JP7300949B2 - 表示装置の補修方法 - Google Patents
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- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0852—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory with more than one capacitor
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- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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Description
図1は、本実施形態に係る表示装置の構成例を示す平面図である。図1に示すように、表示装置1は、アレイ基板2と、画素Pixと、駆動回路12と、駆動IC(Integrated Circuit)210と、カソード配線60と、を含む。アレイ基板2は、各画素Pixを駆動するための駆動回路基板であり、バックプレーン又はアクティブマトリクス基板とも呼ばれる。アレイ基板2は、基板10、複数のトランジスタ、複数の容量及び各種配線等を有する。
以上のように構成される表示装置1は、複数の無機発光体100の発光によって画像を表示する。無機発光体100を備える表示装置1は、例えば無機発光体100のサイズが小さいことによる搭載の困難性などが原因で、製造が難しく、不良を招く場合がある。不良とされた表示装置1を使用せず破棄処分にしたりすると、歩留りが低下してしまう。それに対し、本実施形態においては、不良とされた表示装置1を補修することで、不良となった表示装置1を使用可能な状態として、歩留りの低下を抑える。ここでの不良とは、表示装置1に搭載された少なくとも一部の無機発光体100が適切に発光しないことを指す。無機発光体100が適切に発光しない状態としては、例えば、滅点状態又は輝点状態が挙げられる。滅点状態とは、無機発光体100を発光させるための電流を流した場合にも、その無機発光体100が発光しない状態を指す。本実施形態では、無機発光体100を発光させるための電流を流した場合とは、発光動作期間に、アノード電源線L1から駆動トランジスタDRTを介して、無機発光体100に表示階調に応じた電流が供給された場合を指す。この場合、通常であれば、駆動トランジスタDRTから、ドレイン接続配線43d及び対向アノード電極50eを介して、無機発光体100のアノード電極112に、表示階調に応じた電流が供給され、無機発光体100はこの電流により発光する。しかし、滅点状態においては、アノード電源線L1から駆動トランジスタDRTを介して、無機発光体100に電流が供給される状態とした場合においても、無機発光体100が発光しない。一方、輝点状態とは、無機発光体100を発光させるための電流を流していない場合にも、その無機発光体100が発光する状態を指す。すなわち、無機発光体100を発光させるための電流を流していない場合、すなわちその無機発光体100に接続される駆動トランジスタDRTが本来オフとなっていなければならない場合においても、その無機発光体100が発光する状態が、輝点状態である。
50e 対向アノード電極
50f 接続層
52 接続導電部
72 絶縁体
90e 対向カソード電極
100 無機発光体
100A 不良無機発光体
100B 代替無機発光体
AR1 対象部分
AR 空間
LI 照射光
Claims (6)
- マトリクス状に並ぶ複数の無機発光体と、前記無機発光体の周囲に設けられる絶縁体とを備える表示装置の補修方法であって、
不良となっている前記無機発光体である不良無機発光体を検出する検出ステップと、
前記不良無機発光体の周囲の前記絶縁体に対して照射光を照射して、前記不良無機発光体を除去せずに残しつつ、前記不良無機発光体の周囲の前記絶縁体を除去する絶縁体除去ステップと、
周囲の前記絶縁体が除去された前記不良無機発光体を除去する無機発光体除去ステップと、を含む、
表示装置の補修方法。 - 前記絶縁体除去ステップにおいて、前記無機発光体が発光する光の進行方向側から見て、前記不良無機発光体の中央部の放射方向外側に位置して前記中央部を囲う対象部分に対して、前記照射光を照射することで、前記対象部分に含まれる前記絶縁体を除去する、請求項1に記載の表示装置の補修方法。
- 前記絶縁体除去ステップにおいて、前記表示装置の前記照射光を照射する照射位置を、前記不良無機発光体の中央部の周囲に沿って移動させることで、前記対象部分の全体に前記照射光を照射する、請求項2に記載の表示装置の補修方法。
- 前記照射光は、波長が216nm以上316nm以下のレーザ光である、請求項1から請求項3のいずれか1項に記載の表示装置の補修方法。
- 前記表示装置の前記不良無機発光体が除去された空間に、前記無機発光体を搭載する搭載ステップをさらに含む、請求項1から請求項4のいずれか1項に記載の表示装置の補修方法。
- 前記不良無機発光体は、前記無機発光体が発光する光の進行方向と反対側の端部が、電極に接続される接続導電部に固定されており、
前記無機発光体除去ステップにおいて、前記接続導電部から前記不良無機発光体を取り外すことで、前記接続導電部を残したまま前記不良無機発光体を除去して、
前記搭載ステップにおいて、前記接続導電部上に前記無機発光体を搭載し、前記接続導電部に向けて光を照射して前記接続導電部を溶融させた後、前記接続導電部を硬化させることで、前記無機発光体を前記接続導電部に固定する、請求項5に記載の表示装置の補修方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019173422A JP7300949B2 (ja) | 2019-09-24 | 2019-09-24 | 表示装置の補修方法 |
| CN202011005070.8A CN112635445B (zh) | 2019-09-24 | 2020-09-22 | 显示装置的修补方法 |
| TW109132883A TWI741805B (zh) | 2019-09-24 | 2020-09-23 | 顯示裝置之修補方法 |
| US17/029,695 US11538959B2 (en) | 2019-09-24 | 2020-09-23 | Display device comprising plurality of light emitting elements overlapping with contact electrodes |
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| JP2019173422A JP7300949B2 (ja) | 2019-09-24 | 2019-09-24 | 表示装置の補修方法 |
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| JP2021051167A JP2021051167A (ja) | 2021-04-01 |
| JP7300949B2 true JP7300949B2 (ja) | 2023-06-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102755663B1 (ko) * | 2020-08-27 | 2025-01-20 | 삼성디스플레이 주식회사 | 표시 장치 |
| JP7684851B2 (ja) * | 2021-06-29 | 2025-05-28 | 株式会社ジャパンディスプレイ | 表示装置 |
| CN114023780B (zh) * | 2021-09-24 | 2025-07-18 | 重庆康佳光电科技有限公司 | 显示装置的修复方法 |
| TWI798938B (zh) * | 2021-11-16 | 2023-04-11 | 友達光電股份有限公司 | 顯示裝置 |
| JP7514539B2 (ja) * | 2021-11-17 | 2024-07-11 | チャム エンジニアリング カンパニー リミテッド | マイクロledディスプレイリペア装置及び方法 |
| JP7406127B2 (ja) * | 2021-12-20 | 2023-12-27 | 日亜化学工業株式会社 | 発光装置の製造方法 |
| CN116364009A (zh) * | 2023-04-14 | 2023-06-30 | 京东方科技集团股份有限公司 | 一种消除亮点电路、显示基板 |
| TWI856711B (zh) * | 2023-06-21 | 2024-09-21 | 友達光電股份有限公司 | 顯示裝置 |
| KR20250099549A (ko) * | 2023-12-22 | 2025-07-02 | 삼성디스플레이 주식회사 | 표시 장치 및 그의 제조 방법 |
| JP2025132439A (ja) * | 2024-02-29 | 2025-09-10 | Tdk株式会社 | 素子アレイの製造方法、素子の除去方法、素子アレイのリペア方法、素子の除去装置、および素子アレイのリペア装置 |
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| US20210091260A1 (en) | 2021-03-25 |
| CN112635445A (zh) | 2021-04-09 |
| CN112635445B (zh) | 2024-04-12 |
| JP2021051167A (ja) | 2021-04-01 |
| TWI741805B (zh) | 2021-10-01 |
| US11538959B2 (en) | 2022-12-27 |
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