Display panel, brightness adjusting method thereof and display device
By collecting the brightness data of the display panel, the Gamma curve is generated, and the Gamma voltage at abnormal grayscale binding points is identified and corrected, the problem of inaccurate Gamma adjustment is solved, and the smooth transition of the Gamma curve and the accuracy of brightness is improved.
Patent Information
- Application Number
- CN202510896567.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-08-29
AI Technical Summary
In the prior art, the inaccurate adjustment of Gamma results in abnormalities in some grayscale binding points, and the Gamma curve is unstable, affecting the display effect.
Collect the display panel brightness data, generate the first Gamma curve, identify abnormal grayscale binding points, calculate the target Gamma voltage and write it to the register for correction.
The corrected Gamma curve smoothly transitions between adjacent binding points, and the adjacent grayscale transitions are natural, which significantly reduces brightness jumps and improves display visual quality and brightness accuracy.
Smart Images
Figure CN120564589A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a brightness adjustment method thereof, and a display device. Background Art
[0002] With the advancement of display technology, various industries are placing increasingly higher demands on display products. To improve the visual quality of display products, gamma adjustment is performed on display panels. However, inaccurate gamma adjustment in related technologies can lead to abnormal grayscale binding points, an unstable gamma curve, and poor display quality.
[0003] Therefore, how to improve the above problems has become one of the technical problems that need to be solved urgently at this stage. Summary of the Invention
[0004] In order to solve the above technical problems, the present disclosure provides a display panel, a brightness adjustment method thereof, and a display device.
[0005] In one aspect, the present disclosure provides a method for adjusting the brightness of a display panel, comprising:
[0006] Collect brightness data of the display panel;
[0007] generating a first gamma curve according to the brightness data of the display panel;
[0008] Obtaining abnormal grayscale binding points that need to be adjusted according to the first Gamma curve;
[0009] Calculating the target Gamma voltage of the abnormal grayscale binding point;
[0010] The target Gamma voltage is written into the register of the abnormal grayscale binding point.
[0011] On the other hand, the present disclosure provides a display panel that uses the above-mentioned brightness adjustment method for a display panel to adjust brightness.
[0012] In a third aspect, the present disclosure provides a display device comprising the display panel as described above.
[0013] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:
[0014] The present disclosure provides a display panel, a brightness adjustment method thereof, and a display device. The brightness adjustment method includes: collecting brightness data of the display panel; generating a first gamma curve based on the brightness data of the display panel; obtaining abnormal grayscale binding points that need to be adjusted based on the first gamma curve; calculating target gamma voltages for the abnormal grayscale binding points; and writing the target gamma voltages to registers for the abnormal grayscale binding points. The present disclosure calculates and corrects the gamma voltages of the abnormal grayscale binding points in the first gamma curve, so that the corrected first gamma curve smoothly transitions between adjacent binding points. In this way, the gamma voltages of adjacent grayscale binding points are closer, and the transition between adjacent grayscales is more natural, which is conducive to effectively eliminating or significantly reducing the brightness jump caused by the abnormal grayscale binding points, making the entire gamma curve smoother and more continuous, thereby improving the visual quality of the display, and making the brightness of the display panel closer to the desired brightness, which is conducive to improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0017] Figure 1 FIG2 is a flow chart of a method for adjusting brightness of a display panel provided by an embodiment of the present disclosure;
[0018] Figure 2 FIG. 1 is a schematic diagram of a first Gamma curve provided by an embodiment of the present disclosure;
[0019] Figure 3 FIG. 1 is a schematic diagram of a second Gamma curve provided by an embodiment of the present disclosure;
[0020] Figure 4 FIG2 is a schematic diagram of another first Gamma curve provided by an embodiment of the present disclosure;
[0021] Figure 5 FIG2 is a schematic diagram of another second Gamma curve provided by an embodiment of the present disclosure;
[0022] Figure 6 FIG2 is a flow chart of another method for adjusting brightness of a display panel provided by an embodiment of the present disclosure;
[0023] Figure 7 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure;
[0024] Figure 8 FIG2 is a schematic diagram of another first Gamma curve provided by an embodiment of the present disclosure;
[0025] Figure 9 FIG2 is a schematic diagram of another second Gamma curve provided by an embodiment of the present disclosure;
[0026] Figure 10 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure;
[0027] Figure 11 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure;
[0028] Figure 12 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure;
[0029] Figure 13 Shown is a planar schematic diagram of a display panel provided by an embodiment of the present disclosure. DETAILED DESCRIPTION
[0030] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.
[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0032] Figure 1 FIG. 1 is a flow chart of a method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure. Figure 2 FIG. 1 is a schematic diagram of a first Gamma curve provided by an embodiment of the present disclosure. Figure 3 The figure shows a second Gamma curve diagram provided by the embodiment of the present disclosure. Please refer to Figures 1 to 3 The present disclosure provides a method for adjusting the brightness of a display panel, comprising:
[0033] Step S10: collecting brightness data of the display panel;
[0034] Step S20: generating a first gamma curve according to the brightness data of the display panel;
[0035] Step S30: Obtaining abnormal grayscale binding points that need to be adjusted according to the first Gamma curve;
[0036] Step S40, calculating the target Gamma voltage of the abnormal grayscale binding point;
[0037] Step S50: writing the target Gamma voltage into the register of the abnormal grayscale binding point.
