A medium includes a heat-sensitive medium and an adhesive medium. The heat-sensitive medium includes a first base material and a first color-developing layer. The first base material has a transparency. The first color-developing layer has a transparency. The first color-developing layer is provided on a first surface of the first base material. The first color-developing layer is configured to become less transparent to develop a first color when heated to a first temperature or higher. The adhesive medium is to be superimposed on and bonded to the heat-sensitive medium in their thickness direction. The adhesive medium includes a second base material and an adhesive layer provided on the second base material. The adhesive medium is to be bonded to the heat-sensitive medium on an opposite side of the first color-developing layer from the first base material. The first base material has one or more images pre-printed thereon.

The present disclosure is directed to a film formulation that resulted in a substantially non-migratory cold seal release film with improved blocking resistance. Specifically, the multilayered biaxially oriented polypropylene film can include a core layer of polypropylene homopolymer; a first outer layer on one side of the core layer that can be suitable for sealing, printing, or coating; and a second outer layer on the opposite side of the core layer that is a blocking resistant layer comprising thermoplastic polymers which reduce blocking tendency.

Resin compositions, layers, and interlayers comprising two or more thermoplastic polymers and at least one RI balancing agent for adjusting the refractive index of at least one of the resins or layers is provided. Such compositions, layers, and interlayers exhibit enhanced optical properties while retaining other properties, such as impact resistance and acoustic performance.

Multi-layer optical films that can be utilized as polarizer or mirror films and can be incorporated into optical stacks. The optical film includes a plurality of alternating polymeric first and second interference layers numbering greater than 50 and disposed between, and integrally formed with, first and second skin layers, each of the first and second interference layers has an average thickness less than 250 nm. The first and second interference layers and the first and second skin layers are compositions that include polyester.

Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a first phase difference layer, a second phase difference layer and a third phase difference layer which are sequentially stacked on the lower surface of the polarizer. The first phase difference layer comprises a positive C phase difference layer. The second phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 200 nm to 280 nm in a wavelength of 550 nm. The third phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 80 nm to 145 nm in a wavelength of 550 nm. When the absorption axis of the polarizer is 0°, the angle formed by the slow axis of the second phase difference layer is approximately +14° to +24° or approximately −24° to −14°, and the angle formed by the slow axis of the third phase difference layer is approximately +79° to +89° or approximately −89° to −79°.

The present disclosure discloses an emblem structure in which an emblem is coupled to a part in an integral form, thereby minimizing the amount of protrusion and an image is implemented in a distorted form, and advancing the quality of a product. The emblem structure includes a base layer, an image layer disposed on an outer surface of the base layer or to be spaced apart from the outer surface, and a transparent layer deposited on the base layer to cover the image layer. The transparent layer is configured such that light is transmitted and refracted and that the light reflected by the base layer and the image layer is lost, thereby improving visual recognition of the image layer.

The present disclosure relates to a cover window for a flexible display device comprising: a light-transmitting substrate; and a first hard coating layer and a second hard coating layer which are formed on both sides of the light-transmitting substrate, respectively, wherein each of the first hard coating layer and the second hard coating layer has IR spectra in which a ratio of the amide C═O peak to the ester C═O peak is in a predetermined range, and a flexible display device including the cover window for a flexible display device.

Proposed is a flexible composite cover window including a transparent glass-fabric reinforced plastic film that adheres to a rear surface or a front surface of the glass, in order to improve the pen-drop impact resistance of a glass cover window used in a flexible display. An effect of the embodiment is to provide a flexible cover window in which the glass-fabric reinforced plastic film protects the glass against impact applied to the glass or offsets the impact such that the pen-drop impact resistance is improved and strength and flexibility are secured.

A cured product contains a dispersant, inorganic particles, and a resin that is a product of polymerization or copolymerization of a curable resin. The dispersant contains a compound represented by a formula R—X, wherein R represents a group having an acryloyloxy group or a methacryloyloxy group at an end of the molecule thereof, and X represents a carboxy group. The dispersant content is 10 parts by volume to 20 parts by volume relative to 100 parts by volume of the cured product. The curable resin contains at least one monomer having an N number of polymerizable reactive group, wherein N represents an integer of 2 or more. The proportion of the at least one monomer is 25 parts by volume to 76 parts by volume relative to 100 parts by volume of the cured product.

Provided is a foldable display that is excellent in mass production applicability and unlikely to have image distortion at the folding portion of the display after repeated folding, as well as a mobile device equipped therewith. The foldable display contains a surface protection film and a polarizer. The surface protection film is composed of a polyester film, and the angle made by the slow axis of the polyester film with the absorption axis of the polarizer is 10 to 80°. The polyester film has a refractive index in the bending direction of 1.590 to 1.620, a refractive index in the direction of a folding portion of 1.670 to 1.700, a refractive index in the thickness direction of 1.520 or less, and a density of 1.380 g/cm.sup.3 or more, wherein the bending direction refers to a direction orthogonal to the folding portion of the polyester film to be folded.