CN111192556A

CN111192556A - Method and device for controlling power supply chip to supply voltage

Info

Publication number: CN111192556A
Application number: CN201911260074.8A
Authority: CN
Inventors: 黄松; 解峰; 安奇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-05-22
Anticipated expiration: 2039-12-10
Also published as: CN111192556B; WO2021114898A1

Abstract

The present application provides a method and device for controlling a power supply chip to supply voltage. After the driver chip analyzes the required voltage of the display module, it sends the first signal to the control device. The control device determines the demanded voltage corresponding to the first signal according to the truth table of the driving chip, and then determines the second signal corresponding to the demanded voltage in the truth table of the power supply chip, and sends the second signal to the power supply chip. The power chip can know the required voltage corresponding to the second signal according to the truth table of the power chip, so as to provide the display module with the required voltage corresponding to the second signal, which can avoid the risk of the power chip providing mismatched required voltage to the display module. .

Description

Method and device for controlling power supply chip to supply voltage

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to a method, an apparatus, a circuit system, and a terminal device for controlling a power chip to provide a voltage.

Background

With the development of display technology, the application of active matrix lighting diode (AMOLED) is becoming more and more widespread. The AMOLED is powered by a Power Management Integrated Circuit (PMIC) to emit light. Currently, the output voltage and regulation of the PMIC are completely controlled by a Display Driver Integrated Circuit (DDIC) on the module. Generally, an Application Processor (AP) provides picture information and brightness information of a display screen to a DDIC through an MIPI signal. The DDIC controls the PMIC output voltage according to the picture information and the brightness information.

However, the DDIC and PMIC are typically provided by different manufacturers, and their internal control logic is not perfectly matched. Therefore, the voltage output by the DDIC controlling PMIC may not be the actual required voltage of the display panel, resulting in the mismatch between the output voltage of the PMIC and the actual required voltage of the display panel, and the control effect is poor.

For example, if the voltage provided by the PMIC is lower than the required voltage of the display panel, the display panel may not reach the set brightness. Alternatively, the voltage provided by the PMIC is greater than the required voltage of the display panel, which may result in the display panel performance being impaired.

Disclosure of Invention

The application provides a method, a device, a circuit system and a terminal device for controlling a power supply chip to provide voltage, which are applied to the terminal device comprising a display module, and can avoid the risk that the voltage provided by the power supply chip to the display module of the terminal device is not matched with the actual required voltage of the display module.

In a first aspect, the present application provides a method for controlling a power chip to provide a voltage, the method including: the control device receives a first signal from the driving chip; and outputting a second signal to a power supply chip according to first information, second information and the first signal, wherein the first information is used for indicating a first corresponding relation between an output signal of the driving chip and a required voltage of the display module, and the second information is used for indicating a second corresponding relation between the output signal of the power supply chip and the required voltage of the display module.

In the technical scheme of this application, after driver chip has analyzed out the demand voltage of display module assembly, according to the first information of saving, confirm the first signal that the demand voltage of display module assembly corresponds. The driving chip sends a first signal to the control device. Because the control device stores the first information and the second information at the same time, the control device can determine the required voltage of the display module analyzed by the driving chip according to the first information and the first signal. And according to the second information, the control device determines a second signal corresponding to the required voltage of the display module. Further, the control device transmits a second signal to the power supply chip. The power supply chip receives the second signal, and according to the stored second information, the required voltage of the display module corresponding to the second signal can be determined.

Through this kind of mode, even the output signal that driver chip and power chip saved respectively and the demand voltage's of display module corresponding relation inconsistent (also, mismatch), power chip also can provide accurate demand voltage to display module, has avoided power chip to the risk of the unmatched voltage of display module output.

It should be noted that the first information is used to indicate a first corresponding relationship between the output signal of the driving chip and the required voltage of the display module, or the first information is used to indicate a first corresponding relationship between the output signal of the driving chip and the required voltage of the display module.

Optionally, when the output signal of the driving chip is a pulse signal, the information of the output signal may specifically be the number of the pulse signals. At this time, the first corresponding relationship is specifically a corresponding relationship between the number of the pulse signals and the required voltage of the display module. When the output signal of the driving chip is a signal including a character string, the information of the output signal may specifically be the character string included in the output signal. At this time, the first corresponding relationship is a corresponding relationship between a character string included in the output signal and a required voltage of the display module.

The second information is also similar. Or the second information is used for indicating a second corresponding relation between the information of the output signal of the power supply chip and the required voltage of the display module.

Optionally, when the output signal of the power supply chip is a pulse signal, the information of the output signal may specifically be the number of the pulse signals. At this time, the second corresponding relationship is specifically a corresponding relationship between the number of the pulse signals and the required voltage of the display module. When the output signal of the power supply chip is a signal including a character string, the information of the output signal may specifically be the character string included in the output signal. At this time, the second corresponding relationship is specifically a corresponding relationship between a character string included in the output signal and a required voltage of the display module.

With reference to the first aspect, in certain implementation manners of the first aspect, the first information is specifically used to indicate the first corresponding relationship between the number of pulse signals output by the driving chip and the required voltage of the display module, and the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power chip and the required voltage of the display module.

The corresponding relation between the number of the pulse signals and the required voltage of the display module is adopted, the power supply chip is controlled to output the corresponding required voltage to the display module, and the time sequence control is simple.

With reference to the first aspect, in some implementations of the first aspect, the receiving a first signal from a driver chip includes: receiving a first number of pulse signals from the driver chip; the first information, the second information and the first signal output a second signal to a power chip, including: and outputting a second number of pulse signals to the power supply chip according to the first corresponding relation, the second corresponding relation and the first number.

With reference to the first aspect, in some implementation manners of the first aspect, the outputting a second number of pulse signals to the power supply chip according to the first corresponding relationship, the second corresponding relationship, and the first number includes: determining a first required voltage of the display modules corresponding to the first quantity according to the first corresponding relation and the first quantity; determining a second quantity corresponding to the first demand voltage according to the second corresponding relation and the first demand voltage; and outputting the second number of pulse signals to the power supply chip.

With reference to the first aspect, in some implementations of the first aspect, before the receiving the first signal from the driver chip, the method further includes: and sending an MIPI signal to the driving chip, wherein the MIPI signal contains brightness information of a display screen, the first signal is determined according to the brightness information, and the display module comprises the display screen.

In addition, the MIPI signal may also include picture information of the display screen.

In a second aspect, the present application provides a method for controlling a power chip to provide a voltage, which is applied to a terminal device including a display module, and the method includes: determining the required voltage of the display module; and outputting a first signal to a control device according to first information and the required voltage of the display module, wherein the first information is used for indicating a first corresponding relation between the output signal of the driving chip and the required voltage of the display module.

With reference to the second aspect, in certain implementation manners of the second aspect, the first information is specifically used to indicate a first corresponding relationship between the number of pulse signals output by the driving chip and a required voltage of the display module, where the determining the required voltage of the display module includes: determining a first required voltage of the display module; according to first information and the required voltage of display module assembly, to controlling means output first signal, include: determining a first quantity corresponding to the first demand voltage according to the first corresponding relation and the first demand voltage; outputting the first number of pulse signals to the control device.

