CN110197641B - Panel driving voltage adjusting method, display device and device with storage function - Google Patents
Panel driving voltage adjusting method, display device and device with storage function Download PDFInfo
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- CN110197641B CN110197641B CN201910429357.4A CN201910429357A CN110197641B CN 110197641 B CN110197641 B CN 110197641B CN 201910429357 A CN201910429357 A CN 201910429357A CN 110197641 B CN110197641 B CN 110197641B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
The application discloses a panel driving voltage adjusting method, a display device and a device with a storage function. The panel driving voltage adjusting method comprises the following steps: acquiring a picture to be displayed; analyzing the picture to obtain a brightness value of the picture; adjusting the driving voltage of the display panel according to the brightness value and adjusting a control signal of the power management integrated circuit; and displaying the picture with the adjusted driving voltage. By means of the mode, the power consumption of the display driving integrated circuit can be reduced, and resources are saved.
Description
Technical Field
The present disclosure relates to the field of display, and in particular, to a method for adjusting a driving voltage of a panel, a display device, and an apparatus having a memory function.
Background
In the OLED driving circuit, the ELVSS/ELVDD is used as the driving voltage at two ends of the OLED device, and plays an important role; at present, two driving voltages are generally provided by a PMIC placed on an FPC or a mainboard; and the DDIC adjusts the voltage by outputting a pulse that can be adjusted by software.
The two driving voltages ELVSS/ELVDD used in the OLED driving are usually a fixed voltage, and in practical applications, the picture displayed is not of a fixed brightness. The conventional DDIC also simply and dynamically adjusts the ELVSS output voltage when the brightness strips are manually adjusted, and the output voltage is not adjusted according to the difference of brightness and darkness of an actual picture, so that the power consumption of the DDIC is increased to a certain extent.
Disclosure of Invention
The technical problem mainly solved by the application is to provide a panel driving voltage adjusting method, a display device and a device with a storage function, which can reduce the power consumption of a display driving integrated circuit and save resources.
In order to solve the technical problem, the application adopts a technical scheme that: a method for adjusting a panel driving voltage is provided, which includes: acquiring a picture to be displayed; analyzing the picture to obtain a brightness value of the picture; adjusting the driving voltage of the display panel according to the brightness value and adjusting a control signal of the power management integrated circuit; and displaying the picture with the adjusted driving voltage.
And the brightness value of the picture is the average value of the brightness of the picture.
Wherein the obtaining the brightness value of the picture comprises: converting the picture into a gray scale format; and calculating the mean value of the brightness of the picture according to the gray value of the picture in the gray format.
Before calculating the mean value of the brightness of the picture according to the gray value of the picture, the method comprises the following steps: dividing the picture in the gray format into a plurality of areas, and respectively calculating the gray value of each area; acquiring a gray level concentrated distribution interval of the picture in the gray level format according to the gray level value of each region; and acquiring the mean value of the brightness of the picture according to the gray level concentrated distribution interval.
Wherein the adjusting the driving voltage of the display unit according to the brightness value comprises: and mapping the gray scale concentrated distribution interval and the driving voltage to obtain the driving voltage matched with the gray scale concentrated distribution interval.
Wherein, the calculating the gray value of each region respectively comprises: and sampling the gray value of each region.
Wherein, the adjusting the driving voltage of the display panel according to the brightness value comprises: and adjusting the driving voltage of a display unit corresponding to the display area of the picture in the display panel according to the brightness value.
Wherein the method further comprises: and calling gamma setting parameters matched with the adjusted driving voltage.
In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a display device including: a processor coupled to the communication circuitry and the memory, a communication circuit, and a memory having stored therein program instructions, the processor executing the program instructions to implement the method described above via the communication circuit.
In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided an apparatus having a storage function, storing program instructions for being executed to implement the panel driving voltage adjusting method as described above.
The beneficial effect of this application is: different from the prior art, the driving voltage of the display panel is adjusted according to the brightness value of the picture to be displayed, the control signal of the power management integrated circuit is adjusted, the driving voltage of the display panel can be adjusted according to the actual display picture, and therefore power consumption of the display driving integrated circuit is reduced, and resources are saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic flowchart of a first embodiment of a method for adjusting a panel driving voltage provided in the present application;
fig. 2 is a schematic flowchart of a panel driving voltage adjusting method according to a second embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a gray format picture divided into a plurality of regions in the panel driving voltage adjusting method according to the present application;
fig. 4 is a schematic flowchart of a panel driving voltage adjusting method according to a third embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating a gamma setting parameter matched with the adjusted driving voltage in the panel driving voltage adjusting method according to the present application;
FIG. 6 is a schematic structural diagram of an embodiment of a display device provided herein;
fig. 7 is a schematic structural diagram of an embodiment of a device with a storage function provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for adjusting a panel driving voltage according to a first embodiment of the present disclosure. The panel driving voltage adjusting method provided by the application comprises the following steps:
s101: and acquiring a picture to be displayed.
