CN116895240A

CN116895240A - Driving module and driving method of display panel and display device

Info

Publication number: CN116895240A
Application number: CN202310953369.3A
Authority: CN
Inventors: 常小幻; 侯帅; 吴国强; 左立天
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2023-10-17

Abstract

The disclosure provides a driving module, a driving method and a display device of a display panel, and belongs to the technical field of display. The driving method comprises the following steps: determining voltage variation parameters of each driving partition; the driving partition comprises a plurality of adjacent sub-pixels; the voltage variation parameter of the driving partition is the maximum value of the driving voltage variation corresponding to each sub-pixel in the driving partition; the driving voltage variation corresponding to the sub-pixel is the absolute value of the difference between the driving voltage of the sub-pixel and the driving voltage of the sub-pixel of the previous row adjacent to the column; determining the driving force of each driving partition according to the voltage variation parameters of each driving partition; and driving each sub-pixel of the driving partition according to the driving force of the driving partition. The driving method can reduce driving power consumption.

Description

Driving module and driving method of display panel and display device

Technical Field

The disclosure relates to the technical field of display, and in particular relates to a driving module and a driving method of a display panel and a display device.

Background

When the display panel displays a picture, for example, when the OLED display panel displays a picture, the driving voltage on the data trace needs to be changed along with the gray scale of the driven sub-pixel. Therefore, the source driving circuit for applying the driving voltage to the data line needs to perform voltage inversion according to the driving voltage to be applied, and further has power consumption. For normal display of the picture, it is also necessary to ensure that the driving voltage on the data line reaches the required voltage value quickly, that is, the rise Time (Time rising) and fall Time (Time falling) when the voltage is required to be flipped are short, which makes the source driving circuit need to have a larger driving force, and thus causes larger power consumption.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure aims to overcome the defects of the prior art, and provide a driving module and a driving method of a display panel, a display device, and a driving power consumption reduction.

According to one aspect of the present disclosure, there is provided a driving method of a display panel, including:

Determining voltage variation parameters of each driving partition; the driving partition comprises a plurality of adjacent sub-pixels; the voltage variation parameter of the driving partition is the maximum value of the driving voltage variation corresponding to each sub-pixel in the driving partition; the driving voltage variation corresponding to the sub-pixel is the absolute value of the difference between the driving voltage of the sub-pixel and the driving voltage of the sub-pixel of the previous row adjacent to the column;

determining the driving force of each driving partition according to the voltage variation parameters of each driving partition;

according to one embodiment of the present disclosure, determining a voltage variation parameter of one of the drive zones includes:

determining gray scale variation of a sub-pixel group corresponding to each sub-pixel of the driving partition; the sub-pixel group comprises a first sub-pixel and a second sub-pixel which are adjacent to each other in the same column, and the second sub-pixel is positioned on the last sub-pixel row of the first sub-pixel; the gray level variation of the sub-pixel group is the absolute value of the difference value between the gray level of the first sub-pixel and the gray level of the second sub-pixel; the sub-pixel group corresponding to the sub-pixel is a sub-pixel group taking the sub-pixel as a first sub-pixel;

Determining reference sub-pixel groups of each type in sub-pixel groups corresponding to the sub-pixels of the driving partition; in the same type of the sub-pixel groups, the color combinations of the sub-pixels of each sub-pixel group are the same; the gray scale variation of the reference sub-pixel group of the same sub-pixel group is larger than that of other sub-pixel groups of the same sub-pixel group;

determining the driving voltage variation of each reference sub-pixel group;

and taking the maximum value of the driving voltage variation of each reference sub-pixel group as the voltage variation parameter of the driving partition.

According to one embodiment of the present disclosure, determining the driving voltage variation amount of one of the reference subpixel groups includes:

determining a driving voltage of a first sub-pixel and a driving voltage of a second sub-pixel of the reference sub-pixel group according to the gray scale of the first sub-pixel, the gray scale of the second sub-pixel, the gamma correction curve and the brightness-scale factor curve;

and acquiring an absolute value of a difference value between the driving voltage of the first sub-pixel and the driving voltage of the second sub-pixel as a driving voltage variation of the reference sub-pixel group.

According to one embodiment of the present disclosure, determining the drive voltage of the first subpixel includes:

Determining a theoretical driving voltage of the first sub-pixel according to the gray scale of the first sub-pixel and a gamma correction curve corresponding to the first sub-pixel;

determining the driving voltage of the first sub-pixel according to the theoretical driving voltage of the first sub-pixel, the set picture brightness and the brightness-scale factor curve;

determining the drive voltage of the second sub-pixel comprises:

determining a theoretical driving voltage of the second sub-pixel according to the gray scale of the second sub-pixel and a gamma correction curve corresponding to the second sub-pixel;

and determining the driving voltage of the second sub-pixel according to the theoretical driving voltage of the second sub-pixel, the set picture brightness and the brightness-scale factor curve.

According to one embodiment of the disclosure, the determining the driving voltage of the first sub-pixel according to the theoretical driving voltage of the first sub-pixel, the set picture brightness and the brightness-scale factor curve includes:

determining a scale factor of the first sub-pixel according to the set picture brightness and the brightness-scale factor curve;

obtaining the product of the theoretical driving voltage of the first sub-pixel and the scaling factor as the driving voltage of the first sub-pixel;

The determining the driving voltage of the second sub-pixel according to the theoretical driving voltage of the second sub-pixel, the set picture brightness and the brightness-scale factor curve comprises:

determining a scale factor of the second sub-pixel according to the set picture brightness and the brightness-scale factor curve;

and obtaining the product of the theoretical driving voltage of the second sub-pixel and the scaling factor as the driving voltage of the second sub-pixel.

According to one embodiment of the present disclosure, the driving partition includes sub-pixels of one frame of picture.

According to one embodiment of the present disclosure, a frame of picture is divided into a plurality of different slices, each of which is capable of being encoded and decoded independently of the others;

the number of the driving partitions is multiple and corresponds to the multiple fragments one by one.

According to one embodiment of the present disclosure, any one of the driving sections includes one sub-pixel row or a plurality of sub-pixel rows.

