Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11567355-B2
Application number	US-202117560145-A
Country	US
Kind code	B2
Filing date	Dec 22, 2021
Priority date	Nov 17, 2017
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A display apparatus includes a first base substrate, a partitioning wall pattern disposed between a first pixel area and a second pixel area and on the first base substrate, a first color conversion pattern disposed in the first pixel area and including quantum dot particles and/or phosphor, a first fluorine layer disposed on the first color conversion layer, fluorine content of the first fluorine layer being higher than that of the first color conversion pattern, and a second color conversion pattern disposed in the second pixel area and including quantum dot particles and/or phosphor.

First claim

What is claimed is:

1. A display apparatus, comprising:
a first base substrate;
a partitioning wall pattern between a first pixel area and a second pixel area and on the first base substrate;
a first color conversion pattern in the first pixel area and comprising quantum dot particles and/or phosphor;
a first fluorine layer directly on and covering the first color conversion pattern, a fluorine content of the first fluorine layer being higher than that of the first color conversion pattern;
a second color conversion pattern in the second pixel area and comprising quantum dot particles and/or phosphor; and
a second fluorine layer on the second color conversion pattern and spaced apart from the first fluorine layer, a fluorine content of the second fluorine layer being higher than that of the second color conversion pattern,
wherein an upper surface of at least one of the first and second fluorine layers is higher than an upper surface of the partitioning wall pattern, and
wherein an upper surface of the first fluorine layer has a convex shape with respect to the first base substrate.

2. The display apparatus of claim 1 , further comprising:
a hydrophobic layer on the partitioning wall pattern.

3. The display apparatus of claim 2 , wherein the upper surface of at least one of the first and second fluorine layers is higher than an upper surface of the hydrophobic layer on the partitioning wall pattern.

4. The display apparatus of claim 1 , further comprising:
a light blocking pattern overlapping with the partitioning wall pattern and comprising a light blocking material.

5. The display apparatus of claim 1 , wherein a refractive index of the first fluorine layer is lower than that of the first color conversion pattern, and
a refractive index of the second fluorine layer is lower than that of the second color conversion pattern.

6. The display apparatus of claim 5 , further comprising:
a third pixel area spaced apart from the first and second pixel areas;
a transparent layer in the first pixel area, the second pixel area, and the third pixel area to cover the first fluorine layer and the second fluorine layer;
a second base substrate facing the first base substrate;
a thin film transistor on the second base substrate;
a liquid crystal layer between the first base substrate and the second base substrate; and
a backlight unit for emitting a blue light,
wherein the first color conversion pattern comprises red quantum dot particles and/or red phosphor, and the second color conversion pattern comprises green quantum dot particles and/or green phosphor.

7. The display apparatus of claim 6 , further comprising:
a wire grid polarizer on the transparent layer; and
an insulation layer on the wire grid polarizer.

8. The display apparatus of claim 7 , further comprising:
a first color filter between the first color conversion pattern and the first base substrate; and
a second color filter between the second color conversion pattern and the first base substrate.

9. The display apparatus of claim 1 , wherein the first and second color conversion patterns further comprise epoxy and/or epoxy-acrylate, and
the first and second fluorine layers comprise fluorine and/or fluoropolymer.

10. The display apparatus of claim 1 , wherein the first color conversion pattern and the first fluorine layer are in one layer whose boundary is unclear, the one layer having a first portion that is closer to the first base substrate and a second portion that is further from the first base substrate, and
a content of fluorine and/or fluoropolymer in the second portion is greater than that in the first portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Boram
• Kodaira Taimei
• Park Sangji
• Bae Kwangsoo
• Yun Haeju
• Cho Donchan
• Cho Youngje

Classifications

• G02F1/133514

  Colour filters · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133617 Primary

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• G02F1/133621

  providing coloured light (G02F1/133617, G02F1/133533 take precedence) · CPC title

• G02F1/133614

  using photoluminescence, e.g. phosphors illuminated by UV or blue light · CPC title