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Polymer dispersed crystal liquid film driving method and direct-current power source driving device

A technology of dispersed liquid crystal and DC power supply, applied in the direction of instruments, static indicators, etc., can solve the problems of inconvenience of use and portability, and achieve the effects of high safety, good optical performance and convenient use.

Inactive Publication Date: 2014-09-10
北京众智同辉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The work of PDLC film and its derivatives needs to be driven by voltage. In the prior art, PDLC film and its derivatives are driven by a dedicated supporting power supply. Due to the complexity of the circuit and the variety of power supply components, the power supply often has a large size and weight. It brings great inconvenience to use and carry. At the same time, ordinary power sources or batteries cannot be directly used to drive PDLC films and their derivatives due to reasons such as voltage, frequency, and waveform. To solve the above problems, it is necessary to provide a polymer dispersion Driving method and direct current power supply driving device for liquid crystal film

Method used

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  • Polymer dispersed crystal liquid film driving method and direct-current power source driving device
  • Polymer dispersed crystal liquid film driving method and direct-current power source driving device
  • Polymer dispersed crystal liquid film driving method and direct-current power source driving device

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Embodiment 1

[0023] see figure 1 , figure 2 , image 3 , the driving method of the polymer-dispersed liquid crystal film of the present invention has a driving circuit electrically connected to two input electrodes of the polymer-dispersed liquid crystal film, and the driving circuit is applied on the polymer-dispersed liquid crystal film The drive voltage is a rectangular wave voltage that alternates between positive and negative, and the drive voltage quickly crosses zero and does not contain a DC component; the leading edge of the positive half-wave drive voltage output by the drive circuit is delayed by 1-10 microseconds, and the The leading edge of the negative half-wave driving voltage output by the driving circuit is delayed by 1-10 microseconds; the driving circuit includes a waveform signal generating circuit, a delay circuit, a driving stage and a switching circuit, and the driving circuit is electrically connected to a DC power supply circuit . In this embodiment, the prefer...

Embodiment 2

[0029] see figure 1 The DC power drive device of the polymer dispersed liquid crystal film of the present invention includes a DC power circuit 1, a boost circuit 2 and a drive circuit 3; the boost circuit includes a low voltage output circuit 201 and a high voltage output circuit 202; The drive circuit includes a waveform signal generation circuit 301, a delay circuit 302, a driver stage 303 and a switch circuit 304; the output terminals of the DC power supply circuit are electrically connected to the input terminals of the low voltage output circuit and the high voltage output circuit respectively, and the low voltage output circuit The output end of the voltage output circuit is electrically connected to the waveform signal generating circuit, the delay circuit, and the driver stage respectively, the output end of the high voltage output circuit is electrically connected to the switch circuit, and the output end of the waveform signal generating circuit is connected to the ...

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Abstract

The invention relates to a polymer dispersed crystal liquid film driving method. The polymer dispersed crystal liquid film driving method is characterized in that a driving circuit is electrically connected with two input electrodes of a polymer dispersed crystal liquid film, driving voltage applied on the polymer dispersed crystal liquid film by the driving circuit is rectangular wave voltage changing positively and negatively alternatively; the driving voltage quickly passes zero and is free of direct-current component; and leading edge time delay of positive half-wave driving voltage outputted by the driving circuit is 1-10 microseconds, and leading edge time delay of negative half-wave driving voltage outputted by the driving circuit is 1-10 microseconds. The driving circuit comprises a waveform signal generating circuit, a time delay circuit, a driving level and a switch circuit, and is electrically connected with a direct-current power source circuit. By the polymer dispersed crystal liquid film driving method, low power consumption driving is realized, and energy is saved. A power supply source can be a battery, and can be used by replacing the battery or recharging.

Description

technical field [0001] The present invention relates to a driving method of a polymer-dispersed liquid crystal film and a DC power supply driving device. The driving voltage applied by the driving circuit of the present invention to the polymer-dispersed liquid crystal film is a rectangular wave voltage that alternates between positive and negative. The leading edge of the positive half-wave driving voltage output by the driving circuit is delayed by 1-10 microseconds, and the leading edge of the negative half-wave driving voltage output by the driving circuit is delayed by 1-10 microseconds. Background technique [0002] Polymer dispersed liquid crystal (PDLC for short) film is an emerging electro-optic film material, which has special electro-optic properties and is widely used to prepare dimming glass, magic glass, and electroluminescent liquid crystal atomized glass. , Smart Glass, electro-optic switches, gratings and their derivatives, etc. The work of PDLC film and it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
Inventor 张玮沈健宋芳苹张晋张维平赵勤
Owner 北京众智同辉科技有限公司
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