According to one embodiment of the present disclosure, determining the driving force of the driving partition according to the voltage variation parameter of one of the driving partitions includes:

determining a voltage variation range of the voltage variation parameter of the driving partition according to the voltage variation parameter of the driving partition;

And determining the driving force of the driving partition according to the voltage variation range and the driving force-voltage variation range table.

and determining the driving force corresponding to the voltage variation parameter of the driving partition by adopting a linear interpolation algorithm according to the voltage variation parameter of the driving partition and the driving force-voltage variation parameter table.

According to another aspect of the present disclosure, there is provided a driving module of a display panel, including:

a voltage variation parameter determination circuit configured to determine a voltage variation parameter of each drive section; the driving partition comprises a plurality of adjacent sub-pixels; the voltage variation parameter of the driving partition is the maximum value of the driving voltage variation corresponding to each sub-pixel in the driving partition; the driving voltage variation corresponding to the sub-pixel is the absolute value of the difference between the driving voltage of the sub-pixel and the driving voltage of the sub-pixel of the previous row adjacent to the column;

a driving force determination circuit configured to determine driving forces of the respective driving partitions based on voltage variation parameters of the respective driving partitions;

And a source driving circuit configured to drive each of the sub-pixels of the driving section according to a driving force of the driving section.

According to still another aspect of the present disclosure, there is provided a display device including the driving module and a display panel as described above, wherein the driving module is electrically connected to the display panel.

According to one embodiment of the present disclosure, the display panel is an OLED display panel, a QLED display panel, a Micro LED display panel, or a Mini LED display panel.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

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

Fig. 2 is a schematic view showing a partial cross-sectional structure of a display panel according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.

Fig. 4 is a flow chart illustrating a driving method of a display panel according to an embodiment of the disclosure.

Fig. 5 is a schematic diagram of a driving module according to an embodiment of the disclosure.

FIG. 6 is a schematic diagram of a luminance versus scale factor curve according to one embodiment of the present disclosure.

Fig. 7 is a schematic diagram of an arrangement structure of each sub-pixel in an embodiment of the present disclosure.

Fig. 8 is a schematic diagram of an arrangement structure of each sub-pixel in an embodiment of the present disclosure.

Fig. 9 is a schematic diagram of a driving force-voltage variation parameter range table in an embodiment of the present disclosure.

Fig. 10 is a schematic diagram of a driving force-voltage variation parameter table in one embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

The terms "a," "an," "the," "said" and "at least one" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and do not limit the number of their objects.

The embodiment of the disclosure provides a driving method of a display panel PNL, so as to dynamically adjust the driving force of a source driving circuit, avoid overhigh power consumption caused by overhigh driving force of the source driving circuit, and reduce the power consumption of the source driving circuit and a driving module.

Referring to fig. 1, the display panel PNL includes a display area AA and a peripheral area BB located at least one side of the display area AA. In the display area AA, the display panel PNL is provided with display units DU of an array distribution, the display units DU including sub-pixels PIX and pixel driving circuits PDC driving the sub-pixels PIX. The display panel PNL does not set a display unit DU in the peripheral area BB or the set display unit DU is not used for displaying a picture. Referring to fig. 1, the display panel PNL is provided with a plurality of scan lines GL extending in a row direction DH in the display area AA, and each scan line GL is disposed in one-to-one correspondence with each display unit row. The pixel driving circuits PDC of the display units DU of the display unit row are electrically connected to the corresponding scanning lines GL. The display panel PNL is further provided with a plurality of data traces DL extending along the column direction DV in the display area AA, where each data trace DL is disposed in one-to-one correspondence with each display unit column. The pixel driving circuits PDC of the display units DU of the display unit columns are electrically connected to the corresponding data traces DL. In this way, the pixel driving circuit PDC of each display unit DU is connected to one scan line GL and one data line DL. When the scanning line GL is loaded with a scanning signal, the driving voltage loaded on the data line DL may be written into the pixel driving circuit PDC, so that the pixel driving circuit PDC may control the brightness of the sub-pixel PIX according to the written driving voltage. Specifically, the pixel driving circuit PDC may control the magnitude of the driving current when driving the subpixel PIX according to the magnitude of the written driving voltage, and further control the luminance of the subpixel PIX.

Alternatively, the pixel driving circuit PDC includes at least a data writing transistor, a driving transistor, and a storage capacitor, and a gate of the driving transistor may be electrically connected to one electrode plate of the storage capacitor. The source of the data writing transistor may be electrically connected to the data line DL, and the gate of the data writing transistor may be electrically connected to the scan line GL. The pixel driving circuit PDC is configured such that when a scan signal is applied to the scan line GL, the data writing transistor is turned on, and thus the driving voltage on the data line DL is written to the gate electrode and the storage capacitor of the driving transistor. The driving voltage may be maintained by the storage capacitor when the data writing transistor is turned off. The driving transistor is capable of outputting a driving current to drive the subpixel PIX to emit light under control of a voltage on its gate. It will be appreciated that the pixel driving circuit PDC of the embodiments of the present disclosure may further include other transistors or capacitors, so that the pixel driving circuit PDC has better driving performance. For example, the pixel driving circuit PDC may be a 7T1C (7 thin film transistors and one storage capacitor), an 8T1C (8 thin film transistors and one storage capacitor), or other architecture pixel driving circuit.

Alternatively, the sub-pixel PIX may be a current-driven self-light emitting element, and may be any one of a OLED, PLED, QLED light emitting element, a Micro LED, a Mini LED, and the like, for example. In this embodiment, the sub-pixels PIX may include a plurality of different colors of sub-pixels PIX, including, for example, a red sub-pixel for emitting red light, a blue sub-pixel for emitting green light, and a green sub-pixel for emitting green light. It will be appreciated that in other embodiments of the present disclosure, the subpixels PIX in the display area AA may also have other colors of subpixels PIX (e.g., yellow subpixels for yellow light emission, cyan subpixels for cyan light emission, white subpixels for white light emission, etc.).

