CN109671392B - Brightness compensation method, display and computer storage medium - Google Patents
Brightness compensation method, display and computer storage medium Download PDFInfo
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- CN109671392B CN109671392B CN201910145545.4A CN201910145545A CN109671392B CN 109671392 B CN109671392 B CN 109671392B CN 201910145545 A CN201910145545 A CN 201910145545A CN 109671392 B CN109671392 B CN 109671392B
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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]
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- G—PHYSICS
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- 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
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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, a pixel back polar plate of the display is provided with a hole, a substrate of 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 reflected light corresponding to the light-emitting pixel through a detection device to obtain the reflected light parameter corresponding to the reflected light; obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters and the reflected light parameters corresponding to the holes; and adjusting the driving current according to the real-time 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; for a manufactured display with shaped physical characteristics, the prior art mainly corrects the brightness of a pixel point in a mode of performing brightness compensation on a display image, so as to improve the Mura phenomenon. However, for an Organic Light-Emitting Diode (OLED) display panel Emitting Light through three primary colors of red, green and blue, an effective compensation method for the Mura phenomenon, i.e., the phenomenon of non-uniform brightness, caused by different attenuation times of different pigments is not available.
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 a pixel back electrode plate of the display is provided with a hole, a substrate of the display is provided with a detection device, and the method comprises the following steps:
after the driving current is switched in, detecting the reflected light corresponding to the light-emitting pixel through the detection device to obtain the reflected light parameter corresponding to the reflected light;
obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters corresponding to the holes and the reflected light parameters;
and adjusting the driving current according to the real-time parameters to perform the brightness compensation.
In the above scheme, the light emitting pixels transmit light through the holes.
In the above scheme, the reflected light parameter includes light intensity or light brightness; accordingly, the number of the first and second electrodes,
the real-time parameter includes a real-time intensity or a real-time brightness.
In the above scheme, the obtaining a real-time parameter corresponding to the light-emitting pixel according to the size parameter corresponding to the hole and the reflected light parameter includes:
determining a first proportional value according to the size parameter corresponding to the hole and the light transmission parameter corresponding to the light-emitting pixel;
and determining the real-time parameter according to the first proportion value and the reflected light parameter.
In the foregoing solution, the adjusting the driving current according to the real-time parameter to perform the brightness compensation includes:
sending a regulation request; wherein the adjustment request carries the real-time parameters;
receiving an adjustment response corresponding to the adjustment request; wherein the regulation response carries a regulated drive current;
and switching in the adjusted driving current to perform the brightness compensation.
In the foregoing solution, the adjusting the driving current according to the real-time parameter to perform the brightness compensation includes:
acquiring original parameters corresponding to the luminous pixels;
determining a target current according to the original parameters and the real-time parameters;
and sending the target current to realize the adjustment of the driving current so as to perform the brightness compensation.
In the above scheme, the determining a target current according to the original parameter and the real-time parameter includes:
determining a second proportional value according to the original parameter and the real-time parameter;
and determining the target current according to the second proportional value and the driving current.
In the above solution, the light emitting pixel transmits light through the hole, including:
the light emitting pixels transmit the reflected light to the substrate through the holes;
the substrate receives the reflected light by the detection device.
The embodiment of the application provides a display, the pixel back polar plate of display is provided with the hole, the base plate of display disposes detection device, the display includes: a detection unit, an acquisition unit and an adjustment unit,
the detection unit is used for detecting the reflected light corresponding to the light-emitting pixels through the detection device after the driving current is switched in, and obtaining the reflected light parameters corresponding to the reflected light;
the acquisition unit is used for acquiring real-time parameters corresponding to the light-emitting pixels according to the size parameters corresponding to the holes and the reflected light parameters;
and the adjusting unit is used for adjusting the driving current according to the real-time parameters so as to perform the brightness compensation.
In the above scheme, the light emitting pixels transmit light through the holes.
In the above scheme, the reflected light parameter includes light intensity or light brightness; accordingly, the number of the first and second electrodes,
the real-time parameter includes a real-time intensity or a real-time brightness.
In the above scheme, the obtaining unit is specifically configured to determine a first proportional value according to a size parameter corresponding to the hole and a light transmission parameter corresponding to the light-emitting pixel; and determining the real-time parameter according to the first proportional value and the reflected light parameter.
