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Electrochromic device and display containing the same

A technology of electrochromic devices and electrochromic materials, which can be used in instruments, nonlinear optics, optics, etc., and can solve problems such as limited applications, unfavorable reflectivity of conventional devices, and influences.

Inactive Publication Date: 2009-02-18
内拉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main disadvantage of existing monolithic devices is that they only allow electrochromic coatings to be deposited on transparent substrates, thus limiting their applications
Also, the pixel must be viewed through at least two layers of material, thus adversely affecting the reflectivity of conventional devices

Method used

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  • Electrochromic device and display containing the same
  • Electrochromic device and display containing the same
  • Electrochromic device and display containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] A glass support substrate coated with tin-doped indium oxide (ITO) was patterned according to standard wet etching techniques. Using screen printing techniques, the following layers are deposited on the substrate in the following order:

[0053] (a) Sb-doped SnO 2 (nanostructure; paste of microparticles + binder + solvent)

[0054] (b) SiO 2 - passivated rutile (paste of micron particles + binder + solvent);

[0055] (c) ITO (paste of nano to micro particles + binder + solvent); and

[0056] (d) TiO 2 (paste of nanoparticles + polymer + binder).

[0057] The binder used in each of the above steps (a)-(d) is hydroxypropyl cellulose (KlucelEXF PHARM); the solvent is terpineol (anhydrous, Fluka).

[0058] The electrically insulating layer (b) was prepared using the following materials, according to the method described in the literature: Kay et al. in Solar Energy Materials and Solar Cells (1996), 44(1), pp 99-117.

[0059] Material

[0060] Inorganic pigment: ruti...

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Abstract

The invention concerns an electrochromic device comprising a supporting substrate (1) on which are disposed a counter electrode (3) and a working electrode (6) which is electrochromic per se and / or bears an electrochromic material on at least a portion of the external surface thereof; the electrodes being separated from each other by a layer of an electrically insulating material (4) and at least a portion of the electrochromic material of the working electrode being at the end of the device closest to the viewer. The new device allows deposition of electrochromic coatings on a variety of substrates which need not be transparent.

Description

technical field [0001] The invention relates to an electrochromic device. In particular, the present invention relates to an electrochromic device in which each element is built on a single substrate, and the substrate need not be transparent. Such devices are often referred to as monolithic devices. Background technique [0002] Electrochromic systems are based on color changes caused by electrochemical reactions in various types of metal oxides or organic or inorganic compounds. Electrochromic devices are well known in the art. The structure of a conventional electrochromic device is of the sandwich type, which in its simplest form consists of two glass substrates on the outside with counter and working electrodes between them, an electrochromic material, and an electrolyte that allows the passage of ions. Such devices are disclosed for example in EP-A-1244168; Bach, U. et al, Adv. Mater. 2002, 14, No. 11, June 5; and Cummins et al, J. Phys. Chem. B 2000, 104, 11449 -1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/155G02F1/1503G02F1/153
CPCG02F1/1521G02F2001/1555G02F2001/1536G02F1/155G02F2001/1552G02F1/1503
Inventor 弗朗科伊斯·皮乔特科尔姆·麦卡塔姆奈伊尤多·巴赫
Owner 内拉有限公司