Display panel, its brightness adjustment method, and display device

Abstract

Embodiments of the present application provide a display panel, a brightness adjustment method thereof, and a display device. The display panel includes a display area and a data driver arranged along a first direction; along the first direction, the display area includes at least two partitions, the i-th partition is located on the side away from the data driver of the j-th partition, and the driving ability of the data signal transmitted by the data driver to the i-th partition is greater than the driving ability of the data signal transmitted by the data driver to the j-th partition, where both i and j are positive integers. Embodiments of the present application can ensure the brightness uniformity of different partitions in the display panel and reduce the power consumption of the display panel.

Description

Technical Field

[0001] This application belongs to the field of display technology, and particularly relates to a display panel, a brightness adjustment method thereof, and a display device. Background Art

[0002] When a display panel displays, a data driver provides a data signal to sub-pixels to display an image. However, the inventors of this application have found that as the distance from the data driver to the sub-pixels increases, the driving ability of the data signal output by the data driver will decrease, ultimately resulting in differences in brightness in different regions of the display panel, affecting the display effect.

[0003] In related technologies, in order to ensure that the brightness of each region in the display panel can reach the expected brightness, the driving ability of the data signal output by the data driver is usually increased blindly, which greatly increases the power consumption of the display panel. Summary of the Invention

[0004] Embodiments of this application provide a display panel, a brightness adjustment method thereof, and a display device, which can ensure the uniformity of brightness in different regions of the display panel and reduce the power consumption of the display panel.

[0005] In a first aspect, embodiments of this application provide a display panel. The display panel includes a display area and a data driver arranged along a first direction; along the first direction, the display area includes at least two partitions, the i-th partition is located on a side of the j-th partition away from the data driver, and the driving ability of the data signal transmitted by the data driver to the i-th partition is greater than the driving ability of the data signal transmitted by the data driver to the j-th partition, where both i and j are positive integers.

[0006] According to an implementation manner of the first aspect of this application, the data driver may include a data signal input terminal, an impedance adjustment circuit, and a data signal output terminal. The impedance adjustment circuit includes N cascaded impedance units and multiple switches. The first-stage impedance unit is electrically connected to the data signal input terminal, and each stage of impedance unit is electrically connected to the data signal output terminal through a separate switch, where N is an integer greater than 1; the display panel may further include a data signal line, and the data signal output terminal is electrically connected to the sub-pixels in the partition through the data signal line.

[0007] In this way, by controlling the on / off of the switches corresponding to the impedance units at all levels in the impedance adjustment circuit, the load size carried by the data signal input at the data signal input terminal is adjusted, the driving ability of the data signal output by the data driver is changed, and further the data driver can output data signals with different driving abilities to meet the needs of brightness adjustment.

[0008] According to any one of the foregoing implementation manners of the first aspect of this application, the impedance values of the N cascaded impedance units are the same.

[0009] In this way, since the impedance values of the N cascaded impedance units are the same, only the number of impedance units through which the data signal input at the data signal input end passes needs to be adjusted, so that the load carried by the data signal input at the data signal input end can be adjusted, thereby changing the driving ability of the data signal output by the data driver, and further enabling the data driver to output data signals with different driving abilities to meet the needs of brightness adjustment.

[0010] According to any of the foregoing embodiments of the first aspect of the present application, when the data driver provides a data signal to the i-th partition, the switch corresponding to the p-th stage impedance unit is turned on, and the switches corresponding to the other impedance units except the p-th stage impedance unit among the N cascaded impedance units are turned off, and the data signal output end provides the data signal to the i-th partition through the data signal line; when the data driver provides a data signal to the j-th partition, the switch corresponding to the q-th stage impedance unit is turned on, and the switches corresponding to the other impedance units except the q-th stage impedance unit among the N cascaded impedance units are turned off, and the data signal output end provides the data signal to the j-th partition through the data signal line; where p < q, and 1 ≤ p ≤ N, 1 ≤ q ≤ N.

[0011] In this way, when the switch corresponding to the p-th stage impedance unit is turned on, the load carried by the data signal in the impedance adjustment circuit is the sum of the impedance values of the first-stage impedance unit to the p-th stage impedance unit. When the switch corresponding to the q-th stage impedance unit is turned on, the load carried by the data signal in the impedance adjustment circuit is the sum of the impedance values of the first-stage impedance unit to the q-th stage impedance unit. Since p < q, the sum of the impedance values of the first-stage impedance unit to the p-th stage impedance unit is less than the sum of the impedance values of the first-stage impedance unit to the q-th stage impedance unit, and further makes the driving ability of the data signal received by the i-th partition greater than the driving ability of the data signal received by the j-th partition, compensating for the load difference between the i-th partition and the j-th partition, and further ensuring the brightness uniformity of the i-th partition and the j-th partition in the display panel.

[0012] According to any of the foregoing embodiments of the first aspect of the present application, each impedance unit includes a resistor and a capacitor, the capacitor in each impedance unit is grounded, and the resistors in the N cascaded impedance units are connected in series.

