# US 10,481,458 B2 · Electrochromic devices on non-rectangular shapes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,458 B2 - Document ID: US10481458B2 - Status: Granted - Kind: B2 - Application number: 14/893,505 - Filed: 2014-06-17 - Published: 2016-04-07 - Granted: 2019-11-19 - Earliest claimed: 2013-06-18 - Assignees: View, Inc. - Applicants: View, Inc. - Inventors: Abhishek Anant Dixit; Todd Martin; Anshu A. Pradhan; Gordon Jack; Yashraj Bhatnagar - Web page: https://patentgrep.com/patent/US10481458B2 ## CPC - G02F 1/163: Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor - B23K 26/082: Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head - B29C 59/16: by wave energy or particle radiation {, e.g. infrared heating (B29C59/007 takes precedence)} - G01B 21/02: for measuring length, width, or thickness (G01B21/10 takes precedence) - G01B 21/20: for measuring contours or curvatures, e.g. determining profile - G02B 27/0012: {Optical design, e.g. procedures, algorithms, optimisation routines} - G02F 1/153: Constructional details - G02F 1/1533: {structural features not otherwise provided for} - B29L 2011/00: Optical elements, e.g. lenses, prisms - G02F 2201/56: Substrates having a particular shape, e.g. non-rectangular - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract This present invention relates to bus bar configurations and fabrication methods of non-rectangular shaped (e.g., triangular, trapezoidal, circular, pentagonal, hexagonal, arched, etc.) optical devices. The optical device comprises a first side, a second side, and a third side adjacent to the second side and two bus bars spanning a portion of the optical device. ## Claims ### Claim 1 A method of fabricating an optically switchable device on a non-rectangular substrate, the method comprising: (a) receiving at a laser tool the non-rectangular substrate having disposed thereon one or more layers of the optically switchable device; and (b) directing a laser spot according to two or more non-rectangular laser patterns onto a region at the periphery of the optically switchable device along two straight edges of the non-rectangular substrate to remove at least one of the one or more layers of the optically switchable device from the region without re-orienting the non-rectangular substrate as it passes through the laser tool, wherein the two straight edges meet at a corner that is not a right angle. ### Claim 2 (depends on 1) The method of claim 1, wherein the laser spot is circular in shape. ### Claim 3 (depends on 1) The method of claim 1, wherein the laser spot is directed to remove the one or more layers of the optically switchable device at the region in a single pass of the non-rectangular substrate through the laser tool. ### Claim 4 (depends on 1) The method of claim 1, wherein the laser spot is circular and the two or more non-rectangular laser patterns comprise overlapping circles formed by a circular laser spot. ### Claim 5 (depends on 1) The method of claim 1, wherein the laser spot is rectangular, and wherein the rectangular laser spot is oriented at an angle with respect to a path of the non-rectangular substrate through the laser tool when the rectangular laser spot is directed along one of the two straight edges oriented at the angle. ### Claim 6 (depends on 1) The method of claim 1, wherein the two or more non-rectangular laser patterns are differently shaped. ### Claim 7 (depends on 1) The method of claim 1, wherein the region of the non-rectangular substrate where the at least one of the one or more layers is removed comprises a bus bar pad expose area; and further comprising forming a bus bar on the bus bar pad expose area. ### Claim 8 (depends on 1) The method of claim 1, wherein the region of the non-rectangular substrate where the at least one of the one or more layers is removed comprises an edge deletion area. ### Claim 9 (depends on 1) The method of claim 1, wherein at least one of the non-rectangular laser patterns comprises lines at an angle to a path of the non-rectangular substrate through the laser tool. ### Claim 10 (depends on 1) The method of claim 1, wherein the laser spot is directed according to at least one of the two or more non-rectangular laser patterns at an angle to a path of the non-rectangular substrate through the laser tool. ### Claim 11 (depends on 1) The method of claim 1, wherein the laser spot is directed along the corner of the two straight edges. ### Claim 12 (depends on 11) The method of claim 11, wherein one of the two or more non-rectangular laser patterns bridges the corner of the two straight edges. ### Claim 13 (depends on 1) The method of claim 1, wherein the region of the non-rectangular substrate where the at least one of the one or more layers is removed includes a bus bar pad expose area or an edge deletion area, located outside a viewable area of the optically switchable device. ### Claim 14 (depends on 1) The method of claim 1, further comprising moving the substrate with the optical switchable device in a linear path through the laser tool. ### Claim 15 (depends on 1) The method of claim 1, wherein the optically switchable device is an electrochromic device having a first conductive layer, a second conductive layer, and an electrochromic layer between the first and second conductive layers. ### Claim 16 (depends on 1) The method of claim 1, wherein the region of the non-rectangular substrate where the at least one of the one or more layers is removed includes a bus bar pad expose area; and further comprising forming a bus bar on the bus bar pad expose area.