4″ Display

The 4.0” Lectum display is an active-matrix EPD with Epson S1D13541 EPD controller and drivers supporting 400 x 240 pixels.

This display is particularly suitable for smartphone and logistics applications.

  • Organic TFT active matrix incorporating industry leading, bi-stable electrophoretic display technology
  • Two chip solution on single COF (chip-on-film); can be folded behind the display EPD controller with source driver and display RAM Gate driver
  • Host communication via SPI interface
  • Thin, formable, robust, lightweight
  • Ultra-wide viewing angle
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    Ultra-low power – no continuous refresh cycles required
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    External EPD power management required
  • Evaluation kits available for driving images, consisting of processor board and interface board HBZ6 with power management IC and passives
  • Can be combined with third-party touch solutions
    Resolution 400 x 240
    Active area 88.0 x 52.8 mm (4.0″ diagonal)
    Pixel density 115 ppi
    Bendability typical 50 mm radius (except chip area)
    Gray levels up to 16
    Refresh rate < 900 ms (16 gray-level) – faster for mono updates
    Surface anti-glare / UV protection /hard-coat 2H
    Weight 4.1 g
    Thickness 650 µm
    EPD controller Epson S1D13541
    Operating conditions 0°C to 50°C | 15 %rH to 85 %rH
    Storage conditions -25°C to 50°C | 15 %rH to 85 %rH
    Display identifier for evaluation kits S040_T1.1

    Get all technical information for the 4.0″ display

    Find out more about all available evaluation kits for the 4.0″ 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:
    1.1”, 1.38”, 2.1″ and 3.1″


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

    Custom Design