In a third aspect, the present application provides a method for controlling a power chip to provide a voltage, which is applied to a terminal device including a display module, the method including: receiving a second signal from the control device; and outputting the required voltage of the display screen according to second information and the second signal, wherein the second information is used for indicating a second corresponding relation between the output signal of the power supply chip and the required voltage of the display module.

With reference to the third aspect, in certain implementation manners of the third aspect, the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power supply chip and the required voltage of the display module, where the receiving the second signal from the control device includes: receiving a second number of pulse signals from the control device; the outputting the required voltage of the display screen according to the second information and the second signal includes: determining a first required voltage of the display modules corresponding to the second quantity according to the second corresponding relation and the second quantity; and outputting the first required voltage to a display module.

In a fourth aspect, the present application provides a method for controlling a power chip to provide a voltage, which is applied to a terminal device including a control device, a power chip, a driving chip, and a display module, and the method includes:

the control device outputs a Mobile Industry Processor Interface (MIPI) signal to the driving chip;

the driving chip receives the MIPI signal from the control device and determines the required voltage of the display module according to the MIPI signal;

the driving chip outputs a first signal to the control device according to first information and the required voltage of the display module, wherein the first information is used for indicating a first corresponding relation between the output signal of the driving chip and the required voltage of the display module;

the control device receives the first signal from the driving chip and outputs a second signal to the power supply chip according to the first signal, the first information and the second information, wherein the second information is used for indicating a second corresponding relation between the output signal of the power supply chip and the required voltage of the display module;

and the power supply chip receives the second signal from the control device and outputs the required voltage of the display module according to the second signal and the second information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first information is specifically used to indicate the first corresponding relationship between the number of pulse signals output by the driving chip and the required voltage of the display module, and the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power chip and the required voltage of the display module, where,

the driving chip receives the MIPI signal from the control device and determines the required voltage of the display module according to the MIPI signal, and the driving chip comprises:

the driving chip receives the MIPI signal from the control device and determines a first required voltage of the display module according to the MIPI signal;

the driving chip outputs a first signal to the control device according to the first information and the required voltage of the display module, and the driving chip comprises:

the driving chip determines a first quantity corresponding to the first demand voltage according to the first corresponding relation and the first demand voltage, and outputs pulse signals of the first quantity to the control device;

the control device receives the first signal from the driving chip and outputs a second signal to the power supply chip according to the first signal, the first information and the second information, and the control device includes:

the control device receives the first number of pulse signals from the driving chip and outputs a second number of pulse signals to the power supply chip according to the first number, the first corresponding relation and the second corresponding relation, wherein the first corresponding relation indicates that the first number corresponds to the first required voltage, and the second corresponding relation indicates that the first required voltage corresponds to the second number;

the power chip receives the second signal from the control device, and outputs the required voltage of the display module according to the second signal and the second information, and the method comprises the following steps:

and the power supply chip receives the pulses of the second quantity from the control device and outputs the first required voltage to the display module according to the second quantity and the second corresponding relation.

In a fifth aspect, the present application provides a control device having the functionality to implement the method of the first aspect or any possible implementation thereof. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions

In a sixth aspect, the present application provides a drive device having the functionality to implement the method of the first aspect or any possible implementation thereof. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions.

In a seventh aspect, the present application provides a power supply apparatus having the functionality to implement the method of the first aspect or any possible implementation thereof. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions.

In an eighth aspect, the present application provides a circuit system for providing a required voltage to a display module of a terminal device, the system comprising the control device of the fifth aspect, the driving device of the sixth aspect and the power supply device of the seventh aspect.

In a ninth aspect, the present application provides a terminal device comprising the circuitry of the eighth aspect.

In a tenth aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any possible implementation thereof.

In an eleventh aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of the second aspect or any possible implementation thereof.

In a twelfth aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of the third aspect or any possible implementation thereof.

In a thirteenth aspect, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of the fourth aspect or any possible implementation thereof.

In a fourteenth aspect, the present application provides a chip comprising a signal input interface, a signal output interface, and a processor. The processor is configured to read and execute the computer program stored in the memory, and control the signal input interface to receive the signal and control the signal output interface to output the signal, so as to execute the method in the first aspect or any possible implementation manner thereof.

Optionally, the chip further comprises a memory, and the memory and the processor are connected with the memory through a circuit or a wire.

Alternatively, the processor may be a processing circuit.

In a fifteenth aspect, the present application provides a chip comprising a signal input interface, a signal output interface, and a processor. The processor is configured to read and execute the computer program stored in the memory, and control the signal input interface to receive the signal and control the signal output interface to output the signal, so as to execute the method of the second aspect or any possible implementation manner thereof.

Alternatively, the chip may be a system on chip (SoC), a baseband processor or an Application Processor (AP), and the like.

In a sixteenth aspect, the present application provides a chip comprising a signal input interface, a signal output interface, and a processor. The processor is configured to read and execute the computer program stored in the memory, and control the signal input interface to receive the signal and control the signal output interface to output the signal, so as to execute the method of the third aspect or any possible implementation manner thereof.

Alternatively, the chip may be a DDIC.

In a seventeenth aspect, the present application provides a circuit system including a controller, a power chip, and a driving chip. The circuitry is configured to perform the method of the fourth aspect or any possible implementation manner thereof to provide a required voltage to a display module of a terminal device.

Optionally, the chip may be a PMIC.

Alternatively, the signal input interface and/or the signal output interface may be interface circuits.

In an eighteenth aspect, the present application provides a terminal device comprising the circuitry as described in the eighteenth aspect.

In a nineteenth aspect, the present application provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method of the first aspect or any possible implementation thereof.

In a twentieth aspect, the present application provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method of the second aspect or any possible implementation thereof.

In a twenty-first aspect, the present application provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method of the third aspect or any possible implementation thereof.

In a twenty-second aspect, the present application provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method of the fourth aspect or any possible implementation thereof.

Drawings

Fig. 1 is a schematic structural diagram of a terminal device 100 suitable for use in an embodiment of the present application.

Fig. 2 is another schematic structural diagram of a terminal device 100 suitable for use in the embodiment of the present application.

Fig. 3 is a schematic flow chart of a method for controlling a power supply chip to supply voltage provided by the present application.

Fig. 4 is a schematic diagram of a method for controlling a power supply chip to supply voltage according to the present application.

Fig. 5 is an example of a method for controlling a power supply chip to supply voltage provided by the present application.

Fig. 6 is another example of a method for controlling a power supply chip to supply voltage provided by the present application.

Fig. 7 is a schematic block diagram of a control device 700 provided herein.

Fig. 8 is a schematic block diagram of a driving apparatus 800 provided herein.

Fig. 9 is a schematic block diagram of a power supply apparatus 900 provided herein.

Fig. 10 is a schematic configuration diagram of the control device 10 provided in the present application.

Fig. 11 is a schematic configuration diagram of the driving device 20 provided in the present application.

Fig. 12 is a schematic configuration diagram of the power supply device 30 provided in the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

First, a structure of a terminal device applicable to an embodiment of the present application is described with reference to fig. 1 and 2.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a terminal device 100 suitable for use in an embodiment of the present application. As shown in fig. 1, the terminal device 100 may include a control device 110, a power chip 120, a display module 130, a driving chip 140, and an organic light-emitting diode (OLED) 150.

