Display device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-12426472-B2
Application number	US-202017926516-A
Country	US
Kind code	B2
Filing date	Oct 12, 2020
Priority date	Jun 9, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A display device includes: a display panel; and a light control member disposed on the display panel. The light control member includes: a plurality of barrier ribs spaced apart from each other; and a plurality of light control units disposed between the plurality of barrier ribs, respectively, and at least one of the plurality of light control units includes: a first layer including a first base resin, and a coupling agent dispersed in the first base resin; and a second layer disposed on the first layer, and including a second base resin and light emitting bodies dispersed in the second base resin.

First claim

The invention claimed is:

1. A display device comprising:
a display panel; and
a light control member disposed on the display panel,
wherein the light control member includes:
a plurality of barrier ribs spaced apart from each other; and
a plurality of light control units disposed between the plurality of barrier ribs, respectively,

wherein at least one of the plurality of light control units includes:
a first layer including a first base resin, and a coupling agent dispersed in the first base resin; and
a second layer disposed on the first layer, and including a second base resin and light emitting bodies dispersed in the second base resin.

2. The display device of claim 1 , wherein the second layer further includes scattering particles dispersed in the second base resin.

3. The display device of claim 1 , wherein the first layer further includes scattering particles dispersed in the first base resin.

4. The display device of claim 1 , wherein the first layer has a first inorganic material concentration, and the second layer has a second inorganic material concentration different from the first inorganic material concentration.

5. The display device of claim 4 , wherein a difference between the first inorganic material concentration and the second inorganic material concentration is about 1 percentage by weight (wt %) to about 20 wt %.

6. The display device of claim 1 , wherein the second layer does not contain the coupling agent.

7. The display device of claim 1 , wherein a difference between acid values and amine values in each of the first base resin and the second base resin is less than about 5 milligrams of potassium hydroxide per gram (mg KOH/g).

8. The display device of claim 1 , wherein a difference between acid values and amine values in each of the first base resin and the second base resin is about 35 mg KOH/g or more.

9. The display device of claim 1 , wherein the display panel comprises a light emitting device, which generates first light, and
the plurality of light control units comprises a first light control unit, which transmits the first light, a second light control unit, which converts the first light into second light, and a third light control unit, which converts the first light into third light.

10. The display device of claim 9 , wherein:
the first light control unit comprises a first control layer including the coupling agent, and a second control layer disposed on the first control layer;
the second light control unit comprises a third control layer including the coupling agent, and a fourth control layer disposed on the third control layer and including first light emitting bodies, which convert the first light into the second light;
the third light control unit comprises a fifth control layer including the coupling agent, and a sixth control layer disposed on the fifth control layer and including second light emitting bodies, which convert the first light into the third light, and
the light emitting bodies include the first light emitting bodies and the second light emitting bodies.

11. The display device of claim 10 , wherein each of the first control layer, the third control layer, and the fifth control layer further comprises the first light emitting bodies.

12. The display device of claim 10 , wherein the third control layer further comprises the first light emitting bodies, and the fifth control layer further comprise the second light emitting bodies.

13. A display device comprising:
a display panel, which generates first light; and
a light control member disposed on the display panel,
wherein the light control member includes:
a first light control unit, which transmits the first light, a second light control unit, which converts the first light into second light, and a third light control unit, which converts the first light into third light,

wherein at least one of the first light control unit, the second light control unit, and the third light control unit includes:
a first layer including a first base resin, a coupling agent dispersed in the first base resin, and scattering particles dispersed in the first base resin; and
a second layer disposed on the first layer, and including a second base resin and light emitting bodies dispersed in the second base resin.

14. A method for manufacturing a display device, the method comprising:
preparing a display panel; and
forming a light control member on the display panel,
wherein the forming of the light control member includes:
providing a first ink including a coupling agent to form a first ink layer;
providing a second ink including light emitting bodies on the first ink layer to form a second ink layer; and
curing the first ink layer and the second ink layer.

15. The method of claim 14 , wherein: the first ink comprises a first resin, scattering particles dispersed in the first resin, and the coupling agent dispersed in the first resin;
the second ink comprise a second resin, scattering particles dispersed in the second resin, and the light emitting bodies dispersed in the second resin; and
the first ink has a first inorganic material concentration, and the second ink has a second inorganic material concentration different from the first inorganic material concentration.

16. The method of claim 15 , wherein a difference between the first inorganic material concentration and the second inorganic material concentration is about 1 wt % to about 10 wt %.

17. The method of claim 15 , wherein a difference between acid values and amine values in each of the first resin and the second resin is less than about 5 mg KOH/g or about 35 mg KOH/g or more.

18. The method of claim 14 , wherein the forming of the light control member further includes forming a plurality of barrier ribs before the providing of the first ink, and
the first ink and the second ink are provided in at least one of regions defined between the plurality of barrier ribs.

19. The method of claim 18 , wherein the providing of the first ink comprises providing, the regions between the plurality of barrier ribs, with a first pattern ink including scattering particles, a second pattern ink including first light emitting bodies, and a third pattern ink including second light emitting bodies different from the first light emitting bodies, respectively.

20. The method of claim 18 , wherein:
the providing of the first ink comprises providing the first ink commonly to the regions between the plurality of barrier ribs; and
the providing of the second ink comprises providing a first sub-ink including the first light emitting bodies, and a second sub-ink including the second light emitting bodies different from the first light emitting bodies, on the first ink layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Soodong
• Kwon Youngsoo
• Paek Hye-Jin

Classifications

• H10K59/877

  comprising scattering means · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K2102/331

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

• H10K50/115

  comprising active inorganic nanostructures, e.g. luminescent quantum dots · CPC title

• G02B5/206

  comprising particles embedded in a solid matrix · CPC title