CN111369942A - Driving voltage adjusting method and electronic device - Google Patents
Driving voltage adjusting method and electronic device Download PDFInfo
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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Abstract
The invention discloses a driving voltage adjusting method and an electronic device. The method is applied to electronic equipment, the electronic equipment comprises a display module, and the method comprises the following steps: acquiring a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period; and under the condition that the target ripple value is larger than the first ripple value, adjusting the driving voltage of the display module based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module. According to the embodiment of the invention, the problem of screen flashing of the display screen can be solved.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a driving voltage adjusting method and electronic equipment.
Background
An Active Matrix Organic Light Emitting Diode (AMOLED) display screen is a screen made of self-luminous organic material, which does not need a backlight. When a current is passed through the organic material, the pixel self-emits light. Compared with the traditional liquid crystal panel, the AMOLED display screen has the characteristics of being lighter and thinner, having higher response speed, having higher contrast, having wider viewing angle and the like, and is widely applied to mobile terminals.
Since the driving voltage (ELVDD) of the AMOLED display module fluctuates, when the fluctuation of the ELVDD of the display module is large, the problem of screen flash may occur.
Disclosure of Invention
The embodiment of the invention provides a driving voltage adjusting method, electronic equipment and a medium, which can solve the problem of screen flash of a display screen.
In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:
in a first aspect, an embodiment of the present invention provides a driving voltage adjustment method applied to an electronic device, where the electronic device includes a display module, and the method includes:
acquiring a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period;
and under the condition that the target ripple value is larger than a first ripple value, adjusting the driving voltage of the display module based on a first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module.
In a second aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a display module, and the electronic device includes:
the first acquisition module is used for acquiring a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period;
and the first adjusting module is used for adjusting the driving voltage of the display module on the basis of a first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage under the condition that the target ripple value is larger than the first ripple value so as to reduce the ripple value of the driving voltage of the display module.
In a third aspect, an embodiment of the present invention provides an electronic device, where the device includes: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements the driving voltage adjustment method as provided in the first aspect above.
In a fourth aspect, an embodiment of the present invention provides a computer storage medium, where computer program instructions are stored, and when the computer program instructions are executed by a processor, the method for adjusting a driving voltage according to the first aspect is implemented.
In the embodiment of the invention, a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period is obtained; and under the condition that the target ripple value is larger than the first ripple value, adjusting the driving voltage of the display module based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module. Through the drive voltage of adjustment display module assembly, make the module that steps up be in normal mode of stepping up to reduce the ripple value of the drive voltage of display module assembly, thereby solve the splash screen problem of display screen.
Drawings
The invention will be better understood from the following description of specific embodiments thereof, taken in conjunction with the accompanying drawings. Wherein like or similar reference numerals refer to like or similar features.
Fig. 1 is a schematic structural diagram of a display module circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pixel unit circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a boost DC-DC circuit according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a driving voltage adjustment method according to an embodiment of the invention;
fig. 5 is a second schematic flow chart of a driving voltage adjustment method according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 7 is a second schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
As shown in fig. 1, the AMOLED display module Circuit is composed of a driving Integrated Circuit (IC), a scan driving Circuit and a pixel array Circuit. The Central Processing Unit (CPU) and the driver IC communicate with each other through a Mobile Industry Processor Interface (MIPI) bus and a control signal. The driver IC has a power supply. The pixel array circuit is powered by the boost DC-DC converter output drive voltage (ELVDD) and the low level power supply voltage (ELVSS). Among them, a DC-DC converter is a device that changes electric energy of one voltage value into electric energy of another voltage value in a direct current circuit.
The pixel array circuit is composed of a plurality of pixel unit circuits. Each pixel cell circuit is identical as shown in fig. 2. The pixel unit circuit comprises a switching tube T1, a driving tube T2, and a storage capacitor CSAnd an Organic Light Emitting Diode (OLED).
