CN107564451B - Display panel and display method - Google Patents
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- CN107564451B CN107564451B CN201710856538.6A CN201710856538A CN107564451B CN 107564451 B CN107564451 B CN 107564451B CN 201710856538 A CN201710856538 A CN 201710856538A CN 107564451 B CN107564451 B CN 107564451B
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Abstract
The invention provides a display panel and a display method, and belongs to the technical field of display. In the display method of the display panel, the display panel is divided into i display areas, and each display area comprises j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; the display method comprises the following steps: storeStoring the sum of the brightness of each pixel in each display area when displaying in the Nth frame of picture
Acquiring the brightness sum of each pixel in each display area of the (N + 1) th frame to be displayed
According to
And
judging whether the images in each display area are converted or not; if the image in the kth display area is judged not to be converted, the sum of the brightness of each pixel in the display area is compared
Comparing with a first preset value; if it is as described
If the brightness of each pixel in the kth display area is larger than the first preset value, adjusting the data to be input to each pixel in the kth display area so as to enable the adjusted brightness sum of each pixel in the kth display area
Is less than
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display panel and a display method.
Background
Because the image is still for a long time and the contrast of the light and the shade in the picture is strong, after the picture is switched, the original bright part still has partial shadow remained in the picture. In a slight case, the afterimage will fade away gradually, but if the still picture is played for too long time or accumulated for a long time, it will cause permanent damage and is not reversible.
The display panel manufacturer takes the residual image as an important index for quality judgment. The image retention is required to be stopped under a standard test picture, the image retention appears as late as possible, and the image retention disappears as early as possible after the image retention appears. Therefore, the afterimage is not easy to be found out on the product with good quality. Otherwise, it can be easily detected by the user. Therefore, it is an urgent need to provide a display method capable of solving the display afterimage problem of the display panel.
Disclosure of Invention
The present invention is directed to at least one of the technical problems in the prior art, and provides a display panel and a display method thereof for alleviating display image retention.
The technical scheme adopted for solving the technical problem is a display method of a display panel, wherein the display panel is divided into i display areas, and each display area comprises j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; the display method comprises the following steps:
storing the sum of the brightness of each pixel in each display area when the image is displayed in the Nth frame
The sum of the brightness of each pixel in each display area of the (N + 1) th frame to be displayed is obtained
According to
And
judging whether the images in each display area are converted or not;
if the image in the kth display area is judged not to be converted, the sum of the brightness of each pixel in the display area is compared
Comparing with a first preset value;
if it is as described
If the brightness of each pixel in the kth display area is larger than the first preset value, adjusting the data to be input to each pixel in the kth display area so as to enable the adjusted brightness sum of each pixel in the kth display area
Is less than
Preferably, said is according to
And
the step of judging whether the images in the display areas are converted comprises the following steps:
will be provided with
And
comparing the difference value with a second preset value; if it is
And
if the difference value is less than or equal to a second preset value, judging that the image is not converted; if it is
And
if the difference is greater than the second preset value, the image is judged to be changed.
Preferably, said is according to
And
after the step of judging whether the images in the display areas are converted, the method further comprises the following steps:
if the image in the kth display area is judged to be changed, adjusting the data to be input to each pixel in the kth display area so as to enable the data to be input to each pixel in the kth display area
Increase to peak brightness;
judging whether the peak brightness is greater than a first preset value or not;
if the peak brightness is larger than a first preset value, adjusting data to be input to each pixel in the kth display area so as to enable the adjusted brightness sum of each pixel in the kth display area
Is less than
The technical scheme adopted for solving the technical problem is a display panel, wherein the display panel is divided into i display areas, and each display area comprises j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; it is characterized by comprising:
a storage module for storing the sum of the brightness of each pixel in each display area when displaying the N frame of picture
An obtaining module for obtaining the sum of the brightness of each pixel in each display area of the (N + 1) th frame to be displayed
A first judgment module for judging according to
And
judging whether the images in each display area are converted or not;
a comparing module, for judging that the image in the kth display area is not changed in the first judging module, and summing the brightness of each pixel in the display area
Comparing with a first preset value;
a first data adjustment module for adjusting the data rate
When the brightness of each pixel in the kth display area is larger than a first preset value, adjusting data to be input to each pixel in the kth display area so as to enable the brightness sum of each pixel in the kth display area to be adjusted
Is less than
Preferably, the first judging module is specifically configured to judge whether the first judgment module is to be used for judging whether the first judgment module is
And
comparing the difference value with a second preset value; if it is
And
if the difference is less than or equal to the second preset value, it is determinedNo transition of broken images occurs; if it is
And
if the difference is larger than the second preset value, the image is judged to be changed.
