CN110706637A - Display panel brightness compensation method, compensation device and display device - Google Patents
Display panel brightness compensation method, compensation device and display device Download PDFInfo
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Abstract
The embodiment of the invention discloses a brightness compensation method, a brightness compensation device and a display device of a display panel, wherein the brightness compensation method of the display panel comprises the steps of obtaining brightness values at a plurality of different moments; determining a brightness attenuation fitting parameter according to the brightness values at a plurality of different moments and a brightness attenuation formula; resetting the initial brightness value, and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter; and performing brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel. The technical scheme provided by the embodiment of the invention realizes real-time and accurate compensation of the brightness attenuation of the display panel.
Description
Technical Field
The embodiment of the invention relates to the field of display, in particular to a brightness compensation method and device of a display panel and a display device.
Background
With the development of display technology, the requirement for display performance of display panels is higher and higher, however, the conventional display panels have brightness attenuation with the increase of lighting time, so that improvement of the brightness attenuation of the display panels over time is a problem to be solved in the industry.
Disclosure of Invention
The embodiment of the invention provides a brightness compensation method and device of a display panel and a display device, which are used for accurately compensating brightness attenuation of the display panel in real time.
In order to realize the technical problem, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a method for compensating brightness of a display panel, including:
acquiring brightness values at a plurality of different moments;
determining a brightness attenuation fitting parameter according to the brightness values at the different moments and a brightness attenuation formula;
resetting the initial brightness value, and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter;
and performing brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel.
Further, the determining a brightness attenuation fitting parameter according to the brightness values at the different time instants and the brightness attenuation formula includes:
converting the brightness attenuation formula into a linear equation;
determining linear regression solutions and linear regression coefficients of different parameters in the brightness attenuation formula according to brightness values at different moments except the initial moment and the linear equation;
and calculating a first linear regression coefficient according to the acquired brightness value corresponding to the initial moment and the linear regression coefficient.
Further, the resetting the initial brightness value and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter includes:
determining an optimal initial brightness value according to the brightness attenuation fitting parameter and a set initial brightness value;
and determining an optimal brightness attenuation fitting curve according to the optimal initial brightness value and the brightness attenuation fitting parameter.
Further, the determining an optimal initial brightness value according to the brightness attenuation fitting parameter and the set initial brightness value includes:
setting an initial brightness value according to the brightness value corresponding to the acquired initial time, wherein the set initial brightness value is valued near the brightness value corresponding to the initial time;
determining a second linear regression coefficient according to the set initial brightness value and the linear regression coefficient;
and determining an optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient.
Further, the determining an optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient includes:
if the product of the first linear regression coefficient and the second linear regression coefficient is greater than or equal to a first threshold value,
the set initial brightness value corresponding to the second linear regression coefficient is the optimal initial brightness.
Further, the determining an optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient includes:
if the product of the first linear regression coefficient and the second linear regression coefficient is less than a first threshold,
setting different initial brightness values, calculating a second linear regression coefficient corresponding to each set initial brightness value, and comparing the product of the second linear regression coefficient corresponding to the next set initial brightness value and the second linear regression coefficient corresponding to the previous set initial brightness value with the first threshold value to determine the optimal initial brightness value.
Further, the performing brightness compensation according to the optimal brightness decay fitting curve and the display panel lighting time includes:
determining a pre-display brightness value corresponding to the lighting time of the display panel according to the optimal brightness attenuation fitting curve;
determining an efficiency value of the display panel according to the pre-display brightness value and the optimal initial brightness value;
and determining the driving current of the display panel according to the efficiency value of the display panel.
In a second aspect, an embodiment of the present invention provides a brightness compensation apparatus for a display panel, including:
the brightness value acquisition module is used for acquiring brightness values at a plurality of different moments;
the fitting parameter obtaining module is used for determining a brightness attenuation fitting parameter according to the brightness values at the different moments and a brightness attenuation formula;
the fitting curve optimization module is used for resetting the initial brightness value and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter;
and the brightness compensation module is used for performing brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel.
