CN110875007B

CN110875007B - Display panel driving method, display driving device and display panel

Info

Publication number: CN110875007B
Application number: CN201911205608.7A
Authority: CN
Inventors: 吴常志; 孙莹; 许育民
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2022-09-20
Anticipated expiration: 2039-11-29
Also published as: CN110875007A

Abstract

The embodiment of the invention discloses a display panel driving method, a display driving device and a display panel. The driving method includes: acquiring an image to be displayed; providing display signals to the sub-pixels by using the scanning lines and the data lines according to an image to be displayed; displaying an image to be displayed according to the display signal; the display signal comprises a scanning signal and a data signal, the scanning signal comprises a plurality of scanning time sequence sections which are connected in series in sequence, and each scanning time sequence section correspondingly triggers one row of sub-pixels; the scanning time sequence section comprises at least two scanning sub time sequence sections, and the time length of one scanning sub time sequence section is different from the time length of the other scanning sub time sequence section in the scanning time sequence section comprising the scanning sub time sequence sections. According to the technical scheme, the scanning sub-time sequence segments are different in duration, the periodicity of scanning signals can be damaged, electromagnetic interference is reduced, and the influence on other vehicle-mounted electronic products when the display panel is applied to a vehicle-mounted display screen is reduced.

Description

Display panel driving method, display driving device and display panel

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel driving method, a display driving apparatus, and a display panel.

Background

With the development of Display technology, Liquid Crystal Display (LCD) panels and Organic Light Emitting Diode (OLED) Display panels gradually become two major Display panels in the Display field, and LCD panels and OLED Display panels are widely used in devices or scenes with integrated Display functions, which can be known by those skilled in the art, such as computers, mobile phones, wearable devices, and vehicles.

Generally, the operation of electronic products causes Interference to other electronic products in the periphery, which can be referred to as Electromagnetic Interference (EMI), and the electronic products subjected to the EMI have reduced performance or even fail to operate normally. Based on this, when the display panel is integrally arranged in some devices or applied to some scenes, for example, when the display panel is applied to a vehicle-mounted display, as a vehicle-mounted display screen, the display panel may generate electromagnetic interference to other vehicle-mounted electronic products.

Disclosure of Invention

The invention provides a display panel driving method, a display driving device and a display panel, which are used for reducing electromagnetic interference radiated to the periphery by the display panel, so that the electromagnetic interference to other vehicle-mounted electronic products when the display panel is used as a vehicle-mounted display screen is reduced.

In a first aspect, an embodiment of the present invention provides a driving method for a display panel, where the display panel includes scan lines and data lines, where the scan lines and the data lines intersect to define sub-pixel regions, and the sub-pixel regions are provided with sub-pixels; the driving method includes:

acquiring an image to be displayed;

according to the image to be displayed, providing display signals to the sub-pixels by using the scanning lines and the data lines;

displaying the image to be displayed according to the display signal;

the display signal comprises a scanning signal and a data signal, the scanning signal comprises a plurality of scanning time sequence sections which are sequentially connected in a cascade mode, and each scanning time sequence section correspondingly triggers one row of the sub-pixels; the scanning time sequence section comprises at least two scanning sub time sequence sections, and the duration of one scanning sub time sequence section is different from the duration of the other scanning sub time sequence section in the scanning time sequence sections comprising the scanning sub time sequence sections.

In a second aspect, an embodiment of the present invention provides a display driving apparatus for performing any one of the driving methods provided in the first aspect, the display driving apparatus including:

the image acquisition module is used for acquiring an image to be displayed;

the signal providing module is used for providing display signals for the sub-pixels by utilizing the scanning lines and the data lines according to the image to be displayed;

and the image display module is used for displaying the image to be displayed according to the display signal.

In a third aspect, an embodiment of the present invention further provides a display panel, where the display panel is driven by applying any one of the driving methods provided in the first aspect.

The driving method of the display panel provided by the embodiment of the invention can make the time of at least two scanning sub-time sequence sections in a frame of picture to be displayed unequal and not equal to the time of one scanning time sequence section by setting that one scanning time sequence section comprises at least two scanning sub-time sequence sections, and the time of one scanning sub-time sequence section is unequal to the time of the other scanning sub-time sequence section in the scanning time sequence section comprising the scanning sub-time sequence sections, so that the inherent periodicity of a scanning signal in the frame of picture to be displayed can be disturbed, that is, the inherent frequency characteristic of the scanning signal is damaged, the electromagnetic interference caused by the fixed frequency of the scanning signal can be weakened, that is, the electromagnetic interference generated by the scanning signal is improved, the problem that the interference energy radiates out to cause interference on other electronic products on the vehicle is avoided, and the improvement of the performance of other electronic products on the vehicle is facilitated, i.e. to facilitate its normal operation.

Drawings

FIG. 1 is a timing diagram illustrating a driving method of a display panel according to the related art;

FIG. 2 is a schematic diagram illustrating an EMI effect corresponding to a driving timing of the display panel of FIG. 1;

fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 4 is a schematic flowchart of a driving method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a driving timing sequence according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of another driving timing sequence provided in the embodiment of the present invention;

FIG. 7 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

FIG. 8 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;

fig. 10 is a schematic flow chart of another driving method according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

FIG. 12 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

FIG. 13 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

FIG. 14 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

fig. 15 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 16 is a schematic diagram of a structure of the multiplexing unit of FIG. 15;

fig. 17 is a schematic flow chart of another driving method according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of another driving timing sequence provided by the embodiment of the present invention;

fig. 19 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 20 is a schematic diagram of another driving sequence according to an embodiment of the present invention;

FIG. 21 is a schematic diagram of another driving sequence provided in the embodiment of the present invention;

fig. 22 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 23 is a schematic flow chart of another driving method according to an embodiment of the present invention;

FIG. 24 is a schematic diagram of another driving timing sequence provided in accordance with an embodiment of the present invention;

fig. 25 is a schematic structural diagram of a display driving apparatus according to an embodiment of the present invention;

fig. 26 is a schematic view of an application scenario of a display panel according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the structure of the existing display panel, the display panel includes a display area and a non-display area; in the display area, scanning lines and data lines are arranged in a crossed manner to limit a sub-pixel area, and sub-pixels are arranged in the sub-pixel area; in the non-display region, a driver circuit including a scan driver circuit which is also commonly referred to as a shift register circuit and a data driver circuit which is commonly referred to as a multiplexer circuit is provided. The shift register circuit comprises cascade shift registers, the output end of each stage of shift register is electrically connected with a scanning line corresponding to a row of sub-pixels, and the scanning line provides scanning signals (also called gate opening signals) for the same row of scanning lines; the multi-path selection circuit comprises a plurality of multi-path selection units, the control ends of the multi-path selection units correspond to the output ends one by one, the output ends are correspondingly connected with the data lines, and the data lines are used for writing data signals into the sub-pixels under the action of the clock control signal lines. The principle of the display panel generating electromagnetic interference is exemplarily described below with reference to fig. 1 and 2.

Referring to fig. 1 and 2, in the prior art, scanning signals (also called Gate signals, shown as Gate1 ', Gate 2', Gate3 ', … … and Gate' in fig. 1, where n may take on values of 4, 5 and 6 and other positive integers) are scanned in a progressive manner, one stage at a time; during the scan signal enable period (high period in fig. 1) of the current stage, the clock control signal (shown as MUX0 in fig. 1) controls each data line to write the data signal to the sub-pixel of the current row. Wherein, the scanning time of each line can be called as a line scanning period T _H-sync The scanning frequency corresponding to the line scanning period is f _H-sync ，f _H-sync ＝1/T _H-sync (ii) a Taking the multiplexing unit 1:3 as an example (as shown in fig. 1), the MUX0 includes three clock control sequences, which are respectively shown as SW01, SW02 and SW03 in fig. 1, so that the overall frequency of the clock control signal MUX0 (which may also be referred to as "MUX frequency" herein) is 3 times the scan frequency, and thus the write frequency of the data signal is 3 times the scan frequency for a row of sub-pixels. Because the scanning frequency, the frequency of the clock control signal and the writing frequency of the data signal are all fixed, the energy peak value appears at the fixed frequency position of the low frequency band of the vehicle gaugeNamely, energy peaks occur periodically, and a large energy value at the energy peaks radiates outwards, which is likely to cause other electronic products on the vehicle to be interfered by electromagnetic waves and not work normally. The EMI test effect is shown in fig. 2, wherein the abscissa X represents frequency in hertz (Hz), and the ordinate Y represents DB value, i.e., the intensity of radiation energy in absolute units (a.u), i.e., the EMI test result is obtained by a pure counting method; wherein, L011 and L012 respectively represent the average value and the maximum value of the same vehicle specification required limit value, and L021 and L022 respectively represent the magnitude of the EMI radiation energy at different frequencies obtained by the test. As can be seen from fig. 2, energy peaks occur at positions at which the scanning frequency is multiplied. Thus, the energy at the energy peak is radiated to the periphery of the display panel, which may affect the normal operation of other electronic products in the vehicle.

