CN117238227B - OLED panel power saving method and device, computer equipment and storage medium - Google Patents
OLED panel power saving method and device, computer equipment and storage medium Download PDFInfo
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Abstract
The invention relates to a power saving method and device of an OLED panel, computer equipment and a storage medium, wherein the power saving method of the OLED panel comprises the following steps: acquiring a voltage value of a pixel of an image to be displayed of an OLED panel; performing image solid color detection judgment according to the voltage value of the pixel of the image to be displayed; and switching the pixels which do not develop color to a power-saving system according to the detection and judgment result of the pure color of the image. According to the invention, the pure color detection judgment is carried out before the voltage adjustment of the OLED panel, so that the stable display of the OLED panel picture can be realized while the power consumption is reduced, and meanwhile, the power consumption of the OLED panel is effectively reduced, so that the service life of the OLED panel is prolonged, and the power-saving device, the computer equipment and the computer readable storage medium of the OLED panel with power saving and prolonged service life are provided.
Description
Technical Field
The present invention relates to the field of OLED panel display technologies, and in particular, to a power saving method and apparatus for an OLED panel, a computer device, and a storage medium.
Background
The organic light emitting diode (OrganicLightEmittingDiode, OLED) display panel has the advantages of low energy consumption, self-luminescence and the like, and is one of the hot spots in the field of flat panel display panel research. The OLED is self-luminous and can be independently controlled to enable each pixel to be completely turned off, so that a better display effect is achieved, and less power is consumed.
In the prior art, power saving for the OLED display panel requires an additional circuit design, which itself causes additional power loss. In addition, the conventional apparatus and method need to perform power output adjustment after detecting the current load of the power supply, so that the OLED display panel may make improper power adjustment. On the other hand, if the gray level of the next frame is far lower than that of the previous frame, the power supply will cause extra power loss of the OLED display panel due to the excessive current.
Accordingly, there is a need in the art for improvements.
Disclosure of Invention
The invention mainly aims to provide a power saving method, a power saving device, computer equipment and a storage medium of an OLED panel, so as to solve the problems in the background technology.
In order to achieve the above object, in a first aspect, the present invention provides a power saving method of an OLED panel, comprising the steps of:
acquiring a voltage value of a pixel of an image to be displayed of an OLED panel;
performing image solid color detection judgment according to the voltage value of the pixel of the image to be displayed;
according to the detection and judgment result of the pure color of the image, switching the pixels which do not develop color of the OLED panel to a power-saving mechanism; wherein, the power saving mechanism comprises that the brightness of the pixels in a static state or the color of the pixels close to black is reduced or the pixels are completely closed, so that the energy consumption of the pixels is reduced; the power saving mechanism comprises a pixel health monitoring and protecting mechanism for waking up and refreshing the pixels in a closed state for a long time.
In one implementation, the pixel health monitoring and protection mechanism specifically includes:
monitoring the color display capability and response speed of the pixel;
performing pixel health evaluation health degree according to the deviation degree of the pixel color display capability and the reduction degree of the response speed;
when detecting that the pixel state changes, the brightness of the relevant pixel is adjusted to be in a normal state, and repair and protection are carried out.
In one implementation, the pixel health monitoring and protection mechanism further includes: a threshold time for a low power state is preset, beyond which the pixel is awakened.
In one implementation manner, the acquiring the voltage value of the pixel of the image to be displayed of the OLED panel specifically includes: detecting an image to be displayed, and obtaining gray scale values of pixels of the image to be displayed; and searching a voltage parameter lookup table storing the corresponding relation between the gray scale value and the voltage value according to the gray scale value of the pixel, and obtaining the voltage value of each pixel.
In one implementation manner, the detecting and judging of the solid color of the image according to the voltage value of the pixel of the image to be displayed specifically includes: judging whether the voltage value of the pixel of the image to be displayed is 0 or not, if so, judging that the image to be displayed is a solid-color image; the solid color map includes an image in which the subpixels are displayed as any one of pure red, pure green, pure blue, pure white, pure black, and other single gray levels.
