Display apparatus and display system

• US 9,927,629 B2
• Filed: 07/28/2015
• Issued: 03/27/2018
• Est. Priority Date: 03/20/2015
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Leng, Changlin
• Primary Examiner(s): Dudek, James
• Application Number:
  US15/122,158
• Publication Number:
  US 20170017090A1
• Time in Patent Office: 973 Days
• Field of Search: None
• CPC Class Codes: G02B 27/288 Filters employing polarising elements, e.g. Lyot or Solc filters G02B5/3016 takes precedence
• CPC Class Codes: G02C 7/105 having inhomogeneously distributed colouring
• CPC Class Codes: G02C 7/12 Polarisers
• CPC Class Codes: G02F 1/1323 Arrangements for providing a switchable viewing angle
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133541 Circular polarisers
• CPC Class Codes: G02F 1/133562 on the viewer side
• CPC Class Codes: G02F 1/133567 on the back side
• CPC Class Codes: G02F 2203/07 Polarisation dependent
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13

Abstract

A display apparatus includes: a display panel comprising a plurality of first sub-pixels for a first field of view and a plurality of second sub-pixels for a second field of view; and a first polarization filter having blank regions corresponding to the first sub-pixels or the second sub-pixels. The blank regions have no light polarization property.

Claims

1. A display apparatus comprising:

a dual-view barrier;

a display panel comprising a plurality of first sub-pixels configured for a first field of view, a plurality of second sub-pixels configured for a second field of view and respectively positioned adjacent to the plurality of first sub-pixels, and a black matrix disposed between adjacent ones of the first and second sub-pixels; and

a first polarization filter having blank regions corresponding to the first sub-pixels or the second sub-pixels, the blank regions having no light polarization property, wherein;

the first polarization filter is disposed on a light output side of the display panel; and

a positional relation among the display panel, the dual-view barrier, and the first polarization filter satisfies the following relation

tan θ

=[H*(B+P)]/[H²+A*(A+B+P)],

where H is a distance between the dual-view barrier and a light emitting point of the display panel, P is a width of a single sub-pixel, B is a width of the black matrix between two adjacent sub-pixels, A is a distance between an edge of a light transmission region of the dual-view barrier and an edge of the black matrix, and θ

is a maximal angle where a viewer can see only an image formed by the first sub-pixels or the second sub-pixels.

2. The display apparatus of claim 1, further comprising:

a backlight source disposed on a light input side of the display panel; and

a second polarization filter disposed between the backlight source and the display panel,

wherein the first polarization filter is disposed on a light output side of the display panel.

3. The display apparatus of claim 2, wherein:

the display panel comprises a color filter substrate, an array substrate, and a liquid crystal layer disposed between the color filter substrate and the array substrate.

4. The display apparatus of claim 2, wherein:

the first polarization filter has a left-handed polarity and the second polarization filter has a right-handed polarity;

or

the second polarization filter has a left-handed polarity and the first polarization filter has a right-handed polarity.

5. A display system, comprising:

the display apparatus of claim 1.

6. The display system of claim 5, further comprising:

polarization glasses having the same light polarization property as the first polarization filter.

7. A display system, comprising:

the display apparatus of claim 2.

8. The display system of claim 7, further comprising:

polarization glasses having the same light polarization property as the first polarization filter.

9. A display system, comprising:

the display apparatus of claim 3.

10. The display system of claim 9, further comprising:

polarization glasses having the same light polarization property as the first polarization filter.

11. A display system comprising:

the display apparatus of claim 4.

12. The display system of claim 11, further comprising:

polarization glasses having the same light polarization property as the first polarization filter.

13. The display apparatus of claim 1, wherein:

the dual-view barrier is a parallax grating.

14. The display apparatus of claim 1, wherein:

the dual-view barrier has a prism structure.