[0038] It should be noted that the present disclosure provides a method for adjusting the brightness of a display panel, including but not limited to steps S10 to S50. Figure 2 A schematic diagram of a first Gamma curve is provided. Figure 3 The Gamma curve shown in is Figure 2 The first Gamma curve in the Gamma curve is a Gamma curve after adjusting the initial Gamma voltage of the abnormal grayscale binding point (hereinafter also referred to as the second Gamma curve), Figure 2 and Figure 3 In the graph shown, the horizontal axis represents grayscale, optionally, the horizontal axis value is an integer between 0 and 255, or an integer between 0 and 1023, and the vertical axis represents the Gamma voltage. The initial Gamma voltage in the present disclosure represents the Gamma voltage before the abnormal grayscale binding point is adjusted. Figure 2 The middle dotted box shows the abnormal grayscale binding point in the first Gamma curve. It can be seen that the initial Gamma voltage of the abnormal grayscale binding point is significantly higher than that of the adjacent grayscale binding points. The adjustment method of the display panel provided by the present invention can be used to adjust the initial Gamma voltage of the abnormal grayscale binding point, thereby making the adjusted first Gamma curve smoother.
[0039] Specifically, the brightness adjustment method of the display panel provided by the present disclosure is used to adjust the initial Gamma voltage of the abnormal grayscale binding point of the Gamma curve. In step S10, the brightness data of the display panel is collected, and the brightness data is used to generate the Gamma curve. This is conducive to directly obtaining the true brightness response characteristics of the current display panel. On this basis, in step S20, a first Gamma curve is generated according to the acquired brightness data, which provides a more realistic starting point for the subsequent brightness adjustment, and is conducive to improving the authenticity and accuracy of the Gamma voltage of each grayscale binding point. When the initial Gamma voltage of the abnormal grayscale binding point is subsequently adjusted and optimized, it is conducive to improving the accuracy of the Gamma correction, thereby improving the brightness display effect of the display panel. In step S30, according to the first Gamma curve generated in step S20, the abnormal grayscale binding point that needs to be adjusted is obtained. It should be noted that the abnormal grayscale binding point can be regarded as a grayscale binding point whose brightness value does not match the expected Gamma curve, which will cause the image to have a sudden change in brightness in a specific grayscale area. Optionally, the abnormal grayscale binding point includes a convex point (such as Figure 2 The abnormal grayscale binding point (shown in the dashed box) and the concave point are shown. It should be noted that a convex point refers to an abnormal grayscale binding point whose initial gamma voltage is significantly higher than the gamma voltages of the grayscale binding points on either side, and a concave point refers to an abnormal grayscale binding point whose initial gamma voltage is significantly lower than the gamma voltages of the grayscale binding points on either side. In step S40, the gamma voltage of the abnormal grayscale binding point is recalculated, and the recalculated gamma voltage is used as the target gamma voltage for the abnormal grayscale binding point. In step S50, the target gamma voltage is written into the register of the abnormal grayscale binding point.
[0040] It should be noted that Figure 2 The abnormal grayscale binding point is only used as a convex point for illustration, but the present invention is not limited thereto. In some other embodiments, the abnormal grayscale binding point may also be a concave point. Figure 4 FIG. 1 is a schematic diagram of another first Gamma curve provided by an embodiment of the present disclosure. Figure 5 FIG2 is a schematic diagram of another second Gamma curve provided by an embodiment of the present disclosure, please refer to FIG2 Figure 4 and Figure 5 , Figure 4 The dotted box shows an abnormal grayscale binding point as a concave point. Figure 5 The Gamma curve shown in is Figure 4 The first gamma curve in is the gamma curve after adjusting the initial gamma voltage of the abnormal grayscale binding point.
[0041] In related technologies, after the first Gamma curve is calculated, only the Gamma range can be controlled. The Gamma range is exemplified by the dotted ranges of 2.0 and 2.4 corresponding to the vertical axis in the figure. The fluctuation of the Gamma curve cannot be actually monitored. Therefore, the first Gamma curve may have abnormal grayscale binding points.
[0042] The present disclosure calculates and corrects the Gamma voltage of the abnormal grayscale binding point in the first Gamma curve, so that the corrected first Gamma curve transitions smoothly between adjacent binding points. In this way, the Gamma voltages of adjacent grayscale binding points are closer, and the transition between adjacent grayscales is more natural, which is conducive to effectively eliminating or significantly reducing the brightness jump caused by the abnormal grayscale binding point, making the entire Gamma curve smoother and more continuous, thereby improving the visual quality of the display, and the brightness of the display panel is closer to the expected brightness, which is conducive to improving the display effect.
[0043] In addition, it should be noted that the display panel adjustment method provided by the present disclosure can be adjusted separately for different display panels, by collecting the brightness of the display panel to generate brightness parameters, generating a corresponding first Gamma curve based on the brightness parameters, identifying abnormal grayscale binding points (convex points and concave points) in the first Gamma curve, recalculating and adjusting the Gamma voltage of the abnormal grayscale binding point, and writing the adjusted target Gamma voltage into the corresponding register. The present disclosure performs targeted adjustment on the display panel. The Gamma values between different display panels may be different, which is conducive to automatically adjusting the Gamma voltage and improving the degree of automation of the Gamma voltage adjustment. The adjusted Gamma voltage is more matched with the corresponding display panel, which is also more conducive to improving the image quality of the display panel and improving the display effect. Compared with the method of adjusting the fixed Gamma (i.e., each display panel shares a set of Gamma), the present disclosure can optimize the binding point voltage by secondary calculation under the condition of adopting Auto Gamma (i.e., each display panel is adjusted in a targeted manner, and the Gamma value of each display panel is different).
