CN115762403B - Brightness compensation method, brightness compensation device and display device - Google Patents
Brightness compensation method, brightness compensation device and display device Download PDFInfo
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Abstract
The application relates to a brightness compensation method, a brightness compensation device and a display device, wherein the brightness compensation method comprises the following steps: setting a non-display area on at least one side of the display area, wherein the non-display area comprises at least three color sub-pixels, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area; acquiring a brightness value of each sub-pixel in the non-display area; determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area; the brightness compensation is carried out on the sub-pixels in the corresponding display area according to the compensation coefficient, the brightness compensation coefficient of the sub-pixels in the display area is generated by acquiring the brightness of the sub-pixels in the non-display area, and the brightness of the sub-pixels in the display area is compensated according to the compensation coefficient, so that the whole display brightness of the display panel overcomes the influence of the attenuation rate, namely the whole display brightness is more uniform, and the brightness uniformity and the user experience of the display panel are improved.
Description
Technical Field
The present disclosure relates to the field of display panels, and particularly to a brightness compensation method, a brightness compensation device, and a display device.
Background
An Organic Light-Emitting Diode (OLED), also known as an Organic laser display (OrganicElectroluminesence Display, OELD). The OLED display is thinner, lighter, higher in brightness, lower in power consumption, faster in response, higher in contrast, wider in color gamut, wider in viewing angle than a liquid crystal display (Liquid Crysta lDisplay, LCD), and has no backlight source, and can be made ultra-thin, thus being popular with consumers.
At present, along with the continuous development of the OLED display technology, the OLED display screen is applied to different application scenes, the different application scenes correspond to different temperature environments, and usually in different temperature environment conditions, the brightness of the light-emitting sub-pixels with different colors in the OLED display panel has different degrees of attenuation, and the brightness attenuation among the different colors is different, so that the phenomenon of uneven brightness attenuation among the light-emitting sub-pixels with different colors is caused, the display brightness of the display panel is uneven, and the display effect is affected.
Disclosure of Invention
The application provides a brightness compensation method, brightness compensation equipment and a display device, which are used for solving the problems that in the related art, uneven brightness attenuation among subpixels of different colors causes uneven display brightness of a display panel and affects the display effect.
In a first aspect, the present application provides a brightness compensation method, the method comprising: at least one non-display area is arranged on one side of the display area, the non-display area comprises sub-pixels with at least three colors, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area; acquiring a brightness value of each sub-pixel in the non-display area; determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area; and carrying out brightness compensation on the corresponding sub-pixels in the display area according to the compensation coefficient.
In some examples of this embodiment, obtaining the luminance value of each sub-pixel in the non-display area includes: a photoelectric acquisition device is arranged on each sub-pixel in the non-display area; and acquiring the brightness value of each sub-pixel in the non-display area through the photoelectric acquisition device.
In some examples of this embodiment, prior to determining each sub-pixel compensation train in the display area, the method further comprises: driving the sub-pixels of each color in the non-display area according to a gray scale sequence; acquiring the brightness of each color sub-pixel in the non-display area while acquiring the resistance of each color sub-pixel in the non-display area when driving each color sub-pixel in the non-display area; and generating a brightness curve of each color sub-pixel in the non-display area based on the acquired brightness and resistance of each color sub-pixel in the non-display area.
In some examples of this embodiment, determining each sub-pixel compensation coefficient in the display area from the luminance values of the different color sub-pixels in the non-display area includes: determining the corresponding display brightness of the current driving gray scale of the sub-pixel of each color in the non-display area according to the brightness curve, and determining the brightness attenuation rate of the sub-pixel of each color in the non-display area according to the brightness value of the sub-pixel of each color in the non-display area and the corresponding display brightness; and determining the compensation coefficient corresponding to the sub-pixel of each color in the display area based on the brightness attenuation rate.
In some examples of this embodiment, determining the compensation coefficient corresponding to the sub-pixel of each color in the display area based on the luminance decay rate includes: comparing the brightness attenuation rates corresponding to the sub-pixels of each color in the non-display area, and determining the highest brightness attenuation rate; and taking the sub-pixels of other colors except the sub-pixel of the color corresponding to the highest brightness attenuation rate in the non-display area as a target sub-pixel, and determining the compensation coefficient corresponding to the target sub-pixel based on the brightness attenuation rate corresponding to the target sub-pixel, wherein the compensation coefficient is used for reducing the brightness of the sub-pixel of the same color as the target sub-pixel in the display area.