The gate of the switching transistor T1 is connected to the scan driving circuit. The drain of the switch transistor T1 is connected to the gate of the driving transistor T2. The source of the switching transistor T1 is connected to a signal line of the driver IC. The source electrode of the driving tube T2 is connectedConnected to the driving voltage ELVDD and the storage capacitor CSIs connected at one end. Storage capacitor CSAnd the other end thereof is connected to the gate of the driving tube T2. The drain of the driving transistor T2 is connected to the anode of the OLED. The cathode of the OLED is connected with the ELVSS.
When a scan driving circuit selects a row, if the scan driving circuit outputs a voltage VscanAt low level, the switch transistor T1 is turned on to drive the output V of ICdataTransmitted to the grid of the driving tube T2 through the tube T1 and temporarily stored in the capacitor CSIn (1). When V isscanWhen the voltage is high, the switch tube T1 is turned off due to the storage capacitor CSExist of VdataGate G of T2 will be temporarily present. Gate-source voltage difference V of T2GSThe driving current is generated to drive the OLED to continuously emit light in one period.
Wherein, the current I for controlling the luminous brightness of the OLEDDRIVEThe expression is as follows:
IDRIVE＝1/2×μP×СOX×(W/L)×(ELVDD-Vdata-|VTHP|) (1)
wherein, muPIs the mobility of the driving tube T2, COXIs the capacitance of unit gate oxide layer, W/L is the width-length ratio, | V, of conductive channel of the driving tube T2THPI is V of T2GSThreshold voltage of conduction, VdataIs the signal output by the driver IC.
As can be seen from equation (1), the ELVDD is connected to the source S of the driving transistor T2, and since the driving transistor T2 operates in the constant current region, the voltage fluctuation of the ELVDD will affect VGSVoltage, thereby influencing the current I of the OLEDDRIVE. If the fluctuation of the ELVDD is large, especially at low brightness due to IDRIVEThe current change rate is high due to small fluctuation, and the screen flash problem is easy to occur.
Fig. 3 shows a schematic structural diagram of an exemplary boosted DC-DC of ELVDD provided by an embodiment of the present invention. As shown in fig. 3, the boost DC-DC includes an input power VIN, an energy storage inductor L1, a switching tube T3, a follow current tube T4 (a built-in body diode D1), and an output capacitor C1.
One end of the input power VIN is connected to one end of the energy storage inductor L1, and the other end of the input power VIN is connected to the power ground. The other end of the energy storage inductor L1 is connected to the drain of the switch transistor T3 and the source of the follow current transistor T4, respectively. The source of the switch tube T3 is connected to power ground. The drain of the follow current tube T4 is connected to one end of the output capacitor C1. The other end of the output capacitor C1 is connected to power ground. Wherein, the voltage between one end of the output capacitor C1 and the power ground is ELVDD.
At present, the ELVDD power supply of the AMOLED screen is about 4.6V, and the input power source VIN generally manages the output voltage V by a charging pathSYSAnd (5) supplying power. VSYSThe voltage is slightly higher than the battery voltage during charging and is consistent with the battery voltage during a non-charging state. In order to increase the battery capacity, the development trend of high voltage batteries with 4.4V and above is to make the input voltage VIN very close to the output voltage ELVDD, even exceeding the ELVDD voltage during charging. At this time, the boosting duty ratio is very small, even no boosting action is performed, the switching tube T3 has insufficient time to open, even no switching action at all, the switching tube T4 is closed, only the body diode D1 performs freewheeling, and the DC-DC operation in the mode is called a diode mode. The ELVDD output ripple is large in the diode mode, the screen flash problem is likely to occur in low brightness, and the user experience is poor.
Accordingly, the embodiment of the invention provides a driving voltage adjusting method to solve the problem that a display screen is easy to have screen flash. The following detailed description is to be read with reference to the drawings.
Fig. 4 is a schematic flow chart illustrating a driving voltage adjustment method according to an embodiment of the present invention. As shown in fig. 4, the method is applied to an electronic device including a display module, and includes steps 410 and 420.
