Miniature, 3-colour e-paper displays for label, signage applications
The additions to the range are the 1.54-inch (E2154FS091), 2.13-inch (E2213FS091), 2.66-inch (E2266FS092) and 2.71-inch (E2271FS091) EPD modules. The displays’ extremely low power consumption, clarity and ease-of-integration suit them for signage and labelling in sectors such as retail, public displays and healthcare, typical applications being electronic shelf labels (ESL), e-POP/signage, electronic bulletins, office automation, navigation displays and other IoT applications.
The company cites reduced costs and faster development time that are possible having brought the timing controller and other support circuits onto the panels themselves with chip-on-glass technology.
The EPD modules are based around TFT active matrix three-pigment, black, white, and red E-Ink display panels. Each display’s pixel density of 103 dpi provides crisp, clear text and graphics. The EPD module technology provides a natural-light-readable display which, due to its bi-stable nature, requires very little power to update an image and no power to maintain the image. Depending on application demands, the small size modules can operate for extended periods of weeks or months on a single small battery. The three-colour design draws attention to adverts and promos, and allows stronger highlighting of critical details in informational displays.
Among the design features is the integrated chip-on-glass (CoG) timing controller. This cuts component costs and application development time by minimizing peripheral circuitry and software programming demands. The timing controller’s one time programmable look up table holds driving waveforms, which control the series of electrical impulses that change the colour of the e-paper display’s pixels. Pervasive Displays’ stored driving waveforms simplify programming, and help ensure the best possible image quality, display update speed, and reliability for each EPD.
As well as the integrated timing controller, the CoG design includes a booster circuit and makes possible a thin profile EPD. The slim size of the panel enables a smaller product form factor and allows for larger batteries in mobile applications.
Pervasive Displays; www.pervasivedisplays.com