Further, the fitting curve optimization module comprises:
the optimal initial brightness value determining unit is used for determining an optimal initial brightness value according to the brightness attenuation fitting parameter and a set initial brightness value;
and the fitting curve generating unit is used for determining an optimal brightness attenuation fitting curve according to the optimal initial brightness value and the brightness attenuation fitting parameter.
In a third aspect, an embodiment of the present invention further provides a display device, including a display panel and the brightness compensation device of the display panel according to the second aspect.
The brightness compensation method of the display panel provided by the embodiment of the invention determines the brightness attenuation fitting parameter according to the brightness values of a plurality of different moments and the brightness attenuation formula by obtaining the brightness values of the plurality of different moments, resets the initial brightness value again, determines the optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter, and performs brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel, the scheme of the embodiment resets the initial brightness value, can compensate the brightness deviation of the initial lighting moment of the display panel, so that the obtained optimal brightness attenuation fitting curve more conforms to the actual brightness attenuation rule of the display panel, the embodiment does not need to measure the threshold voltage of the thin film transistor when compensating the display panel, and can determine the brightness compensation value directly according to the lighting time of the display panel and the optimal brightness attenuation fitting curve, the compensation speed is higher, and the brightness attenuation of the display panel can be accurately compensated in real time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a diagram illustrating a method for compensating brightness of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a luminance compensation apparatus of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a brightness compensation apparatus for a display panel according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the existing display panel has brightness attenuation along with the prolonged lighting time, and in the prior art, the chip is usually used to detect the threshold voltage variation of the thin film transistor in the driving circuit to perform corresponding voltage compensation so as to implement brightness compensation, but the chip has a large data processing amount and a slow response speed, and cannot accurately and timely compensate the brightness attenuation of the display panel.
Based on the above problem, the present embodiment provides a brightness compensation method for a display panel. Fig. 1 is a schematic diagram of a method for compensating brightness of a display panel according to an embodiment of the present invention. Referring to fig. 1, a method for compensating luminance of a display panel according to an embodiment of the present invention includes:
s101, acquiring brightness values at a plurality of different moments.
Specifically, a constant operating current may be input to the display panel to acquire luminance values at a plurality of different times at set time intervals, respectively. In order to reduce the data acquisition amount and the calculation amount, each brightness value of the display panel in a time period from the initial brightness to the set proportion of the brightness decay to the initial brightness can be acquired. For example, the display panel may be driven to display 255 grayscales or 128 grayscales, the luminance values at different times t may be collected, the luminance values at different times of the display panel may be collected from an initial luminance value L (0) corresponding to t ═ 0 to a time t1 corresponding to a luminance value decaying to 9% L (0), and the collection time interval may be 1 to 3 h.
And S102, determining a brightness attenuation fitting parameter according to the brightness values at the different moments and a brightness attenuation formula.
Specifically, the formula of the luminance decay of the display panel is expressed by an e-index,
L(t)＝L(0)*EXP(-a*t^m) (1)
wherein, L (0) is the initial brightness, a and m are brightness attenuation fitting parameters, and a and m parameters in the brightness attenuation formula can be respectively obtained according to the collected brightness values at different times except the initial time, wherein the a and m parameters are represented by L (0). Illustratively, the a and m parameters may be calculated using a least squares fitting algorithm.
S103, resetting the initial brightness value, and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter.
Specifically, because the display panel is in a metastable state during initial lighting, the brightness attenuation is not completely consistent with the trend during normal stable attenuation, and meanwhile, when the brightness acquisition device acquires the brightness of the display panel, certain fluctuation exists, the initial brightness value acquired by the brightness acquisition device may not be a true starting point of the brightness attenuation of the display panel, and the influence caused by the height of the starting point may cause a non-negligible fitting error, so that the initial brightness value may be reset, and an optimal brightness attenuation fitting curve is determined according to the brightness attenuation fitting parameter and the set initial brightness value, so as to reduce the error between the brightness attenuation fitting curve and the true brightness attenuation curve caused by the initial brightness value.