In step 420, when the target ripple value is greater than the first ripple value, the driving voltage of the display module is adjusted based on the first preset voltage difference threshold and the input voltage of the boost module outputting the driving voltage, so as to reduce the ripple value of the driving voltage of the display module.
In the embodiment of the invention, the driving voltage of the display module of the electronic equipment has a target ripple value in a target time period; under the condition that the target ripple value is larger than the first ripple value, the driving voltage of the display module is adjusted based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage, so that the boosting module jumps out of a diode mode and is in a normal boosting mode, the ELVDD ripple of the display module is reduced, and the problem of screen flicker of the display screen is solved.
The specific implementation of step 410 and step 420 is described in detail below.
First, a specific implementation of step 410 is described. It should be noted that, since the ELVDD of each pixel unit circuit is the same, the ELVDD of the display module is the ELVDD of each pixel unit circuit.
In some embodiments of the invention, the target time period may be a preset time period.
In some embodiments of the present invention, the display module of the electronic device may include an Organic Light-Emitting Diode (OLED) display screen.
In some embodiments, the target ripple value is a difference between a maximum driving voltage and a minimum driving voltage of the plurality of driving voltages of the display module collected during the target time period.
The specific implementation of step 420 is described below. In some embodiments of the present invention, the first ripple value may be a preset voltage ripple value.
And judging whether the display screen flickers or not according to the magnitude relation between the target ripple value and the first ripple value. If the target ripple value is not larger than the first ripple value, the display screen does not flicker, and the driving voltage of the display module does not need to be adjusted. Then it waits for the next preset target time period to enter and returns to step 410.
However, if the target ripple value is greater than the first ripple value, it represents that the display screen flickers, so the driving voltage of the display module needs to be adjusted.
In some embodiments, the boost module is the boost DC-DC shown in FIG. 3. The input voltage of the boost module is the voltage value of the input voltage VIN in fig. 3.
In some embodiments of the present invention, the first preset voltage difference threshold △ Vmin is the minimum voltage difference between the input voltage of the boost module and the driving voltage output by the boost module when the boost module operates in the normal boost mode.
In some embodiments of the invention, if the target ripple value is greater than the first ripple value, it represents that screen flicker occurs on the display screen, and if screen flicker occurs on the display screen, it represents that the difference between the driving voltage and the input voltage of the boost module is less than △ Vmin.
It should be noted that the input voltage of the boost module utilized in adjusting the driving voltage of the display module may be the collected current input voltage of the boost module.
In some embodiments, the adjusted driving voltage of the display module is greater than or equal to the first preset voltage difference threshold and the voltage sum of the input voltage of the voltage boosting module. Because the adjusted driving voltage of the display module is adjusted to be larger than or equal to the voltage sum of the input voltage of the boosting module and the first preset voltage difference threshold, the boosting DC-DC can jump out of the diode mode and be in the normal boosting mode, the ELVDD ripple is reduced, and the problem of screen flashing of the display screen is solved.
The larger the driving voltage of the display module is, the larger the power consumption is. Therefore, in order to reduce power consumption, the adjusted driving voltage of the display module may be equal to the voltage sum of the first preset voltage difference threshold and the input voltage of the voltage boost module.
In some embodiments of the present invention, in order to improve the accuracy of determining whether the display module generates the screen flash, the driving voltage adjustment method provided in the embodiments of the present invention further includes: and acquiring a target brightness value of a display module of the electronic equipment in a target time period. The first ripple value is a corresponding ripple value when the display module normally displays under the target brightness.
In some embodiments, the target luminance value within the target time period may be an average value of a plurality of luminance values of the display acquired within the target time period, or a luminance value acquired at a preset time point within the target time period. The target brightness of the display module is the display brightness of the display screen of the electronic device.
