Display panel control method and device, electronic device, and storage medium

Abstract

The present disclosure relates to a display panel control method and device, electronic equipment and storage medium. The method comprises: obtaining a backlight brightness currently displayed by the display panel; in a case where the backlight brightness is less than a preset brightness threshold, reducing a value of a display parameter of the display panel according to the backlight brightness, wherein the display parameter at least comprises a resolution; and controlling the display panel to work according to the reduced value of the display parameter. Through the method, the display effect of the display panel under low backlight brightness can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a control method and apparatus for a display panel, an electronic device, and a storage medium. Background Technology

[0002] Currently, display panels such as mobile phone screens and computer monitors typically use pulse-width modulation (PWM) or direct current (DC) power supply methods to adjust display brightness when the backlight brightness is low, such as less than 100 nits. PWM technology adjusts display brightness by controlling the display panel to flicker rapidly using a PWM signal; frequent flickering can easily cause eye fatigue and accelerate vision aging. DC technology reduces display brightness by lowering the power supply voltage to the display panel; however, the organic materials in the display panel emit light unstably at low voltages, easily leading to ghosting and resulting in poor display quality. Summary of the Invention

[0003] This disclosure provides a control method and apparatus for a display panel, an electronic device, and a storage medium.

[0004] According to a first aspect of the present disclosure, a method for controlling a display panel is provided, comprising:

[0005] Obtain the current backlight brightness displayed on the display panel;

[0006] If the backlight brightness is less than a preset brightness threshold, the display parameters of the display panel are reduced according to the backlight brightness; wherein, the display parameters include at least resolution;

[0007] The display panel is controlled to operate based on the reduced values ​​of the display parameters.

[0008] In some embodiments, the method further includes:

[0009] Obtain the resolutions supported by the display panel;

[0010] A first brightness threshold is determined based on the resolution supported by the display panel; wherein the first brightness threshold is less than the preset brightness threshold.

[0011] The step of reducing the display parameters of the display panel based on the backlight brightness includes:

[0012] Based on the first brightness threshold and the backlight brightness, the values ​​of the display parameters of the display panel are reduced.

[0013] In some embodiments, the display panel supports at least two resolutions; determining the first brightness threshold based on the resolutions supported by the display panel includes:

[0014] The first brightness threshold is determined by multiplying the ratio of the minimum value among the at least two resolutions to the maximum value among the at least two resolutions with a preset brightness threshold.

[0015] In some embodiments, reducing the value of the display parameters of the display panel based on the first brightness threshold and the backlight brightness includes:

[0016] If the backlight brightness is greater than the first brightness threshold but less than the preset brightness threshold, the resolution of the display panel is reduced according to the backlight brightness.

[0017] In some embodiments, reducing the resolution based on the backlight brightness includes:

[0018] A first resolution coefficient is determined based on the backlight brightness; wherein the first resolution coefficient is positively correlated with the backlight brightness.

[0019] The reduced resolution is determined by multiplying the resolution by the first resolution coefficient.

[0020] In some embodiments, the display parameters further include the grayscale values ​​of each displayed pixel;

[0021] The step of reducing the display parameters of the display panel based on the first brightness threshold and the backlight brightness includes:

[0022] If the backlight brightness is less than or equal to the first brightness threshold, the resolution currently displayed by the display panel is reduced according to the first brightness threshold.

[0023] Based on the first brightness threshold and the backlight brightness, the grayscale value of each pixel currently displayed on the display panel is reduced.

[0024] In some embodiments, reducing the resolution currently displayed by the display panel according to the first brightness threshold includes:

[0025] A second resolution coefficient is determined based on the first brightness threshold; wherein the second resolution coefficient is positively correlated with the first brightness threshold.

[0026] The reduced resolution is determined by multiplying the resolution by the second resolution coefficient.

[0027] In some embodiments, reducing the grayscale value of each pixel currently displayed on the display panel based on the first brightness threshold and the backlight brightness includes:

[0028] For each pixel's grayscale value, determine the sum of the grayscale value and the backlight brightness;

[0029] The product of the difference between the sum and the first brightness threshold and the preset grayscale coefficient is determined as the reduced grayscale value.

[0030] According to a second aspect of the present disclosure, a control device for a display panel is provided, comprising:

[0031] The first acquisition module is used to acquire the backlight brightness currently displayed by the display panel;

[0032] A reduction module is used to reduce the value of the display parameters of the display panel according to the backlight brightness when the backlight brightness is less than a preset brightness threshold; wherein the display parameters include at least resolution;

[0033] The control module is used to control the operation of the display panel based on the reduced values ​​of the display parameters.

