AUTOSTEREOSCOPIC THREE-DIMENSIONAL IMAGE DISPLAY DEVICE USING TIME DIVISION

• US 20130181895A1
• Filed: 11/30/2012
• Published: 07/18/2013
• Est. Priority Date: 01/17/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Kim, Sung Kyu, Yoon, Ki Hyuk
• Granted Patent: US 10,283,056 B2
• Time in Patent Office: Days
• US Class Current: 345/156
• CPC Class Codes: G09G 3/34 by control of light from an independent source
• CPC Class Codes: H04N 13/32 using arrays of controllable light sources; using moving apertures or moving light sources
• CPC Class Codes: H04N 13/366 using viewer tracking

Abstract

An autostereoscopic 3D image display device using time division is provided. The image display device includes a backlight, an image display panel, a controller, and a viewer position tracking system. The backlight includes a plurality of line sources which are disposed at certain intervals. The image display panel displays a 3D image. The controller controls the backlight and a viewing point image of the image display panel. The viewer position tracking system determines a pupil position of a viewer and transfers position information to the controller. The image display panel provides two or more viewing points. The line sources configure two or more line source sets that are separately driven at the same time. The two or more line source sets are sequentially driven.

Claims

1. An autostereoscopic three-dimensional (3D) image display device, comprising:

a backlight configured to comprise a plurality of line sources which are disposed at certain intervals;

an image display panel configured to display a 3D image;

a controller configured to control the backlight and a viewing point image of the image display panel; and

a viewer position tracking system configured to determine a pupil position of a viewer and transfer position information to the controller,

wherein,

the image display panel provides two or more viewing points,

the line sources configure two or more line source sets that are separately driven at the same time, and

the two or more line source sets are sequentially driven.

2. The autostereoscopic 3D image display device of claim 1, wherein,

each of the line sources is a self-emitting element selected from among an LED, an OLED, and an FED, or

each of the line sources is configured with an electrical high-speed shutter element including a light source and an FLCD, or a DMD.

3. The autostereoscopic 3D image display device of claim 1, wherein the controller provides a corresponding viewing point image to the image display panel in synchronization with the two or more line source sets that are sequentially driven according to a signal from the viewer position tracking system.

4. The autostereoscopic 3D image display device of claim 3, wherein,

the signal from the viewer position tracking system comprises real-time 3D position information on both eyes of the viewer, and

the controller provides a viewing point image in which a position corresponding to each eye of the viewer is closest to a center of a viewing zone of a viewing point, and removes other viewing point images, in synchronization with the two or more line source sets.

5. The autostereoscopic 3D image display device of claim 4, wherein by using the 3D position information on both eyes of the viewer, the controller provides the viewing point image in which the position corresponding to each eye of the viewer is closest to the center of the viewing zone of the viewing point, and removes the other viewing point images, in synchronization with the two or more line source sets for each 3D pixel line.

6. The autostereoscopic 3D image display device of claim 4, wherein,

there are a plurality of viewers, and

the viewer position information comprises position information on both eyes of the plurality of viewers.

7. The autostereoscopic 3D image display device of claim 1, wherein when N number (where N is an integer from two to sixteen) of line source sets are provided and an interval between unit viewing points at a viewing position is substantially equal to a distance between both eyes of the viewer, viewing points formed by one of the line source sets and the image display panel move by 1/N of the interval between the unit viewing points from viewing points formed by the other of the line source sets which is adjacent to the one of the line source sets and the image display panel.

8. The autostereoscopic 3D image display device of claim 7, wherein when the line source sets are sequentially driven, a corresponding viewing point image on the image display panel is displayed in synchronization with the line source sets.

9. The autostereoscopic 3D image display device of claim 1, wherein a line width of each of the line sources is within 25% of a width of a pixel in the image display panel.

10. The autostereoscopic 3D image display device of claim 3, wherein,

the two or more line source sets are sequentially driven during one frame of an image, and

the controller provides a viewing point image during a portion of one frame of an image.

11. The autostereoscopic 3D image display device of claim 5, wherein,

there are a plurality of viewers, and

the viewer position information comprises position information on both eyes of the plurality of viewers.