Electronic window and the control method of the same

Patent metadata

Field	Value
Publication number	US-9709831-B2
Application number	US-201414769168-A
Country	US
Kind code	B2
Filing date	Oct 24, 2014
Priority date	Jul 22, 2014
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

An electronic window is disclosed. The electronic window comprises: base substrate, first polarizing device, and second polarizing device disposed on the same side or on different sides of the base substrate; in an OFF state, first polarizing device configured to convert an incident light into a first polarized light and emitting the first polarized light, a polarization direction of the first polarized light is perpendicular to a polarization direction of the second polarizing device, and the second polarizing device configured to prevent the first polarized light from emitting; and in an ON state, first polarizing device configured to transmit the incident light, the second polarizing device configured to transmit the incident light or to convert the incident light into a third polarized light and emit the third polarized light, a polarization direction of the third polarized light is the same as a polarization direction of the second polarizing device.

First claim

The invention claimed is:

1. An electronic window, comprising: a base substrate and a first polarizing device and a second polarizing device locating on the same side or on different sides of the base substrate, wherein the first polarizing device comprises a first conductive layer and a second conductive layer disposed opposite to each other, a first electro-optic crystal layer and a first optical material layer are disposed between the first conductive layer and the second conductive layer, the first electro-optic crystal layer is disposed on the first conductive layer, and the first optical material layer is disposed on the first electro-optic crystal layer;
in an OFF state, the electronic window configured to prevent an incident light from passing through, wherein a first voltage is applied between the first conductive layer and the second conductive layer, the first electro-optic crystal layer is configured to convert the incident light into a first polarized light and a second polarized light under the first voltage, a polarization direction of the first polarized light is perpendicular to a polarization direction of the second polarizing device, a polarization direction of the second polarized light being the same as the polarization direction of the second polarizing device, the first optical material layer is configured to refract the first polarized light and emit the refracted first polarized light and to reflect the second polarized light so as to reflect the second polarized light back to the first electro-optic crystal layer, the second polarizing device prevents the first polarized light from emitting; and
in an ON state, the electronic window configured to enable the incident light to pass through, wherein the first polarizing device configured to transmit the incident light, no voltage is applied between the first conductive layer and the second conductive layer, the first electro-optic crystal layer is configured to transmit the incident light into the first optical material layer, and the first optical material layer is configured to transmit the incident light, the second polarizing device configured to transmit the incident light or to convert the incident light into a third polarized light and emit the third polarized light, a polarization direction of the third polarized light being the same as the polarization direction of the second polarizing device.

2. The electronic window according to claim 1 , further comprising a first power source, and the first conductive layer and the second conductive layer are connected to the first power source via a first switch;
when the first switch is close, the first power source applies the first voltage between the first conductive layer and the second conductive layer; and
when the first switch is open, the first power source does not apply a voltage between the first conductive layer and the second conductive layer.

3. The electronic window according to claim 1 , wherein an included angle of the interface between the first electro-optic crystal layer and the first optical material layer and the horizontal plane is a first set angle.

4. The electronic window according to claim 1 , wherein material for the first optical material layer comprise a crystal or a polymer material, the crystal comprising an electro-optic crystal or a non electro-optic crystal.

5. The electronic window according to claim 1 , wherein the second polarizing device is a polaroid; and
in the ON state, the second polarizing device is configured to convert the incident light into a third polarized light and emit the third polarized light.

6. The electronic window according to claim 1 , wherein the second polarizing device comprises a third conductive layer and a fourth conductive layer disposed opposite to each other, a second electro-optic crystal layer and a second optical material layer are disposed between the third conductive layer and the fourth conductive layer, the second electro-optic crystal layer is disposed on the third conductive layer, and the second optical material layer is disposed on the second electro-optic crystal layer;
in the OFF state, a second voltage is applied between the third conductive layer and the fourth conductive layer, the second electro-optic crystal layer is configured to transmit the first polarized light into the second optical material layer under the second voltage, and the second optical material layer is configured to reflect the first polarized light so as to reflect the first polarized light back to the second electro-optic crystal layer; and
in the ON state, no voltage is applied between the third conductive layer and the fourth conductive layer, the second electro-optic crystal layer is configured to transmit the incident light into the second optical material layer, and the second optical material layer is configured to transmit the incident light.

7. The electronic window according to claim 6 , further comprising a second power source, and the third conductive layer and the fourth conductive layer are connected to the second power source via a second switch;
when the second switch is close, the second power source applies a second voltage between the third conductive layer and the fourth conductive layer; and
when the second switch is open, the second power source does not apply a voltage between the third conductive layer and the fourth conductive layer.

8. The electronic window according to claim 6 , wherein an included angle of the interface between the second electro-optic crystal layer and the second optical material layer and the horizontal plane is a second set angle.

9. The electronic window according to claim 6 , wherein material for the second optical material layer comprise a crystal or a polymer material, the crystal comprising an electro-optic crystal or a non electro-optic crystal.

10. A control method of an electronic window, the electronic window comprising a base substrate and a first polarizing device and a second polarizing device disposed on the same side or on different sides of the base substrate, wherein the first polarizing device comprises a first conductive layer and a second conductive layer disposed opposite to each other, a first electro-optic crystal layer and a first optical material layer are disposed between the first conductive layer and the second conductive layer, the first electro-optic crystal layer is disposed on the first conductive layer, and the first optical material layer is disposed on the first electro-optic crystal layer;
the control method of the electronic window comprising:
in an OFF state, applying a first voltage between the first conductive layer and the second conductive layer, configuring the first electro-optic crystal layer to convert incident light into a first polarized light and a second polarized light under the first voltage, a polarization direction of the first polarized light is perpendicular to a polarization direction of the second polarizing device, a polarization direction of the second polarized light being the same as the polarization direction of the second polarizing device, configuring the first optical material layer to refract the first polarized light and emit the refracted first polarized light and to reflect the second polarized light so as to reflect the second polarized light back to the first electro-optic crystal layer, configuring the second polarizing device to prevent the first polarized light from emitting; and
in an ON state, configuring the first polarizing device to transmit the incident light, wherein no voltage is applied between the first conductive layer and the second conductive layer, configuring the first electro-optic crystal layer to transmit the in

Assignees

• Boe Technology Group Co Ltd

Inventors

• Liu Guanghui

Classifications

• E06B2009/2464

  featuring transparency control by applying voltage, e.g. LCD, electrochromic panels · CPC title

• E06B9/24

  Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) · CPC title

• G02B27/283

  used for beam splitting or combining · CPC title

• G02F1/0327

  Operation of the cell; Circuit arrangements (G02F1/05 takes precedence) · CPC title

• E06B2009/2417

  Light path control; means to control reflection · CPC title