[0044] Figure 6 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure. Figure 6 In an optional embodiment of the present disclosure, before calculating the target Gamma voltage of the abnormal grayscale binding point in step S40, the brightness adjustment method further includes: step S31, obtaining a first grayscale binding point and a second grayscale binding point corresponding to the abnormal grayscale binding point; wherein the first grayscale binding point and the second grayscale binding point are respectively located on both sides of the abnormal grayscale binding point, and are both adjacent to the abnormal grayscale binding point.
[0045] Specifically, the present disclosure adjusts and optimizes the initial Gamma voltage of the abnormal grayscale binding point to improve the smoothness of the first Gamma curve and make the transition between adjacent grayscales more natural. Therefore, this embodiment obtains the first grayscale binding point and the second grayscale binding point adjacent to the abnormal grayscale binding point, which is used to subsequently recalculate the initial Gamma voltage of the abnormal grayscale binding point based on the Gamma voltage of the first grayscale binding point and the Gamma voltage of the second grayscale binding point.
[0046] For further information, please refer to Figure 6 In an optional embodiment of the present disclosure, step S40 of calculating the target gamma voltage of the abnormal grayscale binding point includes calculating the target gamma voltage according to a calculation formula: C = (A + B) ÷ 2; where A represents the gamma voltage of the first grayscale binding point, B represents the gamma voltage of the second grayscale binding point, and C represents the target gamma voltage of the abnormal grayscale binding point.
[0047] Specifically, in this embodiment, a first grayscale binding point and a second grayscale binding point adjacent to the abnormal grayscale binding point are obtained, and a target gamma voltage C of the abnormal grayscale binding point is calculated based on the gamma voltage A of the first grayscale binding point and the gamma voltage B of the second grayscale binding point. The calculation formula is C = (A + B) ÷ 2. That is, the average of the gamma voltage A of the first grayscale binding point and the gamma voltage B of the second grayscale binding point is taken as the target gamma voltage C of the abnormal grayscale binding point. This embodiment corrects the gamma voltage of the abnormal grayscale binding point based on adjacent grayscale binding points, which is equivalent to locally smoothing and correcting the abnormal grayscale binding point. This configuration makes the gamma voltage transitions corresponding to the first grayscale binding point, the abnormal grayscale binding point, and the second grayscale binding point smoother and more natural, effectively eliminating or significantly reducing the brightness jump caused by the abnormal grayscale binding point, making the entire gamma curve smoother and more continuous, thereby improving the visual quality of the image and enhancing the display effect.
[0048] Exemplarily, the initial Gamma voltage of the abnormal grayscale binding point is 2.3, the Gamma voltage A of the first grayscale binding point is 2.2, the Gamma voltage B of the second grayscale binding point is 2.2, and the target Gamma voltage C of the abnormal grayscale binding point is (2.1+2.3) / 2=2.2. In this way, a smooth transition is achieved among the first grayscale binding point, the abnormal grayscale binding point and the second grayscale binding point, so as to improve the problem of sudden brightness change during display, thereby improving the display effect.
[0049] Figure 7 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure. Figure 7In an optional embodiment of the present disclosure, before calculating the target Gamma voltage of the abnormal grayscale binding point in step S40, the brightness adjustment method further includes: step S32, obtaining a third grayscale binding point and a fourth grayscale binding point corresponding to the abnormal grayscale binding point, wherein the third grayscale binding point is located on a side of the first grayscale binding point away from the abnormal grayscale binding point, and the fourth grayscale binding point is located on a side of the second grayscale binding point away from the abnormal grayscale binding point, and the number of binding points between the third grayscale binding point and the abnormal grayscale binding point is equal to the number of binding points between the fourth grayscale binding point and the abnormal grayscale binding point.
[0050] Specifically, in order to calculate the target Gamma voltage of the abnormal grayscale binding point, the present embodiment obtains four grayscale binding points, namely the first grayscale binding point and the second grayscale binding point adjacent to the abnormal grayscale binding point, and the third grayscale binding point and the fourth grayscale binding point not adjacent to the abnormal grayscale binding point. With such a setting, when subsequently calculating the target Gamma voltage of the abnormal grayscale binding point, the grayscale binding points (the third grayscale binding point and the fourth grayscale binding point) farther away from the abnormal grayscale binding point are introduced. On the basis of achieving a correction for the smooth transition of the Gamma curve, it is also beneficial to achieve a correction of the abnormal grayscale binding point to be more in line with the overall curve trend, which is beneficial to better adapt to and correct more complex or variable panel brightness characteristics, further beneficial to the smoothness, accuracy and adaptability of the Gamma curve, and more beneficial to improving display quality and display effects.
[0051] For further information, please refer to Figure 7 In an optional embodiment of the present disclosure, step S40, calculating the target Gamma voltage of the abnormal grayscale binding point, includes: calculating the target Gamma voltage according to a calculation formula; the calculation formula is: C = ((A-|X1|)+(B+|X2|))÷2; wherein A represents the Gamma voltage of the first grayscale binding point, B represents the Gamma voltage of the second grayscale binding point, C represents the target Gamma voltage of the abnormal grayscale binding point, X1 represents the Gamma voltage of the third grayscale binding point, and X2 represents the Gamma voltage of the fourth grayscale binding point.