In view of the above problems, an embodiment of the present invention provides a driving method of a display panel, a display driving apparatus, and a display panel, in which a display signal includes a scan signal and a data signal, the scan signal includes a plurality of scan time segments connected in series, and each scan time segment triggers a row of sub-pixels correspondingly; the scanning time sequence section comprises at least two scanning sub time sequence sections, and the time length of one scanning sub time sequence section is unequal to the time length of the other scanning sub time sequence section in the scanning time sequence section comprising the scanning sub time sequence sections; therefore, by segmenting the scanning time sequence section, the inherent periodicity of the scanning signals in one frame of picture to be displayed is destroyed, namely the inherent frequency of the scanning signals is destroyed, the electromagnetic interference phenomenon caused by the fixed frequency of the scanning signals can be weakened, namely the electromagnetic interference generated by the scanning signals is improved, the problem that the interference energy radiates to the periphery to cause interference to other electronic products on the vehicle is avoided, the improvement of the performance of other electronic products on the vehicle is facilitated, and the normal operation of vehicle-mounted electronic products is facilitated.

A driving method of a display panel, a display driving apparatus, and a display panel according to an embodiment of the present invention are exemplarily described below with reference to fig. 3 to fig. 26.

Illustratively, referring to fig. 3, the display panel 90 includes a display area 920 and a non-display area 910 surrounding the display area 920; the display panel 90 includes scan lines 931 and data lines 932, where the scan lines 931 and the data lines 932 intersect to define a plurality of sub-pixel regions 934, and sub-pixels 933 are disposed in the sub-pixel regions 934.

The display area 920 of the display panel 90 is used for displaying an image to be displayed.

For example, the display panel 90 may be an LCD panel, an OLED display panel, or other types of display panels known to those skilled in the art, and the embodiment of the invention is not limited thereto.

The non-display area 910 of the display panel 90 is used for disposing a driving circuit, an anti-static circuit, an integrated circuit, and other circuit structures known to those skilled in the art, and the embodiment of the invention is not limited thereto.

Illustratively, the non-display area 910 is shown in FIG. 3, by way of example only, as being disposed around the display area 920. In other embodiments, the non-display area 910 may be further configured to half surround the display area 920, or the non-display area 910 is adjacent to the display area 920 in the left and right directions, or other relative positions known to those skilled in the art may be adopted, which is not limited in this embodiment of the present invention.

The scan lines 931 and the data lines 932 may intersect vertically or non-vertically, which is not limited in the embodiment of the present invention.

It should be noted that fig. 3 shows only the scan lines 931 and the data lines 932 in a straight line as an example. In the actual product structure of the display panel 90, the actual shapes of the scan lines 931 and the data lines 932 may be set according to the actual requirements of the display panel 90, which is not limited in the embodiment of the invention.

Illustratively, only the sub-pixel region 934 is exemplarily shown in fig. 3 as a rectangle. In the actual product structure of the display panel 90, the shape of the sub-pixel region 90 may be set according to the wiring manner of the display panel 90 and other requirements, which is not limited in the embodiment of the invention.

It should be noted that fig. 3 only shows the scan lines 931 and the data lines 932 extending from the display area 920 to the non-display area 910 by way of example. In other embodiments, the lengths of the scan lines 931 and the data lines 932 and the relative position relationship between the scan lines and the data lines and the boundary of the display area 920 may also be set according to actual requirements of the display panel 90, which is not limited by the embodiment of the present invention.

Referring to fig. 4, based on the structure of the display panel, the driving method of the display panel includes:

and S110, acquiring an image to be displayed.

The image to be displayed may also be referred to as a picture to be displayed, and the image to be displayed is an image that needs to be displayed by the display panel. For example, the frame of image to be displayed may be a frame of picture in a static image or a frame of picture in a dynamic scene image.

For example, if the display panel is applied to a mobile phone, the mobile phone may include a main board (including a driving system) and an Integrated Circuit (IC) connecting the main board and the display panel. Based on this, the step may include the IC receiving the to-be-displayed picture output by the main board.

For example, if the display panel is applied to a computer, the computer may include a graphics card and an IC connecting the graphics card and the display panel. Based on this, the step may include the IC receiving the picture to be displayed output by the graphics card.

In other embodiments, when the display panel is applied to other display devices (or called electronic apparatuses), this step may include the IC obtaining the picture to be displayed by the overall control system of the display device, and the present invention does not limit the actual product structure form of the overall control system.

And S120, providing a display signal to the sub-pixel by using the scanning line and the data line according to the image to be displayed.

The display signals comprise scanning signals and data signals, and the scanning signals are used for starting the sub-pixels of the corresponding row so as to allow the data signals to be written in; the data signals are correspondingly written into the sub-pixels to present an image to be displayed.

Illustratively, in conjunction with fig. 3 and 5, the scan signal (Gate signal, shown in fig. 5 as Gate1, Gate2, Gate3, Gate4, Gate5, and Gate 6) includes a plurality of scan timing segments T connected in series _G0 Each scanning time sequence segment T _G0 Correspondingly triggering a row of sub-pixels 933; there is a sweepTime-sequence tracing segment T _G0 Comprises at least two scanning sub-time sequence segments (denoted by T in FIG. 5 respectively) _G1 、T _G2 、T _G5 、T _G6 And T _G7 Showing scan sub-timing segments), a scan timing segment T comprising scan sub-timing segments _G0 There is a difference in the duration of one scanning sub-sequence segment from the duration of another scanning sub-sequence segment. The scan sub-timing segments of unequal duration may exist in the same scan timing segment or may exist in different scan timing segments, as described in detail below.

Arranged such that during a scan period T of at least part of the scan signal _G0 Internal, i.e. a complete one scanning period T in the prior art _H-sync At least two scanning sub-sequence segments are set, so that the time length between the starting time of two continuous enabling levels (exemplified as high level in this text) in the scanning signal is not constant any more as the scanning period T _H-sync (ii) a Therefore, the inherent periodicity (also called inherent frequency characteristic) of the scanning signal can be damaged, the electromagnetic interference phenomenon caused by the fixed period of the scanning signal can be weakened, namely, the problem that the electromagnetic interference generated by the scanning signal is radiated to the periphery to cause the electromagnetic interference to other peripheral electronic products is solved, and the improvement of the performance of other electronic products on the vehicle is facilitated, namely the normal operation of other electronic products is facilitated.

Illustratively, this step may include the IC providing display signals associated with the image to be displayed to the subpixels using the scan lines and the data lines. When the image to be displayed changes, the display signal changes accordingly.

And S130, displaying the image to be displayed according to the display signal.

In a frame scanning period, each sub-pixel in the display panel can realize the refreshing of a complete image to be displayed after receiving a display signal.

Illustratively, the step may include the display panel displaying an image to be displayed according to the display signal. The duration of one frame of scanning period is corresponding to refreshing one frame of picture to be displayed. In one frame of scanning period, the scanning lines 931 arranged row by row may apply gate-on signals to the sub-pixels 933 of the corresponding row step by step, and at this time, data signals are written into each sub-pixel 933 of the row by the data lines 932.

In the driving method of the display panel provided by the embodiment of the invention, by setting the scanning time sequence section comprising the scanning sub time sequence section, the time length of one scanning sub time sequence section is different from the time length of the other scanning sub time sequence section, so that the time intervals between the starting moments of two continuous enabling levels (taking high level as an example in the text) of scanning signals are not completely the same, the inherent periodicity of the scanning signals is damaged, the generated radiation energy can be dispersed at more frequency positions, the energy value at a frequency doubling position is reduced, the electromagnetic interference is improved, and the normal work of electronic products around the display panel is favorably realized.

The following describes an exemplary manner of dividing the scanning time sequence segment into scanning sub-time sequence segments in the driving method of the display panel according to the embodiment of the present invention with reference to fig. 5 to 8.

Optionally, two scanning sub-timing segments with different time lengths are arranged in the same scanning timing segment T _G0 And (4) the following steps.

Illustratively, referring to FIG. 5 or FIG. 6, the same scan timing segment T _G0 In this case, the duration of one scanning sub-sequence segment is not equal to the duration of another scanning sub-sequence segment.

Illustratively, the scan time period T _G0 May include a first scan sub-sequence segment T _G1 And a second scanning sub-sequence segment T _G2 And the first scanning sub-sequence segment T _G1 And a second scanning sub-sequence segment T _G2 The duration of time is not equal; or, the scanning time sequence segment T _G0 May include a fifth scanning sub-sequence segment T _G5 Sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 And the fifth scanning sub-period T _G5 Sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 At least two of which are of unequal duration.

In other embodiments, a scan timing segment T may also be provided _G0 The number of the middle scanning sub time sequence segments is 4 or more, which is achieved by the embodiment of the inventionAre not repeated or limited.

On this basis, optionally, with continued reference to fig. 5 and 6, the same scan timing segment T _G0 And the time lengths of the scanning sub time sequence sections are not equal.

By the arrangement, the radiation energy of the display panel can be uniformly distributed at different frequency positions of the working frequency band, so that the energy value at the frequency doubling position of the scanning frequency is reduced, and the electromagnetic interference is improved.

Illustratively, the scan time period T _G0 Including a fifth scanning sub-sequence segment T _G5 The sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 Time, fifth scanning sub-sequence segment T _G5 The sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 Are each unequal.

Optionally, the two scanning sub-timing segments with different durations can also be set in different scanning timing segments T _G0 And (4) the following steps.