It should be noted that the problem of screen flicker is caused after the change rate of the ELVDD current is large, but the acceptable ELVDD ripple values for normal display of the display screen are different under different brightness. The acceptable ripple value is small when the brightness of the display screen is low and is relatively large when the brightness is high. Therefore, in order to improve the accuracy of judging whether the display module generates the screen flashing, the conditions of judging whether the screen flashing can occur under the current brightness of the display module can be different.
Therefore, different ELVDD ripples can be manually injected in advance under the condition that the display screen is at different display brightness to collect acceptable ripple value thresholds that the display screen can normally display under different display brightness, namely, no screen flicker occurs. That is, the corresponding relationship between the ELVDD ripple value threshold and the display screen brightness when the display screen is normally displayed is obtained in advance.
In some examples, fig. 4 shows ELVDD ripple threshold versus display screen brightness for a normal display of the display screen. The maximum ripple value corresponding to the display screen capable of normally displaying under a certain display brightness value of the display screen can be read from the curve. In other embodiments, the corresponding relationship between the acceptable ELVDD ripple threshold and the brightness of the display screen during normal display of the display screen may also be stored in a table format.
In some embodiments of the present invention, according to a target brightness value of the display screen and a pre-obtained correspondence between an ELVDD ripple threshold and the brightness of the display screen during normal display of the display screen, a ripple value threshold, that is, a first ripple value, corresponding to normal display of the display screen at the target brightness value may be obtained.
After the driving voltage of the display module is adjusted, the screen flash problem of the display screen is solved, and then the next preset target time period is entered, and the step 410 is returned.
In some embodiments, in order to reduce power consumption, the driving voltage adjustment method provided in the embodiments of the present invention further includes: and under the condition that the target ripple value is not larger than the first ripple value, if the target voltage difference is larger than a first preset voltage difference threshold value, adjusting the driving voltage of the display module to be the voltage sum of the input voltage and the first preset voltage difference threshold value.
The target voltage difference △ V is a difference between the minimum driving voltage and the input voltage of the display module in the target time period.
In the embodiment of the invention, the larger the driving voltage of the display module is, the larger the power consumption is. Therefore, in order to reduce power consumption, under the condition that the display screen is determined not to generate screen flash under the target brightness, whether the target voltage difference is smaller than or equal to the first preset voltage difference threshold value is judged.
If the target voltage difference is less than or equal to the first preset voltage difference threshold, which represents that the driving voltage of the display module is not to be adjusted, the next preset target time period is waited for, and the process returns to step 410.
However, if the target voltage difference is greater than the first preset voltage difference threshold, the driving voltage of the display module may be reduced, that is, the driving voltage of the display module is adjusted to the voltage sum of the input voltage of the voltage boosting module and the first preset voltage difference threshold. Therefore, relatively low power consumption can be achieved under the condition that the display screen is ensured not to generate screen flash.
For example, when the electronic device is connected to a charger or switched from a heavy load to a light load, the output voltage of the battery may increase, which may cause the input voltage of the boost module to increase, thereby causing the boost module to be in the diode operation mode, so that the screen flash problem occurs on the display screen. In order to solve the screen flash problem of the display screen, under the condition that the ripple value of the driving voltage of the display module of the electronic device is larger than the first ripple value, the driving voltage of the display module is adjusted based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage, so that the boosting module calls out the diode working mode and is in a normal boosting mode, the ripple value of the driving voltage of the display module is reduced, and the screen flash problem of the display screen is solved.
In some embodiments, after the driving voltage of the display module is adjusted to the sum of the input voltage and the first preset voltage difference threshold, the next preset target time period may be directly waited for, and the process returns to step 410.
In some embodiments, after the driving voltage of the display module is adjusted to a sum of the input voltage and the first preset voltage difference threshold, the driving voltage adjusting method provided by the embodiment of the present invention further includes: when the target brightness of the display module changes, the driving voltage of the display module is adjusted to a first preset voltage value.
The first preset voltage value is a preset minimum driving voltage value of the display module, and for example, the first preset voltage value may be 4.6V.
