JP7140874B2 - 表示装置 - Google Patents
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- JP7140874B2 JP7140874B2 JP2021073985A JP2021073985A JP7140874B2 JP 7140874 B2 JP7140874 B2 JP 7140874B2 JP 2021073985 A JP2021073985 A JP 2021073985A JP 2021073985 A JP2021073985 A JP 2021073985A JP 7140874 B2 JP7140874 B2 JP 7140874B2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H10K50/80—Constructional details
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H10K59/124—Insulating layers formed between TFT elements and OLED elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- H10K59/131—Interconnections, e.g. wiring lines or terminals
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Description
104 酸化物半導体層
106、156 ソース電極
108、158 ドレイン電極
130 発光素子
154 多結晶半導体層
162 低電位供給ライン
172 高電位供給ライン
176、LK 信号リンク
180 ストレージキャパシタ
192、194 開口部
Claims (21)
- アクティブ領域を含む基板と、
前記アクティブ領域に配置され、第1半導体層、第1ゲート電極、第1ソース電極及び第1ドレイン電極を含む第1薄膜トランジスタと、
前記アクティブ領域に配置され、第2半導体層、第2ゲート電極、第2ソース電極及び第2ドレイン電極を含む第2薄膜トランジスタと、
前記第1薄膜トランジスタ及び前記第2薄膜トランジスタ上に配置される無機絶縁素材の保護膜と、
上部ストレージ電極及び下部ストレージ電極を含むストレージキャパシタと、
前記第1ゲート電極と前記第2半導体層との間の、少なくとも二つの第1絶縁膜と、
前記第2半導体層と重畳する遮光層と、
前記第2ゲート電極上の、少なくとも一つの第2絶縁膜とを含み、
前記第1半導体層は多結晶半導体層から形成され、前記第2半導体層は酸化物半導体層から形成され、
前記第1ソース電極は、前記少なくとも二つの第1絶縁膜と前記少なくとも一つの第2絶縁膜とを貫通する第1ソースコンタクトホールを介して前記第1半導体層と接触し、
前記第1ドレイン電極は、前記少なくとも二つの第1絶縁膜と前記少なくとも一つの第2絶縁膜とを貫通する第1ドレインコンタクトホールを介して前記第1半導体層と接触し、
前記第2ソース電極は、前記少なくとも一つの第2絶縁膜を貫通する第2ソースコンタクトホールを介して前記第2半導体層と接触し、
前記第2ドレイン電極は、前記少なくとも一つの第2絶縁膜を貫通する第2ドレインコンタクトホールを介して前記第2半導体層と接触し、
前記ストレージキャパシタの前記上部ストレージ電極は前記遮光層と同一層上に配置され、前記遮光層と同一素材で形成される、表示装置。 - 前記下部ストレージ電極は前記第1ゲート電極と同一平面上に配置され、前記第1ゲート電極と同一素材で形成される、請求項1に記載の表示装置。
- 前記少なくとも二つの第1絶縁膜は第1下部層間絶縁膜、第2下部層間絶縁膜及び上部バッファー層を含む、請求項1に記載の表示装置。
- 前記上部バッファー層は酸化シリコン(SiOx)から形成され、前記下部層間絶縁膜は窒化シリコン(SiNx)から形成される、請求項3に記載の表示装置。
- 前記下部ストレージ電極は前記第1薄膜トランジスタの第1下部ゲート絶縁膜上に配置され、
前記上部ストレージ電極は前記第1下部層間絶縁膜を挟んで前記下部ストレージ電極と重畳する、請求項3に記載の表示装置。 - 前記遮光層は前記少なくとも二つの第1絶縁膜の間に位置する、請求項1に記載の表示装置。
- 前記遮光層と前記上部ストレージ電極は前記第1下部層間絶縁膜上に配置される、請求項3に記載の表示装置。
- 前記上部バッファー層及び前記第2下部層間絶縁膜は前記遮光層と前記第2半導体層の間に配置される、請求項3に記載の表示装置。
- 前記第1ソース電極、前記第1ドレイン電極、前記第2ソース電極及び前記第2ドレイン電極は、同一平面上に配置され、同一素材で形成される、請求項1に記載の表示装置。
- アクティブ領域及びベンディング領域を含む基板と、
前記アクティブ領域に配置され、第1半導体層、第1ゲート電極、第1ソース電極及び第1ドレイン電極を含む第1薄膜トランジスタと、
