Display panel, driving method thereof, and display device

Abstract

The application discloses a display panel and a driving method and a display device thereof, and discloses a display panel and a driving method and a display device thereof. The driving method comprises the following steps: obtaining a first target voltage signal transmitted by a first data line to a first color sub-pixel in a target gray scale, and a second target voltage signal transmitted by the first data line to a second color sub-pixel; under the same target gray scale, transmitting a first adjusting voltage signal from the first data line to the first color sub-pixel, and transmitting a second adjusting voltage signal from the first data line to the second color sub-pixel; and an absolute value of a difference between the first adjusting voltage signal and the second adjusting voltage signal is smaller than an absolute value of a difference between the first target voltage signal and the second target voltage signal. The application is beneficial to reducing power consumption.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a display panel and its driving method and display device. Background Technology

[0002] Display panels made of OLED (Organic Light-Emitting Diode) have been listed as a promising next-generation display technology due to their advantages such as being thin, light, having a wide viewing angle, being self-emissive, having continuously adjustable emission colors, being low in cost, having a fast response speed, having a wide operating temperature range, having a simple manufacturing process, and being flexible in display.

[0003] However, a drawback of existing OLED display panels is their high power consumption. Therefore, reducing the power consumption of display panels is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] In view of this, the present invention provides a display panel and its driving method and display device, which are beneficial to reducing power consumption.

[0005] This invention provides a driving method for a display panel. The display panel includes multiple sub-pixels and multiple data lines extending along a first direction. The sub-pixels include at least first color sub-pixels and second color sub-pixels. The display panel also includes multiple first sub-pixel groups arranged along a second direction. Each first sub-pixel group includes first color sub-pixels and second color sub-pixels spaced apart along the first direction. The data lines include first data lines. The first sub-pixel groups and the first data lines correspond to each other. The first data lines are electrically connected to the sub-pixels in their corresponding first sub-pixel groups. The first direction and the second direction intersect. The driving method includes: acquiring a first target voltage signal that is preset to be transmitted by the first data lines to the first color sub-pixels electrically connected to them at a target grayscale, and a second target voltage signal that is preset to be transmitted by the first data lines to the second color sub-pixels electrically connected to them; at the same target grayscale, the first data lines transmit a first adjustment voltage signal to the first color sub-pixels electrically connected to them, and the first data lines transmit a second adjustment voltage signal to the second color sub-pixels electrically connected to them; the absolute value of the difference between the first adjustment voltage signal and the second adjustment voltage signal is less than the absolute value of the difference between the first target voltage signal and the second target voltage signal.

[0006] Based on the same idea, the present invention also provides a display panel, which is driven by the driving method provided by the present invention.

[0007] Based on the same idea, the present invention also provides a display device, including the display panel provided by the present invention.

[0008] Compared with the prior art, the display panel, driving method, and display device provided by the present invention achieve at least the following beneficial effects:

[0009] In the display panel driving method provided by the present invention, the power consumption on the first data line can be effectively reduced by adjusting the voltage difference between the first adjustment voltage signal transmitted by the first data line to the first color sub-pixel electrically connected to it and the second adjustment voltage signal transmitted to the second color sub-pixel electrically connected to it under the same target gray level to be less than the voltage difference between the first target voltage signal and the second target voltage signal. Correspondingly, this is beneficial to reducing the power consumption of the display panel.

[0010] Of course, any product implementing this invention need not necessarily achieve all of the technical effects described above at the same time.

[0011] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0013] Figure 1 This is a schematic diagram of the structure of a display panel to which the driving method provided in the embodiments of the present invention is applicable;

[0014] Figure 2 This is a waveform diagram of the first data line in the driving method provided in the prior art;

[0015] Figure 3 This is a flowchart illustrating a driving method for a display panel provided by the present invention;

[0016] Figure 4 This is a waveform diagram of the first data line in the driving method provided by the present invention;

[0017] Figure 5 This is a flowchart illustrating another driving method for the display panel provided by the present invention;

[0018] Figure 6 This is a flowchart illustrating step S23 in the display panel driving method provided by the present invention.

[0019] Figure 7 This is a flowchart illustrating step S24 of the display panel driving method provided by the present invention.

[0020] Figure 8 This is a flowchart illustrating another driving method for the display panel provided by the present invention;

[0021] Figure 9 This is a flowchart illustrating another driving method for the display panel provided by the present invention;

[0022] Figure 10 This is another waveform diagram of the first data line in the driving method provided by the present invention;

[0023] Figure 11 This is a flowchart illustrating another driving method for the display panel provided by the present invention;

[0024] Figure 12 This is a flowchart illustrating another driving method for the display panel provided by the present invention;

[0025] Figure 13 This is a plan view of a display device provided by the present invention. Detailed Implementation

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps S set forth in these embodiments do not limit the scope of the invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0031] This embodiment provides a driving method for a display panel, used to drive the display panel provided in this embodiment of the invention. Figure 1 This is a schematic diagram of the structure of a display panel to which the driving method provided in the embodiments of the present invention is applied. (Refer to...) Figure 1The display panel includes multiple sub-pixels P and multiple data lines D extending along a first direction X. Each sub-pixel P includes at least a first-color sub-pixel P1 and a second-color sub-pixel P2. The display panel also includes multiple first sub-pixel groups P10 arranged along a second direction Y. Each first sub-pixel group P10 includes first-color sub-pixels P1 and second-color sub-pixels P2 spaced apart along the first direction X. The data lines S include a first data line S1. The first sub-pixel groups P10 and the first data line S1 correspond to each other, and the first data line S1 is electrically connected to the sub-pixels P in its corresponding first sub-pixel group P10. The first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular.

