd | レーザ加工装置及びレーザ加工方法 |
CN102922142A (zh) * | 2012-10-30 | 2013-02-13 | 张立国 | 一种激光加工的方法 |
JP5725518B2 (ja) * | 2013-04-17 | 2015-05-27 | 株式会社日本製鋼所 | レーザ光遮蔽部材、レーザ処理装置およびレーザ光照射方法 |
JP2017528922A (ja) * | 2014-07-03 | 2017-09-28 | アイピージー フォトニクス コーポレーション | ファイバーレーザーによってアモルファスシリコン基板を均一に結晶化させるための方法及びシステム |
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