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전자종이 초 저 전력 소모량 실현 방법

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전자종이 초 저 전력 소모량 실현 방법

  • 분류 :뉴스센터
  • 작성자 :
  • 출처 :
  • 등록시간 :2022-02-11
  • 방문수 :192

【개요 설명】

전자종이 초 저 전력 소모량 실현 방법

【개요 설명】

  • 분류 :뉴스센터
  • 작성자 :
  • 출처 :
  • 등록시간 :2022-02-11
  • 방문수 :192
상세정보

E-paper display modules have one outstanding feature: Once an image is written to an ePaper module, the image will stay there indefinitely, even if no power at all is supplied to the ePaper module.

How does E-paper work?

 

It is done with one of the first widely produced examples of nanotechnology. Inside the E-paper are very tiny charged and colored particles. The E-paper controller IC uses electric fields and clever algorithms to migrate the correct color particles to the front of the display, which creates an image. The particles and display structure are designed in such a way that once the particles have migrated to the desired position, they will stay there indefinitely–without any power applied.

There is some power used when the image is written–but that power only needs to be supplied during the refresh cycle. As soon as the refresh cycle is complete, you can completely remove power from the module.

 

For the lowest possible E-paper average power consumption:

 

  • Make your updates as few as possible and as far apart as can meet your needs.
  • Choose an E-paper that updates quickly (typically monochrome–color and grey scale have longer refresh times)
  • Be sure to remove all power from the E-paper module.
    One method would be to use a FET to disconnect the power pin completely while driving all the I/O lines to ground.
    Another method would be to send the appropriate sleep commands to the E-paper module's controller. 

What are some limitations of E-paper?

 

  • The biggest limitation of E-paper is the refresh time. This can vary from less than 1/10 second for partial-refresh monochrome E-paper modules to up to 20 seconds for color E-paper. During the refresh, the display typically flickers which can be distracting.
  • E-paper colors are limited, currently, there are monochrome(black/white), monochrome greyscale, and red/black/white and yellow/black/white. There are not any full-color embedded E-paper modules currently available.
  • E-paper modules require a simple voltage boost power supply circuit. For larger production, you will want to design this circuit onto your PCB. 

 

Is E-paper right for your project?

 

If your application can benefit from super low power, and your display data does not change frequently, a E-paper module from Good Display may be a fantastic solution to your display requirement. Any questions, just feel free to contact us!

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