KR20170043828A - Controlling apparatus for Electrochromic device, Electrochromic module comprising the same and controlling method for Electrochromic device - Google Patents

Controlling apparatus for Electrochromic device, Electrochromic module comprising the same and controlling method for Electrochromic device Download PDF

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Publication number
KR20170043828A
KR20170043828A KR1020150143385A KR20150143385A KR20170043828A KR 20170043828 A KR20170043828 A KR 20170043828A KR 1020150143385 A KR1020150143385 A KR 1020150143385A KR 20150143385 A KR20150143385 A KR 20150143385A KR 20170043828 A KR20170043828 A KR 20170043828A
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South Korea
Prior art keywords
voltage
electrochromic device
electrochromic
initial
initial applied
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KR1020150143385A
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Korean (ko)
Inventor
이동현
한재성
이수희
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주식회사 엘지화학
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Priority to KR1020150143385A priority Critical patent/KR20170043828A/en
Publication of KR20170043828A publication Critical patent/KR20170043828A/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/19—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using electrochromic devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/028—Generation of voltages supplied to electrode drivers in a matrix display other than LCD

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

The present invention relates to a control device for an electrochromic device, an electrochromic module including the electrochromic device, and a control method for the electrochromic device. According to one aspect of the present invention, there is provided a control device for an electrochromic device, A measuring unit for measuring an open circuit voltage of the electrochromic device; And a controller configured to control the power supply unit to apply the initial applied voltage to the electrochromic device for a predetermined time when the difference between the voltage measured at the measuring unit and the initial applied voltage is equal to or greater than a predetermined value after the initial applied voltage is applied and the power supply is cut off A control device for an electrochromic device including a control unit is provided.

Description

[0001] The present invention relates to a control apparatus for an electrochromic device, an electrochromic module including the electrochromic device, and a control method for the electrochromic device,

The present invention relates to a control device for an electrochromic device, an electrochromic module including the same, and a control method for the electrochromic device.

Electrochromism is a phenomenon that reversibly changes color when electrochemically oxidizing or reducing the electrode material. A device made of an organic or inorganic electrochromic material can be manufactured as a wide area device at a low cost even though the response speed is slower than that of a conventional cathode ray tube (CRT), a liquid crystal display (LCD), or a light emitting diode (LED) Because it has low power consumption, it can be applied to many fields such as smart window, smart mirror, and electronic paper.

In particular, the development of smart windows / films using electrochromic materials can reduce the emission of fossil fuel emissions through the utilization of alternative energy, save energy, and contribute to environmental conservation. Therefore, The development of a new concept window that can control the active function such as the effect and the heat transmission can improve the quality of life by improving the residential culture and office environment.

Meanwhile, the smart window type can be divided into a passive type and an active type, and the active type can be classified into three methods according to the driving method: PDLC, SPD / DPS, and EC. Here, the EC method can have an advantage over other methods in terms of the driving method (power consumption, switching time, etc.) and cost.

On the other hand, an electrochromic device is known to have an advantage that coloration / discoloration is maintained by a memory effect function in a coloring / discoloring process. However, in this case, self-bleaching occurs due to an unbalanced ion concentration over time.

An object of the present invention is to provide a control device for an electrochromic device capable of controlling self-discoloration, an electrochromic module including the device, and a control method for the electrochromic device.

It is another object of the present invention to provide a control device for an electrochromic device capable of maintaining a constant degree of coloring, an electrochromic module including the electrochromic device, and a control method for the electrochromic device.

According to an aspect of the present invention, there is provided an electrochromic device comprising: a power supply unit for applying a voltage to an electrochromic device; A measuring unit for measuring an open circuit voltage of the electrochromic device; And a controller configured to control the power supply unit to apply the initial applied voltage to the electrochromic device for a predetermined time when the difference between the voltage measured by the measuring unit and the initial applied voltage is equal to or greater than a predetermined value after the initial applied voltage is applied and the power supply is cut off A control device for an electrochromic device including a control unit is provided.

According to still another aspect of the present invention, there is provided a method of manufacturing an electrochromic device, comprising: blocking a voltage supplied to an electrochromic device after coloring of the electrochromic device; measuring a difference between a voltage measured from the electrochromic device in an open circuit, The voltage applied to the electrochromic device for an initial applied voltage for a predetermined period of time is provided.

