CN109616054B - Brightness compensation method, display and computer storage medium - Google Patents
Brightness compensation method, display and computer storage medium Download PDFInfo
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- CN109616054B CN109616054B CN201910144769.3A CN201910144769A CN109616054B CN 109616054 B CN109616054 B CN 109616054B CN 201910144769 A CN201910144769 A CN 201910144769A CN 109616054 B CN109616054 B CN 109616054B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The embodiment of the application discloses a brightness compensation method, a display and a computer storage medium, wherein the brightness compensation method is applied to the display, the display is provided with a detection device, and the brightness compensation method comprises the following steps: after the driving current is switched in, detecting the luminous pixel through a detection device to obtain a real-time light parameter corresponding to the luminous pixel; judging whether Mura exists in the display or not according to the original parameters and the real-time light parameters corresponding to the luminous pixels; and if Mura exists, adjusting the driving current according to the real-time light parameters to perform brightness compensation.
Description
Technical Field
The embodiment of the application relates to the technical field of flat panel display, in particular to a brightness compensation method, a display and a computer storage medium.
Background
In the range of more than one pixel point, the brightness is not uniform when a pure gray image is displayed, namely the Mura phenomenon in the industry. Mura is originally a Japanese language, and as liquid crystal displays in Japan are widely used around the world, this word becomes a standard common in the display industry in the display world. The Mura phenomenon has become a bottleneck restricting the development of displays.
At present, in the production process, the occurrence probability of the Mura phenomenon can be reduced by methods of improving the process level or improving the purity of raw materials and the like, and for a manufactured display with shaped physical characteristics, the brightness of a pixel point is corrected mainly by a mode of performing brightness compensation on a display image in the prior art, so that the Mura phenomenon is improved.
Disclosure of Invention
The embodiment of the application provides a brightness compensation method, a display and a computer storage medium, which can effectively compensate the brightness of the display, thereby realizing the real-time compensation of Mura and improving the display effect.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the application provides a brightness compensation method, which is applied to a display, wherein the display is provided with a detection device, and the method comprises the following steps:
after the driving current is switched in, detecting the luminous pixel through the detection device to obtain a real-time light parameter corresponding to the luminous pixel;
judging whether Mura exists in the display or not according to the original parameters corresponding to the luminous pixels and the real-time light parameters;
and if the Mura exists, adjusting the driving current according to the real-time light parameters to perform the brightness compensation.
In the above scheme, the real-time light parameter includes real-time intensity or real-time brightness.
In the above solution, when the display is a top-emission mechanism, the cathode layer of the display configures the detection device.
In the above scheme, when the display is a bottom emission mechanism, the detection device is configured on the back plate of the display.
In the foregoing solution, the determining whether Mura exists in the display according to the original parameter corresponding to the light-emitting pixel and the real-time light parameter includes:
when the real-time light parameters are not equal to the original parameters, judging that the Mura exists;
and when the real-time light parameters are equal to the original parameters, judging that the Mura does not exist.
In the above scheme, the adjusting the driving current according to the real-time light parameter to perform the brightness compensation includes:
adjusting the driving current according to the real-time light parameters to obtain the adjusted driving current;
and switching in the adjusted driving current to perform the brightness compensation.
In the above scheme, the adjusting the driving current according to the real-time light parameter to perform the brightness compensation includes:
determining a target current according to the original parameters and the real-time light parameters;
and adjusting the driving current according to the target current so as to perform the brightness compensation.
In the above solution, the determining a target current according to the original parameter and the real-time light parameter includes:
determining a proportional value according to the original parameters and the real-time light parameters;
and determining the target current according to the proportional value and the driving current.
The embodiment of the application provides a display, the display is configured with detection device, the display includes: a detection unit, a judgment unit and an adjustment unit,
the detection unit is used for detecting the luminous pixel through the detection device after the driving current is switched in to obtain a real-time light parameter corresponding to the luminous pixel;
the judging unit is used for judging whether Mura exists in the display or not according to the original parameters corresponding to the luminous pixels and the real-time light parameters;
and the adjusting unit is used for adjusting the driving current according to the real-time light parameters to perform the brightness compensation if the Mura is judged to exist.
In the above scheme, the real-time light parameter includes real-time intensity or real-time brightness.
In the above solution, when the display is a top-emission mechanism, the cathode layer of the display configures the detection device.
In the above scheme, when the display is a bottom emission mechanism, the detection device is configured on the back plate of the display.