In one implementation manner, the detecting and judging of the solid color of the image according to the voltage value of the pixel of the image to be displayed specifically includes: performing edge detection on the image to be displayed to obtain an edge pixel voltage value of the image to be displayed; interpolation amplification is carried out on the edge pixel voltage value, and image pure color detection judgment is carried out according to the obtained edge pixel voltage value, so that the image to be displayed is judged to be a pure color image or a non-pure color image; the solid color map includes an image in which the subpixels are displayed as any one of pure red, pure green, pure blue, pure white, pure black, and other single gray levels.
In one implementation manner, the switching of the pixel that does not develop color to the power-saving system according to the detection and judgment result of the solid color of the image specifically includes: and when the image to be displayed is judged to be a pure color image, reducing the first power supply signal ELVDD and the second power supply signal ELVSS of the corresponding pixels of the OLED panel, and closing the pixels which do not develop color in the image to be displayed.
In one implementation, each pixel of an image to be displayed of the OLED panel is digitally dimmed according to a gamma function, including: according to R, G, B three-color OLED luminous efficiency and background brightness, a corresponding gamma curve is output through a DBV register, and the voltage and current value of the OLED panel for controlling brightness is adjusted, so that digital dimming of each pixel of an RGB image is realized.
In a second aspect, the invention further provides a power saving device of the OLED panel, which comprises a voltage acquisition module, a pure color detection module, a circuit adjustment module and a power saving module which are sequentially connected, wherein the voltage acquisition module is used for acquiring a voltage value of a pixel of an image to be displayed of the OLED panel; the solid color detection module is used for detecting and judging the solid color of the image according to the voltage value of the pixel of the image to be displayed; the circuit adjusting module is used for switching the pixels which are not developed on the OLED panel to a power-saving system according to the detection and judgment result of the pure color of the image; the power saving module is used for reducing brightness or completely turning off the pixels in a static state or with colors close to black.
In a third aspect, the present invention further provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the power saving method of the OLED panel described in any one of the above when executing the computer program.
In a fourth aspect, the present invention also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the power saving method of an OLED panel as described in any one of the above.
According to the power saving method of the OLED panel, the voltage value of the pixel of the image to be displayed of the OLED panel is obtained, the image solid color detection judgment is carried out according to the voltage value of the pixel of the image to be displayed, and finally, when the image to be displayed is judged to be the solid color image according to the image solid color detection judgment result, the pixel of the image to be displayed is switched to a power saving mechanism or the voltage value is regulated, the solid color detection judgment is carried out before the voltage regulation of the OLED panel, the stable display of the panel picture is realized while the power consumption is reduced, and meanwhile, the power consumption of the OLED panel is effectively reduced, so that the service life of the OLED panel is prolonged; meanwhile, by setting the power saving mechanism and the pixel health monitoring and protecting mechanism, the consistency of image quality and user experience is maintained when the power saving mechanism is switched to a low-energy-consumption state, and the power saving device, the computer equipment and the computer readable storage medium of the OLED panel with power saving, prolonged service life and good use consistency are provided.
Drawings
FIG. 1 is a schematic diagram illustrating steps of a power saving method of an OLED panel according to an embodiment of the present invention;
fig. 2 is a specific step schematic diagram of step S01 shown in fig. 1;
FIG. 3 is a block diagram illustrating a power saving device of an OLED panel according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of a computer device according to an embodiment of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a power saving method of an OLED panel according to an embodiment of the invention, and the invention provides a power saving method of an OLED panel, which includes the following steps:
step S01, obtaining a voltage value of a pixel of an image to be displayed of an OLED panel;
step S02, detecting and judging pure colors of the image according to the voltage values of the pixels of the image to be displayed;
and S03, switching the pixel which does not develop color to a power-saving system according to the detection and judgment result of the pure color of the image.
According to the power saving method of the OLED panel, the pure color detection judgment is firstly carried out on the image to be displayed in the pixel adjustment process of the OLED panel, so that the pixel which does not develop color can be adjusted in the state that the OLED panel displays a black picture or displays a pure color image in the standby state, and lower power consumption is provided to achieve the effect of saving power.
