Gentex Corporation

Punam Giri

David A Theiste

Leroy J Kloeppner

Kelvin L Baumann

Rongguang Lin

Thomas F Guarr

Sue F Franz

Jeffrey R Lomprey

Joel C Nemes

Henry A Luten

Harlan J Byker

Kathy E Roberts

Zachary B Erno

Michael T Stephenson

Mark D Muyskens

Elizabeth M Sanford

Leroy C Kloeppner

An electro-optic element includes a first substrate defining first and second surfaces and a second substrate defining third and fourth surfaces. A first electrically conductive layer is disposed on the second surface and a second electrically conductive layer is disposed on the third surface. An electrochromic medium is disposed in a cavity between the first and second substrates, the electrochromic medium including an anodic component and a cathodic component. At least the anodic component is configured to reversibly attenuate transmittance of light having a wavelength within a predetermined wavelength range when in an electrochemically activated state. The anodic component includes a substituted ketal phenazine compound.

Electrochromic compounds and devices

An electro-optic cell for an electrochromic device includes an electrochromic medium including an electrochromic compound M having at least one reduced state and at least one oxidized state. The electrochromic compound M can act as both the anodic material and the cathodic material in the electro-optic cell. The electrochromic medium can be capable of reversibly attenuating transmittance of light having a wavelength within a predetermined range.

Single component electrochromic device having a tunable IR filter

An energy storage device includes a cathodic material in an activated state; and an anodic material in an activated state; wherein: the cathodic material is covalently attached to, or confined within, a first polymer matrix, the first polymer matrix is configured to prevent or minimize substantial diffusion of the cathodic material in the activated state; and the anodic material is a phenazine, a phenothiazine, a triphenodithiazine, a carbazole, a indolocarbazole, a biscarbazole, or a ferrocene covalently attached to, or confined within, a second polymer matrix, the second polymer matrix is configured to prevent or minimize substantial diffusion of the anodic material in the activated state.

Electrochemical energy storage devices

An electrochromic device includes a compound of Formula (I): wherein: Rand Rare individually alkyl, alkoxy, or aryloxy; R, R, R, R, R, Rare individually H, alkoxy, or aryloxy; Rand Rare individually alkoxy, or aryloxy, or where Rand Rare alkyl, Rand Rare individually H, alkoxy, or aryloxy; and Rand Rare individually alkyl or &#x2014;(CH)N(R)[X], wherein n is from 1 to 20; each Ris individually alkyl; and X is an anion.

Near-IR absorptive compounds and devices incorporating the same

An electro-optic device includes a first substrate having a first surface and a second surface, the first and second surfaces are substantially parallel to one another; a second substrate having a third surface and a fourth surface, the third and fourth surfaces are substantially parallel to one another; a sealing member; and an electrochromic medium; wherein the first and second substrates are substantially parallel to one another; the sealing member is positioned between the first substrate and second substrate to define a chamber containing the electrochromic medium; the second surface and the third surface are proximate to one another; the second surface includes a conductive layer; the third surface includes an optional second conductive layer; an active cathode region is present in one or more of the first conductive layer and the optional second conductive layer; an active anode region is present in one or more of the first conductive layer and the optional second conductive layer; and (1) the active anode region is at least partially not occluded by the active cathode region when the chamber is viewed from any vantage point perpendicular to the second surface; or (2) the active cathode region is at least partially not occluded by the active anode region when the chamber is viewed from any vantage point perpendicular to the second surface.

Isolated cell design in electro-optic devices

An energy storage device includes a cathodic material in an activated state; and an anodic material in an activated state; wherein: the cathodic material is a viologen covalently attached to, or confined within, a first polymer matrix, the first polymer matrix is configured to prevent or minimize substantial diffusion of the cathodic material in the activated state; and the anodic material is a phenazine, a phenothiazine, a triphenodithiazine, a carbazole, a indolocarbazole, a biscarbazole, or a ferrocene covalently attached to, or confined within, a second polymer matrix, the second polymer matrix is configured to prevent or minimize substantial diffusion of the anodic material in the activated state.

An electrochromic device includes an electrochromic compound with reduced intermolecular interactions resulting in uncontrolled color changes, the electrochromic represented by Formula (I): 

Electrochromic compounds with improved color stability in their radical states

Protic-soluble electrochromic materials, ion-paired electrochromic materials including protic-soluble electrochromic materials, as well as electrochromic media and electrochromic devices incorporating such materials, are provided. The use of protic solvent mixtures, especially mixtures incorporating water, allows for the use of a wider variety of substrate materials. For example, plastics that may be soluble in organic aprotic solvent systems may be used in water-based devices.

Protic-soluble organic electrochromic compounds

An imaging system is provided that includes an imager, an optical lens stack, and an electro-optic element positioned between the imager and the lens stack. The electro-optic element includes a first substantially transparent substrate defining first and second surfaces. The second surface includes a first electrically conductive layer. A second substantially transparent substrate defines third and fourth surfaces. The third surface has a second electrically conductive layer. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed within the cavity. The electro-optic medium is operable between substantially clear and substantially opaque states.

Electro-optic infrared filter

The invention relates to an electrochromic device and uses thereof, wherein the electrochromic device includes an electrochromic compound with reduced intermolecular interactions resulting in uncontrolled color changes represented by Formula (I): 

An electrochromic device including a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; and an electrochromic medium contained within a chamber positioned between the first and second substrates which includes: at least one solvent; at least one anodic electroactive material; at least one cathodic electroactive material; wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and a creep resistant crosslinked polyelectrolyte gel matrix.

Growing community of inventors

Holland, MI, United States of America

Punam Giri