Disclosed is a polyimide having a repeat unit structure of Formula III ##STR00001##
In Formula III: R.sup.a represents one or more different tetracarboxylic acid component residues; and R.sup.b represents one or more different aromatic diamine residues or aromatic diisocyanate residues. 5-100 mol % of R.sup.a has Formula II ##STR00002##
In Formula II: R.sup.1 is H, halogen, cyano, hydroxyl, alkyl, heteroalkyl, alkoxy, heteroalkoxy, fluoroalkyl, silyl, hydrocarbon aryl, substituted hydrocarbon aryl, heteroaryl, substituted heteroaryl, ally, or vinyl; R.sup.2 is halogen, cyano, hydroxyl, alkyl, heteroalkyl, alkoxy, heteroalkoxy, fluoroalkyl, silyl, hydrocarbon aryl, substituted hydrocarbon aryl, heteroaryl, substituted heteroaryl, ally, or vinyl; R.sup.3 and R.sup.4 are the same or different and are alkyl, fluoroalkyl, or silyl; x and y are the same or different and are an integer from 0-2; and * indicates a point of attachment.

The present invention provides an anti-reflection film which has excellent optical properties at a low production cost. The anti-reflection film of the present invention has a low refractive index hard coat layer having low refractive index particles and a binder matrix which is formed by curing an ionizing radiation curable material on a transparent substrate. It is a feature of the anti-reflection film of the present invention that the low refractive index hard coat layer has two optically distinguishable layers from the transparent substrate side, namely, an intermediate layer and a localized layer wherein the low refractive index particles are localized, and the refractive index and optical thickness of the localized layer are in the range of 1.29-1.43 and in the range of 100-200 nm, respectively.

An optical film including: a cholesteric layer of a disk-like liquid crystal composition including a disk-like liquid crystal compound, in which the cholesteric layer exhibits a cholesteric liquid crystalline phase, and in which fluctuation of a helical pitch in a film thickness direction of the cholesteric layer is 2% or greater, and having a cholesteric liquid crystalline phase of a disk-like liquid crystal compound and a wide reflection bandwidth; a brightness enhancement film; a backlight unit with a brightness enhancement film; and a liquid crystal display device.

The laminated film includes a substrate film; and a cured layer obtained by curing a polymerizable composition includes a compound having a cyclic ether group, a polyfunctional (meth)acrylate compound having three or more (meth)acryloyl groups in one molecule, a radical polymerization initiator, and a cation polymerization initiator, in which an absorbance ratio P1/P2 in an infrared absorption spectrum of the cured layer is in a range of 4.40 to 15.00, and an absorbance ratio P2/P3 is in a range of 0.01 to 0.08, P1 is an absorbance at an absorption maximum peak in a wave number range of 3,650 to 3,200 cm.sup.1, P2 is an absorbance at an absorption maximum peak in a wave number range of 800 to 770 cm.sup.1, and P3 is an absorbance at an absorption maximum peak in a wave number range of 1,740 to 1,690 cm.sup.1.

An anti-glare film is prepared which have an absolute value of a chromaticity b* of transmitted light being 15 or less and a haze being 30% or greater. In this anti-glare film, the absolute value of the chromaticity b* of transmitted light may be 3 or less and a 60 gloss may be 25% or less. The anti-glare film includes a transparent substrate layer, and an anti-glare layer formed on at least one surface of the transparent substrate layer. The anti-glare layer may be a cured product of a curable composition including one or more types of a polymer component and one or more types of a curable resin precursor component, and in particular, at least two components selected from a polymer component and a curable resin precursor component can be phase separated through liquid phase spinodal decomposition. This anti-glare film has little yellowness and high anti-glare properties.

The present invention relates to optical elements, such as but not limited to ophthalmic elements, comprising an alignment facility for an optical dye. The optical elements include a substrate; and an alignment facility for an optical dye connected to at least a portion of the substrate, where the alignment facility is an at least partial coating of an at least partially ordered liquid crystal material having at least a first general direction.

An object of the invention is to provide a liquid crystal cell in which liquid crystal molecules do not permeate into a plastic substrate even in a case where the plastic substrate is largely deformed as it is stretched or contracted, and a three-dimensional structural liquid crystal cell using the liquid crystal cell. A liquid crystal cell according to the invention includes at least two plastic substrates and a liquid crystal layer, at least one plastic substrate is a heat-shrinkable film satisfying a heat shrinkage rate of 5% to 75%, a polymer layer which is obtained by polymerizing a composition including a monofunctional (meth)acrylate having a hydrophilic group between at least one plastic substrate and the liquid crystal layer is further included, and an absorption maximum wavelength the monofunctional (meth)acrylate is 190 to 250 nm.

A flexible display device includes a flexible display panel, a first outer member disposed on a surface of the flexible display panel, and a first adhesive member attaching the first outer member to the flexible display panel. The first adhesive member includes an ultraviolet curable resin. A conversion rate of the ultraviolet curable resin in a region of the first adhesive member corresponding to a folding region of the flexible display panel is lower than a conversion rate of other regions adjacent thereto.

An embodiment of the present invention provides a cover plate including a high stiffness base and a plurality of low stiffness patterns arranged in a hole or an indentation of the high stiffness base. The cover plate and a foldable display device including the cover plate can be foldable in various directions.

A tubular parison for forming a medical device balloon. The parison is formed of a polymeric material, for instance a thermoplastic elastomer. The parison has an elongation at break which is not more than 80% of the elongation of the bulk polymeric material. The elongation of the parison is controlled by altering extrusion conditions. Balloons prepared from the parisons provide higher wall strength and/or higher inflation durability than balloons prepared from conventional parisons of the same material.