3.1″ Display

The 3.1″ Lectum display is a flexible active-matrix EPD with Ultrachip UC8156 single chip EPD controller, integrated drivers and power management. It supports 312 x 74 pixels.

This display is particularly suitable for smart cards, wearables and labels.

It is available as engineering samples and in volume, and can be ordered on request.

  • Organic TFT active matrix incorporating industry leading, bi-stable electrophoretic display technology
  • Integrated display driver with controller and PMIC based on COP (chip-on-plastic) backend technology
  • Host communication via SPI interface
  • On-chip display RAM and waveform memory available
  • I2C interface for reading external temperature sensor
  • Thin, formable, robust, lightweight
  • Ultra-wide viewing angle
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    Ultra-low power – no continuous refresh cycles required
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    Single voltage power supply (1.7… 3.6V), on-chip regulator control for generating driving voltages (external booster circuit required)
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    Low current deep sleep mode
  • Can be combined with third-party touch solutions
  • Evaluation kit available for driving images, consisting of processor board and interface board HBZ9 with passives
    Resolution312 x 74
    Active area75.5 x 17.91 mm (3.1″ diagonal)
    Pixel density105 ppi
    Bendabilitytypical 30 mm radius (except chip area)
    Gray levelsup to four
    Refresh rate< 900 ms (4 gray-level) – faster for mono updates
    Surfaceanti-glare / UV protection /hard-coat 2H
    Weight2.2 g
    Thickness460 µm
    EPD controllerUltrachip 8156
    Operating conditions0°C to 40°C | 15 %rH to 85 %rH
    Storage conditions-25°C to 50°C | 15 %rH to 85 %rH
    Display identifier for evaluation kitsS031_T1.1

    Get all technical information for the 3.1″ display

    Find out more about all available evaluation kits for the 3.1″ display

    Need a different display size?

    We have developed a range of display platforms based on different EPD controllers required to drive the respective Lectum design. Reference displays and evaluation kits, including software, are available. Please choose a platform or select custom design to discover how we can best support your display needs.

    Reference display sizes:
    4.0” and 4.9”


    Reference display size:
    4.7″, 10.7” and 15.4″

    Custom Design