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A method for eliminating residual image on the edge of electrophoretic electronic paper

An electronic paper and edge technology, applied in static indicators, instruments, etc., can solve the problems of difficult to unify particle distribution, easy to form ghost images, difficult to display screen, etc., achieve uniform particle distribution, eliminate edge afterimage, drive voltage waveform optimized effect

Active Publication Date: 2020-03-31
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST +1
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  • Claims
  • Application Information

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Problems solved by technology

However, the problem of image sticking at the edge of electrophoretic electronic paper has been difficult to eliminate. The main reason is that the particles are subjected to complex forces in the microcapsule dispersant, which makes the particle distribution difficult to uniform, making it difficult for the electrophoretic electronic paper display to complete accurate grayscale in a short time. display, and if the state of the short-term driving waveform design is not uniform, it is easy to form ghost images

Method used

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  • A method for eliminating residual image on the edge of electrophoretic electronic paper
  • A method for eliminating residual image on the edge of electrophoretic electronic paper
  • A method for eliminating residual image on the edge of electrophoretic electronic paper

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Embodiment Construction

[0019] refer to Figure 1 to Figure 3 , a method for eliminating residual image on the edge of electrophoretic electronic paper, comprising the following steps:

[0020] (1) Define the part of the area where the image is displayed on the electronic paper display screen as area A, and define the part of the area as the background of the image on the electronic paper display screen as area B.

[0021] (2) Applying a voltage for activating the image on region A and region B specifically includes: applying a positive driving voltage lasting 4 unit times on region A; applying a positive driving voltage lasting 1 unit time on region B Positive drive voltage, and then apply a negative drive voltage for 1 unit time.

[0022] (3) Apply a voltage to erase the image and generate a dark gray background on the area A and area B, specifically comprising: applying a positive driving voltage that lasts for 3 unit times on the area A, and then applying a voltage that lasts for 2 Negative dri...

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Abstract

A method for eliminating an afterimage in the margins of electrophoretic electronic paper, comprising the following steps: first, defining the partial region of an electronic paper display screen which displays an image as region A, and defining the region of the electronic paper display screen which serves as the background of the image as region B; next, applying a voltage which activates the image in region A and region B; finally, applying a voltage which wipes the image and produces a dark gray background in region A and region B. By means of applying different voltages so as to optimize drive voltage waves, the stress of granules in a microcapsule dispersant is balanced, ensuring the even distribution of granules, and eliminating the afterimage in the margins of the electronic paper without changing the device structure or material.

Description

technical field [0001] The invention relates to the technical field of electrophoretic display, in particular to a method for eliminating residual image at the edge of electrophoretic electronic paper. Background technique [0002] Because electrophoretic electronic paper has good bistable characteristics, and is energy-saving and environmentally friendly, it has been widely used in e-book readers, electronic tags, electronic billboards, etc. During static display, the electrophoretic electronic paper display consumes almost no power, which is A display technology with energy saving and environmental protection features. However, the problem of image sticking on the edge of electrophoretic electronic paper has been difficult to eliminate. The main reason is that the particles are subjected to complex forces in the microcapsule dispersant, which makes the particle distribution difficult to uniform, making it difficult for the electrophoretic electronic paper display to comple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/344G09G2320/0257
Inventor 易子川何文耀水玲玲白鹏飞周国富
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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