Stress-resistant component for use with quantum dots

• US 9,864,121 B2
• Filed: 11/20/2012
• Issued: 01/09/2018
• Est. Priority Date: 11/22/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Nick, Robert J., Sadasivan, Sridhar, Linton, John R.
• Primary Examiner(s): Gramling, Sean
• Assistant Examiner(s): Sufleta, II, Gerald J
• Application Number:
  US13/682,563
• Publication Number:
  US 20130148376A1
• Time in Patent Office: 1,876 Days
• Field of Search: 362600-634
• CPC Class Codes: G02B 6/0001 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 Class Codes: G02B 6/0023 provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
• CPC Class Codes: Y10T 428/131 Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]

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.

Claims

1. A glass tube for use with quantum dot formulations comprising

the glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section 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 with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube.

2. An optical component comprising

a glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section including a first full semicircle end and an opposite second full semicircle end and a pair of straight substantially parallel walls connecting the first full semicircle end and the second full semicircle end with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube;

and

a matrix including quantum dots contained within the glass tube.

5. An optical component in accordance with claim 2 wherein the glass tube containing the matrix is hermetically sealed with a glass seal.

6. An optical component in accordance with claim 2 wherein the glass tube has a racetrack shaped cross-sectional configuration wherein the glass tube is stress-tolerant to stresses on the tube due to polymerization and curing of a polymerizable quantum dot formulation within the tube.

3. A combination comprising

a glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section 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 with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube;

a matrix including quantum dots contained within the glass tube;

one or more light sources adjacent to the glass tube; and

a light guide adjacent to the glass tube.

4. A back light display unit comprising

one or more light sources;

a glass tube adjacent the one or more light sources with the glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section 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 with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube;

a matrix including quantum dots contained within the glass tube; and

a light guide interconnecting a substantially parallel wall of the glass tube and a display unit.