CN111554226A - Brightness compensation method and device and brightness compensation system - Google Patents
Brightness compensation method and device and brightness compensation system Download PDFInfo
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- CN111554226A CN111554226A CN202010440594.3A CN202010440594A CN111554226A CN 111554226 A CN111554226 A CN 111554226A CN 202010440594 A CN202010440594 A CN 202010440594A CN 111554226 A CN111554226 A CN 111554226A
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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Abstract
The embodiment of the application discloses a brightness compensation method, a device and a brightness compensation system, wherein the method comprises the following steps: when the display panel inputs original image data, acquiring each preset brightness compensation table corresponding to the original image data; the original image data corresponds to at least two preset brightness compensation tables; compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness; when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list; and compensating the actual brightness of the display panel according to the target brightness compensation list. The brightness compensation method, the device and the system can improve production efficiency.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a brightness compensation method and apparatus, and a brightness compensation system.
Background
As the size of the display panel increases, the brightness unevenness (mura) of the display panel becomes more and more serious due to factory line engineering processes, and the like, and thus, more and more display panels need to be subjected to brightness compensation.
However, currently, each display panel needs to be photographed to obtain a detection image, and then brightness compensation is performed according to the brightness of the detection image, which is a complicated process, thereby reducing production efficiency.
Disclosure of Invention
The embodiment of the application provides a brightness compensation method, a device and a brightness compensation system thereof, which can improve the production efficiency.
The embodiment of the application provides a brightness compensation method, which comprises the following steps:
when the display panel inputs original image data, acquiring each preset brightness compensation table corresponding to the original image data; the original image data corresponds to at least two preset brightness compensation tables;
compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness;
when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list;
and compensating the actual brightness of the display panel according to the target brightness compensation list.
The embodiment of the application provides a brightness compensation device, including:
the display device comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring each preset brightness compensation table corresponding to original image data when the original image data is input by a display panel; the original image data corresponds to at least two preset brightness compensation tables;
the first compensation module is used for compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness;
the first determining module is used for taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list when one of the compensation brightness meets a preset condition;
and the second compensation module is used for compensating the actual brightness of the display panel according to the target brightness compensation list.
The embodiment of the application also provides a brightness compensation system which comprises the brightness compensation device.
According to the brightness compensation method, the device and the system, when the display panel inputs original image data, each preset brightness compensation table corresponding to the original image data is obtained; the original image data corresponds to at least two preset brightness compensation tables; compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness; when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list; according to the target brightness compensation list, the actual brightness of the display panel is compensated, and the initial brightness of the display panel is compensated by directly adopting the preset brightness compensation list, so that the brightness compensation of each display panel in a production line in a photographing mode can be avoided, the process of brightness compensation is simplified, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a luminance compensation method according to an embodiment of the present application.
Fig. 2 is a flowchart illustrating a luminance compensation method according to another embodiment of the present application.
Fig. 3 is a schematic diagram illustrating a luminance compensation process of a display panel according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a luminance compensation apparatus according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a luminance compensation apparatus according to another embodiment of the present application.
Fig. 6 is a schematic structural diagram of a brightness compensation system according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1, fig. 1 is a flowchart illustrating a luminance compensation method according to an embodiment of the present disclosure. The method can comprise the following steps:
s101, when original image data are input into a display panel, acquiring each preset brightness compensation table corresponding to the original image data;
for example, a database stores a plurality of original image data in advance, and also stores a plurality of preset brightness compensation tables corresponding to each original image data, and the original image data is also generated in advance, wherein the original image data corresponds to at least two preset brightness compensation tables; that is, each original image data corresponds to at least two preset brightness compensation tables.
When the original image data is input into the display panel and displayed by the display panel, the original image data has initial brightness, and the display panel has a phenomenon of uneven brightness.
S102, compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness;
for example, the initial brightness of the display panel is compensated through each preset brightness compensation list corresponding to the original image, so as to obtain a plurality of compensated brightness.