In some examples of this embodiment, performing brightness compensation on the sub-pixels in the corresponding display area according to the compensation coefficient includes: comparing the brightness attenuation rates corresponding to the sub-pixels of each color in the non-display area, and determining the lowest brightness attenuation rate; and taking the sub-pixels of other colors except the sub-pixel of the color corresponding to the lowest brightness attenuation rate in the non-display area as a target sub-pixel, and determining the compensation coefficient corresponding to the target sub-pixel based on the brightness attenuation rate corresponding to the target sub-pixel, wherein the compensation coefficient is used for improving the brightness of the sub-pixel of the same color as the target sub-pixel in the display area.
In some examples of this embodiment, performing brightness compensation on the sub-pixels in the corresponding display area according to the compensation coefficient includes: and modifying the data voltage corresponding to the sub-pixels in the display area according to the compensation coefficient so as to carry out brightness compensation on the sub-pixels in the display area.
In a second aspect, the present application provides a brightness compensation apparatus, comprising: a memory; a processor electrically connected to the memory; the memory stores a computer program that is executed by the processor to implement the brightness compensation method as set forth in any one of the above.
In a third aspect, there is provided a display device comprising a frame and a display panel, the display panel being disposed on the frame and having sub-pixels disposed therein, the sub-pixels in the display panel being luminance compensated according to the luminance compensation method as described in any one of the above.
In some examples, the subpixels include: red, green, and blue sub-pixels; or, the subpixels include a red subpixel, a green subpixel, a blue subpixel, and a yellow subpixel; or, the subpixels include a red subpixel, a green subpixel, a blue subpixel, and a white subpixel.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the brightness compensation method provided by the embodiment of the application comprises the following steps: setting a non-display area on at least one side of a display area, wherein the non-display area comprises sub-pixels with at least three colors, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area; acquiring a brightness value of each sub-pixel in the non-display area; determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area; and carrying out brightness compensation on the corresponding sub-pixels in the display area according to the compensation coefficient, and generating a brightness compensation coefficient of the sub-pixels in the display area by acquiring the brightness of the sub-pixels in the non-display area, wherein the brightness of the sub-pixels in the display area is compensated according to the compensation coefficient, so that the whole display brightness of the display panel overcomes the influence of the attenuation rate, namely the whole display brightness is more uniform, and the brightness uniformity and the user experience of the display panel are improved.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a basic flow chart of a brightness compensation method according to a first embodiment of the present disclosure;
fig. 2 is a schematic basic structure of a display panel according to a second embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a second embodiment of the present application in which a photodiode film is disposed on a subpixel;
FIG. 4 is a schematic diagram illustrating the characteristics of a photodiode material according to a second embodiment of the present disclosure;
FIG. 5 is a basic schematic diagram of a photodiode material with external series high precision resistor provided in a second embodiment of the present application;
fig. 6 is a basic schematic diagram of a brightness compensation device according to a third embodiment of the present application;
fig. 7 is a basic schematic diagram of a display device according to a fourth embodiment of the present application;
fig. 8 is a schematic structural diagram of a brightness compensation device according to a fifth embodiment of the present application.
Description of the reference numerals
1-setting a module; 2-an acquisition module; 3-a determination module; 4-a compensation module; 5-frame; 6-a display panel; 11-A region; region 12-B; 13-subpixels; 14-photodiode thin film; a 111-processor; 112-a communication interface; 113-a memory; 114-a communication bus.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Example 1
In order to solve the problem of the display effect being affected due to uneven brightness attenuation among subpixels of different colors in the related art, referring to fig. 1, fig. 1 is a brightness compensation method provided in an embodiment of the present application, the method includes:
s101, setting a non-display area on at least one side of a display area, wherein the non-display area comprises sub-pixels with at least three colors, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area;
s102, acquiring a brightness value of each sub-pixel in the non-display area;
s103, determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area;
s104, carrying out brightness compensation on the corresponding sub-pixels in the display area according to the compensation coefficient.
