摘要:
Provided is an encapsulant for optical semiconductor devices, which is capable of enhancing the adhesion between a housing and the encapsulant when an optical semiconductor device is encapsulated in the housing, and which is also capable of enhancing the bonding reliability with respect to humidity. The encapsulant for optical semiconductor devices includes: a first organopolysiloxane having an alkenyl group bonded to a silicon atom and an aryl group bonded to a silicon atom, but not having a hydrogen atom bonded to a silicon atom; a second organopolysiloxane having a hydrogen atom bonded to a silicon atom and an aryl group bonded to a silicon atom; a catalyst for hydrosilylation reaction; and an organic compound having a titanium atom.
摘要:
A thermosetting composition for an optical semiconductor containing a silicone resin having a cyclic ether-containing groups and a thermosetting agent capable of reacting with said cyclic ether-containing group, wherein the silicone resin has, as the principal components, a structural unit expressed by the following formula (1) and a structural unit expressed by the following formula (2). The content of the structural unit expressed by the formula (1) is 0.6 to 0.95 (on a molar basis) and the content of the structural unit expressed by the formula (2) is 0.05 to 0.4 (on a molar basis) when total number of the structural units contained is taken as 1, and the content of the cyclic ether-containing group is 5 to 40 mol %:[formula 1] (R1R2SiO2/2) (1) and [formula 2] (R3SiO3/2) (2) at least one of R1, R2 and R3 represents a cyclic ether-containing group, R1, R2 and R3 other than the cyclic ether-containing group represent hydrocarbon having 1 to 8 carbon atoms or fluoride thereof.
摘要:
It is the object of the invention to provide a curable resin composition which causes no liquid crystal contamination, which are excellent in the adhesive property to a glass, and which causes no cell gap inequality in the case it is used as a sealant for a liquid crystal display element to produce a liquid crystal display element by a one drop fill process, a sealant for a liquid crystal display element, and a liquid crystal display element. The invention is a curable resin composition, which contains a curable resin to be cured by light and/or heat and a polymerization initiator, the curable resin being a crystalline (meth)acrylic acid-modified epoxy resin comprising a (meth)acrylic group and an epoxy group in one molecule.
摘要:
The present invention provides an encapsulant for optical semiconductor devices, which is capable of suppressing surface tackiness of a cured product and is also capable of enhancing the heat resistance and thermal cycle characteristics of the cured product. An encapsulant for optical semiconductor devices according to the present invention which includes: a first organopolysiloxane which is represented by formula (1A) or formula (1B) and has an alkenyl group and a methyl group bonded to a silicon atom; a second organopolysiloxane which is represented by formula (51A) or formula (51B) and has a hydrogen atom bonded to a silicon atom and a methyl group bonded to a silicon atom; and a catalyst for hydrosilylation reaction, and the content ratios of methyl groups bonded to silicon atoms in the first and second organopolysiloxanes each are 80 mol % or more. (R1R2R3SiO1/2)a(R4R5SiO2/2)b(R6SiO3/2)c Formula (1A) (R1R2R3SiO1/2)a(R4R5SiO1/2)b(R6SiO3/2)c Formula (1B) (R51R52R53SiO1/2)p(R54R55SiO2/2)q(R56SiO3/2)r Formula (51A) (R51R52R53SiO1/2)p(R54R55SiO2/2)q(R56SiO3/2)r Formula (51B)
摘要:
It is the object of the invention to provide a curable resin composition which causes no liquid crystal contamination, which are excellent in the adhesive property to a glass, and which causes no cell gap inequality in the case it is used as a sealant for a liquid crystal display element to produce a liquid crystal display element by a one drop fill process, a sealant for a liquid crystal display element, and a liquid crystal display element.The invention is a curable resin composition, which contains a curable resin to be cured by light and/or heat and a polymerization initiator, the curable resin being a crystalline (meth)acrylic acid-modified epoxy resin comprising a (meth)acrylic group and an epoxy group in one molecule.