Referring to fig. 1 and fig. 2 in combination, fig. 2 is a schematic diagram showing steps of step S01 shown in fig. 1, and in an embodiment of the present invention, in step S01, the method specifically includes:
step S11, detecting an image to be displayed, and acquiring gray scale values of pixels of the image to be displayed;
step S12, a voltage parameter lookup table storing the corresponding relation between the gray scale value and the voltage value is searched according to the gray scale value of the pixel, and the voltage value of each pixel is obtained.
The OLED panel is composed of innumerable pixels, each pixel is composed of three red, green and blue sub-pixels, and each pixel displays colors by adjusting the color ratios of the red, green and blue sub-pixels. The voltage parameter lookup table stores the corresponding relation between the gray scale value and the voltage. In this step, the gray-scale value of each pixel of the image to be displayed is obtained, and the voltage value or the pixel value of each pixel is determined according to the gray-scale value of the pixel at the same time. In other embodiments, the RGB values of each pixel may be directly obtained, so as to perform pure color detection and determination of the image to be displayed. The voltage value of each pixel is obtained to judge the property of the subsequent image to be displayed.
In step S02, two methods for detecting and judging solid color of an image are provided in this embodiment, one of the two methods is to judge whether the voltage value of the pixel of the image to be displayed is 0, if yes, the image to be displayed is judged to be a solid color image; the solid color map includes an image in which the subpixels are displayed as any one of pure red, pure green, pure blue, pure white, pure black, and other single gray levels.
The other method is to perform edge detection on the image to be displayed and obtain an edge pixel voltage value of the image to be displayed; and carrying out interpolation amplification on the edge pixel voltage value, and carrying out image pure color detection judgment according to the obtained edge pixel voltage value to judge whether the image to be displayed is a pure color image or a non-pure color image.
Specifically, when edge detection is performed on the image to be displayed, acquiring pixel edge information of an image range of a 4*4 area; and (3) carrying out 2 x 2 times interpolation amplification on the edge pixels, and judging the image type of the region to be a solid color image or a non-solid color image according to the obtained pixel edge information and the voltage value of the pixels obtained in the step S01. That is, in this step, it can be determined whether the type of the area image is a solid color image including an image in which subpixels are displayed as any one of solid red, solid green, solid blue, solid white, solid black, and other single gray scale. That is, when the RGB value= (255, 0) of the image to be displayed is a pure red image, the RGB value= (0, 255, 0) is a pure green image, the RGB value= (0, 255) is a pure blue image, and the RGB value= (0, 0) is a pure black image. Further, when the image to be displayed is subjected to edge detection, the image to be displayed is subjected to canny_H mode.
In step S03, when the image to be displayed is determined to be a pure color chart, the first power signal ELVDD and the second power signal ELVSS of the corresponding pixels of the OLED panel are reduced, and the pixels in the image to be displayed that do not develop color are turned off. Since in a solid-color image, RGB values of three primary colors may have a component value of 0, and the primary colors not displayed are turned off by voltages of the first power signal ELVDD and the second power signal ELVSS of their corresponding pixels, and the pixels are switched to a power saving mechanism. In addition, the pixel which does not develop color can be switched to a power-saving block which is additionally planned by the analog circuit, so that lower power consumption can be provided to achieve the effect of saving more power. The power saving mechanism is in accordance with the 802.3az energy saving Ethernet standard established by the institute of electrical and electronics engineers. The first power supply signal ELVDD is a positive voltage of the panel body, the second power supply signal ELVSS is a negative voltage of the panel body, and the positive voltage of the panel body and the negative voltage of the panel body act together to ensure that the OLED panel normally displays images.
