# US 11,078,721 B2 · Multi-zone EC windows

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- Number: US 11,078,721 B2
- Document ID: US11078721B2
- Status: Granted
- Kind: B2
- Application number: 16/191,138
- Filed: 2018-11-14
- Published: 2019-06-06
- Granted: 2021-08-03
- Earliest claimed: 2012-03-13
- Assignees: View, Inc.
- Applicants: View, Inc.
- Inventors: Dhairya Shrivastava; Robin Friedman; Vinod Khosla; Rao Mulpuri; Anshu A. Pradhan
- Web page: https://patentgrep.com/patent/US11078721B2

## CPC

- G02F 1/153: Constructional details
- B23K 26/359: by providing a line or line pattern, e.g. a dotted break initiation line
- E06B 3/6715: {specially adapted for increased thermal insulation or for controlled passage of light (E06B3/66323 takes precedence; coating of glass pains C03C17/00; devices or arrangements for controlling the intensity, colour, phase, polarisation or direction of light G02F1/00)}
- E06B 3/6722: {with adjustable passage of light}
- E06B 9/24: Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00)
- G02F 1/1533: {structural features not otherwise provided for}
- G09F 23/02: the advertising matter being displayed by the operation of the article
- E06B 2009/2405: {Areas of differing opacity for light transmission control}
- E06B 2009/2464: {featuring transparency control by applying voltage, e.g. LCD, electrochromic panels}
- G09F 19/227: {on windows}
- Y10T 29/49002: Electrical device making
- 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
- E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00)
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Thin-film devices, for example, multi-zone electrochromic windows, and methods of manufacturing are described. In certain cases, a multi-zone electrochromic window comprises a monolithic EC device on a transparent substrate and two or more tinting zones, wherein the tinting zones are configured for independent operation.

## Claims

### Claim 1

An electrochromic window, comprising:
a transparent substrate;
an electrochromic device disposed on the transparent substrate, the electrochromic device comprising two transparent conductive layers and one or more layers disposed between the transparent conductive layers; and
a pair of bus bars disposed lengthwise along opposing edges of the electrochromic device, one bus bar of the pair of bus bars in electrical communication with one of the two transparent conductive layers and the other bus bar of the pair of bus bars in electrical communication with the other of the two transparent conductive layers; each bus bar varying in electrical resistivity along its length, and each bus bar configured to establish a tint gradient along the length of the electrochromic device.

### Claim 2 (depends on 1)

The electrochromic window of claim 1, wherein each of the pair of bus bars comprises a geometry and/or material composition that varies along its length.

### Claim 3 (depends on 1)

The electrochromic window of claim 1, wherein each of the pair of bus bars varies in width or thickness along its length.

### Claim 4 (depends on 1)

The electrochromic window of claim 1, wherein each of the pair of bus bars varies in composition along its length.

### Claim 5 (depends on 1)

The electrochromic window of claim 1, wherein each of the pair of bus bars varies in cross-sectional area along its length.