Three-dimensional image display device

Patent metadata

Field	Value
Publication number	US-10247950-B2
Application number	US-201414249446-A
Country	US
Kind code	B2
Filing date	Apr 10, 2014
Priority date	Sep 16, 2013
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A three-dimensional display panel includes an array of pixels arranged in row and column directions, and at least one lenticular lens configured to form N viewpoints in different directions. The at least one lenticular lens has a longitudinal axis inclined by an angle of θ with respect to a column direction of the pixel, and a pitch P of the at least one lenticular lens in the row direction thereof satisfies
( N S ) ⁢ A < P < ( ( N + 1 ) S ) ⁢ A ,
where N is the number of the viewpoints and is an integer greater than or equal to 1, S is the number of the lenticular lenses used to form the N viewpoints and is an integer greater than or equal to 1, and A is a width of each pixel in the row direction.

First claim

What is claimed is:

1. A three-dimensional display panel, comprising:
an array of pixels arranged in row and column directions; and
a viewpoint forming device including at least one multi-view forming unit configured to form N viewpoints,
wherein the at least one multi-view forming unit has a longitudinal axis inclined by an angle of θ with respect to a column direction of the pixels, and
a pitch P of the at least one multi-view forming unit in the row direction thereof satisfies

(

N
S

)

⁢
A

<
P
<

(

(

N
+
1

)

S

)

⁢
A

wherein N is the number of the viewpoints and is an integer greater than or equal to 1, S is the number of multi-view forming units used to form the N viewpoints and is an integer greater than 1, and A is a width of each pixel in the row direction,
wherein a number of pixels rp used to display N viewpoints satisfies N/2<rp<(N+1)/2, when S is equal to 2.

2. The display panel of claim 1 , wherein the angle θ satisfies an inequality of θ≠tan−1(q), wherein q is an aspect ratio of each pixel.

3. The display panel of claim 2 , wherein, when the aspect ratio q is 1/3, the angle θ ranges from 17° to tan −1 (1/3) or range from tan −1 (1/3) to 19°.

4. The display panel of claim 2 , wherein, when the aspect ratio q is 1/6, the angle θ ranges from 8° to tan −1 (1/6) or range from tan −1 (1/6) to 10°.

5. The display panel of claim 1 , wherein the multi-view forming unit is configured to have an optimal viewing width W given by:

W
=

rp
×
OVD

gap

,

wherein rp is a number of pixels used to display N viewpoints, OVD is an optimal viewing distance from the at least one multi-view forming unit to a viewer's eyes, and gap is a distance from the pixels to a surface of the at least one multi-view forming unit.

6. The device of claim 1 , wherein the viewpoint forming device includes a lenticular lens serving as the multi-view forming unit.

7. The display panel of claim 1 , wherein the viewpoint forming device comprises:
a lower substrate with a lower electrode;
an upper substrate with an upper electrode, wherein the upper electrode faces the lower electrode and includes a plurality of electrodes spaced apart from each other in at least one direction, wherein each of the plurality of electrodes extends along a longitudinal direction inclined by the angle θ with respect to the column direction of the pi; and
a liquid crystal lens layer interposed between the lower and upper substrates,
wherein the lenticular lens is formed by controlling orientations of liquid crystal molecules in the liquid crystal lens layer.

8. The display panel of claim 7 , wherein three-dimensional display panel is switched between a 2D operation mode and a 3D operation mode by turning on or off the at least one lenticular lens.

9. A three-dimensional display panel, comprising:
an array of pixels arranged along row and column directions; and
at least one lenticular lens configured to form N viewpoints in different directions,
wherein the at least lenticular lens has a longitudinal axis inclined by an angle of θ with respect to a column direction of the pixel, and
wherein the at least one lenticular lens is configured to have an optimal viewing width W given by:

W
=

rp
×
OVD

gap

,

wherein rp is a number of pixels used to display N viewpoints, OVD is an optimal viewing distance from the at least one lenticular lens to a viewer's eyes, and gap is a distance from the pixels to a surface of the at least one lenticular lens,
wherein the number of pixels rp used to display N viewpoints satisfies
N/2<rp≤(N+1)/2, when S is equal to 2, and S is the number of lenticular lenses used to form the N viewpoints,
wherein a pitch P of the lenticular lens in the row direction thereof satisfies

(

N
S

)

⁢
A

<
P
<

(

(

N
+
1

)

S

)

⁢
A

,

wherein N is the number of the viewpoints and is an integer greater than or equal to 1, S is the number of lenticular lens used to form the N viewpoints and is an integer greater than or equal to 1, and A is a width of each pixel in the row direction.

10. The display panel of claim 9 , wherein the angle θ satisfies an inequality of θ≠tan−1(q), wherein q is an aspect ratio of each pixel.

11. The display panel of claim 9 , wherein the three-dimensional display panel further comprises:
a lower substrate with a lower electrode;
an upper substrate with an upper electrode, wherein the upper electrode faces the lower electrode and includes a plurality of electrodes spaced apart from each other in at least one direction, wherein each of the plurality of electrodes extends along a longitudinal direction inclined by the angle θ with respect to the column direction of the pixels; and
a liquid crystal lens layer interposed between the lower and upper substrates,
wherein the lenticular lens is formed by using the lower electrode and the upper electrode to control orientations of liquid crystal molecules in the liquid crystal layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seung-Hoon
• Oh Soohee
• Yun Haeyoung
• Yi Junghwan
• Kim Jinhwan

Classifications

• H04N13/324

  Colour aspects · CPC title

• H04N13/305 Primary

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• H04N13/317

  using slanted parallax optics · CPC title