In the foregoing scheme, the determining unit is specifically configured to determine that the Mura exists when the real-time light parameter is not equal to the original parameter; and when the real-time light parameters are equal to the original parameters, judging that the Mura does not exist.
In the above scheme, the adjusting unit is specifically configured to adjust the driving current according to the real-time light parameter to obtain an adjusted driving current; and switching in the adjusted driving current to perform the brightness compensation.
In the above scheme, the adjusting unit determines a target current specifically according to the original parameter and the real-time light parameter; and adjusting the driving current according to the target current to perform the brightness compensation.
In the above scheme, the adjusting unit is specifically configured to determine a ratio value according to the original parameter and the real-time light parameter; and determining the target current according to the proportional value and the driving current.
An embodiment of the present application provides a display, which includes a processor, a memory storing instructions executable by the processor, a cathode layer, an organic light emitting layer, and an anode strip, wherein the display is configured with a detection device, and when the instructions are executed by the processor, the brightness compensation method as described above is implemented.
The embodiment of the application provides a computer readable storage medium, on which a program is stored, and the program is applied to a display, and when the program is executed by a processor, the program realizes the brightness compensation method.
The embodiment of the application provides a brightness compensation method, a display and a computer storage medium, wherein the brightness compensation method is applied to the display, the display is provided with a detection device, and after a driving current is switched in, the display detects a light-emitting pixel through the detection device to obtain a real-time light parameter corresponding to the light-emitting pixel; judging whether Mura exists in the display or not according to the original parameters and the real-time light parameters corresponding to the luminous pixels; and if Mura exists, adjusting the driving current according to the real-time light parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the light transmitted by the luminous pixels through the configured detection device to obtain the corresponding real-time light parameters, and when Mura is determined to exist according to the real-time light parameters, the driving current is adjusted according to the real-time light parameters, so that the brightness of the display can be effectively compensated, the real-time compensation of the Mura is realized, and the display effect is improved.
Drawings
FIG. 1 is a first diagram illustrating the Mura phenomenon;
FIG. 2 is a diagram illustrating a Mura phenomenon II;
FIG. 3 is a schematic diagram of two light emission mechanisms of AMO L ED;
fig. 4 is a schematic flow chart illustrating an implementation of a luminance compensation method according to an embodiment of the present application;
FIG. 5 is a first schematic view illustrating a position of a detecting device according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a second exemplary embodiment of a position detection device;
fig. 7 is a first schematic structural diagram of a display according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a display according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.
O L ED, also known as organic electroluminescent display, organic light emitting semiconductor, because O L ED display technology has the advantages of self-luminescence, wide viewing angle, almost infinite contrast, low power consumption, very high response speed, etc., users are increasingly interested in O L ED panels.
The most efficient green emitting O L ED is reported to be made of Sano, with an efficiency of 15lm/W compared to green emitting O L ED, much less research has been done on red and blue emitting O L ED the most efficient blue emitting O L ED was developed by Idemitsu Hosokawa et al, with an emission efficiency of 5.0lm/W and a corresponding surface quantum efficiency of 2.4%, red emitting O L ED made of Alq doped with a cyanopyranyl dye with an emission efficiency of 2.5lm/W, which is measured at an emission intensity of about 100cd/m2 or less, while the actual applied O L is driven by a multichannel LED, which is driven by a high emission luminance, with a reduced emission luminance, such as a reduced emission luminance, increased emission luminance, reduced to 10000, increased emission luminance, increased to zero when the emission luminance is increased, increased to zero, and decreased emission luminance is reduced to zero when the emission luminance is increased, compared to zero, with No. 15 lm/W.
The time to fall from the initial luminance to half luminance was measured with the display device maintained at a constant current, the luminance reached 1000 hours at 2000cd/m2, the operating lifetime of the device was 1000 hours, the device obtained with doped rubrene had an initial luminance of 500cd/m2 and a half luminance lifetime of 3000 hours, the best metrics for comparing lifetimes were the product of luminance and half luminance lifetimes, the longest-lived device at this metric was 7000000cd/m2-hr for green light, 300000cd/m2-hr for blue light, 0000cd/m2-hr for red-orange light, the storage lifetime of a double-sealed O L ED device was about 5 years, the lifetime of the current O L ED had far exceeded 5000 hours, and a larger size O L ED panel had been produced, very bright in color, the fluorescent material was the highest in performance the material produced by japan luminescence, the red light efficiency reached 11cd/a, 16 ten thousand hours, the lifetime reached 30 ten thousand hours, the lifetime reached 30.0 cd 2 hours, the lifetime of blue light was 0.7.2 cd 2 hours, the highest luminous efficiency was found at 1000cd 2 hours, the blue light efficiency was found to be the blue light emission efficiency reached at 1000.2.2 h, the initial luminance was found to be the blue light emission lifetime of the blue light emission efficiency reached 11 a 2.7.7.7 h, the blue light emission efficiency, the blue emission efficiency was 0.7.7 h, the blue emission efficiency was found at 1000 h, the highest in the lifetime of the blue emission efficiency was found at 1000 h.
