JP5818383B2 - 酸化膜が形成された導電性フィルムを備える有機発光ダイオードディスプレイ及びその製造方法 - Google Patents
酸化膜が形成された導電性フィルムを備える有機発光ダイオードディスプレイ及びその製造方法 Download PDFInfo
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Description
以下、添付図面を参照して本発明をより詳しく説明するが、本発明の範囲は、それに限定されるものではない。
ガラス基板上にITO層及びCu層を順次に形成し、多層構造のフィルムを製造した。その後、Cu層をパターン化した。パターンの幅は、1μm、パターン間の間隔は、100μmで形成した。パターン化されたCu層に対して120℃で10分間熱処理することで、表面に酸化膜(Cu2O)を形成した。製造されたフィルムの各層別厚さは、下記表1の通りである。
ガラス基板上にITO層及びCu層を順次に形成し、多層構造のフィルムを製造した。その後、Cu層をパターン化した。パターンの幅は、1μm、パターン間の間隔は、100μmで形成した。パターン化されたCu層に対して150℃で10分間熱処理することで、表面に酸化膜(Cu2O)を形成した。
ガラス基板上にITO層及びCu層を順次に形成して、多層構造のフィルムを製造し、150℃で10分間熱処理した。その後、Cu層をパターン化した。パターンの幅は、1μm、パターン間の間隔は、100μmで形成した。パターン化されたCu層に対して150℃で追加熱処理を実施した。
ガラス基板上にITO層及びCu層を順次に形成し、多層構造のフィルムを製造した。その後、Cu層をパターン化した。パターンの幅は、1μm、パターン間の間隔は、100μmで形成した。製造されたフィルムに対して別途の熱処理はしなかった。
酸化膜層に対する情報を分析するため、大気中に露出させて自然酸化膜が形成されたCu/ITO基板(比較例)と本発明による処理工程を経て酸化膜が形成されたCu2O/Cu/ITO基板(実施例1)に対して、GID(Grazing Incidence Diffraction)パターンを測定した。測定結果は、図5の通りである。
熱処理を経た酸化膜の厚さを算出するために、XRR(X−ray reflectometry)パターンを分析した。大気中に露出させて自然酸化膜が形成されたCu/ITO基板(比較例)と本発明による処理工程を経てCu酸化膜が形成されたCu2O/Cu/ITO基板(実施例2)に対して、XRRパターンを測定した。測定結果は、図6の通りである。
20:第1の導電層
30、31:第2の導電層
40、41:酸化膜
100、200:導電性フィルム
Claims (11)
- 基材と、
前記基材上に形成された透明電極である第1の導電層と、
前記第1の導電層上に形成されたパターン化された第2の導電層と、を含む導電性フィルムを備える有機発光ダイオードディスプレイであって、
前記第2の導電層のパターンの幅は、50nm〜2μm、そして前記パターンの間隔は、50μm〜5mmであり、前記第2の導電層の表面を熱処理またはプラズマ処理することで酸化させることで前記第2の導電層の上部面及び側面に酸化膜が形成され、
前記第2の導電層は、銅を含み、
前記第2の導電層に形成された酸化膜は、Cu 2 Oを含み、
前記第2の導電層に形成された酸化膜の厚さは、1nm〜100nmであることを特徴とする有機発光ダイオードディスプレイ。 - 前記基材は、ポリエステル系樹脂、アセテート系樹脂、ポリエーテルスルホン系樹脂、ポリカーボネート系樹脂、ポリアミド系樹脂、ポリイミド系樹脂、(メタ)アクリレート系樹脂、ポリ塩化ビニール系樹脂、ポリ塩化ビニリデン系樹脂、ポリスチレン系樹脂、ポリビニールアルコール系樹脂、ポリアクリレート及びポリフェニレンスルフィド系樹脂のいずれか1種以上の物質を含むことを特徴とする請求項1に記載の有機発光ダイオードディスプレイ。
- 前記第1の導電層は、ITOまたは元素Mがドーピングされた酸化亜鉛系薄膜(ZnO:M)からなり、前記元素Mは、13族元素または+3の酸化数を有する遷移金属であることを特徴とする請求項1または2に記載の有機発光ダイオードディスプレイ。
- 前記酸化膜が形成された前記第2の導電層上に形成された保護層をさらに含むことを特徴とする請求項1から3の何れか1項に記載の有機発光ダイオードディスプレイ。
- 前記保護層は、ITO、IZO及び金属の中で1種以上を含むことを特徴とする請求項4に記載の有機発光ダイオードディスプレイ。
- 前記第2の導電層の厚さは、1nm〜1mmであることを特徴とする請求項1から5の何れか1項に記載の有機発光ダイオードディスプレイ。
- 基材上に第1の導電層と第2の導電層を形成するステップと、
熱処理またはプラズマ処理を通じて上部面及び側面に酸化膜が形成されたパターン化された第2の導電層を形成するステップと、を含むことを特徴とする請求項1から請求項6の何れか1項に記載の有機発光ダイオードディスプレイの製造方法。 - 前記上部面及び側面に酸化膜が形成されたパターン化された第2の導電層を形成するステップは、
前記第2の導電層の表面に酸化膜を形成するステップと、
前記酸化膜が形成された前記第2の導電層をパターン化するステップと、
パターン化された前記第2の導電層の側面に酸化膜を形成するステップと、を含むことを特徴とする請求項7に記載の有機発光ダイオードディスプレイの製造方法。 - 前記上部面及び側面に酸化膜が形成されたパターン化された第2の導電層を形成するステップは、
前記第2の導電層をパターン化するステップと、
パターン化された前記第2の導電層の上部面及び側面に酸化膜を形成するステップと、を含むことを特徴とする請求項7に記載の有機発光ダイオードディスプレイの製造方法。 - 前記基材上に第1の導電層と第2の導電層を形成するステップは、熱蒸着、真空蒸着、スパッタリング、電子ビーム蒸着またはイオンビーム蒸着を利用して実行することを特徴とする請求項7から9の何れか1項に記載の有機発光ダイオードディスプレイの製造方法。
- 前記熱処理の温度は、130℃〜200℃の範囲であることを特徴とする請求項7から請求項10の何れか1項に記載の有機発光ダイオードディスプレイの製造方法。
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