LAMINATE FILM AND PRODUCTION METHOD OF THE SAME, TOUCH PANEL DEVICE, IMAGE DISPLAY DEVICE AND MOBILE APPARATUS

PROBLEM TO BE SOLVED: To provide a laminate film for a touch panel device, which is excellent in resistance to blocking and resistance to Newton rings and can give a sharp image, a production method of the laminate film, a touch panel device, an image display device and a mobile apparatus.SOLUTION: A laminate film 10 to be used for a touch panel device includes a substrate 11, a refractive index adjusting layer 12, a transparent conductive layer 13, and a fine uneven structure layer 14. The fine uneven structure layer 14 has a fine uneven structure on the surface thereof, the fine uneven structure having an average interval between protrusions 14a or recesses 14b of 400 nm or less. The refractive index adjusting layer 12 has a laminate structure including each at least one layer of, successively from the substrate 11 side, a high refractive index layer 12a having a refractive index higher than that of the substrate 11 and a low refractive index layer 12b having a refractive index lower than that of the high refractive index layer 12a. In the laminate film 10, absolute values of aand bvalues represented by the Labcolor system, determined by the following equation (1): E={(L)+(a)+(b)}, are 2.5 or less, respectively.SELECTED DRAWING: Figure 1 【課題】耐ブロッキング性および耐ニュートンリング性に優れ、鮮明な画像を得ることができるタッチパネル装置用の積層フィルムとその製造方法、タッチパネル装置、画像表示装置、およびモバイル機器の提供。【解決手段】タッチパネル装置に用いられる積層フィルム１０であって、基材１１と屈折率調整層１２と透明導電層１３と微細凹凸構造層１４とを備え、微細凹凸構造層１４は表面に凸部１４ａ間または凹部１４ｂ間の平均間隔が４００ｎｍ以下の微細凹凸構造を有し、屈折率調整層１２は基材１１側から順に、基材１１より屈折率が高い高屈折率層１２ａと、高屈折率層１２ａより屈折率が低い低屈折率層１２ｂとをそれぞれ１層以上備えた積層構造であり、下記式（１）より求められる、Ｌ＊ａ＊ｂ＊表色系で示されるａ＊およびｂ＊の値の絶対値が、それぞれ２．５以下である積層フィルム１０。Ｅ＊＝｛（Ｌ＊）２＋（ａ＊）２＋（ｂ＊）２｝１／２・・・（１）【選択図】図１