Stereoscopic image display device
View Patent ↗A stereoscopic image display device includes a display panel configured to display an image, a barrier placed over the display panel and configured to include a plurality of liquid crystal cells each of which is selectively driven to become a transparent cell or an opaque cell, a polarizing plate placed between the display panel and the barrier, and a phase retarder placed between the internal polarizing plate and the display panel.
1. A stereoscopic image display device, comprising:
a display panel configured to display an image;
a barrier on the display panel, the barrier including a plurality of liquid crystal cells, and being configured to selectively drive each of the liquid crystal cells to become a transparent cell or an opaque cell;
an internal polarizing plate between the display panel and the barrier; and
a phase retarder between the internal polarizing plate and the display panel.
2. The stereoscopic image display device as claimed in claim 1 , wherein the internal polarizing plate is attached to the barrier, and the phase retarder is attached to the polarizing plate.
3. The stereoscopic image display device as claimed in claim 2 , further comprising an air layer between the phase retarder and the display panel.
4. The stereoscopic image display device as claimed in claim 3 , wherein:
the internal polarizing plate is configured to linearly polarize light, and
the phase retarder is configured to circularly polarize the linearly polarized light transmitted through the internal polarizing plate.
5. The stereoscopic image display device as claimed in claim 4 , wherein the phase retarder includes a ¼ wavelength plate, a crossing angle between an optical axis of the phase retarder and a polarization axis of the internal polarizing plate being 45°.
6. The stereoscopic image display device as claimed in claim 1 , further comprising an external polarizing plate, the barrier being between the external polarizing plate and the internal polarizing plate.
7. The stereoscopic image display device as claimed in claim 1 , wherein the internal polarizing plate and the phase retarder are stacked on the barrier.
8. The stereoscopic image display device as claimed in claim 7 , wherein the phase retarder is spaced a predetermined distance from the display panel.
9. The stereoscopic image display device as claimed in claim 7 , wherein the internal polarizing plate directly contacts the phase retarder and the barrier.
10. The stereoscopic image display device as claimed in claim 1 , wherein the display panel includes:
a first display substrate;
a second display substrate opposite to the first display substrate; and
an organic light emitting element between the first display substrate and the second display substrate and configured to display the image.
11. The stereoscopic image display device as claimed in claim 10 , wherein the barrier includes:
a first barrier substrate;
a second barrier substrate opposite to the first barrier substrate; and
a liquid crystal layer between the first barrier substrate and the second barrier substrate and configured to form the plurality of liquid crystal cells.
12. The stereoscopic image display device as claimed in claim 11 , further comprising:
a barrier driver driving the barrier;
a display panel driver driving the display panel; and
a controller controlling the barrier driver and the display panel driver.
13. The stereoscopic image display device as claimed in claim 1 , wherein the internal polarizing plate and the phase retarder are sequentially stacked directly on the barrier.
14. The stereoscopic image display device as claimed in claim 13 , wherein the phase retarder and the display panel are separated from each other by an air gap.
15. The stereoscopic image display device as claimed in claim 1 , wherein the phase retarder is on a first surface of the display panel, a second surface of the display panel opposite the first surface contacting an exterior of the stereoscopic image display device.