[0013] In this way, by increasing or decreasing the RC load, the driving ability of the data signal output by the data driver is changed, and further enables the data driver to output data signals with different driving abilities to meet the needs of brightness adjustment.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the data driver further includes a plurality of control signal terminals; the switch includes a switching transistor, the gate of the switching transistor is electrically connected to one of the control signal terminals, the first pole of the switching transistor is electrically connected to the corresponding impedance unit, and the second pole of the switching transistor is electrically connected to the data signal output terminal.

[0015] In this way, by only adjusting the cut-off level / conductive level output by the control signal terminal, the data driver can output data signals with different driving capabilities. Compared with other types of switches, the switching transistor has the advantages of small volume and easy control.

[0016] In a second aspect, an embodiment of the present application provides a method for adjusting the brightness of a display panel. The display panel includes a display area and a data driver arranged along a first direction. The display area includes at least two partitions arranged along the first direction. The last partition is located on the side of the first partition away from the data driver. The data driver includes M gears, and the driving capabilities of the data signals output in different gears are different, where M is a positive integer. The method includes: determining a first gear corresponding to the first partition and a second gear corresponding to the last partition according to the target brightness of the display area determined in advance. Both the first gear and the second gear are one of the M gears, and the driving capability of the data signal output in the second gear is greater than that of the data signal output in the first gear; dividing the area between the first partition and the last partition in the display area into a plurality of partitions according to the number of gears between the first gear and the second gear, and each partition corresponds to one gear; when providing a data signal to any i-th partition, providing the data signal to the i-th partition according to the gear corresponding to the i-th partition, where i is a positive integer.

[0017] According to an embodiment of the second aspect of the present application, based on the target brightness of the pre-determined display area, determine the first gear corresponding to the first partition and the second gear corresponding to the last partition, which may specifically include: providing a data signal to the first partition according to one of the M gears, and collecting the first measured brightness of the first partition; when the difference between the first measured brightness and the target brightness is greater than a preset threshold, adjust the gear for providing the data signal to the first partition, and collect the first measured brightness of the first partition again until the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold; determine the gear corresponding to the situation where the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold as the first gear; providing a data signal to the last partition according to one of the M gears, and collecting the second measured brightness of the last partition; when the difference between the second measured brightness and the target brightness is greater than a preset threshold, adjust the gear for providing the data signal to the last partition, and collect the second measured brightness of the last partition again until the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold; determine the gear corresponding to the situation where the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold as the second gear.

[0018] In this way, by determining the first gear corresponding to the first partition and the second gear corresponding to the last partition through a unified target brightness, when driving the first partition with the first gear and the last partition with the second gear, the brightness of the first partition and the last partition can be made consistent.

[0019] According to any of the foregoing embodiments of the second aspect of the present application, divide the area between the first partition and the last partition in the display area into multiple partitions according to the number of gears between the first gear and the second gear, which specifically includes: when the number of gears between the first gear and the second gear is x, divide the area between the first partition and the last partition in the display area into y partitions, where x≥y, and both x and y are positive integers.

[0020] In this way, by dividing multiple partitions according to the number of gears between the first gear and the second gear, each partition corresponds to one gear. Since the driving capabilities of the data signals output by different gears are different, differential compensation of different partitions can be achieved, ensuring the uniformity of the brightness of different partitions in the display panel and reducing the power consumption of the display panel.

[0021] According to any of the foregoing embodiments of the second aspect of the present application, x = y.

[0022] In this way, the number of partitions divided in the display area can be made as large as possible. The more the number of partitions, the more accurate the brightness compensation is usually, thereby improving the uniformity of the brightness of different partitions in the display panel.

[0023] According to any of the foregoing embodiments of the second aspect of the present application, the driving capabilities of the data signals output at different gears are different, including: the voltage values of the data signals output at different gears are the same, and the rise time or fall time of the pulses in the data signals is different.

[0024] In a third aspect, an embodiment of the present application provides a display device, and the display device includes a display panel provided as in the first aspect.

[0025] In the display panel, brightness adjustment method, and display device according to the embodiments of the present application, the display panel includes a display area and a data driver arranged along a first direction; along the first direction, the display area includes at least two partitions, and the i-th partition is located on the side away from the data driver of the j-th partition. The driving capability of the data signal transmitted by the data driver to the i-th partition is greater than the driving capability of the data signal transmitted by the data driver to the j-th partition, where both i and j are positive integers. In this way, since the driving capability of the data signal received by the partition away from the data driver (i.e., the distal end) is greater than the driving capability of the data signal received by the partition close to the data driver (i.e., the proximal end), the load difference with a large load at the distal end and a small load at the proximal end can be compensated, thereby ensuring the brightness uniformity of different partitions in the display panel. In addition, since the driving capability of the data signal received by the proximal end is less than the driving capability of the data signal received by the distal end, it is equivalent to at least reducing the driving capability of the data signal received by the proximal end, thereby reducing the power consumption of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of a display panel;

