A kind of alignment layer of cholesteric liquid crystal polymer and its preparation method, liquid crystal display panel
A technology of cholesteric liquid crystals and alignment layers, applied in nonlinear optics, instruments, optics, etc., can solve the problems of high difficulty, high process cost, complex manufacturing process of multi-domain thin-film liquid crystal display devices, etc., and achieve easy operation and method simple effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0038] Embodiments of the present invention provide a method for preparing an alignment layer of a cholesteric liquid crystal polymer, comprising:
[0039] 1) forming a conventional alignment layer on the substrate;
[0040] In this step, a conventional alignment material is coated on the substrate, and a conventional alignment layer is formed on the substrate by rubbing. Wherein, the conventional alignment layer may be a rubbing alignment layer or a photo alignment layer. It can be understood that those skilled in the art may select different types of alignment layers according to actual production conditions, which are not specifically limited herein.
[0041] 2) coating a mixture layer formed by mixing binaphthyl diol chiral compound, cholesteric liquid crystal polymerizable monomer and photoinitiator on the conventional alignment layer;
[0042] In this step, a mixture layer is also coated on the conventional alignment layer, and the mixture layer is formed by mixing a b...
Embodiment 1
[0066] Coat the PI alignment layer material on the glass substrate, and make it have a certain alignment direction by rubbing or other methods; combine the binaphthyl bisphenol chiral compound, the cholesteric liquid crystal polymerizable monomer, and the photoinitiator according to 2.0% / 93.3% / 4.7% mass ratio mixed evenly, the variation curve of the pitch of the mixture with temperature is as follows Figure 10 As shown, wherein the pitch at 30°C is 1000nm; the above-mentioned mixture is coated on the PI alignment layer with a thickness of 125nm, and the operation is protected from light, and the coating is uniform; the use of a mask and the light intensity is 5mw / cm 2 UV light, and irradiate the coated mixture at 30°C for 40 minutes to polymerize the cholesteric liquid crystal polymerizable monomers in the irradiated part to form a cholesteric liquid crystal polymer; The cholesteric liquid crystal polymerizable monomer of light irradiation (that is, unreacted) is removed, th...
Embodiment 2
[0068] Coating layer PI alignment layer material on the glass substrate, make it have a certain alignment direction by rubbing etc. method; Combine binaphthyl diphenol chiral compound, cholesteric liquid crystal polymerizable monomer, photoinitiator according to 2.0% / 93.3 % / 4.7% mass ratio is mixed evenly, and the variation curve of the pitch of the mixture with temperature is as follows Figure 10 As shown, among them, the pitch at 65°C is 1200nm; the above-mentioned mixture is coated on the PI alignment layer with a thickness of 300nm, and the operation is protected from light, and the coating is uniform; the use of a mask and the light intensity is 5mw / cm 2UV light is used to irradiate the coated mixture at 65°C for 40 minutes to polymerize the cholesteric liquid crystal polymerizable monomer in the irradiated part to form a cholesteric liquid crystal polymer; The cholesteric liquid crystal polymerizable monomer of light irradiation (that is, unreacted) is removed, thereby ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More