Driving circuit for display panel, driving method therefor, and display apparatus

Abstract

Provided in the present invention are a driving circuit for a display panel, a driving method therefor, and a display apparatus. The driving circuit for a display panel comprises: a control sub-circuit, a signal adjustment sub-circuit, and a signal conversion sub-circuit, wherein the control sub-circuit is used for receiving to-be-displayed brightness level information of the display panel, and acquiring, on the basis of said brightness level information, power source signal information matching said brightness level information; the signal adjustment sub-circuit is used for receiving a basic power source signal, and adjusting, on the basis of the power source signal information, the basic power source signal to be a target power source signal matching said brightness level information; and the signal conversion sub-circuit is used for generating a gate modulation voltage signal on the basis of the target power source signal.

Description

Driving circuit of display panel, driving method thereof and display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202411154801.3, filed on August 21, 2024, the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of display, and in particular, to a driving circuit of display panel, a driving method thereof and a display device. BACKGROUND

[0004] With the continuous development of display technology, the application field of display products is becoming more and more extensive, and the improvement of the power consumption of display products has also attracted more and more attention. After a long period of development, the evaluation of power consumption of various terminals has become more and more perfect. Instead of evaluating the power consumption performance of only some special pictures, a more accurate representation of the multi-scene power consumption of the display screen is established by establishing a more user-friendly endurance model. Therefore, the screen factory needs to have good power consumption performance at various brightness levels. Therefore, how to better reduce the power consumption of display products under various different brightness levels has become a technical problem to be solved. SUMMARY

[0005] The purpose of the present disclosure is to provide a driving circuit of display panel, a driving method thereof and a display device.

[0006] In order to achieve the above-mentioned purpose, the present disclosure provides the following technical solutions:

[0007] The first aspect of the present disclosure provides a driving circuit of display panel, comprising:

[0008] a control sub-circuit, configured to receive to-be-displayed brightness level information of the display panel, and acquire power signal information matched with the to-be-displayed brightness level information according to the to-be-displayed brightness level information;

[0009] a signal adjustment sub-circuit, configured to receive a basic power signal, and adjust the basic power signal to a target power signal matched with the to-be-displayed brightness level information according to the power signal information;

[0010] a signal conversion sub-circuit, configured to generate a gate modulation voltage signal according to the target power signal.

[0011] Optionally, the driving circuit further comprises:

[0012] a storage sub-circuit, configured to store power signal information matched with a plurality of display brightness level information of the display panel.

[0013] The control sub-circuit is configured to obtain the power signal information matched with the to-be-displayed brightness level information from the storage sub-circuit.

[0014] Optionally, the driving circuit further comprises:

[0015] The calculation sub-circuit is configured to, when the to-be-displayed brightness level information is not included in the plurality of display brightness level information, calculate the power signal information matched with the to-be-displayed brightness level information by using a linear interpolation algorithm and the power signal information matched with the two display brightness level information closest to the to-be-displayed brightness level information in the plurality of display brightness level information, the value corresponding to the to-be-displayed brightness level information being between the values corresponding to the two closest display brightness level information.

[0016] The signal adjustment sub-circuit is further configured to adjust the base power signal to the target power signal matched with the to-be-displayed brightness level information according to the calculated power signal information.

[0017] Optionally, the signal adjustment sub-circuit comprises a low-voltage linear voltage regulator configured to receive the base power signal and adjust the base power signal to the target power signal matched with the to-be-displayed brightness level information according to the power signal information.

[0018] Optionally, the driving circuit further comprises:

[0019] The power management integrated sub-circuit is configured to provide the base power signal.

[0020] The Gamma sub-circuit is configured to generate a Gamma voltage signal according to the gate modulation power signal.

[0021] Optionally, the target power signal has a fixed difference in voltage value with the gate modulation voltage signal.

[0022] Based on the technical solutions of the driving circuit of the display panel, a second aspect of the present disclosure provides a display device comprising a display panel and the driving circuit.

[0023] Based on the technical solutions of the driving circuit of the display panel, a third aspect of the present disclosure provides a driving method applied to the driving circuit of the display panel; the driving method comprises:

[0024] The control sub-circuit is configured to receive the to-be-displayed brightness level information of the display panel and obtain the power signal information matched with the to-be-displayed brightness level information according to the to-be-displayed brightness level information.

[0025] The signal adjusting sub-circuit receives a basic power signal and adjusts the basic power signal to a target power signal matching the to-be-displayed brightness level information according to the power signal information;

[0026] The signal converting sub-circuit generates a gate modulation voltage signal according to the target power signal.

[0027] Optionally, the driving method further comprises:

[0028] The storage sub-circuit stores power signal information matching a plurality of display brightness level information of the display panel;

[0029] The control sub-circuit acquires power signal information matching the to-be-displayed brightness level information from the storage sub-circuit.

[0030] Optionally, the driving method further comprises:

[0031] When the to-be-displayed brightness level information is not included in the plurality of display brightness level information, the calculation sub-circuit calculates power signal information matching the to-be-displayed brightness level information by using a linear interpolation algorithm according to power signal information matching two display brightness level information closest to the to-be-displayed brightness level information in the plurality of display brightness level information; the to-be-displayed brightness level information corresponds to a value between values corresponding to the two closest display brightness level information.

[0032] The signal adjusting sub-circuit adjusts the basic power signal to a target power signal matching the to-be-displayed brightness level information according to the calculated power signal information.

[0033] Optionally, the signal adjusting sub-circuit comprises a low-voltage linear voltage regulator, and the driving method specifically comprises:

[0034] The low-voltage linear voltage regulator receives a basic power signal and adjusts the basic power signal to a target power signal matching the to-be-displayed brightness level information according to the power signal information.

[0035] Optionally, the driving method further comprises:

[0036] The power management integrated sub-circuit provides a basic power signal;

[0037] The Gamma sub-circuit generates a Gamma voltage signal according to the gate modulation power signal. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of the present disclosure, illustrate certain illustrative embodiments of the present disclosure and are used to explain the present disclosure, but do not limit the present disclosure. In the drawings:

[0039] FIG. 1 is a structural schematic diagram of a driving circuit in the prior art;

[0040] FIG. 2 is a first structural schematic diagram of a driving circuit provided by an embodiment of the present disclosure;

[0041] FIG. 3 is a second structural schematic diagram of a driving circuit provided by an embodiment of the present disclosure;

[0042] FIG. 4 is a third structural schematic diagram of a driving circuit provided by an embodiment of the present disclosure;

[0043] FIG. 5 is a fourth structural schematic diagram of a driving circuit provided by an embodiment of the present disclosure;

[0044] FIG. 6 is a circuit diagram of an LDO provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0045] In order to further illustrate the driving circuit of the display panel and the driving method thereof, and the display device provided by the embodiments of the present disclosure, the following will be described in detail in conjunction with the accompanying drawings of the specification.

[0046] It is found through research that in the traditional design scheme, the AVDD voltage used by the display product is the same under various different Duty Brightness Voltages (DBVs). However, the AVDD voltage is mainly subject to the black state Margin, that is, the VGMP voltage (a parameter for controlling the gate voltage of a transistor, which is associated with the DBV), and the black state Margin is often lower under high brightness, that is, a very high VGMP voltage is not required, and a very high AVDD voltage is not required accordingly. Based on the above finding, it is considered to dynamically adjust the AVDD voltage, that is, to adaptively provide an AVDD voltage matched with the DBV under the condition that the display product is in various different DBVs, so as to effectively reduce the power consumption of the display product.

[0047] As shown in FIG. 1, in the traditional technical scheme, a power management integrated circuit (PMIC) provides an AVDD voltage, and a DDIC generates a VGMP voltage after receiving the AVDD voltage. Since there is no circuit part in the PMIC that can dynamically adjust the AVDD voltage with the DBV, the AVDD voltage used in the display product is constant and cannot effectively reduce the power consumption of the display product.

[0048] In more detail, the black state margin refers to the voltage margin required by the display product when displaying extremely dark colors, that is, whether the voltage of the data signal transmitted by the data line is sufficient to support the brightness of the module being less than or equal to 0.001 nit. For example, the black state margin required by DBV = 3515 (900 nit) is different from the black state margin required by DBV = 1 (2 nit), because DBV = 3515 itself has a higher brightness, and the brightness at the gray scale binding point to be calibrated is also higher than that of DBV = 1. In addition, in the case of DBV = 1, Vint2-ELVSS > 0V, Vint2 is the voltage value of the initialization signal received by the anode layer in the sub-pixel, and ELVSS is the voltage value of the signal received by the cathode layer. Therefore, the parasitic capacitance generated at the node where the sub-pixel driving circuit in the sub-pixel is coupled to the anode layer also increases the brightness of the module by discharging; therefore, the requirement for the black state margin of DBV = 1 is higher than that of DBV = 3515, that is, DBV = 1 requires a higher VGMP voltage. Relationship between AVDD voltage and black state voltage: the AVDD voltage, as an external supply voltage, does not directly act on the sub-pixel driving circuit of the display product, and the AVDD voltage is usually converted into a VGMP voltage as the black state voltage of the data signal. The display driving integrated circuit (DDIC) requires the AVDD voltage to be greater than the VGMP voltage by 0.3V. Therefore, the important factor limiting the AVDD voltage from decreasing is that the VGMP voltage cannot be reduced. The AVDD voltage of the analog part itself is relatively high (generally above 7V), and the current is large, accounting for a large part of the overall power consumption of the DDIC. If the AVDD voltage can be reduced, more power consumption can be saved.

[0049] Referring to FIG. 2, the display panel driving circuit provided by the embodiment of the present disclosure includes:

[0050] The control sub-circuit 10 is configured to receive the to-be-displayed brightness level information X1 of the display panel, and obtain power signal information X2 matched with the to-be-displayed brightness level information X1 according to the to-be-displayed brightness level information X1.

[0051] The signal adjustment sub-circuit 20 is configured to receive a basic power signal AVDDP, and adjust the basic power signal AVDDP to a target power signal AVDD' matched with the to-be-displayed brightness level information X1 according to the power signal information X2.

[0052] The signal conversion sub-circuit 30 is configured to generate a gate modulation voltage signal (VGMP, VGSP) according to the target power signal AVDD'.

[0053] As shown in FIG. 3, the driving circuit includes a power management integrated sub-circuit 40 which provides a basic power supply signal AVDDP. The basic power supply signal AVDDP is a signal with a fixed voltage. The control sub-circuit 10 receives the display brightness level information X1 of the display panel, and acquires power supply signal information X2 matched with the display brightness level information X1 according to the display brightness level information X1. The signal adjustment sub-circuit 20 receives the basic power supply signal AVDDP, and adjusts the basic power supply signal AVDDP into a target power supply signal AVDD' matched with the display brightness level information X1 according to the power supply signal information X2. The target power supply signal AVDD' can better match the display brightness level of the display panel, i.e., the demand of the display brightness level of the display panel is met, and the waste of the power supply signal is avoided. The signal conversion sub-circuit 30 generates a gate modulation voltage signal according to the target power supply signal AVDD'. The driving circuit includes a Gamma sub-circuit 50 which generates a Gamma voltage signal according to the gate modulation voltage signal.

[0054] The display brightness level information X1 of the display panel is the brightness level of the display panel to be displayed.

[0055] The voltage value of the target power supply signal AVDD' and the voltage value of the gate modulation voltage signal have a fixed difference. For example, the voltage value of the target power supply signal AVDD' minus 0.3V is the voltage value of the gate modulation voltage signal, but is not limited thereto. It should be noted that the higher the DBV, the higher the display brightness, and the smaller the voltage of the gate modulation voltage signal required. The target power supply signal AVDD' is the previous stage of the gate modulation voltage signal, and the voltage value of the target power supply signal AVDD' and the voltage value of the gate modulation voltage signal have a fixed difference. Therefore, when the DBV is higher, the voltage value of the gate modulation voltage signal is lower, and the voltage value of the target power supply signal AVDD' can be lower.

[0056] The basic power supply signal AVDDP is an external power supply signal. The target power supply signal AVDD' can be used to provide power supply signals for the gate driving circuit and the source driving circuit in the display panel.

[0057] The gate modulation voltage signal includes a VGMP signal and a VGSP signal. The Gamma sub-circuit 50 accurately outputs a Gamma voltage signal according to the VGMP signal and the VGSP signal.

[0058] According to the specific structure of the driving circuit, the driving circuit of the display panel provided in the embodiment of the present disclosure can receive the to-be-displayed brightness level information X1 of the display panel, and acquire the power signal information X2 matched with the to-be-displayed brightness level information X1 in real time according to the to-be-displayed brightness level information X1; the signal adjustment sub-circuit 20 can receive the basic power signal AVDDP, and adjust the basic power signal AVDDP to the target power signal AVDD' matched with the to-be-displayed brightness level information X1 in real time according to the power signal information X2; and the signal conversion sub-circuit 30 can generate the gate modulation voltage signal according to the target power signal AVDD'. Therefore, in the driving circuit of the display panel provided in the embodiment of the present disclosure, the target power signal AVDD' matched with the to-be-displayed brightness level information X1 of the display panel can be switched in real time according to the to-be-displayed brightness level information X1, and the target power signal AVDD' is dynamically adjusted according to the characteristics of the DBV to be displayed by the display panel, so as to ensure that the display panel uses more reasonable target power signal AVDD' in different DBV scenarios, that is, the target power signal AVDD' is closest to the black state voltage, and the black state margin is not reserved too much, thereby achieving the technical effect of saving power consumption.

[0059] As shown in FIG. 4, in some embodiments, the driving circuit further includes a storage sub-circuit 60 configured to store the power signal information X2 matched with a plurality of display brightness level information of the display panel.

[0060] The control sub-circuit 10 is configured to acquire the power signal information X2 matched with the to-be-displayed brightness level information X1 from the storage sub-circuit 60.

[0061] For example, the storage sub-circuit 60 stores the power signal information X2 matched with 9 display brightness level information of the display panel, but is not limited thereto.

[0062] For example, the storage sub-circuit 60 includes a register module configured to provide the power signal information X2 matched with the to-be-displayed brightness level information X1 to the control sub-circuit 10.

[0063] When the driving circuit is applied to a display product, the voltage values of the target power signal AVDD' and the gate modulation voltage signal are manually modified to obtain the measured data in Table 1.

[0064] Table 1

[0065] It can be seen that setting different target power signals AVDD' under different DBVs can reduce the voltage of the target power signal AVDD' by 0.1V-0.3V, the power consumption saving interval is 5mW-20mW, and the Gamma yield can be ensured.

[0066] The driving circuit further includes a storage sub-circuit 60 configured to store power signal information X2 corresponding to a plurality of display brightness level information of the display panel; and the control sub-circuit 10 is configured to acquire, from the storage sub-circuit 60, power signal information X2 corresponding to the to-be-displayed brightness level information X1. Thus, the target power signal AVDD' corresponding to the to-be-displayed brightness level information X1 can be switched in real time, and the target power signal AVDD' can be dynamically adjusted according to the DBV characteristics of the display panel, so that the display panel uses a more reasonable target power signal AVDD' under different DBV scenarios, i.e., a target power signal AVDD' closest to the black state voltage, and a black state margin is not excessively reserved, thereby achieving the technical effect of saving power consumption.

[0067] As shown in FIG. 5, in some embodiments, the driving circuit further includes a calculation sub-circuit 70 configured to: when the to-be-displayed brightness level information X1 is not included in the plurality of display brightness level information, calculate, by using power signal information X2 corresponding to two display brightness level information closest to the to-be-displayed brightness level information X1 in the plurality of display brightness level information, power signal information X2 corresponding to the to-be-displayed brightness level information X1 by using a linear interpolation algorithm; and the value corresponding to the to-be-displayed brightness level information X1 is between the values corresponding to the two closest display brightness level information.

[0068] The signal adjustment sub-circuit 20 is further configured to adjust the basic power signal AVDDP to the target power signal AVDD' corresponding to the to-be-displayed brightness level information X1 according to the calculated power signal information X2.

[0069] When the to-be-displayed brightness level information X1 is not included in the plurality of display brightness level information, the calculation sub-circuit 70 can calculate, by using power signal information X2 corresponding to two display brightness level information closest to the to-be-displayed brightness level information X1 in the plurality of display brightness level information, power signal information X2 corresponding to the to-be-displayed brightness level information X1 by using a linear interpolation algorithm; and the signal adjustment sub-circuit 20 can adjust the basic power signal AVDDP to the target power signal AVDD' corresponding to the to-be-displayed brightness level information X1 according to the calculated power signal information X2.

[0070] The above setting mode can make the power signal information X2 matched with the to-be-displayed brightness level information X1 be calculated by the calculation sub-circuit 70 even if the power signal information X2 matched with the to-be-displayed brightness level information X1 is not stored in the storage sub-circuit 60, so that the target power signal AVDD' matched with the to-be-displayed brightness level information X1 can be switched in real time according to the to-be-displayed brightness level information X1 of the display panel, and the display panel can use more reasonable target power signal AVDD' in different DBV scenarios, thereby achieving the technical effect of saving power consumption.

[0071] In some embodiments, the signal adjustment sub-circuit 20 includes a low dropout regulator (LDO) for receiving a basic power signal AVDDP and adjusting the basic power signal AVDDP to the target power signal AVDD' matched with the to-be-displayed brightness level information X1 according to the power signal information X2. As shown in FIG. 6, the basic power signal AVDDP is input by an input terminal Vin, connected to the LDO circuit in series after a variable resistor, and the basic power signal AVDDP can be adjusted to the target power signal AVDD' matched with the to-be-displayed brightness level information X1 by adjusting the LDO variable resistor.

[0072] The LDO can adjust the resistance value of the variable resistor adaptively according to the power signal information X2 as the DBV changes, that is, the voltage value of the target power signal AVDD' can be dynamically adjusted, different voltage values of the target power signal AVDD' are set in different DBV, the display panel can use more reasonable target power signal AVDD' in different DBV scenarios, thereby achieving the technical effect of saving power consumption.

[0073] The display device provided by the embodiments of the present disclosure further includes a display panel and the driving circuit provided by the above embodiments.

[0074] For example, the display device includes a PMIC and a DDIC, the power management integrated sub-circuit 40 is integrated in the PMIC, and the control sub-circuit 10 is integrated in the DDIC, but is not limited thereto.

[0075] It should be noted that the display device can be a television, a display, a digital photo frame, a mobile phone, a tablet computer, or any product or component with a display function, and the display device further includes a flexible circuit board, a printed circuit board, a back plate, and the like.

[0076] The driving circuit of the display panel provided in the above embodiment can switch the target power signal AVDD' matching the to-be-displayed brightness level information X1 in real time according to the to-be-displayed brightness level information X1 of the display panel, and dynamically adjust the target power signal AVDD' according to the characteristics of the DBV to be displayed by the display panel, so as to ensure that the display panel uses a more reasonable target power signal AVDD' in different DBV scenarios, that is, a target power signal AVDD' closest to the black state voltage, and only a small amount of black state margin is reserved, thereby achieving the technical effect of saving power consumption.

[0077] Therefore, the display device provided in the embodiments of the present disclosure also has the beneficial effects of the above driving circuit, which will not be described herein.

[0078] The embodiments of the present disclosure also provide a driving method applied to the driving circuit provided in the above embodiments, and the driving method comprises the following steps.

[0079] The control sub-circuit 10 receives to-be-displayed brightness level information X1 of the display panel, and obtains power signal information X2 matching the to-be-displayed brightness level information X1 according to the to-be-displayed brightness level information X1.

[0080] The signal adjustment sub-circuit 20 receives a basic power signal AVDDP, and adjusts the basic power signal AVDDP to a target power signal AVDD' matching the to-be-displayed brightness level information X1 according to the power signal information X2.

[0081] The signal conversion sub-circuit 30 generates a gate modulation voltage signal according to the target power signal AVDD'.

[0082] For example, the power management integrated sub-circuit 40 provides a basic power signal AVDDP; the control sub-circuit 10 receives to-be-displayed brightness level information X1 of the display panel, and obtains power signal information X2 matching the to-be-displayed brightness level information X1 according to the to-be-displayed brightness level information X1; the signal adjustment sub-circuit 20 receives a basic power signal AVDDP, and adjusts the basic power signal AVDDP to a target power signal AVDD' matching the to-be-displayed brightness level information X1 according to the power signal information X2; the signal conversion sub-circuit 30 generates a gate modulation voltage signal according to the target power signal AVDD'; and the Gamma sub-circuit 50 generates a Gamma voltage signal according to the gate modulation power signal.

[0083] When the driving method provided by the embodiment of the present disclosure is used to drive the driving circuit provided by the above embodiment, the target power signal AVDD' matched with the to-be-displayed brightness level information X1 of the display panel can be switched in real time according to the to-be-displayed brightness level information X1, so that the target power signal AVDD' is dynamically adjusted according to the characteristics of the DBV to be displayed by the display panel, so as to ensure that the display panel uses a more reasonable target power signal AVDD' in different DBV scenarios, that is, the target power signal AVDD' is closest to the black state voltage, but only a small amount of black state Margin is reserved, thereby achieving the technical effect of saving power consumption.

[0084] In some embodiments, the driving method further includes: storing, by the storage sub-circuit 60, power signal information X2 matched with a plurality of display brightness level information of the display panel; and obtaining, by the control sub-circuit 10, the power signal information X2 matched with the to-be-displayed brightness level information X1 from the storage sub-circuit 60.

[0085] When the driving method provided by the above embodiment is used to drive the driving circuit provided by the above embodiment, the target power signal AVDD' matched with the to-be-displayed brightness level information X1 of the display panel can be switched in real time according to the to-be-displayed brightness level information X1, so that the target power signal AVDD' is dynamically adjusted according to the characteristics of the DBV to be displayed by the display panel, so as to ensure that the display panel uses a more reasonable target power signal AVDD' in different DBV scenarios, that is, the target power signal AVDD' is closest to the black state voltage, but only a small amount of black state Margin is reserved, thereby achieving the technical effect of saving power consumption.

[0086] In some embodiments, the driving method further includes:

[0087] When the to-be-displayed brightness level information X1 is not included in the plurality of display brightness level information, the power signal information X2 matched with the to-be-displayed brightness level information X1 is calculated by the calculation sub-circuit 70 according to the power signal information X2 matched with the two display brightness level information closest to the to-be-displayed brightness level information X1 in the plurality of display brightness level information by using a linear interpolation algorithm; the value corresponding to the to-be-displayed brightness level information X1 is between the values corresponding to the two closest display brightness level information;

[0088] The base power signal AVDDP is adjusted to the target power signal AVDD' matched with the to-be-displayed brightness level information X1 by the signal adjustment sub-circuit 20 according to the calculated power signal information X2.

[0089] When the driving method is used to drive the driving circuit provided in the above embodiment, even if the power signal information X2 matching the to-be-displayed brightness level information X1 is not stored in the storage sub-circuit 60, the power signal information X2 matching the to-be-displayed brightness level information X1 can be calculated by the calculation sub-circuit 70, so that the target power signal AVDD' matching the to-be-displayed brightness level information X1 can be switched in real time according to the to-be-displayed brightness level information X1 of the display panel, and the display panel can use a more reasonable target power signal AVDD' in different DBV scenarios, thereby achieving the technical effect of saving power consumption.

[0090] In some embodiments, the signal adjustment sub-circuit 20 includes a low-voltage linear voltage regulator, and the driving method specifically includes: receiving a basic power signal AVDDP by the low-voltage linear voltage regulator, and adjusting the basic power signal AVDDP to the target power signal AVDD' matching the to-be-displayed brightness level information X1 according to the power signal information X2.

[0091] The LDO can adjust the resistance value of the variable resistor adaptively according to the power signal information X2 as the DBV changes, so as to achieve the purpose of dynamically adjusting the voltage value of the target power signal AVDD', set different voltage values of the target power signal AVDD' in different DBV, and ensure that the display panel uses a more reasonable target power signal AVDD' in different DBV scenarios, thereby achieving the technical effect of saving power consumption.

[0092] It should be noted that the "same layer" in the embodiments of the present disclosure can refer to a film layer on the same structure layer. Alternatively, for example, the film layers on the same layer can be layer structures formed by using the same film forming process to form a film layer for forming a specific pattern, and then patterning the film layer by using the same mask plate through a one-time patterning process. According to different specific patterns, the one-time patterning process can include multiple exposure, development or etching processes, and the specific patterns in the formed layer structures can be continuous or discontinuous. These specific patterns can also be at different heights or have different thicknesses.

[0093] In the method embodiments of the present disclosure, the serial numbers of the steps cannot be used to limit the sequence of the steps, and for those skilled in the art, the sequence of the steps can be changed without creative labor, and the changed sequence is within the protection scope of the present disclosure.

[0094] It should be noted that each of the embodiments described in the specification of the present disclosure adopts a progressive description manner, and the same or similar parts between the embodiments can be mutually referred to. Each of the embodiments focuses on the differences from other embodiments. In particular, for the method embodiments, since they are basically similar to the product embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the product embodiments.

[0095] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning of the terms to a person skilled in the art. The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect", "couple", or "link" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0096] It can be understood that when an element such as a layer, a film, a region, or a substrate is referred to as being "on" or "under" another element, it can be "directly" on or under the other element, or an intervening element can also be present. In the description of the above-described embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0097] The above description is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A driving circuit of a display panel, comprising: a control sub-circuit configured to receive display brightness level information of the display panel, and obtain power signal information matched with the display brightness level information according to the display brightness level information; a signal adjusting sub-circuit configured to receive a basic power signal, and adjust the basic power signal into a target power signal matched with the display brightness level information according to the power signal information; a signal converting sub-circuit configured to generate a gate modulation voltage signal according to the target power signal.

2. The driving circuit of a display panel according to claim 1, wherein, The driving circuit further comprises: a storage sub-circuit configured to store power signal information matched with a plurality of display brightness level information of the display panel; the control sub-circuit is configured to obtain the power signal information matched with the display brightness level information from the storage sub-circuit.

3. The driving circuit of a display panel according to claim 2, wherein, The driving circuit further comprises: a calculation sub-circuit configured to, when the display brightness level information is not included in the plurality of display brightness level information, calculate the power signal information matched with the display brightness level information by using a linear interpolation algorithm and the power signal information matched with two display brightness level information closest to the display brightness level information in the plurality of display brightness level information, and the value corresponding to the display brightness level information is between the values corresponding to the two closest display brightness level information; the signal adjusting sub-circuit is further configured to adjust the basic power signal into the target power signal matched with the display brightness level information according to the calculated power signal information.

4. The driving circuit of a display panel according to any one of claims 1 to 3, wherein The signal adjusting sub-circuit comprises a low-voltage linear voltage regulator configured to receive the basic power signal, and adjust the basic power signal into the target power signal matched with the display brightness level information according to the power signal information.

5. The driving circuit of a display panel according to any one of claims 1 to 3, wherein The driving circuit further comprises: a power management integrated sub-circuit configured to provide the basic power signal; a Gamma sub-circuit configured to generate a Gamma voltage signal according to the gate modulation power signal.

6. The driving circuit of a display panel according to claim 1, wherein The voltage value of the target power signal and the voltage value of the gate modulation voltage signal have a fixed difference.

7. A display device comprising a display panel and the driving circuit of the display panel according to any one of claims 1-6.

8. A driving method applied to the driving circuit of the display panel according to any one of claims 1-6; the driving method comprising: receiving, by a control sub-circuit, display brightness level information of the display panel, and obtaining power signal information matched with the display brightness level information according to the display brightness level information; receiving, by a signal adjusting sub-circuit, a basic power signal, and adjusting the basic power signal into a target power signal matched with the display brightness level information according to the power signal information; generating, by a signal converting sub-circuit, a gate modulation voltage signal according to the target power signal.

9. The driving method according to claim 8, wherein The driving method further comprises: The display panel is matched with the power signal information of the display brightness level information stored in the storage sub-circuit; The control sub-circuit is used to acquire the power signal information matched with the display brightness level information to be displayed from the storage sub-circuit.

10. The driving method according to claim 9, wherein The driving method further comprises: When the display brightness level information to be displayed is not included in the plurality of display brightness level information, the calculation sub-circuit is used to calculate the power signal information matched with the display brightness level information to be displayed according to the power signal information matched with the two display brightness level information closest to the display brightness level information to be displayed among the plurality of display brightness level information by using a linear interpolation algorithm, and the value corresponding to the display brightness level information to be displayed is located between the values corresponding to the two closest display brightness level information; The signal adjustment sub-circuit is used to adjust the basic power signal to the target power signal matched with the display brightness level information to be displayed according to the calculated power signal information.

11. The driving method according to any one of claims 8 to 10, wherein The signal adjustment sub-circuit comprises a low-voltage linear voltage regulator, and the driving method specifically comprises: The low-voltage linear voltage regulator is used to receive the basic power signal and adjust the basic power signal to the target power signal matched with the display brightness level information to be displayed according to the power signal information.

12. The driving method according to any one of claims 8 to 10, wherein The driving method further comprises: The power management integrated sub-circuit is used to provide the basic power signal; The Gamma sub-circuit is used to generate the Gamma voltage signal according to the gate modulation power signal.

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