CN111596492A

CN111596492A - Light control glass and light control device

Info

Publication number: CN111596492A
Application number: CN202010490726.3A
Authority: CN
Inventors: 吴贲华; 路林; 王银茂; 温建林; 朱海平
Original assignee: Jiangsu Tiemao Glass Co Ltd
Current assignee: Jiangsu Tiemao Glass Co Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-08-28

Abstract

The application discloses light control glass, including light control glass body, first electrode, second electrode, third electrode and fourth electrode. The dimming glass body is provided with a first conducting layer and a second conducting layer. The first electrode is disposed on the first conductive layer opposite to the second electrode and extends along the first direction. The third electrode is disposed on the second conductive layer opposite to the fourth electrode and extends along the second direction. Wherein the second direction is perpendicular to the first direction. The dimming glass body is heated through the four electrodes arranged in a crossed mode, and the problem that the response speed of the dimming glass is reduced in a low-temperature environment to cause the color to become light is solved.

Description

Light control glass and light control device

Technical Field

The application relates to the technical field of dimming glass, in particular to dimming glass and a dimming device.

Background

In order to reduce the sense of obstruction for passengers, public transportation facilities maintain the window glass in a transparent state so that the passengers can view the external environment. However, in some conditions where sunlight is strong, passengers near the window may be overexposed, and therefore, it may be desirable to use light-adjustable glass to reduce light transmission. At present, there is an integrated light control glass for a side window glass of a track traffic, liquid crystal molecules in the light control glass deflect according to a required direction by applying a voltage, however, liquid crystal molecules in the light control glass are limited by physical limitations, and under a low-temperature environment, the viscosity of the liquid crystal molecules is increased to cause a reduction in response speed of the light control glass, so that the light control effect of the light control glass is not enough to meet the demand.

Disclosure of Invention

The embodiment of the application provides a dimming glass and a dimming device, and solves the problem that the dimming effect is insufficient due to the fact that the liquid crystal response speed of the dimming glass is reduced in a low-temperature environment at present.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, a light control glass is provided, which comprises a light control glass body, a first electrode, a second electrode, a third electrode and a fourth electrode. The dimming glass body is provided with a first conducting layer and a second conducting layer. The first electrode and the second electrode are oppositely arranged on the first conductive layer and extend along the first direction. The third electrode is disposed on the second conductive layer opposite to the fourth electrode, and each extends along the second direction. Wherein the second direction is perpendicular to the first direction.

In a second aspect, a dimming device is provided, comprising a controller and a dimming glass using the first aspect. The controller has a first positive electrode, a second positive electrode, a first negative electrode, and a second negative electrode. The first electrode in the light-adjusting glass is electrically connected with the first positive electrode, the second electrode is electrically connected with the first negative electrode, the third electrode is electrically connected with the second positive electrode, and the fourth electrode is electrically connected with the second diode power supply. Wherein the first conductive layer generates heat by inputting a voltage to the first electrode and the second electrode through the first positive electrode and the first negative electrode or/and the second conductive layer generates heat by inputting a voltage to the third electrode and the fourth electrode through the second positive electrode and the second negative electrode.

In this application embodiment, the dimming glass of this application applys voltage through the electrode pair that alternately sets up to the conducting layer, lets the conducting layer generate heat and heats dimming glass, makes the liquid crystal molecule in the dimming glass can use under microthermal environment to reach good dimming effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic view of a light control glass according to a first embodiment of the present application:

FIG. 2 is a schematic view of an electrode according to a first embodiment of the present application;

fig. 3 is a schematic diagram of a dimming device according to a second embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Please refer to fig. 1, which is a schematic view of a light control glass according to a first embodiment of the present application. As shown in the figure, the light control glass 1 includes a light control glass body 100, a first electrode 200, a second electrode 300, a third electrode 400 and a fourth electrode 500. The dimming glass body 100 has a first conductive layer 111 and a second conductive layer 112. The first electrode 200 is disposed on the first conductive layer 111 opposite to the second electrode 300 and extends along the first direction DR 1. The third electrode 400 is disposed on the second conductive layer 112 opposite to the fourth electrode 500, and extends along the second direction DR 2. Wherein the second direction DR2 is perpendicular to the first direction DR 1. That is, if a voltage is applied to the first electrode 200 and the second electrode 300, the first electrode 200, the first conductive layer 111, and the second electrode 300 may form a conductive loop, and the impedance in the conductive process will generate heat due to friction between electrons and crystal lattices, so that the first conductive layer 111 generates heat, and the heat generated by the first conductive layer 111 heats the entire light control glass body 100, so that the temperature of the light control glass body 100 is adjusted to a normal temperature, and adverse effects (for example, a slow response speed of liquid crystals) caused by a low temperature are reduced. On the other hand, when a voltage is applied to the third electrode 400 and the fourth electrode 500, the third electrode 400, the second conductive layer 112 and the fourth electrode 500 may form a conductive loop, and the same effect is obtained.

