Three-dimensional display apparatus

Patent metadata

Field	Value
Publication number	US-10670871-B2
Application number	US-201615541409-A
Country	US
Kind code	B2
Filing date	Sep 28, 2016
Priority date	Jan 26, 2016
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

An embodiment of the present disclosure provides a three-dimensional display apparatus, including: a pixel structure formed by a plurality of sub-pixels, a three-dimensional grating formed by a plurality of strip gratings arranged along a row direction; wherein, the respective sub-pixels in each row of sub-pixels are aligned, the respective sub-pixels in every two adjacent rows of sub-pixels are staggered by a half width of the sub-pixel, in the row direction, and each sub-pixel is different in color from the respective sub-pixels adjacent thereto; the respective strip gratings have a same extension direction and have a certain inclination angle with respect to the row direction; and each strip grating corresponds to at least two sub-pixels, which display different viewpoint images, in each row of sub-pixels.

First claim

The invention claimed is:

1. A three-dimensional display apparatus, comprising:
a pixel structure formed by a plurality of sub-pixels,
a three-dimensional grating formed by a plurality of strip gratings arranged along a row direction; wherein
the respective sub-pixels in each row of sub-pixels are aligned, the respective sub-pixels in every two adjacent rows of sub-pixels are staggered in the row direction by a half width of the sub-pixel, and each sub-pixel is different in color from the respective sub-pixels adjacent thereto;
the respective strip gratings have a same extension direction and have a certain inclination angle with respect to the row direction; and each strip grating corresponds to at least two sub-pixels, which display different viewpoint images, in each row of sub-pixels,
an edge of each strip grating is an oblique line with a direction same as the extension direction, and the oblique line divides each sub-pixel overlapped with the edge into two portions, and
the oblique line passes through two sides of the sub-pixel overlapped with the edge, the two sides of the sub-pixel overlapped with the edge are opposite to each other in a column direction, the oblique line is intersected with one of the two sides at a vertex of the sub-pixel, and the oblique line is intersected with the other of the two sides at a middle point of the side.

2. The three-dimensional display apparatus according to claim 1 , wherein
in each row of sub-pixels, every two sub-pixels constitute a square pixel unit, and a length-width ratio of each sub-pixel is 2:1; or, every 1.5 sub-pixels constitute a square pixel unit, and the length-width ratio of each sub-pixel is 3:2; or, each sub-pixel constitutes a square pixel unit, and the length-width ratio of each sub-pixel is 1:1.

3. The three-dimensional display apparatus according to claim 1 , wherein in spaced apart rows of sub-pixels, respective sub-pixels are aligned in the column direction.

4. The three-dimensional display apparatus according to claim 1 , wherein the three-dimensional grating is a lens grating, and the strip grating is of a lens structure; or, the three-dimensional grating is a slit grating, and the strip grating is a combination of a strip light-transmitting region and a strip light-shading region.

5. The three-dimensional display apparatus according to claim 4 , wherein the three-dimensional grating is arranged on a light emergent side of the pixel structure; or, when the pixel structure is a liquid crystal pixel structure, the three-dimensional grating is arranged on a light incident side of the pixel structure.

6. The three-dimensional display apparatus according to claim 1 , wherein the inclination angle between the extension direction of the strip gratings and the row direction is [70°, 80°].

7. The three-dimensional display apparatus according to claim 6 , wherein the inclination angle between the extension direction of the strip gratings and the row direction is [71°, 77.5°].

8. The three-dimensional display apparatus according to claim 7 , wherein an edge of each strip grating is a folded line and is positioned at a gap between two adjacent sub-pixels.

9. The three-dimensional display apparatus according to claim 1 , wherein corresponding to the strip grating overlapped with a portion occupying for a larger ratio, each divided sub-pixel displays viewpoint image.

10. The three-dimensional display apparatus according to claim 9 , wherein each strip grating corresponds to five sub-pixels, which display different viewpoint images, in each row of sub-pixels.

11. The three-dimensional display apparatus according to claim 1 , wherein the oblique line is divided according to maximization of a total segmentation ratio of each divided sub-pixel.

12. The three-dimensional display apparatus according to claim 11 , wherein when the length-width ratio of each sub-pixel is 3:2, the inclination angle between the extension direction of the strip gratings and the row direction is 75.07° or 77.47°.

13. The three-dimensional display apparatus according to claim 12 , wherein when the inclination angle is 75.07°, the viewpoint image displayed by respective sub-pixels in the pixel structure takes every 16 rows of sub-pixels as one repeat unit.

14. The three-dimensional display apparatus according to claim 12 , wherein when the inclination angle is 75.07°, a viewpoint image displayed by respective sub-pixels in the pixel structure takes every 40 rows of sub-pixels as one repeat unit.

15. The three-dimensional display apparatus according to claim 1 , wherein each divided sub-pixel is consistent in segmentation ratio.

16. The three-dimensional display apparatus according to claim 15 , wherein the edge coincides with vertices, at a same position, of the respective sub-pixels overlapped with the edge.

17. The three-dimensional display apparatus according to claim 15 , wherein when the length-width ratio of each sub-pixel is 3:2, the inclination angle between the extension direction of the strip gratings and the row direction is 71.57°.

18. The three-dimensional display apparatus according to claim 17 , wherein a viewpoint image displayed by the respective sub-pixels in the pixel structure takes every ten rows of sub-pixels as one repeat unit.

19. The three-dimensional display apparatus according to claim 18 , wherein two adjacent rows of sub-pixels form one group, and in each group of sub-pixels, two sub-pixels adjacent in the column direction display the same viewpoint image.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wu Kun

Classifications

• G02B27/022 Primary

  Viewing apparatus (G02B27/04, G02B27/06, G02B27/08 take precedence) · CPC title

• G02B5/18

  Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)} · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• G02B27/42

  Diffraction optics {, i.e. systems including a diffractive element being designed for providing a diffractive effect}(G02B27/60 takes precedence) · CPC title

• G02B27/0944

  Diffractive optical elements, e.g. gratings, holograms (gratings per se G02B5/18; holograms used as optical elements per se G02B5/32) · CPC title