CN110459168B

CN110459168B - Driving method, driving circuit, display screen assembly and electronic equipment

Info

Publication number: CN110459168B
Application number: CN201910772239.3A
Authority: CN
Inventors: 贾玉虎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2021-03-05
Anticipated expiration: 2039-08-21
Also published as: CN110459168A

Abstract

The embodiment of the application discloses a driving method, a driving circuit, a display screen assembly and electronic equipment, and relates to the technical field of electronics. Outputting a first control signal to the first driving circuit, wherein the first control signal is used for controlling the first driving circuit to drive the first display partition to display preset brightness; outputting a second control signal to the second driving circuit, wherein the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness; the first control signal has a first duty cycle and the second control signal has a second duty cycle, the first duty cycle being different from the second duty cycle. Through adjusting the first duty ratio of the first control signal, the first display partition can be controlled to display preset brightness, and the second display partition can also be controlled to display preset brightness through adjusting the second duty ratio of the second control signal, so that the display brightness of the first display partition and the display brightness of the second display partition of the display panel are the same, long-term ghost shadow is eliminated, and the display effect of the display panel is improved.

Description

Driving method, driving circuit, display screen assembly and electronic equipment

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a driving method, a driving circuit, a display panel assembly, and an electronic device.

Background

With the development of electronic technology, people have higher and higher requirements for using electronic devices, and display screens are used as an important part of interaction between users and electronic devices, so that the display screens become important for research of people in the field of electronic technology.

In the related art, the display panel may include a light emitting device and a driving circuit for driving the light emitting device, and the driving circuit drives the light emitting device to emit light, so as to illuminate the display panel.

Disclosure of Invention

The application provides a driving method, a driving circuit, a display screen assembly and electronic equipment, which can solve the technical problems that long-term ghost shadow occurs and the display effect is reduced due to inconsistent display brightness of different areas of a display screen in the related art.

In a first aspect, an embodiment of the present application provides a driving method, which is applied to a display panel assembly, where the display panel assembly includes a display panel and a driving circuit, the display panel includes a first display partition and a second display partition, the driving circuit includes a first driving circuit and a second driving circuit, and the method includes:

outputting a first control signal to the first driving circuit, wherein the first control signal is used for controlling the first driving circuit to drive the first display partition to display preset brightness;

outputting a second control signal to the second driving circuit, wherein the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness;

wherein the first control signal has a first duty cycle and the second control signal has a second duty cycle, the first duty cycle being different from the second duty cycle.

In a second aspect, an embodiment of the present application provides a driving circuit applied to a display panel assembly, where the display panel assembly includes a display panel, the display panel includes a first display partition and a second display partition, and the driving circuit includes:

the driving circuit comprises a duty ratio control circuit, a first driving circuit and a second driving circuit;

the duty ratio control circuit is used for outputting a first control signal to the first driving circuit, and the first control signal is used for controlling the first driving circuit to drive the first display partition to display preset brightness; and/or

The duty ratio control circuit is used for outputting a second control signal to the second driving circuit, and the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness;

In a third aspect, an embodiment of the present application provides a display screen assembly, including:

a display panel including a first display section and a second display section; and a driving circuit as described above.

In a fourth aspect, the present application provides an electronic device, including the display screen assembly as described above.

The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:

in the embodiment of the application, a first control signal is output to a first driving circuit, and the first control signal is used for controlling the first driving circuit to drive a first display partition to display preset brightness; outputting a second control signal to the second driving circuit, wherein the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness; wherein the first control signal has a first duty cycle and the second control signal has a second duty cycle, the first duty cycle being different from the second duty cycle. Through adjusting the first duty ratio of the first control signal, the first display partition can be controlled to display preset brightness, and the second display partition can also be controlled to display preset brightness through adjusting the second duty ratio of the second control signal, so that the display brightness of the first display partition and the display brightness of the second display partition of the display panel are the same, long-term ghost shadow is eliminated, and the display effect of the display panel is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 2 is a schematic flowchart of a driving method according to an embodiment of the present disclosure;

FIG. 3 is a diagram showing an exemplary arrangement of pixels at the display panel A of FIG. 1;

fig. 4 is an exemplary timing diagram of a first control signal in a driving method according to an embodiment of the present disclosure;

FIG. 5 is a graph of the luminance of the first control signal of FIG. 4;

fig. 6 is another exemplary timing diagram of a first control signal in a driving method according to an embodiment of the present disclosure;

FIG. 7 is a graph of luminance versus timing for the first control signal of FIG. 6;

fig. 8 is a schematic diagram illustrating a timing comparison of a first control signal and a second control signal in a driving method according to an embodiment of the present disclosure;

fig. 9 is another schematic flow chart of a driving method according to an embodiment of the present disclosure;

fig. 10 is a diagram showing a luminance adjustment instruction generation in a driving method;

fig. 11 is another schematic flow chart of a driving method according to an embodiment of the present disclosure;

fig. 12 is another schematic flow chart of a driving method according to an embodiment of the present disclosure;

fig. 13 is another schematic flow chart of a driving method according to an embodiment of the present disclosure;

fig. 14 shows an exemplary luminance decay time curve of a display panel assembly in one driving method in an embodiment of the present application;

fig. 15 is another schematic flow chart of a driving method according to an embodiment of the present disclosure;

fig. 16 is another schematic flow chart of a driving method according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure;

fig. 18 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure;

fig. 19 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure;

fig. 20 is a schematic structural diagram of a display screen assembly according to an embodiment of the present application.

Detailed Description

In the related art, a flexible or foldable screen can be used as a display panel of an electronic device, improving the practicality and operability of the electronic device. In the embodiment of the present invention, the display panel may be manufactured by using an Organic Light-Emitting Diode (OLED), and specifically, the display panel may be manufactured by using an Active Matrix Organic Light-Emitting Diode (AMOLED). For convenience of description, in the embodiments of the present application, an OLED display assembly obtained by fabricating a display panel with an OLED is taken as an example, and specific implementation processes of the embodiments are described.

With conventional driving methods, in an OLED display panel assembly, the luminance of the light emitting material of the display panel may decay with increasing age. For example, when the display panel has a first display partition and a second display partition, when the two display partitions are used for different periods of time, the display panel may have a problem that the display luminance of the first display partition and the display luminance of the second display partition are different. Furthermore, when the display panel is displayed in a full scale, the first display subarea and the second display subarea have obvious brightness boundary at the boundary position, which is called long-term afterimage. Such long-term image sticking affects the display effect, and a driving method is required to solve the above problem.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, and fig. 2 is a schematic flow chart of a driving method according to an embodiment of the present disclosure. The driving method provided in the embodiment of the present application is applied to a display panel assembly, the display panel assembly includes a display panel 120, as shown in fig. 1, the display panel 120 may be a bendable or foldable panel, and the display panel 120 may include a plurality of display partitions, for example, the display panel 120 includes a first display partition, a folding axis display partition, and a third display partition, and for convenience of description, a specific embodiment of the driving method is described herein by taking two display partitions of the display panel 120, that is, a first display partition 122 and a second display partition 124 of the display panel 120 as an example.