In a specific implementation scenario, the application inputs a picture to be displayed on the display panel into a Random Access Memory (RAM) of a Display Driver Integrated Circuit (DDIC).
In other implementation scenarios, it may be necessary to play a video or a moving picture on the display panel, and the application end inputs the next frame of picture to be displayed in the currently played video or moving picture into the RAM of the DDIC.
In other implementation scenarios, the application terminal may sequentially input the pictures to be displayed into the RAM at one time. After acquiring the pictures, the DDIC processes the pictures sequentially in order.
S102: and analyzing the picture to obtain the brightness value of the picture.
In a specific implementation scenario, the DDIC of the display panel analyzes the acquired picture to acquire a brightness value of the picture. In the present implementation scenario, since the brightness of the picture is not very different under normal conditions, for example, all contents in the video or the photo are obtained under the same illumination condition, the brightness average value of the picture may be obtained, and the brightness average value is taken as the brightness value of the picture.
In other implementation scenarios, the image can be converted into a gray format, and the gray value of the image in the gray format is directly related to the brightness value of the original image without color, so that the brightness value of the image can be obtained according to the gray value of the image in the gray format. For example, the average value of the image gray levels may be obtained, and the brightness value of the image may be obtained from the average value of the gray levels.
In other implementation scenarios, the gray value of the picture in the gray format may also be sampled, and may be randomly sampled or sampled according to a preset rule, so as to obtain a gray value distribution interval of the picture in the gray format, obtain a gray value distribution subinterval satisfying the preset rule according to the preset rule (for example, the distribution interval in which more than 50% of the gray value is located), and obtain a corresponding picture brightness value interval according to the subinterval.
S103: and adjusting the driving voltage of the display panel according to the brightness value, and adjusting a control signal of the power management integrated circuit.
In a specific implementation scenario, the driving voltage value of the display panel is obtained according to the brightness value in step S102, and the driving voltage of the display panel is adjusted to the voltage value, in this implementation scenario, the voltage of ELVSS is adjusted, and in other implementation scenarios, the voltage of ELVDD may also be adjusted. In this implementation scenario, the driving voltage value corresponding to the brightness value can be found by looking up the table.
While adjusting the driving voltage of the display panel, a control signal of a Power Management Integrated Circuit (PMIC) is adjusted, and the control signal is used for providing a driving amount for the ELVSS and controlling the voltage value of the ELVSS. Adjusting the control signal of the PMIC can effectively control the voltage value of ELVSS to be stable at the obtained driving voltage value.
In this embodiment, only the driving voltage of the display unit corresponding to the picture display area in the display panel may be adjusted, for example, when the picture displays only the left half area of the display panel, only the driving voltage of the display unit in the left half area may be adjusted.
In this implementation scenario, the display unit may be an OLED display unit or a liquid crystal display unit.
In other implementation scenarios, it is also possible to adjust the driving voltages of all display cells of the entire display panel.
S104: and displaying the picture by the adjusted driving voltage.
In a specific implementation scenario, after the adjustment in step S103, the driving voltage of the display panel is adjusted to a suitable voltage value, and since the voltage value of the adjusted driving voltage is obtained according to the brightness of the picture, the display effect of the picture is not affected, and the power consumption of the DDIC can be correspondingly reduced, thereby saving resources.
As can be seen from the above description, in the embodiment, the driving voltage value is adjusted according to the brightness value of the picture to be displayed, so that the power consumption of the DDIC can be reduced and the resources can be saved without affecting the display effect of the picture.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a second embodiment of a method for adjusting a panel driving voltage according to the present application. The panel driving voltage adjusting method provided by the application comprises the following steps:
s201: and acquiring a picture to be displayed.
In a specific implementation scenario, this step is substantially the same as step S101 in the first embodiment of the panel driving voltage adjustment method provided in this application, and details are not repeated here.
And S202, converting the picture into a gray scale format.
