CN104575448A - Backlight adjustment method and backlight adjustment device for display device - Google Patents
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Abstract
The invention is applicable to the technical field of display and provides a backlight adjustment method and a backlight adjustment device for a display device. The method comprises the following steps: respectively acquiring the difference multiple of light intensity value measured by an ambient light sensor built in a terminal relative to the light intensity value measured by an illuminometer according to each preset illuminance level; acquiring the actual measured light intensity value of the ambient light sensor; and adjusting the backlight brightness of the display device according to the actual measured light intensity value and the preset illuminance level at the light intensity value. A proper backlight adjustment scheme is provided for different types of terminal equipment, so that the difference between the ambient light intensity measured by the ambient light sensor and the real ambient light intensity is eliminated, the backlight brightness of the display device can be adjusted to a proper brightness value, the condition that the display screen is extremely bright or the brightness is insufficient is avoided, and the display effect is guaranteed.
Description
Technical field
The invention belongs to display technique field, particularly relate to a kind of backlight adjusting method and device of display device.
Background technology
At present, what to realize based on the ambient light sensor being arranged on interior of mobile phone to the adjustment of the backlight of mobile phone, the varying environment light intensity value that ambient light sensor measurement obtains all can a direct corresponding light-source brightness value, adjust the brightness of mobile phone screen light source according to this light-source brightness value, thus realize the adjustment to screen luminance of mobile phone along with the change of ambient light intensity.
But, for the mobile phone of different model, be subject to the impact of the many factors such as penetrability of glass of the arrangement direction of ambient light sensor on cell phone mainboard, shade ambient light sensor, all there is difference to a certain extent in the ambient light intensity recorded by ambient light sensor and real ambient light intensity, easily cause the backlight illumination of mobile phone screen cannot be adjusted to a suitable brightness value, cause mobile phone screen to cross bright or luminance shortage, affect display effect.
Summary of the invention
The object of the embodiment of the present invention is the backlight adjusting method and the device that provide a kind of display device, is intended to solve prior art and easily causes screen to cross bright or luminance shortage, affect the problem of display effect.
The embodiment of the present invention is achieved in that a kind of backlight adjusting method of display device, comprising:
Under each default level of illumination, the difference multiple of the light intensity value that the light intensity value that the ambient light sensor measurement obtaining terminal built-in respectively obtains obtains relative to illuminometer measurement;
Obtain the actual light intensity value recorded of described ambient light sensor;
Based on the described difference multiple that the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value is corresponding, adjust the backlight illumination of described display device.
Another object of the embodiment of the present invention is the backlight regulation apparatus providing a kind of display device, comprising:
First acquiring unit, under each default level of illumination, the difference multiple of the light intensity value that the light intensity value that the ambient light sensor measurement obtaining terminal built-in respectively obtains obtains relative to illuminometer measurement;
Second acquisition unit, for obtaining the actual light intensity value recorded of described ambient light sensor;
Adjustment unit, for based on described difference multiple corresponding to the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value, adjusts the backlight illumination of described display device.
The embodiment of the present invention provides suitable backlight Adjusted Option for dissimilar terminal device, to eliminate the difference between ambient light intensity and real ambient light intensity that ambient light sensor records, ensure that the backlight illumination of display device can be adjusted to a suitable brightness value, avoid display screen to cross bright or luminance shortage, ensure that display effect.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the backlight adjusting method of the display device that the embodiment of the present invention provides;
Fig. 2 is the specific implementation process flow diagram of the backlight adjusting method S103 of the display device that the embodiment of the present invention provides;
Fig. 3 is the specific implementation process flow diagram of the backlight adjusting method S202 of the display device that the embodiment of the present invention provides;
Fig. 4 is the specific implementation process flow diagram of the backlight adjusting method S202 of the display device that another embodiment of the present invention provides;
Fig. 5 is the structured flowchart of the backlight regulation apparatus of the display device that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the present embodiment, described display device, the terminal device (such as mobile phone, flat board, the notebook computer that possess Presentation Function can be positioned at, etc.) among, display device can comprise display panel, optionally, can adopt liquid crystal display (Liquid Crystal Display, LCD), the form such as Organic Light Emitting Diode (OrganicLight-Emitting Diode, OLED) configures display panel.
