Pixel array, driving method thereof, display panel and display device
View Patent ↗The present invention provides a pixel array comprising a plurality of pixel units, each of which comprises three sub-pixels in different colors, wherein, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block. Compared to the prior art, the width of the sub-pixel in the present invention increases, which reduces the difficulty of the manufacturing process of the pixel array and improves product yield. The present invention further provides a driving method of the pixel array, a display panel including the pixel array, and a display device including the display panel. When driving the above pixel array with the driving method, granular sensation of the display panel including the pixel array can be reduced, and a display effect of a display panel with higher resolution in the same size can be achieved.
1. A driving method of a pixel array, wherein, the pixel array comprises a plurality of pixel units, each of which comprises three sub-pixels in different colors, in each pixel unit, any two adjacent sub-pixels are combined into a pixel block having a square shape, a width of each of the sub-pixels is a half of a length of each of the sub-pixels, and the driving method comprises steps of:
S1, calculating theoretical brightness values of an image to be displayed at respective sub-pixels;
S2, calculating actual brightness values of the respective sub-pixels, wherein, the actual brightness value of each sub-pixel at least comprises a sum of a part of the theoretical brightness value of the sub-pixel and a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in the same row; and
S3, inputting signals to the respective sub-pixels, so that the respective sub-pixels reach the actual brightness values calculated in step S2,
wherein, in step S2, the actual brightness value of each sub-pixel comprises the sum of a part of the theoretical brightness value of the sub-pixel and a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel only in the same row minus a part of the theoretical brightness values of one or more sub-pixels in the same color as the sub-pixel in different rows,
and wherein, the pixel array comprises X rows and Y columns of sub-pixels, X and Y are whole numbers, and in step S2, the actual brightness value A(m, n) of the sub-pixel in row m and column n is calculated according to the following formula:
A
(
m
,
n
)
=
a
*
T
(
m
,
n
-
3
)
+
(
b
+
∑
i
=
1
4
e
i
)
*
T
(
m
,
n
)
+
a
*
T
(
m
,
n
+
3
)
-
[
e
1
*
T
(
m
-
1
,
n
-
3
)
+
e
2
*
T
(
m
+
1
,
n
-
3
)
+
e
3
*
T
(
m
-
1
,
n
+
3
)
+
e
4
*
T
(
m
+
1
,
n
+
3
)
]
;
wherein,
T(m, n) is the theoretical brightness value of the sub-pixel in row m and column n, m and n are whole numbers,
T(m, n−3) is the theoretical brightness value of the sub-pixel in row m and column n−3,
T(m, n+3) is the theoretical brightness value of the sub-pixel in row m and column n+3,
T(m−1, n−3) is the theoretical brightness value of the sub-pixel in row m−1 and column n−3,
T(m−1, n+3) is the theoretical brightness value of the sub-pixel in row m−1 and column n+3,
T(m+1, n−3) is the theoretical brightness value of the sub-pixel in row m+1 and column n−3,
T(m+1, n+3) is the theoretical brightness value of the sub-pixel in row m+1 and column n+3, 1<m<X, X≧3, 3<n≦Y−3, Y≧7, a>0, b>0, e 1 >0, e 2 >0, e 3 >0, e 4 >0, 2a+b=1, and
∑
i
=
1
4
e
i
⩽
0.4
.