In one embodiment of the present disclosure, referring to fig. 2, the display panel PNL may include a substrate SBT, a driving layer DRL, and a pixel layer PIXL, which are sequentially stacked. The pixel layer PIXL is provided with a sub-pixel PIX, and the driving layer DRL is provided with a pixel driving circuit PDC for driving the sub-pixel PIX; each of the sub-pixels PIX can emit light to display a picture under the driving of the pixel driving circuit PDC. Further, the display panel PNL further includes a thin film encapsulation layer TFE located on a side of the pixel layer PIXL away from the driving layer DRL, where the thin film encapsulation layer TFE can encapsulate and protect the pixel layer PIXL.

Alternatively, the substrate SBT may be a substrate of an inorganic material or a substrate of an organic material; of course, a composite substrate in which a base substrate of an inorganic material and a base substrate of an organic material are laminated may be used. For example, in some embodiments of the present disclosure, the material of the substrate base plate SBT may be a glass material such as soda lime glass, quartz glass, sapphire glass, or the like. In further embodiments of the present disclosure, the material of the substrate base SBT may be polymethyl methacrylate, polyvinyl alcohol, polyvinyl phenol, polyethersulfone, polyimide, polyamide, polyacetal, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, or a combination thereof. In other embodiments of the present disclosure, the substrate SBT may also be a flexible substrate, for example the material of the substrate SBT may comprise polyimide.

Optionally, in the driving layer DRL, any one of the pixel driving circuits PDC may include a thin film transistor TFT and a storage capacitor. Further, the thin film transistor TFT may be selected from a top gate thin film transistor, a bottom gate thin film transistor, or a double gate thin film transistor; the material of the active layer of the thin film transistor may be an amorphous silicon semiconductor material, a low-temperature polysilicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material, a carbon nanotube semiconductor material or other types of semiconductor materials; the thin film transistor may be an N-type thin film transistor or a P-type thin film transistor.

It will be appreciated that the type between any two transistors in the individual transistors in the pixel drive circuit may be the same or different. Illustratively, in some embodiments, in one pixel driving circuit, a portion of the transistors may be N-type transistors and a portion of the transistors may be P-type transistors. Still further exemplary, in other embodiments, in one pixel driving circuit, the material of the active layer of the partial transistor may be a low temperature polysilicon semiconductor material, and the material of the active layer of the partial transistor may be a metal oxide semiconductor material. In some embodiments of the present disclosure, the thin film transistor is a low temperature polysilicon transistor. In other embodiments of the present disclosure, a portion of the thin film transistors are low temperature polysilicon transistors and a portion of the thin film transistors are metal oxide transistors.

Alternatively, the driving layer DRL may include a semiconductor layer SCL, a gate insulating layer GI, a gate layer GT, an interlayer dielectric layer ILD, a source drain metal layer SD, a planarization layer PLN, and the like stacked between the substrate SBT and the pixel layer PIXL. Each of the thin film transistors and the storage capacitor may be formed of a film layer such as a semiconductor layer SCL, a gate insulating layer GI, a gate layer GT, an interlayer dielectric layer ILD, a source drain metal layer SD, or the like. The positional relationship of each film layer can be determined according to the film layer structure of the thin film transistor. Further, the semiconductor layer SCL may be used to form a channel region of a transistor, and may also form part of a track or a conductive structure by conducting if necessary. The gate layer may be used to form one or more of scan lines, reset control lines, light emission control lines, etc., may be used to form a gate of a transistor, and may be used to form part or all of the electrode plates of the storage capacitor. The source-drain metal layer can be used for forming source-drain metal layer wires such as data wires, power supply voltage wires and the like, and can also be used for forming part of electrode plates of the storage capacitor. Of course, in other embodiments of the present disclosure, the driving layer DRL may further include other film layers as needed, for example, a light shielding layer between the semiconductor layer SCL and the substrate SBT, and the like. Any one of the film layers such as the semiconductor layer SCL, the gate layer GT, the source drain metal layer SD may be a plurality of layers, for example, the driving layer DRL may include two different semiconductor layers SCL, or include two or three source drain metal layers SD, or include two or three gate layers GT; accordingly, the insulating film layer (e.g., gate insulating layer GI, interlayer dielectric layer ILD, planarizing layer PLN, etc.) in the driving layer DRL may be increased or decreased adaptively, or a new insulating film layer may be added as needed.

Optionally, the driving layer DRL may further include a passivation layer, where the passivation layer may be disposed on a surface of the source drain metal layer SD away from the substrate SBT, so as to protect the source drain metal layer SD.

As an example, referring to fig. 4, the driving layer DRL may include an inorganic buffer layer BUF, a semiconductor layer SCL, a gate insulating layer GI, a gate layer GT, an interlayer dielectric layer ILD, a source drain metal layer SD, and a planarization layer PLN, which are sequentially stacked, and thus the thin film transistor formed is a top gate thin film transistor.

In one embodiment of the present disclosure, referring to fig. 2, the sub-pixel PIX in the pixel layer PIXL is a thin film type light emitting element LD, which may include two electrodes disposed in a stacked manner and a light emitting functional unit interposed between the two electrodes. For example, referring to fig. 2, the pixel layer PIXL may include a pixel electrode layer PEL, a light emitting function layer EFL, and a common electrode layer COML, which are sequentially stacked. The pixel electrode layer PEL is provided with a plurality of pixel electrodes in a display area of the display panel; the portion of the light emitting functional layer EFL connected to the pixel electrode serves as a light emitting functional unit of the sub-pixel PIX, and the common electrode layer COML serves as a common electrode electrically connected to the light emitting functional unit of each sub-pixel PIX.

Further, the pixel layer PIXL may further include a pixel defining layer PDL between the pixel electrode layer PEL and the light emitting function layer EFL. The pixel defining layer PDL has a plurality of through pixel openings provided in one-to-one correspondence with the plurality of pixel electrodes, and any one of the pixel openings exposes at least a partial region of the corresponding pixel electrode. For example, the pixel defining layer PDL covers the edge of the pixel electrode and exposes at least part of the inner area of the pixel electrode, so that the pixel defining layer PDL can effectively define the actual effective area (area directly connected to the light emitting functional unit) of the pixel electrode, thereby defining the light emitting area and the light emitting area of the sub-pixel PIX. The light emitting function layer EFL covers at least the pixel electrode exposed by the pixel defining layer PDL. The common electrode layer COML may cover the light emitting function layer EFL in the display region. The pixel electrode and the common electrode layer COML supply carriers such as electrons, holes, and the like to the light emitting function layer EFL to cause the light emitting function layer EFL to emit light. The portion of the light emitting function layer EFL between the pixel electrode and the common electrode layer COML may serve as a light emitting function unit. The pixel electrode, the common electrode layer COML, and the light emitting functional unit form a subpixel PIX. One of the pixel electrode and the common electrode layer COML serves as an anode of the sub-pixel PIX, and the other serves as a cathode of the sub-pixel PIX.