Fig. 1 shows the realization flow of the backlight adjusting method of the display device that the embodiment of the present invention provides, and details are as follows:
In S101, under each default level of illumination, the difference multiple of the light intensity value that the light intensity value that the ambient light sensor measurement obtaining terminal built-in respectively obtains obtains relative to illuminometer measurement.
Wherein, can by the design requirement of technician according to reality, the intensity of illumination of different size is divided into several default level of illumination, such as, divide 0 ~ 1 according to the value size of intensity of illumination, 2 ~ 260,261 ~ 1025,1026 ~ 8300, these five level of illumination of 8300+, the corresponding screen brightness value of each level of illumination, such as, screen brightness value corresponding to above five level of illumination is respectively 8,50,100,210 and the screen maximum brightness value that can reach.
It should be noted that, screen intensity is produced by the light-source brightness of display device (backlight illumination namely described in the invention process), but the existence of the factor such as penetrability due to display panel, screen intensity and backlight illumination are also unequal, and dissimilar terminal device, the screen intensity that identical backlight illumination produces may be different, and the maximal value of backlight illumination is 255, and the maximal value of screen intensity can far more than 255.
In the present embodiment, the different difference multiple preset corresponding to level of illumination can get in the following manner:
First, the different etalon optical power angle value preset under level of illumination of setting, as shown in table 1, the first row is difference that the illuminometer (counting also known as lux) with standard determines and presets etalon optical power angle value under level of illumination.Then, under each etalon optical power angle value of setting, use the built-in ambient light sensor of the terminal device of same model to measure, get the light intensity value that this ambient light sensor measurement obtains.In order to the accuracy definitely measured, the terminal device of the same model of multiple stage can be used to measure simultaneously, such as, the terminal device measurement that in table 1, namely second row and the third line data are respectively two same models obtains, and fourth line data are the mean value of the light intensity data that this two station terminals device measuring obtains.Finally, by the data of the data of the first row divided by fourth line, namely obtain the difference multiple of the various criterion light intensity value set, the difference multiple of the etalon optical power angle value be under same default level of illumination can be averaging, the difference multiple that different default level of illumination is corresponding can be obtained.
Table 1
As can be seen from Table 1, for the terminal device of same model, difference multiple under varying environment light is different, when ambient light intensity is less than 30, then actual light intensity value is 6 times of the light intensity value that mobile phone environment optical sensor records, when ambient light intensity is 30 ~ 60, then actual light intensity value is 3.5 times of the light intensity value that mobile phone environment optical sensor records, when ambient light intensity is greater than 60, then actual light intensity value is 2.7 times of the light intensity value that mobile phone environment optical sensor records, pass through aforesaid operations, the light intensity value that can be measured by ambient light sensor very accurately compensates to the light intensity value close to reality.
In S102, obtain the actual light intensity value recorded of described ambient light sensor.
In S103, based on the described difference multiple that the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value is corresponding, adjust the backlight illumination of described display device.
The difference obtained based on S101 measurement presets the difference multiple under level of illumination, in the actual use procedure of terminal device, for the actual light intensity value recorded of ambient light sensor, can carry out numerical compensation by corresponding difference multiple.Particularly, as shown in Figure 2, the realization flow of S103 is:
In S201, determine the described default level of illumination residing for the described actual light intensity value recorded.
After getting the actual light intensity value recorded of ambient light sensor, contrast the default level of illumination pre-set, determine the default level of illumination residing for light intensity value, to extract the difference multiple corresponding to this default level of illumination.
In S202, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
In S203, the backlight illumination of described display device is adjusted to described target brightness value.
Actual for the ambient light sensor light intensity value recorded is multiplied by the difference multiple corresponding to the default level of illumination determined, backlight illumination after the target brightness value obtained is and have passed through numerical compensation, the backlight illumination of display device is adjusted to this target brightness value, can ensure that the brightness of display screen is coordinated mutually with current ambient light intensity, ensure display effect.
Based on the backlight Adjusted Option that above-described embodiment provides, when surround lighting changes too fast or changeable, in order to avoid the backlight flicker brought thus, can also adjust backlight intensity in the following manner:
As one embodiment of the present of invention, as shown in Figure 3, S202 is specially:
In S301, judge whether the described actual light intensity value recorded improves at least one grade according to the described default level of illumination determined.
