Flexible liquid crystal thin film and preparation method thereof

A flexible liquid crystal and thin film technology, applied in the field of liquid crystal, can solve the problems of time-consuming and laborious, difficult to control the thickness of the film, complicated printing and coating operation process, etc., and achieve the effect of full color of the film, lower control voltage and simple preparation process

Inactive Publication Date: 2012-08-01
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, in the microcapsule preparation process, it is difficult to control the particle size of the microcapsule particles uniformly; the emulsion is not stable enough; the printing and coating operation process is complicated, and the film thickness is not easy to control; and the preparation process also involves processes such as solvent volatilization and drying. Time-consuming

Method used

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  • Flexible liquid crystal thin film and preparation method thereof
  • Flexible liquid crystal thin film and preparation method thereof
  • Flexible liquid crystal thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] At 5×10cm 2 The square resistance is 200 / □Spin coating a layer of 15 on ITO-PET film m-thick positive photoresist, through the mask, with a wavelength of 220nm and an irradiation intensity of 1200μw / cm 2 The UV curing instrument is exposed for more than 15 minutes to polymerize the photoresist in the exposed part. Wash the polymerized photoresist with a developer solution and clean it with deionized water. Place the conductive film in an etching solution that is uniformly mixed with 10ml of 37% concentrated hydrochloric acid and 10ml of deionized water, and rinse the residual hydrochloric acid with deionized water. The ITO without photoresist protection is corroded to obtain The upper transparent electrode layer with display pattern.

[0021] The 0.1g particle size is 3 m SiO 2 The spacer was added to 4.9g of UV curing glue NOA65 solution, and stirred for 20 minutes under mechanical stirring at 500 rpm to obtain a coating solution with a spacer mass fract...

Embodiment 2

[0025] The difference from Example 1 is that 800 / □ ITO-PET film, the particle size of 0.1g is 6 m SiO 2 The spacer was added to 3.2g of UV-curable CBU226 solution to obtain a coating solution with a spacer mass fraction of 3%; the reuse specification was 6 The m screw is coated, the liquid crystal cell is cured at 60°C, and the liquid crystal cell is uniformly poured into the liquid crystal under a vacuum with a pressure of 3 MPa; the others are the same as in Example 1.

Embodiment 3

[0027] The difference from Example 1 is that 1500 / □ ITO-PET film, the particle size of 0.1g is 10 m SiO 2 The spacer was added to 2.4g of UV-curable CBU226 solution to obtain a coating solution with a spacer mass fraction of 4%; the reuse specification was 10 The m screw is coated, the liquid crystal cell is cured at 70°C, and the liquid crystal cell is uniformly poured into the liquid crystal under a vacuum with a pressure of 6 MPa; the others are the same as in Example 1.

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Abstract

The invention discloses a flexible liquid crystal thin film and a preparation method thereof and belongs to the technical field of liquid crystal. The flexible liquid crystal thin film is divided into five layers, wherein the lowest layer is a black light absorption coating; and a lower transparent electrode layer, an interface layer, a liquid crystal layer and an upper transparent electrode layer are arranged on the black light absorption coating in turn. The preparation method comprises the following steps of: preparing the upper transparent electrode layer with display patterns, preparing the interface layer, preparing a liquid crystal box, filling liquid crystal and preparing the liquid crystal thin film. The invention has the advantages that: the preparation process is simple and is suitable for large-area display application; by the prepared flexible liquid crystal thin film, the bistable control of cholesteric liquid crystal is realized by utilizing an interface stabilization mode, the control voltage is reduced, and the film has rich colors; and moreover, a conductive electrode is treated by an etching technology, and a flexible pattern liquid crystal thin film is prepared.

Description

technical field [0001] The invention relates to a flexible liquid crystal film and a preparation method thereof, belonging to the technical field of liquid crystals. Background technique [0002] Due to its lightness, thinness, flexibility and impact resistance, permanent display devices are especially suitable for mobile phones, personal digital assistants (PDAs), notebook computers, e-books, electronic posters, car dashboards, RF identification systems, sensors, etc. . Utilizing the flexible and bendable characteristics makes the engineering design not limited to planarization, and can realize diversified appearance display modes. At present, there are several ways to realize flexible display, such as organic electroluminescent display, electrophoretic display, and liquid crystal display. Among them, the reflective cholesteric liquid crystal display adopts Bragg selective reflection and bistable characteristics of cholesteric liquid crystal, which makes it have the adva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B7/12G02F1/1341
Inventor 周雪琴刘东志李巍王晓丽
Owner TIANJIN UNIV
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