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Pigment solution for black matrix, black matrix and preparation method thereof, display panel

A technology of black matrix and pigment liquid, applied in pigment paste, photosensitive materials for opto-mechanical equipment, etc., can solve the problems of low resistance, high cost, low shading density, etc., and achieve high resistance, low cost, and access capability strong effect

Active Publication Date: 2021-03-12
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a pigment liquid for black matrix, black matrix and its preparation method, and display panel to solve the problems of low shading density, small resistance and high cost of black matrix in the prior art

Method used

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  • Pigment solution for black matrix, black matrix and preparation method thereof, display panel
  • Pigment solution for black matrix, black matrix and preparation method thereof, display panel
  • Pigment solution for black matrix, black matrix and preparation method thereof, display panel

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preparation example Construction

[0035] The present invention also provides a method of preparing a pigment liquid for a black matrix of the above embodiment, with reference image 3 As shown, including the following steps:

[0036] Step 100, add the sheet-like pigment to the mixture formed by the first dispersing agent and the solvent, stir well.

[0037] Step 200, add a resin in a mixed mixture that is stirred, and continuously oscillating the first predetermined time.

[0038] During the preparation of the above-mentioned black matrix pigment liquid, the mass parts of the added components are specific to: 15 to 35 partial pigments, 1 to 5 parts of resin, 1 to 3 parts of the first dispersant, 60 ~ 85 parts of solvent. .

[0039] The first predetermined time may be from 4 h to 7 h, and the mixing process can be oscillated in the oscillator and / or mixed in a sand mill.

[0040] The present invention also provides a method of preparing a black matrix, a black matrix pigment liquid with a black matrix of the above...

Embodiment 1

[0046] Pigment liquid prepares:

[0047] Add 15 to 25 pieces of titanium dioxide (length, width of 150 nm, thickness of 20 nm) to 1 to 3 copies of BYK dispersing agent and 60 to 85 parts of PMA (propylene glycol methyl etheric acid) in a shake bottle containing zirconum In the mixture, stirring uniform conditions, add 1 to 5 parts of 611 resin;

[0048] The pigment liquid containing a sheet-like pigment was continuously oscillated.

[0049] Black matrix preparation:

[0050] The above pigment liquid is uniform with soluble resin, monomer, initiator, and graft or the like;

[0051] Coating, exposure, making black matrices after developing.

[0052] Tested, the thickness of the black matrix was 0.75 μm, the OD value was 4.3, and the volume resistance was 3.2 × 10. 6 Ω · cm.

Embodiment 2

[0054] Pigment liquid prepares:

[0055] Adding from 20 to 30 parts of titanium dioxide (length, width of 150 nm, thickness of 20 nm), 1 to 3 copies of BYK dispersing agent and 60 ~ 85 parts of PMA (propylene glycol methyl etheric acid) In the mixture, stirring uniform conditions, add 1 to 5 parts of 611 resin;

[0056] The pigment liquid containing a sheet-like pigment was continuously oscillated.

[0057] Black matrix preparation:

[0058] The above pigment liquid is uniform with soluble resin, monomer, initiator, and graft or the like;

[0059] Coating, exposure, making black matrices after developing.

[0060] Test, the thickness of the black matrix is ​​0.8 μm, the OD value is 4.8, and the volume resistance is 2.5 × 10 6 Ω · cm.

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Abstract

The invention discloses a pigment liquid for a black matrix, a black matrix and a preparation method thereof, and a display panel. The pigment liquid for a black matrix includes a first dispersant, a solvent, a resin and flake pigments for reflecting light. The pigment solution for black matrix of the embodiment of the present invention includes the first dispersant, solvent, resin and flake pigment for reflecting light, the pigment solution for black matrix is ​​used to make black matrix, and the flake pigment is capable of blocking the entry of light Strong, can completely reflect light, high OD value, using resin material, low cost, high resistance.

Description

Technical field [0001] The present invention relates to the field of display technology, and more particularly to a black matrix pigment liquid, a black matrix and a preparation method thereof, and a display panel. Background technique [0002] In the liquid crystal display device, the leakage light between black matrix shielding sub-pixels is often used, and the light shielding effect is usually proportional to the black matrix of the light-shielding concentration (OD, OPTICAL DENSITY), the larger the OD value, the better the light shielding effect. [0003] The black matrix in the prior art is a material using metal chromium as a black matrix. Its OD value is high, but the single-layer metal film is high, which is easy to produce color. Multi-layer metal film. It can reduce the reflectance, but increase costs. The other is a resin black matrix with a lower cost, and a black resin is formed in a photoresist, a particle such as carbon, titanium, nickel, and a light-shielding effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00G03F7/004
CPCC09D17/002C09D17/007C09D17/008G03F7/004
Inventor 黄聪张伟董文波
Owner BOE TECH GRP CO LTD
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