[0052] Specifically, the target gamma voltage calculation formula provided in this embodiment calculates the target gamma voltage C for abnormal grayscale binding points based on the gamma voltage A of the first grayscale binding point, the gamma voltage B of the second grayscale binding point, the gamma voltage X1 of the third grayscale binding point, and the gamma voltage X2 of the fourth grayscale binding point using the formula C = ((A-|X1|)+(B+|X2|))÷2. This calculation method incorporates the gamma voltages of grayscale binding points adjacent to the abnormal grayscale binding point, which helps improve the smoothness of the gamma curve. It also incorporates the gamma voltages of grayscale binding points located symmetrically on both sides of the abnormal grayscale binding point, facilitating correction of abnormal grayscale binding points to better align with the overall curve trend. This, in turn, helps better adapt to and correct for more complex or variable panel brightness characteristics, further improving the smoothness, accuracy, and adaptability of the gamma curve, and further enhancing display quality and performance.
[0053] For example, the gamma voltage A of the first grayscale binding point is 2.15, the gamma voltage B of the second grayscale binding point is 2.2, the gamma voltage X1 of the third grayscale binding point is 2.15, the gamma voltage X2 of the fourth grayscale binding point is 2.2, and the target gamma voltage C of the abnormal grayscale binding point is (2.15-|2.15|)+(2.2+|2.2|)÷2=2.2.
[0054] Please continue to refer to Figure 7, in an optional implementation manner of the present disclosure, the number of binding points between the third grayscale binding point or the fourth grayscale binding point and the abnormal grayscale binding point is x, the number of binding points between the abnormal grayscale binding point and the minimum grayscale binding point is m, and the number of binding points between the abnormal grayscale binding point and the maximum grayscale binding point is n. x < m and x < n. This implementation manner restricts the ranges of the third grayscale binding point and the fourth grayscale binding point, which is beneficial to ensuring that the third grayscale binding point and the fourth grayscale binding point used to correct the abnormal grayscale binding point are within the effective range of the grayscale range, and is beneficial to improving the effectiveness of data. It should be noted that the grayscale range has a minimum grayscale (usually 0) and a maximum grayscale (for example, 255 for 8 bits and 1023 for 10 bits). If the third grayscale binding point or the fourth grayscale binding point exceeds this range or is very close to the range edge, it may be impossible to obtain effective data or the obtained data is inaccurate, affecting the accuracy of the target Gamma voltage of the abnormal grayscale binding point. Therefore, the present disclosure sets the number of binding points x between the third grayscale binding point or the fourth grayscale binding point and the abnormal grayscale binding point to be less than the number of binding points m between the abnormal grayscale binding point and the minimum grayscale binding point; and the number of binding points x between the third grayscale binding point or the fourth grayscale binding point and the abnormal grayscale binding point is less than the number of binding points n between the abnormal grayscale binding point and the maximum grayscale binding point. No matter where the abnormal grayscale binding point is located in the grayscale range (in the middle, to the left or to the right), symmetric and effective third grayscale binding point and fourth grayscale binding point can be guaranteed to be found on both sides of it, which is beneficial to improving the accuracy of the target Gamma voltage calculation.
[0055] Please continue to refer to Figure 7 , in an optional implementation manner of the present disclosure, both the third grayscale binding point and the fourth grayscale binding point are binding points with normal Gamma voltages. The present disclosure calculates the target Gamma voltage of the abnormal grayscale binding point based on the Gamma voltages corresponding to the first grayscale binding point, the second grayscale binding point, the third grayscale binding point, and the fourth grayscale binding point. If the Gamma voltage of the corresponding binding point used to correct the abnormal binding point is abnormal, it may affect the accuracy of the finally calculated target Gamma voltage. For the first grayscale binding point and the second grayscale binding point, even if the first grayscale binding point and the second grayscale binding point are abnormal binding points, it will not have a great impact on the smoothness of the first grayscale binding point, the abnormal grayscale binding point, and the second grayscale binding point. Therefore, at least ensuring that the third grayscale binding point and the fourth grayscale binding point are normal binding points is set in this way, which is beneficial to avoiding the calculated target Gamma voltage from deviating from the overall trend of the Gamma curve and is more beneficial to improving the accuracy of the target Gamma voltage calculation.
[0056] Figure 8 The figure shows a schematic diagram of another first Gamma curve provided by an embodiment of the present disclosure. Figure 9 The figure shows a schematic diagram of another second Gamma curve provided by an embodiment of the present disclosure. Please refer to Figures 7 to 9In an optional embodiment of the present disclosure, the abnormal grayscale binding point includes a first abnormal binding point and a second abnormal binding point, and the first abnormal binding point and the second abnormal binding point are adjacent. It should be noted that, Figure 8 Three abnormal grayscale binding points are shown in the dotted box. The present disclosure does not specifically limit which one is the first abnormal binding point and which one is the second abnormal binding point. The present disclosure distinguishes the first abnormal binding point and the second abnormal binding point only to illustrate that the first abnormal binding point and the second abnormal binding point are adjacent abnormal grayscale binding points.
[0057] When adjacent grayscale binding points appear, before calculating the target gamma voltage of the abnormal grayscale binding point in step S40, the brightness adjustment method further includes: respectively obtaining a first grayscale binding point, a second grayscale binding point, a third grayscale binding point, and a fourth grayscale binding point corresponding to the first abnormal binding point and the second abnormal binding point.
