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Quick response method of multistage gray scale electrophoresis electronic paper

A fast-response, electronic paper technology, used in instruments, static indicators, etc., to solve the problems of increased viscous resistance and large collision resistance of charge control agents

Inactive Publication Date: 2015-11-18
SHENZHEN GUOHUA OPTOELECTRONICS +2
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  • Abstract
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  • Application Information

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Problems solved by technology

However, when the particles are in the process of accelerating electrophoresis, the viscous resistance of the charge control agent on the particles will also increase, and at the same time, the collision resistance between the particles will also increase.

Method used

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  • Quick response method of multistage gray scale electrophoresis electronic paper
  • Quick response method of multistage gray scale electrophoresis electronic paper
  • Quick response method of multistage gray scale electrophoresis electronic paper

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no. 1 example

[0025] According to the first embodiment of the present invention, first, A: Raise the absolute value of the driving voltage to greater than 15V, and specifically configure the absolute value of the driving voltage through the following steps: 1. Obtain the voltage under positive or negative voltage driving waveforms of different lengths 2. Determine the absolute value of the driving voltage that can form a uniform multi-level gray scale display within the range of 20-25V. Specifically, a series of driving voltage waveforms of different lengths are firstly designed, in which there are only positive voltages or only negative voltages, and then these driving voltage waveforms are downloaded into the waveform lookup table, and the reflectivity measurement device Make observations. The TFT scanning frequency used in the experiment is 50HZ, so, in the process of designing the driving waveform, the time length of any stage must be an integer multiple of 20ms. In the present inventi...

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Abstract

The invention discloses a quick response method of multistage gray scale electrophoresis electronic paper. The method is used for driving multistage gray scale electrophoresis electronic paper. The method includes the steps: A, increasing the absolute value of a drive voltage to enable the drive voltage to be greater than 15V; B, applying a voltage waveform that is opposite to the electric property of an original image to erase the original image; C, applying a square wave voltage waveform with a duty ratio being 50% to activate electrophoresis particles; and D, applying a voltage waveform with a proper length to flash a new gray scale. Quick response of multistage gray scale electrophoresis electronic paper is achieved by properly increasing the drive voltage and changing different drive voltage waveform lengths. Concretely, in the step D, quick response of four-stage gray scale electrophoresis electronic paper is achieved by applying a positive voltage, and quick response of above-four-stage gray scale electrophoresis electronic paper is achieved by applying both a positive voltage and a negative voltage.

Description

technical field [0001] The invention relates to the technical field of electrophoretic display, in particular to a rapid response method for multi-level grayscale electrophoretic electronic paper. Background technique [0002] Electronic paper using electrophoretic display (EPD) technology has become a very important information display carrier, and has been widely used in e-book readers, electronic tags, electronic billboards and so on. It has good bistable characteristics and consumes almost no power during static display. It is a display technology with energy-saving and environmental protection characteristics. However, electrophoretic electronic paper also has a series of disadvantages, such as: slow response speed. These shortcomings seriously affect the display effect of electrophoretic electronic paper and restrict the scope of market application. The grayscale display of electrophoretic electronic paper is mainly driven by the voltage sequence applied to the pixel...

Claims

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Application Information

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IPC IPC(8): G09G3/34
CPCG09G3/34
Inventor 王利易子川周国富
Owner SHENZHEN GUOHUA OPTOELECTRONICS
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