Apparatus and method for displaying 3-dimensional image

• US 9,420,268 B2
• Filed: 05/21/2012
• Issued: 08/16/2016
• Est. Priority Date: 06/23/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Kyoungil, Cha, Youngwoon, Lee, Dongha
• Primary Examiner(s): Xavier, Antonio
• Application Number:
  US13/476,724
• Publication Number:
  US 20120327074A1
• Time in Patent Office: 1,548 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/28 involving active lenticular arrays
• CPC Class Codes: G02B 30/31 involving active parallax barriers involving directional light or back-light sources G02B30/33
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• 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 13/359 Switching between monoscopic and stereoscopic modes

Abstract

An apparatus and method for displaying a three-dimensional (3D) image is disclosed. On a display panel, red, green and blue subpixels are alternately arranged in a row direction and subpixels having the same color are arranged in a column direction. A 3D image filter is disposed ahead of the display panel and includes a transparent area and a non-transparent area arranged alternately. A controller determines a view image to be displayed at each subpixel of the display panel to one of two view images based on numbers allocated to the subpixels of the display panel.

Claims

1. An apparatus for displaying a perceived three-dimensional (3D) image, comprising:

a display panel having a plurality of subpixels, wherein red, green and blue subpixels are alternately arranged in a row direction of the display panel, and subpixels having a same color are arranged in a column direction of the display panel;

a 3D image filter provided in front of the display panel, the 3D image filter including a transparent area and a non-transparent area that are arranged alternately; and

a controller to determine a view image to be displayed at each subpixel as one of two view images based on numbers allocated to the subpixels, wherein the two view images includes a left view image and a right view image,

wherein the controller determines a view image to be displayed based on an inclination direction of an edge of the non-transparent area of the 3D image filter and a number of view images, wherein the numbers are calculated based on information detected by the controller and the inclination direction of the edge of the non-transparent area, and

wherein the detected information is information indicating the position of a center point of the viewer'"'"'s eyes,

wherein the 3D image is a multi-view image including three or more number of images, and wherein a first part of the images, which is less than the number of images included in the multi-view image, are associated with the left view image, and a second part of the images, including at least one of remaining images, are associated with the right view image.

2. The apparatus according to claim 1, wherein the numbers are a sequence of a finite length.

3. The apparatus according to claim 1, wherein the numbers are previously allocated to the subpixels.

4. The apparatus according to claim 1, further comprising a memory to store information relating to the numbers allocated to the subpixels.

5. The apparatus according to claim 1, wherein the numbers allocated to the subpixels are 15 values.

6. The apparatus according to claim 5, wherein seven values of the 15 values are associated with the left view image and the remaining eight values are associated with the right view image.

7. The apparatus according to claim 1, wherein an edge that defines a width of the non-transparent area of the 3D image filter is inclined with respect to a vertical axis of the display panel.

8. The apparatus according to claim 7, wherein the numbers allocated to the subpixels change based on an inclination direction of the edge of the non-transparent area.

9. The apparatus according to claim 7, wherein an inclination angle α

of the edge of the non-transparent area is arctan(4Ph/3Pv), where Ph represents a width of the subpixel and Pv represents a length of the subpixel.

10. The apparatus according to claim 1, wherein the controller controls activation and deactivation of the non-transparent area of the 3D image filter based on a type of the displayed image.

12. The apparatus according to claim 1, wherein a third part of the image arranged between the first part of images and the second part of images is associated with an image having an average pixel value of the pixel value of the left view image and the pixel value of the right view image.

15. The apparatus according to claim 1, wherein first to seventh view images are arranged as left view images, an eighth view image is arranged as an image having an average pixel value of the pixel value of the left view image and the pixel value of the right view image, and ninth to fifteenth view images are arranged as right view images.

11. A method of displaying a perceived three-dimensional (3D) image on a display panel having a plurality of subpixels, the method comprising:

determining a view image to be displayed at each subpixel of the display panel as one of two view images based on numbers allocated to the subpixels of the display panel and based on an inclination direction of an edge of a non-transparent area of a 3D image filter and a number of view images, wherein the numbers are calculated based on information detected by a controller and the inclination direction of the edge of the non-transparent area, and wherein the detected information is information indicating the positions of a center point of the viewer'"'"'s eyes; and

displaying the determined view images through the subpixels,

wherein red, green and blue subpixels are alternately arranged in a row direction of the display panel, and subpixels having a same color are arranged on the display panel in a column direction of the display panel,

wherein the two view images includes a left view image and a right view image,

wherein the 3D image is multi-view image including three or more images, and wherein a first part of the images, which is less than the number of images included in the multi-view image, is associated with the left view image, and a second part of the images, including at least one of remaining images, are associated with the right view image.

13. The method according to claim 11, further comprising refracting the displayed view images using a lens.

14. The method according to claim 13, further comprising separating the displayed view images using a transparent area of an image filter formed between non-transparent areas of the image filter.

16. The method according to claim 13, wherein a third part of the image arranged between the first part of images and the second part of images is associated with an image having an average pixel value of the pixel value of the left view image and the pixel value of the right view image.

17. The method according to claim 16, wherein first to seventh view images are arranged as left view images, an eighth view image is arranged as an image having an average pixel value of the pixel value of the left view image and the pixel value of the right view image, and ninth to fifteenth view images are arranged as right view images.