1. A driving circuit applied to a display panel, the display panel including a pixel unit and a data line, the driving circuit comprising:

a plurality of circuit units connected in series, each of the circuit units including a plurality of voltage-dividing resistors connected in parallel, the plurality of voltage-dividing resistors including a first resistor and a second resistor, a resistance value of the first resistor being smaller than a resistance value of the second resistor, the plurality of circuit units dividing a plurality of first reference voltages into a plurality of divided voltages corresponding to a plurality of gray scales, the divided voltages being supplied to the pixel unit through the data line; and the number of the first and second groups,

and the controller is used for selecting the first resistance of at least one selected circuit unit from the plurality of circuit units to be conducted according to the current frame gray scale of the data line, and selecting the second resistance of the selected circuit unit to be conducted when the pixel unit needs to be driven by a second reference voltage.

2. The driving circuit of claim 1, wherein when the number of the second resistors is plural, the controller is further configured to determine a target voltage dividing resistor from the plural second resistors of the selected circuit unit according to a gray scale voltage difference between a previous frame gray scale and a current frame gray scale of the data line, and select the target voltage dividing resistor to be turned on when the pixel unit needs to be driven by a second reference voltage.

3. The driving circuit of claim 2, wherein the controller is configured to determine the target voltage dividing resistor from the plurality of second resistors according to a voltage difference threshold level corresponding to the gray-scale voltage difference value.

4. The driving circuit as claimed in claim 2, wherein at least one first resistor of a previous circuit unit is turned on at the gray level of the previous frame, and the controller is configured to calculate the gray level voltage difference value according to the first resistor of the previous circuit unit and the first resistor of the selected circuit unit.

5. The driving circuit according to claim 2, wherein the resistance values of the plurality of second resistors differ by a preset threshold value and increase sequentially.

6. The driving circuit of claim 1, wherein when the number of the selected circuit units is plural, the controller is further configured to determine at least one target circuit unit from the plural selected circuit units according to a gray scale level difference between a last frame gray scale and a current frame gray scale of the data line, and select the second resistor of the target circuit unit to be turned on when the pixel unit needs to be driven by the second reference voltage.

7. The driving circuit of claim 1, wherein the controller is further configured to select the first resistor of the selected circuit unit to be turned on to drive the pixel unit by the divided voltage after the pixel unit is driven by the second reference voltage and the voltage in the pixel unit reaches the target pixel voltage value.

8. A driving method of a driving circuit is applied to a display panel, the display panel includes a pixel unit and a data line, the driving circuit includes a plurality of circuit units connected in series, each circuit unit includes a plurality of voltage-dividing resistors connected in parallel, the plurality of voltage-dividing resistors include a first resistor and a second resistor, a resistance of the first resistor is smaller than a resistance of the second resistor, and the driving method includes:

acquiring an overvoltage driving instruction, wherein the overvoltage driving instruction carries information that the pixel unit needs to be driven by overvoltage;

and responding to the overvoltage driving instruction, and switching the conducted voltage dividing resistor in the selected circuit unit under the current frame gray scale from the first resistor to the second resistor so as to drive the pixel unit by overvoltage.

9. The driving method according to claim 8, wherein the number of the second resistors is plural, and the step of switching the voltage dividing resistor turned on in the selected circuit unit at the current frame gray level from the first resistor to the second resistor includes:

calculating a gray scale voltage difference value between the previous frame gray scale and the current frame gray scale of the data line;

determining a target divider resistor from a plurality of second resistors of a selected circuit unit under the current frame gray scale according to the gray scale voltage difference value;

and switching the conducted voltage dividing resistor in the selected circuit unit from the first resistor to the target voltage dividing resistor.

10. The driving method according to claim 8, wherein the number of the selected circuit units is plural, and the step of switching the voltage dividing resistor turned on in the selected circuit unit at the current frame gray scale from the first resistor to the second resistor includes:

calculating a gray scale level difference value between the gray scale of the last frame and the gray scale of the current frame of the data line;

determining at least one target circuit unit from a plurality of selected circuit units under the current frame gray scale according to the gray scale level difference value;

and switching the conducted voltage division resistor in the target circuit unit from the first resistor to the second resistor.