The O L ED display screen is formed by emitting light of three single primary colors of red, green and blue to form a pigment pixel, different pigments and different attenuation time, for example, due to the problems of raw materials of the blue pigment and the red pigment, the service life is short, the attenuation time is fast, so that after the O L ED display screen is used for a long time, under the condition of providing the same current, the green attenuation is slow, the light intensity is strong, and the red color is fast, namely, after the O L ED display screen is used for a long time, under the condition of the same current, the light intensities of different light-emitting pixels are different, so that the whole display screen is green, the Mura phenomenon is caused, and the use experience of a user is influenced.
Mura originally is Japanese, and as liquid crystal displays in Japan are widely used around the world, the word becomes a standard common in the display industry in the display world, and generally means that the brightness of the display is not uniform, so that various marks are caused. The criteria for Mura may be that there is no particularly noticeable brightness Mura visible under Gray127, while ensuring that the interface is not visible in normal use. FIG. 1 is a diagram illustrating a Mura phenomenon, as shown in FIG. 1, Mura may occur on the left, right, top, and bottom of a display screen; fig. 2 is a diagram illustrating a Mura phenomenon, which may occur vertically, in parallel, simultaneously at the left and right sides, and simultaneously at the top and bottom, as shown in fig. 2.
According to the different driving methods, O L ED can be classified into Passive O L ED (Passive Matrix, PMO L ED) and Active O L ED (Active Matrix, AMO L ED), wherein for AMO L ED driving method, top and bottom light emitting mechanisms can be specifically classified, fig. 3 is a schematic diagram of two light emitting mechanisms of AMO L ED, as shown in fig. 3, AMO L ED has a cathode layer, an organic light emitting layer and an anode strip, unlike PMO L ED, AMO L ED does not have a stripe-shaped anode and cathode, but an entire layer of anode and cathode, in the top light emitting structure, light is not shielded by the driving circuit, and has a higher aperture ratio than the bottom light emitting structure, thereby having a greater advantage in high resolution application, and gradually becoming the mainstream of AMO L ED.
The PMO L ED applies current to the selected cathode layer and anode strip through an external circuit to determine which pixels emit light and which do not emit light, while the AMO L ED adds a thin film transistor array between the cathode and the screen to determine whether the pixels are bright or dim.
For the AMO L ED driving mode, the display panel comprises a plurality of pixel structures, each pixel structure comprises a low-temperature polysilicon thin film transistor with a switching function and a charge storage capacitor, it is to be noted that the whole system of the driving circuit and the display array is integrated on the same glass substrate, wherein, besides the low-temperature polysilicon thin film transistor with the switching function, the O L ED driving circuit commonly used for the AMO L ED driving mode can also comprise a driving thin film transistor, and the structure is also called as a 2T1C structure.
The brightness compensation method provided by the embodiment of the application can improve Mura by feeding back the light brightness or the intensity value of red, green and blue RGB pixels based on an AMO L ED light emitting mechanism, on the principle that the Mura is formed by an O L ED display screen, the light brightness or the brightness of different light emitting pixels is detected, so that the real-time light parameters of different pixel points are determined, the size of driving current is adjusted, the brightness compensation of a display is realized, and the real-time compensation of the Mura is realized.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
An embodiment of the present application provides a brightness compensation method, and fig. 4 is a schematic implementation flow diagram of the brightness compensation method provided in the embodiment of the present application, as shown in fig. 4, in the embodiment of the present application, a method for performing brightness compensation on a display may include the following steps:
In the embodiment of the application, after the display is connected with the driving current, the light corresponding to the light-emitting pixels can be detected through the detection device, so that the real-time light parameters corresponding to the light-emitting pixels can be obtained.
It should be noted that in the embodiments of the present application, the display may be a display illuminated by three single primary colors of red, green and blue, such as an O L ED display screen.