Alternatively, the driving chip 140 and the OLED 150 may be disposed at the display module 130. The OLED 150 is a light emitting device on the display module 130, and is also called a display screen.

In addition, the terminal device 100 may further include a main printed circuit board (main PCB). The control device 110 and the power supply chip 120 may be disposed on the main PCB.

Optionally, in some implementations, the power chip 120 may be specifically a Power Management Integrated Circuit (PMIC). The driving chip 140 may be a Display Driver Integrated Circuit (DDIC).

Alternatively, the OLED 150 may be an active-matrix organic light-emitting diode (AMOLED) or a passive-matrix organic light-emitting diode (PMOLED), which is not limited in this application.

Alternatively, the control device 110 may be a circuit system, which may be a chip or an integrated circuit, etc.

The control device 110 may transmit signals to the power chip 120, the display module 130, the driving chip 140, and the OLED 150 through a control bit single line (wire) interface or other communication interfaces. The other communication interface may include, for example, an inter-integrated circuit (I2C) interface. Specific signal interaction can be seen in the detailed description of the embodiments below.

Fig. 2 shows a schematic block diagram of another terminal device 100 suitable for use in the embodiments of the present application.

Referring to fig. 2, fig. 2 is another schematic structural diagram of a terminal device 100 suitable for use in the embodiment of the present application. As shown in fig. 2, the terminal device 100 may include a power chip 120, a display module 130, a driving chip 140, an OLED 150, and an Application Processor (AP) 160.

It can be seen that, unlike the structure shown in fig. 1, the terminal device 100 adds the AP 160 on the basis of the devices including the power chip 120, the display module 130, the driving chip 140 and the OLED 150. Meanwhile, the control device 110 is not essential. The description of other devices in fig. 2 can be referred to in fig. 1, and will not be repeated.

In the embodiment of the present application, the structures of the terminal devices shown in fig. 1 and fig. 2 are all applicable, and refer to the detailed description below.

As is well known, the power chip 130 on the terminal device provides a proper voltage to the display module to ensure the normal operation of the display module 140 and to achieve the corresponding brightness of the OLED 150.

The method for controlling the power supply chip to supply voltage provided by the present application is described below with reference to schematic structure diagrams of the terminal device shown in fig. 1-2.

Referring to fig. 3, fig. 3 is a schematic flow chart of a method for controlling a power supply chip to supply voltage provided by the present application.

310. The driving chip determines the required voltage of a display module of the terminal device and outputs a first signal to the control device according to the first information and the required voltage of the display module.

In one implementation, the driving chip may receive an MIPI signal from the control device, where the MIPI signal includes picture information and brightness information of the display screen.

The driving chip can analyze the required voltage of the display module according to the brightness information of the display screen. Further, according to the stored first information, the driving chip determines an output signal of the driving chip corresponding to the required voltage of the display module.

The first information is used for indicating the corresponding relation between the output signal of the driving chip and the required voltage of the display module. In order to distinguish from the correspondence between the output signal of the power supply chip and the required voltage of the display module, which will appear hereinafter, the correspondence indicated by the first information is referred to as a first correspondence.

In one possible implementation, the first information may be a truth table of a control bit single line of the driver chip. Wherein, the control bit single line can be called as a sweep. The truth table for the control bit single line may also be referred to as the switch table.

Specifically, the switch table records a first corresponding relation between the number of pulse signals output by the driving chip and the required voltage of the display module.

In other words, given a required voltage, the driving chip can determine the number of pulse signals uniquely corresponding to the required voltage according to the switch table. That is, the first corresponding relationship records the corresponding relationship between the number of the pulse signals output by the driving chip and the required voltage of the display module.

Therefore, after the driving chip determines the required voltage of the display module according to the MIPI signal received from the control device, the quantity of the pulse signals corresponding to the required voltage of the display module can be determined according to the switch table.

For example, the switch table of the driver chip can be as shown in table 1.

TABLE 1

It can be seen that the switch table includes 3 voltages, AVDD, ELVSS, and ELVDD. AVDD is a required voltage of the driving chip, and ELVSS and ELVDD are required voltages of the display screen.

Since the required voltage of the display module includes the required voltage of the DDIC and the required voltage of the display screen, the required voltage of the display module may refer to any one or more of AVDD, ELVSS, and ELVDD.

In this implementation, the first signal in step 310 may specifically refer to a certain number of pulse signals.

In addition, as can be seen from table 1, if ELVSS needs to be adjusted, the number of pulse signals output by the driver chip is between 1 and 51. Each quantity corresponds to a value of ELVSS. If AVDD needs to be adjusted, the number of pulse signals output by the driving chip is 52-79, and each number corresponds to the value of one AVDD. If the ELVDD needs to be adjusted, the number of the pulse signals output by the driving chip is 84-90, and each number corresponds to the value of one ELVDD.

The values of ELVSS, AVDD, and ELVDD corresponding to "0/no pulse" indicate default values of the voltages after the driving chip is enabled.

In another possible implementation manner, the first information may be a corresponding relationship between signals of other control interfaces except the control bit line interface and a required voltage of the display module.

Optionally, the other control interface may include an inter-integrated circuit (I2C) interface. When the control device controls the output voltage of the power supply chip through the I2C interface, signals other than pulse signals, such as a signal containing a character string, are transmitted on the I2C interface. At this time, the first information may specifically be a corresponding relationship between the character string and a required voltage of the display module.

Similar to the truth table of the control bit single line, after the power chip analyzes the required voltage of the display module according to the brightness information of the display screen, the character string corresponding to the required voltage of the display module can be determined according to the corresponding relation between the character string and the required voltage of the display module. For example, the required voltage of the display module corresponding to the character string "0 x 12" is-5.5V, and the required voltage of the display module corresponding to the character string "0 x 13" is-5.4V.

In this implementation, the signal sent by the driver chip to the control device and containing the character string is the first signal described in step 310.

Accordingly, the control device receives the first signal from the driver chip.

320. The control device outputs a second signal to the power supply chip according to the first information, the second information and the first signal.

Wherein the first information is as described above.

The second information is used for indicating a second corresponding relation between the output signal of the power supply chip and the required voltage of the display module.

In one implementation, the second information may be a control bit single line truth table of a power chip or a truth table of other communication interfaces. The switch table of the power supply chip can be as shown in table 2.

TABLE 2

Comparing table 1 and table 2, it can be seen that the same values of the same voltage in table 1 and table 2 may correspond to different numbers of pulse signals in table 1 and table 2. The inconsistency is a mismatch between the switch table of the driver chip and the switch table of the power supply chip.

For example, when ELVSS is-5.3V, the number of pulses corresponding to-5.3V is 11 in table 1, and the number of pulses corresponding to-5.3V is 8 in table 2.

According to the existing process, the voltage regulation and function adjustment of the PMIC are completely controlled by the DDIC on the display module. The AP sends the picture information and the brightness information of the display screen to the DDIC through the MIPI signal, but the AP does not directly participate in the control process of the PMIC. After the DDIC analyzes the required voltage of the display module according to the MIPI signal, the PMIC is controlled to output corresponding voltage to the display module through the pulse signal. That is, the power chip provides voltage to the display module under the control of the driving chip. This means that if the driver chip calculates ELVSS of-5.3V, the driver chip queries the pulse table to find that ELVSS of-5.3V corresponds to 11 pulse signals. Therefore, the driving chip outputs 11 pulse signals to the power chip. However, for the power chip, the power chip receives 11 pulse signals, and by querying the pulse table stored in the power chip, the value of ELVSS corresponding to the 11 pulse signals is not-5.3V, but-5.0V. Therefore, the power supply chip can output-5.0V to the display module, which is obviously smaller than the actual required voltage of the display module, so that the display screen cannot reach the set brightness.