Background

When the lcd panel displays a dynamic image, in order to avoid the phenomenon of image smear caused by the slow response speed of the liquid crystal of the lcd panel, a voltage higher than a target pixel voltage is usually applied to the pixel unit of the lcd panel when the lcd panel displays a frame of image, so that the pixel unit is driven by an Over-voltage (OD), thereby achieving the purpose of reducing the response time of the liquid crystal.

However, in the prior art, when performing the over-voltage driving on the pixel unit of the liquid crystal display panel, it is necessary to obtain the overdrive voltage value corresponding to the target pixel voltage of the pixel unit under the current frame by obtaining an OD lookup table stored in a Timing Controller (TCON) of the liquid crystal display panel.

However, in the display panel without a timing controller, the pixel units cannot be driven by overvoltage, so that the problem of image smear occurs when the display panel displays images.

Disclosure of Invention

The invention provides a driving circuit and a driving method of the driving circuit, which effectively solve the problem that picture smear occurs when a display panel is displayed because overvoltage driving cannot be carried out on pixel units of the display panel which is not designed with a time schedule controller.

In order to solve the above problem, the present invention provides a driving circuit applied to a display panel, the display panel including a pixel unit and a data line, the driving circuit including:

a plurality of circuit units connected in series, each of the circuit units including a plurality of voltage-dividing resistors connected in parallel, the plurality of voltage-dividing resistors including a first resistor and a second resistor, a resistance value of the first resistor being smaller than a resistance value of the second resistor, the plurality of circuit units dividing a plurality of first reference voltages into a plurality of divided voltages corresponding to a plurality of gray scales, the divided voltages being supplied to the pixel unit through the data line; and the number of the first and second groups,

and the controller is used for selecting the first resistance of at least one selected circuit unit from the plurality of circuit units to be conducted according to the current frame gray scale of the data line, and selecting the second resistance of the selected circuit unit to be conducted when the pixel unit needs to be driven by a second reference voltage.

Preferably, when the number of the second resistors is plural, the controller is further configured to determine a target voltage dividing resistor from the plural second resistors of the selected circuit unit according to a gray scale voltage difference between a last frame gray scale and a current frame gray scale of the data line, and select the target voltage dividing resistor to be turned on when the pixel unit needs to be driven by a second reference voltage.

Preferably, the controller is configured to determine the target voltage dividing resistor from the plurality of second resistors according to a voltage difference threshold level corresponding to the gray-scale voltage difference value.

Further preferably, at least one first resistor of the previous circuit unit is turned on at the gray level of the previous frame, and the controller is configured to calculate the gray level voltage difference value according to the first resistor of the previous circuit unit and the first resistor of the selected circuit unit.

Further preferably, the resistance values of the plurality of second resistors are sequentially increased by a difference of a preset threshold.

Preferably, when the number of the selected circuit units is multiple, the controller is further configured to determine at least one target circuit unit from the multiple selected circuit units according to a gray scale difference between a previous frame gray scale and a current frame gray scale of the data line, and select the second resistor of the target circuit unit to be turned on when the pixel unit needs to be driven by the second reference voltage.

Further preferably, the controller is further configured to select the first resistor of the selected circuit unit to be turned on after the pixel unit is driven by the second reference voltage and the voltage in the pixel unit reaches the target pixel voltage value, so that the pixel unit is driven by the standard component voltage.

In another aspect, the present invention further provides a driving method of a driving circuit, which is applied to a display panel, where the display panel includes a pixel unit and a data line, the driving circuit includes a plurality of circuit units connected in series, each circuit unit includes a plurality of voltage-dividing resistors connected in parallel, the plurality of voltage-dividing resistors include a first resistor and a second resistor, a resistance of the first resistor is smaller than a resistance of the second resistor, and the driving method includes:

acquiring an overvoltage driving instruction, wherein the overvoltage driving instruction carries information that the pixel unit needs to be driven by overvoltage;

and responding to the overvoltage driving instruction, and switching the conducted voltage dividing resistor in the selected circuit unit under the current frame gray scale from the first resistor to the second resistor so as to drive the pixel unit by overvoltage.