More specifically, the light-adjusting glass body 100 further includes a first glass layer 121, a first insulating layer 131, a liquid crystal layer 140, a second insulating layer 132 and a second glass layer 122, wherein the first glass layer 121, the first conductive layer 111, the first insulating layer 131, the liquid crystal layer 140, the second insulating layer 132, the second conductive layer 112 and the second glass layer 122 are sequentially stacked from top to bottom. The first glass layer 121 is disposed on the first conductive layer 101, and the second glass layer 122 is disposed on the second conductive layer 112, so as to block moisture or dust from air from entering the light-adjusting glass body 100, thereby prolonging the service life of the device. The first conductive layer 111 and the second conductive layer 112 are used to control the liquid crystal layer 140 between the two layers, so that the liquid crystal layer has good electrical characteristics while transmitting light, such as indium tin oxide, indium antimony oxide, and the like. The first insulating layer 131 is disposed between the first conductive layer 111 and the liquid crystal layer 140. The second insulating layer 132 is disposed between the liquid crystal layer 140 and the second conductive layer 112. The two insulating layers are used to avoid electrical connection between the conductive layer and the liquid crystal layer 140, although in the embodiment, the first insulating layer 131 and the second insulating layer 132 are a single layer of film, in other embodiments, the first insulating layer 131 and the second insulating layer 132 may be a multi-layer structure, and each layer is composed of different materials.

Please refer to fig. 2, which is a schematic diagram of an electrode according to a first embodiment of the present application. As shown, the first electrode 200 includes a first conductor 210 and a first connector 220, the first conductor 210 is disposed on the first conductive layer 111, one end of the first connector 220 is connected to the first conductor 210, and the first connector 220 extends along the second direction DR 2. The second electrode 300 includes a second conductor 310 and a second connection body 320, the second conductor 310 is disposed on the first conductive layer 111, one end of the second connection body 320 is connected to the second conductor 310, and the second connection body 320 extends along the second direction DR 2. The third electrode 400 includes a third conductor 410 and a third connection body 420, the third conductor 13 is disposed on the second conductive layer 112, one end of the third connection body 420 is connected to the third conductor 410, and the third connection body 420 extends along the first direction DR 1. The fourth electrode 500 includes a fourth conductor 510 and a fourth connection body 520, the fourth conductor 510 is disposed on the second conductive layer 112, one end of the fourth connection body 520 is connected to the fourth conductor 510, and the fourth connection body 520 extends along the first direction DR 1. In this embodiment, the first conductor 210 may be a metal conductor, such as a metal with good conductivity, e.g., gold, silver, copper, etc., and the first connector 220 may be a metal conductor of the same material and connected to the first conductor 210 by soldering. However, in other embodiments, the first conductor 210 and the first connecting body 220 may be made of different materials, for example, the first conductor 210 is made of graphite with good conductive effect, the first connecting body 220 is a metal wire, and the two are bonded by using a conductive adhesive. In addition, the second electrode 300, the third electrode 400 and the fourth electrode 500 may adopt the same configuration as the first electrode 200, and thus, the description thereof is omitted.

Please refer to fig. 3, which is a schematic diagram of a dimming device according to a second embodiment of the present application. As shown, the light control device 2 includes a controller 600 and a light control glass 1. The controller 600 has a first positive electrode 611, a second positive electrode 621, a first negative electrode 612, and a second negative electrode 622. The light control glass 1 uses the light control glass of the first embodiment, wherein the first electrode 200 is electrically connected to the first positive electrode 611, the second electrode 300 is electrically connected to the first negative electrode 612, the third electrode 400 is electrically connected to the second positive electrode 621, and the fourth electrode 500 is electrically connected to the second negative electrode 622. The controller 600 controls the heating and dimming actions of the dimming glass 1.

When the light modulation device 2 is used in a low temperature environment, the controller 600 selectively inputs a voltage to the first electrode 200 and the second electrode 300 through the first positive electrode 611 and the first negative electrode 612, so that the first conductive layer 111 generates heat; alternatively, the controller 600 selects to input a voltage to the third electrode 400 and the fourth electrode 500 through the second positive electrode 621 and the second negative electrode 622, so that the second conductive layer 112 generates heat. Or the controller 600 simultaneously inputs voltages to the first electrode 200 and the second electrode 300 through the first positive electrode 611 and the first negative electrode 612 and inputs voltages to the third electrode 400 and the fourth electrode 500 through the second positive electrode 621 and the second negative electrode 622, respectively, so that the first conductive layer 101 and the second conductive layer 102 simultaneously generate heat. The heat generated by at least one of the first conductive layer 111 and the second conductive layer 112 can raise the temperature of the liquid crystal layer 140 and also raise the temperature of the entire light control glass, so that the response speed of the light control glass is the same as the response speed of the light control glass used in a normal environment.