For example, the initial brightness value may be reset according to the measured initial brightness value, and the set brightness value is substituted into the brightness attenuation fitting parameters a and m to obtain a solution of the brightness attenuation fitting parameters, so as to obtain a brightness attenuation fitting curve. And judging the difference degree between the brightness attenuation fitting curve and each measured brightness value, and determining the brightness attenuation fitting curve as the optimal brightness attenuation fitting curve when the difference degree is less than a certain threshold value.
And S104, performing brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel.
Specifically, a pre-display brightness value corresponding to the lighting time of the display panel is obtained according to the optimal brightness attenuation fitting curve, and the driving current of the display panel is adjusted according to the difference between the pre-display brightness value and the initial brightness adopted by the optimal brightness attenuation fitting curve, so that brightness compensation is realized.
The brightness compensation method for a display panel provided in this embodiment determines a brightness attenuation fitting parameter according to a brightness value and a brightness attenuation formula at a plurality of different times by obtaining brightness values at a plurality of different times, re-sets an initial brightness value, determines an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter, and performs brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel, and the scheme of this embodiment re-sets the initial brightness value to compensate brightness deviation at the initial lighting time of the display panel, so that the obtained optimal brightness attenuation fitting curve better conforms to the actual brightness attenuation rule of the display panel, and the embodiment does not need to measure threshold voltage of a thin film transistor when compensating the display panel, and can determine a brightness compensation value directly according to the lighting time of the display panel and the optimal brightness attenuation fitting curve, the compensation speed is higher, and the brightness attenuation of the display panel can be accurately compensated in real time.
Optionally, the determining a brightness attenuation fitting parameter according to the brightness value and the brightness attenuation formula at different time includes: converting the brightness attenuation formula into a linear equation; determining linear regression solutions and linear regression coefficients of different parameters in the brightness attenuation formula according to brightness values at different moments except the initial moment and a linear equation; and calculating a first linear regression coefficient according to the acquired brightness value corresponding to the initial moment and the linear regression coefficient.
Specifically, by taking the second logarithm and the first logarithm at the same time for both sides of the luminance attenuation formula (1), the following two linear equations are obtained:
ln(ln(L(0)/L(t)))＝ln(a)+m*ln(t) (2)
ln(L(0)/L(t))＝a*t^m (3)
wherein, L (0) is an initial brightness value corresponding to the measured initial time. Combining brightness values at different moments except the initial moment, solving the linear regression solution of the m parameter by using a least square method for the formula (2), and returning to obtain the m parameter and the linear regression coefficient R thereof2(m) substituting the m parameter into the formula (3), and solving the linear regression solution and the linear regression coefficient R of the a parameter by using the least square method2(a) Wherein a and R2(a) Are all represented by L (0). By bringing L (0) into R2(a) A first linear regression coefficient may be obtained.
Optionally, resetting the initial brightness value, and determining an optimal brightness decay fitting curve according to the set initial brightness value and the brightness decay fitting parameter, includes:
determining an optimal initial brightness value according to the brightness attenuation fitting parameter and the set initial brightness value; and determining an optimal brightness attenuation fitting curve according to the optimal initial brightness value and the brightness attenuation fitting parameter.
Specifically, the set initial luminance value may be substituted into the linear regression coefficient R of a2(a) Obtaining a second linear regression coefficient according to the second linear regression coefficientAn optimal initial luminance value is determined. For example, when the second linear regression coefficient is the maximum linear regression coefficient of the a parameter, the set initial brightness value corresponding to the second linear regression coefficient is determined to be the optimal initial brightness value, and the obtained brightness attenuation fitting curve is closer to the real brightness attenuation curve of the display panel. And substituting the obtained optimal initial brightness value into each brightness attenuation fitting parameter to obtain a solution of each parameter, and substituting the solution into a brightness attenuation formula to obtain an optimal brightness attenuation fitting curve.