Illustratively, referring to FIG. 5, FIG. 6, or FIG. 7, a scan timing segment T _G0 The duration of one scanning sub-sequence segment and the duration of another scanning sequence segment T _G0 The duration of one scanning sub-sequence segment of (a) is unequal.

Illustratively, take FIG. 5 as an example, where the 1 st scan time period T _G0 First scanning sub-sequence segment T of _G1 Is not equal to the 2 nd scanning time sequence section T _G0 Second scanning sub-sequence segment T in _G2 The length of time of; 2 nd scan time period T _G0 First scanning sub-sequence segment T of _G1 Is not equal to the 3 rd scanning time sequence section T _G0 A fifth scanning sub-sequence segment T of _G5 Is also not equal to the 3 rd scan timing segment T _G0 A sixth scanning sub-sequence segment T of _G6 Is also not equal to the 3 rd scan timing segment T _G0 A seventh scanning sub-sequence segment T of _G7 The length of time. Take FIG. 6 as an example, in which the 1 st scan period T _G0 First scanning sub-sequence segment T of _G1 Is not equal to the 2 nd scanning time sequence section T _G0 Second scanning sub-sequence segment T in (1) _G2 The length of time.

It should be noted that, the above description only takes the driving timing shown in fig. 5 and 6 as an example, and two adjacent scanning timing sections T are taken as examples _G0 The setting of the scanning sub-sequence segments with different durations in different scanning sequence segments is described as an example. In other embodiments, scan sub-timing segments with different durations may also be set to be located in non-adjacent scan timing segments, which is not described again nor limited in this embodiment of the present invention.

It can be understood that when the scanning time sequence segment includes the scanning sub-time sequence segment, that is, when one scanning time sequence segment is set in a segmented manner, the segmentation mode of the scanning time sequence segment may be multiple, and on the basis of the segmentation of the scanning time sequence segment, the arrangement sequence of the scanning time sequence segments in different segmentation modes may be flexibly set according to the actual requirements of the display panel, and four different segmentation modes and arrangement modes are exemplarily described below with reference to fig. 5 to 8.

Illustratively, referring to FIG. 5, FIG. 7, or FIG. 8, a plurality of scan timing segments T _G0 Including multiple types of scan time segments T _G0 (ii) a Each scan time sequence segment T of each type _G0 All comprise the same number of scanning sub-time sequence segments distributed with the same time length and different types of scanning time sequence segments T _G0 The scanning sub-timing segments in (1) are different; wherein there are two adjacent scan time segments T _G0 Are set to different types of scan timing segments.

Illustratively, two different types of scan timing segments T are shown in FIG. 5 _G0 One type of scan timing segment T _G0 Comprising a first scanning sub-sequence segment T _G1 And a second scanning sub-sequence segment T _G2 The scanning time sequence section T _G0 Can be represented by type A; another type of scan timing segment T _G0 Including a fifth scanning sub-sequence segment T _G5 The sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 The scanning time sequence section T _G0 Can be represented by type B; the arrangement order of type a and type B in fig. 5 is: AABAAB.

Illustratively, two different types are shown in FIG. 7Scanning time sequence segment T _G0 One type of scan period T _G0 Comprising two first scanning sub-sequence segments T _G1 The scanning time sequence section T _G0 Can be represented by type C; another type of scan timing segment T _G0 Comprising two second scanning sub-sequence segments T _G2 The scanning time sequence section T _G0 Can be represented by type D; the arrangement order of type C and type D in fig. 7 is: CDCD.

FIG. 8 is a schematic diagram illustrating a comparison between the driving timing provided by the embodiment of the present invention and the driving timing in the prior art, wherein three different types of scan timing segments T are shown _G0 One type of scan timing segment T _G0 Comprising a first scanning sub-sequence segment T _G1 And a second scanning sub-sequence segment T _G2 The scanning time sequence section T _G0 Can be represented by type A; another type of scan timing segment T _G0 Including a fifth scanning sub-sequence segment T _G5 The sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 The scanning time sequence section T _G0 Can be represented by type B; yet another type of scan timing segment T _G0 Including a third scanning sub-sequence segment T _G3 And a fourth scanning sub-sequence segment T _G4 The scanning time sequence section T _G0 The type E can be used for representation, and the arrangement sequence of the type A, the type B and the type E in FIG. 8 is as follows: AEBAEB.

On the basis, the arrangement sequence of the type A, the type B and the type E can also be as follows:

the first sequence is as follows: abeababe;

and a second sequence: AABBEEAABBEE;

and the sequence is three: aaabbbbeeeeaaabbbee;

and the sequence is four: abeeeabeee;

and a fifth sequence: ABBEEABBEEABBEE.

In other embodiments, a scan timing segment T may also be provided _G0 Is a type of scan time segment T _G0 As shown in fig. 6, the scanning time period T _G0 Comprising a first scanning sub-sequence segment T _G1 And a second scanning sub-sequence segment T _G2 The scanning time sequence section T _G0 Can be represented by type a, then the arrangement order of type a in fig. 6 is: AAAAAA.

In other embodiments, a scan timing segment T may also be provided _G0 A scanning time period T of a part of _G0 Including a scan sub-sequence segment, another part of the scan sub-sequence segment T _G0 Not split (as in fig. 11); furthermore, the dividing manner of the divided scan timing segments may be the same or different, and the inherent periodic characteristics of the scan signal may be destroyed, which is not limited in the embodiment of the present invention.

Optionally, different types of scan time segments T _G0 The arrangement is spaced.

Thus, flexible setting of the scanning sub-sequence segments can be realized.

Illustratively, the scan time period T _G0 When the types of (D) include type A, type B, type C, type D and type E, the scan time period T _G0 The setting mode of (2) may include:

the first method is as follows: ABCDEABCEABCDDE;

the second method comprises the following steps: ACBEDACBED;

the third method comprises the following steps: ADEBCADEBC;

the method four comprises the following steps: aecdbanedb.

In other embodiments, each different type of scan time segment T _G0 The order of arrangement may also be other ways known to those skilled in the art; and a scanning time sequence segment T _G0 The number of types of the optical fiber can also be other numbers, which are not limited by the embodiment of the invention.

Optionally, with continued reference to FIG. 6, a scan timing segment T comprising scan sub-timing segments _G0 In each scanning time sequence section T _G0 All including the same number of scan sub-timing segments distributed with the same duration.

By the arrangement, a driving algorithm corresponding to the driving method is simpler.

Illustratively, the 6 scan time periods T shown in FIG. 6 _G0 In each scanning time sequence section T _G0 Each including 2 scanning sub-time sequence segments, which are the first scanning sub-time sequence segment T _G1 And a second scanning sub-sequence segment T _G2 Each first scanning sub-sequence segment T _G1 Are all equal in duration, each second scanning sub-sequence segment T _G2 Are all equal in duration.

In other embodiments, a scan timing segment T comprising a scan sub-timing segment _G0 In the present invention, the number of the scanning sub-timing segments and the time length distribution mode may also be set according to the actual requirements of the driving method of the display panel, which is not limited in the embodiment of the present invention.

Optionally, a scan timing segment T comprising scan sub-timing segments _G0 In each scanning time sequence section T _G0 The number of scan sub-sequence segments included being different, or the scan sequence segment T including scan sub-sequence segments _G0 In the method, the time lengths of scanning sub time sequence segments included in each scanning time sequence segment are different; or a scan timing segment T comprising a scan sub-timing segment _G0 In the method, the number of the scanning sub-sequence segments included in each scanning sequence segment is different, and the time lengths of the scanning sub-sequence segments included in each scanning sequence segment are different.

Therefore, the distribution uniformity of the radiation energy in the working frequency range of the display panel is better, and the electromagnetic interference phenomenon is favorably improved.

Illustratively, the scan time period T _G0 The number of scan sub-sequential segments in (a) may be 2, 3, or more; in particular, there is a partial scan timing segment T _G0 Without division, it can be considered that the number of scan sub-sequential segments it includes is 1.

Illustratively, the duration of the scan sub-timing segment may be the duration T of the scan timing segment _G0 1/2, 3/1 or less; in particular, there is a partial scan timing segment T _G0 Without segmentation, it can be considered that the duration of the scan sub-timing segment included therein is equal to the scan timing segment T _G0 The length of time.

Illustratively, when the display panel includes 3 rows of sub-pixels, the scan signal includes three scan time periods T _G0 Each scanning time sequence section T _G0 The number of included scanning sub-sequence segments can be 1, 2 and 3 respectively; correspondingly, the duration of the scanning sub-sequence segment can be the scanning sequence segment T in turn _G0 Time of day, 1/2 thereof, and 1/3 thereof.

In other embodiments, the scan time period T can be flexibly set according to the actual requirements of the display panel and the driving method thereof _G0 The dividing method of (2) and the arrangement order of the scan timing sections of the different methods are not limited in the embodiment of the present invention.