Here, the actual required voltage of the display module is the required voltage of the display module analyzed by the driving chip according to the brightness information included in the MIPI signal received from the control device.

However, DDCI and PMIC are usually manufactured by different manufacturers, and it is not possible to ensure that the thread tables on DDCI and PMIC are perfectly matched before shipment. When the password tables of the DDIC and the PMIC are not completely matched, the PMIC needs to be modified or One Time Password (OTP) of the DDIC needs to be rewritten, and the modification time is long.

In the application, after the driving chip analyzes the actual required voltage of the display module, the driving chip does not directly output the pulse signals to the power chip, but outputs the pulse signals of the first quantity corresponding to the actual required voltage to the control device by contrasting the switch table of the driving chip. The control device controls the power supply chip to provide the actual required voltage for the display module group according to the switch table of the power supply chip.

Specifically, according to the first signal and the first information, the control device may determine the required voltage of the display module analyzed by the driving chip. That is, according to the first information, the control device determines a voltage corresponding to the first signal, where the voltage is an actual required voltage of the display module. Furthermore, the control information determines a second signal corresponding to the required voltage of the display module in the second information, so that the first signal of the driving chip is transcoded into the second signal of the power supply chip, and the second signal is output to the power supply chip.

Optionally, before step 310, the control device 110 sends a MIPI signal to the driver chip, where the MIPI signal includes picture information and brightness information of the display screen. Next, as shown in step 310, after the driver chip analyzes the required voltage of the display module according to the brightness information of the display screen, the driver chip sends the first signal to the control device 110.

The control device 110 receives the first signal, and sends a second signal to the power chip according to the first signal and the stored first information and second information.

Accordingly, the power chip receives the second signal from the control device 110.

330. And the power supply chip outputs the required voltage of the display module according to the second information and the second signal.

Wherein the second information and the description of the second signal can be referred to in step 320.

As can be seen from

steps

310 and 320, the driver chip stores the first information and the power chip stores the second information. The control device stores the first information and the second information.

And the power supply chip determines the voltage corresponding to the second signal according to the second information, wherein the voltage is the voltage which needs to be output to the display module by the power supply chip.

It can be understood that the first signal corresponding to the required voltage of the display module recorded in the first information of the driver chip and the second signal corresponding to the required voltage recorded in the second information of the power supply chip may not be consistent, but through transcoding by the control device, the power supply chip may determine the actual required voltage of the display module, so as to output an accurate voltage to the display module.

In the technical scheme of the application, the control device acquires a first corresponding relation (namely, first information) between the output signal of the driving chip and the required voltage of the display module, and a second corresponding relation (namely, second information) between the output signal of the power chip and the required voltage of the display module. The control device sends an MIPI signal containing picture information and brightness information of the display screen to the driving chip, and after the driving chip analyzes the required voltage of the display module according to the brightness information of the display screen, the driving chip determines a first signal corresponding to the required voltage of the display module according to the stored first information. The driving chip sends a first signal to the control device. Because the control device obtains the first information and the second information at the same time, the control device can determine the required voltage of the display module analyzed by the driving chip according to the first information and the first signal. And according to the second information, the control device determines a second signal corresponding to the required voltage of the display module. Further, the control device transmits a second signal to the power supply chip. The power chip receives the second signal, and according to the second information of saving, can determine the demand voltage of the display module assembly that the second signal corresponds to power chip can provide accurate demand voltage to display module assembly. Therefore, the control device realizes the matching of the output signals of the DDIC and the PMIC and the required voltage of the display module through transcoding.

In contrast, in the application, the control device completes the process of transcoding the first signal of the driving chip into the second signal of the power chip according to the first information and the second information, and then directly controls the power chip to output the required voltage of the display module. Through this kind of mode, even the output signal that driver chip and power chip saved respectively is inconsistent with the corresponding relation of the demand voltage of display module assembly, power chip also can provide accurate demand voltage to display module assembly, has avoided power chip to the risk of the unmatched voltage of display module assembly output.

The above description of fig. 3 is made by taking the configuration of the terminal device shown in fig. 1 as an example. In another configuration shown in fig. 2, the control device in the above embodiment may be replaced with an AP. In other words, the control device in the embodiment of the present application may be another chip or processing circuit besides the AP, or may also be an AP in the terminal device, which is not limited herein.

Alternatively, when the control device is an AP in a terminal device, some embodiments of the present application may refer to fig. 4 to 6.

Referring to fig. 4, fig. 4 is a schematic diagram of a method for controlling a power supply chip to supply a voltage according to the present application. The DDIC stores a control bit single-line truth table of the DDIC, and the AP stores a control bit single-line truth table of the DDIC and a control bit single-line truth table of the PMIC. The PMIC stores a truth table of control bit units of the PMIC.

After the DDIC analyzes the required voltage of the display module according to the picture information and the brightness information of the display screen, the DDIC determines the number (i.e., the first number) of pulses corresponding to the required voltage by referring to the control bit single-line truth table of the DDIC, so as to send the first number of pulses to the AP. The AP determines a number (i.e., a second number) of pulses of the desired voltage in the truth table of the PMIC based on the control bit single line truth table of the DDIC and the control bit single line truth table of the PMIC, thereby outputting the second number of pulses to the PMIC. The PMIC determines a voltage corresponding to the required voltage in a control bit single-line truth table of the PMIC according to the second number of pulses and outputs the voltage. Specifically, the PMIC may include one control port and 3 power ports. Wherein the control port, e.g. port 1, is adapted to receive a control signal, e.g. said second number of pulses, from the AP. The 3 power supply ports are respectively used for outputting AVDD, ELVDD, and ELVSS, such as port 2, port 3, and port 4.

For example, the DDIC analyzes that the required voltage of the display module is-5.2V, and in the wave table of the DDIC, the-5.2V corresponds to 12 pulses. Thus, DDIC outputs 12 pulses to the AP. And the AP determines that the voltage corresponding to the 12 pulses is-5.2V according to the switch table of the DDIC. According to the switch table of the PMIC, 9 pulses correspond to-5.2V, so that the AP outputs 9 pulses to the PMIC. The PMIC determines that the voltage corresponding to the 9 pulses is-5.2V according to the switch table of the PMIC, so that-5.2V is output to the display module. Among them, AVDD, ELVDD, and ELVSS refer to the description of table 1.

The technical solution of the present application is illustrated below with reference to fig. 5 and 6.

Referring to fig. 5, fig. 6 is another example of a method for controlling a power supply chip to supply a voltage provided by the present application.

510. The AP sends an MIPI signal to the DDIC. The MIPI signal comprises picture information and brightness information of a display screen.

Accordingly, the DDIC receives the MIPI signal containing the picture information and the luminance information from the AP.

520. And the DDIC analyzes the first required voltage of the display module according to the brightness information, and sends a first number of pulse signals to the AP according to the spiral table of the DDIC.

