Three-dimensional display device

• US 10,642,054 B2
• Filed: 10/11/2017
• Issued: 05/05/2020
• Est. Priority Date: 03/24/2017
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Wang, Yanfeng, Du, Yuanxin, LV, Zhenhua, Wang, Zhidong, Xu, Xiaoling, Zhang, Hongshu, Hu, Weipin, Wei, Congcong
• Primary Examiner(s): Chang, Charles S
• Application Number:
  US15/766,597
• Publication Number:
  US 20190079306A1
• Time in Patent Office: 937 Days
• Field of Search: 349 15
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/31 involving active parallax barriers involving directional light or back-light sources G02B30/33
• CPC Class Codes: G02F 1/13 based on liquid crystals, e.g. single liquid crystal display cells
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G09F 19/12 using special optical effects
• CPC Class Codes: G09F 19/125 Stereoscopic displays; 3D displays
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: H04N 13/31 using parallax barriers

Abstract

There is disclosed a three-dimensional display device including: a micro LED display panel, a light control component arranged at a light-emitting side of the micro LED display panel, and a control component electrically connected with the micro LED display panel and the light control component respectively; where the control component is configured to control the micro LED display panel to display, and to control the light control component to generate a parallax barrier matching with the micro LED display panel, in a three-dimensional display mode. The control component controls the light control component to generate the parallax barrier matching with the micro LED display panel, while controlling the micro LED display panel to display, and when light rays emitted by the micro LED display panel pass through the parallax barrier, a three-dimensional image can be displayed, so that a three-dimensional display can be achieved on the micro LED display panel.

Claims

1. A three-dimensional display device, comprising:

a micro LED (Light-Emitting Diode) display panel, a light control component arranged at a light-emitting side of the micro LED display panel, and a control component electrically connected with the micro LED display panel and the light control component respectively, wherein;

the control component is configured to control the micro LED display panel to display, and to control the light control component to generate a parallax barrier matching with the micro LED display panel, in a three-dimensional display mode, wherein the parallax barrier comprises light-shielding strips, and light-transmitting strips, which are arranged alternately;

wherein the control component is configured to control the micro LED display panel to display in a landscape mode or in a portrait mode, according to a detected relative positional relationship of a viewer to the micro LED display panel, and to control the light control component to generate a parallax barrier matching with the landscape mode or the portrait mode, in the three-dimensional display mode;

wherein the light control component comprises;

a first substrate and a second substrate arranged opposite to each other, an electrode structure arranged between the first substrate and the second substrate, and a light adjusting layer configured to generate the parallax barrier according to voltage variation of the electrode structure;

wherein the electrode structure comprises;

a plurality of transverse strip-shaped electrodes, and a plurality of longitudinal strip-shaped electrodes, which are arranged on a side of the first substrate facing the second substrate, and which intersect in different planes with, and are insulated from each other, and a planar electrode arranged on a side of the second substrate facing the first substrate;

wherein a width of each of the light-shielding strips and a width of each of the light-transmitting strips in the parallax barrier are equal to a size Wp of a pixel, and a relationship between a distance D between the micro LED display panel and the parallax barrier generated by the light control component, and the size Wp of the pixel comprises;

D=W_p*L/(Q+W_p)

wherein D is a distance between the micro LED display panel and the parallax barrier generated by the light control component, Wp is a size of the pixel, L is a distance between a position of eyes of the viewer and the micro LED display panel, and Q is a spacing between points of view of the viewer.

2. The three-dimensional display device according to claim 1, wherein a material of the light adjusting layer is a liquid crystal material or an electrochromic material.

3. The three-dimensional display device according to claim 2, wherein a material of the light adjusting layer is a liquid crystal material;

and the light control component further comprises a plurality of transparent spacers arranged between the first substrate and the second substrate.

4. The three-dimensional display device according to claim 1, wherein the first substrate is located between the second substrate and the micro LED display panel;

or the second substrate is located between the first substrate and the micro LED display panel.

5. The three-dimensional display device according to claim 1, wherein the light control component further comprises an insulation layer arranged between respective longitudinal strip-shaped electrodes and respective longitudinal strip-shaped electrodes.

6. The three-dimensional display device according to claim 1, wherein the control component comprises a capture element and a control element, wherein:

the capture element is configured to determine a relative position of a line of sight of the viewer to the micro LED display panel, or to determine a gravity sensing direction of the three-dimensional display device; and

the control element is configured to determine a three-dimensional display direction required of the three-dimensional display device according to the determined relative position of the line of sight of the viewer to the micro LED display panel, or the determined gravity sensing direction of the three-dimensional display device, and thereafter to control the micro LED display panel to display in the landscape mode or in the portrait mode, and also to control the light control component to generate the parallax barrier matching with the landscape mode or the portrait mode.

7. The three-dimensional display device according to claim 6, wherein the capture element is a camera or a gravity sensor.

8. The three-dimensional display device according to claim 1, wherein each of the light-shielding strips and each of the light-transmitting strips in the parallax barrier correspond respectively to one column or row of pixels in the micro LED display panel.

9. The three-dimensional display device according to claim 1, wherein a width of each of the light-shielding strips in the parallax barrier is same as a width of each of the light-transmitting strips in the parallax barrier.

10. The three-dimensional display device according to claim 1, wherein the three-dimensional display device further comprises a transparent glue layer arranged between the micro LED display panel and the light control component.

11. The three-dimensional display device according to claim 1, wherein the light control component comprises:

a first substrate and a second substrate arranged opposite to each other, an electrode structure arranged between the first substrate and the second substrate, and a light adjusting layer configured to generate the parallax barrier according to voltage variation of the electrode structure.

12. The three-dimensional display device according to claim 11, wherein a material of the light adjusting layer is a liquid crystal material or an electrochromic material.

13. The three-dimensional display device according to claim 11, wherein the electrode structure comprises:

a plurality of transverse strip-shaped electrodes, and a plurality of longitudinal strip-shaped electrodes, which are arranged on a side of the first substrate facing the second substrate, and which intersect in different planes with, and are insulated from each other, and a planar electrode arranged on a side of the second substrate facing the first substrate.

14. The three-dimensional display device according to claim 1, wherein each of the light-shielding strips and each of the light-transmitting strips in the parallax barrier correspond respectively to one column or row of pixels in the micro LED display panel.

15. The three-dimensional display device according to claim 1, wherein a width of each of the light-shielding strips in the parallax barrier is same as a width of each of the light-transmitting strips in the parallax barrier.

16. The three-dimensional display device according to claim 1, wherein the three-dimensional display device further comprises a transparent glue layer arranged between the micro LED display panel and the light control component.