Bi-stable technology displays provide image retention
Subs & Systems
GTK has announced it is now able to supply custom displays using Bi-stable
technology which enables an image to remain on the display screen without
using any power, until the image needs to change.
Bi-stable display technology does not require a backlight, uses compact
industry standard batteries and offers designers a number of other benefits
including high sunlight readability, ultra-wide viewing angles and high
The display technology is similar to e-paper technology, in that it retains
the image on the display screen without consuming power. E-paper is limited
to a black and white colour combination, whereas Bi-stable technology uses
printed fixed colours. Currently blue, red and green colours are available
as standard, with other colours available on request. The typical
configuration is for two colours to be used: one for text and the other for
the contrasting background, but it is possible to add more colour layers to
the display background if required.
Bi-stable technology performs well from a readability and power consumption
perspective, but is limited to simple custom segment, graphic or dot-matrix
displays. It also has a marginally slower response time (image refresh rate)
than more sophisticated displays, such as TFTs. It is also susceptible to UV
light and this can be alleviated by using protective covers, SAYS THE
Clive Dickinson, business manager for optoelectronics, GTK, said:
"Bi-stable display technology is ideal for displays in applications where
power consumption is critical, and the display output requirement is simple.
Typical applications for this technology include shelf-edge labels and
simple consumer electronic products."