3D Display Device and Driving Method Thereof

Patent metadata

Field	Value
Publication number	US-2018107011-A1
Application number	US-201615536974-A
Country	US
Kind code	A1
Filing date	Oct 24, 2016
Priority date	Jan 8, 2016
Publication date	Apr 19, 2018
Grant date	—

Abstract

A 3D display device and a driving method thereof are disclosed. The 3D display device includes a backlight module, a liquid crystal display (LCD) panel and a control module; the backlight module includes a light guide plate (LGP) and a plurality of light sources; light emitted by the plurality of light sources is at least partially incident into the LGP; a plurality of grating pixels are disposed on a surface at a light-existing side of the LGP; the LCD panel includes a plurality of light-adjusting pixels; and the control module is connected with the backlight module and the LCD panel, and configured to drive the plurality of light sources to be lit sequentially or simultaneously within a time period of one frame and adjust a gray scale of each light-adjusting pixel in the LCD panel in a time period of lighting each light source.

First claim

1 . A 3D display device, comprising a backlight module, a liquid crystal display (LCD) panel and a control module, wherein,
the backlight module comprises a light guide plate (LGP) and a plurality of light sources; light emitted by the plurality of light sources is at least partially incident into the LGP; the plurality of light sources at least comprise a first light source, a second light source and a third light source; colors of the light emitted by the first light source, the second light source and the third light source are three primary colors; a plurality of grating pixels are disposed on a surface at a light-exiting side of the LGP; each grating pixel at least comprises a first grating sub-pixel, a second grating sub-pixel and a third grating sub-pixel, which are respectively configured to filter for transmit the light emitted by the first light source, the second light source and the third light source; the LCD panel comprises a plurality of light-adjusting pixels; the light-adjusting pixels have a one-to-one correspondence with the grating pixels; and the control module is connected with the backlight module and the LCD panel, and configured to drive the plurality of light sources to be lit sequentially or simultaneously within a time period of one frame, and adjust a gray scale of each light-adjusting pixel in the LCD panel in a time period of lighting each light source.

2 . The 3D display device according to claim 1 , wherein the plurality of light sources are each disposed at a side surface of the LGP.

3 . The 3D display device according to claim 1 , wherein emergent light of at least partial grating sub-pixels in each of the grating pixels has different angles.

4 . The 3D display device according to claim 1 , wherein,
the plurality of light sources further comprise a fourth light source which emits any one of cyan (C) light, magenta (M) light and yellow (Y) light; and the grating pixel further comprises a fourth grating sub-pixel which is configured to filter for transmit the light emitted by the fourth light source.

5 . The 3D display device according to claim 4 , wherein a cross section of the LGP is a quadrangle; and the first light source, the second light source, the third light source and the fourth light source are respectively disposed at four side surfaces of the LGP.

6 . The 3D display device according to claim 1 , wherein,
the plurality of light sources further comprise a fourth light source and a fifth light source; the fourth light source emits cyan light; the fifth light source emits magenta light or yellow light; and the grating pixel further comprises a fourth grating sub-pixel and a fifth grating sub-pixel which are respectively configured to filter for transmit the light emitted by the fourth light source and the light emitted by the fifth light source.

7 . The 3D display device according to claim 6 , wherein a cross section of the LGP is a pentagon; and the first light source, the second light source, the third light source, the fourth light source and the fifth light source are respectively disposed at five side surfaces of the LGP.

8 . The 3D display device according to claim 1 , wherein
the plurality of light sources further comprise a fourth light source, a fifth light source and a sixth light source; the fourth light source emits cyan light; the fifth light source emits magenta light; the sixth light source emits yellow light; and the grating pixel further comprises a fourth grating sub-pixel, a fifth grating sub-pixel and a sixth grating sub-pixel which are respectively configured to filter for transmit the light emitted by the fourth light source, the fifth light source and the sixth light source.

9 . The 3D display device according to claim 8 , wherein a cross section of the LGP is a hexagon; and the first light source, the second light source, the third light source, the fourth light source, the fifth light source and the sixth light source are respectively disposed at six side surfaces of the LGP.

10 . The 3D display device according to claim 1 , wherein the light-adjusting pixel comprises a plurality of light-adjusting sub-pixels; and the light-adjusting sub-pixels have a one-to-one correspondence with the grating sub-pixels.

11 . A method for driving the 3D display device according to claim 1 , comprising:
driving the plurality of light sources to be lit in sequence within a time period of one frame; and adjusting the gray scale of each light-adjusting pixel in the LCD panel in a time period of lighting each light source.

12 . The driving method according to claim 11 , wherein in the case that the plurality of light sources comprise a first light source, a second light source, a third light source and a fourth light source, and the grating pixel at least comprises a first grating sub-pixel, a second grating sub-pixel, a third grating sub-pixel and a fourth grating sub-pixel, the driving method comprises:
lighting the first light source in a first time period of one frame, performing progressive scanning via gate lines of the LCD panel, and charging light-adjusting pixels via data lines, so as to make the light emitted by the first light source transmits through the first grating sub-pixels and incidents on the light-adjusting pixels corresponding to the first grating sub-pixels; lighting the second light source in a second time period of one frame, performing progressive scanning via the gate lines of the LCD panel, and charging the light-adjusting pixels via the data lines, so as to make the light emitted by the second light source transmits through the second grating sub-pixels and incidents on the light-adjusting pixels corresponding to the second grating sub-pixels; lighting the third light source in a third time period of one frame, performing progressive scanning via the gate lines of the LCD panel, and charging the light-adjusting pixels via the data lines, so as to make the light emitted by the third light source transmits through the third grating sub-pixels and incidents on the light-adjusting pixels corresponding to the third grating sub-pixels; and lighting the fourth light source in a fourth time period of one frame, performing progressive scanning via the gate lines of the LCD panel, and charging the light-adjusting pixels via the data lines, so as to make the light emitted by the fourth light source transmits through the fourth grating sub-pixels and incidents on the light-adjusting pixels corresponding to the fourth grating sub-pixels.

13 . The driving method according to claim 12 , wherein the first time period, the second time period, the third time period and the fourth time period respectively occupy one quarter of the time period of one frame.

14 . The driving method according to claim 12 , wherein in the case that the light sources further comprise a fifth light source and the grating pixel further comprises a fifth grating sub-pixel, the driving method further comprises:
lighting the fifth light source in a fifth time period of one frame, performing progressive scanning via the gate lines of the LCD panel, and charging the light-adjusting pixels via the data lines, so as to make the light emitted by the fifth light source can transmits through the fifth grating sub-pixels and incidents on the light-adjusting pixels corresponding to the fifth grating sub-pixels.

15 . The driving method according to claim 14 , wherein the first time period, the second time period, the third time period, the fourth time period and the fifth time period respectively occupy one fifth of the time period of one frame.

16

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• Lu Pengcheng
• Dong Xue
• Chen Xiaochuan
• Zhao Wenqing
• Yang Ming
• Wang Lei
• Xu Rui
• Wang Qian
• Gao Jian
• Niu Xiaochen
• Wang Haisheng
• Yang Shengji
• Li Changfeng

Classifications

• G09G3/3607 Primary

  for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127) · CPC title

• H04N13/324

  Colour aspects · CPC title

• G09G2320/068

  for control of viewing angle adjustment · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G09G3/003

  to produce spatial visual effects · CPC title