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SamsungGranted patentMaterials & manufacturingInterest 4/10

Samsung patents light-curing method for quantum dot materials

This patent describes a two-step process for hardening a liquid mixture into a solid material. The method uses a weak light source first, followed by a much stronger light source to activate quantum dots and reactive chemicals within the composition.

Why it mattersThis technique could help manufacturers create more precise or efficient display layers using quantum dot technology, which is common in high-end screens.

In the filing’s own words

The present invention relates to a process for fabricating cured composition.

What exactly they claim (claim 1)

1. A process for fabricating cured composition comprising at least following steps; a) irradiating a composition with a light as a first light irradiation; and b) irradiating the composition with a light as a second light irradiation; wherein the composition comprises at least one light emitting moiety and a reactive monomer, wherein an intensity of the light of the first light irradiation and an intensity of the light of the second light irradiation satisfies the following formula (I): the intensity of the light of the first light irradiation<the intensity of the light of the second light irradiation (I), wherein the composition further comprises a quantum dot (QD) material, wherein the intensity of the light of the first light irradiation at step (a) is in a range from 0.1 mW/cm 2 to 20 mW/cm 2 and the intensity of the light of the second light irradiation at step (b) is in a range from 200 mW/cm 2 to 5 W/cm 2, and wherein an irradiation time of the first light irradiation at step a) is in a range from 1 second to 500 seconds and an irradiation time of the second light irradiation at step b) is in a range from 1 second to 500 seconds.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Process
Patent number
US12723167B2
Application number
18031237
Filed
Oct 11, 2021
Granted
Sep 1, 2026
Inventors
9
Claims
20

Classified under

C09D 11/38 Chemistry & metalsB41J 2/01 Operations & transportB41J 2/2107 Operations & transportB41J 2/2114 Operations & transportB41M 5/405 Operations & transportC09D 11/033 Chemistry & metals

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.