TRANSPARENT FILM BASE MATERIAL FOR TOUCH SENSOR PANEL AND TOUCH SENSOR PANEL USING THE SAME

To provide a transparent film base material for a touch sensor panel excellent in visibility at bending and processing characteristics.SOLUTION: A transparent film base material for a touch sensor panel includes a polyimide polymer and an inorganic component, and has a yellowness of 5 or less, a thi...

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Hauptverfasser:	LEU CHYI-MING, SAKURAI TAKASHI, GONG YU RUI, HUANG LI TING, HAYASHI SHINA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CALCULATING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS SEMICONDUCTOR DEVICES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a transparent film base material for a touch sensor panel excellent in visibility at bending and processing characteristics.SOLUTION: A transparent film base material for a touch sensor panel includes a polyimide polymer and an inorganic component, and has a yellowness of 5 or less, a thickness direction retardation Rof 50 nm or less, and an absolute value of a photoelastic coefficient of 40×10Paor less. The polyimide polymer includes a structure expressed by a formula (1): [In the formula (1), Grepresents a tetravalent aliphatic group, and Aindependently represents a divalent organic group having at least one aromatic group].SELECTED DRAWING: Figure 1 【課題】屈曲時の視認性及びプロセス特性に優れるタッチセンサーパネル用透明フィルム基材を提供すること。【解決手段】ポリイミド系高分子と無機成分とを含有し、黄色度が５以下であり、厚さ方向位相差Ｒｔｈが５０ｎｍ以下であり、光弾性係数の絶対値が４０×１０−１２Ｐａ−１以下であり、上記ポリイミド系高分子が、式（１）で表される構造を含む、タッチセンサーパネル用透明フィルム基材。［式（１）中、Ｇ１は、４価の脂肪族基を示し、Ａ１は各々独立に、少なくとも１つの芳香族基を有する２価の有機基を示す。］【選択図】図１