DISPLAY APPARATUS

• US 20110216169A1
• Filed: 10/13/2010
• Published: 09/08/2011
• Est. Priority Date: 03/04/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: BAE, Jihyun, KIM, Heeseop, JUNG, Kyungho, KIM, Hwi, LEE, Seung-Hoon
• Granted Patent: US 8,520,062 B2
• Time in Patent Office: Days
• US Class Current: 348/51
• CPC Class Codes: H01J 9/00 Apparatus or processes specially adapted for the manufacture , installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
• CPC Class Codes: H04N 13/30 Image reproducers optical systems for producing stereoscopic or other three-dimensional effects G02B30/00

Abstract

A display apparatus includes a display panel and an optical member. The display panel includes a plurality of a pixel and displays a 2D image. The optical member includes a plurality of a lens, each having a plurality of a focal point and configured such that at least two pixels of the display panel correspond to one 3D pixel. The optical member divides the 2D image into left and right-eye images by using the lenses of the optical member.

Claims

1. A display apparatus comprising:

a display panel comprising a plurality of a pixel arranged in a matrix, and displaying a 2D image; and

an optical member on the display panel, comprising a plurality of a lens, each lens including a plurality of a focal point and configured such that at least two pixels of the display panel correspond to one 3D pixel, and dividing the 2D image of the display panel into left and right eye images by using the lenses.

2. The display apparatus of claim 1,

wherein each pixel of the display panel comprises red, green, and blue sub pixels, and

wherein the display panel further comprises a black matrix interposed between sub pixels adjacent to each other.

3. The display apparatus of claim 2, wherein the sub pixels, which are adjacent to each other in at least one of a first direction, and a second direction perpendicular to the first direction, have colors different from each other.

4. The display apparatus of claim 2,

wherein the lenses of the optical member longitudinally extend in a first direction, and are arranged in a second direction perpendicular to the first direction, and

wherein each lens has a second directional width defined by at least twice a sum of a width of a sub pixel in the second direction and a width of the black matrix provided between the adjacent sub pixels in the second direction.

5. The display apparatus of claim 4,

wherein the width of the sub pixel in the second direction and the width of the black matrix provided between the adjacent sub pixels in the second direction have a ratio of M:

N, in which the M and N are numbers greater than or equal to 1, and

wherein each lens has J focal points, in which J is a greatest natural number satisfying an equation;

J≦

M+N.

6. The display apparatus of claim 5, wherein a portion of the J focal points overlaps one of the sub pixels, and a remaining focal point overlaps the black matrix adjacent to the one of the sub pixels.

7. The display apparatus of claim 6,

wherein each lens comprises J regions in the second direction, and the J regions comprise a portion of J sub lenses,

wherein the sub lenses have a same curvature and are sequentially arranged while partially overlapping with each other in the second direction, and

wherein an L^th region among the J regions comprises a portion of an L^th sub lens among the J sub lenses, in which L is a natural number in a range of 1 to J.

8. The display apparatus of claim 7, wherein the sub lenses are arranged on a same plane, and the sub lenses adjacent to each other in the second direction are spaced apart from each other by a predetermined interval, and

wherein the predetermined interval is a value obtained by dividing the sum of the width of the black matrix and the width of the sub pixel, by J.

9. The display apparatus of claim 7, wherein the J focal points correspond to curved surfaces of the J regions in one-to-one correspondence.

10. The display apparatus of claim 7, wherein the regions have a same width in the second direction when viewed in a plan view.

11. The display apparatus of claim 5, wherein the M:

N is 2;

1.

12. The display apparatus of claim 5, wherein the M:

N is 4;

1.

13. The display apparatus of claim 1, wherein the optical member further comprises a base sheet, and the lenses are on the base sheet.

14. The display apparatus of claim 1, wherein the optical member further comprises a liquid crystal electric field lens comprising:

a first substrate which comprises a first base substrate, and a plurality of first electrodes spaced apart from each other on the first base substrate,

a second substrate which comprises a second base substrate opposite to the first substrate, and a second electrode on the second base substrate, and

a liquid crystal layer interposed between the first and second substrates, and

wherein the lenses of the optical member are a plurality of internal lenses in the liquid crystal electric field lens due to voltages applied to the first and second electrodes.

15. The display apparatus of claim 14, further comprising:

an insulating layer interposed between a lower portion of the first electrodes and the first base substrate; and

a plurality of third electrodes alternately aligned with the first electrodes in the second direction, and interposed between the insulating layer and the first base substrate.

16. The display apparatus of claim 14, wherein each internal lens is defined by at least two first electrodes and the second electrode, and has a plurality of focal points according to voltage values applied to the at least two first electrodes.

17. The display apparatus of claim 14, wherein each internal lens comprises a fresnel lens.

18. The display apparatus of claim 17, further comprising a polarizing plate above the liquid crystal electric field lens.

19. A method of forming a display apparatus, the method comprising:

forming a display panel comprising a plurality of a pixel including sub-pixels arranged in a matrix, and a black matrix disposed between the pixels, the display panel displaying a 2D image;

forming an optical member comprising a plurality of a lens, each lens including a plurality of a focal point and configured such that at least two pixels of the display panel correspond to one 3D pixel, the optical member dividing the 2D image of the display panel into left and right eye images by using the lenses; and

disposing the optical member on the display panel.

20. The method of claim 19,

wherein the forming a display panel includes defining a width of each sub pixel in a first direction and a width of the black matrix provided between the adjacent sub pixels in the first direction to have a ratio of M:

N, in which the M and N are numbers greater than or equal to 1, and

wherein the forming an optical member includes defining each lens to have J focal points, in which J is a greatest natural number satisfying an equation;

J M+N.