CN105632407B - A kind of display adjusting method and mobile terminal of AMOLED display screens - Google Patents
A kind of display adjusting method and mobile terminal of AMOLED display screens Download PDFInfo
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- CN105632407B CN105632407B CN201610202326.1A CN201610202326A CN105632407B CN 105632407 B CN105632407 B CN 105632407B CN 201610202326 A CN201610202326 A CN 201610202326A CN 105632407 B CN105632407 B CN 105632407B
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- 229920001621 AMOLED Polymers 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 14
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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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]
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a kind of display adjusting methods and mobile terminal of AMOLED display screens, to provide new solution for the power consumption of reduction AMOLED display screens.Method is：The second gamma curve is replaced using the first gamma curve when mobile terminal determination meets preset condition, the gamma value of first gamma curve is more than the gamma value of second gamma curve, and second gamma curve is the gamma curve of the display brightness of current control active matrix organic light-emitting diode AMOLED display screens；The mobile terminal is adjusted the display brightness of the AMOLED display screens using first gamma curve.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a display adjusting method of an AMOLED display screen and a mobile terminal.
Background
An AMOLED (Active-matrix organic light emitting diode, also called as Active matrix organic light emitting diode) display screen is favored by more and more mobile phones and PAD manufacturers due to its bright color and light and thin structure. The AMOLED display screen has the advantages that the portable intelligent terminal is lighter and thinner due to the structural characteristics of the AMOLED display screen. At present, a mainstream thin film transistor-liquid crystal display (TFT-LCD) is passive light emitting, more than 60% of the power consumption of a module is consumed in a backlight, and the space which can be optimized in the aspect of power consumption is not large.
The difference with the TFT-LCD is that the AMOLED is an active light emitting display screen, the AMOLED has no backlight, the power consumption is mainly consumed by the driving circuit, the power consumption can change with the picture content, and the existing rule is as follows: when the display picture is black, the power consumption is low, and when the black-white proportion of the display picture is relative, the power consumption is increased, and the power consumption of the pure white background reaches a maximum value.
At present, the main mode for reducing the power consumption of the AMOLED is to adjust the content of the displayed image, and if the black image can reduce the power consumption to the greatest extent, the black background white characters or the color characters are adopted on the common interface, and the power consumption of the module can be reduced by 50% -80% on average. Also, by avoiding displaying pure white, and using a gray-scale image of approximately white instead of a pure white image, on average, 20% of the power consumption can be reduced.
Therefore, the conventional method for reducing the power consumption of the AMOLED needs to adjust colors included in a display image, and needs to adjust parameters inside a display module, so that the method is complex to implement and has high cost.
Disclosure of Invention
The embodiment of the invention provides a display adjustment method of an AMOLED display screen and a mobile terminal, which are used for providing a new solution for reducing the power consumption of the AMOLED display screen.
The embodiment of the invention provides the following specific technical scheme:
in a first aspect, an embodiment of the present invention provides a display adjustment method for an AMOLED display screen, including:
the method comprises the steps that when the mobile terminal determines that a preset condition is met, a first gamma curve is adopted to replace a second gamma curve, the gamma value of the first gamma curve is larger than that of the second gamma curve, and the second gamma curve is a gamma curve which currently controls the display brightness of the AMOLED display screen;
and the mobile terminal adjusts the display brightness of the AMOLED display screen by adopting the first gamma curve.
Optionally, the determining, by the mobile terminal, that a preset condition is met includes:
the mobile terminal determines that the electric quantity of the battery is lower than a set threshold value; or,
the mobile terminal determines to switch to a power saving mode.
Optionally, the method further comprises:
and the mobile terminal adjusts the display saturation of the AMOLED display screen by adopting the compensation coefficient matrix corresponding to the first gamma curve.
Optionally, the adjusting, by the mobile terminal, the display saturation of the AMOLED display screen by using a compensation coefficient matrix corresponding to the first gamma curve includes:
and the mobile terminal calculates the product of the saturation component of the display image of the AMOLED display screen after the brightness is adjusted and the compensation coefficient matrix, and the result of the product is the result of adjusting the display saturation of the AMOLED display screen.
Optionally, the gamma value of the first gamma curve is 2.4, and the gamma value of the second gamma curve is 2.2.