Further preferably, the number of the second resistors is plural, and the step of switching the voltage dividing resistor which is turned on in the selected circuit unit under the current frame gray scale from the first resistor to the second resistor includes:

calculating a gray scale voltage difference value between the previous frame gray scale and the current frame gray scale of the data line;

determining a target divider resistor from a plurality of second resistors of a selected circuit unit under the current frame gray scale according to the gray scale voltage difference value;

and switching the conducted voltage dividing resistor in the selected circuit unit from the first resistor to the target voltage dividing resistor.

Further preferably, the number of the selected circuit units is multiple, and the step of switching the voltage dividing resistor which is turned on in the selected circuit unit under the current frame gray scale from the first resistor to the second resistor includes:

calculating a gray scale level difference value between the gray scale of the last frame and the gray scale of the current frame of the data line;

determining at least one target circuit unit from a plurality of selected circuit units under the current frame gray scale according to the gray scale level difference value;

and switching the conducted voltage division resistor in the target circuit unit from the first resistor to the second resistor.

The invention has the beneficial effects that: the invention provides a driving circuit, which is applied to a display panel comprising pixel units and data lines, and comprises: the driving circuit comprises a plurality of circuit units and a controller, wherein each circuit unit comprises a plurality of divider resistors connected in parallel, the plurality of divider resistors comprise a first resistor and a second resistor, the resistance value of the first resistor is smaller than that of the second resistor, the plurality of circuit units divide a plurality of first reference voltages into a plurality of divided voltages corresponding to a plurality of gray scales, the divided voltages are provided for a pixel unit through a data line, the controller is used for selecting the first resistor of at least one selected circuit unit from the plurality of circuit units to be conducted according to the current gray scale of the data line, and selecting the second resistor of the selected circuit unit to be conducted when the pixel unit needs to be driven by a second reference voltage, the purpose that the pixel unit is driven by the second reference voltage is achieved by switching the divider resistor in the circuit unit.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments according to the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a driving circuit according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a driving circuit according to a second embodiment of the present invention.

Fig. 3 is a flow chart illustrating a driving method of a driving circuit according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Fig. 5 is a detailed structural diagram of a mobile terminal according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The invention aims at solving the problem that in the prior art, a display panel of a time schedule controller is not designed, and picture smear is generated when the display panel displays due to the fact that pixel units of the display panel cannot be subjected to overvoltage driving.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a driving circuit 10 according to a first embodiment of the present invention, the driving circuit 10 is applied to a display panel including data lines and pixel units, and components and relative positions of the components according to the first embodiment of the present invention can be seen from fig. 1.

As shown in fig. 1, the drive circuit 10 includes a plurality of circuit units (circuit unit a1 to circuit unit An) connected in series and a controller 11, and each component constituting the drive circuit 10 will be described in detail below.

Each circuit unit comprises a plurality of voltage division resistors connected in parallel, each voltage division resistor comprises a first resistor and a second resistor, and the resistance value of each first resistor is smaller than that of each second resistor. For example, taking the circuit unit a1 as an example, the circuit unit a1 includes a voltage dividing resistor R1_1 and a voltage dividing resistor R1_2 connected in parallel, where the voltage dividing resistor R1_1 is a first resistor of the circuit unit a1, the voltage dividing resistor R1_2 is a second resistor of the circuit unit a1, and a resistance of the voltage dividing resistor R1_1 is smaller than a resistance of the voltage dividing resistor R1_ 2.

The plurality of circuit units (circuit unit a1 to circuit unit An) divide the plurality of first reference voltages (Vstandard _1 to Vstandard _ m) into a plurality of divided voltages (Vgamma _1 to Vgamma _ N) corresponding to the plurality of gray scales (gray scale 1 to gray scale N), and then the divided voltages are supplied to the pixel units through the data lines on the display panel.

It should be noted that the first reference voltage is a voltage obtained by dividing the power voltage VDD through a basic GAMMA resistor network string.

