CN110085173B - Driving method of display panel, driving chip and display device - Google Patents
Driving method of display panel, driving chip and display device Download PDFInfo
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- CN110085173B CN110085173B CN201910531299.6A CN201910531299A CN110085173B CN 110085173 B CN110085173 B CN 110085173B CN 201910531299 A CN201910531299 A CN 201910531299A CN 110085173 B CN110085173 B CN 110085173B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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Abstract
The embodiment of the invention provides a driving method of a display panel, a driving chip and a display device, relates to the technical field of display, and aims to improve the ghost phenomenon and improve the display performance. The driving method includes: monitoring static patterns displayed by the display panel in a first driving mode, and defining the region where the static patterns are located as a target region when the display brightness value of the region where the static patterns are located and the display brightness value of the region where the peripheral patterns are located meet preset conditions; the pixel circuits in the target region are driven in a second drive mode in which the gate lines scan the pixel circuits at a second frequency that is greater than a first frequency at which the gate lines scan the pixel circuits in the first drive mode, in which the pixel circuit drive cycle includes a signal switching period in which different data signals are written to the pixel circuits, an initialization period, a data signal writing period, and a light emission period.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a driving method of a display panel, a driving chip and a display device.
[ background of the invention ]
At present, Organic Light Emitting Display (OLED) Display panels are increasingly widely used due to their excellent characteristics of self-luminescence, high brightness, wide viewing angle, fast response, and the like.
In order to drive the OLED display panel to normally emit light, a plurality of pixel circuits are arranged in the display panel, each pixel circuit comprises a driving transistor and a plurality of switching transistors, the existing pixel circuit can solve the problem of uneven display caused by the drift of the threshold voltage of the driving transistor due to the process and the aging of the transistors through internal compensation, but when the display panel is used for switching high and low gray scale pictures, the display panel is influenced by the hysteresis effect of the driving transistor, so that the afterimage phenomenon can occur, and the display performance is influenced.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a driving method of a display panel, a driving chip and a display device, so as to effectively improve the image sticking phenomenon and improve the display performance.
In one aspect, an embodiment of the present invention provides a method for driving a display panel, including:
monitoring static patterns displayed by a display panel in a first driving mode, and defining the area where the static patterns are located as a target area when the display brightness value of the area where the static patterns are located and the display brightness value of the area where peripheral patterns are located meet preset conditions;
driving the pixel circuits in the target region in a second driving mode in which the gate lines scan the pixel circuits at a second frequency that is greater than a first frequency at which the gate lines scan the pixel circuits in the first driving mode, and in which a driving cycle of the pixel circuits includes a signal switching period in which different data signals are written to the pixel circuits, an initialization period, a data signal writing period, and an emission period.
Optionally, the display brightness value of the area where the static pattern is located is L1, the display brightness value of the area where the peripheral pattern is located is L2, and the preset condition is that L1/L2 is greater than or equal to 1000.
Optionally, the second frequency is f, and f is greater than or equal to 90 Hz.
Optionally, the duration of driving the pixel circuit in the target region in the second driving mode is N, and N is greater than or equal to 2s and less than or equal to 10 s.
Optionally, in the signal switching period, the scanning signal output by the gate line to the pixel circuit includes m rising edges, at least one of the rising edges, the data signal written by the data line to the pixel circuit is switched between high and low levels, and m is greater than or equal to 2.
Optionally, the data signal written by the data line is switched between high and low levels at each rising edge.
Optionally, the driving the pixel circuit in the target region in the second driving mode includes:
and driving the pixel circuits in the whole area of the display panel in the second driving mode.
In another aspect, an embodiment of the present invention provides a driving chip, including:
the positioning module is electrically connected with the display panel and used for monitoring the static pattern displayed by the display panel in a first driving mode, and when the display brightness value of the area where the static pattern is located and the display brightness value of the area where the peripheral pattern is located meet preset conditions, the area where the static pattern is located is defined as a target area;
the first control module is electrically connected with the display panel and the positioning module and is used for controlling a grid line to scan a pixel circuit in the target area at a second frequency after the target area is determined, wherein the second frequency is higher than a first frequency of the grid line scanning the pixel circuit in the first driving mode;
and the second control module is electrically connected with the display panel and the positioning module and is used for controlling the data lines to write different data signals into the pixel circuits in a signal switching period after the target area is determined.