Preferably, the display panel further includes:
a second data adjusting module, configured to adjust data to be input to each pixel in a kth display area when the first determining module determines that the image in the kth display area is changed, so that the data is input to each pixel in the kth display area
Increase to peak brightness;
the second judgment module is used for judging whether the peak brightness is greater than a first preset value or not;
a third data adjusting module, configured to adjust data to be input to each pixel in the kth display area if the peak brightness is greater than a first preset value, so as to adjust a sum of brightness of each pixel in the kth display area
Is less than
The technical scheme adopted for solving the technical problem of the invention is a display device which comprises the display panel.
Preferably, the display device is an organic electroluminescent diode display device.
The invention has the following beneficial effects:
in the display method of the present invention, if it is detected that the difference between the sum of the luminances of the pixels in a part of the display area in the (N + 1) th frame to be displayed and the sum of the luminances of the pixels in the corresponding display area in the nth frame is less than the luminance threshold, that is,
and judging that the image is not converted, and when the image is not converted, adjusting the data to be input in the unchanged display area, and enabling the brightness of the display area when the (N + 1) th frame of picture is displayed to be smaller than that when the nth frame of picture is displayed, so that the problem of display afterimage of the display panel is avoided, and the power consumption can be reduced.
Drawings
Fig. 1 is a flowchart of a display method of a display panel according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a display panel according to embodiment 1 of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, the present embodiment provides a display method of a display panel, the display panel is divided into i display areas, each display area includes j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; the display method in the embodiment includes the steps of:
step one, storing and displaying the brightness sum of each pixel in each display area when the N frame of picture is displayed
In this step, specifically, the luminance of each pixel is obtained according to the data information input to each pixel on the display panel when the nth frame of picture is displayed, and then the luminance sum of each pixel in each display area is calculated
Step twoAcquiring the brightness sum of each pixel in each display area of the (N + 1) th frame picture to be displayed
In this step, the luminance of each pixel of the display panel when displaying the (N + 1) th frame of a picture may be calculated based on data to be input to each pixel in the display panel, and then the sum of the luminances of the respective pixels in each display region may be calculated
Step three, according to
And
and judging whether the images in the display areas are converted or not.
The method specifically comprises the following steps: will be provided with
And
is compared with a second predetermined value (i.e., the brightness threshold value L th), if
And
is less than or equal to a second predetermined value (i.e., is less than or equal to the second predetermined value)
) If so, judging that the image is not converted; if it is
And
is greater than a second predetermined value (i.e., is greater than the second predetermined value)
The image is judged to be transformed.
Step four, if the image in the kth display area is judged not to be converted, the sum of the brightness of each pixel in the display area is compared with the sum of the brightness of each pixel in the display area
And compared with the first preset value (brightness lowest value).
If the image in the kth display area is judged to be changed, adjusting the size of the data with input to each pixel in the display area so as to enable the brightness sum of each pixel in the display area
Increasing to a brightness peak.
Step five, when the image in the Kth display area is judged to be changed, if the image is changed
If the brightness of each pixel in the kth display area is larger than the first preset value, adjusting the data to be input to each pixel in the kth display area, and outputting the data to the display panel to enable the adjusted brightness sum of each pixel in the kth display area
Is less than
If it is
And if the current pixel value is less than the first preset value, directly outputting the data to be input of each pixel in the kth display area to the display panel.