In one example, the pixel electrode serves as an anode of the sub-pixel PIX, and the common electrode layer COML serves as a cathode of the sub-pixel PIX.

It is understood that the types of the light emitting elements LD are different, and the materials and film layers of the light emitting functional units are different.

For example, when the light emitting element is an OLED, the light emitting functional unit may include an organic light emitting layer, and may include one or more of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Further, the organic light emitting layer may include a light emitting layer host material and a light emitting layer guest material, which may be a fluorescent dopant or a phosphorescent dopant, and in particular, may be a thermally activated delayed fluorescent material. When the OLED adopts a stacked structure, a charge generation layer may be further provided in the light emitting functional layer EFL.

For another example, when the light emitting element is a QLED, the light emitting functional unit may include a quantum dot layer, and may include one or more of a hole injection layer, an electron transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Further, the quantum dot layer may have quantum dot particles, and the quantum dot particles may be connected to each other through a surface modification group. When the QLED adopts a stacked structure, a charge generation layer may be further provided in the light emitting functional unit.

Referring to fig. 2, the thin film encapsulation layer TFE may be provided on a surface of the pixel layer PIXL remote from the substrate base plate SBT, which may include an inorganic encapsulation layer and an organic encapsulation layer alternately stacked. The inorganic packaging layer can effectively block external moisture and oxygen, and avoids aging of materials in the pixel layer PIXL caused by invasion of the moisture and the oxygen into the pixel layer PIXL. Alternatively, the edges of the inorganic encapsulation layer may be located at the peripheral region. The organic encapsulation layer is located between two adjacent inorganic encapsulation layers in order to achieve planarization and to attenuate stresses between the inorganic encapsulation layers. Wherein an edge of the organic encapsulation layer may be located between an edge of the display region and an edge of the inorganic encapsulation layer. Illustratively, the thin film encapsulation layer TFE includes a first inorganic encapsulation layer CVD1, an organic encapsulation layer IJP, and a second inorganic encapsulation layer CVD2 laminated in this order on a side of the pixel layer PIXL remote from the substrate SBT. Of course, in other embodiments of the present disclosure, the display panel may not be provided with a thin film encapsulation layer, and the pixel layer may be encapsulated and protected in other manners.

In some embodiments of the present disclosure, referring to fig. 2, the display panel PNL may further include a touch functional layer TSL, and the touch functional layer TSL may be disposed on a side of the thin film encapsulation layer TFE away from the driving layer DRL, so that the display panel PNL has a touch function.

In some embodiments of the present disclosure, referring to fig. 2, the display panel PNL may further include a reduced reflection layer CFL, which may be disposed on a side of the thin film encapsulation layer TFE away from the driving layer DRL to reduce reflection of ambient light and improve display quality.

Referring to fig. 3, the display device may include the display panel PNL and a driving module CTR for driving the display panel PNL, and the driving module CTR may load driving signals to the display panel PNL to enable the display panel PNL to display a picture. For example, the driving module CTR may include a source driving circuit, which loads a required driving voltage to each data line DL of the display panel PNL to drive each sub-pixel PIX. In the related art, the source driving circuit may drive each sub-pixel PIX with a large and constant driving force (a large driving current can be provided to rapidly increase or decrease the driving voltage on the data line DL). However, the driving force of the source driving circuit is not adjusted according to the specific situation of the displayed picture, and in some cases, there is a problem that the driving force is significantly higher than the required driving force, which results in high overall power consumption of the source driving circuit and waste of power consumption.

In the embodiment of the present disclosure, referring to fig. 4, a driving method of a display panel PNL includes:

step S110, determining voltage variation parameters of each driving partition DA; the driving partition DA includes a plurality of adjacent sub-pixels PIX; the voltage variation parameter of the driving partition DA is the maximum value of the driving voltage variation corresponding to each sub-pixel PIX in the driving partition DA; the driving voltage variation corresponding to the sub-pixel PIX is an absolute value of a difference between the driving voltage of the sub-pixel PIX and the driving voltage of the sub-pixel PIX in the previous row adjacent to the column;

step S120, determining the driving force of each driving partition DA according to the voltage variation parameters of each driving partition DA;

step S130, driving each sub-pixel PIX of the driving partition DA according to the driving force of the driving partition DA.

According to the driving method of the display panel PNL provided in the present disclosure, the display panel PNL may be driven in accordance with the driving partition DA. Wherein, before driving the sub-pixels PIX in each driving partition DA, the voltage variation parameter of the driving partition DA is determined. If the voltage variation parameter of the driving partition DA is smaller, it indicates that the difference of the driving voltages between two sub-pixels adjacent to the same column is smaller, and the pixel driving circuit PDC of the sub-pixel can be fully charged by a smaller driving force. In this embodiment, the driving force matched with the driving partition DA can be selected according to the voltage variation parameter of the driving partition DA, so that the excessive driving force is avoided when the voltage variation parameter of the driving partition DA is smaller, and further the waste of power consumption caused by the excessive driving force is avoided. Therefore, the driving method can reduce the driving force on the premise that the driving force meets the driving requirement, and avoid the excessive power consumption caused by the excessive driving force.

In one embodiment of the present disclosure, referring to fig. 5, the driving module CTR may include:

a voltage variation parameter determination circuit U1 configured to determine a voltage variation parameter of each driving section DA; the driving partition DA includes a plurality of adjacent sub-pixels PIX; the voltage variation parameter of the driving partition DA is the maximum value of the driving voltage variation corresponding to each sub-pixel PIX in the driving partition DA; the driving voltage variation corresponding to the sub-pixel PIX is an absolute value of a difference between the driving voltage of the sub-pixel PIX and the driving voltage of the sub-pixel PIX in the previous row adjacent to the column;

a driving force determination circuit U2 configured to determine driving forces of the respective driving partitions DA based on voltage variation parameters of the respective driving partitions DA;

the source driving circuit U3 is configured to drive each of the sub-pixels PIX of the driving partition DA according to the driving force of the driving partition DA.

