Disclosed is an electronic device including a glass member having a flat portion and a side portion extending from an edge of the flat portion in at least a partially slanted or curved manner. The side portion includes a first curved portion extending from the flat portion, a second curved portion extending from the first curved portion and connected to the flat portion through the first curved portion, and at least one processing portion formed by at least a part of a border region between the first curved portion and the second curved portion. The at least one processing portion has a different refractive index from at least another portion of the side portion.

The plastic intermediate film includes a sound insulating layer, wherein the sound insulating layer comprises a polyvinyl acetal resin, a plasticizer, and a refractive index regulator, wherein the refractive index regulator is particles with average diameter (D.sub.50) of 100 nm or less and has an absolute refractive index of 2.0 or more, wherein the refractive index regulator is comprised in an amount of more than 0 wt % and 1 wt % or less based on the entire sound insulating layer, and wherein the plasticizer is comprised in an amount of 33 to 41 wt % based on the entire sound insulating layer.

An example display device includes a display element having at least one portion which can be changed into a curved shape; and a flexible window member stacked onto the display element, wherein the thickness of a portion of the window member is less than that of the other portions.

The present disclosure provides a display screen and a display device. The display screen includes a display panel, a cover plate, and a shielding layer disposed between the two. The display screen further includes a bonding layer disposed between the shielding layer and the display panel. The bonding layer includes a glue layer including a first side close to the display panel and a second side away from the display panel; and a light guiding portion including a light incident side configured to input ultraviolet light and a light-emitting side configured to output the ultraviolet light to the first side or the second side.

A system having a concealed communications element like a telecommunication antenna is described. More specifically, The system has a communications element that is concealed by a highly reflective multilayer polymer optical film 200. The first element of the multilayer polymer optical film is a core layer 202 that is made up of a multilayer optical stack. The multilayer optical stack of core layer 202 includes two alternating polymeric layers. The multilayer polymer optical film may optionally also include a protective layer 204 (for example, a hardcoat or an over laminate) that is positioned between the viewer and the core layer. The protective layer 204 may include one or more UV absorbers to aid in durability of the multilayer polymer optical film against UV-degradation. Multilayer polymer optical film 200 may optionally also include an adhesive layer 208 that is positioned between the core layer 202 and a surface onto which the multilayer polymer optical film is to be adhered.

A Head up display system includes a projection light source, laminated glass, and a transparent nano film. The transparent nano film includes at least one laminated structure consisting of a high refractive-index layer and a low refractive-index layer, where the high refractive-index layer and the low refractive-index layer is deposited sequentially outwards from the surface of the inner glass pane. The projection light source is configured to generate P-polarized light. A ratio of near-red light reflectivity R1 at wavelengths ranging from 580 nm to 680 nm of the laminated glass with the transparent nano film to near-blue light reflectivity R2 at wavelengths ranging from 420 nm to 470 nm of the laminated glass with the transparent nano film is R1/R2=1.0˜2.0.

The present invention provides a transparent electroconductive layer-equipped cover element having a pressure-sensitive adhesive sheet preliminarily laminated thereto, wherein the pressure-sensitive adhesive sheet comprises a pressure-sensitive adhesive layer in which a refractive index adjustment zone having a refractive index greater than that of a base pressure-sensitive adhesive material thereof is formed over a given range from a surface of the pressure-sensitive adhesive layer in a thickness direction thereof, whereby: in a lamination process of a customer which is a supply destination of the transparent electroconductive layer-equipped cover element, it becomes possible to eliminate a need to distinguish between obverse and reverse sides of the pressure-sensitive adhesive sheet itself; and, when the transparent electroconductive layer-equipped cover element is bonded to an optical element through the pressure-sensitive adhesive layer, it becomes possible to suppress internal reflection in a laminate formed of these optical elements.

A macro fiber for a composite article may include a plurality of inner fibers. Each one of the inner fibers may have an inner fiber final cross-sectional size of less than approximately 100 nanometers. The inner fibers may be surrounded by matrix material.

There is provided an anti-reflection film that has an excellent reflection characteristic (low reflectivity) in a wide spectrum and has an excellent reflection hue that is close to neutral, and a method by which such anti-reflection film can be produced with high productivity and at a low cost. An anti-reflection film according to the present invention includes: a substrate; and a medium-refractive index layer, a high-refractive index layer, and a low-refractive index layer in the stated order from a substrate side. A refractive index n.sub.S of the substrate, a refractive index n.sub.M of the medium-refractive index layer, and a refractive index n.sub.H of the high-refractive index layer satisfy the following expression (1): $\begin{array}{c}\frac{n_H-1}{n_H+1}-\sqrt{1-\frac{4n_M^2{n}_S}{{n_M^2\left(1+n_S\right)}^2-(1-}}\end{array}$

To provide a vinylidene-fluoride resin film having low cloudiness and good visibility of a pattern and the like of a decorative film of a lower layer although having a matte tone with low glossiness. The vinylidene-fluoride resin film comprises crosslinked acrylic acid ester resin particles, in which the crosslinked acrylic acid ester resin particles have an average particle diameter of 5% or more and 40% or less to the thickness of the vinylidene-fluoride resin film and the arithmetic average surface roughness (Ra) of the vinylidene-fluoride resin film is 0.4 μm or more and less than 2 μm.