Alternatively, referring to fig. 9, the display panel 90 may further include a scan driving circuit 950, a first clock signal line 951 and a second clock signal line 952, the scan driving circuit 950 includes scan driving units 955, each scan driving unit 955 includes a first clock input terminal CK1, a second clock input terminal CK2, a scan trigger signal receiving terminal IN1 and a scan signal output terminal OUT 1; the first clock signal line 951 is electrically connected to the first clock input terminal CK1, the second clock signal line 952 is electrically connected to the second clock input terminal CK2, and the scan line 931 is electrically connected to the scan signal output terminal OUT 1. The display panel 90 further includes a scan shift register trigger signal line 953, the scan shift register trigger signal line 953 is electrically connected to a scan trigger signal receiving terminal IN1 of the first stage scan driving unit 955, and then the scan trigger signal receiving terminal IN1 of the each stage scan driving unit 955 is electrically connected to a scan signal output terminal OUT1 of the last stage scan driving unit 955 through a scan shift signal line 9311.

Illustratively, the scan driver circuit 950 is configured to generate scan signals according to clock signals provided from a first clock signal line 951 and a second clock signal line 952; the circuit element structure and the operating principle of the scan driving circuit 950 may adopt any structure and corresponding operating principle known to those skilled in the art, and are not described herein nor limited in the embodiments of the present invention.

On this basis, referring to fig. 10, the driving method of the display panel may include:

and S210, acquiring an image to be displayed.

Thereafter, S220 is performed, and S220 may include S221, S222, and S223.

And S221, respectively providing a first clock signal and a second clock signal to the scanning driving circuit by using the first clock signal line and the second clock signal line according to the image to be displayed.

Wherein byAt least one clock segment (including the first clock segment and the second clock segment) of the first clock signal CKV1 and the second clock signal CKV2 is segmented, so that the scanning time segment T can be segmented _G0 To achieve the effect of destroying the inherent periodicity of the scanning signal, thereby improving the electromagnetic interference phenomenon.

Illustratively, referring to fig. 11 and 12, the first clock signal CKV1 includes a plurality of first clock segments T connected in series _C1 The second clock signal CKV1 includes a plurality of second clock segments T connected in series _C2 First clock period T _C1 And a second clock segment T _C2 A plurality of scanning time sequence sections T which are arranged at intervals in sequence and are correspondingly connected in series in sequence _G0 (ii) a Wherein each scanning time sequence segment T _G0 Both the start time and the end time of (2) are the first clock period T _C1 And a second clock segment T _C2 The start time and the end time of (c).

Illustratively, in FIG. 11, the 1 st scan time period T _G0 (i.e., the scanning time period T of Gate1 _G0 ) Is the 1 st first clock segment T of the first clock signal CKV1 _C1 The start time and the end time of (c); 2 nd scan time period T _G0 (i.e., the scanning time period T of Gate2 _G0 ) Is the 1 st second clock segment T of the second clock signal CKV2 _C2 The start time and the end time, and so on, and will not be described in detail later.

On the basis, clock segments (including the first clock segment T) _C1 And a second clock segment T _C2 ) The manner of performing the segmentation may include:

the first method is as follows: dividing only part of the first clock segment T _C1 I.e. there is a first clock period T _C1 At least two first subsegments are included, and the duration of one first subsegment is different from the duration of another first subsegment.

Thus, the scanning time sequence T corresponding to at least part of odd-row sub-pixels can be realized _G0 Is divided.

Illustratively, referring to FIGS. 11 and 12, the 1 st first clock period T _C1 And 2 nd first clock period T _C1 All compriseA sub-segment; 1 st first clock period T _C1 Comprising a first section T _C11 And a first B segment T _C12 2 nd first clock period T _C1 Comprising a first third segment T _C13 First T sub-section _C14 And a first pentylene segment T _C15 (ii) a Wherein the first A section T _C11 A first B segment T _C12 A first third segment T _C13 A first T sub-segment _C14 And a first pentylene segment T _C15 Respectively corresponding to the first scanning sub-time sequence section T _G1 A second scanning sub-sequence segment T _G2 The fifth scanning sub-sequence segment T _G5 The sixth scanning sub-sequence segment T _G6 And a seventh scanning sub-sequence segment T _G7 The time length of at least two scanning sub time sequence sections in the scanning time sequence section can be unequal by setting the time length of two subsections existing in the first subsection to be unequal, so that the time intervals between the starting moments of two continuous enabling levels can be not identical, the inherent periodicity of scanning signals is damaged, and the electromagnetic interference is reduced.

The second method comprises the following steps: dividing only part of the second clock segment T _C2 I.e. there is a second clock segment T _C2 At least two second sub-segments are included, and the duration of one second sub-segment is different from the duration of another second sub-segment.

Thus, the scanning time sequence section T corresponding to at least part of even-row sub-pixels can be realized _G0 Is divided.

Illustratively, referring to FIGS. 11 and 12, the 1 st second clock segment T _C2 Comprises second subsections respectively provided with second subsections T _C21 And a second ethyl sub-segment T _C22 Shown; wherein the second sub-segment T _C21 And a second ethyl sub-segment T _C22 Respectively corresponding to the third scanning sub-time sequence segment T _G3 And a fourth scanning sub-sequence segment T _G4 The time length of at least two scanning sub time sequence sections in the scanning time sequence section can be unequal by setting the time length of two subsections existing in the second subsections to be unequal, so that the time intervals between the starting moments of two continuous enabling levels can be not identical, the inherent periodicity of scanning signals is damaged, and the electromagnetic interference is reduced.

The third method comprises the following steps: first clock period T _C1 And a second clock segment T _C2 Are all divided, i.e. there is a first clock period T _C1 Comprising at least two first subsegments, and having a duration of one first subsection which is different from the duration of another first subsection, and having a second clock segment T _C2 At least two second sub-segments are included, and the duration of one second sub-segment is different from the duration of another second sub-segment.

Thus, the scanning time sequence T corresponding to at least part of odd-row sub-pixels can be realized _G0 Is divided, and can realize the scanning time sequence section T corresponding to at least partial even-numbered line sub-pixels _G0 Is divided.

Illustratively, referring to FIGS. 11 and 12, the 1 st first clock period T _C1 Comprising a first section T _C11 And a first B segment T _C12 1 st second clock segment T _C2 Comprising a second dimethyl segment T _C12 And a second ethyl sub-segment T _C22 (ii) a By setting the time length of two subsections existing in the first subsection to be unequal and the time length of two subsections existing in the second subsection to be unequal, the time lengths of at least two scanning subsequences in the scanning sequence section can be unequal, so that the time intervals between the starting moments of two continuous enabling levels can be not identical, the inherent periodicity of scanning signals is damaged, and the electromagnetic interference is reduced.

In other embodiments, the first sub-section and the second sub-section may have different durations, so as to destroy the periodicity of the scanning signal and reduce the electromagnetic interference generated by the display panel to electronic products disposed around the display panel.

In other embodiments, only a portion of the first clock segment T may be provided _C1 Is divided into first clock segments T _C1 Are equal in time length, so that the first sub-section is equal to the first clock section T _C1 The duration of time is not equal; or only a part of the second clock segment T _C2 Is divided and the second clock segment T _C2 Are all equal in duration, so that the second sub-section is equal to the second clock section T _C2 The duration of time varies. Thus, incomplete time interval between the start moments of two successive enable levels in the scanning signal can be realizedAnd simultaneously, electromagnetic interference is reduced.

Illustratively, fig. 12 is a schematic diagram comparing the driving timing provided by the embodiment of the present invention with the driving timing in the prior art, wherein CKV1 'and CKV 2' represent the first clock signal and the second clock signal in the prior art, respectively. By comparing the driving timing sequence in the embodiment of the present invention with the driving timing sequence in the prior art, it can be known that the embodiment of the present invention can realize the division of the scanning timing sequence segment of the scanning signal by dividing the clock segment, thereby achieving the purpose of destroying the inherent periodicity of the scanning signal and improving the electromagnetic interference.

And S222, generating a scanning signal by using a scanning driving circuit according to the first clock signal and the second clock signal.

Wherein the overall timing of the scan signal is consistent with the overall timing of the first and second clock signals.

Illustratively, the clock signal includes, in sequence, a first clock segment T over time _C1 A second clock segment T _C2 A first clock period T _C1 A second clock segment T _C2 A first clock period T _C1 And a second clock segment T _C2 (ii) a Correspondingly, the scanning signal comprises a scanning time sequence section T of the Gate1 signal in turn _G0 Gate2 signal scanning time sequence section T _G0 Gate3 signal scanning time sequence section T _G0 Gate4 signal scanning time sequence section T _G0 Gate5 signal scanning time sequence section T _G0 And a scan time period T of the Gate6 signal _G0 。

S223, supplying a scan signal to the subpixel, and supplying a data signal to the subpixel.

Illustratively, a scan signal is supplied to the sub-pixels through the scan lines to allow data signal writing; and writing a data signal into the sub-pixels of the opened row through the data line in the enabling level duration period of the gate opening signal of the sub-pixels of the current row so as to update the data signal.

And S230, displaying the image to be displayed according to the display signal.

Therefore, refreshing of one frame of image presented by the display panel is achieved.

With continued reference to fig. 12, in the above embodiment, the time length of each first sub-segment and each second sub-segment may be set in a manner similar to the time length of each scanning sub-timing segment of the scanning signal.

Optionally, the durations of the first sub-segments are different.

Therefore, the time length of each scanning sub-time sequence section in the scanning time sequence section corresponding to the sub-pixels of the odd-numbered rows can be different.

