CN111430577B - Uniformity calculation method, device, controller and storage medium - Google Patents

Uniformity calculation method, device, controller and storage medium Download PDF

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Publication number
CN111430577B
CN111430577B CN202010247250.0A CN202010247250A CN111430577B CN 111430577 B CN111430577 B CN 111430577B CN 202010247250 A CN202010247250 A CN 202010247250A CN 111430577 B CN111430577 B CN 111430577B
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display panel
standard display
value
brightness
uniformity
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CN111430577A (en
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李少方
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/70—Testing, e.g. accelerated lifetime tests
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
    • H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
    • H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing

Abstract

The invention provides a uniformity calculation method, a device, a controller and a storage medium, which are used for acquiring the light emitting uniformity of a target display panel relative to a standard display panel, wherein the standard display panel and the target panel are distinguished as follows: the standard display panel pixels are formed by evaporation, the target display panel pixels are formed by ink jet, and the method comprises: acquiring the brightness value of a standard display panel; adjusting the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel; acquiring first parameter information of a light-emitting area in a standard display panel and second parameter information of the light-emitting area in a target display panel; and acquiring the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information. The scheme can quantify the light-emitting uniformity of the target display panel to provide data reference for debugging the film-forming uniformity of ink-jet printing and analyzing the performance of the OLED device.

Description

Uniformity calculation method, device, controller and storage medium
Technical Field
The present invention relates to the field of display technologies, and in particular, to a uniformity calculation method, apparatus, controller, and storage medium.
Background
At present, the OLED device manufactured by adopting the ink-jet printing technology has the advantages of low environmental requirement, high material utilization rate and the like, and is a feasible method for reducing the production cost of the OLED device.
Factors such as stability of ink, consistency of ink-jet time, volatilization degree of ink in different areas and the like in the ink-jet printing technology can finally affect the chromaticity, efficiency and service life of the OLED device, and the problems are improved by debugging the uniformity of ink-jet printing film formation and analyzing the performance of the OLED device in the later period. However, there is currently a lack of specific uniformity calculation methods to generate quantified values to provide data references for inkjet printing film formation uniformity tuning and analysis of OLED device performance.
Therefore, it is necessary to provide a uniformity calculation method and a uniformity calculation apparatus to generate quantified values to provide data references for inkjet printing film formation uniformity tuning and analysis of OLED device performance.
Disclosure of Invention
The embodiment of the invention provides a uniformity calculation method, a device, a controller and a storage medium, aiming at a standard display panel formed by evaporation and a target display panel formed by ink jet, under the condition that the brightness values of the standard display panel and the target display panel are the same, acquiring the light-emitting uniformity of the target display panel relative to the standard display panel according to first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel; the problem that data reference cannot be provided for adjusting the uniformity of ink-jet printing film forming and analyzing the performance of an OLED device due to the fact that the light-emitting uniformity of a target display panel cannot be specifically quantified at present is solved.
The embodiment of the invention provides a uniformity calculation method for obtaining the light emitting uniformity of a target display panel relative to a standard display panel, wherein the standard display panel and the target panel are distinguished as follows: the standard display panel pixels are formed by evaporation, the target display panel pixels are formed by ink jet, and the method comprises:
acquiring the brightness value of the standard display panel;
adjusting the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel;
acquiring first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel;
and acquiring the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information.
In an embodiment, the step of obtaining the brightness value of the standard display panel is preceded by:
and setting the brightness value of the standard display panel so that the brightness value of the standard display panel is in a first preset brightness range.
In an embodiment, the step of obtaining the brightness value of the standard display panel includes:
measuring the brightness of the standard display panel for multiple times to obtain multiple brightness values, wherein the number of times of measuring the brightness of the standard display panel is not less than the preset number of times;
and acquiring an average value of the plurality of brightness values, and setting the average value as the brightness value of the standard display panel.
In one embodiment, the step of obtaining the uniformity of the light emission of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information includes:
acquiring a ratio of the second area value to the first area value as a first ratio, wherein the brightness of the target area is within a second preset brightness range;
setting the first ratio as a uniformity reference value for characterizing the uniformity of the light emission of the target display panel with respect to the standard display panel.
In an embodiment, the first parameter information includes a first number, the first number is the number of light-emitting pixels in the standard display panel, the second parameter information includes a second number, the second number is the number of target pixels in the target display panel, and the step of obtaining the light-emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information includes:
acquiring a ratio of the second number to the first number as a second ratio, wherein the light-emitting brightness of the target pixel is within a third preset brightness range;
setting the second ratio as a uniformity reference value for characterizing the light emission uniformity of the target display panel with respect to the standard display panel.
An embodiment of the present invention provides a uniformity calculating apparatus for implementing the uniformity calculating method according to any one of claims 1 to 5, the uniformity calculating apparatus is configured to obtain the light emitting uniformity of a target display panel relative to a standard display panel, and the standard display panel and the target panel are distinguished by: the pixels of the standard display panel are formed by evaporation, the pixels of the target display panel are formed by ink jet, and the uniformity calculating device includes:
the first acquisition module is used for acquiring the brightness value of the standard display panel;
the first processing module is used for adjusting the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel;
the second acquisition module is used for acquiring first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel;
and the second processing module is used for acquiring the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information.
In an embodiment, the uniformity computation device further comprises:
and the setting module is used for setting the brightness value of the standard display panel so that the brightness value of the standard display panel is in a first preset brightness range.
In one embodiment, the first obtaining module includes:
the measuring module is used for measuring the brightness of the standard display panel for multiple times to obtain multiple brightness values, wherein the times of measuring the brightness of the standard display panel are not less than preset times;
and the acquisition module is used for acquiring the average value of the plurality of brightness values and setting the average value as the brightness value of the standard display panel.
Embodiments of the present invention further provide a controller, where the controller is configured to execute a plurality of instructions stored in a memory to implement all or part of the above uniformity calculation method.
Embodiments of the present invention further provide a storage medium, where a plurality of instructions are stored in the storage medium, and the instructions are used for being executed by a controller to implement all or part of the above uniformity calculation method.