[0034] In some embodiments, the apparatus further includes:

[0035] The second acquisition module is used to acquire the resolutions supported by the display panel;

[0036] The determining module is configured to determine a first brightness threshold based on the resolution supported by the display panel; wherein the first brightness threshold is less than the preset brightness threshold;

[0037] The reduction module is used to reduce the value of the display parameters of the display panel according to the first brightness threshold and the backlight brightness.

[0038] In some embodiments, the display panel supports at least two resolutions; the determining module is configured to determine the first brightness threshold by multiplying the ratio of the minimum value of the at least two resolutions to the maximum value of the at least two resolutions with a preset brightness threshold.

[0039] In some embodiments, the reduction module is configured to reduce the resolution currently displayed on the display panel based on the backlight brightness when the backlight brightness is greater than the first brightness threshold and less than the preset brightness threshold.

[0040] In some embodiments, the reduction module is configured to determine a first resolution coefficient based on the backlight brightness; wherein the first resolution coefficient is positively correlated with the backlight brightness; and the product of the resolution and the first resolution coefficient is determined as the reduced resolution.

[0041] In some embodiments, the display parameters further include the grayscale values ​​of each displayed pixel;

[0042] The reduction module is configured to, when the backlight brightness is less than or equal to the first brightness threshold, reduce the resolution currently displayed by the display panel according to the first brightness threshold; and reduce the grayscale value of each pixel currently displayed by the display panel according to the first brightness threshold and the backlight brightness.

[0043] In some embodiments, the reduction module is configured to determine a second resolution coefficient based on the first brightness threshold; wherein the second resolution coefficient is positively correlated with the first brightness threshold; and the product of the resolution and the second resolution coefficient is determined as the reduced resolution.

[0044] In some embodiments, the reduction module is configured to determine the sum of the grayscale value and the backlight brightness for each pixel; and to determine the reduced grayscale value by multiplying the difference between the sum and the first brightness threshold by a preset grayscale coefficient.

[0045] According to a third aspect of the present disclosure, an electronic device is provided, comprising:

[0046] A processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the method as described in the first aspect above.

[0047] According to a fourth aspect of the present disclosure, a storage medium is provided, comprising:

[0048] When the instructions in the storage medium are executed by the processor of the electronic device, the method described in the first aspect above can be performed.

[0049] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0050] In the embodiments of this disclosure, when the backlight brightness of the display panel is low, the resolution value of the display panel is reduced at least. Since the reduction in resolution is usually controlled by, for example, turning off some light-emitting units, the overall brightness of the display panel can be reduced by reducing the number of light-emitting units included in the display panel, thereby making the brightness of the display panel match the current backlight brightness and improving the display effect.

[0051] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0052] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0053] Figure 1 This is a schematic diagram of a PWM-based display brightness adjustment technique.

[0054] Figure 2 This is a flowchart illustrating a method for adjusting display brightness using DC in related technologies.

[0055] Figure 3 This is a grayscale schematic diagram shown in an embodiment of the present disclosure.

[0056] Figure 4 This is a flowchart example of a control method for a display panel shown in an embodiment of the present disclosure. Figure 1 .

[0057] Figure 5 This is a flowchart example of a control method for a display panel shown in an embodiment of the present disclosure. Figure 2 .

[0058] Figure 6 This is a diagram of a control device for a display panel according to an embodiment of this disclosure.

[0059] Figure 7 This is a block diagram of an electronic device illustrated in an embodiment of this disclosure. Detailed Implementation

[0060] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0061] In one related technology, when the backlight brightness of the display panel is high (e.g., the backlight brightness is greater than 100 nits), the display brightness of the display panel is adjusted by DC method; and when the backlight brightness of the display panel is low (e.g., the backlight brightness is between 5 and 100 nits), the display brightness of the display panel is adjusted by PWM method. Figure 1 This diagram illustrates a PWM-based method for adjusting display brightness, as shown in the related art. Figure 1As shown, the duty cycles of the three PWM signal waveforms are 100%, 50%, and 30%, respectively. The display brightness of the display panel corresponds to the maximum brightness at a 100% duty cycle, the medium brightness at a 50% duty cycle, and the low brightness at a 30% duty cycle.

[0062] Understandably, PWM technology adjusts the display brightness of a screen by changing the duty cycle of the PWM signal. The screen is controlled to be on within the time range corresponding to the pulse width, and off within the time range not corresponding to the pulse width. Thus, the screen rapidly alternates between bright and dark under the drive of the PWM signal. Because the human eye's visual persistence makes it difficult to perceive the rapid flickering, it perceives the screen as continuously lit. However, prolonged rapid bright-dark alternation at low brightness can still damage the eyes and accelerate vision aging.

