3D display device and driving method thereof

Patent metadata

Field	Value
Publication number	US-10523927-B2
Application number	US-201515327647-A
Country	US
Kind code	B2
Filing date	Dec 23, 2015
Priority date	Aug 20, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A 3D display device and a driving method thereof are disclosed. The 3D display device comprises a grating and a display panel, and the grating is divided into a bright grating cell and a dark grating cell, the grating comprising a substrate and a plurality of OLED light-emitting devices arranged on the substrate. At least a part of the plurality of OLED light emitting devices emit light to apply the operating voltage to form the bright grating cells, and the non-light emitting OLED light-emitting devices form the dark grating cells. The 3D display device is for displaying a 3D picture.

First claim

We claim:

1. A 3D display device, comprising a grating and a display panel, the grating being divided into a bright grating cell and a dark grating cell, wherein the grating comprises:
a substrate; and
a plurality of OLED light emitting devices arranged on the substrate,
wherein at least a first part of the plurality of OLED light-emitting devices which emit light when an operating voltage is applied thereto form the bright grating cell, and a second part of the plurality of OLED light-emitting devices which do not emit light form the dark grating cell;
wherein the grating comprises a first grating layer, an insulating layer and a second grating layer which are laminated on the substrate, the first grating layer comprises a first electrode layer, a first light-emitting layer and a second electrode layer laminated together, and the second grating layer comprises a third electrode layer, a second light-emitting layer and a fourth electrode layer laminated together; and
wherein,
the first electrode layer includes a plurality of first strip electrodes longitudinally extending and spaced-apart from each other, the first strip electrodes being connected to a first voltage signal terminal for providing a first voltage signal,
the third electrode layer includes a plurality of second strip electrodes longitudinally extending and spaced-apart from each other, the second strip electrodes each connected to a second voltage signal terminal for providing a second voltage signal, and a vertical projection of the second strip electrodes on the substrate and a vertical projection of the first strip electrodes on the substrate being alternately arranged in the transverse direction, and
the second electrode layer and the fourth electrode layer each include a plane electrode connected to a third voltage signal terminal for supplying a third voltage signal.

2. The 3D display device according to claim 1 , wherein the grating includes a plurality of repeating units, at least one control signal line and a plurality of data signal lines provided on the substrate; wherein:
each of the repeating units is provided with a control transistor and an OLED light-emitting device, an output terminal of the control transistor is connected to an anode of the OLED light-emitting device, and a cathode of the OLED light-emitting device is connected to ground;
the at least one control signal line extends in a transverse direction, and each control signal line is connected to a control terminal of the control transistor of at least one of the repeating units to control the control transistor to turn on or turn off; and
the data signal lines extend in a longitudinal direction, and each data signal line is connected to an input terminal of the control transistor of a respective one of the plurality of repeating units to cause the control transistor to output a voltage signal to the OLED light emitting device.

3. The 3D display device according to claim 2 , wherein:
the repeating units are arranged in a line and there is one control signal line;
the control signal line is connected to the control terminal of each respective control transistor of the repeating units; and
an odd-numbered column of the data signal lines is connected to the input terminal of the control transistor in an odd-numbered position and an even-numbered column of the data signal lines is connected to the input terminal of the control transistor in an even-numbered position.

4. The 3D display device according to claim 2 , wherein:
the repeating units are arranged in an array, and there are plurality of control signal lines;
an odd-numbered row of the control signal lines is connected to the control terminal of an odd-numbered row of control transistors, and an even-numbered row of the control signal lines is connected to the control terminal of an even-numbered row of control transistors; and
an odd-numbered column of the data signal lines is connected to the input terminal of an odd-numbered column of control transistors, and an even-numbered column of the data signal lines is connected to the input terminal of an even-numbered column of control transistors.

5. The 3D display device according to claim 2 , wherein:
the repeating units are arranged in an array, and there are a plurality of control signal lines,
the control signal lines include first control signal lines and second control signal lines, and one row of repeating units corresponds to the first control signal lines and the second control signal lines;
an odd-numbered row of the first control signal lines is connected to the control terminal of control transistors in an odd-numbered row and odd-numbered column, and an even-numbered row of the first control signal lines is connected to the control terminal of control transistors in an even-numbered row and even-numbered column;
an odd-numbered row of the second control signal lines is connected to the control terminal of the control transistors in the odd-numbered row and the even-numbered column, and an even-numbered row of the second control signal lines is connected to the control terminal of the control transistors in the even-numbered row and the odd-numbered column; and
an odd-numbered column of the data signal lines is connected to the input terminal of the control transistors in the odd-numbered column, and an even-numbered column of the data signal lines is connected to the input terminal of the control transistors in the even-numbered column.

6. The 3D display device according to claim 2 , wherein:
the repeating units are arranged in an array, and there are plurality of control signal lines, and the control signal lines include first control signal lines and second control signal lines, and one row of repeating units corresponds to the first control signal lines and the second control signal lines;
each of the first control signal lines is connected to the control terminals of the control transistors in odd-numbered rows and odd-numbered columns, and each of the first control signal lines is connected to the control terminals of the control transistors in even-numbered rows and even-numbered columns;
each of the second control signal lines is connected to the control terminal of the control transistors in odd-numbered rows and even-numbered columns, and each of the second control signal lines is connected to the control terminal of the control transistors in even-numbered rows and odd-numbered columns; and
an odd-numbered column of the data signal lines is connected to the input terminal of the control transistors in an odd-numbered column, and an even-numbered column of the data signal lines is connected to the input terminal of the control transistors in an even-numbered column.

7. The 3D display device according to claim 1 , wherein the OLED light-emitting devices in the grating comprise a white-d OLED light-emitting device, and the display panel comprises a color-blocking layer for at least blocking a red light, a green light and a blue light.

8. The 3D display device according to claim 1 , wherein the grating is provided on a back surface of the display panel, and the display panel is a liquid crystal display panel.

9. The 3D display device according to claim 8 , wherein the display panel includes a TFT array substrate and a color film substrate arranged opposite to each other, and a color filter substrate sandwiched between the TFT array substrate and the color film substrate, and the TFT array substrate is provided with a wire grid polarizer on a side facing away from a liquid crystal layer.

10. A method for driving a 3D display device according to claim 1 , comprising:
applying an operating voltage to at least a first part of the OLED li

Assignees

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

Inventors

• Yang Ming
• Dong Xue
• Chen Xiaochuan
• Yang Shengji
• Lu Pengcheng
• Wang Qian
• Gao Jian
• Niu Xiaochen
• Wang Lei
• Xu Rui
• Liu Yingming

Classifications

• H04N13/30

  Image reproducers (optical systems for producing stereoscopic or other three-dimensional [3D] effects G02B30/00) · CPC title

• H04N13/32 Primary

  using arrays of controllable light sources; using moving apertures or moving light sources · CPC title

• H04N2213/001

  Constructional or mechanical details · CPC title

• H04N13/312

  the parallax barriers being placed behind the display panel, e.g. between backlight and spatial light modulator [SLM] · CPC title

• H04N13/398

  Synchronisation thereof; Control thereof · CPC title