Patent ID: 9417500
Filing Date: 2016-08-16
CPC Classification: G02F

Claim Text:
1. An electrophoretic display device comprising: a display region and another region separated by a porous layer; a plurality of first particles which migrate through the porous layer and between the another region and the display region in response to an electric field; and a plurality of non-migrating second particles which are fixedly disposed in the porous layer and which allow the plurality of first particles to pass through the porous layer in response to the electric field, and which cover the plurality of first particles when the first particles are disposed in the another region, wherein, the non-migrating second particles include particles of a first primary particle size and particles of a second primary particle size, wherein a weight percentage of the particles of the second primary particle size, in the non-migrating second particles, is greater than a weight percentage of the particles of the first primary particle size, in the non-migrating second particles, the particles of the first primary particle size are larger than the particles of the second primary particle size and cover the plurality of the first particles when the first particles are disposed in the another region, and the particles of the second primary particle size are smaller than the particles of the first primary particle size and allow the plurality of first particles to pass through the plurality of non-migrating second particles.