For example, under the condition that the brightness of the display screen is high, the ripple value threshold of the display screen subjected to screen flash is relatively large. Then the driving voltage may be reduced after the brightness of the display screen is changed and the screen flash problem will not be caused. For example, if the brightness of the display screen increases, reducing the driving voltage may not cause the screen flash problem. Therefore, in order to reduce power consumption, if the display brightness of the display screen changes, the driving voltage of the display module may be adjusted to the first preset voltage value.
After the driving voltage of the display module is adjusted to the first preset voltage value, in order to avoid the problem of screen flash, a new target ripple value of the display module in a new target time period is obtained, and if the new target ripple value is smaller than the first ripple value, the display module can be continuously driven by the first preset voltage value, namely the display module is driven by lower power consumption, so that the resource waste is reduced. If the new target ripple value is greater than or equal to the first ripple value, the driving voltage of the display module can be adjusted based on the first preset voltage difference threshold and the acquired input voltage of the boosting module, so that the ripple value of the driving voltage is reduced, and the problem of screen flash is solved.
If the target brightness of the display module is not changed, the next preset target time period can be directly waited for, and the process returns to step 410.
Fig. 5 is a schematic flow chart illustrating a driving voltage adjustment method according to an embodiment of the invention.
Referring to fig. 5, the threshold value of the ripple value of ELVDD acceptable when the display screen normally displays at different brightness levels is collected first. Then, the ELVDD of the display module is set to the first preset voltage value ELVDD 0.
And then, acquiring a target brightness value of a display screen of the electronic equipment in a target time period and a target ripple value of a driving voltage of a display module of the electronic equipment in the target time period.
And then judging whether the target ripple value is less than or equal to the first ripple value, namely judging whether the screen flicker occurs under the target brightness. The first ripple value is the corresponding ripple value when the display module is normally displayed under the target brightness.
And if the target ripple value is larger than the first ripple value, namely, the screen flicker occurs, adjusting the ELVDD, in order to reduce power consumption, after the adjusted ELVDD is equal to VIN + △ vmin, updating the target time period, and returning to the step of acquiring the target brightness value of the display screen of the electronic device in the target time period and the target ripple value of the driving voltage of the display module of the electronic device in the target time period.
And if the target ripple value is not greater than the first ripple value, determining that no flicker occurs on the display screen, and judging whether the target voltage difference △ V is less than or equal to △ Vmin.
And if the △ V is less than or equal to △ Vmin, updating the target time period, and returning to the step of acquiring the target brightness value of the display screen of the electronic equipment in the target time period and the target ripple value of the driving voltage of the display module of the electronic equipment in the target time period.
If △ V is larger than △ Vmin, adjusting the ELVDD, and after the adjusted ELVDD is equal to VIN + △ Vmin, judging whether the brightness of the display screen changes or not.
And if the brightness of the display screen is not changed, updating the target time period, and returning to the step of acquiring the target brightness value of the display screen of the electronic equipment in the target time period and the target ripple value of the driving voltage of the display module of the electronic equipment in the target time period.
If the brightness of the display screen changes, in order to reduce power consumption, the driving voltage of the display module may be adjusted to ELVDD0, and then the step of obtaining the target brightness value of the display screen of the electronic device in the target time period and the target ripple value of the driving voltage of the display module of the electronic device in the target time period may be returned.
Fig. 6 shows a schematic structural diagram of an electronic device 600 according to an embodiment of the present invention. As shown in fig. 6, the electronic device 600 includes a display module, and the electronic device 600 further includes:
the first obtaining module 610 is configured to obtain a target ripple value of a driving voltage of a display module of the electronic device in a target time period.
The first adjusting module 620 is configured to adjust the driving voltage of the display module based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage, so as to reduce the ripple value of the driving voltage of the display module, when the target ripple value is greater than the first ripple value.