[0032] Figure 2 This is a waveform diagram of the first data line in the driving method provided in the prior art, for reference. Figure 1 and Figure 2 Specifically, in a display panel using the driving method provided in this embodiment of the invention, the first data line S1 corresponds to the first sub-pixel group P10, and the first data line S1 is electrically connected to the sub-pixel P in the corresponding first sub-pixel group P10. Since the first sub-pixel group P10 includes a first color sub-pixel P1 and a second color sub-pixel P2 spaced apart along a first direction X, the first data line S1 is used to provide voltage signals to the first color sub-pixel P1 and the second color sub-pixel P2 electrically connected to it at different time periods. That is, at the target grayscale, the first data line S1 provides a first target voltage signal V1' to the first color sub-pixel P1 electrically connected to it, and the first data line S1 provides a second target voltage signal V2' to the second color sub-pixel P2 electrically connected to it, with a voltage difference between the first target voltage signal V1' and the second target voltage signal V2'. According to the formula P=C×ΔV2×F, where P is the power consumption on the first data line S1, C is the impedance of the first data line S1, ΔV is the voltage difference between the voltages supplied by the first data line S1 to the first color sub-pixel P1 and the second color sub-pixel P2 electrically connected to it, and F is the frequency of change when the first data line S1 supplies voltage signals to the first color sub-pixel P1 and the second color sub-pixel P2. When the impedance of the first data line S1 and the frequency of change when the first data line S1 supplies voltage signals to the first color sub-pixel P1 and the second color sub-pixel P2 are fixed, the greater the voltage difference between the voltages supplied by the first data line S1 to the first color sub-pixel P1 and the second color sub-pixel P2 electrically connected to it, the greater the power consumption on the first data line S1, and correspondingly, the greater the power consumption of the display panel.

[0033] Figure 3 This is a flowchart illustrating a driving method for a display panel provided by the present invention. The driving method provided in this embodiment includes:

[0034] Step S1: Obtain the first target voltage signal that is preset to be transmitted by the first data line to the first color sub-pixel electrically connected to it under the target grayscale, and the second target voltage signal that is preset to be transmitted by the first data line to the second color sub-pixel electrically connected to it.

[0035] refer to Figures 1-3 In the prior art, under the target grayscale, the first data line S1 is preset to transmit a first target voltage signal V1' to the first color sub-pixel P1 electrically connected to it. Under the target grayscale, the first data line S1 provides a first target voltage signal V1' to the first color sub-pixel P1 electrically connected to it. The first data line S1 is preset to transmit a second target voltage signal V2' to the second color sub-pixel P2 electrically connected to it.

[0036] Step S2: Under the same target grayscale, the first data line transmits a first adjustment voltage signal to the first color sub-pixel electrically connected to it, and the first data line transmits a second adjustment voltage signal to the second color sub-pixel electrically connected to it; the absolute value of the difference between the first adjustment voltage signal and the second adjustment voltage signal is less than the absolute value of the difference between the first target voltage signal and the second target voltage signal.

[0037] Specifically, Figure 4 This is a waveform diagram of the first data line in the driving method provided by the present invention, for reference. Figure 1 , Figure 2 and Figure 4 Under the same target grayscale, the first data line S1 transmits a first adjustment voltage signal V1 to the first color sub-pixel P1 electrically connected to it, and the first data line S1 transmits a second adjustment voltage signal V2 to the second color sub-pixel P2 electrically connected to it. The absolute value of the difference between the first adjustment voltage signal V1 and the second adjustment voltage signal V2 is less than the absolute value of the difference between the first target voltage signal V1' and the second target voltage signal V2'. That is, in the driving method of the display panel provided in this embodiment, by adjusting the voltage difference between the first adjustment voltage signal V1 transmitted by the first data line S1 to the first color sub-pixel P1 electrically connected to it and the second adjustment voltage signal V2 transmitted by the first data line S1 to the second color sub-pixel P2 electrically connected to it to be less than the voltage difference between the first target voltage signal V1' and the second target voltage signal V2' under the same target grayscale, the power consumption on the first data line S1 can be effectively reduced, which is beneficial to reducing the power consumption of the display panel.

[0038] Figure 5 This is a flowchart illustrating another driving method for the display panel provided by the present invention. (Refer to...) Figure 5 In some optional embodiments, the driving method further includes:

[0039] Step S21: Obtain the set chromaticity coordinates of the first sub-pixel and the second sub-pixel under the set grayscale, wherein the set chromaticity coordinates of the first sub-pixel are greater than the set chromaticity coordinates of the second sub-pixel.

[0040] Step S22: Determine the control range of the chromaticity coordinates of the first sub-pixel based on the set chromaticity coordinates of the first sub-pixel, and determine the control range of the chromaticity coordinates of the second sub-pixel based on the set chromaticity coordinates of the second sub-pixel.