In the above scheme, the adjusting unit is specifically configured to send an adjusting request; wherein the adjustment request carries the real-time parameters; receiving an adjustment response corresponding to the adjustment request; wherein the regulation response carries a regulated drive current; and switching in the adjusted driving current to perform the brightness compensation.
In the above scheme, the adjusting unit is specifically configured to obtain an original parameter corresponding to the light-emitting pixel; determining a target current according to the original parameters and the real-time parameters; and sending the target current to realize the adjustment of the driving current so as to perform the brightness compensation.
In the above scheme, the adjusting unit is specifically configured to determine a second proportional value according to the original parameter and the real-time parameter; and determining the target current according to the second proportional value and the driving current.
In the above aspect, the light-emitting pixel transmits the reflected light to the substrate through the hole; the substrate receives the reflected light by the detection device.
The embodiment of the application provides a display, which comprises a processor, a memory storing the executable instructions of the processor, a cathode belt, an organic light-emitting layer and an anode belt, wherein the pixel back electrode plate of the display is provided with a hole, the substrate of the display is provided with a detection device, and when the instructions are executed by the processor, the brightness compensation method is realized.
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, a pixel back electrode plate of the display is provided with a hole, a substrate of the display is provided with a detection device, and after a driving current is switched in, the display detects reflected light corresponding to a luminous pixel through the detection device to obtain a reflected light parameter corresponding to the reflected light; obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters and the reflected light parameters corresponding to the holes; and adjusting the driving current according to the real-time parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the reflected light transmitted by the light-emitting pixels through the holes of the pixel back electrode plate through the detection device arranged on the substrate to obtain the corresponding reflected light parameters, and further determine the real-time parameters corresponding to the light-emitting pixels by combining the size parameters of the holes, so that the driving current can be adjusted according to the real-time parameters, the brightness of the display can be effectively compensated, the real-time compensation of 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 flow chart illustrating an implementation of a luminance compensation method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a display according to an embodiment of the present application;
fig. 5 is a first schematic structural diagram of a display according to an embodiment of the present disclosure;
fig. 6 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.
OLEDs are also known as organic electroluminescent displays, organic light emitting semiconductors. Since the OLED display technology has the advantages of self-luminescence, wide viewing angle, almost infinite contrast, low power consumption, extremely high response speed, and the like, users increasingly enjoy the OLED display.
Green emitting OLEDs are the most efficient devices because the human eye is most sensitive to green light. The device with coumarin doped with Alq has the efficiency of 5-6 lm/W. The literature reports that the most efficient green-emitting OLED is made from Sano, with an efficiency of 15 lm/W. Much less research has been done on red and blue emitting OLEDs than on green emitting OLEDs. The most efficient blue-emitting OLED was developed by Hosokawa et al, Idemitsu, and had a luminous efficiency of 5.0lm/W, corresponding to a surface quantum efficiency of 2.4%. The pyran nitrile dye is blended into Alq to prepare the OLED device with red light, and the luminous efficiency of the OLED device is 2.5 lm/W. The luminous efficiencies were measured under the conditions that the luminous intensity was about 100cd/m2 or less. The practical OLED is driven by multiple paths, and the maximum luminous intensity is higher. Therefore, the display pixels may be driven to a high light emission intensity, resulting in a decrease in light emission efficiency. That is, as the light emission luminance increases, the light emission efficiency decreases due to an increase in the driving voltage. The green-emitting OLED has a luminous efficiency of 2lm/W and only 30% at low luminance at a luminous luminance of 10000cd/m 2. The luminous efficiency of the red-and blue-emitting OLEDs decreases more with increasing luminous brightness.
