Color control member and display device including the same

Patent metadata

Field	Value
Publication number	US-12578518-B2
Application number	US-202318343873-A
Country	US
Kind code	B2
Filing date	Jun 29, 2023
Priority date	Sep 23, 2022
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

A color control member includes a light control layer including quantum dots, a color filter layer disposed on the light control layer, and a low refractive layer disposed between the color filter layer and the light control layer. The low refractive layer includes a base resin, a plurality of non-hollow inorganic particles dispersed in the base resin and of which inner portions are filled. A weight percent of the base resin is in a range of about 40 wt % to about 45 wt % with respect to a total weight of the low refractive layer, and a weight percent of the non-hollow inorganic particles is in a range of about 40 wt % to about 45 wt % with respect to the total weight of the low refractive layer. The color control member including the low refractive layer has excellent reliability.

First claim

What is claimed is:

1 . A color control member comprising:
a light control layer including quantum dots; a color filter layer disposed on the light control layer; and a low refractive layer disposed between the color filter layer and the light control layer, wherein the low refractive layer includes:
a base resin,
a plurality of non-hollow inorganic particles dispersed in the base resin, wherein inner portions of the plurality of non-hollow inorganic particles are filled, and
a void part formed from porogen,
a weight percent of the base resin is in a range of about 40 wt % to about 45 wt % with respect to a total weight of the low refractive layer, and a weight percent of the plurality of non-hollow inorganic particles is in a range of about 40 wt % to about 45 wt % with respect to the total weight of the low refractive layer.

2 . The color control member of claim 1 , wherein the low refractive layer does not comprise hollow inorganic particles of which inner portions are empty.

3 . The color control member of claim 1 , wherein the void part has a spherical shape.

4 . The color control member of claim 1 , wherein each of the plurality of non-hollow inorganic particles has a diameter in a range of about 10 nm to about 30 nm.

5 . The color control member of claim 1 , wherein the porogen has a weight percent in a range of about 10 wt % to about 20 wt % with respect to the total weight of the low refractive layer; and wherein the porogen is thermally decomposed to form the void part.

6 . The color control member of claim 1 , wherein the low refractive layer has a refractive index in a range of about 1.21 to about 1.25.

7 . The color control member of claim 1 , wherein the low refractive layer has a haze value in a range of less than about 0.40%.

8 . The color control member of claim 1 , wherein the base resin comprises at least one of an acrylic resin, a silicone-based resin, an epoxy-based resin, a urethane-based resin, or an imide-based resin.

9 . The color control member of claim 1 , wherein the plurality of non-hollow inorganic particles comprise at least one of SiO 2 , MgF 2 , or Fe 3 O 4 .

10 . The color control member of claim 1 , wherein the plurality of non-hollow inorganic particles have a refractive index in a range of about 1.43 to about 1.46.

11 . The color control member of claim 1 , wherein a functional group of the base resin is coupled to a surface of the plurality of non-hollow inorganic particles.

12 . The color control member of claim 1 , wherein a refractive index of the low refractive layer is smaller than a refractive index of the light control layer.

13 . A display device comprising:
a display element layer, and a color control member disposed on the display element layer, wherein the color control member includes:
a light control layer including quantum dots;
a color filter layer disposed on the light control layer; and
a low refractive layer disposed between the color filter layer and the light control layer,
the low refractive layer includes:
a base resin,
a plurality of non-hollow inorganic particles dispersed in the base resin, wherein inner portions of the plurality of non-hollow inorganic particles are filled, and
a void part formed from porogen,
a weight percent of the base resin is in a range of about 40 wt % to about 45 wt % with respect to a total weight of the low refractive layer, and a weight percent of the plurality of non-hollow inorganic particles is in a range of about 40 wt % to about 45 wt % with respect to the total weight of the low refractive layer.

14 . The display device of claim 13 , wherein the low refractive layer does not comprise hollow inorganic particles of which inner portions are empty.

15 . The display device of claim 13 , wherein the low refractive layer has a refractive index in a range of about 1.21 to about 1.25.

16 . The display device of claim 13 , wherein each of the plurality of non-hollow inorganic particles has a diameter in a range of about 10 nm to about 30 nm.

17 . The display device of claim 13 , wherein
the display element layer comprises a light-emitting element configured to emit first light, and the light control layer includes:
a first light control part including a first quantum dot that converts the first light into second light,
a second light control part including a second quantum dot that converts the first light into third light, and
a third light control part that transmits the first light.

18 . The display device of claim 17 , wherein the color filter layer comprises:
a first filter overlapping the first light control part, a second filter overlapping the second light control part, and a third filter overlapping the third light control part.

19 . The display device of claim 17 , wherein
the first light is blue light, the first quantum dot is configured to convert the blue light into red light, and the second quantum dot is configured to convert the blue light into green light.

20 . The display device of claim 13 , wherein the display device is a television, an external billboard, a portable electronic device, a tablet PC, a car navigation unit, a game console, a personal computer, a laptop computer, or a wearable device.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Chansu
• Kim Inok
• Oh Keunchan
• Lee Gak Seok
• Lee Sanghun
• Lee Soyun
• Jang Jieun
• Jang Chang-Soon

Classifications

• G02B2207/101

  Nanooptics · CPC title

• G02B5/202

  comprising a gas or vapour · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K2102/331

  Nanoparticles used in non-emissive layers, e.g. in packaging layer · CPC title

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title