According to still another aspect of the present invention, there is provided an electrochromic device comprising: an electrochromic device that is colored or discolored by an applied driving voltage; A power supply unit for applying a voltage to the electrochromic device; A measuring unit for measuring a voltage of the electrochromic device; And a controller configured to control the power supply unit to apply the initial applied voltage to the electrochromic device for a predetermined time when the difference between the voltage measured at the measuring unit and the initial applied voltage is equal to or greater than a predetermined value after the initial applied voltage is applied and the power supply is cut off An electrochromic module comprising a control portion is provided.

According to still another aspect of the present invention, there is provided a method of fabricating an electrochromic device, comprising: (a) coloring an electrochromic device through an initial applied voltage; (B) measuring a voltage of the electrochromic device in a state in which a voltage applied to the electrochromic device is blocked for a predetermined time after coloring; And (c) applying an initial applied voltage to the electrochromic device when the difference between the measured voltage and the initial applied voltage is equal to or greater than a predetermined value.

As described above, according to the electrochromic device control device, the electrochromic module and the electrochromic device control method according to at least one embodiment of the present invention, it is possible to maintain the degree of discoloration of the electrochromic device at a certain level have.

1 is a cross-sectional view showing an electrochromic device related to the present invention.
2 is a graph for explaining voltage reduction in an open circuit of an electrochromic device.
3 is a configuration diagram showing a control device for an electrochromic device according to an embodiment of the present invention.

Hereinafter, a control apparatus for an electrochromic device according to an embodiment of the present invention, an electrochromic module including the same, and a control method for the electrochromic device will be described in detail with reference to the accompanying drawings.

In addition, the same or corresponding reference numerals are given to the same or corresponding reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown in the drawings are exaggerated or reduced .

FIG. 1 is a cross-sectional view showing the electrochromic device 100 related to the present invention, FIG. 2 is a graph for explaining voltage reduction during an open circuit of the electrochromic device 100, and FIG. FIG. 8 is a configuration diagram showing a control device 200 for an electrochromic device according to an embodiment. FIG.

In this document, the electrochromic device 100 represents a device that is colored or discolored by an applied driving voltage. In addition, the electrochromic device 100 may have a memory function in which coloring and discoloration are maintained when a driving voltage is applied.

1, an electrochromic device 100 includes a first electrode 110, an electrochromic layer 120 provided on the first electrode 110, an ion conductor layer 130 provided on the electrochromic layer 130, An ion storage layer 140 provided on the ion conductor layer and a second electrode 150 provided on the ion storage layer 140. [

In the electrochromic device 100, the first electrode 110 may be provided on the first substrate 101, and the second substrate 102 may be provided on the second electrode 150. The first and second substrates 101 and 102 may be formed of glass or resin. The first and second electrodes 110 and 150 and the respective layers 120, 130 and 140 may be disposed between the first substrate 101 and the second substrate 102.

The first electrode 110 and the second electrode 150 may be formed of transparent electrodes such as ITO, OMO, or metal mesh. In addition, the first electrode 110 can supply charge to the electrochromic layer 120. In addition, the electrochromic layer 120 may be formed of an electrochromic material having a color change depending on an electrical signal, for example, WO 3 , MoO 3, or the like.

The ion conductor layer 130 may include ions involved in an electrochromic reaction. The ion conductor layer 130 may include a solid electrolyte. The solid electrolyte may be an inorganic solid electrolyte or a gel-polymer electrolyte (GPE ). Here, the inorganic solid electrolyte may include LiPON or Ta 2 O 5 . Further, the inorganic solid electrolyte may be one in which components such as B, S, and W are partially added to LiPON or Ta 2 O 5 .

In addition, the ion storage layer 140 may function to collect ions having an opposite polarity to ions involved in the electrochromic reaction, and may be formed of LiNiO, NiO, V 2 O 5, or the like. In the above structure, when a voltage is applied to the first electrode 110 and the second electrode 150 and current flows from the ion storage layer 140 to the electrochromic layer 120, When the layer 120 is colored and a current flows in the opposite direction, the electrochromic layer 120 is discolored.

