Amazon Kindle D00111 Bedienungsanleitung PDF herunterladen (Seite 8)

Figure 2.2: Image courtesy of E-Ink [5]

2.4.2.2 Sipix Microcup® Electrophoretic Display

SiPix is a California based company that manufactures E-Paper displays that it calls Microcup

Electrophoretic Displays (Microcup-EPD) [9]. The company claims that “Electrophoretic

display technology has existed for over 35 years and was first produced at Matsushita in

1969” [9]. In the Roll-to-Roll manufacturing process rolls of Microcup EPDs are prepared by

coating a curable resin composition on a conductor film. The resins are embossed and

hardened and then filled with electrophoretic fluid i.e. spherical microcapsules containing

charged particles. In the next stage sealing fluid are added and finally the filled microcups are

laminated with a second conductor layer. This technology fulfills most of the characteristics

of E-paper including, bistability the company does not produce true color E-paper but

believes that color can be realized by overlaying color filters onto the monochrome display.

Figure 2.3: Cross-section of Sipix (courtesy of Sipix [18])

2.4.3 Electrowetting

In Electrowetting display technology each pixel is a micro cell containing colored oil layer

and an aqueous solution layer usually water. A reflective white colored material that has been

coated with a transparent conductive material and thin film of a water-repellent plastic will be

placed under these micro cells. With zero voltage the ink droplet covers the whole cell thus

representing a color, however, applying a voltage across the plastic will force the oily solution

to shrink at one side of the micro cell exposing the reflective white colored background to the

viewer, normally the technology is not bistable i.e. certain voltage is needed to stabilize the

text/image, however, Advanced Display Technology is bistable (see section 2.4.3.2).

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Amazon Kindle D00111 Bedienungsanleitung Seite 8