E-Paper Displays
Readability like printed paper
E-paper technology has the advantage of offering readability like printed paper. The brighter the environment, the better the contrast. In the dark, you need a light source to illuminate the display from the front.
The technology developed and patented by EInk uses colored microspheres that are mechanically moved by an electric field in the display. Power is only required at the moment of switching, otherwise the display shows the content even without the supply of external energy. EPaper displays are available from small (1“) to large (>20”) diagonals. Initially, the displays are monochrome, but one or two accent colors also enable an attractive presentation. Multicolor displays are increasingly being used for professional applications, including in the digital signage sector, as their ecological footprint is smaller than that of conventional TFTs. One disadvantage may be the limited temperature range. Their great advantage, especially for portable, battery-operated devices, is their zero power consumption during operation, so that devices such as temperature or energy meters can be in operation for more than a year with a lithium cell.
The level of complexity of an e-paper display ranges from a simple bar graph for consumer applications such as water filters, to seven-segment displays with graphic symbols, to full graphic displays. Displays that can show another color as an accent in addition to light and dark are popular. Red and yellow are bright and attract attention.
The backplane of an e-paper display can be a glass substrate, but also plastic. The latter are bendable and can be attached to curved surfaces, such as those found in wearables for sports and medicine.
Control from the system side is simple and can be done via a serial interface (SPI) from any microcontroller. There are special drive ICs that also generate the voltage required to polarize the beads on the chip.
We supply a wide range of e-paper displays, from monochrome to 3-color and full color from 1" to 13.3".
Applications:
- Price tags in retail
- Goods tags and barcodes in logistics
- Medical instruments, e.g. for blood pressure and oxygen saturation
- Office: room reservations, name tags
- Traffic: timetables, gas stations and charging stations
Consulting and contact
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