The invention provides a uniformity calculation method, a device, a controller and a storage medium, aiming at a standard display panel formed by evaporation and a target display panel formed by ink jet, under the condition that the brightness values of the standard display panel and the target display panel are the same, first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel are acquired, and then the light-emitting uniformity of the target display panel relative to the standard display panel is acquired; the scheme enables the uniformity of the target display panel formed by ink jet to be quantized, and further provides data reference for adjusting the uniformity of ink jet printing film formation and analyzing the performance of OLED devices.
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The invention is further illustrated by the following figures. It should be noted that the drawings in the following description are only for illustrating some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a flowchart of a method for calculating uniformity according to an embodiment of the present invention;
FIG. 2 is a gray scale diagram of a display area of a standard display panel according to an embodiment of the present invention;
FIG. 3 is a conversion diagram of a display area of a standard display panel according to an embodiment of the present invention;
FIG. 4 is a gray scale diagram of a display area of a target display panel according to an embodiment of the present invention;
FIG. 5 is a conversion diagram of a display area of a target display panel according to an embodiment of the present invention;
FIG. 6 is a block diagram of a uniformity calculating apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of a controller and a memory according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The terms "first", "second", and the like in the present invention are used for distinguishing different objects, not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The execution main body of the image display method provided by the embodiment of the present invention may be the image display apparatus provided by the embodiment of the present invention, or an electronic device integrated with the image display apparatus, and the image display apparatus may be implemented in a hardware or software manner.
The embodiment of the invention provides a uniformity calculation method, a uniformity calculation device, a controller and a storage medium. The details will be described below separately.
In an embodiment, an embodiment of the present invention provides a uniformity calculating method for obtaining light emitting uniformity of a target display panel relative to a standard display panel, where the standard display panel and the target panel are distinguished by: the pixels of the standard display panel are formed by evaporation, and the pixels of the target display panel are formed by ink jet.
It can be understood that the light-emitting principle of the OLED display panel is to form a layer of self-light-emitting material with a thickness of tens of nanometers on the anode layer on the substrate by vacuum evaporation or ink-jet printing to form a light-emitting layer, and then form a cathode layer above the light-emitting layer; electrons and holes are respectively injected from the cathode layer and the anode layer, the injected electrons and holes are compounded in the luminous layer, related molecules in the luminous layer are excited to generate singlet excitons, and the singlet excitons emit light through radiation attenuation, so that light with corresponding colors is emitted by pixel points.
Specifically, the vacuum evaporation process is to place a substrate containing the anode layer in an evaporation vacuum chamber, place a precise metal mask plate below the substrate, and when heating a luminescent material located below the metal mask plate, small organic molecules in molecular units of the luminescent material pass through the metal mask plate and deposit to a desired position on the substrate to form the luminescent layer. The ink-jet printing process is to melt the luminescent material in a solvent to form an ink shape. And spraying the ink through a nozzle, printing between the grids of the substrate, and removing the solvent through a drying process to form the luminescent layer. Therefore, although the inkjet printing process is simple and mass-producible, the light emitting layer formed by vacuum evaporation may have a problem of bubbles or non-uniform thickness, resulting in poor brightness uniformity of the light emitting layer.
It should be noted that the conventional process for fabricating the light emitting layer is mainly vacuum evaporation or inkjet printing, and the uniformity of light emission of the standard display panel with pixels formed by evaporation is much greater than that of the standard display panel with pixels formed by inkjet printing, so the present application can be found in: the standard display panel in which the pixels are formed by vapor deposition is considered to have no problem of unevenness of the light emitting layer, that is, the luminance uniformity of the entire light emitting layer is considered to be 100% after each pixel in the light emitting layer is lighted to have the same luminance. In order to maintain a single variable, the standard display panel and the target panel referred to in the present application have the same properties except that the light emitting layer is formed in a different manner.
In one embodiment, as shown in FIG. 1, the method may include the following steps.
And S10, acquiring the brightness value of the standard display panel.
Specifically, the luminance value of the standard display panel may be obtained by measuring with an instrument such as a luminometer, a photometric instrument, or an imaging luminance meter. It will be appreciated that brightness is measured in candelas per square meter or nits, and typically brightness is measured from left to right and top to bottom when the screen displays a full white picture. For a display such as a liquid crystal display that requires a backlight, full white measurement can be performed to know the maximum light output that the display can achieve as the maximum brightness that the display panel can achieve; however, for self-emitting display devices such as OLED display panels, the brightness calculation is difficult because each pixel is addressed directly, and the brightness of each pixel will change with the sharing of the power for driving the pixel among all pixels, for example, the brightness of the full screen measured when the OLED display panel displays a full white picture will be lower than the brightness of a white square displayed in the middle of the screen, and these two cases represent two common indicators, one is standard brightness and the other is peak brightness.
It should be noted that, here, the standard display panel may be subjected to full-area or partial-area screen display, and the brightness of the first area in the standard display panel is measured as the brightness value of the standard display panel. Specifically, the first region may be the entire screen of the standard display panel, or may be a certain region in the standard display panel screen, and further, the first region may be a region near a center position of the display panel screen, or the first region may be a certain region that includes the center position and has the center position as a center point.
In one embodiment, before the step S10, the following steps may be included.
S00, setting the brightness value of the standard display panel to be in a first preset brightness range.
Specifically, the luminance value of the standard display panel can be measured in real time by using an illuminometer, a photometric instrument or an imaging luminance meter while simultaneously adjusting the corresponding anode voltage of each sub-pixel in each pixel to change the light emission condition of the sub-pixel, and further, the corresponding anode voltage of each sub-pixel can be the same, so that the light emission consistency is ensured, the light emission contribution of each sub-pixel is the same, and the sub-pixel with extremely small luminance is prevented from being used as the light emitting pixel in the later period. It can be understood that, in the subsequent steps, it is necessary to capture the display image of the standard display panel to obtain corresponding parameter values, in order to prevent the capture details from being lost due to overexposure caused by too high brightness, or to avoid the capture environment from being dark due to low brightness, therefore, the brightness value of the standard display panel can be adjusted by the anode voltage, so that the brightness value of the standard display panel is within the first preset brightness range, which may be 20 nit to 60 nit.
