Abstract: A microlens array having a resin layer forming convex lenses, wherein the resin layer comprises a cured product of a polycarbodiimide resin represented by formula: wherein R represents a diisocyanate residue; R1 represents a monoisocyanate residue; and n represents an integer of 1 to 100.

Abstract: The present invention provides A direct-type backlight having: a resin sealing member including at least one resin layer, which has a light reflecting section formed on the outermost surface of the resin sealing member; an optical semiconductor element sealed by the resin sealing member; and plural circular light scattering grooves formed concentrically on at least one surface of the resin layer, wherein an area of a circle in the center and an area among the respective concentric circles are substantially the same.

Abstract: A microlens array having a resin layer forming convex lenses, wherein the resin layer comprises a cured product of a polycarbodiimide resin represented by formula:

Abstract: The present invention provides a production method of an anisotropic conductive film, which method includes the steps of

Abstract: The present invention provides a thermally conductive sheet that adheres finely to a semiconductor element and a heat dissipating plate, even with a low pressure at which a large-scaled semiconductor element cannot be broken, and that affords fine thermal conductivity, and a semiconductor device using this sheet. The thermally conductive sheet of the present invention has plural metal protrusions on at least one surface of a metal foil, wherein at least a part of gaps between the plural metal protrusions is filled with a resin, and the resin melts and/or fluidizes by heating and/or pressurizing to show an adhesion function. The semiconductor device of the present invention includes the above-mentioned thermally conductive sheet of the present invention and at least a semiconductor element and a heat dissipating plate adhered thereto.

Abstract: The present invention provides a production method of an anisotropic conductive film, which method includes the steps of (a) winding an insulated wire around a core member to form one roll of a winding layer, this insulated wire including a metal conductor wire and a coating layer made from an insulating resin, this coating layer being formed on the wire, placing an insulating resin film on the obtained winding layer, and repeating the winding and the placing to give a laminate alternately having the winding layer having a single row of insulated wires and an insulating resin layer made from the insulating resin film, (b) partially or entirely melting at least one of the coating layer and the insulating resin layer to integrate the winding layer and the insulating resin layer, and (c) slicing the laminate along a plane forming an angle with the insulated wire in a desired film thickness.

Abstract: The present invention provides a production method of an anisotropic conductive film, which method includes the steps of

Abstract: Naphthalene derivatives represented by the formula (I): ##STR1## wherein the symbol ##STR2## --X-- represents --O-- or --S--, .dbd.Y-- represents .dbd.N-- or .dbd.CR.sup.5 --, R.sup.1, C.sup.2, R.sup.3, R.sup.4 and R.sup.5 represent hydrogen, halogen, alkyl and the like,R.sup.6 represents hydrogen, alkyl, aryl and the like,n represents an integer of 0 to 3, --- represents a single bond or a double bond, which are useful for reducing blood sugar and blood lipid levels are provided.