Image display and image display method
View Patent ↗An image display includes: a display panel in which a plurality of pixels including first display elements, respectively, are two-dimensionally arranged; a drive section deriving, from a plurality of pieces of still image data and display times of a plurality of still images based on the plurality of pieces of still image data, an accumulated display time of each first display element in each still image data when the plurality of still images are sequentially displayed from one to another, and deriving, from the accumulated display time of each first display element derived in each still image data and degradation characteristic data stored in a memory section, a correction amount of each still image data in each pixel, and further sequentially displaying a plurality of still images based on a plurality of pieces of still image data corrected with use of the obtained correction amount from one to another.
1. An image display comprising:
a display panel including a display region where a plurality of pixels including first display elements of a self-luminous type, respectively, are two-dimensionally arranged;
a memory section to store degradation characteristic data of the first display elements; and
a drive section configured to:
derive an accumulated display time for each first display element of the display panel, wherein the accumulated display time for each first display element is derived as:
T
n
(
x
,
y
)
=
∑
n
=
1
N
α
n
×
K
n
(
x
,
y
)
×
Δ
T
n
,
where α n is a coefficient for gradation for input still image n of a plurality N of input still images, K n (x,y) is gradation data for coordinates (x ,y) in input still image n, and ΔT n is a display time for image n;
determine, from the derived accumulated display time of said each first display element and the degradation characteristic data stored in the memory section, a correction amount for each first display element; and
instruct the display panel to sequentially display, on the display region, a plurality of corrected still images corresponding to the plurality of input still images-corrected with use of the determined correction amount for each first display element.
2. The image display according to claim 1 , wherein:
the degradation characteristic data represents a relationship between the accumulated display time of the first display element and a correction amount for still image data.
3. The image display according to claim 1 , wherein:
the display panel includes a non-display region where one or more dummy pixels including second display elements of a self-luminous type, respectively, and a photosensor detecting light emitted from the one or more dummy pixels are arranged, and
the drive section is configured to correct the degradation characteristic data with use of a photodetection signal outputted from the photosensor.
4. The image display according to claim 1 , further comprising:
an external memory interface configured to connect to an external memory device, and wherein the drive section is further configured to derive the accumulated display time of each first display element in response to detecting a connection of the external memory device with the external memory interface.
5. An image display method in an image display including a display panel which includes a display region where a plurality of pixels including display elements of a self-luminous type, respectively, are two-dimensionally arranged, the method comprising:
deriving an accumulated display time for each display element of the display panel, wherein the accumulated display time for each first display element is derived as:
T
n
(
x
,
y
)
=
∑
n
=
1
N
α
n
×
K
n
(
x
,
y
)
×
Δ
T
n
,
where α n , is a coefficient for gradation for input still image n of n= 1 a plurality N of input still images, K n (x,y) is gradation data for coordinates (x y) in input still image n, and ΔT n is a display time for image n;
determining, from the derived accumulated display time of said each first display element and the degradation characteristic data, a correction amount-for each of the display elements; and
sequentially displaying, on the display region, a plurality of corrected still images corresponding to the plurality of input still images corrected with use of the-determined correction amount for each of the display elements.
6. The image display method according to claim 5 , wherein:
the degradation characteristic data represents a relationship between the accumulated display time of the first display element and a correction amount for still image data.
7. The image display method according to claim 5 , wherein the display panel includes a non-display region where one or more dummy pixels including second display elements of a self-luminous type, respectively, and a photosensor detecting light emitted from the one or more dummy pixels are arranged, and
wherein the method further comprises correcting the degradation characteristic data with use of a photodetection signal outputted from the photosensor.
8. The image display method according to claim 5 , wherein the image display includes an external memory interface configured to connect to an external memory device, and
wherein the method further comprises deriving the accumulated display time of each first display element in response to detecting a connection of the external memory device with the external memory interface.