US 2019/0104299 A1Published application

Stereoscopic image display device

AssigneeMitsubishi Electric Corporation

InventorsAkimasa YUUKI, Yohei IIDA

Life of this patent

Estimating the term…

Loading patent…

Abstract

A stereoscopic image display device reduces the possibility of an observer visually recognizing emission or dark lines even while being away from a position suitable for visually recognizing stereoscopic images. A parallax barrier shutter panel includes sub-openings switchable between a light transmission state and a light shielding state. A panel controller changes the pattern of integrated openings configured by sub-openings in the light transmission state in accordance with the position of the observer. When the position of the observer is included in a designed stereoscopic region, the panel controller applies cyclic patterns connected by boundaries among which a phase shift exists, to the integrated openings in accordance with the position of the observer. When the position of the observer is no longer included in the designed stereoscopic region, the pattern of the integrated openings is adjusted to cause the boundaries to disappear while maintaining one cycle.

Claims11

Dependent claims

A stereoscopic image display device for displaying a stereoscopic image toward an observer who is located within a designed stereoscopic region, comprising:

a display panel including a plurality of sub-pixel pairs aligned in a lateral direction and each having two sub-pixels that respectively display images for left and right eyes;
a parallax barrier shutter panel overlaid on the display panel and having a plurality of sub-openings aligned in the lateral direction and electrically switchable between a light transmission state and a light shielding state;
a detector that detects a position of the observer;
a region determination part that determines whether the position of the observer detected by the detector is included in the designed stereoscopic region;
a panel controller that switches each of the plurality of sub-openings in the parallax barrier shutter panel between the light transmission state and the light shielding state in accordance with the position of the observer to change a pattern of an integrated opening configured by sub-openings in the light transmission state among the plurality of sub-openings;
and
a region setting part that sets the designed stereoscopic region,
the panel controller being configured to:
in a case where the region determination part has determined that the position of the observer is included in the designed stereoscopic region, apply a plurality of cyclic patterns to the integrated opening in accordance with the position of the observer, the plurality of cyclic patterns each having one cycle and connected by a plurality of boundaries among which a phase shift exists, and
in a case where the region determination part has determined that the position of the observer is no longer included in the designed stereoscopic region, adjust the pattern of the integrated opening to cause the boundaries to disappear while maintaining the one cycle.

7 more elements

A stereoscopic image display device for displaying a stereoscopic image toward an observer who is located within a designed stereoscopic region, comprising:

a display panel including a plurality of sub-pixel pairs aligned in a lateral direction and each having two sub-pixels that respectively display images for left and right eyes;
a parallax barrier shutter panel overlaid on the display panel and having a plurality of sub-openings aligned in the lateral direction and electrically switchable between a light transmission state and a light shielding state;
a detector that detects a position of the observer;
a region determination part that determines whether the position of the observer detected by the detector is included in the designed stereoscopic region;
a panel controller that switches each of the plurality of sub-openings in the parallax barrier shutter panel between the light transmission state and the light shielding state in accordance with the position of the observer to change a pattern of an integrated opening configured by sub-openings in the light transmission state among the plurality of sub-openings;
and
a region setting part that sets the designed stereoscopic region,
the panel controller being configured to:
in a case where the region determination part has determined that the position of the observer is included in the designed stereoscopic region, apply a plurality of cyclic patterns to the integrated opening in accordance with the position of the observer, the plurality of cyclic patterns each having one cycle and connected by a plurality of boundaries among which a phase shift exists;
and
in a case where the region determination part has determined that the position of the observer is no longer included in the designed stereoscopic region, cause the display panel to display an image with no parallax, reduce a transmittance of sub-openings in the light transmission state among the plurality of sub-openings in the parallax barrier shutter panel, and increase a transmittance of sub-openings in the light shielding state among the plurality of sub-openings in the parallax barrier shutter panel.

8 more elements

Dependencies are inferred from the claim text.