Note that, here, "setting the brightness value of the standard display panel" is for the first area described in step S10, and after the first area of the standard display panel is selected, in this step, the screen display may be performed only in the first area, and it is only necessary to set the brightness value in the first area to be within the first preset brightness range.
In one embodiment, the step S10 may include the following steps.
S101, measuring the brightness of the standard display panel for multiple times to obtain multiple brightness values, wherein the number of times of measuring the brightness of the standard display panel is not less than a preset number of times.
It is understood that, as described in step S10, after the first area of the standard display panel is selected, in this step, the screen display may be performed only in the first area, and the brightness in the first area may be measured multiple times to obtain multiple brightness values. Further, it may be ensured here that the luminance of the first area measured each time is within the first preset luminance range, so that the finally obtained luminance value of the standard display panel is closer to the middle value of the first preset luminance range.
S102, obtaining an average value of the brightness values, and setting the average value as the brightness value of the standard display panel.
It should be noted that, as mentioned above, the brightness of each pixel of the self-luminous display device such as the OLED display panel will vary with the power of the driving pixel shared among all the pixels, that is, the brightness of the standard display panel measured each time may not be the same, and here, according to the stable condition of the brightness of the standard display panel, experiments may be performed in advance to reasonably set the preset number of times, so that the average value may better describe the brightness value of the standard display panel.
Alternatively, if the measured brightness values are closer to a normal distribution, a median value of the brightness values may be obtained, and the median value is set as the brightness value of the standard display panel. In any way, the purpose is to obtain a more accurate brightness value of the standard display panel.
S20, adjusting the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel.
It should be noted that, in order to eliminate external factors, an instrument for measuring the luminance value of the standard display panel may be selected, and the luminance value of the target display panel may be measured, so as to increase the comparability between the luminance value of the standard display panel and the luminance value of the target display panel.
Specifically, the brightness value of the target display panel may be adjusted by referring to the adjustment manner in step S00, and it can be understood that, since there is non-uniformity in the sub-pixels of the target display panel, the brightness of each sub-pixel may not be equal, as long as the brightness value of the target display panel is equal to the brightness value of the standard display panel. Specifically, it is also possible to refer to the manner of the above steps S101 and S102 to acquire the luminance value of the target display panel and make the calculated luminance value of the target display panel and the luminance value of the standard display panel the same. It can be understood that, since the brightness value of the target display panel is the same as that of the standard display panel, the problem of overexposure or dark light does not occur when the picture of the target display panel is taken.
It should be noted that, in order to ensure the consistency and comparability of the measurement, a region corresponding to the first region in the standard display panel should be selected as the second region in the target display panel, where "the target display panel is adjusted according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel" is for the second region, where the second region and the first region are consistent in position and size.
S30, acquiring first parameter information of a light emitting region in the standard display panel and second parameter information of a light emitting region in the target display panel.
Specifically, a high-magnification microscope may be used to capture a light emitting area in the standard display panel and a light emitting area in the target display panel to obtain a standard Image and a target Image, and Image processing software such as Image J or MATLAB may be used to perform Image analysis on the standard Image and the target Image to obtain the first parameter information and the second parameter information.
Wherein the magnification of the high magnification microscope is 200 times to 500 times, and is specifically selected according to the sizes of the pixels in the standard display panel and the target display panel, and in order to improve the accuracy of the first parameter information and the second parameter information, since the minimum unit of light emission in the standard display panel and the target display panel is a sub-pixel, the magnification of the high magnification microscope is selected based on the standard that the sub-pixel in the standard display panel and the sub-pixel in the target display panel can be clearly distinguished.
It should be noted that, in order to eliminate external factors, the same high-magnification microscope may be selected to photograph a third area including a light emitting area in the standard display panel and a fourth area including a light emitting area in the target display panel, and it may also be possible to prevent omission of the light emitting area in the standard display panel and the light emitting area in the target display panel, and it is necessary to photograph the third area and the fourth area with the same exposure value, increasing the comparability of the luminance value of the standard display panel and the luminance value of the target display panel.
Note that, here, the first parameter information and the second parameter information are not acquired by a physical instrument, and for convenience and meeting the requirements of image processing, it is necessary to acquire the gray-scale values of the sub-pixels in the third region in the standard display panel and the fourth region in the target display panel.
And S40, acquiring the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information.
In an embodiment, the first parameter information includes a first area value, the first area value is an area of a light emitting area in the standard display panel, and the second parameter information includes a second area value, the second area value is an area of a target area in the target display panel, and specifically, the step S40 may include the following steps.
S401, obtaining a ratio of the second area value to the first area value as a first ratio, wherein the brightness of the target area is within a second preset brightness range.
As shown in fig. 2, the third region includes a fifth region 01 having a large grayscale value and a sixth region 02 surrounding the fifth region 01, and the grayscale value of the sixth region 02 is almost 0. It is understood that a first transition region exists in the vicinity of the intersection of the fifth region 01 and the sixth region 02, and the gray scale value of the first transition region is between 0 and the maximum gray scale value of the third region.
Specifically, for the sub-pixels located in at least two of the fifth region 01, the sixth region 02 and the first transition region, the sub-pixels may be divided into the fifth region 01, the sixth region 02 or the first transition region according to the ratio of the sub-pixels in the above three regions.
Further, as shown in fig. 3, the sub-pixels in the first transition region with gray scale values within the first preset gray scale value range may be divided into the light-emitting region 03 showing white in the figure or the non-light-emitting region 04 showing black in the figure, and it can be understood that the gray scale value of the light-emitting region 03 is greater than the gray scale value of the non-light-emitting region 04.
The light-emitting region 03 is a light-emitting region in the standard display panel, and the first area value is a total area value of the plurality of sub-pixels in the light-emitting region 03 appearing white in fig. 3. Specifically, according to the characteristics of image processing, the area S1 of the third region in fig. 2 may be obtained first, and then the total area S2 of the plurality of sub-pixels in the non-light-emitting region 04 in fig. 3 may be obtained, so that (S1-S2) is the first area.
As shown in fig. 4, the fourth region includes a seventh region 05 having a large grayscale value and an eighth region 06 surrounding the seventh region 05, and the grayscale value of the eighth region 06 is almost 0. It will be appreciated that there is a second transition region in the vicinity of the intersection of the seventh region 05 and the eighth region 06, the grey scale values in the second transition region being between 0 and the maximum grey scale value of the fourth region.