[0028] Figure 2 It is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0029] Figure 3 It is a pulse schematic diagram of a data signal in a display panel provided by an embodiment of the present application;

[0030] Figure 4 It is a schematic circuit diagram of a data driver in a display panel provided by an embodiment of the present application;

[0031] Figure 5 It is another schematic circuit diagram of a data driver in a display panel provided by an embodiment of the present application;

[0032] Figure 6A schematic flowchart of a method for adjusting the brightness of a display panel provided by an embodiment of the present application;

[0033] Figure 7 A schematic flowchart of step S101 in the method for adjusting the brightness of a display panel provided by an embodiment of the present application;

[0034] Figure 8 A schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0035] Figure 9 A schematic structural diagram of a display device provided by an embodiment of the present application. Detailed implementation manners

[0036] The features and exemplary embodiments of various aspects of the present application will be described in detail below. For the purpose of making the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0037] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising", or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article, or device comprising the element.

[0038] It should be understood that the term "and / or" used herein is only a description of an association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0039] It should be noted that, in the embodiments of the present application, the transistor is described by taking an N-type transistor as an example, but it is not limited to the N-type transistor and can also be replaced by a P-type transistor. For an N-type transistor, the conduction level is a high level and the cut-off level is a low level. That is, when the gate of the N-type transistor is at a high level, it conducts between its first pole and second pole; when the gate of the N-type transistor is at a low level, it turns off between its first pole and second pole. For a P-type transistor, the conduction level is a low level and the cut-off level is a high level. That is, when the control pole of the P-type transistor is at a low level, it conducts between its first pole and second pole; when the control terminal of the P-type transistor is at a high level, it turns off between its first pole and second pole. In specific implementation, the gate of each of the above transistors serves as its control pole, and, according to the signal of the gate of each transistor and its type, its first pole can be used as the source pole and the second pole as the drain pole, or its first pole can be used as the drain pole and the second pole as the source pole, without distinction here. In addition, the conduction level and cut-off level in the embodiments of the present invention are both general terms. The conduction level refers to any level that can make the transistor conduct, and the cut-off level refers to any level that can make the transistor cut off / turn off.

[0040] In the embodiments of the present application, the term "electrically connected" may mean that two components are directly electrically connected, or may mean that two components are electrically connected via one or more other components.

[0041] Without departing from the spirit or scope of the present application, various modifications and variations can be made to the present application, which will be obvious to those skilled in the art. Therefore, the present application is intended to cover the modifications and variations of the present application that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the embodiments of the present application can be combined with each other without conflict.

[0042] Before elaborating on the technical solutions provided in the embodiments of the present application, for the convenience of understanding the embodiments of the present application, the present application first specifically describes the problems existing in the prior art:

[0043] As Figure 1 shown, the display panel 10' includes a display area AA' and a data driver 101'. The display area AA' includes a plurality of sub-pixels px and a plurality of data signal lines data', and each data signal line data' can be electrically connected to a column of sub-pixels px. The data driver 101' is electrically connected to the plurality of data signal lines data', and the data driver 101' provides data signals to the sub-pixels px through the data signal lines data' so that the sub-pixels px emit light.

[0044] It has been found by the inventors of the present application that at the proximal end A1' (close to the data driver 101') of the display area AA', since the load on the data signal line data' is small, the signal quality of the data signal is relatively good. When it is transmitted to the distal end A2' (far from the data driver 101') of the display area AA', due to the increase in the routing length of the data signal line data', the load on the data signal line data' increases, resulting in a deterioration of the signal quality of the data signal. If the data signal does not have a strong driving ability, the signal quality of the data signals at the proximal end A1' and the distal end A2' will vary greatly, leading to uneven display brightness in different regions of the display area. In order to ensure that the brightness of the distal end A2' can reach the expected brightness, blindly increasing the driving ability of the data signal output by the data driver 101' will cause a significant increase in the power consumption of the display panel.

[0045] In view of the above research findings of the inventors, embodiments of the present application provide a display panel, a brightness adjustment method thereof, and a display device, which can solve the technical problems of uneven brightness in different regions of the display panel and high power consumption of the display panel existing in the related art.

[0046] The technical concept of the embodiments of the present application is as follows: The data driver provides data signals with different driving abilities to different partitions, and the driving ability of the data signal transmitted by the data driver to the distal end is greater than the driving ability of the data signal transmitted by the data driver to the proximal end. In this way, since the driving ability of the data signal received by the partition far from the data driver (i.e., the distal end) is greater than the driving ability of the data signal received by the partition close to the data driver (i.e., the proximal end), the load difference between the large load at the distal end and the small load at the proximal end can be compensated, thereby ensuring uniform brightness in different partitions of the display panel. In addition, since the driving ability of the data signal received by the proximal end is less than the driving ability of the data signal received by the distal end, it is equivalent to at least reducing the driving ability of the data signal received by the proximal end, thereby reducing the power consumption of the display panel.

