# US 2014/0192465 A1 · Through connection of a display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192465 A1 - Document ID: US20140192465A1 - Status: Published application - Kind: A1 - Application number: 14/205,709 - Filed: 2014-03-12 - Published: 2014-07-10 - Earliest claimed: 2011-09-16 - Assignees: Liquavista B.V. - Applicants: Liquavista B.V. - Inventors: Andrea Giraldo; Paul Vermeulen - Web page: https://patentgrep.com/patent/US20140192465A1 ## CPC - H05K 7/02: Arrangements of circuit components or wiring on supporting structure - G02B 26/005: {based on electrowetting} - H05K 13/00: Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components - Y10T 29/49117: Conductor or circuit manufacturing - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An electrowetting display device comprising at least one picture element with a first support plate including a first electrical element, a second electrical element and a through-connection electrically connecting the first electrical element to the second electrical element. The through-connection is arranged outside a projected display area of the at least one picture element. ## Claims ### Claim 1 An electrowetting display device comprising at least one picture element, a first support plate, a second support plate and a space between the first support plate and the second support plate, the space including a first fluid and a second fluid immiscible with each other, the first support plate including a first electrical element, a second electrical element and a through-connection electrically connecting the first electrical element to the second electrical element, the at least one picture element comprising at least part of the second electrical element and a display area, wherein the through-connection is arranged such that, when the display area is projected through the first support plate, the through-connection is outside the projected display area. ### Claim 2 (depends on 1) The electrowetting display device according to claim 1, the at least one picture element including a first and a second picture element, wherein when the display area of each of the first and second picture elements is projected through the first support plate the through-connection is arranged between the projected display area of the first picture element and the projected display area of the second picture element. ### Claim 3 (depends on 2) The electrowetting display device according to claim 2, wherein the first and second picture elements are neighboring picture elements. ### Claim 4 (depends on 3) The electrowetting display device according to claim 3, the at least one picture element including a third and a fourth picture element, wherein when the display area of each of the third and fourth picture elements is projected through the first support plate the through-connection is arranged between the projected display areas of the first, second, third and fourth picture elements. ### Claim 5 (depends on 1) The electrowetting display device according to claim 1, the at least one picture element comprising a border area outside of the display area, wherein when the border area is projected through the first support plate at least part of the through-connection is arranged in the projected border area. ### Claim 6 (depends on 2) The electrowetting display device according to claim 2, the first and second picture elements each comprising a border area outside of the display area, wherein when the border area of each of the first and second picture elements is projected through the first support plate at least part of the through-connection is arranged in the projected border areas of the first and second picture elements. ### Claim 7 (depends on 4) The electrowetting display device according to claim 4, the third and fourth picture elements each comprising a border area outside of the display area, wherein when the border area of each of the third and fourth picture elements is projected through the first support plate at least part of the through-connection is arranged in the projected border areas of the third and fourth picture elements. ### Claim 8 (depends on 5) The electrowetting display device according to claim 5, wherein the border area of the at least one picture element comprises at least part of a wall arranged to confine the first fluid to the display area. ### Claim 9 (depends on 8) The electrowetting display device according to claim 8, wherein one or more of: the at least part of the wall is arranged to partially cover the through-connection or at least part of the wall is arranged to fully cover the through-connection. ### Claim 10 (depends on 1) The electrowetting display device according to claim 1, wherein the second electrical element is an electrode for applying an electric field in the at least one picture element and the first electrical element is arranged to provide a voltage signal to the electrode, via the through-connection. ### Claim 11 (depends on 10) The electrowetting display device according to claim 10, wherein the first electrical element is one or more of: connected to or part of one or more of: a control line, a transistor or a capacitor. ### Claim 12 (depends on 10) The electrowetting display device according to claim 10, wherein the through-connection is arranged such that when a voltage is applied to the second electrical element a fringe field is outside the display area. ### Claim 13 (depends on 1) The electrowetting display device according to claim 1, wherein the through-connection is arranged through at least one layer of the first support plate, the at least one layer separating the first electrical element and the second electrical element. ### Claim 14 (depends on 1) The electrowetting display device according to claim 1, wherein the first support plate includes a further second electrical element and a further through-connection electrically connecting the first electrical element to the further second electrical element, the at least one picture element comprising at least part of the further second electrical element, wherein the further through-connection is arranged such that, when the display area is projected through the first support plate, the further through-connection is outside the projected display area. ### Claim 15 (depends on 1) The electrowetting display device according to claim 1, wherein the first support plate includes a further first electrical element, a further second electrical element and a further through-connection electrically connecting the further first electrical element to the further second electrical element, the at least one picture element comprising at least part of the further second electrical element, wherein the further through-connection is arranged such that, when the display area is projected through the first support plate, the further through-connection is outside the projected display area. ### Claim 16 A first support plate for an electrowetting display device comprising at least one picture element having a display area, the first support plate comprising a first electrical element, a second electrical element and a through-connection electrically connecting the first electrical element to the second electrical element, wherein the through-connection is arranged such that when the first support plate is assembled in the electrowetting display device and the display area is projected through the first support plate the through-connection is outside the projected display area. ### Claim 17 (depends on 16) The first support plate according to claim 16, comprising wall material which at least partly covers the through-connection. ### Claim 18 A method of manufacturing a first support plate for an electrowetting display device having at least one picture element, the first support plate, a second support plate and a space between the first support plate and the second support plate, the space including a first fluid and a second fluid immiscible with each other, the first support plate including a first electrical element, a second electrical element and a through-connection electrically connecting the first electrical element to the second electrical element, the at least one picture element including at least part of the second electrical element and a display area, the through-connection being arranged such that, when the display area is projected through the first support plate, the through-connection is outside the projected display area, the method comprising: forming the first electrical element from electrically conductive material; forming at least one layer on the first electrical element, forming the second electrical element from electrically conductive material on said at least one layer, including forming the through-connection through the at least one layer. ### Claim 19 (depends on 18) A method according to claim 18, the at least one picture element including a first and a second picture element each having a display area, wherein the forming the through-connection includes forming the through-connection between a projected display area of the first picture element and a projected display area of the second picture element, the projected display areas of the first and second picture elements being projected through the first support plate. ### Claim 20 (depends on 18) A method according to claim 18, including forming at least part of a wall for confining the first fluid to the display area, wherein one or more of: the at least part of the wall is formed to partially cover the through-connection or the at least part of the wall is formed to fully cover the through-connection.