An electrophoretic display with reduced cross walk

A bistable display, voltage waveform technology, applied in the field of reducing crosstalk, can solve problems such as image retention, crosstalk, jitter ghosting, etc.
CN1938747AInactive Publication Date: 2007-03-28KONINKLIJKE PHILIPS ELECTRONICS NV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KONINKLIJKE PHILIPS ELECTRONICS NV
Publication Date
2007-03-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

A technique for driving a bi-stable display (310) such as an electrophoretic display with reduced cross talk, including reduced image retention and dithering ghosting. Drive waveforms are aligned so that, during an image update period, image transitions (500, 600, 700, 800, 900) between substantially similar optical states (e.g., black-to-black) are terminated substantially later than image transitions (520, 620, 720, 920) between substantially different optical states (e.g., black-to-white). Additionally, a drive pulse in the waveforms for the transitions between the similar states compensates for cross talk caused by a drive pulse in the waveforms for the transitions between the different states. The waveforms include at least one extreme drive pulse (ED, EDI, ED2, ED3) and an additional pulse (A) of opposite polarity.
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Description

technical field

[0001] The present invention relates generally to electronic reading devices such as electronic books and electronic newspapers, and more particularly to a method and apparatus for reducing crosstalk when updating bi-stable displays. Background technique

[0002] Recent technological advances have provided "user-friendly" electronic reading devices, such as electronic books, which have opened up many opportunities. For example, electrophoretic displays make us have a lot to look forward to. Such displays have an intrinsic memory behavior and can hold images for relatively long periods of time without power consumption. Power is consumed only when the display needs to be refreshed or updated with new information. Therefore, the power consumption in this display is very low, suitable for application in portable electronic reading devices such as electronic books and electronic newspapers. Electrophoresis refers to the movement of charged particles in an appl...

Claims

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