CN111063320A - Display panel aging compensation method, device and system and display device - Google Patents
Display panel aging compensation method, device and system and display device Download PDFInfo
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Abstract
The application discloses a display panel aging compensation method, a device and a system and a display device, wherein the method comprises the following steps: detecting the image complexity of a display panel and the actual brightness of pixels according to an input RGB signal image to obtain an image complexity value and an actual brightness value of the pixels; obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time; processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel; and obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value. According to the method and the device, the initial brightness compensation value obtained through processing can be realized, and the aging brightness compensation optimization is carried out on the display panel according to the image complexity of the picture, so that the aging of the display panel is prevented from being accelerated too fast, and the service life of the display panel is prolonged.
Description
Technical Field
The present disclosure relates to the field of display panel technologies, and more particularly, to a method, an apparatus, a system and a display apparatus for compensating aging of a display panel.
Background
With the development of display devices, it has become an important research focus for display panels of display devices. The quality of a display device firstly needs to see its display panel, and the quality of the display panel directly affects the viewing effect of pictures. For the display panel, as the time for using the panel increases, the luminous efficiency of the display panel will be reduced; at the same drive current, the brightness will decrease. Meanwhile, due to the difference in the degree of aging of the display devices, luminance non-uniformity and chromaticity non-uniformity may be caused. For this reason, aging compensation of the display device by the display panel aging model is one of research directions for display panel compensation.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the traditional aging compensation of the display panel usually pre-supports the service life of the display panel in advance, cannot fundamentally increase the service life of display panel devices, and accelerates the aging of the display panel.
Disclosure of Invention
Therefore, it is necessary that the conventional aging compensation of the display panel usually pre-supports the lifetime of the display panel, which cannot fundamentally increase the lifetime of the display panel device, but accelerates the aging of the display panel, and a method, an apparatus, a system and a display apparatus for compensating the aging of the display panel are provided.
In order to achieve the above object, an embodiment of the present invention provides a method for compensating aging of a display panel, including the following steps:
detecting the image complexity of a display panel and the actual brightness of pixels according to an input RGB signal image to obtain an image complexity value and an actual brightness value of the pixels;
obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time;
processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel;
and obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
In one embodiment, the step of obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel within the preset display aging time includes:
obtaining an average brightness value according to the obtained actual brightness value of each pixel within the preset display aging time;
and obtaining the equivalent aging time according to the preset display aging time and the average brightness value.
In one embodiment, the step of processing the equivalent aging time based on the tensile exponential decay model to obtain the initial brightness compensation value of the display panel comprises:
processing the equivalent aging time based on the tensile index decay model to obtain the aging efficiency of the display panel;
and obtaining an initial brightness compensation value according to the aging efficiency.
In one embodiment, the step of detecting the image complexity of the display panel according to the input RGB signal image to obtain the image complexity value includes:
matching the RGB signal image with each conventional image in a preset image library;
according to the matching result, when the RGB signal image is matched with the conventional image, the image complexity value is 1;
when the RGB signal image does not match the regular image, the image complexity value is 0.
In one embodiment, the preset image library comprises any one or any combination of the following conventional images: a solid color image, a gray scale gradation image and a checkerboard grid image.
In one embodiment, the step of detecting the image complexity of the display panel according to the input RGB signal image to obtain the image complexity value further includes:
acquiring the brightness of each pixel of an RGB signal image;
obtaining a pixel brightness distribution model according to the brightness of each pixel;
and looking up a table based on the pixel brightness distribution model to obtain an image complexity value.
In one embodiment, the step of obtaining the optimized illumination compensation value according to the initial illumination compensation value and the image complexity value comprises the following steps:
and obtaining corresponding compensation voltage based on the optimized brightness compensation value, and driving the display panel based on the compensation voltage.
On the other hand, an embodiment of the present invention further provides a display panel aging compensation apparatus, including:
the image detection unit is used for detecting the image complexity of the display panel and the actual brightness of the pixels according to the input RGB signal image to obtain an image complexity value and an actual brightness value of the pixels;
the aging time equivalent unit is used for obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time;
the initial brightness compensation calculation unit is used for processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel;
and the brightness compensation optimization unit is used for obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
On the other hand, the embodiment of the invention also provides a display panel aging compensation system, which comprises a controller used for connecting the display panel; the controller is used for executing the steps of any one of the display panel aging compensation methods.