When the image in the kth display area is judged to be changed, the brightness peak value and the first preset value are comparedComparing the values, if the brightness peak value is larger than a first preset value, adjusting the size of data to be input in the display area so as to adjust the brightness sum of each pixel in the kth display area
Is less than
And if the brightness peak value is larger than or equal to the first preset value, directly outputting the data corresponding to the brightness peak value to the display panel.
In the above display method, if it is detected that the difference between the sum of the luminances of the pixels in a part of the display area in the (N + 1) th frame to be displayed and the sum of the luminances of the pixels in the corresponding display area in the nth frame is less than the luminance threshold, that is,
and judging that the image is not converted, and when the image is not converted, adjusting the data to be input in the unchanged display area, and enabling the brightness of the display area when the (N + 1) th frame of picture is displayed to be smaller than that when the nth frame of picture is displayed, so that the problem of display afterimage of the display panel is avoided, and the power consumption can be reduced.
Example 2:
as shown in fig. 2, the present embodiment provides a display panel which can perform display by using the display method in embodiment 1. The display panel is divided into i display areas, and each display area comprises j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; the display panel specifically includes: the device comprises a storage module, an acquisition module, a judgment module, a comparison module and a data adjustment module.
Specifically, the storage module is used for storing the sum of the brightness of each pixel in each display area when the Nth frame of picture is displayed
The acquisition module is used for acquiring the sum of the brightness of each pixel in each display area of the (N + 1) th frame picture to be displayed
The first judging module is used for judging according to
And
and judging whether the images in the display areas are converted or not.
The first judging module is specifically used for judging whether the first judging module is used for judging whether the first judging module
And
comparing the difference value with a second preset value; if it is
And
if the difference value is less than or equal to a second preset value, judging that the image is not converted; if it is
And
if the difference is larger than the second preset value, the image is judged to be changed.
A comparing module for judging whether the image in the kth display area is not converted in the judging module and comparing the brightness sum of each pixel in the display area
Comparing with a first preset value;
a first data adjustment module for adjusting the data rate
When the brightness of each pixel in the kth display area is larger than a first preset value, adjusting data to be input to each pixel in the kth display area so as to enable the brightness sum of each pixel in the kth display area to be adjusted
Is less than
Preferably, the display panel in this embodiment further includes: the device comprises a second judgment module, a second data adjustment module and a third data adjustment module.
The second data adjusting module is used for adjusting data to be input to each pixel in the kth display area when the first judging module judges that the image in the kth display area is changed, so that the data can be input to each pixel in the kth display area
Increase to peak brightness;
the second judging module is used for judging whether the peak brightness is greater than a first preset value or not;
a third data adjusting module, configured to adjust data to be input to each pixel in the kth display area if the peak brightness is greater than a first preset value, so as to adjust a sum of brightness of each pixel in the kth display area
Is less than
When the first determining module in the display panel of this embodiment determines that the difference between the luminance sum of each pixel in a part of the display area in the N +1 th frame of picture to be displayed and the luminance sum of each pixel in the corresponding display area in the nth frame of picture, which is obtained by the obtaining module, is smaller than the luminance threshold, that is,
and judging that the image is not converted, and when the image is not converted, adjusting the data to be input in the unchanged display area, and enabling the brightness of the display area when the (N + 1) th frame of picture is displayed to be smaller than that when the nth frame of picture is displayed, so that the problem of display afterimage of the display panel is avoided, and the power consumption can be reduced.
Example 3:
the present embodiment provides a display device including the display panel of embodiment 2, which is not described in detail herein. The display device is preferably an organic electroluminescent diode display device.
Of course, the display device in this embodiment may include any product or component with a display function, such as an O L ED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
With the display device, the display device of the embodiment has low power consumption and can avoid the problem of display afterimage.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (6)
1. A display method of a display panel is provided, the display panel is divided into i display areas, each display area comprises j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; the display method is characterized by comprising the following steps:
storing and displaying each display in the Nth frame of pictureThe sum of the brightness of each pixel in the region
Acquiring the brightness sum of each pixel in each display area of the (N + 1) th frame to be displayed
According to
And
judging whether the images in each display area are converted or not;
if the image in the kth display area is judged not to be converted, the sum of the brightness of each pixel in the display area is compared
Comparing with a first preset value;
if it is as described
If the brightness of each pixel in the kth display area is larger than the first preset value, adjusting the data to be input to each pixel in the kth display area so as to enable the adjusted brightness sum of each pixel in the kth display area
Is less than
If the image in the kth display area is judged to be changed, adjusting the data to be input to each pixel in the kth display area so as to enable the data to be input to each pixel in the kth display area
Increase to peak brightness;
judging whether the peak brightness is larger than a first preset value or not;
if the peak brightness is larger than a first preset value, adjusting data to be input to each pixel in the kth display area so as to enable the adjusted brightness sum of each pixel in the kth display area
Is less than
2. The display method according to claim 1, wherein the display method is based on
And
the step of judging whether the images in the display areas are converted comprises the following steps:
will be provided with
And
comparing the difference value with a second preset value; if it is
And
if the difference value is less than or equal to a second preset value, judging that the image is not converted; if it is
And
if the difference is greater than the second preset value, the image is judged to be changed.
3. A display panel is divided into i display areas, and each display area comprises j pixels; wherein, i is 1, 2, 3 … … m; j is 1, 2, 3 … … n; it is characterized by comprising:
a storage module for storing the sum of the brightness of each pixel in each display area when displaying the N frame of picture
An obtaining module for obtaining the sum of the brightness of each pixel in each display area of the (N + 1) th frame to be displayed
A first judgment module for judging according to
And
judging whether the images in each display area are converted or not;
a comparing module, for judging that the image in the kth display area is not changed in the first judging module, and summing the brightness of each pixel in the display area
Comparing with a first preset value;
a first data adjustment module for adjusting the data rate
When the brightness of each pixel in the kth display area is larger than a first preset value, adjusting data to be input to each pixel in the kth display area so as to enable the brightness sum of each pixel in the kth display area to be adjusted
Is less than
A second data adjusting module, configured to adjust data to be input to each pixel in a kth display area when the first determining module determines that the image in the kth display area is changed, so that the data is input to each pixel in the kth display area
Increase to peak brightness;
the second judgment module is used for judging whether the peak brightness is larger than a first preset value or not;
a third data adjusting module, configured to adjust data to be input to each pixel in the kth display area if the peak brightness is greater than a first preset value, so as to adjust a sum of brightness of each pixel in the kth display area
Is less than
4. The display panel according to claim 3,
the first judging module is specifically used for judging whether the first judging module is
And
difference of (2)Comparing the value with a second preset value; if it is
And
if the difference value is less than or equal to a second preset value, judging that the image is not converted; if it is
And
if the difference is larger than the second preset value, the image is judged to be changed.
5. A display device characterized by comprising the display panel according to any one of claims 3 to 4.
6. The display device according to claim 5, wherein the display device is an organic electroluminescent diode display device.
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|---|---|---|---|
| CN201710856538.6A CN107564451B (en) | 2017-09-21 | 2017-09-21 | Display panel and display method |
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| CN103778897B (en) * | 2014-01-28 | 2016-03-02 | 北京京东方显示技术有限公司 | A kind of image display control method and device |
| CN103761941B (en) * | 2014-01-29 | 2016-05-18 | 京东方科技集团股份有限公司 | A kind of image residue method, device and display unit of reducing |
| CN106023894B (en) * | 2016-08-09 | 2019-01-22 | 深圳市华星光电技术有限公司 | A kind of driving method and drive system for reducing AMOLED and showing ghost |
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