LIGHT-TRANSMITTING CONDUCTIVE FILM

• Main Authors: NAKATANI YASUHIRO, HAYASHI HIDEKI
• Format: Patent
• Language: English; Japanese
• Published: 20.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CALCULATING; COMPUTING; CONDUCTORS; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TRANSPORTING

PROBLEM TO BE SOLVED: To suppress pattern visibility in a light-transmitting conductive film.SOLUTION: The light-transmitting conductive film comprises (A) a light-transmitting support layer, (B) a support film with a hard coat including a hard coat layer, (C) an optical interference layer, and (D) a light-transmitting conductive layer having an electrode pattern, and has the following properties. (i) The light-transmitting support layer (A) shows a refractive index of 1.6 to 1.7; (ii) the hard coat layer (B) shows a refractive index of 1.48 to 1.52; (iii) the support film with a hard coat exhibits a 5-degree regular reflection spectrum satisfying predetermined requirements, obtained by the measurement on a surface on the hard coat layer (B) side, while blocking light on the opposite side surface; and (iv) the light-transmitting conductive layer (D) exhibits a 5-degree regular reflection spectrum in a wavelength region from 535 nm to 555 nm satisfying predetermined requirements, obtained by the measurement on a surface on the light-transmitting conductive layer (D) side, while blocking light on the opposite side surface. 【課題】光透過性導電性フィルムにおいて、骨見え現象を抑制する。【解決手段】（Ａ）光透過性支持層及び（Ｂ）ハードコート層を含有する、ハードコート付き支持フィルム、並びに（Ｃ）光学干渉層及び（Ｄ）電極用パターン形状を有する光透過性導電層を含有し、（ｉ）光透過性支持層（Ａ）が、屈折率１．６〜１．７を示し、（ｉｉ）ハードコート層（Ｂ）が、屈折率１．４８〜１．５２を示し、（ｉｉｉ）ハードコート付き支持フィルムが、反対側の面を遮光しつつハードコート層（Ｂ）側の面から測定して得られる５度正反射スペクトルが、所定の要件を満たし、かつ（ｉｖ）光透過性導電層（Ｄ）が、反対側の面を遮光して光透過性導電層（Ｄ）側の面から測定して得られる波長域５３５ｎｍ〜５５５ｎｍにおける５度正反射スペクトルについて、所定の要件を満たす光透過性導電性フィルム。【選択図】なし