87 results about "Electrochromic devices" patented technology

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

The invention discloses a metal grid transparent conductive film which sequentially comprises a transparent base material layer, a metal grid layer, a transition layer and a protection layer from bottom to top. The manufacturing method comprises the steps of pretreating the transparent base material, preparing the metal seed layer, performing laser direct writing patterning, performing electroplating thickening to form the metal grid layer, preparing the transition layer and the protective layer, and performing performance test and adjustment. The hexagonal honeycomb grid structure and the arc edge design are adopted, and the problem of metal grid electric field concentration is effectively solved; through the arrangement of the transition layer, the interface bonding force of the metal grid is improved; the protection layer and the transition layer cooperate to improve the corrosion resistance of the film; the problems that an existing transparent conductive material is high in cost, poor in flexibility and insufficient in interface compatibility, and an electrochromic device is concentrated in electric field, short in service life and the like are effectively solved, and the transparent conductive material can be widely applied to building intelligent windows, automobile anti-dazzle rearview mirrors, flexible display panels and other electrochromic devices and has important industrial application value.

The application discloses a physical vapor deposition device, an electrochromic device and a preparation method thereof, and relates to the technical field of electrochromic devices. The preparation method comprises the following steps: sputtering and depositing an electrochromic layer of WO3 on the surface of a first ITO layer, and the oxygen content is any value in the range of 42.5% to 52.5%; sputtering and depositing a pre-set thickness of a tungsten oxide ion conduction layer on the electrochromic layer, and the oxygen content of the corresponding chamber is any value in the range of 35% to 45%; sputtering and depositing an ion storage layer containing lithium ions on the ion conduction layer; depositing a second ITO layer on the ion storage layer, and obtaining the electrochromic device after vacuum annealing treatment and cooling treatment; wherein the deposition temperature of the second ITO layer is any value in the range of 350 DEG C to 400 DEG C, and the annealing temperature of the vacuum annealing treatment is any value in the range of 450 DEG C to 500 DEG C. The electrochromic device prepared by the application has the characteristics of high transmittance and low sheet resistance.

This application provides a color-tuning driving device and control method for an electrochromic device. A microprocessor receives control signals from a host computer, allowing the color-tuning of the electrochromic device to be programmed via the host computer to control the expected voltage waveform. This effectively solves the problem of color-tuning control stability in electrochromic devices. After receiving the control signal from the host computer, the microprocessor outputs a voltage waveform signal and a duty cycle signal. The voltage waveform signal is amplified by a power amplifier unit and then turned on by a controllable switch unit, serving as the driving voltage for the electrochromic device's color change. The duty cycle signal is input to the gate driving unit, which controls the on-time and off-time of the controllable switch unit based on the duty cycle signal, thereby controlling the on and off-time of the driving voltage of the electrochromic device. This eliminates the need for manual switching of the driving voltage, improving the stability and efficiency of color-tuning in electrochromic devices.

The invention discloses physical vapor deposition equipment, an electrochromic device and a preparation method of the electrochromic device, and relates to the technical field of electrochromic devices. The preparation method comprises the following steps: sputtering and depositing the WO3 electrochromic layer on the surface of the first ITO layer, wherein the oxygen content is any one of 42.5-52.5%; sputtering and depositing a tungsten oxide ion conducting layer with a preset thickness on the electrochromic layer, wherein the oxygen content of the corresponding chamber is any one of 35%-45%; sputtering and depositing an ion storage layer containing lithium ions on the ion conduction layer; a second ITO layer is deposited on the ion storage layer, and the electrochromic device is prepared after vacuum annealing treatment and cooling treatment; wherein the deposition temperature of the second ITO layer is any one value from 350 DEG C to 400 DEG C, and the annealing temperature of the vacuum annealing treatment is any one value from 450 DEG C to 500 DEG C. The electrochromic device prepared by the invention has the characteristics of high transmittance and low sheet resistance.

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 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.

