Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

Abstract: A display device includes a first substrate. A transistor is disposed on the first substrate. A light-emitting element is connected to the transistor. An insulating layer is disposed between the transistor and the light-emitting element. A second substrate at least partially overlaps the first substrate. A color conversion layer is disposed on the second substrate. The insulating layer includes a first insulating layer and a second insulating layer. A distance between the first insulating layer and the first substrate is less than a distance between the second insulating layer and the first substrate. The first insulating layer includes a light blocking material.

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

Abstract: The present disclosure relates to a microneedle comprising a microfiber network structure, and more specifically, relates to a microneedle which comprises an insoluble microfiber network structure comprised in a substrate portion of a dissolving microneedle, so that it can deliver a large amount of an aqueous solution of drugs to skin through a hole for drug injection on the back side of a patch without including drugs in the microneedle, also regardless of drug types.

Abstract: Provided in the present disclosure is a composition comprising hydroquinone or a derivative thereof as an active ingredient, and characterized in that the hydroquinone or the derivative thereof is stabilized by means of poloxamer. The composition of the present disclosure increases the soluble concentration of the hydroquinone or the derivative thereof, can have high melt stability without precipitation even at high concentration in water, can enhance storage stability by preventing oxidation reaction to external stimulations such as heat, oxygen and light, can prevent discoloration, and thus has reduced toxicity induced by an oxidation product of the hydroquinone and can reduce inflammatory response. Also, the composition of the present disclosure can enhance whitening efficacy by enhancing the skin permeability of the hydroquinone or the derivative thereof by means of micelles, and thus is useful for a whitening activity having hydroquinone or a derivative thereof as an active ingredient.

Abstract: The present disclosure relates to a solid microneedle structure prepared using a water-insoluble polymer and a technique for manufacturing the same, wherein the technique can control the drug release rate of the microneedle: a rapid-release type or a sustained release type, the drug included in the microneedle may be various cosmetic or pharmaceutical active ingredients, and the microneedle can have an appropriate release rate suitable for the drug by the method of the invention.

Abstract: Provided is a composition for improving wrinkles including a high-content/sustained-release retinoid capsule. The high-content/sustained-release retinoid capsule according to the presently claimed subject matter can minimize skin side effects and maximize wrinkle improvement effects by significantly increasing the retinoid content in the capsule and stability and controlling the release rate.

Abstract: A makeup base cosmetic composition for skin according to the present subject matter including biocellulose microfibrils, such that color cosmetics applied on the skin can be easily cleansed due to a dense network of a three-dimensional network structure formed by the microfibrils.

Abstract: The present disclosure relates to a composition for improving optical characteristics of skin, which improves changes of optical characteristics of skin and skin texture, changes of skin tone such as dullness, and the like, caused by progress of keratinization, by applying an optical clearing agent to skin, and thereby, it comprises an optical clearing agent in the composition, thereby having an effect of reducing crystallization of constituents as the optical clearing agent penetrates between keratinocytes, and reducing light scattering as the substance for improving optical characteristics penetrated in the keratinocytes remains in the keratinocytes and binds to water, and through this, improving skin clearing, skin tone and skin texture, and therefore, it may be very usefully used as skin external preparation and cosmetic compositions.

Abstract: The present disclosure relates to a networked dispersion of biocellulose microfibrils in water wherein the biocellulose microfibrils have carboxylic groups substituted for alcohol groups, are 30-60 nm in number average diameter with a maximum diameter of 60-100 nm, and are dispersed in an aqueous phase while forming a network. The networked dispersion of biocellulose microfibrils in water according to the present disclosure exhibits excellent skin compatibility and has the effect of allowing the skin to increase in water absorption, elasticity and smoothness. In addition, not only does the networked dispersion of biocellulose microfibrils in water form micro-networks on the skin to prevent microdust from being brought into direct contact with the skin, but also negative charges of the networked dispersion repel those microdust to reduce microdust attachment, so that the present disclosure can be widely utilized in developing a variety of compositions for effectively blocking microdust.