Display platform with gate and source drivers

For large Lectum® displays we have developed a scalable platform
with multiple electrophoretic display (EPD) driver chips.

All displays developed on this platform have the following features:

  • Resolution and size of platform can be scaled by multiple driver chips
    • m x gate driver
    • n x source driver
  • external EPD controller as well as EPD power management required, reference design available

We currently offer three reference displays for the drivers-only platform: 4.7″, 10.7″ and 15.4″.

Reference display – 4.7''

The 4.7” Lectum display is an active-matrix EPD with gate and source drivers supporting 800 x 450 pixels.

This display is particularly suitable for smartphone and logistics applications.

Reference display – 4.7''

The 4.7” Lectum display is an active-matrix EPD with gate and source drivers supporting 800 x 450 pixels.

This display is particularly suitable for smartphone and logistics applications.

Reference design 4.7″

Resolution 800 x 450
Active area 103.68 x 58.32 mm (4.7″ diagonal)
Pixel density 196 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 6 g (depending on final configuration)
Thickness 670 µm
EPD controller external
Evaluation kits MSP430 kit
(M_T430E + C_RV1_H1)
or
Beaglebone white kit
(M_BBW_R2 + C_RV1_H1)
or
Raspberry 3 kit
(M_RP3_A1 + C_RV1_H1)
Operating conditions 0°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 COP (chip-on-plastic) and on COF (chip-on-film); can be folded behind the display
  • Thin, formable, robust, lightweight
  • Ultra-wide viewing angle
  • null
    Ultra-low power – no continuous refresh cycles required
  • null
    External EPD controller as well as power management required
  • Can be combined with third-party touch solutions
  • Evaluation kits available for driving images

Reference display – 10.7''

This display is particularly suitable for e-book and signage applications.

The 10.7” Lectum display is an active-matrix EPD with gate and source drivers supporting 1280 x 960 pixels.

Reference display – 10.7''

This display is particularly suitable for e-book and signage applications.

The 10.7” Lectum display is an active-matrix EPD with gate and source drivers supporting 1280 x 960 pixels.

Overview

Reference design 10.7″

Resolution 1280 x 960
Active area 217.6 x 163.2 mm (10.7″ diagonal)
Pixel density 150 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 37 g (depending on final configuration)
Thickness 650 µm
EPD controller external
Evaluation kits MSP430 kit
(M_T430E + C_RV1_S7.2/S7.3)
or
Beaglebone white kit
(M_BBW_R2 + C_RV1_S7.2/S7.3)
or
Raspberry 3 kit
(M_RP3_A1 + C_RV1_S7.2/S7.3)
or
i.MX5 kit
(K_F5_HBZ3.1_S7.2/S7.3)
or
i.MX6 kit
(K_F6_HBZ3.1_S7.2/S7.2)
Operating conditions 0°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 COP (chip-on-plastic) and on COF (chip-on-film); can be folded behind the display
  • Thin, formable, robust, lightweight
  • Ultra-wide viewing angle
  • null
    Ultra-low power – no continuous refresh cycles required
  • null
    External EPD controller as well as power management required
  • Can be combined with third-party touch solutions
  • Evaluation kits available for driving images

Reference display – 15.4''

The 15.4” Lectum display is an active-matrix EPD with gate and source drivers supporting 1920 x 1280 pixels. It is a 2 x 10.7″ joint together design with one single encapsulation concept..

This display is particularly suitable for signage and large screen applications.

Reference display – 15.4''

The 15.4” Lectum display is an active-matrix EPD with gate and source drivers supporting 1920 x 1280 pixels. It is a 2 x 10.7″ joint together design with one single encapsulation concept..

This display is particularly suitable for signage and large screen applications.

Reference design 15.4″

Resolution 1920 x 1280
Active area 326.4 (+1.0 mm gap) x 217.6 mm (15.4″ diagonal)
Pixel density 150 ppi
Bendability Bendability is limited due to 2-displays joint together design. However, a certain flexibility or conformal bending is possible depending on application.
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 92 g
Thickness 730 µm
EPD controller external
Evaluation kit i.MX5 kit
(K_F5_HBZ3.1_S7.2/S7.3 + C_P2)
or
i.MX6 kit
(K_F6_HBZ3.1_S7.2/S7.2 + C_P2)
Operating conditions 0°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
2-up tiled assembly for double size active area (compared with 10.7″ display)
Multi-chip solution on double COF (chip-on-film); can be folded behind the display
Thin, formable, robust, lightweight
Ultra-wide viewing angle
null
Ultra-low power – no continuous refresh cycles required
null
External EPD controller as well as power management required
Can be combined with third-party touch solutions
Evaluation kits available for driving images

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 a 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.

RV1

(C_RV1_H1)
(C_RV1_S7.2/S7.3)

In combination with the MSP430 MCU, a RV1 board with display specific electronics is required. This interface board contains an EPSON S1D13524 EPD controller, a power management IC (PMIC), a DRAM and passives, because the related displays only come with integrated gate and source drivers.

The connector H1 is compatible to the 4.7″ display.
The connector S7.2 / S7.3 is compatible to the 10.7″ display.