In a specific implementation scenario, the DDIC converts the acquired picture into a grayscale format.
S203: and dividing the picture in the gray format into a plurality of areas, and respectively calculating the gray value of each area.
In a specific implementation scenario, please refer to fig. 3 in combination, and fig. 3 is a schematic diagram illustrating a gray format picture divided into a plurality of regions in the panel driving voltage adjustment method provided in the present application.
As shown in fig. 3, the picture is divided into zones Zone (1) -Zone (n). In this implementation scenario, the region is uniformly divided into several regions, and in other implementation scenarios, the region may be divided according to other rules, for example, according to colors.
And calculating the gray value of each region, and in the implementation scene, acquiring the gray value of each region in a sampling mode, wherein the sampling mode can be random sampling or sampling according to a preset rule. In another implementation scenario, the gray scale value of each pixel in each region may be obtained, the average value of the gray scales of the region may be obtained, and the average value may be used as the gray scale value of the region.
S204: and acquiring the gray level concentrated distribution interval of the image in the gray level format according to the gray level value of each region.
In a specific implementation scenario, the gray scale concentration distribution interval of the gray scale format picture is obtained according to the gray scale values of the regions obtained in step S203. For example, a distribution section in which 50% or more of the gradation values in each region are located is acquired.
In other implementation scenarios, the distribution interval in which all the gray-scale values are located, or the distribution interval in which more than 70% of the gray-scale values are located may be used.
S205: and mapping the gray scale concentrated distribution interval and the driving voltage to obtain the driving voltage matched with the gray scale concentrated distribution interval.
In a specific implementation scenario, the driving voltage is mapped according to the concentrated distribution interval of the gray scales obtained in step S204, and the driving voltage matching the concentrated distribution interval of the gray scales is obtained. For example, if the gray scale concentration distribution interval is a-B, the driving voltage obtained after mapping is C, and the driving voltage is set to C, or if the driving voltage obtained after mapping is C-D, the driving voltage is set to any value of C-D, or an intermediate value.
As can be seen from the above description, in the embodiment, after the picture is converted into the gray format, the picture in the gray format is divided into a plurality of regions, the gray values of the regions are respectively calculated, the gray concentrated distribution region of the picture in the gray format is obtained according to the gray values of the regions, and the driving voltage is obtained by mapping the gray concentrated distribution region with the driving voltage.
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a third embodiment of a method for adjusting a panel driving voltage according to the present application. The panel driving voltage adjusting method provided by the application comprises the following steps:
s401: and acquiring a picture to be displayed.
S402: and analyzing the picture to obtain the brightness value of the picture.
S403: and adjusting the driving voltage of the display panel according to the brightness value, and adjusting a control signal of the power management integrated circuit.
Steps S401 to S403 are substantially the same as steps S101 to S103 in the first embodiment of the panel driving voltage adjusting method provided in the present application, and are not described herein again.
S404: and calling gamma setting parameters matched with the adjusted driving voltage.
In a specific implementation scenario, after the adjusted driving voltage is obtained in step S403, the gamma setting parameter is matched according to the driving voltage. Specifically, referring to fig. 5, fig. 5 is a schematic diagram illustrating a gamma setting parameter matched with the adjusted driving voltage in the panel driving voltage adjusting method according to the present application.
Gamma is derived from the response curve of a CRT (display/television), i.e. the non-linear relation between the brightness and the driving voltage, and the Gamma setting parameter (GAMMA SETTING) is used for indicating the current relation between the brightness and the voltage of the display panel. According to the mapping relationship shown in fig. 5, the matched gamma setting parameters are found. The GAMMA setting parameters are called to ensure that the situation that GAMMA drift occurs to the image due to the adjustment of the driving voltage can be avoided.
S405: and displaying the picture with the adjusted driving voltage.
In a specific implementation scenario, this step is substantially the same as step S104 in the first embodiment of the panel driving voltage adjustment method provided in this application, and details are not repeated here.
As can be seen from the above description, in this embodiment, after the driving voltage matched with the brightness of the picture is obtained, the GAMMA setting parameter matched with the driving voltage is called, so that the situation that GAMMA drift occurs in the image due to adjustment of the driving voltage is avoided.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present disclosure. The display device 10 includes: a processor 11, a memory 12 and a display circuit 13. The display circuit 13 is used to display a picture. The memory 12 is used for storing program instructions, and the processor 11 is used for executing the program instructions in the memory 12 to implement the panel driving voltage adjusting method according to any one of the above embodiments. In one implementation scenario, the memory 12 includes a non-volatile storage portion for storing the program instructions. The processor 11 controls the memory 12 to implement the panel driving voltage adjusting method in any of the above embodiments.
