Electrophoretic material, electrophoresis display device, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorYasushi Yamazaki
Life of this patent
Estimating the term…
Abstract
In an electrophoretic material, first particles which are charged with a first polarity and second particles which are charged with a second polarity are dispersed in a solvent. A volume, which is obtained by dividing a volume of the solvent by a total number of particles, is called free volume, and a radius of a spherical space, which is occupied by sum of an average volume of the particles and the free volume, is called a free volume radius. A first particle average radius is greater than a second particle average radius. A difference between the free volume radius and the first particle average radius is greater than the second particle average radius. An electric charge amount of the second particles is greater than an electric charge amount of the first particles.
Claims20
An electrophoretic material, wherein
- particles are dispersed in a solvent, volume, which is obtained by dividing a volume of the solvent by a total number of particles, is called free volume, and a radius of a spherical space, which is occupied by sum of an average volume of the particles and the free volume, is called a free volume radius;
- the particles include at least first particles which are charged with a first polarity and second particles which are charged with a second polarity, an average radius of the first particles is called a first particle average radius, and an average radius of the second particles is called a second particle average radius;
- the first particle average radius is greater than the second particle average radius;
- a difference between the free volume radius and the first particle average radius is greater than the second particle average radius;
- and
- an electric charge amount of the second particles is greater than an electric charge amount of first particles.
Dependencies are inferred from the claim text.