The controller 11 selects a first resistor of at least one selected circuit unit from the plurality of circuit units to be turned on according to a current frame gray scale of the data line, and selects a second resistor of the selected circuit unit to be turned on when the pixel unit needs to be driven by a second reference voltage. For example, when the gray scale of the current frame on the data line of the display panel is gray scale 2, the controller turns on the first resistors of the circuit unit a1 and the circuit unit a2 (in this case, the circuit unit a1 and the circuit unit a2 are selected circuit units), that is, turns on the voltage dividing resistor R1_1 and the voltage dividing resistor R2_1, so that the driving circuit 10 outputs the divided voltage Vgamma _2 to the pixel units of the display panel, when the pixel units need to be driven by the second reference voltage to reduce the liquid crystal response time in order to avoid the image blur phenomenon of the display panel due to the slow response speed of the liquid crystal in the pixel units, the display panel sends the related command that the pixel units need to be driven by the second reference voltage to the driving circuit 10, and the driving circuit 10 turns on the second resistors of the circuit unit a1 and the circuit unit a2 in response to the command, the voltage dividing resistor R1_2 and the voltage dividing resistor R2_2 are turned on to enable the driving circuit 10 to output the second reference voltage to the pixel unit of the display panel, since the resistance of the voltage dividing resistor R1_1 is smaller than the resistance of the voltage dividing resistor R1_2, the resistance of the voltage dividing resistor R2_1 is smaller than the resistance of the voltage dividing resistor R2_2, and the voltage value of the divided voltage Vgamma _2 is smaller than the voltage value of the second reference voltage, at this time, the pixel unit is driven by the divided voltage Vgamma _2 and is converted into being driven by the second reference voltage.

Further, referring to fig. 2, fig. 2 is a schematic structural diagram of a driving circuit 20 according to a second embodiment of the present invention, the driving circuit 20 is applied to a display panel including data lines and pixel units, and components and relative positions of the components according to the second embodiment of the present invention can be seen from fig. 2.

As shown in fig. 2, the second embodiment has substantially the same structure as the first embodiment, in which the plurality of circuit units (including the circuit unit B1 through the circuit unit Bn) in the second embodiment have the same functions and arrangement positions as the plurality of circuit units (including the circuit unit a1 through the circuit unit An) in the first embodiment; the controller 21 in the second embodiment has the same function and the same setting position as the controller 11 in the first embodiment. The difference is that in the present embodiment, the number of the second resistors of each circuit unit is plural, for example, in the first embodiment, the second resistor of the circuit unit a1 is the voltage dividing resistor R1_2, and in the present embodiment, the second resistor of the circuit unit B1 is the voltage dividing resistor R1_2 and the voltage dividing resistor R1_ 3.

It should be noted that, in this embodiment, the controller determines a target voltage dividing resistor from the plurality of second resistors of the selected circuit unit according to a gray scale voltage difference between a previous frame gray scale and a current frame gray scale of the data line, and selects the target voltage dividing resistor to be turned on when the pixel unit needs to be driven by the second reference voltage. Next, the previous frame gray scale of the data line is gray scale 2, the current frame gray scale is gray scale 3, and the gray scale voltage difference between gray scale 2 and gray scale 3 is V1: when the pixel unit displays a previous frame and is driven by the divided voltage Vgamma _2, the circuit unit B1 and the circuit unit B2 are previous circuit units, and the first resistors (i.e., the voltage dividing resistor R1_1 and the voltage dividing resistor R2_1) are turned on; when the pixel unit displays the current frame and is driven by the divided voltage Vgamma _3, the circuit unit B1, the circuit unit B2 and the circuit unit B3 are selected circuit units, the first resistors (i.e., the voltage dividing resistor R1_1, the voltage dividing resistor R2_1 and the voltage dividing resistor R3_1) of which are turned on, and when the display panel sends an instruction related to the pixel unit needing to be driven by the second reference voltage to the driving circuit 20, the driving circuit determines a target voltage dividing resistor suitable for the gray scale voltage difference V1 from the plurality of second resistors of the selected circuit units according to the gray scale voltage difference V1 between the gray scale 2 and the gray scale 3 (e.g., determines the target voltage dividing resistor to be the voltage dividing resistor R1_3, the voltage dividing resistor R2_3 and the voltage dividing resistor R3_3), and then switches the turned on voltage dividing resistor from the voltage dividing resistor R1_1, the voltage dividing resistor R2_1 and the voltage dividing resistor R3_3 to the voltage dividing resistor R1_3, The voltage dividing resistor R2_3 and the voltage dividing resistor R3_3 enable the pixel unit to be driven by the divided voltage Vgamma _3 and converted into the second reference voltage.