前記アクティブ領域に配置され、第2半導体層、第2ゲート電極、第2ソース電極及び第2ドレイン電極を含む第2薄膜トランジスタと、
前記第1薄膜トランジスタ及び前記第2薄膜トランジスタ上に配置される、無機絶縁素材から形成される保護膜と、
前記保護膜上に配置される第1平坦化層と、
前記第1平坦化層上に配置され、前記第2薄膜トランジスタと接続する画素連結電極と、
前記基板と前記第1ソース電極及び前記第1ドレイン電極との間の、無機絶縁素材から形成される複数の絶縁層と、
前記アクティブ領域に配置される信号ラインと接続され、前記ベンディング領域に配置される信号リンクとを含み、
前記信号リンクは前記第1平坦化層上に配置され、前記画素連結電極と同一素材から形成される、表示装置。 - 前記ベンディング領域に配置される少なくとも一つの開口部を含み、
前記少なくとも一つの開口部は、
前記第2ソース電極または前記第2ドレイン電極を前記第2半導体層に接触させる第2コンタクトホールと同一の深さを有する第1開口部と、
前記第1ソース電極または前記第1ドレイン電極を前記第1半導体層に接触させる第1コンタクトホールより深い深さを有する第2開口部とを含む、請求項10に記載の表示装置。 - 前記複数の絶縁層は、
前記基板上に順次配置されるマルチバッファー層及び下部バッファー層と、
前記第1半導体層と前記第2半導体層の間に順次積層される、前記第1薄膜トランジスタの第1ゲート絶縁膜、第1下部層間絶縁膜、第2下部層間絶縁膜及び上部バッファー層と、
前記第2半導体層と前記第2ソース電極及び前記第2ドレイン電極との間に配置される上部層間絶縁膜とを含み、
前記第1開口部は、前記ベンディング領域の前記上部層間絶縁膜を貫通して形成され、
前記第2開口部は、前記ベンディング領域の前記マルチバッファー層、前記下部バッファー層、前記第1ゲート絶縁膜、前記第1下部層間絶縁膜、前記第2下部層間絶縁膜及び前記上部バッファー層を貫通して形成され、
前記ベンディング領域において、前記基板は前記少なくとも一つの開口部によって露出される、請求項11に記載の表示装置。 - 前記第1コンタクトホールは、前記第1ゲート絶縁膜、前記第1下部層間絶縁膜、前記第2下部層間絶縁膜、前記上部バッファー層及び前記上部層間絶縁膜を貫通して形成されて、前記第1半導体層を露出させ、
前記第2コンタクトホールは、前記上部層間絶縁膜を貫通して形成されて、前記第2半導体層を露出させる、請求項12に記載の表示装置。 - 前記第1ソース電極、前記第1ドレイン電極、前記第2ソース電極及び前記第2ドレイン電極は、前記上部層間絶縁膜上に配置される、請求項12に記載の表示装置。
- 前記第1薄膜トランジスタ及び前記第2薄膜トランジスタのいずれか一つと接続される高電位供給ラインと、
前記保護膜を挟んで前記高電位供給ラインと重畳する低電位供給ラインとをさらに含む、請求項11に記載の表示装置。 - 前記画素連結電極を通して前記第2薄膜トランジスタと接続されるアノード電極と前記低電位供給ラインと接続されるカソード電極とを含む有機発光素子をさらに含み、
前記低電位供給ライン及び前記高電位供給ラインの少なくとも一つはメッシュ状に配置される、請求項15に記載の表示装置。 - 前記低電位供給ラインは、
互いに交差する第1低電位供給ライン及び第2低電位供給ラインを含み、
前記高電位供給ラインは、
前記第1低電位供給ラインに平行な第1高電位供給ラインと、
前記保護膜及び前記第1平坦化層を挟んで前記第2低電位供給ラインと重畳する第2高電位供給ラインとを含む、請求項15に記載の表示装置。 - 前記第2低電位供給ラインは前記画素連結電極と同一平面上に配置され、前記画素連結電極と同一素材で形成され、
前記第2高電位供給ラインは前記第2ソース電極及び前記第2ドレイン電極と同一平面上に配置され、前記第2ソース電極及び前記第2ドレイン電極と同一素材で形成される、請求項17に記載の表示装置。 - 有機発光素子を駆動する画素駆動回路をさらに含み、
前記画素駆動回路は、
駆動トランジスタとして構成される前記第2薄膜トランジスタと、
前記駆動トランジスタと接続されるスイッチングトランジスタとして構成される前記第1薄膜トランジスタとを含む、請求項15に記載の表示装置。 - 前記画素駆動回路は、
前記スイッチングトランジスタと接続された第2スイッチングトランジスタと、
前記駆動トランジスタと接続された第3スイッチングトランジスタとさらに含む、請求項19に記載の表示装置。 - 前記画素連結電極と前記信号リンクを覆うように配置される第2平坦化層をさらに含む、請求項10に記載の表示装置。
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KR102637791B1 (ko) * | 2018-02-13 | 2024-02-19 | 삼성디스플레이 주식회사 | 디스플레이 장치 |
CN111490068B (zh) * | 2019-01-29 | 2022-07-26 | 京东方科技集团股份有限公司 | 显示面板及其制造方法、显示装置 |
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