[0058] Step S40, calculating the target gamma voltage of the abnormal grayscale binding point, including: calculating the target gamma voltage of the first abnormal binding point and the second abnormal binding point according to a calculation formula; the calculation formula is: C = ((A-|X1|)+(B+|X2|))÷2; where A represents the gamma voltage of the first grayscale binding point, B represents the gamma voltage of the second grayscale binding point, C represents the target gamma voltage of the abnormal grayscale binding point, X1 represents the gamma voltage of the third grayscale binding point, and X2 represents the gamma voltage of the fourth grayscale binding point.
[0059] Specifically, the Gamma curve anomaly in the display panel may not be a single isolated grayscale binding point, and there may be several consecutive grayscale binding points in a certain area that have deviations. This embodiment provides a method for calculating the target Gamma voltage when the abnormal grayscale binding points are adjacent. The first abnormal binding point and the second abnormal binding point are adjacent abnormal grayscale binding points. The present disclosure processes the first abnormal binding point and the second abnormal binding point separately, obtains the four grayscale binding points (first grayscale binding point, second grayscale binding point, third grayscale binding point and fourth grayscale binding point) corresponding to the target Gamma voltage, and independently applies the calculation formula to calculate the target Gamma voltage of the first abnormal binding point and the target Gamma voltage of the second abnormal binding point. With this arrangement, even if the first abnormal binding point and the second abnormal binding point are adjacent, their target Gamma voltages are calculated based on their corresponding four grayscale binding points, which is beneficial to calibrate and correct each abnormal grayscale binding point, thereby achieving a smoother and more natural brightness transition, which in turn is beneficial to improving the quality of the displayed image and improving the display effect.
[0060] Figure 10 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure. Figure 10In an optional embodiment of the present disclosure, before calculating the target Gamma voltage of the abnormal grayscale binding point in step S40, the brightness adjustment method further includes: step S33, obtaining the fifth grayscale binding point and the sixth grayscale binding point corresponding to the abnormal grayscale binding point; wherein the fifth grayscale binding point and the sixth grayscale binding point are respectively located on both sides of the abnormal grayscale binding point.
[0061] Specifically, this embodiment obtains a fifth grayscale binding point and a sixth grayscale binding point located on either side of the abnormal grayscale binding point, and uses these points to subsequently calculate a target gamma voltage at the abnormal grayscale binding point based on the gamma voltage of the fifth grayscale binding point and the gamma voltage of the sixth grayscale binding point. The selection of the fifth grayscale binding point and the sixth grayscale binding point is not limited to being adjacent to the abnormal grayscale binding point; the fifth grayscale binding point and the sixth grayscale binding point are relatively far away from the abnormal grayscale binding point. This facilitates correcting the gamma voltage at the abnormal grayscale binding point based on the true trend of at least one segment of the first gamma curve, thereby facilitating the gamma voltage at the abnormal grayscale binding point, after correction, to be roughly similar to the alignment trend of the first gamma curve, making the gamma curve more coherent and natural, thereby facilitating improved image quality and display effects.
[0062] Please continue to refer to Figure 10 In one optional embodiment of the present disclosure, the number of binding points between the fifth grayscale binding point and the abnormal grayscale binding point is equal to the number of binding points between the sixth grayscale binding point and the abnormal grayscale binding point. Specifically, the fifth grayscale binding point and the sixth grayscale binding point are symmetrically located on either side of the abnormal grayscale binding point. Subsequently, when the target gamma voltage of the abnormal grayscale binding point is calculated based on the gamma voltage of the fifth grayscale binding point and the gamma voltage of the sixth grayscale binding point, this helps balance the curve trends on both sides of the abnormal grayscale binding point, thereby facilitating a smooth transition of the first gamma curve, thereby improving the quality of displayed images and enhancing the display effect.
[0063] Please continue to refer to Figure 10In an optional embodiment of the present disclosure, the number of binding points between the fifth grayscale binding point and the abnormal grayscale binding point is not equal to the number of binding points between the sixth grayscale binding point and the abnormal grayscale binding point. In this embodiment, the fifth grayscale binding point and the sixth grayscale binding point are located on both sides of the abnormal grayscale binding point, but are not limited to being symmetrically distributed on both sides of the abnormal grayscale binding point. Such a setting is conducive to more flexible adaptation to the asymmetric curve trend near the abnormal grayscale binding point. For example, if the curve on the right side of the abnormal grayscale binding point changes dramatically, while the left side is relatively flat, when obtaining the fifth grayscale binding point and the sixth grayscale binding point, the right side of the abnormal grayscale binding point can select a grayscale binding point farther away from it, while the left and right sides of the abnormal grayscale binding point do not need to select grayscale binding points farther away from it. In this way, it is more conducive to accurately fitting the actual panel characteristics, thereby facilitating the smooth transition of the first Gamma curve, and further facilitating the improvement of the quality of the displayed image and the display effect. In addition, when the abnormal grayscale binding point is close to the edge of the grayscale range, due to the limited available points on the other side, it may be necessary to select a grayscale binding point farther away from the abnormal grayscale binding point on the side far from the edge to provide sufficient trend information, which is more conducive to processing edges or other complex situations.
[0064] Please continue to refer to Figure 10 In an optional embodiment of the present disclosure, step S40, calculating the target Gamma voltage of the abnormal grayscale binding point, includes: calculating the target Gamma voltage according to a calculation formula; the calculation formula is: C = (E + F) ÷ 2; wherein E represents the Gamma voltage of the fifth grayscale binding point, F represents the Gamma voltage of the sixth grayscale binding point, and C represents the target Gamma voltage of the abnormal grayscale binding point.
