CN2750343Y - Electrochromism glass component - Google Patents

Abstract

The utility model relates to an electrochromism glass element which comprises a piece of first conducting glass, a piece of second conducting glass opposite to the first conducting glass and a conducting macromolecule thin layer formed on the surface opposite to the first conducting glass of the second conducting glass, wherein the a gas chamber used for containing working gas is arranged between the conducting macromolecule thin layer and the first conducting glass. The electrochromism glass element has the advantages of compact and simple structure, convenient operation and low cost and solves the problems of complicated structure, high cost, etc. of electrochromism glass in the prior art.

Description

Electrochromic glass element

【Technical field】

The utility model relates to a color-changing glass element, in particular to an electrochromic glass element.

【Background technique】

Electrochromic glass, also known as dimming glass, can adjust the light transmittance by changing the magnitude of the current, and realize the adjustment of the transparency or color of the glass.

At present, an electrochromic glass commonly used in the industry is made by placing a polymer with dispersed liquid crystals between two pieces of glass coated with a transparent conductive film, and then interlayering it. Two conductive films are equivalent to two planar electrodes.

The principle of dimming is: in the natural state (power off without electric field), the arrangement of the internal liquid crystal is irregular, the refractive index of the liquid crystal is lower than that of the polymer outside, and the incident light is scattered on the polymer, showing milky white , that is, opaque. When an electric field (energized) is applied, the liquid droplets in the polymer with diffusely distributed liquid crystals are rearranged, and the liquid crystals change from disordered arrangement to directional and ordered arrangement, so that the refractive index of the liquid crystal is equal to that of the polymer, and the incident light is completely can pass through to form a transparent state.

However, this kind of electrochromic glass uses liquid crystal as the electrochromic medium, and the cost is too high to be popularized and applied in a large area. Moreover, it can only realize the dimming effect of glass from transparent to opaque, and the color change is limited to milky white, which is too single.

Another type of electrochromic glass in the prior art is formed by sequentially forming five layers of films such as indium tin oxide-tungsten trioxide-tantalum pentoxide-nickel oxide-indium tin oxide between two glasses. Wherein, the indium tin oxide layer is an electrode, tungsten trioxide is an electrochromic medium, tantalum pentoxide forms an ion conduction layer, and the nickel oxide layer is an ion storage film. Under the action of an electric field, when ions enter the tungsten trioxide layer from the nickel oxide layer through the tantalum pentoxide layer, a discoloration effect occurs, and the transmittance of visible light can change from 10% to 70%.

However, the structure of this electrochromic glass is complicated, and the cost is still too high.

In view of this, it is necessary to provide an electrochromic glass element with a simple structure.

【Content of utility model】

In order to solve the problem of the complex structure of the electrochromic glass element in the prior art, the purpose of the utility model is to provide an electrochromic glass element with a simple structure.

In order to achieve the above object, the utility model provides an electrochromic glass element, which includes: a first conductive glass; a second conductive glass opposite to it; and a Conductive polymer film layer on the surface. Wherein, a gas chamber for accommodating working gas is provided between the conductive polymer film layer and the first conductive glass.

The material of the conductive polymer film layer is one or more substances selected from polyacetylene, polypyrrole and polyaniline.

The working gas can be an oxidizing gas, such as oxygen. It may also be a reducing gas, such as hydrogen. The first and second conductive glasses respectively include a transparent conductive layer. It is preferably composed of indium tin oxide.

The air chamber is provided with an air inlet and an air outlet. It is preferable to be connected with an air extraction device at the air outlet.

Compared with the prior art, the electrochromic glass element of the utility model is provided with a conductive polymer film layer and a gas chamber containing working gas between two conductive glasses, and has a simple and compact structure. After a certain voltage is applied, the chemical reaction between the conductive polymer material and the working gas is used to change the band gap of the conductive polymer material, so that the entire glass element formed can change into a variety of different colors, and the operation is simple. Production costs are reduced.

【Description of drawings】

Fig. 1 is a schematic cross-sectional structure diagram of the electrochromic glass element of the present invention.

【Detailed ways】

The utility model will be described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1, the electrochromic glass element 3 provided by the present invention includes: a first conductive glass 30, a second conductive glass 32 opposite to it and formed on the first and second conductive glass 30, 32 between a conductive polymer film layer 34 and a gas chamber 36 for containing the working gas. The side wall (not shown) of the electrochromic glass element 3 is encapsulated by glass, metal or plastic.