It can be appreciated that the display area is an area where the user can see the sub-pixels after packaging, the non-display area is an area where the user cannot see the sub-pixels after packaging, and at least one side of the display area is provided with the non-display area, and it can be appreciated that in some examples, multiple sides of the display area may be provided with the non-display area; the display area is internally provided with a plurality of sub-pixels arranged in an array, the sub-pixels arranged in the array comprise at least three colors, and the colors of the sub-pixels in the non-display area are the same as those of the sub-pixels in the display area; for example, if there are three red, blue and green sub-pixels in the display area, there are also three red, blue and green sub-pixels in the non-display area. More specifically, the material and specification of the sub-pixels in the display area are the same as those of the sub-pixels in the non-display area.
It can be understood that the luminance attenuation of the sub-pixels in the display area is related to the running time, the temperature, and the like, specifically, as the running time increases, the luminance attenuation of the sub-pixels in the display area also increases, so that, in order to make the attenuation rate of the sub-pixels in the non-display area coincide with the attenuation rate of the sub-pixels in the display area, when the sub-pixels in the display area are driven to emit light, the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area, therefore, by the above arrangement, the display effect of the sub-pixels in the non-display area coincides with the display effect of the sub-pixels in the display area, and then, the luminance of the sub-pixels in the display area can be determined by acquiring the luminance of the sub-pixels in the non-display area, so that the luminance of the sub-pixels in the display area is accurately acquired, and the luminance compensation is performed on the sub-pixels in the display area according to the acquired luminance.
According to the brightness compensation method provided by the embodiment, the brightness compensation coefficient of the sub-pixel in the display area is generated by acquiring the brightness of the sub-pixel in the non-display area, and the brightness of the sub-pixel in the display area is compensated according to the compensation coefficient, so that the whole display brightness of the display panel overcomes the influence of the attenuation rate, namely the whole display brightness is more uniform, and the brightness uniformity and the user experience of the display panel are improved.
In some examples of this embodiment, obtaining the luminance value of each sub-pixel in the non-display area includes: a photoelectric acquisition device is arranged on each sub-pixel in the non-display area; and acquiring the brightness value of each sub-pixel in the non-display area through the photoelectric acquisition device. The photoelectric acquisition device is arranged on each sub-pixel in the non-display area, so that the brightness value of each sub-pixel in the non-display area is accurately acquired, the attenuation rate of the sub-pixel in the display area is then determined through the brightness value of each sub-pixel in the non-display area, and the problem that the display effect is affected due to the fact that the photoelectric acquisition device is arranged in the display area to acquire the brightness value is avoided.
The above example is supported, wherein the photoelectric acquisition device includes, but is not limited to, a photodiode device and a resistor, the photodiode device is made of a photodiode thin film, when a fixed voltage is reversely applied to the photodiode device, a reverse current is increased in proportion to an increase of illumination intensity, so that an optical signal received by the photodiode device can be converted into an electrical signal by detecting the voltage of the photodiode device; specifically, a photodiode film made of a semiconductor is covered on a sub-pixel of a non-display area, and is led out through an in-plane, and then a high-precision resistor is connected in series outside and used for detecting voltages at two ends of the resistor by a TCON IC (timing control chip) so as to convert an acquired optical signal into an electric signal, thereby knowing the brightness attenuation condition of the sub-pixel in the non-display area.
Wherein the acquiring, by the photoelectric acquiring means, the luminance value on each sub-pixel in the non-display area includes: the brightness value of each sub-pixel in the non-display area is obtained in real time, or the brightness value of each sub-pixel in the non-display area is obtained periodically. Wherein obtaining the brightness value of each sub-pixel in the non-display area in real time comprises: sequentially lighting each sub-pixel in the non-display area from 0 to 255 gray scales in a circulating manner, and acquiring the brightness value of each sub-pixel in the non-display area in real time; the periodically acquiring the brightness value of each sub-pixel in the non-display area comprises the following steps: periodically gradually brightening each sub-pixel in the non-display area from 0 to 255 gray scale, and acquiring the brightness value of each sub-pixel in the non-display area when each sub-pixel in the non-display area is lighted; it can be understood that the present embodiment does not limit the period of time, and may be flexibly set by a person concerned, taking a period of five minutes as an example, the luminance of the sub-pixels in the non-display area is changed from 0 to 255 gray scales every five minutes, and the luminance value of each sub-pixel in the non-display area is obtained.
