NEC have created a couple of E-Paper screen modules which are in either A3 or A4 sizes. The system uses microcapsule electrophoresis excite the white pigment particles that activate when positive electrodes are used. When negative electrodes are used the pigment particles will turn black.
Each of the pigment particles are held in a clear microcapsule which is shifted around by applying voltage. A contrast ratio of 10:1 can be created while the screens have a reflectivity of 43%. Sixteen shades of grey can also be seen on the screen.
For more details check out Nikkeibp.
Via: UberGizmo
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