Optionally, the driving chip includes a first sub-driving chip and a second sub-driving chip, and the first control module is located in the first sub-driving chip.
In another aspect, an embodiment of the present invention provides a display device, which includes a display panel and the driving chip.
One of the above technical solutions has the following beneficial effects:
by adopting the technical scheme provided by the invention, after the target area is determined, on one hand, the charging times of the partial pixel circuits can be increased by increasing the scanning frequency of the grid lines to the pixel circuits in the target area, so that the writing speed of data signals into the driving transistors in the pixel circuits is increased; on the other hand, by adding a signal switching period before the initialization period and writing different data signals into the pixel circuits in the target area in the period, the part of the driving transistors can be prevented from receiving the same bias voltage for a long time, and when the picture jumps, the part of the driving transistors can be quickly switched to the next bias voltage.
Therefore, by adopting the technical scheme, the scanning speed of the pixel circuit in the target area is increased, and different data signals are written into the pixel circuit in the target area in the signal switching period, so that the bias voltage received by the driving transistor in the target area can be prevented from being kept unchanged for a long time, the hysteresis effect of the driving transistor is reduced, the afterimage phenomenon generated when the high-low gray scale picture is switched in the target area is effectively improved, and the display performance is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a driving method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a prior art pixel circuit;
FIG. 3 is a signal timing diagram corresponding to a driving period according to an embodiment of the present invention;
FIG. 4 is another signal timing diagram corresponding to a driving period provided by the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a driving chip according to an embodiment of the present invention;
fig. 6 is another schematic structural diagram of a driving chip according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first and second may be used to describe the control modules in the embodiments of the present invention, the control modules should not be limited to these terms. These terms are only used to distinguish the control modules from each other. For example, a first control module may also be referred to as a second control module, and similarly, a second control module may also be referred to as a first control module without departing from the scope of embodiments of the present invention.
An embodiment of the present invention provides a driving method of a display panel, as shown in fig. 1, where fig. 1 is a flowchart of the driving method provided in the embodiment of the present invention, and the driving method includes:
step S1: and monitoring the static pattern displayed by the display panel in the first driving mode, and defining the region where the static pattern is located as a target region when the display brightness value of the region where the static pattern is located and the display brightness value of the region where the peripheral pattern is located meet a preset condition.
The first driving mode is a driving mode applied to the display panel during normal display. When the display panel displays a picture in the first driving mode, the static pattern in the target area is a pattern with higher brightness than the peripheral pattern, such as clock information and date information displayed on a mobile phone screen.
Step S2: the pixel circuits in the target region are driven in a second drive mode in which the gate lines scan the pixel circuits at a second frequency that is greater than a first frequency at which the gate lines scan the pixel circuits in the first drive mode, and in which a drive cycle of the pixel circuits includes a signal switching period in which different data signals are written to the pixel circuits, an initialization period, a data signal writing period, and an emission period.
For the static pattern with higher display brightness in the target area, after the picture is skipped, the residual of the static pattern before the picture is skipped easily occurs in the target area, i.e. the ghost phenomenon occurs. After the target area is determined, on one hand, by increasing the scanning frequency of the grid lines to the pixel circuits in the target area, the charging times of the partial pixel circuits can be increased, so that the writing rate of data signals into the driving transistors in the pixel circuits is increased; on the other hand, by adding a signal switching period before the initialization period and writing different data signals into the pixel circuits in the target area in the period, the part of the driving transistors can be prevented from receiving the same bias voltage for a long time, and when the picture jumps, the part of the driving transistors can be quickly switched to the next bias voltage.
Therefore, by adopting the driving method, the scanning speed of the pixel circuit in the target area is increased, and different data signals are written into the pixel circuit in the target area in the signal switching period, so that the bias voltage received by the driving transistor in the target area can be prevented from being kept unchanged for a long time, the hysteresis effect of the driving transistor is reduced, the afterimage phenomenon generated when the high-low gray scale picture is switched in the target area is effectively improved, and the display performance is improved.