The invention relates to the field of organic electrochromic materials, in particular to a transparent conductive material, a preparation method and application. According to the transparent conductive material, two independent carbonyl groups are introduced into a molecular main chain at the same time, accurate synergy of energy level, polarity and charge transfer performance is achieved through differential regulation and control of oxygen or nitrogen atoms, the polymer can be used as an ion storage layer, an electrode modification layer or an active functional layer in an electrochromic device, and the electrochromic device has a wide application prospect. The material can realize rapid and reversible optical modulation under a low voltage (+ / -1.0 V), has high optical contrast ([delta] T550gt, 65%), short response time (lt, 2s) and excellent cycle stability (more than 3 * 104 cycle retention rate gt, 95%), and has wide application prospects in the fields of intelligent display, energy-saving buildings and flexible electronics.

Electrochromic devices having buffer layer(s) promoting electron transfer between the second transparent electrode and second electrochromic layer while concurrently reducing or inhibiting deleterious chemical interaction between the second electrochromic layer and the second electrode and / or maintaining the conductive state of the second electrode while the device changes from a low transparency of approximately 10-20% transmittance in the visible region to a high transparency of approximately 75% to 95% transmittance with at least a 70% difference in transmittance between the low and high transmittance states and promotes longevity of the device. In certain aspects, the electrochromic devices change from a low transparency state having a gray color to a high transparency state that is substantially colorless within 20 seconds of applying the selective electrical potential to the electrochromic device. The electrochromic device is operated by electrically holding and controlling electrons going into the electrochromic device so a surface reflectivity level varies.

The present technology relates to an ionic plastic crystal comprising at least one delocalized anion paired with at least one an organic guanidine, amidine or phosphazene organic superbase-derived cation for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices, and supercapacitors. The present technology also relates to an ionic plastic crystal composition, an ionic plastic crystal-based solid electrolyte composition, an ionic plastic crystal-based solid electrolyte, an electrode material comprising the ionic plastic crystal or the ionic plastic crystal composition. Their uses in electrochemical cells and electrochemical accumulators as well as their processes of manufacturing and an NHO-stabilized intermediary ion-neutral complex are also described.

The application discloses a display device and a manufacturing method thereof. The display device comprises a first substrate, a second substrate, a barrier wall between the first substrate and the second substrate, and an electrochromic device in a containing space formed by the first substrate, the second substrate and the barrier wall. The barrier wall is formed by printing a first pre-solution on the substrate and then performing a cross-linking polymerization reaction to solidify. The barrier wall itself has certain flexibility and viscosity. The film tearing step is avoided when the barrier wall is made of double-sided adhesive material, the manufacturing efficiency is improved, and the electrolyte connection between adjacent electrochromic devices caused by the inconsistent height of the barrier wall during the film tearing process is avoided, thereby avoiding color crosstalk during coloring.

The invention relates to the technical field of electrochromism, in particular to a high-hydroxyl polyvinyl acetal flame-retardant intermediate film for electrochromism sound insulation glass. According to the specific technical scheme, the preparation method of the high-hydroxyl polyvinyl acetal flame-retardant intermediate film for the electrochromic sound insulation glass comprises the following steps: adding polyvinyl butyral with a low acetalation degree into N, N-dimethylformamide, heating, stirring and dissolving, sequentially adding a plasticizer and electrolyte salt, heating, stirring and dissolving, adding an initiator, stirring and dissolving, adding an initiator, and stirring and dissolving to obtain the high-hydroxyl polyvinyl acetal flame-retardant intermediate film for the electrochromic sound insulation glass, thereby obtaining the high-hydroxyl polyvinyl acetal flame-retardant intermediate film for the electrochromic sound insulation glass. And pouring into a mold, vacuumizing to remove bubbles, and heating to remove the solvent, thereby obtaining the flame-retardant intermediate film. The problems that an existing liquid reversible metal electrodeposition electrochromic device leaks liquid, is prone to volatilization and has potential safety hazards are solved.

This invention relates to the field of all-solid-state electrochromic devices, and discloses an all-solid-state electrochromic device and its fabrication method. The device includes a conductive substrate; an electrochromic layer disposed on the conductive substrate, the electrochromic layer comprising a nanoporous metal oxide film and electrochromic molecules chemically bonded to the surface of the nanoporous metal oxide film via anchoring groups; a gel polymer electrolyte layer covering the electrochromic layer, the gel polymer electrolyte layer being prepared from a polymer matrix, lithium salt, photoinitiator, plasticizer, and crosslinking agent; and a counter electrode covering the gel polymer electrolyte layer; wherein the electrochromic layer, the gel polymer electrolyte layer, and the counter electrode are sequentially stacked to form a sandwich structure. This invention achieves synergistic optimization of electron transfer and ion compensation processes, providing a complete implementation path for obtaining an ultrafast-response all-solid-state electrochromic device.