The display screen assembly further comprises a driving circuit, the driving circuit comprises a first driving circuit and a second driving circuit, the first display partition is driven by the first driving circuit, and the specific first driving circuit can control the pixels in the first display partition to be turned on or turned off so as to drive the first display partition to be turned on; the second display subarea is driven by a second driving circuit, and the specific second driving circuit can control pixels in the second display subarea to be turned on or turned off so as to drive the second display subarea to be turned on.

As shown in fig. 2, the method includes:

s202, outputting a first control signal to the first driving circuit, wherein the first control signal is used for controlling the first driving circuit to drive the first display partition to display the preset brightness.

Alternatively, the first control signal may be output to the first driving circuit by a duty control circuit.

The display panel in the OLED display screen assembly is composed of a plurality of organic light emitting diodes, colored light is emitted by driving the single organic light emitting diode, and an image is displayed through the combination of the plurality of organic light emitting diodes. Therefore, it can be considered that one organic light emitting diode in the display panel represents one pixel, and the plurality of organic light emitting diodes are included in the first display sub-area in the display panel, so that the first display sub-area also includes a plurality of pixels. Fig. 3 is a diagram showing an exemplary arrangement of pixels at the display panel a of fig. 1, wherein the pixels of adjacent rows in a are staggered, and more pixels can be arranged in the display panel in the same area.

Alternatively, if the organic light emitting diodes in the first display sub-area emit light, a forward voltage is applied to the organic light emitting diodes, that is, a current is required to flow into the organic light emitting diodes from their anodes and a current is required to flow out from their cathodes. After the first control signal is output to the first driving circuit, the first driving circuit controls the current flowing into the organic light emitting diode in the first display subarea to be turned on or turned off according to the first control signal, namely the first driving circuit controls the pixels in the first display subarea to emit light or to be turned off according to the first control signal. It is to be understood that the pixels in the first display partition include one or more pixels, and thus the first control signal may refer to a light emission control signal for controlling one pixel in the first display partition, or the first control signal may also refer to a light emission control signal for controlling all or a part of the pixels in the first display partition.

For example, if the first display partition adopts a display mode in which pixels are sequentially displayed row by row, the first control signal may be a control signal for controlling pixels in each row in the first display partition to emit light or to be extinguished. If the first display sub-area adopts a display mode in which the single pixels sequentially display, the first control signal may be a control signal for controlling the light emission or light extinction of each pixel in the first display sub-area. For convenience of description, the first control signal here refers to a control signal for controlling light emission or light extinction of each row of pixels in the first display partition, and outputs the first control signal to the first driving circuit, the first driving circuit may control light emission or light extinction of each row of pixels in the first display partition according to the first control signal, and the first driving circuit may also control the first display partition to display different brightness or display preset brightness of a specified brightness value according to the first control signal.

And S204, outputting a second control signal to the second driving circuit, wherein the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness.

Optionally, the duty cycle control circuit may output a second control signal to the second driving circuit, the duty cycle control circuit outputting the second control signal may be the same as the duty cycle control circuit outputting the first control signal, and the duty cycle control circuit outputting the second control signal may also be a separate duty cycle control circuit from the duty cycle control circuit outputting the first control signal.

Optionally, the second display partition and the first display partition have the same or similar structure, and the pixels in the second display partition include one or more pixels. The second control signal may refer to a light emitting control signal for controlling one pixel in the second display partition, or the second control signal may also refer to a light emitting control signal for controlling all pixels or a part of pixels in the second display partition. For convenience of description, the second control signal here refers to a control signal for controlling the pixels in each row in the second display sub-area to emit light or extinguish. And outputting a second control signal to a second driving circuit, wherein the second driving circuit can control the pixels in each row in the second display partition to emit light or extinguish according to the second control signal, and the second driving circuit can also control the second display partition to display different brightness or preset brightness of a specified brightness value according to the second control signal.

It is understood that the driving method in the embodiment of the present application may be applied to a display panel assembly, where the display brightness of a display panel in the display panel assembly is related to the flowing current or the voltage across the organic light emitting diode in the display panel. Because the flowing current or the voltage at two ends of the organic light emitting diode in the display panel is adjusted, the power of the organic light emitting diode can be changed, and the brightness of the organic light emitting diode can be further changed.

The display brightness of the display panel in the display module is also related to the ratio of the on-time to the off-time of the organic light emitting diodes in the display panel, because when the display panel adopts progressive scanning display (progressive pixel sequential display), the organic light emitting diodes in the display panel are alternately turned on and off, and after the organic light emitting diodes are alternately turned on and off to reach a certain frequency, human eyes cannot distinguish the alternating process of turning on and off the organic light emitting diodes in the display panel, and the human eyes can consider that the display panel is in a state of being continuously turned on all the time.

Alternatively, since the first driving circuit controls the organic light emitting diodes in the first display sub-area to be turned on or off according to the first control signal, the low level and the high level of the first control signal output to the first driving circuit determine the turning on and off of the organic light emitting diodes in the first display sub-area. The turn-on and turn-off durations of the organic light emitting diodes in the first display sub-area are determined by durations of low and high levels of the first control signal output to the first driving circuit. For example, if a certain time of the first control signal output to the first driving circuit is at a low level, the first driving circuit controls the light emitting diodes of the first display sub-area to be turned on according to the first control signal, and at this time, the pixels of the first display sub-area are in a light emitting state, wherein the duration of the light emitting state of the pixels of the first display sub-area is related to the duration of the low level of the first control signal output to the first driving circuit. If the certain time of the first control signal is high level, the first driving circuit controls the light emitting diodes of the first display subarea to be closed according to the first control signal, and at the moment, the pixels of the first display subarea are in an off state, wherein the duration time of the off state of the pixels of the first display subarea is related to the duration time of the high level of the first control signal output to the first driving circuit.

Referring to fig. 4 and fig. 5, fig. 4 is an exemplary timing diagram of a first control signal in a driving method according to an embodiment of the present application, and fig. 5 is a timing diagram of an emission luminance corresponding to the timing of the first control signal in fig. 4.

The duration of the low level or the ratio of the duration of the high level of the signal to the preset time within the preset time may be referred to as a duty ratio of the signal. Then, the duration of the low level of the first control signal or the ratio of the duration of the high level to the preset time within the preset time may be referred to as a first duty ratio of the first control signal, wherein the frequency of the alternation of the low level and the high level of the first control signal may not be limited. For convenience of description, the first driving circuit controls the light emitting diodes of the first display partition to be turned on according to the first control signal when the first control signal is at a low level, and a ratio of a duration time of the low level of the first control signal to a preset time is referred to as a first duty ratio of the first control signal. As can be seen from fig. 4, the ratio of the duration of the low level of the first control signal to the predetermined time is 50%, that is, the first duty ratio of the first control signal is 50%, as can be seen from fig. 5, when the first duty ratio of the first control signal is about 50%, the average light emitting luminance of the pixels in the first display sub-area is about 150 nits.

Referring to fig. 6 and 7, fig. 6 is another exemplary timing diagram of a first control signal in a driving method according to an embodiment of the present application, and fig. 7 is a timing diagram of an emission luminance corresponding to the first control signal in fig. 6.

