Stereoscopic display device
To provide a naked-eye type stereoscopic display device which can achieve a fine stereoscopic display property while achieving high-definition display and high yield. Aperture parts of sub-pixels neighboring to a first direction include overlapping regions which overlap in a second direction and a non-overlapping region which does not overlap. Provided that a width of the aperture part in the second direction is defined as a longitudinal aperture width, the non-overlapping region includes an aperture width fluctuating region where the longitudinal aperture width changes continuously from roughly a center of the aperture part towards both ends of the first direction, respectively. The sum of the longitudinal aperture widths of the two overlapping regions overlapping with each other at a same position in the first direction is larger than the longitudinal aperture width in roughly the center of the aperture part.
1. A stereoscopic display device, comprising:
a display panel including sub-pixels with optical aperture parts being disposed in a matrix form in a first direction and a second direction that is perpendicular to the first direction; and
a light-ray control module which is provided to the display panel for controlling light rays towards the first direction, wherein:
provided that two of the sub-pixels neighboring to each other in the first direction are defined as a first sub-pixel and a second sub-pixel respectively, each of the aperture parts of the first sub-pixel and the second sub-pixel includes an overlapping region where the first sub-pixel and the second sub-pixel overlap with each other in the second direction and a non-overlapping region where the first sub-pixel and the second sub-pixel do not overlap with each other;
wherein a width of the aperture part provided in the second direction is defined as a longitudinal aperture width, the non-overlapping region includes an aperture width fluctuating region where the longitudinal aperture width changes continuously from a center region of the aperture part to both ends of the non-overlapping region in the first direction, respectively and wherein the center region comprises an aperture width constant region where the longitudinal aperture width is same at any positions in the first direction; and
a sum of the longitudinal aperture widths of the overlapping regions of the first sub-pixel and the second sub-pixel located at a same position in the first direction is larger than the longitudinal aperture width in the aperture width constant region of the aperture part.
2. The stereoscopic display device as claimed in claim 1 , wherein
the sum of the longitudinal aperture widths of the overlapping regions of the first sub-pixel and the second sub-pixel located at a same position in the first direction is same at any positions in the first direction.
3. The stereoscopic display device as claimed in claim 1 , wherein
the sum of the longitudinal aperture widths of the overlapping regions of the first sub-pixel and the second sub-pixel located at a same position in the first direction is within a range that is over 1 time and equal to 1.12 times or less of the longitudinal aperture width in the aperture width constant region of the aperture part.
4. The stereoscopic display device as claimed in claim 1 , wherein
peripheral sides of the aperture part are provided and are defined as aperture sides, all the aperture sides included in the aperture width fluctuating region are in parallel to none of the aperture sides included in the overlapping region.
5. The stereoscopic display device as claimed in claim 1 , wherein
a maximum value of a difference between a position in the second direction at one end of the aperture part and a position in the second direction at another end of the aperture part is defined as a longitudinal aperture section, and the longitudinal aperture section is larger than a maximum value of the longitudinal aperture width.
6. The stereoscopic display device as claimed in claim 5 , wherein
the positions at the one end and the other end in the second direction forming the longitudinal aperture section are same between the aperture parts that are neighboring to each other in the first direction.
7. The stereoscopic display device as claimed in claim 1 , wherein:
the sub-pixel is a lateral-field drive type liquid crystal display device;
striped electrodes are provided within the aperture part; and
an angle formed between liquid crystal initial alignment and a long-side direction of the electrode of the sub-pixel is different from an angle formed between the liquid crystal initial alignment and a long-side direction of the electrode of the sub-pixel which is for a same viewpoint with that sub-pixel and neighboring thereto in the first direction.