This invention discloses a multi-spectral compatible reflective electrochromic thin-film device with an integrated frequency-selective surface and its fabrication method. The device employs a fully flexible stacked structure, consisting of, from top to bottom: a frequency-selective surface, a transparent encapsulation dielectric layer, an electrochromic working electrode, an electrolyte layer, a counter electrode, and a bottom encapsulation film. This invention utilizes a frequency-selective surface prepared through simple solution processes such as spraying for spatial impedance matching, combined with the efficient electromagnetic dissipation of the transparent dielectric layer, significantly reducing the device thickness and achieving polarization-insensitive broadband microwave absorption. This device overcomes the radar reflection contamination problem caused by the underlying metal in traditional electrochromic devices, achieving omnidirectional stable electromagnetic protection while ensuring high transmittance in the visible light band and dynamic multi-color state control. This invention combines low cost, ultra-thin conformal design, and multi-spectral compatibility, making it suitable for integrated intelligent control and microwave protection scenarios.

The present disclosure relates to a method and apparatus for controlling a plurality of electrochromic devices, a medium, and a system. The method comprises: acquiring current state representation parameters of electrochromic devices; determining a target parameter range on the basis of the current state representation parameters of the electrochromic devices, and screening out an electrochromic device of which the state representation parameter does not fall within the target parameter range; and on the basis of a preset condition, charging or discharging the electrochromic device of which the state representation parameter does not fall within the target parameter range. The present disclosure solves the technical problem in the prior art that in an application scenario where there are a plurality of electrochromic devices, the transmittance of the electrochromic devices after a certain period of time is inconsistent, thereby affecting the visual effect of a user, and has the effects of maintaining the consistency of the transmittance of the electrochromic devices and improving user experience.

The application relates to a self-bleaching electrochromic device based on titanium dioxide and lithium iodide, and belongs to the technical field of electrochromic devices. The application discloses a self-bleaching electrochromic device based on titanium dioxide and lithium iodide, which comprises a non-polar self-bleaching electrochromic device or a polar self-bleaching electrochromic device. The application has the following advantages: (1) the cycle life of the electrochromic device is improved, and the color change contrast of the electrode in the 300nm-800nm visible light band is less than 5% after at least 4000 coloring-bleaching on-off cycle operations; (2) the electrode is self-bleached, that is, the electrode can be completely restored to the state before color change within 60s under the condition of no additional voltage; and (3) the device is non-polar, that is, both electrodes can be used as cathodes or anodes, and can normally work under the condition of an additional positive or negative voltage, and the same color change performance index is achieved.

Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage. In some cases, feedback may be used to monitor an optical transition. In these or other cases, a group of optically switchable devices may transition together over a particular duration to achieve approximately uniform tint states over time during the transition.

The embodiments herein relate to electrochromic stacks, electrochromic devices, and methods and apparatus for making such stacks and devices. In various embodiments, an anodically coloring layer in an electrochromic stack or device is fabricated to include nickel tungsten tantalum oxide (NiWTaO). This material is particularly beneficial in that it is very transparent in its clear state.

The application provides a deuterium-containing polymer and a preparation method and application thereof. The polymer is based on a polymer containing a deuterium element acceptor unit, that is, isotopes of hydrogen elements, namely deuterium atoms, are introduced into an electron acceptor unit benzene ring or anthracene ring, and a thiophene derivative is used as a terminal donor unit. The deuterium-containing polymer has good electrochromic performance, such as fast response time, good optical transmittance and good stability, and has a wide application in the preparation of electrochromic devices. The application further provides a preparation method and application of the deuterium-containing polymer.

