Abstract:
A light-emitting device includes a substrate including a mirror surface region on its upper surface, a semiconductor light-emitting element disposed in the mirror surface region, and an encapsulating layer joined onto the upper surface of the substrate. The encapsulating layer includes a lower layer that is in contact with the upper surface of the substrate, covers the surrounding of the semiconductor light-emitting element, and contains phosphor; and an upper layer that is positioned on the lower layer, and has a larger phosphor content per unit area than that of the lower layer.
Abstract:
An encapsulating sheet is formed from an encapsulating resin composition which contains an encapsulating resin and silicone microparticles, and the mixing ratio of the silicone microparticles with respect to the encapsulating resin composition is 20 to 50 mass %.
Abstract:
Provided is a pressure-sensitive adhesive sheet for semiconductor wafer processing that is excellent in adhesiveness with a semiconductor wafer, and that has light peelability and suppresses adhesive residue. The pressure-sensitive adhesive sheet for semiconductor wafer processing includes in this order: a base material; an intermediate layer; and a UV-curable pressure-sensitive adhesive layer. The intermediate layer has a storage modulus of elasticity at room temperature, G′1RT, of from 300 kPa to 2,000 kPa, and a storage modulus of elasticity at 80° C., G′180, of from 10 kPa to 500 kPa. The UV-curable pressure-sensitive adhesive layer has a storage modulus of elasticity at room temperature, G′2RT, of from 100 kPa to 1,000 kPa, and a storage modulus of elasticity at 80° C., G′280, of from 10 kPa to 1,000 kPa. G′1RT/G′2RT is 1 or more.
Abstract:
A light-emitting device includes a substrate including a mirror surface region on its upper surface, a semiconductor light-emitting element disposed in the mirror surface region, and an encapsulating layer joined onto the upper surface of the substrate. The encapsulating layer includes a lower layer that is in contact with the upper surface of the substrate, covers the surrounding of the semiconductor light-emitting element, and contains phosphor; and an upper layer that is positioned on the lower layer, and has a larger phosphor content per unit area than that of the lower layer.
Abstract:
An encapsulating sheet is formed from an encapsulating resin composition which contains an encapsulating resin and silicone microparticles, and the mixing ratio of the silicone microparticles with respect to the encapsulating resin composition is 20 to 50 mass %.
Abstract:
A method for producing an encapsulating layer-covered semiconductor element includes a disposing step of disposing a semiconductor element on a support, an encapsulating step of embedding and encapsulating the semiconductor element by an encapsulating layer in an encapsulating sheet including a peeling layer and the encapsulating layer laminated below the peeling layer and made from a thermosetting resin before complete curing, and a heating step of heating and curing the encapsulating layer after the encapsulating step. The heating step includes a first heating step in which the encapsulating sheet is heated under a normal pressure at a first temperature, a peeling step in which the peeling layer is peeled from the encapsulating layer after the first heating step, and a second heating step in which the encapsulating layer is heated at a second temperature that is higher than the first temperature after the peeling step.