[0065] This embodiment provides a calculation formula (C = (E + F) ÷ 2) for calculating the target gamma voltage C of the abnormal grayscale binding point based on the gamma voltage E of the fifth grayscale binding point and the gamma voltage F of the sixth grayscale binding point. That is, the target gamma voltage C of the abnormal grayscale binding point is calculated by taking the average of the gamma voltages E and F of the fifth and sixth grayscale binding points. This calculation method simplifies the calculation process and helps reduce the computational load. Furthermore, the fifth and sixth grayscale binding points are relatively far from the abnormal grayscale binding point and are therefore more representative of the overall trend of the first gamma curve. This helps avoid the influence of other abnormal grayscale binding points when calculating the target gamma voltage of the abnormal grayscale binding point, improves the accuracy of the target gamma voltage, and facilitates a smoother transition of the first gamma curve that is more consistent with the overall trend, thereby improving the quality of displayed images and enhancing the display effect.
[0066] Please refer to Figure 1In an optional embodiment of the present disclosure, the method for obtaining the abnormal grayscale binding point that needs to be adjusted in step S30 includes: obtaining multiple abnormal grayscale binding points; step S40, calculating the target Gamma voltage of the abnormal grayscale binding point, including: simultaneously calculating the target Gamma voltage corresponding to multiple abnormal grayscale binding points.
[0067] Specifically, the first gamma curve may contain multiple abnormal grayscale binding points. If only one abnormal grayscale binding point can be processed at a time, processing time will increase significantly when a large number of abnormal grayscale binding points need to be corrected. This embodiment can simultaneously calculate the target gamma voltage for multiple abnormal grayscale binding points, which helps reduce calculation time and improve calibration efficiency. Furthermore, for multiple consecutive abnormal binding points, simultaneous calculation facilitates more efficient processing of these abnormal points, eliminating the need to split them into individual tasks, which facilitates smooth calibration completion.
[0068] Please continue to refer to Figure 1 In an optional embodiment of the present disclosure, the method for obtaining the abnormal grayscale binding point that needs to be adjusted in step S30 includes: determining the abnormal grayscale binding point according to the fluctuation range.
[0069] Specifically, the identification of traditional abnormal binding points may rely on experience or manual visual inspection. These judgment methods are highly subjective, inefficient, and may not be accurate enough. The present disclosure provides an objective and quantitative judgment standard by setting a fluctuation range. If the Gamma voltage of a grayscale binding point exceeds the fluctuation range, the binding point is considered to be an abnormal grayscale binding point. Such a setting is conducive to improving the accuracy and efficiency of identifying abnormal grayscale binding points. In addition, different types of display panels may have different fluctuation levels in the corresponding generated first Gamma curve. The embodiment of the present disclosure can set the fluctuation range according to the type of different display panels. This is conducive to adapting to a variety of display panels and improving applicability.
[0070] Figure 11 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure. Figure 1 and Figure 11 ,It should be noted that, for the sake of clarity, Figure 11 Only step S60 and the steps thereafter are shown. For the steps before step S60, please refer to Figure 1 In an optional embodiment of the present disclosure, step S40, calculating the target gamma voltage of the abnormal grayscale binding point, includes: calculating the target gamma voltage of the abnormal grayscale binding point according to a calculation formula; after step S50, writing the target gamma voltage to the register of the abnormal grayscale binding point, the brightness adjustment method further includes:
[0071] Step S60: generating a second Gamma curve;
[0072] Step S70: Determine whether the adjusted Gamma voltage of the abnormal grayscale binding point satisfies a calculation formula according to the second Gamma curve.
[0073] Specifically, this embodiment introduces a verification method after adjusting the abnormal grayscale binding point, specifically, identifying the abnormal grayscale binding point according to the first Gamma curve, correcting the Gamma voltage of the abnormal grayscale binding point, and rewriting the corresponding register, and regenerating the corrected second Gamma curve according to the corrected Gamma voltage (such as Figure 3 、 Figure 5 as well as Figure 9 The gamma curves shown are all second gamma curves generated after adjusting the gamma voltage at the abnormal grayscale binding point and writing it into the register. Verifying whether the actual gamma voltage at the adjusted abnormal grayscale binding point meets expectations helps prevent problems with the corrected gamma voltage during the register writing process, which could affect the final display effect. This disclosure creates a closed-loop feedback loop by generating and verifying the second gamma curve, which helps improve the accuracy and stability of gamma voltage correction.
[0074] The present disclosure provides an optional implementation method, which is to continue to execute subsequent steps when the Gamma voltage of the adjusted abnormal grayscale binding point satisfies the calculation formula used when calculating the target Gamma voltage in step S40; when the Gamma voltage of the adjusted abnormal grayscale binding point does not satisfy the calculation formula used when calculating the target Gamma voltage in step S40, the target Gamma voltage is discarded and recalculated.
[0075] Please continue to refer to Figure 11 In an optional embodiment of the present disclosure, after determining whether the adjusted Gamma voltage of the abnormal grayscale binding point satisfies the calculation formula, the brightness adjustment method further includes:
[0076] Step S80: Determine whether the Gamma voltage of each grayscale binding point meets the threshold range.