Similarly, the sub-pixels may be divided into the seventh region 05, the eighth region 06, or the second transition region according to the proportion of the sub-pixels in the above three regions.
Further, as shown in fig. 5, the sub-pixels in the second transition region with gray levels within a second preset gray level range may be divided into the target region 07 showing black in the figure or the non-target region 08 showing white in the figure, and it is understood that the gray level of the target region 07 is greater than the gray level of the non-target region 08. Specifically, the upper limit of the second preset grayscale value may be the maximum grayscale value appearing in the fourth region, and the upper limit of the second preset grayscale value may be 80% of the maximum grayscale value appearing in the fourth region. In other words, it can be considered that the regions with the gray scale values in the first 80% in the fourth region are all regions capable of emitting light normally.
The target region 07 is a target region in the target display panel, and the second area value is a total area value of the plurality of sub-pixels in the target region 07 appearing black in fig. 5. Specifically, according to the characteristics of image processing, the maximum gray level value of the fourth area in fig. 5 may be obtained, and then the second preset gray level value range is obtained through calculation, so as to obtain the target area 07 in fig. 5, and then the total area S3 of the plurality of sub-pixels in the target area 07 in fig. 5 is obtained, if S3 is the second area, the ratio of the second area value to the first area is S3/(S1-S2), that is, the first ratio is S3/(S1-S2).
S402, setting the first ratio as a uniformity reference value, wherein the uniformity reference value is used for representing the light emitting uniformity of the target display panel relative to the standard display panel.
It is to be understood that, since the luminance uniformity of the entire standard display panel is considered to be 100%, when other conditions are the same, it may be considered that the light emitting regions in the standard display panel all emit light normally with the same luminance, that is, the first area may represent a total area value of the regions in a light emitting state that the standard display panel or the target display panel should have under normal light emission. On one hand, because some unit regions corresponding to pixels with poor quality caused by inkjet printing exist in the target display panel, the luminance of the unit regions cannot meet the requirement of normal light emission, and on the other hand, some unit regions with relatively large gray-scale values, which greatly contribute to the luminance of the fourth region, also exist in the target display panel, so that it can be considered that the regions with the gray-scale values of the fourth region that are only in the first 80% are all regions capable of normal light emission, that is, the second area can represent the total area value of the plurality of sub-pixels that are actually in a light-emitting state and exist in the target display panel under normal light emission.
Further, the first ratio S3/(S1-S2) obtained by comparing the second area with the first area is a ratio representing a total area value of the region in a light-emitting state actually possessed by the target display panel under normal light emission and a total area value of the region in a light-emitting state that the standard display panel or the target display panel should possess under normal light emission, so that the first ratio can be used as the uniformity reference value to represent the light-emitting uniformity of the target display panel relative to the standard display panel.
In an embodiment, the first parameter information includes a first number, the first number is the number of light-emitting pixels in the standard display panel, and the second parameter information includes a second number, the second number is the number of target pixels in the target display panel, and specifically, the step S40 may also include the following steps.
And S403, acquiring a ratio of the second number to the first number as a second ratio, wherein the light-emitting brightness of the target pixel is within a third preset brightness range.
Here, referring to the relevant description in step S401, the light-emitting pixels are pixels in the light-emitting region 03 appearing white in fig. 3, each of the light-emitting pixels includes a plurality of sub-pixels, and the first number may be understood as the total number of the plurality of sub-pixels in the light-emitting region 03. Specifically, according to the characteristics of image processing, the number of the sub-pixels in the third area in fig. 2 may be obtained first, for example, the sub-pixels in fig. 2 are distributed in 512 columns and 1184 rows, and then the total number of the sub-pixels in the third area other than the light-emitting pixels is obtained, for example, the total number of the sub-pixels in the third area other than the light-emitting pixels is 183206, and then the first number is 423002.
As shown in fig. 4, the fourth region includes a seventh region 05 having a large grayscale value and an eighth region 06 surrounding the seventh region 05, and the grayscale value of the eighth region 06 is almost 0. It is understood that a second transition region exists in the vicinity of the intersection of the seventh region 05 and the eighth region 06, and the gray scale value of the sub-pixel or unit region in the second transition region is between 0 and the maximum gray scale value of the fourth region.
Further, the sub-pixels in the second transition region whose gray-scale values are within the third preset gray-scale value range may be divided into target pixels in the target display panel, and it can be understood that the gray-scale value of each target pixel is greater than the gray-scale values of other sub-pixels in the fourth region. Specifically, the third preset gray scale value range may be equal to the second preset gray scale value range.
The first number is the total number of the sub-pixels in the luminous pixels in the standard display panel, and the second number is the total number of the sub-pixels in the target display panel. Specifically, according to the characteristics of image processing, the maximum gray-scale value of the fourth area in fig. 5 may be obtained, the third preset gray-scale value range is obtained through calculation, so as to obtain the target pixel, and then the number of the sub-pixels in the target pixel is obtained as the second number, for example, where the second number is 306010, the ratio of the second number to the first number is 306010/423002 × 100%, that is, the second ratio is 72.3%.
S404, setting the second ratio as a uniformity reference value, wherein the uniformity reference value is used for representing the light emitting uniformity of the target display panel relative to the standard display panel.
It is to be understood that, since the luminance uniformity of the entire standard display panel is considered to be 100%, when other conditions are the same, each of the light-emitting pixels in the standard display panel may be considered to normally emit light with the same luminance, that is, the first number may represent a total number of pixels in a light-emitting state that the standard display panel or the target display panel should have under normal light emission. On one hand, because some pixels with poor quality caused by ink jet printing exist in the target display panel, the light emitting brightness of the pixels cannot meet the requirement of normal light emission, and on the other hand, some pixels with relatively large gray-scale values, which make a large contribution to the brightness of the fourth region, also exist in the target display panel, so that it can be considered that the pixels capable of normally emitting light exist in the fourth region as long as the first 80% of the gray-scale values exist in the fourth region, that is, the second number can represent the total number value of the plurality of sub-pixels actually in the light emitting state under the normal light emission of the target display panel.