[0047] First, the display panel provided by the embodiments of the present application will be introduced below.

[0048] Figure 2 It is a schematic structural diagram of the display panel provided by the embodiments of the present application. As Figure 2As shown in the figure, the display panel 20 provided by the embodiment of the present application includes a display area AA arranged along the first direction Y and a data driver 201. The data driver 201 may be located in the non-display area, for example. Along the first direction Y, the display area AA includes at least two partitions f. For any two partitions f (the i-th partition f and the j-th partition f), where the i-th partition f is located on the side of the j-th partition away from the data driver, the driving ability of the data signal transmitted by the data driver 201 to the i-th partition f is greater than the driving ability of the data signal transmitted by the data driver 201 to the j-th partition, and both i and j are positive integers.

[0049] As Figure 3 shown, in some embodiments of the present application, different driving abilities of the data signal may refer to the same voltage value of the data signal, but different rise times t1 or fall times t2 of the pulses in the data signal. That is to say, different driving abilities of the data signal do not refer to different voltage values of the data signal, but different rise times t1 or fall times t2 of the pulses in the data signal.

[0050] In some specific embodiments, the display area AA may include multiple columns of sub-pixels px and multiple data signal lines data. One column of sub-pixels px may include multiple sub-pixels px, and each data signal line data may be electrically connected to one column of sub-pixels px. Each data signal line data may pass through multiple partitions f along the first direction Y, that is, one data signal line data may transmit data signals to the same column of sub-pixels px in multiple partitions f. The data driver 201 is electrically connected to the multiple data signal lines data, and the data driver 201 may provide data signals to the sub-pixels px in each partition f through the data signal lines data, so that the sub-pixels px emit light.

[0051] When providing a data signal to the i-th partition f, the data driver 201 may specifically provide the data signal to multiple columns of sub-pixels px in the i-th partition f through multiple data signal lines data. Similarly, when providing a data signal to the j-th partition f, the data driver 201 may specifically provide the data signal to multiple columns of sub-pixels px in the j-th partition f through multiple data signal lines data. For any one data signal line data, the driving ability of the data signal transmitted by the data driver 201 to the i-th partition f through this data signal line data is greater than the driving ability of the data signal transmitted by the data driver 201 to the j-th partition through this data signal line data, so as to make the brightness of different partitions f in the display area AA uniform.

[0052] In some specific embodiments, the display area AA includes multiple partitions f. Along the direction from the data driver 201 pointing to the display area AA, that is, from the proximal end to the distal end, the driving capabilities of the data signals transmitted by the data driver 201 to each partition f can increase in sequence, so as to compensate for the load difference that the load at the distal end is large and the load at the proximal end is small, and further ensure the brightness uniformity of different partitions f in the display panel. In addition, when ensuring that the brightness at the distal end reaches the target brightness, from the distal end to the proximal end, the driving capabilities of the data signals transmitted by the data driver 201 to each partition f decrease in sequence, thereby also being able to reduce the power consumption of the display panel.

[0053] For the display panel according to the embodiment of the present application, the display panel includes a display area and a data driver arranged along a first direction; along the first direction, the display area includes at least two partitions, the i-th partition is located on the side away from the data driver of the j-th partition, and the driving capability of the data signal transmitted by the data driver to the i-th partition is greater than the driving capability of the data signal transmitted by the data driver to the j-th partition, where both i and j are positive integers. In this way, since the driving capability of the data signal received by the partition away from the data driver (i.e., the distal end) is greater than the driving capability of the data signal received by the partition close to the data driver (i.e., the proximal end), the load difference that the load at the distal end is large and the load at the proximal end is small can be compensated, and further the brightness uniformity of different partitions in the display panel can be ensured. In addition, since the driving capability of the data signal received by the proximal end is less than the driving capability of the data signal received by the distal end, it is equivalent to at least reducing the driving capability of the data signal received by the proximal end, thereby reducing the power consumption of the display panel.

[0054] The following introduces the specific implementation manners for the data driver 201 to output data signals with different driving capabilities.

[0055] As Figure 4 shown, according to some embodiments of the present application, optionally, the data driver 201 may include a data signal input terminal Vin, an impedance adjustment circuit 40, and a data signal output terminal Vout. The impedance adjustment circuit 40 may include N cascaded impedance units 401 and multiple switches 402. The first-stage impedance unit 401 is electrically connected to the data signal input terminal Vin, and each stage of impedance unit 401 is electrically connected to the data signal output terminal Vout through a separate switch 402, where N is an integer greater than 1.

[0056] It is easy to understand that when the switch 402 corresponding to (electrically connected to) the first-stage impedance unit 401 is turned on and the switches 402 corresponding to the second-stage impedance unit 401 to the Nth-stage impedance unit 401 are turned off, the data signal input at the data signal input terminal Vin can reach the data signal output terminal Vout only through the first-stage impedance unit 401. At this time, the load carried by the data signal input at the data signal input terminal Vin is the smallest, so the driving ability of the data signal output by the data driver 201 is the largest.