As can be seen from fig. 6, the ratio of the duration of the low level of the first control signal to the predetermined time is 100%, that is, the first duty ratio of the first control signal is 100%, as can be seen from fig. 7, when the first duty ratio of the first control signal is 100%, the average light emitting luminance of the pixels in the first display sub-area is about 350 nits. Therefore, when the first control signal is output to the first driving circuit, the first duty ratio of the first control signal can be increased through the duty ratio control circuit so as to enhance the light-emitting brightness of the pixels in the first display partition; or reducing the first duty ratio of the first control signal through a duty ratio control circuit so as to weaken the light emitting brightness of the pixels in the first display subarea.

It is understood that the second duty ratio of the second control signal has the same or similar properties as the first duty ratio of the first control signal, and for convenience of description, the second driving circuit controls the light emitting diodes of the second display partition to be turned on according to the second control signal when the second control signal is at a low level, and a ratio of a duration time of the low level of the second control signal to a preset time is referred to as the second duty ratio of the second control signal. The second duty ratio of the second control signal can be increased through the duty ratio control circuit so as to enhance the light emitting brightness of the pixels in the second display subarea; or reducing the second duty ratio of the second control signal through a duty ratio control circuit so as to weaken the light emitting brightness of the pixels in the second display subarea.

When the service time of the first display subarea is different from that of the second display subarea, the display panel has the problem that the display brightness of the first display subarea is different from that of the second display subarea, at the moment, the first duty ratio of the first control signal can be controlled by the duty ratio control circuit to be different from the second duty ratio of the second control signal, the luminous brightness of pixels in the first display subarea is adjusted by controlling the first duty ratio of the first control signal, and the display brightness of the first display subarea is adjusted to be the preset brightness; the luminance of the pixels in the second display partition can be adjusted by controlling the second duty ratio of the second control signal, and then the display luminance of the second display partition is adjusted to be the preset luminance, wherein the preset luminance can be set according to the practical application condition, and here, it is only for explaining that the display luminances of the first display partition and the second display partition are the same, so that the specific value of the preset luminance is not limited in the embodiment of the application.

In the embodiment of the application, a first control signal is output to the first driving circuit, and the first control signal is used for controlling the first driving circuit to drive the first display partition to display the preset brightness; outputting a second control signal to the second driving circuit, wherein the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness; wherein the first control signal has a first duty cycle and the second control signal has a second duty cycle, the first duty cycle being different from the second duty cycle. Through adjusting the first duty ratio of the first control signal, the first display partition can be controlled to display preset brightness, and the second display partition can also be controlled to display preset brightness through adjusting the second duty ratio of the second control signal, so that the display brightness of the first display partition and the display brightness of the second display partition of the display panel are the same, long-term ghost shadow is eliminated, and the display effect of the display panel is improved.

Referring to fig. 8, fig. 8 is a schematic diagram illustrating a timing comparison of a first control signal and a second control signal in a driving method according to an embodiment of the present disclosure.

It can be understood that, in the above embodiments, the first display partition may be a common display partition, and the second display partition may be an unusual display partition, where the common display partition may be a display area frequently used by a user, the unusual display partition may be a display area not frequently used by the user, and the unusual display partition may be a supplementary display area of the common display partition.

In fig. 8, a timing chart of the first control signal is shown above, and a timing chart of the second control signal is shown below, where a first duty ratio of the first control signal is greater than a second duty ratio of the second control signal to compensate for the brightness of the first display partition, so that the display brightness of the first display partition is the same as the display brightness of the second display partition.

It is to be understood that outputting the first control signal to the first driving circuit in the embodiment of the present application includes:

the first duty ratio of the first control signal is increased, and the first control signal is output to the first drive circuit. The duty ratio control circuit increases the first duty ratio of the first control signal, so that the light emitting brightness of the pixels in the first display partition can be increased, and the display brightness of the first display partition is further enhanced. The first driving circuit can be controlled to drive the first display partition to display the preset brightness by reasonably adjusting the first duty ratio in the first control signal.

And/or outputting a second control signal to a second drive circuit, comprising:

and reducing the second duty ratio of the second control signal and outputting the second control signal to the second driving circuit. The duty ratio control circuit is used for reducing the second duty ratio of the second control signal, so that the light-emitting brightness of the pixels in the second display subarea can be reduced, and the display brightness of the second display subarea is weakened. By reasonably adjusting the second duty ratio in the second control signal, the second driving circuit can be controlled to drive the second display partition to display preset brightness, so that the display brightness of the second display partition is the same as that of the first display partition.

It is understood that in the embodiment of the present application, "and/or" describes an association relationship of an associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone.

Referring to fig. 9, fig. 9 is another schematic flow chart of a driving method according to an embodiment of the present disclosure.

It is to be understood that a driving method in the above embodiments further includes:

s205, receiving a first brightness adjusting instruction for the first display partition, and adjusting the first duty ratio according to the first brightness adjusting instruction.

And S206, receiving a second brightness adjusting instruction aiming at the second display partition, and adjusting a second duty ratio according to the second brightness adjusting instruction. Or

And S207, receiving a third brightness adjusting instruction aiming at the first display partition and the second display partition, and adjusting the first duty ratio and the second duty ratio according to the third brightness adjusting instruction.

Optionally, the duty ratio control circuit may include a display driving chip and a duty ratio generation circuit, the display driving chip may receive the brightness adjustment instruction, process the brightness adjustment instruction, and generate a corresponding clock signal, the driving chip sends the clock signal to the duty ratio generation circuit, and the duty ratio generation circuit generates the first control signal and/or the second control signal according to the clock signal.

Alternatively, the brightness adjustment instruction may be generated based on an operation of a user touching the display panel, may be generated based on an operation of a user pressing a physical key, or may be generated based on a voice input by the user, and the form of the brightness adjustment instruction generation is not limited herein. For example, the brightness adjustment instruction may be a brightness adjustment instruction generated by a user by touching a relevant setting displayed in the display panel when the brightness of the first display partition and the second display partition is observed to be uneven or needs to be adjusted.

Fig. 10 is a diagram illustrating a brightness adjustment instruction generation in a driving method, in which a user generates a first brightness adjustment instruction by sliding a button displayed in a display panel to adjust the brightness of a first display section. Similarly, the second brightness adjustment instruction may be generated by sliding a button displayed in the display panel to adjust the brightness of the second display partition, and the third brightness adjustment instruction may be generated by sliding a button displayed in the display panel to adjust the brightness of the first display partition and the second display partition simultaneously.

And S208, outputting a first control signal to the first driving circuit, wherein the first control signal is used for controlling the first driving circuit to drive the first display partition to display the preset brightness.

And S209, outputting a second control signal to the second driving circuit, wherein the second control signal is used for controlling the second driving circuit to drive the second display partition to display the preset brightness.

