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US 10,852,584 B2Granted
Method for quantum dot-polymer composite, quantum dot-polymer composite, light conversion film comprising same, backlight unit, and display device
AssigneeLG Electronics Inc.
InventorsByoungkwon Cho, Jinmok Oh, Dongseon Jang, Juchul Lee
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Abstract
The embodiment relates to a quantum dot-polymer composite and a method for producing the same, wherein the quantum dot-polymer composite includes: a first phase made of a matrix resin; a second phase dispersed and distributed in the first phase, comprising a quantum dot, and having a spherical shape; and a micro scattering agent distributed in an interface between the first phase and the second phase along a surface of the second phase.
Claims21
A quantum dot-polymer composite comprising:
- a first phase made of a matrix resin and comprising a plurality of first scattering agents;
- and
- a plurality of second phases dispersed and distributed in the first phase, each of the second phases comprising a plurality of quantum dots and a plurality of second scattering agents therein and having an outer surface that has a spherical shape,
- wherein the plurality of first scattering agents are dispersed in the first phase and some of the plurality of first scattering agents are attached to the outer surface of each of the second phases along the outer surface of each of the second phases,
- wherein the plurality of first scattering agents dispersed in the first phase have a polarity and an average particle size greater than an average particle size of the plurality of second scattering agents dispersed in each of the second phases, and
- wherein the plurality of first scattering agents are only present in the first phase, and the plurality of second scattering agents are only present in each of the second phases.
3 more elements
A light conversion film comprising:
- a light conversion layer comprising a quantum dot-polymer composite including a first phase made of a matrix resin, the first phase including a plurality of first scattering agents, and a plurality of second phases dispersed and distributed in the first phase, each of the second phases including a plurality of quantum dots and a plurality of second scattering agents therein and having an outer surface that has a spherical shape, and
- a barrier film disposed on at least one surface of the light conversion layer,
- wherein the plurality of first scattering agents are dispersed in the first phase and some of the plurality of first scattering agents are attached to the outer surface of each of the second phases along the outer surface of each of the second phases,
- wherein the plurality of first scattering agents dispersed in the first phase have a polarity and an average particle size greater than an average particle size of the plurality of second scattering agents dispersed in each of the second phases, and
- wherein the plurality of first scattering agents are only present in the first phase, and the plurality of second scattering agents are only present in each of the second phases.
2 more elements
A backlight unit comprising:
- a light source unit including at least a light source;
- and
- a light conversion film,
- wherein the light conversion film comprises:
- a light conversion layer including a quantum dot-polymer composite including a first phase made of a matrix resin, the first phase including a plurality of first scattering agents, and a plurality of second phases dispersed and distributed in the first phase, each of the second phases including a plurality of quantum dots and a plurality of second scattering agents therein and having an outer surface that has a spherical shape;
- and
- a barrier film disposed on at least one surface of the light conversion layer,
- wherein the plurality of first scattering agents are dispersed in the first phase and some of the plurality of first scattering agents are attached to the outer surface of each of the second phases along the outer surface of each of the second phases,
- wherein the plurality of first scattering agents dispersed in the first phase have a polarity and an average particle size greater than an average particle size of the plurality of second scattering agents dispersed in each of the second phases, and
- wherein the plurality of first scattering agents are only present in the first phase, and the plurality of second scattering agents are only present in each of the second phases.
7 more elements
A display device comprising:
- a backlight unit comprising a light source unit and a light conversion film;
- and
- a display panel disposed on the backlight unit,
- wherein the light conversion film comprises:
- a light conversion layer including a quantum dot-polymer composite including a first phase made of a matrix resin, the first phase comprising a plurality of first scattering agents, and, a plurality of second phases dispersed and distributed in the first phase, each of the second phases including a plurality of quantum dots and a plurality of second scattering agents therein and having an outer surface that has a spherical shape;
- and
- a barrier film disposed on at least one surface of the light conversion layer,
- wherein the plurality of first scattering agents are dispersed in the first phase and some of the plurality of first scattering agents are attached to the outer surface of each of the second phases along the outer surface of each of the second phases,
- wherein the plurality of first scattering agents dispersed in the first phase have a polarity and an average particle size greater than an average particle size of the plurality of second scattering agents dispersed in each of the second phases, and
- wherein the plurality of first scattering agents are only present in the first phase, and the plurality of second scattering agents are only present in each of the second phases.
7 more elements
Dependencies are inferred from the claim text.