In addition, it should be noted that, based on the operating principle of the pixel circuit, the normal light emission of the display panel can be ensured only by writing the data signal required for display into the pixel circuit in the data signal writing period, and therefore, the adjustment of the written data signal in the signal switching period does not affect the normal light emission.
Optionally, the display brightness value of the area where the static pattern is located is L1, the display brightness value of the area where the peripheral pattern is located is L2, and the preset condition is that L1/L2 is greater than or equal to 1000.
It is understood that in a display screen, the display brightness values of different areas are different, that is, the display brightness of one area is usually greater than that of the other area for two adjacent areas. By limiting the ratio of L1 to L2 by using the preset conditions, the region where the static pattern is located can be identified as the target region only when L1/L2 is greater than or equal to 1000, the target region can be accurately limited, and the identification error can be avoided.
For the current display panel, when the display panel is displaying normally, that is, in the first driving mode, the scanning frequency is usually 30Hz or 60Hz, in the embodiment of the present invention, in order to ensure that the scanning frequency of the gate line to the pixel circuit in the target region is effectively increased, and further the image sticking phenomenon in this portion of the region is effectively reduced, the second frequency f may be satisfied: f is more than or equal to 90 Hz.
Optionally, to further improve the image sticking phenomenon in the target region, the duration of driving the pixel circuit in the target region in the second driving mode is N, so that N satisfies: n is more than or equal to 2s and less than or equal to 10 s. Setting N between 2s and 10s ensures that the target region is displayed for a sufficient time period under the driving of the second driving mode, thereby effectively improving the hysteresis effect of the part of the driving transistors.
Optionally, in the signal switching period, the scanning signal output by the gate line to the pixel circuit includes m rising edges, at least one of the rising edges, the data signal written by the data line to the pixel circuit is switched between high and low levels, and m is greater than or equal to 2.
Taking an example that the gate line outputs a scan signal to the pixel circuit within the signal switching period includes 2 rising edges, as shown in fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of the pixel circuit in the prior art, fig. 3 is a signal timing diagram corresponding to the driving period provided by the embodiment of the invention, and the driving period includes a signal switching period T1, an initialization period T2, a data signal writing period T3, and an emission period T4.
In the signal switching period T1, when the 1 st rising edge occurs in the signal output from the gate line Scan1 (the gate line corresponding to the row where the pixel circuit is located), the Scan signal output from the gate line Scan2 (the gate line corresponding to the next row where the pixel circuit is located) is at an active low level, the switching transistor T2 is turned on under the action of the low level, the data signal provided by the data line is switched from the low level to the high level, the data signal at the high level is transmitted to the driving transistor T3 through the turned-on switching transistor T2, and at this time, the bias voltage received by the driving transistor T3 is converted from the positive bias voltage PBS to the negative bias voltage NBS.
When the 2 nd rising edge of the signal output by the gate line Scan1 occurs, the Scan signal output by the gate line Scan2 is at an active low level, the data signal provided by the data line is switched from a high level to a low level, the low level data signal is transmitted to the driving transistor T3 through the turned-on switching transistor T2, and at this time, the bias voltage received by the driving transistor T3 is converted from the negative bias voltage NBS to the positive bias voltage PBS.
It should be noted that in the initialization period T2, the data signal writing period T3 and the light emitting period T4, the operation principle of the pixel circuit is the same as that of the prior art, and the description thereof is omitted here.
In addition, m frame start signals may be added to a shift register for controlling the gate lines to sequentially output the scan signals, in order to realize that the gate lines output m rising edges in the signal switching period.
Further, in order to switch the data signal written into the driving transistor at a higher rate and reduce the time length for receiving the same signal, in the signal switching period, the data signal written into the data line may be switched between high and low levels at each rising edge. Taking fig. 4 as an example, fig. 4 is another signal timing diagram corresponding to the driving period provided by the embodiment of the invention, at the 1 st rising edge of the Scan1 signal, the data signal written by the data line changes from low level to high level, at the 2 nd rising edge of the Scan1 signal, the data signal written by the data line changes from high level to low level, at the 3 rd rising edge of the Scan1 signal, the data signal written by the data line changes from low level to high level, and at the 4 th rising edge of the Scan1 signal, the data signal written by the data line changes from high level to low level.