Here, in the switch table of the DDIC, the number of pulse signals corresponding to the first required voltage is referred to as a first number.

Accordingly, the AP receives a first number of pulse signals from the DDIC.

530. And the AP outputs a second number of pulse signals to the PMIC according to the first number, the DDIC switch table and the PMIC switch table.

Specifically, the AP determines, from the pulse signals of the first number received by the DDIC, the first required voltage corresponding to the first number in the switch table of the DDIC, that is, the required voltage of the display module. And then according to the switch table of the PMIC, the AP determines the second quantity of the first demand voltage corresponding to the switch table of the PMIC. Further, the AP outputs a second number of pulse signals to the PMIC.

Accordingly, the PMIC receives a second number of pulse signals from the AP.

540. The PMIC outputs a first required voltage to the display module according to the second quantity and the switch table of the PMIC.

In contrast, in the conventional scheme in which the DDIC directly controls the PMIC to provide voltage to the display module, after analyzing a required voltage (e.g., a first required voltage) of the display module according to the MIPI signal including the picture information and the luminance information received from the AP, the DDIC determines that the first required voltage of the display module corresponds to the first number of pulse signals according to the saved wave table of the DDIC, so as to output the first number of pulse signals to the PMIC. The PMIC determines the required voltage (for example, a second required voltage) of the display module corresponding to the pulse signals of the first number according to the pulse signals of the first number and the saved fan table of the PMIC, and provides the second required voltage for the display module. Because the switch tables of the DDIC and the PMIC are possibly not matched, the same required voltage of the display module corresponds to pulse signals with different quantities in the switch tables of the DDIC and the PMIC. Therefore, the PMIC determines that the second required voltage of the display module corresponding to the first number may not be the actual required voltage of the display module analyzed by the DDIC, that is, the first required voltage, according to the first number and the switch table of the PMIC. Therefore, in the conventional process, the PMIC may provide an inappropriate voltage to the display module. For example, the voltage is too small to reach the set luminance.

As described above, in another implementation, the control interface of the AP does not use a switch interface, but uses another communication interface, and the following description takes an I2C interface as an example.

In this implementation, the truth table of the DDIC may store the correspondence between the required voltage of the display module and the character string. The truth table of the PMIC stores the corresponding relation between the required voltage of the display module and the character string. The other process is similar to the above-described process in which the AP controls the PMIC to provide the required voltage to the display module through the switch interface, and is described below with reference to fig. 7.

Referring to fig. 6, fig. 6 is another example of a method for controlling a power supply chip to supply a voltage provided by the present application.

610. And the AP sends the picture information and the brightness information of the display screen to the DDIC through the MIPI signal.

620. And the DDIC analyzes the first required voltage of the display module according to the brightness information of the display screen. Further, according to the first requirement voltage of the display module and the truth table of the DDIC, the DDIC can determine that the first requirement voltage of the display module corresponds to the character string 1.

630. DDIC sends a signal containing string 1 to the AP.

Accordingly, the AP receives the signal containing string 1 from DDIC.

640. The AP determines a first required voltage corresponding to the character string 1 in the truth table of the DDIC according to the truth table of the DDIC. Further, the AP determines a string 2 corresponding to the first desired voltage in the truth table of the PMIC.

650. The AP outputs a signal including a character string 2 to the PMIC.

Accordingly, the PMIC receives the signal containing string 2 from the AP.

660. The PMIC determines a required voltage of a display module corresponding to the character string 2 in a truth table of the PMIC, namely a first required voltage.

670. The PMIC provides a first required voltage to the display module.

Therefore, the AP is used for transcoding the required voltage of the display module analyzed by the DDIC, and the PMIC is controlled by the AP to provide the required voltage for the display module, so that the PMIC can be prevented from providing unmatched required voltage for the display module.

It should be noted that

steps

620, 640 and 660 are shown in fig. 6 by dashed boxes, which represent the internal processing of the device or chip.

The method for controlling the power supply chip to supply voltage provided by the present application is described in detail above. The following describes a control device, a drive device, and a power supply device provided in the present application.

Referring to fig. 7, fig. 7 is a schematic block diagram of a control device 700 provided herein. As shown in fig. 7, the control device 700 includes a processing unit 710 and a transceiving unit 720.

A transceiver unit 710 for receiving a first signal from the driving chip;

the processing unit 720 is configured to control the transceiver unit 710 to output a second signal to the power chip according to first information, second information and the first signal, where the first information is used to indicate a first corresponding relationship between an output signal of the driving chip and a required voltage of the display module, and the second information is used to indicate a second corresponding relationship between the output signal of the power chip and the required voltage of the display module.

Further, the control device 700 comprises a storage unit 730 for storing said first information and second information. The storage unit 730 may also be used for storing computer programs or instructions necessary for the processing unit 720 to perform the respective operations and/or processes. The storage unit 730 may be a memory.

Alternatively, the transceiver unit 710 may be replaced by a receiving unit and/or a transmitting unit.

For example, the transceiving unit 710 may be replaced by a receiving unit when performing the step of receiving. The transceiving unit 710 may be replaced by a transmitting unit when performing the step of transmitting.

In one implementation, the first information is specifically used to indicate the first corresponding relationship between the number of pulse signals output by the driving chip and the required voltage of the display module, and the second information is used to indicate the second corresponding relationship between the number of pulse signals output by the power chip and the required voltage of the display module. The transceiver 710 is configured to receive a first number of pulse signals from the driver chip; the processing unit 720 is configured to control the transceiver unit 710 to output a second number of pulse signals to the power supply chip according to the first number, the first corresponding relationship recorded by the first information and the second corresponding relationship recorded by the second information, which are stored in the storage unit 730.

In another implementation, the transceiver unit 710 is configured to receive a first number of pulse signals from the driving chip;

and the processing unit 720 is specifically configured to control the transceiver unit 710 to output a second number of pulse signals to the power supply chip according to the first corresponding relationship, the second corresponding relationship, and the first number.

In another implementation manner, the processing unit 720 is specifically configured to determine, according to the first corresponding relationship and the first number, a first required voltage of the display modules corresponding to the first number; and determining a second quantity corresponding to the first demand voltage according to the second corresponding relation and the first demand voltage.

In another implementation, the transceiver 710 is further configured to send an MIPI signal to the driver chip, where the MIPI signal includes brightness information of a display module, where the first signal is determined according to the brightness information, and the display module includes the display screen.

In one implementation, the control device 700 may be a chip or an integrated circuit. The chip may be, for example, a system on chip (SoC), a baseband chip, or the like.

Alternatively, the control device 700 may also be an Application Processor (AP), or the control device 700 may also be other devices in the terminal equipment besides the AP, which have the functions of the control device in the method embodiment of the present application, and this document is not limited thereto.

In this implementation, the transceiving unit 710 may be a communication interface or an interface circuit. The communication interface may specifically include a signal input interface and a signal output interface. The interface circuit may specifically comprise an input interface circuit and an output interface circuit. The processing unit 720 may be a processing device.

The steps executed by the processing device may be implemented by hardware, or may be implemented by hardware executing corresponding software.

For example, the processing device may include one or more memories for storing computer programs and one or more processors for reading and executing the computer programs stored in the one or more memories, so that the control device 700 performs the respective operations and/or processes of the respective method embodiments.

