# US 10,321,125 B2 · Control method and a control apparatus for a naked eye 3D display apparatus and a naked eye 3D display apparatus

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- Number: US 10,321,125 B2
- Document ID: US10321125B2
- Status: Granted
- Kind: B2
- Application number: 14/803,606
- Filed: 2015-07-20
- Published: 2016-07-14
- Granted: 2019-06-11
- Earliest claimed: 2015-01-13
- Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd.
- Inventors: Zhiming Meng; Weihao Hu; Daekeun Yoon; Jianming Wang; Zongze He
- Web page: https://patentgrep.com/patent/US10321125B2

## CPC

- H04N 13/383: for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes
- H04N 13/31: using parallax barriers
- H04N 13/317: using slanted parallax optics
- H04N 13/368: for two or more viewers
- H04N 13/378: for tracking rotational head movements around an axis perpendicular to the screen
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A control method and a control apparatus for a naked eye 3D display apparatus and a naked eye 3D display apparatus are described. The control method for a naked eye 3D display apparatus includes: detecting the position of a user; determining viewpoints where the left eye and right eye of the user are located according to the detected position of the user; and turning on sub-pixels corresponding to the determined viewpoints and turning off other sub-pixels. Such a control method enables a user is caused to only see those display pictures corresponding to viewpoints that need to be seen, thereby solving the problem of cross-talk between multiple viewpoints.

## Claims

### Claim 1

A control method for a naked eye 3D display apparatus, comprising:
obtaining multiple position coordinates within the visual area of the naked eye 3D display apparatus, such that a maximum distance between any two neighboring position coordinates of the multiple position coordinates within the visual area is not more than the width of user's eye;
determining a viewpoint corresponding to each of the multiple position coordinates according to display pictures viewed at the multiple position coordinates;
creating a database for a corresponding relationship between user's position and viewpoints where user's left eye and the right eye are located according to the multiple position coordinates and the viewpoints corresponding to the multiple position coordinates;
detecting a position of a user;
determining, by querying the database, viewpoints where the left eye and right eye of the user are located according to the detected position of the user; and
turning on sub-pixels, corresponding to the determined viewpoints at which the left eye and right eye of the user are located, in a display panel of the naked eye 3D display apparatus and turning off other sub-pixels in the display panel.

### Claim 2 (depends on 1)

The control method of claim 1, wherein the step of detecting the position of a user comprises:
detecting the position coordinate of the user by a human face recognition technique.

### Claim 3

A control apparatus for a naked eye 3D display apparatus, comprising:
a database creation unit for obtaining multiple position coordinates within the visual area of the naked eye 3D display apparatus, such that a maximum distance between any two neighboring position coordinates of the multiple position coordinates within the visual area is not more than the width of user's eye; determining a viewpoint corresponding to each of the multiple position coordinates according to display pictures viewed at the multiple position coordinates, and creating a database for a corresponding relationship between user's position and viewpoints where user's left eye and the right eye are located according to the multiple position coordinates and the viewpoints corresponding to the multiple position coordinates;
a human face recognition camera for detecting the position of a user;
a viewpoint determination unit for determining, by querying the database, viewpoints where the left eye and right eye of the user are located according to the position of the user detected by the position detection unit; and
a timing controller for turning on sub-pixels corresponding to the determined viewpoints at which the left eye and right eye of the user are located, in a display panel of the naked eye 3D display apparatus and turning off other sub-pixels in the display panel.

### Claim 4 (depends on 3)

A naked eye 3D display apparatus, characterized in that, the naked eye 3D display apparatus comprises the control apparatus for a naked eye 3D display apparatus as claimed in claim 3.

### Claim 5 (depends on 4)

The naked eye 3D display apparatus as claimed in claim 4, characterized in that, the naked eye 3D display apparatus comprises a display panel and a grating, wherein the display panel comprises red sub-pixels, green sub-pixels and blue sub-pixels, and the grating comprises light transmission stripes, and wherein the extension direction of the light transmission stripes is parallel to the arrangement direction of sub-pixels corresponding to a single viewpoint, and along the extension direction of the light transmission stripes, the sub-pixels corresponding to a single viewpoint comprise red sub-pixels, green sub-pixels and blue sub-pixels.