Further, the second ratio obtained by comparing the second number with the first number is a ratio of a value representing the total number of pixels in a light-emitting state actually possessed by the target display panel under normal light emission and a value representing the total number of pixels in a light-emitting state that the standard display panel or the target display panel should possess under normal light emission, and thus the second ratio can be used as the uniformity reference value for characterizing the light-emitting uniformity of the target display panel relative to the standard display panel.
In order to better implement the above method, the present application also provides a uniformity calculating apparatus, please refer to the block diagram shown in fig. 6, and the uniformity calculating apparatus 10 may include the following modules.
A first obtaining module 101, where the first obtaining module 101 is configured to obtain a brightness value of the standard display panel.
Specifically, the first obtaining module 101 may be a module including an illuminometer, a photometric instrument, or an imaging luminance meter, and is configured to measure the luminance of the standard display panel to obtain the luminance value of the standard display panel. It will be appreciated that brightness is measured in candelas per square meter or nits, and typically brightness is measured from left to right and top to bottom when the screen displays a full white picture. For a display such as a liquid crystal display that requires a backlight, the maximum light output that the display can achieve can be known as the maximum brightness that the display panel can achieve by performing a full white measurement; however, for self-emitting display devices such as OLED display panels, the brightness calculation is difficult because each pixel is addressed directly, and the brightness of each pixel will change with the sharing of the power for driving the pixel among all pixels, for example, the brightness of the full screen measured when the OLED display panel displays a full white picture will be lower than the brightness of a white square displayed in the middle of the screen, and these two cases represent two common indicators, one is standard brightness and the other is peak brightness.
It should be noted that, here, the standard display panel may be subjected to image display in a whole area or a partial area, and the first obtaining module 101 measures the brightness of the first area in the standard display panel as the brightness value of the standard display panel. Specifically, the first region may be the entire screen of the standard display panel, or may be a certain region in the standard display panel screen, and further, the first region may be a region near a center position of the display panel screen, or the first region may be a certain region that includes the center position and has the center position as a center point.
In an embodiment, the uniformity computing device 10 also includes the following modules.
A setting module 100, where the setting module 100 is configured to set a brightness value of the standard display panel, so that the brightness value of the standard display panel is within a first preset brightness range.
Specifically, the setting module 100 may simultaneously adjust the anode voltage corresponding to each sub-pixel in each pixel to change the light emitting condition of the sub-pixel, and simultaneously measure the luminance value of the standard display panel in real time through the first obtaining module 101, further, the anode voltage corresponding to each sub-pixel may be the same, so as to ensure the light emitting consistency, so that the light emitting contribution of each sub-pixel is the same, and the sub-pixel with extremely small luminance is prevented from being used as the light emitting pixel in the later period. It can be understood that, in the subsequent steps, it is necessary to capture the display image of the standard display panel to obtain corresponding parameter values, in order to prevent the capture details from being lost due to overexposure caused by too high brightness, or to avoid the capture environment from being dark due to less brightness, the anode voltage may be adjusted so that the brightness value of the standard display panel is within the first preset brightness range, where the first preset brightness range may be 20 nit to 60 nit.
It should be noted that, here, the setting module 100 "sets the brightness value of the standard display panel" is for the first area described above, after the first area of the standard display panel is selected, the screen display may be performed only in the first area, and the setting module 100 only needs to set the brightness value in the first area to be within the first preset brightness range.
In one embodiment, the first obtaining module 101 includes the following modules.
The measuring module 1011 is configured to measure the brightness of the standard display panel for multiple times to obtain multiple brightness values, where the number of times of measuring the brightness of the standard display panel is not less than a preset number of times.
It can be understood that, after the first area of the standard display panel is selected, the screen display may be performed only in the first area, and the measuring module 1011 measures the brightness in the first area multiple times to obtain multiple brightness values. Further, here, the measurement module 1011 may also ensure that the brightness of the first area measured each time is within the first preset brightness range, so that the finally obtained brightness value of the standard display panel is closer to the middle value of the first preset brightness range.
An obtaining module 1012, wherein the obtaining module 1012 is configured to obtain an average value of the plurality of brightness values, and set the average value as a brightness value of the standard display panel.
It should be noted that, as mentioned above, the brightness of each pixel of the self-luminous display device such as the OLED display panel will vary with the power of the driving pixel shared among all the pixels, that is, the brightness of the standard display panel measured each time may not be the same, and here, according to the stable condition of the brightness of the standard display panel, experiments may be performed in advance to reasonably set the preset number of times, so that the average value may better describe the brightness value of the standard display panel.
Alternatively, if the plurality of brightness values measured by the obtaining module 1012 are relatively close to a normal distribution, the obtaining module 1012 may also obtain a median value of the plurality of brightness values, and set the median value as the brightness value of the standard display panel. In any way, the purpose of the obtaining module 1012 is to obtain the brightness value of the standard display panel accurately.
A first processing module 102, where the first processing module 102 is configured to adjust the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel.
It should be noted that, in order to eliminate external factors, an instrument for measuring the luminance value of the standard display panel may be selected, and the luminance value of the target display panel may be measured, so as to increase the comparability between the luminance value of the standard display panel and the luminance value of the target display panel.
Specifically, the first processing module 102 may adjust the luminance value of the target display panel by referring to the adjustment manner of the setting module 100, and it can be understood that, since there is non-uniformity in the sub-pixels of the target display panel, the luminance of each sub-pixel may not be equal, and the first processing module 102 only needs to ensure that the luminance value of the target display panel is equal to the luminance value of the standard display panel. In particular, the first processing module 102 may also refer to the above-mentioned measuring module 1011 and the obtaining module 1012 to obtain the brightness value of the target display panel, and make the calculated brightness value of the target display panel and the brightness value of the standard display panel the same. It can be understood that, since the brightness value of the target display panel is the same as that of the standard display panel, the problem of overexposure or dark light does not occur when the picture of the target display panel is taken.
It should be noted that, in order to ensure the consistency and comparability of the measurement, an area corresponding to the first area in the standard display panel should be selected as the second area in the target display panel, where the first processing module 102 "adjusts the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel" is for the second area, where the second area and the first area are consistent in position and size.