In S302, when the described actual light intensity value recorded improves at least one grade, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
In the present embodiment, if the light intensity value obtained when pre-test improves at least one default level of illumination compared to the light intensity value that this pre-test obtains, namely, surround lighting grows from weak to strong change, so, backlight intensity adopts the mode changed step by step, and pace of change can be 50/s, that is, change per second 50 backlight value.
As another embodiment of the present invention, as shown in Figure 4, S202 is specially:
In S401, judge whether the described actual light intensity value recorded reduces at least two grades according to the described default level of illumination determined.
In S402, when the described actual light intensity value recorded reduces at least two grades, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
In the present embodiment, if surround lighting is by by force to weak change, in order to meet the perception custom of human eye, can not change step by step backlight intensity, but adopt the mode regulated across level, that is, if the light intensity value obtained when pre-test reduces at least two default level of illumination compared to the light intensity value that this pre-test obtains, then backlight intensity is adjusted.In order to meet better human eye perception custom, pace of change can lower than surround lighting grow from weak to strong change time backlight intensity pace of change, such as, be 4/s, that is, change per second 4 backlight value.Such as, current light intensity is 8300, and backlight intensity is the highest, if this Light intensity is reduced to 5000, owing to only reducing a default level of illumination, still do not carry out backlight adjustment, until light intensity is less than 1026, namely reduces two default level of illumination, just carry out backlight adjustment.
On Fig. 3 or basis embodiment illustrated in fig. 4, further, level and smooth in order to allow backlight switch, prevent backlight from shaking, after have passed through default time delay, then the backlight illumination of described display device can be adjusted to described target brightness value.Such as, when surround lighting grows from weak to strong change, if after reaching the condition of backlight adjustment, time delay carries out backlight adjustment in 1.5 seconds again; When surround lighting is by during by force to weak change, if after reaching the condition of backlight adjustment, time delay carries out backlight adjustment in 5 seconds again.Herein, when the change direction of surround lighting is different, the default time delay of employing and backlight intensity pace of change all can be different, when surround lighting changes from weak to strong, comparatively fast, surround lighting is by when dying down by force for default time delay and pace of change, default time delay and pace of change are comparatively slow, to meet the perception custom of human eye.
The embodiment of the present invention provides suitable backlight Adjusted Option for dissimilar terminal device, to eliminate the difference between ambient light intensity and real ambient light intensity that ambient light sensor records, ensure that the backlight illumination of display device can be adjusted to a suitable brightness value, avoid display screen to cross bright or luminance shortage, ensure that display effect.
Corresponding to the backlight adjusting method of the display device described in foregoing embodiments, Fig. 5 shows the structured flowchart of the backlight regulation apparatus of the display device that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present embodiment.
With reference to Fig. 5, this device comprises:
First acquiring unit 51, under each default level of illumination, the difference multiple of the light intensity value that the light intensity value that the ambient light sensor measurement obtaining terminal built-in respectively obtains obtains relative to illuminometer measurement.
Second acquisition unit 52, obtains the actual light intensity value recorded of described ambient light sensor.
Adjustment unit 53, based on the described difference multiple that the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value is corresponding, adjusts the backlight illumination of described display device.
Alternatively, described adjustment unit 53 comprises:
Determine subelement, determine the described default level of illumination residing for the described actual light intensity value recorded.
Computation subunit, is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value by the described actual light intensity value recorded.
Adjustment subelement, is adjusted to described target brightness value by the backlight illumination of described display device.
Alternatively, described computation subunit specifically for:
Judge whether the described actual light intensity value recorded improves at least one grade according to the described default level of illumination determined;
When the described actual light intensity value recorded improves at least one grade, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
Alternatively, described computation subunit specifically for:
Judge whether the described actual light intensity value recorded reduces at least two grades according to the described default level of illumination determined;
When the described actual light intensity value recorded reduces at least two grades, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
Alternatively, described adjustment subelement specifically for:
After have passed through default time delay, the backlight illumination of described display device is adjusted to described target brightness value.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a backlight adjusting method for display device, is characterized in that, comprising:
Under each default level of illumination, the difference multiple of the light intensity value that the light intensity value that the ambient light sensor measurement obtaining terminal built-in respectively obtains obtains relative to illuminometer measurement;
Obtain the actual light intensity value recorded of described ambient light sensor;
Based on the described difference multiple that the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value is corresponding, adjust the backlight illumination of described display device.