In the embodiment of the invention, a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period is obtained; and under the condition that the target ripple value is larger than the first ripple value, adjusting the driving voltage of the display module based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module. Through the drive voltage of adjustment display module assembly, make the boost module be in normal boost mode to reduce the ripple value of the drive voltage of display module assembly, thereby solve the splash screen problem of demonstration.
In some embodiments of the present invention, to solve the problem of screen flicker, the adjusted driving voltage of the display module is greater than or equal to the sum of the input voltage and the first predetermined voltage difference threshold.
In some embodiments of the present invention, in order to improve the accuracy of determining whether the screen flash occurs on the display screen, the electronic device 600 further includes:
and the second acquisition module is used for acquiring a target brightness value of the display module of the electronic equipment in a target time period. The first ripple value is the corresponding ripple value when the display module is normally displayed under the target brightness.
In some embodiments of the invention, to reduce power consumption, the electronic device 600 further comprises:
the second adjusting module is used for adjusting the driving voltage of the display module to the voltage sum of the input voltage and the first preset voltage difference threshold value if the target voltage difference is greater than the first preset voltage difference threshold value under the condition that the target ripple value is not greater than the first ripple value; the target voltage difference is a difference value between the minimum driving voltage and the input voltage of the display module in the target time period.
In some embodiments of the invention, to further reduce power consumption, the electronic device 600 further comprises:
and the third adjusting module is used for adjusting the driving voltage of the display module to be a first preset voltage value when the target brightness of the display module changes.
The electronic device 600 provided in the embodiment of the present invention can implement each process applied in the embodiment of the driving voltage adjustment method provided in the embodiment of the present invention, and is not described here again to avoid repetition.
Fig. 7 is a schematic diagram of a hardware structure of an electronic device 700 for implementing various embodiments of the present invention, where the electronic device 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, a power supply 711, and the like. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 7 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
Wherein, the processor 710 is configured to: acquiring a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period; and under the condition that the target ripple value is larger than the first ripple value, adjusting the driving voltage of the display module based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module.
In the embodiment of the invention, a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period is obtained; and under the condition that the target ripple value is larger than the first ripple value, adjusting the driving voltage of the display module based on the first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module. Through the drive voltage of adjustment display module assembly, make the module that steps up be in normal mode of stepping up to reduce the ripple value of the drive voltage of display module assembly, thereby solve the splash screen problem of display screen.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 701 may be used for receiving and sending signals during a message transmission and reception process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 710; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 701 may also communicate with a network and other devices through a wireless communication system.
The electronic device provides wireless broadband internet access to the user via the network module 702, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.
The audio output unit 703 may convert audio data received by the radio frequency unit 701 or the network module 702 or stored in the memory 709 into an audio signal and output as sound. Also, the audio output unit 703 may also provide audio output related to a specific function performed by the electronic apparatus 700 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 703 includes a speaker, a buzzer, a receiver, and the like.
The input unit 704 is used to receive audio or video signals. The input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera component) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 706. The image frames processed by the graphic processor 7041 may be stored in the memory 709 (or other storage medium) or transmitted via the radio unit 701 or the network module 702. The microphone 7042 may receive sounds and may be capable of processing such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 701 in case of a phone call mode.
The electronic device 700 also includes at least one sensor 705, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 7061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 7061 and/or a backlight when the electronic device 700 is moved to the ear. As one type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of an electronic device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 705 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 706 is used to display information input by the user or information provided to the user. The Display unit 706 may include a Display panel 7061, and the Display panel 7061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 707 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic device. Specifically, the user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 7071 (e.g., operations by a user on or near the touch panel 7071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 7071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 710, receives a command from the processor 710, and executes the command. In addition, the touch panel 7071 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 707 may include other input devices 7072 in addition to the touch panel 7071. In particular, the other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 7071 may be overlaid on the display panel 7061, and when the touch panel 7071 detects a touch operation on or near the touch panel 7071, the touch operation is transmitted to the processor 710 to determine the type of the touch event, and then the processor 710 provides a corresponding visual output on the display panel 7061 according to the type of the touch event. Although the touch panel 7071 and the display panel 7061 are shown in fig. 7 as two separate components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 7071 and the display panel 7061 may be integrated to implement the input and output functions of the electronic device, which is not limited herein.