A second obtaining module 103, where the second obtaining module 103 is configured to obtain first parameter information of a light emitting area in the standard display panel and second parameter information of a light emitting area in the target display panel.
Specifically, the second obtaining module 103 may be a module including a high-power microscope and Image processing software, the high-power microscope in the second obtaining module 103 first photographs a light emitting region in the standard display panel and a light emitting region in the target display panel to obtain a standard Image and a target Image, respectively, and the Image processing software such as Image J or MATLAB in the second obtaining module 103 then performs Image analysis on the standard Image and the target Image to obtain the first parameter information and the second parameter information.
In order to improve the accuracy of the first parameter information and the second parameter information, since the minimum unit of light emission in the standard display panel and the target display panel is a sub-pixel, the magnification of the high-power microscope in the second obtaining module 103 is selected based on the standard that the sub-pixel in the standard display panel and the sub-pixel in the target display panel can be clearly distinguished.
It should be noted that, in order to eliminate external factors, the high-power microscope in the second acquisition module 103 may be used to photograph a third area including a light emitting area in the standard display panel and a fourth area including a light emitting area in the target display panel, and may also prevent omission of the light emitting area in the standard display panel and the light emitting area in the target display panel, and the high-power microscope in the second acquisition module 103 needs to photograph the third area and the fourth area with the same exposure value, so as to increase the comparability between the luminance value of the standard display panel and the luminance value of the target display panel.
It should be noted that, here, the Image processing software such as Image J or MATLAB in the second obtaining module 103 is used as a non-physical instrument to obtain the first parameter and the second parameter information, and for convenience and meeting the requirement of Image processing, the Image processing software such as Image J or MATLAB in the second obtaining module 103 needs to obtain the gray-scale values of the sub-pixels in the third region in the standard display panel and the fourth region in the target display panel.
A second processing module 104, where the second processing module 104 is configured to obtain, according to the first parameter information and the second parameter information, light-emitting uniformity of the target display panel relative to the standard display panel.
In an embodiment, the first parameter information includes a first area value, the first area value is an area of a light emitting area in the standard display panel, the second parameter information includes a second area value, the second area value is an area of a target area in the target display panel, and specifically, the second processing module 104 includes the following modules.
A first obtaining submodule 1041, where the first obtaining submodule 1041 is configured to obtain a ratio of the second area value to the first area value as a first ratio, and the light emitting brightness of the target area is within a second preset brightness range.
As shown in fig. 2, the third region includes a fifth region 01 having a large grayscale value and a sixth region 02 surrounding the fifth region 01, and the grayscale value of the sixth region 02 is almost 0. It is understood that a first transition region exists in the vicinity of the intersection of the fifth region 01 and the sixth region 02, and the gray scale value of the first transition region is between 0 and the maximum gray scale value of the third region.
Specifically, for the sub-pixels located in at least two of the fifth area 01, the sixth area 02 and the first transition area, the first obtaining sub-module 1041 may divide the sub-pixels into the fifth area 01, the sixth area 02 or the first transition area according to the proportion of the sub-pixels in the above three areas.
Further, as shown in fig. 3, the first obtaining sub-module 1041 may divide the sub-pixels in the first transition region, whose gray-scale values are within the first preset gray-scale value range, into the light-emitting region 03 showing white in the drawing or the non-light-emitting region 04 showing black in the drawing, and it can be understood that the gray-scale value of the light-emitting region 03 is greater than the gray-scale value of the non-light-emitting region 04.
The light-emitting region 03 is a light-emitting region in the standard display panel, and the first area value is a total area value of the plurality of sub-pixels in the light-emitting region 03 appearing white in fig. 3. Specifically, according to the characteristics of image processing, the first obtaining sub-module 1041 may obtain the area S1 of the third region in fig. 2 first, and then obtain the total area S2 of the plurality of sub-pixels in the non-light emitting region 04 in fig. 3, so that (S1-S2) is the first area.
As shown in fig. 4, the fourth region includes a seventh region 05 having a large grayscale value and an eighth region 06 surrounding the seventh region 05, and the grayscale value of the eighth region 06 is almost 0. It will be appreciated that there is a second transition region in the vicinity of the intersection of the seventh region 05 and the eighth region 06, the grey scale value in the second transition region being between 0 and the maximum grey scale value of the fourth region.
Similarly, the first obtaining sub-module 1041 may divide the sub-pixels into the seventh region 05, the eighth region 06, or the second transition region according to the proportion of the sub-pixels in the above three regions.
Further, as shown in fig. 5, the first obtaining sub-module 1041 may divide the sub-pixels in the second transition region, whose gray levels are within a second preset gray level range, into the target region 07 showing black in the figure or the non-target region 08 showing white in the figure, and as can be understood, the gray level of the target region 07 is greater than the gray level of the non-target region 08. Specifically, the upper limit of the second preset grayscale value may be the maximum grayscale value appearing in the fourth region, and the upper limit of the second preset grayscale value may be 80% of the maximum grayscale value appearing in the fourth region. In other words, it can be considered that the regions with the gray scale values in the first 80% in the fourth region are all regions capable of emitting light normally.
The target region 07 is a target region in the target display panel, and the second area value is a total area value of the plurality of sub-pixels in the target region 07 appearing black in fig. 5. Specifically, according to the characteristics of image processing, the first obtaining sub-module 1041 may first obtain a maximum gray-scale value of the fourth area in fig. 5, then calculate to obtain the second preset gray-scale value range, so as to obtain the target area 07 in fig. 5, then obtain a total area S3 of the plurality of sub-pixels in the target area 07 in fig. 5, where S3 is the second area, and a ratio of the second area value to the first area is S3/(S1-S2), that is, the first ratio is S3/(S1-S2).
A first processing sub-module 1042, the first processing sub-module 1042 being configured to set the first ratio to a uniformity reference value, the uniformity reference value being used to characterize a light emitting uniformity of the target display panel relative to the standard display panel.
