Abstract: A liquid for an electrowetting element includes a plurality of solid particles dispersed in a liquid vehicle. Each of the plurality of solid particles comprises, respectively, a solid core with a coating comprising silicon dioxide.

Abstract: An electrowetting display device comprising a first fluid; a second fluid immiscible with the first fluid; a first support plate having: a surface adjoined by at least one of the first or second fluids, and a first electrode. The device further comprises a second support plate; a second electrode in electrical contact with the second fluid; and a third electrode. The device comprises a protrusion formed as part of at least one of the first support plate or the second support plate. The protrusion has an elongate shape extending from one to the other of the first or second support plates. The protrusion comprises a protrusion surface formed of a material which, without a voltage applied, is less wettable for the first fluid than the surface of the first support plate.

Abstract: A display apparatus comprises an electrowetting picture element with a first support plate with a first support plate portion comprising a layer substantially non-transmissive for light and second support plate portion substantially non-absorbing for light. A display controller is configured to control a display effect of the electrowetting picture element between a dark and light display effect, and, responsive to input data corresponding to the dark display effect, output at least one signal to a driver corresponding to the dark display effect. The driver is configured to, responsive to the at least one signal output by the display controller, apply a first, non-zero, voltage to the electrowetting picture element to switch a first and a second fluid of the electrowetting picture element to a first configuration with the first fluid and the second fluid in contact with a first surface of the first support plate portion and the first fluid in contact with a second surface of the second support plate portion.

Abstract: An electrowetting display device comprising a first support plate including: a surface; and a first electrode, a second support plate; and a protrusion having a protrusion surface. The protrusion is formed as part of at least one of the first or second support plates. The protrusion has an elongate shape extending from one to the other of the first or second support plates. The device further comprises a first fluid adjoining at least one of the protrusion surface or the surface of the first support plate; a second fluid immiscible with the first fluid; a second electrode in electrical contact with the second fluid; and a third electrode.

Abstract: Subject matter disclosed herein relates to arrangements and techniques that provide for improving contact angle measurement of a liquid droplet on an interface. An apparatus for measuring contact angles of a liquid droplet on a substrate comprises a platform configured to support the substrate and a camera configured to capture images of a liquid droplet on the interface. The apparatus further comprises multiple light sources to illuminate the liquid droplet along multiple direction and multiple optical paths to direct light illuminating the liquid droplet to the camera.

Abstract: An apparatus comprises an electrowetting display device comprising: a first support plate including: a surface; and a first electrode. The apparatus further comprises a second support plate and a protrusion having a protrusion surface. The protrusion is formed as part of at least one of the first support plate or the second support plate. The protrusion has an elongate shape extending from one to the other of the first or second support plates. At least one memory and computer program instructions are configured to, with at least one processor, control a volume of the first fluid adjoining the protrusion surface and a volume of the first fluid adjoining the surface of the first support plate, by controlling a magnitude of a first voltage applied between the first and second electrodes, and by controlling a magnitude of a second voltage applied between the third and second electrodes.

Abstract: A method of manufacturing an electrowetting device includes dispensing a first liquid on a surface of a support plate and dispensing a second liquid to adjoin the first liquid. The first liquid is an emulsion. A first portion of the first liquid transfers into the second liquid to form a first layer of liquid and a second layer of liquid substantially immiscible with the first layer. The first layer comprises a second portion of the first liquid and the second layer comprises the second liquid and the first portion.

Abstract: An electrowetting element comprises a first fluid and a second fluid substantially immiscible with the first fluid. Greater than or equal to 0.05 wt % and less than or equal to 15 wt % of the second fluid is water.

Abstract: A display apparatus comprises an electrowetting picture element with a first support plate with a first support plate portion comprising a layer substantially non-transmissive for light and second support plate portion substantially non-absorbing for light. A display controller is configured to control a display effect of the electrowetting picture element between a dark and light display effect, and, responsive to input data corresponding to the dark display effect, output at least one signal to a driver corresponding to the dark display effect. The driver is configured to, responsive to the at least one signal output by the display controller, apply a first, non-zero, voltage to the electrowetting picture element to switch a first and a second fluid of the electrowetting picture element to a first configuration with the first fluid and the second fluid in contact with a first surface of the first support plate portion and the first fluid in contact with a second surface of the second support plate portion.

