CN111968600A

CN111968600A - Display device, electronic apparatus, and control method of electronic apparatus

Info

Publication number: CN111968600A
Application number: CN202010887433.9A
Authority: CN
Inventors: 葛励成; 张海平
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2020-11-20
Anticipated expiration: 2040-08-28
Also published as: CN111968600B

Abstract

The embodiment of the application provides a display device, electronic equipment and control method of electronic equipment, display device includes the display screen, adjust luminance the subassembly, first light sensor and second light sensor, adjust luminance the subassembly and be used for filtering the ambient light that sees through the display screen and the light that the display screen sent, thereby can make first light sensor receive the visible light that the display screen sent, see through visible light and the infrared ray in the ambient light of display screen, the visible light that the second light sensor can receive the display screen and send, and see through the infrared ray in the ambient light of display screen. Based on this, the display device of this application embodiment can reduce the influence of display screen light leak and infrared light to visible light in the ambient light for the detection of visible light is more accurate in the ambient light, thereby can make the measurement of infrared light ratio more accurate in the ambient light.

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.

In the process of checking the ambient light by the electronic device, the light emitted by the display screen and the infrared light in the ambient light both affect the detection result of the light sensor. In the related art, the display screen light leakage detected by the light sensor, the infrared light in the ambient light, and the visible light in the ambient light are all considered as the visible light of the external environment of the electronic device, which undoubtedly makes the light sensor inaccurate in detecting the visible light of the external environment, and further, the infrared light ratio obtained according to the inaccurate visible light is also inaccurate.

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 screen light leakage and influence of infrared light in an environment on visible light detection in the environment, and improve accuracy of infrared light ratio detection in the environment.

In a first aspect, an embodiment of the present application provides a display device, including:

a display screen;

the dimming component is arranged on one side of the display screen;

the first light sensor is arranged on one side, away from the display screen, of the dimming assembly; and

the second light sensor is arranged on one side, away from the display screen, of the dimming assembly; wherein the content of the first and second substances,

the light adjusting assembly is used for filtering the ambient light of the display screen and the light emitted by the display screen, so that the first light sensor receives the visible light emitted by the display screen and the visible light and the infrared light in the ambient light of the display screen, and the second light sensor receives the visible light emitted by the display screen and the infrared light in the ambient light of the display screen.

In a second aspect, an embodiment of the present application further provides an electronic device, including:

a display screen;

the dimming component is arranged on one side of the display screen;

the first light sensor is arranged on one side, away from the display screen, of the dimming assembly;

the second light sensor is arranged on one side, away from the display screen, of the dimming assembly; and

a processor electrically connected to the first light sensor and the second light sensor; wherein the content of the first and second substances,

the light adjusting assembly is used for filtering the ambient light penetrating through the display screen and the light emitted by the display screen, so that the first light sensor receives the visible light emitted by the display screen and the visible light and the infrared light in the ambient light penetrating through the display screen, and the second light sensor receives the visible light emitted by the display screen and the infrared light in the ambient light penetrating through the display screen;

the processor is used for determining the ratio of infrared light in ambient light according to the light received by the first light sensor and 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 the intensity of first light rays through a first light ray sensor, wherein the first light rays comprise visible light rays emitted by the display screen and visible light rays and infrared light rays in ambient light penetrating through the display screen;

acquiring the intensity of second light rays through a second light ray sensor, wherein the second light rays comprise light rays emitted by a display screen and ambient light penetrating through the display screen;

calculating the ratio of infrared light in ambient light according to the intensity of the first light and the intensity of the second light;

and controlling the electronic equipment according to the infrared light ratio in the ambient light.

The embodiment of the application provides a display device, electronic equipment and electronic equipment's control method, display device includes the display screen, adjust luminance the subassembly, first light sensor and second light sensor, adjust luminance the subassembly and be used for filtering the ambient light that sees through the display screen and the light that the display screen sent, thereby can make first light sensor can receive the visible light that the display screen sent, see through the visible light in the ambient light of display screen, and see through the infrared ray in the ambient light of display screen, the visible light that the second light sensor can receive the display screen and send, and see through the infrared ray in the ambient light of display screen. Based on the above, the intensity of the infrared light in the ambient light and the intensity of the visible light in the ambient light can be calculated through simple calculation according to the intensities of different light detected by the first light sensor and the second light sensor, and the ratio of the infrared light in the ambient light can be obtained. Furthermore, the display device and the electronic equipment provided by the embodiment of the application can reduce the influence of display screen light leakage and infrared light on visible light in ambient light, so that the detection of the visible light in the ambient light is more accurate, and the measurement of the infrared light ratio in the ambient light is more accurate.

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 second schematic diagram of a display device according to an embodiment of the present disclosure.

FIG. 4 is a first light propagation diagram of the display device shown in FIG. 3.

FIG. 5 is a second light propagation diagram of the display device shown in FIG. 3.

Fig. 6 is a third schematic view of a display device according to an embodiment of the present application.

FIG. 7 is a first light propagation diagram of the display device shown in FIG. 6.

FIG. 8 is a second light propagation diagram of the display device shown in FIG. 6.

Fig. 9 is a fourth schematic diagram of a display device according to an embodiment of the present application.

Fig. 10 is a schematic diagram of transmittance of a light sensor according to an embodiment of the present application.

Fig. 11 is a schematic diagram of light emission spectra of different classes of ambient light provided by an embodiment of the present application.

Fig. 12 is a first flowchart illustrating a control method of an electronic device according to an embodiment of the present application.

Fig. 13 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 device 10 may include a housing 100, a display device 200, and a processor 300, among others.

The housing 100 is used to form the outer contour and overall frame of the electronic device 10. It will be appreciated that the housing 100 may be used to mount various functional modules of the electronic device 10, such as a camera, a circuit board, a battery, etc.

The display device 200 is mounted on the housing 100. The display device 200 is used for displaying information, such as images, texts, and the like. In addition, the display device 200 may further include a light sensor for detecting ambient light, so that the electronic apparatus 10 may automatically control display brightness, display color, and the like when the display device 200 displays information according to the information detected by the light sensor.

The processor 300 is installed inside the housing 100. The processor 300 is electrically connected to the display device 200 so that the processor 300 can control the display of the display device 200. In addition, the processor 300 may also process the information detected by the light sensor in the display device 200, for example, analyze and calculate the information detected by the light sensor.

Referring to fig. 2 in conjunction with fig. 1, fig. 2 is a first schematic diagram of a display device according to an embodiment of the present disclosure. The display device 200 may include a display screen 210, a dimming component 220, a first light sensor 230, and a second light sensor 240.

The display screen 210 may be used to emit light and display information such as images and characters, so as to implement the display function of the display device 200. When natural light emitted from the display screen 210 is transmitted to the outside of the display apparatus 200 and enters the eyes of the user, the user can observe information displayed by the display apparatus 200. It is understood that the display screen 210 may include a plurality of Organic Light-Emitting diodes (OLEDs).

The dimming component 220 may be disposed on a side of the display screen 210, for example, the dimming component 220 is disposed on an inner side of the display screen 210 facing the electronic device 10, where the inner side is a side where the display screen 210 is not visible when viewed from the outside of the electronic device 10. At this time, the dimming component 220 may be disposed inside the electronic device 10.