[0057] When the switch 402 corresponding to (electrically connected to) the Nth-stage impedance unit 401 is turned on and the switches 402 corresponding to the first-stage impedance unit 401 to the (N - 1)th-stage impedance unit 401 are turned off, the data signal input at the data signal input terminal Vin needs to pass through the first-stage impedance unit 401 to the Nth-stage impedance unit 401 to reach the data signal output terminal Vout. At this time, the load carried by the data signal input at the data signal input terminal Vin is the largest, so the driving ability of the data signal output by the data driver 201 is the smallest.

[0058] When the switch 402 corresponding to any ith-stage impedance unit 401 is turned on, the switches 402 corresponding to other impedance units 401 are turned off. In this way, by switching different switches 402 to be turned on, data signals with different driving abilities can be output by the data driver 201.

[0059] In this way, by controlling the on / off of the switches corresponding to the impedance units at all levels in the impedance adjustment circuit, the load carried by the data signal input at the data signal input terminal is adjusted, the driving ability of the data signal output by the data driver is changed, and further, the data driver can output data signals with different driving abilities to meet the needs of brightness adjustment.

[0060] In some specific embodiments, optionally, the impedance values of the N cascaded impedance units 401 can be the same.

[0061] In this way, since the impedance values of the N cascaded impedance units are the same, only by adjusting the number of impedance units through which the data signal input at the data signal input terminal passes, the load carried by the data signal input at the data signal input terminal can be adjusted, thereby changing the driving ability of the data signal output by the data driver, and further enabling the data driver to output data signals with different driving abilities to meet the needs of brightness adjustment.

[0062] It should be noted that the impedance values of the N cascaded impedance units 401 can also be different. For example, the impedance values of the first-stage impedance unit 401 to the Nth-stage impedance unit 401 increase in sequence. The embodiments of the present application do not limit this.

[0063] Taking the example of providing a data signal to the i-th partition f and providing a data signal to the j-th partition f, the process of the data driver 201 outputting a data signal will be introduced below.

[0064] Continue to refer to Figure 4 , according to some embodiments of the present application, optionally, when the data driver provides a data signal to the i-th partition f, the switch corresponding to the p-th impedance unit 401 is turned on, and the switches corresponding to the other impedance units in the N cascaded impedance units 401 except the p-th impedance unit 401 are turned off. The data signal input from the data signal input terminal Vin passes through the first-stage impedance unit 401 to the p-th impedance unit 401 and reaches the data signal output terminal Vout. The data signal output terminal Vout provides a data signal to the i-th partition f through the data signal line data. When the data driver provides a data signal to the j-th partition f, the switch corresponding to the q-th impedance unit 401 is turned on, and the switches corresponding to the other impedance units in the N cascaded impedance units 401 except the q-th impedance unit 401 are turned off. The data signal input from the data signal input terminal Vin passes through the first-stage impedance unit 401 to the q-th impedance unit 401 and reaches the data signal output terminal Vout. The data signal output terminal Vout provides a data signal to the j-th partition f through the data signal line data. Wherein, p < q, and 1 ≤ p ≤ N, 1 ≤ q ≤ N. It should be noted that Figure 4 The positions of the p-th impedance unit 401 and the q-th impedance unit 401 in

[0065] are only illustrative and do not constitute a limitation on the embodiments of the present application.

[0066] As Figure 5As shown, in some specific embodiments, optionally, each impedance unit 401 may include a resistor R and a capacitor C. The capacitor C in each impedance unit 401 is grounded, and the resistors R in N cascaded impedance units 401 are connected in series. Specifically, the first end of the resistor R in the first-stage impedance unit 401 is electrically connected to the data signal input terminal Vin, and the second end of the resistor R in the first-stage impedance unit 401 is electrically connected to the first end of the resistor R in the second-stage impedance unit 401. For any k-th stage impedance unit 401 from the second-stage impedance unit 401 to the N-th stage impedance unit 401, the first end of the resistor R in the k-th stage impedance unit 401 is electrically connected to the second end of the resistor R in the k - 1-th stage impedance unit 401, and the second end of the resistor R in the k-th stage impedance unit 401 is electrically connected to the first end of the resistor R in the k + 1-th stage impedance unit 401. The first plate of the capacitor C in each impedance unit 401 is electrically connected to the data signal output terminal Vout, and the second plate of the capacitor C in each impedance unit 401 is grounded.

[0067] In this way, by increasing or decreasing the RC load, the driving ability of the data signal output by the data driver is changed, so that the data driver can output data signals with different driving abilities to meet the needs of brightness adjustment.

[0068] Continue to refer to Figure 5 , in some specific embodiments, optionally, the data driver 201 may further include a plurality of control signal terminals V3 1 ~V3 n . The switch 402 may include a switching transistor T. The gate of the switching transistor T is electrically connected to one of the control signal terminals V3 i , the first pole of the switching transistor T is electrically connected to the corresponding impedance unit 401, and the second pole of the switching transistor T is electrically connected to the data signal output terminal Vout. V3 i is any one of V3 1 ~V3 n . The switching transistor T turns off in response to the cut-off level output by the control signal terminal V3 i , and the switching transistor T turns on in response to the conduction level output by the control signal terminal V3 i .

