Electronic paper displays (EPD) or E-paper displays is a flexible display technology that has advanced rapidly and gained much attention as it is truly lightweight, flexible, rugged, low-power and readable over the traditional display technologies. E-paper displays can also operate reliably in sub-zero temperatures allowing a range of applications in retail stores, cold-chain logistics, and food packaging and storage.
To reduce costs and speed development of EPD applications for sub-zero temperatures, Pervasive Displays (PDi) has unveiled a new TFT active matrix Electronic Paper Display (EPD) module that claims to provide a dynamic, easily-readable display of information down to freezing temperatures of -25° C (-13 °F).
The E2213HS091 is a low power, a high-resolution 2.13-inch display module supporting an operating temperature range from -25° C to 10° C. It is highly integrated, with a built-in timing controller and other support circuitry to help designers simplify and speed product development by minimizing external component count and costs.
The module is suitable for new signage, labeling, tagging and informational applications in sectors and settings such as public information, retail, healthcare, transportation, warehousing, laboratories, cold-chain logistics, and food packaging and storage.
Typical application areas include electronic shelf labels (ESL), Internet of Things (IoT) devices, retail freezers, e-POP (point of purchase) and signage, electronic bulletins, and navigation.
The module uses TFT active matrix monochrome E Ink display panel technology. Text and graphics are sharp and clear due to the display’s high resolution.
Unlike older LCD technology, E Ink displays provides a vibrant, natural light-readable display without needing a power-hungry backlight.
EPDs are also bi-stable in nature, requiring no power to maintain an image and very little power to update an image.
In order to reduce component costs and shorten application development time for developers, the display features an integrated chip-on-glass (CoG) timing controller and booster circuit that reduce the need for external driving circuitry and cut down software development overhead.
To ensure the best image quality, fastest display update speed, and greatest reliability, the timing controller’s one time programmable (OTP) lookup table holds driving waveforms, which control the series of electrical impulses that change the color of the e-paper display’s pixels, the firm explained.
PDi’s stored driving waveforms also help to simplify programming and to ensure the pre-tested waveforms are ideally tuned.