Optionally, determining an optimal initial brightness value according to the brightness attenuation fitting parameter and the set initial brightness value, includes:
setting an initial brightness value according to the brightness value corresponding to the acquired initial time, wherein the set initial brightness value is valued near the brightness value corresponding to the initial time;
determining a second linear regression coefficient according to the set initial brightness value and the linear regression coefficient;
and determining the optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient.
Specifically, the optimal initial brightness value may be determined from the product of the first linear regression coefficient and the second linear regression coefficient. The set initial luminance value L '(0) is taken near the luminance value corresponding to the initial time, that is, L' (0) may be taken within a range of a set value greater than or less than L (0). For example, if L (0) is 400nit, the set initial luminance value L' (0) may take any value of 398nit, 399nit, 401nit, 402nit, or 403 nit.
Optionally, determining an optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient includes:
if the product of the first linear regression coefficient and the second linear regression coefficient is greater than or equal to the first threshold, the set initial brightness value corresponding to the second linear regression coefficient is the optimal initial brightness.
Specifically, the larger the product of the first linear regression coefficient and the second linear regression coefficient is, the closer the second linear regression coefficient is to the maximum value, and the closer the corresponding luminance decay fitting curve is to the trueLuminance decay curve. The first threshold may be set to a different value according to the display panel, and may be set to 0.9999, for example, and the first linear regression coefficient R2(a) And a second linear regression coefficient [ R ]2(a)]' is equal to or greater than 0.9999, when the product is a second linear regression coefficient [ R ]2(a)]' near maximum, the second linear regression coefficient [ R ] can be set2(a)]'the corresponding set initial luminance value L' (0) is determined as the optimum initial luminance Lm(0)。
Optionally, determining an optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient includes: if the product of the first linear regression coefficient and the second linear regression coefficient is smaller than a first threshold value, different initial brightness values are set, a second linear regression coefficient corresponding to each set initial brightness value is calculated, the product of the second linear regression coefficient corresponding to the next set initial brightness value and the second linear regression coefficient corresponding to the previous set initial brightness value is compared with the first threshold value, and the optimal initial brightness value is determined.
Specifically, different initial brightness values are set, and corresponding second linear regression coefficients are calculated according to the different set initial brightness values, wherein the product of the second linear regression coefficient corresponding to the next set initial brightness value and the second linear regression coefficient corresponding to the previous set initial brightness value is closer to 1, the closer the second linear regression coefficient corresponding to the next set initial brightness value is to the maximum value, the closer the next set initial brightness value is to the optimal initial brightness. For example, a plurality of different initial brightness values L '(0) may be set at a time, and as L' (0) may be set, 398nit, 402nit, 399nit and 401nit may be sequentially taken, and each of the second linear regression coefficients [ R ] may be calculated2(a)]'and the initial luminance value L' (0) set later is set to 402nit corresponding to the second linear regression coefficient [ R ]2(a)]'the product M of the second linear regression coefficients corresponding to the previously set initial luminance value L' (0) ═ 398nit is compared with a first threshold value of 0.9999, and if M is 0.9999 or more, the next set initial luminance value L '(0) ═ 402nit is determined to be the optimum initial luminance value L' (0) ═ 402nitm(0) (ii) a If M is less than 0.9999, thenThe calculation is continued by setting the initial luminance value L' (0) set next to 399nit corresponding to the second linear regression coefficient [ R ]2(a)]The product M 'of the second linear regression coefficient corresponding to the previous set initial luminance value L' (0) ═ 402nit is compared with the first threshold value 0.9999, and so on until the product of the next set initial luminance value and the second linear regression coefficient corresponding to the previous set initial luminance value is greater than the first threshold value.