The time from the initial luminance to half luminance was measured under the condition that the display device maintained a constant current. At a luminance of 2000cd/m2, the operating lifetime of the device reached 1000 hours. The rubrene-doped device had an initial luminance of 500cd/m2 and a half-luminance lifetime of 3000 hours. The optimum magnitude for comparing lifetimes is the product of luminance and half-luminance lifetime. The longest lifetime device at this level is 7000000cd/m2-hr for green light, 300000cd/m2-hr for blue light, and 1600000cd/m2-hr for red-orange. The shelf life of a double sealed OLED device is about 5 years. The lifetime of today's OLEDs has been far beyond 5000 hours and larger sized OLED panels have been produced with very bright colors. In the aspect of fluorescent materials, the highest performance is the material produced by the dawn of Japan. The red light efficiency reaches 11cd/A, and the service life reaches 16 ten thousand hours; the green light efficiency reaches 30cd/A, and the service life is 6 ten thousand hours; the high efficiency, long lifetime blue material BD-2(0.13, 0.22) under development, had an efficiency of 8.7cd/A and a lifetime of 2.3 ten thousand hours. In the aspect of phosphorescent materials, the chromaticity coordinate of red light materials is (0.67, 0.33), the efficiency reaches 15cd/A, and the working life of the red light materials exceeds 15 ten thousand hours under the condition of 500cd/m ^ 2; the green light material has the color coordinate of (0.34, 0.61), the efficiency reaches 65cd/A, the initial brightness is 1000cd/m ^2, and the service life exceeds 4 ten thousand hours; the most difficult blue phosphor materials have efficiencies of up to 30cd/A and lifetimes of up to 10 ten thousand hours at initial luminance of 200cd/m ^ 2.
The OLED display screen is formed by emitting red, green and blue single primary colors 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 is fast, and the green attenuation is slow and the light intensity is strong under the condition of providing the same current after the OLED display screen is used for a long time; and second red, blue decays most rapidly. That is to say, after using the OLED display screen for a long time, under the same electric current size condition, the light intensity of different light-emitting pixel is different, leads to the whole green of display screen, appears the phenomenon of Mura, influences user and uses the experience.
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.
OLEDs can be classified into Passive OLEDs (PMOLEDs) and Active OLEDs (AMOLEDs) according to driving methods. In the PMOLED driving method, the PMOLED includes a cathode band, an organic light emitting layer, and an anode band. The anode strip and the cathode strip are perpendicular to each other. The intersection of the cathode and anode forms a pixel, i.e. a site where light is emitted. An external circuit applies current to the selected cathode and anode strips to determine which pixels are to emit light and which are not. Wherein the brightness and intensity of each pixel is proportional to the magnitude of the applied current.
The brightness compensation method provided by the embodiment of the application can feed back red, green and blue RGB values to improve Mura based on a PMOLED (passive matrix organic light emitting diode) light-emitting mechanism, and can detect the light intensity or brightness of different light-emitting pixels according to the principle that the Mura is formed by an OLED display screen so as to determine the real-time parameters of different pixel points, adjust and determine the current, compensate the brightness of a display and further compensate the Mura in real time. Specifically, the display can transmit partial light to the substrate through the hole of the pixel back electrode plate, then the detection device configured by the substrate detects the light intensity or the brightness, so that the real-time parameters corresponding to the light-emitting pixels can be further determined, the current can be determined to be regulated according to the real-time parameters, the color of each pigment is kept consistent with the original image when the image is presented, and then the Mura can be compensated in real time, so that the brightness compensation of the display 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. 3 is a schematic implementation flow diagram of the brightness compensation method provided in the embodiment of the present application, as shown in fig. 3, 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 switched on with the driving current, the detection device can detect the reflected light corresponding to the light-emitting pixels, so that the reflected light parameters corresponding to the reflected light can be obtained.
It should be noted that, in the embodiments of the present application, the display may be a display driven by an external driving circuit, and specifically, in the embodiments of the present application, the display may be a display emitting light by three single primary colors of red, green and blue, such as an OLED display screen.
Further, in embodiments of the present application, the display may be an OLED display based on a PMOLED light emitting mechanism. In particular, 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. The anode layer may include a plurality of anodes parallel to each other, the cathode layer may include a plurality of cathodes parallel to each other, the anodes and the cathodes may be perpendicular to each other, the intersection points of the anodes and the cathodes are provided with light emitting units to form pixels, that is, light emitting portions, and the display may apply current to the selected cathodes and anodes through an external circuit, so as to drive the corresponding pixels to emit light, thereby obtaining light emitting pixels.
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 the embodiments of the present application, the display may further include a substrate, wherein the substrate may be a glass or a metal material, and the embodiments of the present application are not particularly limited.
In the implementation of the present application, the display is driven by an external circuit connected thereto, and after a driving current is connected thereto by the external circuit, a current is applied to a cathode and an anode selected in the display, so that a pixel corresponding to a cross point of the cathode and the anode is driven to emit light, thereby obtaining a light-emitting pixel.