Images not to scale

Technical parameters

Evaluation kit code (4.7″) M_T430E + C_RV1_H1
Evaluation kit code (10.7″) M_T430E + C_RV1_S7.2/S7.3
Compatible displays 4.7″ and 10.7″
Display EPD controller n/a
External EPD controller Epson S1D13524
Reference design board RV1, containing EPD controller, power management & RAM
MCU board Parrot (Plastic Logic design)
MCU processor MSP430F5438A
MCU operating system None (microcontroller unit)
MCU data exchange JTAG programmer/SD
MCU adapter board R2 (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.

RV1

(C_RV1_H1)
(C_RV1_S7.2/S7.3)

In combination with the Beaglebone MCU, a RV1 board with display specific electronics is required. This interface board contains an EPSON S1D13524 EPD controller, a power management IC (PMIC), a DRAM and passives, because the related displays only come with integrated gate and source drivers.

 

The connector H1 is compatible to the 4.7″ display.
The connector S7.2 / S7.3 is compatible to the 10.7″ display.

Images not to scale

Technical parameters

Evaluation kit code (4.7″) M_BBW_R2 + C_RV1_H1
Evaluation kit code (10.7″) M_BBW_R2 + C_RV1_S7.2/S7.3
Compatible displays 4.7″ and 10.7″
Display EPD controller n/a
External EPD controller Epson S1D13524
Reference design board RV1, containing EPD controller, power management & RAM
MCU board Beaglebone white
MCU processor ARM Cortex-A8
MCU operating system Linux
MCU data exchange USB / Ethernet / SD
MCU adapter board (cape) R2

Raspberry Pi 3

MCU Raspberry Pi 3 (M_RP3_A1)

The Raspberry Pi board includes an ARM Cortex-A8 MCU.

 

The ARM microcontroller software runs on Linux. The hat A1 is provided as interface board.

RV1

(C_RV1_H1)
(C_RV1_S7.2/S7.3)

In combination with the Raspberry Pi, a RV1 board with display specific electronics is required. This interface board contains an EPSON S1D13524 EPD controller, a power management IC (PMIC), a DRAM and passives, because the related displays only come with integrated gate and source drivers.

 

The connector H1 is compatible to the 4.7″ display.
The connector S7.2 / S7.3 is compatible to the 10.7″ display.

Images not to scale

Technical parameters

Evaluation kit code (4.7″) M_RP3_A1 + C_RV1_H1
Evaluation kit code (10.7″) M_RP3_A1 + C_RV1_S7.2/S7.3
Compatible displays 4.7″ and 10.7″
Display EPD controller n/a
External EPD controller Epson S1D13524
Reference design board RV1, containing EPD controller, power management & RAM
MCU board Beaglebone white
MCU processor ARM Cortex-A8
MCU operating system Linux
MCU data exchange USB / Ethernet / SD
MCU adapter board (hat) A1

Freescale i.MX5/6

Freescale i.MX5/i.MX6

(K_F5_HBZ3.1_S7.2/S7.3)
(K_F6_HBZ3.1_S7.2/S7.3)

This complete evaluation kit includes a FREESCALE i.MX5 board, or alternatively a FREESCALE i.MX6 board. The adapter board HBZ3.1 designed by Plastic Logic provides the EPD specific power management and display interface. A separate EPD controller is not required since FREESCALE provides a SoC combining the MCU and the EPD controller.

 

The FREESCALE kits run on Linux, which contains the necessary frame buffer drivers. Additional scripting is possible.

The connector S7.2 / S7.3 is compatible to the 10.7″ display.

Images not to scale

Technical parameters

Evaluation kit code (i.MX5) K_F5_HBZ3.1_S7.2/S7.3 (+ C_P2 for 2 x 10.7″ / 1 x 15.4″)
Evaluation kit code (i.MX6) K_F6_HBZ3.1_S7.2/S7.3 (+ C_P2 for 2 x 10.7″ / 1 x 15.4″)
Compatible displays 10.7” / 15.4″
Display EPD controller n/a
External EPD controller Freescale i.MX5/i.MX6 on HBZ3. 1 with integrated EPD controller (plus power supply C_P2 for 15.4”)
Reference design board n/a
MCU processor Freescale i.MX5 / i.MX6
MCU operating system Linux
MCU data exchange USB / Ethernet / Serial
MCU adapter board HBZ3.1
Miscellaneous System-on-chip (integrated MCU and EPD); standard interface for system extensions; Linux framebuffer driver; software development kit; Additional power board C_P2 for 2 x 10.7″ / 1 x 15.4″ is required.

Sample pricing for drivers-only platform

4.7″ display $115*/each
10.7″ display $350*/each
15.4″ display $800*/each
M_T430E $250*/each
M_BBW_R2 $250*/each
M_RP2_A1 $250*/each
C_RV1_H1 $540*/each
C_RV1_S7.2/S7.3 $600*/each
K_F5-HBZ3-1_S7.2/S7.3 $1400*/each
K_F6-HBZ3-1_S7.2/S7.3 $1600*/each


* Pricing does not include shipping, customs or taxes

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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 sizes:
1.1″ and 1.38”
Epson

Platform

Reference display sizes:
4.0″ and 4.9”
Custom

Design

Drivers-only platform - 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.