Curable silicone composition and optical semiconductor device
A technology of optical semiconductors and compounds, applied in semiconductor devices, electrical components, coatings, etc., can solve the problems of low transmittance, inability to fully suppress the discoloration of silver electrodes or silver-plated substrates of optical semiconductor devices, and achieve the effect of discoloration suppression
Pending Publication Date: 2020-02-21
DOW SILICONES CORP
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Problems solved by technology
[0004] However, it has been determined that such curable silicone compositions have a problem because the cured product of the composition has low transmittance due to containing zinc compound and polyoxyalkylene compound
Furthermore, even this curable silicone composition is problematic in that it cannot sufficiently suppress discoloration of silver electrodes or silver-plated substrates in optical semiconductor devices due to sulfur-containing gases in the air
Method used
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[0081] Hereinafter, the curable silicone composition and the optical semiconductor device of the present invention will be described in detail using practical examples and comparative examples. In the chemical formula, Me represents a methyl group, Vi represents a vinyl group, Ph represents a phenyl group, Ep represents a 3-glycidyloxypropyl group, and EO represents an oxirane group.
[0082] The following components were used as component (A).
[0083] Component (a-1): organopolysiloxane represented by the following average unit formula:
[0084] (MePhViSiO 1 / 2 ) 0.23 (PhSiO 3 / 2 ) 0.77
[0085] (Vinyl group content = 4.6% by mass)
[0086] Component (a-2): organopolysiloxane having a viscosity of 5 mPa·s at 25°C and represented by the following formula:
[0087] (Me 2 ViSiO) 3 SiPh
[0088] (Vinyl group content = 19.8% by mass)
[0089] Component (a-3): diphenylpolysiloxane having a viscosity of 3,000 mPa·s at 25°C and represented by the following average formula: ...
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Abstract
The present invention provides a curable silicone composition for forming a cured product which inhibits the discoloration of silver electrodes or a silver-plated substrate in an optical semiconductordevice due to a sulfur-containing gas, wherein the composition comprises at least one type of a crown compound. In addition, the present invention provides an optical semiconductor device having excellent reliability after a sulfur resistance test, in which an optical semiconductor device on silver electrodes or a silver-plated substrate is sealed, covered, or adhered with a cured product of thecomposition.
Description
technical field [0001] The present invention relates to a curable silicone composition and an optical semiconductor device produced by using the composition. Background technique [0002] The curable silicone composition cured by a hydrosilylation reaction or a condensation reaction is used for sealing, covering or adhering an optical semiconductor element in an optical semiconductor device. There is a need for a curable silicone composition capable of suppressing discoloration of silver electrodes or silver-plated substrates in optical semiconductor devices due to sulfur-containing gases such as hydrogen sulfide in the air. [0003] For example, Japanese Unexamined Patent Application Publication No. 2012-111850 A discloses a silicone resin composition comprising: 100 parts by mass of a curable silicone resin composition, 0.01 to 5 parts by mass of a zinc compound , and 0.01 to 5 parts by mass of a compound having a polyoxyalkylene chain, wherein the curable silicone resin ...
Claims
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IPC IPC(8): C08G77/14C08G77/20H01L33/56
CPCC08G77/20H01L33/56H01L33/60H01L33/62C08G77/12C08L83/04C08L83/00C08L71/02C08K5/56C08G77/14C08L2203/206C09D183/04C09J183/04H01L33/40
Inventor 姜贤智陆周荣
Owner DOW SILICONES CORP