[0041] When the set grayscale is greater than the set chromaticity coordinates of the first sub-pixel, the corresponding chromaticity coordinates within the control range of the chromaticity coordinates of the first sub-pixel determined by the set chromaticity coordinates of the first sub-pixel are all greater than the chromaticity coordinates within the control range of the chromaticity coordinates of the second sub-pixel determined by the set chromaticity coordinates of the second sub-pixel.

[0042] Step S23: Find the lowest chromaticity coordinate of the first sub-pixel based on the control range of the chromaticity coordinate of the first sub-pixel.

[0043] Step S24: Find the highest chromaticity coordinate of the second sub-pixel based on the control range of the chromaticity coordinate of the second sub-pixel.

[0044] Step S25: Establish a first relationship based on multiple gray levels and the lowest chromaticity coordinates of the first sub-pixel under the corresponding gray level.

[0045] Step S26: Establish a second relationship based on multiple gray levels and the highest chromaticity coordinates of the second sub-pixel under the corresponding gray levels.

[0046] Step S27: Based on the first relationship, obtain the lowest chromaticity coordinates of the first sub-pixel under the target grayscale. Based on the gamma formula, determine the first adjustment voltage signal according to the lowest chromaticity coordinates of the first sub-pixel. The first data line transmits the first adjustment voltage signal to the first color sub-pixel electrically connected to it.

[0047] Step S28: Based on the second relationship, obtain the highest chromaticity coordinates of the second sub-pixel under the target grayscale. Based on the gamma formula, determine the second adjustment voltage signal according to the highest chromaticity coordinates of the second sub-pixel. The first data line transmits the second adjustment voltage signal to the second color sub-pixel electrically connected to it.

[0048] The gamma formula is: V = VGMP - (VGMP - VGSP) × 4095 × P, where V is the adjustment voltage value of the sub-pixel at different gray levels, VGMP is the set voltage value of the sub-pixel at gray level 0, VGSP is the set voltage value of the sub-pixel at gray level 255, and P is the sub-pixel register value, which includes the chromaticity coordinates of the sub-pixel. That is, the adjustment voltage value of a sub-pixel at a certain gray level is positively correlated with its chromaticity coordinates at the same gray level. The smaller the chromaticity coordinates of a sub-pixel at a certain gray level, the smaller the adjustment voltage value of the sub-pixel at the same gray level. Similarly, the larger the chromaticity coordinates of a sub-pixel at a certain gray level, the larger the adjustment voltage value of the sub-pixel at the same gray level.

[0049] Specifically, across multiple grayscale levels, the control range of the chromaticity coordinates of the first sub-pixel can be determined based on the set chromaticity coordinates of the first sub-pixel. Furthermore, the lowest chromaticity coordinates of the first sub-pixel at different grayscale levels can be found within this control range. Thus, a first relationship can be established based on multiple grayscale levels and the lowest chromaticity coordinates of the first sub-pixel at each corresponding grayscale level. Based on this first relationship, the lowest chromaticity coordinates of the first sub-pixel at the target grayscale level can be obtained. Therefore, based on the gamma formula, a first adjustment voltage signal can be determined according to the lowest chromaticity coordinates of the first sub-pixel. The first data line transmits the first adjustment voltage signal to the first color sub-pixel electrically connected to it. At this time, the first adjustment voltage signal is the minimum voltage required to make the first color sub-pixel meet the grayscale brightness requirements.

[0050] Similarly, at multiple gray levels, the control range of the chromaticity coordinates of the second sub-pixel can be determined based on the set chromaticity coordinates of the second sub-pixel. Furthermore, the highest chromaticity coordinate of the second sub-pixel at different gray levels can be found within this control range. Thus, a second relationship can be established based on multiple gray levels and the highest chromaticity coordinates of the second sub-pixel at each corresponding gray level. Based on this second relationship, the highest chromaticity coordinate of the second sub-pixel at the target gray level can be obtained. Therefore, based on the gamma formula, a second adjustment voltage signal can be determined according to the highest chromaticity coordinates of the second sub-pixel. The first data line transmits the second adjustment voltage signal to the second color sub-pixel electrically connected to it. At this time, the second adjustment voltage signal is the maximum voltage required to make the second color sub-pixel meet the gray level brightness requirements.

[0051] Therefore, the difference between the first regulated voltage signal and the second regulated voltage signal is less than the difference between the first target voltage signal and the second target voltage signal, and the difference between the first regulated voltage signal and the second regulated voltage signal is small, thereby effectively reducing the power consumption on the first data line, which in turn helps to reduce the power consumption of the display panel.

[0052] Figure 6This is a flowchart illustrating step S23 of the display panel driving method provided by the present invention, see reference. Figure 5 and Figure 6 In some optional embodiments, step S23, finding the lowest chromaticity coordinate of the first sub-pixel based on the controlled range of the chromaticity coordinates of the first sub-pixel, includes:

[0053] Step S231: Test the brightness of the first sub-pixel when the first sub-pixel is the chromaticity coordinate to be tested;

[0054] Step S232: Determine whether the brightness is within the set brightness range of the first sub-pixel;

[0055] If so, then execute step S233, and take the average of the minimum values ​​of the control range of the chromaticity coordinates to be tested and the chromaticity coordinates of the first sub-pixel as the next chromaticity coordinate to be tested;

[0056] If not, proceed to step S234, using the previous chromaticity coordinate to be tested as the lowest chromaticity coordinate of the first sub-pixel;

[0057] The initial chromaticity coordinates of the first sub-pixel to be tested are the set chromaticity coordinates of the first sub-pixel.