[0063] In another related technology, the display brightness of the display panel is adjusted by DC to match the current backlight brightness. For example, when the backlight brightness of the display panel is low, the power supply voltage of the display panel is adjusted to a low voltage. The organic materials in the display panel emit light unstably under low voltage, which can easily lead to ghosting and affect the display effect.

[0064] Figure 2 This diagram illustrates a flowchart of a method for DC-adjusted display brightness in related technologies. Figure 2 It can be seen that the method includes:

[0065] S21. Determine if the backlight brightness is less than 100 nits;

[0066] In this example, it is determined whether the backlight brightness of the display panel is less than 100 nits. If the backlight brightness is less than 100 nits (low brightness), step S22 is executed; otherwise, the process ends.

[0067] S22. Reduce the grayscale value of each pixel to (grayscale value - backlight brightness) * a.

[0068] In this example, when the backlight brightness of the display panel is less than 100 nits, the grayscale value of each pixel currently displayed on the display panel will be reduced to (grayscale value - backlight brightness) * a, where a takes a value from 0 to 1; the grayscale division can be found in [reference needed]. Figure 3 The grayscale diagram shown is shown below. Figure 3 In this model, the brightness variation between the brightest and darkest areas is divided into 256 gray levels, with each gray level corresponding to a brightness level. The darkest gray level has a value of 0, and the brightest gray level has a value of 255.

[0069] Understandably, related technologies utilize DC technology to control the display panel's brightness. When the backlight brightness of the display panel is low, the grayscale values ​​of each pixel are reduced, making the grayscale values ​​of each pixel more compatible with the low backlight brightness. This also reduces eye strain caused by flickering from PWM technology. However, because the degree of grayscale value reduction varies among different pixels, the resulting grayscale value distribution is uneven, which can easily lead to banding phenomena such as water ripples due to uneven brightness.

[0070] In this regard, embodiments of the present disclosure provide a method for controlling a display panel. The executing entity can be a control device, such as a terminal device equipped with a display panel. The terminal device can be a mobile phone, tablet computer, wearable device, vehicle-mounted terminal, television set, or other display terminal. In some possible implementations, the display panel control method can be implemented by a processor calling computer-readable instructions stored in memory.

[0071] Figure 4 This is a flowchart example of a control method for a display panel shown in an embodiment of the present disclosure. Figure 1 ,like Figure 4 As shown, the method includes the following steps:

[0072] S41. Obtain the backlight brightness currently displayed on the display panel;

[0073] S42. If the backlight brightness is less than a preset brightness threshold, reduce the value of the display parameters of the display panel according to the backlight brightness; wherein the display parameters include at least resolution;

[0074] S43. Control the display panel to work according to the reduced value of the display parameter.

[0075] In this embodiment of the disclosure, the display panel may be made of organic materials such as organic light-emitting diode (OLED), active-matrix organic light-emitting diode (AOLED), active-matrix organic light-emitting diode, or active-matrix organic light-emitting diode (AMOLED).

[0076] In step S41, the control device can directly obtain the backlight brightness of the mounted display panel; wherein, the backlight brightness currently displayed by the display panel may be the brightness indicated by the user's operation command when adjusting the backlight brightness, or the brightness that matches the ambient light energy sensed by a light sensor, etc., and this disclosure does not limit it.

[0077] It should be noted that, in the embodiments of this disclosure, DC technology is used to reduce the display parameters of the display panel according to the backlight brightness under low backlight brightness, so as to change the perceived brightness of the display panel when displaying images, thereby improving the display effect.

[0078] In step S42, a preset brightness threshold, such as 100 nit, indicates that the backlight brightness of the display panel is low when the backlight brightness is less than the preset brightness threshold, and high when the backlight brightness is greater than or equal to the preset brightness threshold.

[0079] In this embodiment of the present disclosure, after obtaining the current backlight brightness of the display panel, the control device compares the backlight brightness with a preset brightness threshold to determine whether the backlight brightness of the display panel is low. If the backlight brightness is less than the preset brightness threshold, i.e., the backlight brightness of the display panel is low, the control device reduces the value of the display parameters of the display panel according to the backlight brightness. Thus, in step S43, the control device controls the display panel to work according to the reduced display parameter value. The display parameters include at least resolution and may also include the grayscale value of each pixel currently displayed on the display panel.

[0080] In some embodiments, when the backlight brightness of the display panel is low, the control device can reduce the current resolution of the display panel to a lower resolution supported by the display panel. For example, if the display panel supports 2K resolution and 1080p resolution, and the current resolution of the display panel is 2K, the resolution of the display panel can be reduced to 1080p.