Wherein, the first and second conductive glasses 30, 32 are glass plates provided with a transparent conductive layer 301, 321 respectively. The transparent conductive layers 301, 321 are respectively formed on opposite surfaces of the first and second conductive glasses 30, 32, and are preferably made of indium tin oxide.

The conductive polymer film layer 34 is attached to the transparent conductive layer 321 of the second conductive glass 32 . The material is one or more substances selected from polyacetylene, polypyrrole and polyaniline. Its thickness can be set according to actual needs.

The conductive polymer material is different from the general polymer compound mixed with metal powder or conductive grade carbon black. Its main feature is that the main chain of the polymer is formed by alternating single-double bond conjugation. The conjugated polymer generates a new energy level between the energy band gaps through the electrochemical redox charge transfer, that is, the electron transfer energy is reduced and a new absorption spectrum is formed, thereby producing an electrochromic phenomenon. For example, polyaniline has more than two different redox states, so it has multiple electrochromic properties. Its color range is transparent yellow-green-dark blue-black, and it has obvious contrast in color display. In addition, for the electrochromic principle and performance of related conductive polymer materials, please refer to the paper "Conductive Polymers: New Generation Optoelectronic Materials" published by Chen Shouan in the Bimonthly Physics, Volume 23, Issue 2, published in April 2001.

The gas chamber 36 is a cavity surrounded by the conductive polymer film layer 34 , the first conductive glass 30 and the sidewalls of the electrochromic glass element 3 for containing the working gas. The working gas can be an oxidizing gas, such as oxygen, or a reducing gas, such as hydrogen. Of course, the working gas can also be a mixed gas composed of multiple oxidizing gases or multiple reducing gases. The required working gas should be selected according to the selected conductive polymer material. In addition, the air chamber 36 is provided with an air inlet 38 and an air outlet 39 on the side wall, which are used for the inlet and outlet of the working gas. And a miniature air extraction device can be further connected at the air outlet to increase the exhaust speed.

In addition, those skilled in the art should know that the transparent conductive layers 301 , 321 of the first and second conductive glasses 30 , 32 should be provided with leads for applying voltage. The quantity and position of the air inlet 38 and the air outlet 39 can be designed separately according to actual needs, and are not necessarily limited to this embodiment.

The electrochromic glass element of the utility model is provided with a conductive polymer film layer and a gas chamber containing working gas between two conductive glasses, and has a simple and compact structure. After a certain voltage is applied, the chemical reaction between the conductive polymer material and the working gas is used to change the band gap of the conductive polymer material, so that the entire glass component formed changes in different colors. The operation is simple and the production cost is low. reduce.

In summary, the utility model has indeed met the requirements of a utility model patent, and a patent application has been filed according to law. The above description is only a preferred embodiment of the present utility model, and those skilled in the art can also make other changes within the inventive spirit of the present invention; certainly, these changes done according to the inventive spirit of the present invention should all be included in the present utility model. within the scope of the claimed protection.

Claims (9)

1. electrochromic glass component, it comprises: one first electro-conductive glass, second electro-conductive glass relative with it is with a conductive polymer film layer that is formed on the surface of relative this first electro-conductive glass of this second electro-conductive glass; It is characterized in that, be provided with an air chamber that is used to hold working gas between this conductive polymer film layer and this first electro-conductive glass.

2. electrochromic glass component as claimed in claim 1 is characterized in that, the material of described conductive polymer film layer is selected from one or more materials of polyacetylene, polypyrrole, polyaniline.

3. electrochromic glass component as claimed in claim 1 is characterized in that, described working gas is oxidizing gas or reducibility gas.

4. electrochromic glass component as claimed in claim 3 is characterized in that, described oxidizing gas is an oxygen.

5. electrochromic glass component as claimed in claim 3 is characterized in that, described reducibility gas is a hydrogen.

6. electrochromic glass component as claimed in claim 1 is characterized in that, described first and second electro-conductive glass comprises a transparency conducting layer respectively.

7. electrochromic glass component as claimed in claim 6 is characterized in that described transparency conducting layer is made of indium tin oxide.

8. electrochromic glass component as claimed in claim 1 is characterized in that described air chamber has air intake opening and gas outlet.

9. electrochromic glass component as claimed in claim 8 is characterized in that, described gas outlet is provided with one and takes out the Gas device.