In a second aspect, an embodiment of the present invention further provides a mobile terminal, including:
the processing module is used for determining that a first gamma curve is adopted to replace a second gamma curve when a preset condition is met, wherein the gamma value of the first gamma curve is greater than that of the second gamma curve, and the second gamma curve is a gamma curve which currently controls the display brightness of the AMOLED display screen;
and the adjusting module is used for adjusting the display brightness of the AMOLED display screen by adopting the first gamma curve.
Optionally, the processing module determines that a preset condition is met, specifically:
determining that the battery power is lower than a set threshold; or,
it is determined to switch to the power saving mode.
Optionally, the adjusting module is further configured to:
and adjusting the display saturation of the AMOLED display screen by adopting the compensation coefficient matrix corresponding to the first gamma curve.
Optionally, the adjusting module is further configured to:
and calculating the product of the saturation component of the display image of the AMOLED display screen after the brightness adjustment and the compensation coefficient matrix, wherein the result of the product is the result of adjusting the display saturation of the AMOLED display screen.
Optionally, the gamma value of the first gamma curve is 2.4, and the gamma value of the second gamma curve is 2.2.
Based on the technical scheme, in the embodiment of the invention, the first gamma curve is adopted to replace the second gamma curve, and the display brightness of the AMOLED display screen is adjusted, so that the dark gray scale part of the image displayed by the AMOLED display screen is expanded, the bright gray scale part is compressed, the whole image becomes dark, real-time calculation is not needed, the implementation is simple and practical, the colors contained in the displayed image do not need to be adjusted, the parameters in the display module do not need to be adjusted, the cost is reduced, the power consumption of the mobile terminal is effectively reduced, and the cruising ability of the mobile terminal is improved.
Drawings
FIG. 1 is a diagram comparing power consumption of AMOLED and a common TFT-LCD;
fig. 2 is a schematic flow chart of a method for adjusting display of an AMOLED display screen by a mobile terminal in an embodiment of the present invention;
FIG. 3 is a diagram illustrating a gamma curve according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a comparison of display effects before and after adjusting a gamma curve according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mobile terminal in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Fig. 1 is a comparison graph of power consumption of the AMOLED and a common TFT-LCD, where the content of the display image has no influence on the power consumption of the TFT-LCD, and the power consumption of the AMOLED changes according to the content of the display image, and the change rule is: as the gray scale of the display image increases, power consumption increases. A plurality of gray scales are extracted for power consumption test, and the relation between the obtained power consumption and the gray scale of the displayed image is shown in a table 1:
TABLE 1
| 100cd/m2 | Non-plug screen | 0 black | 47 Ash | 147 ash | 207 ash | 255 white |
| Average power consumption mA | 68 | 116 | 135 | 155 | 159 | 206 |
Analysis shows that the lower the gray scale of the AMOLED display image, the more power is saved.
Based on the above, the embodiment of the invention properly reduces the brightness of the displayed image within the range allowed by the brightness of the AMOLED display screen, so as to achieve the purpose of reducing power consumption.
In the embodiment of the present invention, as shown in fig. 2, a detailed process of the mobile terminal adjusting the display of the AMOLED display screen is as follows:
step 201: and the mobile terminal replaces a second gamma curve with a first gamma curve when determining that a preset condition is met, wherein the gamma value of the first gamma curve is greater than that of the second gamma curve, and the second gamma curve is the gamma curve currently controlling the display brightness of the AMOLED display screen.
In implementation, the mobile terminal determines that the preset condition is satisfied, including but not limited to the following two conditions:
first, the mobile terminal determines that the battery power is below a set threshold.
Specifically, the preset threshold may be set before the mobile terminal leaves the factory, or may be set by the user through an operation interface displayed by the mobile terminal.
Second, the mobile terminal determines to switch to a power saving mode.
Specifically, the mobile terminal determines to switch to the power saving mode after monitoring an instruction for switching to the power saving mode, which is input by a user through an operation interface. Or, the mobile terminal switches to the power saving mode when monitoring that the battery power is lower than a set threshold value according to default setting.
In one embodiment, the first gamma curve has a gamma value of 2.4 and the second gamma curve has a gamma value of 2.2. Wherein the first gamma curve is formulated as: y is x2.4The second gamma curve is formulated as y ═ x2.2Where x represents gray scale and y represents luminance.