[0058] Specifically, the set chromaticity coordinates of the first sub-pixel can be set as the initial chromaticity coordinates to be tested of the first sub-pixel. The brightness of the first sub-pixel when the first sub-pixel is the chromaticity coordinate to be tested is tested, and it is determined whether the brightness is within the set brightness range of the first sub-pixel. If the brightness is within the set brightness range of the first sub-pixel, the average value of the minimum value of the control range of the chromaticity coordinates to be tested and the chromaticity coordinates of the first sub-pixel is taken as the next chromaticity coordinate to be tested. Thus, step S231 is repeated until the brightness of the first sub-pixel when the first sub-pixel is the chromaticity coordinate to be tested is not within the set brightness range of the first sub-pixel. Thus, the previous chromaticity coordinate to be tested is taken as the lowest chromaticity coordinate of the first sub-pixel. At this time, the previous chromaticity coordinate to be tested is the lowest chromaticity coordinate of the first sub-pixel when the brightness requirement of the first sub-pixel is met. That is, the lowest chromaticity coordinate of the first sub-pixel is found based on the control range of the chromaticity coordinates of the first sub-pixel.

[0059] Figure 7 This is a flowchart illustrating step S24 of the display panel driving method provided by the present invention, see reference. Figure 5 and Figure 7 Step S24, finding the highest chromaticity coordinate of the second sub-pixel based on the controlled range of the second sub-pixel's chromaticity coordinates, includes:

[0060] Step S241: Test the brightness of the second sub-pixel when the second sub-pixel is the chromaticity coordinate to be tested;

[0061] Step S242: Determine whether the brightness is within the set brightness range of the second sub-pixel;

[0062] If so, then execute step S243, and take the average of the maximum values ​​of the control range of the chromaticity coordinates to be tested and the chromaticity coordinates of the second sub-pixel as the next chromaticity coordinate to be tested;

[0063] If not, proceed to step S244, using the previous chromaticity coordinate to be tested as the highest chromaticity coordinate of the second sub-pixel;

[0064] The initial chromaticity coordinates of the second sub-pixel to be tested are the set chromaticity coordinates of the second sub-pixel.

[0065] Specifically, the set chromaticity coordinates of the second sub-pixel can be set as the initial chromaticity coordinates to be tested for the second sub-pixel. The brightness of the second sub-pixel when the second sub-pixel is the chromaticity coordinate to be tested is tested, and it is determined whether the brightness is within the set brightness range of the second sub-pixel. If the brightness is within the set brightness range of the second sub-pixel, the average value of the maximum value of the control range between the chromaticity coordinate to be tested and the chromaticity coordinates of the second sub-pixel is taken as the next chromaticity coordinate to be tested. Thus, step S231 is repeated until the brightness of the second sub-pixel is not within the set brightness range of the second sub-pixel when the second sub-pixel is the chromaticity coordinate to be tested. Thus, the previous chromaticity coordinate to be tested is taken as the highest chromaticity coordinate of the second sub-pixel. At this time, the previous chromaticity coordinate to be tested is the highest chromaticity coordinate of the second sub-pixel when the brightness requirement of the second sub-pixel is met. That is, the highest chromaticity coordinate of the second sub-pixel is found based on the control range of the chromaticity coordinates of the second sub-pixel.

[0066] Figure 8 This is a flowchart illustrating another driving method for the display panel provided by the present invention. (Refer to...) Figure 8 In some optional embodiments, step S23, finding the lowest chromaticity coordinate of the first sub-pixel based on the controlled range of the chromaticity coordinates of the first sub-pixel, includes:

[0067] The minimum value of the control range of the chromaticity coordinates of the first sub-pixel is used as the initial value. The lowest chromaticity coordinates of the first sub-pixel are obtained step by step with a preset step size, so that the brightness of the first sub-pixel is within the set brightness range of the first sub-pixel when the lowest chromaticity coordinates are obtained.

[0068] Specifically, the lowest chromaticity coordinates of the first sub-pixel can be found step-by-step. That is, starting with the minimum value of the controlled range of the first sub-pixel's chromaticity coordinates, a preset step size is added to progressively test whether the brightness of the first sub-pixel is within the set brightness range at different chromaticity coordinates, until the lowest chromaticity coordinate of the first sub-pixel is found. This ensures that the brightness of the first sub-pixel at its lowest chromaticity coordinate is within the set brightness range, and that the brightness of the first sub-pixel is not within the set brightness range when the lowest chromaticity coordinate is subtracted from the preset step size. In other words, the lowest chromaticity coordinate of the first sub-pixel can be found based on the controlled range of its chromaticity coordinates.

[0069] It should be noted that when searching for the lowest chromaticity coordinates of the first sub-pixel in a step-by-step manner, the preset step size can be set according to the actual algorithm requirements, and this invention does not impose any specific limitations.

