US 2020/0348562 A1 · COLOR FILTER SUBSTRATE AND MANUFACTURING METHOD THEREOF, AND DISPLAY PANEL

Abstract

A color filter substrate and a manufacturing method thereof are provided. A surface modification agent is used to modify an outside surface of a quantum dot material to lower surface energy of the quantum dot material. The quantum dot material is then mixed with a color resist material to form a color filter mixture solution, and the color filter mixture solution is then dried. Since the quantum dot material has lowered surface energy, during the process of drying the color filter mixture material, the quantum dot material and the color resist material are automatically separated into different layers thereby simultaneously forming a quantum dot layer and a color resist layer, so as to reduce the operations of manufacturing a color filter substrate and lower down the manufacturing cost.

Claims12

Dependent claims

A color filter substrate, comprising a base plate and a color resist layer and a quantum dot layer sequentially stacked on the base plate, the quantum dot layer having a light emission wavelength identical to a light transmission wavelength of the color resist layer, quantum dots having outside surfaces that are combined with surface modification groups.

A manufacturing method of a color filter substrate, comprising the following steps:

providing a base plate and depositing a black matrix material layer on the base plate;
patterning the black matrix material layer to form a black matrix, wherein the black matrix comprises a plurality of deposition troughs arranged in an array;
synthesizing and forming quantum dots, such that the quantum dots having outside surfaces that are combined with surface modification groups;
providing a color resist material and a solvent and mixing the color resist material and the quantum dots so synthesized and formed with the solvent to form color filter mixture solutions;
depositing the color filter mixture solutions in the deposition troughs, respectively;
and
drying the color filter mixture solutions to simultaneously form a color resist layer and a quantum dot layer stacked on the color resist layer, wherein the color resist layer is located between the base plate and the quantum dot layer.

4 more elements

A display panel, comprising a liquid crystal layer, an array substrate, and a color filter substrate, the array substrate and the color filter substrate being arranged opposite to each other, the liquid crystal layer being located between the color filter substrate and the array substrate, wherein the color filter substrate comprises a base plate and a color resist layer and a quantum dot layer sequentially stacked on the base plate, the quantum dot layer having a light emission wavelength identical to a light transmission wavelength of the color resist layer, quantum dots having outside surfaces that are combined with surface modification groups.

Dependencies are inferred from the claim text.

Facts

Application

16/081,382Filed 25 Jan 2018

Priority

CN 201710738497.024 Aug 2017

Published

5 Nov 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G02F 1/133516
Colour filters: methods for their manufacture, e.g. printing, electro-deposition or photolithography
G02F 1/133617
Illuminating devices: illumination with ultraviolet light; Luminescent elements or materials associated to the cell
G02F 1/133512
Filters, e.g. light shielding masks: light shielding layers, e.g. black matrix
G02F 1/1336
Structural association of cells with optical devices, e.g. polarisers or reflectors: illuminating devices

Color filter substrate and manufacturing method thereof, and display panel

Life of this patent

Color filter substrate and manufacturing method thereof, and display panel

Life of this patent

Abstract

Claims12