JP7314380B2 - 表示装置 - Google Patents
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- JP7314380B2 JP7314380B2 JP2022142914A JP2022142914A JP7314380B2 JP 7314380 B2 JP7314380 B2 JP 7314380B2 JP 2022142914 A JP2022142914 A JP 2022142914A JP 2022142914 A JP2022142914 A JP 2022142914A JP 7314380 B2 JP7314380 B2 JP 7314380B2
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Images
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- 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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- 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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- H01L27/1214—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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1251—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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs comprising TFTs having a different architecture, e.g. top- and bottom gate TFTs
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- H01L27/1214—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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
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- H10K50/80—Constructional details
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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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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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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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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- H10K59/10—OLED displays
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- 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
- H10K59/10—OLED displays
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- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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- H10K59/124—Insulating layers formed between TFT elements and OLED elements
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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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 (23)
- 表示装置であって、
アクティブ領域及びベンディング領域を有する可撓性基板と、
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ドレイン電極を有する第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ドレイン電極を有する第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の第1平坦化層及び第2平坦下層と、
上部ストレージ電極及び下部ストレージ電極を有する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ゲート電極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
を備え、
前記第1半導体層が多結晶半導体層からなり、前記第2半導体層が酸化物半導体層からなり、
前記第1ソース電極が、前記少なくとも二つの第1絶縁膜及び前記少なくとも一つの第2絶縁膜を貫通する第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ドレイン電極が、前記少なくとも二つの第1絶縁膜及び前記少なくとも一つの第2絶縁膜を貫通する第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ソース電極が、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ドレイン電極が、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が、前記遮光層と同一平面上に配置され、且つ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が、前記第1ゲート電極と同一平面上に配置され、且つ前記第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絶縁膜が、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が、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が、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が、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。 - 前記遮光層が、前記少なくとも二つの第1絶縁膜の間に配置される、請求項1に記載の表示装置。
- 前記遮光層及び前記上部ストレージ電極が、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下部層間絶縁膜が、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ドレイン電極が、同一平面上に配置され、且つ同一素材で形成される、請求項1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薄膜トランジスタと、前記第1平坦化層の間に配置される保護膜をさらに備え、
前記保護膜が、無機絶縁素材から形成される、請求項1に記載の表示装置。 - 表示装置であって、
アクティブ領域及びベンディング領域を有する可撓性基板と、
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ドレイン電極を有する第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ドレイン電極を有する第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、前記ベンディング領域まで延在する第1平坦化層と、
前記第1平坦化層上に配置された画素連結電極であって、前記第1薄膜トランジスタと前記第2薄膜トランジスタの一方に接続された、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ドレイン電極の間の、無機絶縁素材から形成された複数の絶縁層と、
前記ベンディング領域に配置された信号リンクであって、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た、信号リンクと
を備え、
前記信号リンクが、前記第1平坦化層上に配置され、且つ前記画素連結電極と同一素材で形成されている、表示装置。 - 前記ベンディング領域に配置された少なくとも一つの開口部をさらに含み、前記少なくとも一つの開口部が、
前記第2ソース電極及び前記第2ドレイン電極と接触するための前記第2半導体層までの第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ソース電極及び前記第2ドレイン電極と接触するための前記第1半導体層までの第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11に記載の表示装置。 - 前記複数の絶縁層が、
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開口部が、前記ベンディング領域で前記上部層間絶縁膜を貫通して形成され、
前記基板が前記ベンディング領域で前記少なくとも一つの開口部によって露出されるように、前記第2開口部が、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る、請求項12に記載の表示装置。 - 前記第1コンタクトホールが、前記第1半導体層を露出するように、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、
前記第2コンタクトホールが、前記第2半導体層を露出するように、前記上部下部層間絶縁膜を貫通して形成される、請求項13に記載の表示装置。 - 前記第1ソース電極及び第1ドレイン電極と前記第2ソース電極及び第2ドレイン電極が、前記上部層間絶縁膜上に配置される、請求項13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12に記載の表示装置。 - 前記画素連結電極を介して前記第2薄膜トランジスタと接続されるアノードと、前記低電位供給ラインと接続されるカソード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形成される、請求項16に記載の表示装置。 - 前記低電位供給ラインが、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が、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16に記載の表示装置。 - 前記第2低電位供給ラインが、前記画素連結電極と同一平面上に配置され、且つ前記画素連結電極と同一素材で形成され、
前記第2高電位供給ラインが、前記第2ソース電極及び第2ドレイン電極と同一平面上に配置され、且つ前記第2ソース電極及び第2ドレイン電極と同一素材で形成される、請求項18に記載の表示装置。 - 前記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た前記第2薄膜トランジスタからなる;
前記駆動トランジスタと接続されたスイッチングトランジスタとして構成された前記第1薄膜トランジスタとを含む、請求項16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
をさらに含む、請求項20に記載の表示装置。 - 前記画素連結電極及び前記信号リンクを覆うように配置された第2平坦化層をさらに備える、請求項11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薄膜トランジスタと、前記第1平坦化層の間に配置される保護膜をさらに備え、
前記保護膜が、無機絶縁素材から形成される、請求項11に記載の表示装置。
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US20240260317A1 (en) | 2024-08-01 |
GB2570796B (en) | 2020-08-26 |
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