[0070] Step S24, finding the highest chromaticity coordinate of the second sub-pixel based on the controlled range of its chromaticity coordinates includes:

[0071] Using the maximum value of the control range of the chromaticity coordinates of the second sub-pixel as the initial value, the highest chromaticity coordinates of the second sub-pixel are obtained step by step with a preset step size, so that the brightness of the second sub-pixel is within the set brightness range of the second sub-pixel when the highest chromaticity coordinates of the second sub-pixel are obtained.

[0072] Specifically, the highest chromaticity coordinate of the second sub-pixel can be found step-by-step. That is, starting with the maximum value of the controlled range of the first sub-pixel's chromaticity coordinates, a preset step size is subtracted, and the brightness of the second sub-pixel at different chromaticity coordinates is progressively tested to see if it falls within the set brightness range of the second sub-pixel. This continues until the highest chromaticity coordinate of the second sub-pixel is found, ensuring that the brightness of the second sub-pixel at its highest chromaticity coordinate is within the set brightness range, and that the brightness of the second sub-pixel is outside the set brightness range when the highest chromaticity coordinate is added to the preset step size. In other words, this achieves the finding of the highest chromaticity coordinate of the second sub-pixel based on the controlled range of its chromaticity coordinates.

[0073] It should be noted that when searching for the lowest chromaticity coordinates of the second sub-pixel in a step-by-step manner, the preset step size can be set according to the actual algorithm requirements, and this invention does not impose any specific limitations.

[0074] refer to Figure 5 In some optional embodiments, the control range for determining the chromaticity coordinates of the first sub-pixel based on the set chromaticity coordinates of the first sub-pixel in step S22 includes:

[0075] Step S221: The set chromaticity coordinate of the first sub-pixel is A, and the control range of the chromaticity coordinate of the first sub-pixel is (1-K)×A≤A≤(1+K)×A;

[0076] The controlled range for determining the chromaticity coordinates of the second sub-pixel based on the set chromaticity coordinates of the second sub-pixel in step S22 includes:

[0077] Step S222: The set chromaticity coordinate of the second sub-pixel is B, and the control range of the chromaticity coordinate of the second sub-pixel is (1-K)×B≤B≤(1+K)×B;

[0078] Where K is the card control value, 0 < K < 1.

[0079] Specifically, the control range of the chromaticity coordinates of the first sub-pixel can be determined based on the set chromaticity coordinates and the control value of the first sub-pixel. When the set chromaticity coordinates of the first sub-pixel are A and the control value is K, the control range of the chromaticity coordinates of the first sub-pixel is (1-K)×A≤A≤(1+K)×A.

[0080] Similarly, the control range of the chromaticity coordinates of the second sub-pixel can be determined based on the set chromaticity coordinates and the control value of the second sub-pixel. When the set chromaticity coordinates of the second sub-pixel are B and the control value is K, the control range of the chromaticity coordinates of the second sub-pixel is (1-K)×B≤B≤(1+K)×B.

[0081] It should be noted that, under the same grayscale, the control value used to determine the control range of the chromaticity coordinates of the first sub-pixel can be the same as the control value used to determine the control range of the chromaticity coordinates of the second sub-pixel, or they can be set differently, depending on the actual needs.

[0082] In some alternative embodiments, 0.3 ≤ K ≤ 0.5.

[0083] Specifically, when K ≤ 0.5, both the control ranges of the chromaticity coordinates of the first and second sub-pixels are relatively small. This is beneficial for finding the lowest chromaticity coordinate of the first sub-pixel based on its control range, and for finding the highest chromaticity coordinate of the second sub-pixel based on its control range. When K ≤ 0.3, this avoids the control ranges of the chromaticity coordinates of both sub-pixels being too small, thus preventing the inability to find the lowest chromaticity coordinate of the first sub-pixel within its control range, and the inability to find the highest chromaticity coordinate of the second sub-pixel within its control range.

[0084] It should be noted that in other embodiments of the present invention, K can also be set to other values, which can be set according to actual needs, and will not be described in detail here.

[0085] Optionally, the value of K can be set differently at high grayscale and low grayscale, which is more conducive to finding the lowest chromaticity coordinate of the first sub-pixel within the control range of the chromaticity coordinates of the first sub-pixel, and finding the highest chromaticity coordinate of the second sub-pixel within the control range of the chromaticity coordinates of the second sub-pixel. This can be set according to the actual situation, and will not be elaborated on here.

[0086] Figure 9 This is a flowchart illustrating another driving method for the display panel provided by the present invention. (Refer to...) Figure 9 In some optional embodiments, the driving method further includes:

[0087] Step S21': Calculate the first voltage difference based on the first target voltage signal and the second target voltage signal, wherein the first target voltage signal is greater than the second target voltage signal;

[0088] Step S22': Subtract the first voltage difference from the first target voltage signal to obtain the first regulating voltage signal, and / or add the first voltage difference to the second target voltage signal to obtain the second regulating voltage signal.

