Abstract: The present invention provides a transparent substrate excellent in solvent crack resistance, toughness, heat resistance, and flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a first resin layer placed on at least one side of the inorganic glass, wherein: the first resin layer contains a resin compound having a weight-average molecular weight in terms of polystyrene of 8×104 to 100×104; and no solvent crack occurs when a mixed solvent containing 20 wt % to 95 wt % of at least one kind of solvent selected from the group consisting of acetone, N-methylpyrrolidone, dimethyl sulfoxide, and N,N-dimethylformamide is brought into contact with the substrate.

Abstract: There is provided a manufacturing method for a transparent substrate excellent in bending property, flexibility, impact resistance, and external appearance. A manufacturing method for a transparent substrate according to an embodiment of the present invention includes: a step A of applying a thermoplastic resin (A) composition solution onto a support backing having solvent permeability to form an applied layer; a step B of attaching at least one surface of an inorganic glass and the applied layer to each other via an adhesive composition to form a laminate; a step C of subjecting the laminate to a first heat treatment to reduce an amount of a solvent remaining in the applied layer to a predetermined amount; and a step D including peeling the support backing from the laminate and subjecting the resultant to a second heat treatment to dry the applied layer, thereby forming a thermoplastic resin layer.

Abstract: There is provided a substrate for a display device that has excellent gas barrier properties, flexibility, heat resistance and transparency, and has excellent dimensional stability, operability, and secondary processing characteristics. A substrate for a display device according to the present invention includes: an inorganic glass; and resin layers placed on both sides of the inorganic glass. Preferably, a ratio drsum/dg between a total thickness drsum of the resin layer and a thickness dg of the inorganic glass is 0.5 to 2.2. Preferably, the resin layers on both sides of the inorganic glass are each composed of the same material, each have the same thickness, and a thickness of each of the resin layers is equal to the thickness of the inorganic glass. Preferably, an average coefficient of linear expansion at 170° C. of the substrate for a display device is 20 ppm ° C.?1 or less.

Abstract: The present invention provides a transparent substrate excellent in solvent crack resistance, toughness, heat resistance, and flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a first resin layer placed on at least one side of the inorganic glass, wherein: the first resin layer contains a resin compound having a weight-average molecular weight in terms of polystyrene of 8×104 to 100×104; and no solvent crack occurs when a mixed solvent containing 20 wt % to 95 wt % of at least one kind of solvent selected from the group consisting of acetone, N-methylpyrrolidone, dimethyl sulfoxide, and N,N-dimethylformamide is brought into contact with the substrate.

Abstract: The present invention provides a transparent substrate that significantly prevents the progress of a crack in a thin-plate glass and the rupture of the glass, and is excellent in bending property and flexibility. A transparent substrate according to an embodiment of the present invention includes: a thin-plate glass having a thickness of 10 ?m to 100 ?m; and a resin layer on at least one side of the thin-plate glass, wherein a shrinkage stress of the resin layer on the thin-plate glass is 5 MPa or more.

Abstract: There is provided a transparent substrate which can be reduced in thickness, which is excellent in adhesiveness between an inorganic glass and a resin layer under a high-temperature and high-humidity environment, bending property, flexibility, and impact resistance, and which significantly prevents the progress of a crack in a glass. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a resin layer, which is obtained by applying a solution of a thermoplastic resin onto one side or both sides of the inorganic glass, wherein: the solution comprises a first thermoplastic resin having a hydroxy group at a terminal; the inorganic glass and the resin layer comprise an epoxy group-terminated coupling agent layer therebetween; the coupling agent layer is directly formed on the inorganic glass; and the resin layer is directly formed on the coupling agent layer.

Abstract: There is provided a transparent substrate which is excellent in dimensional stability, which significantly prevents the progress of a crack in an inorganic glass and the rupture of the inorganic glass, and which is excellent in flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass having a thickness of 10 ?m to 100 ?m; and a resin layer on one side, or each of both sides, of the inorganic glass, wherein: a ratio of a total thickness of the resin layer to a thickness of the inorganic glass is 0.9 to 4; the resin layer has a modulus of elasticity at 25° C. of 1.5 GPa to 10 GPa; and the resin layer has a fracture toughness value at 25° C. of 1.5 MPa·m1/2 to 10 MPa·m1/2.

Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.

Abstract: The present invention provides an optical element having a new structure that can he applied to a directional diffusion film suitably with a simpler process than before. An optical element includes a plurality of through holes in a transparent film matrix. The plurality of through holes are placed in a state where axial directions thereof are approximately in parallel with one another, and the axial directions of the through holes are inclined or approximately parallel to a thickness direction of the transparent film matrix.

Abstract: There is provided a substrate for a display device that has excellent gas barrier properties, flexibility, heat resistance and transparency, and has excellent dimensional stability, operability, and secondary processing characteristics. A substrate for a display device according to the present invention includes: an inorganic glass; and resin layers placed on both sides of the inorganic glass. Preferably, a ratio drsum/dg between a total thickness drsum of the resin layer and a thickness dg of the inorganic glass is 0.5 to 2.2. Preferably, the resin layers on both sides of the inorganic glass are each composed of the same material, each have the same thickness, and a thickness of each of the resin layers is equal to the thickness of the inorganic glass. Preferably, an average coefficient of linear expansion at 170° C. of the substrate for a display device is 20 ppm° C.?1 or less.