Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):

##STR00001## wherein at least one of R.sup.1a to R.sup.9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2):

##STR00002## wherein R.sup.10a to R.sup.12a each represent a divalent hydrocarbon group or the like; and R.sup.13a represents a monovalent hydrocarbon group or the like.

Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):

##STR00001## wherein at least one of R.sup.1a to R.sup.9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2):

?R.sup.10a?.sub.mSH(i-1)

?R.sup.11a?.sub.nS?R.sup.12aS?.sub.pR.sup.13a(i-2) wherein R.sup.10a to R.sup.12a each represent a divalent hydrocarbon group or the like; and R.sup.13a represents a monovalent hydrocarbon group or the like.

Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):

##STR00001## wherein at least one of R.sup.1a to R.sup.9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2):

?R.sup.10a?.sub.mSH(i-1)

?R.sup.11a?.sub.nS?R.sup.12aS?.sub.pR.sup.13a(i-2) wherein R.sup.10a to R.sup.12a each represent a divalent hydrocarbon group or the like; and R.sup.13a represents a monovalent hydrocarbon group or the like.

The present invention is directed to adjustable chromophore compounds and materials (e.g., ophthalmic lens materials) incorporating those compounds. The adjustable chromophore compounds include a chemical moiety that structurally changes upon exposure to predetermined electromagnetic radiation (e.g., two photon radiation) as well as lens materials, particularly intraocular lens materials that incorporate those compounds.

The present invention is directed to adjustable chromophore compounds and materials (e.g., ophthalmic lens materials) incorporating those compounds. The adjustable chromophore compounds include a chemical moiety that structurally changes upon exposure to predetermined electromagnetic radiation (e.g., two photon radiation) as well as lens materials, particularly intraocular lens materials that incorporate those compounds.

Provided is an electronic apparatus including: a substrate; a pixel defined layer defining a plurality of pixel areas and a plurality of non-pixel areas on the substrate; a plurality of light-emitting diodes arranged on the plurality of the pixel areas; and a thin film encapsulation portion including an organic film and sealing the pixel defined layer, or the plurality of the light-emitting diodes and the pixel defined layer, wherein the organic film includes a curable material of a composition for forming an organic film, the composition including at least one UV absorber.

Provided is an electronic apparatus including: a substrate; a pixel defined layer defining a plurality of pixel areas and a plurality of non-pixel areas on the substrate; a plurality of light-emitting diodes arranged on the plurality of the pixel areas; and a thin film encapsulation portion including an organic film and sealing the pixel defined layer, or the plurality of the light-emitting diodes and the pixel defined layer, wherein the organic film includes a curable material of a composition for forming an organic film, the composition including at least one UV absorber.

The present invention has an object to provide a polymerizable liquid crystal composition capable of manufacturing an optically anisotropic film having excellent light fastness; and an optically anisotropic film, an optical film, a polarizing plate, an image display device, and an organic electroluminescent display device, each of which uses the polymerizable liquid crystal composition. The polymerizable liquid crystal composition of an embodiment of the present invention contains a polymerizable liquid crystal compound having reverse-wavelength dispersion properties and an ultraviolet absorber represented by Formula (1), in which a maximum absorption wavelength A of the polymerizable liquid crystal compound and a maximum absorption wavelength B of the ultraviolet absorber satisfy Formula (2), and a content of the ultraviolet absorber is 1% to 20% by mass with respect to a content of the polymerizable liquid crystal compound.

##STR00001##

Described herein are dimethyl acetal-containing UV-absorbing compounds and their uses in preparing UV-absorbing polyvinyl alcohol prepolymers suitable for producing UV-absorbing contact lenses capable of blocking ultra-violet (UV) radiation and optionally (but preferably) violet radiation with wavelengths from 380 nm to 440 nm, thereby protecting eyes to some extent from damages caused by UV radiation and potentially from violet radiation. This invention also provides a UV-absorbing polyvinyl alcohol prepolymer.

Described herein are dimethyl acetal-containing UV-absorbing compounds and their uses in preparing UV-absorbing polyvinyl alcohol prepolymers suitable for producing UV-absorbing contact lenses capable of blocking ultra-violet (UV) radiation and optionally (but preferably) violet radiation with wavelengths from 380 nm to 440 nm, thereby protecting eyes to some extent from damages caused by UV radiation and potentially from violet radiation. This invention also provides a UV-absorbing polyvinyl alcohol prepolymer.