Further, in embodiments of the present application, the display may be an O L ED display based on AMO L ED light emission mechanism, specifically, the display may include an anode layer, a cathode layer, and an organic light emitting layer, wherein the organic light emitting layer is disposed between the anode layer and the cathode layer, specifically, for an AMO L ED light emission mechanism, a thin film transistor array may be added between the cathode and the screen to determine whether the pixel is bright or not bright, wherein the AMO L ED light emission mechanism may include both a top emission mechanism and a bottom emission mechanism.
It should be noted that, in the embodiments of the present application, the anode layer is preferably, but not limited to, an ITO material, and the cathode layer is preferably, but not limited to, a metal material.
Further, in an embodiment of the present application, the display may further include a substrate, where the substrate may be a glass material, and the embodiment of the present application is not particularly limited.
Further, in the embodiments of the present application, a detection device may be configured in the display, wherein the detection device may be used for detecting the intensity or brightness of the light, for example, the detection device may be a light intensity detector, and may also be a brightness detector. That is, after the driving current is switched on, the detection device configured in the display may detect the light transmitted by the light-emitting pixels, and obtain real-time light parameters corresponding to the light-emitting pixels.
It should be noted that, in the implementation of the present application, just under the condition of the same current magnitude, the light intensities of different light-emitting pixels are different, so that the brightness of the display screen is not uniform, and a Mura phenomenon occurs, so that when performing brightness compensation, the display can detect the light intensity in addition to the light brightness.
It should be noted that, in the embodiments of the present application, the real-time light parameter corresponding to the light-emitting pixel may include real-time intensity or real-time brightness corresponding to the light-emitting pixel.
It should be noted that, in the embodiment of the present application, since the O L ED display based on the AMO L ED light emitting mechanism emits light by three single colors of RGB, that is, the light emitting pixels driven to emit light may be R pixels, G pixels, or B pixels.
It should be noted that in the embodiments of the present application, when the display is a top-emission mechanism, the display may be configured with the detection device at the cathode layer. Based on fig. 3 and fig. 5 are schematic position diagrams of a first detection device in the embodiment of the present application, as shown in fig. 5, for a top emission mechanism, a display may configure a detection device at a cathode layer, and perform brightness or intensity detection on light emitted by any one light-emitting pixel to obtain a real-time light parameter corresponding to the light-emitting pixel.
It should be noted that, in the embodiment of the present application, when the display is a bottom emission mechanism, the display may be configured with the detection device on the back plate. Based on fig. 3 and fig. 6 are schematic position diagrams of the detection device in the embodiment of the present application, as shown in fig. 6, for the top emission mechanism, the display may be configured with the detection device on the back plate, and when the light emitted by the light-emitting pixel is reflected by the back plate, the detection device may perform real-time detection on the light intensity or brightness to obtain the real-time light parameter corresponding to the light-emitting pixel.
It should be noted that, in the embodiment of the present application, since the light-emitting pixels may be R pixels, G pixels, or B pixels, and meanwhile, since the decay times corresponding to different pigments are different, the real-time light parameters obtained by the calculation of the display may be different for different light-emitting pixels.
And 102, judging whether the Mura exists in the display or not according to the original parameters and the real-time light parameters corresponding to the luminous pixels.
In the embodiment of the application, after the display performs light detection on the light-emitting pixels through the detection device to obtain the real-time light parameters corresponding to the light-emitting pixels, the display may further determine whether Mura exists in the display according to the original parameters and the real-time light parameters corresponding to the light-emitting pixels.
Further, in the implementation of the present application, the display may first obtain the original parameters corresponding to the light-emitting pixels.
It should be noted that, in the embodiments of the present application, the display may obtain the original parameters corresponding to the driving current and the light-emitting pixels according to the calculation of the accessed driving current. The original parameters can represent light parameters corresponding to light emitted by the light-emitting pixels under the condition of no loss at a certain driving current.
Further, in the implementation of the present application, for the same magnitude of driving current, the corresponding original parameters may be the same, but since the attenuation times corresponding to different pigments are different, the corresponding real-time light parameters may be different, and therefore, for different light-emitting pixels, the determination results obtained when the display performs Mura according to the original parameters and the implementation light parameters are different.
It should be noted that, in the embodiment of the present application, for the same light-emitting pixel, if the corresponding original parameter and the real-time light parameter are different, the display may consider that Mura exists, and therefore, further brightness compensation is required to implement the compensation for Mura.
And 103, if Mura is judged to exist, adjusting the driving current according to the real-time light parameters to perform brightness compensation.
In the embodiment of the application, after the display determines that Mura exists in the display according to the original parameters and the real-time light parameters corresponding to the light-emitting pixels, the display can adjust the driving current according to the real-time light parameters so as to perform brightness compensation.