[0089] Specifically, in the driving method provided in this embodiment, when the first target voltage signal is greater than the second target voltage signal, the first voltage difference can be calculated by subtracting the voltage value of the second target voltage signal from the voltage value of the first target voltage signal. The first adjustment voltage signal can be obtained by subtracting the first voltage difference from the first target voltage signal. At this time, the voltage value of the first adjustment voltage signal is less than the voltage value of the first target voltage signal. Therefore, the absolute value of the difference between the first adjustment voltage signal and the second adjustment voltage signal is less than the absolute value of the difference between the first target voltage signal and the second target voltage signal, thereby effectively reducing the power consumption on the first data line, and correspondingly, helping to reduce the power consumption of the display panel.

[0090] Similarly, a second adjustment voltage signal can be obtained by adding the first voltage difference to the second target voltage signal. At this time, the voltage value of the first adjustment voltage signal is less than the voltage value of the first target voltage signal. As a result, the absolute value of the difference between the first adjustment voltage signal and the second adjustment voltage signal is less than the absolute value of the difference between the first target voltage signal and the second target voltage signal, thereby effectively reducing the power consumption on the first data line. Correspondingly, this helps to reduce the power consumption of the display panel.

[0091] Similarly, a first regulating voltage signal can be obtained by subtracting a first voltage difference from a first target voltage signal. At the same time, a second regulating voltage signal can be obtained by adding a first voltage difference to a second target voltage signal. In this case, the voltage value of the first regulating voltage signal is less than the voltage value of the first target voltage signal. Therefore, the absolute value of the difference between the first regulating voltage signal and the second regulating voltage signal is less than the absolute value of the difference between the first target voltage signal and the second target voltage signal, thereby effectively reducing the power consumption on the first data line. Correspondingly, this helps to reduce the power consumption of the display panel.

[0092] Figure 10 This is another waveform diagram of the first data line in the driving method provided by the present invention, see reference. Figure 9 and Figure 10 In some alternative embodiments, the difference between the first regulating voltage signal V1 and the second regulating voltage signal V2 is 0.

[0093] Specifically, when the first target voltage signal is greater than the second target voltage signal, the first voltage difference can be calculated by subtracting the voltage value of the second target voltage signal from the voltage value of the first target voltage signal. The first adjustment voltage signal V1 can be obtained by directly subtracting the first voltage difference from the first target voltage signal. At this time, the difference between the first adjustment voltage signal V1 and the second adjustment voltage signal V2 is 0, thereby effectively reducing the power consumption on the first data line, which in turn helps to reduce the power consumption of the display panel.

[0094] Similarly, the second adjustment voltage signal V2 can be obtained by directly adding the first voltage difference to the second target voltage signal. At this time, the difference between the first adjustment voltage signal V1 and the second adjustment voltage signal V2 is 0, thereby effectively reducing the power consumption on the first data line, which in turn helps to reduce the power consumption of the display panel.

[0095] Similarly, the first adjustment voltage signal V1 can be obtained by directly subtracting the first voltage difference from the first target voltage signal. At the same time, the second adjustment voltage signal V2 can be obtained by adding the first voltage difference to the second target voltage signal. In this case, the difference between the first adjustment voltage signal V1 and the second adjustment voltage signal V2 is 0, thereby effectively reducing the power consumption on the first data line, which in turn helps to reduce the power consumption of the display panel.

[0096] Figure 11 This is a flowchart illustrating another driving method for the display panel provided by the present invention. (Refer to...) Figure 11 In some optional embodiments, the driving method further includes:

[0097] Step S31: When the first target voltage signal is subtracted from the first voltage difference to obtain the first adjustment voltage signal, a compensation value is calculated based on the actual brightness and target brightness when the first adjustment voltage signal is transmitted to the first sub-pixel.

[0098] Step S32: Establish a third relationship based on multiple gray levels and the corresponding compensation values ​​under the gray levels;

[0099] Step S33: Based on the third relationship, obtain the compensation value under the target grayscale and adjust the luminance of the first sub-pixel.

[0100] Specifically, when the first adjustment voltage signal is obtained by subtracting the first voltage difference from the first target voltage signal, a compensation value can be calculated based on the actual brightness and target brightness when the first adjustment voltage signal is transmitted to the first sub-pixel. This achieves the target brightness emission effect when the first adjustment voltage signal is transmitted to the first sub-pixel. A third relationship is established based on multiple gray levels and corresponding compensation values ​​at those gray levels. Based on this third relationship, the compensation value at the target gray level is obtained, and the emission brightness of the first sub-pixel is adjusted. Therefore, when the first adjustment voltage signal is transmitted to the first sub-pixel at the target gray level, the difference between the first and second adjustment voltage signals can be reduced, and the first sub-pixel can achieve the target emission effect.

[0101] Similarly, Figure 12 This is a flowchart illustrating another driving method for the display panel provided by the present invention. (Refer to...) Figure 12 The driving method also includes:

[0102] Step S41: When the second target voltage signal is added to the first voltage difference to obtain the second adjustment voltage signal, a compensation value is calculated based on the actual brightness and target brightness when the second adjustment voltage signal is transmitted to the second sub-pixel.

[0103] Step S42: Establish a fourth relationship based on multiple gray levels and corresponding compensation values ​​at each gray level;

[0104] Step S43: Based on the fourth relationship, obtain the compensation value under the target grayscale and adjust the luminance of the second sub-pixel.

