Silicone containing encapsulant
AssigneeEverlight USA, Inc.
InventorsTsung-Yi Chao, Wen-Jeng Lee, Der-Gun Chou, Yen-Cheng Li, Meng-Huang Yan
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Abstract
The present invention relates to a silicone containing encapsulant composition. One embodiment of the encapsulant composition comprises (a) 30˜60 weight % of an epoxy resin; (b) 30˜60 weight % of an acid anhydride curing agent; (c) 0.1˜30 weight % of a Carbinol function silicone resin which can form a homogeneous mixture with (a) and (b) described above; and (d) 0.1˜5 weight % of a reactive UV absorber or HALS; and reactive anti-oxidant and/or phosphor containing flame retardant. The encapsulant composition can be used for a solid state light emitting device to achieve low internal stress and better -anti-yellowing performance.
Claims19
A silicone containing encapsulant composition comprising:
- (a) 30 to 60 weight % of an epoxy resin;
- (b) 30 to 60 weight % of an acid anhydride curing agent;
- (c) 0.1 to 30 weight % of a Carbinol siloxane resin which can form a homogeneous mixture with the said (a) and (b);
- and
- (d) 0.1 to 5 weight % of a reactive UV absorber or a reactive hindered amine light stabilizer (HALS).
A silicone containing encapsulant composition comprising:
- (a) 30 to 60 weight % of an epoxy resin;
- (b) 30 to 60 weight % of an acid anhydride curing agent;
- (c) 0.1 to 30 weight % of a Carbinol siloxane resin which can form a homogeneous mixture with the said (a) and (b);
- (d) 0.01 to 3.0 weight % of a curing accelerator;
- (e) 0.1 to 5 weight % of a reactive UV absorber;
- and
- (f) 0.1 to 5 weight % of a reactive hindered amine light stabilizer (HALS).
An epoxy encapsulant composition comprising:
- (a) 30 to 60 weight % of an epoxy resin;
- (b) 30 to 60 weight % of an acid anhydride curing agent;
- (c) 0.1 to 30 weight % of a Carbinol siloxane resin which can form a homogeneous mixture with the said (a) and (b);
- (d) 0.1 to 5 weight % of a reactive UV absorber or a reactive hindered amine light stabilizer (HALS);
- and
- (e) 0.1 to 5 weight % of a reactive anti-oxidant and/or phosphor containing flame retardant.
A silicone containing encapsulant composition comprising:
- (a) 30 to 60 weight % of an epoxy resin;
- (b) 30 to 60 weight % of an acid anhydride curing agent;
- (c) 0.1 to 30 weight % of a Carbinol siloxane resin which can form a homogeneous mixture with the said (a) and (b);
- (d) 0.1 to 5 weight % of a non-reactive UV absorber;
- and
- (c) 0.1 to 5 weight % of a non-reactive hindered amine light stabilizer (HALS).
Dependencies are inferred from the claim text.