The dimming component 220 is used for filtering the ambient light passing through the display screen 210 and the light emitted from the display screen 210, so as to change the condition that the first light sensor 230 and the second light sensor 240 receive the ambient light. The light modulating component 220 may include elements or sets of elements that change the polarization direction of light, such as polarizing elements, quarter wave plates, filters, color filters, and the like.

It is understood that, as shown in FIG. 2, the ambient light may be natural light and may include visible light I₁And infrared light I_IRAmbient light I outside the display device 200₁And I_IRThe ambient light can reach the inside of the display device 200 through the display screen 210, and the polarization direction of the ambient light entering the inside of the display device 200 can be changed by the dimming component 220. For example, the dimming component 220 can change the visible light I in the ambient light transmitted through the display screen 210₁Such that the visible light I in the ambient light transmitted through the display screen 210₁Can penetrate from a partial region of the dimming component 220 into the first light sensor 230, and visible light I₁Is not transparent from another region of the dimming component 220 and cannot enter the second light sensor 240.

It is understood that the light emitted from the display screen 210 may be natural light when displaying information, and the natural light I emitted from the display screen 210₂Either toward the outside of the display device 200 and into the eyes of the user or toward the side of the dimming component 220 and into the inside of the display device 200 and to the dimming component 220.

The first light sensor 230 and the second light sensor 240 may be disposed on a side of the dimming component 220 facing away from the display screen 210. The first light sensor 230 may be spaced apart from the second light sensor 240. The first and second

light sensors

230 and 240 may be photosensors and are configured to convert received light signals into corresponding electrical signals.

As shown in fig. 2, the first light sensor 230 may be disposed opposite to a partial region of the dimming component 220, and under the action of the dimming component 220, the first light sensor 230 may receive the visible light I emitted from the display screen 210₂Visible rays I of the ambient light transmitted through the display screen 210₁And a transparent display screen 210In the ambient light I_IR。

As shown in fig. 2, the second light sensor 240 may also be disposed opposite to a partial region of the light adjusting assembly 220, and under the action of the light adjusting assembly 220, the second light sensor 240 may receive the visible light I emitted from the display screen 210₂And infrared light I in the ambient light passing through the display screen 210_IR. Under the action of the light adjusting component 220, the second light sensor 240 may not receive the visible light I in the ambient light transmitted through the display screen 210₁。

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 200 and the electronic apparatus 10 provided in the embodiment of the present application, through setting up the light adjustment assembly 220, the light adjustment assembly 220 is used for filtering the ambient light passing through the display screen 210 and the light emitted by the display screen 210, thereby enabling the first light sensor 230 to receive the visible light emitted by the display screen 210, the visible light passing through the ambient light of the display screen 210, and the infrared light passing through the ambient light of the display screen 210, and the second light sensor 240 to receive the visible light emitted by the display screen 210, and the infrared light passing through the ambient light of the display screen 210. Based on this, the intensity of the infrared light in the ambient light and the intensity of the visible light in the ambient light can be calculated through simple calculation according to the intensities of the light detected by the first light sensor 230 and the second light sensor 240, and the ratio of the infrared light in the ambient light can be obtained. Furthermore, the display device 200 and the electronic apparatus 10 according to the embodiment of the present application are simple to calculate, and can reduce the amount of calculation on the software side; on the other hand, the influence of the light leakage of the display screen 210 and the infrared light on the visible light in the ambient light can be reduced, so that the detection of the visible light in the ambient light is more accurate, and the measurement of the infrared light ratio in the ambient light is more accurate.

Referring to fig. 3 in conjunction with fig. 2, fig. 3 is a second schematic view of a display device according to an embodiment of the present disclosure. The display screen 210 may include a first polarizing element 211 and a light emitting layer 212, the dimming component 220 may include a second polarizing element 221 and a third polarizing element 222, the second polarizing element 221 and the third polarizing element 222 may be disposed at the same layer, and the light emitting layer 212 may be disposed between the first polarizing element 211 and the second polarizing element 221 and the third polarizing element 222.

The light-emitting layer 212 may be used to emit light to generate light when the display screen 210 displays information. The light generated by the light emitting layer 212 can be transmitted toward one side of the dimming component 220, such as the second polarizing element 221 and the third polarizing element 222, or can be transmitted toward one side away from the dimming component 220, such as the first polarizing element 211.

The first polarization element 211 may be disposed on a side of the display screen 210 facing a user, that is, on an outer side of the light-emitting layer 212. The area of the first polarizer 211 may be much larger than the areas of the first and second

light sensors

230 and 240, so that the first polarizer 211 may be disposed opposite to the first and second

light sensors

230 and 240.

The second polarizer 221 may be disposed between the light-emitting layer 212 and the first light sensor 230, and the second polarizer 221 may be disposed opposite to the first light sensor 230. Similarly, the third polarizer 222 may be disposed between the light-emitting layer 212 and the second light sensor 240, and the third polarizer 222 may be disposed opposite to the second light sensor 240.

It is understood that the first, second and third

polarizing elements

211, 221 and 222 may include polarizers, and the first, second and third

polarizing elements

211, 221 and 222 may be used to polarize light.

It is understood that the first polarization element 211 may include a first polarization axis, and the first polarization element 211 may allow light having a polarization direction parallel to the first polarization axis to pass therethrough and prevent light having a polarization direction perpendicular to the first polarization axis from passing therethrough. Similarly, the second polarization element 221 may include a second polarization axis, and the second polarization element 221 may allow light having a polarization direction parallel to the second polarization axis to pass therethrough and prevent light having a polarization direction perpendicular to the second polarization axis from passing therethrough. The third polarizing element 222 may include a third polarizing axis, and the third polarizing element 222 may allow light having a polarization direction parallel to the third polarizing axis to pass therethrough and prevent light having a polarization direction perpendicular to the third polarizing axis from passing therethrough.

It is understood that, due to the inherent characteristics of the polarizing elements, it is difficult for the polarizing elements to polarize light in the infrared band, and therefore, the first polarizing element 211, the second polarizing element 221, and the third polarizing element 222 do not substantially change the polarization direction of infrared light in ambient light, which can transmit the first polarizing element 211, the second polarizing element 221, and the third polarizing element 222.

Here, the second polarization axis of the second polarization element 221 may be parallel to the first polarization axis of the first polarization element 211, and the third polarization axis of the third polarization element 222 may be perpendicular to the first polarization axis of the first polarization element 211. At this time, please refer to fig. 4 and fig. 5, wherein fig. 4 is a first light propagation diagram of the display device shown in fig. 3, and fig. 5 is a second light propagation diagram of the display device shown in fig. 3.

As shown in FIG. 4, ambient light in the nature of natural light may include visible rays I₁And infrared ray I_IR. When the visible ray I₁When the light is transmitted to the inside of the electronic device 10 through the display screen 210, the visible light I₁Linearly polarized light I is formed when the first polarizer 211 is transmitted₁₁Linearly polarized light I₁₁May be parallel to the first polarizing axis of the first polarizing element 211. Linearly polarized light I₁₁May continue to travel toward the interior of the electronic device 10 and may pass through the luminescent layer 212 into the second polarizing element 221 and the third polarizing element 222.

