Light emitting device with silicone resin layer formed by screen printing
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-035/24
H01L-051/00
출원번호
UP-0399501
(2006-04-07)
등록번호
US-7745818
(2010-07-19)
우선권정보
JP-2005-112804(2005-04-08)
발명자
/ 주소
Sofue, Shinsuke
Tamaki, Hiroto
Izuno, Kunihiro
출원인 / 주소
Nichia Corporation
대리인 / 주소
Westerman, Hattori, Daniels & Adrian, LLP
인용정보
피인용 횟수 :
192인용 특허 :
1
초록▼
A light emitting device, including a light emitting element, and a resin layer that has been screen printed to coat said light emitting element is provided. The resin layer is formed from a curable silicone resin composition, which includes (i) an organopolysiloxane with a polystyrene equivalent wei
A light emitting device, including a light emitting element, and a resin layer that has been screen printed to coat said light emitting element is provided. The resin layer is formed from a curable silicone resin composition, which includes (i) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 5×103, (ii) a condensation catalyst, (iii) a solvent, and (iv) a finely powdered inorganic filler. The uniformity of the film thickness is excellent, thus resulting in little color irregularities during light emission from the light emitting element.
대표청구항▼
What is claimed is: 1. A light emitting device, comprising a light emitting element, and a resin layer that has been screen printed to coat said light emitting element, wherein said resin layer comprises a cured product in a dry state formed by curing a curable silicone resin composition, said cura
What is claimed is: 1. A light emitting device, comprising a light emitting element, and a resin layer that has been screen printed to coat said light emitting element, wherein said resin layer comprises a cured product in a dry state formed by curing a curable silicone resin composition, said curable silicone resin composition comprising: (i) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 5×103, represented by an average composition formula (1) shown below: R1a(OX)bSiO(4−a−b)/2 (1) wherein, each R1 represents, independently, an alkyl group, alkenyl group or aryl group of 1 to 6 carbon atoms, each X represents, independently, a hydrogen atom, or an alkyl group, alkenyl group, alkoxyalkyl group or acyl group of 1 to 6 carbon atoms, a represents a number within a range from 1.05 to 1.5, b represents a number that satisfies 0<b<2, and a value of a+b satisfies 1.05<a+b<2, (ii) a condensation catalyst selected from the group consisting of organometallic compounds containing a zinc, aluminium, titanium, tin, or cobalt atom, (iii) a solvent, and (iv) a finely powdered inorganic filler. 2. The light emitting device according to claim 1, wherein said R1 represents a methyl group. 3. The light emitting device according to claim 1, wherein a proportion of said R1 groups within said organopolysiloxane (i) is no more than 32% by mass. 4. The light emitting device according to claim 1, wherein said condensation catalyst (ii) is an organometallic catalyst. 5. The light emitting device according to claim 1, wherein said resin layer has a thickness within a range from 10 μm to 3 mm, and is colorless and transparent. 6. The light emitting device according to claim 1, wherein said light emitting element is flip-chip mounted to a sub-mount substrate, and said light emitting element and said sub-mount substrate are coated with a screen printed resin layer. 7. The light emitting device according to claim 6, wherein a hollow space is formed between said light emitting element and said sub-mount substrate.
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이 특허에 인용된 특허 (1)
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