[0105] Specifically, when the second adjustment voltage signal is obtained by adding the first voltage difference to the second target voltage signal, a compensation value is calculated based on the actual brightness and target brightness when the second adjustment voltage signal is transmitted to the second sub-pixel. This achieves the desired luminous effect at the target brightness when the second adjustment voltage signal is transmitted to the second sub-pixel. A fourth relationship is established based on multiple gray levels and the corresponding compensation values ​​at each gray level. Based on this fourth relationship, the compensation value at the target gray level is obtained, and the luminous brightness of the second sub-pixel is adjusted. This allows the transmission of the second adjustment voltage signal to the second sub-pixel at the target gray level, thereby reducing the difference between the first and second adjustment voltage signals and achieving the desired luminous effect for the second sub-pixel.

[0106] This embodiment provides a display panel, the structure of which can be referred to... Figure 1As shown. The display panel provided in this embodiment of the invention can be driven using the driving method provided in any of the above embodiments. That is, the display panel provided in this embodiment of the invention has the beneficial effects of the driving method of the display panel provided in this embodiment of the invention. For details, please refer to the specific description of the driving method of the display panel in the above embodiments, which will not be repeated here.

[0107] In some alternative embodiments, please refer to Figure 13 , Figure 13 This is a plan view of a display device provided by the present invention. The display device 1000 provided in this embodiment includes the display panel 100 provided in the above embodiment of the present invention. Figure 13 This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device 1000 provided in this embodiment can also be other display devices 1000 with display functions, such as computers, televisions, and in-vehicle display devices. This invention does not impose specific limitations on these. The display device 1000 provided in this embodiment has the beneficial effects of the display panel 100 provided in this embodiment. For details, please refer to the specific descriptions of the display panel 100 in the above embodiments; these will not be repeated here.

[0108] As can be seen from the above embodiments, the display panel, driving method, and display device provided by the present invention achieve at least the following beneficial effects:

[0109] In the display panel driving method provided by the present invention, the power consumption on the first data line can be effectively reduced by adjusting the voltage difference between the first adjustment voltage signal transmitted by the first data line to the first color sub-pixel electrically connected to it and the second adjustment voltage signal transmitted to the second color sub-pixel electrically connected to it under the same target gray level to be less than the voltage difference between the first target voltage signal and the second target voltage signal. Correspondingly, this is beneficial to reducing the power consumption of the display panel.

[0110] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A driving method of a display panel, characterized by, The display panel includes multiple sub-pixels and multiple data lines extending along a first direction. The sub-pixels include at least a first color sub-pixel and a second color sub-pixel. The display panel also includes multiple first sub-pixel groups arranged along a second direction. Each first sub-pixel group includes first color sub-pixels and second color sub-pixels spaced apart along the first direction. The data lines include first data lines. The first sub-pixel groups and the first data lines correspond to each other. The first data lines are electrically connected to the sub-pixels in the corresponding first sub-pixel groups. The first direction and the second direction intersect. The driving method includes: Under the target grayscale, the first data line is preset to transmit a first target voltage signal to the first color sub-pixel electrically connected to it, and the first data line is preset to transmit a second target voltage signal to the second color sub-pixel electrically connected to it. Under the same target grayscale, the first data line transmits a first adjustment voltage signal to the first color sub-pixel electrically connected to it, and the first data line transmits a second adjustment voltage signal to the second color sub-pixel electrically connected to it. The absolute value of the difference between the first regulated voltage signal and the second regulated voltage signal is less than the absolute value of the difference between the first target voltage signal and the second target voltage signal, including: Obtain the set chromaticity coordinates of the first sub-pixel and the set chromaticity coordinates of the second sub-pixel at a set grayscale, wherein the set chromaticity coordinates of the first sub-pixel are greater than the set chromaticity coordinates of the second sub-pixel; The control range of the chromaticity coordinates of the first sub-pixel is determined based on the set chromaticity coordinates of the first sub-pixel, and the control range of the chromaticity coordinates of the second sub-pixel is determined based on the set chromaticity coordinates of the second sub-pixel. The lowest chromaticity coordinate of the first sub-pixel is found based on the control range of the chromaticity coordinates of the first sub-pixel; The highest chromaticity coordinate of the second sub-pixel is found based on the control range of the chromaticity coordinates of the second sub-pixel; A first relationship is established based on multiple gray levels and the lowest chromaticity coordinates of the first sub-pixel under the corresponding gray levels; A second relationship is established based on multiple gray levels and the highest chromaticity coordinates of the second sub-pixel under the corresponding gray levels; Based on the first relationship, the lowest chromaticity coordinate of the first sub-pixel under the target gray level is obtained. Based on the gamma formula, the first adjustment voltage signal is determined according to the lowest chromaticity coordinate of the first sub-pixel. The first data line transmits the first adjustment voltage signal to the first color sub-pixel electrically connected to it. Based on the second relationship, the highest chromaticity coordinate of the second sub-pixel under the target grayscale is obtained. Based on the gamma formula, the second adjustment voltage signal is determined according to the highest chromaticity coordinate of the second sub-pixel. The first data line transmits the second adjustment voltage signal to the second color sub-pixel electrically connected to it. The gamma formula is: V = VGMP - (VGMP - VGSP) × 4095 × P, where V is the adjustment voltage value of the sub-pixel at different gray levels, VGMP is the set voltage value of the sub-pixel at gray level 0, VGSP is the set voltage value of the sub-pixel at gray level 255, and P is the sub-pixel register value.