Therefore, the driving module CTR can realize the driving method, and further power consumption of the source electrode driving circuit is reduced.

The principle and process of the driving method of the display panel PNL are exemplarily described and analyzed as follows with reference to the accompanying drawings and examples. It will be appreciated that the following analysis of the principle and process of the driving method of the display panel PNL may be equally applicable to the respective circuits of the driving module CTR of the display device.

In the embodiment of the present disclosure, the driving module CTR may determine the voltage variation parameters of the respective driving partitions DA according to the received picture data. The frame data at least includes gray levels of sub-pixels PIX of a frame. It will be appreciated that each subpixel PIX of the picture data is an image subpixel, and the subpixels on the display panel PNL are screen subpixels. The display device is used for enabling the screen sub-pixels to emit light according to the gray scale of the image sub-pixels, so that the gray scale of the screen sub-pixels is equal to or basically equal to the gray scale of the image sub-pixels. It will be appreciated that, in some cases, the driving module CTR may also correct or compensate the gray level of the image sub-pixel, or the driving module CTR may have signal deviation during driving, or the display panel PNL may have insufficient charging rate, or in other possible cases, the gray level of the screen sub-pixel may not be completely matched with the gray level of the image sub-pixel.

In the embodiment of the disclosure, the driving module CTR may load driving voltages to the respective sub-pixels PIX according to the picture data, and control driving forces when the driving voltages are loaded to the respective sub-pixels PIX, so as to avoid power consumption waste caused by excessive driving forces.

In one embodiment of the present disclosure, in step S110, the following method may be used to determine the voltage variation parameter of one of the driving partitions DA:

step S210, determining a gray level variation of a sub-pixel group corresponding to each sub-pixel PIX of the driving partition DA; the sub-pixel group comprises a first sub-pixel and a second sub-pixel which are adjacent to each other in the same column, and the second sub-pixel is positioned on the last sub-pixel row of the first sub-pixel; the gray level variation of the sub-pixel group is the absolute value of the difference value between the gray level of the first sub-pixel and the gray level of the second sub-pixel; the sub-pixel group corresponding to the sub-pixel PIX is a sub-pixel group taking the sub-pixel PIX as a first sub-pixel;

step S220, determining reference sub-pixel groups of various sub-pixel groups in sub-pixel groups corresponding to the sub-pixels PIX of the driving partition DA; in the same type of sub-pixel groups, the sub-pixels PIX of each sub-pixel group have the same color combination; the gray scale variation of the reference sub-pixel group of the same sub-pixel group is larger than that of other sub-pixel groups of the same sub-pixel group;

step S230, determining a driving voltage variation of each reference sub-pixel group;

Step S240, taking the maximum value of the driving voltage variation of each reference sub-pixel group as the voltage variation parameter of the driving partition DA.

In this embodiment, the sub-pixel group (reference sub-pixel group) with the largest possible driving voltage variation can be selected by calculating the gray scale variation of the sub-pixel group; and then calculating the driving voltage variation corresponding to the sub-pixel groups, and finding out the maximum value of the driving voltage variation. This can greatly reduce the amount of calculation of the voltage variation parameter for determining the driving partition DA. For example, if the driving voltage of each sub-pixel PIX is calculated according to the gray level of each sub-pixel PIX, then the driving voltage variation of the sub-pixel group is calculated according to the driving voltage of each sub-pixel PIX, and finally the maximum value is selected from the driving voltage variation, the calculated amount is greatly increased. In particular, the display device often needs to perform gamma correction to improve the display effect, which may require a large amount of calculation for calculating the driving voltage of the subpixel PIX according to the gray scale of the subpixel PIX. In the embodiment of the disclosure, the determination of the voltage variation parameter can be realized only by determining the driving voltage of a part of the sub-pixels PIX, so that the accuracy is high, the calculated amount can be greatly reduced, and the power consumption is further reduced.

In this embodiment, the first subpixel and the second subpixel being adjacent to each other in the same column means that the pixel driving circuit PDC of the first subpixel and the pixel driving circuit PDC of the second subpixel are connected to the same data line DL, and are connected to two adjacent scanning lines GL, respectively. The second sub-pixel being located in the previous sub-pixel row of the first sub-pixel means that, when the display panel PNL is driven, the first sub-pixel and the second sub-pixel are sequentially driven through the same data line DL, specifically, the second sub-pixel is driven first and then the first sub-pixel. As such, the driving voltage variation amount of the sub-pixel group reflects the variation amount of the driving voltage on the data wiring DL when switching from driving the second sub-pixel to driving the first sub-pixel; the change speed of the driving voltage is related to the driving force of the source driving circuit. The greater the driving force of the source driving circuit, the faster the data trace DL is charged or discharged, the faster the driving voltage is changed, and accordingly, the greater the power consumption. Conversely, the smaller the driving force of the source driving circuit, the slower the charging or discharging speed of the data trace DL, the slower the change speed of the driving voltage, and correspondingly, the lower the power consumption. It can be understood that if the driving force of the source driving circuit is too small to cause insufficient driving capability, the driving voltage on the data line DL may rise too slowly or fall too slowly, which may cause a problem of insufficient charging rate of the pixel driving circuit PDC. Therefore, the source driving circuit has enough driving force and avoids the driving force from exceeding the requirement greatly, and the power consumption can be reduced under the condition of normally driving the sub-pixels PIX of the driving partition DA.

In this embodiment, the sub-pixel groups may be classified into a plurality of types according to the types of color combinations of the sub-pixels PIX in the sub-pixel groups, and then the respective reference sub-pixel groups of the respective sub-pixel groups may be determined. For example, if the colors of the first and second sub-pixels of two sub-pixel groups are the same, then the two sub-pixel groups are the same type of sub-pixel group. For another example, if the color of the first subpixel group is the same as the color of the second subpixel group, and the color of the second subpixel of the first subpixel group is the same as the color of the first subpixel of the second subpixel group, then the two subpixel groups are the same type of subpixel group.

In one embodiment of the present disclosure, the driving voltage variation amount of one reference subpixel group may be determined as follows:

For example, the theoretical driving voltage of the first sub-pixel may be determined according to the gray level of the first sub-pixel and the gamma correction curve corresponding to the first sub-pixel; then, the driving voltage of the first sub-pixel is determined according to the theoretical driving voltage of the first sub-pixel, the set picture brightness and the brightness-scale factor curve.

For another example, the theoretical driving voltage of the second sub-pixel may be determined according to the gray level of the second sub-pixel and the gamma correction curve corresponding to the second sub-pixel; and then determining the driving voltage of the second sub-pixel according to the theoretical driving voltage of the second sub-pixel, the set picture brightness and the brightness-scale factor curve.

In this embodiment, the gamma correction curve is a gamma correction curve at the rated maximum luminance, and reflects the driving voltages corresponding to the different gray scales when displaying at the rated maximum luminance. For example, when the rated maximum display luminance set by the display device is 500 nit, the gamma correction curve is a gamma correction curve when the maximum screen luminance is 500 nit. Further, the gamma correction curves to be adopted for the sub-pixels PIX of different colors are different.

In one example, the gamma correction curve may take the form of a lookup table including a plurality of binding point gray levels and driving voltages corresponding to the binding point gray levels. For example, the driving voltages corresponding to the gray scales of the binding points may be stored in the gamma register in a preset order. In determining the driving voltage according to the gamma correction curve, a linear interpolation algorithm may be used to determine a driving voltage (theoretical driving voltage) corresponding to the gray scale of the sub-pixel PIX.

In this embodiment, the driving voltage of the sub-pixel PIX is determined only according to the gray scale and the gamma correction curve of the sub-pixel PIX without considering the set screen brightness of the display device, and is the theoretical driving voltage of the sub-pixel PIX.

In this embodiment, the display device may receive an external control signal to control the set screen brightness of the display panel PNL, the maximum value of which is the rated maximum display brightness. For example, when the maximum display luminance of the display device is 500 nit, the set screen luminance may be 100 nit, 200 nit, 300 nit, 400 nit, or 500 nit.

In this embodiment, a luminance-scale factor curve is used to reflect the mapping between luminance and scale factor. In one example, the luminance may be represented using a DBV. For example, in the luminance-scale factor curve illustrated in fig. 6, luminance is represented by DBV. It will be appreciated that in the example of fig. 6, the maximum value of DBV is 4096; in other examples of the present disclosure, the maximum value of the DBV may be other values. It will be appreciated that the luminance versus scale factor curve illustrated in fig. 6 is merely an example, and that the scale factors for different DBV values may be selected for other values as desired or corrected. Of course, the brightness may be expressed in other parameters or forms. In one example, the luminance-scale factor curve may be in the form of a look-up table, such as a plurality of preset luminances (e.g., preset DBV values) and corresponding scale factors.

Alternatively, the scale factor may be determined based on the luminance-scale factor curve and the set picture luminance, for example, a linear interpolation algorithm may be used to determine the scale factor corresponding to the set picture luminance. Then, the driving voltage of the sub-pixel PIX is determined according to the scale factor and the theoretical driving voltage, for example, a product of the scale factor and the theoretical driving voltage is used as the driving voltage of the sub-pixel PIX.

In one example, a theoretical driving voltage of the first sub-pixel is determined according to a gray scale of the first sub-pixel and a gamma correction curve corresponding to the first sub-pixel; determining a scale factor of the first sub-pixel according to the set picture brightness and the brightness-scale factor curve; the product of the theoretical driving voltage of the first sub-pixel and the scaling factor is obtained as the driving voltage of the first sub-pixel.

In one example, determining a theoretical driving voltage of the second sub-pixel according to a gray scale of the second sub-pixel and a gamma correction curve corresponding to the second sub-pixel; determining a scale factor of the second sub-pixel according to the set picture brightness and the brightness-scale factor curve; and obtaining the product of the theoretical driving voltage of the second sub-pixel and the scaling factor as the driving voltage of the second sub-pixel.

It will be appreciated that in other embodiments of the present disclosure, other methods may also be employed to determine the voltage variation parameters of the respective drive sections DA.

In one embodiment of the present disclosure, the driving partition DA includes each subpixel PIX of one frame. In other words, the whole frame of picture is driven as one driving partition DA, so that the driving force of the source driving circuit is matched with the driving voltage fluctuation degree in the whole frame of picture display process, and the power consumption of the source driving circuit is further reduced.

In another embodiment of the present disclosure, a frame of a picture is divided into a plurality of different slices, each of which is capable of being encoded and decoded independently of the others; the number of the driving partitions DA is a plurality of and corresponds to the plurality of the fragments one by one. In other words, the driving partition DA may be determined by the slices in the picture data transmission process, with each slice being taken as one driving partition DA. Thus, the driving force regulation and control precision of the source electrode driving circuit can be improved, and the power consumption of the source electrode driving circuit can be further reduced.

In another embodiment of the present disclosure, any one of the driving partitions DA includes one sub-pixel row or a plurality of sub-pixel rows. For example, each driving partition DA may be made to include one subpixel row. For another example, each driving partition DA may be made to include a plurality of sub-pixel rows, for example, 5 to 100 sub-pixel rows. By the arrangement mode, the range of the driving partition DA can be reduced, the fine degree of driving force regulation and control is improved, and the power consumption of the source electrode driving circuit is reduced.

It will be appreciated that in other embodiments of the present disclosure, the drive partition DA may also be divided in other ways.

As follows, a method of determining the voltage variation parameter of the driving partition DA is exemplarily described taking the display panel PNL illustrated in fig. 7 as an example. In this example, the driving partition DA is an entire frame of picture. Wherein R (i, j) represents the red subpixel PIX of the i-th row, j-th column; g (i, j) represents the green subpixel PIX of the i-th row and the j-th column; b (i, j) represents the blue subpixel PIX of the i-th row and the j-th column; i and J are positive integers, I is in the range of 1 to I, and J is in the range of 1 to J. I is the number of rows of subpixels of the display panel PNL, and J is the number of columns of subpixels PIX of the display panel PNL. In this example, if the color of the subpixel PIX is not limited, P (i, j) may be used to represent the ith row and jth column of subpixels PIX. In this example, the subpixel groups include two types, one type being a red-blue subpixel group and one type being a green-green subpixel group.

In this example, the gray-scale variation Δg of the sub-pixel group corresponding to each of the sub-pixels PIX of the driving partition DA may be determined first. The absolute value of the gray-scale difference between two adjacent rows may be calculated from the gray-scale of each sub-pixel PIX of each sub-pixel row.

For example, the P (i, j) corresponding sub-pixel group of the i-th row, j-th column includes P (i, j) and P (i-1, j), where i is not less than 2; in this subpixel group, P (i, j) is the first subpixel and P (i-1, j) is the second subpixel. The gray-scale variation ΔG_P (i, j) corresponding to P (i, j) is |G_P (i, j) -G_P (i-1, j) |. Wherein G_P (i, j) is the gray level of P (i, j), and G_P (i-1, j) is the gray level of P (i-1, j). In this example, the gray-scale variation amount of the sub-pixel group corresponding to each sub-pixel PIX in the first sub-pixel row may not be calculated, or the gray-scale thereof may be set as the gray-scale variation amount of the corresponding sub-pixel group, or the gray-scale variation amount of the corresponding sub-pixel group thereof may be set to a constant value (e.g., 0).

As an example, the sub-pixel group corresponding to B (2, 1) includes B (2, 1) and R (1, 1), and belongs to the red and blue sub-pixel group. The gray level variation delta G_B (2, 1) of the sub-pixel group corresponding to B (2, 1) is |G_B (2, 1) -G_R (1, 1) |. G_B (2, 1) is the gray level of B (2, 1); G_R (1, 1) is the gray level of R (1, 1).

As an example, the sub-pixel group corresponding to G (2, 2) includes G (2, 2) and G (1, 2), and belongs to the green-green sub-pixel group. The gray level variation Δg_g (2, 2) of the sub-pixel group corresponding to G (2, 2) is |g_g (2, 2) -g_g (1, 2) |. G_G (2, 2) is the gray scale of G (2, 2); G_G (1, 2) is the gray level of G (1, 2).

As an example, the sub-pixel group corresponding to R (2, 3) includes R (2, 3) and B (1, 3), and belongs to the red and blue sub-pixel group. The gray level variation delta G_R (2, 3) of the sub-pixel group corresponding to R (2, 3) is |G_R (2, 3) -G_B (1, 3) |. G_R (2, 3) is the gray scale of R (2, 3); G_B (1, 3) is the gray level of B (1, 3). Therefore, the sub-pixel group corresponding to R (2, 3) and the sub-pixel group corresponding to B (2, 1) belong to the same type of sub-pixel group.

As an example, the sub-pixel group corresponding to G (2, 4) includes G (2, 4) and G (1, 4), and belongs to the green-green sub-pixel group. The gray level variation Δg_g (2, 4) of the sub-pixel group corresponding to G (2, 4) is |g_g (2, 4) -g_g (1, 4) |. G_G (2, 4) is the gray scale of G (2, 4); G_G (1, 4) is the gray level of G (1, 4). Therefore, the sub-pixel group corresponding to G (2, 4) and the sub-pixel group corresponding to G (2, 2) belong to the same type of sub-pixel group.

After determining the gray-scale variation Δg of the sub-pixel group corresponding to each sub-pixel PIX of the driving partition DA, determining the respective maximum gray-scale variation of each sub-pixel group. For example, by comparison, the maximum gray-scale variation max_ΔΔ_ RB of the red and blue sub-pixel groups corresponding to the sub-pixels PIX in the driving section DA and the maximum gray-scale variation max_Δ_ GG of the green and green sub-pixel groups corresponding to the sub-pixels PIX in the driving section DA are determined. Then, each red-blue sub-pixel group having the maximum gray-scale variation max_Δ_ RB is taken as a reference sub-pixel group; each green-green sub-pixel group having the maximum gray-scale variation max_Δ_ GG is taken as a reference sub-pixel group. It is to be understood that the number of red and blue sub-pixel groups as the reference sub-pixel group may be one or more; the number of the green-green sub-pixel groups as the reference sub-pixel group may be one or more.

Then, the driving voltage variation amount of each reference sub-pixel group is determined according to the gray scale variation amount of each reference sub-pixel group. Specifically, when calculating the driving voltage variation amount of one reference sub-pixel group, the driving voltage of the first sub-pixel and the driving voltage of the second sub-pixel of the reference sub-pixel group may be calculated first, and then the absolute value of the difference between the driving voltage of the first sub-pixel and the driving voltage of the second sub-pixel may be used as the driving voltage variation amount of the reference sub-pixel group.

Then, the maximum driving voltage variation is selected as the voltage variation parameter of the driving partition DA from the driving voltage variation of each reference subpixel group of the driving partition DA.

As follows, a method of determining the voltage variation parameter of the driving partition DA will be exemplarily described again using the display panel PNL illustrated in fig. 8 as an example. In this example, the driving partition DA is an entire frame of picture. Wherein R (i, j) represents the red subpixel PIX of the i-th row, j-th column; g (i, j) represents the green subpixel PIX of the i-th row and the j-th column; b (i, j) represents the blue subpixel PIX of the i-th row and the j-th column; i and J are positive integers, I is in the range of 1 to I, and J is in the range of 1 to J. I is the number of rows of subpixels of the display panel PNL, and J is the number of columns of subpixels PIX of the display panel PNL. In this example, if the color of the subpixel PIX is not limited, P (i, j) may be used to represent the ith row and jth column of subpixels PIX. In this example, the subpixel groups include three types, one type being a red-red subpixel group, one type being a green-green subpixel group, and one type being a blue-blue subpixel group.

