Glass item, glass item having luminescent-substance particles, device for producing a glass item, method for producing a glass item, and method for producing a glass item having luminescent-substance particles

Patent metadata

Field	Value
Publication number	US-9941487-B2
Application number	US-201515118913-A
Country	US
Kind code	B2
Filing date	Feb 12, 2015
Priority date	Feb 21, 2014
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

In various embodiments, glassware is provided. The glassware may include a glass matrix having a surface, a first type of particles, and at least one second type of particles, wherein the particles of the second type have a higher refractive index than the particles of the first type, wherein the particles of the first type are completely surrounded by the glass matrix, such that the surface of the glass matrix is free of particles of the first type, and the particles of the second type are arranged above and/or between the particles of the first type at least partly in the glass matrix at the surface of the glass matrix in order to increase the refractive index of the glassware.

First claim

The invention claimed is:

1. Glassware, comprising:
a glass matrix having a surface,
a first type of particles, and
at least one second type of particles, wherein the particles of the second type have a higher refractive index than the particles of the first type;
wherein the particles of the first type are completely surrounded by the glass matrix, such that the surface of the glass matrix is free of particles of the first type, and
the particles of the second type are arranged above and/or between the particles of the first type, at least partly in the glass matrix, and at the surface of the glass matrix in order to increase the refractive index of the glassware and the particles of the second type have a smaller mean particle size than the particles of the first type.

2. The glassware as claimed in claim 1 ,
wherein the glassware is formed such that it is at least translucent in the visible wavelength range of an electromagnetic radiation.

3. The glassware as claimed in claim 2 ,
wherein the glassware is formed such that it is transparent in the visible wavelength range of an electromagnetic radiation.

4. The glassware as claimed in claim 1 ,
wherein the glassware is formed as:
a flat glass;
a hollow glass; or
as a glass fiber.

5. The glassware as claimed in claim 1 ,
wherein the glass is a silicate glass.

6. The glassware as claimed in claim 1 ,
wherein the first type of particles has a refractive index in a range of approximately 1.5 to approximately 4.0, and
wherein the first type of particles has a mean diameter in a range of approximately 100 nm to approximately 50 μm, and
wherein the second type of particles has a mean diameter in a range of approximately 10 nm to approximately 1 μm.

7. The glassware as claimed in claim 1 ,
wherein the first type of particles and/or the second type of particles have/has one or more of the following optically functional properties with regard to the glass matrix and an electromagnetic radiation or are/is formed in this way:
non-scattering high-index particles,
scattering particles,
radiation-absorbing,
radiation-absorbing in the visible wavelength range of the electromagnetic radiation, and/or
wavelength-converting.

8. The glassware as claimed in claim 1 ,
wherein the glass matrix has a second surface situated opposite the first surface at a distance, wherein at the second surface:
particles of the first type are exposed and the second surface is free of particles of the second type; or
the second surface is free of particles of the first type and of the second type; or
the second surface is free of particles of the first type and particles of the second type are exposed at the second surface.

9. The glassware as claimed in claim 1 ,
wherein the ratio of the mean diameter of the particles of the second type to the mean diameter of the particles of the first type is in a range of 2·10 −4 to 0.1.

10. A method for producing glassware the glassware comprising:
a glass matrix having a surface,
a first type of particles, and
at least one second type of particles, wherein the particles of the second type have a higher refractive index than the particles of the first type;
wherein the particles of the first type are completely surrounded by the glass matrix, such that the surface of the glass matrix is free of particles of the first type, and
the particles of the second type are arranged above and/or between the particles of the first type at least partly in the glass matrix at the surface of the glass matrix in order to increase the refractive index of the glassware,
the method comprising:
providing a molten glass matrix having a surface,
distributing particles of a first type in the molten glass matrix through the surface in such a way that the particles of the first type are completely surrounded by the molten glass matrix, such that the surface of the glass matrix is free of particles of the first type;
distributing particles of a second type into the glass melt through the surface in such a way that the particles of the second type are arranged above and/or between the particles of the first type, at least partly in the glass matrix and at the surface of the glass matrix, and the particles of the second type have a smaller mean diameter than the particles of the first type.

11. An optoelectronic component comprising glassware, the glassware comprising:
a glass matrix having a surface,
a first type of particles, and
at least one second type of particles, wherein the particles of the second type have a higher refractive index than the particles of the first type, and the particles of the second type have a smaller mean particle size than the particles of the first type;
wherein the particles of the first type are completely surrounded by the glass matrix, such that the surface of the glass matrix is free of particles of the first type, and
the particles of the second type are arranged above and/or between the particles of the first type, at least partly in the glass matrix, and at the surface of the glass matrix in order to increase the refractive index of the glassware,
the optoelectronic component comprising:
an optically active region for converting an electric current into an electromagnetic radiation and/or converting an electromagnetic radiation into an electric current;
wherein the glassware is formed as a covering body of the optically active region and is arranged in the beam path of the electromagnetic radiation.

12. The optoelectronic component as claimed in claim 11 ,
wherein the optoelectronic component is formed as a light emitting diode, a solar cell, a fluorescent tube, an incandescent lamp, a luminous tube or a halogen lamp, an organic optoelectronic component, an organic photodetector, an organic solar cell and/or an organic light emitting diode.

13. The optoelectronic component as claimed in claim 11 ,
wherein the optically active region comprises a first electrode, a second electrode and an organic functional layer structure between the first electrode and the second electrode, wherein the organic functional layer structure is formed for converting the electromagnetic radiation and/or the electric current.

14. A method for producing an optoelectronic component, the optoelectronic component comprising glassware,
the glassware comprising:
a glass matrix having a surface,
a first type of particles, and
at least one second type of particles, wherein the particles of the second type have a higher refractive index than the particles of the first type;
wherein the particles of the first type are completely surrounded by the glass matrix, such that the surface of the glass matrix is free of particles of the first type, and
the particles of the second type are arranged above and/or between the particles of the first type, at least partly in the glass matrix, and at the surface of the glass matrix in order to increase the refractive index of the glassware and
the particles of the second type have a smaller mean diameter than the particles of the first type,
the optoelectronic component comprising:
an optically active region for converting an electric current into an electromagnetic radiation and/or converting an electromagnetic radiation into an electric current;
wherein the glassware is formed as a covering body of the optically active region and is arranged in the beam path of the electromagnetic radiation,
the method comprising:
forming an optically active region on or above the glassware and/or applying the glassware on, above and/or around the optically active region;
wherein the glassware is

Assignees

• Osram Oled Gmbh

Inventors

• Wehlus Thomas

Classifications

• C03C13/04

  Fibre optics, e.g. core and clad fibre compositions (light guides G02B6/00) · CPC title

• C09K11/025

  non-luminescent particle coatings or suspension media · CPC title

• C03C14/006

  the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material · CPC title

• C03B5/173

  Apparatus for changing the composition of the molten glass in glass furnaces, e.g. for colouring the molten glass (chemical aspects C03C) · CPC title

• C03C2214/16

  Microcrystallites, e.g. of optically or electrically active material · CPC title