This invention provides a method for preparing a polymer electrolyte for electrochromic devices. The method includes the following steps: Step 1, mixing raw materials containing 2-hydroxyethyl acrylate monomer, butyl acrylate monomer, and plasticizer to obtain a monomer mixture; Step 2, adding lithium salt, UV curing initiator, and crosslinking agent to the monomer mixture, and mixing evenly to obtain a precursor solution; Step 3, adding a polyether compound as a plasticizing component to the precursor solution, mixing evenly, and then initiating polymerization and crosslinking reactions to form the polymer electrolyte for electrochromic devices with a three-dimensional network structure. This invention significantly reduces the interfacial impedance of electrochromic devices, accelerates the coloring / fading response speed, and greatly extends their cycle life and environmental tolerance, providing a key material basis for the preparation of highly reliable solid-state smart color-changing devices.

A compound having a formula Lia(NixW1-x)1-yZryOb, wherein 0.5≤x<1, 0<y<1, 0<a<10, 0<b<10 and having nanocrystals dispersed in an amorphous matrix, the nanocrystals all having a d-spacing < 2.5 Å. Counter-electrode (22) comprising the compound, electrochromic device (10) comprising the counter-electrode, and double-glazing unit comprising the electrochromic device. Method for forming a layer of the compound and method for preparing the electrochromic device.

The present invention relates to a relatively thin ion-conductive thermoplastic interlayer comprising a polyvinyl acetal, an electrolyte salt, and a dispersant for use in electrochromic devices.

This invention discloses a violet derivative, its preparation method, and an electrochromic device. The violet derivative provided by this invention has the following structural formula I: Formula I Wherein: R1, R2, R3, and R 4 Each is independently selected from substituted or unsubstituted C1-C15 alkyl, C1-C15 alkoxy, C1-C15 cycloalkyl, C1-C15 aryl, C1-C15 alkenyl, and C1-C15 alkynyl groups, X ‑ For I ‑ ,Br ‑ Cl ‑ ClO4 ‑ BF4 ‑ PF6 ‑ SbF6 ‑ or TFSI ‑ Any one of the following. The violet derivative provided by this invention, by introducing a fluorenyl derivative into the violet structure, prepares "fluorenyl violet". This type of structure has multiple color states and can achieve color change under different voltages.

Disclosed are transparent articles having a substrate adapted for carrying a transparent and electrically conductive thin film thereon. The thin film includes an optical matching-stress releasing layer directly deposited on the substrate; a first antireflection layer directly deposited on the optical matching layer; a metal layer adapted for infra-red reflection and electrical conductivity directly deposited on the first antireflection layer; a second antireflection layer deposited directly on the metal layer adapted for high visibility and infra-red transmission, and an optionally visible and infra-red region transparent outermost protective layer deposited on the second antireflection layer. In certain aspects, no buffer layer is positioned between the metal layer adapted for infra-red reflection and electrical conductivity and the second antireflection layer. The transparent articles have various uses including electrodes used in electrochromic devices and as glass treatments due to unique transparent, transmissive, and reflective properties.

The application discloses a display panel and a display device, the display panel comprising: a driving substrate comprising a plurality of first driving circuits and second driving circuits; a light emitting device layer located on one side of the driving substrate; the light emitting device layer comprising a plurality of light emitting devices; an electrochromic device layer located between the driving substrate and the light emitting device layer; the electrochromic device layer comprising a plurality of electrochromic devices; the first driving circuit is electrically connected with the electrochromic device, and the second driving circuit is electrically connected with the light emitting device; the first driving circuit is used for controlling the color of the electrochromic device; the second driving circuit is used for controlling the light emitting brightness of the light emitting device; and the electrochromic device is used for reflecting the light emitted by the light emitting device towards the side of the driving substrate. The display panel disclosed by the application can improve the light emitting intensity, color gamut and uniformity of the light emitting device by controlling the reflectivity of the electrochromic layer, changing the microcavity length of the light emitting device, and improving the display effect of the display panel.

A system for detecting and correcting hardware failures in electrochromic devices is described. The system may include a memory to store data and a processing device coupled to the memory. The processing device causes a tinting state of an electrochromic device to correspond to a first tinting state, receives first sensor data corresponding to a first point in time after causing the tinting state to correspond to the first tinting state, and receives second sensor data corresponding to a second point in time that is a period of time after the first point in time. The period of time is without directing change of tinting state of the electrochromic device. In response to determining, based on the first and second sensor data, that a corrective action is to be performed for the electrochromic device, the processing device causes the corrective action to be performed for the electrochromic device.

