Composition comprising quantum dot, and device using same

• US 9,206,350 B2
• Filed: 12/01/2012
• Issued: 12/08/2015
• Est. Priority Date: 12/01/2011
• Status: Active Grant

• Current Assignee: LMS Incorporated (Davey Tree Expert Company)
• Original Assignee: LMS Incorporated (Davey Tree Expert Company)
• Inventors: Choi, Myeon Choeon, Choi, Jeong Og, Kwon, Doo Hyo
• Primary Examiner(s): Mulcahy, Peter D
• Application Number:
  US14/361,128
• Publication Number:
  US 20150045499A1
• Time in Patent Office: 1,102 Days
• US Class Current: 1/1
• CPC Class Codes: B82Y 15/00 Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
• CPC Class Codes: C08F 20/10 Esters
• CPC Class Codes: C09K 11/025 non-luminescent particle coatings or suspension media
• CPC Class Codes: H01L 31/035218 the quantum structure being quantum dots
• CPC Class Codes: H10K 50/115 comprising active inorganic nanostructures, e.g. luminescent quantum dots

Abstract

The present invention provides a curable composition comprising an acrylate and a quantum dot, and a device using the same. Since the luminous efficiency and dispersion of a quantum dot are excellent and the curable composition has remarkable UV stability and heat resistance, the curable composition can be effectively applied to various forms of light emitting devices.

Claims

1. A curable composition comprising an acrylate and a quantum dot, wherein the acrylate has a structure represented by the following Chemical Formula 1:

2. The curable composition as claimed in claim 1, wherein the curable composition further comprises the at least one additional acrylate selected from the group consisting of a single-functional acrylate having a single functional group and a multi-functional acrylate having at least two functional groups.

3. The curable composition as claimed in claim 2, wherein the at least one additional acrylate comprises a single-functional acrylate comprising at least one structure represented by the following Chemical Formulas 2, 3 and 4:

4. The curable composition as claimed in claim 2, wherein the at least one additional acrylate comprises a multi-functional acrylate comprising at least one of the structures represented by the following Chemical Formulas 5 to 9:

5. The curable composition as claimed in claim 1, wherein the content of the acrylate having a structure of the Chemical Formula 1 is 5 to 50 parts by weight with respect to 100 parts by weight of the composition.

6. The curable composition as claimed in claim 2, wherein the content of the single-functional acrylate is 5 to 40 parts by weight with respect to 100 parts by weight of the composition.

7. The curable composition as claimed in claim 2, wherein the content of the multi-functional acrylate is 30 to 90 parts by weight with respect to 100 parts by weight of the composition.

8. The curable composition as claimed in claim 1, wherein the quantum dot has an emission peak at either one of a wavelength of 520 to 570 nm and a wavelength of 620 to 670 nm.

9. The curable composition as claimed in claim 1, wherein the quantum dot has an emission peak at a wavelength of 570 to 620 nm.

10. The curable composition as claimed in claim 1, wherein the content of the quantum dot is 0.001 to 10 parts by weight with respect to 100 parts by weight of the composition.

11. The curable composition as claimed in claim 1, further comprising a fluorescent substance.

12. A cured material of the composition as claimed in claim 1.

13. The cured material as claimed in claim 12, wherein the cured material is in the form of a film or a coating.

14. The cured material as claimed in claim 12, wherein the cured material has a quantum dot dispersed in a matrix structure formed from a polymer of acrylate.

15. The cured material as claimed in claim 12, wherein the cured material has a refractive index of 1.3 to 1.8.

16. A device comprising the cured material as claimed in claim 12.

17. The device as claimed in claim 16, wherein the device is a lighting device, a backlight device, or a display device.