Display Platform with Epson S1D13541

For Lectum® displays with a larger number of pixels, we have developed a platform based on the Epson S1D13541 for electrophoretic displays (EPD).

All displays developed on this platform have the following features:

  • two chip solution on COF or COP backend technology consisting of
    - EPD controller Epson S1D13541 with 480 lines source driver and display RAM
    - a gate driver supporting up to 800 lines
  • host communication via SPI interface
  • external EPD power management required, reference design available

We currently offer two reference displays for the Epson platform: 4.0" and 4.9".

Reference display – 4.0''

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

Display platform with ultrachip

Overview 

Reference design 4.0"
Resolution400 x 200reference design
Active area88.0 x 52.8 mm (4.0" diagonal)
Pixel density115 ppi
Bendabilitytypical 50 mm radius (except chip area)
Gray levelsup to 16
Refresh rate < 900 ms (16 gray-level) - faster for mono updates
Surfaceanti-glare / UV protection /

hard-coat 2H

Weight4.1 g
Thickness650 µm
EPD controllerEpson S1D13541
Evaluation kitPLDEK_BN-R2-HBZ6 or PLDEK_T430-R2-HBZ6
Operating conditions0°C to 50°C | 15 %rH to 85 %rH
Storage conditions-25°C to 50°C | 15 %rH to 85 %rH

Key features 

  • 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
  • Ultra-low power – no continuous refresh cycles required
  • External EPD power management required
  • Can be combined with third-party touch solutions
  • Evaluation kits available for driving images, consisting of processor board and interface board HBZ6 with power management IC and passives

Reference display – 4.9''

This is the second of the two reference displays for the Epson platform.

Display platform with ultrachip

The 4.9” Lectum display is an active-matrix EPD with Epson S1D13541 EPD controller and drivers supporting 720 x 120 pixels.

This display is particularly suitable for wearable applications.

Overview 

Reference design 4.9"
Resolution720 x 120reference design
Active area122.4 x 20.4 mm (4.9" diagonal)
Pixel density150 ppi
Bendabilitytypical 20 mm radius (except chip area)
Gray levelsup to 16
Refresh rate < 900 ms (16 gray-level) - faster for mono updates
Surfaceanti-glare / UV protection /

hard-coat 2H

Weight3 g
Thickness600 µm
EPD controllerEpson S1D13541
Evaluation kitPLDEK_BN-R2-HBZ7 or PLDEK_T430-HBZ7
Operating conditions0°C to 50°C | 15 %rH to 85 %rH
Storage conditions-25°C to 50°C | 15 %rH to 85 %rH

Key features 

  • 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
  • Ultra-low power – no continuous refresh cycles required
  • External EPD power management required
  • Can be combined with third-party touch solutions
  • Evaluation kits available for driving images, consisting of processor board and interface board HBZ7 with power management IC and passives

Evaluation Kits

We offer evaluation kits for all display platforms enabling customers
to evaluate our display technology both quickly and easily.

Lectum displays require a microcontroller board (M_) as well display specific hardware (C_).

For displays based on Epson platform,
Parrot MSP430 and Beaglebone white
MCU's are available.

 

Parrot MSP430

     

MCU Parrot MSP430
(M_T430E)

The Parrot MSP430 evaluation kit includes an MSP430 MCU on a Parrot processor board.

The MSP430 microcontroller software is based on C-code. Additional software packages or changes require a separate JTAG programmer.

HBZ6/7
(C_HBZ6)
(C_HBZ7)

In combination with the MSP430 MCU, a HBZ6 board (for 4" displays) or a HBZ7 board (for 4.9" displays) with display specific electronics is required. This interface board contains a power management IC (PMIC) and passives, because the related displays already include an EPSON S1D13541 with integrated gate and source drivers and an EPD controller.

Parrot MSP430 eval. kit (Epson platform)

Images not to scale

 

Technical parameters 

Evaluation kit code (4.0")M_T430E + C_HBZ6
Evaluation kit code (4.9")M_T430E + C_HBZ7
Compatible displays4.0" and 4.9"
Display EPD controllerEPSON S1D13541
External EPD controllern/a
Reference design boardHBZ6/7, containing power management & RAM
MCU boardParrot (Plastic Logic design)
MCU processorMSP430F5438A
MCU operating systemNone (microcontroller unit)
MCU data exchangeJTAG programmer/SD
MCU adapter boardR2 (optional)

 

Beaglebone white

     

MCU Beaglebone white (M_BBW_R2)

The Beaglebone white board includes an ARM Cortex-A8 MCU.

