The new series EA EPA ePaper displays offer the most neutral representation for texts and graphics available today. The displays are designed as black/white displays with two additional gray scales.
With approximately 90 dpi, the displays offer a very high resolution and are therefore suitable for extremely detailed representations. These displays provide excellent readability even without lighting.
ePaper is based on Joseph Jacobson’s technology, which was already in use in 1990. Microcapsules of various sizes contain white and black particles in a transparent, highly viscous polymer. The white particles are charged positively, and the black ones negatively.
A pixel consists of an irregular number of these microcapsules. If an electric field is applied, this changes the appearance for the viewer. The particles align rapidly with the electric field and the electric field can be removed quickly. The position of the particles remains stable.
The electric field is controlled to an extremely fine level by means of an active TFT matrix. In this way it is possible to control the “gray scales” via the duration of application of the electric field. As a result of the viscosity of the polymer, ePaper is able to store its content for long periods without requiring power.
Application areas range from traditional price tags, weather stations, level indicators, transit schedules and doorplates all the way to the eBook readers everyone is familiar with.
With a height of just 1.18 mm, these displays fit any application. The interface for the 2” version EA EPA20-A is a standard SPI interface. A 24-pole ZIF connector is used for connection. The operating voltage is 3.3 V.
For further information, please refer to the data sheet for the 2” display or for controller SSD1606.
Further displays sized 4.3” and 6” are being developed.
For easy commissioning and your own tests, we offer starter kit EA eLABEL20-A / EA 9780-3USB. We have developed a controller for the 2” ePaper display that ships with display and battery. EA eLABEL20-A automatically displays several pages consecutively. It is possible to display your own texts and pictures using one of the integrated serial interfaces SPI, RS-232 or I²C. The onboard FLASH and integrated character sets make it easier to create individual demos.
Thanks to the battery (CR2032), after loading your own pictures and texts via the EA 9780-3USB USB interface, the starter kit can be disconnected from the PC for power-independent demos. See data sheet EA eLABEL20-A for dimensions and integrated functions.
The USB interface EA 9780-3USB can be used for programming and loading texts and pictures.
|Ordering Code||Description||Resolution||Integrated Controller||Data Sheet|
|EA EPA20-A||e-Paper Display 2"||172x72||SSD1606||EPA20-A|
|EA EPA43-A||e-Paper Display 4.3"||800x600||HX8705B||EPA43-A|
|EA EPA60-A||e-Paper Display 6"||800x600||HX8705B||EPA60-A|
|EA ELABEL20-A||Intell. e-Paper Display 2"||172x72||Intelligent with SPI, I²C, RS-232||ELABEL20-A|
|EA EVALELABEL20||Starterkit 2" for PC/USB||172x72||Intelligent plus test board for USB|
Customized displays may be supplied up to a maximum size of 300 x 300 mm (L x W). The design of the black/white segments is based on your individual specifications (i.e. simple sketches or technical drawings).
The high-contrast displays, which are extremely easy to read even in sunlight and without additional lighting, are supplied with I2C controller included. These are available for 36, 90 and 120 segments. The e-Paper display functions without power, i.e. the segments remain permanently visible even without an operating voltage. Energy is only required to change over the segments. This makes the displays ideal for battery operation, for wireless loading and for harvesting energy. The electric interface is I2C and the power supply 3.3 V. The cable connection is likewise designed to customer specifications.