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Driving method for improving display contrast of microcapsule electrophoresis display device

An electrophoretic display and driving method technology, applied in static indicators, instruments, etc., can solve the problem of lowering the display contrast of pixel units, and achieve the effects of improving contrast, achieving uniformity, and improving display contrast.

Inactive Publication Date: 2010-09-29
SUN YAT SEN UNIV
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Problems solved by technology

[0004] When the microcapsule electrophoretic display pixel unit is driven to the extreme optical display state (that is, saturated black or saturated white state) at a single pulse voltage, due to the action of the built-in electric field of charged particles in the microcapsule, the optical state of the display pixel will change: charged Particles move away from the electrode, causing the black state to move towards the white state, and the white state to move towards the black state, so the overall effect is to cause a decrease in pixel cell display contrast

Method used

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  • Driving method for improving display contrast of microcapsule electrophoresis display device
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  • Driving method for improving display contrast of microcapsule electrophoresis display device

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Embodiment Construction

[0019] figure 1 Represents a microcapsule electrophoretic display pixel unit structure and working principle diagram, where "1" represents a microcapsule electrophoretic pixel display unit, "2" represents the substrate substrate, "3" and "3'" represent the pixel electrode, "4 " represents the transparent common electrode, "5" represents microcapsules, "6" represents positively charged black display nanoparticles, "7" represents negatively and positively charged white display nanoparticles, and "8" represents electrophoretic fluid. When a positive voltage relative to the common electrode 4 is applied on the electrodes 3 and 3', the black particles gather to the side of the transparent electrode 4, and the white particles gather to the side of the pixel electrodes 3 and 3'. Shows black. On the contrary, when a negative voltage relative to the common electrode 4 is applied on the electrodes 3 and 3', the black particles move towards the electrodes 3 and 3', and the white particl...

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Abstract

The invention relates to a driving method for improving the display contrast of a microcapsule electrophoresis display device. The driving method comprises the contents and is characterized in that: the electrophoresis display device is driven to display by adopting a subpulse sequence voltage waveform; and the subpulse sequence driving voltage corresponds to a display information content, and the waveform of the subpulse sequence driving voltage comprises a plurality of pulses and gaps among the pulses, wherein the pulses and the gaps can be combined at will. Relative to the driving of a single-pulse driving voltage waveform, the driving mode of the subpulse sequence voltage waveform can improve the display contrast of the microcapsule electrophoresis display device.

Description

technical field [0001] The invention relates to a driving method for improving the display contrast of a microcapsule electrophoretic display device. technical background [0002] A microcapsule electrophoretic display device is disclosed in International Patent Application WO99 / 53373. The device includes two substrates: one is a transparent substrate provided with a common electrode (usually called a common electrode substrate); the other is a substrate provided with several electrodes (ie, pixel electrodes) (usually called a pixel electrode substrate). Row and column structure arrangement settings. Display pixels or cells are associated with the intersections of row and column electrodes. Each pixel unit comprises a pixel electrode, a transparent common electrode and an electrophoretic display material (also referred to as electronic ink display material) unit (hereinafter referred to as an electronic ink display unit) between the two electrodes. Each electronic ink dis...

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Application Information

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IPC IPC(8): G09G3/34
Inventor 邓少芝李晓许宁生
Owner SUN YAT SEN UNIV
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