Stress-resistant component for use with quantum dots

Patent metadata

Field	Value
Publication number	US-10012778-B2
Application number	US-201815862085-A
Country	US
Kind code	B2
Filing date	Jan 4, 2018
Priority date	Nov 22, 2011
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A glass tube including quantum dots in a polymerized matrix is described. An optical component and other products including such glass tube, a composition including quantum dots, and methods are also disclosed.

First claim

The invention claimed is:

1. A method for making an optical component comprising
preparing a glass tube defined by a light transmissive wall including a first full semicircle end and an opposite second full semicircle end and a pair of substantially parallel walls connecting the first full semicircle end and the second full semicircle end defining a uniform path length, wherein the full semicircle ends have an average thickness along a length of the tube which is smaller than an average thickness of the straight substantially parallel walls along the length of the tube;
introducing a polymerizable formulation including quantum dots into the glass tube, and
polymerizing the polymerizable formulation to form a matrix including quantum dots.

2. The method of claim 1 , wherein the polymerizing step comprises subjecting the polymerizable formulation to Ultra Violet light.

3. The method of claim 2 , wherein the polymerizable formulation resists yellowing, browning, or discoloration when subjected to light.

4. The method of claim 1 further comprising a step of sealing at least one open end of the glass tube.

5. The method of claim 4 , wherein the glass tube is hermetically sealed.

6. The method of claim 4 , wherein the glass tube is pseudo-hermetically sealed.

7. The method of claim 4 , wherein the sealing step comprises sealing the at least one open end using glass or epoxy.

8. The method of claim 4 , wherein the sealing step comprises
contacting the at least one open end with an epoxy; and
drawing the epoxy into the at least one open end due to shrinkage action of a curing resin.

9. The method of claim 4 , wherein the sealing step comprises
covering the at least one open end with a glass adhering material; and
melting the at least one open end by heating the glass above the melting point of the glass and pinching the walls together to close the at least one open end to form a molten glass hermetic seal.

10. The method of claim 1 further comprising a step of exposing the glass tube including the quantum dots to light flux for a period of time sufficient to increase a photoluminescent efficiency of the optical component.

11. The method of claim 1 further comprising a step of exposing the glass tube including the quantum dots to light and heat for a period of time until a photoluminescent efficiency of the optical component reaches a substantially constant value.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Nick Robert J
• Sadasivan Sridhar
• Linton John R

Classifications

• G02B6/0001 Primary

  specially adapted for lighting devices or systems (lighting or signalling on vehicles using light guides B60Q1/00; lighting devices for vehicle dashboards B60Q3/10; lighting devices for vehicle interior using light guides B60Q3/62; lighting devices mounted on the vehicle rear part using light guides F21S43/235; measuring arrangements having light conducting pointers G01D13/265; illumination of liquid crystal displays G02F1/1336; illuminated signs G09F13/00) · CPC title

• Y10T428/131

  Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.] · CPC title

• G02B6/0023 Primary

  provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source · CPC title