On the other hand, the embodiment of the invention further provides a display device, which comprises a display panel and the display panel aging compensation system;
the display panel aging compensation system is connected with the display panel.
One of the above technical solutions has the following advantages and beneficial effects:
in each embodiment of the above aging compensation method for the display panel, the image complexity and the actual brightness of the pixels of the display panel are detected according to the input RGB signal image, so as to obtain an image complexity value and an actual brightness value of the pixels; obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time; processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel; and obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value, and further realizing the aging compensation of the display panel. According to the method and the device, the initial brightness compensation value obtained through processing can be realized, and the aging brightness compensation optimization is carried out on the display panel according to the image complexity of the picture, so that the aging of the display panel is prevented from being accelerated too fast, and the service life of the display panel is prolonged.
Drawings
The present application will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a diagram illustrating an exemplary embodiment of a display panel aging compensation method;
FIG. 2 is a first flowchart of a method for compensating for display panel aging according to an embodiment;
FIG. 3 is a diagram illustrating a second process of a method for compensating for display panel aging according to an embodiment;
FIG. 4 is a third flowchart illustrating a method for compensating for display panel aging according to an embodiment;
FIG. 5 is a first flowchart of the image complexity processing step in one embodiment;
FIG. 6 is a diagram illustrating a second flow of image complexity processing steps in one embodiment;
FIG. 7 is a fourth flowchart illustrating a method for compensating for display panel aging according to an embodiment;
FIG. 8 is a block diagram of an embodiment of a display panel degradation compensation apparatus;
FIG. 9 is a schematic diagram of an embodiment of a display panel degradation compensation system;
fig. 10 is a schematic structural diagram of a display device in one embodiment.
Detailed Description
For a more clear understanding of the technical features, objects, and effects of the present application, specific embodiments of the present application will now be described in detail with reference to the accompanying drawings.
The display panel aging compensation method provided by the application can be applied to the application environment shown in fig. 1. Wherein the processor 102 is connected to the display device 104. The processor 102 may be, but not limited to, a single chip or an ARM (advanced RISC Machine, RISC microprocessor), and the display device 104 may be implemented by an independent display device or a display device combination composed of a plurality of display devices. Wherein the display device may include a display panel; the display panel may be, but not limited to, an OLED (Organic Light-Emitting Diode), a Micro-LED (Micro Light-Emitting Diode), a Mini-LED (Mini Light-Emitting Diode), or the like.
In one embodiment, as shown in fig. 2, a method for compensating aging of a display panel is provided, which is illustrated by applying the method to the processor 102 in fig. 1, and includes the following steps:
step S210, detecting the image complexity of the display panel and the actual brightness of the pixels according to the input RGB signal image, to obtain an image complexity value and an actual brightness value of the pixels.
Here, the RGB (Red Green Blue) signal image refers to an image of various colors obtained by changing three color channels of Red (Rad), Green (Green), and Blue (Blue) and superimposing them on each other. The display panel may be, but is not limited to, an OLED display panel, a Micro-LED display panel or a Mini-LED display panel. The display panel may include a plurality of pixels, each pixel corresponding to a gray-scale value; for example, if the gray-scale values of the pixels of the display panel are the same, the screen of the display panel is a pure color screen. The image complexity value can be used to measure the complexity of a picture image composed of pixels due to differences in gray scale values of the pixels included in the display panel. The actual brightness value range of the pixels is between 0 and 255, the brightness of the pixels with the brightness value close to 255 is higher, the brightness of the pixels with the brightness value close to 0 is lower, namely the pixels with the brightness value close to 255 are highlight, and the pixels with the brightness value close to 0 are dark.
Specifically, the processor may input an RGB signal image to the display panel, and detect the image complexity of the display panel according to the input RGB signal image to obtain an image complexity value. The processor can also detect the actual brightness of the pixels in the display panel, and further obtain the corresponding actual brightness value of the pixels.
In one example, the processor may detect actual brightness of each pixel in the display panel to obtain corresponding actual brightness value of each pixel.
And step S220, obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time.
