CN111337124A - Terminal device and ambient light detection method - Google Patents
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- 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
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Abstract
The disclosure relates to a terminal device and an ambient light detection method, and belongs to the technical field of ambient light detection. By adopting the terminal equipment provided by the disclosure, the ambient light detection accuracy is improved on the basis of realizing a full-screen, and the user experience is optimized. The terminal device includes: the display device comprises a display component, a light intensity detection component, a first polarization component and a second polarization component. The light intensity detection assembly is positioned below the display assembly and comprises a first light sensor and a second light sensor. The first polarization component is located the display module top, and the second polarization component is located between display module and the light intensity detection subassembly, corresponds the setting of second light sensor to a light that is used for sheltering from and passes first polarization component. The first light sensor is used for receiving light rays passing through the first polarization assembly, and the second light sensor is used for receiving light rays emitted by the display assembly and passing through the second polarization assembly.
Description
Technical Field
The present disclosure relates to the field of ambient light detection technologies, and in particular, to a terminal device and an ambient light detection method.
Background
Ambient light sensors are an important component in terminal devices. The brightness of the environment where the terminal device is located is detected through the ambient light sensor, and then the brightness of the display assembly is regulated and controlled based on the ambient light brightness. Therefore, the accurate acquisition of the ambient light brightness is the basis for realizing the brightness adjustment of the display assembly of the terminal equipment. However, the terminal device provided in the related art has a drawback of large ambient light detection deviation, with room for further improvement.
Disclosure of Invention
The disclosure provides a terminal device and an ambient light detection method to improve accuracy of ambient light intensity detection.
In a first aspect, an embodiment of the present disclosure provides a terminal device, where the terminal device includes:
a display component;
the light intensity detection assembly is positioned below the display assembly and comprises a first light sensor and a second light sensor;
a first polarizing component located above the display component, an
The second polarization component is positioned between the display component and the light intensity detection component, is arranged corresponding to the second light sensor, and is used for blocking the light rays passing through the first polarization component;
the first light sensor is used for receiving light rays passing through the first polarization component, and the second light sensor is used for receiving light rays emitted by the display component and passing through the second polarization component.
In one embodiment, the first polarization component comprises: a first polarizer and a first retarder, the first retarder being located between the first polarizer and the display assembly;
the second polarization component includes: a second polarizer and a second retarder, the second retarder being positioned between the second polarizer and the display assembly;
the polarization directions of the first polarizer and the second polarizer are parallel; the first retarder and the second retarder are quarter-wave plates.
In one embodiment, a sum of thicknesses of the first and second retarders is configured to: and light with the wavelength of more than 700nm passes through the first polarizing component and the second retarder to form linearly polarized light, and the polarization direction of the linearly polarized light is orthogonal to the second polarizing plate.
In one embodiment, the thickness of the first retarder is configured to: linearly polarized light with the wavelength larger than 700nm passes through the first retarder to form circularly polarized light;
the thickness of the second retarder is configured to: and the circularly polarized light passes through the second retarder to form linearly polarized light with the polarization direction orthogonal to that of the second polarizer.
In one embodiment, the second polarizing component further comprises a light-transmissive support between the second retarder and the display component for supporting the display component;
the refractive index of the light-transmissive support is configured to: and light with the wavelength of more than 700nm passes through the first polarizing component and the second retarder to form linearly polarized light, and the polarization direction of the linearly polarized light is orthogonal to the second polarizing plate.
In one embodiment, the terminal device further includes an absorption member disposed corresponding to the second optical sensor, and the absorption member is configured to absorb light having a wavelength greater than 700 nm.
In one embodiment, the absorbing member is associated with the second polarizing component.
In one embodiment, the absorbing member is attached to the second retardation plate and/or the second polarizing plate.
In one embodiment, the distance from the first light sensor to the second light sensor is less than or equal to a set threshold.
In a second aspect, an embodiment of the present disclosure provides an ambient light detection method, where the method is applied to the terminal device provided in the first aspect, and the method includes:
acquiring first brightness through a first light sensor;
acquiring second brightness through a second light sensor;
and acquiring the ambient light brightness according to the difference value of the first brightness and the second brightness.
