An electrophoretic display device capable of having retention property of electrophoretic particles and exhibiting excellent display characteristics, and an electronic apparatus. The electrophoretic display device includes an element substrate, a counter substrate disposed to face counter substrate, a molecule X provided between the element substrate and the counter substrate, an electrophoretic dispersion liquid containing electrophoretic particles and a dispersion medium, wherein the electrophoretic dispersion liquid is disposed between counter substrate and molecule X, wherein molecule X includes an aromatic ring having a cyclic structure, for example, benzene, toluene, xylene, and the like.

An electrophoretic display device capable of having retention property of electrophoretic particles and exhibiting excellent display characteristics, and an electronic apparatus. The electrophoretic display device includes an element substrate, a counter substrate disposed to face counter substrate, a molecule X provided between the element substrate and the counter substrate, an electrophoretic dispersion liquid containing electrophoretic particles and a dispersion medium, wherein the electrophoretic dispersion liquid is disposed between counter substrate and molecule X, wherein molecule X includes an aromatic ring having a cyclic structure, for example, benzene, toluene, xylene, and the like.

The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.

An electrophoretic device (101) comprises a first electrode (60) and a second electrode (60) spaced apart from the first electrode (60). An electrophoretic cell (809) containing an electrophoretic ink (830) and one or more optically-transparent, non-planar, solid polymer elements (808) is located between the electrodes (60). The ink (830) includes charged particles (11) of at least one type suspended in an optically-transparent suspending fluid (820). The refractive indices of the solid polymer elements (808) and the suspending fluid (820) are matched to have a difference of less than 0.0075, and for half or more of the operating temperature range of the device (0 C.-70 C.), the thermo-optic coefficients (temperature coefficient of refractive index per Kelvin) of the solid polymer elements (808) and the suspending fluid (820) are matched to have an arithmetic-mean difference of less than 0.0002/K in magnitude.

A color electrophoretic display with distinct switching areas formed by a segmented top plane electrode opposite driving pixel electrodes. The distinct areas are programmed to switch at different times, thereby reducing the flashiness seen by a viewer during an image update. In one embodiment, the color electrophoretic medium of the display includes a reflective white particle and three other sets of particles, each comprising a different subtractive color.

A display device includes a driving substrate, a display medium layer, a water vapor barrier layer, a protective layer, and a glue layer. The display medium layer is disposed on the driving substrate. The water vapor barrier layer is disposed on the display medium layer and covers a periphery of the display medium layer. The protective layer is disposed on the water vapor barrier layer. The glue layer covers a periphery of the water vapor barrier layer and at least part of a periphery of the protective layer. A water vapor transmission rate of the water vapor barrier layer is less than a water vapor transmission rate of the glue layer.

A display device includes a driving substrate, a display medium layer, a water vapor barrier layer, a protective layer, and a glue layer. The display medium layer is disposed on the driving substrate. The water vapor barrier layer is disposed on the display medium layer and covers a periphery of the display medium layer. The protective layer is disposed on the water vapor barrier layer. The glue layer covers a periphery of the water vapor barrier layer and at least part of a periphery of the protective layer. A water vapor transmission rate of the water vapor barrier layer is less than a water vapor transmission rate of the glue layer.

An electrophoretic medium comprises a plurality of core-shell particles and a non-polar fluid. The core-shell particles comprise an organic pigment particles core and a shell comprising a metal oxide layer and a silane layer. The metal oxide layer may have a thickness of 0.4 to 2 nm. It may be formed using a fluidized bed reactor by inserting the organic pigment into the reactor as a powder bed, contacting the powder bed with a gaseous stream comprising a metal oxide precursor and an inert gas, and contacting the powder bed with a gaseous stream of a reagent and an inert gas. The silane layer is formed from a silane compound comprising a first functional group, wherein the first functional group reacts with the metal oxide.

An electrophoretic medium comprises a plurality of core-shell particles and a non-polar fluid. The core-shell particles comprise an organic pigment particles core and a shell comprising a metal oxide layer and a silane layer. The metal oxide layer may have a thickness of 0.4 to 2 nm. It may be formed using a fluidized bed reactor by inserting the organic pigment into the reactor as a powder bed, contacting the powder bed with a gaseous stream comprising a metal oxide precursor and an inert gas, and contacting the powder bed with a gaseous stream of a reagent and an inert gas. The silane layer is formed from a silane compound comprising a first functional group, wherein the first functional group reacts with the metal oxide.

An optical path control member according to an embodiment comprises: a first substrate on which a first direction and a second direction are defined; a first electrode arranged on the first substrate; a second substrate which is arranged on the first substrate and on which the first direction and the second direction are defined; a second electrode arranged under the second substrate; and a light conversion unit arranged between the first electrode and the second electrode, wherein the light conversion unit comprises an alternately arranged plurality of partition parts and plurality of accommodation parts, a light conversion material is arranged in the accommodation part, the accommodation part comprises at least one first region and at least one second region, and the height of the light conversion material arranged in the first region is less than the height of the light conversion material arranged in the second region.