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Fremont, CA, United States

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 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: 2014-02-12

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: 2013-03-01

The present invention is directed to color display devices which are capable of displaying multiple color states. The display device comprises a plurality of display cells, wherein each of said display cells is (a) sandwiched between a first layer comprising a common electrode and a second layer comprising a plurality of driving electrodes, wherein at least one of the driving electrodes is a designated electrode, (b) filled with an electrophoretic fluid comprising at least two types of pigment particles dispersed in a solvent or solvent mixture, and (c) capable of displaying at least four color states. The display device may also comprise hiding layers or a brightness enhancement structure on the viewing side.


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.

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