Further, in the embodiments of the present application, a hole may be disposed in the pixel back plate in the display, wherein the hole in the pixel back substrate may be a hole with any shape, and the embodiments of the present application are not particularly limited. After the display is switched on, the driven luminous pixels, i.e. the luminous pixels, can transmit light through the holes.
It should be noted that, in the embodiments of the present application, after the light-emitting pixels in the display transmit light through the holes disposed in the pixel back plate, the substrate may receive part of the light transmitted by the light-emitting pixels.
Further, in the embodiments of the present application, the substrate in the display may be configured with a detection device, 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 or a brightness detector. That is, when the substrate obtains the light transmitted by the light-emitting pixel through the hole in the pixel back plate, the reflected light can be received by the configured detection device, so that the intensity detection or brightness of the reflected light corresponding to the light-emitting pixel can be further performed.
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.
Further, in the implementation of the present application, the detection device in the display may obtain the reflected light parameter corresponding to the reflected light after detecting the intensity or brightness of the reflected light. The real-time reflected light parameter may be used to characterize brightness or intensity of real-time reflected light, that is, the reflected light parameter may be light intensity or light brightness.
It should be noted that, in the embodiment of the present application, the reflected light corresponding to the light-emitting pixel is not all the transmission light corresponding to the light-emitting pixel, and therefore the reflected light parameter corresponding to the reflected light cannot represent the real-time parameter corresponding to the light-emitting pixel.
It should be noted that, in the embodiment of the present application, since the OLED display based on the PMOLED 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.
And 102, obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters and the reflected light parameters corresponding to the holes.
In the embodiment of the application, after the display detects the reflected light corresponding to the light-emitting pixel through the detection device and obtains the reflected light parameter corresponding to the reflected light, the display may further calculate and obtain the real-time parameter corresponding to the light-emitting pixel according to the size parameter and the reflected light parameter corresponding to the hole. The real-time parameter may include a real-time intensity or a real-time brightness corresponding to the light-emitting pixel.
It should be noted that, in the embodiment of the present application, since the reflected light parameter corresponding to the reflected light cannot represent the real-time parameter corresponding to the light-emitting pixel, after the reflected light parameter is determined, the display may continue to calculate the real-time parameter corresponding to the light-emitting pixel according to the reflected light parameter.
Further, in the practice of the present application, the display may calculate the real-time parameters based on the size of the aperture provided on the pixel backside substrate. Specifically, the display may determine a size parameter corresponding to the hole, and further determine that the reflected light parameter detected by the detection device corresponds to the proportion of the transmitted light of the light-emitting pixel on the basis of the hole of the size parameter, so as to further determine a real-time 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 parameters obtained by the calculation of the display may be different for different light-emitting pixels.
And 103, adjusting the driving current according to the real-time parameters to perform brightness compensation.
In the embodiment of the present application, after the display obtains the real-time parameter corresponding to the light-emitting pixel according to the size parameter and the reflected light parameter corresponding to the aperture, the display may adjust the driving current according to the real-time parameter to perform the 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 parameter, the real-time 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 embodiments of the present application, after comparing the real-time parameter with the original parameter corresponding to the light-emitting pixel, the display may determine a ratio between the real-time 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 determining the real-time parameter, the display may also directly send the real-time parameter to an external circuit for driving, so as to control the external circuit to adjust the driving current.
It should be noted that, in the embodiment of the present application, when the display adjusts the driving current according to the real-time parameter corresponding to the light-emitting pixel, since the corresponding real-time parameters may be different for different light-emitting pixels, the adjustment degree of the driving current according to the real-time parameter is different. The driving current of different luminous pixels can be adjusted in real time to different degrees according to the real-time parameters corresponding to the different luminous pixels, so that the brightness compensation of the display can be realized, and the real-time compensation of Mura can be realized.