The preset display aging time can be obtained according to system presetting. The equivalent aging time can be used to measure the time required for the brightness of the current brightness picture to be equivalent to the brightness of the initial brightness picture after aging.
Specifically, after the display panel is powered on and started, the accumulated timing display duration is performed based on the preset display aging time. The processor can obtain the actual brightness value of each pixel in the preset display aging time, and further obtain the equivalent aging time of the display panel according to the preset display aging time (namely, the accumulated time length) and the actual brightness value of each pixel.
In one example, the aging time of the equivalent initial full white luminance image is calculated from the accumulated aging time and the accumulated average luminance value.
For example: when the preset display aging time (i.e., the accumulated time duration) is 1000hr (hour), and the accumulated average brightness value obtained according to the actual brightness value of each pixel in the preset display aging time is 128, the brightness of the current full white 255-step is equivalent to the brightness of the initial 255-step after aging for 500hr (hour).
It should be noted that the above description is only an example, and is used to illustrate the concept of equivalent aging time. The actual equivalent corresponding relationship can be obtained by actually measuring the number, and the embodiment of the present application is not limited to the above equivalent relationship.
And step S230, processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel.
Among them, The tensile Exponential Decay model (SED model) refers to an aging model of a display panel. And calculating to obtain a corresponding aging curve based on the tensile index attenuation model so as to obtain the compensation coefficient of the display panel.
Specifically, the processor may process the equivalent aging time based on the tensile exponential decay model, and may further obtain an initial brightness compensation value of the display panel.
And step S240, obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
Specifically, the processor may obtain an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value. The brightness compensation under the unnecessary condition is effectively avoided, so that the influence of aging accelerated by the compensation OLED device is weakened, and meanwhile, the compensation effect is considered.
In one example, the processor multiplies the initial illumination compensation value and the image complexity value to obtain an optimized illumination compensation value.
It should be noted that the variety of display images of the display panel may greatly attract users, thereby weakening the attention of users in brightness to some extent. The more complex the image is, the more easily the influence of the luminance change is reduced.
In the embodiment of the aging compensation method for the display panel, the image complexity and the actual brightness of the pixels of the display panel are detected according to the input RGB signal image, so as to obtain the image complexity value and the actual brightness value of the pixels; obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time; processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel; and obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value, and further realizing the aging compensation of the display panel. And the aging brightness compensation optimization of the display panel is realized according to the initial brightness compensation value obtained by processing and the image complexity of the picture, so that the aging of the display panel is prevented from being accelerated too fast, and the service life of the display panel is prolonged.
In one embodiment, as shown in fig. 3, a display panel aging compensation method is provided, which is described by taking the method as an example applied to the processor 102 in fig. 1, and includes the following steps:
step S310, according to the input RGB signal image, detecting the image complexity of the display panel and the actual brightness of the pixels to obtain an image complexity value and an actual brightness value of the pixels.
And step S320, obtaining an average brightness value according to the obtained actual brightness value of each pixel in the preset display aging time.
Specifically, the actual brightness value of each pixel within the preset display aging time may be obtained based on the sampling period, and the actual brightness value of each pixel is averaged, so as to obtain the corresponding average brightness value.
For example, if the preset display aging time is 100hr (hour), and the sampling period is 1hr hour, then the actual brightness values of 100 pixels that can be sampled within the preset display aging time are obtained. And averaging the actual brightness values of the 100 pixels to obtain corresponding average brightness values.
And step S330, obtaining equivalent aging time according to the preset display aging time and the average brightness value.
Specifically, the equivalent aging time of the display panel can be calculated according to the preset display aging time (i.e., the accumulated aging time) and the average brightness value.
Step S340, processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel.
And step S350, obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
The specific content processes of step S310, step S340 and step S350 may refer to the above contents, and are not described herein again.
Specifically, according to an input RGB signal image, detecting the image complexity of a display panel to obtain an image complexity value; sampling the actual brightness value of the pixels of the display panel based on the preset display aging time to obtain the actual brightness value of each pixel; obtaining an average brightness value according to the obtained actual brightness value of each pixel within the preset display aging time; obtaining equivalent aging time according to preset display aging time and the average brightness value; processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel; according to the initial brightness compensation value and the image complexity value, the optimized brightness compensation value is obtained, so that the aging of the display panel is compensated to a certain degree, and the aging of the display panel cannot be accelerated too fast, so that the aging of the display panel is prevented from being accelerated too fast, and the service life of the display panel is prolonged.
