JP5690948B2 - タッチパネル用粘着剤組成物、粘着フィルム及びタッチパネル - Google Patents
タッチパネル用粘着剤組成物、粘着フィルム及びタッチパネル Download PDFInfo
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- JP5690948B2 JP5690948B2 JP2013538668A JP2013538668A JP5690948B2 JP 5690948 B2 JP5690948 B2 JP 5690948B2 JP 2013538668 A JP2013538668 A JP 2013538668A JP 2013538668 A JP2013538668 A JP 2013538668A JP 5690948 B2 JP5690948 B2 JP 5690948B2
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- film
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- sensitive adhesive
- meth
- touch panel
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- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
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- 150000003505 terpenes Chemical class 0.000 description 1
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- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
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Description
X=20kg/in2
X=20kg/in2
以下、本発明に係る実施例及び本発明に係らない比較例により本発明をより詳しく説明するが、本発明の範囲は下記に提示した実施例によって制限されるものではない。
窒素ガスが還流され、温度調節が容易になるように冷却装置を設けた1L反応器に、エチルヘキシルアクリレート(EHA)55重量部;イソボルニルアクリレート(IBOA)20重量部;及び2−ヒドロキシエチルアクリレート(HEA)25重量部を投入して部分重合させることにより、粘度が3500cpsのシロップを得た。前記の部分重合されたアクリル系樹脂(A)の重量平均分子量は120万だった。
製造例1と同様の方法で部分重合されたアクリル系樹脂(B)を製造した。前記の部分重合されたアクリル系樹脂(B)の重量平均分子量は30万だった。
製造例1と同様の方法で部分重合されたアクリル系樹脂(C)を製造した。前記の部分重合されたアクリル系樹脂(C)の重量平均分子量は100万だった。
製造例1と同様の方法で部分重合されたアクリル系樹脂(D)を製造した。前記の部分重合されたアクリル系樹脂(D)の重量平均分子量は70万だった。
製造例1で製造された部分重合されたアクリル系樹脂(A)100重量部に対して、多官能性架橋剤であるヘキサンジオールジアクリレート0.2重量部、カップリング剤(KBM403、Shin-Etsu(製))0.2重量部、ウレタンアクリレート1.5重量部及び光開始剤(Irgacure651、Ciba Specialty Chemicals(製))0.3重量部を配合して粘着剤組成物を製造し、これにより粘度が1,500〜2,500cpsのコーティング液を製造した。次いで、製造されたコーティング液を離型処理されたポリエチレンテレフタレートフィルム(厚さ:75μm)に、UV硬化後の厚さが100μmになるようにバーコーターを用いてコーティングした。その後、UVランプを用いて紫外線を10分間照射して硬化させることにより粘着フィルムを製造した。
実施例及び比較例で製造された粘着フィルムを1in×1in×72μm(横×縦×厚さ)の大きさに裁断し、離型フィルムを剥離した後、前記粘着フィルムの一方の面をITO面が形成されたポリエチレンテレフタレート(PET)フィルムのITO面に付着し、前記粘着フィルムのその反対面をSUS面に付着させた。このとき、粘着フィルムの付着は、ASTM D1002に基づいて5kgのローラーを5回往復させて行った。その後、100℃の温度で1時間維持し、UTM(Universal Testing Machine,Zwick)を用いて5mm/minのクロスヘッド速度で高温せん断強度を測定した。
実施例及び比較例で製造された粘着フィルムを1in×1in×72μm(横×縦×厚さ)の大きさに裁断し、離型フィルムを剥離した後、パターン化されたITO(NittoDenco社(製))に付着し、60℃及び90%RHの恒温恒湿室で48時間保管しながらITOのパターンが見えるかを観察し、下記の基準でパターン見え特性を評価した。
×:前記条件でITOのパターンが見えるが、4時間以内に消えた
△:前記条件でITOのパターンが見えるが、10時間経過後に消えた
○:前記条件でITOのパターンが見えると共に、24時間維持された
11 基材フィルム
12 粘着剤層
21a、21b 離型フィルム
30、40 タッチパネル
31 電導性プラスチックフィルム
31a プラスチック基材
31b 導電層
41 反射防止コーティング
42 保護フィルム
43 透明基板
44 液晶表示装置(LCD)
Claims (16)
- 重量平均分子量が100万以上である、部分重合されたアクリル系樹脂;