The interface unit 708 is an interface for connecting an external device to the electronic apparatus 700. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 708 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic apparatus 700 or may be used to transmit data between the electronic apparatus 700 and the external device.
The memory 709 may be used to store software programs as well as various data. The memory 709 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 709 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 710 is a control center of the electronic device, connects various parts of the whole electronic device by using various interfaces and lines, performs various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 709 and calling data stored in the memory 709, thereby monitoring the whole electronic device. Processor 710 may include one or more processing units; preferably, the processor 710 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 710.
The electronic device 700 may also include a power supply 711 (e.g., a battery) for providing power to the various components, and preferably, the power supply 711 may be logically coupled to the processor 710 via a power management system, such that functions of managing charging, discharging, and power consumption may be performed via the power management system.
In addition, the electronic device 700 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides an electronic device, further including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the foregoing method for adjusting a driving voltage, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the driving voltage adjustment method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A driving voltage adjusting method is applied to electronic equipment, the electronic equipment comprises a display module, and the method is characterized by comprising the following steps:
acquiring a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period;
and under the condition that the target ripple value is larger than a first ripple value, adjusting the driving voltage of the display module based on a first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage so as to reduce the ripple value of the driving voltage of the display module.
2. The method according to claim 1, wherein the adjusted driving voltage of the display module is greater than or equal to the sum of the input voltage and the first predetermined voltage difference threshold.
3. The method of claim 1, further comprising:
acquiring a target brightness value of a display module of the electronic equipment in the target time period;
and the first ripple value is a corresponding ripple value when the display module is normally displayed under the target brightness.
4. The method of claim 1, further comprising:
under the condition that the target ripple value is not larger than the first ripple value, if the target voltage difference is larger than the first preset voltage difference threshold, adjusting the driving voltage of the display module to be the voltage sum of the input voltage and the first preset voltage difference threshold;
the target voltage difference is a difference value between the minimum driving voltage of the display module in the target time period and the input voltage.
5. The method of claim 1, further comprising:
when the target brightness of the display module changes, the driving voltage of the display module is adjusted to be a first preset voltage value.
6. The utility model provides an electronic equipment, electronic equipment includes the display module assembly, its characterized in that, equipment includes:
the first acquisition module is used for acquiring a target ripple value of a driving voltage of a display module of the electronic equipment in a target time period;
and the first adjusting module is used for adjusting the driving voltage of the display module on the basis of a first preset voltage difference threshold and the input voltage of the boosting module outputting the driving voltage under the condition that the target ripple value is larger than the first ripple value so as to reduce the ripple value of the driving voltage of the display module.
7. The apparatus according to claim 6, wherein the adjusted driving voltage of the display module is greater than or equal to the sum of the input voltage and the first predetermined voltage difference threshold.
8. The apparatus of claim 6, further comprising:
the second acquisition module is used for acquiring a target brightness value of a display module of the electronic equipment in the target time period; and the first ripple value is a corresponding ripple value when the display module is normally displayed under the target brightness.
9. The apparatus of claim 6, further comprising:
a second adjusting module, configured to adjust a driving voltage of the display module to a voltage sum of the input voltage and the first preset voltage difference threshold if the target voltage difference is greater than the first preset voltage difference threshold under the condition that the target ripple value is not greater than the first ripple value;
the target voltage difference is a difference value between the minimum driving voltage of the display module in the target time period and the input voltage.
10. The apparatus of claim 6, further comprising:
and the third adjusting module is used for adjusting the driving voltage of the display module to be a first preset voltage value when the target brightness of the display module changes.
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| CN111369942B (en) | 2022-01-14 |
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