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The different types of E ink imaging film

E ink film typeAliasColorsOperating
Aurora MbV231black, white
0°C to +50°C-20°C to +60°COur most subscribed display platform.
Suitable for most indoor operating conditions.
Support partial updates.
Aurora -25V430black, white
-25°C to +30°C-25°C to +60°CSuitable for freezing operating conditions.
Spectra RedR2.0black, white, red
0°C to +40°C-20°C to +60°C3-colors pigments inside.
Taking longer time to complete a refresh.

How to make your selection?

–Refresh cycle

  • Note that EPDs are suitable for refresh cycles (global update, full screen update) from tens of seconds to minutes.
  • Fast update rate (partial update – few hundred milliseconds) is feasible but please share your requirements with us for further support.
  • An EPD is more suitable for applications where a static image is maintained without electricity and doesn’t need to be refreshed frequently.

–Temperature & colors

  • Determine whether the operating temperature or color is the primary requirement for your product or use case.
  • If having red as one of the EPD colors is a primary requirement, note that Spectra EPDs cannot be operated at sub-zero temperatures.
  • If you need your product to operate under 0℃, the Aurora -25 EPD (black and white) will be the only suitable EPD.
  • We recommend selecting Aurora Mb if it is not essential that you have a three-color display.


Driver comparison of iTC and eTC

Driver type
iTC (internal timing controller)
eTC (external timing controller)
EPD with host board
EPD with host board
Waveform location
iTC waveform
eTC waveform
Driving waveformEmbedded in driver IC (CoG)Controlled by MCU
Customization / Design flexibility
Design-in effortEasierNormal
Power consumptionNormalLower

  • The driving waveforms (LUTs, lookup tables) have been pre-programmed in the driver IC. Developers just need to send image data and update command to complete the screen refresh.

  • If developers need special support to change the waveforms, extra LUTs can be sent externally.

  • Following our driving guide, developers can fully control the driving flow and stage from the MCU.

  • Developers need to send converted image data at each specific stage.

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