JP5072202B2 - 表示装置の作製方法 - Google Patents
表示装置の作製方法 Download PDFInfo
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- JP5072202B2 JP5072202B2 JP2005220492A JP2005220492A JP5072202B2 JP 5072202 B2 JP5072202 B2 JP 5072202B2 JP 2005220492 A JP2005220492 A JP 2005220492A JP 2005220492 A JP2005220492 A JP 2005220492A JP 5072202 B2 JP5072202 B2 JP 5072202B2
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Landscapes
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
本実施の形態における薄膜トランジスタの作製方法を、図1乃至図6を用いて詳細に説明する。
本発明の実施の形態を、図7乃至図9を用いて説明する。本実施の形態は、実施の形態1で作製した表示装置において、第2の層間絶縁層を形成しない例を示す。よって、同一部分又は同様な機能を有する部分の繰り返しの説明は省略する。
本発明の実施の形態を、図10を用いて説明する。本実施の形態は、実施の形態1で作製した表示装置において、薄膜トランジスタのゲート電極層の構造が異なる例を示す。よって、同一部分又は同様な機能を有する部分の繰り返しの説明は省略する。
本発明を適用して発光素子を有する表示装置を形成することができるが、該発光素子から発せられる光は、下面放射、上面放射、両面放射のいずれかを行う。本実施の形態では、両面出射型、上面出射型の例を、図11及び図12を用いて説明する。
走査線側入力端子部と信号線側入力端子部とに保護ダイオードを設けた一態様について図15を参照して説明する。図15において画素2702にはTFT501、TFT502、容量素子504、発光素子503が設けられている。このTFTは実施の形態1と同様な構成を有している。
本発明によって形成される表示装置によって、テレビジョン装置を完成させることができる。表示パネルには、図16(A)で示すような構成として画素部のみが形成されて走査線側駆動回路と信号線側駆動回路とが、図17(B)のようなTAB方式により実装される場合と、図17(A)のようなCOG方式により実装される場合と、図16(B)に示すようにSASでTFTを形成し、画素部と走査線側駆動回路を基板上に一体形成し信号線側駆動回路を別途ドライバICとして実装する場合、また図16(C)のように画素部と信号線側駆動回路と走査線側駆動回路を基板上に一体形成する場合などがあるが、どのような形態としても良い。
本発明を適用して、様々な表示装置を作製することができる。即ち、それら表示装置を表示部に組み込んだ様々な電子機器に本発明を適用できる。
Claims (8)
- 半導体層を有するトランジスタ上に、前記半導体層に達する第1の開口を有する第1の絶縁層を形成し、
配線層、及び前記半導体層と前記第1の開口において電気的に接続されるソース電極層又はドレイン電極層を、前記第1の絶縁層上に形成し、
前記第1の絶縁層、前記ソース電極層又はドレイン電極層、及び前記配線層上に、前記ソース電極層又はドレイン電極層に達する第2の開口及び前記配線層に達する第3の開口を有する第2の絶縁層を形成し、
前記ソース電極層又はドレイン電極層と前記第2の開口において電気的に接続される第1の電極層を、前記第2の絶縁層上に形成し、
前記第2の絶縁層、前記配線層、及び前記第1の電極層上に、前記第1の電極層に達する第4の開口及び前記配線層に達する第5の開口を有する第3の絶縁層を形成し、
前記第4の開口であって、前記第1の電極層上に、発光層及び第2の電極層を形成し、
前記第3の絶縁層は、前記第3の開口における前記第2の絶縁層の側面を覆い、
前記第2の電極層は、前記第5の開口における前記第3の絶縁層の側面を覆い、且つ、前記配線層と前記第5の開口において電気的に接続されることを特徴とする表示装置の作製方法。 - 半導体層を有するトランジスタ上に、前記半導体層に達する第1の開口を有する第1の絶縁層を形成し、
配線層、及び前記半導体層と前記第1の開口において電気的に接続されるソース電極層又はドレイン電極層を、前記第1の絶縁層上に形成し、
前記第1の絶縁層、前記ソース電極層又はドレイン電極層、及び前記配線層上に、第2の絶縁層を形成し、
前記第2の絶縁層に、前記ソース電極層又はドレイン電極層に達する第2の開口を形成するとともに、前記配線層に達する第3の開口を形成し、
前記ソース電極層又はドレイン電極層と前記第2の開口において電気的に接続される第1の電極層を、前記第2の絶縁層上に形成し、
前記第2の絶縁層、前記配線層、及び前記第1の電極層上に、前記第1の電極層に達する第4の開口及び前記配線層に達する第5の開口を有する第3の絶縁層を形成し、
前記第4の開口であって、前記第1の電極層上に、発光層及び第2の電極層を形成し、
前記第3の絶縁層は、前記第3の開口における前記第2の絶縁層の側面を覆い、
前記第2の電極層は、前記第5の開口における前記第3の絶縁層の側面を覆い、且つ、前記配線層と前記第5の開口において電気的に接続されることを特徴とする表示装置の作製方法。 - 半導体層、前記半導体層上のゲート絶縁層、及び前記ゲート絶縁層上のゲート電極層を有するトランジスタ上に、前記半導体層に達する第1の開口を有する第1の絶縁層を形成し、
配線層、及び前記半導体層と前記第1の開口において電気的に接続され且つ前記第1の絶縁層を介して前記ゲート電極層と重なるソース電極層又はドレイン電極層を、前記第1の絶縁層上に形成し、
前記第1の絶縁層、前記ソース電極層又はドレイン電極層、及び前記配線層上に、前記ソース電極層又はドレイン電極層に達し且つ前記ゲート電極層と重なる第2の開口及び前記配線層に達する第3の開口を有する第2の絶縁層を形成し、
前記ソース電極層又はドレイン電極層と前記第2の開口において電気的に接続される第1の電極層を、前記第2の絶縁層上に形成し、
前記第2の絶縁層、前記配線層、及び前記第1の電極層上に、前記第1の電極層に達する第4の開口及び前記配線層に達する第5の開口を有する第3の絶縁層を形成し、
前記第4の開口であって、前記第1の電極層上に、発光層及び第2の電極層を形成し、
前記第3の絶縁層は、前記第3の開口における前記第2の絶縁層の側面を覆い、
前記第2の電極層は、前記第5の開口における前記第3の絶縁層の側面を覆い、且つ、前記配線層と前記第5の開口において電気的に接続されることを特徴とする表示装置の作製方法。 - 請求項3において、
前記ゲート電極層は、テーパー形状を有することを特徴とする表示装置の作製方法。 - 請求項1乃至請求項4のいずれか一項において、
前記第2の開口は、前記第3の開口よりも面積が小さいことを特徴とする表示装置の作製方法。 - 請求項1乃至請求項5のいずれか一項において、
前記第1の絶縁層は、無機絶縁性材料又は有機絶縁性材料を用いて形成することを特徴とする表示装置の作製方法。 - 請求項1乃至請求項6のいずれか一項において、
前記第2の絶縁層は、無機絶縁性材料又は有機絶縁性材料を用いて形成することを特徴とする表示装置の作製方法。 - 請求項1乃至請求項7のいずれか一項において、
前記第1の絶縁層又は前記第2の絶縁層は、塗布法を用いて形成することを特徴とする表示装置の作製方法。
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