The electrochromic module 1 according to one embodiment of the present invention includes an electrochromic device 100 that is colored or discolored by an applied driving voltage and a control device 200 (or an electrochromic device) for controlling the electrochromic device Driving device).

After the electrochromic device 100 is colored, the control device 200 of the electrochromic device 100 cuts off the voltage supplied to the electrochromic device, and the voltage measured from the electrochromic device in the open circuit and the voltage When the difference is equal to or larger than the predetermined value, the initial applied voltage is applied to the electrochromic device 100 for a predetermined time. Through the above-described control method, it is possible to maintain a predetermined degree of coloring.

Specifically, the control device 200 of the electrochromic device includes a power supply unit 210 for applying a voltage to the electrochromic device, and a measurement unit (not shown) for measuring the open circuit voltage 2 of the electrochromic device 100 220). When the difference between the voltage measured by the measuring unit 220 and the initial applied voltage is equal to or greater than a predetermined value after the initial applied voltage is applied and the power supply is interrupted, the controller 200 applies the initial applied voltage And a control unit 230 configured to control the power supply unit 210 to apply the power for a predetermined period of time.

The first electrode 110 and the second electrode 150 of the power supply unit 210 and the electrochromic device 100 are electrically connected to each other to supply a predetermined voltage to the electrochromic device 100. At this time, a switch unit may be provided between the power supply unit 210 and the electrochromic device 100. When the control unit 230 turns on the switch unit, a voltage may be applied to the electrochromic device 100. When the switch unit is turned off, a voltage applied to the electrochromic device 100 may be cut off .

At this time, the state in which the voltage applied to the electrochromic device 100 is cut off is referred to as an open circuit state.

On the other hand, the upper area on the horizontal axis in Fig. 2 corresponds to the colored area, and the lower area on the horizontal axis corresponds to the discolored area. The open circuit 2 may be inserted for about 1000 seconds between the coloring / discoloring driving. Referring to FIG. 2, it can be seen that the voltage V decreases with the lapse of time in the open circuit 2, and the amount of voltage change is set at -1.0 V, which is the initial applied voltage or the maximum applied voltage (1) It is about -0.8 V, which is about 20% reduced.

As a result of the experiment, the value of the measured open circuit voltage decreases with time based on the voltage value applied to the electrochromic device 100 during coloring, and the value thereof is a value that is reduced by 20 to 50% As shown in FIG. Therefore, when the initial applied voltage or the maximum applied voltage (1) at the time of coloring is referred to as a first voltage, the voltage value measured in the open circuit (2) The first voltage may be further applied to the electrochromic device 100 for a predetermined time when the voltage is reduced by 20 to 40%. Here, the reduction of 20 to 40% with respect to the first voltage can be estimated as a point where a discoloration of a degree that can be recognized by a person occurs.

In the control device 200, the controller 230 may apply the initial applied voltage to the electrochromic device 100 for a predetermined time when the measured voltage is reduced to 20 to 40% of the initial applied voltage. Also, the controller 230 may apply the maximum voltage to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of the maximum voltage applied during coloring. Further, the applied voltage may be a voltage for coloring the electrochromic device.

The control device of the electrochromic device and the control method of the electrochromic device through the electrochromic module will be described below.

A method of controlling an electrochromic device according to an embodiment of the present invention includes the steps of (a) coloring an electrochromic device through an initial applied voltage, and (d) applying a voltage applied to the electrochromic device for a predetermined time after coloring, (B) measuring the voltage of the device; and (c) applying the initial applied voltage to the electrochromic device when the difference between the measured voltage and the initial applied voltage is equal to or greater than a predetermined value.