Fig. 4 is a schematic diagram of a display according to an embodiment of the present disclosure, and as shown in fig. 4, the OLED display based on the PMOLED light emitting mechanism may include an anode strip, a cathode strip, and an organic light emitting layer. Wherein the anode layer may include a plurality of anodes parallel to each other, and the cathode layer may include a plurality of cathodes parallel to each other, the anodes and cathodes being perpendicular to each other. After the display is connected with a driving current through an external circuit, current is applied to a selected cathode and an anode in the display, so that a pixel corresponding to the intersection of the cathode and the anode is driven to emit light. Since the OLED display based on the PMOLED light emitting mechanism emits light by three single colors of RGB, that is, light emitting pixels driven to emit light may be R pixels, G pixels, or B pixels. The display may also comprise a substrate of glass or metal material. The pixel back plate in the display may have a hole, where the hole in the pixel back substrate may be a hole of any shape, and the embodiment of the present application is not particularly limited. The substrate in the display may be provided with detection means, wherein the detection means may be used for detection of the intensity or brightness of the light. Therefore, the display reflects part of light of the luminous pixels to the substrate through the holes of the pixel back electrode plate, the detection device configured on the substrate detects the reflected light, the real-time parameters of the luminous pixels are determined by combining the size proportion of the holes, and then the driving current can be adjusted by feeding back the real-time parameters, so that the color of the pixels when the picture is displayed is kept consistent with that of the original image.
The application provides a brightness compensation method, which is applied to a display, wherein a pixel back electrode plate of the display is provided with a hole, a substrate of the display is provided with a detection device, and after a driving current is switched in the display, reflected light corresponding to a light-emitting pixel is detected by the detection device to obtain a reflected light parameter corresponding to the reflected light; obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters and the reflected light parameters corresponding to the holes; and adjusting the driving current according to the real-time parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the reflected light transmitted by the light-emitting pixels through the holes of the pixel back electrode plate through the detection device arranged on the substrate to obtain the corresponding reflected light parameters, and further determine the real-time parameters corresponding to the light-emitting pixels by combining the size parameters of the holes, so that the driving current can be adjusted according to the real-time parameters, the brightness of the display can be effectively compensated, the real-time compensation of Mura is realized, and the display effect is improved.
Based on the foregoing embodiment, in another embodiment of the present application, a method for obtaining real-time parameters corresponding to the light-emitting pixels by a display according to a size parameter corresponding to the aperture and the reflected light parameter may include the following steps:
step 102a, determining a first proportional value according to the size parameter corresponding to the hole and the light transmission parameter corresponding to the light-emitting pixel.
In the embodiment of the application, after the display detects and obtains the reflected light parameter of the reflected light, a ratio between the size parameter corresponding to the hole corresponding to the light-emitting pixel and the light transmission parameter corresponding to the light-emitting pixel, that is, a first ratio, may be determined.
It should be noted that, in the embodiments of the present application, the light transmission parameter corresponding to the light-emitting pixel is used to characterize the reflection light parameter of all the transmitted light corresponding to the light-emitting pixel. For example, the light transmission parameter may be the transmission area of a light emitting pixel on the back plate of the pixel.
Further, in the embodiment of the present application, the display may store the size of the hole disposed on the back plate of the pixel, that is, the size parameter in advance, and then calculate the ratio of the size parameter to the light transmission parameter, that is, the first ratio value, so that the calculation of the real-time parameter may be further performed according to the first ratio value.
And step 102b, determining a real-time parameter according to the first proportional value and the reflected light parameter.
In the embodiment of the application, after the display determines the first proportional value according to the size parameter corresponding to the hole and the light transmission parameter corresponding to the light-emitting pixel, the display may continue to determine the real-time parameter corresponding to the light-emitting pixel according to the first proportional value and the reflected light parameter.
Further, in the embodiment of the present application, since the reflected light transmitted to the substrate through the hole is not all the transmitted light corresponding to the light-emitting pixel, after the first ratio value between the size parameter corresponding to the small hole and the light transmission parameter corresponding to the light-emitting pixel is determined, the real-time parameter of all the transmitted light corresponding to the light-emitting pixel can be calculated and obtained further through the first ratio value and the reflected light parameter corresponding to the reflected light.
It should be noted that, in the embodiment of the present application, since the OLED display based on the PMOLED light-emitting mechanism emits light through three RGB single colors, that is, 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 parameters corresponding to different light-emitting pixels may be different. For example, a real-time parameter for a G pixel may be greater than a real-time parameter for an R pixel.
In an embodiment of the present application, further, the method for adjusting the driving current by the display according to the real-time parameter to perform brightness compensation may include the following steps:
step 103a, sending an adjustment request; wherein the adjustment request carries real-time parameters.
In the embodiment of the application, after the display calculates and obtains the real-time parameter corresponding to the light-emitting pixel according to the first proportional value and the light intensity parameter corresponding to the reflected light, the display may send an adjustment request carrying the real-time parameter.
