Composition for near-infrared light-absorbing films, near-infrared light-absorbing layers, camera modules, and electronic devices

Patent metadata

Field	Value
Publication number	US-11300718-B2
Application number	US-201816023023-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Sep 8, 2017
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A composition for a near-infrared light-absorbing film includes a binder, a compound represented by Chemical Formula 1, and a compound represented by Chemical Formula 2, wherein a total amount of the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 ranges from about 2.0 parts by weight to about 2.6 parts by weight based on 100 parts by weight of the binder. A near-infrared light-absorbing film may include a near-infrared light-absorbing layer including a cured product of the composition. A camera device may include the near-infrared light-absorbing film, and an electronic device may include the camera device.

First claim

What is claimed is:

1. A composition, comprising:
a binder, a compound represented by Chemical Formula 1, and a compound represented by Chemical Formula 2,
wherein a total amount of the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 ranges from about 2.0 parts by weight to about 2.6 parts by weight based on 100 parts by weight of the binder:

wherein, in Chemical Formula 1 and Chemical Formula 2,
R 1 to R 20 are independently one substance of a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, and a substituted or unsubstituted C6 to C20 aryl group, and
n=3,
wherein the compound represented by Chemical Formula 1 is included in an amount of about 1.3 parts by weight to about 1.9 parts by weight based on 100 parts by weight of the binder, and
wherein the compound represented by Chemical Formula 2 is included in an amount of about 0.1 parts by weight to about 0.7 parts by weight based on 100 parts by weight of the binder.

2. The composition of claim 1 , wherein the composition further includes a cyanine-based dye, a phthalocyanine-based dye, a dithiolene metal complex dye, or a diimmonium-based dye that have different structures from Chemical Formula 1.

3. The composition of claim 1 , wherein the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 have independently an absorbance at a maximum absorption wavelength (λ max ) that is at least about 20 times as great as an absorbance at a wavelength of about 550 nm.

4. The composition of claim 1 , wherein a wavelength spectrum of light at which an average light transmittance of the composition is 50% ranges from about 625 nm to about 645 nm.

5. The composition of claim 1 , wherein the composition has an average light transmittance of less than or equal to about 3% in a wavelength spectrum of light of about 700 nm to about 740 nm.

6. The composition of claim 1 , wherein the composition has an average light transmittance of greater than or equal to about 85% in a wavelength spectrum of light of about 430 nm to about 565 nm.

7. The composition of claim 1 , wherein the binder includes at least one binder of an acrylic binder and an epoxy binder.

8. A film comprising:
a layer including a cured product of the composition of claim 1 .

9. The film of claim 8 , further comprising:
a polymer film on one surface of the layer.

10. The film of claim 9 , wherein the polymer film includes at least one material of polyethylene terephthalate, polyethylene naphthalate, triacetyl cellulose, polycarbonate, a cycloolefin polymer, poly(meth)acrylate, and polyimide.

11. The film of claim 9 , wherein the polymer film is configured to selectively absorb light in a wavelength spectrum of light that is at least a portion of an ultraviolet (UV) wavelength spectrum of light.

12. The film of claim 9 , wherein the layer is configured to absorb near-infrared light, and the film further comprises:
an additional near-infrared light-absorbing layer on at least one surface of
a surface of the polymer film, and
a surface of the layer.

13. The film of claim 12 , wherein the additional near-infrared light-absorbing layer includes a copper phosphate salt.

14. The film of claim 8 , which has a thickness of about 25 μm to about 160 μm.

15. A camera device comprising the film of claim 8 .

16. The camera device of claim 15 , further comprising:
a lens; and
an image sensor.

17. An electronic device comprising the camera device of claim 15 .

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Yong Joo
• Won Jong Hoon
• Kim Changki
• Kim Hyung Jun
• Jung Myungsup

Classifications

• C08K5/3417 Primary

  condensed with carbocyclic rings · CPC title

• C09B67/0097

  Dye preparations of special physical nature; Tablets, films, extrusion, microcapsules, sheets, pads, bags with dyes · CPC title

• C09B67/0034

  Mixtures of two or more pigments or dyes of the same type · CPC title

• C08K5/0041

  Optical brightening agents, organic pigments · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title