Optionally, the durations of the second sub-segments are different.

Therefore, the time length of each scanning sub-time sequence section in the scanning time sequence section corresponding to the sub-pixels of the even number rows can be different.

Optionally, the durations of the first sub-segments are different, and the durations of the second sub-segments are different.

Therefore, the length of time of each scanning sub-time sequence section in the scanning time sequence section corresponding to the sub-pixels of the odd-numbered rows can be different; and the time length of each scanning sub-time sequence section is different in the scanning time sequence section corresponding to the sub-pixels of the even number rows.

In other embodiments, the time lengths of each first sub-segment and each second sub-segment may be set to be different, or a time sequence setting manner similar to the scanning sub-time sequence segment in the above embodiments may also be adopted for setting, which may be flexibly selected according to actual requirements of the display panel and the driving method thereof, and this is not limited in the embodiment of the present invention.

Alternatively, referring to fig. 13 and 14, the sub-timing segment is scanned (at T) _G2 For example) includes an effective signal period T _G01 And an invalid signal period T _G02 (ii) a Wherein the charging period of the Data signal (Data signal, Data1, Data2, and Data3 shown in fig. 13 and 14, respectively) is in the effective signal period T _G01 And each active signal period T _G01 The charging period of at least one data signal is covered.

Wherein the effective signal period T _G01 The control switch of the sub-pixel is opened to allow the data signal to be written; while the inactive signal period T _G02 Control switch for internal and sub-pixelAnd closing the display, wherein the data signals are not written into the sub-pixels any more at the moment, and the level of the data signals does not influence the display effect.

Exemplarily, in fig. 13, each Data signal corresponds to a sub-pixel of one color, specifically: data1 corresponds to the red (R) sub-pixel, Data2 corresponds to the green (G) sub-pixel, and Data3 corresponds to the blue (B) sub-pixel; meanwhile, fig. 13 shows only the six-level Gate signals, which are Gate1, Gate2, Gate3, Gate4, Gate5, and Gate6, for example; but are not to be construed as limiting the display panel in the embodiment of the present invention. In other embodiments, the number of the Date signals and the Gate signals may be set according to actual requirements of the display panel, which is not limited in the embodiment of the present invention.

Illustratively, in FIG. 13, one active signal period T _G01 The number of the charge periods of the data signal covered is 1 or 2.

In other embodiments, one valid signal period T _G01 The number of the covered charging periods of the data signal may also be 3 or more, and may be set according to actual requirements of the display panel and the driving method thereof, which is not limited in the embodiment of the present invention.

It is understood that fig. 13 only shows an example in which the data voltage is maintained at 0V in the charging gap between two adjacent charging periods, which is represented by a line segment without width in fig. 13. In other embodiments, in the period of the charging gap, the data signals corresponding to the sub-pixels of each color may also maintain their respective voltage signals in the charging period, that is, the charging gap is filled in a data maintaining manner, and the data maintaining time of the data signals corresponding to the sub-pixels of different colors may be different, and may be set according to actual requirements of the display panel and the driving method thereof, which is not limited in the embodiments of the present invention. Optionally, a certain response time is required for turning on and off the control switch of the sub-pixel, and the specific time duration may be determined according to the actual structure and electrical parameters of the control switch of the sub-pixel, which is not described in detail in the embodiments of the present invention. Based on this, in order to ensure normal writing of the data signal, it is necessary to set a valid signal period T _G01 With a leading margin with respect to the charging period of the data signal, orEither with the back margin or with both the front margin and the back margin.

Illustratively, with continued reference to fig. 13 and 14, the valid signal period T _G01 Is earlier than the initial write time of the charge period of the data signal corresponding thereto.

Thus, the effective signal period T can be realized _G01 Has a leading margin with respect to a charging period of the data signal.

Illustratively, the valid signal period T _G01 Is later than the end write time of the charge period of the data signal corresponding thereto.

Thus, the effective signal period T can be realized _G01 Has a back margin with respect to the charging period of the data signal.

Illustratively, the valid signal period T _G01 Is earlier than the initial write time of the charge period of the data signal corresponding thereto, and the effective signal period T _G01 Is later than the end write time of the charge period of the data signal corresponding thereto.

Thus, the effective signal period T can be realized _G01 The charge period with respect to the data signal has both the front margin and the rear margin.

Therefore, the data signals can be ensured to be written in the time period when the control switch of the sub-pixel is completely opened, and the display panel is ensured to have better display effect; meanwhile, power consumption on the data line can be saved.

Optionally, referring to fig. 15, the display panel may further include a multi-path selection circuit 940, a plurality of data source lines 942 and m data selection signal lines 943, where the multi-path selection circuit 940 includes a plurality of multi-path selection units 941, an input end of one multi-path selection unit 941 is disposed corresponding to and electrically connected to one data source line 942, the multi-path selection unit 941 has m output ends and m control ends, m output ends of one multi-path selection unit 941 are disposed corresponding to and electrically connected to m data lines 932, and m data selection signal lines 943 are disposed corresponding to and electrically connected to m control ends of each multi-path selection unit 941.

Taking an operation mode in which the multiplexing units 941 in the multiplexing circuit 940 are 1 dm, each multiplexing unit 941 is configured to transmit a data signal on one data source line 942 to m data lines 932 in a time-sharing manner; the specific timing of the time-sharing control can be provided by the data selection signal line 943.

Exemplarily, referring to fig. 15 and 16, m takes a value of 3; the operation of the multiplexing unit 941 is described as follows.

One of the multiplexing units 941 includes 3 control switches, which are shown as N-type Thin Film Transistors (TFTs), and the input terminals of the 3 control switches are connected to the same data source line 942, 3 control terminals are connected to 3 different data selection signal lines 943, and 3 output terminals are connected to 3 different data lines 932. When the first data selection signal line 9431 controls the first control switch 9451 to be turned on, the data signal on the data source line 942 is transmitted to the first data line 9321 through the first control switch 9451, when the second data selection signal line 9432 controls the second control switch 9452 to be turned on, the data signal on the data source line 942 is transmitted to the second data line 9322 through the second control switch 9452, when the third data selection signal line 9433 controls the third control switch 9453 to be turned on, the data signal on the data source line 942 is transmitted to the third data line 9323 through the third control switch 9453, the enable signals on the 3 data selection signal lines 943 are sequentially staggered in timing, and thus the charging periods of the data signals on the 3 data lines 932 are sequentially staggered in timing.

In other embodiments, the number of the data source lines 942, the data selection signal lines 943 and the data lines 932 connected to each multiplexing unit 941 may also be set according to the actual requirements of the display panel 90, which is not limited in this embodiment of the present invention.

In other embodiments, the control switches in one multiplexing unit 941 may also be all P-type thin film transistors, or a combination of P-type thin film transistors and N-type thin film transistors; or other switch control structures known to those skilled in the art, and the embodiments of the present invention are not limited thereto.

On this basis, referring to fig. 17, the driving method of the display panel may include:

and S310, acquiring an image to be displayed.

Thereafter, S320 is performed, and S320 may include S321 and S322.

And S321, providing data selection control signals to the data selection signal lines according to the image to be displayed, and providing data signals to the data lines by the signals of the data source lines through the multi-path selection unit under the control of the corresponding data selection control signals.

The time sequence of the data signals is consistent with the time sequence of the corresponding data selection control signals, and in the effective signal period of each scanning time sequence section of the grid opening signal, a plurality of data signals corresponding to the same row are written into the sub-pixels corresponding to the row.

Wherein the active period of the data selection control signal is within the duration of the active signal period and each active signal period covers the active period of at least one data selection control signal.

Illustratively, referring to fig. 15 and 18, the scan signal (Gate signal) includes a plurality of scan timing segments T arranged in sequence _G0 It is understood that the scanning time period T includes Gate1 signals arranged in sequence _G0 Gate2 signal scanning time sequence section T _G0 Gate3 signal scanning time sequence section T _G0 Gate4 signal scanning time sequence section T _G0 Gate5 signal scanning time sequence section T _G0 And a scan timing section T of the Gate6 signal _G0 (ii) a Wherein each scanning time sequence segment T _G0 Correspondingly triggering a row of sub-pixels 933; each Data selection control signal (e.g., SW1, SW2, and SW3) is written corresponding to a Data signal (e.g., Data1, Data2, and Data3) controlling at least one column of sub-pixels 933.

S322, the data line provides the data signal to the sub-pixel, and the scan line provides the scan signal to the sub-pixel.

Illustratively, the scan signals are supplied to the subpixels row by row through the scan lines to allow data signal writing; in the enabling level duration period (namely, the effective action period) of the scanning signals of the sub-pixels of the current row, data signals are written into the turned-on sub-pixels of the row through the data lines so as to update the data signals.

And S330, displaying the image to be displayed according to the display signal.

Next, the relationship among the scan timing section, the scan sub timing section, and the number of active periods of the data selection control signal is exemplarily explained.

Optionally, with continued reference to FIG. 18, a scan time period T _G0 The scanning device comprises mj scanning sub time sequence segments, wherein the effective signal time period of the ith scanning sub time sequence segment covers the effective action time period of mi data selection control signals;

wherein the content of the first and second substances,

m, mj and mi are positive integers which are more than 0, and i is more than or equal to 1 and less than or equal to mj.

