Quantum dot display apparatus and manufacturing method thereof

  • US 10,338,428 B2
  • Filed: 12/21/2015
  • Issued: 07/02/2019
  • Est. Priority Date: 09/24/2015
  • Status: Active Grant
First Claim
Patent Images

1. A manufacturing method of a quantum dot display apparatus, comprising the following steps:

  • Step 1;

    a lower substrate is provided, and a black matrix is formed on the lower substrate;

    Step 2;

    a quantum dot resin composition is coated on the lower substrate between the black matrix, pre-baking the lower substrate coated with the quantum dot resin composition to remove an organic solvent in the quantum dot resin composition;

    Step 3;

    a red photoresist is applied on the quantum dot resin composition and the black matrix, excess red photoresist and excess quantum dot resin composition are removed by prebaking, exposing, and developing processes to bake and form a red sub-pixel region comprising a red photoresist layer and a first quantum dot resin composition layer disposed below the red photoresist layer;

    Step 4;

    the quantum dot resin composition is further coated between the black matrix on the lower substrate, pre-baking the lower substrate coated with the quantum dot resin composition to remove the organic solvent in the quantum dot resin composition;

    Step 5;

    a green photoresist is applied on the quantum dot resin composition and the black matrix, excess green photoresist and excess quantum dot resin composition are removed by prebaking, exposing, and developing processes to bake and form a green sub-pixel region comprising a green photoresist layer and a second quantum dot resin composition layer disposed below the green photoresist layer;

    Step 6;

    a transparent organic photoresist is coated on the lower substrate and the black matrix to form a blue sub-pixel region, thus forming a color filter layer;

    Step 7;

    a rear polarizing layer is set on the color filter layer, a lower alignment layer is formed on the polarizing layer, to finish the formation of a color filter substrate; and

    Step 8;

    an array substrate is provided, and the color filter substrate and the array substrate are paired, a liquid crystal is filled to form a liquid crystal layer, a blue light backlight module is disposed in a bottom of the color filter substrate to produce the quantum dot display apparatus;

    wherein in the steps 2 and 4, the quantum dot resin composition comprising surface modified red quantum dots, surface modified green quantum dots, alkali-soluble resins, solvents and dispersants;

    wherein the material of the surface modified red quantum dots, surface modified green quantum dots comprising one or more than one material selected from the material of the II-VI family of semiconductor nano-materials, III-V family of semiconductor nano-materials, and IV-VI family of semiconductor nano-materials;

    the alkali-soluble resin comprising styrene-maleic anhydride copolymer or aromatic acid (meth) acrylate half ester;

    the solvent comprising one or more than one material selected from the material of formic acid, acetic acid, chloroform, acetone, butanone, fatty alcohols, ethylene glycol monomethyl ether, ethylene glycol monomethyl ether, ethylene glycol monomethyl ether, ethylene glycol monomethyl ether, diethylene glycol diethyl ether, ethyl acetate, methyl ethyl ketone, methyl isobutyl ketone, ethylene glycol monomethyl ether, γ

    -butyrolactone, 3-ether acetate propionate, butyl carbitol, butyl carbitol, acetate, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, cyclohexane, xylene, and isopropyl alcohol; and

    the dispersant may be selected from amide-based polymer, modified polyurethane, modified polyacrylate, and silicone surfactant.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×