Ppg Industries Ohio, Inc.

Ppg Industries, Inc.

David L Backfisch

Phillip C Yu

Bryant P Hichwa

Nada A O'Brien

Charles R Coleman

Thomas G Rukavina

John E Smarto

John B Slobodnik

A method and apparatus for controlling a charge/discharge voltage applied to an EC device to ensure that an appropriate voltage drop across the EC device is maintained during charge and/or discharge modes of operation. The appropriate voltage drop is determined with respect to a temperature measurement proximate the EC device. The charge level of the device is monitored using a coulomb counter circuit having a topology designed to minimize interference in the operation of the EC device.

Method and apparatus for controlling an electrochromic device

A method for fabricating an electrochromic device having organic polymer substrates is described. Each substrate has a surface coated with an organic polymer primer coating onto which is deposited an electroconductive metal oxide film. An electrochromic material is deposited on one electroconductive film and a complementary electrochromic material is deposited on the other electroconductive film. The resultant two substrates are aligned with the electrochromic materials facing one another. A preformed sheet of an ion-conducting polymer is disposed between those electrochromic layers and the resulting sandwich autoclaved.

Fabrication of electrochromic device with plastic substrates

A method for preparing laminated composites such as laminated electrochromic devices is disclosed. The method involves placing a plurality of shims between first and second substrates prior to lamination using a laminating adhesive. The shims maintain uniform spacing during lamination. Devices prepared via the instant method are also disclosed.

Method for laminating a composite device

A method for sealing the circumferential edge region of a laminated electrochromic device is disclosed. The method involves cutting a circumferential groove into the edge region of the device at the ion-conducting interface of its substrates. Sealant is then applied to the groove. Sealed devices are also disclosed.

Method for sealing a laminated electrochromic device edge

A device and method for forming a composite from a pair of parts via suspension lamination is disclosed. The device bonds members with opposed mating surfaces and has a base and a vertical column mounted on the base. The vertical column supports a vertical cylinder. A vertically adjustable head assembly for holding an upper part is located at the lower end of the vertical cylinder and is operatively connected to a drive motor at the upper end of the vertical cylinder. A vacuum generator generates a negative pressure to hold the upper part on the head assembly. A nest member is located below and coaxially with the head assembly for supporting a lower part. The upper and lower parts are optionally laterally aligned via an alignment means and a curing medium is provided to the aligned parts to cure an adhesive composition which is spread over the opposed mating surfaces of the parts to form a composite of the parts. Curing occurs while the lower part is suspended from the upper part via surface tension.

Suspension lamination method and device

Describes an electrochromically active iridium oxide film of iridium, oxygen and nitrogen, wherein the ratio of atomic oxygen to iridium is from 3.2:1 to 3.4:1 and the amount of nitrogen in the film is from 11 to 13 atomic percent. Describes also an electrochromic article, e.g., a plastic article such as a plastic lens, in which the aforedescribed iridium oxide film is paired with a cathodically coloring electrochromic film, such as tungsten oxide.

Iridium oxide film for electrochromic device

A method of depositing a nitrogen-containing electrochromic iridium oxide film by sputtering iridium in an atmosphere comprising oxygen and nitrogen is disclosed for use in producing a transparent electrochromic article. The article includes electroconductive films, e.g., ITO, on two substrates, one of which has a superimposed electrochromic film, e.g., tungsten oxide, and the other of which has superimposed the iridium oxide film of the invention. An ion conductive layer between the electrochromic films completes the article.

An electrochromic article comprising plastic substrates and a method for constructing such an article are disclosed wherein two plastic substrates are coated with a primer to adhere an electroconductive metal oxide film, onto which are deposited an electrochromic film and a complementary film respectively. The two coated plastic substrates are assembled to form a cavity into which is placed a solution of monomers which are polymerized to form an ion-conducting copolymer.

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Monroeville, PA, United States of America

David L Backfisch