It should be noted that, in the embodiment of the present application, when the display adjusts the driving current according to the real-time light parameter, the real-time light parameter may be compared with the original parameter corresponding to the light-emitting pixel, so that the driving current may be adjusted according to the comparison result.
Further, in the embodiment of the present application, after comparing the real-time light parameter with the original parameter corresponding to the light-emitting pixel, the display may determine a ratio between the real-time light parameter and the original parameter, and then further adjust the driving current according to the ratio.
Further, in the embodiment of the present application, after the display determines the real-time light parameter, the display may also directly adjust the driving current according to the real-time light parameter, so as to determine the adjusted driving current, and then directly access the adjusted driving current to perform brightness compensation.
It should be noted that, in the embodiment of the present application, when the display adjusts the driving current according to the real-time light parameters corresponding to the light-emitting pixels, since the corresponding real-time light parameters may be different for different light-emitting pixels, the adjustment degree of the driving current according to the real-time light parameters is different. The driving current of different degrees is adjusted in real time for different luminous pixels according to the real-time light parameters corresponding to the different luminous pixels, so that the brightness compensation for the display is realized, and the real-time compensation for Mura is further realized.
The application provides a brightness compensation method, which is applied to a display, wherein the display is provided with a detection device, and after a driving current is switched in, the display detects light-emitting pixels through the detection device to obtain real-time light parameters corresponding to the light-emitting pixels; judging whether Mura exists in the display or not according to the original parameters and the real-time light parameters corresponding to the luminous pixels; and if Mura exists, adjusting the driving current according to the real-time light parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the light transmitted by the luminous pixels through the configured detection device to obtain the corresponding real-time light parameters, and when Mura is determined to exist according to the real-time light parameters, the driving current is adjusted according to the real-time light parameters, so that the brightness of the display can be effectively compensated, the real-time compensation of the Mura is realized, and the display effect is improved.
Based on the foregoing embodiment, in another embodiment of the present application, a method for determining whether Mura exists in a display according to an original parameter and a real-time light parameter corresponding to a light-emitting pixel by the display may include the following steps:
and 102a, judging that Mura exists when the real-time light parameters are not equal to the original parameters.
In the embodiment of the present application, after the display detects and obtains the real-time light parameter corresponding to the light-emitting pixel, if the real-time light parameter is not equal to the original parameter corresponding to the light-emitting pixel, the display may determine that Mura exists.
It should be noted that, in the embodiment of the present application, after determining the original parameter and the real-time light parameter corresponding to the light-emitting pixel, the display may compare the original parameter and the real-time light parameter of the same light-emitting pixel, so as to further determine whether Mura exists according to the comparison result.
Further, in the embodiment of the present application, after the display compares the original parameter with the real-time light parameter, if the real-time light parameter is not equal to the original parameter, the display may consider that the intensity or brightness of the light emitted by the light-emitting pixels does not meet the standard intensity or brightness corresponding to the driving current, that is, the light-emitting pixels may have loss and attenuation, and the color presented is not consistent with the original image, so the display may determine that Mura exists.
And 102b, judging that Mura does not exist when the real-time light parameters are equal to the original parameters.
In the embodiment of the present application, after the display detects and obtains the real-time light parameters corresponding to the light-emitting pixels, if the real-time light parameters are equal to the original parameters corresponding to the light-emitting pixels, the display may determine that Mura does not exist.
Further, in the embodiment of the present application, after the display compares the original parameter with the real-time light parameter, if the real-time light parameter is equal to the original parameter, the display may consider that the intensity or brightness of the light emitted by the light-emitting pixels meets the standard intensity or brightness corresponding to the driving current, that is, the color presented is not consistent with the original image, and therefore, the display may determine that Mura does not exist.
It should be noted that, in the embodiment of the present application, since the O L ED display based on the AMO L ED light-emitting mechanism emits light through three single colors of RGB, that is, the light-emitting pixels may be R pixels, G pixels, or B pixels, and the real-time light parameters corresponding to different light-emitting pixels may be different because the decay times corresponding to different color elements are different.
In an embodiment of the present application, further, the method for adjusting the driving current according to the real-time light parameter for brightness compensation by the display may include the following steps:
step 201, adjusting the driving current according to the real-time light parameters to obtain the adjusted driving current.
In the embodiment of the application, after the display judges that Mura exists according to the original parameters and the real-time light parameters corresponding to the luminous pixels, the display adjusts the driving current according to the real-time light parameters to obtain the adjusted driving current.
