JP6736379B2 - 表示装置 - Google Patents
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- JP6736379B2 JP6736379B2 JP2016125585A JP2016125585A JP6736379B2 JP 6736379 B2 JP6736379 B2 JP 6736379B2 JP 2016125585 A JP2016125585 A JP 2016125585A JP 2016125585 A JP2016125585 A JP 2016125585A JP 6736379 B2 JP6736379 B2 JP 6736379B2
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- 239000012790 adhesive layer Substances 0.000 description 5
- 238000005401 electroluminescence Methods 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 229920001721 polyimide Polymers 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
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- 239000004925 Acrylic resin Substances 0.000 description 2
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- 239000004642 Polyimide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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- H01L27/02—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
- 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
- H01L27/1218—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 or structure of the substrate
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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
- H01L27/124—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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- H—ELECTRICITY
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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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
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- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/4985—Flexible insulating substrates
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
- H05K1/0281—Reinforcement details thereof
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10128—Display
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/311—Flexible OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Electroluminescent Light Sources (AREA)
- Structure Of Printed Boards (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
また、他の実施形態に係る表示装置は、前記保護層のヤング率が前記端部領域と前記中央領域とで異なる。
なお、開示はあくまで一例に過ぎず、当業者において、発明の主旨を保っての適宜変更について容易に想到し得るものについては、当然に本発明の範囲に含有される。また、図面は、説明をより明確にするため、実際の態様に比べて模式的に表される場合があるが、あくまで一例であって、本発明の解釈を限定するものではない。各図において、連続して配置される同一又は類似の要素については符号を省略することがある。また、本明細書と各図において、既出の図に関して前述したものと同一又は類似した機能を発揮する構成要素には同一の参照符号を付し、重複する詳細な説明を省略することがある。
図1は、表示装置1の概略的な平面図である。表示装置1は、表示パネル2を備えている。表示パネル2は、表示領域DAと、表示領域DAを囲う周辺領域SAとを有している。表示領域DAには、画素PXがマトリクス状に配列されている。本実施形態において、画素PXは、有機EL素子やスイッチング素子(薄膜トランジスタ)を含む。例えば、有機EL素子は、上記スイッチング素子に接続された画素電極と、複数の画素PXに亘る共通電極と上記画素電極の間の電圧に応じて発光する有機発光層と、を備える。
[第1実施形態]
第1実施形態においては、中央領域CAと各端部領域EA1、EA2とで保護層20の厚さを異ならせている。以下、図3に示した構成への適用例を挙げるが、本実施形態と同様の構造は図4或いは図5に示した構成等にも適用できる。
ここで、図6乃至図9に示した構造に適用可能な実施例1について説明する。図10は、実施例1における層構成を示す図である。図示したように、実施例1では、配線層30が一対のパッシベーション層で挟まれている。パッシベーション層は、例えばSiN或いはSiO等の無機膜であり、配線層30を酸化や腐食などから保護する。これらパッシベーション層は、それぞれどの層に含まれていても良い。
以上の構造であれば、中央領域CAにおいて、配線層30のアルミニウム層と中立面が一致する。また、各端部領域EA1、EA2においては、中立面がアルミニウム層よりも補強膜22側に移動する。なお、配線領域LAの長さLは50mmであり、各補強膜22(各端部領域EA1、EA2)の幅W2は15mmである。
また、各端部領域EA1、EA2において、保護層20の厚さが多段階に変化していても良い。このような構造は、例えば幅が異なる複数の補強膜22を積層することで実現できる。
第2実施形態においては、中央領域CAと各端部領域EA1、EA2とでフレキシブル基板11の厚さを異ならせている。以下、図3或いは図5に示した構成への適用例を挙げるが、本実施形態と同様の構造は図4に示した構成等にも適用できる。
ここで、図12及び図13に示した構造に適用可能な実施例2について説明する。図14は、実施例2における層構成を示す図である。補強膜22を備えないこと、及び、フレキシブル基板11の厚さを除き、層構成、膜厚、及びヤング率は実施例1と同じである。配線領域LAの長さLも、実施例1と同じく50mmである。
