JP4836446B2 - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP4836446B2 JP4836446B2 JP2004359559A JP2004359559A JP4836446B2 JP 4836446 B2 JP4836446 B2 JP 4836446B2 JP 2004359559 A JP2004359559 A JP 2004359559A JP 2004359559 A JP2004359559 A JP 2004359559A JP 4836446 B2 JP4836446 B2 JP 4836446B2
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Description
本実施の形態では、有機半導体装置に半導体素子として用いられる有機薄膜トランジスタの形成方法について説明する。図1に示すように、絶縁表面上にゲート電極として機能する導電膜(以下、ゲート電極と表記する)101と、ゲート電極101を覆って設けられたゲート絶縁膜として機能する絶縁膜(以下、ゲート絶縁膜と表記する)102と、ゲート絶縁膜を介して設けられたソース電極及びドレイン電極として機能する導電膜(以下、ソース電極及びドレイン電極と表記する)103とが形成された素子基板110を用意する。このとき好ましくは、ゲート電極の端部にかかるようにゲート絶縁膜を介してソース電極及びドレイン電極を設けるとよい。
を形成することが出来る。また、フィルム状保護膜形成後に、接着剤および有機半導体膜の融点以下で基板に加熱処理を施してもよい。
本実施の形態では、実施の形態1とは異なり、有機半導体膜形成後、ソース電極及びドレイン電極を形成する、トップコンタクト型構造の有機薄膜トランジスタを、図3を用いて説明する。
本実施の形態では、上記実施の形態1に示したボトムコンタクト型のトランジスタを用いて形成する有機半導体装置について説明する。なお、有機半導体装置として発光装置を用いて説明する。
(1)フィルム状の保護体で覆う前の有機TFTの電気特性
(2)フィルム状の保護体で覆った後の有機TFTの電気特性
図6には条件(1),(2)におけるVdとして−10Vの電圧を印加したときの、ドレイン電極の電流とゲート電圧とを測定したVg−Id特性の結果を示す。図6より、蒸着後に有機半導体膜上をフィルム状の保護体で覆う前後で、Vg−Id特性の変化がないことが分かる。以上から、有機半導体膜上をフィルム状の保護体で覆うことによる有機TFTの特性の劣化はないことが分かる。
(1)有機半導体膜上をフィルム状の保護体で覆い168時間大気中で放置した後の電気特性
(2)蒸着後そのまま168時間大気中で放置した後の有機TFTの電気特性
図7には条件(1),(2)におけるVdとして−10Vの電圧を印加したときの、ドレイン電極の電流とゲート電極の電圧とを測定したVg−Id特性の結果を示す。図7より、(1),(2)を比較すると、有機半導体膜上をフィルム状の保護体で覆うことで、Vg−Id特性のON電流の減少や閾値のプラス方向へのシフトを防げることが分かる。以上から、有機半導体膜上をフィルム状の保護体で覆うことにより、有機半導体を大気に晒されて、水や光及び酸素に触れることによる酸化や分解から保護することが可能であることが分かる。
102 ゲート絶縁膜
103 ドレイン電極
104 有機半導体膜
105 保護体
110 素子基板
201 テープロール
202 テープ
203 ローラー
204 有機半導体膜
301 ゲート電極
302 ゲート絶縁膜
303 有機半導体膜
304 導電膜
310 素子基板
305 保護体
400 素子基板
401 ゲート電極
402 ゲート絶縁膜
403 ドレイン電極
404 画素電極
405 絶縁物
406 電界発光層
407 共通電極
408 有機半導体膜
409 支持体
410 接着剤
411 下地層
801 画素領域
901 点線領域
902 スイッチング用トランジスタ
903 駆動用トランジスタ
904 発光素子
905 容量素子
1001 基板
1002 シート
1003 ローラー
1101 表示部
1102 本体
1103 アンテナ
1104 音声出力部
1105 音声入力部
1106 操作スイッチ
1111 表示部
1112 筐体
1113 スピーカー
1121 支持体
1122 表示部
1123 集積回路チップ
1124 集積回路
Claims (3)
- 絶縁表面を有する基板上に、ゲート電極と、前記ゲート電極上の絶縁膜と、前記絶縁膜上の有機半導体膜と、を有するトランジスタを形成し、
前記有機半導体膜表面に接着剤を介してフィルムを貼り付けることを特徴とする半導体装置の作製方法。 - 絶縁表面を有する基板上にゲート電極を形成し、
前記ゲート電極上に絶縁膜を形成し、
前記絶縁膜上に一対の電極を形成し、
前記絶縁膜上に、前記一対の電極の一方と電気的に接続する第1の電極を形成し、
前記第1の電極上に電界発光層を形成し、
前記電界発光層上に第2の電極を形成し、
前記絶縁膜上及び前記一対の電極上に有機半導体膜を形成し、
前記有機半導体膜表面に接着剤を介してフィルムを貼り付けることを特徴とする半導体装置の作製方法。 - 請求項2において、
前記第2の電極表面及び前記一対の電極表面にも前記接着剤を介して前記フィルムを貼り付けることを特徴とする半導体装置の作製方法。
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JP5521270B2 (ja) | 2007-02-21 | 2014-06-11 | 凸版印刷株式会社 | 薄膜トランジスタアレイ、薄膜トランジスタアレイの製造方法、および薄膜トランジスタアレイを用いたアクティブマトリクス型ディスプレイ |
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