SiPix Imaging Inc.

Fremont, CA, United States

SiPix Imaging Inc.

Fremont, CA, United States

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Patent
SiPix Imaging Inc. | Date: 2014-05-15

The present invention provides driving methods for electrophoretic color display devices. The backplane system used for the driving methods is found to be simpler which renders color display devices more cost effective. More specifically, the driving method comprises first driving all pixels towards a color state by modulating only the common electrode, followed by driving all pixels towards their desired color states by maintaining the common electrode grounded and applying different voltages to the pixel electrodes.


Patent
SiPix Imaging Inc. | Date: 2014-05-15

The present invention provides a color display device in which each pixel can display four high quality color states. More specifically, an electrophoretic fluid is provided which comprises four types of particles, dispersed in a solvent or solvent mixture. The fluid may further comprise substantially uncharged neutral buoyancy particles.


Patent
SiPix Imaging Inc. | Date: 2014-05-15

The present invention provides a multicolor display device which can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three or four types of particles and color filters are placed on the viewing side of the display device.


Patent
SiPix Imaging Inc. | Date: 2014-03-03

The invention relates to a method for driving a display cell filled with an electrophoretic fluid comprising two types of charged particles carrying opposite charge polarities and of two contrast colors, wherein the two types of pigment particles are dispersed in a solvent of a color or in a solvent with non-charged or slightly charged colored particles dispersed therein. The method comprises driving said display cell to display the color of the solvent or the color of the non-charged or slightly charged colored particles by applying a driving voltage which is about 1 to about 20% of the full driving voltage.


Patent
Sipix Imaging Inc. | Date: 2014-02-12

The present invention is directed to an electrophoretic fluid comprising transparent particles, as an additive. The presence of the transparent particles in the fluid provides improved display performance.


Patent
SiPix Imaging Inc. | Date: 2014-04-11

The invention relates to waveforms, circuits and methods for driving bistable displays. The invention is directed to a method, comprising in combination: applying, across a bistable display device, a shaking signal comprising a plurality of positive and negative pulses each driven for a first time to disperse partially packed particles; applying, across the device, one or more first driving signals to first pixels of the device for second times that are sufficient to drive the first pixels to one or more reference states; and concurrently with the first driving signals, applying, across the device, one or more second driving signals to second pixels of the device for third times that are shorter than necessary to drive the second pixels to any of the one or more reference states.


Patent
SiPix Imaging Inc. | Date: 2014-04-18

The present invention provides a realistic solution for a highlight or multicolor display device which can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises four types of particles, having different levels of size, threshold voltage or charge intensity.


Patent
SiPix Imaging Inc. | Date: 2014-04-01

The present invention provides a reflective color display device which can display multiple color states, without the disadvantages associated with previously known color display devices. The display fluid of the present invention comprises (a) black and white electrophoretic particles which are oppositely charged and (b) charged color-generating particles having photonic crystal characteristics, all of which are dispersed in a solvent or solvent mixture.


Patent
Sipix Imaging Inc. | Date: 2013-10-24

The present invention is directed to an electrophoretic display device comprising a plurality of display cells, wherein said display cells are filled with an electrophoretic fluid comprising: a) charged pigment particles of a first color; and b) a solid porous matrix of a second color, in which the charged pigment particles dispersed in a solvent. The electrophoretic fluid has many advantages, such as increased contrast without affecting the switching speed.


Patent
SiPix Imaging Inc. | Date: 2013-11-18

The present invention is directed to a color display comprising an electrophoretic fluid comprising two types of pigment particles of contrasting colors and carrying opposite charge polarities dispersed in a clear and colorless solvent, wherein said electrophoretic fluid is sandwiched between a common electrode and a plurality of colored sub-pixel electrodes or colored pixel electrodes.

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