Light valve device, infrared display apparatus, dedicated spectacles and system

Patent metadata

Field	Value
Publication number	US-9829743-B2
Application number	US-201615290393-A
Country	US
Kind code	B2
Filing date	Oct 11, 2016
Priority date	Jun 28, 2013
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

The present invention discloses a light valve device, an infrared display apparatus, dedicated spectacles and a system, to realize with naked eyes, only a black picture plane without any information can be seen on a display screen, but with spectacles, effective image information can be seen on the display screen; as a result, the image display is more concealed. The light valve device comprises a first liquid crystal cell and a second liquid crystal cell that are oppositely disposed to each other; the first liquid crystal cell and the second liquid crystal cell are both formed by two substrates that are oppositely arranged, and alignment films with parallel or antiparallel alignment directions are formed on the inside the two substrates respectively; cholesteric liquid crystals with opposite arrangement and rotation directions are filled in the first liquid crystal cell and the second liquid crystal cell respectively.

First claim

What is claimed is:

1. An infrared display apparatus, comprising a display panel, wherein the display panel comprises:
an infrared light valve device;
a first substrate and a second substrate that are oppositely disposed to each other;
a pixel array located on a side of the first substrate that is adjacent to the second substrate; and
an infrared luminescence device that is set in each pixel region on the first substrate and is connected with each pixel in one-to-one correspondence,
wherein the infrared light valve device comprises a first liquid crystal cell and a second liquid crystal cell that are oppositely disposed to each other;
wherein the first liquid crystal cell and the second liquid crystal cell are both formed by two substrates that are oppositely arranged, and alignment films with parallel or antiparallel alignment directions are formed on the inside the two substrates respectively;
cholesteric liquid crystals with opposite arrangement and rotation directions are filled in the first liquid crystal cell and the second liquid crystal cell respectively; and
with a light-exiting direction of the first liquid crystal cell being the same as that of the second liquid crystal cell, and the first liquid crystal cell and the second liquid crystal cell jointly control a light transmittance of an infrared light at the light-existing direction when the infrared light valve is at work.

2. The apparatus according to claim 1 , wherein, each pixel comprises a switching device for controlling on and off of the pixel and a pixel electrode connected with the switching device;
one of a cathode and an anode of the infrared luminescence device is connected with the pixel electrode, and the other is connected with a supply source.

3. The apparatus according to claim 1 , wherein, the infrared luminescence device comprises at least two infrared organic light-emitting diodes or infrared inorganic light-emitting diodes that are connected in series with each other.

4. The apparatus according to claim 1 , further comprising:
microlens located on a light-exiting surface of the infrared luminescence device.

5. An infrared display apparatus, comprising a display panel comprising:
an infrared light valve device;
a first substrate and a second substrate, the second substrate being disposed opposite disposed to the first substrate;
a pixel array located on a side of the first substrate adjacent to the second substrate; and
an infrared luminescence device set in each pixel region on the first substrate and connected with each pixel in one-to-one correspondence,
the infrared light valve device comprising a first liquid crystal cell and a second liquid crystal cell, the second liquid crystal cell being disposed opposite to the first liquid crystal cell, the first liquid crystal cell and the second liquid crystal cell both formed by two oppositely arranged substrates with alignment films disposed on the inside the two substrates respectively;
cholesteric liquid crystals with opposite arrangement and rotation directions filling the first liquid crystal cell and the second liquid crystal cell respectively; and
with a light-exiting direction of the first liquid crystal cell being the same as that of the second liquid crystal cell, and the first liquid crystal cell and the second liquid crystal cell jointly control a light transmittance of an infrared light at the light-existing direction when the infrared light valve is at work.

6. The apparatus according to claim 5 , wherein, each pixel comprises a switching device for controlling on and off of the pixel and a pixel electrode connected with the switching device;
one of a cathode and an anode of the infrared luminescence device being connected with the pixel electrode, and the other of the cathode and the anode being connected with a supply source.

7. The apparatus according to claim 5 , wherein, the infrared luminescence device comprises at least two infrared organic light-emitting diodes or infrared inorganic light-emitting diodes that are connected in series with each other.

8. The apparatus according to claim 7 , further comprising:
microlens located on a light-exiting surface of the infrared luminescence device.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Wenbo
• Wang Dongsheng
• Dong Youmei

Classifications

• G02F2001/133607

  Physics · mapped topic

• G02F1/13473 Primary

  for wavelength filtering or for colour display without the use of colour mosaic filters · CPC title

• G02F2001/13478

  Physics · mapped topic

• G02F1/1347

  Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title

• H01L51/5028

  Electricity · mapped topic