A variable light transmittance sheet comprises a first transparent electrode and a second transparent electrode spaced apart from the first electrode, and between the electrodes an electrophoretic cell containing an electrophoretic ink and one or more non-planar solid polymer elements. In an embodiment, the electrophoretic ink includes charged particles in a suspending fluid, and 75% or more by mass of the suspending fluid is an organosilicone or an aliphatic hydrocarbon and the solid polymer is a fluorinated elastomeric polymer.

A variable light transmittance sheet comprises a first transparent electrode and a second transparent electrode spaced apart from the first electrode, and between the electrodes an electrophoretic cell containing an electrophoretic ink and one or more non-planar solid polymer elements. In an embodiment, the electrophoretic ink includes charged particles in a suspending fluid, and 75% or more by mass of the suspending fluid is an organosilicone or an aliphatic hydrocarbon and the solid polymer is a fluorinated elastomeric polymer.

An optical path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; and a light conversion unit disposed between the first electrode and the second electrode, wherein the second substrate and the second electrode comprise at least one hole penetrating the second substrate and the second electrode, and a sealing part is disposed inside the hole.

An optical path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; and a light conversion unit disposed between the first electrode and the second electrode, wherein the second substrate and the second electrode comprise at least one hole penetrating the second substrate and the second electrode, and a sealing part is disposed inside the hole.

A peeping prevention structure, a display device and a display method are provided. The peeping prevention structure includes: a first electrode and a second electrode opposite to each other; a plurality of transparent columnar cavities between the first electrode and the second electrode, wherein a plurality of opening regions are defined between the plurality of transparent columnar cavities, and each of the plurality of transparent columnar cavities is filled with charged light-absorbing particles; wherein, the charged light-absorbing particles are configured to, under a control of an electric field between the first electrode and the second electrode, be uniformly diffused in the transparent columnar cavity or be concentrated at an end of the transparent columnar cavity.

An optical path control member, according to an embodiment, comprises: a first substrate by which a first direction and a second direction are defined; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate and by which the first direction and the second direction are defined; a second electrode disposed under the second substrate; and an optical conversion unit disposed between the first electrode and the second electrode, wherein the second substrate and the second electrode include a cutting part penetrating the second substrate and the second electrode, the cutting part includes: a 1-1 cutting part and a 1-3 cutting part disposed to face each other in the second direction; a 1-2 cutting part disposed adjacent to the 1-1 cutting part and spaced apart from the 1-1 cutting part; and a 1-4 cutting part disposed adjacent to the 1-3 cutting part and spaced apart from the 1-3 cutting part, a 1-1 sealing part and a 1-3 sealing part are respectively disposed in the 1-1 cutting part and the 1-3 cutting part, and a 1-2 sealing part and a 1-4 sealing part are respectively disposed inside the 1-2 cutting part and the 1-4 cutting part.

An e-paper display device includes a driving substrate, an e-paper film, and a protective film structure. The e-paper film is arranged on a surface of the driving substrate. The protective film structure is arranged on the driving substrate and includes a laminated structure including a base material layer, a barrier layer and a waterproof adhesive layer. The barrier layer is located between the base material layer and the waterproof adhesive layer, and the protective film structure is arranged on the driving substrate through the waterproof adhesive layer and covering the e-paper film. The protective film structure has a main portion and an extension portion arranged around the main portion. The main portion is attached to the top surface of the e-paper film, and the extension portion is attached to the surface of the driving substrate.

An e-paper display device includes a driving substrate, an e-paper film, and a protective film structure. The e-paper film is arranged on a surface of the driving substrate. The protective film structure is arranged on the driving substrate and includes a laminated structure including a base material layer, a barrier layer and a waterproof adhesive layer. The barrier layer is located between the base material layer and the waterproof adhesive layer, and the protective film structure is arranged on the driving substrate through the waterproof adhesive layer and covering the e-paper film. The protective film structure has a main portion and an extension portion arranged around the main portion. The main portion is attached to the top surface of the e-paper film, and the extension portion is attached to the surface of the driving substrate.

A vehicular display that ensures no cooped-up feeling is felt by an occupant providing limited visibility arranged on a transparent outer panel of a vehicle is an electronic paper that displays a video on a vehicle exterior. The electronic paper is provided with a plurality of hole portions to have a light transmission region through which a light is transmitted in the electronic paper. In a state where the electronic paper is viewed in a thickness direction, a hole occupancy as a ratio of an area of the plurality of hole portions to a whole area of the light transmission region falls within a range of 40% or more and 80% or less, and a maximum length that connects two points on a peripheral edge of each of the hole portions falls within a range of 0.5 mm or more and 8.0 mm or less.

Some embodiments are directed to a light modulator comprising transparent or reflective substrates, multiple electrodes being applied to the substrates in a pattern across the substrate. A controller may apply an electric potential to the electrodes to obtain an electro-magnetic field between the electrodes providing electrophoretic movement of the particles towards or from an electrode.