Abstract: Electrowetting element including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole. The plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.

Abstract: A fluid for an electrowetting element includes a dispersion of a plurality of solid particles in a liquid vehicle. Respective ones of the plurality of solid particles each include a solid core having a coating comprising silicon dioxide.

Abstract: An electrowetting device comprises a first support plate and a second support plate, pixel regions between the first support plate and the second support plate, pixel walls on the first support plate that delineate the pixel regions from one another, and an electrolyte solution between the first support plate and the second support plate. The electrolyte solution includes an adsorbent.

Abstract: A display apparatus includes an electrowetting display device having at least one picture element with a display area. The display area has an active area and a different, inactive area and a display controller controls a display effect of the picture element in a range between a dark state and a light state, with a three-phase line between a first fluid, a second fluid and a first support plate of the picture element being completely in the inactive area for a first applied voltage corresponding to the dark state.

Abstract: Electrowetting apparatus including a compound comprising a plurality of colorant moieties and a linker. The plurality of colorant moieties includes a first colorant moiety having a first net dipole and a second colorant moiety having a second net dipole, wherein the plurality of colorant moieties are linked by and disposed around the linker so that the first net dipole and the second net dipole at least partially cancel each other.

Abstract: A method of manufacturing a support plate including: providing a layer of a first material; providing, using an applied voltage, a layer of a second material on a surface of the layer of the first material; and exposing a part of the surface by removing a part of the layer of the second material.

Abstract: An electrowetting display device comprising a first fluid; a second fluid immiscible with the first fluid; a first support plate having: a surface adjoined by at least one of the first or second fluids, and a first electrode. The device further comprises a second support plate; a second electrode in electrical contact with the second fluid; and a third electrode. The device comprises a protrusion formed as part of at least one of the first support plate or the second support plate. The protrusion has an elongate shape extending from one to the other of the first or second support plates. The protrusion comprises a protrusion surface formed of a material which, without a voltage applied, is less wettable for the first fluid than the surface of the first support plate.

Abstract: An apparatus comprises an electrowetting display device comprising: a first support plate including: a surface; and a first electrode. The apparatus further comprises a second support plate and a protrusion having a protrusion surface. The protrusion is formed as part of at least one of the first support plate or the second support plate. The protrusion has an elongate shape extending from one to the other of the first or second support plates. At least one memory and computer program instructions are configured to, with at least one processor, control a volume of the first fluid adjoining the protrusion surface and a volume of the first fluid adjoining the surface of the first support plate, by controlling a magnitude of a first voltage applied between the first and second electrodes, and by controlling a magnitude of a second voltage applied between the third and second electrodes.

Abstract: An electrowetting display device comprising a first support plate including: a surface; and a first electrode, a second support plate; and a protrusion having a protrusion surface. The protrusion is formed as part of at least one of the first or second support plates. The protrusion has an elongate shape extending from one to the other of the first or second support plates. The device further comprises a first fluid adjoining at least one of the protrusion surface or the surface of the first support plate; a second fluid immiscible with the first fluid; a second electrode in electrical contact with the second fluid; and a third electrode.

Abstract: An electrowetting display device has first and second fluids which are immiscible with each other and a first and a second support plate, a surface of the second support plate being located for being adjoined by the second fluid. An electrode which contacts the second fluid forms part of a protrusion and is separated from the surface of the second support plate.

Abstract: An electrowetting display device comprising at least one picture element including a first fluid and a second fluid immiscible with the first fluid. A protrusion arranged through the second fluid and in contact with the first fluid provides a preferential initiation of motion of part of the first fluid in a first direction and a different part of the first fluid in a second direction.