AUTOSTEREOSCOPIC 3D DISPLAY DEVICE

• US 20160077349A1
• Filed: 09/09/2015
• Published: 03/17/2016
• Est. Priority Date: 09/11/2014
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: AN, Chunghwan
• Granted Patent: US 9,995,942 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/29 characterised by the geometry of the lenticular array, e.g. slanted arrays, irregular arrays or arrays of varying shape or size
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/317 using slanted parallax optics
• CPC Class Codes: H04N 13/349 Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for viewing without the aid of special glasses using fly-eye lenses H04N13/307
• CPC Class Codes: H04N 13/351 for displaying simultaneously
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 2213/001 Constructional or mechanical details

Abstract

An autostereoscopic 3D display device according to embodiments of the present disclosure may be configured to set the width of a viewing diamond to a/n times (where a and n are natural numbers satisfying the condition: a<n) of the interocular distance while at the same time overlapping the viewing diamonds with each other. Furthermore, the same or similar input data between adjoining views may be newly mapped through a view data rendering process.

Accordingly, it may be possible to provide an effect of removing or minimizing 3D crosstalk, luminance difference, and image flipping in stereoscopic images, thereby enhancing the perceived depth of stereoscopic images.

Claims

1. An autostereoscopic 3D display device, comprising:

an image panel comprising a plurality of sub-pixels that collectively output light corresponding to a plurality of view images;

a 3D filter disposed on a surface of the image panel, the 3D filter forming the plurality of view images within a plurality of viewing zones by directing the outputted light of the plurality of sub-pixels to the plurality of viewing zones, wherein each of the plurality of viewing zones overlaps one or more other viewing zones, and each of the plurality of view images is formed in a corresponding one of the plurality of viewing zones; and

an intervening layer positioned between the image panel and the 3D filter, the intervening layer maintaining a gap between the image panel and the 3D filter;

wherein a width of each of the plurality of view zones is a proper fraction of an interocular distance, the interocular distance being a distance between an observer'"'"'s eyes.

2. The autostereoscopic 3D display device of claim 1, wherein the width of each viewing zone is 1/n times the interocular distance when a thickness of the intervening layer is n times a base thickness of the intervening layer.

3. The autostereoscopic 3D display device of claim 1, wherein the 3D filter comprises a lenticular lens sheet formed with a plurality of lenticular lenses, and wherein the width of each viewing zone is 1/n times the interocular distance when a pitch of the lenticular lens is 1/n times a base pitch the lenticular lens.

4. The autostereoscopic 3D display device of claim 1, wherein the 3D filter outputs a k-th view image displayed on a k-th sub-pixel as a k-th view.

5. The autostereoscopic 3D display device of claim 1, further comprising:

a timing controller configured to map identical or similar input data between adjacent overlapping views.

6. The autostereoscopic 3D display device of claim 5, wherein the timing controller converts the input data corresponding to a viewing zone located between a left-eye and a right-eye to a view image which is identical or similar to a view image perceived by the left-eye or the right-eye.

7. The autostereoscopic 3D display device of claim 1, wherein a plurality of views are concurrently output to a left eye and a right eye of the observer.

8. The autostereoscopic 3D display device of claim 7, wherein when a width of the viewing zones is 1/n times the interocular distance, n+(21−

3) views are concurrently perceived by a single eye, and n+(21−

3) viewing zones exist between the left-eye and a corresponding right-eye, where I is an integer greater than 1.

9. The autostereoscopic 3D display device of claim 1, further comprising:

a timing controller that groups input data into a plurality of groups, the input data in each group corresponding to a subset of the viewing zones that are adjoining, the timing controller further converting the input data in one or more of the groups into combined input data describing a single converted view image for the corresponding group;

wherein the image panel outputs light such that a substantially identical viewing image forms in each viewing zone corresponding to a given group.

10. The autostereoscopic 3D display device of claim 9, wherein responsive to the input data including image data corresponding to sixteen viewing zones and each viewing zone overlapping with two other viewing zones, the timing controller groups the image data into four groups, each group including input data corresponding to four adjoining viewing zones, the timing controller further creating, for each group, the single converted view image based on the input data in the group.

11. The autostereoscopic 3D display device of claim 9, wherein at least one of the groups is a transition group, and the timing controller creates a medium view image based on the input data included in groups immediately adjacent to the transition group on either side of the transition group, the medium view image being an image part-way between the single converted view images of the immediately adjacent groups.

12. The autostereoscopic 3D display device of claim 11, wherein the medium view image is half-way between the single converted view images of the immediately adjacent groups.

13. The autostereoscopic 3D display device of claim 1, wherein a sub-pixel outputting light received by a left-eye and a sub-pixel outputting light received by a right-eye are spatially separated by one sub-pixel.

14. The autostereoscopic 3D display device of claim 9, wherein a number of viewing zones for which corresponding input data is included in a group is equal to or less than a product of an overlapping number of viewing zones and a quotient of interocular distance and the width of the viewing zones.

15. The autostereoscopic 3D display device of claim 14, wherein responsive to the number of viewing zones for which corresponding input data is included in a group being less than the product of the overlapping number of viewing zones and the quotient of the interocular distance and the width of the viewing zones, input data of a medium view is entered between two adjoining groups, the medium view image being half-way between the single converted view images of the adjoining groups.

16. The autostereoscopic 3D display device of claim 1, wherein a total number of the views is equal to or less than a product of (N+1), a number of overlapping viewing zones, and the quotient of the interocular distance and the width of the viewing zones, where N is a natural number.

17. The autostereoscopic 3D display device of claim 1, wherein the plurality of pixels are sequentially allocated with a first view through an m-th view on m of the sub-pixels, where m is a natural number.

18. The autostereoscopic 3D display device of claim 1, wherein a distance between centers of adjacent viewing zones is less than an interocular distance.

19. The autostereoscopic 3D display device of claim 1, wherein the plurality of overlapping viewing zones are diamond shaped.

20. The autostereoscopic 3D display device of claim 1, wherein the distance between the observer'"'"'s eyes is an estimate based on a typical distance between human eyes.

21. The autostereoscopic 3D display device of claim 1, wherein the intervening layer is a gap glass.