Patent ID: 8841689
Filing Date: 2014-09-23
Classification: H01L,Y10T

Abstract:
1. A heat-curable silicone resin sheet comprising: a layer (2) including a heat-curable silicone resin composition containing phosphors that is in a plastic solid or semi-solid state at room temperature; and a layer (1) including a heat-curable silicone resin composition containing essentially no phosphors that is in a plastic solid or semi-solid state at room temperature, wherein the layer (2) includes the heat-curable silicone resin composition containing: (A-1) a resin-structured organopolysiloxane consisting essentially of R R R a represents 0, 1, or 2, b represents 1 or 2, a+b is either 2 or 3, and at least a portion of the R (B-1) a resin-structured organohydrogenpolysiloxane consisting essentially of R R c represents 0, 1, or 2, d represents 1 or 2, c+d is either 2 or 3, and at least a portion of the R a molar ratio of hydrogen atoms bonded to silicon atoms within component (B-1) with respect to the sum of the vinyl groups and the allyl groups within component (A-1) is in a range of 0.1 to 4.0; (C-1) an effective amount of at least one platinum group metal based catalyst for curing; and (D) at least one phosphor, and the layer (1) includes the heat-curable silicone resin composition containing essentially no phosphors, the composition containing: (A-2) a resin-structured organopolysiloxane consisting essentially of R R R a represents 0, 1, or 2, b represents 1 or 2, a+b is either 2 or 3, and at least a portion of the R (B-2) a resin-structured organohydrogenpolysiloxane consisting essentially of R R c represents 0, 1, or 2, d represents 1 or 2, c+d is either 2 or 3, and at least a portion of the R a molar ratio of hydrogen atoms bonded to silicon atoms within component (B-2) with respect to the sum of the vinyl groups and the allyl groups within component (A-2) is in a range of 0.1 to 4.0; and (C-2) an effective amount of at least one platinum group metal based catalyst for curing.