2. The driving method for the display panel according to claim 1, characterized in that, The process of finding the lowest chromaticity coordinate of the first sub-pixel based on the control range of its chromaticity coordinates includes: The brightness of the first sub-pixel is tested when the first sub-pixel is the chromaticity coordinate of the test sub-pixel; Determine whether the brightness is within the set brightness range of the first sub-pixel; If so, the average of the minimum values ​​of the control range of the chromaticity coordinates to be tested and the chromaticity coordinates of the first sub-pixel shall be the next chromaticity coordinate to be tested; If not, then the chromaticity coordinates to be tested mentioned above are the lowest chromaticity coordinates of the first sub-pixel; Wherein, the initial chromaticity coordinates of the first sub-pixel to be tested are the set chromaticity coordinates of the first sub-pixel; The process of finding the highest chromaticity coordinate of the second sub-pixel based on the control range of the second sub-pixel's chromaticity coordinates includes: The brightness of the second sub-pixel is tested when the second sub-pixel is the chromaticity coordinate of the test sub-pixel; Determine whether the brightness is within the set brightness range of the second sub-pixel; If so, the average of the maximum values ​​of the controlled range of the chromaticity coordinates of the second sub-pixel and the chromaticity coordinates of the first sub-pixel is taken as the next chromaticity coordinate to be tested. If not, then the chromaticity coordinates to be tested mentioned above are the highest chromaticity coordinates of the second sub-pixel; Wherein, the initial chromaticity coordinates of the second sub-pixel to be tested are the set chromaticity coordinates of the second sub-pixel.

3. The driving method for the display panel according to claim 1, characterized in that, The process of finding the lowest chromaticity coordinate of the first sub-pixel based on the control range of its chromaticity coordinates includes: The minimum value of the control range of the chromaticity coordinates of the first sub-pixel is used as the initial value. The lowest chromaticity coordinates of the first sub-pixel are obtained step by step with a preset step size, so that the brightness of the first sub-pixel is within the set brightness range of the first sub-pixel when the lowest chromaticity coordinates of the first sub-pixel are used. The process of finding the highest chromaticity coordinate of the second sub-pixel based on the control range of the second sub-pixel's chromaticity coordinates includes: Using the maximum value of the control range of the chromaticity coordinates of the second sub-pixel as the initial value, the highest chromaticity coordinates of the second sub-pixel are obtained step by step with a preset step size, so that the brightness of the second sub-pixel is within the set brightness range of the second sub-pixel when the highest chromaticity coordinates of the second sub-pixel are reached.

4. The driving method for a display panel according to claim 1, characterized in that, The controlled range for determining the chromaticity coordinates of the first sub-pixel based on the set chromaticity coordinates of the first sub-pixel includes: The set chromaticity coordinate of the first sub-pixel is A, and the control range of the chromaticity coordinate of the first sub-pixel is (1-K)×A≤A≤(1+K)×A; The controlled range for determining the chromaticity coordinates of the second sub-pixel based on the set chromaticity coordinates of the second sub-pixel includes: The set chromaticity coordinate of the second sub-pixel is B, and the control range of the chromaticity coordinate of the second sub-pixel is (1-K)×B≤B≤(1+K)×B; Where K is the card control value, 0 < K < 1.

5. The driving method for a display panel according to claim 4, characterized in that, 0.3≤K≤0.5。 6. The driving method for a display panel according to claim 1, characterized in that, Also includes: A first voltage difference is calculated based on the first target voltage signal and the second target voltage signal, wherein the first target voltage signal is greater than the second target voltage signal; The first target voltage signal is subtracted from the first voltage difference to obtain the first regulated voltage signal, and / or the second target voltage signal is added to the first voltage difference to obtain the second regulated voltage signal.

7. The driving method for a display panel according to claim 6, characterized in that, The difference between the first regulating voltage signal and the second regulating voltage signal is 0.

8. The driving method for a display panel according to claim 6, characterized in that, Also includes: When the first target voltage signal is subtracted from the first voltage difference to obtain the first adjustment voltage signal, a compensation value is calculated based on the actual brightness and target brightness when the first adjustment voltage signal is transmitted to the first sub-pixel. A third relationship is established based on multiple gray levels and the corresponding compensation values ​​at each gray level; Based on the third relationship, the compensation value at the target gray level is obtained, and the luminous brightness of the first sub-pixel is adjusted. When the second target voltage signal is added to the first voltage difference to obtain the second adjustment voltage signal, a compensation value is calculated based on the actual brightness and target brightness when the second adjustment voltage signal is transmitted to the second sub-pixel; A fourth relationship is established based on multiple gray levels and the corresponding compensation values ​​at each gray level; Based on the fourth relationship, the compensation value at the target grayscale is obtained, and the luminance of the second sub-pixel is adjusted.

9. A display panel, characterized in that, The display panel is driven by the driving method described in any one of claims 1-8.

10. A display device, characterized in that, The display device includes the display panel as described in claim 9.

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