Thus, the same scanning time period T _G0 The sum of the number of active periods of the data selection control signal covered by each scanning sub-sequence section in (1) is equal to the number of data selection control signal lines.

Meanwhile, the number of effective action time periods of the data selection control signal covered by each scanning sub time sequence segment can be flexibly set according to the actual requirements of the display panel and the driving method thereof.

Exemplarily, m — 3: when mj is 2, the value of i can be 1 or 2; the number of the effective action time periods of the data selection control signals covered by the 1 st scanning sub time sequence section is 1, and the number of the effective action time periods of the data selection control signals covered by the 2 nd scanning sub time sequence section is 2; or the number of the effective action periods of the data selection control signal covered by the 1 st scanning sub-sequence segment is 2, and the number of the effective action periods of the data selection control signal covered by the 2 nd scanning sub-sequence segment is 1.

Exemplarily, m — 3: when mj is 3, the value of i can be 1, 2 or 3; at this time, the number of effective action periods of the data selection control signal covered by the 1 st scanning sub-sequence segment, the 2 nd scanning sub-sequence segment, and the 3 rd scanning sub-sequence segment is 1.

In the above embodiments, the values of m, i, mj, and mi are only exemplary illustrations. In other embodiments, the values of m, i, mj, and mi may also be set according to actual requirements of the display panel and the driving method thereof, which is not limited in the embodiments of the present invention.

Optionally, when the display panel is an OLED display panel, since the display panel performs display by using a current driving method, the display panel further includes a light emitting control signal line, and correspondingly, the display signal further includes a light emitting control signal. Hereinafter, the description will be made exemplarily with reference to fig. 19 to 24.

For example, referring to fig. 19 and 20, when the display panel is an OLED display panel, the display panel 90 may further include a light-emitting control signal line 935, where the light-emitting control signal line 935 and the scan line 931 extend in the same direction (in the figure, the light-emitting control signal line and the scan line are parallel to each other), and in an actual product structure of the display panel, an actual form of the light-emitting control signal line may be set according to an actual requirement of the display panel, which is not limited in the embodiment of the present invention. The emission control signal line 935 is used to supply an emission control signal (i.e., an Emit signal, shown as Emit1, Emit2, Emit3, Emit4, Emit5, and Emit6 in fig. 20) to one row of sub-pixels.

In the OLED display panel, the sub-pixels may include OLED elements and pixel driving circuits, and the pixel driving circuits may include driving transistors, storage capacitors, reset transistors, and other circuit structures known to those skilled in the art. Based on this, the driving timing of one sub-pixel in one frame may include a threshold grabbing phase (i.e., a data writing phase) and a light emitting phase. And a threshold value capturing stage, wherein a data signal is written into the sub-pixel, and a light emitting stage, the sub-pixel emits light. Meanwhile, in order to ensure that the OLED display panel has a better display effect, a reset stage (namely an initialization stage) is also arranged; in the reset phase, the electrode of the OLED element connected with the transistor and the plate of the storage capacitor connected with the driving transistor are reset, so that the signal of the previous frame is ensured not to have influence on the display of the next frame, and the threshold voltage drift of the driving transistor is ensured not to have influence on the display effect.

Next, referring to fig. 21, a pixel driving circuit having a threshold value compensation function is taken as an example to exemplarily explain driving timing of sub-pixels.

Illustratively, referring to fig. 21, the driving sequence may include an initialization period T ₅₁ Threshold grabbing stage T ₅₂ And a light emission period T ₅₃ . Wherein:

initialization phase T ₅₁ : the first Scan signal Scan1 includes a Scan sub-timing period having at least one enable level period when the plate of the storage capacitor connected to the driving transistor is reset.

Threshold grabbing stage T ₅₂ : the second Scan signal Scan2 includes a Scan sub-timing segment having at least one enable level period, at which a data signal is written to the gate of the driving transistor.

Light emission phase T ₅₃ : the emission control signal Emit includes an emission sub-timing segment having at least one enable level period. At this time, a current between the gate and the source of the driving transistor flows through the OLED element, and the OLED element is driven to emit light.

Illustratively, referring to fig. 20 and 21, the light emission control signal includes a plurality of light emission time-period T serially connected in series _E0 (denoted by T in FIG. 21 ₅₃ Showing the timing section) there is a light emission timing section T _E0 Comprising at least two light-emitting sub-sequence segments (denoted by T in FIG. 20) _E1 、T _E2 、T _E3 、T _E4 、T _E5 、T _E6 And T _E7 Shown) and the duration of the presence of one light emitting sub-period is not equal to the duration of another light emitting sub-period. The light-emitting sub-timing segments with different durations may exist in the same light-emitting timing segment or in different light-emitting timing segments, and the description of the scanning timing segment and the scanning sub-timing segment can be referred to for understanding, and will not be described in detail below.

Arranged such that during a light emission period T of at least part of the light emission control signal _E0 At least two light-emitting sub-sequence segments are set, so that the time length between the starting moments of two successive enabling levels (exemplified as high level herein) in the light-emitting control signal is not constant to be a complete oneLight-emitting time sequence section T _E0 The length of time of; therefore, the inherent periodicity (also called inherent frequency characteristic) of the light-emitting control signal can be damaged, and further the electromagnetic interference phenomenon caused by the fixed period of the light-emitting control signal can be weakened, namely the problem that the electromagnetic interference generated by the light-emitting control signal is radiated to the periphery to cause electromagnetic interference on other electronic products possibly existing at the periphery of the display panel is solved, and the improvement of the performance of other electronic products at the periphery of the display panel is facilitated, namely the normal operation of other electronic products is facilitated.

The setting manner of the light-emitting time sequence segment and the light-emitting sub-time sequence segment is similar to the setting manner of the scanning time sequence segment and the scanning sub-time sequence segment, and can be flexibly set according to the actual requirements of the display panel and the driving method thereof, which is not limited in the embodiment of the invention.

Alternatively, referring to fig. 22, the display panel 90 may further include a light-emitting driving circuit 960, a third clock signal line 961 and a fourth clock signal line 962, the light-emitting driving circuit 960 includes a plurality of light-emitting driving units 966, and each of the light-emitting driving units 966 includes a third clock input terminal CK3, a fourth clock input terminal CK4, a light-emitting trigger signal receiving terminal IN2 and a light-emitting signal output terminal OUT 2; the third clock signal line 961 is electrically connected to the third clock input terminal CK3, the fourth clock signal line 962 is electrically connected to the fourth clock input terminal CK4, and the light-emission control signal line 935 is electrically connected to the light-emission signal output terminal OUT 2. The display panel 90 further includes a light emitting shift register trigger signal line 963, the light emitting shift register trigger signal line 963 is electrically connected to the light emitting trigger signal receiving terminal IN2 of the first stage light emitting driving unit 966, and then the light emitting trigger signal receiving terminal IN2 of each stage light emitting driving unit 966 is electrically connected to the light emitting signal output terminal OUT2 of the last stage light emitting driving unit 966 through the light emitting shift signal line 9351.

For example, the light-emitting driving circuit 960 is configured to generate the light-emitting control signal according to the clock signals provided by the third clock signal line 961 and the fourth clock signal line 962, and the circuit element structure and the operation principle of the light-emitting driving circuit 960 may adopt any structure and corresponding operation principle known by those skilled in the art, which is not described in detail nor limited in the embodiments of the present invention.

It should be noted that fig. 22 only exemplarily shows that the light-emitting driving circuit 960 and the scanning driving circuit 950 are respectively and independently disposed in the non-display region 910 on two opposite sides of the display region 920, but do not constitute a limitation to the display panel 90 provided in the embodiment of the present invention. In other embodiments, the relative position relationship between the light-emitting driving circuit 960 and the scanning driving circuit 950 in the non-display region 910 of the display panel 90 may be set according to the actual requirements of the display panel and the driving method thereof, and may be located at adjacent sides, or may be located at the same side, which is not limited in this embodiment of the invention.

On this basis, referring to fig. 23, the driving method of the display panel may include:

and S410, acquiring an image to be displayed.

Thereafter, S420 is performed, and S420 may include S421, S422, and S423.

And S421, respectively providing a third clock signal and a fourth clock signal to the light-emitting driving circuit by using the third clock signal line and the fourth clock signal line according to the image to be displayed.

By segmenting at least one of the third clock signal CKV3 and the fourth clock signal CKV4 (including the third clock segment and the fourth clock segment), the light-emitting time sequence segment can be segmented, so that the inherent periodicity of the light-emitting control signal can be destroyed, and the electromagnetic interference phenomenon can be further improved.

Illustratively, referring to fig. 24, the third clock signal CKV3 includes a plurality of third clock segments T connected in series _C3 The fourth clock signal CKV4 includes a plurality of fourth clock segments T connected in series _C4 Third clock segment T _C3 And a fourth clock segment T _C4 Sequentially arranged at intervals and corresponding to a plurality of light-emitting time-sequence sections T which are sequentially connected _E0 (ii) a Wherein each light-emitting time sequence section T _E0 Both the start time and the end time of (c) are the third clock segment T _C3 And a fourth clock segment T _C4 The start time and the end time of (c).