In step S03, when the image to be displayed is determined to be a non-pure color image, digital dimming is performed on each pixel of the image to be displayed of the OLED panel according to the gamma function. Specifically, when the image to be displayed is determined to be a non-pure color image, digital dimming is performed on each pixel of the image to be displayed of the OLED panel according to a gamma function, a gamma compensation voltage of the corresponding pixel is output, and the light emitting brightness of the image to be displayed is adjusted. More specifically, a gamma curve corresponding to each pixel of the RGB image is acquired, and the gamma curve is trimmed by the DBV register. The OLED panel usually has three-color diodes of R (red), G (green), and B (blue), whose light-emitting efficiency is individually different, so that the three-color voltage ranges of R (red), G (green), and B (blue) are too different, and in order to meet the accurate gamma compensation value, the gamma output voltages thereof can be adjusted, so that the individual light-emitting brightness of R (red), G (green), and B (blue) is not too different by adjustment, so that the color presented is more similar to the real color. In the solid-color image, the adjustment of RGB voltages is not needed between pixels, so that a power saving mechanism can be directly connected into the solid-color pixels, and the digital dimming step is reduced.
Specifically, the power saving mechanism comprises the steps of reducing brightness or completely closing the pixels in a static state or with colors close to black, so that energy consumption is reduced; the power saving mechanism comprises a pixel health monitoring and protecting mechanism for waking up and refreshing the pixels in a closed state for a long time.
The pixel health monitoring and protecting mechanism specifically comprises:
monitoring the color display capability and response speed of the pixel;
performing pixel health evaluation health degree according to the deviation degree of the pixel color display capability and the reduction degree of the response speed;
when detecting that the pixel state changes, the brightness of the relevant pixel is adjusted to be in a normal state, and repair and protection are carried out.
The pixel health monitoring and protecting mechanism further comprises the following steps: a threshold time for a low power state is preset, and the pixel is awakened after the threshold time is exceeded. This arrangement can avoid potential problems that may be caused to the OLED screen by long-term low power consumption mode, for protecting the pixels of the OLED panel that are not colored.
It should be noted that when each pixel is digitally dimmed, the brightness and color of the screen should remain consistent, avoiding visible flicker caused by switching to the power saving mode. Specifically, by beginning to decrease at a slower rate as each pixel is digitally dimmed, and then gradually increasing, in one implementation, the pixel remains unchanged for the first 10 seconds, decreasing the pixel brightness by 2% per second, and then increasing the reduced brightness by 5% per second.
Referring to fig. 3, fig. 3 is a block diagram illustrating a power saving device of an OLED panel according to an embodiment of the invention. The embodiment also provides a power saving device 100 of an OLED panel, which includes a voltage acquisition module 10, a solid color detection module 20, a circuit adjustment module 30, and a power saving module 40, wherein the voltage acquisition module 10 is configured to acquire a voltage value of a pixel of an image to be displayed of the OLED panel; the solid color detection module 20 is configured to perform solid color detection and judgment of an image according to a voltage value of a pixel of the image to be displayed; the circuit adjusting module 30 is configured to switch the pixels that do not develop color on the OLED panel to a power-saving mechanism according to the detection and judgment result of the solid color of the image; the power saving module 40 is used to reduce the brightness or turn off completely for the pixels in the rest state or the color near black.
Referring to fig. 4, fig. 4 is a schematic block diagram of a computer device according to an embodiment of the invention. The embodiment of the invention also provides a computer device, which can be a server, and the internal structure of the computer device can be shown in fig. 4. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the computer is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing voltage data and the like. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements a power saving method for an OLED panel.
It will be appreciated by those skilled in the art that the architecture shown in fig. 4 is merely a block diagram of a portion of the architecture in connection with the present inventive arrangements and is not intended to limit the computer devices to which the present inventive arrangements are applicable.
An embodiment of the present invention further provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor implements a power saving method of an OLED panel. It is understood that the computer readable storage medium in this embodiment may be a volatile readable storage medium or a nonvolatile readable storage medium.