The terminal device and the ambient light detection method provided by the disclosure have at least the following beneficial effects:
and blocking the light passing through the first polarization component by the second polarization component, so that the first light sensor receives the light passing through the first polarization component. That is, the light received by the first light sensor includes: ambient light outside the terminal device, and display assembly light leakage. And the second light sensor receives the light emitted by the display component and passing through the second polarization component. In this way, the accurate ambient light level is obtained by the difference between the light intensity detected by the first light sensor and the light intensity detected by the second light sensor. The terminal equipment provided by the embodiment of the disclosure improves the accuracy of the detection of the ambient light brightness, realizes the accurate control of the terminal equipment on the brightness of the display assembly, and optimizes the user experience.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a terminal device shown according to an exemplary embodiment;
fig. 2 is a schematic structural diagram of a terminal device shown according to another exemplary embodiment;
fig. 3 is a schematic structural diagram of a terminal device shown according to another exemplary embodiment;
fig. 4 is a schematic structural diagram of a terminal device shown according to another exemplary embodiment;
FIG. 5 is a flow diagram illustrating an ambient light detection method according to an exemplary embodiment;
fig. 6 is a block diagram of a terminal device shown according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this disclosure do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and claims of this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.
In the related art, an ambient light sensor is used to detect ambient light outside the terminal device. However, in addition to ambient light, the ambient light sensor may also receive other light, such as display assembly light leakage, and display assembly light reflected back into the interior of the terminal device by the display assembly cover plate. Therefore, the ambient light sensor has a large detection error, and the terminal device is difficult to adjust the brightness based on accurate ambient light, so that the user experience is affected.
Based on the above situation, the embodiments of the present disclosure provide a terminal device and an ambient light detection method. The terminal equipment can be selected from a mobile phone, a tablet personal computer, vehicle-mounted equipment or medical equipment.
Fig. 1 is a schematic structural diagram of a terminal device according to an exemplary embodiment. As shown in fig. 1, a terminal device provided in an embodiment of the present disclosure includes: a display module 100, a light intensity detecting module 200, a first polarizing module 310, and a second polarizing module 320.
The display module 100 is an Organic Light-Emitting Diode (OLED) display module. Optionally, the display module 100 is a transparent OLED screen, and at this time, a light hole matched with the light intensity detection module 200 does not need to be formed in the display module 100, so that the display area of the display module 100 is increased, and the display effect is optimized.
The light intensity detecting member 200 is positioned below the display member 100. Here, the lower side of the display module 100 refers to a side of the display module 100 facing the inside of the terminal device. The light intensity detecting assembly 200 includes a first light sensor 210 and a second light sensor 220. The first light sensor 210 and the second light sensor 220 have a photoelectric conversion function for receiving a light signal and outputting an electrical signal representing the intensity of the light signal according to the received light signal.
The first polarization member 310 is disposed above the display member 100. The upper side of the display module 100 refers to a side of the display module 100 facing the outside of the terminal device. Optionally, the first polarization member 310 is connected to the upper surface of the display member 100 by an optical adhesive (the connection relationship between adjacent members is not shown in the drawing).
The second polarization member 320 is disposed under the display member 100. The second polarization member 320 is positioned between the display member 100 and the second light sensor 220 and is disposed corresponding to the second light sensor 220.
The arrangement of the second polarization component 320 corresponding to the second light sensor 220 means that: the projection of the second polarization component 320 in a direction perpendicular to the light receiving surface of the second light sensor 220 has an overlapping portion with the light receiving surface of the second light sensor 220. Preferably, the projected light receiving face of the second polarization component 320 contains the second light sensor 220. Optionally, the second polarization member 320 is attached to the lower surface of the display member 100 by an optical adhesive.
The second polarization component 320 is used to block light passing through the first polarization component 310. In other words, the second light sensor 220 disposed corresponding to the second polarization member 320 does not receive the light passing through the first polarization member 310.
In such a case, the first light sensor 210 is used to receive light passing through the first polarization component 310. That is, the light received by the first light sensor 210 includes: ambient light outside the terminal device, and light leakage from the display assembly 100. The second light sensor 220 is used for receiving the light emitted by the display assembly 100 and passing through the second polarization assembly 320, but cannot receive the ambient light passing through the first polarization assembly 310. Based on this, the ambient light level is obtained from the difference between the light intensity detected by the first light sensor 210 and the light intensity detected by the second light sensor 220.
The terminal device provided by the embodiment of the present disclosure improves the accuracy of ambient light brightness detection through the light intensity detection component 200, the first polarization component 310, and the second polarization component 320, thereby realizing accurate control of the terminal device on the brightness of the display component 100, and optimizing user experience.
