Various embodiments herein relate to electrochromic devices and electrochromic device precursors, as well as methods and apparatus for fabricating such electrochromic devices and electrochromic device precursors. In certain embodiments, the electrochromic device or precursor may include one or more particular materials such as a particular electrochromic material and/or a particular counter electrode material. In various implementations, the electrochromic material includes tungsten titanium molybdenum oxide. In these or other implementation, the counter electrode material may include nickel tungsten oxide, nickel tungsten tantalum oxide, nickel tungsten niobium oxide, nickel tungsten tin oxide, or another material.

An electrochromic display element is provided. The electrochromic display element includes a pair of electrodes and an electrochromic layer disposed between the electrodes. The electrochromic layer contains a solvent, a supporting electrolyte, an anodic electrochromic molecule comprising a triarylamine derivative, and a cathodic electrochromic molecule comprising a viologen derivative. Concentrations of the triarylamine derivative and the viologen derivative in the electrochromic layer are each 4 mM or more.

A transparent photovoltaic (TPV) integrated directly into the structure of an electrochromic (EC) device is beneficial in that it can eliminate at least one substrate and provide more uniform coloring. Integration of a transparent photovoltaic with an electrochromic device may also reduce or eliminate the need for an electrical bus on a substrate. In some embodiments, positioning the TPV internally with the EC cell may eliminate the need for additional substrate layers or a conductive layer on one side of the TPV cell. Integrating a PV cell into the EC device can additionally reduce the need for external wiring and an external power supply. Alternatively, the TPV can assist in charging a battery where the battery can be used to power the EC device when there is no sunlight available.

A liquid crystal display device mainly includes an upper substrate, a lower substrate, a backlight module, an electrochromic electrode layer, an electrochromic layer, a common electrode layer, a liquid crystal layer, a pixel electrode layer, a thin film transistor (TFT) switching layer, and a storage capacitor layer. Subpixels of the liquid crystal display device can successively display red, green, and blue three primary colors at different times to enhance display resolution of the liquid crystal display device. Further, since the electrochromic device has better reflectivity and contrast, the image display effect can be enhanced.

An electrochromic device includes a chamber defined by a first conductive surface of a first substrate, a second conductive surface of a second substrate, and a sealing member joining the first substrate to the second substrate; an electrochromic medium containing a blue cathodic electroactive compound and up to three anodic electroactive compounds; wherein the electrochromic medium is disposed within the chamber; the anodic electroactive compounds include a green anodic electroactive compound and one or two gray anodic electroactive compounds; and the anodic electroactive compounds include from about 8 mol % to about 15 mol % gray anodic electroactive compounds.

An easily operable dimming device includes a dimming element operable to control the transmittance thereof for light, and a first notification device operable to make a notification of a piece of information on a change in transmittance of the dimming section.

Electrochromic compositions for use in devices with electrically controlled absorption of light such as light filters of variable optical density, light emission modulators, and information image displays. The described electrochromic compositions may be used, for example, for creating light-transmitting coatings of buildings for controlling indoor microclimate by regulating the flow of natural light. Specifically, described is an exemplary organic electrochromic composition that is based on biocompatible and biodegradable components and is characterized by an increased service life, a high rate of light-transmission change. The described electrochromic compositions may be prepared in a wide range of light-absorption spectra and coating colors.

Flexible plastic screen for glasses, sunglasses or helmet faceshields with controlled light transmission based on applied electrical voltage. The screen consists of two transparent flexible conductive polymer electrodes disposed and an electrochromic layer disposed between them. The electrochromic layer is a homogeneous mixture of active electrochromic components dissolved in a polymer matrix. The electrochromic screen is operable to vary the light transmission of any wearable electro-optical devices, such as the glasses, for creating an effect of a blackout for augmented/virtual reality glasses.

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.

An electrochromic device includes a chamber defined by a first conductive surface of a first substrate, a second conductive surface of a second substrate, and a sealing member joining the first substrate to the second substrate; an electrochromic medium containing a blue cathodic electroactive compound and up to three anodic electroactive compounds; wherein the electrochromic medium is disposed within the chamber; the anodic electroactive compounds include a green anodic electroactive compound and one or two gray anodic electroactive compounds; and the anodic electroactive compounds include from about 8 mol % to about 15 mol % gray anodic electroactive compounds.