The invention relates to the field of electrochromic devices, in particular to a vehicle-mounted photochromic glass structure and a preparation method thereof.The vehicle-mounted photochromic glass structure comprises a photochromic module, a third substrate and a laminated adhesive, and the photochromic module is used for photochromic of vehicle-mounted glass; the color changing module comprises a first substrate, a conductive layer I, an EC medium, a conductive band I, a sealant, a conductive band II, a conductive layer II and a second substrate, and the conductive layer I is deposited on the surface of the first substrate through magnetron sputtering. The EC medium is directly poured between the first substrate and the second substrate, and the first substrate and the second substrate are bonded through the circumferential sealant; the second substrate and the third substrate are combined only through one-time glue clamping, so that the number of overall interfaces is greatly reduced, meanwhile, the blocking path for water and oxygen is shorter, protection is more direct, then the harsh requirement for the water and oxygen resistance of materials is lowered, and the yield of product production is effectively improved.

This invention provides a low-haze transparent conductive film for electrochromic devices, its preparation method, and the electrochromic device itself. The preparation method includes the following steps: providing a substrate; depositing a transparent conductive layer on the substrate; wherein the transparent conductive layer is an FTO film or an AZO film; and performing chemical mechanical polishing on the transparent conductive layer to obtain the low-haze transparent conductive film. This invention applies chemically mechanically polished FTO or AZO films to electrochromic devices to replace traditional ITO films. This not only significantly reduces the raw material cost of electrochromic devices, but more importantly, the resulting transparent conductive film maintains excellent conductivity and electrochromic performance while possessing low haze and high optical clarity comparable to ITO. This effectively solves the technical challenge of balancing performance and cost in high-end optical devices using low-cost transparent conductive materials, thus broadening its application range in high-end optical devices.

The invention relates to the technical field of electrochromic devices, in particular to a high-stability sedimentary electrochromic device and a preparation method and application thereof.The preparation method comprises the steps that firstly, a C3N4-CNT electrode is prepared and spin-coated with a PTMAB material, and second ITO glass and the C3N4-CNT-PTMAB electrode are bonded through a silica gel gasket with glue on the two faces to form a sandwich structure; and then, injecting a silver-containing electrolyte from the reserved gap of the silica gel gasket through an injector, and sealing the reserved gap and the edge position by using silicon rubber to prevent liquid leakage, thereby finally preparing the transmission type electrochromic device. By adopting the steps, conversion of a counter electrode Br <-> / Br3 <-> is improved by preparing the C3N4-CNT electrode, the cycle performance is improved, excessive Br3 <-> generated in an electrolyte in the reaction process is adsorbed in time by spin-coating the phenyl trimethyl ammonium bromide material, and the self-fading phenomenon caused by self-diffusion of Br3 <-> to a working electrode is avoided.

The present invention relates to electrochromic devices and compositions, that include a polymer matrix or thickener, that includes poly((diallyldimethylammonium bis(substituted-sulfonyl)imide X−)) polymer, where each X− independently is an anion represented by the following Formula (A),With reference to Formula (A), R9 and R10 are each independently selected from fluorine, linear or branched fluorinated alkyl, or linear or branched perfluorinated alkyl.

The utility model provides an electrochromic diaphragm, an electrochromic device and an electrochromic system, and relates to the technical field of electrochromic devices. The electrochromic membrane comprises a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second substrate layer which are sequentially stacked, and further comprises a detection groove group, the detection groove group comprises a first detection groove and a second detection groove, the first detection groove penetrates from the first substrate layer to the surface of the second conductive layer, the second detection groove penetrates from the second substrate layer to the surface of the first conductive layer, and the groove bottom of the first detection groove and the groove bottom of the second detection groove are electrically connected with two electrodes of a detection device respectively. According to the electrochromic membrane, the first conductive layer and the second conductive layer at a certain point of the electrochromic membrane can be connected with two electrodes of a detection device such as a voltmeter through the detection groove group, so that voltage detection at a specified position of the electrochromic membrane is realized, and the voltage detection accuracy is improved.