In practical application, the process of obtaining the gamma curve stored by the mobile terminal is as follows: and manufacturing a pure color picture with the same resolution as the display screen by adopting a 32-gray-scale image card, guiding the pure color picture into equipment for display, testing the brightness displayed by each gray scale, drawing a gamma curve, and configuring the parameters of the gamma curve in the mobile terminal after calibration.
Step 202: and the mobile terminal adjusts the display brightness of the AMOLED display screen by adopting the first gamma curve.
Fig. 3 is a schematic diagram of a gamma curve, which is a non-linear parameter for reflecting the display brightness of the display screen and the brightness of the input signal. The gamma curve can ensure that the gray scale of the display screen is uniformly distributed, the image brightness is uniform, and the gradation is clear on the display effect.
In the embodiment of the invention, the first gamma curve is used for replacing the second gamma curve, the display brightness of the AMOLED display screen is adjusted, so that the dark gray scale part of the image displayed by the AMOLED display screen is expanded, the bright gray scale part is compressed, and the whole image is darkened, and fig. 4 is a schematic diagram showing the comparison of the display effects before and after the gamma curve is adjusted.
Specifically, the mobile terminal writes the data of the first gamma curve into the display circuit at the bottom layer of the AMOLED through the interface corresponding to the second gamma curve, that is, the second gamma curve can be replaced, so as to adjust the display brightness of the AMOLED display screen.
The scheme provided by the embodiment of the invention does not need to carry out real-time calculation, is simple and practical to realize, does not need to adjust the color contained in the display image, does not need to adjust the parameters in the display module, reduces the cost, effectively reduces the power consumption of the mobile terminal and improves the cruising ability of the mobile terminal.
In practical application, because the AMOLED display screen is self-luminous, human eyes can feel that the AMOLED display screen is brighter under the same brightness as that of the TFT-LCD, and meanwhile, the color gamut range of the AMOLED display screen can reach 100%, and the saturation is higher, after the gamma curve is adjusted to reduce the brightness of a display image, the color is distorted due to the higher saturation of the same color compared with that of a common LCD, so that the display image quality is reduced, optionally, the mobile terminal obtains a compensation coefficient matrix corresponding to the first gamma curve, and adjusts the display saturation of the AMOLED display screen by using the compensation coefficient matrix, in order to reduce the display image quality loss. Wherein the compensation coefficient matrix can be determined by testing.
Specifically, after brightness of a display image of the AMOLED display screen is adjusted by the mobile terminal through the first gamma curve, a product of a saturation component of the display image after brightness adjustment and a compensation coefficient matrix corresponding to the first gamma curve is calculated, and a result obtained by the product is a result of adjusting the display saturation of the AMOLED display screen.
Based on the same inventive concept, the embodiment of the present invention further provides a mobile terminal, and the specific implementation of the mobile terminal may refer to the description of the foregoing method embodiment, and repeated details are not repeated, as shown in fig. 5, the mobile terminal mainly includes:
the processing module 501 determines that a second gamma curve is replaced by a first gamma curve when a preset condition is met, wherein a gamma value of the first gamma curve is greater than a gamma value of the second gamma curve, and the second gamma curve is a gamma curve currently controlling the display brightness of the active matrix organic light emitting diode AMOLED display screen;
an adjusting module 502, configured to adjust the display brightness of the AMOLED display screen by using the first gamma curve.
Optionally, the processing module determines that a preset condition is met, specifically:
determining that the battery power is lower than a set threshold; or,
it is determined to switch to the power saving mode.
Optionally, the adjusting module is further configured to:
and adjusting the display saturation of the AMOLED display screen by adopting the compensation coefficient matrix corresponding to the first gamma curve.
Optionally, the adjusting module is further configured to:
and calculating the product of the saturation component of the display image of the AMOLED display screen after the brightness adjustment and the compensation coefficient matrix, wherein the result of the product is the result of adjusting the display saturation of the AMOLED display screen.
Optionally, the gamma value of the first gamma curve is 2.4, and the gamma value of the second gamma curve is 2.2.