Alternatively, the processing means may comprise only the processor, the memory for storing the computer program being located outside the processing means. The processor is connected to the memory through the circuit/wire to read and execute the computer program stored in the memory.

Also for example, the processing device may process circuitry.

Referring to fig. 8, fig. 8 is a schematic block diagram of a driving apparatus 800 provided in the present application. As shown in fig. 8, the driving apparatus 800 includes a processing unit 810 and a transceiving unit 820.

The processing unit 810 determines a required voltage of the display module;

the processing unit 810 is further configured to control the transceiver 820 to output a first signal to the control device according to first information and a required voltage of the display module, where the first information is used to indicate a first corresponding relationship between an output signal of the driving device and the required voltage of the display module.

Furthermore, the drive apparatus 800 may further comprise a storage unit 830 for storing the first information. The storage unit 830 may also be used for storing computer programs or instructions necessary for the processing unit 810 to perform the corresponding operations and/or processes. The storage unit 830 may be a memory.

Alternatively, the transceiving unit 820 may be replaced by a receiving unit and/or a transmitting unit.

For example, the transceiving unit 820 may be replaced by a receiving unit when performing the step of receiving. The transceiving unit 820 may be replaced by a transmitting unit when performing the step of transmitting.

In one implementation, the first information is specifically used to indicate a first corresponding relationship between the number of pulse signals output by the driving device and a required voltage of a display module, where the processing unit 810 is specifically used to:

determining a first required voltage of the display module, and determining a first quantity corresponding to the first required voltage according to the first corresponding relation and the first required voltage;

the control transceiving unit 820 outputs a first number of pulse signals to the control device.

Alternatively, the transceiving unit 820 may be a communication interface or an interface circuit. The communication interface may specifically include a signal input interface and a signal output interface. The interface circuit may specifically comprise an input interface circuit and an output interface circuit. Processing unit 810 may be a processing device.

The functions of the processing device may be implemented by hardware, or may be implemented by hardware executing corresponding software.

For example, the processing device may include one or more memories for storing computer programs and one or more processors for reading and executing the computer programs stored in the one or more memories, so that the driving device 800 performs the corresponding operations and/or processes of the method embodiments.

Alternatively, the processing device may also be a logic circuit, an integrated circuit, or the like.

Referring to fig. 9, fig. 9 is a schematic block diagram of a power supply apparatus 900 provided herein. As shown in fig. 9, the power supply apparatus 900 includes a transceiving unit 910 and a processing unit 920.

A transceiving unit 910, configured to receive a second signal from a control apparatus;

a processing unit 920, configured to control the transceiver unit 910 to output a required voltage of a display module according to second information and the second signal, where the second information is used to indicate a second corresponding relationship between an output signal of the power supply device and the required voltage of the display module.

Further, the power supply apparatus 900 may further include a storage unit 930 for storing the second information. The storage unit 930 may also be used to store computer programs or instructions necessary for the processing unit 920 to perform the corresponding operations and/or processes. The storage unit 930 may be a memory.

Alternatively, the transceiving unit 910 may be replaced by a receiving unit and/or a transmitting unit.

For example, the transceiving unit 910 may be replaced by a receiving unit when performing the step of receiving. The transceiving unit 910 may be replaced by a transmitting unit when performing the step of transmitting.

Optionally, in an implementation manner, the second information is specifically used to indicate a second corresponding relationship between the number of pulse signals output by the power supply device and the required voltage of the display module, wherein,

the transceiver unit 910 is specifically configured to receive a second number of pulse signals from the control device;

the processing unit 920 is specifically configured to determine a first required voltage of the display modules corresponding to the second number according to the second corresponding relationship, and control the transceiver unit 910 to output the first required voltage.

Alternatively, the transceiving unit 910 may be a communication interface or an interface circuit. The communication interface may specifically include a signal input interface and a signal output interface. The interface circuit may specifically comprise an input interface circuit and an output interface circuit. The processing unit 920 may be a processing device.

In one implementation, the transceiving unit 920 may include one signal input interface and 3 signal output interfaces. Wherein the signal input interface is used for receiving signals (for example, second signals) received from the control device, and the 3 signal output interfaces are respectively used for outputting AVDD, ELVDD and ELVSS.

Alternatively, the functions of the processing device may be implemented by hardware, or by hardware executing corresponding software.

For example, the processing device may include one or more memories for storing computer programs and one or more processors for reading and executing the computer programs stored in the one or more memories, so that the power supply device 900 performs the respective operations and/or processes in the method embodiments.

Referring to fig. 10, fig. 10 is a schematic structural view of the control device 10 provided in the present application. As shown in fig. 10, the control device 10 includes: one or more processors 11, one or more memories 12, and one or more communication interfaces 13. Wherein, the processor 11 is used for controlling the communication interface 13 to send and receive signals, the memory 12 is used for storing a computer program, and the processor 11 is used for calling and running the computer program from the memory 12, so that the control device 10 executes the corresponding processing and/or operation executed in the method embodiments of the present application.

For example, the processor 11 may have the functions of the processing unit 720 shown in fig. 7, and the communication interface 13 may have the functions of the transceiving unit 710 shown in fig. 7. Specifically, refer to the description in fig. 7, which is not described herein again.

Alternatively, the control device 10 may be a baseband processor or an application processor in the terminal equipment.

Referring to fig. 11, fig. 11 is a schematic structural view of the driving device 20 provided in the present application. As shown in fig. 11, the driving device 20 includes: one or more processors 21, one or more memories 22, and one or more communication interfaces 23. The processor 21 is used for controlling the communication interface 23 to send and receive signals, the memory 22 is used for storing a computer program, and the processor 21 is used for calling and running the computer program from the memory 22 so as to enable the driving device 20 to execute corresponding processing and/or operation executed in each method embodiment.

For example, the processor 21 may have the functions of the processing unit 810 shown in fig. 8, and the communication interface 23 may have the functions of the transceiving unit 820 shown in fig. 8. Specifically, refer to the description in fig. 8, which is not described herein again.

Alternatively, the driving device 20 may be a DDIC.

Referring to fig. 12, fig. 12 is a schematic structural view of a power supply device 30 provided in the present application. As shown in fig. 12, the power supply device 30 includes: one or more processors 31, one or more memories 32, and one or more communication interfaces 33. The processor 31 is used for controlling the communication interface 33 to send and receive signals, the memory 32 is used for storing a computer program, and the processor 31 is used for calling and running the computer program from the memory 32 so that the power supply device 30 performs corresponding processing and/or operations performed in the method embodiments.

For example, the processor 31 may have the functions of the processing unit 920 shown in fig. 9, and the communication interface 33 may have the functions of the transceiving unit 910 shown in fig. 9. Specifically, refer to the description in fig. 9, which is not described herein again.

Alternatively, the power supply device 20 may be a PMIC.

Alternatively, the memory and the storage in the above-mentioned embodiments of the apparatus may be physically separate units, or the memory and the processor may be integrated together.

In addition, the application provides a circuit system for controlling a power supply chip to supply voltage, which comprises the control device, the driving device and the power supply device.

The application also provides a terminal device, which comprises the circuit system. In addition, terminal equipment still includes the display module assembly, the display module assembly still includes the display screen.