Optionally, after adjusting the first duty ratio according to the first brightness adjustment instruction, the duty ratio control circuit outputs a first control signal to the first driving circuit, so as to adjust the brightness of the first display partition, so that the first display partition displays the preset brightness; the duty ratio control circuit can also adjust a second duty ratio according to a second brightness adjusting instruction, and output a second control signal to the second driving circuit so as to adjust the brightness of the second display partition, so that the second display partition also displays the preset brightness; the duty ratio control circuit can also adjust the first duty ratio and the second duty ratio according to a third brightness adjusting instruction, output a first control signal to the first driving circuit and output a second control signal to the second driving circuit, and further can simultaneously adjust the brightness of the first display partition and the second display partition to be preset brightness. Through the operation, the display brightness of the first display subarea is the same as that of the second display subarea, so that long-term afterimages are eliminated, and the display effect of the display panel is improved.

Referring to fig. 11, fig. 11 is another schematic flow chart of a driving method according to an embodiment of the present disclosure.

It is understood that, in the embodiment of the present application, outputting the first control signal to the first driving circuit includes:

s210, detecting first brightness of the first display partition, and obtaining first adjustment brightness of the first display partition according to the first brightness and preset brightness.

Optionally, the duty ratio control circuit is connected to a brightness detection module, and the brightness detection module is configured to detect a first brightness of the first display partition and/or a second brightness of the second display partition. For example, the brightness detection module sends the first brightness to the duty control circuit by sending a display signal to a predetermined area in the first display partition at a predetermined time point and then detecting the first brightness of the first display partition using the screen brightness sensor.

Optionally, the first brightness may be in nits, and the duty ratio control circuit may obtain the first adjusted brightness of the first display partition according to the first brightness and the preset brightness after obtaining the first brightness of the first display partition, for example, the duty ratio control circuit performs a difference between the first brightness and the preset brightness to obtain a difference value, and the difference value is used as a brightness required for adjusting the brightness of the first display partition to the preset brightness, that is, the first adjusted brightness.

And S211, adjusting the first duty ratio according to the first adjustment brightness.

Optionally, the display brightness of the display partition and the duty ratio of the control signal may have a preset calculation formula, so that after the first adjusted brightness is obtained, the duty ratio to be adjusted corresponding to the first adjusted brightness may be calculated according to the preset calculation formula, and the first duty ratio is adjusted.

S212, outputting the first control signal to the first driving circuit.

Optionally, the duty ratio control circuit outputs a first control signal to the first driving circuit, and the brightness of the first display partition is controlled by adjusting a first duty ratio in the first control signal, so that the first display partition displays the preset brightness. For example, if the first brightness of the first display partition is detected and obtained to be 100 nits and the preset brightness is 150 nits, the duty ratio control circuit needs to increase the first brightness by 50 nits, that is, the first adjustment brightness is 50 nits, and the duty ratio control circuit can increase the first duty ratio of the first control signal to the preset duty ratio value according to the first adjustment brightness to increase the light emission brightness of the pixels in the first display partition, so as to enhance the display brightness of the first display partition, and enable the first display partition to display the preset brightness.

Referring to fig. 12, fig. 12 is another schematic flow chart of a driving method according to an embodiment of the present disclosure.

It can be understood that, in the embodiment of the present application, outputting the second control signal to the second driving circuit includes:

s214, detecting second brightness of the second display partition, and obtaining second adjustment brightness of the second display partition according to the second brightness and the preset brightness.

Optionally, the duty ratio control circuit is connected to a brightness detection module, and the brightness detection module is configured to detect a first brightness of the first display partition and/or a second brightness of the second display partition. For example, the brightness detection module sends the second brightness to the duty control circuit by sending a display signal to a predetermined region in the second display partition at a predetermined time point and then detecting the second brightness of the second display partition using the screen brightness sensor.

Optionally, the second brightness may be in nits, and the duty ratio control circuit may obtain the second adjusted brightness of the second display partition according to the second brightness and the preset brightness after obtaining the second brightness of the second display partition, for example, the duty ratio control circuit performs a difference between the second brightness and the preset brightness to obtain a difference value, and the difference value is used as the brightness required for adjusting the brightness of the second display partition to the preset brightness, that is, the second adjusted brightness.

And S215, adjusting the second duty ratio according to the second adjusted brightness.

Optionally, the display brightness of the display partition and the duty ratio of the control signal may have a preset calculation formula, so that after the second adjusted brightness is obtained, the duty ratio to be adjusted corresponding to the second adjusted brightness may be calculated according to the preset calculation formula, and the second duty ratio is adjusted.

And S216, outputting a second control signal to the second driving circuit.

Optionally, the duty ratio control circuit outputs a second control signal to the second driving circuit, and the brightness of the second display partition is controlled by adjusting a second duty ratio in the second control signal, so that the second display partition also displays the preset brightness. For example, if the detected and obtained second luminance of the second display sub-area is 200 nits and the preset luminance is 150 nits, the duty ratio control circuit needs to reduce the second luminance by 50 nits, that is, the second adjusted luminance is 50 nits, and the duty ratio control circuit can reduce the second duty ratio of the second control signal to the preset duty ratio value according to the second adjusted luminance, so as to reduce the luminance of the pixels in the second display sub-area, and further weaken the display luminance of the second display sub-area, so that the second display sub-area displays the preset luminance.

Referring to fig. 13, fig. 13 is another schematic flow chart of a driving method according to an embodiment of the present disclosure.

It can be understood that, in the embodiment of the present application, outputting the first control signal to the first driving circuit includes:

s218, acquiring first accumulated display time of the first display partition, and adjusting the first duty ratio according to the first accumulated display time.

Optionally, the duty ratio control circuit is connected to the time accumulation module, and the time accumulation module collects first accumulated display time of the first display partition and/or second accumulated display time of the second display partition. For example, the time accumulation module collects first accumulated display time of the first display partition at a predetermined time point, and sends the collected first accumulated display time to the duty ratio control circuit.

Optionally, the first accumulated display time may be an accumulated sum of all use times of the first display partition in all power-on states, the duty ratio control circuit obtains a brightness value that needs to be adjusted corresponding to the first brightness in the first accumulated use time after obtaining the first accumulated display time of the first display partition, and the duty ratio control circuit adjusts the first duty ratio of the first control signal according to the brightness value that needs to be adjusted. For example, the first duty ratio may be adjusted according to a brightness decay time curve of the display screen assembly, specifically, the duty ratio control circuit obtains the brightness decay time curve of the display screen assembly obtained through pre-training or experiment, obtains the first accumulated display time of the first display partition, obtains the first decay brightness corresponding to the first accumulated use time according to the brightness decay time curve of the display screen assembly, obtains the brightness to be adjusted when the first display partition displays the preset brightness, that is, the first adjustment brightness according to the first decay brightness and the preset brightness, and finally calculates the duty ratio to be adjusted corresponding to the second adjustment brightness according to the first adjustment brightness and a preset calculation formula, so as to adjust the first duty ratio.

And S220, outputting a first control signal to the first driving circuit.

Optionally, after adjusting the first duty ratio of the first control signal according to the first accumulated display time, the first control signal is output to the first driving circuit to adjust the display brightness of the pixels in the first display partition, and then the display brightness of the first display partition is adjusted, so that the first display partition displays the preset brightness.

