Self-oriented material, self-oriented liquid crystal material and manufacturing method of liquid crystal panel

Patent metadata

Field	Value
Publication number	US-2020165518-A1
Application number	US-201816088343-A
Country	US
Kind code	A1
Filing date	Aug 30, 2018
Priority date	Jan 30, 2018
Publication date	May 28, 2020
Grant date	—

Abstract

The invention provides a self-oriented material, a self-oriented liquid crystal material and a manufacturing method of the liquid crystal panel. The self-oriented material provided by the invention can be used for carrying out alignment on liquid crystal molecules, and a polyimide alignment layer is not required to he arranged in the liquid crystal panel when the self-oriented material is added into the liquid crystal material. The self-oriented liquid crystal material disclosed by the invention contains the self-oriented material, the self-oriented material can be used for carrying out alignment on liquid crystal molecules, therefore a polyimide alignment layer is not required to be arranged in the liquid crystal panel. According to the manufacturing method of the liquid crystal panel, the orientation of the liquid crystal molecules is realized by utilizing the self-oriented material in the self-oriented liquid crystal material, and the polyimide alignment layer does not need to be manufactured, so that the process for manufacturing the polyimide alignment layer is saved, and the production cost is reduced.

First claim

What is claimed is:

1 . A self-oriented material, comprising one or more of a compound conforming to the general formula (I):

a part except sixteen R groups in the general formula is defined as a dendritic structure body; wherein the sixteen R groups are selected from one or two of the following general formula (II) and the general formula (III):

the plural

in the structural general formula (II) and the general formula (III) are aromatic rings or cycloalkanes;
SP1 and SP2 are chemical bonds, —(CH 2 ) n or —(CH 2 ) n —O—; n is an integer from 1 to 6 in the —(CH 2 ) n or —(CH 2 ) n —O, wherein one or more of the —(CH 2 )— can be replaced with —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —OCH 2 —, —CH 2 O—, —CH═CH—, —CF═CF—, or —C≡C—.
P is an alkyl group with 3 −8 C atoms connected with a polymerizable group at the tail end, wherein one or more —CH 2 — of the alkyl groups can be substituted with — 0 —, —CONH—, —COO—, —O—CO—, —CO—, or —CH═CH— group, one or more H atoms in the alkyl group can he replaced by F or CL atoms;
X is a substituted group selected from —F, —Cl, —Br, —CH 3 , —CN, and an alkyl group with two to eight C atoms; one or more non-adjacent —CH 2 — in the alkyl group can be replaced by — 0 — or —S—; m is the number of the substituent groups X connected to the same;

m is an integer from zero to four;
R′ is a hydrogen atom or an alkyl or alkenyl group having one to eight C atoms, wherein the alkyl group and the alkenyl group are in a straight chain shape;
R selected from the structural general formula (II) or the structural general formula (III) is connected with the dendritic structure main body in the general formula (I) through the tail end of the P group.

2 . The self-oriented material according to claim 1 , wherein the aromatic ring comprises a benzene ring, and the SP1 and the SP2 are the same or different; wherein the polymerizable group at the tail end of the P group comprises one of a methacrylate group, an acrylic ester group, a vinyl group and an ethyleneoxy group.

3 . The self-oriented material according to claim 1 , wherein sixteen R groups of the general formula (I) are selected from one or more of the following structural formulas:

4 . A self-oriented liquid crystal material, comprising a liquid crystal material and the self-oriented material as claimed in claim 1 , wherein the liquid crystal material comprises liquid crystal molecules.

5 . The self-oriented liquid crystal material according to claim 4 , wherein the mass percent of the self-oriented material in the self-oriented liquid crystal material is 0.1%-2%.

6 . A manufacturing method of the liquid crystal panel comprising the following steps:
providing a first substrate, a second substrate and the self-oriented liquid crystal material as claimed in claim 4 ; dripping or ink-jet printing the self-oriented liquid crystal material on the first substrate or the second substrate, and attaching the first base plate and the second base plate to each other in a aligned manner; the self-oriented liquid crystal material between the first substrate and the second substrate forming a liquid crystal layer, the self-oriented material in the liquid crystal layer being adsorbed on the surface of the first substrate and the surface of the second substrate by virtue of the dendritic structure body, and the self-oriented material being perpendicular to the surface of the first substrate and the surface of the second substrate, so that the liquid crystal molecules being guided to be perpendicular to the first substrate and the second substrate; applying voltage to the two sides of the liquid crystal layer, so that the liquid crystal molecules being deflected, carrying out ultraviolet irradiation on the liquid crystal layer while voltage being applied, the self-oriented material being subjected to polymerization reaction, forming a first polymer layer and a second polymer layer on the surface of the first substrate and the surface of the second substrate respectively; removing the voltage on the two sides of the liquid crystal layer, and under the action of the first polymer layer and the second polymer layer, the liquid crystal molecules in the liquid crystal layer generating a pre-inclination angle.

7 . The manufacturing method of the liquid crystal panel according to claim 6 , wherein a first electrode is arranged on the first substrate, and a second electrode is arranged on the second substrate; when the first substrate is in alignment fit with the second substrate, the first electrode is arranged towards the second substrate, and the second electrode is arranged towards the first substrate; voltage is formed between the first electrode and the second electrode, and therefore voltage is applied to the two sides of the liquid crystal layer,

8 . The manufacturing method of the liquid crystal panel according to claim 6 , further comprising steps of coating frame glue and curing frame glue; and the step of coating frame glue occurs before the alignment of the first substrate and the second substrate is carried out, wherein the step of coating frame glue comprises: coating a frame glue on the periphery of the second substrate or the first substrate corresponding to the self-oriented liquid crystal material; the step of curing the frame glue occurs before the voltage is applied to the two sides of the liquid crystal layer, wherein the step of curing the frame glue comprises at least one of UV curing and thermal curing.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Wu Ling

Classifications

• C09K19/56 Primary

  Aligning agents · CPC title

• G02F1/133788

  by light irradiation, e.g. linearly polarised light photo-polymerisation · CPC title

• C09K19/3842

  Polyvinyl derivatives · CPC title

• C07C229/30

  the carbon skeleton being acyclic and unsaturated · CPC title

• C07C237/16

  the carbon skeleton being acyclic and unsaturated · CPC title