It should be noted that, in the embodiment of the present application, the display performs driving display through the external circuit, and therefore, after determining the real-time parameter of the light-emitting pixel, the display may send an adjustment request to the external circuit, so that the external circuit may perform real-time adjustment on the driving current corresponding to the light-emitting pixel according to the real-time parameter carried in the adjustment request.
Further, in the embodiment of the present application, after receiving the adjustment request, the external circuit may compare the real-time parameter corresponding to the light-emitting pixel carried in the adjustment request 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.
Step 103b, receiving an adjustment response corresponding to the adjustment request; wherein the adjustment response carries the adjusted drive current.
In the embodiment of the application, after the display sends the adjustment request carrying the real-time parameters, the display may receive an adjustment response corresponding to the adjustment request.
It should be noted that, in the embodiment of the present application, after the external circuit adjusts the driving current, the external circuit may send an adjustment response carrying the adjusted driving current to the display.
Further, in the embodiment of the present application, since the real-time parameters corresponding to different light-emitting pixels may be different, the adjusted driving currents corresponding to different light-emitting pixels may also be different.
And step 103c, accessing the adjusted driving current to perform brightness compensation.
In an embodiment of the application, the display receives an adjustment response carrying the adjusted drive current; the adjusted drive current can then be switched in, so that brightness compensation can be carried out.
Further, 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 parameter of the light emitting pixel is smaller than the original parameter, the real-time parameter can be increased by increasing the driving current, so as to implement the brightness compensation of the display, and further implement the real-time compensation of Mura.
In an embodiment of the present application, further, the method for adjusting the driving current by the display according to the real-time parameter to perform the brightness compensation may further include the following steps:
and step 103d, acquiring original parameters corresponding to the light-emitting pixels.
In the embodiment of the application, after the display calculates and obtains the real-time parameter corresponding to the light-emitting pixel according to the first proportional value and the light intensity parameter corresponding to the reflected light, the display may first obtain the original parameter corresponding to the light-emitting pixel.
In the embodiment of the present application, when the display is driven and displayed by an external circuit, the original parameter corresponding to the light-emitting pixel corresponding to the driving current can be obtained by calculation according to the accessed driving current.
And 103e, determining the target current according to the original parameters and the real-time parameters.
In the embodiment of the application, after the display acquires the original parameters corresponding to the light-emitting pixels, the current for performing brightness compensation, that is, the target current, can be determined according to the original parameters and the real-time parameters corresponding to the light-emitting pixels.
Further, in the embodiments of the present application, the display may compare the real-time parameter corresponding to the light-emitting pixel with the original parameter corresponding to the light-emitting pixel, 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 parameter, the display may first determine the second ratio value according to the original parameter and the real-time parameter. In particular, since there may be attenuation in the light-emitting pixels, which results in the real-time parameter not satisfying the original parameter, the display may calculate the ratio of the real-time parameter to the original parameter, i.e. the second ratio value.
Further, in the embodiment of the present application, after the display calculates the second ratio value, the display may continue to determine the target current for performing the brightness compensation according to the second ratio 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 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 parameter corresponding to a G pixel may be greater than the real-time 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 on the basis 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 to implement brightness compensation.
And 103f, sending the target current to realize the adjustment of the driving current so as to perform brightness compensation.
In the embodiment of the application, after the display determines the target current according to the original parameter and the real-time parameter, the target current can be sent to an external circuit, so that the adjustment of the driving current can be realized, and further, the brightness compensation can be performed.
It should be noted that, in the embodiment of the present application, the display performs driving display through the external circuit, and therefore, after determining the target current of the light-emitting pixel, the display may send the target current to the external circuit, so that the external circuit may perform real-time adjustment on the driving current corresponding to the light-emitting pixel according to the target current, thereby achieving brightness compensation.
The application provides a brightness compensation method, which is applied to a display, wherein a pixel back electrode plate of the display is provided with a hole, a substrate of the display is provided with a detection device, and after a driving current is switched in the display, reflected light corresponding to a light-emitting pixel is detected by the detection device to obtain a reflected light parameter corresponding to the reflected light; obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters and the reflected light parameters corresponding to the holes; and adjusting the driving current according to the real-time parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the reflected light transmitted by the light-emitting pixels through the holes of the pixel back electrode plate through the detection device arranged on the substrate to obtain the corresponding reflected light parameters, and further determine the real-time parameters corresponding to the light-emitting pixels by combining the size parameters of the holes, so that the driving current can be adjusted according to the real-time parameters, the brightness of the display can be effectively compensated, the real-time compensation of Mura is realized, and the display effect is improved.
