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AssigneeKoninklijke Philips Electronics N.V.
InventorsWillem Ijzerman, Michel Cornelis Vissenberg, Marcellinus Petrus Krijn, Siebe De Zwart
Estimating the term…
A display unit comprising electro-wetting pixels (1300) is provided. The inventive pixels (1300) provide bistable or multi-stable pixel states and thus facilitates passive matrix addressing. For this purpose an additional electrode (1305) is arranged for each multi-stable state. Consequently, each pixel comprises one counter electrode (1306) and at least one pair of address and retain electrodes (1304, 1305). In order to activate a pixel, an address potential is applied to the address and retain electrodes (1304, 1305) in relation to the counter electrode (1306), and in order to deactivate a pixel the potential is removed. In order to retain a current pixel state a retain potential is applied to only the retain electrode (1305) in relation to the counter electrode (1306); the current pixel state, be it active or passive, will then be preserved and the retain potential configuration thus provides a bistable pixel state.
A display unit comprising at least one electro-wetting pixel (1300), each electro-wetting pixel comprising:
A method for bistable addressing of at least one electro-wetting pixel, each pixel comprising an address electrode (1304), a retain electrode (1305) and a counter electrode (1306),
A method for bistable addressing according to claim 13, wherein a plurality of pixels in a display device are addressed during picture frames, the method comprising the consecutive steps of:
A method for bistable addressing according to claim 14, the pixels being arranged in a matrix having rows and columns and the pixels being addressed one row at a time.
Dependencies are inferred from the claim text.