It should be noted that the initial brightness value may also be set in real time according to a relationship between a product of a second linear regression coefficient corresponding to a next set initial brightness value and a second linear regression coefficient corresponding to a previous set initial brightness value and a first threshold, so as to obtain an optimal initial brightness value L as soon as possiblem(0)。
Optionally, performing brightness compensation according to the optimal brightness decay fitting curve and the display panel lighting time, includes: determining a pre-display brightness value corresponding to the lighting time of the display panel according to the optimal brightness attenuation fitting curve; determining an efficiency value of the display panel according to the pre-display brightness value and the optimal initial brightness value; and determining the driving current of the display panel according to the efficiency value of the display panel.
Specifically, the lighting time of the display panel is T, the pre-display brightness corresponding to the lighting time T of the display panel is obtained according to the optimal brightness decay fitting curve, and as the display panel is driven by a constant current, the relationship between the pre-display brightness corresponding to the lighting time T of the display panel and the optimal initial brightness value is consistent with the luminous efficiency of the display panel, namely L (T)/Lm(0) The pre-display luminance corresponding to the known lighting time T is the efficiency of the display panel corresponding to the known lighting time T, and the driving current is increased to the original L (0)/L according to the relationship between the luminous efficiency and the driving currentm(0) The brightness of the display panel returns to the optimal initial brightness value Lm(0)。
Fig. 2 is a schematic structural diagram of a luminance compensation apparatus of a display panel according to an embodiment of the present invention. Referring to fig. 2, the brightness compensation apparatus 20 of the display panel provided in the present embodiment includes: a brightness value obtaining module 21, a fitting curve obtaining module 22, a fitting curve optimizing module 23 and a brightness compensation module 25.
A brightness value obtaining module 21, configured to obtain brightness values at multiple different time instants.
And a fitting parameter obtaining module 22, configured to determine a brightness attenuation fitting parameter according to the brightness values at the multiple different time instants and the brightness attenuation formula.
And the fitting curve optimization module 23 is configured to reset the initial brightness value, and determine an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter.
And the brightness compensation module 24 is configured to perform brightness compensation according to the optimal brightness decay fitting curve and the display panel lighting time.
Optionally, fig. 3 is a schematic structural diagram of another brightness compensation apparatus for a display panel according to an embodiment of the present invention. Referring to fig. 3, the fitting curve optimization module 23 includes: an optimal initial brightness value determining unit 231 and a fitting curve generating unit 232, wherein the optimal initial brightness value determining unit is configured to determine an optimal initial brightness value according to the brightness attenuation fitting parameter and a set initial brightness value; and the fitting curve generating unit is used for determining an optimal brightness attenuation fitting curve according to the optimal initial brightness value and the brightness attenuation fitting parameter.
The initial brightness value is reset according to the scheme of the embodiment, the brightness deviation of the display panel at the initial lighting moment can be compensated, the obtained optimal brightness attenuation fitting curve is more consistent with the actual brightness attenuation rule of the display panel, the threshold voltage of the thin film transistor does not need to be measured when the display panel is compensated, the brightness compensation value can be determined directly according to the lighting time of the display panel and the optimal brightness attenuation fitting curve, the compensation speed is higher, and the brightness attenuation of the display panel can be compensated accurately in real time.
The brightness compensation device of the display panel provided by the embodiment of the invention and the brightness compensation method of the display panel provided by any embodiment of the invention belong to the same inventive concept, and have corresponding beneficial effects.
Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention. Referring to fig. 4, a display device 40 according to an embodiment of the present invention includes a display panel and the luminance compensation device 20 of the display panel according to any of the embodiments described above.
Specifically, as shown in fig. 4, the display device 40 provided in the embodiment of the present invention includes the display panel luminance compensation device 20 provided in any of the embodiments, and has the beneficial effects of the display panel luminance compensation device 20 provided in the embodiments, which are not described herein again. Illustratively, the display device 20 may be a display device such as a mobile phone, a wearable apparatus having a display function, a computer, or the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for compensating brightness of a display panel, comprising:
acquiring brightness values at a plurality of different moments;
determining a brightness attenuation fitting parameter according to the brightness values at the different moments and a brightness attenuation formula;
resetting the initial brightness value, and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter;
and performing brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel.