[0069] In this way, by only adjusting the cut-off level / conduction level output by the control signal terminal, the data driver can output data signals with different driving abilities. Compared with other types of switches, the switching transistor has the advantages of small volume and easy control.

[0070] Based on the same technical concept as the display panel provided in the above embodiment, correspondingly, the present application also provides a method for adjusting the brightness of a display panel. As Figure 2As shown, the display panel 20 includes a display area AA arranged along the first direction Y and a data driver 201. The display area AA includes at least two partitions f arranged along the first direction Y, and the last partition f is located on the side of the first partition f away from the data driver 201. The data driver 201 includes M gears, and the driving capabilities of the data signals output at different gears are different, where M is a positive integer. For example, the driving capabilities of the data signals output from the first gear to the Mth gear gradually decrease. The specific structure of the display panel 20 has been described in detail in the above embodiments, and the two structures are the same, so details will not be repeated here.

[0071] As Figure 6 shown, the brightness adjustment method for the display panel provided in the embodiment of the present application includes the following steps S101 to S103.

[0072] S101. Determine a first gear corresponding to the first partition and a second gear corresponding to the last partition according to the target brightness of the display area determined in advance; wherein, both the first gear and the second gear are one of the M gears, and the driving capability of the data signal output at the second gear is greater than that of the data signal output at the first gear. For example, the first gear is the 7th gear among the M gears, and the second gear is the 2nd gear among the M gears. It should be noted that the 2nd gear and the 7th gear are only illustrative and do not constitute a limitation to the embodiment of the present application.

[0073] S102. Divide the area between the first partition and the last partition in the display area into multiple partitions according to the number of gears between the first gear and the second gear, and each partition corresponds to one gear.

[0074] S103. When providing a data signal to any ith partition, provide the data signal to the ith partition according to the gear corresponding to the ith partition, where i is a positive integer.

[0075] The brightness adjustment method of the display panel according to the embodiment of the present application first determines the first gear corresponding to the first partition and the second gear corresponding to the last partition according to the target brightness of the display area determined in advance; then divides the area between the first partition and the last partition in the display area into multiple partitions according to the number of gears between the first gear and the second gear, and each partition corresponds to one gear; finally, when providing a data signal to any i-th partition, the data signal is provided to the i-th partition according to the gear corresponding to the i-th partition. In this way, since the driving ability of the data signal received by the partition far from the data driver (i.e., the distal end) is greater than the driving ability of the data signal received by the partition close to the data driver (i.e., the proximal end), the load difference between the large load at the distal end and the small load at the proximal end can be compensated, thereby ensuring the brightness uniformity of different partitions in the display panel. In addition, since the driving ability of the data signal received by the proximal end is less than the driving ability of the data signal received by the distal end, it is equivalent to at least reducing the driving ability of the data signal received by the proximal end, thereby reducing the power consumption of the display panel.

[0076] The specific implementation manners of the above steps are introduced below.

[0077] First, introduce S101. According to the target brightness of the display area determined in advance, determine the first gear corresponding to the first partition and the second gear corresponding to the last partition.

[0078] As Figure 7 shown, according to some embodiments of the present application, optionally, S101 may specifically include the following steps S701 to S706.

[0079] S701. Provide a data signal to the first partition according to one of the M gears, and collect the first measured brightness of the first partition.

[0080] Specifically, a data signal can be provided to the first partition at any gear, and then the first measured brightness of the first partition is collected by an optical measurement device such as a color analyzer.

[0081] When the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold, directly determine the gear corresponding to the case where the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold as the first gear.

[0082] S702. When the difference between the first measured brightness and the target brightness is greater than the preset threshold, adjust the gear of the data signal provided to the first partition, and collect the first measured brightness of the first partition again until the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold.

[0083] Among them, the target brightness can be determined preset, or the brightness of any current partition can be used as the target brightness, and the embodiments of the present application do not limit this. Specifically, when the difference between the first measured brightness and the target brightness is greater than a preset threshold, the gear for providing the data signal to the first partition can be adjusted, for example, adjusted from the 8th gear to the 7th gear. Then, the data signal is provided to the first partition again at the adjusted gear, and the first measured brightness of the first partition is collected by an optical measurement device such as a color analyzer. Repeat this process until the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold.

[0084] S703. Determine the gear corresponding to when the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold as the first gear.

[0085] S704. Provide the data signal to the last partition according to one of the M gears, and collect the second measured brightness of the last partition.

[0086] Specifically, the data signal can be provided to the last partition at any gear, and then the second measured brightness of the last partition is collected by an optical measurement device such as a color analyzer.

[0087] When the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold, directly determine the gear corresponding to when the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold as the second gear.