Specifically, the gray-scale voltage difference V1 can be calculated according to the first resistance of the previous circuit unit (i.e., the voltage-dividing resistor R1_1 and the voltage-dividing resistor R2_1) and the first resistance of the selected circuit unit (i.e., the voltage-dividing resistor R1_1, the voltage-dividing resistor R2_1 and the voltage-dividing resistor R3_ 1).

It should be noted that the controller 21 may determine the target voltage dividing resistance from the plurality of second resistances according to the voltage difference threshold level corresponding to the gray-scale voltage difference value. For example, if the gray-scale voltage difference V1 between gray-scale 2 and gray-scale 3 corresponds to the voltage difference threshold level 1, the target voltage-dividing resistors are the voltage-dividing resistor R1_2, the voltage-dividing resistor R2_2 and the voltage-dividing resistor R3_ 2; if the gray-scale voltage difference V1 between gray-scale 2 and gray-scale 3 corresponds to the voltage difference threshold level 2, the target voltage-dividing resistors are the voltage-dividing resistor R1_3, the voltage-dividing resistor R2_3, and the voltage-dividing resistor R3_3, and so on. Furthermore, a lookup table comprising a mapping relation between a plurality of gray scale voltage difference values and a plurality of target voltage dividing resistors can be established, when the pixel unit needs to be driven by overvoltage, the lookup table is directly looked up, and the target voltage dividing resistors are selected to be switched on according to the lookup result.

Further, the resistance values of the second resistors of each circuit unit sequentially increase by a predetermined threshold, and taking the voltage dividing resistors of the circuit unit B1 as an example, the difference between the voltage dividing resistor R1_1 and the voltage dividing resistor R2_1 is R_XThe difference between the divider resistor R2_1 and the divider resistor R3_1 is also R_X。

It should be noted that, in order to reduce the power consumption of the display panel when the pixel units are driven, when the number of the selected circuit units is multiple (that is, the selected circuit units are multiple at all gray levels except for the gray level 1), the controller 21 determines at least one target circuit unit from the multiple selected circuit units according to the gray level difference between the gray level of the previous frame and the gray level of the current frame of the data line, and turns on the second resistor of the selected target circuit unit when the pixel units of the display panel need to be driven by the second reference voltage. For example, when the previous frame gray level of the data line is gray level 2 and the current frame gray level is gray level 3, the difference between the previous frame gray level and the current frame gray level is 1, and at this time, if the pixel unit needs to be driven by an over voltage, the controller determines a target circuit unit from the plurality of selected circuit units, that is, determines the circuit unit B1 as the target circuit unit from the circuit unit B1, the circuit unit B2 and the circuit unit B3, and turns on the second resistor of the selected circuit unit B1.

Further, the number of target circuit units corresponds to the number of gray scale level difference values, and the target circuit units in the circuit unit B1, the circuit unit B2 and the circuit unit B3 can be determined according to the gray scale voltage difference value V1 between gray scale 2 and gray scale 3.

It is easy to understand that, after the pixel unit is driven by the second reference voltage and the voltage in the pixel unit reaches its target pixel voltage value, the controller will select the first resistor of the selected circuit unit to be turned on, so that the pixel unit is driven by the standard partial voltage, and thus, the power consumption of the display panel when the pixel unit is driven can be reduced.

In an embodiment, the circuit unit is used as a voltage dividing unit in a GAMMA circuit; the first resistor is an original voltage dividing resistor; the second resistor is a voltage division resistor to be selected; the first reference voltage is a driving reference voltage; the second reference voltage is an overvoltage voltage; the divided voltage is a gamma voltage.

