Luminescent complex, luminescent material, substrate for display and production method thereof, and display apparatus

Patent metadata

Field	Value
Publication number	US-10287498-B2
Application number	US-201515311718-A
Country	US
Kind code	B2
Filing date	Dec 22, 2015
Priority date	Jul 13, 2015
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

The embodiments of this disclosure provide a luminescent complex, a luminescent material, a substrate for display and a production method thereof, and a display apparatus. This disclosure relates to the technical field of display. It is possible to increase the dispersibility of the luminescent particles, such as quantum dots or the like in the main material of a color filter to solve problems, such as uneven light emission, low light emission efficiency or the like of a substrate for display comprising the luminescent particles, so as to further reduce the loss of the back light brightness. This luminescent complex comprises a luminescent particle; an organic ligand attached to the surface of the luminescent particle; group A in the structural formula of the organic ligand is a binding group which binds to the luminescent particle; and in the structural formula of the organic ligand, the carbon-carbon double bond which is attached to the X1 group, the X2 group and the X3 group may be subjected to a crosslinking reaction with a photosensitive resin under an exposure condition. This disclosure further provides a luminescent material which is used for the luminescent complex and comprises the luminescent complex, a substrate for display comprising this luminescent material, and a production method of a display apparatus.

First claim

What is claimed is:

1. A luminescent material, comprising:
a photosensitive resin composed of a negative photoresist material having a double bond in a molecule thereof; and
a luminescent complex, comprising:
a luminescent particle;
an organic ligand located on the surface of the luminescent particle;
the organic ligand has a structural formula of

wherein group A is a binding group which binds to the luminescent particle;
X 1 group, X 2 group, and X 3 group each independently represent a hydrogen atom, an aryl group having a carbon atom number of 6-30, a halogen atom, —CH 3 , —(CH 2 ) a —CH 3 , —COOH, —COOCH 3 , or —CH═CH 2 , wherein a is an integer greater than or equal to 1;
E group represents a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a mercapto group, an amino group, a formyl group, —SO 2 NH 2 , —NHNH 2 , a saturated carbon chain having a carbon atom number of 1-30, or an unsaturated carbon chain having a carbon atom number of 1-10;
D group represents a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a mercapto group, an amino group, a formyl group, —SO 2 NH 2 , —NHNH 2 , a saturated carbon chain having a carbon atom number of 1-30, or an unsaturated carbon chain having a carbon atom number of 1-10;
G group represents —COO— or —CONH—;
wherein m is an integer and 0≤m≤30; n is an integer and 0<n≤30; s is 0; and p is an integer and 1≤p•(m+n+s)≤30, and
in the structural formula of the organic ligand, the carbon-carbon double bond which is attached to the X 1 group, the X 2 group and the X 3 group may be subjected to a crosslinking reaction with a photosensitive resin under an exposure condition;

wherein a mass proportion of the luminescent complex incorporated into the photosensitive resin is 3-20% based on the mass of the photosensitive resin.

2. The luminescent material according to claim 1 , wherein the luminescent particle is a quantum dot.

3. The luminescent material according to claim 2 , wherein:
the quantum dot comprises at least one compound selected from CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgTe, GaN, GaAs, InP, and InAs; and
the A group represents any one of NC—, HOOC—, HRN—, O═P(R) 2 —, POOOH—, RS—, and RSS—, and the R group represents any one of a hydrogen atom, a saturated carbon chain having a carbon atom number of 1-10, and an unsaturated carbon chain having a carbon atom number of 1-10.

4. The luminescent material according to claim 3 , wherein if the quantum dot comprises two or more of the compounds, the structure of the quantum dot is at least one of a core-shell type, a uniformly mixed type, and a gradiently mixed type.

5. The luminescent material according to claim 1 , wherein the organic ligand has at least one structural formula of the group consisting of:

6. A substrate for display, which comprises a base substrate; and color filter units of various colors located on the base substrate in an array arrangement,
wherein at least a color filter unit of one color comprises a luminescent material cured by exposure, and the luminescent material is the luminescent material of claim 1 , and
in the color filter unit of one color comprising the luminescent material cured by exposure, the luminescent particles in the luminescent material generate red light, green light, or blue light after being excited by light irradiation.

7. A display apparatus comprising the substrate for display as claimed in claim 6 .

8. The display apparatus according to claim 7 , wherein the display apparatus further comprises a back light module, wherein the back light module provides light irradiation to the substrate for display.

9. The display apparatus according to claim 8 , wherein the light irradiation is blue light irradiation.

10. The display apparatus according to claim 7 , wherein the substrate for display is a color filter substrate; and
the display apparatus further comprises an organic electroluminescent display panel corresponding to the color filter substrate;
wherein the organic electroluminescent display panel provides white light or blue light for the color filter substrate.

11. A production method of the substrate for display as claimed in claim 6 , comprising the steps of:
coating a luminescent material on a base substrate; and
sequentially performing first heating, exposure, development, and second heating on the luminescent material to form at least a color filter unit of one color.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zhou Tingting
• Zhang Bin
• Qi Yonglian

Classifications

• Y10S977/824

  Group II-VI nonoxide compounds, e.g. CdxMnyTe · CPC title

• G02F2001/133614

  Physics · mapped topic

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• Y10S977/892

  Liquid phase deposition · CPC title

• G02F1/133617

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