Fig. 14 shows an exemplary luminance decay time curve of a display panel assembly in one driving method in an embodiment of the present application. For example, in fig. 14, when the first accumulation time of the first display sub-area is 500 hours, in a brightness decay time curve of the display screen assembly, the first decay brightness corresponding to the first accumulation time is 100 nits, if the preset brightness is 150 nits, the first brightness needs to be increased by 50 nits, the first duty ratio of the first control signal can be increased to the preset duty ratio value through the duty ratio control circuit, so as to increase the light emission brightness of the pixels in the first display sub-area, and further enhance the display brightness of the first display sub-area, so that the first display sub-area displays the preset brightness.

Referring to fig. 15, fig. 15 is another schematic flow chart of a driving method according to an embodiment of the present disclosure.

It is understood that, in the embodiment of the present application, outputting the second control signal to the second driving circuit includes:

s222, obtaining second accumulated display time of the second display partition, and adjusting a second duty ratio according to the second accumulated display time.

Optionally, the duty ratio control circuit is connected to the time accumulation module, and the time accumulation module collects first accumulated display time of the first display partition and/or second accumulated display time of the second display partition. For example, the time accumulation module collects second accumulated display time of the second display partition at a predetermined time point, and sends the collected second accumulated display time to the duty ratio control circuit.

Optionally, the second accumulated display time may be an accumulated sum of all use times of the second display partition in all power-on states, the duty ratio control circuit obtains a brightness value to be adjusted corresponding to the second brightness in the second accumulated use time after obtaining the second accumulated display time of the second display partition, and adjusts the second duty ratio of the second control signal according to the brightness value to be adjusted. For example, the second duty ratio is adjusted according to a brightness decay time curve of the display screen assembly, specifically, the duty ratio control circuit obtains the brightness decay time curve of the display screen assembly obtained through pre-training or experiment, obtains the second accumulated display time of the second display partition, obtains the second decay brightness corresponding to the second accumulated use time according to the brightness decay time curve of the display screen assembly, obtains the brightness to be adjusted when the preset brightness is displayed in the second display partition, that is, the second adjustment brightness according to the second decay brightness and the preset brightness, and finally calculates the duty ratio to be adjusted corresponding to the second adjustment brightness according to the second adjustment brightness and a preset calculation formula, so as to adjust the second duty ratio.

S224, outputting the second control signal to the first driving circuit.

For example, in fig. 14, when the second accumulated time of the second display sub-area is 200 hours, the brightness decay corresponding to the second accumulated time in the brightness decay time curve of the display screen assembly is 300 nits, and if the preset brightness is 150 nits, the second brightness needs to be reduced by 150 nits, and the duty control circuit may reduce the second duty of the second control signal to the preset duty value to reduce the light emitting brightness of the pixels in the second display sub-area, so as to weaken the display brightness of the second display sub-area, so that the second display sub-area displays the preset brightness.

It can be understood that the duty ratio control circuit can acquire the first accumulated display time of the first display partition and the second accumulated display time of the second display partition through the time accumulation module, and according to the brightness decay time of the display screen assembly, obtain the brightness value of the first display partition which needs to be adjusted and the brightness value of the second display partition which needs to be adjusted, and then specifically adjust the first duty ratio of the first control signal and adjust the second duty ratio of the second control signal, so that the display brightness of the first display partition and the display brightness of the second display partition are automatically adjusted to be the same display brightness, so that long-term afterimages are eliminated, and the display effect of the display panel is improved.

Referring to fig. 16, fig. 16 is another schematic flow chart of a driving method according to an embodiment of the present disclosure.

It can be understood that the display brightness of the display panel is related to the flowing current or the voltage across the organic light emitting diode in the display panel, because the power of the organic light emitting diode can be changed by adjusting the flowing current or the voltage across the organic light emitting diode in the display panel, and the brightness of the organic light emitting diode can be changed.

Therefore, the driving method provided by the embodiment of the application can further include:

s226, outputting the first power signal to the first driving circuit.

Optionally, the first driving circuit controls the power of the organic light emitting diode in the first display sub-area according to the first power signal to control the luminance of the pixels in the first display sub-area, and further control the luminance of the first display sub-area, so that the first display sub-area displays the preset luminance.

And S228, outputting a second power signal to the second driving circuit.

Optionally, the second driving circuit controls the power of the organic light emitting diode in the second display sub-area according to the second power signal to control the luminance of the pixels in the second display sub-area, and further control the luminance of the second display sub-area, so that the second display sub-area displays the preset luminance.

When the service time of the first display subarea is different from that of the second display subarea, the display panel has the problem that the display brightness of the first display subarea is different from that of the second display subarea, at the moment, the signal intensity of the first power signal can be controlled to be different from that of the second power signal, the light-emitting brightness of pixels in the first display subarea is adjusted by controlling the signal intensity of the first power signal, and then the display brightness of the first display subarea is adjusted, so that the first display subarea displays the preset brightness; the signal intensity of the second power signal can be controlled to adjust the brightness of the pixels in the second display partition, and then the display brightness of the second display partition is adjusted, so that the second display partition displays preset brightness, the display brightness of the first display partition is the same as that of the second display partition, and the display effect of the display panel is improved.

It can be understood that the brightness attenuation value of the first display partition and/or the second display partition may also be directly obtained, and the first duty ratio and/or the second duty ratio may be adjusted according to the brightness attenuation value. Therefore, the outputting the first control signal to the first driving circuit in the embodiment of the present application may further include:

and acquiring a first brightness attenuation value of the first display partition, and adjusting the first duty ratio according to the first brightness attenuation value.

Optionally, the duty ratio control circuit is connected to the brightness attenuation detection module, and the brightness attenuation detection module detects a first brightness attenuation value of the first display partition and sends the first brightness attenuation value to the duty ratio control circuit. After the duty ratio control circuit acquires the first brightness attenuation value of the first display partition, the brightness value of the first brightness of the first display partition, which needs to be adjusted, under the first brightness attenuation value is determined, and the duty ratio control circuit adjusts the first duty ratio according to the brightness value which needs to be adjusted.

The first control signal is output to the first drive circuit. Optionally, after the first duty ratio is adjusted according to the first brightness attenuation value, a first control signal is output to the first driving circuit to adjust the display brightness of the pixels in the first display partition, and then the display brightness of the first display partition is adjusted, so that the first display partition displays the preset brightness.

Similarly, outputting the second control signal to the second drive circuit may further include:

and acquiring a second brightness attenuation value of the second display partition, and adjusting a second duty ratio according to the second brightness attenuation value.

Optionally, the duty ratio control circuit is connected to the brightness attenuation detection module, and the brightness attenuation detection module detects a second brightness attenuation value of the second display partition and sends the second brightness attenuation value to the duty ratio control circuit. And after the duty ratio control circuit acquires the second brightness attenuation value of the second display subarea, the brightness value of the second brightness of the second display subarea needing to be adjusted under the second brightness attenuation value is determined, and the duty ratio control circuit adjusts the second duty ratio according to the brightness value needing to be adjusted.