In one embodiment, as shown in fig. 4, a display panel aging compensation method is provided, which is described by taking the method as an example applied to the processor 102 in fig. 1, and includes the following steps:
step S410, detecting the image complexity of the display panel and the actual brightness of the pixels according to the input RGB signal image, to obtain an image complexity value and an actual brightness value of the pixels.
And step S420, obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time.
And step S430, processing the equivalent aging time based on the tensile index decay model to obtain the aging efficiency of the display panel.
Wherein, the aging efficiency refers to the degree of brightness attenuation of the display panel. The tensile exponential decay model is: a ═ exp (- (tL)0 n/K)β). Wherein a is aging efficiency (i.e., luminance decay degree value), L0The initial brightness of the display panel, t the display time of the display panel, β the constant value related to the material, manufacturing process, etc. of the display panel, n the acceleration factor (constant), K the constant.
In one example, the tensile exponential decay model is built as follows:
the light emission brightness of the display panel changes with time and satisfies equation one: l ═ L0exp(-(t/τ)β). Wherein L is the initial brightness L of the display panel0Real-time brightness after t time of ignition, L0The initial brightness of the display panel, t the display time of the display panel, τ the coefficient relating to the initial brightness, and β the constant value relating to the material, manufacturing process, and the like of the display panel.
Half-life t for display panel1/2(i.e., the time required for the luminance to decay to half the initial luminance, also referred to as the lifetime of the display panel) satisfies the equation two: l is0 nt1/2C. Wherein L is0For display surfaceThe initial brightness of the panel, C and n, is constant for a given display panel.
According to equation one and half-life t1/2The definition yields equation three: τ ═ C/(L)0 n(Ln2)1/β)。
Substituting equation three into equation one yields equation four: l ═ L0exp(-(tL0 n(Ln2)1/β/C)β)。
For the same batch of display panels (e.g., OLED panels), β is a constant, can be (Ln2)1/βThe term and constant C are combined to a new constant K, and L/L is defined0For the aging efficiency (i.e. the brightness attenuation degree) of the display panel, the tensile index attenuation model of the display panel is obtained as follows: a ═ exp (- (tL)0 n/K)β)。
Step S440, obtaining an initial brightness compensation value according to the aging efficiency.
The formula for calculating the initial brightness compensation value is as follows: k is 1/a. Where k is the initial brightness compensation value and a is the aging efficiency.
And step S450, obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
The specific content processes of step S410, step S420 and step S450 may refer to the above contents, and are not described herein again.
Specifically, according to the tensile index decay model of the display panel, the aging efficiency can be obtained; obtaining an initial brightness compensation value according to the aging efficiency; and the aging brightness compensation is carried out on the display panel according to the initial brightness compensation value and the image complexity of the display panel, so that the aging of an over-fast accelerating device is avoided, the aging of the display panel is compensated to a certain degree, the aging of the display panel cannot be accelerated too fast, and the service life of the display panel is prolonged.
In one embodiment, as shown in FIG. 5, an image complexity processing step process is provided. Taking the method as an example for being applied to the processor 102 in fig. 1, the image complexity processing step procedure includes:
step S510, matching the RGB signal image with each conventional image in a preset image library.
In step S520, according to the matching result, when the RGB signal image matches the conventional image, the image complexity value is 1.
In step S530, when the RGB signal image does not match the regular image, the image complexity value is 0.
Optionally, the preset image library may include any one or any combination of the following conventional images: a solid color image, a gray scale gradation image and a checkerboard grid image. The solid image may be, but is not limited to, a solid white image or a solid black image. A grayscale gradation image refers to an image in which the brightness of each pixel in the image changes according to a gradation rule. The checkerboard image may be, but is not limited to, a black and white checkerboard image.
Specifically, the processor may match the RGB signal image input to the display panel with each conventional image in the preset image library, and determine whether the currently input RGB signal image is a conventional image (e.g., a pure white image). The processor can perform brightness compensation on the display panel when the RGB signal image is matched with the conventional image and the image complexity value is 1 according to the matching result; when the RGB signal image does not match the regular image, the image complexity value is 0, i.e., the luminance of the display panel is not compensated, and the luminance compensation of the display panel is optimized.
