Laminate, transparent conductive laminate, and touch panel

Abstract

The invention discloses a laminate, a transparent conductive laminate, and a touch panel. The present invention provides a laminate with excellent smoothness and transparency and which has excellent conductive layer visibility-limiting effects in both the front direction and oblique directions. The present invention relates to a laminate, which has a laminate film in which a second layer and a first layer, in said order from the supporting substrate side, are laminated on at least one side of a supporting substrate, wherein the refractive indices of the first layer and the second layer differ and all of (A) - (D) below are satisfied. (A) (n2) > (n1) Expression (1) (B) (Ra1) <= 5 nm Expression (2) (C) Hz <= 0.6% Expression (3) (D) ([theta]r1) - ([theta]i1) > 1.0 DEG Expression (4) (n1): refractive index of first layer, (n2): refractive index of second layer, (Ra1): arithmetic average roughness of first layer-air layer interface, Hz: laminate haze, ([theta]i1): theoretical Brewster angle of the first layer-air layer interface, ([theta]r1): measured Brewster angle of the first layer-air layer interface.

Description

technical field [0001] The present invention relates to touch panels used in various electronic devices, transparent conductive laminates used for transparent electrodes of touch panels, and laminates for adjusting the refractive index of transparent conductive laminates. Background technique [0002] In recent years, capacitive touch panels have been increasingly mounted on various mobile devices such as mobile phones and portable music terminals. Such a capacitive touch panel has a configuration in which a dielectric layer is laminated on a patterned conductor, and when touched with a finger or the like, it is grounded via the electrostatic capacity of the human body. At this time, the resistance value between the patterned electrode and the ground point changes, and the position input is recognized. However, when a conventional transparent conductive film is used, there is a large difference in optical characteristics between the part with the conductive layer and the pa...

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Problems solved by technology

[0008] On the other hand, the transmittance, color tone, and protrusion suppression of the pattern of the conductive layer (that is, making the pattern of the conductive layer difficult to see and suppressing the visibility of the pattern of the conductive layer) of the above-mentioned transparent conductive film using optical interference The method is generally known to use the optical path design in the normal direction of the transparent conductive film, but when peeking from an oblique direction, it may not be possible to obtain a sufficient suppressing effect of the pattern recognition of the conductive layer

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