摘要:
Methods form multi-color electrophoretic displays. The method includes providing a solution containing microcapsules, wherein the microcapsules comprise: a shell that is transparent and a display medium within the shell, wherein the display medium comprised of either (a) at least two sets of differently colored particles in a substantially clear fluid, or (b) at least one set of colored particles in a differently colored fluid. The method includes dispensing the solution onto a substrate, wherein a display layer of microcapsules is formed on the substrate. The method includes positioning a conductive substrate adjacent to the substrate, wherein the substrate is located between the display layer and the conductive substrate, wherein the conductive substrate applies an electric field to at least one microcapsule of the display layer, wherein the sets of particles of each microcapsule in the display layer are movable within the microcapsule by the electric field to be displayed.
摘要:
Methods form a multi-color electrophoretic display. The methods include providing microcapsules, wherein the microcapsules have an electrostatic charge, and wherein the microcapsules comprise, a shell that is transparent and a display medium within the shell, wherein the display medium is comprised of either (a) at least two sets of differently colored particles in a substantially clear fluid, or (b) at least one set of colored particles in a differently colored fluid. The methods include transferring the microcapsules to a substrate, wherein the electrostatic charge of the microcapsules attracts the microcapsules to the substrate, wherein a display layer of microcapsules is formed on the substrate. The methods include positioning a conductive substrate adjacent to the substrate, wherein the substrate is located between the display layer and the conductive substrate. In use, the conductive substrate applies an electric field to the display layer, and wherein the sets of particles within each microcapsule in the display layer are movable within the microcapsule by the electric field.
摘要:
A parallel wire apparatus allows direct lateral viewing of particles of electrophoretic ink that are undergoing electrophoretic migration. Electrophoretic ink movement is commonly monitored by placing the ink through the top electrode, but as the toner particles migrate back and forth between the two electrodes, the viewer can not see what lies beneath the top electrode. This may hide commonly known failure modes, such as particle agglomeration, swishing of particles due to hydrodynamic effects. The parallel wire apparatus (500) includes two narrow gauge wires glued to a glass substrate and held apart in parallel at a fixed distance to help maintain a uniform electric field across the gap. A plastic block (600) with pegs that are situated at a fixed distance and threaded screws is used to make the lateral wire apparatus with precise wire spacing that may be reproducibly made in less than five minutes using inexpensive and readily available materials.
摘要:
Disclosed is a machine readable code of a set of distinguishable symbols including at least a first symbol for encoding zeroes and a second symbol for encoding ones, wherein the first symbol exhibits a first color during machine reading and the second symbol exhibits a second color during machine reading, wherein the first color and the second color are detectably different under machine reading conditions.
摘要:
It is provided an electrophoretic display device comprising a display layer comprised of a multiplicity of individual reservoirs containing a display medium over a conductive substrate, and a color filter layer over the display layer, wherein the display medium comprises a set of white particles dispersed in a dark colored dielectric fluid or a set of dark colored particles and a set of white particles dispersed in a clear dielectric fluid, the display medium having an electrical conductivity of about 10 -11 to about 10 -15 S/m, and wherein the color filter layer comprises each of a red tinted transparent portion, a blue tinted transparent portion and a green tinted transparent portion.
摘要:
Provided is an electrophoretic display medium, comprising one or more set of colored particles in a dielectric fluid, and wherein at least one of the one or more set of particles comprise particles having thereon at least one polyelectrolyte coating.
摘要:
Provided is an electrophoretic display medium, comprising one or more set of colored particles in a dielectric fluid, wherein at least one of the one or more set of particles comprise colored particles having attached to an external surface thereof additive particles.
摘要:
Provided is an electrophoretic display medium, comprising one or more set of colored particles in a dielectric fluid, wherein at least one of the one or more set of particles comprise particles having acid functional groups imparting a substantially uniform negative charge to the particles. The particles are obtained by emulsion and aggregation of polymer particles in an aqueaous emulsion; the acid functional groups are preferably obtained by hydrolysis of maleic anhydride. Also disclosed is an electrophoretic display comprising a multiplicity of reservoirs (30,31,32) filled with the electrophoretic medium.