The ARM microcontroller software runs on Linux. The cape R2 is provided as interface board.

HBZ6/7
(C_HBZ6)
(C_HBZ7)

In combination with the MSP430 MCU, a HBZ6 board (for 4" displays) or a HBZ7 board (for 4.9" displays) with display specific electronics is required. This interface board contains a power management IC (PMIC) and passives, because the related displays already include an EPSON S1D13541 with integrated gate and source drivers and an EPD controller.

Beaglebone eval. kit (Epson platform)

Images not to scale

 

Technical parameters 

Evaluation kit code (4.0")M_BBW_R2 + C_HBZ6
Evaluation kit code (4.9")M_BBW_R2 + C_HBZ7
Compatible displays4.0" and 4.9"
Display EPD controllerEpson S1D13541
External EPD controllern/a
Reference design boardHBZ6/7, containing power management & RAM
MCU boardBeaglebone white
MCU processorARM Cortex-A8
MCU operating systemLinux
MCU data exchangeUSB / Ethernet / SD
MCU adapter board (cape)R2

 

Sample pricing for display platform with Epson S1D13541

  • 4.0" display $105*/each
  • 4.9" display $150*/each
  • M_T430E $100*/each
  • M_BBW_R2 $100*/each
  • C_HBZ6 $500*/each
  • C_HBZ7 $500*/each

* Pricing does not include shipping, customs or taxes

Order samples today

Send us your request for quotation, product inquiry or general questions.

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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.

Ultrachip
platform

Reference display size:
1.38''

Drivers-only
platform

Reference display size:
10.7''

Display platform with Epson - FAQ


Are Lectum displays available in color?

Lectum EPDs are not currently available in color. In the past, the company has demonstrated the ability to produce color displays, however, this process has not yet been industrialized for mass production.


Is video possible on Lectum EPDs?

Plastic Logic Germany has demonstrated animation (12 fps) on its EPDs. However, the faster update rate of the electrophoretic display media, which is required, results in a much higher power requirement than usual as well as a decrease in the display lifetime.


How much power do Lectum displays require?

Our Lectum displays are truly bi-stable meaning power is only needed for an update and not to show a static image. The energy required for a typical image update depends on the display size and driver chip setup; starting at just a few mJ per update for smaller displays, allowing battery-less NFC applications. For details please refer to the respective datasheet.


Why is the temperature range limited?

The temperature range for Lectum displays is determined by the electrophoretic display media used, which consists of microcapsules filled with a clear fluid. Low temperatures raise the viscosity of this fluid typically resulting in a slower response time for image updates. That is why the manufacturer states operation at a minimum of 0°C.


Why does Plastic Logic Germany offer different display platforms?

All EPD displays require an EPD controller and Lectum displays are no exception. Our reference displays use integrated hardware controllers. Different EPD controllers mainly differ in the maximum number of supported pixels as well as in cost. Depending on display requirements, we have selected some of the optimum EPD controllers and created a display platform based on each one. Discover more about the different platforms we offer here.

It is important to note that the number of pixels is not only dependent on the active display area but also on the pixel density (ppi).


Why is there more than one evaluation kit for some of the reference designs and not for others?

In order to simplify the integration of our Lectum displays, we have developed multiple evaluation kit options for certain platforms, such as µC-based and Linux-based. This covers a wide range of potential applications and makes life easier for designers.


What information is required in order to initiate a custom-design?

We require the following information from you in order to begin custom-design activities: display active area; pixel density; bezel size; location of driver electronics; COF/COP; overall module size including tolerances.


How do you decide which platform a custom design will be based on?

An initial analysis of the requested display active area and the pixel density (as well as a few other boundary conditions) informs the decision about the appropriate display platform. This happens as part of a milestone plan, which we have to developed, enabling a step-by-step development approach.


What is electrophoretic technology?

Electrophoretic technology refers to the process whereby thousands of microcapsules, containing (negatively charged) black and (positively charged) white pigments suspended in a clear fluid, are encapsulated in a plastic sheet.

When a charge (positive or negative) is applied, the corresponding particles move to the top of the microcapsule and the surface appears black or white in this specific area. When the charge is removed, the particles stay where they are. This is called bi-stability: where something can rest in either of two states.

In the case of an EPD, the text and/or images remain on the screen until the next update and the user can continue to view the content without the need for battery power. This means EPDs are inherently low-power and is one of the main differentiators to conventional backlit flat panel displays, where a constant power supply is required to maintain content.