In some examples of this embodiment, prior to determining each sub-pixel compensation train in the display area, the method further comprises: driving the sub-pixels of each color in the non-display area according to a gray scale sequence; when driving the sub-pixels of each color in the non-display area, the brightness of the sub-pixels of each color in the non-display area is obtained, and simultaneously the resistance of the sub-pixels of each color in the non-display area is obtained. And generating a brightness curve of each color sub-pixel in the non-display area based on the acquired brightness and resistance of each color sub-pixel in the non-display area. In the test stage, gradually brightening the sub-pixels in the non-display area according to 0-255 gray scales, and acquiring the brightness of the sub-pixels in the non-display area when the sub-pixels in the non-display area are gradually brightening according to 0-255 gray scales, so as to acquire a brightness curve of the sub-pixels, and then acquiring the brightness to be displayed by the sub-pixels when a certain gray scale is obtained according to the brightness curve; it can be appreciated that in some examples, each color sub-pixel corresponds to a luminance curve; in some examples, the subpixels of multiple colors correspond to the same luminance curve.
In some examples of this embodiment, determining each sub-pixel compensation coefficient in the display area from the luminance values of the different color sub-pixels in the non-display area includes: determining the corresponding display brightness of the current driving gray scale of the sub-pixel of each color in the non-display area according to the brightness curve, and determining the brightness attenuation rate of the sub-pixel of each color in the non-display area according to the brightness value of the sub-pixel of each color in the non-display area and the corresponding display brightness; and determining the compensation coefficient corresponding to the sub-pixel of each color in the display area based on the brightness attenuation rate. It can be appreciated that different gray scales correspond to different display luminance, and the attenuation rates of the sub-pixels of different colors may be different, so it is necessary to determine the luminance attenuation rate of each sub-pixel by acquiring the display luminance of each sub-pixel in the non-display area and the current luminance value.
In the above example, for example, the gray scale of the sub-pixel in the non-display area is 100, the luminance to be displayed corresponding to the gray scale 100 is X, the current actual luminance is Y, and Y is smaller than X, and the luminance attenuation rate corresponding to the sub-pixel can be determined according to X and Y.
In some examples of this embodiment, determining the compensation coefficient corresponding to the sub-pixel of each color in the display area based on the luminance decay rate includes: comparing the brightness attenuation rates corresponding to the sub-pixels of each color in the non-display area, and determining the highest brightness attenuation rate; and taking the sub-pixels of other colors except the sub-pixel of the color corresponding to the highest brightness attenuation rate in the non-display area as a target sub-pixel, and determining the compensation coefficient corresponding to the target sub-pixel based on the brightness attenuation rate corresponding to the target sub-pixel, wherein the compensation coefficient is used for reducing the brightness of the sub-pixel of the same color as the target sub-pixel in the display area. Specifically, the attenuation rates of the sub-pixels of each color are different, the sub-pixel of the color with the highest brightness attenuation rate can be determined after the attenuation rate of the sub-pixel of each color is compared, the sub-pixel of the color with the highest brightness attenuation rate is excluded at this time, the sub-pixel of other colors is taken as the target sub-pixel, at this time, the attenuation rate of the target sub-pixel is lower than that of the sub-pixel of the color with the highest brightness attenuation rate, that is, at this time, the brightness of the target sub-pixel is higher than that of the non-target sub-pixel under the same gray level, therefore, at this time, the compensation coefficient corresponding to the target sub-pixel is determined according to the brightness attenuation rate corresponding to the target sub-pixel, and the brightness of the target sub-pixel is reduced to that of the non-target sub-pixel based on the compensation coefficient.