Optionally, driving the pixel circuit in the target region in the second driving mode includes: and driving the pixel circuits in the whole area of the display panel in a second driving mode.
After the target area is determined, the pixel circuits in all the areas of the display panel are driven in the second driving mode, the scanning frequency of all the pixel circuits and the written data signals are adjusted, the driving difficulty is reduced on the premise of improving the ghost phenomenon in the target area, and the practicability is improved.
Fig. 5 shows a schematic structural diagram of a driving chip 200, where the driving chip 200 includes a positioning module 1, a first control module 2, and a second control module 3.
The positioning module 1 is electrically connected to the display panel 100, and configured to monitor a static pattern displayed by the display panel 100 in a first driving mode, and when a display brightness value of a region where the static pattern is located and a display brightness value of a region where a peripheral pattern is located satisfy a preset condition, define the region where the static pattern is located as a target region.
The first control module 2 is electrically connected to the display panel 100 and the positioning module 1, and configured to control the gate lines to scan the pixel circuits in the target region at a second frequency after the target region is determined, where the second frequency is greater than a first frequency at which the gate lines scan the pixel circuits in the first driving mode.
The second control module 3 is electrically connected to the display panel 100 and the positioning module 1, and is configured to control the data lines to write different data signals to the pixel circuits in the signal switching period after the target area is determined.
By adopting the driving chip 200 provided by the embodiment of the invention, after the positioning module 1 positions the target area, on one hand, the first control module 2 is used for controlling and increasing the scanning frequency of the grid line to the pixel circuit in the target area, so that the charging times of the part of the pixel circuit can be increased, and the speed of writing the data signal into the driving transistor in the pixel circuit is increased; on the other hand, the second control module 3 is utilized to control the data line to write different data signals into the pixel circuit in the target area in the signal switching period, so that the situation that the part of the driving transistors receive the same bias voltage for a long time can be avoided, when the picture jumps, the part of the driving transistors can be quickly switched to the next bias voltage, the hysteresis effect of the driving transistors is effectively reduced, the afterimage phenomenon generated when the high-low gray-scale picture is switched in the target area is improved, and the display performance is improved.
Optionally, as shown in fig. 6, fig. 6 is another schematic structural diagram of the driving chip provided in the embodiment of the present invention, the driving chip 200 includes a first sub-driving chip 2001 and a second sub-driving chip 2002, and the first control module 2 is located in the first sub-driving chip 2001. By controlling the scanning frequency within the target region using the single first sub-driver chip 2001, the reliability of improving the scanning frequency within the target region can be increased.
Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device includes a display panel 100 and the driving chip 200. The specific structure of the driving chip 200 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 7 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
Since the display device provided by the embodiment of the invention includes the driving chip 200, the display device can increase the switching rate of the bias voltage of the driving transistor in the target area of the display panel 100, reduce the hysteresis effect of the driving transistor, effectively improve the afterimage phenomenon generated when the high-low gray scale image of the target area is switched, and improve the display performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method of driving a display panel, comprising:
monitoring static patterns displayed by a display panel in a first driving mode, and defining the area where the static patterns are located as a target area when the display brightness value of the area where the static patterns are located and the display brightness value of the area where peripheral patterns are located meet preset conditions;
driving the pixel circuits in the target region in a second drive mode in which the gate lines scan the pixel circuits at a second frequency that is greater than a first frequency at which the gate lines scan the pixel circuits in the first drive mode, and in which a drive cycle of the pixel circuits includes a signal switching period in which different data signals are written to the pixel circuits, an initialization period, a data signal writing period, and an emission period;
in the signal switching period, the scanning signal output to the pixel circuit by the grid line comprises m rising edges, at least one rising edge, the data signal written into the pixel circuit by the data line is switched between high and low levels, and m is larger than or equal to 2.
2. The driving method as claimed in claim 1, wherein the display luminance value of the region where the static pattern is located is L1, the display luminance value of the region where the peripheral pattern is located is L2, and the predetermined condition is that L1/L2 is greater than or equal to 1000.
