Light emitting apparatus and method of manufacturing the same
First Claim
1. A method of manufacturing a light emitting apparatus comprising a light emitting device disposed on a supporting body;
- a fluorescent substance that absorbs at least a portion of light emitted from said light emitting device and emits light of a different wavelength; and
a coating layer that includes said fluorescent substance and covers at least the surface of said light emitting device, the method comprising;
a first step of preparing a coating solution that contains an organometallic compound including at least one element selected from the group consisting of Si, Al, Ga, Ti, Ge, P, B, Zr, Y, Sn, Pb and alkali earth metals;
an organic solvent; and
a fluorescent substance;
a second step of applying said coating solution to said light emitting device; and
a third step of drying said coating solution so as to fix said fluorescent substance.
1 Assignment
0 Petitions
Accused Products
Abstract
A light emitting apparatus comprising a light emitting device (101) disposed on a supporting body (105), and coating layers ((108, 109) that bind a fluorescent substance that absorbs light emitted by the light emitting device (101) and emits light of a different wavelength and secures the fluorescent substance onto the surface of the light emitting device (101). The coating layers (108, 109) are made of an inorganic material including an oxide and a hydroxide, each containing at least one element selected from the group consisting of Si, Al, Ga, Ti, Ge, P, B, Zr, Y, Sn, Pb and alkali earth metals. Also an adhesive layer (110) is made of the same inorganic material as that of the coating layers (108, 109).
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Citations
16 Claims
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1. A method of manufacturing a light emitting apparatus comprising a light emitting device disposed on a supporting body;
- a fluorescent substance that absorbs at least a portion of light emitted from said light emitting device and emits light of a different wavelength; and
a coating layer that includes said fluorescent substance and covers at least the surface of said light emitting device, the method comprising;a first step of preparing a coating solution that contains an organometallic compound including at least one element selected from the group consisting of Si, Al, Ga, Ti, Ge, P, B, Zr, Y, Sn, Pb and alkali earth metals;
an organic solvent; and
a fluorescent substance;a second step of applying said coating solution to said light emitting device; and a third step of drying said coating solution so as to fix said fluorescent substance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16)
- a fluorescent substance that absorbs at least a portion of light emitted from said light emitting device and emits light of a different wavelength; and
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8. A method of manufacturing a light emitting apparatus having a supporting substrate;
- a light emitting device consisting of gallium nitride-based compound semiconductor layers formed on a substrate, said light emitting device being disposed so that the substrate-side surface of said light emitting device opposes the top surface of said supporting body via an adhesive layer, the method comprising;
a first step of preparing an adhesive solution that contains an organometallic compound containing at least one element selected from the group consisting of Si, Al, Ga, Ti, Ge, P, B, Zr, Y, Sn, Pb and alkali earth metals, and an organic solvent, so as to obtain a hydrolyzed solution having viscosity in a range from 2.5 to 500 cps at 25°
C. and acid concentration in a range from 20 to 500 ppm;a second step of applying the adhesive solution to the top surface of said supporting body and placing said light emitting device on the adhesive solution; and a third step of drying the adhesive solution at a temperature in a range from 50°
C. to 300°
C. so as to bond the top surface of said supporting body and the substrate-side surface of said light emitting device. - View Dependent Claims (9, 10, 11)
- a light emitting device consisting of gallium nitride-based compound semiconductor layers formed on a substrate, said light emitting device being disposed so that the substrate-side surface of said light emitting device opposes the top surface of said supporting body via an adhesive layer, the method comprising;
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12. A method of manufacturing a light emitting apparatus having a light emitting device disposed on a supporting body;
- a fluorescent substance that absorbs at least a portion of light emitted by said light emitting device and emits light of a different wavelength; and
a coating layer that includes the fluorescent substance and covers from the surface of said supporting body to the entire surface of said light emitting device,wherein a coating solution containing said fluorescent substance is sprayed in the form of mist of rotating spiral stream onto said light emitting device from above. - View Dependent Claims (13, 14)
- a fluorescent substance that absorbs at least a portion of light emitted by said light emitting device and emits light of a different wavelength; and
Specification