IP Library › Patent Application 11117675
Patent Application
App. No. 11/117,675

Semiconductor light emitting device and method for manufacturing same

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Quick Facts
Patent No.
US None
App. No.
11/117,675
Abstract

A semiconductor light emitting device ensuring a uniform color tone comprises a semiconductor light emitting element that emits light of a first wavelength upon injection of a current, a fluorescent material portion that contains a fluorescent material excited by light of the first wavelength to emit light of a second wavelength, and a diffuser mixed in an appropriate material around the semiconductor light emitting element.

Claims (21)

1 - 20 . (canceled)

21 . A semiconductor light emitting device comprising:

a semiconductor light emitting element which emits light of a first wavelength when a current is injected thereto;

a binder overlying said semiconductor light emitting element, and containing in mixture a fluorescent material and a diffuser, said fluorescent material being excited by light of the first wavelength to emit light of a second wavelength; and

a sealing resin overlying said binder.

22 . The semiconductor light emitting device according to claim 21 wherein weight % concentration of said diffuser in said binder is in the range from 0.5% to 5.0%.

23 . The semiconductor light emitting device according to claim 21 wherein said diffuser contains at least one of calcium carbonate, silica, SiO 2 and Al 2 O 3 .

24 . A semiconductor light emitting device, comprising:

a semiconductor light emitting element which emits light of a first wavelength when a current is injected thereto;

a binder overlying said semiconductor light emitting element, and containing a fluorescent material, said fluorescent material being excited by light of the first wavelength to emit light of a second wavelength; and

a sealing resin overlaying said binder, said sealing resin containing a diffuser.

25 . The semiconductor light emitting device according to claim 24 wherein weight % concentration of said diffuser in said sealing resin is in the range from 0.5% to 5.0%.

26 . The semiconductor light emitting device according to claim 24 wherein said diffuser contains at least one of calcium carbonate, silica, SiO 2 and Al 2 O 3 .

27 . The semiconductor light emitting device according to claim 25 wherein said sealing resin ins made of silicone resin.

28 . A semiconductor light emitting device comprising:

a semiconductor light emitting element which emits light of a first wavelength when a current is injected thereto;

a binder overlying said semiconductor light emitting element, and containing a diffuser; and

a sealing resin overlaying said binder, said sealing resin containing a fluorescent material being excited by light of the first wavelength to emit light of a second wavelength.

29 . The semiconductor light emitting device according to claim 28 wherein weight % concentration of said diffuser in said binder is in the range from 0.5% to 5.0%.

30 . The semiconductor light emitting device according to claim 28 wherein said diffuser contains at least one of calcium carbonate, silica, SiO 2 and Al 2 O 3 .

31 . The semiconductor light emitting device according to claim 28 wherein said sealing resin is made of silicone resin.