It should be noted that, in the embodiment of the present application, the display may directly compare the real-time light parameter corresponding to the light-emitting pixel with the original parameter corresponding to the light-emitting pixel, and then may further adjust the driving current corresponding to the light-emitting pixel according to the comparison result.
Further, in the implementation of the present application, after comparing the real-time light parameter with the original parameter, if the real-time light parameter is smaller than the original parameter, the light-emitting pixel needs a larger driving current for driving, and therefore, the display can increase the driving current when performing current adjustment, thereby obtaining the adjusted driving current.
Step 202, the adjusted driving current is switched on to perform brightness compensation.
In the embodiment of the application, the display adjusts the driving current according to the real-time light parameters, and after the adjusted driving current is obtained, the adjusted driving current can be accessed, so that the brightness compensation can be performed.
Further, in the embodiment of the present application, since the real-time light parameters corresponding to different light-emitting pixels may be different, the adjusted driving currents corresponding to different light-emitting pixels may also be different.
It should be noted that, in the embodiment of the present application, since the brightness and the intensity of each light-emitting pixel are in direct proportion to the magnitude of the applied driving current, when the real-time light parameter of the light-emitting pixel is smaller than the original parameter, the real-time light parameter can be increased by increasing the driving current, so that the brightness compensation can be performed to achieve the effect of compensating for Mura.
In an embodiment of the present application, further, the method for adjusting the driving current according to the real-time light parameter for brightness compensation by the display may further include the following steps:
and step 203, determining the target current according to the original parameters and the real-time light parameters.
In the embodiment of the application, after the display judges that Mura exists according to the original parameters and the real-time light parameters corresponding to the luminous pixels, the current for performing brightness compensation, namely the target current, can be determined according to the original parameters and the real-time light parameters corresponding to the luminous pixels.
Further, in the embodiments of the present application, the display may compare the real-time light parameters corresponding to the light-emitting pixels with the original parameters corresponding to the light-emitting pixels, and then may further determine the target current according to the comparison result.
Further, in the embodiment of the present application, when the display determines the target current according to the original parameter and the real-time light parameter, the display may first determine the ratio value according to the original parameter and the real-time light parameter. Specifically, since there may be attenuation in the light-emitting pixels, the real-time light parameter does not satisfy the original parameter, the display may calculate the ratio of the real-time light parameter to the original parameter, i.e. the ratio value.
Further, in the embodiment of the present application, after the display calculates the proportional value, the display may continue to determine the target current for performing the brightness compensation according to the proportional value and the driving current.
It should be noted that, in the embodiment of the present application, the light-emitting pixels may be R pixels, G pixels, or B pixels, and meanwhile, since the decay times corresponding to different pigments are different, the real-time light parameters corresponding to different light-emitting pixels may be different, and accordingly, the target currents corresponding to different light-emitting pixels may also be different. For example, the real-time light parameter corresponding to a G pixel may be greater than the real-time light parameter corresponding to a B pixel, and therefore, the target current corresponding to the G pixel calculated by the display may be smaller than the target current corresponding to the B pixel based on the fact that the brightness and intensity of each light-emitting pixel are proportional to the magnitude of the applied driving current, i.e., the B pixel may need a larger driving current for brightness compensation.
And step 204, adjusting the driving current according to the target current so as to compensate the brightness.
In the embodiment of the application, after the display determines the target current according to the original parameters and the real-time light parameters, the display can adjust the driving current according to the target current, so that the brightness compensation can be performed.
It should be noted that, in the embodiment of the present application, after determining the target current of the light-emitting pixel, the display may control the driving circuit to adjust the driving current corresponding to the light-emitting pixel in real time according to the target current, so that the brightness compensation may be performed.
The application provides a brightness compensation method, which is applied to a display, wherein the display is provided with a detection device, and after a driving current is switched in, the display detects light-emitting pixels through the detection device to obtain real-time light parameters corresponding to the light-emitting pixels; judging whether Mura exists in the display or not according to the original parameters and the real-time light parameters corresponding to the luminous pixels; and if Mura exists, adjusting the driving current according to the real-time light parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the light transmitted by the luminous pixels through the configured detection device to obtain the corresponding real-time light parameters, and when Mura is determined to exist according to the real-time light parameters, the driving current is adjusted according to the real-time light parameters, so that the brightness of the display can be effectively compensated, the real-time compensation of the Mura is realized, and the display effect is improved.
