Liquid crystal lens and display device

Patent metadata

Field	Value
Publication number	US-2018210218-A1
Application number	US-201715568283-A
Country	US
Kind code	A1
Filing date	May 16, 2017
Priority date	Jun 14, 2016
Publication date	Jul 26, 2018
Grant date	—

Abstract

The present application discloses a liquid crystal lens. The liquid crystal lens comprises: a first electrode; a second electrode; a liquid crystal layer located between the first and the second electrode; a third electrode, located at a side of the first electrode away from the liquid crystal layer; and a driving means. The driving means is configured to: in a 3D display mode, apply voltages to the first and the second electrode to generate an electric field, such that liquid crystal molecules in the liquid crystal layer are deflected to a first state and form a plurality of lens units, and when switching from the 3D display mode to a 2D display mode, apply voltages to the first and the third electrode to generate an electric field, such that the liquid crystal molecules in the liquid crystal layer are deflected to a second state and form no lens unit.

First claim

1 . A liquid crystal lens, comprising:
a first electrode; a second electrode arranged opposite to the first electrode; a liquid crystal layer located between the first electrode and the second electrode; a third electrode, located at a side of the first electrode away from the liquid crystal layer; and a driving means configured to: in a 3D display mode, apply voltages to the first electrode and the second electrode to generate an electric field, such that liquid crystal molecules in the liquid crystal layer are deflected to a first state and form a plurality of lens units, and when switching from the 3D display mode to a 2D display mode, apply voltages to the first electrode and the third electrode to generate an electric field, such that the liquid crystal molecules in the liquid crystal layer are deflected to a second state and form no lens unit.

2 . The liquid crystal lens according to claim 1 , wherein
the first electrode and the second electrode are multidomain electrodes.

3 . The liquid crystal lens according to claim 1 , further comprising:
an optical retardation film arranged at a light exit side of the liquid crystal lens.

4 . The liquid crystal lens according to claim 1 , wherein
an insulating layer is formed between the first electrode and the third electrode.

5 . The liquid crystal lens according to claim 1 , further comprising a first substrate and a second substrate arranged opposite to each other, wherein
the third electrode is arranged at a side of the first substrate close to the liquid crystal layer, and the second electrode is arranged at a side of the second substrate close to the liquid crystal layer.

6 . The liquid crystal lens according to claim 5 , wherein
the first substrate and the second substrate are transparent substrates, and the first to third electrodes are transparent electrodes.

7 . The liquid crystal lens according to claim 1 , wherein
the third electrode is a plate electrode, and the first electrode and the second electrode are strip electrodes.

8 . The liquid crystal lens according to claim 2 , wherein
the first electrode and the second electrode are dual-domain electrodes.

9 . A display device, comprising:
a display panel; and a liquid crystal lens according to claim 1 , the liquid crystal lens being arranged at a light exit side of the display panel.

10 . The display device according to claim 9 , wherein
in the 3D display mode, each lens unit in the liquid crystal lens corresponds to a row of sub-pixels in the display panel; or each lens unit in the liquid crystal lens corresponds to a column of sub-pixels in the display panel.

11 . The display device according to claim 9 , wherein
the first electrode and the second electrode are multidomain electrodes.

12 . The display device according to claim 9 , further comprising:
an optical retardation film arranged at a light exit side of the liquid crystal lens.

13 . The display device according to claim 9 , wherein
an insulating layer is formed between the first electrode and the third electrode.

14 . The display device according to claim 9 , further comprising a first substrate and a second substrate arranged opposite to each other, wherein
the third electrode is arranged at a side of the first substrate close to the liquid crystal layer, and the second electrode is arranged at a side of the second substrate close to the liquid crystal layer.

15 . The display device according to claim 14 , wherein
the first substrate and the second substrate are transparent substrates, and the first to third electrodes are transparent electrodes.

16 . The display device according to claim 9 , wherein
the third electrode is a plate electrode, and the first electrode and the second electrode are strip electrodes.

17 . The display device according to claim 11 , wherein
the first electrode and the second electrode are dual-domain electrodes.

Assignees

• Boe Technology Group Co Ltd
• Ordos Yuansheng Optoelectronics Co Ltd

Inventors

• Wei Xiangdong
• Dong Xue
• Wang Dan
• Qiu Yun
• Liu Lihua

Classifications

• H04N13/305

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• G02F1/29 Primary

  for the control of the position or the direction of light beams, i.e. deflection · CPC title

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• H04N13/359

  Switching between monoscopic and stereoscopic modes · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title