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A liquid crystal handwriting device and its manufacturing method

A technology of liquid crystal handwriting and liquid crystal molecules, which is applied to a high-contrast, self-erasing handwriting device, can be used in the field of pressure writing, can solve problems such as low contrast, and achieve the effect of high contrast and low price.

Active Publication Date: 2020-06-09
SHENZHEN POLICRAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies of the prior art, to solve a liquid crystal handwriting device that can self-eliminate handwriting, to overcome the technical problems of low contrast and the need to use electricity to eliminate handwriting

Method used

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  • A liquid crystal handwriting device and its manufacturing method
  • A liquid crystal handwriting device and its manufacturing method
  • A liquid crystal handwriting device and its manufacturing method

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Embodiment Construction

[0037] See also shown in the figure, the present invention is described in further detail below in conjunction with embodiment:

[0038] refer to image 3 As shown, this liquid crystal handwriting device is composed of a first substrate 11 , a second substrate 12 , a cholesteric liquid crystal 13 , a first layer of polymer 14 , and a second layer of polymer 15 .

[0039] The first substrate 11 and the second substrate 12 are glass or plastic films.

[0040] The thickness of the cholesteric liquid crystal 13 and the second layer of polymer 15 is 3-10 microns.

[0041] The first substrate 11 is a transparent or frosted transparent substrate with a haze of 0-30%.

[0042] The second substrate 12 is a black or transparent substrate.

[0043] Further, the surfaces of the first substrate 11 and the second substrate 12 close to the bistable liquid crystal and the polymer can be plated with conductive electrodes, which can be used to manually eliminate handwriting by applying an el...

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Abstract

The invention provides a liquid crystal handwriting device. The liquid crystal handwriting device consists of a first substrate, a second substrate, cholesteric liquid crystals, a first layer of polymer and a second layer of polymer; the first substrate and the second substrate are glass or plastic films; the first substrate is a transparent or frosted transparent substrate; the second substrate is a black or transparent substrate. A manufacturing method of the liquid crystal handwriting device comprises the following steps: selecting base materials; preparing the cholesteric liquid crystals; preparing a mixture; coating a film; irradiating; inspecting. According to the liquid crystal handwriting device and the manufacturing method thereof, handwriting can be produced by sensing a pressure so as to realize a handwriting function; the handwriting is not required to be maintained by supplying power continuously, an additional electric field is not required to be applied, the handwriting can be eliminated automatically along with time; the liquid crystal handwriting device has the characteristics of high contrast ratio, low cost and the like, and has huge application space in the fields of spot fast memory training, enterprise and militarized private communication and the like.

Description

【Technical field】 [0001] The invention relates to a liquid crystal handwriting device, in particular to a handwriting device with high contrast, pressure writing and self-erasing handwriting. 【Background technique】 [0002] In the field of liquid crystal display, the handwriting function based on the bistable liquid crystal and the energy-saving feature that does not require continuous power supply to maintain the display have gradually been more and more widely used. [0003] Cholesteric liquid crystal materials for display are generally prepared by nematic liquid crystals and chiral agents, which have selective reflection of incident light. For multi-color low-power reflective liquid crystal displays, only when the optical activity of incident light and The cholesteric liquid crystal layer is consistent and the wavelength satisfies the Bragge formula before it is reflected, that is, the wavelength λ of the incident light is proportional to the pitch P and the average refra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/137
CPCG02F1/13718
Inventor 夏亮佘勇吴飞沈锐孙代伟
Owner SHENZHEN POLICRAL TECH CO LTD
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