Based on the technical scheme, in the embodiment of the invention, the first gamma curve is adopted to replace the second gamma curve, and the display brightness of the AMOLED display screen is adjusted, so that the dark gray scale part of the image displayed by the AMOLED display screen is expanded, the bright gray scale part is compressed, the whole image becomes dark, real-time calculation is not needed, the implementation is simple and practical, the colors contained in the displayed image do not need to be adjusted, the parameters in the display module do not need to be adjusted, the cost is reduced, the power consumption of the mobile terminal is effectively reduced, and the cruising ability of the mobile terminal is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A display adjustment method of an AMOLED display screen is characterized by comprising the following steps:
the method comprises the steps that when the mobile terminal determines that a preset condition is met, a first gamma curve is adopted to replace a second gamma curve, the gamma value of the first gamma curve is larger than that of the second gamma curve, and the second gamma curve is a gamma curve which currently controls the display brightness of the AMOLED display screen; the determination that the preset condition is met comprises the step that the mobile terminal determines that the battery power is lower than a set threshold; or the mobile terminal determines to switch to a power saving mode;
the mobile terminal adjusts the display brightness of the AMOLED display screen by adopting the first gamma curve;
and the mobile terminal calculates the product of the saturation component of the display image of the AMOLED display screen after the brightness is adjusted and the compensation coefficient matrix corresponding to the first gamma curve, and adjusts the display saturation of the AMOLED display screen by using the result of the product.
2. The method of claim 1, wherein the first gamma curve has a gamma value of 2.4 and the second gamma curve has a gamma value of 2.2.
3. A mobile terminal, comprising:
the processing module is used for determining that a first gamma curve is adopted to replace a second gamma curve when a preset condition is met, wherein the gamma value of the first gamma curve is greater than that of the second gamma curve, and the second gamma curve is a gamma curve which currently controls the display brightness of the AMOLED display screen; the determination that the preset condition is met comprises determining that the battery power is lower than a set threshold; or determining to switch to a power saving mode;
the adjusting module is used for adjusting the display brightness of the AMOLED display screen by adopting the first gamma curve; and calculating the product of the saturation component of the display image of the AMOLED display screen after the brightness adjustment and the compensation coefficient matrix corresponding to the first gamma curve, and adjusting the display saturation of the AMOLED display screen by using the result of the product.
4. The mobile terminal of claim 3, wherein the gamma value of the first gamma curve is 2.4 and the gamma value of the second gamma curve is 2.2.
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| CN105976760B (en) * | 2016-06-30 | 2018-12-04 | 维沃移动通信有限公司 | A kind of brightness adjusting method and mobile terminal of terminal screen |
| CN106502609B (en) * | 2016-10-31 | 2019-11-15 | 维沃移动通信有限公司 | A kind of display brightness method of adjustment and mobile terminal |
| CN106502610B (en) * | 2016-10-31 | 2019-10-18 | 维沃移动通信有限公司 | A kind of display brightness method of adjustment and mobile terminal |
| WO2018107405A1 (en) * | 2016-12-14 | 2018-06-21 | 华为技术有限公司 | Amoled screen power consumption control method and device |
| CN109767722B (en) * | 2017-11-09 | 2021-03-05 | 上海和辉光电股份有限公司 | OLED module Gamma adjusting method and device |
| CN113012623B (en) * | 2019-12-20 | 2022-07-15 | 西安诺瓦星云科技股份有限公司 | Display screen brightness adjusting method and device |
| CN112614461B (en) * | 2020-12-21 | 2022-01-07 | 昆山国显光电有限公司 | Compensation method and device of display panel |
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| CN101251985A (en) * | 2007-02-23 | 2008-08-27 | 三星Sdi株式会社 | Organic electroluminescence display (oled) and driving methods thereof |
| CN103201335A (en) * | 2010-11-10 | 2013-07-10 | 大陆轮胎德国有限公司 | Pneumatic tyres for utility vehicles |
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| KR100844775B1 (en) * | 2007-02-23 | 2008-07-07 | 삼성에스디아이 주식회사 | Organic light emitting display device |
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| CN101093635A (en) * | 2006-06-19 | 2007-12-26 | 三星电子株式会社 | Image processing apparatus and method for decreasing power consumption of self-luminescence display |
| CN101251985A (en) * | 2007-02-23 | 2008-08-27 | 三星Sdi株式会社 | Organic electroluminescence display (oled) and driving methods thereof |
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Address after: Shandong City, Qingdao Province, Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Country or region after: China Address before: Shandong City, Qingdao Province, Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. Country or region before: China |
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