Since the second polarization axis of the second polarization element 221 is parallel to the first polarization axis of the first polarization element 211, the linearly polarized light I₁₁May be parallel to the second polarization axis of the second polarization element 221, linearly polarized light I₁₁Can enter the first light sensor 230 through the second polarizer 221, so that the first light sensor 230 can receive visible light in the ambient lightA wire.

Since the third polarization axis of the third polarization element 222 is perpendicular to the first polarization axis of the first polarization element 211, the linearly polarized light I₁₁May be perpendicular to the second polarization axis of the second polarization element 221, linearly polarized light I₁₁The light cannot enter the first light sensor 230 through the second polarizing element 221, so that the second light sensor 240 does not receive visible light in ambient light.

When the infrared ray I is as shown in FIG. 4_IRWhen the infrared light is transmitted to the inside of the electronic device 10 through the display screen 210, the first polarization element 211, the second polarization element 221, and the third polarization element 222 do not substantially affect the polarization direction of the infrared light, so the infrared light I does not substantially affect the polarization direction of the infrared light_IRCan directly pass through the first polarizing element 211 and enter the luminescent layer 212, the infrared ray I_IRThe light may pass through the second polarizing element 221 and enter the first light sensor 230, and may pass through the third polarizing element 222 and enter the second light sensor 240.

Based on the light emitting characteristics of the display screen 210, most of the light emitted from the display screen 210 is visible light with natural light characteristics, and almost no infrared light is included. As shown in FIG. 5, when the display screen 210 emits light I₂When transmitted to the inside of the electronic device 10, the light I₂Linearly polarized light is formed when the light passes through the second polarizer 221, for example, linearly polarized light I is formed₂₁Linearly polarized light I₂₁May be parallel to the second polarization axis of the second polarization element 221, linearly polarized light I₂₁May be received by the first light sensor 230.

Light ray I₂Linearly polarized light is also formed when the light passes through the third polarizer 222, for example, linearly polarized light I is formed₂₂Linearly polarized light I₂₂May be parallel to the third polarization axis of the third polarization element 222, linearly polarized light I₂₂May be received by the second light sensor 240.

It is understood that natural light in any direction can be decomposed into light parallel to the polarizing axis and light perpendicular to the polarizing axis based on the characteristics of natural light, since the polarizing element can allow polarizationLight with the polarization direction parallel to the polarization axis of the light passes through the polarizer, but light with the polarization direction perpendicular to the polarization axis of the light does not pass through the polarizer, so that half of the light can be transmitted in the process of transmitting natural light through the polarizer. For example, linearly polarized light I₁₁Has a light intensity approximately equal to that of the visible ray I₁Half of the light intensity of (a); linearly polarized light I₂₁With linearly polarized light I₂₂All approximately equal to the light I emitted from the display screen 210₂Half of the light intensity of (c).

At this time, the first light sensor 230 may receive one-half of the visible light I emitted from the display screen 210₂One-half of the visible rays I of the ambient light transmitted through the display screen 210₁And all infrared rays I in the ambient light passing through the display screen 210_IR. The second light sensor 240 may receive one-half of the visible light I emitted from the display screen 210₂And all infrared rays I in the ambient light passing through the display screen 210_IR. The processor 300 of the electronic device 10 may calculate the ratio of the infrared light in the ambient light according to the light received by the first light sensor 230 and the light received by the second light sensor 240.

In the electronic device 10 of the embodiment of the application, by arranging the first polarization element 211, the second polarization element 221, and the third polarization element 222, the first light sensor 230 can receive the visible light emitted by the display screen 210 and the visible light and the infrared light in the ambient light passing through the display screen 210, and the second light sensor 240 can receive the visible light emitted by the display screen 210 and the infrared light in the ambient light passing through the display screen 210; on the other hand, the information such as the intensity of the external environment light, the color temperature of the environment light, the ratio of infrared light in the environment light, etc. can be calculated based on the difference of the light received by the two light sensors, so that the influence caused by the light emission of the light emitting layer 212 can be reduced or avoided, that is, the influence caused by the light emission of the display screen 210 can be reduced or avoided, and the accuracy of the detection of the environment light can be improved.

Referring to fig. 6 in conjunction with fig. 3, fig. 6 is a third schematic view of a display device according to an embodiment of the present disclosure. The display screen 210 may further include a first quarter wave plate 213, the first quarter wave plate 213 is disposed between the first polarization element 211 and the second polarization element 221, and the first quarter wave plate 213 may be disposed opposite to the first light sensor 230 and the second light sensor 240. The dimming component 220 may further include a second quarter wave plate 223 and a third quarter wave plate 224, and the second quarter wave plate 223 and the third quarter wave plate 224 may be disposed in the same layer.

The first polarization element 211, the first quarter-wave plate 213, the light emitting layer 212, the second quarter-wave plate 223, the second polarization element 221 and the first light sensor 230 may be sequentially stacked, the second polarization element 221 may be located between the second quarter-wave plate 223 and the first light sensor 230, and the second quarter-wave plate 223 may be disposed opposite to the second polarization element 221 and the first light sensor 230.

Similarly, the first polarization element 211, the first quarter-wave plate 213, the light-emitting layer 212, the third quarter-wave plate 224, the third polarization element 222, and the second sensor may also be sequentially stacked, the third polarization element 222 may be located between the third quarter-wave plate 224 and the second light sensor 240, and the third quarter-wave plate 224 is disposed opposite to the third polarization element 222 and the second light sensor 240.

The quarter-wave plate may act as a phase retardation for visible light. When the vertically incident visible light (normal light) passes through the quarter-wave plate, the phase difference between the emitted ordinary light (O light) and the extraordinary light (e light) is 1/4 λ wavelength. In the light path, the quarter-wave plate can change linearly polarized light into circularly polarized light or elliptically polarized light; or vice versa.

It can be understood that, based on the inherent characteristics of the quarter-wave plate, the quarter-wave plate hardly acts as a phase retardation for infrared light, i.e., the quarter-wave plate hardly changes the optical path of infrared light.

It can be understood that, based on the light characteristics of the quarter-wave plate, the direction of the light vector propagating in the quarter-wave plate at a slow speed is generally referred to as a slow axis in the industry, and the direction of the light vector propagating in the quarter-wave plate at a fast speed is referred to as a fast axis in the industry. In the embodiment shown in fig. 6, the visible light in the ambient light passes through two polarizers and two quarter wave plates to reach the first light sensor 230 and the second light sensor 240. Based on the light characteristics of the quarter-wave plate, when the fast axes of the two layers of quarter-wave plates are parallel to each other or the slow axes of the two layers of quarter-wave plates are parallel to each other, the two layers of quarter-wave plates can change the polarization direction of visible light rays in ambient light by 90 degrees. When the fast axes of the two layers of quarter-wave plates are mutually perpendicular or the slow axes of the two layers of quarter-wave plates are mutually perpendicular, the polarization directions of the light rays are not changed by the two layers of quarter-wave plates.

Based on this, the embodiment of the present application can adjust the relationship between the polarization axes of the respective polarization elements and the relationship between the fast axis/slow axis of the respective quarter-wave plates, so that the first light sensor 230 receives the visible light emitted by the display screen 210 and the visible light and the infrared light in the ambient light transmitted through the display screen 210, and the second light sensor 240 receives the visible light emitted by the display screen 210 and the infrared light in the ambient light transmitted through the display screen 210.

