JP6668160B2 - 表示装置の製造方法 - Google Patents
表示装置の製造方法 Download PDFInfo
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- JP6668160B2 JP6668160B2 JP2016093071A JP2016093071A JP6668160B2 JP 6668160 B2 JP6668160 B2 JP 6668160B2 JP 2016093071 A JP2016093071 A JP 2016093071A JP 2016093071 A JP2016093071 A JP 2016093071A JP 6668160 B2 JP6668160 B2 JP 6668160B2
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
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- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
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- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/10—Materials and properties semiconductor
- G02F2202/104—Materials and properties semiconductor poly-Si
Description
Claims (10)
- 酸化物半導体を半導体層に用いた第1のTFTとポリシリコンを半導体層に用いた第2のTFTおよび第3のTFTを有する表示装置の製造方法であって、
基板上に非晶質シリコンを形成した後ポリシリコンに変換し、
その後前記ポリシリコンをフォトリソグラフィにより複数の前記第2のTFTおよび第3のTFTの半導体層と前記第1のTFTのソース電極座及びドレイン電極座に同時に形成し、
さらに前記第2のTFTの半導体層全体と前記第3のTFTの半導体層のチャネル部に第1のレジストを形成し、第1のイオンインプランテーションを行い前記第1のレジストに覆われない部分にリンをドーピングし、
その後前記第1のレジストを剥離し、前記第1のTFTが配置される部分に酸化物半導体層を形成し、
さらにゲート絶縁膜を全面に形成した後、前記第1、第2及び第3のTFTにそれぞれ第1のゲート電極、第2のゲート電極及び第3のゲート電極を形成し、
その後前記第1のゲート電極、第2のゲート電極及び第3のゲート電極をマスクとして第2のイオンインプランテーションを行ってリンをドーピングし、
さらに前記第1のTFTと前記第3のTFTを第2のレジストで覆い、前記第2のTFTの半導体層に前記第2のゲート電極及び前記第2のレジストをマスクとして第3のイオンインプランテーションを行ってボロンをドーピングし、
その後前記第2のレジストを剥離し、層間絶縁膜を形成した後該層間絶縁膜にスルーホールを開口し、ソース電極とドレイン電極を形成したことを特徴とする表示装置の製造方法。 - 前記基板上に前記非晶質シリコンを形成するに先立って下地膜を形成することを特徴とする請求項1に記載の表示装置の製造方法。
- 前記酸化物半導体は、IGZO、ITZO、ZnON、IZO、IGO、ZnOのいずれかであることを特徴とする請求項1に記載の表示装置の製造方法。
- 前記酸化物半導体は、10nmないし100nmの範囲の膜厚で形成されることを特徴とする請求項1に記載の表示装置の製造方法。
- 前記スルーホールを開口した後、前記ドレイン電極およびソース電極を形成
する前に、前記ポリシリコンの表面酸化膜を除去するためにフッ酸洗浄を行うことを特徴とする請求項1に記載の表示装置の製造方法。 - 前記表示装置は液晶表示装置であることを特徴とする請求項1に記載の表示装置の製造方法。
- 前記表示装置は有機EL表示装置であることを特徴とする請求項1に記載の表示装置の製造方法。
- 酸化物半導体を半導体層に用いた第1のTFTとポリシリコンを半導体層に用いた第2のTFTおよび第3のTFTを有する表示装置の製造方法であって、
基板上に非晶質シリコンを形成した後ポリシリコンに変換し、
その後前記ポリシリコンをフォトリソグラフィにより複数の前記第2のTFTおよび第3のTFTの半導体層と前記第1のTFTのソース電極座及びドレイン電極座に同時に形成し、
さらに前記第2のTFTの半導体層全体と前記第3のTFTの半導体層のチャネル部に第1のレジストを形成し、第1のイオンインプランテーションを行い前記第1のレジストに覆われない部分にリンをドーピングし、
その後前記第1のレジストを剥離し、前記第1のTFTが配置される部分に酸化物半導体層を形成し、
さらにゲート絶縁膜を全面に形成した後、前記第1、第2及び第3のTFTにそれぞれ第1のゲート電極、第2のゲート電極及び第3のゲート電極を形成し、
その後前記第1のゲート電極、第2のゲート電極及び第3のゲート電極をマスクとして第2のイオンインプランテーションを行ってリンをドーピングし、
さらに前記第1のTFTの前記酸化物半導体層及び前記ソース電極座と前記ドレイン電極座のいずれか一方を含む部分と前記第3のTFTを第2のレジストで覆い、前記第2のTFTの半導体層および前記ソース電極座と前記ドレイン電極座のいずれか他方に、前記ゲート電極及び前記第2のレジストをマスクとして第3のイオンインプランテーションを行ってボロンをドーピングし、
その後前記第2のレジストを剥離し、層間絶縁膜を形成した後該層間絶縁膜にスルーホールを開口し、ソース電極とドレイン電極を形成したことを特徴とする表示装置の製造方法。 - 前記表示装置の製造方法は液晶表示装置であることを特徴とする請求項8に記載の表示装置の製造方法。
- 前記表示装置の製造方法は有機EL表示装置であることを特徴とする請求項8に記載の表示装置の製造方法。
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US9214508B2 (en) * | 2014-02-24 | 2015-12-15 | Lg Display Co., Ltd. | Thin film transistor substrate with intermediate insulating layer and display using the same |
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