[0081] In some embodiments, when the backlight brightness of the display panel is low, the control device can reduce the current display resolution to a resolution corresponding to the backlight brightness, etc., according to a preset mapping relationship between backlight brightness and resolution.

[0082] In other embodiments, when the backlight brightness of the display panel is low, the control device can further reduce the grayscale value of each pixel currently displayed, based on the aforementioned method of reducing the resolution currently displayed by the display panel.

[0083] It is understood that, in the embodiments of this disclosure, when the backlight brightness of the display panel is low, at least the resolution value of the display panel is reduced. Since the reduction of resolution is usually controlled by, for example, turning off some light-emitting units, by reducing the number of light-emitting units included in the display panel, the overall brightness of the display panel can be reduced, thereby making the brightness of the display panel match the current backlight brightness and improving the display effect.

[0084] Since most high-resolution mobile phones on the market support resolution switching, users can adjust the display resolution according to their preferences. 2K resolution offers excellent display quality, while 1080P resolution also provides good display effects. Therefore, this embodiment of the disclosure reduces the eye strain caused by displays using PWM technology by lowering the current display resolution, while maintaining display quality and reducing power consumption. Furthermore, compared to simply reducing the power supply voltage, it also reduces the number of unstable light-emitting units under low backlight brightness, thereby reducing ghosting. Figure 2 Directly reducing grayscale can reduce banding phenomena such as water ripples and improve the display effect of the display panel.

[0085] In some embodiments, the method further includes:

[0086] Obtain the resolutions supported by the display panel;

[0087] A first brightness threshold is determined based on the resolution supported by the display panel; wherein the first brightness threshold is less than the preset brightness threshold.

[0088] The step of reducing the display parameters of the display panel based on the backlight brightness includes:

[0089] Based on the first brightness threshold and the backlight brightness, the values ​​of the display parameters of the display panel are reduced.

[0090] In this embodiment of the disclosure, the control device obtains the resolution supported by the display panel, such as 720P (1280*720 pixels), 1080P (1920*1080 pixels), 2K (3200*1440 pixels) and 4K (3840*2160 pixels).

[0091] In this embodiment of the present disclosure, after obtaining the resolution supported by the display panel, the control device determines a first brightness threshold based on the resolution supported by the display panel, wherein the first brightness threshold is less than a preset brightness threshold.

[0092] In some embodiments, when the currently displayed resolution is not the maximum resolution supported by the display panel, the first brightness threshold can be determined by multiplying the ratio of the number of pixels corresponding to the currently displayed resolution to the number of pixels corresponding to the maximum resolution supported by the display panel, and a preset brightness threshold. When the currently displayed resolution is the maximum resolution supported by the display panel, the first brightness threshold is determined by multiplying the preset brightness threshold and a preset brightness coefficient, wherein the preset brightness coefficient is less than 1.

[0093] In other embodiments, the display panel supports at least two resolutions; determining the first brightness threshold based on the resolutions supported by the display panel includes:

[0094] The first brightness threshold is determined by multiplying the ratio of the minimum value among the at least two resolutions to the maximum value among the at least two resolutions with a preset brightness threshold.

[0095] In this embodiment of the disclosure, the display panel supports at least two resolutions; the verification device can also determine the first brightness threshold by multiplying the ratio of the number of pixels corresponding to the minimum resolution supported by the display panel to the number of pixels corresponding to the maximum resolution by a preset brightness threshold. Taking a minimum resolution of 1080P (1920*1080 pixels), a maximum resolution of 2K (3200*1440 pixels), and a preset brightness threshold of 100 nits as an example, the first brightness threshold can be ((1920*1080) / (3200*1440))*100, i.e., 45 nits.

[0096] It is understood that in this embodiment of the present disclosure, the product of the ratio of the minimum resolution supported by the display panel to the maximum resolution and the preset brightness threshold is used to determine the first brightness threshold. Since the resolution supported by the display panel is an inherent attribute, compared with the aforementioned method of determining the first brightness threshold by multiplying the ratio of the number of pixels corresponding to the current display resolution to the number of pixels corresponding to the maximum resolution supported by the display panel and the preset brightness threshold, the control device in this embodiment of the present disclosure only needs to determine the first brightness threshold once, thereby reducing the consumption of computing resources.

[0097] In this embodiment of the present disclosure, after determining a first brightness threshold, the control device reduces the value of the display parameters of the display panel based on the first brightness threshold and the backlight brightness.

