Structure ordered product, method of producing the same and applications of the same

An orderly and structured technology, applied in chemical instruments and methods, layered products, nanotechnology for materials and surface science, etc., can solve problems such as expensive temperature, sensitivity, and changing component properties of liquid crystal materials

Inactive Publication Date: 2005-03-09
REVEO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But a disadvantage of many of these devices is that without further processing, the liquid crystal material is expensive and sensitive to temperature
Also these materials tend to unfavorably absorb other materials which alter the properties of the components etc.
Moreover, while polymeric LCs can modify some of these disadvantages, such LCs may not be ideal for many applications due to, for example, insufficient mechanical properties (rigidity) and / or optical properties (refractive index, characteristic wavelength, etc.)

Method used

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  • Structure ordered product, method of producing the same and applications of the same
  • Structure ordered product, method of producing the same and applications of the same
  • Structure ordered product, method of producing the same and applications of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Figure 4A Experimental reflectance spectra of film samples prepared according to the method of the present invention are shown. Curve 4A1 is the reflection of a planar CLC film of a blend of BASF Acrylate CLC Polymer #181 (45 wt%), chiral nematic (53 wt%), and a small amount of Ciba-Geigy photoinitiator Irgacure 184 (2 wt%) spectrum. The chiral nematic itself consists of Merck low molecular weight nematic liquid crystal E44 and a chiral dopant R1011 (0.7 wt% based on chiral nematic). The films were 20 μm thick and were produced in the conventional manner, ie first spin-coating a mechanically rubbed positioning layer of polyimide on two glass substrates. Glass beads having a diameter of 20 μm were then dispersed between the two glass substrates so that the coated sides faced each other. The CLC blend is then introduced between the substrates by capillary action. After mechanical shearing (small lateral movement of the substrate forces the LC molecules to align), the...

Embodiment II

[0064] Figure 4BExperimental reflectance spectra of film samples prepared according to the method of the present invention are shown. Curve 4B1 is the spectrum of a planar CLC film of a blend of BASF acrylate CLC polymer #181 (26 wt%), chiral nematic (69 wt%) and a small amount of Ciba-Geigy photoinitiator Irgacure 184 (5 wt%) . The chiral nematic itself consists of Merck low molecular weight nematic liquid crystal E44 and chiral dopant CB15 (24.4% by weight based on chiral nematic). The film was 20 μm thick and was prepared in a similar manner to Example 1 above. After photopolymerizing the film samples with a UV lamp and removing one of the substrates, the reflective layer 4A1 was removed from the "bare" film side. In the context of the above discussion, A is BASF 181 polymer and B is a low molecular weight chiral nematic. Films containing the blend (A+B) were prepared. Subsequent removal of component B (low molecular weight chiral nematic) by dissolution with acetone ...

Embodiment III

[0066] Figure 4C Experimental reflectance spectra of film samples prepared according to the method of the present invention are shown. Curve 4C1 is the reflection of a planar CLC film of a blend of BASF acrylate CLC polymer #181 (45 wt%), chiral nematic (53 wt%), and a small amount of Ciba-Geigy photoinitiator Irgacure 184 (2 wt%) spectrum. The chiral nematic itself consists of Merck low molecular weight nematic liquid crystal E44 and a chiral dopant R1011 (0.7 wt% based on chiral nematic). The film was 20 μm thick and was prepared in a similar manner to that described above. After photopolymerizing the film samples with a UV lamp and removing one of the substrates, the reflective layer 4A1 was removed from the "bare" film side. In the context of the above discussion, A is BASF 181 polymer and B is a low molecular weight chiral nematic. Films containing the blend (A+B) were prepared. Subsequently, component B (low molecular weight chiral nematic) was removed by dissolvin...

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Abstract

A structure and apparatus is described which utilizes the intrinsic self-assembling or aligning process of liquid crystal (LC) molecules to form an ordered structure, such as a structure having nematic or cholesteric ordering. The invention includes subtracting a constituent from a structure that includes a liquid crystal, to form a 'mold' or polymer matrix on a molecular level. By adding and / or subtracting materials to or from the mold, a liquid crystal-like structure may be obtained. This structure includes all or at least some non-LC material, while exhibiting some LC characteristic. The liquid crystal-like structure overcomes the drawbacks of LCs such as temperature sensitivity and mechanical instability.

Description

[0001] This application is a Chinese patent application filed on August 12, 1999 (National application number is No.99813207.1, international application number is PCT / US 99 / 18381 ) for a divisional application. technical field [0002] The present invention relates to structurally ordered thin films and more particularly to ordered thin films for optical applications prepared using a new preparation method. Background technique [0003] Throughout this application various publications and patents are referred to by explicit reference. The publications and patent disclosures referenced in this application are hereby incorporated by reference for the present disclosure. [0004] Liquid crystals exist in a phase state between crystalline solids and isotropic liquids. The molecules of these compounds are usually rod-shaped, with the long molecular axis called the director. Liquid crystal phases are characterized by long-range ordering of the molecules (ie in the sense of a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20B32B7/02C09K19/54G02B1/10G02B5/30G02F1/13G02F1/361H01S3/17
CPCG02B5/3016C09K19/544G02F1/361B82Y30/00C09K19/54G02F1/3615G02B5/201C09K2323/00G02B5/30
Inventor B·范
Owner REVEO
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