It should be noted that the process of brightness compensation, i.e. brightness enhancement, can obtain higher brightness by increasing the voltage applied to the display panel and the current flowing through the display panel.
In one embodiment, another image complexity processing step process is provided, as shown in FIG. 6. Taking the method as an example for being applied to the processor 102 in fig. 1, the image complexity processing step further includes:
in step S610, the brightness of each pixel of the RGB signal image is acquired.
Step S620, a pixel brightness distribution model is obtained according to the brightness of each pixel.
Step S630, performing table lookup based on the pixel brightness distribution model to obtain an image complexity value.
In particular, the pixel luminance distribution model may be used to indicate the image complexity of an RGB signal image. The processor detects the brightness of each pixel of the RGB signal image, and then obtains the brightness of each pixel; and obtaining a pixel brightness distribution model according to the brightness of each pixel. And based on the pixel brightness distribution model, inquiring an image complexity numerical value corresponding to the pixel brightness distribution model in the lookup table, and further obtaining the image complexity value.
Note that the image complexity value ranges from 0 to 1.
In the above embodiment, an image complexity value reflecting the complexity is obtained according to the input RGB signal image, and the initial luminance compensation value is adjusted based on the image complexity value, thereby optimizing the luminance compensation of the display panel. If the image complexity value is high, the initial brightness compensation value is adjusted downwards to a large extent, and the compensation effect is weakened. If the image brightness complexity value is low, the compensation coefficient is adjusted downwards (or not adjusted) to a smaller extent, the compensation effect is maintained, and then compensation under an unnecessary condition can be effectively avoided, so that the influence of accelerated aging of the display panel due to compensation is weakened, and the compensation effect is considered at the same time.
In one embodiment, as shown in fig. 7, a display panel aging compensation method is provided, which is described by taking the method as an example applied to the processor 102 in fig. 1, and includes the following steps:
step S710, detecting the image complexity of the display panel and the actual brightness of the pixel according to the input RGB signal image, to obtain an image complexity value and an actual brightness value of the pixel.
And step S720, obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time.
And step S730, processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel.
And step S740, obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
And step S750, obtaining a corresponding compensation voltage based on the optimized brightness compensation value, and driving the display panel based on the compensation voltage.
The specific content processes of the steps S710, S730, and S740 may refer to the above contents, and are not described herein again.
Specifically, according to an input RGB signal image, detecting the image complexity of a display panel and the actual brightness of pixels to obtain an image complexity value and an actual brightness value of the pixels; obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time; processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel; obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value; and based on the optimized brightness compensation value, obtaining corresponding compensation voltage, and driving the display panel based on the compensation voltage, so that the display panel obtains the compensated brightness, further aging compensation of the display panel is realized, the too-fast accelerated aging of the display panel is avoided, and the service life of the display panel is prolonged.
It should be understood that although the steps in the flowcharts of fig. 2 and 7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2 and 7 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 8, there is also provided a display panel degradation compensating apparatus including:
an image detection unit 810, configured to detect an image complexity of the display panel and an actual brightness of a pixel according to an input RGB signal image, to obtain an image complexity value and an actual brightness value of the pixel;
an aging time equivalent unit 820, configured to obtain an equivalent aging time of the display panel according to the obtained actual brightness value of each pixel within the preset display aging time;
an initial brightness compensation calculating unit 830, configured to process the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel;
and the brightness compensation optimization unit 840 is configured to obtain an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
For the specific definition of the display panel aging compensation device, reference may be made to the above definition of the display panel aging compensation method, which is not described herein again. The modules in the display panel aging compensation device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a processor in the display panel aging compensation system in a hardware form or independent of the processor in the display panel aging compensation system, and can also be stored in a memory in the display panel aging compensation system in a software form, so that the processor can call and execute the corresponding operations of the modules.
In one embodiment, as shown in FIG. 9, there is also provided a display panel aging compensation system, comprising a controller 910 for connecting a display panel; the controller 910 is configured to perform the steps of any one of the above-mentioned display panel aging compensation methods.