The present application also provides a computer-readable storage medium, in which computer instructions are stored, and when the computer instructions are executed on a computer, the computer is enabled to execute the operations and/or processes executed by the control device in the method for controlling the power supply chip to supply the voltage provided by the present application.

The present application also provides a computer-readable storage medium, which stores computer instructions that, when executed on a computer, cause the computer to perform the operations and/or processes performed by the driving apparatus (or, the driving chip) in the method for controlling the power supply chip to supply voltage provided by the present application.

The present application also provides a computer-readable storage medium having stored therein computer instructions, which, when executed on a computer, cause the computer to perform the operations and/or processes performed by the power supply device (or, the power supply chip) in the method for controlling the power supply chip to supply voltage provided by the present application.

The present application also provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the operations and/or processes performed by the control device in the method for controlling a power supply chip to provide a voltage as provided by the present application

The present application further provides a computer program product, which includes computer program code, when the computer program code runs on a computer, the computer is enabled to execute the operations and/or processes executed by the driving apparatus in the method for controlling the power chip to provide the voltage provided by the present application.

The present application also provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the operations and/or processes performed by the power supply device in the method of controlling the supply of voltage by a power supply chip provided by the present application.

The present application further provides a chip comprising a processor. A memory for storing a computer program is provided separately from the chip, and a processor is used to execute the computer program stored in the memory to perform the operations and/or processes performed by the control apparatus in any of the method embodiments.

Further, the chip may also include a communication interface. The communication interface may be an input/output interface, an input/output circuit, etc. Further, the chip may further include a memory.

The application also provides a driver chip, the driver chip includes a processor. A memory for storing the computer program is provided separately from the chip, and the processor is configured to execute the computer program stored in the memory to perform the operations and/or processes performed by the driver chip in any of the method embodiments.

Further, the driving chip may further include a communication interface. The communication interface may be an input-output interface or an interface circuit, etc. Further, the chip may further include a memory. The input output interfaces may include one or more signal input interfaces and one or more signal output interfaces.

The application also provides a power supply chip, the power supply chip includes a processor. A memory for storing the computer program is provided separately from the chip, and a processor is used to execute the computer program stored in the memory to perform the operations and/or processes performed by the power supply chip in any of the method embodiments.

Further, the power supply chip may further include a communication interface. The communication interface may be an input-output interface or an interface circuit, etc. Further, the power supply chip may further include a memory. The input output interfaces may include one or more signal input interfaces and one or more signal output interfaces.

The application also provides a display module, including driver chip.

The application also provides a terminal device, including controlling means, driver chip, power chip and display module assembly.

Specifically, the structure of the terminal device may be as shown in fig. 1 or fig. 2, which is not described herein again.

The processor referred to in the embodiments of the present application may be an integrated circuit or a chip, and has a function of processing signals. The steps performed by the processor may be performed by integrated logic circuits in hardware or instructions in the form of software in the processor. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or any conventional processor or the like.

The memory in the embodiments of the present application may be either volatile memory or nonvolatile memory, or include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM). The RAM includes, but is not limited to, Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM).

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the technical solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. a method for controlling a power supply chip to provide voltage, characterized in that, applied to a terminal device comprising a display module, the method comprising:

the control device receives the first signal from the driving chip;

According to the first information, the second information and the first signal, a second signal is output to the power chip, wherein the first information is used to indicate the difference between the output signal of the driver chip and the required voltage of the display module The second information is used to indicate the second correspondence between the output signal of the power chip and the demanded voltage of the display module.

2 . The method according to claim 1 , wherein the first information is specifically used to indicate the first information between the number of pulse signals output by the driver chip and the required voltage of the display module. 3 . Corresponding relationship, the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power supply chip and the required voltage of the display module.

3. The method according to claim 2, wherein the receiving the first signal from the driver chip comprises:

receiving a first number of pulse signals from the driver chip;

Described according to the first information, the second information and the first signal, to the power chip outputting the second signal, including:

According to the first corresponding relationship, the second corresponding relationship and the first number, a second number of pulse signals are output to the power chip.

4 . The method according to claim 3 , wherein, according to the first correspondence, the second correspondence and the first quantity, the second quantity of pulse signals is output to the power chip. 5 . ,include:

determining, according to the first correspondence and the first quantity, a first demanded voltage of the display module corresponding to the first quantity;

determining a second quantity corresponding to the first demand voltage according to the second correspondence and the first demand voltage;

The second number of pulse signals are output to the power chip.

5. The method according to any one of claims 1-4, wherein before the receiving the first signal from the driver chip, the method further comprises:

Send a mobile industry processor interface MIPI signal to the driver chip, where the MIPI signal includes brightness information of the display screen, wherein the first signal is determined according to the brightness information, and the display module includes the display.

6. A method for controlling a power supply chip to provide voltage, characterized in that it is applied to a terminal device comprising a display module, the method comprising:

The driver chip determines the required voltage of the display module;

Output a first signal to the control device according to the first information and the demanded voltage of the display module, wherein the first information is used to indicate the difference between the output signal of the driving chip and the demanded voltage of the display module the first correspondence.

7 . The method according to claim 6 , wherein the first information is specifically used to indicate the corresponding relationship between the number of pulse signals output by the driver chip and the required voltage of the display module, wherein ,

The determining of the required voltage of the display module includes:

determining the first demand voltage of the display module;

The outputting the first signal to the control device according to the first information and the demanded voltage of the display module includes:

determining the first quantity corresponding to the first demand voltage of the display module according to the first correspondence and the first demand voltage;

The first number of pulse signals are output to the control device.

8. A method for controlling a power supply chip to provide voltage, wherein the method is applied to a terminal device comprising a display module, the method comprising:

the power chip receives the second signal from the control device;

According to the second information and the second signal, the demanded voltage of the display module is output, wherein the second information is used to indicate the second difference between the output signal of the power chip and the demanded voltage of the display module Correspondence.

9 . The method according to claim 8 , wherein the second information is specifically used to indicate the number of pulse signals output by the power chip and the second information of the required voltage between the display modules. 10 . Correspondence, where,

The receiving the second signal from the control device includes:

receiving a second number of pulsed signals from the control device;

The outputting the required voltage of the display module according to the second information and the second signal includes:

determining the first demanded voltage of the display module corresponding to the second quantity according to the second correspondence and the second quantity;

The first demand voltage is output to the display module.

10. A method for controlling a power supply chip to provide voltage, characterized in that it is applied to a terminal device comprising a control device, a power supply chip, a driver chip and a display module, the method comprising:

The control device outputs a mobile industry processor interface MIPI signal to the driver chip;

The driver chip receives the MIPI signal from the control device, and determines the required voltage of the display module according to the MIPI signal;

The driver chip outputs a first signal to the control device according to the first information and the required voltage of the display module, wherein the first information is used to indicate the output signal of the driver chip and the display module. a first correspondence between the demand voltages of the groups;

The control device receives the first signal from the driving chip, and outputs a second signal to the power chip according to the first signal, the first information and the second information, wherein the first signal The second information is used to indicate the second correspondence between the output signal of the power chip and the required voltage of the display module;

The power chip receives the second signal from the control device, and outputs the required voltage of the display module according to the second signal and the second information.