In contrast to the prior art, the first and second embodiments of the present invention provide a driving circuit 10 and a driving circuit 20, which are applied to a display panel including pixel units and data lines, the driving circuit including: the driving circuit comprises a plurality of circuit units and a controller, wherein each circuit unit comprises a plurality of divider resistors connected in parallel, the plurality of divider resistors comprise a first resistor and a second resistor, the resistance value of the first resistor is smaller than that of the second resistor, the plurality of circuit units divide a plurality of first reference voltages into a plurality of divided voltages corresponding to a plurality of gray scales, the divided voltages are provided for a pixel unit through a data line, the controller is used for selecting the first resistor of at least one selected circuit unit from the plurality of circuit units to be conducted according to the current gray scale of the data line, and selecting the second resistor of the selected circuit unit to be conducted when the pixel unit needs to be driven by a second reference voltage, the purpose that the pixel unit is driven by the second reference voltage is achieved by switching the divider resistor in the circuit unit.

Referring to fig. 3, fig. 3 is a flow chart illustrating a driving method of a driving circuit according to an embodiment of the present invention, the driving method is applied to the driving circuit 10 and the driving circuit 20, and the specific flow of the driving method may be as follows:

acquisition step S101: acquiring an overvoltage driving instruction, wherein the overvoltage driving instruction carries information that a pixel unit needs to be driven by overvoltage;

in response to step S102: and responding to an overvoltage driving instruction, and switching the conducted voltage dividing resistor in the selected circuit unit under the current frame gray scale from the first resistor to the second resistor so as to drive the pixel unit by overvoltage.

Further, when the number of the second resistors is plural, the responding step S102 may specifically include:

calculating a gray scale voltage difference value between the previous frame gray scale and the current frame gray scale of the data line;

determining a target voltage dividing resistor from a plurality of second resistors of the selected circuit unit under the current frame gray scale according to the gray scale voltage difference value;

the conducted voltage-dividing resistor in the selected circuit unit is switched from the first resistor to the target voltage-dividing resistor.

Further, when the number of the selected circuit units is plural, the responding step S102 may specifically include:

calculating a gray scale difference value between the gray scale of the last frame and the gray scale of the current frame of the data line;

determining at least one target circuit unit from a plurality of selected circuit units under the current frame gray scale according to the gray scale level difference value;

the voltage dividing resistor which is conducted in the target circuit unit is switched from the first resistor to the second resistor.

Different from the prior art, the invention provides a driving method of a driving circuit, which comprises the following steps: the driving method of the driving circuit provided by the invention has the advantages that as the second resistor with the resistance value higher than that of the first resistor is added in each circuit unit of the driving circuit, the purpose that the pixel unit is driven by the second reference voltage can be achieved by switching the divider resistors in the circuit units when the pixel unit needs to be driven by the second reference voltage.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, in which the driving circuit 10 and the driving circuit 20 are applied to the mobile terminal, the mobile terminal may be a smart phone or a tablet computer, and the components of the present invention and the relative position relationship of the components can be visually seen from the figure.

As shown in fig. 4, the mobile terminal 100 includes a processor 101, a memory 102. The processor 101 is electrically connected to the memory 102.

The processor 101 is a control center of the mobile terminal 100, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or loading an application program stored in the memory 102 and calling data stored in the memory 102, thereby performing overall monitoring of the mobile terminal.

Referring to fig. 5, fig. 5 is a detailed structure schematic diagram of a mobile terminal according to an embodiment of the present invention, where the mobile terminal may be a smart phone or a tablet computer, and components and relative positions of the components of the present invention can be visually seen from the diagram.

Fig. 5 is a block diagram illustrating a specific structure of the mobile terminal 100 according to an embodiment of the present invention. As shown in fig. 5, the mobile terminal 100 may include Radio Frequency (RF) circuitry 110, memory 120 including one or more computer-readable storage media, an input unit 130, a display unit 140, a sensor 150, audio circuitry 160, a transmission module 170 (e.g., Wireless Fidelity (WiFi), a Wireless Fidelity (wi-fi)), a processor 180 including one or more processing cores, and a power supply 190. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 5 is not intended to be limiting of mobile terminals and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The RF circuit 110 is used for receiving and transmitting electromagnetic waves, and performs interconversion between the electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices. The RF circuitry 110 may include various existing circuit components for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption/decryption chips, Subscriber Identity Module (SIM) cards, memory, and so forth. The RF circuitry 110 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices over a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. The Wireless network may use various Communication standards, protocols, and technologies, including, but not limited to, Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wi-Fi) (e.g., IEEE802.11 a, IEEE802.11b, IEEE802.11g, and/or IEEE802.11 n standards), Voice over Internet Protocol (VoIP), world wide Internet Protocol (Microwave Access), wimax, other suitable short message protocols, and may even include those protocols that have not yet been developed.

The memory 120 may be configured to store software programs and modules, such as corresponding program instructions in the above audio power amplifier control method, and the processor 180 executes various functional applications and data processing by operating the software programs and modules stored in the memory 120, that is, obtains the frequency of the information transmission signal transmitted by the mobile terminal 100. Generating interference signals, and the like. Memory 120 may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 120 may further include memory located remotely from the processor 180, which may be connected to the mobile terminal 100 through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input unit 130 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 130 may include a touch-sensitive surface 131 as well as other input devices 132. The touch-sensitive surface 131, also referred to as a touch display screen or a touch pad, may collect touch operations by a user on or near the touch-sensitive surface 131 (e.g., operations by a user on or near the touch-sensitive surface 131 using a finger, a stylus, or any other suitable object or attachment), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface 131 may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 180, and can receive and execute commands sent by the processor 180. Additionally, the touch-sensitive surface 131 may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch-sensitive surface 131, the input unit 130 may also include other input devices 132. In particular, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 140 may be used to display information input by or provided to a user and various graphic user interfaces of the mobile terminal 100, which may be configured by graphics, text, icons, video, and any combination thereof. The Display unit 140 may include a Display panel 141, and optionally, the Display panel 141 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch-sensitive surface 131 may cover the display panel 141, and when a touch operation is detected on or near the touch-sensitive surface 131, the touch operation is transmitted to the processor 180 to determine the type of the touch event, and then the processor 180 provides a corresponding visual output on the display panel 141 according to the type of the touch event. Although in the figures touch-sensitive surface 131 and display panel 141 are shown as two separate components to implement input and output functions, in some embodiments touch-sensitive surface 131 may be integrated with display panel 141 to implement input and output functions.

The mobile terminal 100 may also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 141 according to the brightness of ambient light, and a proximity sensor that may generate an interrupt when the folder is closed or closed. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured in the mobile terminal 100, detailed descriptions thereof are omitted.

Audio circuitry 160, speaker 161, and microphone 162 may provide an audio interface between a user and mobile terminal 100. The audio circuit 160 may transmit the electrical signal converted from the received audio data to the speaker 161, and convert the electrical signal into a sound signal for output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into an electric signal, converts the electric signal into audio data after being received by the audio circuit 160, and then outputs the audio data to the processor 180 for processing, and then to the RF circuit 110 to be transmitted to, for example, another terminal, or outputs the audio data to the memory 120 for further processing. The audio circuit 160 may also include an earbud jack to provide communication of a peripheral headset with the mobile terminal 100.

The mobile terminal 100, which can assist the user in receiving requests, transmitting information, etc., through the transmission module 170 (e.g., Wi-Fi module), provides the user with wireless broadband internet access. Although the transmission module 170 is shown in the drawings, it is understood that it does not belong to the essential constitution of the mobile terminal 100 and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 180 is a control center of the mobile terminal 100, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal 100 and processes data by operating or executing software programs and/or modules stored in the memory 120 and calling data stored in the memory 120, thereby integrally monitoring the mobile terminal. Optionally, processor 180 may include one or more processing cores; in some embodiments, the processor 180 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 180.

The mobile terminal 100 may also include a power supply 190 (e.g., a battery) for powering the various components, which may be logically coupled to the processor 180 via a power management system that may be used to manage charging, discharging, and power consumption management functions in some embodiments. The power supply 190 may also include any component including one or more of a dc or ac power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Although not shown, the mobile terminal 100 further includes a camera (e.g., a front camera, a rear camera, etc.), a bluetooth module, a flashlight, etc., which will not be described herein. Specifically, in the present embodiment, the display unit of the mobile terminal 100 is a touch screen display.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present invention.

In summary, although the preferred embodiments of the present invention have been described above, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.