Electrophoretic display with dual-mode switching
AssigneeSiPix Imaging, Inc.
InventorsRong-Chang Liang, Jerry Chung
Life of this patent
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Abstract
The present invention relates to an improved EPD which comprises both the traditional up/down switching and the in-plane switching modes. The monochrome EPDs of the present invention are capable of displaying highlight color of choice which is different from the text. Furthermore, the full color EPDs of the present invention are capable of displaying high contrast images of high color saturation. Both high quality black and white states are possible in the full color displays of the present invention. The EPDs of the present invention do not need complex circuitry design, and are compatible with low cost and high yield roll-to-roll manufacturing processes.
Claims15
An electrophoretic display comprising an array of electrophoretic cells, wherein each of said electrophoretic cells is sandwiched between a top layer comprising a top electrode and a bottom layer comprising a bottom electrode and each of said electrophorectic cells comprises
- (i) partition walls;
- (ii) in-plane electrodes which are part of the partition walls;
- and
- (iii) an electrophoretic composition filled therein and said electrophoretic composition comprises charged pigment particles dispersed in a dielectric solvent or solvent mixture,
- whereby each of said electrophoretic cells is capable of providing a three color system, displaying the color of the charged pigment particles, or the color of the dielectric solvent or solvent mixture, or a background color.
Dependencies are inferred from the claim text.