Methods and compositions for improved electrophoretic display performance
AssigneeSiPix Imaging, Inc.
InventorsZarng-Arh George Wu, Jeanne E. Haubrich, Xiaojia Wang, Rong-Chang Liang
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Abstract
The invention is directed to novel methods and compositions useful for improving the performance of electrophoretic displays. The methods comprise adding a high absorbance dye or pigment, or conductive particles, or a conductive filler in the form of nanoparticles and having a volume resistivity of less than about 104 ohm cm, or a charge transport material into an electrode protecting layer of the display.
Claims17
A method for improving performance of an electrophoretic display, wherein said electrophoretic display comprises
- (i) display cells filled with an electrophoretic fluid comprising charged pigment particles dispersed in a solvent or solvent mixture wherein said display cells are sandwiched between a first electrode layer and a second electrode layer,
- (ii) a sealing layer on the open side of each of said display cells,
- (iii) a primer layer between the display cells and the second electrode layer, and
- (iv) an adhesive layer between the sealed display cells and the first electrode layer;
- which method comprises adding a first conductive material into the sealing layer, and
- adding a dye or pigment, a second conductive material, or a charge transport material into the primer layer or into the adhesive layer.
The method of 1, wherein said dye or pigment is selected from the group consisting of metal phthalocyanines, metal naphthalocyanines, metal porphines, azo dyes, squaraine dyes, perylene dyes and croconine dyes.
Dependencies are inferred from the claim text.