And outputting a second control signal to the second driving circuit. Optionally, after the second duty ratio is adjusted according to the second brightness attenuation value, a second control signal is output to the second driving circuit to adjust the display brightness of the pixels in the second display partition, and then the display brightness of the second display partition is adjusted, so that the second display partition displays the preset brightness.

It can be understood that the duty ratio control circuit can acquire the first brightness attenuation value of the first display partition and the second brightness attenuation value of the second display partition through the brightness attenuation detection module to obtain the brightness value of the first display partition which needs to be adjusted and the brightness value of the second display partition which needs to be adjusted, and then specifically adjust the first duty ratio of the first control signal and adjust the second duty ratio of the second control signal to realize that the display brightness of the first display partition and the display brightness of the second display partition are automatically adjusted to be the same display brightness, so as to eliminate long-term afterimage and improve the display effect of the display panel.

Referring to fig. 17, fig. 17 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure.

Alternatively, a driving circuit applied to a display panel assembly, the display panel assembly including a display panel including a first display partition 122 and a second display partition 124, the driving circuit 200 includes: a first drive circuit 220, a second drive circuit 240, and a duty cycle control circuit 260.

Optionally, the first driving circuit 220 is configured to drive the first display partition 122, the second driving circuit 240 is configured to drive the second display partition 124, the duty ratio control circuit 260 is connected to the first driving circuit 220, the duty ratio control circuit 260 is further connected to the second driving circuit 240, and the duty ratio control circuit 260 outputs a first control signal to the first driving circuit 220 or outputs a second control signal to the second driving circuit 240. The duty ratio control circuit 260 is configured to output a first control signal to the first driving circuit 220, where the first control signal is used to control the first driving circuit 220 to drive the first display partition 122 to display a preset brightness; and/or the duty ratio control circuit 260 is configured to output a second control signal to the second driving circuit 240, where the second control signal is configured to control the second driving circuit 240 to drive the second display partition 124 to display the preset brightness.

The duty cycle control circuit outputting the second control signal may be the same as the duty cycle control circuit outputting the first control signal, the duty cycle control circuit outputting the second control signal may also be a separate duty cycle control circuit from the duty cycle control circuit outputting the first control signal, and the duty cycle control circuit 260 may be a circuit structure including a circuit chip and/or an electronic component, and in this embodiment, the specific circuit structure of the duty cycle control circuit 260 is not limited.

Alternatively, if it is required for the organic light emitting diodes in the first display sub-area 122 to emit light, a forward voltage is applied to the organic light emitting diodes, that is, a current is required to flow into the organic light emitting diodes from the anodes thereof, and a current flows out from the cathodes thereof, the first driving circuit 220 controls the current flowing into the organic light emitting diodes in the first display sub-area 122 to be turned on or off according to the first control signal, that is, controls the pixels in the first display sub-area 122 to emit light or to be turned off.

Alternatively, if the first display sub-area 122 adopts a display mode in which pixels are sequentially displayed row by row, the first control signal may be a control signal for controlling pixels in each row of the first display sub-area 122 to emit light or to be extinguished, and the first driving circuit 220 may be disposed on one side of the first display sub-area 122, or the first driving circuit 220 may be disposed on two sides of the first display sub-area 122 in order to improve the display stability of the first display sub-area 122. The first driving circuit 220 may be a circuit structure including a circuit chip and/or an electronic component, and in the embodiment of the present application, the specific circuit structure of the first driving circuit 220 is not limited.

Optionally, the second driving circuit 240 and the first driving circuit 220 are similar in structure, the second driving circuit 240 controls a control signal for turning on or off each row of pixels in the second display sub-area 124 according to a second control signal, and the second control signal can control the light emission or light extinction of each row of pixels in the second display sub-area 124. The second driving circuit 240 may be disposed at one side of the second display partition 124, or the second driving circuit 240 may be disposed at both sides of the second display partition 124 in order to improve display stability of the second display partition 124. The second driving circuit 240 may be a circuit structure including a circuit chip and/or an electronic component, and in the embodiment of the present application, the specific circuit structure of the second driving circuit 240 is not limited.

Alternatively, when the first display section 122 and the second display section 124 are used for different time periods, the display panel 120 may have a problem that the display brightness of the first display section 122 and the display brightness of the second display section 124 are different. At this time, the duty ratio control circuit 260 may output the first control signal to the first driving circuit 220 or output the second control signal to the second driving circuit 240, and adjust a first duty ratio of the first control signal to be different from a second duty ratio of the second control signal. The first driving circuit 220 adjusts the luminance of the pixels in the first display sub-area 122 according to the first duty ratio of the first control signal, so as to adjust the display luminance of the first display sub-area 122 and control the first display sub-area 122 to display the preset luminance; the second driving circuit 240 may also adjust the luminance of the pixels in the second display sub-area 124 according to the second duty ratio of the second control signal, so as to adjust the display luminance of the second display sub-area 124, and control the second display sub-area 124 to display the preset luminance, so that the display luminances of the first display sub-area 122 and the second display sub-area 124 are the same, so as to eliminate the long-term ghost and improve the display effect of the display panel.

Optionally, the duty ratio control circuit 260 is further configured to receive a brightness adjustment instruction for the first display partition 122 and/or the second display partition 124, and adjust the first duty ratio and/or the second duty ratio according to the brightness adjustment instruction.

Optionally, the duty ratio control circuit 260 may include a display driving chip and a duty ratio generation circuit, the display driving chip may receive the brightness adjustment instruction and process the brightness adjustment instruction to generate a corresponding clock signal, the driving chip sends the clock signal to the duty ratio generation circuit, and the duty ratio generation circuit generates the first control signal and/or the second control signal according to the clock signal.

Alternatively, the brightness adjustment instruction may be generated based on an operation of a user touching the display panel, may be generated based on an operation of a user pressing a physical key, or may be generated based on a voice input by the user, and the form of the brightness adjustment instruction generation is not limited herein. For example, the brightness adjustment instruction may be a brightness adjustment instruction generated by a user by touching an associated setting displayed in the display panel when the user observes that the brightness of the first display sub-section 122 and the second display sub-section 124 is not uniform or needs to adjust the display brightness of the first display sub-section 122 and the second display sub-section 124.

Alternatively, the duty ratio control circuit 260 adjusts the first duty ratio according to the first brightness adjustment instruction, and may adjust the brightness of the first display partition 122, so that the first display partition displays the preset brightness. The duty ratio control circuit 260 may further adjust a second duty ratio according to a second brightness adjustment instruction, and may adjust the brightness of the second display partition 124, so that the second display partition 124 also displays the preset brightness. The duty ratio control circuit 260 may further adjust the first duty ratio and the second duty ratio according to the third brightness adjustment instruction, and may also adjust the brightness of the first display partition 122 and the brightness of the second display partition 124 at the same time, so that the display brightness of the first display partition 122 is the same as the display brightness of the second display partition 124, so as to eliminate the ghost and improve the display effect of the display panel.

Referring to fig. 18, fig. 18 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure.

It is understood that the driving circuit 200 in the above embodiment may further include:

the brightness detection module 280 is configured to detect a first brightness of the first display sub-area 122 and a second brightness of the second display sub-area 124.

