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Pigment solution for black matrix, black matrix as well as preparation method of pigment solution, display panel

A technology of black matrix and pigment liquid, which is applied in the direction of pigment slurry and photosensitive materials used in optical mechanical equipment, etc., can solve the problems of low resistance, high cost, and low shading density, and achieve high resistance, low cost, and high penetration ability strong effect

Active Publication Date: 2018-07-27
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 as well as preparation method of pigment solution, display panel
  • Pigment solution for black matrix, black matrix as well as preparation method of pigment solution, display panel
  • Pigment solution for black matrix, black matrix as well as preparation method of pigment solution, display panel

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preparation example Construction

[0035] The present invention also provides a kind of preparation method of the black matrix pigment liquid of preparation above-mentioned embodiment, refer to image 3 shown, including the following steps:

[0036] Step 100, adding flake pigments into the mixed liquid formed by the first dispersant and solvent, and stirring evenly.

[0037] Step 200, adding resin to the homogeneously stirred mixture, and vibrating continuously for a first predetermined time.

[0038] In the preparation process of the above-mentioned pigment solution for black matrix, the mass parts of each component added are specifically: 15-35 parts of flake pigment, 1-5 parts of resin, 1-3 parts of first dispersant, 60-85 parts of solvent .

[0039] The above-mentioned first predetermined time may be 4h-7h, and the above-mentioned mixing process may be oscillating and mixing in a vibrating machine and / or sanding and mixing in a sand mill.

[0040] The present invention also provides a method for preparin...

Embodiment 1

[0046] Pigment solution preparation:

[0047] Add 15 to 25 parts of flaky titanium dioxide (150nm in length and width, and 20nm in thickness) to 1 to 3 parts of BYK dispersant and 60 to 85 parts of PMA (propylene glycol methyl ether acetic acid) in a shake bottle equipped with zirconium beads. ester) mixture, under the condition of uniform stirring, add 1 to 5 parts of 611 resin;

[0048] Vibrate continuously for 5 hours to prepare a pigment solution containing flake pigments.

[0049] Black matrix preparation:

[0050] Mix the above pigment liquid with soluble resin, monomer, initiator, leveling agent, etc.;

[0051] After coating, exposing and developing, a black matrix is ​​produced.

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

Embodiment 2

[0054] Pigment solution preparation:

[0055] Add 20 to 30 parts of flaky titanium dioxide (150nm in length and width, and 20nm in thickness) to 1 to 3 parts of BYK dispersant and 60 to 85 parts of PMA (propylene glycol methyl ether acetic acid) in a shake bottle equipped with zirconium beads. ester) mixture, under the condition of uniform stirring, add 1 to 5 parts of 611 resin;

[0056] Vibrate continuously for 5 hours to prepare a pigment solution containing flake pigments.

[0057] Black matrix preparation:

[0058] Mix the above pigment liquid with soluble resin, monomer, initiator, leveling agent, etc.;

[0059] After coating, exposing and developing, a black matrix is ​​produced.

[0060] After testing, 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 solution for a black matrix, a black matrix as well as a preparation method of pigment solution and a display panel. The pigment solution for the black matrix is prepared from a first dispersion agent, a solvent, resin and flaky pigment for reflecting light. The pigment solution for the black matrix according to embodiments of the invention is prepared from the first dispersion agent, the solvent, the resin and the flaky pigment for reflecting light, the pigment solution for the black matrix is used for producing the black matrix, the flaky pigment is high incapability for insulating the entry of the light, the light can be completely reflected, an OD value is higher, the cost is low by adopting the resin material, and the resistivity is higher.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pigment solution for a black matrix, a black matrix and a preparation method thereof, and a display panel. Background technique [0002] In a liquid crystal display device, a black matrix is ​​often used to block light leakage between sub-pixels. The light-shielding effect is generally proportional to the optical density (OD, Optical Density) of the black matrix. The larger the OD value, the better the light-shielding effect. [0003] One type of black matrix in the prior art is to use metal chromium as the material of the black matrix, and its OD value is high, which can be as high as 5.0, but the reflectivity of a single-layer metal film is high, and color shift is easy to occur. Multi-layer metal film is used The reflectivity can be reduced, but at an increased cost. The other is to use a lower-cost resin black matrix, doping carbon, titanium, nickel and other particles in...

Claims

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Application Information

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Patent Type & Authority Applications(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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