Electrophoretic device and method of manufacturing it

An electrophoretic device comprising:

• a pair of electrodes that are arranged opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium, which occupies the space between the electrodes;
• and
• at least one ferroelectric substance layer that is located at a prescribed position within the space between the electrodes;
• wherein at least one of the electrodes is partitioned into a plurality of sections in correspondence with pixels, and wherein the ferroelectric substance layer is correspondingly partitioned into a plurality of sections in correspondence with the pixels.

An electrophoretic device comprising:

• a pair of electrodes that are arranged opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium, which occupies the space between the electrodes;
• and
• at least one ferroelectric substance layer that is located at a prescribed position within the space between the electrodes;
• wherein at least one of the electrodes is partitioned into a plurality of sections in correspondence with pixels, and wherein the ferroelectric substance layer is provided only for desired pixels.

A method for manufacturing an electrophoretic device comprising the steps of:

• arranging a pair of electrodes opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• providing an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium within the space between the electrodes;
• and
• forming at least one ferroelectric substance layer, which is composed of an organic polymer ferroelectric substance, at a prescribed position within the space between the electrodes,
• wherein the ferroelectric substance layer is formed using an organic solvent solution for the organic polymer ferroelectric substance in accordance with a prescribed method;
• and
• wherein the ferroelectric substance layer and the electrophoretic dispersion liquid are electrically connected in series.

A method for manufacturing an electrophoretic device comprising the steps of:

• arranging a pair of electrodes opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• providing an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium within the space between the electrodes;
• and
• forming at least one ferroelectric substance layer, which is composed of an organic polymer ferroelectric substance, at a prescribed position within the space between the electrodes,
• wherein the ferroelectric substance layer is formed using an organic solvent solution for the organic polymer ferroelectric substance in accordance with a prescribed method;
• and
• wherein at least one of the electrodes is partitioned into a plurality of sections in correspondence with pixels, and wherein the ferroelectric substance layer is correspondingly partitioned into a plurality of sections in correspondence with the pixels.

A method for manufacturing an electrophoretic device comprising the steps of:

• arranging a pair of electrodes opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• providing an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium within the space between the electrodes;
• and
• forming at least one ferroelectric substance layer, which is composed of an organic polymer ferroelectric substance, at a prescribed position within the space between the electrodes,
• wherein the ferroelectric substance layer is formed using an organic solvent solution for the organic polymer ferroelectric substance in accordance with a prescribed method;
• and
• wherein at least one of the electrodes is partitioned into a plurality of sections in correspondence with pixels, and wherein the ferroelectric substance layer is provided only for desired pixels.

An electrophoretic device comprising:

• a pair of electrodes that are arranged opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium, which occupies the space between the electrodes;
• at least one ferroelectric substance layer that is located at a prescribed position within the space between the electrodes;
• and
• a switch enabling repetitive and reversible switching between a parallel connection and a serial connection between a layer of the electrophoretic dispersion liquid and the ferroelectric substance layer.

An electrophoretic device comprising:

• a pair of electrodes that are arranged opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium, which occupies the space between the electrodes;
• and
• at least one ferroelectric substance layer that is located at a prescribed position within the space between the electrodes;
• wherein the ferroelectric substance layer and the electrophoretic dispersion liquid are electrically connected in parallel.

A method for manufacturing an electrophoretic device comprising the steps of:

• arranging a pair of electrodes opposite to each other with a prescribed space therebetween, wherein at least one of the electrodes is formed of a transparent material;
• providing an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium within the space between the electrodes;
• and
• forming at least one ferroelectric substance layer, which is composed of an organic polymer ferroelectric substance, at a prescribed position within the space between the electrodes,
• wherein the ferroelectric substance layer is formed using an organic solvent solution for the organic polymer ferroelectric substance in accordance with a prescribed method;
• and
• wherein the ferroelectric substance layer and the electrophoretic dispersion liquid are electrically connected in parallel.

An electophoretic device comprising:

• a pair of electrodes arranged opposite to each other;
• an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium and arranged between the electrodes;
• and
• a capacitance arranged in a space between the pair of electrodes with respect to each pixel, the capacitance being capable of maintaining the state of the electrophoretic dispersion liquid,
• wherein the capacitance and the electrophoretic dispersion liquid are electrically connected in series.

An electrophoretic device comprising:

• a pair of electrodes arranged opposite to each other;
• an electrophoretic dispersion liquid containing electrophoretic particles dispersed in a liquid phase dispersion medium and arranged between the electrodes;
• and
• a capacitance arranged in a space between the pair of electrodes with respect to each pixel, the capacitance being capable of maintaining the state of the electrophoretic dispersion liquid,
• wherein the capacitance and the electrophoretic dispersion liquid are electrically connected in parallel.