Apparatus and method for changing an open period for right and left eye shutters of a pair of viewing glasses

1. An image displaying apparatus comprising:

a signal control unit for receiving an input image signal and converting the signal into a signal for alternately displaying a right-eye image and a left-eye image;

display panel into which the signal converted in the signal control unit is input for alternately displaying the right-eye image and the left-eye image;

a surface light source for illuminating the display panel from its back;

a shutter control unit for generating a timing signal indicating a period in which the right-eye and left-eye shutters are opened for a pair of viewing glasses with the right-eye and left-eye shutters, and for relatively changing the shutter-opened period for the emission timing of the surface light source; and

a surface light source control unit for emitting the surface light source in a shorter period than the shutter-opened period in response to the switching between the right-eye image and the left-eye image,

wherein the shutter control unit changes the shutter-opened period based on adjusted changes in color temperature of an image.

2. An image displaying apparatus comprising:

a signal control unit for receiving an input image signal and converting the signal into a signal for alternately displaying a right-eye image and a left-eye image;

display panel into which the signal converted in the signal control unit is input for alternately displaying the right-eye image and the left-eye image;

a surface light source for illuminating the display panel from its back;

a shutter control unit for generating a timing signal indicating a period in which the right-eye and left-eye shutters are opened for a pair of viewing glasses with the right-eye and left-eye shutters, and for relatively changing the shutter-opened period for the emission timing of the surface light source;

a surface light source control unit for emitting the surface light source in a shorter period than the shutter-opened period in response to the switching between the right-eye image and the left-eye image; and

an input unit into which information for adjusting an image color is input,

wherein the shutter control unit changes the shutter-opened period based on the information input into the input unit.

3. The image displaying apparatus according to claim 2 , wherein when information for increasing a color temperature of an image is input into the input unit, the timing control unit relatively delays a timing of the shutter-opened period for the emission timing of the surface light source.

4. The image displaying apparatus according to claim 2 , wherein when information for reducing a color temperature of an image is input into the input unit, the shutter control unit relatively quickens a timing of the shutter-opened period for the emission timing of the surface light source.

5. The image displaying apparatus according to claim 2 , wherein the shutter is of STN type, TN type, VA type or OCB type liquid crystal.

6. The image displaying apparatus according to claim 2 , wherein the signal control unit converts the right-eye video signal and the left-eye video signal into the signals such that the same signal is consecutively displayed at least twice, respectively.

7. The image displaying apparatus according to claim 6 , wherein the surface light source control unit emits the surface light source during at least part of the second display period of the right-eye image and the left-eye image.

8. The image displaying apparatus according to claim 6 , wherein the surface light source control unit does not emit the surface light source during at least part of the first display period of the right-eye image and the left-eye image.

9. An image displaying method comprising the steps of:

receiving an input image signal and converting the signal into a signal for alternately displaying a right-eye image and a left-eye image;

alternately displaying the right-eye image and the left-eye image based on the converted signal;

generating a timing signal indicating a period in which the right-eye and left-eye shutters are opened for a pair of viewing glasses with the right-eye and left-eye shutters, and for relatively changing the shutter-opened period for the emission timing of the surface light source of the display panel for displaying the right-eye image and the left-eye image; and

emitting the surface light source in a shorter period than the shutter-opened period in response to the switching between the right-eye image and the left-eye image,

wherein the generating and changing step changes the shutter-opened period based on adjusted changes in color temperature of an image.

10. An image displaying apparatus comprising:

a signal control unit for receiving an input image signal and converting the signal into a signal for periodically displaying multiple different images;

a display panel into which the signal converted in the signal control unit is input for periodically displaying the multiple different images;

a surface light source for illuminating the display panel from its back;

a shutter control unit for generating a timing signal indicating a period in which the right-eye and left-eye shutters are simultaneously opened at a timing of displaying the multiple different images for a pair of viewing glasses with the right-eye and left-eye shutters, and for relatively changing the shutter-opened period for the emission timing of the surface light source; and

a surface light source control unit for emitting the surface light source in a shorter period than the shutter-opened period in response to the switching between the right-eye image and the left-eye image,

wherein the shutter control unit changes the shutter-opened period based on adjusted changes in color temperature of an image.

11. An image display observing system comprising:

an image displaying apparatus including a signal control unit for receiving an input image signal and converting the signal for periodically displaying multiple different images, a display panel into which the signal converted in the signal control unit is input for periodically displaying the multiple different images, a surface light source for illuminating the display panel from its back, a shutter control unit for generating a timing signal indicating a period in which the right-eye and left-eye shutters are simultaneously opened at a timing of displaying the multiple different images for a pair of viewing glasses with the right-eye and left-eye shutters, and for relatively changing the shutter-opened period for the emission timing of the surface light source, and a surface light source control unit for emitting the surface light source in a shorter period than the shutter-opened period in response to the switching between the right-eye image and the left-eye image; and

the viewing glasses with the right-eye and left-eye shutters for alternatively opening the right-eye and left-eye shutters based on the timing signal,

wherein the shutter control unit changes the shutter-opened period based on adjusted changes in color temperature of an image.

12. An image displaying method comprising the steps of:

outputting a signal for periodically displaying multiple different images;

periodically displaying the multiple different images based on the signal;

generating a timing signal indicating a period in which the right-eye and left-eye shutters are simultaneously opened at a timing of displaying the multiple different images for a pair of viewing glasses with the right-eye and left-eye shutters, and for relatively changing the shutter-opened period for the emission timing of the surface light source of the display panel; and

emitting the surface light source in a shorter period than the shutter-opened period in response to the switching between the right-eye image and the left-eye image,

wherein the generating and changing step changes the shutter-opened period based on adjusted changes in color temperature of an image.