Specifically, for example, there are three sub-pixels of red, blue and green, the luminance decay rate of the red sub-pixel is 20%, the luminance decay rate of the blue sub-pixel is 25%, the luminance decay rate of the green sub-pixel is 30%, at this time, the luminance decay rate of the green sub-pixel is the highest, and the highest luminance decay rate is 30%, the blue sub-pixel and the red sub-pixel are used as target sub-pixels, and the compensation coefficients of the blue sub-pixel and the red sub-pixel are determined respectively, so as to reduce the luminance of the red sub-pixel and the blue sub-pixel.
In some examples of this embodiment, performing brightness compensation on the sub-pixels in the corresponding display area according to the compensation coefficient includes: comparing the brightness attenuation rates corresponding to the sub-pixels of each color in the non-display area, and determining the lowest brightness attenuation rate; and taking the sub-pixels of other colors except the sub-pixel of the color corresponding to the lowest brightness attenuation rate in the non-display area as a target sub-pixel, and determining the compensation coefficient corresponding to the target sub-pixel based on the brightness attenuation rate corresponding to the target sub-pixel, wherein the compensation coefficient is used for improving the brightness of the sub-pixel of the same color as the target sub-pixel in the display area. Specifically, the sub-pixels of each color are different in attenuation rate, the sub-pixel of the color with the lowest brightness attenuation rate can be determined after the attenuation rate of the sub-pixel of each color is compared, the sub-pixel of the color with the lowest brightness attenuation rate is eliminated at this time, the sub-pixel of other colors is taken as the target sub-pixel, at this time, the attenuation rate of the target sub-pixel is lower than that of the sub-pixel of the color with the highest brightness attenuation rate, that is, at this time, the brightness of the target sub-pixel is lower than that of the non-target sub-pixel under the same gray level, therefore, at this time, the compensation coefficient corresponding to the target sub-pixel is determined according to the brightness attenuation rate corresponding to the target sub-pixel, and the brightness of the target sub-pixel is improved to that of the non-target sub-pixel based on the compensation coefficient.
Specifically, for example, there are three sub-pixels of red, blue and green, the luminance decay rate of the red sub-pixel is 20%, the luminance decay rate of the blue sub-pixel is 25%, and the luminance decay rate of the green sub-pixel is 30%, at this time, the luminance decay rate of the red sub-pixel is the lowest, and the lowest luminance decay rate is 20%, the blue sub-pixel and the green sub-pixel are used as target sub-pixels, and the compensation coefficients of the blue sub-pixel and the green sub-pixel are determined, respectively, so as to improve the luminance of the green sub-pixel and the blue sub-pixel.
In some examples of this embodiment, performing brightness compensation on the sub-pixels in the corresponding display area according to the compensation coefficient includes: and modifying the data voltage corresponding to the sub-pixels in the display area according to the compensation coefficient so as to carry out brightness compensation on the sub-pixels in the display area. Specifically, the brightness of the sub-pixel in the display area is related to the data voltage output by the data line, when the data voltage output by the data line is increased, the brightness of the sub-pixel is increased, and when the data voltage output by the data line is reduced, the brightness of the sub-pixel is reduced. Therefore, the present example realizes the enhancement or reduction of the luminance of the sub-pixels in the display area by modifying the data voltages corresponding to the sub-pixels in the display area according to the compensation coefficients to perform the luminance compensation on the sub-pixels in the display area.
The brightness compensation method provided in this embodiment includes: setting a non-display area on at least one side of a display area, wherein the non-display area comprises sub-pixels with at least three colors, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area; acquiring a brightness value of each sub-pixel in the non-display area; determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area; and carrying out brightness compensation on the corresponding sub-pixels in the display area according to the compensation coefficient, and generating a brightness compensation coefficient of the sub-pixels in the display area by acquiring the brightness of the sub-pixels in the non-display area, wherein the brightness of the sub-pixels in the display area is compensated according to the compensation coefficient, so that the whole display brightness of the display panel overcomes the influence of the attenuation rate, namely the whole display brightness is more uniform, and the brightness uniformity and the user experience of the display panel are improved.
