Driver for electrochromic element, method for driving electrochromic element, optical filter, imaging device, lens unit, and window component
First Claim
1. A driver for an electrochromic element, the driver configured to adjust transmittance of the electrochromic element, the electrochromic element having a pair of electrodes and an electrochromic layer, which includes at least one organic electrochromic material and which is positioned between the electrodes, the driver comprising:
- an adjusting controller, wherein;
the adjusting controller, after applying a voltage V1,applies a voltage V2, the voltage V2 being higher than the voltage V1 and not lower than an oxidation voltage if the voltage V1 is equal to or lower than a back reduction voltage, or the voltage V2 being lower than the voltage V1 and not higher than the back reduction voltage if the voltage V1 is equal to or higher than the oxidation voltage, andthe adjusting controller is configured to adjust the transmittance of the electrochromic element with use of a pulse width of the voltage V2,wherein the voltage V1 is equal to or higher than the oxidation voltage, andwherein the adjusting controller adjusts the pulse width of the voltage V2 by controlling a ratio of a duration T1 to a total duration T1+T2 the duration T1being the duration for which back reduction of the organic electrochromic material proceeds and the duration T2 being the duration for which the back reduction stops.
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Accused Products
Abstract
A driver for an electrochromic element is configured to adjust the transmittance of a solution-type electrochromic element to allow the element to display a tone. The element has a pair of electrodes and at least one organic electrochromic material mixed between the electrodes. The driver has an adjusting controller configured to adjust the transmittance of the element. The adjusting controller has controller A and controller B. Controller A is configured to saturate a change in the transmittance of the element to an initial state by applying the voltage which resets the element to the initial state. Controller B is configured to control the tone of the element by applying the voltage which adjusts the transmittance of the element following controller A.
32 Citations
18 Claims
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1. A driver for an electrochromic element, the driver configured to adjust transmittance of the electrochromic element, the electrochromic element having a pair of electrodes and an electrochromic layer, which includes at least one organic electrochromic material and which is positioned between the electrodes, the driver comprising:
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an adjusting controller, wherein; the adjusting controller, after applying a voltage V1, applies a voltage V2, the voltage V2 being higher than the voltage V1 and not lower than an oxidation voltage if the voltage V1 is equal to or lower than a back reduction voltage, or the voltage V2 being lower than the voltage V1 and not higher than the back reduction voltage if the voltage V1 is equal to or higher than the oxidation voltage, and the adjusting controller is configured to adjust the transmittance of the electrochromic element with use of a pulse width of the voltage V2, wherein the voltage V1 is equal to or higher than the oxidation voltage, and wherein the adjusting controller adjusts the pulse width of the voltage V2 by controlling a ratio of a duration T1 to a total duration T1+T2 the duration T1being the duration for which back reduction of the organic electrochromic material proceeds and the duration T2 being the duration for which the back reduction stops. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A driver for an electrochromic element, the driver configured to adjust transmittance of the electrochromic element, the electrochromic element having a pair of electrodes and an electrochromic layer, which includes at least one organic electrochromic material and which is positioned between the electrodes, the driver comprising:
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an adjusting controller, wherein; the adjusting controller, after applying a voltage V1, applies voltage V2, the voltage V2 being higher than the voltage V1 and not lower than a reduction voltage if the voltage V1 is equal to or lower than a back oxidation voltage, or the voltage V2 being lower than the voltage V1 and not higher than the back oxidation voltage if the voltage V1 is equal to or higher than the reduction voltage, and the adjusting controller is configured to adjust the transmittance of the electrochromic element with use of a pulse width of the voltage V2, wherein the voltage V1 is equal to or higher than the reduction voltage, and wherein the adjusting controller adjusts the pulse width of the voltage V2 by controlling a ratio of a duration T1 to a total duration (T1 +T2) the duration T1 being the duration for which back oxidation of the organic electrochromic material proceeds and the duration T2 being the duration for which the back oxidation stops. - View Dependent Claims (13, 14, 15, 16)
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17. A method for driving an electrochromic element, the method designed to adjust transmittance of the electrochromic element, the electrochromic element having a pair of electrodes and an electrochromic layer, which includes at least one organic electrochromic material and which is positioned between the electrodes, the method comprising:
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adjusting the transmittance of the electrochromic element, the adjustment including applying a voltage V1 to the electrochromic element and then controlling the transmittance, wherein the control, following the application of the voltage V1, includes; applying a voltage V2, the voltage V2 being higher than the voltage V1 and not lower than an oxidation voltage if the voltage V1 is equal to or lower than a back reduction voltage, or the voltage V2 being lower than the voltage V1 and not higher than the back reduction voltage if the voltage V1 is equal to or higher than the oxidation voltage, and adjusting a pulse width of the voltage V2, wherein the adjusting the transmittance of the electrochromic element includes controlling a ratio of a duration T1 to a total duration (T1 +T2), the duration T1 being the duration for coloring, and the duration T2 being the duration for erasing. - View Dependent Claims (18)
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Specification