Based on the foregoing embodiments, in another embodiment of the present application, fig. 5 is a schematic view of a composition structure of a display provided in the embodiments of the present application, and as shown in fig. 5, the display 1 provided in the embodiments of the present application may include a detecting unit 11, an obtaining unit 12, and an adjusting unit 13.
The detection unit 11 is configured to detect, by the detection device, reflected light corresponding to the light-emitting pixel after the driving current is switched in, and obtain a reflected light parameter corresponding to the reflected light.
The obtaining unit 12 is configured to obtain a real-time parameter corresponding to the light-emitting pixel according to the size parameter corresponding to the hole and the reflected light parameter.
The adjusting unit 13 is configured to adjust the driving current according to the real-time parameter, so as to perform the brightness compensation.
Further, in the embodiments of the present application, the light emitting pixels perform light transmission through the holes.
Further, in the embodiments of the present application, the reflected light parameter includes a light intensity or a light brightness; accordingly, the real-time parameter includes a real-time intensity or a real-time brightness.
Further, in an embodiment of the present application, the obtaining unit 12 is specifically configured to determine a first proportional value according to a size parameter corresponding to the hole and a light transmission parameter corresponding to the light emitting pixel; and determining the real-time parameter according to the first proportional value and the reflected light parameter.
Further, in the embodiment of the present application, the adjusting unit 13 is specifically configured to send an adjusting request; wherein the adjustment request carries the real-time parameters; receiving an adjustment response corresponding to the adjustment request; wherein the regulation response carries a regulated drive current; and switching in the adjusted driving current to perform the brightness compensation.
Further, in an embodiment of the present application, the adjusting unit 13 is specifically configured to obtain an original parameter corresponding to the light-emitting pixel; determining a target current according to the original parameters and the real-time parameters; and sending the target current to realize the adjustment of the driving current so as to perform the brightness compensation.
Further, in an embodiment of the present application, the adjusting unit 13 is specifically configured to determine a second ratio value according to the original parameter and the real-time parameter; and determining the target current according to the second proportional value and the driving current.
Further, in embodiments of the present application, the light emitting pixels transmit the reflected light to the substrate through the apertures; the substrate receives the reflected light by the detection device.
Fig. 6 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. 6, 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 strip 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 strip 16, the organic light emitting layer 17, the anode strip 18, and the communication interface 19.
In the 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 (PLD), 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 functions may be other devices, and the embodiments of the present application are not limited in particular. The display 1 may further comprise a memory 15, which memory 15 may be connected to the processor 14, wherein the memory 15 is adapted to store executable program code comprising computer operating instructions, and wherein the memory 15 may comprise a high speed RAM memory and may further comprise a non-volatile memory, such as at least two disk memories.
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, by the detection device, reflected light corresponding to the light-emitting pixel, and obtain a reflected light parameter corresponding to the reflected light; obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters corresponding to the holes and the reflected light parameters; and adjusting the driving current according to the real-time 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 pixel back electrode plate of the display is provided with the hole, the substrate of the display is provided with the detection device, and after the display is connected with the driving current, the reflected light corresponding to the luminous pixel is detected through the detection device to obtain the reflected light parameter corresponding to the reflected light; obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters and the reflected light parameters corresponding to the holes; and adjusting the driving current according to the real-time parameters to perform brightness compensation. Therefore, in the embodiment of the application, the display can detect the reflected light transmitted by the light-emitting pixels through the holes of the pixel back electrode plate through the detection device arranged on the substrate to obtain the corresponding reflected light parameters, and further determine the real-time parameters corresponding to the light-emitting pixels by combining the size parameters of the holes, so that the driving current can be adjusted according to the real-time parameters, the brightness of the display can be effectively compensated, the real-time compensation of 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 reflected light corresponding to the light-emitting pixel through the detection device to obtain the reflected light parameter corresponding to the reflected light;
obtaining real-time parameters corresponding to the light-emitting pixels according to the size parameters corresponding to the holes and the reflected light parameters;
and adjusting the driving current according to the real-time 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 method of brightness compensation for use in a display having a pixel back plate provided with an aperture, a substrate of the display being provided with a detection means, the method comprising:
after the driving current is switched in, detecting the reflected light corresponding to the light-emitting pixel through the detection device to obtain the reflected light parameter corresponding to the reflected light;
determining a first proportional value according to the size parameter corresponding to the hole and the light transmission parameter corresponding to the light-emitting pixel;
determining real-time parameters according to the first proportion value and the reflected light parameters;
adjusting the driving current according to the real-time parameters to perform the brightness compensation;
wherein, the display is a passive organic diode PMOLED display.
