Three-dimensional image display device
A stereoscopic image display device includes a viewpoint division unit that divides an image displayed in a plurality of pixels into images that correspond to k viewpoints, wherein the viewpoint division unit comprises a plurality of viewpoint division units inclined with an inclination angle that satisfies V A = tan - 1 b × Hp m × Vp , where Hp denotes a pitch of a row direction of the pixels, Vp denotes a pitch of a column direction of the pixels, and m and b are natural numbers, and a number of first pixels arranged in an area defined by a unit of m×b among a plurality of first pixels emitting light transmitting the same viewpoint division unit among the plurality of viewpoint division units is n=b+m−1.
1. A stereoscopic image display device comprising: a viewpoint division unit that divides an image displayed by a plurality of pixels into images corresponding to k viewpoints,
wherein the viewpoint division unit comprises a plurality of viewpoint division units inclined with an inclination angle with respect to a pixel column that satisfies:
VA
=
tan
-
1
b
×
Hp
m
×
Vp
wherein Hp denotes a pitch of a row direction of the pixels, Vp denotes a pitch of a column direction of the pixels, and m and b are natural numbers, and
a number of first pixels arranged in an m×b unit area that transmits a same viewpoint division unit is n=b+m−1;
wherein the viewpoint division unit comprises a lenticular lens; and
a display panel that includes the plurality of pixels arranged in a matrix format,
wherein when a viewer views an image of the display panel at an optimal viewing distance from the viewpoint division unit, the following equation is satisfied:
(
n
m
×
Hp
)
:
g
=
E
:
d
,
d
:
Lp
=
(
d
+
g
)
:
(
2
×
n
m
×
Hp
)
wherein E denotes a distance between both eyes of the viewer, g denotes a distance between the viewpoint division unit and the display panel, Lp denotes a pitch of the lenticular lens, and d denotes the optimal viewing distance.
2. The stereoscopic image display device of claim 1 , wherein a width of a row direction of the first pixel area viewed through the lenticular lens is Hp/m.
3. The stereoscopic image display device of claim 1 , wherein a pitch of the lenticular lens corresponds to 2n/m pixels.
4. The stereoscopic image display device of claim 1 , further comprising: a sensor configured to detect locations of a viewer's eyes; and a controller configured to change pixels when an image corresponding to the k viewpoints corresponds to locations of both eyes.
5. The stereoscopic image display device of claim 4 , wherein the controller changes pixels of the image corresponding to the k viewpoints by setting a viewing area having a width of E/n as a control unit at the optimal viewing distance.
6. The stereoscopic image display device of claim 4 , wherein, when the sensor detects the locations of both viewer's eyes to change to a second location from a first location while the k viewpoints display a binocular image, wherein a distance between the first location and the second location exceeds E/n, the controller changes at least one pixel of pixels displaying a left-eye image to display a right-eye image and changes at least one pixel of pixels displaying the right-eye image to display the left-eye image.
7. The stereoscopic image display device of claim 1 , wherein b=3 and m=4.
8. The stereoscopic image display device of claim 1 , wherein pixels in one pixel column represent a same primary color.
9. The stereoscopic image display device of claim 8 , wherein pixels of adjacent pixel columns represent different primary colors.