[0098] In some embodiments, the control device can control the degree of reduction of display parameters based on the relationship between the current backlight brightness and a first brightness threshold and a preset brightness threshold. For example, it can control the degree of resolution reduction when the backlight brightness is less than or equal to the first brightness threshold, and the degree of resolution reduction when the backlight brightness is greater than the first brightness threshold and less than the preset brightness threshold.

[0099] In addition, the control device can adjust the degree of reduction of different display parameters according to the relationship between the current backlight brightness and the first brightness threshold and the preset brightness threshold.

[0100] In some embodiments, reducing the value of the display parameters of the display panel based on the first brightness threshold and the backlight brightness includes:

[0101] If the backlight brightness is greater than the first brightness threshold but less than the preset brightness threshold, the resolution of the display panel is reduced according to the backlight brightness.

[0102] In this embodiment of the disclosure, when the backlight brightness is greater than a first brightness threshold and less than a preset brightness threshold, the control device can reduce the current display resolution of the display panel based on the aforementioned method and the backlight brightness, thereby improving the display effect of the display panel.

[0103] In some embodiments, reducing the resolution based on the backlight brightness includes:

[0104] A first resolution coefficient is determined based on the backlight brightness; wherein the first resolution coefficient is positively correlated with the backlight brightness.

[0105] The reduced resolution is determined by multiplying the resolution by the first resolution coefficient.

[0106] In this embodiment of the disclosure, when the backlight brightness is greater than a first brightness threshold and less than a preset brightness threshold, the control device determines a first resolution coefficient based on the backlight brightness. For example, based on the preset correspondence between backlight brightness and resolution coefficient, the resolution coefficient corresponding to the backlight brightness is determined as the first resolution coefficient; wherein, the resolution coefficient is less than 1, and the first resolution coefficient is positively correlated with the backlight brightness.

[0107] In addition, the control device can also determine the ratio of the backlight brightness to the preset brightness threshold as the first resolution coefficient. Since the preset brightness threshold is set in advance, the first resolution coefficient determined based on the scheme in this embodiment is also positively correlated with the backlight brightness.

[0108] In this embodiment of the present disclosure, after determining the first resolution coefficient, the control device multiplies the first resolution coefficient by the resolution currently displayed on the display panel to determine the reduced resolution, and controls the display panel to display based on the reduced resolution.

[0109] It is understood that the first resolution coefficient determined in the embodiments of this disclosure is positively correlated with the backlight brightness, and the first resolution coefficient is less than 1. Therefore, the degree of reduction in the resolution currently displayed by the display panel is negatively correlated with the backlight brightness. That is, the smaller the backlight brightness, the greater the degree of resolution reduction. This can improve the compatibility between the reduced resolution and the current backlight brightness, thereby improving the display effect of the display panel.

[0110] In some embodiments, the display parameters further include the grayscale values ​​of each displayed pixel;

[0111] The step of reducing the display parameters of the display panel based on the first brightness threshold and the backlight brightness includes:

[0112] If the backlight brightness is less than or equal to the first brightness threshold, the resolution currently displayed by the display panel is reduced according to the first brightness threshold.

[0113] Based on the first brightness threshold and the backlight brightness, the grayscale value of each pixel currently displayed on the display panel is reduced.

[0114] In this embodiment of the disclosure, when the backlight brightness of the display panel is low, the reduced display parameter values ​​also include the grayscale values ​​of each displayed pixel.

[0115] In this embodiment of the invention, when the backlight brightness is less than or equal to a first brightness threshold, the control device, in addition to reducing the resolution currently displayed on the display panel according to the first brightness threshold, further reduces the grayscale value of each pixel currently displayed on the display panel according to the first brightness threshold and the backlight brightness.

[0116] It is understood that, in embodiments of this disclosure, when the backlight brightness of the display panel is very low (less than or equal to a first brightness threshold), the display resolution and the grayscale value of each pixel are reduced, so that the color presentation of each pixel is better matched with the lower backlight brightness and resolution. Furthermore, compared to reducing the grayscale value of pixels when the backlight brightness of the display panel is lower than a preset brightness threshold, embodiments of this disclosure reduce the grayscale value of each pixel with even lower backlight brightness. Since the grayscale value of each pixel is smaller when the backlight brightness is less than or equal to the first brightness threshold, the degree of reduction in each grayscale value is smaller, resulting in a more uniform distribution of the reduced grayscale values, thereby reducing banding and improving the display effect.

[0117] In some embodiments, when the backlight brightness is less than or equal to a first brightness threshold, as described above, the control device may reduce the current display resolution to a lower resolution supported by the display panel; or, according to a preset mapping relationship between backlight brightness and resolution, reduce the current display resolution to a resolution corresponding to the backlight brightness, thereby improving the display effect of the display panel.