Based on the foregoing embodiments, in another embodiment of the present application, fig. 7 is a schematic view of a composition structure of a display provided in the embodiments of the present application, and as shown in fig. 7, the display 1 provided in the embodiments of the present application may include a detecting unit 11, a determining unit 12, and an adjusting unit 13.
The detection unit 11 is configured to detect the light-emitting pixel through the detection device after the driving current is switched in, so as to obtain a real-time light parameter corresponding to the light-emitting pixel.
The judging unit 12 is configured to judge whether Mura exists in the display according to the original parameter corresponding to the light-emitting pixel and the real-time light parameter.
And the adjusting unit 13 is configured to adjust the driving current according to the real-time light parameter if it is determined that the Mura exists, so as to perform the brightness compensation.
Further, in the practice of the present application, the real-time light parameter includes real-time intensity or real-time brightness.
Further, in the practice of the present application, when the display is a top-emitting mechanism, the cathode layer of the display configures the detection device.
Further, in the implementation of the present application, when the display is a bottom emission mechanism, the back plate of the display configures the detecting device.
Further, in an implementation of the present application, the determining unit 12 is specifically configured to determine that the Mura exists when the real-time light parameter is not equal to the original parameter; and when the real-time light parameters are equal to the original parameters, judging that the Mura does not exist.
Further, in an implementation of the present application, the adjusting unit 13 is specifically configured to adjust the driving current according to the real-time light parameter, so as to obtain an adjusted driving current; and switching in the adjusted driving current to perform the brightness compensation.
Further, in the implementation of the present application, the adjusting unit 13 determines a target current specifically according to the original parameter and the real-time light parameter; and adjusting the driving current according to the target current to perform the brightness compensation.
Further, in an implementation of the present application, the adjusting unit 13 is specifically configured to determine a ratio value according to the original parameter and the real-time light parameter; and determining the target current according to the proportional value and the driving current.
Fig. 8 is a schematic diagram of a second composition structure of the display device according to the embodiment of the present disclosure, as shown in fig. 8, the display device 1 according to the embodiment of the present disclosure may further include a processor 14, a memory 15 storing an executable instruction of the processor 14, a cathode layer 16, an organic light emitting layer 17, and an anode strip 18, and further, the display device 1 may further include a communication interface 19, and a bus 110 for connecting the processor 14, the memory 15, the cathode layer 16, the organic light emitting layer 17, the anode strip 18, and the communication interface 19.
In an embodiment of the present application, the Processor 14 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a ProgRAMmable logic Device (P L D), a Field ProgRAMmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor, it is understood that the electronic devices for implementing the Processor function may be other devices, and the present application embodiment is not particularly limited thereto, the display 1 may further include a memory 15, and the memory 15 may be connected to the Processor 14, wherein the memory 15 is used for storing executable program code, and the program code includes computer operation instructions, and the memory 15 may include a high speed memory, and may further include at least two non-volatile memories, such as a non-volatile memory, and a non-volatile memory, such as at least two RAM.
In the embodiment of the present application, the bus 110 is used to connect the communication interface 19, the processor 14, and the memory 15 and the intercommunication among these devices.
In an embodiment of the present application, the memory 15 is used for storing instructions and data.
Further, in the embodiment of the present application, the processor 14 is configured to, after the driving current is switched in, detect the light-emitting pixel through the detection device, and obtain a real-time light parameter corresponding to the light-emitting pixel; judging whether Mura exists in the display or not according to the original parameters corresponding to the luminous pixels and the real-time light parameters; and if the Mura exists, adjusting the driving current according to the real-time light parameters to perform the brightness compensation.
In practical applications, the Memory 15 may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only first Memory (ROM), a flash Memory (flash Memory), a Hard disk (Hard disk Drive, HDD) or a Solid-State Drive (SSD); or a combination of the above types of memories and provides instructions and data to processor 14.
In addition, each functional module in this embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.
Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
According to the display provided by the embodiment of the application, the display is provided with the detection device, after the display is connected with the driving current, the detection device is used for detecting the luminous pixels, and the real-time light parameters corresponding to the luminous pixels are obtained; judging whether Mura exists in the display or not according to the original parameters and the real-time light parameters corresponding to the luminous pixels; and if Mura exists, adjusting the driving current according to the real-time light parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the light transmitted by the luminous pixels through the configured detection device to obtain the corresponding real-time light parameters, and when Mura is determined to exist according to the real-time light parameters, the driving current is adjusted according to the real-time light parameters, so that the brightness of the display can be effectively compensated, the real-time compensation of the Mura is realized, and the display effect is improved.