The processor 11 may also be referred to as a CPU (Central Processing Unit). The processor 11 may be an integrated circuit chip having signal processing capabilities. The processor 11 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf 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 the processor may be any conventional processor or the like. In addition, the processor 11 may be commonly implemented by a plurality of circuit-forming chips.
In this embodiment, the processor 11 of the display device 10 obtains a picture to be displayed, analyzes the picture, and obtains a brightness value of the picture. The process 11 adjusts the driving voltage of the display circuit 13 according to the luminance value and adjusts the control signal of the power management integrated circuit of the display circuit 13. The display circuit 13 is controlled to display a picture with the adjusted driving voltage.
As can be seen from the above description, the display device in this embodiment correspondingly adjusts the driving voltage value according to the brightness value of the picture to be displayed, so that the power consumption of the DDIC can be reduced and the resources can be saved without affecting the display effect of the picture.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of a device with a storage function provided in the present application. The device 20 with a storage function stores at least one program instruction 21, and the program instruction 21 is used for executing the panel driving voltage adjusting method shown in fig. 1, fig. 2 and fig. 4. In one embodiment, the apparatus 20 with storage function may be a storage chip in a terminal, a hard disk, or a removable hard disk or other readable and writable storage tool such as a flash disk, an optical disk, or the like, and may also be a server or the like.
As can be seen from the above description, the program instructions stored in the apparatus with storage function in this embodiment may be used to adjust the driving voltage value according to the brightness value of the picture to be displayed, so as to reduce the power consumption of the DDIC and save resources without affecting the display effect of the picture.
Different from the prior art, the driving voltage value is correspondingly adjusted according to the brightness value of the picture to be displayed, the power consumption of the DDIC can be reduced under the condition that the display effect of the picture is not affected, resources are saved, and after the driving voltage matched with the picture brightness is obtained, the GAMMA setting parameters matched with the driving voltage are called, so that the situation that GAMMA drift occurs in the picture due to the adjustment of the driving voltage is avoided.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (5)
1. A method for adjusting a panel driving voltage, comprising:
acquiring a picture to be displayed;
converting the picture into a gray scale format;
dividing the picture in the gray format into a plurality of areas, and respectively calculating the gray value of each area;
acquiring a gray level concentrated distribution interval of the picture in the gray level format according to the gray level value of each region;
mapping the gray scale concentrated distribution interval with the driving voltage to obtain the driving voltage matched with the gray scale concentrated distribution interval, and adjusting a control signal of a power management integrated circuit;
and displaying the picture by the adjusted driving voltage.
2. The method of claim 1, wherein the calculating the gray-level values of the respective regions comprises:
and sampling the gray value of each region.
3. The panel driving voltage adjusting method according to claim 1, further comprising:
and calling gamma setting parameters matched with the adjusted driving voltage.
4. A display device, comprising: a processor, a memory and a display, the processor being coupled to the memory and the display, the memory having stored therein program instructions, the processor executing the program instructions to control the display to implement the panel driving voltage adjusting method according to any one of claims 1 to 3.
5. An apparatus having a storage function, wherein program instructions are stored, the program instructions being for execution to implement the panel driving voltage adjusting method according to any one of claims 1 to 3.
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| CN111192556B (en) * | 2019-12-10 | 2021-11-19 | 华为技术有限公司 | Method and device for controlling power supply chip to supply voltage |
| CN111199707B (en) * | 2020-03-04 | 2021-07-06 | Tcl华星光电技术有限公司 | Display device brightness adjusting device and method |
| CN113971922A (en) * | 2020-07-07 | 2022-01-25 | 中强光电股份有限公司 | Device and method for adjusting driving voltage of light emitting element |
| CN114968853B (en) * | 2021-02-22 | 2023-05-26 | 荣耀终端有限公司 | Power chip management method, system and electronic equipment |
| CN116229876B (en) * | 2021-12-03 | 2024-04-19 | 荣耀终端有限公司 | Method for adjusting driving voltage of display assembly and terminal equipment |
| CN114495858B (en) * | 2022-02-09 | 2024-03-08 | Tcl华星光电技术有限公司 | Image display method, device and storage medium |
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