[0118] In some embodiments, reducing the resolution currently displayed by the display panel according to the first brightness threshold includes:

[0119] A second resolution coefficient is determined based on the first brightness threshold; wherein the second resolution coefficient is positively correlated with the first brightness threshold.

[0120] The reduced resolution is determined by multiplying the resolution by the second resolution coefficient.

[0121] In this embodiment, the control device can determine a second resolution coefficient based on a first brightness threshold. For example, the ratio of the first brightness threshold to a preset brightness threshold can be used as the second resolution coefficient, thus the second resolution coefficient is positively correlated with the first brightness threshold. After determining the second resolution coefficient, the product of the resolution and the second resolution coefficient is determined as the reduced resolution, and the display panel is controlled to display according to the reduced resolution.

[0122] It is understandable that, compared to the aforementioned method where the ratio of backlight brightness to preset brightness threshold is determined as the first resolution coefficient when the backlight brightness is greater than the first brightness threshold but less than the preset brightness threshold, the smaller the backlight brightness, the smaller the percentage reduction in resolution (first resolution coefficient). In this embodiment, the ratio of the first brightness threshold to the preset brightness threshold is determined as the second resolution coefficient. That is, when the backlight brightness is less than or equal to the first brightness threshold, the percentage reduction in resolution is the same (e.g., 45 / 100), so that the resolution reduction is not too small when the backlight brightness is very low (e.g., 10 nits), which would affect the display effect. Therefore, in the case where the backlight brightness is less than or equal to the first brightness threshold, this embodiment reduces the current display resolution of the display panel according to the second resolution coefficient, which can improve the display effect.

[0123] In this embodiment of the disclosure, when the backlight brightness is less than or equal to a first brightness threshold, the control device reduces the resolution using the aforementioned method while further reducing the grayscale value of each currently displayed pixel.

[0124] In some embodiments, when the control device reduces the grayscale value of each currently displayed pixel, it can determine the grayscale coefficient corresponding to the first brightness threshold according to the preset correspondence between the first brightness threshold and the grayscale coefficient, and multiply the grayscale value of each pixel by the grayscale coefficient; wherein the grayscale coefficient is less than 1.

[0125] As mentioned above, the first brightness threshold is positively correlated with the backlight brightness, and the grayscale coefficient is also positively correlated with the first brightness threshold. Therefore, the grayscale coefficient is positively correlated with the backlight brightness. As a result, the smaller the backlight brightness, the smaller the degree of grayscale reduction, which allows the display panel to display each pixel with a grayscale value that is more compatible with the backlight brightness, thereby improving the display effect.

[0126] In some embodiments, reducing the grayscale value of each pixel currently displayed on the display panel based on the first brightness threshold and the backlight brightness includes:

[0127] For each pixel's grayscale value, determine the sum of the grayscale value and the backlight brightness;

[0128] The product of the difference between the sum and the first brightness threshold and the preset grayscale coefficient is determined as the reduced grayscale value.

[0129] In this embodiment of the disclosure, the preset grayscale coefficient is less than 1; when the backlight brightness is less than or equal to the first brightness threshold, the control device calculates the sum of the grayscale value and the backlight brightness for each pixel currently displayed on the display panel, and multiplies the difference between the sum and the first brightness threshold with the preset grayscale coefficient to determine the reduced grayscale value.

[0130] Understandably, since the backlight brightness is less than or equal to the first brightness threshold, the difference between the sum of the pixel's grayscale value and the backlight brightness and the first brightness threshold is less than the grayscale value itself. Furthermore, the lower the backlight brightness, the smaller the reduced grayscale value. Further, multiplying this difference by a preset grayscale coefficient to determine the reduced grayscale value improves the matching between the reduced grayscale value and the backlight brightness, allowing the display panel to display pixels with grayscale values ​​more suited to the backlight brightness, thereby improving the display effect. In addition, users can adjust the preset grayscale coefficient using a control device, thereby adjusting the degree of grayscale value reduction for each pixel and increasing the flexibility of grayscale value adjustment.

[0131] Figure 5 This illustration shows a flowchart of a control method for a display panel provided in an embodiment of the present disclosure. Figure 2 ,Depend on Figure 5 It can be seen that the method includes:

[0132] S51. Determine whether the backlight brightness is greater than 45 nits and less than 100 nits;

[0133] In this embodiment of the disclosure, the backlight brightness is the backlight brightness of the aforementioned display panel; 100 nit corresponds to the aforementioned preset brightness threshold; 45 nit corresponds to the aforementioned first brightness threshold, which can be determined as the first brightness threshold by multiplying the ratio of the number of pixels in 1080p to the number of pixels in 2k by the preset brightness threshold when the resolution supported by the display panel includes 1080p (1920*1080 pixels) and 2k (3200*1440 pixels).

