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Liquid crystal medium, polarization separation film, and preparation method thereof

A polarization separation film and liquid crystal medium technology, applied in liquid crystal materials, polarizing elements, chemical instruments and methods, etc., can solve problems such as poor polarization separation effect, difficult orientation of liquid crystal polymers, and uneven optical properties of birefringent films. Good temperature adaptability, good optical anisotropy, and good polarization separation effect

Inactive Publication Date: 2019-05-03
JIANGSU JICUI INTELLIGENT LCD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has disadvantages such as difficult orientation of liquid crystal polymers, inhomogeneous optical properties of the formed birefringent film, and poor polarization separation effect.

Method used

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  • Liquid crystal medium, polarization separation film, and preparation method thereof
  • Liquid crystal medium, polarization separation film, and preparation method thereof
  • Liquid crystal medium, polarization separation film, and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0046] Such as figure 2 As shown, the preparation method of the polarization separation film includes the following steps: first, an alignment layer 30 is formed on the substrate 40, and the formation methods include rubbing alignment, photo-controlled alignment technology, oblique evaporation method, LB film technology, etc. The substrate 40 may include hard materials (such as optical glass), or flexible substrates (such as PET) and the like. The material of the alignment layer 30 may be polyimide. Next, a liquid crystal medium in a liquid crystal state is coated on the alignment layer 30 to form a birefringent layer 20 in a liquid crystal state. Then, the base layer 10 and the birefringent layer 20 in the liquid crystal state are laminated by means of a device having a laminating function. When laminating, the base layer 10 can be positioned above the birefringent layer 20, and the upper surface of the base layer 10 can be gradually pressurized, so that the surface of the...

Embodiment 1

[0050]

[0051] Among them, the Δn of the liquid crystal medium is 0.191, where n o It is 1.51, which is the n of common light guide plate materials (such as PMMA) p match. The clearing point temperature of the liquid crystal medium is 131°C, and its working temperature range as a birefringent layer medium is greater than the glass transition temperature of PET (70°C) and the glass transition temperature of PEN (120°C). The polarization contrast ratio of the polarization separation film is 6.5:1.

Embodiment 2

[0053]

[0054]

[0055] Among them, the Δn of the liquid crystal medium is 0.191. The polarization contrast ratio of the polarization separation film is 6:1.

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Abstract

The invention provides a liquid crystal medium which can be applied to a polarization separation film. The polarization separation film includes: a first component, selected from a group consisting ofat least one compound represented as the general formula (I); and optionally a second component, which is selected from a group consisting of at least one polymerization initiator. The invention alsoprovides the polarization separation film including the liquid crystal medium and a preparation method of same. The liquid crystal medium has large phase change temperature range and great optical anisotropism. The polarization separation film is great in temperature adaptability and polarization separation effect. The preparation method is simple in process and high in yield, is suitable for large-scale production. P1-R1-MG-R2-P2 (I).

Description

technical field [0001] The invention relates to a liquid crystal medium, in particular to a liquid crystal medium applicable to a polarization separation film. The present invention also relates to a polarization separation film comprising the liquid crystal medium and a preparation method thereof. Background technique [0002] As a passive light emitting device, liquid crystal display needs to rely on the backlight source on the back of the display screen to illuminate the screen. Due to the special structure and requirements of liquid crystal displays, the light that is effectively used is only light with a specific polarization direction, so for traditional backlights, the utilization rate of the final light intensity is only 5% of the original light intensity, and the light utilization rate is low. The power consumption is high, and it is easy to cause adverse effects such as heating and black screen of the display. [0003] To address these problems, one of the soluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/38G02B5/30
Inventor 丁宇鸣张宏伟赵辉游石枝余天石
Owner JIANGSU JICUI INTELLIGENT LCD TECH CO LTD
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