Please refer to fig. 7 and 8 in combination with fig. 6, in which fig. 7 is a first light propagation diagram of the display device shown in fig. 6, and fig. 8 is a second light propagation diagram of the display device shown in fig. 6. In the embodiment of the present application, the polarization axis of the second polarization element 221 may be parallel to the polarization axis of the first polarization element 211, the polarization axis of the third polarization element 222 may be perpendicular to the polarization axis of the first polarization element 211, and the slow axis of the second quarter-wave plate 223 and the slow axis of the third quarter-wave plate may be perpendicular to the slow axis of the first quarter-wave plate 213.

As shown in fig. 7, when the ambient light is visible ray I₁When the light is transmitted to the inside of the electronic device 10 through the display screen 210, the visible light I₁Linearly polarized light I is formed when the first polarizer 211 is transmitted₁₁Linearly polarized light I₁₁May be parallel to the first polarizing axis of the first polarizing element 211. Linearly polarized light I₁₁Continuing toward the first quarterThe wave plate 213 transmits and forms circularly polarized light after passing through the first quarter wave plate 213; the circularly polarized light passes through the second quarter-wave plate 223 and the third quarter-wave plate 224 to form linearly polarized light I again₁₂And I₁₃Since the slow axis of the second quarter-wave plate 223 and the slow axis of the third quarter-wave plate 224 are perpendicular to the slow axis of the first quarter-wave plate 213, the linearly polarized light I₁₁The polarization direction of the linear polarization light I can not be changed after passing through one of the two layers of the quarter wave plates, so that the linear polarization light I₁₂、I₁₃All the polarization directions of the polarized light I₁₁Are parallel.

Since the second polarization axis of the second polarization element 221 is parallel to the first polarization axis of the first polarization element 211, the linearly polarized light I₁₂May be parallel to the second polarization axis of the second polarization element 221, linearly polarized light I₁₂The light may be transmitted through the second polarizing element 221 and into the first light sensor 230, so that the first light sensor 230 may receive visible rays in ambient light.

Since the third polarization axis of the third polarization element 222 is perpendicular to the first polarization axis of the first polarization element 211, the linearly polarized light I₁₃May be perpendicular to the second polarization axis of the second polarization element 221, linearly polarized light I₁₃The light cannot enter the first light sensor 230 through the second polarizing element 221, so that the second light sensor 240 does not receive visible light in ambient light.

It will be appreciated that in the embodiment shown in figure 7, linearly polarised light I₁₁The circularly polarized light formed after passing through the first quarter-wave plate 213 can be reflected by a metal electrode (especially a metal cathode) in the light emitting layer 212, and then the rotating direction thereof is changed by 90 degrees, and the reflected light cannot pass through the first polarization element 211 again, so that the first polarization element 211 and the first quarter-wave plate 213 cooperate with each other to solve the reflection problem of the ambient light.

It will be appreciated that the infrared ray I is substantially phase retarded by the quarter-wave plate, and thus_IRCan directly transmit each polarization element and wave plate elementAnd into the first and second

light sensors

230 and 240.

At this time, the first light sensor 230 may receive visible light of the ambient light transmitted through the display screen 210 and infrared light of the ambient light transmitted through the display screen 210, and the second light sensor 240 may receive infrared light of the ambient light transmitted through the display screen 210.

As shown in FIG. 8, when the display screen 210 emits light I₂When transmitted to the inside of the electronic device 10, the light I₂The light passing through the second quarter-wave plate 223 and the third quarter-wave plate 224 forms a set of polarized light, circularly polarized light and elliptically polarized light. Half of the collected light can continue to pass through the second polarizer 221 and form polarized light I₂₁Polarized light I₂₁May be received by the first light sensor 230. The other half of the collected light can continue to pass through the third polarizer 222 and form polarized light I₂₂Polarized light I₂₂May be received by the second light sensor 240. At this time, both the first light sensor 230 and the second light sensor 240 may receive the visible light emitted from the display screen 210.

In the above embodiments shown in fig. 6 to 8, the second polarization axis of the second polarization element 221 may also be perpendicular to the first polarization axis of the first polarization element 211, the third polarization axis of the third polarization element 222 may also be parallel to the first polarization axis of the first polarization element 211, and the slow axis of the second quarter-wave plate 223 and the slow axis of the third quarter-wave plate may also be both parallel to the slow axis of the first quarter-wave plate 213.

At this time, since the slow axis of the second quarter-wave plate 223 and the slow axis of the third quarter-wave plate 224 are both parallel to the slow axis of the first quarter-wave plate 213, the linearly polarized light I in fig. 7₁₁After passing through one of the two layers of quarter wave plates, the polarization direction of the wave plate is changed. Thus, linearly polarized light I in FIG. 7₁₂Will change the polarization direction of linearly polarized light I₁₂Will be in the same direction as the polarized light I₁₁Will also be perpendicular to the first polarizing axis of the first polarizing element. When the second polarization axis of the second polarization element 221 is opposite to the first polarization axisFirst polarization axis of optical element 211 is vertical, linearly polarized light I₁₂Will be parallel to the second polarization axis of the second polarization element 221, linearly polarized light I₁₂May be transmitted through the second polarization element 221 and received by the first light sensor 230.

Similarly, linear polarization I₁₃Will also change its polarization direction and will react with the polarized light I₁₁Will also be perpendicular to the first polarizing axis of the first polarizing element. When the second polarization axis of the third polarization element 222 is parallel to the first polarization axis of the first polarization element 211, the linearly polarized light I₁₃Will be perpendicular to the second polarization axis of the third polarization element 222, linearly polarized light I₁₃Is not transmitted through the third polarizing element 222 and is received by the second light sensor 240.

It is to be understood that, since the emitted light of the light-emitting layer 212 passes through only the second quarter-wave plate 223 and the second polarizing element 221, or passes through the third quarter-wave plate 224 and the third polarizing element 222, the emitted light of the light-emitting layer 212 may pass through the second quarter-wave plate 223 and the second polarizing element 221 and enter the first light sensor 230, and the emitted light of the light-emitting layer 212 may also pass through the third quarter-wave plate 224 and the third polarizing element 222 and enter the second light sensor 240.

At this time, the first light sensor 230 may receive visible light emitted from the display screen 210, visible light in the ambient light transmitted through the display screen 210, and infrared light, and the second light sensor 240 may receive visible light emitted from the display screen 210 and infrared light in the ambient light transmitted through the display screen 210.

In the above embodiments shown in fig. 6 to 8, the second polarization axis of the second polarization element 221 may also be parallel to the first polarization axis of the first polarization element 211, the third polarization axis of the third polarization element 222 may be parallel to the first polarization axis of the first polarization element 211, the slow axis of the second quarter-wave plate 223 may be perpendicular to the slow axis of the first quarter-wave plate 213, and the slow axis of the third quarter-wave plate 224 may also be parallel to the slow axis of the first quarter-wave plate 213.