In summary, in the power saving method, the power saving device, the computer device and the computer readable storage medium for the OLED panel provided by the embodiments of the present invention, by acquiring the voltage value of the pixel of the image to be displayed of the OLED panel, performing the image pure color detection and judgment according to the voltage value of the pixel of the image to be displayed, and finally switching the pixel of the image to be displayed to the power saving mechanism when the image to be displayed is judged to be a pure color image according to the image pure color detection and judgment result, performing the pure color detection and judgment before the voltage adjustment of the OLED panel, the stable display of the panel image can be realized while the power consumption is reduced, and the power consumption of the OLED panel is effectively reduced, so that the service life of the OLED panel is also prolonged; meanwhile, by setting the power saving mechanism and the pixel health monitoring and protecting mechanism, the consistency of image quality and user experience is maintained when the power saving mechanism is switched to a low-energy-consumption state, and the power saving device, the computer equipment and the computer readable storage medium of the OLED panel with power saving, prolonged service life and good use consistency are provided.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium provided by the present invention and used in embodiments may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual speed data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
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, apparatus, article, or method 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, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, apparatus, article or method that comprises the element.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (5)
1. The power saving method of the OLED panel is characterized by comprising the following steps of:
acquiring a voltage value of a pixel of an image to be displayed of an OLED panel;
performing image solid color detection judgment according to the voltage value of the pixel of the image to be displayed;
according to the detection and judgment result of the pure color of the image, switching the pixels which do not develop color of the OLED panel to a power-saving mechanism; wherein, the power saving mechanism comprises that the brightness of the pixels in a static state or the color of the pixels close to black is reduced or the pixels are completely closed, so that the energy consumption of the pixels is reduced; the power saving mechanism comprises a pixel health monitoring and protecting mechanism and is used for waking up and refreshing the pixels in a closed state for a long time;
the pixel health monitoring and protecting mechanism specifically comprises:
monitoring the color display capability and response speed of the pixel;
performing pixel health evaluation health degree according to the deviation degree of the pixel color display capability and the reduction degree of the response speed;
when detecting that the pixel state changes, the brightness of the relevant pixel is adjusted to be in a normal state for repair and protection;
the pixel health monitoring and protecting mechanism further comprises the following steps: presetting a threshold time for continuously maintaining a low-energy consumption state, and waking up pixels when the threshold time is exceeded;
the detecting and judging of the solid color of the image according to the voltage value of the pixel of the image to be displayed specifically comprises the following steps:
judging whether the voltage value of the pixel of the image to be displayed is 0 or not, if so, judging that the image to be displayed is a solid-color image; or:
performing edge detection on the image to be displayed to obtain an edge pixel voltage value of the image to be displayed;
interpolation amplification is carried out on the edge pixel voltage value, and image pure color detection judgment is carried out according to the obtained edge pixel voltage value, so that the image to be displayed is judged to be a pure color image or a non-pure color image;
the solid color map includes an image in which the subpixels are displayed as any one of pure red, pure green, pure blue, pure white, pure black, and other single gray levels.
2. The power saving method of an OLED panel according to claim 1, wherein the acquiring the voltage value of the pixel of the image to be displayed of the OLED panel specifically includes:
detecting an image to be displayed, and obtaining gray scale values of pixels of the image to be displayed;
and a voltage parameter lookup table for storing voltage values corresponding to the gray scale values in advance, and searching the corresponding voltage values according to the table and the gray scale values of the pixels.
3. The power saving method of an OLED panel according to claim 1 or 2, wherein the switching of the pixels of the OLED panel that do not develop color to the power saving system according to the determination result of the detection of the solid color of the image specifically comprises:
when the image to be displayed is judged to be a pure color image, reducing a first power signal ELVDD and a second power signal ELVSS of corresponding pixels of the OLED panel, and closing pixels which do not develop color in the image to be displayed; and when the image to be displayed is judged to be a non-pure color image, respectively carrying out digital dimming on each pixel of the image to be displayed of the OLED panel according to a gamma function.
4. A computer device comprising a memory and a processor, the memory having stored therein a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the power saving method of the OLED panel of any one of claims 1 to 3.
5. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the power saving method of an OLED panel as claimed in any one of claims 1 to 3.
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| US20140043357A1 (en) * | 2011-04-08 | 2014-02-13 | Sharp Kabushiki Kaisha | Display device and display method |
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| CN207473250U (en) * | 2017-11-29 | 2018-06-08 | 信利光电股份有限公司 | A kind of backlight and a kind of liquid crystal display |
| CN110220674A (en) * | 2019-04-25 | 2019-09-10 | 深圳大学 | Display screen health performance appraisal procedure and device |
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