摘要:
The present invention provides a microlens array produced by molding a resin obtained by reacting a silicon compound with a boron compound or an aluminum compound, in which the silicon compound is represented by the following formula (I): in which R1 and R2 each independently represent an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, or an aryl group, in which a plurality of R1's are the same or different and a plurality of R2's are the same or different; X represents a hydroxy group, an alkoxy group, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, or an aryl group; and n is 4 to 250. This microlens array has excellent heat resistance and light resistance even when applied to LEDs having an increased power and to LEDs emitting blue light having a short wavelength.
摘要:
The present invention provides a resin sheet for encapsulating an optical semiconductor element, the resin sheet containing an encapsulation resin layer, an adhesive resin layer, a metal layer and a protective resin layer, in which the encapsulation resin layer and the metal layer adhered onto the adhesive resin layer are disposed adjacently to each other, the protective resin layer is laminated on the encapsulation resin layer and the metal layer so as to cover both the encapsulation resin layer and the metal layer, and the encapsulation resin layer has a taper shape expanding toward the protective resin layer; and an optical semiconductor device containing an optical semiconductor element encapsulated by using the resin sheet. The optical semiconductor element encapsulation resin sheet of the invention can be suitably used for back lights of liquid crystal screens, traffic signals, large-sized outdoor displays, billboards and the like.
摘要:
A modified polyaluminosiloxane obtained by treating a polyaluminosiloxane with a silane coupling agent represented by the formula (I): wherein each of R1, R2 and R3 is independently an alkyl group or an alkoxy group; X is a methacryloxy group, a glycidoxy group, an amino group, a vinyl group or a mercapto group, with proviso that at least two of R1, R2 and R3 are alkoxy groups. The photosemiconductor element encapsulating material of the present invention is suitably used for, for example, photosemiconductor devices mounted with blue or white LED elements (backlights for liquid crystal displays, traffic lights, outdoor big displays, advertisement sign boards, and the like).
摘要:
A modified polyaluminosiloxane obtained by treating a polyaluminosiloxane with a silane coupling agent represented by the formula (I): wherein each of R1, R2 and R3 is independently an alkyl group or an alkoxy group; X is a methacryloxy group, a glycidoxy group, an amino group, a vinyl group or a mercapto group, with proviso that at least two of R1, R2 and R3 are alkoxy groups. The photosemiconductor element encapsulating material of the present invention is suitably used for, for example, photosemiconductor devices mounted with blue or white LED elements (backlights for liquid crystal displays, traffic lights, outdoor big displays, advertisement sign boards, and the like).
摘要:
The present invention relates to a process for producing an optical semiconductor device, the process including: disposing a sheet for optical-semiconductor-element encapsulation including a resin sheet A and a plurality of resin layers B discontinuously embedded in the resin sheet A and a plurality of optical semiconductor elements mounted on a substrate in such a way that each of the plurality of optical semiconductor elements faces either one of the plurality of resin layers B; and followed by embedding each of the plurality of optical semiconductor elements in either one of the plurality of resin layers B. According to the process of the invention, optical semiconductor elements can be embedded at once. As a result, an optical semiconductor device which is excellent in LED element protection and durability can be easily obtained. Consequently, the optical semiconductor device obtained can have a prolonged life.
摘要:
To provide a pressure-sensitive adhesive sheet used during processing articles such as semiconductor wafers and laminate sheet used for such a pressure-sensitive adhesive sheet, which does not contaminate or break the semiconductor wafers during the processing and can minimize the curl of the articles due to residual stress of the pressure-sensitive adhesive sheet, a multi-layer sheet includes a composite film containing a urethane polymer and a vinyl-based polymer as effective components and a first film made of a material different from that of the composite film, wherein the urethane polymer is formed from a polyolefin diol and a polyisocyanate. A pressure-sensitive adhesive sheet is obtained by providing a pressure-sensitive adhesive layer on at least one side of the multi-layer sheet.
摘要:
To provide a pressure-sensitive adhesive that is used in processing an article such as a semiconductor wafer, the pressure-sensitive adhesive sheet is one that has a base, an intermediate layer and a pressure-sensitive adhesive layer in order, wherein the intermediate layer has an elastic modulus at elongation at 23° C. of 1 MPa or more and 100 MPa or less, the intermediate layer includes an acrylic polymer obtained by polymerization of a (meth) acrylic monomer mixture containing 1% by weight or more and 20% by weight or less of a nitrogen-containing acrylic monomer, the acrylic polymer containing 20% by weight or less of a polymer component having a molecular weight of 100,000 or less, and the base includes at least one film having an elastic modulus at in tension at 23° C. of 0.6 GPa or more.
摘要:
To provide a pressure-sensitive adhesive sheet, which is used in processing an article such as a semiconductor wafer, the pressure-sensitive adhesive sheet has a base, an intermediate layer and a pressure-sensitive adhesive layer in this order, wherein the intermediate layer has an elastic modulus in tension at 23° C. of 10 MPa or more and 100 Mpa or less, the intermediate layer includes an acrylic-based polymer obtained by polymerization of a mixture containing 70 to 99 parts by weight of a (meth)acrylate monomer and 1 to 30 parts by weight of an unsaturated carboxylic acid based on 100 parts by weight of total monomers, and the base includes at least one film having an elastic modulus in tension at 23° C. of 0.6 GPa or more.
摘要:
According to the invention, a pressure-sensitive adhesive sheet for use in dicing of a workpiece is provided which comprises a base film and at least a pressure-sensitive adhesive layer provided on the base film, wherein the pressure-sensitive adhesive layer comprises an acrylic polymer that contains at least 5% by weight of a monomer unit having an alkoxyl group in its side chain. According to the structure, there are provided a pressure-sensitive adhesive sheet for dicing that can produce good pickup performance even after a long time and a method of picking up a product worked with the pressure-sensitive adhesive sheet.
摘要:
The re-peelable pressure-sensitive adhesive sheet of the invention is a re-peelable pressure-sensitive adhesive sheet, which comprises an adhesive layer formed over a base film, and which further comprises at least one intermediate layer between the base film and the adhesive layer, the intermediate layer having a storage elastic modulus (G′) of 3.0×104 to 1.0×108 Pa at 23° C. and a storage elastic modulus (G′) of 1.0×103 to 8.0×104 Pa at 200° C.