3. The driving method according to claim 1, wherein the second frequency is f ≧ 90 Hz.
4. The driving method according to claim 1, wherein the pixel circuits in the target region are driven in the second driving mode for a period of time N, 2s ≦ N ≦ 10 s.
5. The driving method according to claim 1, wherein the data signal written by the data line is switched high and low at each rising edge.
6. The driving method according to claim 1, wherein the driving of the pixel circuits in the target region in the second driving mode includes:
and driving the pixel circuits in the whole area of the display panel in the second driving mode.
7. A driver chip, comprising:
the positioning module is electrically connected with the display panel and used for monitoring the static pattern displayed by the display panel in a first driving mode, and when the display brightness value of the area where the static pattern is located and the display brightness value of the area where the peripheral pattern is located meet preset conditions, the area where the static pattern is located is defined as a target area;
the first control module is electrically connected with the display panel and the positioning module and is used for controlling a grid line to scan a pixel circuit in the target area at a second frequency after the target area is determined, wherein the second frequency is higher than a first frequency of the grid line scanning the pixel circuit in the first driving mode;
the second control module is electrically connected with the display panel and the positioning module and is used for controlling the data line to write different data signals into the pixel circuit in a signal switching period after the target area is determined;
in the signal switching period, the scanning signal output to the pixel circuit by the grid line comprises m rising edges, at least one rising edge, the data signal written into the pixel circuit by the data line is switched between high and low levels, and m is larger than or equal to 2.
8. The driver chip according to claim 7, wherein the driver chip comprises a first sub driver chip and a second sub driver chip, and the first control module is located in the first sub driver chip.
9. A display device comprising a display panel and the driver chip according to claim 7 or 8.
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| CN111028781B (en) * | 2019-12-26 | 2021-04-30 | 厦门天马微电子有限公司 | Driving method and driving device of display panel and display equipment |
| CN112885277B (en) * | 2021-01-14 | 2022-04-05 | 合肥维信诺科技有限公司 | Display method of display panel, display module and display device |
| WO2024031319A1 (en) * | 2022-08-09 | 2024-02-15 | 京东方科技集团股份有限公司 | Pixel driving method, pixel driving circuit, and display device |
| CN115578971B (en) * | 2022-10-31 | 2023-09-19 | 惠科股份有限公司 | Display device and display driving method thereof |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232795A (en) * | 2006-02-27 | 2007-09-13 | Hitachi Displays Ltd | Organic el display device |
| US8629814B2 (en) * | 2006-09-14 | 2014-01-14 | Quickbiz Holdings Limited | Controlling complementary bistable and refresh-based displays |
| TWI336874B (en) * | 2007-03-12 | 2011-02-01 | Au Optronics Corp | Drive circuit, display apparatus, and method for adjusting screen refresh rate |
| CN100543821C (en) * | 2007-04-04 | 2009-09-23 | 友达光电股份有限公司 | Driving circuit, display device reach in order to adjust the method for picture update rate |
| WO2011070902A1 (en) * | 2009-12-10 | 2011-06-16 | Semiconductor Energy Laboratory Co., Ltd. | Display device and driving method thereof |
| CN104934010B (en) * | 2015-07-13 | 2018-04-06 | 京东方科技集团股份有限公司 | Driving method, gate driving circuit and the display device of display panel |
| CN106023887B (en) * | 2016-06-16 | 2018-07-10 | 深圳市华星光电技术有限公司 | Reduce the device and method of OLED display panel ghost |
| KR102370442B1 (en) * | 2017-08-17 | 2022-03-03 | 엘지전자 주식회사 | Image display apparatus |
| CN109064966B (en) * | 2018-10-31 | 2021-08-27 | 武汉天马微电子有限公司 | Driving method and driving chip of display panel and display device |
| CN109272935B (en) * | 2018-11-23 | 2021-04-02 | 上海天马有机发光显示技术有限公司 | Driving method of display panel, driving chip and display device |
| CN109584806B (en) * | 2019-02-01 | 2020-08-28 | 武汉天马微电子有限公司 | Display panel, driving method thereof and display device |
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Effective date of registration: 20211025 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICROELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 201201 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |