JP6361659B2 - 絶縁パターンの形成方法 - Google Patents
絶縁パターンの形成方法 Download PDFInfo
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- JP6361659B2 JP6361659B2 JP2015525302A JP2015525302A JP6361659B2 JP 6361659 B2 JP6361659 B2 JP 6361659B2 JP 2015525302 A JP2015525302 A JP 2015525302A JP 2015525302 A JP2015525302 A JP 2015525302A JP 6361659 B2 JP6361659 B2 JP 6361659B2
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- Prior art keywords
- insulating layer
- ink
- insulating
- viscosity
- layer forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims description 45
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- PESYEWKSBIWTAK-UHFFFAOYSA-N cyclopenta-1,3-diene;titanium(2+) Chemical compound [Ti+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 PESYEWKSBIWTAK-UHFFFAOYSA-N 0.000 description 1
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Description
次いで、形成された前記絶縁層の上に、更に導電材料をパターニングする絶縁パターンの形成方法。
前記絶縁層形成インクの出射時に該絶縁層形成インクをゾル−ゲル相転移温度以上に加熱してゾル化しておき、前記絶縁層形成インクをゾル−ゲル相転移温度以下の基材に着弾させてゲル化することによって、(基材に着弾後の粘度)/(出射時の粘度)≧100の条件を満たすように前記絶縁層形成インクを前記基材に付与し、
次いで、着弾後の前記絶縁層形成インクに活性エネルギー線を照射して硬化させて前記絶縁層を形成する前記2〜5の何れかに記載の絶縁パターンの形成方法。
(基材に着弾後の粘度)/(出射時の粘度)≧100
<基板の作製>
ガラス基板(透明基板)1の片面上にスパッタリング法にて、ITOを成膜し、このITO層上にポジ型レジストを塗布し、プリベーク、超高圧水銀灯光源を用いたマスク露光、現像を行った後、エッチング液にてITO層をエッチングし、苛性カリ水溶液にてレジストを剥離し、図1及び図2(a)に示すような複数の第1透明電極21と、複数の電極膜(第2透明電極前駆体)20とからなるパターンを形成した。
表1に示す組成及び量により、各素材を混合し、その後、ADVATEC社製「テフロン」(登録商標)で作成された3μmメンブランフィルターを用い、濾過を行って、絶縁層形成インク1、2、3を作製した。濾過による組成の変化が実質的に生じていないことを確認した。
温度制御可能なストレス制御型レオメータ(PhysicaMCR300、AntonPaar社製)に本発明のインクをセットして100℃に加熱し、降温速度0.1℃/sの条件で、25℃まで冷却し、粘度測定を行った。測定は直径75.033mm、コーン角1.017°のコーンプレート(CP75−1、Anton Paar社製)を用いて行った。
ピエゾ型インクジェットノズルを備えたインクジェット記録ヘッドを有するインクジェット記録装置に、上記調製した各インク組成物を装填し、インク1、2はヘッド、インク供給系などをすべて100℃に設定し、インク3はヘッド温度を50℃に設定して、図2(b)の符号3の領域に、湿潤膜厚が3μmになるようにインク液量と解像度を調整して、各インクを塗布した。基材は25℃に調整してステージ上に置いた。
形成された絶縁層を顕微鏡観察し、下記の評価基準でパターニング性を評価した。
[評価基準]
○:絶縁層の形成領域が、所望の形成領域(図2(b)の符号3の領域)に一致する。
×:絶縁層の形成領域が、所望の形成領域(図2(b)の符号3の領域)に一致しない。
形成されたブリッジ配線を顕微鏡観察し、断線しているかどうかを観察した。また、ブリッジ配線の長辺(図2(c)中の上下方向)にわたって電気が流れるかテスターにて確認した。ブリッジ配線適性を以下の基準で評価した。
[評価基準]
○:断線しておらず、電気が流れる。
×:断線しており、電気が流れない。
本発明に係る粘度変化条件を満たすインク1、2を用いた試験1、2(何れも本発明)では、図2(b)の符号3の領域にきれいに絶縁層をパターニングできたが、本発明に係る粘度変化条件を満たさないインク3を用いた試験3(比較例)では、ガラスとITOでインクの濡れ性が異なるために、ガラス面にインクが流れてしまい、狙い通りのパターニングができなかった。
2:電極パターン
20:電極膜(第2透明電極前駆体)
21:第1透明電極
211:島状電極部
212:接続電極部
22:第2透明電極
23:交差部
3:絶縁層
4:ブリッジ配線
Claims (8)
- インクジェット法により、凹凸のある部材に跨って形成される絶縁層をパターニングする際に、(基材に着弾後の粘度)/(出射時の粘度)≧100の条件を満たすように絶縁層形成インクを基材に付与し、
次いで、形成された前記絶縁層の上に、更に導電材料をパターニングする絶縁パターンの形成方法。 - 前記絶縁層形成インクは、ホットメルト、チクソトロピー又はゲル化の何れかの相変化機構を有する請求項1記載の絶縁パターンの形成方法。
- 前記絶縁層形成インクは、活性エネルギー線硬化性組成物と、オイルゲル化剤とを含む請求項2記載の絶縁パターンの形成方法。
- 前記オイルゲル化剤として、硬化性オイルゲル化剤を少なくとも1種以上含む請求項3記載の絶縁パターンの形成方法。
- 前記活性エネルギー線硬化性組成物としてアクリル系モノマーを含む請求項3又は4記載の絶縁パターンの形成方法。
- 前記絶縁層形成インクの出射時に該絶縁層形成インクをゾル−ゲル相転移温度以上に加熱してゾル化しておき、前記絶縁層形成インクをゾル−ゲル相転移温度以下の基材に着弾させてゲル化することによって、(基材に着弾後の粘度)/(出射時の粘度)≧100の条件を満たすように前記絶縁層形成インクを前記基材に付与し、
次いで、着弾後の前記絶縁層形成インクに活性エネルギー線を照射して硬化させて前記絶縁層を形成する請求項2〜5の何れかに記載の絶縁パターンの形成方法。 - 前記絶縁層は、異なる部材に跨って形成される請求項1〜6の何れかに記載の絶縁パターンの形成方法。
- 前記絶縁層は、タッチパネルのブリッジ配線の下地を構成する請求項1〜7の何れかに記載の絶縁パターンの形成方法。
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