[0077] Specifically, after verifying the adjusted abnormal grayscale binding point, this embodiment also includes verifying the gamma voltage of all grayscale binding points to verify whether the gamma voltage of each grayscale binding point is within a preset threshold range. For example, it is determined whether the gamma voltage of each grayscale binding point is within the range of 2-2.4. It should be noted that the correction and verification of abnormal grayscale binding points is conducive to a smooth transition of the first gamma curve, but it cannot guarantee that all grayscale binding points are within the threshold range. Therefore, this embodiment adds verification of whether each grayscale binding point meets the threshold range, which is conducive to ensuring the brightness accuracy and consistency of each grayscale binding point, and thus helps improve the display effect of the display panel.
[0078] The present disclosure provides an optional implementation method, in which when the Gamma voltage of a grayscale binding point does not meet the threshold range, the data is discarded and the brightness is re-adjusted; when the Gamma voltage of each grayscale binding point meets the threshold range, the subsequent steps are continued.
[0079] Figure 12 FIG2 is a flow chart of another method for adjusting the brightness of a display panel provided by an embodiment of the present disclosure. Figure 12 In an optional embodiment of the present disclosure, the brightness adjustment method further includes: step S90, driving the display panel according to the adjusted gamma voltage. The present disclosure collects brightness data of the display panel to generate a first gamma curve, corrects and adjusts abnormal grayscale binding points in the first gamma curve, rewrites the data into corresponding registers, and drives the display panel according to the adjusted and optimized gamma voltage. This helps avoid problems such as sudden brightness changes and unnatural transitions caused by abnormal grayscale binding points, thereby helping the displayed image brightness reach a desired value and improving the display quality of the display panel.
[0080] Based on the same inventive concept, the present disclosure provides a display panel. Figure 13 FIG2 is a schematic diagram of a display panel provided by an embodiment of the present disclosure, please refer to FIG2 Figure 3 The display panel 100 adopts the brightness adjustment method of the display panel provided by any embodiment of the present disclosure to adjust the brightness. The display panel includes but is not limited to a liquid crystal display panel, an organic light emitting display panel, and a light emitting diode display panel.
[0081] Based on the same inventive concept, the present disclosure provides a display device comprising the aforementioned display panel. The display device includes but is not limited to electronic devices such as mobile terminals, computers, smart wearable devices (e.g., smart watches), and in-vehicle display devices.
[0082] It can be seen from the above embodiments that the display panel and brightness adjustment method thereof provided by the present disclosure achieve at least the following beneficial effects:
[0083] The present disclosure provides a display panel, a brightness adjustment method thereof, and a display device. The brightness adjustment method includes: collecting brightness data of the display panel; generating a first gamma curve based on the brightness data of the display panel; obtaining abnormal grayscale binding points that need to be adjusted based on the first gamma curve; calculating target gamma voltages for the abnormal grayscale binding points; and writing the target gamma voltages to registers for the abnormal grayscale binding points. The present disclosure calculates and corrects the gamma voltages of the abnormal grayscale binding points in the first gamma curve, so that the corrected first gamma curve smoothly transitions between adjacent binding points. In this way, the gamma voltages of adjacent grayscale binding points are closer, and the transition between adjacent grayscales is more natural, which is conducive to effectively eliminating or significantly reducing the brightness jump caused by the abnormal grayscale binding points, making the entire gamma curve smoother and more continuous, thereby improving the visual quality of the display, and making the brightness of the display panel closer to the desired brightness, which is conducive to improving the display effect.
[0084] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0085] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.
Claims
1. A method for adjusting the brightness of a display panel, characterized in that: Including: Collecting the brightness data of the display panel; Generating a first Gamma curve according to the brightness data of the display panel; Obtaining abnormal gray-scale binding points to be adjusted according to the first Gamma curve; Calculating the target Gamma voltage of the abnormal gray-scale binding points; Writing the target Gamma voltage into the register of the abnormal gray-scale binding points.
2. The method for adjusting the brightness of a display panel according to claim 1, wherein: Before calculating the target Gamma voltage of the abnormal gray-scale binding points, the brightness adjustment method further includes: Obtaining a first gray-scale binding point and a second gray-scale binding point corresponding to the abnormal gray-scale binding point; wherein, the first gray-scale binding point and the second gray-scale binding point are respectively located on both sides of the abnormal gray-scale binding point and are adjacent to the abnormal gray-scale binding point.
3. The method for adjusting the brightness of a display panel according to claim 2, wherein: The calculating the target Gamma voltage of the abnormal gray-scale binding points includes: Calculating the target Gamma voltage according to the calculation formula; The calculation formula is: C = (A + B) ÷ 2; Wherein, A represents the Gamma voltage of the first gray-scale binding point, B represents the Gamma voltage of the second gray-scale binding point, and C represents the target Gamma voltage of the abnormal gray-scale binding point.
4. The method for adjusting the brightness of a display panel according to claim 2, wherein: Before calculating the target Gamma voltage of the abnormal gray-scale binding points, the brightness adjustment method further includes: Obtaining a third gray-scale binding point and a fourth gray-scale binding point corresponding to the abnormal gray-scale binding point, wherein the third gray-scale binding point is located on the side of the first gray-scale binding point away from the abnormal gray-scale binding point, the fourth gray-scale binding point is located on the side of the second gray-scale binding point away from the abnormal gray-scale binding point, and the number of binding points between the third gray-scale binding point and the abnormal gray-scale binding point is equal to the number of binding points between the fourth gray-scale binding point and the abnormal gray-scale binding point.
