Three-demensional display apparatus and three-dimensional display system

A stereoscopic display apparatus, comprising:

• a liquid crystal panel that modulates light entering from a rear side in accordance with an input left-eye video signal and right-eye video signal to display left-eye video and right-eye video;
• a backlight that radiates the liquid crystal panel with the light from the back side;
• a backlight control section that controls a light-emitting state of the backlight;
• and
• a shutter control section that controls an open/closed state of left and right shutters of stereoscopic image observation glasses in an opening/closing cycle in accordance with a display cycle of the left-eye video and the right-eye video, wherein:
• the shutter control section controls a duty ratio of an open period of both the left and right shutters to a greater value than 50%;
• and
• the backlight control section exercises control so that the backlight is turned on only while the shutter control section exercises control so that one of the left and right shutters is in the closed state.

A stereoscopic display apparatus, comprising:

• a liquid crystal panel that modulates light entering from a rear side in accordance with an input left-eye video signal and right-eye video signal to display left-eye video and right-eye video;
• a backlight that radiates the liquid crystal panel with the light from the back side;
• a backlight control section that controls a light-emitting state of the backlight;
• a shutter control section that controls an open/closed state of left and right shutters of stereoscopic image observation glasses in an opening/closing cycle in accordance with a display cycle of the left-eye video and the right-eye video;
• and
• a flicker detection section that detects whether or not there is flicker due to interference of a brightness fluctuation cycle of ambient light of a local apparatus and the opening/closing cycle, wherein:
• if the flicker is detected by the flicker detection section, the shutter control section controls a duty ratio of an open period of each of the left and right shutters to a greater value than 50%;
• and
• if the flicker is detected by the flicker detection section, the backlight control section exercises control so that the backlight is turned on only while the shutter control section exercises control so that one of the left and right shutters is in the closed state.

A stereoscopic display apparatus, comprising:

• a liquid crystal panel that modulates light entering from a rear side in accordance with an input left-eye video signal and right-eye video signal to display left-eye video and right-eye video;
• a backlight that radiates the liquid crystal panel with the light from the back side;
• a backlight control section that controls a light-emitting state of the backlight;
• and
• a shutter control section that controls an open/closed state of left and right shutters of stereoscopic image observation glasses in an opening/closing cycle in accordance with a display cycle of the left-eye video and the right-eye video, wherein:
• an open period duration of each of the left and right shutters substantially matches a brightness fluctuation cycle of ambient light of a local apparatus and the backlight control section exercises control so that the backlight is turned on only while the shutter control section exercises control so that one of the left and right shutters is in the closed state.

A stereoscopic display apparatus, comprising:

• a liquid crystal panel that modulates light entering from a rear side in accordance with an input left-eye video signal and right-eye video signal to display left-eye video and right-eye video;
• a backlight that radiates the liquid crystal panel with the light from the back side;
• a backlight control section that controls a light-emitting state of the backlight;
• and
• a shutter control section that controls an open/closed state of left and right shutters of stereoscopic image observation glasses in an opening/closing cycle in accordance with a display cycle of the left-eye video and the right-eye video, wherein:
• an open period duration of each of the left and right shutters substantially matches ½ of a cycle of a commercial power supply voltage supplied to a local apparatus;
• and
• the backlight control section exercises control so that the backlight is turned on only while the shutter control section exercises control so that one of the left and right shutters is in the closed state.