Example two
For a better understanding of the present invention, the present embodiment provides a more specific example for illustration;
specifically, the present example provides a brightness compensation method, which specifically includes:
as shown in fig. 2, fig. 2 is a schematic diagram of a basic structure of a display panel, in which a non-display area B12 is added beside a display area a 11 when designing an OLED display panel, the non-display area includes a set of dummy sub-pixels 14, and the dummy sub-pixels 14 include red sub-pixels 14, green sub-pixels 14, and blue sub-pixels 14. A layer of photodiode film is covered on the Dummy sub-pixel 14, as shown in fig. 3, to obtain luminance values of 3 Dummy sub-pixels 14, and the OLED has luminance attenuation at different temperatures, so as to perform data compensation on an actual display area according to the luminance value attenuation, and change the data voltage of each sub-pixel 14, thereby repairing color cast.
Wherein the photodiode film is made of photodiode material having the following characteristics:
as shown in fig. 4, fig. 4 can be expressed as that when a fixed voltage is reversely applied to the photodiode, the reverse current increases in proportion to the increase in the illumination intensity.
According to the characteristics of the photodiode material, the photodiode film 13 made of semiconductor is covered on the Dummy sub-pixel 14 in the B region of the OLED display panel, led out through the display panel surface, and a high-precision resistor is connected in series to the outside, as shown in fig. 5, for detecting the voltage Vr across the resistor by the TCON IC (timing control chip), thereby knowing the luminance degradation of the OLED.
In design, the Dummy sub-pixel 14 is gradually lightened from 0 to 255 gray scale, and the voltage curves at two ends of the resistor corresponding to the brightness interval of the whole OLED sub-pixel 14 are obtained by detecting the voltage at two ends of the resistor, so that the brightness curves of three sub-pixels 14 are obtained, and further, in the subsequent use, the brightness of each sub-pixel 14 to be displayed can be obtained according to the brightness curves.
When the panel is actually used, the luminance of the Dummy sub-pixel 14 can be designed to change from 0 to 255 gray scale once within 5 minutes, and the corresponding curve is detected through the photodiode, when the temperature change affects the luminance of the OLED, for example, the green sub-pixel 14 has large curve attenuation, the gray scale of red and blue in the panel is correspondingly reduced through the internal algorithm of the TCON IC, so that the display color of the panel is not deviated.
Example III
Based on the same concept, the present embodiment provides a brightness compensation device, as shown in fig. 6, including:
a setting module 1, wherein the setting module 1 is used for setting at least one non-display area on one side of a display area, the non-display area comprises sub-pixels with at least three colors, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area;
an acquisition module 2, wherein the acquisition module 2 is configured to acquire a brightness value of each sub-pixel in the non-display area;
a determining module 3, where the determining module 3 is configured to determine a compensation coefficient of each sub-pixel in the display area according to brightness values of sub-pixels with different colors in the non-display area;
and the compensation module 4 is used for carrying out brightness compensation on the corresponding sub-pixels in the display area according to the compensation coefficient.
It can be understood that each module of the brightness compensation device provided in this embodiment can combine and implement each step of the brightness compensation method, so as to achieve the same technical effects as each step of the brightness compensation method, which is not described herein.
Example IV
Based on the same concept, this embodiment provides a display device, as shown in fig. 7, where the display device includes a frame 5 and a display panel 6, the display panel 6 is disposed on the frame 5, and sub-pixels are disposed in the display panel 6, and the sub-pixels in the display panel 6 perform brightness compensation according to the brightness compensation method as described in any one of the above.
In some examples, the subpixels include: red, green, and blue sub-pixels; or alternatively, the first and second heat exchangers may be,
the subpixels include a red subpixel, a green subpixel, a blue subpixel, and a yellow subpixel; or alternatively, the first and second heat exchangers may be,
the subpixels include a red subpixel, a green subpixel, a blue subpixel, and a white subpixel.
Example five
As shown in fig. 8, the embodiment of the present application provides a brightness compensation device, which includes a processor 111, a communication interface 112, a memory 113, and a communication bus 114, wherein the processor 111, the communication interface 112, and the memory 113 perform communication with each other through the communication bus 114,
a memory 113 for storing a computer program;
in one embodiment of the present application, the processor 111 is configured to implement the steps of the method provided in any of the foregoing method embodiments when executing the program stored on the memory 113.
