JP2006124422A5 - - Google Patents

Description

According to the present invention, a step of firing a silicate phosphor containing barium, a step of pulverizing the silicate phosphor, suspending the silicate phosphor in a non-aqueous organic solvent, and an ultrasonic beam as described above A method for producing a silicate phosphor comprising a step of irradiating a silicate phosphor and a step of drying the silicate phosphor is provided .

Claims (17)

Firing a silicate phosphor containing barium;
Crushing the silicate phosphor;
Suspending the silicate phosphor in a non-aqueous organic solvent and irradiating the silicate phosphor with an ultrasonic beam;
And a step of drying the silicate phosphor. A method for producing a silicate phosphor. The silicate phosphor is
M ′ _a M ″ _b M ′ ″ _c (Si _1−z M ″ ″ _z ) _d (Al, B, Ga, In) _e (Sb, P, V, Nb, Ta) _f O _{(a + b + c / 2 + 2d + 3e / 2 + 5f / 2-n / 2) Xn} : Eu _x
(Where
M ′ is one or more elements selected from the group consisting of Ca, Sr, Ba, and Zn,
M ″ is one or more elements selected from the group consisting of Mg, Cd, Mn, and Be,
M ′ ″ is an ion of one or more monovalent metals selected from Group 1 of the periodic table;
M ″ ″ is one or more tetravalent elements selected from the group consisting of Ti, Zr, Hf, and Ge;
X is one or more ions selected from the group consisting of F, Cl, Br, I for balancing the charge, and 0.5 ≦ a ≦ 8,
0 ≦ b ≦ 5,
0 ≦ c ≦ 4,
0 ≦ d ≦ 10,
0 ≦ e ≦ 2,
0 ≦ f ≦ 2,
0 ≦ n ≦ 4,
0 ≦ x ≦ 0.5,
0 ≦ z ≦ 1)
Method for producing a silicate-based phosphor according to claim 1, which is represented by the empirical formula. The silicate phosphor is
M ′ _a M ″ _b M ′ ″ _c (Si _1−z M ″ ″ _z ) _d (Al, B, Ga, In) _e (Sb, P, V, Nb, Ta) _f O _{(a + b + c / 2 + 2d + 3e / 2 + 5f / 2-n / 2) Xn} : _Ry
(Where
M ′ is one or more elements selected from the group consisting of Ca, Sr, Ba, and Zn,
M ″ is one or more elements selected from the group consisting of Mg, Cd, Mn, and Be,
M ′ ″ is an ion of one or more monovalent metals selected from Group 1 of the periodic table;
M ″ ″ is one or more tetravalent elements selected from the group consisting of Ti, Zr, Hf, and Ge;
R is one or more elements selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Bi, S, Sn, and Sb. Yes,
X is one or more ions selected from the group consisting of F, Cl, Br, I for balancing the charge, and 0.5 ≦ a ≦ 8,
1 ≦ b ≦ 5,
0 ≦ c ≦ 4,
0 ≦ d ≦ 10,
0 ≦ e ≦ 2,
0 ≦ f ≦ 2,
0 ≦ n ≦ 4,
0 ≦ y ≦ 1,
0 ≦ z ≦ 1)
Method for producing a silicate-based phosphor according to claim 1, which is represented by the empirical formula. The non-aqueous organic solvent is
Water-soluble non-aqueous organic solvents such as alcohols, polyol raw materials, nitriles, aldehydes, ketones, amides, esters,
Or
Alcohols, polyols material, nitriles, aldehydes, ketones, amides, and non-aqueous organic solvent soluble, such as esters, and addition of the complexing agent, any one of claims 1 to 3 which is a mixture of 2. A method for producing a silicate phosphor according to item 1. The silicate phosphor is
After washing with an aqueous mixture and before drying
Water-soluble non-aqueous organic solvents such as alcohols, polyol raw materials, nitriles, aldehydes, ketones, amides, esters, or alcohols, polyol raw materials, nitriles, aldehydes, ketones, amides, The method for producing a silicate phosphor according to any one of claims 1 to 4 , wherein the treatment with a mixture of an organic nonaqueous solvent such as an ester and an additional complexing agent is performed. The method for producing a silicate phosphor according to any one of claims 1 to 5 , wherein the silicate phosphor is dried in an inert gas atmosphere such as nitrogen or argon. The method for producing a silicate phosphor according to any one of claims 1 to 6 , wherein the silicate phosphor can be excited by radiation of 250 to 500 nm. The method for producing a silicate phosphor according to any one of claims 1 to 7 , wherein the silicate phosphor is used alone or in a plurality of light emitting devices. The method for producing a silicate phosphor according to any one of claims 1 to 8 , wherein the silicate phosphor is used as a light emitting layer of an LED. The method for producing a silicate phosphor according to any one of claims 1 to 9 , wherein the silicate phosphor has a particle size of 20 to 30 µm. LED elements that emit ultraviolet or blue irradiation light;
A light-transmitting sealing resin for sealing the LED element,
The said sealing resin is a LED lamp which contains the silicate type | system | group fluorescent substance manufactured by the manufacturing method of Claim 1 , and is excited by the light of the said LED element. The said sealing resin contains the 1st sealing resin which seals the said LED element, and the layered 2nd sealing resin laminated | stacked on said 1st sealing resin and containing the said silicate type | system | group fluorescent substance. 11. The LED lamp according to 11 . The LED lamp according to claim 11 , wherein the silicate phosphor is mixed with the sealing resin for sealing the LED element mounted on a lead frame. The LED lamp according to claim 11 , wherein the silicate phosphor is mixed with the sealing resin that seals the LED element mounted on an inorganic material substrate. LED elements that emit ultraviolet or blue irradiation light;
A support on which the LED element is mounted;
A light-transmitting sealing resin for sealing the LED element,
The said sealing resin is an LED lamp which contains the silicate type | system | group fluorescent substance manufactured by the manufacturing method of Claim 1 or 2, and is excited by the light of the said LED element. The support has a first lead and a second lead for supplying power to the LED element,
The first lead has a recess at one end,
The LED lamp according to claim 15 , wherein the LED element is disposed in the concave portion so as to be sealed with the light-transmitting sealing resin. The support has an insulating substrate having a wiring pattern on the top for supplying electric power to the LED element,
The LED lamp according to claim 15 , wherein the LED element is mounted on the insulating substrate so as to be sealed with the light-transmitting sealing resin.