[0088] S705. When the difference between the second measured brightness and the target brightness is greater than the preset threshold, adjust the gear for providing the data signal to the last partition, and collect the second measured brightness of the last partition again until the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold.

[0089] Specifically, when the difference between the second measured brightness and the target brightness is greater than the preset threshold, the gear for providing the data signal to the last partition can be adjusted, for example, adjusted from the 3rd gear to the 2nd gear. Then, the data signal is provided to the last partition again at the adjusted gear, and the second measured brightness of the last partition is collected by an optical measurement device such as a color analyzer. Repeat this process until the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold.

[0090] S706. Determine the gear corresponding to when the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold as the second gear.

[0091] In this way, by determining the first gear corresponding to the first partition and the second gear corresponding to the last partition through a unified target brightness, it can be ensured that when driving the first partition at the first gear and the last partition at the second gear, the brightness of the first partition is the same as that of the last partition.

[0092] It should be noted that the embodiments of the present application do not limit the execution order of the above steps S701 to S706. For example, S701 to S703 and S704 to S706 can be executed simultaneously. In addition, in some embodiments, the first gear corresponding to the first partition and the second gear corresponding to the last partition can also be determined by simulating through simulation software.

[0093] Next, introduce S102. According to the number of gears between the first gear and the second gear, divide the area between the first partition and the last partition in the display area into multiple partitions, and each partition corresponds to one gear.

[0094] According to some embodiments of the present application, optionally, S101 may specifically include the following steps:

[0095] When the number of gears between the first gear and the second gear is x, divide the area between the first partition and the last partition in the display area into y partitions, where x≥y, and both x and y are positive integers.

[0096] For example, if the first gear is the 7th gear among M gears and the second gear is the 2nd gear among M gears, then the number of gears between the first gear and the second gear is 4, which are the 3rd gear, the 4th gear, the 5th gear, and the 6th gear respectively. In some examples, any 1 gear can be selected from the 3rd gear, the 4th gear, the 5th gear, and the 6th gear, and the area between the first partition and the last partition in the display area is divided into 1 partition; or, any 2 gears can be selected from the 3rd gear, the 4th gear, the 5th gear, and the 6th gear, and the area between the first partition and the last partition in the display area is divided into 2 partitions; or, any 3 gears can be selected from the 3rd gear, the 4th gear, the 5th gear, and the 6th gear, and the area between the first partition and the last partition in the display area is divided into 3 partitions.

[0097] In this way, according to the number of gears between the first gear and the second gear, multiple partitions are divided, and each partition corresponds to one gear. Since the driving capabilities of the data signals output by different gears are different, differential compensation for different partitions can be realized, ensuring the uniformity of the brightness of different partitions in the display panel and reducing the power consumption of the display panel.

[0098] In some specific embodiments, x = y. That is, the number between the first partition and the last partition is equal to the number of gear positions between the first gear position and the second gear position, and different partitions correspond to different gear positions.

[0099] In this way, the number of partitions divided in the display area can be made as large as possible. The more the number of partitions, the more accurate the brightness compensation usually is, thereby improving the uniformity of the brightness of different partitions in the display panel.

[0100] Next, introduce S103. When providing a data signal to any i-th partition, the data signal is provided to the i-th partition according to the gear position corresponding to the i-th partition, where i is a positive integer.

[0101] Specifically, as shown in Figure 4 For example, each gear position corresponds to a switch 402, and different gear positions correspond to different switches 402. Let the gear position corresponding to the i-th partition be called the target gear position. When providing a data signal to any i-th partition, the switch 402 corresponding to the target gear position can be controlled to conduct, and other switches 402 are turned off, so as to provide a data signal with corresponding driving ability to the i-th partition.

[0102] It should be noted that the display panel 20 in the brightness adjustment method of the display panel in the method embodiment of the present application has the same structure as the display panel 20 in the above product embodiment, as shown in Figures 2 to 5 For the sake of brevity of description, it will not be elaborated here.

[0103] For example, as shown in Figure 3 In some embodiments, the driving abilities of the data signals output by different gear positions are different, including: the voltage values of the data signals output by different gear positions are the same, and the rise time or fall time of the pulses in the data signals is different. This will not be elaborated here.

[0104] Based on the brightness adjustment method of the display panel provided in the above embodiments, correspondingly, the present application also provides a specific implementation manner of an electronic device. Please refer to the following embodiments.

[0105] Figure 8 The schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application is shown.

[0106] The electronic device may include a processor 801 and a memory 802 storing computer program instructions.

[0107] Specifically, the above-mentioned processor 801 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more integrated circuits for implementing the embodiments of the present application.

[0108] The memory 802 may include a mass memory for data or instructions. By way of example and not limitation, the memory 802 may include a Hard Disk Drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. In one example, the memory 802 may include removable or non-removable (or fixed) media, or the memory 802 may be a non-volatile solid-state memory. The memory 802 may be internal or external to the integrated gateway disaster recovery device.