An embodiment of the present application provides a computer-readable storage medium, on which a program is stored, which when executed by a processor implements the brightness compensation method as described above.
Specifically, the program instructions corresponding to an illumination compensation method in the present embodiment may be stored on a storage medium such as an optical disc, a hard disc, a usb disk, etc., and when the program instructions corresponding to an illumination compensation method in the storage medium are read or executed by an electronic device, the method includes the following steps:
after the driving current is switched in, detecting the luminous pixel through the detection device to obtain a real-time light parameter corresponding to the luminous pixel;
judging whether Mura exists in the display or not according to the original parameters corresponding to the luminous pixels and the real-time light parameters;
and if the Mura exists, adjusting the driving current according to the real-time light parameters to perform the brightness compensation.
It will be apparent to those skilled in the art that embodiments of the present application may be provided as a method, display, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks in the flowchart and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.
Claims (16)
1. A brightness compensation method is applied to a display, the display is provided with a detection device, and the method comprises the following steps:
after the driving current is switched in, detecting the luminous pixel through the detection device to obtain a real-time light parameter corresponding to the luminous pixel;
judging whether Mura exists in the display or not according to the original parameters corresponding to the luminous pixels and the real-time light parameters;
if the Mura exists, adjusting the driving current according to the real-time light parameters to perform the brightness compensation;
wherein the real-time light parameters include real-time intensity or real-time brightness.
2. The method of claim 1, wherein a cathode layer of the display configures the detection device when the display is a top-emitting mechanism.
3. The method of claim 1, wherein a back plate of the display configures the detection device when the display is a bottom emission mechanism.
4. The method of claim 1, wherein said determining whether Mura is present in the display based on the original parameters corresponding to the pixels and the real-time lighting parameters comprises:
when the real-time light parameters are not equal to the original parameters, judging that the Mura exists;
and when the real-time light parameters are equal to the original parameters, judging that the Mura does not exist.
5. The method of claim 1, wherein said adjusting said drive current in accordance with said real-time light parameters for said brightness compensation comprises:
adjusting the driving current according to the real-time light parameters to obtain the adjusted driving current;
and switching in the adjusted driving current to perform the brightness compensation.
6. The method of claim 1, wherein said adjusting said drive current in accordance with said real-time light parameters for said brightness compensation comprises:
determining a target current according to the original parameters and the real-time light parameters;
and adjusting the driving current according to the target current so as to perform the brightness compensation.
7. The method of claim 6, wherein determining a target current based on the raw parameters and the real-time light parameters comprises:
determining a proportional value according to the original parameters and the real-time light parameters;
and determining the target current according to the proportional value and the driving current.
8. A display, wherein the display is configured with a detection device, the display comprising: a detection unit, a judgment unit and an adjustment unit,
the detection unit is used for detecting the luminous pixel through the detection device after the driving current is switched in to obtain a real-time light parameter corresponding to the luminous pixel;
the judging unit is used for judging whether Mura exists in the display or not according to the original parameters corresponding to the luminous pixels and the real-time light parameters;
the adjusting unit is used for adjusting the driving current according to the real-time light parameters to perform the brightness compensation if the Mura is judged to exist;
wherein the real-time light parameters include real-time intensity or real-time brightness.
9. The display of claim 8, wherein a cathode layer of the display configures the detection device when the display is a top-emitting mechanism.
10. The display of claim 9, wherein the back plate of the display configures the detection device when the display is a bottom emission mechanism.
11. The display of claim 8,
the judging unit is specifically configured to judge that the Mura exists when the real-time light parameter is not equal to the original parameter; and when the real-time light parameters are equal to the original parameters, judging that the Mura does not exist.
12. The display of claim 8,
the adjusting unit is specifically configured to adjust the driving current according to the real-time light parameter to obtain an adjusted driving current; and switching in the adjusted driving current to perform the brightness compensation.
13. The display of claim 12,
the adjusting unit is used for determining a target current according to the original parameters and the real-time light parameters; and adjusting the driving current according to the target current to perform the brightness compensation.
14. The display of claim 13,
the adjusting unit is specifically used for determining a proportional value according to the original parameter and the real-time light parameter; and determining the target current according to the proportional value and the driving current.
15. A display comprising a processor, a memory having stored thereon instructions executable by the processor, a cathode layer, an organic light emitting layer and an anode strip, wherein the display is configured with detection means, which when executed by the processor, implement the method according to any one of claims 1-7.
16. A computer-readable storage medium, on which a program is stored, for application in a display, characterized in that the program, when executed by a processor, implements the method according to any one of claims 1-7.
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