As an example, the sub-pixel group corresponding to R (2, 1) includes R (2, 1) and R (1, 1), and belongs to the red sub-pixel group. The gray level variation delta G_R (2, 1) of the sub-pixel group corresponding to R (2, 1) is |G_R (2, 1) -G_R (1, 1) |. G_R (2, 1) is the gray level of R (2, 1); G_R (1, 1) is the gray level of R (1, 1).

As an example, the sub-pixel group corresponding to B (2, 3) includes B (2, 3) and B (1, 3), and belongs to the blue sub-pixel group. The gray level variation delta G_B (2, 3) of the sub-pixel group corresponding to B (2, 3) is |G_B (2, 3) -G_B (1, 3) |. G_B (2, 3) is the gray level of B (2, 3); G_B (1, 3) is the gray level of B (1, 3).

After determining the gray-scale variation Δg of the sub-pixel group corresponding to each sub-pixel PIX of the driving partition DA, determining the respective maximum gray-scale variation of each sub-pixel group. For example, by comparison, the maximum gray-scale variation max_Δ_ RR of the red-red sub-pixel group corresponding to the sub-pixel PIX in the driving partition DA, the maximum gray-scale variation max_Δ_ GG of the green-green sub-pixel group corresponding to the sub-pixel PIX in the driving partition DA, and the maximum gray-scale variation max_Δ_ BB of the blue-blue sub-pixel group corresponding to the sub-pixel PIX in the driving partition DA are determined. Then, each red subpixel group having the maximum gray-scale variation max_Δ_ RR is taken as a reference subpixel group; taking each green sub-pixel group with the maximum gray level variation max delta GG as a reference sub-pixel group; each blue subpixel group having the maximum gray level variation max_Δ_ peripheral area BB is taken as a reference subpixel group. It will be appreciated that the number of red sub-pixel groups as reference sub-pixel groups may be one or more; the number of the green-green sub-pixel groups as the reference sub-pixel group may be one or more; the number of blue-blue sub-pixel groups as the reference sub-pixel group may be one or more.

In one embodiment of the present disclosure, the driving force of each driving section DA may be determined one by one. The driving force of any one of the driving sections DA may be determined based on the voltage variation parameter of that driving section DA.

In one example, the driving force of one driving partition DA may be determined as follows: referring to fig. 9, according to the voltage variation parameter of the driving partition DA, determining a voltage variation parameter range to which the voltage variation parameter of the driving partition DA belongs; and then determining the driving force of the driving partition DA according to the voltage variation parameter range and the driving force-voltage variation parameter range table. This is equivalent to dividing the driving force into a plurality of driving force grades, determining the driving force with the corresponding grade according to the voltage variation parameter range of the driving partition DA, so that the driving voltage variation in the driving partition DA is matched with the driving force, the waste of power consumption caused by overlarge driving force is avoided, and the driving capability deficiency caused by overlarge driving force is also avoided.

In another example, the driving force of one driving partition DA may be determined as follows: referring to fig. 10, according to the voltage variation parameter and the driving force-voltage variation parameter table of the driving partition DA, a driving force corresponding to the voltage variation parameter is determined using a linear interpolation algorithm. In the driving force-voltage variation parameter table, a plurality of sampling points each including one driving force and one voltage variation parameter are stored.

If the voltage variation parameter of the driving partition DA exactly matches the voltage variation parameter of a certain sampling point, the driving force of the sampling point can be used as the driving force of the driving partition DA.

If the voltage variation parameters of the driving partition DA are not matched with the voltage variation parameters of any sampling point, determining the two sampling points as reference sampling points according to the voltage variation parameters of the driving partition DA; the voltage variation parameter of the first reference sampling point is smaller than the voltage variation parameter of the driving partition DA, and the voltage variation parameter of the second reference sampling point is larger than the voltage variation parameter of the driving partition DA. The driving force of the driving partition DA may be determined according to the driving force of the first reference sampling point and the driving force of the second reference sampling point, so that the sample points formed by the driving force of the driving partition DA and the voltage variation parameter are linear with the first sampling point and the second sampling point.

Of course, in other embodiments of the present disclosure, other methods may also be employed to determine the driving force of the driving partition DA according to the voltage variation parameter of the driving partition DA.

In the embodiment of the present disclosure, each of the sub-pixels PIX of the driving partition DA may be driven according to the driving force of the driving partition DA. Specifically, when the driving partition DA is driven, that is, when a driving voltage is applied to the sub-pixels PIX in the driving partition DA, the source driving circuit may be caused to apply the driving voltage to the data trace DL corresponding to the driving partition DA according to the determined driving force.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A driving method of a display panel, comprising:

and driving each sub-pixel of the driving partition according to the driving force of the driving partition.

2. The method of driving a display panel according to claim 1, wherein determining a voltage variation parameter of one of the driving sections comprises:

determining the driving voltage variation of each reference sub-pixel group;

3. The method of driving a display panel according to claim 2, wherein determining a driving voltage variation amount of one of the reference subpixel groups comprises:

4. A driving method of a display panel according to claim 3, wherein determining the driving voltage of the first sub-pixel comprises:

determining the drive voltage of the second sub-pixel comprises:

5. The method according to claim 4, wherein determining the driving voltage of the first sub-pixel according to the theoretical driving voltage of the first sub-pixel, the set picture brightness and the brightness-scale factor curve comprises:

6. The method of driving a display panel according to claim 1, wherein the driving partition includes sub-pixels of one frame of picture.

7. The driving method of a display panel according to claim 1, wherein one frame of picture is divided into a plurality of different slices, each of the slices being capable of being encoded and decoded independently;

8. The driving method of a display panel according to claim 1, wherein any one of the driving sections includes one sub-pixel row or a plurality of sub-pixel rows.

9. The driving method of a display panel according to claim 1, wherein determining the driving force of the driving partition according to the voltage variation parameter of one of the driving partitions comprises:

10. The driving method of a display panel according to claim 1, wherein determining the driving force of the driving partition according to the voltage variation parameter of one of the driving partitions comprises:

11. A driving module of a display panel, comprising:

12. A display device comprising the drive module of claim 11 and a display panel, the drive module being electrically connected to the display panel.

13. The display device of claim 12, wherein the display panel is an OLED display panel, a QLED display panel, a Micro LED display panel, or a Mini LED display panel.