S103, when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list;
for example, in an embodiment, it may be determined whether the just noticeable difference of each compensation brightness is smaller than a preset difference, and if the just noticeable difference of one of the compensation brightness is smaller than the preset difference, it is determined that the compensation brightness satisfies a preset condition, so that the preset brightness compensation table corresponding to the compensation brightness is used as the target brightness compensation list. Of course, the specific manner of determining whether the compensation brightness satisfies the preset condition is not limited thereto.
And S104, compensating the actual brightness of the display panel according to the target brightness compensation list.
For example, the actual brightness of the display panel is compensated according to the target brightness compensation list obtained in step S103, so that the phenomenon of brightness unevenness of the display panel in the actual display process is avoided, and the display effect is improved.
Because the initial brightness of the display panel is compensated by directly adopting the preset brightness compensation table, the brightness compensation of each display panel in the production line can be avoided by adopting a photographing mode, so that the process of brightness compensation is simplified, and the production efficiency is improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating a luminance compensation method according to a second embodiment of the present application. The method can comprise the following steps:
s201, when original image data are input into a display panel, acquiring each preset brightness compensation table corresponding to the original image data;
for example, a database stores a plurality of original image data in advance, and also stores a plurality of preset brightness compensation tables corresponding to each original image data, and the original image data is also generated in advance, wherein the original image data corresponds to at least two preset brightness compensation tables; that is, each original image data corresponds to at least two preset brightness compensation tables.
As shown in fig. 3, the abscissa represents the position of the display panel, the ordinate represents the brightness, the brightness range is-5 to 30 nits, the display panel includes a first region 101 and a second region 102, wherein the first region 101 is located at two sides of the display panel, the second region 102 is located in the middle of the display panel, in general, the display panel is divided into a plurality of regions to be detected, and the following description takes 8 rows and 8 columns of regions to be detected as an example:
when the original image data 11 is inputted to the display panel and displayed, the original image data has an initial brightness, and the display panel has a brightness non-uniformity phenomenon, and the brightness of each region to be detected is shown in table 1:
TABLE 1
| 25 | 25 | .. | 25 | 24 | ||
| 26 | 30 | .. | 24 | 25 | ||
| . | ... | 20 | 25 | |||
| . | … | .. | … | |||
| 28 | 29 | … | 28 | 30 |
The preset brightness compensation tables corresponding to the original image data are shown in tables 2 to 4:
TABLE 2
| 0 | 0 | .. | 0 | 1 | ||
| -4 | -5 | .. | 1 | 0 | ||
| . | ... | 5 | 0 | |||
| . | … | .. | … | |||
| -3 | -4 | … | -3 | -5 |
TABLE 3
| 0 | 0 | .. | 0 | 1 | ||
| -3 | -5 | .. | 1 | 0 | ||
| . | ... | 5 | 0 | |||
| . | … | .. | … | |||
| -3 | -4 | … | -4 | -5 |
TABLE 4
| 0 | 0 | .. | 0 | 1 | ||
| -4 | -4 | .. | 1 | 0 | ||
| . | ... | 5 | 0 | |||
| . | … | .. | … | |||
| -3 | -4 | … | -4 | -4 |
Tables 1 to 4 show the luminance of only a part of the regions to be detected, and the luminance of the remaining regions to be detected is not shown.
S202, compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness;
for example, the initial luminance of the display panel is compensated by each of the preset luminance compensation lists in tables 2 to 4, respectively, to obtain a plurality of compensated luminances.
In one embodiment, the step of compensating the initial brightness of the display panel by using each preset brightness compensation table corresponding to the original image data includes:
s2021, generating brightness compensation data according to the preset brightness compensation list;
and S2022, compensating the initial brightness of the display panel according to the brightness compensation data.
