Process for the manufacture of electrophoretic displays
AssigneeSiPix Imaging, Inc.
InventorsXiaojia Wang, Rong-Chang Liang, Gary Kang
Life of this patent
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Abstract
This invention relates to a process for the manufacture of a multi-color electrophoretic display involving adding colorant solutions or dispersions of different colors and charged pigment particles in separate steps. The process comprises a first step of pattern-wise filling colorant solutions or dispersions into microcups in predetermined areas, followed by a step of pattern-wise or non-pattern-wise adding an electrophoretic fluid comprising charged pigment particles dispersed in a dielectric solvent or solvent mixture into the microcups which are pre-filled with the colorants.
Claims25
A process for the manufacture of an electrophoretic display, comprising the steps of:
- (i) filling microcups with colorant solutions or dispersions of different colors in different pre-selected areas, each of said colorant solutions or dispersions comprising a colorant dissolved or dispersed in a carrier solvent,
- (ii) removing said carrier solvent in said colorant solutions or dispersions, and
- (iii) filling said colorant-containing microcups with an electrophoretic fluid comprising charged pigment particles dispersed in a dielectric solvent or solvent mixture in which said colorants are soluble or dispersible.
A process for the manufacture of an electrophoretic display comprising microcups filled with electrophoretic fluids having different electrophoretic characteristics, which process comprises the steps of:
- (i) filling microcups with additive solutions or dispersions of different electrophoretic characteristics in different pre-selected areas, each of said additive solutions or dispersions comprising an additive dissolved or dispersed in a carrier solvent,
- (ii) removing said carrier solvent in said additive solutions or dispersions, and
- (iii) filling said additive-containing microcups with an electrophoretic fluid comprising charged pigment particles dispersed in a dielectric solvent or solvent mixture in which said additives are soluble or dispersible.
Dependencies are inferred from the claim text.