Display device
The purpose of the present invention is to provide a display device in which the occurrence of the crosstalk can be suppressed. A display unit includes a display panel ( 12 ), a storage unit ( 54 ), a confirmation unit ( 56 ), and a correction unit ( 52 ). The display panel displays a synthetic image. The storage unit stores respective crosstalk levels set with respect to a plurality of areas ( 13 a, 13 b, 13 c ) that the display panel has. The confirmation unit that confirms in which one of the plurality of areas a pixel exists that displays an image that a viewer is supposed to see, among the plurality of images contained in the synthetic image. The correction unit reads the crosstalk level corresponding to the area, among the plurality of areas, in which the confirmation unit confirms the pixel displaying the image that a viewer is supposed to see exist, from the storage unit, and corrects the gray scale level data of the pixel displaying the image that a viewer is supposed to see, by using the crosstalk level.
1. A display device comprising:
a display to display a synthetic image formed by dividing each of a plurality of images that are different from one another and arraying divisional images obtained in a predetermined order; and
an image separator to separate the plurality of images contained in the synthetic image,
wherein the display includes:
a display panel to display the synthetic image;
storage circuitry to store respective crosstalk levels set with respect to a plurality of areas included in the display panel;
confirmation circuitry to confirm in which one of the plurality of areas a pixel exists that displays an image that a viewer is supposed to see, among the plurality of images contained in the synthetic image; and
correction circuitry to read a crosstalk level corresponding to the area, among the plurality of areas, in which the confirmation circuitry confirms the pixel displaying the image that a viewer is supposed to see exists, from the storage circuitry, and correct gray scale level data of the pixel displaying the image that a viewer is supposed to see, by using the crosstalk level, wherein
the correction circuitry corrects gray scale level data of the pixel displaying the image that a viewer is supposed to see, by the following equation (1):
l o =l x +(C+1)×(l m −l x −l y −1)/(l m +1) (1)
where
l x represents gray scale level data of the pixel displaying the image that a viewer is supposed to see,
l y represents gray scale level data of a pixel serving as a factor that causes crosstalk,
l m represents a maximum value of the gray scale level data of the pixel displaying the image that a viewer is supposed to see,
C represents a crosstalk level, and
l o represents gray scale level data of the pixel after the correction.
2. The display device according to claim 1 , wherein
the display panel has a display area where the synthetic image is displayed,
the display area includes the plurality of areas, and
the confirmation circuitry confirms in which one of the plurality of areas the pixel displaying the image that a viewer is supposed to see exists, based on address data indicating a position of the pixel in the display area.
3. The display device according to claim 1 , wherein the display includes calculation circuitry to calculate gray scale level data of a pixel serving as a factor that causes crosstalk, based on gray scale level data of a pixel adjacent to the pixel displaying the image that a viewer is supposed to see.
4. The display device according to claim 1 , wherein the display further includes generation circuitry to generate the crosstalk level in vicinities of a boundary of two adjacent areas among the plurality of areas.
5. The display device according to claim 4 , wherein the generation circuitry includes:
difference calculation circuitry to calculate a difference between the respective crosstalk levels set with respect to the two adjacent areas;
width setting circuitry to set a width of a boundary belt area including a boundary between the two adjacent areas, and extending along the boundary;
change rate calculation circuitry to calculate a crosstalk level change rate in a width direction of the boundary belt area by dividing the difference of the crosstalk levels calculated by the difference calculation circuitry by the width of the boundary belt area set by the width setting circuitry; and
a crosstalk level setting circuitry to set the crosstalk level based on the change rate calculated by the change rate calculation circuitry, and a position in the boundary belt area width direction of the pixel showing the image that a viewer is supposed to see.
6. The display device comprising:
a display to display a synthetic image formed by dividing each of a plurality of images that are different from one another and arraying divisional images obtained in a predetermined order; and
an image separator to separate the plurality of images contained in the synthetic image,
wherein the display includes:
a display panel to display the synthetic image;
storage circuitry to store respective crosstalk levels set with respect to a plurality of areas included in the display panel;
confirmation circuitry to confirm in which one of the plurality of areas a pixel exists that displays an image that a viewer is supposed to see, among the plurality of images contained in the synthetic image; and
correction circuitry to read a crosstalk level corresponding to the area, among the plurality of areas, in which the confirmation circuitry confirms the pixel displaying the image that a viewer is supposed to see exists, from the storage circuitry, and correct gray scale level data of the pixel displaying the image that a viewer is supposed to see, by using the crosstalk level, wherein
the display further includes generation circuitry to generate the crosstalk level in vicinities of a boundary of two adjacent areas among the plurality of areas,
the generation circuitry includes:
difference calculation circuitry to calculate a difference between the respective crosstalk levels set with respect to the two adjacent areas;
width setting circuitry to set a width of a boundary belt area including a boundary between the two adjacent areas, and extending along the boundary;
change rate calculation circuitry to calculate a crosstalk level change rate in a width direction of the boundary belt area by dividing the difference of the crosstalk levels calculated by the difference calculation circuitry by the width of the boundary belt area set by the width setting circuitry; and
crosstalk level setting circuitry to set the crosstalk level based on the change rate calculated by the change rate calculation circuitry, and a position in the boundary belt area width direction of the pixel showing the image that a viewer is supposed to see,
the width setting circuitry changes the width of the boundary belt area according to the difference between the respective crosstalk levels set with respect to the two adjacent areas.
7. The display device according to claim 1 , wherein the storage circuitry stores:
a first crosstalk level used for correcting gray scale level data of a pixel displaying an image that a viewer is supposed to see in a first direction; and
a second crosstalk level used for correcting gray scale level data of a pixel displaying an image that a viewer is supposed to see in a second direction.
8. The display device according to claim 1 , wherein the storage circuitry stores the crosstalk levels set with respect to respective combinations of gray scale level data including the gray scale level data of the pixel displaying the image that a viewer is supposed to see and the gray scale level data of the pixel serving as the factor that causes crosstalk.
9. The display device according to claim 1 , wherein
the display further includes conversion circuitry to convert the gray scale level data into data of predetermined bits, and
the correction circuitry corrects the gray scale level data using the data resulting from conversion by the conversion circuitry.
10. The display device according to claim 1 , wherein the image separator is a parallax barrier that separates the plurality of images contained in the synthetic image so that the plurality of images are visible from different directions, respectively.
11. The display device according to claim 1 , wherein the image separator is a lenticular lens that separates the plurality of images contained in the synthetic image so that the plurality of images are visible from different directions, respectively.
12. The display device according to claim 1 , wherein the image separator is a liquid crystal lens that separates the plurality of images contained in the synthetic image so that the plurality of images are visible from different directions, respectively.
13. The display device according to claim 1 , wherein the image separator is a partial retarder that separates the plurality of images contained in the synthetic image so that the plurality of images are visible from different directions, respectively.
14. The display device according to claim 6 , wherein the storage circuitry stores:
a first crosstalk level used for correcting gray scale level data of a pixel displaying an image that a viewer is supposed to see in a first direction; and
a second crosstalk level used for correcting gray scale level data of a pixel displaying an image that a viewer is supposed to see in a second direction.
15. The display device according to claim 6 , wherein the storage circuitry stores the crosstalk levels set with respect to respective combinations of gray scale level data including the gray scale level data of the pixel displaying the image that a viewer is supposed to see and the gray scale level data of the pixel serving as the factor that causes crosstalk.
16. The display device according to claim 6 , wherein
the display further includes conversion circuitry to convert the gray scale level data into data of predetermined bits, and
the correction circuitry corrects the gray scale level data using the data resulting from conversion by the conversion circuitry.