For example, the luminance compensation data 12 is generated according to each of the preset luminance compensation lists in tables 2 to 4, and then the initial luminance of the display panel is compensated according to the luminance compensation data 12. For example, in one embodiment, the brightness compensation data corresponding to the preset brightness compensation list is directly input into the display panel.
In one embodiment, in order to improve the compensation efficiency, the step S2022, namely the step of compensating the initial brightness of the display panel according to the brightness compensation data, includes:
(1) and compensating the initial brightness of the first area according to the brightness compensation data corresponding to the first area.
Generally, the brightness of the two side regions of the display panel is prone to be uneven, so the brightness compensation can be performed on the corresponding to-be-detected region in the first region 101 according to the brightness compensation data of the to-be-detected region in the first region 101.
It is understood that the brightness of the region to be detected in the second region 102 may not be processed.
S203, when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list;
for example, in one embodiment, in order to further improve the production efficiency, it may be determined whether the just noticeable difference of each compensation brightness is smaller than a preset difference, and if the just noticeable difference of one of the compensation brightness is smaller than the preset difference, it is determined that the compensation brightness satisfies a preset condition, so that the preset brightness compensation table corresponding to the compensation brightness is used as the target brightness compensation list. Of course, the specific manner of determining whether the compensation brightness satisfies the preset condition is not limited thereto. For example, if the just noticeable difference of the compensation luminance corresponding to table 2 is smaller than the preset difference, table 2 is used as the target luminance compensation list.
In an embodiment, that is, the step S203, namely, the step of determining that the compensated brightness satisfies the preset condition includes:
(2) and when the just noticeable difference of the compensation brightness is smaller than a preset difference value, determining that the compensation brightness meets a preset condition.
For example, when it is determined that the just noticeable difference of the compensation brightness is smaller than a preset difference, it is determined that the compensation brightness satisfies a preset condition, and the preset difference is specifically set according to an empirical value, which is not limited herein.
S204, when the plurality of compensation brightnesses do not meet the preset condition, acquiring an initial image currently displayed by the display panel through acquisition equipment; and generating a target brightness compensation list according to the brightness of each region to be detected in the initial image.
The step of generating a target brightness compensation list according to the brightness of each region to be detected in the initial image comprises the following steps:
s2041, acquiring the brightness of each region to be detected in the initial image;
s2042, generating a target brightness compensation list according to the brightness of each to-be-detected area and a preset brightness threshold;
for example, when the plurality of compensation brightnesses do not meet the preset condition, acquiring an image currently displayed by the display panel through a camera to obtain an initial image, and acquiring the brightness of each region to be detected in the image; generating a target brightness compensation list according to the brightness of each to-be-detected area and a preset brightness threshold; in an embodiment, the target brightness compensation list may be generated according to the brightness of each to-be-detected region and a difference between the preset brightness thresholds, and a generation manner of the target brightness compensation list is not limited to this.
And S205, compensating the actual brightness of the display panel according to the target brightness compensation list.
For example, the actual brightness of the display panel is compensated according to the target brightness compensation list obtained in step S203 or S204, so that the phenomenon of brightness unevenness of the display panel in the actual display process is avoided, and the display effect is improved.
In another embodiment, to improve the accuracy of the brightness compensation, the method may further include:
s206, when at least two compensation luminances in the compensation luminances meet a preset condition, acquiring a just noticeable difference of each compensation luminance in the at least two compensation luminances to obtain a plurality of just noticeable differences;
for example, when the just noticeable difference of the at least two compensated luminances is less than the preset difference value, the at least two compensated luminances are determined to satisfy the preset condition.
S207, using a preset brightness compensation table corresponding to the compensation brightness corresponding to the minimum just noticeable difference as a target brightness compensation list, where the minimum just noticeable difference is a minimum value among the multiple just noticeable differences.