2. the method for claim 1, is characterized in that, the described described difference multiple corresponding based on the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value, and the backlight illumination adjusting described display device comprises:
Determine the described default level of illumination residing for the described actual light intensity value recorded;
The described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value;
The backlight illumination of described display device is adjusted to described target brightness value.
3. method as claimed in claim 2, is characterized in that, describedly the described actual light intensity value recorded is multiplied by described difference multiple corresponding to the described default level of illumination determined, obtains target brightness value and comprises:
Judge whether the described actual light intensity value recorded improves at least one grade according to the described default level of illumination determined;
When the described actual light intensity value recorded improves at least one grade, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
4. method as claimed in claim 2, is characterized in that, describedly the described actual light intensity value recorded is multiplied by described difference multiple corresponding to the described default level of illumination determined, obtains target brightness value and comprises:
Judge whether the described actual light intensity value recorded reduces at least two grades according to the described default level of illumination determined;
When the described actual light intensity value recorded reduces at least two grades, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
5. the method as described in claim 3 or 4, is characterized in that, the described backlight illumination by described display device is adjusted to described target brightness value and comprises:
After have passed through default time delay, the backlight illumination of described display device is adjusted to described target brightness value.
6. a backlight regulation apparatus for display device, is characterized in that, comprising:
First acquiring unit, under each default level of illumination, the difference multiple of the light intensity value that the light intensity value that the ambient light sensor measurement obtaining terminal built-in respectively obtains obtains relative to illuminometer measurement;
Second acquisition unit, for obtaining the actual light intensity value recorded of described ambient light sensor;
Adjustment unit, for based on described difference multiple corresponding to the described default level of illumination residing for the described actual light intensity value recorded and this light intensity value, adjusts the backlight illumination of described display device.
7. device as claimed in claim 6, it is characterized in that, described adjustment unit comprises:
Determine subelement, for determining the described default level of illumination residing for the described actual light intensity value recorded;
Computation subunit, for the described actual light intensity value recorded being multiplied by described difference multiple corresponding to the described default level of illumination determined, obtains target brightness value;
Adjustment subelement, for being adjusted to described target brightness value by the backlight illumination of described display device.
8. device as claimed in claim 7, is characterized in that, described computation subunit specifically for:
Judge whether the described actual light intensity value recorded improves at least one grade according to the described default level of illumination determined;
When the described actual light intensity value recorded improves at least one grade, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
9. device as claimed in claim 7, is characterized in that, described computation subunit specifically for:
Judge whether the described actual light intensity value recorded reduces at least two grades according to the described default level of illumination determined;
When the described actual light intensity value recorded reduces at least two grades, the described actual light intensity value recorded is multiplied by the described difference multiple that the described default level of illumination determined is corresponding, obtains target brightness value.
10. as claimed in claim 8 or 9 device, is characterized in that, described adjustment subelement specifically for:
After have passed through default time delay, the backlight illumination of described display device is adjusted to described target brightness value.
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| CN107358909A (en) * | 2017-07-01 | 2017-11-17 | 深圳市灵星雨科技开发有限公司 | A kind of brightness regulation Modification of Curves |
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| CN108775958A (en) * | 2018-05-29 | 2018-11-09 | Oppo（重庆）智能科技有限公司 | Brightness measurement, calibration method, device based on light sensor and electronic equipment |
| CN108775958B (en) * | 2018-05-29 | 2020-12-29 | Oppo（重庆）智能科技有限公司 | Brightness measuring and calibrating method and device based on light sensor and electronic equipment |
| CN111182683A (en) * | 2019-11-26 | 2020-05-19 | 深圳市酷客智能科技有限公司 | Intelligent lamp belt and control method thereof |
| CN111182683B (en) * | 2019-11-26 | 2023-09-19 | 湖南电小酷科技有限公司 | Intelligent lamp strip and control method thereof |
| WO2023000407A1 (en) * | 2021-07-22 | 2023-01-26 | 武汉华星光电技术有限公司 | Ambient light detection method and device, and display device |
| CN117388664A (en) * | 2023-12-11 | 2024-01-12 | 大连创锐光谱科技有限公司 | Semiconductor wafer minority carrier lifetime imaging system and method |
| CN117388664B (en) * | 2023-12-11 | 2024-03-08 | 大连创锐光谱科技有限公司 | Semiconductor wafer minority carrier lifetime imaging system and method |
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| CN104575448B (en) | 2018-01-19 |
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Address after: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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