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Electrochromic module and method for driving electrochromic device

An electrochromic and driving method technology, applied in nonlinear optics, static indicators, instruments, etc., can solve the problems of device durability degradation and resistance increase, and achieve the effect of improving durability

Inactive Publication Date: 2019-05-21
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, when an excessive charge is supplied to the electrochromic layer at a level higher than required for a change in the optical characteristics of the device for reasons such as applying a potential higher than the driving voltage or further increasing the voltage application time more than necessary, the The resistance of the electrochromic layer and the electrode layer or its interface is greatly increased and the durability of the device may be deteriorated

Method used

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  • Electrochromic module and method for driving electrochromic device
  • Electrochromic module and method for driving electrochromic device
  • Electrochromic module and method for driving electrochromic device

Examples

Experimental program
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Effect test

preparation example 1

[0048] Preparation Example 1: Preparation of Electrode (Half Cell)

[0049] will contain WO 3 The coating solution of particles was applied to an ITO / PET substrate and heat-treated to form an electrochromic layer with a thickness of 300 nm. The coating solution was applied by bar coating, followed by heat treatment at 130° C. for 3 minutes. At this time, the area of ​​the electrode is set to 20 cm 2 (4cm×5cm). When the prepared half-cell was colored from a decolorized state at a voltage of 0.7 V and room temperature (RT), the light transmittance upon coloring could be changed to 70% to 80%.

preparation example 2

[0050] Preparation Example 2: Preparation of Counter Electrode (Half Cell)

[0051] An electrode was prepared in the same manner as in Preparation Example 1 except that an ion storage layer containing PB particles was formed. When the prepared half-cell was colored from a decolorized state at a voltage of 0.7 V and room temperature (RT), the light transmittance upon coloring could be changed to 70% to 80%.

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Abstract

The present application relates to an electrochromic module and a method for driving an electrochromic device, and according to one embodiment of the present application, provided is an electrochromicmodule comprising: an electrochromic device provided so as to be colored or bleached according to an applied driving voltage; a sensing unit for sensing the external temperature of the electrochromicdevice; a control unit for determining an application time of a voltage satisfying relational expression 1 below according to the sensed external temperature; and a power supply unit for applying a voltage to the electrochromic device for as long as the determined application time.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2016-0125275 filed on September 29, 2016, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present application relates to electrochromic modules and driving methods for electrochromic devices. Background technique [0004] The electrochromic device refers to a device that utilizes the characteristic that the color of an electrochromic material changes reversibly through an electrochemical oxidation / reduction reaction. Electrochromic devices have the disadvantage of slower response speed than conventional liquid crystal displays or light-emitting diodes, but have the advantages of being able to manufacture devices with a large area at a small cost and low power consumption, so they can be applied to various fields such as smart windows , smart mirror and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/19G02F1/163
CPCG02F1/163G02F2203/60G09G3/38G09G2320/041G09G2380/14G09G3/19G09G2330/028G02F1/1525G02F1/155G02F2001/1517G02F1/1516G02F1/15245
Inventor 金智渊李东炫韩在成李守熙金萨拉宋斗勋
Owner LG CHEM LTD