2. The method of claim 1, wherein the emissive pixels transmit light through the aperture.
3. The method of claim 1, wherein the reflected light parameter comprises a light intensity or a light brightness; accordingly, the number of the first and second electrodes,
the real-time parameter includes a real-time intensity or a real-time brightness.
4. The method of claim 1, wherein said adjusting said drive current to perform said brightness compensation in accordance with said real-time parameter comprises:
sending a regulation request; wherein the adjustment request carries the real-time parameters;
receiving an adjustment response corresponding to the adjustment request; wherein the regulation response carries a regulated drive current;
and switching in the adjusted driving current to perform the brightness compensation.
5. The method of claim 1, wherein said adjusting said drive current to perform said brightness compensation in accordance with said real-time parameter comprises:
acquiring original parameters corresponding to the luminous pixels;
determining a target current according to the original parameters and the real-time parameters;
and sending the target current to realize the adjustment of the driving current so as to perform the brightness compensation.
6. The method of claim 5, wherein determining a target current from the raw parameters and the real-time parameters comprises:
determining a second proportional value according to the original parameter and the real-time parameter;
and determining the target current according to the second proportional value and the driving current.
7. The method of claim 2, wherein the light emitting pixels transmit light through the aperture, comprising:
the light emitting pixels transmit the reflected light to the substrate through the holes;
the substrate receives the reflected light by the detection device.
8. A display, wherein a pixel back plate of the display is provided with an aperture, and a substrate of the display is provided with a detection device, the display comprising: a detection unit, an acquisition unit and an adjustment unit,
the detection unit is used for detecting the reflected light corresponding to the light-emitting pixels through the detection device after the driving current is switched in, and obtaining the reflected light parameters corresponding to the reflected light;
the acquisition unit is used for determining a first proportional value according to the size parameter corresponding to the hole and the light transmission parameter corresponding to the light-emitting pixel; determining real-time parameters according to the first proportion value and the reflected light parameters;
the adjusting unit is used for adjusting the driving current according to the real-time parameters so as to perform brightness compensation;
wherein, the display is a passive organic diode PMOLED display.
9. The display of claim 8, wherein the light-emitting pixels transmit light through the apertures.
10. The display of claim 8, wherein the reflected light parameter comprises a light intensity or a light brightness; accordingly, the number of the first and second electrodes,
the real-time parameter includes a real-time intensity or a real-time brightness.
11. The display of claim 8,
the adjusting unit is specifically configured to send an adjusting request; wherein the adjustment request carries the real-time parameters; receiving an adjustment response corresponding to the adjustment request; wherein the regulation response carries a regulated drive current; and switching in the adjusted driving current to perform the brightness compensation.
12. The display of claim 8,
the adjusting unit is specifically configured to obtain an original parameter corresponding to the light-emitting pixel; determining a target current according to the original parameters and the real-time parameters; and sending the target current to realize the adjustment of the driving current so as to perform the brightness compensation.
13. The display of claim 12,
the adjusting unit is specifically configured to determine a second proportional value according to the original parameter and the real-time parameter; and determining the target current according to the second proportional value and the driving current.
14. The display of claim 9, wherein the light emitting pixels transmit the reflected light through the apertures toward the substrate; the substrate receives the reflected light by the detection device.
15. A display comprising a processor, a memory storing instructions executable by the processor, a cathode strip, an organic light emitting layer and an anode strip, wherein a pixel back plate of the display is provided with an aperture, and wherein a substrate of the display is provided with detection means, the instructions when executed by the processor implementing 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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| CN112767878B (en) * | 2021-01-29 | 2022-09-23 | 昆山国显光电有限公司 | Brightness adjusting method and device and display equipment |
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