The controller 910 may be, but is not limited to, a single chip microcomputer or an ARM.
Specifically, the controller 910 may be configured to perform the following steps:
detecting the image complexity of a display panel and the actual brightness of pixels according to an input RGB signal image to obtain an image complexity value and an actual brightness value of the pixels;
obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time;
processing the equivalent aging time based on the tensile index decay model to obtain an initial brightness compensation value of the display panel;
and obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
Specifically, the controller 910 may perform brightness compensation optimization for aging of the display panel according to the processed initial brightness compensation value and according to the image complexity of the picture, so as to avoid too fast accelerated aging of the display panel, thereby improving the service life of the display panel.
In one embodiment, as shown in fig. 10, there is also provided a display apparatus comprising a display panel 110 and the display panel aging compensation system 120 as described above; the display panel aging compensation system 120 is connected to the display panel 110.
Among them, the display panel 110 may be a current driving type display panel. For example, the display panel 110 may be, but is not limited to, an OLED display panel, a Micro-LED display panel, a Mini-LED display panel, and the like.
For specific limitations of the display device, reference may be made to the above limitations of the display panel aging compensation system and the display panel aging compensation method, which are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the division methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display panel aging compensation method is characterized by comprising the following steps:
detecting the image complexity of a display panel and the actual brightness of pixels according to an input RGB signal image to obtain an image complexity value and an actual brightness value of the pixels;
obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time;
processing the equivalent aging time based on a tensile index decay model to obtain an initial brightness compensation value of the display panel;
and obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
2. The method according to claim 1, wherein the step of obtaining the equivalent aging time of the display panel according to the actual brightness value of each pixel in the obtained preset display aging time comprises:
obtaining an average brightness value according to the obtained actual brightness value of each pixel in the preset display aging time;
and obtaining the equivalent aging time according to the preset display aging time and the average brightness value.
3. The method of claim 1, wherein the step of processing the equivalent aging time based on the tensile exponential decay model to obtain the initial brightness compensation value of the display panel comprises:
processing the equivalent aging time based on a tensile index decay model to obtain the aging efficiency of the display panel;
and obtaining the initial brightness compensation value according to the aging efficiency.
4. The method of claim 1, wherein the step of detecting the image complexity of the display panel according to the input RGB signal image to obtain the image complexity value comprises:
matching the RGB signal image with each conventional image in a preset image library;
according to the matching result, when the RGB signal image is matched with the conventional image, the image complexity value is 1;
when the RGB signal image does not match the normal image, the image complexity value is 0.
5. The method of claim 4, wherein the preset image library comprises any one or any combination of the following regular images: a solid color image, a gray scale gradation image and a checkerboard grid image.
6. The method of claim 1, wherein the step of detecting the image complexity of the display panel according to the input RGB signal image to obtain the image complexity value further comprises:
acquiring the brightness of each pixel of the RGB signal image;
obtaining a pixel brightness distribution model according to the brightness of each pixel;
and performing table lookup based on the pixel brightness distribution model to obtain the image complexity value.
7. The method of claim 1, wherein the step of deriving an optimized illumination compensation value based on the initial illumination compensation value and the image complexity value is followed by:
and obtaining corresponding compensation voltage based on the optimized brightness compensation value, and driving the display panel based on the compensation voltage.
8. A display panel aging compensation apparatus, comprising:
the image detection unit is used for detecting the image complexity of the display panel and the actual brightness of the pixels according to the input RGB signal image to obtain an image complexity value and an actual brightness value of the pixels;
the aging time equivalent unit is used for obtaining the equivalent aging time of the display panel according to the obtained actual brightness value of each pixel in the preset display aging time;
the initial brightness compensation calculation unit is used for processing the equivalent aging time based on a tensile index decay model to obtain an initial brightness compensation value of the display panel;
and the brightness compensation optimization unit is used for obtaining an optimized brightness compensation value according to the initial brightness compensation value and the image complexity value.
9. A display panel aging compensation system, comprising a controller for connecting to a display panel; the controller is configured to perform the steps of the display panel aging compensation method of any of claims 1 to 7.
10. A display device comprising a display panel and the display panel aging compensation system of claim 9;
the display panel aging compensation system is connected with the display panel.
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Application publication date: 20200424 |