Illustratively, in FIG. 24, the 1 st light emission timing section T _E0 (i.e. emission time sequence segment T of Emit1 _E0 ) Is the 1 st third clock segment T of the third clock signal CKV3 _C3 The start time and the end time of (c); the 2 nd light-emitting time sequence section T _E0 (i.e. emission time sequence segment T of Emit2 _E0 ) Is the 1 st fourth clock segment T of the fourth clock signal CKV4 _C4 The start time and the end time, and so on, and will not be described in detail later.

On the basis of the above-mentioned clock segments (including third clock segment T) _C3 And a fourth clock segment T _C4 ) The manner of performing segmentation may include:

the first method is as follows: splitting only the third clock segment T _C3 I.e. the presence of the third clock segment T _C3 At least two third sub-segments are included, and there is one third sub-segment having a duration different from that of another third sub-segment.

Thus, the light-emitting time sequence section T corresponding to at least part of the odd-numbered sub-pixels can be realized _E0 Is divided.

Illustratively, referring to FIG. 24, the 1 st third clock segment T _C3 And 2 nd third clock segment T _C3 Each including a third subsection; 1 st third clock segment T _C3 Comprising a third section T _C31 And a third subsection T _C32 2 nd third clock segment T _C3 Comprising a third propylene section T _C33 A third T sub-section _C34 And a third pentylene segment T _C35 (ii) a Wherein the third subsection T _C31 A third subsection T _C32 A third terminal section T _C33 A third T sub-section _C34 And a third pentylene segment T _C35 Respectively corresponding to the first light-emitting photon time sequence section T _E1 A second light-emitting sub-time sequence section T _E2 The fifth light-emitting sub-time sequence section T _E5 The sixth light-emitting sub-time sequence section T _E6 And a seventh light emission sub-period T _E7 The time length of at least two luminous sub time sequence sections in the luminous time sequence section is unequal by setting the time length of two sub sections in the third sub section to be unequal, so that the time intervals between the starting moments of two continuous enabling levels are not completely the same, the inherent periodicity of the luminous control signal is damaged, and the electromagnetic interference is reduced.

The second method comprises the following steps: by dividing only the fourth clock segment T _C4 I.e. there is a fourth clock segment T _C4 At least two fourth subsegments are included, and there is one fourth subsegment having a duration that is different from the duration of another fourth subsegment.

Thus, the light-emitting time sequence section T corresponding to at least part of even-numbered rows of sub-pixels can be realized _E0 Is divided.

Illustratively, referring to FIG. 24, the 1 st fourth clock segment T _C4 Comprising a fourth subsection T _C41 And a fourth sub-segment T _C42 Shown; wherein the fourth sub-segment T _C41 And a fourth sub-segment T _C42 Respectively corresponding to the third scanning sub-time sequence segment T _E3 And a fourth scanning sub-sequence segment T _E4 The time length of at least two luminous sub time sequence sections in the luminous time sequence section is unequal by setting the time length of two sub sections in the fourth sub section to be unequal, so that the time intervals between the starting moments of two continuous enabling levels are not identical, the inherent periodicity of the luminous control signal is damaged, and the electromagnetic interference is reduced.

The third method comprises the following steps: third clock segment T _C3 And a fourth clock segment T _C4 Are all cut, i.e. there is a third clock segment T _C3 At least two third subsegments are included, and the duration of one third subsegment is different from that of another third subsegment; and the presence of a fourth clock segment T _C4 At least two fourth subsegments are included, and there is one fourth subsegment having a duration that is different from the duration of another fourth subsegment.

Thus, the light-emitting time sequence section T corresponding to at least part of the sub-pixels in the odd rows can be realized _E0 Is divided; at the same time, the light-emitting time sequence section T corresponding to at least part of even-numbered rows of sub-pixels can be realized _E0 Is divided.

Illustratively, referring to FIG. 24, the 1 st third clock segment T _C3 Comprising a third subsection T _C31 And a third subsection T _C32 1 st fourth clock segment T _C4 Comprising a fourth subsection T _C41 And a fourth subsegment T _C42 (ii) a By setting the length of time in which two sub-segments are present in the third sub-segment to be unequal, and in the fourth sub-segmentThe time lengths of the two subsections are different, so that the time lengths of at least two luminous subsequences in the luminous time sequence section are different, the time intervals between the starting moments of two continuous enabling levels are not completely the same, the inherent periodicity of the luminous control signal is damaged, and the electromagnetic interference is reduced.

In other embodiments, the third sub-segment and the fourth sub-segment may have different durations, so as to destroy the periodicity of the light emission control signal and reduce the electromagnetic interference generated by the display panel to electronic products disposed around the display panel.

In other embodiments, only a portion of the third clock segment T may be provided _C3 Is divided into third clock segments T _C3 Are all equal in duration, so that the third sub-section is equal to the third clock section T _C3 The duration of time is not equal; or only a part of the fourth clock segment T is provided _C4 Divided and a fourth clock segment T _C4 Are all equal in duration, so that the fourth sub-section is equal to the fourth clock section T _C4 The duration of time varies. Therefore, the time intervals between the starting moments of two continuous enabling levels in the light-emitting control signal are not completely the same, and the electromagnetic interference is reduced.

And S422, generating a light-emitting control signal by using the light-emitting driving circuit according to the third clock signal and the fourth clock signal.

Wherein the overall timing of the light emission control signal is kept consistent with the overall timing of the third clock signal and the fourth clock signal.

Illustratively, the clock signal includes a third clock segment T in sequence as time goes on _C3 A fourth clock segment T _C4 A third clock segment T _C3 A fourth clock segment T _C4 Third clock segment T _C3 And a fourth clock segment T _C4 (ii) a Correspondingly, the light-emitting control signal comprises the light-emitting time sequence T of the Gate1 signal in turn _G0 And a light emitting time sequence section T of a Gate2 signal _G0 And a light emitting time sequence section T of a Gate3 signal _G0 And a light emitting time sequence section T of a Gate4 signal _G0 And a light emitting time sequence section T of a Gate5 signal _G0 And a light emission time period T of a Gate6 signal _G0 。

S423, supplying a light emission control signal to the sub-pixel, and supplying a scan signal and a data signal to the sub-pixel.

Illustratively, in the data writing stage, a scan signal is supplied to the sub-pixels through the scan lines to allow data signal writing; writing data signals into the sub-pixels of the opened row through the data lines in the enabling level duration period of the gate opening signals of the sub-pixels of the current row so as to update the data signals; in the light-emitting stage, the light-emitting control signal is provided to the sub-pixel through the light-emitting control signal line so as to make the sub-pixel emit light in preparation for displaying the picture to be displayed.

And S430, displaying the image to be displayed according to the display signal.

In the above embodiment, the setting manner of the time length of each third sub-segment and each fourth sub-segment may be similar to the setting manner of the time length of the light-emitting sub-timing segment of the light-emitting control signal, which can be understood with reference to the above, and is not described herein again.

It should be noted that, in the embodiment of the present invention, only the enable level is a high level signal, and the disable level is a low level signal are taken as examples, and the timing sequence in the driving method provided in the embodiment of the present invention is exemplarily described. In other embodiments, the enable level may be set as a low level signal, and the disable level may be set as a high level signal according to actual requirements of the display panel and the driving method thereof, which is not limited in the embodiments of the present invention.

Based on the same inventive concept, embodiments of the present invention further provide a display driving apparatus, which can be used to perform the driving method provided in the above embodiments. Therefore, the display driving apparatus also has the beneficial effects of the driving method of the display panel provided by the above embodiment, and the same parts are not described in detail below, and can be understood by referring to the foregoing description.

For example, referring to fig. 25, the display driving apparatus 80 may include: an image obtaining module 810, configured to obtain an image to be displayed; a signal providing module 820, configured to provide a display signal to the sub-pixel by using a scan line and a data line according to an image to be displayed; and an image display module 830, configured to display an image to be displayed according to the display signal.

The display signal comprises a scanning signal and a data signal, the scanning signal comprises a plurality of scanning time sequence sections which are connected in series in sequence, and each scanning time sequence section correspondingly triggers one row of sub-pixels; the scanning time sequence section comprises at least two scanning sub time sequence sections, and the time length of one scanning sub time sequence section is different from the time length of the other scanning sub time sequence section in the scanning time sequence section comprising the scanning sub time sequence sections. Therefore, the periodicity of the scanning signals can be damaged by setting different time lengths of the scanning sub time sequence segments, so that the electromagnetic interference is favorably reduced, and the influence of the display panel applied to a vehicle-mounted display screen on other vehicle-mounted electronic products (such as a vehicle-mounted radio, a vehicle-mounted sound box or other vehicle-mounted display screens) is reduced.

For example, the image capturing module 810 may be an IC connected to a motherboard in a mobile phone, or an IC connected to a display card in a computer, or other configurations known to those skilled in the art, and the embodiment of the invention is not limited thereto.

For example, the signal providing module 820 may include a scan driving circuit, a multiplexing circuit, and other circuit structures known to those skilled in the art, which are not described or limited in the embodiments of the present invention.

Illustratively, the image display module 830 may be a display panel.

It should be noted that the modules may be integrated in an actual product structure, and the embodiment of the present invention is not limited thereto.