At this time, the first light sensor 230 may also receive visible light emitted from the display screen 210 and visible light and infrared light in the ambient light transmitted through the display screen 210, and the second light sensor 240 may receive visible light emitted from the display screen 210 and infrared light in the ambient light transmitted through the display screen 210.

In the above embodiments shown in fig. 6 to 8, the second polarization axis of the second polarization element 221 may also be perpendicular to the first polarization axis of the first polarization element 211, the third polarization axis of the third polarization element 222 may be perpendicular to the first polarization axis of the first polarization element 211, the slow axis of the second quarter-wave plate 223 is parallel to the slow axis of the first quarter-wave plate 213, and the slow axis of the third quarter-wave plate 224 is perpendicular to the slow axis of the first quarter-wave plate 213.

It should be understood that the above is only an exemplary example of the display screen 210 and the dimming component 220 according to the embodiment of the present disclosure, and any schemes that enable the first light sensor 230 and the second light sensor 240 to receive the above light are within the scope of the embodiment of the present disclosure.

Referring to fig. 9, fig. 9 is a fourth schematic view of a display device according to an embodiment of the present application. The display device 200 of the embodiment of the present application may further include a light diffusing element 250. The light diffusing element 250 may be disposed between the display screen 210 and the dimming component 220.

For example, as shown in fig. 9, the light diffusion member 250 may be disposed between the light emitting layer 212 and the second and third

quarter wave plates

223 and 224. For another example, in the embodiment shown in fig. 3, the light diffusion element 250 may also be disposed between the light-emitting layer 212 and the second and third

polarizing elements

221 and 222. Wherein the light diffusing member 250 may be disposed opposite to the first and second

light sensors

230 and 240.

It is understood that the light diffusing element 250 can be used to refract, reflect and scatter light to achieve the effect of diffusing and mixing light. When the light-emitting layer 212 displays information, the OLEDs disposed thereon are not always turned on or off at the same time, which causes the total amount of light emitted from the OLEDs in different regions of the light-emitting layer 212 to be different.

If the total amount of light emitted by the OLEDs in the light emitting layer 212 corresponding to the first light sensor 230 and the second light sensor 240 is different, the light received by the first light sensor 230 and the second light sensor 240 includes an error factor that the total amount of light emitted by the OLEDs in the light emitting layer 212 is different, so that an error exists in calculating the ratio of infrared light in the ambient light according to the light received by the first light sensor 230 and the second light sensor 240.

The display device 200 of the embodiment of the application, the light diffusion element 250 is arranged between the display screen 210 and the dimming component 220, and the light diffusion element 250 can enable the light emitted by the dimming component 220 and the ambient light to be uniformly mixed, so that the light reaching the dimming element is approximately the same, the error factor that the total amount of the light emitted by the OLEDs in the display screen 210 in different areas is different can be reduced, and the detection accuracy of the first light sensor 230 and the second light sensor 240 is improved.

Based on the above-mentioned structure of the display device 200, when the first light sensor 230 receives the visible light and the infrared light in the visible light emitted from the display screen 210 and the ambient light passing through the display screen 210, and the second light sensor 240 receives the visible light and the infrared light in the ambient light passing through the display screen 210, the processor 300 can calculate the ratio of the infrared light in the ambient light by the light received by the first light sensor 230 and the second light sensor 240.

It is understood that at least a first channel (e.g., R channel), a second channel (e.g., G channel), a third channel (e.g., B channel), and a fourth channel (e.g., C channel) may be disposed on each of the first light sensor 230 and the second light sensor 240. Each channel may have different transmittances for different bands of light so that the first light sensor 230 and the second light sensor 240 can respectively detect different bands of light.

For example, please refer to fig. 10, fig. 10 is a schematic diagram of transmittance of a light sensor according to an embodiment of the present application. The light sensor in fig. 10 may be the first light sensor 230 or the second light sensor 240. That is, the first and second

light sensors

230 and 240 may have the same transmittance for the same wavelength band of light,

as shown in fig. 10, the curve S1 may represent the transmittance curve of the first channel on the first light sensor 230 or the second light sensor 240 for the first band of light; the curve S2 may represent the transmittance curve of the second channel on the first light sensor 230 or the second light sensor 240 for the second band of light; the curve S3 may represent the transmittance curve of the third channel on the first light sensor 230 or the second light sensor 240 for the third wavelength band of light; the curve S4 may represent the transmittance curves of the fourth channel of the first light sensor 230 or the second light sensor 240 for the light of the first, second, and third wavelength bands.

As can be seen from the curve S1, there are two peaks at 640 nm and 800 nm in the curve S1, and thus the first channels of the first light sensor 230 and the second light sensor 240 can detect the visible light and infrared light intensity information of the first wavelength band.

As can be seen from the curve S2, the curve S2 has two peaks at 550 nm and 800 nm, and the second channel of the first light sensor 230 and the second light sensor 240 can detect the visible light and infrared light intensity information of the second wavelength band.

As can be seen from the curve S3, the curve S3 has two peaks at 470 nm and 800 nm, and the third channels of the first light sensor 230 and the second light sensor 240 can detect the visible light and the infrared light intensity information of the third wavelength band.

As can be seen from the curve S4, the curve S4 has a larger transmittance in the range of 420 nm to 700 nm and a peak at 800 nm, and the fourth channels of the first light sensor 230 and the second light sensor 240 can detect the visible light and the infrared light intensity information of the first wavelength band, the second wavelength band, and the third wavelength band.

It is understood that the first, second and third bands may be different from each other. For example, the first wavelength band may be a red wavelength band (620 nm to 750 nm), the second wavelength band may be a green wavelength band (490 nm to 620 nm), and the third wavelength band may be a blue wavelength band (380 nm to 490 nm).

It is understood that, as can be seen from the curves S1 to S4, the infrared light intensity information can be detected by any one of the channels of the first light sensor 230 or the second light sensor 240.

Based on this, the processor 300 may calculate the infrared light intensity IR in the ambient light in the first light sensor or the second light sensor according to the following formula:

IR＝(R+G+B-C)/2#(1)

r, G, B, C are the light intensity values detected by the first to fourth channels of the first light sensor 230 or the second light sensor 240, respectively, and R, G, B, C can be directly read from the first light sensor 230 or the second light sensor 240.

Based on the aforementioned structure of the display device 200, the first light sensor 230 and the second light sensor 240 receive different light beams, and the processor 300 can calculate the infrared light intensity IR in the ambient light detected by the first light sensor 230 according to the above formula (1)₁And the intensity C of the visible light in the light emitted from the display screen 210 and the ambient light detected by the first light sensor 230₁＇：

IR₁＝(R₁+G₁+B₁-C₁)/2#(2)

C₁＇＝C₁-IR₁#(3)

Wherein R is₁The intensities of the visible light rays emitted from the display screen 210 and the visible light rays in the ambient light transmitted through the display screen 210, and the infrared light rays in the ambient light transmitted through the display screen 210, which are detected by the first light sensor 230, in the first wavelength band; g₁A second light detected by the first light sensor 230The intensity of the visible light emitted by the display screen 210 and the visible light in the ambient light passing through the display screen 210, and the intensity of the infrared light in the ambient light passing through the display screen 210; b is₁The intensities of the visible light emitted from the display screen 210 and the visible light in the ambient light transmitted through the display screen 210, and the infrared light in the ambient light transmitted through the display screen 210, which are detected by the first light sensor 230, in the third wavelength band; c₁The intensities of the visible light and the infrared light in the visible light emitted from the display screen 210 and the ambient light transmitted through the display screen 210 are detected by the first light sensor 230.

According to the above formula (1), the processor 300 can calculate the infrared light intensity IR in the ambient light detected by the second light sensor 240₂And the second light sensor 240 detects the intensity C of visible light in the light emitted from the display screen₂＇：

IR₂＝(R₂+G₂+B₂-C₂)/2#(4)

C₂＇＝C₂-IR₂#(5)

Wherein R is₂The intensity of the visible light emitted from the display screen 210 in the first wavelength band and the intensity of the infrared light in the ambient light transmitted through the display screen 210, which are detected by the second light sensor 240; g₂The intensity of the visible light emitted from the display screen 210 in the second wavelength band detected by the second light sensor 240 and the intensity of the infrared light in the ambient light transmitted through the display screen 210; b is₂The intensity of the visible light emitted from the display screen 210 in the third wavelength band and the intensity of the infrared light in the ambient light transmitted through the display screen 210, which are detected by the second light sensor 240; c₂The intensity of the visible light emitted from the display screen 210 and the intensity of the infrared light in the ambient light transmitted through the display screen 210 are detected by the second light sensor 240.

It is understood that, in theory, the infrared light of the ambient light transmitted through the display screen 210 received by the first light sensor 230 and the second light sensor 240 should be equal, i.e., the IR light should be equal₁Is theoretically equal to IR₂. However, since the wavelength band of visible light is about 380 nm to 750 nm, the wavelength band of infrared light is about 380 nm to 750 nmThe band range is greater than 760 nanometers so that the visible band range is contiguous with the infrared band range. Although the polarizer and the quarter-wave plate in the display device 200 do not have the polarization effect or the phase retardation effect on the infrared band in theory, the polarizer and the quarter-wave plate still have a certain polarization and phase retardation effect on the infrared band adjacent to the visible light band, thereby causing the IR₁And IR₂Not equal.

It is understood that the second light sensor 240 may filter the visible wavelength band of the ambient light under the action of the polarizer and the quarter-wave plate, and in this process, the polarizer and the quarter-wave plate may filter the infrared wavelength band of the ambient light. The first light sensor 230 can still receive the visible light band and the infrared light band of the ambient light at the same time under the action of the polarizer and the quarter-wave plate, and the polarizer and the quarter-wave plate hardly filter the infrared band of the ambient light in the process, so in the above formula (2) and formula (4), the IR is obtained₁Can reflect the intensity of infrared light in the environment light.

It can be understood that, since the second light sensor 240 cannot detect the visible light band in the ambient light, the difference between the above equation (3) and equation (4) is the intensity of the visible light in the ambient light. According to the fact that the ratio of the infrared light in the ambient light is equal to the ratio of the intensity of the infrared light in the ambient light to the intensity of the visible light in the ambient light, in combination with the above formulas (2) to (5), the following formula (6) can be derived, and the processor 300 can calculate the ratio K of the infrared light in the ambient light according to the following formula (6)_IR:

It is understood that the above equation (6) may be stored in the electronic device 10 in advance, for example, on a memory of the electronic device 10. R in the above formula₁、G₁、B₁、C₁、R₂、G₂、B₂、C₂All can be directly from the first light sensor 230. Read on the second light sensor 240.

It is understood that the embodiment of the present application may also adopt other manners to calculate the infrared light ratio K in the ambient light_IR。

For example, the first light sensor 230 and the second light sensor 240 may each include first to fifth channels, wherein the first to fourth channels may respectively and correspondingly detect the intensity of the visible light and the infrared light of one of the fourth to seventh bands, and the fifth channel may detect the intensity of the visible light and the infrared light of all the bands.

It is understood that the fourth to seventh wavelength bands are different wavelength bands, and in this case, the processor 300 may calculate the ratio K of the infrared light in the ambient light according to the following formula_IR：

Wherein M is₁The intensities of the visible light emitted from the display screen 210 and the visible light in the ambient light transmitted through the display screen 210, and the infrared light in the ambient light transmitted through the display screen 210, which are detected by the first light sensor 230, in the fourth wavelength band; n is a radical of₁The intensities of the visible light emitted from the display screen 210 and the visible light in the ambient light transmitted through the display screen 210, and the infrared light in the ambient light transmitted through the display screen 210, which are detected by the first light sensor 230, in the fifth wavelength band; x₁The intensities of the visible light emitted from the display screen 210 and the visible light in the ambient light transmitted through the display screen 210, and the infrared light in the ambient light transmitted through the display screen 210, which are detected by the first light sensor 230, in the sixth wavelength band; y is₁The intensities of the visible light emitted from the display screen 210 and the visible light in the ambient light transmitted through the display screen 210, and the infrared light in the ambient light transmitted through the display screen 210, which are detected by the first light sensor 230, in the seventh wavelength band; g₁The intensities of the visible light rays in the fifth to seventh wavelength bands emitted from the display screen 210 and the visible light rays and the infrared light rays in the ambient light transmitted through the display screen 210 are detected by the first light sensor 230.

M₂The intensity of the infrared light in the visible light emitted from the display screen 210 in the fourth wavelength band and the ambient light transmitted through the display screen 210, which is detected by the second light sensor 240; n is a radical of₂The intensity of the visible light emitted from the display screen 210 in the fifth wavelength band detected by the second light sensor 240 and the intensity of the infrared light in the ambient light transmitted through the display screen 210; x₂The intensity of the visible light emitted from the display screen 210 in the sixth wavelength band detected by the second light sensor 240 and the intensity of the infrared light in the ambient light transmitted through the display screen 210; y is₂The intensity of the infrared ray in the visible ray emitted from the display screen 210 in the seventh wavelength band and the ambient light transmitted through the display screen 210, which is detected by the second light sensor 240; g₂The intensities of the visible light rays in the fifth to seventh wavelength bands emitted from the display screen 210 and the infrared light rays in the ambient light transmitted through the display screen 210 are detected by the second light sensor 240.

It is understood that the ratio K of the infrared light in the ambient light is calculated for the embodiments of the present application only_IRIn a number of embodiments. The embodiment of the application calculates the ratio K of infrared light in ambient light_IRThe method of (6) and (7) are not limited to this, and the modification formula or the interpolation formula obtained by those skilled in the art based on the embodiments of the present application can be within the scope of the present application.

In the electronic device 10 of the embodiment of the application, the processor 300 may determine the ratio of infrared light in ambient light according to the above formula according to the light received by the first light sensor 230 and the second light sensor 240, on one hand, the above formula is simple, the processor 300 only needs to control the two light sensors to perform light detection, and does not need to perform complicated screenshot contrast analysis in the related art to eliminate the operation of screen light leakage noise reduction, so that the workload of the processor 300 is greatly reduced, the electronic device 10 is not jammed, and the electronic device is particularly suitable for being applied in a scene with a high refresh rate; on the other hand, the processor 300 calculates the ratio of infrared light in ambient light by using the above formula, which excludes the influence of screen light leakage on visible light in ambient light and the influence of visible light in ambient light on infrared light, so that the calculation of the ratio of infrared light in ambient light is more accurate.

The ambient light outside the display screen 210 may be sunlight emitted from the sun, or light emitted from an incandescent lamp, a fluorescent lamp, or the like. Different ambient lights have different light emission spectra, which results in the need to calculate the ambient light intensity and the ambient light color temperature in combination with different ambient light coefficients for different ambient lights. After the processor 300 calculates the ratio of the infrared light in the ambient light, the processor 300 may determine the category of the ambient light according to the ratio of the infrared light in the ambient light.

Referring to fig. 11, fig. 11 is a schematic diagram illustrating a light emission spectrum of different types of ambient light according to an embodiment of the present disclosure. The ambient light may include six types, including cwf (cool white fluorescence), U30(Ultralume 3000fluorescence), TL84(TL84 fluorescence), D65 (bright-Neutral), a (incorporated) and hz (horizon).

As shown in fig. 11, a curve S5 represents a second emission spectrum of the D65 ambient light; curve S6 shows a second luminescence spectrum of U30 ambient light; curve S7 represents a second luminescence spectrum of TL84 ambient light; curve S8 represents a second luminescence spectrum of CWF ambient light; curve S9 shows a second luminescence spectrum for ambient light a; curve S10 represents a second luminescence spectrum of HZ ambient light.

As can be seen from the curves S6, S7, and S8, the spectral graphs of the ambient light U30, the ambient light TL84, and the ambient CWF are relatively similar, and the ratio of infrared rays in the ambient light is relatively low. Ambient light U30, ambient light TL84, and ambient CWF may be the first category of ambient light.

As can be seen from the curves S9 and S10, the spectral plots of the ambient light HZ and the ambient light a are relatively similar, and the ratio of infrared rays in the ambient light is relatively high. Ambient a and ambient light HZ may be considered as a second category of ambient light.

As can be seen from the curve S5, the spectrum of the ambient light D65 is much different from that of other ambient light, and the infrared ray ratio in the ambient light D65 is centered. Ambient light D65 may be included as a third category of ambient light.

After the processor 300 calculates the ratio of the infrared light in the ambient light, the processor 300 may determine the category of the ambient light according to the magnitude of the ratio of the infrared light in the ambient light.

For example, if the ratio K of infrared light in the ambient light_IRWhen the K is lower than the first threshold value, the K can be judged_IRSmaller, and correspondingly, the ambient light detected by the light sensor may be the first category of ambient light U30, ambient light TL84, or ambient CWF. If the ratio K of infrared light in the ambient light_IRAbove the second threshold, it may be determined that KIR is high, and accordingly, the ambient light detected by the light sensor may be the second category of ambient light a and ambient light HZ. If the ratio K of infrared light in the ambient light_IRBetween the first threshold and the second threshold, K can be judged_IRModerately, and correspondingly, the ambient light detected by the light sensor may be a third category of ambient light D65.

When the processor 300 determines the type of the ambient light, the ambient light intensity and the ambient light color temperature may be calculated according to the preset ambient light coefficient. For example, the processor 300 may calculate the ambient light intensity Q according to the following equations (8) and (9):

the DGF is an ambient light coefficient, different types of ambient light have different ambient light coefficients, a plurality of ambient light coefficients may be preset in the electronic device 10, and after the processor 300 determines the type of the ambient light according to the infrared light ratio in the ambient light, the corresponding ambient light coefficient may be called according to the type of the ambient light.

It is understood that the electronic device 10 may also store a mapping relation table between the ambient light coefficient and the ratio of the infrared light in the ambient light, and the processor 300 may also directly determine the ambient light coefficient according to the ratio of the infrared light in the ambient light.

When the processor 300 determines the type of ambient light and the intensity of the ambient light, the color temperature of the ambient light can also be determined. It is understood that the light color temperature may represent 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 300 may draw a spectrum of the ambient light according to the type of the ambient light and the intensity of the ambient light, and determine the color temperature value of the ambient light according to the spectrum.

For example, the processor 300 may calculate the color temperature value of the ambient light according to a color temperature-light intensity calculation formula. For example, the processor 300 may calculate the color temperature CCT as follows:

CCT＝aQ+b#(10)

wherein a is a color temperature coefficient and is a fixed value; b is a color temperature compensation value and is also a fixed value; q is the intensity of the ambient light. The processor 300 may calculate the color temperature value of the ambient light according to equation (8) in combination with equation (7).

It is understood that a and b may be pre-stored in the memory of the electronic device 10, different types of ambient light have different color temperature coefficients a and color temperature compensation values b, and a plurality of color temperature coefficients a and color temperature compensation values b may be pre-stored in the electronic device 10, and after the processor 300 determines the type of the ambient light according to the ratio of the infrared light in the ambient light, the corresponding color temperature coefficients a and color temperature compensation values b may be called according to the type of the ambient light.

In the display device 200 and the electronic apparatus 10 of the embodiment of the application, the processor 300 can calculate the ambient light intensity and the ambient light color temperature by combining the light values detected by the first light sensor 230 and the second light sensor 240 according to the above formula, on one hand, the above formula is simple, and the calculation amount of the processor 300 is reduced; on the other hand, in the above formula, not only the influence of the light leakage from the display screen 210 on the ambient light intensity and the ambient light color temperature, but also the influence of the infrared light on the ambient light intensity and the ambient light color temperature are considered, so that the calculation of the ambient light intensity and the ambient light color temperature is more accurate.

Based on the structures of the display device 200 and the electronic device 10, the embodiment of the present application further provides a method for controlling an electronic device, which can be applied to the electronic device 10 and the display device 200 in any of the embodiments.

Referring to fig. 12, fig. 12 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 device 10 includes:

101. acquiring the intensity of a first light ray by a first light ray sensor 230, wherein the first light ray comprises a visible light ray emitted by the display screen 210 and a visible light ray and an infrared ray in the ambient light passing through the display screen 210;

102. acquiring the intensity of a second light ray through the second light ray sensor 240, wherein the second light ray includes the light ray emitted by the display screen 210 and the ambient light passing through the display screen 210;

103. calculating the ratio of infrared light in the ambient light according to the intensity of the first light and the intensity of the second light;

104. the electronic device 10 is controlled according to the ratio of infrared light in the ambient light.

The electronic device 10 may obtain a first light intensity value detected by the first light sensor 230, which may include the aforementioned R₁、G₁、B₁、C₁Or M₁、N₁、X₁、Y₁、G₁(ii) a The electronic device 10 may also obtain a second light intensity value detected by the second light sensor 240, which may include the aforementioned R₂、G₂、B₂、C₂Or M₂、N₂、X₂、Y₂、G₂。

After the electronic device 10 obtains the first light intensity value and the second light intensity value, the ratio of infrared light in the ambient light may be calculated according to the first light intensity value and the second light intensity value, for example, the electronic device 10 may calculate the ratio K of infrared light in the ambient light according to the foregoing formula (6) or formula (7)_IR. When the electronic device 10 calculates the environmentRatio of light to mid-infrared light K_IRThe electronic device 10 may then be controlled based on the ratio of infrared light in the ambient light.

For example, please refer to fig. 13, and fig. 13 is a second flowchart illustrating a control method of an electronic device according to an embodiment of the present application. The control method of the electronic device 10 further includes:

201. acquiring the intensity of a first light ray by a first light ray sensor 230, wherein the first light ray comprises a visible light ray emitted by the display screen 210 and a visible light ray and an infrared ray in the ambient light passing through the display screen 210;

202. acquiring the intensity of a second light ray through the second light ray sensor 240, wherein the second light ray includes the light ray emitted by the display screen 210 and the ambient light passing through the display screen 210;

203. calculating the ratio of infrared light in the ambient light according to the intensity of the first light and the intensity of the second light;

204. determining the type of the ambient light according to the ratio of the infrared light in the ambient light;

205. calculating at least one of an ambient light intensity and an ambient light color temperature according to the category of the ambient light;

206. and controlling the electronic equipment according to at least one of the ambient light intensity and the ambient light color temperature.

The electronic device 10 may determine the ratio K of the infrared light in the ambient light_IRThe category of the ambient light is determined. For example, the ratio K can be determined according to the infrared light in the ambient light_IRAnd judging the category of the ambient light according to the magnitude of the first threshold and the second threshold. It can be understood that the specific determination process can be found in the foregoing scheme, and is not described herein again.

When the category of ambient light is determined, the electronic device 10 may calculate the ambient light intensity according to equation (8) or equation (9) above. The electronic device 10 may also calculate the ambient light color temperature according to the aforementioned equation (10). The specific calculation process can also refer to the above scheme, and is not described herein again.

It will be appreciated that the electronic device 10 may be controlled when the ambient light category, the ambient light intensity and the ambient light color temperature are determined. For example, the display brightness and the display color of the electronic device 10 may be changed according to the type of the ambient light, the intensity of the ambient light, and the color temperature of the ambient light. For another example, the display mode of the electronic device 10 may be controlled and switched between the daytime display mode and the nighttime display mode according to the ambient light intensity and the ambient light color temperature. For another example, the photographing mode of the electronic device 10 may be controlled, the photographing background may be changed, and the like according to the ambient light intensity and the ambient light color temperature.

It should be noted that the control method of the electronic device 10 according to the embodiment of the present application may be combined with each other in the case where the steps do not conflict with each other, and the combination is also within the scope of the control method of the electronic device 10 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

1. A display device, comprising:

a display screen;

the dimming component is arranged on one side of the display screen;

2. The display device according to claim 1, wherein the display screen comprises:

the first light sensor is arranged on the first light source, the second light sensor is arranged on the second light source, and the first light sensor is arranged on the second light source;

the dimming component comprises:

the second light polarization element is arranged opposite to the first light sensor and provided with a second polarization axis; and

the third light polarization element is arranged opposite to the second light sensor and provided with a third polarization axis; wherein the content of the first and second substances,

the second polarizing axis is parallel to the first polarizing axis, and the third polarizing axis is perpendicular to the first polarizing axis.

3. The display device according to claim 1, wherein the display screen comprises:

the first light sensor is arranged on the first light source, the second light sensor is arranged on the second light source, and the first light sensor is arranged on the second light source; and

the first quarter-wave plate is arranged on one side, facing the dimming assembly, of the first polarization element, and the first quarter-wave plate is arranged opposite to the first light sensor and the second light sensor;

the dimming component further comprises:

the second light polarization element is arranged opposite to the first light sensor and provided with a second polarization axis;

the third light polarization element is arranged opposite to the second light sensor and provided with a third polarization axis;

the second polarization element is positioned between the second quarter-wave plate and the first light sensor, and the second quarter-wave plate is arranged opposite to the first light sensor; and

the third polarization element is positioned between the third quarter-wave plate and the second light sensor, and the third quarter-wave plate is arranged opposite to the second light sensor;

the second polarization axis is parallel to the first polarization axis, the third polarization axis is perpendicular to the first polarization axis, and the slow axis of the second quarter-wave plate and the slow axis of the third quarter-wave plate are both perpendicular to the slow axis of the first quarter-wave plate.

4. The display device according to claim 1, wherein the display screen further comprises:

the dimming component further comprises:

the polarization axis of the second polarization element is perpendicular to the polarization axis of the first polarization element, the polarization axis of the third polarization element is parallel to the polarization axis of the first polarization element, and the slow axis of the second quarter-wave plate and the slow axis of the third quarter-wave plate are both parallel to the slow axis of the first quarter-wave plate.

5. The display device according to any one of claims 1 to 4, further comprising:

the light diffusion element is arranged between the display screen and the dimming assembly, and the light diffusion element is arranged opposite to the first light sensor and the second light sensor.

6. An electronic device, comprising:

a display screen;

the dimming component is arranged on one side of the display screen;

7. The electronic device of claim 6, wherein the processor is further configured to:

determining the type of the ambient light according to the ratio of the infrared light in the ambient light;

calculating at least one of the ambient light intensity and the ambient light color temperature according to the category of the ambient light.

8. The electronic device of claim 6, wherein the display screen comprises:

the dimming component comprises:

9. The electronic device of claim 6, wherein the display screen comprises:

the first quarter wave plate is arranged on one side, facing the dimming assembly, of the first polarization element, and is arranged opposite to the first light sensor and the second light sensor;

the dimming component further comprises:

10. The electronic device of claim 6, wherein the display screen further comprises:

the dimming component further comprises:

11. The electronic device of claim 6, further comprising:

12. The electronic device of any of claims 6-11, wherein the processor is configured to determine the ambient light mid-ir ratio according to the following equation:

wherein, K_IRThe ratio of infrared light in the ambient light is obtained;

R₁the intensity of visible light rays emitted by the display screen and visible light rays in the ambient light penetrating through the display screen in a first wave band detected by the first light sensor and the intensity of infrared light rays in the ambient light penetrating through the display screen;

G₁the intensities of visible light rays emitted by the display screen and visible light rays in the ambient light penetrating through the display screen in a second wave band detected by the first light sensor and infrared light rays in the ambient light penetrating through the display screen;

B₁the intensities of visible light rays emitted by the display screen and visible light rays in the ambient light penetrating through the display screen in a third wavelength band detected by the first light sensor and infrared light rays in the ambient light penetrating through the display screen;

C₁the intensities of visible light rays emitted by the display screen and visible light rays and infrared light rays in ambient light penetrating through the display screen are detected by the first light ray sensor;

R₂the intensity of the visible light emitted by the display screen in the first wave band and the intensity of the infrared light in the environment light penetrating through the display screen are detected by the second light sensor;

G₂the intensity of the visible light rays emitted by the display screen in the second wave band and detected by the second light sensor and the intensity of the infrared light rays in the ambient light penetrating through the display screen;

B₂the intensity of the visible light emitted by the display screen in the third wave band and the intensity of the infrared light in the environment light penetrating through the display screen are detected by the second light sensor;

C₂the intensity of the visible light emitted by the display screen and the intensity of the infrared light in the environment light penetrating through the display screen are detected by the second light sensor.

13. A control method of an electronic device, applied to the electronic device according to any one of claims 6 to 12, the control method of the electronic device comprising:

14. The method for controlling the electronic device according to claim 13, wherein controlling the electronic device according to the ambient light mid-infrared light ratio comprises: