CN111968604A - Display device, electronic apparatus, and control method of electronic apparatus - Google Patents

Display device, electronic apparatus, and control method of electronic apparatus Download PDF

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Publication number
CN111968604A
CN111968604A CN202010888205.3A CN202010888205A CN111968604A CN 111968604 A CN111968604 A CN 111968604A CN 202010888205 A CN202010888205 A CN 202010888205A CN 111968604 A CN111968604 A CN 111968604A
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Prior art keywords
light
transmittance
display screen
sensor
ambient
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CN202010888205.3A
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CN111968604B (en
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葛励成
张海平
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0433—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using notch filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0801—Means for wavelength selection or discrimination
    • G01J5/0802—Optical filters
    • G01J5/08021—Notch filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
    • G01J5/602—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature using selective, monochromatic or bandpass filtering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
    • G01J2005/607—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature on two separate detectors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of El Displays (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the application provides a display device, electronic equipment and a control method of the electronic equipment. The first filter element has a first transmittance for light within a first emission spectral range of the display screen, and the first filter element has a second transmittance for light within a second emission spectral range of ambient light, the second transmittance being different from the first transmittance. Based on this, the display device of this application embodiment can reduce or avoid the luminous influence that causes of display screen, makes the detection of ambient light intensity and ambient light colour temperature more accurate, can improve the accuracy of ambient light detection.

Description

Display device, electronic apparatus, and control method of electronic apparatus
Technical Field
The present disclosure relates to electronic technologies, and in particular, to a display device, an electronic apparatus, and a control method of the electronic apparatus.
Background
With the development of electronic technology, the screen occupation ratio of electronic equipment such as a smartphone is increasing, and thus the area on the display screen of the electronic equipment for disposing electronic devices such as sensors is decreasing. Therefore, on more and more electronic devices, a light sensor is disposed below a display screen to detect ambient light through the light sensor.
However, in the process of checking the ambient light by the electronic device, the light emitted from the screen is also received by the light sensor, so that the light emitted from the screen affects the detection result of the light sensor.
Disclosure of Invention
The embodiment of the application provides a display device, an electronic device and a control method of the electronic device, which can reduce the influence of screen light leakage on ambient light detection.
In a first aspect, an embodiment of the present application provides a display device, including:
a first light sensor;
a second light sensor;
a display screen positioned on one side of the first light sensor and the second light sensor, the display screen having a first emission spectrum different from a second emission spectrum of ambient light; and
the first light filter element is located between the first light sensor and the display screen, the first light filter element is opposite to the first light sensor, the first light filter element has a first transmittance for light in the first light-emitting spectrum range, the first light filter element has a second transmittance for light in the second light-emitting spectrum range, and the second transmittance is different from the first transmittance.
In a second aspect, an embodiment of the present application further provides an electronic device, including:
a first light sensor;
a second light sensor;
a display screen positioned on one side of the first light sensor and the second light sensor, the display screen having a first emission spectrum different from a second emission spectrum of ambient light;
the first light filter element is positioned between the first light sensor and the display screen, the first light filter element is arranged opposite to the first light sensor, the first light filter element has a first transmittance for light in the first light-emitting spectrum range, the first light filter element has a second transmittance for light in the second light-emitting spectrum range, and the second transmittance is different from the first transmittance; and
the processor is respectively electrically connected with the first light sensor and the second light sensor and used for determining the ambient light intensity or the ambient light color temperature according to the first light intensity value detected by the first light sensor and the second light intensity value detected by the second light sensor.
In a third aspect, an embodiment of the present application further provides a method for controlling an electronic device, where the method is applied to the electronic device, and the method for controlling the electronic device includes:
acquiring a first light intensity value detected by the first light sensor;
acquiring a second light intensity value detected by the second light sensor;
determining the intensity of ambient light according to the first light intensity value and the second light intensity value;
and controlling the electronic equipment according to the ambient light intensity.
According to the display device, the electronic equipment and the control method of the electronic equipment, the second light sensor is arranged right opposite to the display screen, so that the second light sensor can receive and detect the intensity of light rays in a first light-emitting spectrum range emitted by the display screen and the intensity of light rays in a second light-emitting spectrum range of ambient light; meanwhile, the first light filter element is arranged opposite to the first light sensor, the first light filter element has a first transmittance for light in a first light-emitting spectral range of the display screen, and the first light filter element has a second transmittance for light in a second light-emitting spectral range of ambient light, so that, under the action of the first filter sheet, the light intensity of the display screen in a first light-emitting spectral range finally received and detected by the first light sensor is different from the light intensity of the ambient light in a second light-emitting spectral range, according to the difference and combining the light intensity of the display screen and the ambient light detected by the second light sensor, the light intensity and the ambient light color temperature of the external ambient light and the display screen can be respectively calculated, therefore, the influence caused by the light emission of the display screen can be reduced or avoided, the detection of the ambient light intensity and the ambient light color temperature is more accurate, and the accuracy of the ambient light detection can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure.
Fig. 3 is a schematic view of a light emission spectrum of a display screen provided in an embodiment of the present application.
Fig. 4 is a schematic diagram of the light emission spectra of different types of ambient light provided by the embodiments of the present application.
Fig. 5 is a first schematic diagram of transmittance of a first filter element according to an embodiment of the present disclosure.
FIG. 6 is a first light propagation diagram of the display device shown in FIG. 2.
FIG. 7 is a second light propagation diagram of the display device shown in FIG. 2.
Fig. 8 is a second schematic diagram of transmittance of a first filter element according to an embodiment of the present disclosure.
Fig. 9 is a schematic view of a second structure of a display device according to an embodiment of the present application.
Fig. 10 is a schematic structural diagram of a third display device according to an embodiment of the present application.
Fig. 11 is a schematic diagram of a fourth structure of a display device according to an embodiment of the present application.
Fig. 12 is a schematic diagram of a fifth structure of a display device according to an embodiment of the present application.
Fig. 13 is a first flowchart illustrating a control method of an electronic device according to an embodiment of the present application.
Fig. 14 is a second flowchart illustrating a control method of an electronic device according to an embodiment of 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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.
The embodiment of the application provides electronic equipment. The electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an AR (Augmented Reality) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic apparatus 100 may include a housing 10, a display device 20, and a processor 30, among others.
The housing 10 serves to form the outer contour and the overall frame of the electronic device 100. It is understood that the housing 10 may be used to mount various functional modules of the electronic device 100, such as a camera, a circuit board, a battery, etc.
The display device 20 is mounted on the housing 10. The display device 20 is used for displaying information, such as images, texts, and the like. In addition, the display device 20 may further include a light sensor for detecting ambient light, so that the electronic apparatus 100 may automatically control display brightness, display color, and the like when the display device 20 displays information according to the information detected by the light sensor.
The processor 30 is mounted inside the housing 10. The processor 30 is electrically connected to the display device 20 so that the processor 30 can control the display of the display device 20. In addition, the processor 30 may also process the information detected by the light sensor in the display device 20, for example, analyze and calculate the information detected by the light sensor.
Referring to fig. 2, fig. 2 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure. The display device 20 may include a display screen 21, a first filter element 221, a first light sensor 231, and a second light sensor 232.
Among them, the display screen 21 may be used to emit light, and when natural light emitted from the display screen 21 is transmitted to the outside of the display device 20 and enters the eyes of the user, the user may observe information displayed by the display device 20. It is understood that the display screen 21 may include a plurality of Organic Light-Emitting diodes (OLEDs).
Here, the first filter element 221 may be disposed on an inner side of the display screen 21, which is a side where the display screen 21 is not visible when viewed from the outside of the electronic device 100. At this time, the first filter element 221 may be disposed inside the electronic device 100.
The first filter element 221 may be used to select a target wavelength band, such that light of the target wavelength band may pass through the first filter element 221 and light of other wavelength bands may not pass through the first filter element 221. Furthermore, by adjusting the coating material and the coating thickness on the first filter element 221, the first filter element 221 can have different transmittances for light rays in different wavelength bands within the target wavelength band, and thus the transmittance of the first filter element 221 can also change with the change of the wavelength band.
The first light sensor 231 and the second light sensor 232 may be disposed on a side of the first filter element 221 away from the display screen 21. The first light sensor 231 may be spaced apart from the second light sensor 232. The first light sensor 231 and the second light sensor 232 may be photosensors for converting received light signals into corresponding electrical signals.
The first light sensor 231 may be disposed opposite to the first light filter element 221, and the first light filter element 221 may be disposed between the display screen 21 and the first light sensor 231, so that the first light sensor 231 may receive and detect the ambient light within the target wavelength band range and the light emitted from the display screen 21 after being acted on by the first light filter element 221. The second light sensor 232 may be disposed opposite to the display screen 21, so that the second light sensor 232 may receive and detect the ambient light transmitted through the display screen 21 and the light emitted from the display screen 21.
It is understood that, as shown in fig. 2, the area of the first filter element 221 may be larger than the receiving area of the first light sensor 231, so that the first light sensor 231 may sufficiently receive the light transmitted through the first filter element 221.
It will be appreciated that light emitted from the display screen 21 may be emitted either towards the outside of the display device 20 to enter the user's eyes, or towards the side where the first filter element 221 is located and into the inside of the display device 20 to reach the first filter element 221. In addition, ambient light outside the display device 20 may pass through the display device 20 and reach the inside of the display device 20.
It is understood that the display screen 21 may emit light under current stimulation through the organic material in the OLED device, and thus, the light emitted from the display screen 21 may have the first light emission spectrum. For example, referring to fig. 3, fig. 3 is a schematic diagram of an emission spectrum of a display panel provided in an embodiment of the present application, and as shown in fig. 3, a curve S1 may represent a first emission spectrum graph of the display panel 21.
It is understood that the external ambient light of the display device 20 may be sunlight from the sun, or light from an incandescent lamp, a fluorescent lamp, or the like, and thus, the external ambient light may have the second light-emitting spectrum. Since the light emitting principle of solar light, incandescent light, and fluorescent light is different from the light emitting principle of the organic material of the OLED device, the second light emitting spectrum of the external environment light is often different from the first light emitting spectrum of the display screen 21.
Ambient light can be classified into six categories, including CWF (Cool white fluorescence), U30(Ultralume 3000fluorescence), TL84(TL84fluorescence), D65(Daylight-Neutral), A (incorporated) and HZ (HORIZON). Wherein each type of ambient light may have its own second luminescence spectrum. Referring to fig. 4, fig. 4 is a schematic diagram of light emission spectra of different types of ambient light according to an embodiment of the present disclosure.
As shown in FIG. 4, a curve S2 represents a second luminescence spectrum of D65 ambient light; curve S3 shows a second luminescence spectrum of U30 ambient light; curve S4 represents a second luminescence spectrum of TL84 ambient light; curve S5 represents a second luminescence spectrum of CWF ambient light; curve S6 shows a second luminescence spectrum for ambient light a; curve S7 represents a second luminescence spectrum of HZ ambient light.
Comparing fig. 3 and 4, the first light-emitting spectrum of the display screen 21 is different from the second light-emitting spectrum of any kind of ambient light, and based on the difference, the transmittance of the first filter element 221 can be improved, so that the ambient light and the light emitted from the display screen 21 are different after passing through the first filter element 221.
The first filter element 221 may have a first transmittance for light within a first light emission spectrum range, and the first filter element 221 may have a second transmittance for light within a second light emission spectrum range, where the second transmittance is different from the first transmittance.
It is understood that the first transmittance may be an arithmetic average, a geometric average, a harmonic average, a weighted average, etc. of the transmittance corresponding to each wavelength in the first emission spectrum range; similarly, the second transmittance may also be an arithmetic average, a geometric average, a harmonic average, a weighted average, and so on of the transmittance corresponding to each wavelength in the second light emission spectrum range. Accordingly, the transmittance of the first filter element 221 according to the embodiment of the present application may vary with the wavelength.
For example, a CWF light source is used as the ambient light, please refer to fig. 5, and fig. 5 is a first schematic diagram of the transmittance of the first filter element according to the embodiment of the present disclosure. As shown in fig. 5, a curve S1 shows a first emission spectrum when the display panel 21 emits white light, a curve S5 shows a second emission spectrum of CWF ambient light, and a curve S8 shows a first variation graph of the transmittance of the first filter element 221.
As can be seen from the curve S1, the light of the first emission spectrum emitted by the display screen 21 has a wavelength range of about 430 nm to 800 nm, a peak value of a red wavelength band of about 630 nm, a peak value of a green wavelength band of about 530 nm, and a peak value of a blue wavelength band of about 470 nm.
As can be seen from the curve S5, the light of the second emission spectrum emitted by the ambient light CWF has a wavelength range of about 380 nm to 800 nm, a peak of a red wavelength band of about 580 nm, a peak of a green wavelength band of about 550 nm, and a peak of a blue wavelength band of about 440 nm.
As can be seen from the curve S8, the transmittance of the first filter element 221 is about 95% at about 450 nm, about 40% at about 500 nm, about 100% at about 560 nm, and about 40% at about 650 nm, and thus the transmittance-wavelength variation curve of the first filter element 221 may have a "W" shape.
As can be seen from the above-mentioned curves S1, S5 and S8, when the first filter element 221 has a first transmittance for the light emitted from the display panel 21 and a second transmittance for the light emitted from the ambient light, although the transmittances of the light emitted from the display panel 21 and the light of the ambient light after passing through the first filter element 221 are fixed values for the light emitted from the display panel 21 or the light of the ambient light for the light of the same wavelength, since the first emission spectrum is different from the second emission spectrum, the sum of the products of the light intensity and the transmittance of each wavelength band after the light in the first emission spectrum passes through the first filter element 221 is different from the sum of the products of the light intensity and the transmittance of each wavelength band after the light in the second emission spectrum passes through the first filter element 221 under the influence of the first transmittance and the second transmittance, so that the intensity of the light received by the first light sensor 231 facing the first filter element 221, the display screen 21 emits light at an intensity different from the intensity of ambient light.
Illustratively, as shown in FIG. 5, the intensity I of the light emitted from the display screen 21 after passing through the first filter element 221General 1May be an integral of the product of the intensity of light corresponding to each wavelength in the curve S1 and the transmittance of the first filter element 221 corresponding to the wavelength in the curve S8. Similarly, the intensity I of the light emitted from the ambient light CWF after passing through the first filter 221General 2May be an integral of the product of the intensity of light corresponding to each wavelength in the curve S5 and the transmittance of the first filter element 221 corresponding to the wavelength in the curve S8. Since the first emission spectrum of the display screen 21 is different from the second emission spectrum of the ambient light CWF, the first transmittance of the first filter element 221 is also different from the second transmittance, and further, the light intensity of the ambient light after product integration in the light intensity received by the first light sensor 231 is also different from the light intensity emitted by the display screen 21.
It is understood that since the first light sensor 231 is disposed opposite to the first filter element 221 and the second light sensor 232 is disposed opposite to the display screen 21, light received by the second light sensor 232 is different from that received by the first light sensor 231. Referring to fig. 6 and 7 together, fig. 6 is a first light propagation diagram of the display device shown in fig. 2, and fig. 7 is a second light propagation diagram of the display device shown in fig. 2.
As shown in fig. 6, ambient light I1When the light enters the display device 20, the light is reflected and absorbed by the internal structure of the display screen 21 when passing through the display screen 21, and then a certain loss occurs; then, ambient light I1Through the first filter element 221, under the action of the second transmittance of the first filter element 221, a part of light passes through the first filter element 221 and reaches the first light sensor 231; at the same time, ambient light I1Directly incident into the second light sensor 232, the second light sensor 232 can receive all the ambient light I transmitted through the display screen 211。
As shown in fig. 7, the display screen 21 emits lightI2A portion is transmitted toward the outside of the display device 20 and is incident on the eyes of the user; light I emitted from display screen 212The other part of the light is transmitted toward the side where the first filter element 221 is located, and when the light is transmitted to the first filter element 221, under the action of the first transmittance of the first filter element 221, a part of the light passes through the first filter element 221 and reaches the first light sensor 231; at the same time, the light I emitted from the display screen 212Directly incident into the second light sensor 232, the second light sensor 232 can receive the light I emitted from all the display screens 21 after passing through the display screens 212。
At this time, the first light sensor 231 may receive the ambient light having passed through the display screen 21 and having the second transmittance of the first filter element 221, and the light emitted from the display screen 21 having passed through the first transmittance of the first filter element 221; and the second light sensor 232 may receive all of the ambient light transmitted through the display screen 21 and the light emitted from the display screen 21.
It is understood that the first light sensor 231 and the second light sensor 232 can detect the intensity value of the received light when receiving the light. The light intensity value detected by the first light sensor 231 can be recorded as a first light intensity value, and the light intensity value detected by the second light sensor 232 can be recorded as a second light intensity value, wherein the light intensity value indicates the brightness degree of the light.
It is understood that the first light intensity value may be a total intensity value of the ambient light passing through the display screen 21 after passing through the second transmittance of the first filter element 221 and the light emitted from the display screen 21 after passing through the first transmittance of the first filter element 221. The second light intensity value 232 may be the total intensity value of all the ambient light transmitted through the display screen 21 and the light emitted from the display screen 21.
After the first light sensor 231 receives the total value of the light intensity of the ambient light and the light intensity of the light emitted from the display screen 21, which have the difference, the light intensity of the ambient light can be calculated by comparing the ambient light received by the second light sensor 232 with the display screen 21.
Wherein the processor 30 in the electronic device 100 may calculate the light intensity of the ambient light. The processor 30 may be electrically connected to the first light sensor 231 and the second light sensor 232 to process data detected by the first light sensor 231 and the second light sensor 232.
The processor 30 may determine the ambient light intensity from a first light intensity value detected by the first light sensor 231 and a second light intensity value detected by the second light sensor 232. For example, the processor 30 may calculate the ambient light intensity from the weights of the first light intensity value and the second light intensity value under different scenarios. For another example, the ambient light intensity may be determined by combining the light intensity parameter pre-stored in the electronic device 100, and combining the light intensity parameter, the first light intensity value, and the second light intensity value with corresponding calculation formulas.
Illustratively, the processor 30 may calculate the ambient light intensity according to the following formula:
Figure BDA0002656180510000091
wherein the light intensity parameters may include m, n and k. Q is the ambient light intensity; y is a first light intensity value detected by the first light sensor 231; x is a second light intensity value detected by the second light sensor 232; m is the ratio of the light intensity of the display screen 21 detected by the first light sensor 231 and the second light sensor 232 in the environment without ambient light; n is the light intensity ratio of the ambient light detected by the first light sensor 231 and the second light sensor 232 in the environment without the light emitted from the display screen 21; k is a ratio of the light intensity of the ambient light detected by the first light sensor 231 to the light intensity of the ambient light outside the electronic device 100 in an environment where the display screen 21 emits no light.
It is understood that the above formula and the light intensity parameters m, n and k may be stored in the electronic device 100 in advance, for example, on a memory of the electronic device 100. The memory may be electrically connected to the processor 30, and the processor 30 may call a formula and a light intensity parameter in the memory, and calculate the ambient light intensity by combining the first light intensity value and the second light intensity value.
In the electronic device 100 of the embodiment of the application, the processor 30 determines the ambient light intensity according to the above formula and by combining the first light intensity value detected by the first light sensor 231 and the second light intensity value detected by the second light sensor 232, on one hand, the above formula is simple, and the calculation amount of the processor 30 is reduced; on the other hand, the processor 30 only needs to control the two light sensors to perform light detection, and does not need to perform complicated screenshot comparison analysis in the related art to eliminate the operation of screen light leakage noise reduction processing.
It is understood that, since the ambient light includes the aforementioned six categories CWF, U30, TL84, D65, a and HZ, in the above formula, the light intensity parameter n can also be measured for each category of ambient light. That is, six different n values may be stored in advance inside the electronic apparatus 100.
For example, the ratio of the light intensities of the ambient light CWF detected by the first light sensor 231 and the second light sensor 232 can be measured under the ambient light CWF without the display screen 21 emitting light, so as to obtain nCWF(ii) a It will be appreciated that n can also be measured separately based on the same approachU30、nTL84、nD65、nA、nHZ。
Based on this, when the processor 30 calculates the light intensity of the ambient light according to the above formula, the type of the external ambient light outside the display device 20 may be determined in advance, and then the corresponding light intensity parameter n is selected according to the type of the external ambient light, so as to finally calculate the light intensity value of the external ambient light outside the display device 20.
For example, the processor 30 may determine the category of the external ambient light according to the intensity of the infrared light in the ambient light. Since the infrared rays in each of the types of ambient light CWF, U30, TL84, D65, a, and HZ occupy different proportions in their respective spectra, the six types of ambient light can be roughly classified into three major types. Wherein, CWF, U30 and TL84 can be taken as a first class, and the infrared light proportion is the lowest; a and HZ can be the second category, and the infrared light ratio is strongest; d65 may be of the third category, with the infrared percentage in the middle.
The first light sensor 231 and the second light sensor 232 have a built-in channel for receiving and detecting the intensity of the infrared light when detecting the ambient light and the intensity of the light of the display screen 21. Since the ratio of the infrared rays emitted from the display screen 21 is fixed, the intensity of the infrared rays in the ambient light can be determined according to the intensities of the infrared rays received by the first light sensor 231 and the second light sensor 232, and then the type of the ambient light can be finally determined.
For example, when the intensity of infrared light in the ambient light is determined to be very high, the ambient light can be determined to be a or HZ, and n is selected in actual detection because the spectral graphs of the ambient light a and the HZ are relatively similarAOr nHZThe influence on the measurement result is not great; when the infrared ray intensity in the ambient light is judged to be very low, the ambient light can be judged to be CWF, U30 or TL84, and since the spectral graphs of the ambient light CWF, U30 and TL84 are relatively similar, n is selected in the actual detectionCWF、nU30Or nTL84The influence on the measurement result is not large; when the intensity of infrared light in the ambient light is moderate, the ambient light can be judged to be D65, and n can be directly selected in actual detectionD65And (6) performing calculation.
The processor 30 may also determine the color temperature of the ambient light according to a first light intensity value detected by the first light sensor 231 and a second light intensity value detected by the second light sensor 232. It is understood that the light color temperature represents the temperature of the light color. The light rays in the same wave band have different light ray intensity values and can present different color temperatures in sense. For example, when the light intensity of natural light is insufficient, a cold and shady atmosphere is generated, the color temperature is low, and the color is yellow; when the light intensity of natural light is over-sufficient, a warm atmosphere is generated, and the color temperature of the natural light is higher and the color of the natural light is slightly cyan.
For example, the processor 30 may draw a spectrum of the ambient light according to the ambient light intensity value, and determine the ambient light color temperature value according to the spectrum.
For example, the processor 30 may calculate the color temperature value of the ambient light according to a color temperature-light intensity calculation formula. For example, the processor 30 may calculate the color temperature as follows:
CCT＝ax+b
wherein CCT represents a color temperature; a is a color temperature coefficient which is a fixed value; b is a color temperature compensation value and is also a fixed value; x is the intensity value of the ambient light. a and b may be pre-stored in the memory of the electronic device 100, and the processor 30 may calculate the color temperature value of the ambient light according to the formula by combining the first light intensity value and the second light intensity value.
It should be noted that in the description of the present application, it is to be understood that terms such as "first", "second", etc., are used merely for distinguishing between similar objects and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
In the display device 20 of the embodiment of the application, the second light sensor 232 is disposed right opposite to the display screen 21, so that the second light sensor 232 can receive and detect the light intensity in the first light-emitting spectral range emitted by the display screen 21 and the light intensity in the second light-emitting spectral range of the ambient light; meanwhile, the first filter element 221 is disposed between the first light sensor 231 and the display screen 21, the first filter element 221 has a first transmittance for light within the first light-emitting spectrum range of the display screen 21, and the first filter element 221 has a second transmittance for light within the second light-emitting spectrum range of the ambient light, so that, under the action of the first filter sheet 221, the light intensity within the first light-emitting spectrum range of the display screen 21 finally received and detected by the first light sensor 231 is different from the light intensity within the second light-emitting spectrum range of the ambient light, and according to the difference and in combination with the light intensities of the display screen 21 and the ambient light detected by the second light sensor 232, the light intensity of the external ambient light and the color temperature of the ambient light can be calculated, so that the influence caused by the light emission of the display screen 21 can be reduced or avoided, that is, the influence caused by the light emission of the display device 20 itself can be reduced or avoided, the detection of the ambient light intensity and the ambient light color temperature is more accurate, and the accuracy of ambient light detection can be improved.
In order to further improve the accuracy of the detection of the ambient light, the transmittance of the first filter element 221 may be adjusted. For example, the difference between the first transmittance 221 and the second transmittance 232 may be within a preset range. It is understood that the difference between the first transmittance 221 and the second transmittance 232 may be an absolute value of the difference.
It is understood that the predetermined range may be a range in which the difference between the first transmittance and the second transmittance is large. When the difference between the first transmittance and the second transmittance is within the preset range, the difference between the first transmittance and the second transmittance is large, so that after the light emitted by the display screen 21 and the light emitted by the ambient light pass through the first filter element 221, the difference between the light intensity emitted by the display screen 21 and the light intensity emitted by the ambient light after finally passing through the first filter element 221 is large under the action of the large difference in transmittance, and thus the light emitted by the display screen 21 and the ambient light are more easily distinguished.
For example, referring to fig. 5 again, when the transmittance and wavelength variation curve of the first filter element 21 changes in a "W" shape, taking an interval of 450 nm to 500 nm as an example, the transmittance corresponding to the peak value of the light emitted from the display screen 21 is about 95%, and the transmittance corresponding to the trough of the light emitted from the display screen 21 is about 40%; when the light transmittance is between 450 nm and 500 nm, the transmittance of the ambient light is more than 45%. Therefore, in the waveband range, the difference value between the first transmittance of the light emitted by the display screen 21 and the second transmittance of the ambient light is large, so that the ambient light and the light emitted by the display screen 21 can be distinguished more conveniently.
The first transmittance can be set to 1 by adjusting the coating material and the coating thickness of the first filter element 221. As shown in fig. 5, since the range of the first emission spectrum of the light emitted from the display screen 21 is smaller than the range of the second emission spectrum of the ambient light, the first transmittance of the first filter element 221 can be 1 or approximately 1 and the second transmittance is not 1, at this time, the light emitted from the display screen 21 can completely pass through the first filter element 221, and the ambient light can partially pass through the first filter element 221.
For example, please refer to fig. 8, fig. 8 is a second schematic diagram of the transmittance of the first filter element according to the embodiment of the present disclosure. As shown in fig. 8, a curve S9 is a second variation graph of the transmittance of the first filter element 221. As can be seen from the curve S9, the transmittance of the first filter element 221 is approximately 1 between 450 nm and 550 nm, and between 600 nm and 750 nm. Before 450 nm and after 750 nm, the transmittance of the first filter element 221 varies with the wavelength and varies between 0 and 20%. Thus, light emitted from the display screen 21 may be completely transmitted when passing through the first filter element 221, and light of a partial wavelength band of the ambient light may be blocked when passing through the first filter element 221.
Please refer to fig. 9, and fig. 9 is a second structural schematic diagram of a display device according to an embodiment of the present application. The display device 20 may further comprise a second filter element 222.
The second filter element 222 may be disposed between the second light sensor 232 and the display screen 21, and the second filter element 222 may be disposed opposite to the second light sensor 232, so that the second light sensor 232 receives the light emitted by the display screen 21 after passing through the second filter element 222 and the ambient light.
The second filter element 222 may have a third transmittance for light within the first emission spectrum range, and the second filter element 222 may also have a fourth transmittance for light within the second emission spectrum range, and the fourth transmittance is the same as the third transmittance. That is, the transmittance of the second filter element 222 is the same for each wavelength band in the first and second emission spectral ranges.
It is understood that the third transmittance and the fourth transmittance may not be equal to zero, so that at least part of the light emitted from the display screen 21 and at least part of the ambient light can transmit through the second filter element 222, and further, the second light sensor 232 can cooperate with the first light sensor 231 and detect the intensity and the color temperature of the ambient light.
In the display device 20 of the embodiment of the present application, the fourth transmittance and the third transmittance of the second filter element 222 are the same, so that the ratio of the light passing through the display screen 21 of the second filter element 222 to the light of the ambient light is the same, when the calculation is performed according to the above ambient light intensity calculation formula, the light intensity parameters m and n are still constant values, and therefore the ambient light intensity can still be calculated according to the formula.
It is understood that the first filter element 221 and the second filter element 222 may be a whole layer structure, that is, the first filter element 221 and the second filter element 222 may be a whole body, and the thickness and the material of the coating film are adjusted by adjusting different regions of the layer structure, so that the region corresponding to the first light sensor 231 has the first transmittance and the second transmittance, and the region corresponding to the second light sensor 232 has the third transmittance and the fourth transmittance. Therefore, the detection accuracy of the first light sensor 231 and the second light sensor 232 can be ensured; and the display device 20 can have a stable layered structure.
In order to further improve the detection accuracy of the first light sensor 231 and the second light sensor 232, please refer to fig. 10, and fig. 10 is a third structural schematic diagram of the display device according to the embodiment of the present disclosure. The display device 20 of the embodiment of the present application may further include a light diffusing element 24. The light diffusing element 24 may be disposed between the display screen 21 and the first filter element 221. That is, in this case, the display panel 21, the light diffusing element 24, and the first filter element 221 are stacked in this order.
The light diffusion element 24 can be used to refract, reflect and scatter light, so as to achieve the effect of light diffusion and uniform mixing. When the display screen 21 displays information, the OLEDs arranged on the display screen 21 are not always turned on or off at the same time, which causes the total amount of light emitted by the OLEDs in different areas of the display screen 21 to be different.
If the total amount of light emitted by the OLEDs in the display screen 21 corresponding to the first light sensor 231 and the second light sensor 232 is different, the first light intensity value and the second light intensity value detected by the first light sensor 231 and the second light sensor 232 include an error factor that the total amount of light emitted by the OLEDs in the display screen 21 is different, so that an error exists in the ambient light intensity value calculated according to the first light intensity value and the second light intensity value.
The display device 20 of the embodiment of the application, set up a light diffusion element 24 between display screen 21 and first light filtering element 221, this light diffusion element 24 can make light and ambient light that display screen 21 sent mix evenly, thereby reach the light wave band of first light filtering element 221 and second light sensor 232, light quantity is similar the same, can reduce this error factor that the luminous light total amount of OLED is different in the display screen 21 in different regions, improve the accuracy that first light sensor 231 and second light sensor 232 detected.
In order to further improve the detection accuracy of the first light sensor 231 and the second light sensor 232, please refer to fig. 11, and fig. 11 is a fourth structural schematic diagram of the display device according to the embodiment of the present disclosure. The embodiment of the present application can also reduce the error factor of different total amounts of light emitted by the OLEDs in the display screen 21 in different areas by adjusting the relative position relationship among the first filter element 221, the first light sensor 231, the second light sensor 232, and the display screen 21.
As shown in fig. 11, the first light sensor 231 and the second light sensor 232 may be as close as possible. Because the distance between the first light sensor 231 and the second light sensor 232 is smaller, the corresponding areas on the display screen 21 are closer, and the total amount of the light emitted by the OLEDs in the areas of the display screen 21 that are closer to each other is also closer, so that the total amount of the light reaching the upper parts of the first light sensor 231 and the second light sensor 232 is closer, and the error factor that the total amount of the light emitted by the OLEDs in the display screens 21 in different areas is different can be reduced.
It is understood that, in theory, the distance between the first light sensor 231 and the second light sensor 232 may be zero. In actual production, the gap distance between the first light sensor 231 and the second light sensor 232 may be about 0.3 mm for assembly.
As shown in fig. 11, the distances between the display screen 21 and the first filter element 221, the first light sensor 231, and the second light sensor 232 may also be increased to reduce the error factor of different total amounts of light emitted by the OLEDs in different regions of the display screen 21.
Because the display screen 21 can be self-luminous, the emitted light itself has a certain scattering angle, when the distance between the display screen 21 and the first filter element 221, the first light sensor 231 and the second light sensor 232 is enlarged, the light emitted by the display screen 21 can be uniformly mixed when reaching the first filter element 221 and the second light sensor 232, so that the total amount of the light reaching the upper parts of the first light sensor 231 and the second light sensor 232 is approximate, and the detection accuracy of the first light sensor 231 and the second light sensor 232 can be improved.
In addition to the above structure, please refer to fig. 12, fig. 12 is a schematic diagram of a fifth structure of the display device according to the embodiment of the present disclosure, and the display device 20 according to the embodiment of the present disclosure may further include a cover plate 25, a touch circuit 26, a polarization element 27, and a wave plate element 28.
The cover plate 25, the touch circuit 26, the polarization element 27, the wave plate element 28, and the display screen 21 may be sequentially stacked, and the cover plate 25 may be disposed on an outermost side of the display device 20 facing a user. The cover plate 25 may protect the display device 20 and prevent the display device 20 from being scratched.
It will be appreciated that the cover plate 25 may be a clear glass cover plate 25 such that the cover plate 25 does not interfere with the user's view of the content displayed by the display device 20.
The touch circuit 26 may be disposed between the cover plate 25 and the polarizer 27. The touch circuit 26 may be disposed on a side of the display device 20 facing the user. The touch circuit 26 may be electrically connected to the display screen 21, and the touch circuit 26 may detect a touch operation of the user on the display screen, so as to implement the touch operation of the user on the electronic device 100.
The polarizing element 27, the wave plate element 28, and the display panel 21 are stacked in this order. The polarizing element 27 may be arranged on a side of the display screen 21 facing away from the first filter element 221, the side of the polarizing element 27 being the side facing the user when the display device 20 displays information. That is, the side where the polarizing element 27 is located is the light outgoing side when the display device 20 displays information. It will be appreciated that the side on which the polarizing element 27 is located is also the incident side of ambient light. That is, the ambient light is incident inside the display device 20 from the side where the polarizing element 27 is located.
When natural light emitted from the display screen 21 is transmitted to the polarizing element 27, the polarizing element 27 polarizes the natural light so that the natural light becomes linearly polarized light. Thus, the user can normally observe the information displayed by the display device 20. When the ambient light is incident into the display device 20 through the polarizer 27, the polarizer 27 may also polarize the ambient light to make the ambient light become linearly polarized light, so that the ambient light incident into the display device 20 is linearly polarized light.
It is understood that the polarizing element 27 has a polarizing axis. The direction of the polarizing axis of the polarizing element 27 is the same as the direction of the light that can be transmitted by the polarizing element 27. That is, in natural light, a portion parallel to the polarizing axis of the polarizer 27 may transmit the polarizer 27, and a portion perpendicular to the polarizing axis of the polarizer 27 may not transmit the polarizer 27.
Wherein the wave plate element 28 is arranged between the polarizing element 27 and the display screen 21. The wave plate element 28 may retard the phase of the light, and the wave plate element 28 in cooperation with the polarization element 27 may change the propagation path of the light.
Illustratively, the wave plate element 28 may be a quarter wave plate element, which may cause the light ray emitted from the normally incident light (normal light) to emit a phase difference 1/4 λ wavelength between the ordinary light (O light) and the extraordinary light (e light) when the light passes through the quarter wave plate element. In the light path, the quarter-wave plate element can change linearly polarized light into circularly polarized light or elliptically polarized light; or vice versa.
When the ambient light enters the inside of the display device 20, the incident direction of a part of the ambient light is different from the direction of the polarization axis of the polarizer 27 and is blocked outside the polarizer 27, the incident direction of another part of the ambient light is the same as the direction of the polarization axis of the polarizer 27 and is transmitted through the polarizer and becomes linearly polarized light, and then is transmitted through the quarter-wave plate element and becomes circularly polarized light, the rotation direction of the circularly polarized light is changed by 90 degrees after being reflected by the metal electrodes (particularly the metal cathode) in the display screen 21, and the reflected light cannot pass through the polarizer 27 again, so that the reflection problem of the ambient light can be solved by the mutual cooperation of the polarizer 27 and the quarter-wave plate element.
Illustratively, the wave plate element 28 may also be a half-wave plate element, and a part of light in the ambient light that is not blocked by the polarization element 27 is changed into linearly polarized light after passing through the polarization element 27, and then is still linearly polarized light after passing through the half-wave plate element, but the polarization direction of the light is perpendicular to the original polarization direction, so that the propagation path of the light can be changed.
It is to be understood that the structure and type of the wave plate element 28 are not limited to a quarter wave plate element and a half wave plate element, and may be a combination of the two. The structure of the wave plate element 28 is not particularly limited in the embodiments of the present application.
In the manufacturing process of the display device 20, the light diffusion element 24 may be attached to the inner side surface of the display screen 21 to form the display screen 21 and the light diffusion element 24 into a whole; then, the display screen 21, the wave plate element 28, the polarization element 27, the touch circuit 26 and the cover plate 25 are sequentially stacked; then, the first filter element 221 may be directly attached to the sensing surface of the first light sensor 231, so that the first filter element 221 and the first light sensor 231 may be disposed opposite to each other; finally, the distance between the whole formed by the first light sensor 231 and the first filter element 221 and the display screen 21, the distance between the second light sensor 232 and the display screen 21, and the distance between the whole formed by the first light sensor 231 and the first filter element 221 and the second light sensor 232 are adjusted to realize the assembly of the display device 20.
Based on the structure of the display device 20, the embodiment of the present application further provides a method for controlling an electronic apparatus, and the method for controlling an electronic apparatus can be applied to the electronic apparatus 100 in any of the embodiments.
Referring to fig. 13, fig. 13 is a first flowchart illustrating a control method of an electronic device according to an embodiment of the present disclosure. The control method of the electronic equipment comprises the following steps:
101, acquiring a first light intensity value detected by a first light sensor;
102, acquiring a second light intensity value detected by a second light sensor;
103, determining the ambient light intensity according to the first light intensity value and the second light intensity value;
and 104, controlling the electronic equipment according to the ambient light intensity.
The electronic device 100 may obtain a first light intensity value detected by the first light sensor 231 and obtain a second light intensity value detected by the second light sensor 232, and then determine the ambient light intensity according to the first light intensity value and the second light intensity value.
For example, the step of determining the ambient light intensity from the first light intensity value and the second light intensity value may comprise: the ambient light intensity is determined according to the following formula:
Figure BDA0002656180510000181
the memory of the electronic device 100 may store the light intensity parameters, m, n, and k in advance. In the above formula: q is the ambient light intensity; y is a first light intensity value; x is a second light intensity value; m is the ratio of the light intensity of the display screen 21 detected by the first light sensor 231 and the second light sensor 232 in the environment without ambient light; n is the light intensity ratio of the ambient light detected by the first light sensor 231 and the second light sensor 232 in the environment without the light emitted from the display screen 21; k is a ratio of the light intensity of the ambient light detected by the first light sensor 231 to the light intensity of the ambient light outside the electronic device 100 in an environment where the display screen 21 emits no light. And according to the formula, combining the first light intensity value, the second light intensity value and the light intensity parameters m, n and k to determine the ambient light intensity.
Based on the above formula, the control method of the electronic device may further include:
and acquiring a screen light leakage calibration coefficient m. Turning off the ambient light (e.g., placing the electronic device 100 in a dark room) to enable the electronic device 100 to be in an environment without ambient light, controlling the display screen 21 to emit light and display the light of the target wavelength band, and obtaining the light intensity value P of the display screen 21 detected by the first light sensor 2311And a light intensity value P of the display screen 21 detected by the second light sensor 2322 A 1 is to P1And P2Ratio P of1/P2The light intensity parameter m in the above formula is determined. It is understood that the light of the target wavelength band may be white light. For example, the RGB tone map of the display interface of the display screen 21 may be adjusted to (255, 255, 255).
And acquiring an ambient light calibration coefficient n. Turning off the display device 20 to make the display screen 21 not emit light, and the electronic apparatus 100 is in an environment without the display screen 21 emitting light, so that the ambient light is incident into the display device 20 and received by the first light sensor 231 and the second light sensor 232 to obtain the light intensity value H of the ambient light detected by the first light sensor 2311And a light intensity value H of the ambient light detected by the second light sensor 2322Is prepared from H1And H2Ratio H of1/H2The light intensity parameter n in the above formula is determined.
And acquiring an ambient light intensity calibration coefficient k. Reading the intensity value Q of the real environment light outside the electronic device 100 in the environment without the display screen 21 emitting light in the previous step by using the illuminometer0Is mixing Q with0And H1The ratio of (a) is determined as the light intensity parameter k in the above formula.
Based on this, the values of the light intensity parameters m, n, and k may be determined according to the control method of the electronic device, the electronic device 100 may store the values of the light intensity parameters m, n, and k in a memory of the electronic device 100 in advance, and when ambient light detection is performed, the ambient light intensity may be determined by determining the ambient light intensity according to the first light intensity value, the second light intensity value, and the light intensity parameter.
It is understood that six different n values may be stored inside the electronic device 100 in advance to correspond to six types of ambient light, CWF, U30, TL84, D65, a, and HZ. It is understood that the measurement of six different n values can be found in the foregoing description, and will not be described herein.
It can be understood that, when the processor 30 calculates the light intensity of the ambient light according to the above formula, the type of the external ambient light outside the display device 20 may be determined in advance, and then the corresponding light intensity parameter n is selected according to the type of the external ambient light, so as to finally calculate the light intensity value of the external ambient light outside the display device 20. It is understood that the method for the processor 30 to determine the type of the ambient light in advance can also be referred to the foregoing description, and will not be described herein again.
After determining the intensity of the ambient light, the electronic device 100 may be controlled according to the intensity of the ambient light, which may include controlling display brightness, display color, and the like of the electronic device 100, and may further include controlling a display mode of the electronic device 100, for example, controlling the electronic device 100 to switch between a daytime display mode and a nighttime display mode according to the intensity of the ambient light.
Illustratively, controlling the electronic device according to the ambient light intensity includes: the electronic device 100 may be controlled to adjust its brightness according to the ambient light intensity.
For example, when the ambient light intensity is greater than the preset ambient intensity threshold, at this time, the ambient light intensity is too strong, when the user watches the screen of the electronic device 100 in this environment, the user may be injured by the eyes of the user, the user may feel uncomfortable watching the screen, and it is necessary to turn down the display brightness appropriately. Therefore, the electronic equipment can be controlled to adjust the brightness of the display screen of the electronic equipment according to the ambient light intensity.
Based on the above description, please refer to fig. 14, and fig. 14 is a second flowchart of a control method of an electronic device according to an embodiment of the present application. The control method of the electronic device in the embodiment of the application may further include:
201, acquiring a first light intensity value detected by a first light sensor;
202, obtaining a second light intensity value detected by a second light sensor;
203, determining the color temperature of the ambient light according to the first light intensity value and the second light intensity value;
204. and controlling the electronic equipment according to the color temperature of the ambient light.
It is understood that when the first light intensity value and the second light intensity value are detected, the color temperature of the ambient light can be determined according to the first light intensity value and the second light intensity value.
For example, a spectrogram of the ambient light may be drawn according to the ambient light intensity value, and the ambient light color temperature value may be determined according to the spectrogram.
Illustratively, the ambient light color temperature may also be calculated as follows:
CCT＝ax+b
wherein CCT represents a color temperature; a is a color temperature coefficient which is a fixed value; b is a color temperature compensation value and is also a fixed value; x is the intensity value of the ambient light. a and b may be pre-stored in the memory of the electronic device 100, and the processor 30 may calculate the color temperature value of the ambient light according to the formula by combining the first light intensity value and the second light intensity value.
It is to be understood that the method for determining the color temperature of the ambient light according to the first light intensity value and the second light intensity value in the embodiments of the present application is not limited to the above examples, and other ways for determining the color temperature of the ambient light according to the above parameters are within the scope of the present application.
After the ambient light color temperature is determined, the electronic device 100 may be controlled according to the ambient light color temperature, which may include, for example, controlling a shooting background and a color of a display screen of a camera of the electronic device 100; or, the electronic device can be controlled to adjust the shooting background according to the color and temperature of the ambient light.
It should be noted that, in the control method of the electronic device according to the embodiment of the present application, the steps may be combined without conflict, and the combined scheme is also within the scope of the control method of the electronic device according to the embodiment of the present application.
The display device, the electronic apparatus, and the control method of the electronic apparatus provided in the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (13)

1. A display device, comprising:
a first light sensor;
a second light sensor;
a display screen positioned on one side of the first light sensor and the second light sensor, the display screen having a first emission spectrum different from a second emission spectrum of ambient light; and
the first light filter element is located between the first light sensor and the display screen, the first light filter element is opposite to the first light sensor, the first light filter element has a first transmittance for light in the first light-emitting spectrum range, the first light filter element has a second transmittance for light in the second light-emitting spectrum range, and the second transmittance is different from the first transmittance.
2. The display device according to claim 1, wherein a difference between the first transmittance and the second transmittance is within a preset range.
3. The display device according to claim 1, wherein the first transmittance is 1.
4. The display device according to claim 1, further comprising:
the second light filtering element is located between the second light sensor and the display screen, the second light filtering element is opposite to the second light sensor, the second light filtering element has a third transmittance for light in the first light-emitting spectrum range, the second light filtering element has a fourth transmittance for light in the second light-emitting spectrum range, and the fourth transmittance is the same as the third transmittance.
5. The display device according to any one of claims 1 to 4, further comprising:
the light diffusion element is positioned between the display screen and the first light filtering element, and the light diffusion element is arranged opposite to the first light sensor and the second light sensor.
6. An electronic device, comprising:
a first light sensor;
a second light sensor;
a display screen positioned on one side of the first light sensor and the second light sensor, the display screen having a first emission spectrum different from a second emission spectrum of ambient light;
the first light filter element is positioned between the first light sensor and the display screen, the first light filter element is arranged opposite to the first light sensor, the first light filter element has a first transmittance for light in the first light-emitting spectrum range, the first light filter element has a second transmittance for light in the second light-emitting spectrum range, and the second transmittance is different from the first transmittance; and
the processor is respectively electrically connected with the first light sensor and the second light sensor and used for determining the ambient light intensity or the ambient light color temperature according to the first light intensity value detected by the first light sensor and the second light intensity value detected by the second light sensor.
7. The electronic device of claim 6, wherein a difference between the first transmittance and the second transmittance is within a preset range.
8. The electronic device according to claim 6, wherein the first transmittance is 1.
9. The electronic device of claim 6, further comprising:
the second light filtering element is located between the second light sensor and the display screen, the second light filtering element is opposite to the second light sensor, the second light filtering element has a third transmittance for light in the first light-emitting spectrum range, the second light filtering element has a fourth transmittance for light in the second light-emitting spectrum range, and the fourth transmittance is the same as the third transmittance.
10. The electronic device of claim 6, further comprising:
the light diffusion element is positioned between the display screen and the first light filtering element, and the light diffusion element is arranged opposite to the first light sensor and the second light sensor.
11. The electronic device of any of claims 6-10, wherein the processor is further configured to determine the ambient light intensity according to the following equation:
Figure FDA0002656180500000021
wherein Q is the ambient light intensity; y is the first light intensity value; x is the second light intensity value; m is the light intensity ratio of the display screen detected by the first light sensor and the second light sensor in the environment without ambient light; n is the light intensity ratio of the ambient light detected by the first light sensor and the second light sensor in the environment without the light emitted by the display screen; and k is the ratio of the light intensity of the ambient light detected by the first light sensor to the light intensity of the ambient light outside the electronic device in an environment without light emitted by the display screen.
12. A control method of an electronic device, applied to the electronic device according to any one of claims 6 to 11, the control method of the electronic device comprising:
acquiring a first light intensity value detected by the first light sensor;
acquiring a second light intensity value detected by the second light sensor;
determining the intensity of ambient light according to the first light intensity value and the second light intensity value;
and controlling the electronic equipment according to the ambient light intensity.
13. The method of claim 12, wherein determining the ambient light intensity from the first light intensity value and the second light intensity value comprises:
calculating the ambient light intensity according to the formula:
Figure FDA0002656180500000031
wherein Q is the ambient light intensity; y is the first light intensity value; x is the second light intensity value; m is the light intensity ratio of the display screen detected by the first light sensor and the second light sensor in the environment without ambient light; n is the light intensity ratio of the ambient light detected by the first light sensor and the second light sensor in the environment without the light emitted by the display screen; and k is the ratio of the light intensity of the ambient light detected by the first light sensor to the light intensity of the ambient light outside the electronic device in an environment without light emitted by the display screen.
CN202010888205.3A 2020-08-28 2020-08-28 Display device, electronic apparatus, and control method of electronic apparatus Active CN111968604B (en)

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