It is to be understood that, since the luminance uniformity of the entire standard display panel is considered to be 100%, when other conditions are the same, it may be considered that the light emitting regions in the standard display panel all emit light normally with the same luminance, that is, the first area may represent a total area value of the regions in a light emitting state that the standard display panel or the target display panel should have under normal light emission. On one hand, because some unit regions corresponding to pixels with poor quality caused by inkjet printing exist in the target display panel, the luminance of the unit regions cannot meet the requirement of normal light emission, and on the other hand, some unit regions with relatively large gray-scale values, which greatly contribute to the luminance of the fourth region, also exist in the target display panel, so that it can be considered that the regions with the gray-scale values of the fourth region that are only in the first 80% are all regions capable of normal light emission, that is, the second area can represent the total area value of the plurality of sub-pixels that are actually in a light-emitting state and exist in the target display panel under normal light emission.
Further, the first ratio S3/(S1-S2) obtained by comparing the second area with the first area is a ratio representing a total area value of the region in a light-emitting state actually possessed by the target display panel under normal light emission and a total area value of the region in a light-emitting state that the standard display panel or the target display panel should possess under normal light emission, so the first processing sub-module 1042 may set the first ratio as the uniformity reference value for characterizing the light-emitting uniformity of the target display panel relative to the standard display panel.
In an embodiment, the first parameter information includes a first number, the first number is the number of light-emitting pixels in the standard display panel, and the second parameter information includes a second number, the second number is the number of target pixels in the target display panel, and specifically, the second obtaining module 104 further includes the following modules.
A second obtaining submodule 1043, where the second obtaining submodule 1043 is configured to obtain a ratio of the second number to the first number as a second ratio, and the light-emitting brightness of the target pixel is in a third preset brightness range.
Here, referring to the relevant description in the first obtaining sub-module 1041, the light-emitting pixels are pixels in the light-emitting area 03 appearing white in fig. 3, each of the light-emitting pixels includes a plurality of sub-pixels, and the first number may be understood as a total number of the plurality of sub-pixels in the light-emitting area 03. Specifically, according to the characteristics of image processing, the second obtaining sub-module 1043 may first obtain the number of sub-pixels in the third area in fig. 2, for example, the sub-pixels in fig. 2 are distributed according to 512 columns and 1184 rows, and then obtain the total number of sub-pixels in the third area except for the light-emitting pixel, for example, the total number of sub-pixels in the third area except for the light-emitting pixel is 183206, and then the first number is 423002.
As shown in fig. 4, the fourth region includes a seventh region 05 having a large grayscale value and an eighth region 06 surrounding the seventh region 05, and the grayscale value of the eighth region 06 is almost 0. It is understood that a second transition region exists in the vicinity of the intersection of the seventh region 05 and the eighth region 06, and the gray scale value of the sub-pixel or unit region in the second transition region is between 0 and the maximum gray scale value of the fourth region.
Further, the second obtaining sub-module 1043 may divide the sub-pixels in the second transition region whose gray-scale values are within the third preset gray-scale value range into target pixels in the target display panel, and it can be understood that the gray-scale value of each target pixel is greater than the gray-scale values of other sub-pixels in the fourth region. Specifically, the third preset gray scale value range may be equal to the second preset gray scale value range.
The first number is the total number of the sub-pixels in the luminous pixels in the standard display panel, and the second number is the total number of the sub-pixels in the target display panel. Specifically, according to the characteristics of image processing, the second obtaining sub-module 1043 may first obtain the maximum gray-scale value of the fourth area in fig. 5, then calculate to obtain the third preset gray-scale value range, so as to obtain the target pixel, and then obtain the number of the sub-pixels in the target pixel as the second number, for example, where the second number is 306010, for example, where the second number is 306010, then the ratio of the second number to the first number is 306010/423002 × 100%, that is, the second ratio is 72.3%.
A second processing sub-module 1044 for setting the second ratio as a uniformity reference value, the uniformity reference value being used to characterize the light emitting uniformity of the target display panel relative to the standard display panel.
It is to be understood that since the luminance uniformity of the entire standard display panel is considered to be 100%, when other conditions are the same, each of the light emitting pixels in the standard display panel may be considered to normally emit light with the same luminance, that is, the first number may represent a total number of pixels in a light emitting state that the standard display panel or the target display panel should have under normal light emission. On one hand, because some pixels with poor quality caused by ink jet printing exist in the target display panel, the light emitting brightness of the pixels cannot meet the requirement of normal light emitting, and on the other hand, some pixels with larger gray-scale values, which make a large contribution to the brightness of the fourth region, also exist in the target display panel, so that it can be considered that the pixels with the gray-scale values in the fourth region that are in the first 80% are all pixels capable of normally emitting light, that is, the second number can represent the total number value of the pixels of the plurality of sub-pixels that are actually in the light emitting state under normal light emitting of the target display panel.
Further, the second ratio obtained by comparing the second number with the first number is a ratio of a value representing the total number of pixels in a light-emitting state actually possessed by the target display panel under normal light emission and a value representing the total number of pixels in a light-emitting state that the standard display panel or the target display panel should possess under normal light emission, so the second processing sub-module 1044 may set the second ratio as the uniformity reference value for characterizing the uniformity of light emission of the target display panel relative to the standard display panel.
A controller and memory are also provided in an embodiment.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a controller and a memory according to an embodiment of the invention.
The memory 201 may be used to store software programs and modules, which mainly include a program storage area and a data storage area. The controller 202 executes various functional applications and data processing by executing software programs and modules stored in the memory 201.
The controller 202 performs various functions and processes data by running or executing software programs and/or modules stored in the memory 201 and calling data stored in the memory 201, thereby performing overall monitoring.
In some embodiments, the controller 202 is configured to obtain the brightness value of the standard display panel.
In some embodiments, the controller 202 is configured to adjust the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel.
In some embodiments, the controller 202 is configured to obtain first parameter information of a light emitting region in the standard display panel and second parameter information of a light emitting region in the target display panel.
In some embodiments, the controller 202 is configured to obtain the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information.
In some embodiments, before the controller 202 is configured to obtain the brightness value of the standard display panel, the controller 202 is further configured to set the brightness value of the standard display panel so that the brightness value of the standard display panel is within a first preset brightness range.
In some embodiments, the controller 202 is configured to obtain the brightness value of the standard display panel, which may specifically be as follows:
the controller 202 is configured to measure the brightness of the standard display panel for multiple times to obtain multiple brightness values, where the number of times of measuring the brightness of the standard display panel is not less than a preset number of times; and
the controller 202 is configured to obtain an average value of the plurality of luminance values and set the average value as a luminance value of the standard display panel.
