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Driving an in-plane passive matrix display

A driver and drive circuit technology, applied in static indicators, instruments, nonlinear optics, etc., can solve the problem of pixel optical state deviating from optical state and other problems

Inactive Publication Date: 2009-04-08
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Such displays have the disadvantage that the optical state of the pixels may deviate from the desired optical state

Method used

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  • Driving an in-plane passive matrix display
  • Driving an in-plane passive matrix display
  • Driving an in-plane passive matrix display

Examples

Experimental program
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Embodiment Construction

[0034] figure 1 A cross-section of a pixel of an in-plane electrophoretic passive matrix display is schematically shown. The storage electrode RE, the gate electrode GE and the display electrode DE are arranged on top of the substrate SU1. The gate electrode GE is arranged between the storage electrode RE and the display electrode DE. Alternatively, one or more electrodes may be arranged on the second substrate as long as they maintain a similar lateral arrangement. A related problem is the motion of the particle PA in the in-plane direction. The storage voltage VR is supplied to the storage electrode RE, the voltage VG is supplied to the gate electrode GE, and the voltage VDP is supplied to the display electrode DE.

[0035] The electrophoretic material EM is sandwiched between the substrates SU1 and SU2. A pixel P is bounded by a wall W. The electrophoretic material EM comprises charged particles PA movable in a suspended fluid (liquid or gas) under the influence of an ...

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Abstract

A driving circuit for driving an in-plane moving particle device has a pixel (P) comprising movable charged particles (PA). The pixel (P) has a reservoir electrode (RE), a display electrode (DE), and a gate electrode (GE) laterally placed in-between the reservoir electrode (RE) and the display electrode (DE). The driving circuit (DC) comprises a driver (DR), a controller (CO) which receives an input signal (OS) representing an image to be displayed on the moving particle device. The controller (CO) controls the driver (DR) to supply a first voltage difference (VDl) between the reservoir electrode (RE) and the gate electrode (GE) and a second voltage difference (VD2) between the gate electrode (GE) and the display electrode (DE). The image is written to the pixel (P) during a write phase (TW) by moving particles (PA) from the reservoir electrode (RE) via the gate electrode (GE) to the display electrode (DE) if the optical state of the pixel (P) should change in conformity with the image. If during the write phase (TW) the optical state of the pixel (P) should not change, the first voltage difference (VDl) has a first write level and the second voltage difference (VD2) has a second write level, both write levels are selected to repulse the particles (PA) from the gate electrode (GE). During a repulsion period (TR), the first voltage difference (VDl) has a level more repulsive to the particles than the first write level, and / or the second voltage difference (VD2) has a level more repulsive than the second write level.

Description

technical field [0001] The present invention relates to a driving circuit for driving an in-plane passive matrix display, an in-plane passive matrix display including such a driving circuit, and a method for driving an in-plane passive matrix display. Background technique [0002] In an electrophoretic in-plane passive matrix display, the pixel comprises a reservoir electrode, a gate electrode and at least one display electrode. These electrodes are provided on the same substrate. The gate electrode is disposed between the storage electrode and the display electrode. The electrophoretic material comprises charged particles movable in suspension under the influence of an electric field generated by electrodes. The optical state of a pixel is determined by the amount of particles present in the display volume associated with the display electrodes. Usually, the storage volume associated with the storage electrode is shielded from the observer. [0003] A new image is writt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G02F1/16761G02F1/16762
CPCG02F2001/1676G09G3/3446G09G2300/06G02F1/16762G02F1/16761
Inventor M·T·约翰逊F·P·M·巴德泽拉尔A·R·M·弗舒伦M·H·W·M·范德尔登S·J·鲁森达尔M·F·吉利斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV