E-Paper Display Modules Drive Batteryless RFID Tags

Pervasive Displays recently announced that Japan-based TOPPAN Printing Co. is using its low-power e-paper display (EPD) module in a batteryless RFID EPD tag. Operating off harvested RF energy, the new solution enables you to update a device’s EPD and RFID tag data at the same time with a smartphone or NFC reader/writer. Pervasive PDI004

Pervasive Displays’s low-power  Aurora Mb EPD modules require as little as 2 mA current during display update operations. This means display updates can be powered purely by harvested energy from NFC, RFID, solar, or thermal sources. Unlike traditional active matrix LCDs, e-paper technology is bistable, which means power isn’t required to maintain an image on the tag. A backlight is unncessary.

Source: Pervasive Displays

Wi-Fi-Enabled E-Paper

Pervasive Displays recently released a low-power, Wi-Fi-enabled e-paper display (EPD). The SimpleLink Wi-Fi CC3200 wireless MCU-based EPD is compatible with any of five different EPD panel sizes. You can control it wirelessly over the Internet with the MQTT protocol.pervasive WiFi

The low-power design comprises a SimpleLink Wi-Fi CC3200 LaunchPad development kit featuring n ARM Cortex-M4-based wireless microcontroller. The EPD sits on a BoosterPack-compatible plug-in board, which enables you to choose one of five e-paper display sizes from 1.44″ to 2.7″. An SPI enables communication between the microcontroller and the display.

Operating in the range of 2.3 to 3.6 VDC, the efficient EPD display can be updated via either an attached network or the Internet with a cloud-based application. Application firmware running permits control of the displayed image either via an embedded HTTP page or an MQTT client. With the HTTP client, you can choose from text and image format templates to be displayed and configured according to your needs.

The SimpleLink Wi-Fi CC3200 SDK contains an MQTT example along with the Pervasive Displays driver. The microcontroller uses a FreeRTOS environment with a thread for the SimpleLink functions and a thread for the display communication.

Source: Pervasive Displays

 

New Tricolor E-Paper Displays

Pervasive Displays recently launched the first two products in its Spectra family of three-pigment black, white and red e-paper displays (EPDs). Intended for a wide variety of applications (e.g., electronic shelf labels and smart cards), the thin Spectra EPD is an active matrix TFT glass substrate display with a 180° viewing angle.Pervasive-Spectra

The 2.87″ E2287ES051 module offers a 296 × 128 resolution and 112 dpi pixel density. The 4.2″ E2417ES053 model has 400 × 300 resolution and 120 dpi high-pixel density. Both anti-glare displays have a vertical pixel arrangement.

Spectra EPD features an SPI interface and a fine-tuned embedded waveform for superior optical performance. You can customize the embedded waveform for your specific applications. The bistable Spectra EPD panels require little power to update; they don’t use power to maintain an image. The displays can operate over an ambient temperature range of 0° to 40°. Breakage detection is supported.

Source: Pervasive Displays