Panel with virtual curved display surface and display device

Patent metadata

Field	Value
Publication number	US-11327336-B2
Application number	US-201816302026-A
Country	US
Kind code	B2
Filing date	Mar 2, 2018
Priority date	Mar 17, 2017
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A panel with a virtual curved display surface and a display device are provided. The virtual curved display panel includes a display panel and a grating. The grating is disposed at a light-exiting side of the display panel, and includes a plurality of light-transmitting regions and a plurality of light-shielding regions spaced apart from each other. Respective widths of the plurality of light-shielding regions of the grating are gradually decreased as respective distances from the plurality of light-shielding regions to a symmetry axis of the display panel are increased, and respective widths of the plurality of light-transmitting regions are gradually increased as respective distances from the plurality of light-transmitting regions to the symmetry axis of the display panel are increased.

First claim

What is claimed is:

1. A panel with a virtual curved display surface comprising a display panel and a grating, wherein:
the grating is disposed at a light-exiting side of the display panel, and comprises a plurality of light-transmitting regions and a plurality of light-shielding regions spaced apart from each other;
respective widths of the plurality of light-shielding regions of the grating are gradually decreased as respective distances from the plurality of light-shielding regions to a symmetry axis of the display panel are increased;
respective widths of the plurality of light-transmitting regions are gradually increased as respective distances from the plurality of light-transmitting regions to the symmetry axis of the display panel are increased;
light emitted from the display panel forms a virtual curved surface through the grating, and the virtual curved surface is formed at an opposite side of the display panel to the light-exiting side or at the light-exiting side of the display panel;
when the virtual curved surface is formed at the opposite side of the display panel to the light-exiting side, a formula used to calculate the respective width of each of the light-shielding regions is:

w
=

x
+
h

x
+
L

⁢
D

;

and
a formula used to calculate the respective width of each of the light-transmitting regions is:

s
=

2
⁢

(

L
-
h

)

⁢
p

L

-
w

,

when the virtual curved surface is formed at the light-exiting side of the display panel, a formula used to calculate the respective width of each of the light-transmitting regions is:

s
=

x
-
h

L
-
x

⁢
D

;

and
a formula used to calculate the respective width of each of the light-shielding regions is:

w
=

2
⁢

(

L
-
h

)

⁢
p

L

-
s

,

x is a distance between the virtual curved surface and the display panel, and is a variable; w is the width of the light-shielding region; h is a distance between the grating and the display panel; D is an interval between pupils of left and right eyes of a user; L is a distance from the left and right eyes of the user to the display panel; s is the width of the light-transmitting region; and p is a width of one of a sub-pixel and a pixel of the display panel; and
when the virtual curved surface is formed at the opposite side of the display panel to the light-exiting side, x gradually decreases as a distance to the symmetry axis of the display panel is increased; and when the virtual curved surface is formed at the light-exiting side of the display panel, x gradually increases as a distance to the symmetry axis of the display panel is increased.

2. The panel with a virtual curved display surface according to claim 1 , wherein, when the virtual curved surface is formed at the opposite side of the display panel to the light-exiting side, both ends of the virtual curved surface intersect with the display panel.

3. The panel with a virtual curved display surface according to claim 1 , wherein, when the virtual curved surface is formed at the opposite side of the display panel to the light-exiting side, both ends of the virtual curved surface do not intersect with the display panel.

4. The panel with a virtual curved display surface according to claim 1 , wherein, when the virtual curved surface is formed at the light-exiting side of the display panel, the virtual curved surface is tangent to the display panel.

5. The panel with a virtual curved display surface according to claim 1 , wherein the symmetry axis extends in a first direction from an upper side to a lower side of the display panel.

6. A display device comprising a panel with a virtual curved display surface, wherein:
the panel with the virtual curved display surface comprises a display panel and a grating;
the grating is disposed at a light-exiting side of the display panel, and comprises a plurality of light-transmitting regions and a plurality of light-shielding regions spaced apart from each other;
respective widths of the plurality of light-shielding regions of the grating are gradually decreased as respective distances from the plurality of light-shielding regions to a symmetry axis of the display panel are increased;
respective widths of the plurality of light-transmitting regions are gradually increased as respective distances from the plurality of light-transmitting regions to the symmetry axis of the display panel are increased;
light emitted from the display panel forms a virtual curved surface through the grating, and the virtual curved surface is formed at an opposite side of the display panel to the light-exiting side or at the light-exiting side of the display panel;
when the virtual curved surface is formed at the opposite side of the display panel to the light-exiting side, a formula used to calculate the respective width of each of the light-shielding regions is:

w
=

x
+
h

x
+
L

⁢
D

;

and
a formula used to calculate the respective widt

Assignees

• Boe Technology Group Co Ltd

Inventors

• Gao Jian
• Chen Xiaochuan
• Yang Yafeng
• Wang Wei
• Chen Chen Yu

Classifications

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• H04N13/225

  using parallax barriers · CPC title

• G02B30/32

  characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size · CPC title

• G02B30/30 Primary

  involving parallax barriers · CPC title

• G02B30/40

  giving the observer of a single two-dimensional [2D] image a perception of depth · CPC title