On the basis of the foregoing embodiments, an embodiment of the present invention further provides a display panel, which can be driven by applying any one of the driving methods of the display panel provided in the foregoing embodiments, so that the display panel also has the beneficial effects of the driving method provided in the foregoing embodiments, and the same parts are not described in detail below and can be understood by referring to the foregoing description.

For example, the display panel 90 may be a display panel in a mobile phone, a computer, a smart wearable device (e.g., a smart watch), an in-vehicle display screen, an in-vehicle touch screen, or other application scenarios known to those skilled in the art, which is not limited in the embodiments of the present invention. When the display panel is used as a carrier display in a vehicle such as an automobile, a ship, or an airplane, it may be a display independent of an inherent structure in the vehicle, as shown in fig. 26; the display panel 90 may also be a partial structure integrally disposed with other structural components in the vehicle, for example, the display panel may be integrally disposed with a front windshield, or may be integrally disposed with a table top around a periphery of an instrument panel, which is not limited in the embodiments of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The driving method of the display panel is characterized in that the display panel comprises scanning lines and data lines, the scanning lines and the data lines are crossed to define sub-pixel regions, and sub-pixels are arranged in the sub-pixel regions; the driving method includes:

acquiring an image to be displayed;

displaying the image to be displayed according to the display signal;

the display signal comprises a scanning signal and a data signal, the scanning signal comprises a plurality of scanning time sequence sections which are sequentially connected in a cascade mode, and each scanning time sequence section correspondingly triggers one row of the sub-pixels; the scanning time sequence section comprises at least two scanning sub time sequence sections, and the time length of one scanning sub time sequence section is different from the time length of the other scanning sub time sequence section in the scanning time sequence sections comprising the scanning sub time sequence sections;

the plurality of scan timing segments comprises a plurality of types of the scan timing segments; each scanning time sequence section of the same type comprises the scanning sub time sequence sections distributed in the same quantity and the same time length, and the quantity and/or the time length of the scanning sub time sequence sections in the scanning time sequence sections of different types are different.

2. The driving method as claimed in claim 1, wherein the duration of one of the scan sub-timing segments is different from the duration of another one of the scan sub-timing segments within the same scan timing segment.

3. The driving method as claimed in claim 2, wherein the duration of each scan sub-period is not equal in the same scan period.

4. The driving method as claimed in claim 1, wherein a duration of one of the scan sub-timing sections of one of the scan timing sections is different from a duration of one of the scan sub-timing sections of another one of the scan timing sections.

5. The driving method according to claim 1,

there are two adjacent scan timing segments that are set to different types of scan timing segments.

6. The driving method according to claim 5, wherein the different types of the scan timing segment intervals are set.

7. The driving method according to claim 1, wherein, of the scan timing sections including the scan sub timing sections, each of the scan timing sections includes a different number of the scan sub timing sections, or

In the scanning time sequence section comprising the scanning sub time sequence section, the time lengths of the scanning sub time sequence sections included in each scanning time sequence section are unequal; or

In the scanning time sequence segments including the scanning sub time sequence segments, the number of the scanning sub time sequence segments included in each scanning time sequence segment is different, and the duration of the scanning sub time sequence segments included in each scanning time sequence segment is different.

8. The driving method according to claim 1, wherein the display panel further comprises a scan driving circuit, a first clock signal line, and a second clock signal line, the scan driving circuit comprising a plurality of scan driving units, each of the scan driving units comprising a first clock input terminal, a second clock input terminal, and a scan signal output terminal; the first clock signal line is electrically connected to the first clock input terminal, the second clock signal line is electrically connected to the second clock input terminal, and the scan line is electrically connected to the scan signal output terminal; the providing the display signals to the sub-pixels by using the scan lines and the data lines according to the image to be displayed comprises:

according to the image to be displayed, a first clock signal and a second clock signal are respectively provided for the scanning driving circuit by utilizing the first clock signal line and the second clock signal line;

generating a scanning signal by using the scanning driving circuit according to the first clock signal and the second clock signal;

providing the scan signal to the sub-pixels and providing a data signal to the sub-pixels;

the first clock signal comprises a plurality of first clock segments which are connected in sequence, the second clock signal comprises a plurality of second clock segments which are connected in sequence, and the first clock segments and the second clock segments are arranged at intervals in sequence and correspond to the plurality of scanning clock segments which are connected in sequence; and

the existence of the first clock segment comprises at least two first subsegments, and the duration of the existence of one first subsegment is not equal to that of the other first subsegment; or

The existence of the second clock segment comprises at least two second subsegments, and the duration of the existence of one second subsegment is different from the duration of the other second subsegment; or

There are at least two first subsegments in the first clock segment, and there is at least two second subsegments in the second clock segment.

9. The driving method as claimed in claim 8, wherein the first sub-segments are not equal in duration or

The durations of the second sub-segments are not equal, or

The time lengths of the first subsegments are different, and the time lengths of the second subsegments are different.

10. The driving method according to claim 1, wherein the scanning sub-timing period includes an active signal period and an inactive signal period;

wherein the charging period of the data signals is within the duration of the active signal period, and each of the active signal periods covers at least one of the charging periods of the data signals.

11. The driving method according to claim 10, wherein a start timing of the valid signal period is earlier than a start writing timing of a charging period of the data signal corresponding thereto; or

The end time of the effective signal period is later than the end writing time of the charging period of the data signal corresponding to the effective signal period; or

The start time of the valid signal period is earlier than the start write time of the charge period of the data signal corresponding thereto, and the end time of the valid signal period is later than the end write time of the charge period of the data signal corresponding thereto.

12. The driving method according to claim 10, wherein the display panel further comprises a multiplexing circuit, a plurality of data source lines, and m data selection signal lines, wherein the multiplexing circuit comprises a plurality of multiplexing units, an input terminal of one multiplexing unit is disposed corresponding to and electrically connected to one data source line, the multiplexing unit has m output terminals and m control terminals, m output terminals of one multiplexing unit are disposed corresponding to and electrically connected to m data lines, respectively, and m data selection signal lines are disposed corresponding to and electrically connected to m control terminals of each multiplexing unit, respectively; the providing the display signals to the sub-pixels by using the scan lines and the data lines according to the image to be displayed comprises:

according to the image to be displayed, the data selection signal line provides a data selection control signal, and the signal of the data source line provides a data signal to the data line through the multi-path selection unit under the control of the corresponding data selection control signal;

the data lines provide the data signals to the subpixels, and the scan lines provide scan signals to the subpixels;

wherein the active periods of the data selection control signals are within the duration of the active signal periods, and each of the active signal periods covers at least one of the active periods of the data selection control signals.

13. The driving method as claimed in claim 12, wherein one of the scan timing sections includes mj scan sub-timing sections, and the effective signal period of the ith scan sub-timing section covers mi effective active periods of the data selection control signal;

wherein, the first and the second end of the pipe are connected with each other,

14. The driving method according to claim 1, wherein the display panel further comprises a light emission control signal line extending in the same direction as the scan line, the light emission control signal line being configured to supply a light emission control signal to a row of the subpixels;

the light-emitting control signal comprises a plurality of light-emitting time sequence sections which are sequentially connected in series, the light-emitting time sequence section comprises at least two light-emitting sub time sequence sections, and the time length of one light-emitting sub time sequence section is different from the time length of the other light-emitting sub time sequence section.

15. The driving method according to claim 14, wherein the display panel further comprises a light emission driving circuit, a third clock signal line, and a fourth clock signal line, the light emission driving circuit comprising a plurality of light emission driving units, each of the light emission driving units comprising a third clock input terminal, a fourth clock input terminal, and a light emission signal output terminal; the third clock signal line is electrically connected to the third clock input terminal, the fourth clock signal line is electrically connected to the fourth clock input terminal, and the light emission control signal line is electrically connected to the light emission signal output terminal; the providing the display signals to the sub-pixels by using the scan lines and the data lines according to the image to be displayed comprises:

according to the image to be displayed, respectively providing a third clock signal and a fourth clock signal to the light-emitting driving circuit by utilizing the third clock signal line and the fourth clock signal line;

generating a light emission control signal by using the light emission driving circuit according to the third clock signal and the fourth clock signal;

supplying the light emission control signal to the sub-pixels, and supplying a scan signal and a data signal to the sub-pixels;

the third clock signal comprises a plurality of third clock segments which are connected in sequence, the fourth clock signal comprises a plurality of fourth clock segments which are connected in sequence, and the third clock segments and the fourth clock segments are arranged at intervals in sequence and correspond to the plurality of light-emitting time sequence segments which are connected in sequence; and

the third clock section comprises at least two third subsegments, and the time length of one third subsegment is different from that of the other third subsegment; or

The existence of the fourth clock segment comprises at least two fourth subsegments, and the duration of the existence of one fourth subsegment is different from the duration of the other fourth subsegment; or

The third clock section comprises at least two third subsegments, and the time length of one third subsegment is different from that of the other third subsegment; and the fourth clock segment comprises at least two fourth subsegments, and the duration of one fourth subsegment is different from the duration of another fourth subsegment.

16. A display driving apparatus for performing the driving method according to any one of claims 1 to 15; the display driving device includes:

the image acquisition module is used for acquiring an image to be displayed;

17. A display panel driven by the driving method according to any one of claims 1 to 15.