摘要:
It is an object of the present invention to provide a sealant for a One prop Fill process which hardly causes a peeling phenomenon between the sealant and a substrate in production of liquid crystal display device since the sealant has excellent adhesion to the substrate, and which is most suitable for producing a liquid crystal display device having low color irregularity in liquid crystal display since the sealant does not cause liquid crystal contamination, and relates to a sealant for a One prop Fill process, in which in production of liquid crystal display device by a One prop Fill process, even a portion where light may be not directly irradiated can be adequately cured, a liquid crystal is not deteriorated by ultraviolet light to be irradiated in curing the sealant, and high display quality and high reliability of the liquid crystal display device can be realized, a vertically conducting material, and a liquid crystal display device obtained by using these.The present invention is directed to a sealant for a One prop Fill process, which contains a (meth)acrylate compound having a structure represented by the following general formula (1), 10 to 70% by weight of a curable resin component contained in the sealant being the (meth)acrylate compound. In the general formula (1), R1 represents a hydrogen atom or a methyl group, X represents one species selected from the group expressed by the following chemical formula (2), Y represents one species selected from the group expressed by the following chemical formula (3), A represents a ring opening structure of cyclic lactone, and n has a value of zero or one.
摘要:
It is the object of the invention to provide a curable resin composition which causes no liquid crystal contamination, which are excellent in the adhesive property to a glass, and which causes no cell gap inequality in the case it is used as a sealant for a liquid crystal display element to produce a liquid crystal display element by a one drop fill process, a sealant for a liquid crystal display element, and a liquid crystal display element.The invention is a curable resin composition, which contains a curable resin to be cured by light and/or heat and a polymerization initiator, the curable resin being a crystalline (meth)acrylic acid-modified epoxy resin comprising a (meth)acrylic group and an epoxy group in one molecule.
摘要:
The present invention provides a sealant for an optical semiconductor device which is less likely to reduce its luminance and is also less likely to change its color even used in an energized state in harsh environments of high temperature and high humidity.The sealant for an optical semiconductor device includes: a first organopolysiloxane not containing a hydrogen atom bound to a silicon atom, but containing an alkenyl group bound to a silicon atom and an aryl group bound to a silicon atom, a second organopolysiloxane containing a hydrogen atom bound to a silicon atom and an aryl group bound to a silicon atom, and a platinum-alkenyl complex. The platinum-alkenyl complex is a reaction product obtained by reacting chloroplatinic acid hexahydrate with not less than 6 equivalent of a bi- or more-functional alkenyl compound. The ratio of the number of the alkenyl group bound to a silicon atom in the organopolysiloxane to the number of the hydrogen atom bound to a silicon atom in the organopolysiloxane in the sealant is not less than 1.0 and not more than 2.5.
摘要:
The present invention aims to provide a surface-treated phosphor having high dispersibility and capable of significantly enhancing moisture resistance without deteriorating the fluorescence properties, and a method for producing the surface-treated phosphor. The surface-treated phosphor includes: a phosphor body; and a surface treatment layer containing at least one specific element selected from elements of the third to sixth groups of the periodic table, and fluorine, the phosphor body having the surface treatment layer on the surface thereof, wherein, when a cross section of the surface treatment layer is subjected to a thickness-wise elemental distribution analysis by a combination of an electron microscopic analysis and an energy-dispersive X-ray element analysis, a peak indicating the maximum content of the specific element appears nearer to the surface than a peak indicating the maximum fluorine content.
摘要:
The present invention provides a sealant for an optical semiconductor device which has high gas barrier property against corrosive gas, and is less likely to crack or is less likely to peel off even when used in harsh environments.The sealant for an optical semiconductor device includes: a first silicone resin component including at least one of a first silicone resin A represented by formula (1A) shown below and a first silicone resin B represented by formula (1B) shown below, the first silicone resin A not containing a hydrogen atom bound to a silicon atom, but containing an aryl group and an alkenyl group, the first silicone resin B not containing a hydrogen atom bound to a silicon atom, but containing an aryl group and an alkenyl group; a second silicone resin component including at least one of a second silicone resin A represented by formula (51A) shown below and a second silicone resin B represented by formula (51B) shown below, the second silicone resin A containing an aryl group and a hydrogen atom directly bound to a silicon atom, the second silicone resin B containing an aryl group and a hydrogen atom directly bound to a silicon atom; and a catalyst for hydrosilylation reaction.