JPWO2019106716A1 - 有機el発光素子及びその製造方法 - Google Patents
有機el発光素子及びその製造方法 Download PDFInfo
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/191—Deposition of organic active material characterised by provisions for the orientation or alignment of the layer to be deposited
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- Microelectronics & Electronic Packaging (AREA)
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
(1)本発明の第一の実施形態に係る有機EL発光素子は、基板と、前記基板の表面の上に設けられた第1電極と、前記第1電極の少なくとも一部を取り囲むべく形成された絶縁バンクと、前記絶縁バンクによって取り囲まれた第1電極の上に形成された有機層と、前記有機層の上に形成された第2電極とを備え、前記絶縁バンクが、順テーパ形状または前記絶縁バンクの側壁が前記第1電極に対して略垂直である形状であり、かつ、前記絶縁バンクの表面が親水性に形成されており、前記有機層が、有機材料のオリゴマーを含む塗布型の有機層である。
22 第1電極
23 絶縁バンク
23a 開口
25 塗膜
25a 塗布液
26 有機層
27 第2電極
28 保護膜
31 ノズル
Claims (8)
- 基板と、
前記基板の表面の上に設けられた第1電極と、
前記第1電極の少なくとも一部を取り囲むべく形成された絶縁バンクと、
前記絶縁バンクによって取り囲まれた第1電極の上に形成された有機層と、
前記有機層の上に形成された第2電極と
を備え、
前記絶縁バンクが、順テーパ形状または前記絶縁バンクの側壁が前記第1電極に対して略垂直である形状であり、かつ、前記絶縁バンクの表面が親水性に形成されており、
前記有機層が、有機材料のオリゴマーを含む塗布型の有機層である、有機EL発光素子。 - 前記絶縁バンクの側壁の、前記第1電極に対する角度が、10°以上、90°以下である、請求項1に記載の有機EL発光素子。
- 前記絶縁バンクの表面が、5〜30nmの算術平均粗さを有する改質表面である、請求項1または2に記載の有機EL発光素子。
- 前記絶縁バンクの表面の水との接触角が、15°以上、60°以下である、請求項1〜3のいずれか1項に記載の有機EL発光素子。
- 前記有機層と前記絶縁バンクの側壁との接点である、有機層のピニング位置が、前記有機層の最薄部の高さよりも高い位置にある、請求項1〜4のいずれか1項に記載の有機EL発光素子。
- 基板の表面の上に、第1電極を形成する工程と、
前記第1電極の少なくとも一部を取り囲むように、絶縁バンクを形成する工程と、
前記絶縁バンクで取り囲まれた領域の前記第1電極の上に、塗布型の有機層を形成する工程と、
前記有機層の上に、第2電極を形成する工程と、
を含み、
前記有機層を形成する前に、前記絶縁バンクの開口内表面に親水性を増す改質処理を行うことを含み、
前記有機層の形成を、有機材料のオリゴマーを含む液状組成物をインクジェット法によって滴下することによって行う、有機EL発光素子の製造方法。 - 前記改質処理を、前記絶縁バンクの表面の再硬化または可溶溶媒への暴露によって前記絶縁バンクの表面の算術平均粗さを改質することで行う、請求項6に記載の製造方法。
- 前記改質処理を、プラズマ照射、UV照射及びオゾン処理のいずれかによって、前記絶縁バンクの表面に極性官能基を導入して行う、請求項6に記載の製造方法。
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US8995022B1 (en) * | 2013-12-12 | 2015-03-31 | Kateeva, Inc. | Ink-based layer fabrication using halftoning to control thickness |
US11005082B2 (en) * | 2017-11-28 | 2021-05-11 | Sakai Display Products Corporation | Organic EL light-emitting element and manufacturing method thereof |
JP6470477B1 (ja) * | 2017-11-28 | 2019-02-13 | 堺ディスプレイプロダクト株式会社 | 有機el発光素子及びその製造方法 |
KR20200096367A (ko) * | 2019-02-01 | 2020-08-12 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
CN110165090B (zh) * | 2019-05-10 | 2021-06-01 | 深圳市华星光电半导体显示技术有限公司 | 有机发光显示器件及其制作方法 |
KR20210154304A (ko) * | 2020-06-11 | 2021-12-21 | 삼성디스플레이 주식회사 | 유기 물질을 포함하는 잉크, 이를 이용한 표시 장치 및 표시 장치의 제조방법 |
CN111785685B (zh) * | 2020-07-16 | 2022-05-17 | 云谷(固安)科技有限公司 | 显示面板的制造方法、显示面板及显示装置 |
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US20210351352A1 (en) | 2021-11-11 |
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