Alternatively, the brightness detection module 280 may be a brightness detection circuit, the brightness detection circuit may include a screen brightness sensor and a peripheral circuit, and the brightness detection sensor may detect the first brightness of the first display partition 122 and the second brightness of the second display partition 124.

Optionally, the duty ratio control circuit 260 is connected to a brightness detection module 280, and the brightness detection module 280 is used for detecting the first brightness of the first display partition 122 and/or the second brightness of the second display partition 124. For example, the brightness detection module 280 sends the first brightness to the duty control circuit 260 by sending the display signal to a predetermined region in the first display sub-section 122 at a predetermined time point and then detecting the first brightness of the first display sub-section 122 using the screen brightness sensor.

The duty cycle control circuit 260 is further configured to adjust the first duty cycle and/or the second duty cycle according to the first brightness and the second brightness.

Optionally, the first brightness may be in nits, and after the duty ratio control circuit 260 obtains the first brightness of the first display sub-area 122, the first adjusted brightness of the first display sub-area 122 may be obtained according to the first brightness and the preset brightness, for example, the duty ratio control circuit 260 performs a difference between the first brightness and the preset brightness to obtain a difference value, and the difference value is used as a brightness required for adjusting the brightness of the first display sub-area 122 to the preset brightness, that is, the first adjusted brightness. Because the display brightness of the display partition and the duty ratio of the control signal can have a preset calculation formula, after the first adjustment brightness is obtained, the duty ratio which is required to be adjusted and corresponds to the first adjustment brightness can be calculated according to the preset calculation formula, and then the first duty ratio is adjusted. The duty ratio control circuit 260 outputs a first control signal to the first driving circuit 220, and controls the brightness of the first display sub-area 122 by adjusting the first duty ratio in the first control signal, so that the first display sub-area 122 displays a preset brightness.

Optionally, the second brightness may be in nits, and after the duty ratio control circuit 260 obtains the second brightness of the second display partition 124, the second adjusted brightness of the second display partition 124 may be obtained according to the second brightness and the preset brightness, for example, the duty ratio control circuit 260 performs a difference between the second brightness and the preset brightness to obtain a difference value, and the difference value is used as a brightness required for adjusting the brightness of the second display partition 124 to the preset brightness, that is, the second adjusted brightness. Because the display brightness of the display partition and the duty ratio of the control signal can have a preset calculation formula, after the second adjustment brightness is obtained, the duty ratio which is required to be adjusted and corresponds to the second adjustment brightness can be calculated according to the preset calculation formula, and then the second duty ratio is adjusted. The duty ratio control circuit 260 outputs a second control signal to the second driving circuit 240, and adjusts a second duty ratio in the second control signal to further control the brightness of the second display partition 124, so that the second display partition 124 also displays the preset brightness.

Referring to fig. 19, fig. 19 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure.

the time accumulating module 2100 is configured to obtain a first accumulated display time of the first display partition 122 and a second accumulated display time of the second display partition 124.

Optionally, the duty ratio control circuit 260 is connected to the time accumulation module 2100, and the time accumulation module 2100 collects the first accumulated display time of the first display partition 122 and/or the second accumulated display time of the second display partition 124. For example, the time accumulation module 2100 collects the first accumulated display time of the first display partition 122 at a predetermined time point and transmits the collected first accumulated display time to the duty control circuit 260.

The duty ratio control circuit 260 is further configured to adjust the first duty ratio and/or the second duty ratio according to the first accumulated display time and the second accumulated display time.

Alternatively, the time accumulation module 2100 may be a time accumulation circuit, and the time accumulation circuit may be a circuit structure including a circuit chip and/or an electronic component, and in this embodiment, the specific circuit structure of the time accumulation circuit is not limited.

Optionally, the first accumulated display time may refer to an accumulated sum of all use times of the first display partition 122 in all power-on states, after the time accumulation module 2100 obtains the first accumulated display time of the first display partition 122, the first accumulated display time is sent to the duty ratio control circuit 260, the duty ratio control circuit 260 obtains a brightness value of the first accumulated use time, which needs to be adjusted, and the duty ratio control circuit 260 adjusts the first duty ratio of the first control signal according to the brightness value which needs to be adjusted.

Optionally, after adjusting the first duty ratio of the first control signal according to the first accumulated display time, the duty ratio control circuit 260 outputs the first control signal to the first driving circuit 220 to adjust the display brightness of the pixels in the first display partition 122, so as to adjust the display brightness of the first display partition 122, so that the first display partition 122 displays the preset brightness.

Optionally, the second accumulated display time may refer to an accumulated sum of all the use times of the second display partition 124 in all the power-on states, after the time accumulation module 2100 acquires the second accumulated display time of the second display partition 124, the second accumulated display time is sent to the duty ratio control circuit 260, the duty ratio control circuit 260 obtains a brightness value of the second accumulated use time, which needs to be adjusted, and the duty ratio control circuit 260 adjusts the second duty ratio of the second control signal according to the brightness value which needs to be adjusted.

The duty ratio control circuit 260 outputs the first control signal to the second driving circuit 240 after adjusting the second duty ratio of the second control signal according to the second accumulated display time, so as to adjust the display brightness of the pixels in the second display partition 124, and further adjust the display brightness of the second display partition 124, so that the second display partition 124 also displays the preset brightness.

Optionally, the driving circuit 200 in the above embodiment may further include:

and the brightness attenuation detection module is used for acquiring a first brightness attenuation value of the first display subarea and a second brightness attenuation value of the second display subarea.

Optionally, the duty control circuit 260 is connected to the brightness attenuation detection module, and the brightness attenuation detection module detects a first brightness attenuation value of the first display partition and sends the first brightness attenuation value to the duty control circuit 260. After the duty ratio control circuit 260 obtains the first brightness attenuation value of the first display partition, the brightness value of the first brightness of the first display partition, which needs to be adjusted, under the first brightness attenuation value is determined, and the duty ratio control circuit 260 adjusts the first duty ratio according to the brightness value which needs to be adjusted.

Optionally, after adjusting the first duty ratio according to the first brightness attenuation value, the duty ratio control circuit 260 outputs a first control signal to the first driving circuit to adjust the display brightness of the pixels in the first display partition, so as to adjust the display brightness of the first display partition.

Optionally, the brightness attenuation detecting module may further detect a second brightness attenuation value of the second display partition and send the second brightness attenuation value to the duty ratio control circuit 260. After the duty ratio control circuit 260 obtains the second brightness attenuation value of the second display sub-area, the brightness value of the second brightness of the second display sub-area, which needs to be adjusted, under the second brightness attenuation value is determined, and the duty ratio control circuit adjusts the second duty ratio according to the brightness value which needs to be adjusted.

Optionally, after adjusting the second duty ratio according to the second brightness attenuation value, the duty ratio control circuit 260 outputs a second control signal to the second driving circuit to adjust the display brightness of the pixels in the second display partition, so as to adjust the display brightness of the second display partition.