[0109] In one example, the memory 802 may be a Read Only Memory (ROM). In one example, the ROM may be a mask-programmed ROM, a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), an Electrically Alterable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0110] The memory 802 may include a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of the present application.

[0111] The processor 801 reads and executes the computer program instructions stored in the memory 802 to implement Figure 6 the methods / steps S101 to S103 in the illustrated embodiments, and achieves Figure 6 the corresponding technical effects achieved by the illustrated examples when executing their methods / steps. For the sake of brevity, the description is not repeated here.

[0112] In one example, the electronic device may further include a communication interface 803 and a bus 810. Among them, as Figure 8As shown, a processor 801, a memory 802, and a communication interface 803 are connected via a bus 810 to complete communication with each other.

[0113] The communication interface 803 is mainly used to implement communication between various modules, devices, units, and / or apparatuses in the embodiments of the present application.

[0114] The bus 810 includes hardware, software, or both, and couples the components of the electronic device to each other. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. In suitable cases, the bus 810 may include one or more buses. Although the embodiments of the present application describe and illustrate a specific bus, the present application contemplates any suitable bus or interconnect.

[0115] In addition, in combination with the display panel brightness adjustment method in the above embodiments, the embodiments of the present application may provide a computer-readable storage medium to implement. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, any one of the display panel brightness adjustment methods in the above embodiments is implemented. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as electronic circuits, semiconductor memory devices, ROMs, random access memories, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical discs, and hard disks.

[0116] Based on the display panel 20 provided in the above embodiments, correspondingly, the present application further provides a display device including the display panel provided by the present application. Please refer to Figure 9 , Figure 9 is a schematic structural diagram of a display device provided by an embodiment of the present application. Figure 9 The provided display device 1000 includes the display panel 20 provided by any one of the above embodiments of the present application. Figure 9Taking a mobile phone as an example, the display device 1000 will be described. It can be understood that the display device provided in the embodiments of the present application can be other display devices with a display function, such as wearable products, computers, televisions, in-vehicle display devices, etc. The present application does not make specific limitations thereto. The display device provided in the embodiments of the present application has the beneficial effects of the array substrate provided in the embodiments of the present application. For specific descriptions of the array substrate, reference can be made to the specific descriptions of the above embodiments. Details will not be repeated herein.

[0117] It should be clear that the present application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present application.

[0118] The functional blocks shown in the above structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave on a transmission medium or a communication link. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet or an intranet.

[0119] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0120] As described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems) and computer program products according to embodiments of the present application. It should be understood that each block in the flowchart and / or block diagram, and the combination of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, or other programmable data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the functions / actions specified in one or more blocks of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general purpose processor, a special purpose processor, a special application processor, or a field programmable logic circuit. It should also be understood that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0121] As described above, the above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. A method for adjusting the brightness of a display panel, characterized in that, the display panel includes a display area and a data driver arranged in a first direction, the display area includes at least two partitions arranged in the first direction, the last partition is located on one side of the first partition away from the data driver, the data driver includes M gears, and the driving capabilities of the data signals output by different gears are different, M is a positive integer, and the method includes: According to the target brightness of the display area determined in advance, determine the first gear corresponding to the first partition and the second gear corresponding to the last partition, both the first gear and the second gear are one of the M gears, and the driving capability of the data signal output by the second gear is greater than the driving capability of the data signal output by the first gear; According to the number of gears between the first gear and the second gear, divide the area between the first partition and the last partition in the display area into multiple partitions, and each partition corresponds to one gear; When providing a data signal to any i-th partition, provide the data signal to the i-th partition according to the gear corresponding to the i-th partition, where i is a positive integer; The step of determining the first gear corresponding to the first partition and the second gear corresponding to the last partition according to the target brightness of the display area determined in advance specifically includes: Provide a data signal to the first partition according to one of the M gears, and collect the first measured brightness of the first partition; When the difference between the first measured brightness and the target brightness is greater than a preset threshold, adjust the gear for providing the data signal to the first partition, and collect the first measured brightness of the first partition again until the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold; Determine the gear corresponding to when the difference between the first measured brightness and the target brightness is less than or equal to the preset threshold as the first gear; Provide a data signal to the last partition according to one of the M gears, and collect the second measured brightness of the last partition; When the difference between the second measured brightness and the target brightness is greater than a preset threshold, adjust the gear for providing the data signal to the last partition, and collect the second measured brightness of the last partition again until the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold; Determine the gear corresponding to when the difference between the second measured brightness and the target brightness is less than or equal to the preset threshold as the second gear.

2. The method according to claim 1, characterized in that, the step of dividing the area between the first partition and the last partition in the display area into multiple partitions according to the number of gears between the first gear and the second gear specifically includes: When the number of gears between the first gear and the second gear is x, the area between the first partition and the last partition in the display area is divided into y partitions, where x ≥ y, and both x and y are positive integers.

3. The method according to claim 1, wherein, the driving capabilities of the data signals output at different gears are different, including: the voltage values of the data signals output at different gears are the same, and the rise time or fall time of the pulses in the data signals is different.

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