第3実施形態においては、中央領域CAと各端部領域EA1、EA2とでフレキシブル基板11及び保護層20の双方の厚さを異ならせる。以下、図3或いは図5に示した構成への適用例を挙げるが、本実施形態と同様の構造は図4に示した構成等にも適用できる。
第4実施形態においては、フレキシブル基板11及び保護層20の厚さを調整するのではなく、中央領域CAと各端部領域EA1、EA2とで保護層20のヤング率を異ならせる。以下、図3或いは図5に示した構成への適用例を挙げるが、本実施形態と同様の構造は図4に示した構成等にも適用できる。
第5実施形態に係る配線領域LAは、第1実施形態において図6乃至図9を用いて説明した構成と同様である。但し、本実施形態では、保護膜21よりもヤング率が大きい材料で補強膜22を形成する。保護膜21及び補強膜22の材料は、第4実施形態同様、膜厚やヤング率を考慮して適宜に選定することができる。
なお、第3実施形態で図15に示した構成において、補強膜22のヤング率を保護膜21のヤング率より大きくしても良い。
また、各実施形態では、1つの配線層30が配線領域LAに形成される場合を想定したが、複数の配線層30が配線領域LAの厚み方向において位置をずらして形成されても良い。この場合、折り曲げの外側に位置する配線層30に加わる引張応力が大きくなり得る。そこで、各実施形態にて開示した手法により中立面を制御する対象を、折り曲げの外側に位置する配線層30に設定しても良い。
本発明の思想の範疇において、当業者であれば、各種の変形例に想到し得るものであり、それら変形例についても本発明の範囲に属するものと解される。例えば、上述の各実施形態に対して、当業者が適宜、構成要素の追加、削除、若しくは設計変更を行ったもの、又は、工程の追加、省略若しくは条件変更を行ったものも、本発明の要旨を備えている限り、本発明の範囲に含まれる。
また、各実施形態において述べた態様によりもたらされる他の作用効果について、本明細書の記載から明らかなもの、又は当業者において適宜想到し得るものについては、当然に本発明によりもたらされるものと解される。
Claims (7)
- 画素が配列された表示領域を含む第1領域と、前記第1領域と第1方向に隣接する第2領域と、複数の配線と、を有する第1基板と、
前記第1基板の前記第2領域に実装された外部回路と、を備える表示装置であって、
前記複数の配線は、前記外部回路と電気的に接続し、
前記複数の配線は、前記第1方向と交差する配列方向に間隔をあけて配置され、前記第2領域において保護層によって覆われ、
前記第2領域は、前記配列方向において、端部領域と中央領域とを有し、
前記第1基板及び前記保護層の少なくとも一方の厚さは、前記端部領域と前記中央領域とで異なり、
前記第1基板は、前記第2領域において、前記配列方向と平行な軸に沿って曲げられている、
表示装置。 - 前記中央領域における前記保護層の第1厚さよりも、前記端部領域における前記保護層の第2厚さの方が大きい、
請求項1に記載の表示装置。 - 前記中央領域における前記第1基板の第3厚さよりも、前記端部領域における前記第1基板の第4厚さの方が小さい、
請求項1に記載の表示装置。 - 画素が配列された表示領域を含む第1領域と、前記第1領域と第1方向に隣接する第2領域と、複数の配線と、を有する第1基板と、
前記第1基板の前記第2領域に実装された外部回路と、を有する表示装置であって、
前記複数の配線は、前記外部回路と電気的に接続し、
前記複数の配線は、前記第1方向と交差する配列方向に間隔をあけて配置され、前記第2領域において保護層によって覆われ、
前記第2領域は、前記配列方向において、端部領域と中央領域とを有し、
前記端部領域に形成された前記保護層と前記中央領域に形成された前記保護層は、それぞれヤング率が異なり、
前記第1基板は、前記第2領域において、前記配列方向と平行な軸に沿って曲げられている、
表示装置。 - 前記中央領域における前記保護層の第1ヤング率よりも、前記端部領域における前記保護層の第2ヤング率の方が大きい、
請求項4に記載の表示装置。 - 前記保護層は、前記中央領域において第1厚さを有し、前記端部領域において第2厚さを有し、
前記第1ヤング率×前記第1厚さ≦前記第2ヤング率×前記第2厚さ、かつ、
前記第2ヤング率×前記第2厚さ≦1.5×前記第1ヤング率×前記第1厚さ、
を満たす、
請求項5に記載の表示装置。 - 前記第2領域は、前記複数の配線からなる配線群の前記配列方向における幅が前記第1領域から離れるに連れて小さくなる集約領域を有し、
前記端部領域及び前記中央領域は、前記集約領域と重なっている、
請求項1乃至6のうちいずれか1項に記載の表示装置。
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CN105977400B (zh) * | 2016-07-21 | 2018-01-26 | 京东方科技集团股份有限公司 | 一种显示面板及其制备方法、显示装置 |
JP6983537B2 (ja) | 2017-05-16 | 2021-12-17 | 株式会社ジャパンディスプレイ | フレキシブル基板 |
KR102316563B1 (ko) * | 2017-05-22 | 2021-10-25 | 엘지디스플레이 주식회사 | 금속으로 형성된 상부 기판을 포함하는 유기 발광 표시 장치 및 이의 제조 방법 |
JP2019003026A (ja) * | 2017-06-15 | 2019-01-10 | 株式会社ジャパンディスプレイ | 表示装置 |
US20190252637A1 (en) * | 2018-02-13 | 2019-08-15 | Innolux Corporation | Foldable display device |
KR102524340B1 (ko) * | 2018-02-22 | 2023-04-25 | 삼성디스플레이 주식회사 | 플렉서블 표시 장치 및 이의 제조 방법 |
CN108470853A (zh) | 2018-04-12 | 2018-08-31 | 京东方科技集团股份有限公司 | 一种柔性显示面板及其制备方法和显示装置 |
CN108922407B (zh) * | 2018-09-11 | 2023-11-24 | 合肥京东方光电科技有限公司 | 显示屏及显示装置 |
KR102633441B1 (ko) * | 2018-12-03 | 2024-02-06 | 삼성디스플레이 주식회사 | 표시 유닛, 이를 포함하는 전자 장치, 및 전자 장치의 제조 방법 |
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JP2020160305A (ja) * | 2019-03-27 | 2020-10-01 | 株式会社ジャパンディスプレイ | フレキシブルパネル装置 |
JP7341728B2 (ja) | 2019-05-28 | 2023-09-11 | 株式会社ジャパンディスプレイ | フレキシブル基板 |
US11733731B2 (en) * | 2020-08-03 | 2023-08-22 | Cambrios Film Solutions Corporation | Conductive laminated structure and foldable electronic device |
CN112863358B (zh) * | 2021-01-26 | 2022-07-12 | 武汉华星光电半导体显示技术有限公司 | 显示装置 |
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US9601557B2 (en) * | 2012-11-16 | 2017-03-21 | Apple Inc. | Flexible display |
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