5. The method for adjusting the brightness of a display panel according to claim 4, wherein: The calculating the target Gamma voltage of the abnormal gray-scale binding points includes: Calculating the target Gamma voltage according to the calculation formula; The calculation formula is: C = ((A - |X1|) + (B + |X2|)) ÷ 2; Wherein, A represents the Gamma voltage of the first gray-scale binding point, B represents the Gamma voltage of the second gray-scale binding point, C represents the target Gamma voltage of the abnormal gray-scale binding point, X1 represents the Gamma voltage of the third gray-scale binding point, and X2 represents the Gamma voltage of the fourth gray-scale binding point.
6. The method for adjusting the brightness of a display panel according to claim 4, wherein: The number of binding points between the third gray-scale binding point or the fourth gray-scale binding point and the abnormal gray-scale binding point is x, the number of binding points between the abnormal gray-scale binding point and the minimum gray-scale binding point is m, the number of binding points between the abnormal gray-scale binding point and the maximum gray-scale binding point is n, x < m, and x < n.
7. The method for adjusting the brightness of a display panel according to claim 4, wherein: Both the third gray-scale binding point and the fourth gray-scale binding point are binding points with normal Gamma voltage.
8. The method for adjusting the brightness of a display panel according to claim 7, wherein: The abnormal gray-scale binding points include a first abnormal binding point and a second abnormal binding point, and the first abnormal binding point and the second abnormal binding point are adjacent; Before calculating the target Gamma voltage of the abnormal gray-scale binding points, it further includes: Respectively obtaining the first gray-scale binding point, the second gray-scale binding point, the third gray-scale binding point, and the fourth gray-scale binding point corresponding to the first abnormal binding point and the second abnormal binding point; The calculating the target Gamma voltage of the abnormal grayscale binding point includes: calculating the target Gamma voltage of the first abnormal binding point and the second abnormal binding point according to a calculation formula; The calculation formula is: C = ((A-|X1|) + (B+|X2|)) ÷ 2; Among them, A represents the gamma voltage of the first grayscale binding point, B represents the gamma voltage of the second grayscale binding point, C represents the target gamma voltage of the abnormal grayscale binding point, X1 represents the gamma voltage of the third grayscale binding point, and X2 represents the gamma voltage of the fourth grayscale binding point.
9. The method for adjusting the brightness of a display panel according to claim 1, wherein: Before calculating the target gamma voltage of the abnormal grayscale binding point, the brightness adjustment method further includes: A fifth grayscale binding point and a sixth grayscale binding point corresponding to the abnormal grayscale binding point are obtained; wherein the fifth grayscale binding point and the sixth grayscale binding point are respectively located on both sides of the abnormal grayscale binding point.
10. The method for adjusting the brightness of a display panel according to claim 9, wherein: The number of binding points between the fifth grayscale binding point and the abnormal grayscale binding point is equal to the number of binding points between the sixth grayscale binding point and the abnormal grayscale binding point.
11. The method for adjusting the brightness of a display panel according to claim 9, wherein: The number of binding points between the fifth grayscale binding point and the abnormal grayscale binding point is not equal to the number of binding points between the sixth grayscale binding point and the abnormal grayscale binding point.
12. The method for adjusting the brightness of a display panel according to claim 9, wherein: The calculating the target Gamma voltage of the abnormal grayscale binding point includes: Calculate the target Gamma voltage according to a calculation formula; The calculation formula is: C = (E + F) ÷ 2; Wherein, E represents the Gamma voltage of the fifth grayscale binding point, F represents the Gamma voltage of the sixth grayscale binding point, and C represents the target Gamma voltage of the abnormal grayscale binding point.
13. The method for adjusting the brightness of a display panel according to claim 1, wherein: The method for obtaining abnormal grayscale binding points that need to be adjusted includes: obtaining a plurality of abnormal grayscale binding points; The calculating the target Gamma voltage of the abnormal grayscale binding point includes: The target Gamma voltages corresponding to the plurality of abnormal grayscale binding points are calculated simultaneously.
14. The method for adjusting the brightness of a display panel according to claim 1, wherein: The method for obtaining the abnormal grayscale binding point that needs to be adjusted includes: determining the abnormal grayscale binding point according to a fluctuation range.
15. The method for adjusting the brightness of a display panel according to claim 1, wherein: The calculating the target Gamma voltage of the abnormal grayscale binding point includes: Calculate the target Gamma voltage of the abnormal grayscale binding point according to the calculation formula; After writing the target Gamma voltage into the register of the abnormal grayscale binding point, the brightness adjustment method further includes: Generate the second Gamma curve; According to the second Gamma curve, it is determined whether the adjusted Gamma voltage of the abnormal grayscale binding point satisfies the calculation formula.
16. The method for adjusting the brightness of a display panel according to claim 15, wherein: After determining whether the adjusted Gamma voltage of the abnormal grayscale binding point satisfies the calculation formula, the brightness adjustment method further includes: Determine whether the gamma voltage of each grayscale binding point meets the threshold range.
17. The method for adjusting the brightness of a display panel according to claim 1, wherein: Also includes: The display panel is driven according to the adjusted Gamma voltage.
18. A display panel, characterized in that: The brightness adjustment method of a display panel according to any one of claims 1 to 17 is used to adjust the brightness.
19. A display device, characterized in that: Comprising the display panel as claimed in claim 18.