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Display, polymer dispersion liquid crystal film and manufacturing method and driving method of display

A technology for dispersing liquid crystals and manufacturing methods, applied in chemical instruments and methods, liquid crystal materials, instruments, etc., can solve the problem that PDLC films cannot be widely used in the field of liquid crystal display, etc., to overcome the slow response speed, expand the application range, and accelerate the response speed. Effect

Active Publication Date: 2012-05-23
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the PDLC film improved by the above method still cannot be widely used in the liquid crystal display field.

Method used

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  • Display, polymer dispersion liquid crystal film and manufacturing method and driving method of display
  • Display, polymer dispersion liquid crystal film and manufacturing method and driving method of display
  • Display, polymer dispersion liquid crystal film and manufacturing method and driving method of display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Figure 1A The schematic structural diagram of the PDLC film provided by Embodiment 1 of the present invention, such as Figure 1A As shown, the PDLC film includes: a polymer 101 and a dual-frequency liquid crystal 102 distributed in the polymer 101 . Wherein, in the PDLC film, the refractive index of the dual-frequency liquid crystal 102 along the long-axis direction matches that of the polymer 101, or the refractive index of the dual-frequency liquid crystal 102 along the short-axis direction matches that of the polymer 101. Wherein, the "matching" in each embodiment of the present invention refers to being identical or approximately identical. Wherein, the polymer 101 is an optically isotropic substance produced by a photopolymerization reaction of a photopolymerizable matrix and the like. Dual-frequency liquid crystal 102 refers to a special liquid crystal material whose electro-optical characteristics are related to frequency. The dual-frequency liquid crystal 102...

Embodiment 2

[0048] image 3 It is a flowchart of a method for manufacturing a PDLC film provided in Embodiment 2 of the present invention. Such as image 3 As shown, the manufacturing method of the PDLC film of the present embodiment comprises:

[0049] Step 301, uniformly mixing the dual-frequency liquid crystal, the photopolymerizable matrix, the nano-beads and the photoinitiator to form a uniform mixture;

[0050] Step 302, rolling the homogeneous mixture between the first film layer and the second film layer;

[0051] Step 303 , irradiating the rolled homogeneous mixture under ultraviolet light to form the PDLC film.

[0052] The method for manufacturing the PDLC film in this embodiment can be used to manufacture the PDLC film provided by the present invention. The technical solution of this embodiment adopts the PDLC film formed by uniformly mixing dual-frequency liquid crystals with photopolymerizable substrates, rolling and ultraviolet light irradiation, and utilizes the differ...

Embodiment 3

[0059] Figure 4 The process flow of the method for driving a PDLC film provided in Embodiment 3 of the present invention. Such as Figure 4 shown, including:

[0060] Step 401, using a voltage of a first frequency to drive the PDLC film, so that the PDLC film assumes a transmissive state;

[0061] Step 402 , using a voltage of a second frequency to drive the PDLC film in the transmission state, so that the PDLC film changes from the transmission state to the scattering state.

[0062]Wherein, the voltage of the first frequency and the voltage of the second frequency in this embodiment may be determined according to the characteristics of the dual-frequency liquid crystal in the PDLC film used. Specifically, in combination with the PDLC film provided by the above-mentioned embodiments of the present invention, when the refractive index of the dual-frequency liquid crystal in the PDLC film along the long axis direction matches the refractive index of the polymer in the PDLC ...

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Abstract

The invention discloses a display, a polymer dispersion liquid crystal film and a manufacturing method and a driving method of the display. The polymer dispersion liquid crystal film comprises a polymer and a double-frequency liquid crystal dispersed into the polymer, wherein the refraction rate of the double-frequency liquid crystal along a long axis direction or a short axis direction is matched with the refraction rate of the polymer. In the technical scheme of the invention, the polymer dispersion liquid crystal film comprises the double-frequency liquid crystal, and is driven by using a double-frequency voltage, so that the response speed of the polymer dispersion liquid film can be increased, the switching speed of the polymer dispersion liquid crystal film between a transmission state and a scattering state is increased, and the application range of the polymer dispersion liquid crystal film is expanded.

Description

technical field [0001] The invention relates to liquid crystal display technology, in particular to a display, a polymer dispersed liquid crystal film, a manufacturing method and a driving method thereof. Background technique [0002] Polymer Dispersed Liquid Crystal (referred to as: PDLC) film is a film material with excellent comprehensive properties obtained by dispersing liquid crystal in the form of droplets in polymer. Among them, polymer as a film material provides a stable network structure for liquid crystal droplets; liquid crystal molecules have strong optical anisotropy and dielectric anisotropy. Become a new type of light control film. It is a newly developed flat panel display device capable of displaying information. [0003] When the PDLC film is subjected to an external field (such as electric field, thermal field, etc.), it can exhibit two different optical states of transmission and scattering according to the external field conditions, and can switch be...

Claims

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Application Information

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IPC IPC(8): C09K19/52C08J3/28B29C69/02G02F1/1334
Inventor 李文波武延兵王刚王立波
Owner BOE TECH GRP CO LTD
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