e-Paper displays offer low-power bi-stable display technology

Review Display Systems offers a range of monochrome and colour e-Paper displays from Holitech Technology Corporation.

They can support and supply various monochrome and colour e-Paper display panels from 1.54" to 31.2". Segment and dot matrix types with various resolutions are available.

Ideal for low-power applications, these displays employ a bi-stable display technology where no applied power is needed to maintain a display image. The display image is retained when all power sources are removed. An e-Paper display will only consume power when the display image is being changed or updated.

The internal structure of the display comprises a layer of transparent electrophoretic liquid which contains microcapsules or micro-cups. Each micro-cup contains white particles with a negative charge, yellow particles with a negative charge, magenta particles with a positive charge, and cyan particles with a positive charge. When different voltages are applied, the various colour particles migrate to the top layer and become visible to the observer. All the colour pigments are in every pixel, this helps to eradicate light attenuation and provides paper-like readability in all lighting conditions and viewing angles. Colour mixing techniques can facilitate a colour spectrum of 32K colours.

Bi-stable e-Paper displays can help to significantly reduce system power consumption and extend the lifetime of battery-power products. Substantial power savings can be achieved using an e-Paper display compared to an equivalent-sized TFT LCD screen.

Holitech e-Paper displays operate as reflective mode displays, therefore, in bright, ambient light environments, the display image will appear brighter with enhanced levels of colour saturation. Users of e-Paper displays are not subject to the same eye fatigue that can be experienced when using TFT LCDs for a prolonged period of time. The need for an LED backlight is removed, reducing power consumption compared to transmissive TFT LCD screens.

e-Paper displays are constructed with an ink layer laminated to a flexible, plastic film substrate. Plastic-based e-Paper displays allow the finished end product to be notably lighter and thinner than products employing glass-based display substrates. The use of plastic-based e-Paper displays can also offer a more rugged and durable display solution, while glass-based TFTs can be sensitive to extreme shock, vibration, and physical impacts.

This company's e-Paper displays are ideal for a wide range of innovative and unique applications, including battery-powered devices, handheld equipment, wearables, medical systems, retail pricing displays, IoT devices and many more.