ヘキサンジオールジ(メタ)アクリレート、トリメチロールプロパントリオキシエチルジ(メタ)アクリレート、アルキレングリコールジ(メタ)アクリレート、ジアルキレングリコールジ(メタ)アクリレート、トリアルキレングリコールジ(メタ)アクリレート、ジシクロペンテニルジ(メタ)アクリレート、ジシクロペンテニルオキシエチルジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、ジペンタエリトリトールヘキサジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレート及びペンタエリトリトールトリ(メタ)アクリレートからなる群から選ばれる一つ以上である、多官能(メタ)アクリレートからなる多官能性架橋剤;
及びウレタンアクリレートを含み、
下記式1の条件を満たす、一方の面に導電層が形成されている電導性プラスチックフィルムの導電層に付着される粘着剤層に用いられるタッチパネル用粘着剤組成物:
<式1>
X≧20kg/in 2
前記式1で、Xは前記粘着剤組成物の硬化物である粘着剤の一方の面を第1基材に付着し、前記粘着剤の反対面を第2基材に付着した後、100℃の温度で1時間放置し、5mm/minのクロスヘッド速度で測定した高温せん断強度を示す。 - 部分重合されたアクリル系樹脂が、重合度が5%〜60%である、請求項1に記載のタッチパネル用粘着剤組成物。
- アクリル系樹脂が、(メタ)アクリル酸エステル系単量体及び架橋性単量体を含む単量体混合物の重合体である、請求項1に記載のタッチパネル用粘着剤組成物。
- (メタ)アクリル酸エステル系単量体が、アルキル(メタ)アクリレートである、請求項3に記載のタッチパネル用粘着剤組成物。
- 架橋性単量体が、ヒドロキシル基含有単量体、カルボキシル基含有単量体又は窒素含有単量体である、請求項3に記載のタッチパネル用粘着剤組成物。
- 多官能性架橋剤が、部分重合されたアクリル系樹脂100重量部に対して、0.01重量部〜10重量部で含まれる、請求項1に記載のタッチパネル用粘着剤組成物。
- ウレタンアクリレートが、部分重合されたアクリル系樹脂100重量部に対して、0.1重量部〜10重量部で含まれる、請求項1に記載のタッチパネル用粘着剤組成物。
- 光開始剤をさらに含む、請求項1に記載のタッチパネル用粘着剤組成物。
- 光開始剤が、ベンゾイン系開始剤、ヒドロキシケトン系開始剤又はアミノケトン系開始剤である、請求項8に記載のタッチパネル用粘着剤組成物。
- 基材フィルム;及び前記基材フィルムの一方の面又は両面に形成され、請求項1〜9のいずれか一項に記載の粘着剤組成物の硬化物を含む粘着剤層を含む、タッチパネル用粘着フィルム。
- 粘着剤層が、厚さが50μm〜300μmである、請求項10に記載のタッチパネル用粘着フィルム。
- 基材フィルムが、ポリエチレンテレフタレートフィルム、ポリテトラフルオロエチレンフィルム、ポリエチレンフィルム、ポリプロピレンフィルム、ポリブテンフィルム、ポリブタジエンフィルム、塩化ビニル共重合体フィルム、ポリウレタンフィルム、エチレン−ビニルアセテートフィルム、エチレン−プロピレン共重合体フィルム、エチレン−アクリル酸エチル共重合体フィルム、エチレン−アクリル酸メチル共重合体フィルム及びポリイミドフィルムからなる群から選ばれた一つ以上である、請求項10に記載のタッチパネル用粘着フィルム。
- 基材フィルムが、厚さが25μm〜300μmである、請求項10に記載のタッチパネル用粘着フィルム。
- 粘着剤層上に離型フィルムをさらに含む、請求項10に記載のタッチパネル用粘着フィルム。
- 一方の面に導電層が形成されている電導性プラスチックフィルム;及び前記電導性プラスチックフィルムの導電層に付着されており、請求項1〜9のいずれか一項に記載の粘着剤組成物の硬化物を含む粘着剤層を含む、タッチパネル。
- 電導性プラスチックフィルムが、一方の面にITO層が形成されているポリエチレンテレフタレートフィルムである、請求項15に記載のタッチパネル。
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- 2011-11-23 TW TW100143004A patent/TWI447192B/zh active
- 2011-11-24 KR KR1020110123877A patent/KR101289170B1/ko active IP Right Grant
- 2011-11-24 JP JP2013538668A patent/JP5690948B2/ja active Active
- 2011-11-24 EP EP11842758.2A patent/EP2644675B1/en active Active
- 2011-11-24 CN CN201180056873.9A patent/CN103237860B/zh active Active
- 2011-11-24 WO PCT/KR2011/009023 patent/WO2012070887A2/ko active Application Filing
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KR20120056230A (ko) | 2012-06-01 |
JP2014502293A (ja) | 2014-01-30 |
TW201221605A (en) | 2012-06-01 |
TWI447192B (zh) | 2014-08-01 |
EP2644675A2 (en) | 2013-10-02 |
US20130236672A1 (en) | 2013-09-12 |
WO2012070887A2 (ko) | 2012-05-31 |
EP2644675A4 (en) | 2014-07-02 |
EP2644675B1 (en) | 2015-10-21 |
KR101289170B1 (ko) | 2013-07-26 |
CN103237860A (zh) | 2013-08-07 |
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WO2012070887A3 (ko) | 2012-09-13 |
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