[0134] If the backlight brightness is greater than 45 nits and less than 100 nits, proceed to step S52; otherwise, proceed to step S53.

[0135] S52, Reduce the resolution to resolution * backlight brightness / 100;

[0136] In this embodiment of the disclosure, when the backlight brightness is greater than 45 nits and less than 100 nits, the resolution is reduced to resolution * backlight brightness / 100, where backlight brightness / 100 corresponds to the aforementioned first resolution coefficient.

[0137] S53. Determine whether the backlight brightness is less than or equal to 45 nits;

[0138] In this embodiment of the disclosure, it is determined whether the backlight brightness is less than or equal to 45 nits. If the backlight brightness is less than or equal to 45 nits, step S54 is executed; otherwise, the process ends.

[0139] S54, Reduce the resolution to *45 / 100;

[0140] In this embodiment of the disclosure, when the backlight brightness is less than or equal to 45 nits, the resolution is reduced to resolution * 45 / 100, where 45 / 100 corresponds to the aforementioned second resolution coefficient.

[0141] S55, reduce the grayscale value of each pixel to (grayscale value + backlight brightness - 45) * a.

[0142] In this embodiment of the disclosure, when the backlight brightness is less than or equal to 45 nits, the grayscale value of each pixel currently displayed on the display panel is reduced to (grayscale value + backlight brightness - 45) * a, where a corresponds to the aforementioned preset grayscale coefficient, and the value range of a is 0 to 1.

[0143] It is understood that, in the embodiments of this disclosure, when the backlight brightness of the display panel is greater than 45 nits and less than 100 nits, the control device reduces the resolution of the display panel, which can reduce the eye damage caused by display using PWM technology, while taking into account the display effect and the power consumption of the display panel; and when the backlight brightness is less than 45 nits, it reduces the current display resolution of the display panel and the grayscale value of each pixel, thereby reducing the ghosting phenomenon caused by the unstable light emission of organic materials in the display panel under low backlight brightness, and further improving the display effect of the display panel under low backlight brightness.

[0144] Figure 6 This diagram illustrates a control device for a display panel according to an embodiment of the present disclosure, comprising... Figure 6 It can be seen that the device includes:

[0145] The first acquisition module 601 is used to acquire the backlight brightness currently displayed by the display panel;

[0146] The reduction module 602 is used to reduce the value of the display parameters of the display panel according to the backlight brightness when the backlight brightness is less than a preset brightness threshold; wherein the display parameters include at least resolution;

[0147] The control module 603 is used to control the operation of the display panel according to the reduced value of the display parameters.

[0148] In some embodiments, the apparatus further includes:

[0149] The second acquisition module 604 is used to acquire the resolution supported by the display panel;

[0150] The determining module 605 is used to determine a first brightness threshold based on the resolution supported by the display panel; wherein the first brightness threshold is less than the preset brightness threshold;

[0151] The reduction module 602 is used to reduce the value of the display parameters of the display panel according to the first brightness threshold and the backlight brightness.

[0152] In some embodiments, the display panel supports at least two resolutions; the determining module 605 is used to determine the first brightness threshold by multiplying the ratio of the minimum value of the at least two resolutions to the maximum value of the at least two resolutions with a preset brightness threshold.

[0153] In some embodiments, the reduction module 602 is used to reduce the resolution currently displayed on the display panel according to the backlight brightness when the backlight brightness is greater than the first brightness threshold and less than the preset brightness threshold.

[0154] In some embodiments, the reduction module 602 is configured to determine a first resolution coefficient based on the backlight brightness; wherein the first resolution coefficient is positively correlated with the backlight brightness; and the product of the resolution and the first resolution coefficient is determined as the reduced resolution.

[0155] In some embodiments, the display parameters further include the grayscale values ​​of each displayed pixel;

[0156] The reduction module 602 is used to reduce the resolution currently displayed by the display panel according to the first brightness threshold when the backlight brightness is less than or equal to the first brightness threshold; and to reduce the grayscale value of each pixel currently displayed by the display panel according to the first brightness threshold and the backlight brightness.

[0157] In some embodiments, the reduction module 602 is configured to determine a second resolution coefficient based on the first brightness threshold; wherein the second resolution coefficient is positively correlated with the first brightness threshold; and the product of the resolution and the second resolution coefficient is determined as the reduced resolution.