After the response speed of the light control glass is normal, the controller 600 inputs a voltage to the first electrode 200 and the fourth electrode through the first positive electrode 611 and the second negative electrode 622, so that the color change degree of the light control glass body can be changed according to the magnitude of the voltage. By inputting voltage to the third electrode 400 and the second electrode 300 through the second positive electrode 621 and the first negative electrode 612, the degree of color change of the light control glass body can be changed according to the magnitude of the voltage. That is, by applying voltages to the different electrodes by the controller 600, it is possible to selectively heat the dimming glass or change the degree of discoloration of the dimming glass.

More specifically, the controller 600 inputs a dc voltage of 12V to the first positive electrode 611 and the first negative electrode 612, thereby realizing the electric heating function of the first conductive layer 111. Alternatively, a dc voltage of 12V is input to the second positive electrode 621 and the second negative electrode 622, and an electric heating function of the second conductive layer 112 can be realized. In addition, in some embodiments, the two conductive layers may also be heated simultaneously to more uniformly heat the privacy glass. The voltage level may be changed according to actual use, for example, when the size of the light control glass 1 is larger, a higher voltage (for example, a dc voltage larger than 12V) may be applied to maintain the light control glass 1 at a stable temperature.

In addition, by the controller 600, an alternating-current square wave voltage of 0-25V is input to the second positive electrode 621 and the first negative electrode 612, so that the visible light transmittance can be changed between 32% and 0%, in other words, when the voltage is 0V, the visible light transmittance can reach about 32%; at a voltage of 25V, a transmittance of less than 1% can be achieved. Therefore, the light control device 2 of the present embodiment can control the light control glass 1 by the controller 600 to heat the light control glass to a desired operating temperature in a low temperature environment, thereby performing uniform and stable light control.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A light control glass, comprising:

the light-adjusting glass body is provided with a first conducting layer and a second conducting layer;

a first electrode disposed on the first conductive layer and extending in a first direction;

a second electrode disposed on the first conductive layer and extending along the first direction, the second electrode being opposite to the first electrode;

a third electrode disposed on the second conductive layer and extending along a second direction, the second direction being perpendicular to the first direction; and

a fourth electrode disposed on the second conductive layer and extending along the second direction, the fourth electrode being opposite to the third electrode.

2. The privacy glass of claim 1, wherein the privacy glass body further comprises

A liquid crystal layer disposed between the first conductive layer and the second conductive layer;

a first insulating layer disposed between the first conductive layer and the liquid crystal layer; and

and the second insulating layer is arranged between the second conducting layer and the liquid crystal layer.

3. The privacy glass of claim 2, wherein the privacy glass body further comprises:

a first glass layer disposed on the first conductive layer; and

and the second glass separation layer is arranged on the second conducting layer.

4. The privacy glass of claim 1, wherein the first electrode comprises a first conductor disposed on the first conductive layer and a first connector having one end connected to the first conductor, the first connector extending along the second direction;

the second electrode comprises a second conductor and a second connecting body, the second conductor is arranged on the first conducting layer, one end of the first connecting body is connected with the second conductor, and the second connecting body extends along the second direction;

the third electrode includes a third conductor and a third connecting body, the third conductor is disposed on the second conductive layer, one end of the third connecting body is connected to the third conductor, and the third connecting body extends along the first direction;

the fourth electrode includes a fourth conductor and a fourth connecting body, the fourth conductor is disposed on the second conductive layer, one end of the fourth connecting body is connected to the fourth conductor, and the fourth connecting body extends along the first direction.

5. A dimming device, comprising:

a controller having a first positive electrode, a second positive electrode, a first negative electrode, and a second negative electrode; and

the privacy glass of any one of claims 1-7, wherein the first electrode is electrically connected to the first positive electrode, the second electrode is electrically connected to the first negative electrode, the third electrode is electrically connected to the second positive electrode, and the fourth electrode is electrically connected to the second negative electrode;

wherein the first conductive layer is caused to generate heat by inputting a voltage to the first electrode and the second electrode through the first positive electrode and the first negative electrode or/and the second conductive layer is caused to generate heat by inputting a voltage to the third electrode and the fourth electrode through the second positive electrode and the second negative electrode.

6. The dimming device according to claim 5, wherein a voltage is input to the first electrode and the fourth electrode through the first positive electrode and the second negative electrode, and a degree of the discoloration of the dimming glass body is determined according to a magnitude of the voltage.

7. The dimming device according to claim 5, wherein a voltage is input to the third electrode and the second electrode through the second positive electrode and the first negative electrode, and a degree of the discoloration of the dimming glass body is determined according to a magnitude of the voltage.

8. The dimming apparatus of claim 5, further comprising a power supply, the power supply being electrically connected to the controller.