Light emitting composition, light source device, and display device
First Claim
Patent Images
1. A light emitting composition prepared using a sol-gel process, the light emitting composition comprising:
- a phosphor in the form of particles; and
a plurality of glass layers, each one of the glass layers substantially coating the surface of a respective one of the phosphor particles and containing at least silicon and oxygen;
wherein each glass layer is formed about the respective phosphor particle and includes openings that define exposed regions of said respective phosphor particle, the exposed regions are made discrete from one another by the glass layer.
2 Assignments
0 Petitions
Accused Products
Abstract
A light emitting composition, light source device, and display device are provided. The light emitting composition has a phosphor, including a glass layer containing at least silicon (Si) and oxygen (O) formed on the surface of the phosphor. Exposed regions of the phosphor are made discrete by the glass layer.
-
Citations
11 Claims
-
1. A light emitting composition prepared using a sol-gel process, the light emitting composition comprising:
- a phosphor in the form of particles; and
a plurality of glass layers, each one of the glass layers substantially coating the surface of a respective one of the phosphor particles and containing at least silicon and oxygen;
wherein each glass layer is formed about the respective phosphor particle and includes openings that define exposed regions of said respective phosphor particle, the exposed regions are made discrete from one another by the glass layer. - View Dependent Claims (2, 3, 4)
- a phosphor in the form of particles; and
-
5. A light source device comprising:
- a first light emitting composition;
a second light emitting composition; and
a blue light source;
wherein at least one of said first light emitting composition and said second light emitting composition is prepared using a sol-gel process and has a phosphor in the form of particles to be excited by blue light emitted from said blue light source; and
wherein the surfaces of each of said phosphor particles are substantially coated with a respective glass layer containing at least silicon and oxygen, each of the glass layers formed about the respective phosphor particles and including openings that define exposed regions of said respective phosphor particles, the exposed regions being made discrete from one another by said glass layer. - View Dependent Claims (6)
- a first light emitting composition;
-
7. A display device comprising:
- a light source device having a first light emitting composition, a second light emitting composition, and a blue light source; and
an optical device for performing predetermined modulation to light emitted from said light source device to thereby output predetermined light;
wherein at least one of said first light emitting composition and said second light emitting composition is prepared using a sol-gel process and has a phosphor in the form of particles to be excited by blue light emitted from said blue light source; and
the surfaces of each of said phosphor particles are substantially coated with a respective glass layer containing at least silicon and oxygen, each glass layer formed about the respective phosphor particles including openings that define exposed regions of said respective phosphor particles, the exposed regions being made discrete from one another by the glass layer. - View Dependent Claims (8)
- a light source device having a first light emitting composition, a second light emitting composition, and a blue light source; and
-
9. A method of producing a light emitting composition including a phosphor in the form of particles, the method comprising:
- dispersing the phosphor in ethanol, tetraethyoxysilane and water to form a mixture;
heating and stirring the mixture for a determined period of time;
filtering the mixture to produce a residue, and drying the residue, wherein each of the phosphor particles in the resulting residue includes a respective glass layer substantially coating the surface of the respective phosphor particle and containing at least silicon and oxygen, and wherein each glass layer formed about the respective phosphor particle includes openings that define exposed regions of the respective phosphor particle, the exposed regions are made discrete from one another by the glass layer. - View Dependent Claims (10, 11)
- dispersing the phosphor in ethanol, tetraethyoxysilane and water to form a mixture;
Specification