[0158] In some embodiments, the reduction module 602 is used to determine the sum of the grayscale value and the backlight brightness for each pixel; and to determine the reduced grayscale value by multiplying the difference between the sum and the first brightness threshold with a preset grayscale coefficient.

[0159] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0160] Figure 7 This is a block diagram illustrating an electronic device 800 according to an embodiment of this disclosure. For example, the electronic device 800 may be a mobile phone, a mobile computer, etc.

[0161] Reference Figure 6 The electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0162] Processing component 802 typically controls the overall operation of electronic device 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0163] Memory 804 is configured to store various types of data to support the operation of electronic device 800. Examples of such data include instructions for any application or method operating on electronic device 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0164] Power supply component 806 provides power to various components of electronic device 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 800.

[0165] Multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0166] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when electronic device 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0167] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0168] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of electronic device 800. For example, sensor assembly 814 can detect the on / off state of electronic device 800, the relative positioning of components such as the display and keypad of electronic device 800, changes in position of electronic device 800 or a component of electronic device 800, the presence or absence of user contact with electronic device 800, orientation or acceleration / deceleration of electronic device 800, and temperature changes of electronic device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0169] Communication component 816 is configured to facilitate wired or wireless communication between electronic device 800 and other devices. Electronic device 800 can access wireless networks based on communication standards, such as Wi-Fi, 4G, or 5G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0170] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0171] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of an electronic device 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0172] A non-transitory computer-readable storage medium is provided, which, when the instructions in the storage medium are executed by a processor of an electronic device, enables the execution of the control method for the display panel of this disclosure.

[0173] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the foregoing claims.

[0174] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A control method of a display panel, characterized by, The method comprises: obtaining a backlight brightness currently displayed by the display panel; obtaining resolutions supported by the display panel; the display panel supports at least two resolutions; determining a product of a ratio of a minimum value in the at least two resolutions to a maximum value in the at least two resolutions and a preset brightness threshold value as a first brightness threshold value; wherein the first brightness threshold value is smaller than the preset brightness threshold value; in a case where the backlight brightness is greater than the first brightness threshold value and smaller than the preset brightness threshold value, reducing a value of a display parameter of the display panel according to the backlight brightness; wherein the display parameter at least comprises a resolution; controlling the display panel to work according to the reduced value of the display parameter.

2. The method of claim 1, wherein, The reducing of the resolution of the display panel according to the backlight brightness comprises: determining a first resolution coefficient according to the backlight brightness; wherein the first resolution coefficient is positively correlated with the backlight brightness; determining a product of the resolution and the first resolution coefficient as the reduced resolution.

3. The method of claim 1, wherein, The display parameter further comprises a gray scale value of each pixel point displayed; The method further comprises: in a case where the backlight brightness is smaller than or equal to the first brightness threshold value, reducing a resolution currently displayed by the display panel according to the first brightness threshold value; reducing the gray scale value of each pixel point currently displayed by the display panel according to the first brightness threshold value and the backlight brightness.

4. The method of claim 3, wherein, The reducing of the resolution currently displayed by the display panel according to the first brightness threshold value comprises: determining a second resolution coefficient according to the first brightness threshold value; wherein the second resolution coefficient is positively correlated with the first brightness threshold value; determining a product of the resolution and the second resolution coefficient as the reduced resolution.

5. The method of claim 3, wherein, The reducing of the gray scale value of each pixel point currently displayed by the display panel according to the first brightness threshold value and the backlight brightness comprises: for the gray scale value of each pixel point, determining a sum value of the gray scale value and the backlight brightness; determining a product of a difference value of the sum value and the first brightness threshold value and a preset gray scale coefficient as the reduced gray scale value.

6. A control device of a display panel, characterized by comprising: The apparatus comprises: a first obtaining module, configured to obtain a backlight brightness currently displayed by the display panel; a second obtaining module, configured to obtain resolutions supported by the display panel; the display panel supports at least two resolutions; a determining module, configured to determine a product of a ratio of a minimum value in the at least two resolutions to a maximum value in the at least two resolutions and a preset brightness threshold value as a first brightness threshold value; wherein the first brightness threshold value is smaller than the preset brightness threshold value; a reducing module, configured to, in a case where the backlight brightness is greater than the first brightness threshold value and smaller than the preset brightness threshold value, reduce a value of a display parameter of the display panel according to the backlight brightness; wherein the display parameter at least comprises a resolution; a control module, configured to control the display panel to work according to the reduced value of the display parameter.

7. An electronic device, comprising: comprise: a processor; a memory for storing processor-executable instructions; The processor is configured to perform the method of any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium, comprising: When the instructions in the storage medium are executed by the processor of the electronic device, the method of any one of claims 1 to 5 can be performed.

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