11 . The method according to claim 10 , wherein the first information is specifically used to indicate the first information between the number of pulse signals output by the driver chip and the required voltage of the display module. 12 . The corresponding relationship, the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power supply chip and the required voltage of the display module, wherein,

The driver chip receives the MIPI signal from the control device, and determines the required voltage of the display module according to the MIPI signal, including:

The driver chip receives the MIPI signal from the control device, and determines a first demand voltage of the display module according to the MIPI signal;

The driver chip outputs a first signal to the control device according to the first information and the required voltage of the display module, including:

The driving chip determines a first quantity corresponding to the first required voltage according to the first corresponding relationship and the first required voltage, and outputs the pulse signal of the first quantity to the control device;

The control device receives the first signal from the driving chip, and outputs a second signal to the power chip according to the first signal, the first information and the second information, including:

The control device receives the first quantity of pulse signals from the driving chip, and outputs a second quantity to the power chip according to the first quantity, the first correspondence and the second correspondence , wherein the first correspondence indicates that the first quantity corresponds to the first demand voltage, and the second correspondence indicates that the first demand voltage corresponds to the second quantity;

The power chip receives the second signal from the control device, and outputs the required voltage of the display module according to the second signal and the second information, including:

The power chip receives the second number of pulses from the control device, and outputs the first demand voltage to the display module according to the second number and the second corresponding relationship.

12. A control device, characterized in that it is applied to a terminal device, the terminal device comprising a display module, a driver chip and a power supply chip, the control device comprising:

a signal input interface for receiving the first signal from the driver chip;

The processor is configured to control the signal output interface to output a second signal to the power chip according to the first information, the second information and the first signal, wherein the first information is used to indicate the output signal of the driver chip and the The first correspondence between the demanded voltages of the display module, and the second information is used to indicate the second correspondence between the output signal of the power chip and the demanded voltage of the display module.

13 . The control device according to claim 12 , wherein the first information is specifically used to indicate the first information between the number of pulse signals output by the driving chip and the required voltage of the display module. 14 . A corresponding relationship, the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power supply chip and the required voltage of the display module.

14. The control device according to claim 13, wherein the signal input interface is configured to receive a first number of pulse signals from the driving chip;

The processor is configured to control the signal output interface to output a second number of pulse signals to the power chip according to the first correspondence, the second correspondence and the first quantity.

15. The control device according to claim 14, wherein the processor is specifically configured to:

determining the first demand voltage of the display module corresponding to the first quantity according to the first correspondence;

determining a second quantity corresponding to the first demand voltage according to the second correspondence;

The signal output interface is controlled to output the second quantity of pulse signals to the power chip.

16. The control device according to any one of claims 12-15, wherein the signal output interface is further configured to send a mobile industry processor interface MIPI signal to the driver chip, wherein the MIPI signal includes Display brightness information;

And, the first signal is determined by the driving chip according to the luminance information.

17. A drive device, characterized in that it is applied to a terminal device, the terminal device comprising a display module, a control device and a power supply device, the drive device comprising:

a processor for determining the required voltage of the display module;

The processor is further configured to control the signal output interface to output a first signal to the control device according to the first information and the required voltage of the display module, wherein the first information is used to instruct the driving device The first correspondence between the output signal of the display module and the demanded voltage of the display module.

18 . The driving device according to claim 17 , wherein the first information is specifically used to indicate the difference between the number of pulse signals output by the driving device and the required voltage of the display module. 19 . The first correspondence, wherein the processor is specifically used for:

determining the first demand voltage of the display module;

determining a first quantity corresponding to the first demand voltage according to the first correspondence;

The signal output interface is controlled to output the first number of pulse signals to the control device.

19. A power supply device, characterized in that it is applied to a terminal device, the terminal device comprising a display module, a control device and a drive device, the drive device comprising:

a signal input interface for receiving a second signal from the control device;

a processor, configured to control the signal output interface to output the required voltage of the display module according to the second information and the second signal, wherein the second information is used to indicate the output signal of the power supply device and the A second correspondence between the demanded voltages of the modules is displayed.

20 . The power supply device according to claim 19 , wherein the second information is specifically used to indicate the difference between the number of pulse signals output by the power supply device and the required voltage of the display module. 21 . Two correspondences,

in,

The signal input interface is specifically configured to receive a second quantity of pulse signals from the slave control device;

The processor is specifically configured to determine the first demanded voltage of the display module corresponding to the second quantity according to the second correspondence, and to control the signal output interface to output the desired voltage to the display module. the first demand voltage.

21. A circuit system, characterized in that it is used to provide a demand voltage to a display module of a terminal device, the circuit system comprising a control device, a power supply chip and a driver chip, wherein,

The control device is configured to output a mobile industry processor interface MIPI signal to the driver chip;

The driver chip is configured to receive a MIPI signal from the control device, and determine the required voltage of the display module according to the MIPI signal;

The driving chip is used for outputting a first signal to the control device according to the first information and the required voltage of the display module, wherein the first information is used to indicate the output signal of the driving chip and the required voltage of the display module. the first correspondence between the demanded voltages of the display modules;

The control device is configured to receive the first signal from the driving chip, and output a second signal to the power chip according to the first signal, the first information and the second information, wherein, The second information is used to indicate the second correspondence between the output signal of the power chip and the required voltage of the display module;

The power chip is configured to receive the second signal from the control device, and output the required voltage of the display module according to the second signal and the second information.

22 . The circuit system according to claim 21 , wherein the first information is specifically used to indicate the first information between the number of pulse signals output by the driver chip and the required voltage of the display module. 23 . A corresponding relationship, the second information is specifically used to indicate the second corresponding relationship between the number of pulse signals output by the power supply chip and the required voltage of the display module, wherein,

The driver chip is specifically configured to receive the MIPI signal from the control device, determine a first demanded voltage of the display module according to the MIPI signal, and determine the first required voltage of the display module according to the MIPI signal, and demand voltage, determine a first quantity corresponding to the first demand voltage, and output a pulse signal of the first quantity to the control device;

The control device is configured to receive the pulse signal of the first quantity from the driving chip, and output the pulse signal to the power chip according to the first quantity, the first correspondence and the second correspondence A second quantity of pulse signals, wherein the first correspondence indicates that the first quantity corresponds to the first demanded voltage, and the second correspondence indicates that the first demanded voltage corresponds to the second quantity ;

The power supply chip is configured to receive the second quantity of pulses from the control device, and output the first required voltage to the display module according to the second quantity and the second corresponding relationship.

23. A control device comprising at least one processor coupled to at least one memory:

The at least one processor is configured to execute computer programs or instructions stored in the at least one memory, so that the terminal device executes the method according to any one of claims 1-5.

24. A drive device comprising at least one processor coupled to at least one memory:

The at least one processor is configured to execute computer programs or instructions stored in the at least one memory, so that the terminal device executes the method according to claim 6 or 7.

25. A power supply device comprising at least one processor coupled to at least one memory:

The at least one processor is configured to execute computer programs or instructions stored in the at least one memory, so that the terminal device executes the method according to claim 8 or 9.

26. A computer-readable storage medium, characterized in that, a computer program is stored in the computer-readable storage medium, and when the computer program is executed on a computer, the computer is made to execute any one of claims 1-11. method described in item.

27. A terminal device, characterized by comprising the circuit system as claimed in claim 21 or 22.