It can be understood that the duty ratio control circuit 260 may acquire the first brightness attenuation value of the first display partition and the second brightness attenuation value of the second display partition through the brightness attenuation detection module to obtain the brightness value of the first display partition that needs to be adjusted and the brightness value of the second display partition that needs to be adjusted, and then specifically adjust the first duty ratio of the first control signal and adjust the second duty ratio of the second control signal to realize automatically adjusting the display brightness of the first display partition and the display brightness of the second display partition to the same display brightness, so as to eliminate long-term afterimage and improve the display effect of the display panel.

In an embodiment of the present application, a driving circuit includes: a first driving circuit for driving the first display section; a second driving circuit for driving the second display section; a duty ratio control circuit that outputs a first control signal to the first drive circuit or a second control signal to the second drive circuit; wherein a first duty cycle of the first control signal is different from a second duty cycle of the second control signal. Because the first display subarea is driven by the first driving circuit, the second display subarea is driven by the second driving circuit, the display brightness of the first display subarea can be adjusted by adjusting the first duty ratio of the first control signal, and the display brightness of the second display subarea can be adjusted by adjusting the second duty ratio of the second control signal, so that the display brightness of the first display subarea and the display brightness of the second display subarea can be independently adjusted, the first display subarea and the second display subarea can be adjusted to be the same display brightness as required, long-term ghost can be eliminated, and the display effect of the display screen can be improved.

Referring to fig. 20, fig. 20 is a schematic structural diagram of a display screen assembly according to an embodiment of the present application.

The display screen assembly 100 includes:

a display panel 120, the display panel 120 including a first display section 122 and a second display section 124. And a driving circuit 200 as described above.

Embodiments also provide an electronic device including the display screen assembly 100 as described above, which may be a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and an electronic device such as a digital TV, a desktop computer, and the like.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In view of the above description of the driving method, the driving circuit, the display panel assembly and the electronic device provided in the present application, those skilled in the art will recognize that there are variations in the embodiments and applications of the driving method, the driving circuit, the display panel assembly and the electronic device provided in the present application.

Claims

1. A driving method is applied to a display screen assembly, the display screen assembly comprises a display panel and a driving circuit, the display panel comprises a first display partition and a second display partition, the driving circuit comprises a first driving circuit and a second driving circuit, and the method comprises the following steps:

the outputting a first control signal to the first drive circuit includes:

acquiring first accumulated display time of the first display partition, and acquiring first attenuation brightness corresponding to the first accumulated display time according to a brightness attenuation time curve of a display screen assembly; obtaining a first adjusted brightness of the first display partition according to the first attenuated brightness and the preset brightness; adjusting a first duty ratio according to the first adjusted brightness; outputting the first control signal to the first drive circuit;

the outputting a second control signal to the second driving circuit includes:

acquiring second accumulated display time of the second display partition, and acquiring second attenuation brightness corresponding to the second accumulated display time according to a brightness attenuation time curve of a display screen assembly; obtaining a second adjusted brightness of the second display partition according to the second attenuated brightness and the preset brightness; adjusting a second duty cycle according to the second adjusted brightness; outputting a second control signal to the second driving circuit;

the brightness decay time curve is a brightness decay time curve of the display screen assembly obtained through pre-training or experiments;

wherein the first control signal has the first duty cycle, the second control signal has the second duty cycle, the first duty cycle is different from the second duty cycle, and the display brightness of the first display partition is the same as the display brightness of the second display partition.

2. The method of claim 1, wherein the first display partition is a frequently used display partition and the second display partition is a frequently used display partition;

then said outputting a first control signal to said first drive circuit comprises:

increasing the first duty ratio of the first control signal and outputting the first control signal to the first driving circuit; and/or

The outputting a second control signal to the second driving circuit includes:

and reducing the second duty ratio of the second control signal, and outputting the second control signal to the second driving circuit.

3. The method of claim 1, further comprising:

receiving a first brightness adjusting instruction aiming at the first display partition, and adjusting the first duty ratio according to the first brightness adjusting instruction;

receiving a second brightness adjusting instruction aiming at the second display partition, and adjusting the second duty ratio according to the second brightness adjusting instruction; or

Receiving a third brightness adjustment instruction aiming at the first display partition and the second display partition, and adjusting the first duty ratio and the second duty ratio according to the third brightness adjustment instruction.

4. The method of claim 1, wherein outputting a first control signal to the first driver circuit comprises:

detecting first brightness of the first display partition, and obtaining first adjustment brightness of the first display partition according to the first brightness and the preset brightness;

adjusting the first duty cycle according to the first adjusted brightness;

outputting the first control signal to the first driving circuit.

5. The method of claim 1, wherein outputting a second control signal to the second driver circuit comprises:

detecting second brightness of the second display subarea, and obtaining second adjustment brightness of the second display subarea according to the second brightness and the preset brightness;

adjusting the second duty cycle according to the second adjusted brightness;

outputting the second control signal to the second driving circuit.

6. A kind of drive circuit, apply to the assembly of the display screen, characterized by, the assembly of the display screen includes the display panel, the said display panel includes the first display subarea and second display subarea, the said drive circuit includes:

the duty ratio control circuit is used for outputting a first control signal to the first driving circuit, and the first control signal is used for controlling the first driving circuit to drive the first display partition to display preset brightness;

the outputting a first control signal to the first drive circuit includes:

the duty ratio control circuit is further configured to output a second control signal to the second driving circuit, where the second control signal is used to control the second driving circuit to drive the second display partition to display the preset brightness;

the outputting a second control signal to the second driving circuit includes:

the brightness decay time curve is a brightness decay time curve of the display screen assembly obtained by the duty ratio control circuit through pre-training or experiments;

7. The drive circuit according to claim 6,

the duty ratio control circuit is further used for receiving a first brightness adjusting instruction aiming at the first display partition, and adjusting the first duty ratio according to the first brightness adjusting instruction;

the duty ratio control circuit is further used for receiving a second brightness adjusting instruction aiming at the second display partition, and adjusting the second duty ratio according to the second brightness adjusting instruction; or

The duty ratio control circuit is further configured to receive a third brightness adjustment instruction for the first display partition and the second display partition, and adjust the first duty ratio and the second duty ratio according to the third brightness adjustment instruction.

8. The driving circuit according to claim 6, further comprising:

the brightness detection module is used for detecting first brightness of the first display subarea or second brightness of the second display subarea;

the duty ratio control circuit is further configured to obtain a first adjusted brightness of the first display partition according to the first brightness and the preset brightness, and adjust the first duty ratio according to the first adjusted brightness;

the duty ratio control circuit is further configured to obtain a second adjusted brightness of the second display partition according to the second brightness and the preset brightness, and adjust the second duty ratio according to the second adjusted brightness.

9. The driving circuit according to claim 6, further comprising:

the time accumulation module is used for acquiring first accumulation display time of the first display partition or second accumulation display time of the second display partition;

the duty ratio control circuit is further configured to adjust the first duty ratio according to the first accumulated display time, or adjust the second duty ratio according to the second accumulated display time.

10. A display screen assembly, the display screen assembly comprising:

a display panel including a first display section and a second display section; and

a drive circuit as claimed in any one of claims 6 to 9.

11. An electronic device comprising the display screen assembly of claim 10.