JP6714401B2 - 表示装置 - Google Patents
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- JP6714401B2 JP6714401B2 JP2016055276A JP2016055276A JP6714401B2 JP 6714401 B2 JP6714401 B2 JP 6714401B2 JP 2016055276 A JP2016055276 A JP 2016055276A JP 2016055276 A JP2016055276 A JP 2016055276A JP 6714401 B2 JP6714401 B2 JP 6714401B2
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Description
本実施形態では、本発明の一実施形態に係る表示装置100を図1乃至図3を用いて説明する。
表示装置100の上面図を図1に示す。表示装置100は、第1の領域104と、第1の領域104から基板の外側に向かう方向において第1の領域104と隣接する第2の領域(106、図2参照)を基板102の一方の面(上面)に有している。第2の領域106は第1の領域104に隣接し、第1の領域104を取り囲む。
図1に示す鎖線A−Bに沿った断面模式図を図2に示す。図2は、電源線164に最も近い画素110の一部、およびその周辺の断面構造を示す模式図である。表示装置100は基板102上に第1の領域104と第2の領域106を有し、さらに表示領域108と第2の領域106の間に駆動回路領域114を有している。基板102上にはアンダーコート130が設けられる。
上述したように、第2の層182は隔壁172を覆い、表示領域108内の発光素子126と隔壁172に重なる領域で平坦な上面を有している。このように第2の層182を厚く形成することで、水や酸素などの不純物の侵入を効果的に防止することができる。例えば図3(A)に、表示装置100の作製中、異物190が発光素子126の第1の電極170上に残留した場合の模式図を示す。この場合、パッシベーション膜178の第1の層180は異物190によって分断されるが、その後形成される第2の層182は異物190を完全に覆い、平坦な上面を与えることができる。このため第2の層182上に形成される第3の層184は均一な厚さを有し、第2の層182を十分に被覆することができ。その結果、表示装置100の上面からの不純物の侵入を効果的に防止することができる。
本実施形態では、第1実施形態で述べた表示装置100の作製方法を図4乃至図8を用いて説明する。第1実施形態で述べた内容と同様の記述は省略することがある。図4乃至図8は、図1の鎖線A−Bに沿った表示装置100の断面模式図である。
本実施形態では、第1実施形態と異なる表示装置200、300、400に関し、図9乃至11を用いて説明する。図9、10は、図1の鎖線A−Bに沿った表示装置100の断面模式図であり、図11は表示装置400の上面模式図である。第1、第2実施形態と同様の構成については記述を省略することがある。
Claims (16)
- トランジスタ、前記トランジスタ上の平坦化膜、および前記平坦化膜上に位置し、前記トランジスタと電気的に接続される発光素子を有する第1の領域、および前記第1の領域に隣接する第2の領域を含む基板と、
前記第2の領域内の金属膜と、
前記発光素子と前記金属膜上に位置し、無機化合物を含む第1の層、前記第1の層上に位置し、有機化合物を含む第2の層、および前記第2の層上に位置し、無機化合物を有する第3の層を含む封止膜を有し、
前記第2の領域は前記第1の領域から前記基板の外側に向かう方向に位置し、
前記金属膜は第1族金属元素、第2族元素のうち少なくとも一つを有し、
前記金属膜は、前記第2の層と平面視で重畳するとともに、前記平坦化膜とは平面視で重畳しないように配置される表示装置。 - トランジスタ、前記トランジスタ上の平坦化膜、および前記平坦化膜上に位置し、前記トランジスタと電気的に接続される発光素子を有する第1の領域、および前記第1の領域に隣接する第2の領域を含む基板と、
前記発光素子と前記第2の領域上に位置し、無機化合物を含む第1の層と、
前記第2の領域内で前記第1の層上に位置する金属膜と、
前記第1の層と前記金属膜上に位置し、有機化合物を含む第2の層と、
前記第2の層の上に位置し、無機化合物を含む第3の層を有し、
前記第2の領域は前記第1の領域から前記基板の外側に向かう方向に位置し、
前記金属膜は第1族金属元素、第2族元素のうち一つを有し、
前記金属膜は、前記第2の層と平面視で重畳するとともに、前記平坦化膜とは平面視で重畳しないように配置される表示装置。 - 前記金属膜は、前記第1の領域を取り囲む輪郭を形成するように複数配置され、
前記平坦化膜は前記複数の金属膜が形成する輪郭内に収まるように配置される、請求項1または2に記載の表示装置。 - 前記複数の金属膜から選ばれる第1の金属膜と第2の金属膜が、前記第1の領域を挟んで前記基板の長辺または短辺に平行な第1の方向に伸び、
前記複数の金属膜から選ばれる第3の金属膜と第4の金属膜が、前記第1の領域を挟んで前記第1の方向と異なる第2の方向に伸びる、請求項3に記載の表示装置。 - 前記第2の方向は前記第1の方向に垂直である、請求項4に記載の表示装置。
- 前記第2の領域が前記第1の領域を取り囲む、請求項1または2に記載の表示装置。
- 前記第1の領域に駆動回路をさらに含む、請求項1または2に記載の表示装置。
- 前記第1の層が前記金属膜と接する、請求項1または2に記載の表示装置。
- 前記トランジスタのゲート電極と前記平坦化膜の間に第1の絶縁膜をさらに有し、
前記金属膜が前記第1の絶縁膜と接する、請求項1に記載の表示装置。 - 前記平坦化膜と前記発光素子の間に第2の絶縁膜をさらに有し、
前記金属膜が前記第2の絶縁膜と接する、請求項1に記載の表示装置。 - 前記発光素子は、
第1の電極と、
前記第1の電極上のEL層と、
前記EL層上の第2の電極を有し、
前記第2の電極と前記金属膜が同一の層に存在し、同一材料からなる、請求項1に記載の表示装置。 - 前記第1の電極の端部を覆う隔壁をさらに有し、
前記発光素子および前記隔壁と重なる領域において前記第2の層の上面が平坦である、請求項11に記載の表示装置。 - 前記第2の層の上面が、前記第1の領域から前記第2の領域にかけて傾斜している、請求項1または2に記載の表示装置。
- 前記金属膜は第2族元素を含む、請求項1または2に記載の表示装置。
- 前記金属膜はマグネシウム、カルシウム、またはバリウムを含む、請求項1または2に記載の表示装置。
- 前記第2の領域において、前記第1の層と前記第3の層が接する、請求項13に記載の表示装置。
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JP6827332B2 (ja) * | 2017-02-01 | 2021-02-10 | 株式会社ジャパンディスプレイ | 表示装置 |
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