The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method provided by any of the method embodiments described above.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method of brightness compensation, the method comprising:
at least one non-display area is arranged on one side of the display area, the non-display area comprises sub-pixels with at least three colors, and the sub-pixels in the non-display area are driven along with the driving of the sub-pixels in the display area;
acquiring a brightness value of each sub-pixel in the non-display area;
determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area;
performing brightness compensation on the corresponding sub-pixels in the display area according to the compensation coefficient;
before determining each sub-pixel compensation train in the display area, the method further comprises:
driving the sub-pixels of each color in the non-display area according to a gray scale sequence;
acquiring the brightness of each color sub-pixel in the non-display area while acquiring the resistance of each color sub-pixel in the non-display area when driving each color sub-pixel in the non-display area;
generating a brightness curve of each color sub-pixel in the non-display area based on the acquired brightness and resistance of each color sub-pixel in the non-display area;
determining a compensation coefficient of each sub-pixel in the display area according to the brightness values of the sub-pixels with different colors in the non-display area, wherein the compensation coefficient comprises the following steps:
determining the corresponding display brightness of the current driving gray scale of the sub-pixel of each color in the non-display area according to the brightness curve, and determining the brightness attenuation rate of the sub-pixel of each color in the non-display area according to the brightness value of the sub-pixel of each color in the non-display area and the corresponding display brightness;
and determining the compensation coefficient corresponding to the sub-pixel of each color in the display area based on the brightness attenuation rate.
2. The method of claim 1, wherein obtaining the luminance value of each sub-pixel in the non-display area comprises:
a photoelectric acquisition device is arranged on each sub-pixel in the non-display area;
and acquiring the brightness value of each sub-pixel in the non-display area through the photoelectric acquisition device.
3. The luminance compensation method according to claim 1, wherein determining the compensation coefficient corresponding to the sub-pixel of each color in the display area based on the luminance decay rate comprises:
comparing the brightness attenuation rates corresponding to the sub-pixels of each color in the non-display area, and determining the highest brightness attenuation rate;
and taking the sub-pixels of other colors except the sub-pixel of the color corresponding to the highest brightness attenuation rate in the non-display area as a target sub-pixel, and determining the compensation coefficient corresponding to the target sub-pixel based on the brightness attenuation rate corresponding to the target sub-pixel, wherein the compensation coefficient is used for reducing the brightness of the sub-pixel of the same color as the target sub-pixel in the display area.
4. The brightness compensation method according to claim 1, wherein brightness compensation is performed on the sub-pixels in the corresponding display area according to the compensation coefficient, comprising:
comparing the brightness attenuation rates corresponding to the sub-pixels of each color in the non-display area, and determining the lowest brightness attenuation rate;
and taking the sub-pixels of other colors except the sub-pixel of the color corresponding to the lowest brightness attenuation rate in the non-display area as a target sub-pixel, and determining the compensation coefficient corresponding to the target sub-pixel based on the brightness attenuation rate corresponding to the target sub-pixel, wherein the compensation coefficient is used for improving the brightness of the sub-pixel of the same color as the target sub-pixel in the display area.
5. The brightness compensation method according to claim 3 or 4, wherein brightness compensation is performed on the sub-pixels in the corresponding display area according to the compensation coefficient, comprising:
and modifying the data voltage corresponding to the sub-pixels in the display area according to the compensation coefficient so as to carry out brightness compensation on the sub-pixels in the display area.
6. A brightness compensation apparatus, comprising:
a memory;
a processor electrically connected to the memory;
the memory stores a computer program that is executed by the processor to implement the brightness compensation method of any one of claims 1-5.
7. A display device, characterized in that the display device comprises a frame and a display panel, the display panel is arranged on the frame, and sub-pixels are arranged in the display panel, and the sub-pixels in the display panel perform brightness compensation according to the brightness compensation method of any one of claims 1-5.
8. The display device of claim 7, wherein the sub-pixel comprises: red, green, and blue sub-pixels; or alternatively, the first and second heat exchangers may be,
the subpixels include a red subpixel, a green subpixel, a blue subpixel, and a yellow subpixel; or alternatively, the first and second heat exchangers may be,
the subpixels include a red subpixel, a green subpixel, a blue subpixel, and a white subpixel.
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