Hot-melt type curable silicone composition for compression molding or laminating
View Patent ↗The present invention relates to a hot-meltable curable silicone composition for compression molding or laminating and a laminate provided with at least one layer comprising the composition, as well as a semiconductor device using these and a method of manufacturing the same. In accordance with the present invention, it is possible to efficiently manufacture a semiconductor device provided with a hemi-spheroidal lens- or dome-shaped seal. In the present invention, it is easy to control the shape of the seal, and the seal does not contain any bubbles. In the present invention, it is also easy to control the thickness of the coating layer of the semiconductor device apart from the seal.
1. A laminate including at least one layer comprising a hot-melt type curable silicone composition selected from the group consisting of:
(1) an unreacted hydrosilylation curable silicone composition;
(2) a hydrosilylation curable silicone composition obtained by partially cross-linking an unreacted hydrosilylation curable silicone composition; and
(3) a hydrosilylation curable silicone composition comprising: a crosslinked product having silicon atom-bonded hydrogen atoms and/or alkenyl groups; and at least one type of hydrosilylation reactive component, the crosslinked product being obtained by cross-linking an unreacted hydrosilylation reactive silicone composition; and
wherein the laminate comprises at least one layer comprising at least one type of non-hot melt curable silicone composition or at least one type of organopolysiloxane block copolymer.
2. The laminate according to claim 1 , wherein the organopolysiloxane block copolymer comprises:
from 40 to 90 mol % of a disiloxy unit represented by [R 6 2 SiO 2/2 ];
from 10 to 60 mol % of a trisiloxy unit represented by [R 7 SiO 3/2 ]; and
from 0.5 to 2.5 mol % of a silanol group represented by [≡SiOH];
each R 6 independently representing a C 1 -C 30 hydrocarbon group;
each R 7 independently representing a C 1 -C 20 hydrocarbon group;
the disiloxy unit [R 6 2 SiO 2/2 ] being present in a straight chain block comprising an average of from 10 to 400 disiloxy units [R 6 2 SiO 2/2 ];
the trisiloxy unit being present in a non-straight chain block having a molecular weight of at least 500 g/mol; and
each straight chain block being bonded to at least one non-straight chain block.
3. The laminate according to claim 2 , wherein the organopolysiloxane block copolymer has a molecular weight of at least 20,000 g/mol or a refractive index of at least 1.5.
4. The laminate according to claim 1 , wherein each of the layers differs from each other in terms of at least one physical property selected from the group consisting of refractive index, hardness, light transmission rate, water vapor transmission rate, thermal conductivity, thermal expansion, surface tack, elastic modulus, and curing rate.
5. The laminate according to claim 1 , wherein the hardness and/or refractive index of at least one layer varies in the through-thickness direction of the layer.
6. The laminate according to claim 1 , wherein at least one layer has a patterned shape.
7. The laminate according to claim 1 , wherein at least one layer comprises at least one type of inorganic particle or a phosphor.
8. The laminate according to claim 1 , further includes at least two layers comprising different types of phosphors.
9. A method of manufacturing a sealed semiconductor device comprising laying the laminate of claim 1 over an element of the semiconductor device and encapsulating the element by performing compression molding or laminating of the sheet onto the element.
10. A sealed semiconductor device produced according to the method of claim 9 .