2. The method of claim 1, wherein determining a brightness decay fitting parameter according to the brightness values at the plurality of different time instances and a brightness decay formula comprises:
converting the brightness attenuation formula into a linear equation;
determining linear regression solutions and linear regression coefficients of different parameters in the brightness attenuation formula according to brightness values at different moments except the initial moment and the linear equation;
and calculating a first linear regression coefficient according to the acquired brightness value corresponding to the initial moment and the linear regression coefficient.
3. The method of claim 2, wherein resetting the initial brightness value and determining an optimal brightness decay fitting curve according to the set initial brightness value and the brightness decay fitting parameters comprises:
determining an optimal initial brightness value according to the brightness attenuation fitting parameter and a set initial brightness value;
and determining an optimal brightness attenuation fitting curve according to the optimal initial brightness value and the brightness attenuation fitting parameter.
4. The method of claim 3, wherein determining an optimal initial brightness value according to the brightness decay fitting parameter and the set initial brightness value comprises:
setting an initial brightness value according to the brightness value corresponding to the acquired initial time, wherein the set initial brightness value is valued near the brightness value corresponding to the initial time;
determining a second linear regression coefficient according to the set initial brightness value and the linear regression coefficient;
and determining an optimal initial brightness value according to the first linear regression coefficient and the second linear regression coefficient.
5. The method of claim 4, wherein determining an optimal initial brightness value based on the first linear regression coefficient and the second linear regression coefficient comprises:
and if the product of the first linear regression coefficient and the second linear regression coefficient is greater than or equal to a first threshold value, the set initial brightness value corresponding to the second linear regression coefficient is the optimal initial brightness.
6. The method of claim 5, wherein determining an optimal initial brightness value based on the first linear regression coefficient and the second linear regression coefficient comprises:
if the product of the first linear regression coefficient and the second linear regression coefficient is smaller than a first threshold value, different initial brightness values are set, a second linear regression coefficient corresponding to each set initial brightness value is calculated, the product of the second linear regression coefficient corresponding to the next set initial brightness value and the second linear regression coefficient corresponding to the previous set initial brightness value is compared with the first threshold value, and the optimal initial brightness value is determined.
7. The method of claim 1, wherein the performing the brightness compensation according to the optimal brightness decay fitting curve and the display panel lighting time comprises:
determining a pre-display brightness value corresponding to the lighting time of the display panel according to the optimal brightness attenuation fitting curve;
determining an efficiency value of the display panel according to the pre-display brightness value and the optimal initial brightness value;
and determining the driving current of the display panel according to the efficiency value of the display panel.
8. A luminance compensation apparatus of a display panel, comprising:
the brightness value acquisition module is used for acquiring brightness values at a plurality of different moments;
the fitting parameter obtaining module is used for determining a brightness attenuation fitting parameter according to the brightness values at the different moments and a brightness attenuation formula;
the fitting curve optimization module is used for resetting the initial brightness value and determining an optimal brightness attenuation fitting curve according to the set initial brightness value and the brightness attenuation fitting parameter;
and the brightness compensation module is used for performing brightness compensation according to the optimal brightness attenuation fitting curve and the lighting time of the display panel.
9. The apparatus of claim 8, wherein the fitting curve optimization module comprises:
the optimal initial brightness value determining unit is used for determining an optimal initial brightness value according to the brightness attenuation fitting parameter and a set initial brightness value;
and the fitting curve generating unit is used for determining an optimal brightness attenuation fitting curve according to the optimal initial brightness value and the brightness attenuation fitting parameter.
10. A display device characterized by comprising a display panel and a luminance compensation device of the display panel according to any one of claims 8 to 9.
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| CN113628575A (en) * | 2021-08-11 | 2021-11-09 | 昆山国显光电有限公司 | Brightness compensation method, brightness compensation device and brightness compensation system of display panel |
| CN114299877A (en) * | 2021-12-29 | 2022-04-08 | 云谷（固安）科技有限公司 | Brightness compensation method and system of display panel |
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