Patent ID: 9164273
Filing Date: 2015-10-20
Classification: G02B,G03F

Abstract:
1. An electrowetting display device comprising a first support plate, a second support plate and at least one picture element, the at least one picture element having a space formed by the first support plate, the second support plate and walls of the first support plate, the space comprising at least a first fluid and a second fluid immiscible with each other, the second fluid being at least one of electroconductive or polar and the walls including walls substantially confining first fluid for adjoining a surface of the first support plate within a picture element of the at least one picture element, the at least one picture element of the device being electrically switchable between at least a first state without an electric field applied and a second state with an electric field applied, in which in the first state the first fluid is spread out in the picture element and in the second state the first fluid is contracted near one of the walls, wherein the walls substantially confining first fluid comprise: a first wall with a side adjoining at least one of the first or second fluids, wherein the side of the first wall is angularly displaced from the surface by a first angle in the space; and a second wall with a side adjoining at least one of the first or second fluids, wherein the side of the second wall is angularly displaced from the surface by a second angle in the space, wherein a magnitude of the first angle in the space is different from a magnitude of the second angle in the space.