In some embodiments, the first parameter information includes a first area value, the first area value is an area of a light emitting area in the standard display panel, the second parameter information includes a second area value, the second area value is an area of a target area in the target display panel, and the controller 202 is configured to obtain the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information, which may be as follows:
the controller 202 is configured to obtain a ratio of the second area value to the first area value as a first ratio, where the light-emitting brightness of the target area is within a second preset brightness range;
the controller 202 is configured to set the first ratio as a uniformity reference value, which is used to characterize the uniformity of the light emission of the target display panel relative to the standard display panel.
In some embodiments, the first parameter information includes a first number, the first number is the number of light-emitting pixels in the standard display panel, the second parameter information includes a second number, the second number is the number of target pixels in the target display panel, and the controller 202 is configured to obtain the uniformity of light emission of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information, which may be as follows:
the controller 202 is configured to obtain a ratio of the second number to the first number as a second ratio, where the light-emitting brightness of the target pixel is within a third preset brightness range;
the controller 202 is configured to set the second ratio as a uniformity reference value, which is used to characterize the light emitting uniformity of the target display panel relative to the standard display panel.
It should be noted that, those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program to instruct related hardware, where the program can be stored in a computer readable storage medium, such as a memory of an electronic device, and executed by at least one processor in the electronic device, and during the execution process, the flow of the embodiments, such as the charge reminder method, can be included. Among others, the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The invention provides a uniformity calculation method, a device, a controller and a storage medium, aiming at a standard display panel formed by evaporation and a target display panel formed by ink jet, under the condition that the brightness values of the standard display panel and the target display panel are the same, first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel are acquired, and then the light-emitting uniformity of the target display panel relative to the standard display panel is acquired; the scheme enables the uniformity of the target display panel formed by ink jet to be quantized, and further provides data reference for adjusting the uniformity of ink jet printing film formation and analyzing the performance of OLED devices.
The uniformity calculation method, apparatus, controller and storage medium provided in the embodiments of the present invention are described in detail above, and each functional module may be integrated into one processing chip, or each module may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; and for those skilled in the art, according to the idea of the present invention, 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 invention.

Claims (10)

1. A uniformity calculation method is used for obtaining the light emitting uniformity of a target display panel relative to a standard display panel, wherein the standard display panel and the target display panel are distinguished by: the standard display panel pixels are formed by evaporation, the target display panel pixels are formed by ink jet, and the method comprises:
acquiring the brightness value of the standard display panel;
adjusting the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel;
acquiring first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel;
and acquiring the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information.
2. The uniformity calculation method according to claim 1, wherein the step of obtaining the luminance value of the standard display panel is preceded by:
and setting the brightness value of the standard display panel so that the brightness value of the standard display panel is in a first preset brightness range.
3. The uniformity calculation method according to claim 1, wherein the step of obtaining the luminance value of the standard display panel comprises:
measuring the brightness of the standard display panel for multiple times to obtain multiple brightness values, wherein the number of times of measuring the brightness of the standard display panel is not less than the preset number of times;
obtaining an average value of the plurality of brightness values, and setting the average value as a brightness value of the standard display panel.
4. The uniformity calculation method according to claim 1, wherein the first parameter information includes a first area value, the first area value is an area of a light emitting area in the standard display panel, the second parameter information includes a second area value, the second area value is an area of a target area in the target display panel, and the step of obtaining the light emission uniformity of the target display panel with respect to the standard display panel based on the first parameter information and the second parameter information comprises:
acquiring a ratio of the second area value to the first area value as a first ratio, wherein the target area is an area of which the light-emitting brightness in the light-emitting area in the target display panel is within a second preset brightness range;
setting the first ratio as a uniformity reference value for characterizing the uniformity of light emission of the target display panel with respect to the standard display panel.
5. The uniformity calculation method according to claim 1, wherein the first parameter information includes a first number, the first number being the number of light emitting pixels in the standard display panel, the second parameter information includes a second number, the second number being the number of target pixels in the target display panel, and the step of obtaining the light emission uniformity of the target display panel with respect to the standard display panel based on the first parameter information and the second parameter information comprises:
acquiring a ratio of the second number to the first number as a second ratio, wherein the target pixel is a pixel of which the light-emitting brightness in the light-emitting area in the target display panel is within a third preset brightness range;
setting the second ratio as a uniformity reference value for characterizing the uniformity of light emission of the target display panel with respect to the standard display panel.
6. A uniformity calculation apparatus for implementing the uniformity calculation method according to any one of claims 1 to 5, wherein the uniformity calculation apparatus is configured to obtain a light emission uniformity of a target display panel with respect to a standard display panel, and the standard display panel and the target display panel are distinguished by: the pixels of the standard display panel are formed by evaporation, the pixels of the target display panel are formed by ink jet, and the uniformity calculating device includes:
the first acquisition module is used for acquiring the brightness value of the standard display panel;
the first processing module is used for adjusting the target display panel according to the brightness value of the standard display panel until the brightness value of the target display panel is the same as the brightness value of the standard display panel;
the second acquisition module is used for acquiring first parameter information of a light-emitting area in the standard display panel and second parameter information of the light-emitting area in the target display panel;
and the second processing module is used for acquiring the light emitting uniformity of the target display panel relative to the standard display panel according to the first parameter information and the second parameter information.
7. The uniformity computation apparatus of claim 6, further comprising:
and the setting module is used for setting the brightness value of the standard display panel so that the brightness value of the standard display panel is in a first preset brightness range.
8. The uniformity computing device of claim 6, wherein the first obtaining module comprises:
the measuring module is used for measuring the brightness of the standard display panel for multiple times to obtain multiple brightness values, wherein the number of times of measuring the brightness of the standard display panel is not less than the preset number of times;
and the acquisition module is used for acquiring the average value of the plurality of brightness values and setting the average value as the brightness value of the standard display panel.
9. A controller for executing instructions stored in a memory to implement the uniformity calculation method of any of claims 1-5.
10. A storage medium having stored therein instructions for execution by a controller to implement a uniformity computation method according to any of claims 1-5.
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