For example, in one embodiment, for example, if all the just noticeable differences of the compensated luminances corresponding to tables 2 and 4 are smaller than the preset difference, the just noticeable differences J1 and J2 of the compensated luminances of tables 2 and 4 are obtained, and if J2 is smaller than J1, table 4 is used as the target luminance compensation list.
On the basis of the previous embodiment, because when the effect after the compensation of each preset brightness compensation table is not good, the brightness compensation is performed by adopting a photographing mode, the brightness can be effectively compensated, and the flexibility is improved.
The embodiment of the present application further provides a luminance compensation apparatus, as shown in fig. 4 and 5, the apparatus 30 includes: an acquisition module 31, a first compensation module 32, a first determination module 33, and a second compensation module 34.
An obtaining module 31, configured to obtain, when original image data is input to a display panel, each preset brightness compensation table corresponding to the original image data; the original image data corresponds to at least two preset brightness compensation tables;
the first compensation module 32 is configured to compensate the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data, respectively, to obtain a plurality of compensation brightnesses;
a first determining module 33, configured to, when one of the compensation luminances meets a preset condition, use a preset luminance compensation table corresponding to the compensation luminance as a target luminance compensation list;
and the second compensation module 34 is configured to compensate the actual brightness of the display panel according to the target brightness compensation list.
In one embodiment, the first compensation module 32 includes:
a generating unit 321, configured to generate luminance compensation data according to the preset luminance compensation list;
and a compensation unit 322 for compensating the initial brightness of the display panel according to the brightness compensation data.
In one embodiment, the display panel includes a first region located at both sides of the display panel; the compensation unit 322 is specifically configured to:
and compensating the initial brightness of the first area according to the brightness compensation data corresponding to the first area.
In one embodiment, the apparatus further comprises:
the determining module 35 is configured to determine that the compensation brightness satisfies a preset condition when the just noticeable difference of the compensation brightness is smaller than a preset difference.
In another embodiment, the apparatus comprises:
a second determining module 36, configured to, when at least two of the plurality of compensation luminances satisfy a preset condition, obtain a just noticeable difference of each of the at least two compensation luminances, so as to obtain a plurality of just noticeable differences; and taking a preset brightness compensation table corresponding to the compensation brightness corresponding to the minimum just noticeable difference as a target brightness compensation list, wherein the minimum just noticeable difference is the minimum value of the multiple just noticeable differences.
In another embodiment, the apparatus comprises:
and a third determining module 37, configured to, when none of the plurality of compensation luminances satisfies the preset condition, obtain, by using a collection device, an initial image currently displayed by the display panel, and generate a target luminance compensation list according to the luminance of each to-be-detected region in the initial image.
The brightness compensation device 30 provided in the embodiment of the present invention can implement each process implemented in the above brightness compensation method embodiment, and is not described here again to avoid repetition.
As shown in fig. 6, an embodiment of the present invention further provides an illumination compensation system 100, which includes the illumination compensation apparatus 30 described in any one of the above. The brightness compensation system may further include a display panel 10, an image capturing device 20, a data burner 40, a signal generator 50, a timing controller 60, a memory 70, and a main board 80.
The image pickup device 20 is connected to the display panel 10 and the brightness compensation means 30, respectively. Image capture device 20 may be a camera.
The data burner 40 is used for storing the target brightness compensation list acquired by the brightness compensation device 30 into the memory 70.
The signal generator 50 is used to provide a signal source, i.e., a video signal, to the main board 80.
Wherein the timing controller 60 and the memory 70 are both disposed on the main board 80, and the memory 70 is, for example, FLASH.
When the timing controller 60 is operated, the timing controller 60 obtains the corresponding target brightness compensation list from the memory 70, compensates the video signal to obtain the data signal, and then inputs the data signal into the display panel 10.
The brightness compensation system 100 of the present embodiment includes all technical solutions of the above brightness compensation apparatus embodiments, so that at least all technical effects can be achieved, and details are not described herein.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
According to the brightness compensation method, the device and the system, when the display panel inputs original image data, each preset brightness compensation table corresponding to the original image data is obtained; the original image data corresponds to at least two preset brightness compensation tables; compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness; when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list; according to the target brightness compensation list, the actual brightness of the display panel is compensated, and the initial brightness of the display panel is compensated by directly adopting the preset brightness compensation list, so that the brightness compensation of each display panel in a production line in a photographing mode can be avoided, the process of brightness compensation is simplified, and the production efficiency is improved.
The brightness compensation method, the brightness compensation device, and the brightness compensation system provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the above description of the embodiments is only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A method of luminance compensation, comprising:
when the display panel inputs original image data, acquiring each preset brightness compensation table corresponding to the original image data; the original image data corresponds to at least two preset brightness compensation tables;
compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness;
when one of the compensation brightness meets a preset condition, taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list;
and compensating the actual brightness of the display panel according to the target brightness compensation list.
2. The luminance compensation method of claim 1, wherein the step of compensating the initial luminance of the display panel by the preset luminance compensation tables respectively corresponding to the original image data comprises:
generating brightness compensation data according to the preset brightness compensation list;
and compensating the initial brightness of the display panel according to the brightness compensation data.
3. The luminance compensation method according to claim 2, wherein the display panel includes first regions, the first regions being located at both sides of the display panel;
the compensating the initial brightness of the display panel according to the brightness compensation data includes:
and compensating the initial brightness of the first area according to the brightness compensation data corresponding to the first area.
4. The luminance compensation method according to claim 1, wherein the step of determining that the compensated luminance satisfies a preset condition comprises:
and when the just noticeable difference of the compensation brightness is smaller than a preset difference value, determining that the compensation brightness meets a preset condition.
5. The luminance compensation method according to claim 1, wherein the method further comprises:
when at least two compensation brightness in the compensation brightness meet a preset condition, acquiring a just noticeable difference of each compensation brightness in the compensation brightness to obtain a plurality of just noticeable differences;
and taking a preset brightness compensation table corresponding to the compensation brightness corresponding to the minimum just noticeable difference as a target brightness compensation list, wherein the minimum just noticeable difference is the minimum value of the multiple just noticeable differences.
6. The brightness compensation method according to claim 1, wherein when none of the plurality of compensation brightnesses satisfies the preset condition, an initial image currently displayed by the display panel is acquired by an acquisition device, and a target brightness compensation list is generated according to a brightness of each region to be detected in the initial image.
7. An illumination compensation apparatus, comprising:
the display device comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring each preset brightness compensation table corresponding to original image data when the original image data is input by a display panel; the original image data corresponds to at least two preset brightness compensation tables;
the first compensation module is used for compensating the initial brightness of the display panel through each preset brightness compensation table corresponding to the original image data to obtain a plurality of compensation brightness;
the first determining module is used for taking a preset brightness compensation table corresponding to the compensation brightness as a target brightness compensation list when one of the compensation brightness meets a preset condition;
and the second compensation module is used for compensating the actual brightness of the display panel according to the target brightness compensation list.
8. The luminance compensation device as claimed in claim 7, wherein the first compensation module comprises:
the generating unit is used for generating brightness compensation data according to the preset brightness compensation list;
and the compensation unit is used for compensating the initial brightness of the display panel according to the brightness compensation data.
9. An illumination compensation system, comprising: the luminance compensation device as claimed in claim 7 or 8.
10. The brightness compensation system of claim 9, wherein the display brightness compensation system further comprises an image capture device, a display panel, a timing controller, a memory, a data burner, and a signal generator.
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| CN114333669A (en) * | 2021-12-06 | 2022-04-12 | Tcl华星光电技术有限公司 | Sample capacity determination method and device, display equipment and storage medium |
| CN114664267A (en) * | 2022-03-14 | 2022-06-24 | Tcl华星光电技术有限公司 | Voltage compensation method and device and display device |
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