As described above, in step (c), the initial applied voltage may be applied to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of the initial applied voltage. Also, in step (c), when the measured voltage is reduced to 20 to 40% of the maximum voltage applied during coloring, the maximum voltage may be applied to the electrochromic device for a predetermined time.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

1: electrochromic module
100: electrochromic device
101, 102: substrate
110: first electrode
120: electrochromic layer
130: ion conductor layer
140: ion storage layer
150: second electrode
200: Control device of electrochromic device
210: Power supply
220:
230:

Claims (12)

A power supply unit for applying a voltage to the electrochromic device;
A measuring unit for measuring an open circuit voltage of the electrochromic device; And
A control unit configured to control the power supply unit to apply the initial applied voltage to the electrochromic device for a predetermined time when the difference between the voltage measured by the measuring unit and the initial applied voltage is equal to or greater than a predetermined value after the initial applied voltage is applied and the power supply is cut off, And a control unit for controlling the electrochromic device. The method according to claim 1,
And the controller applies the initial applied voltage to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of the initial applied voltage. The method according to claim 1,
Wherein the control unit applies the maximum voltage to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of a maximum voltage applied during coloring. The method according to claim 1,
Wherein the initial applied voltage is a voltage for coloring the electrochromic device. The voltage applied to the electrochromic device is cut off after the electrochromic device is colored, and when the difference between the voltage measured from the electrochromic device in the open circuit and the initial applied voltage in coloring is equal to or greater than a predetermined value, Is applied for a predetermined period of time. An electrochromic device that is colored or discolored by an applied driving voltage;
A power supply unit for applying a voltage to the electrochromic device;
A measuring unit for measuring a voltage of the electrochromic device; And
A control unit configured to control the power supply unit to apply the initial applied voltage to the electrochromic device for a predetermined time when the difference between the voltage measured by the measuring unit and the initial applied voltage is equal to or greater than a predetermined value after the initial applied voltage is applied and the power supply is cut off, And an electrochromic module. The method according to claim 6,
And the control unit applies the initial applied voltage to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of the initial applied voltage. The method according to claim 6,
Wherein the control unit applies the maximum voltage to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of a maximum voltage applied during coloring. The method according to claim 6,
Wherein the initial applied voltage is a voltage for coloring the electrochromic device. (a) coloring the electrochromic device through an initial applied voltage;
(b) measuring a voltage of the electrochromic device in a state in which a voltage applied to the electrochromic device is blocked for a predetermined time after coloring; And
(c) applying an initial applied voltage to the electrochromic device when the difference between the measured voltage and the initial applied voltage is greater than or equal to a predetermined value. 11. The method of claim 10,
In the step (c), when the measured voltage is reduced to 20 to 40% of the initial applied voltage, an initial applied voltage is applied to the electrochromic device for a predetermined time. 11. The method of claim 10,
Wherein in step (c), the maximum voltage is applied to the electrochromic device for a predetermined time when the measured voltage is reduced to 20 to 40% of a maximum voltage applied during coloring.

KR1020150143385A 2015-10-14 2015-10-14 Controlling apparatus for Electrochromic device, Electrochromic module comprising the same and controlling method for Electrochromic device KR20170043828A (en)

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KR1020150143385A KR20170043828A (en) 2015-10-14 2015-10-14 Controlling apparatus for Electrochromic device, Electrochromic module comprising the same and controlling method for Electrochromic device

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KR1020150143385A KR20170043828A (en) 2015-10-14 2015-10-14 Controlling apparatus for Electrochromic device, Electrochromic module comprising the same and controlling method for Electrochromic device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113686544A (en) * 2021-08-13 2021-11-23 Oppo广东移动通信有限公司 Electrochromic response time detection method and device for electrochromic device and storage medium
WO2022124719A1 (en) * 2020-12-11 2022-06-16 립하이 주식회사 Electrochromic element and electrochromic device including same
CN115148168A (en) * 2021-03-30 2022-10-04 Oppo广东移动通信有限公司 Control method, electronic device, and computer-readable storage medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022124719A1 (en) * 2020-12-11 2022-06-16 립하이 주식회사 Electrochromic element and electrochromic device including same
CN115148168A (en) * 2021-03-30 2022-10-04 Oppo广东移动通信有限公司 Control method, electronic device, and computer-readable storage medium
CN115148168B (en) * 2021-03-30 2023-10-10 Oppo广东移动通信有限公司 Control method, electronic device, and computer-readable storage medium
CN113686544A (en) * 2021-08-13 2021-11-23 Oppo广东移动通信有限公司 Electrochromic response time detection method and device for electrochromic device and storage medium

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