JP5090690B2 - 半導体薄膜の製造方法、薄膜トランジスタの製造方法、及び半導体薄膜の製造装置 - Google Patents
半導体薄膜の製造方法、薄膜トランジスタの製造方法、及び半導体薄膜の製造装置 Download PDFInfo
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Description
まず、本実施の形態にかかる薄膜トランジスタ(TFT)が用いられるTFTアレイ基板について図1を用いて説明する。図1は、TFTアレイ基板の構成を示す平面模式図である。また、TFTアレイ基板は、液晶表示装置やEL表示装置等の平面型表示装置(フラットパネルディスプレイ)に用いられる。また、EL表示装置には、有機EL表示装置、無機EL表示装置がある。
5 多結晶半導体薄膜、6 結晶粒、7 結晶粒界、8 ゲート絶縁膜、
9 第1の導電膜、10 ゲート電極、11 層間絶縁膜、12レーザー光、
13 ソース電極、14 ドレイン電極、15 コンタクトホール、16 ソース領域、
17 ドレイン領域、18 チャネル領域、19 λ/4波長板、
20 レーザー光発振器、21 ステージ、22 ビーム成形光学系、23 ミラー、
24 駆動モーター、25 制御部、
100 TFTアレイ基板、101 表示領域、102 額縁領域、
103 走査信号駆動回路、104 表示信号駆動回路、105 画素、
106 外部配線、107 外部配線、108 TFT、109 ゲート信号線、
110 ソース信号線
Claims (9)
- 基板上に非晶質半導体薄膜を形成する工程と、
前記非晶質半導体薄膜にレーザー光を照射することにより、格子状に整列した結晶粒を有する多結晶化された半導体薄膜を形成する工程とを備え、
前記結晶粒の大きさは、照射する前記レーザー光の発振波長の略半分となる半導体薄膜の製造方法。 - 前記レーザー光がNd:YAGレーザーの第2高調波である請求項1に記載の半導体薄膜の製造方法。
- 前記多結晶化された半導体薄膜の表面粗さにおける平均粗さRaが3nm以下である請求項1又は2に記載の半導体薄膜の製造方法。
- 前記多結晶化された半導体薄膜がポリシリコン膜から形成される請求項1乃至3のいずれかに記載の半導体薄膜の製造方法。
- 前記結晶粒の配列方向がレーザー照射走査方向と垂直である請求項1乃至4のいずれかに記載の半導体薄膜の製造方法。
- 前記レーザー光の偏光が円偏光となっている請求項1乃至5のいずれかに記載の半導体薄膜の製造方法。
- 請求項1乃至6のいずれかに記載の半導体薄膜の製造方法を有する薄膜トランジスタの製造方法。
- 前記半導体薄膜のチャネルの向きが、前記格子状に整列した結晶粒とほぼ同じ方向に配置されている請求項7に記載の薄膜トランジスタの製造方法。
- 非晶質の半導体薄膜にレーザー光を照射することにより多結晶化された半導体薄膜の製造装置であって、
照射される前記レーザー光に円偏光を生じさせる円偏光手段と、
前記非晶質の半導体薄膜上から前記レーザー光を照射する照射手段とを備え、
結晶粒が格子状に整列し、
前記結晶粒の大きさが前記レーザー光の発振波長の略半分となる半導体薄膜の製造装置。
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TW096125377A TW200814163A (en) | 2006-08-28 | 2007-07-12 | Semiconductor thin film, thin film transistor, method of manufacturing the semiconductor thin film, method of manufacturing the thin film transistor, and manufacturing device of semiconductor thin film |
US11/836,312 US7732815B2 (en) | 2006-08-28 | 2007-08-09 | Semiconductor thin film, thin film transistor, method of manufacturing the semiconductor thin film, method of manufacturing the thin film transistor, and manufacturing device of semiconductor thin film |
KR1020070084821A KR100915160B1 (ko) | 2006-08-28 | 2007-08-23 | 반도체 박막, 박막 트랜지스터, 그것들의 제조 방법 및반도체 박막의 제조 장치 |
CN200710148148XA CN101136429B (zh) | 2006-08-28 | 2007-08-28 | 半导体薄膜、薄膜晶体管、其制造方法以及半导体薄膜的制造装置 |
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