Fig. 2 is a schematic structural diagram of a terminal device shown according to another exemplary embodiment. In one embodiment, as shown in FIG. 2, the first polarization component 310 includes: a first polarizer 311 and a first retarder 312, the first retarder 312 being positioned between the first polarizer 311 and the display assembly 100. The second polarization member 320 includes: a second polarizer 321 and a second retarder 322, the second retarder 322 being located between the second polarizer 321 and the display assembly 100. The polarization directions of the first polarizer 311 and the second polarizer 321 are parallel, and the first retarder 312 and the second retarder 322 are quarter-wave plates.
Referring to fig. 2, the first polarizer 311 is used to convert light vibrating in different directions into a first linearly polarized light 410 vibrating in a single direction.
The first linearly polarized light 410 is decomposed into ordinary light (o light) and extraordinary light (e light) having a vertical vibration direction when passing through the first retardation plate 312. Also, the second retarder 312 is a quarter-wave plate, so that the ordinary light and the extraordinary light decomposed while passing through the first retarder 312 have a phase difference of 90 °. At this time, the first linearly polarized light 410 is converted into circularly polarized light 420 by the first retardation plate 312.
When the circularly polarized light 420 passes through the second retardation plate 322, the ordinary light and the extraordinary light are again 90 ° out of phase. Accordingly, the circularly polarized light 420 is converted into the second linearly polarized light 430 by the second retardation plate 322. And, the polarization direction of the second linearly polarized light 430 is orthogonal to the polarization direction of the first linearly polarized light 410. That is, the polarization direction of the second linearly polarized light 430 is orthogonal to the polarization direction of the first polarizing plate 311.
And, the polarization direction of the second polarizing plate 321 is parallel to the polarization direction of the first polarizing plate 311, and at this time, the second linearly polarized light 430 cannot penetrate the second polarizing plate 321. That is, the second light sensor 220 is prevented from receiving the light transmitted through the first polarization component 310. Since the leakage light 440 emitted from the display assembly 100 is unpolarized light, the leakage light 440 can pass through the second polarization assembly 320 and be irradiated on the second light sensor 220.
In this way, ambient light incident from outside the terminal device cannot be projected on the second light sensor 220, enabling the second light sensor 220 to detect the intensity of the leakage light 440 of the display assembly 100.
The inventors found that it is difficult for the conventional retardation plate to convert linearly polarized light having a wavelength of more than 700nm into circularly polarized light, typically into elliptically polarized light. Further, the light passing through the first polarization member 310 and the second retardation plate 322 is also circularly polarized light. Accordingly, a portion of the ambient light is caused to pass through the second polarizer 321 and be received by the second light sensor 220. Therefore, in a warm light environment, the conventional delay plate still has detection errors, and monitoring accuracy is difficult to guarantee.
Based on this problem, the embodiments of the present disclosure propose the following solutions:
in one embodiment, the sum of the thicknesses of the first retarder 312 and the second retarder 322 is configured to: light with a wavelength of more than 700nm passes through the first polarizing component 310 and the second retarder 322 to form linearly polarized light, and the polarization direction of the linearly polarized light is orthogonal to the second polarizer 321.
For linearly polarized light, the optical path difference between the ordinary light and the extraordinary light after passing through one retarder is as follows:
Δj＝2π(no-ne)d/λ
wherein, Δ j is the optical path difference between the ordinary light (o light) and the extraordinary light (e light);
nothe refractive index of the retarder to ordinary light; n iseIs the refractive index of the retarder to very light;
λ is the wavelength of the incident light.
Under the condition that the materials of the first retardation plate 312 and the second retardation plate 322 are fixed, the optical path difference of linearly polarized light with the wavelength of more than 700nm after entering the first retardation plate 312 and the second retardation plate 322 can be effectively regulated by regulating the sum of the thicknesses of the first retardation plate 312 and the second retardation plate 322, so that the incident light is converted into linearly polarized light with the polarization direction orthogonal to the second polarizing plate 321 as far as possible. In this way, the light passing through the second polarizer 312 is reduced, and the detection accuracy of the second light sensor 220 for the light leakage of the display assembly 100 is guaranteed.
Further, in the case where the first retarder 312 and the second retarder 322 are both quarter-wave plates, the thickness of the first retarder 312 is configured such that linearly polarized light having a wavelength of more than 700nm passes through the first retarder 312 to form circularly polarized light, and the thickness of the second retarder 322 is configured such that: the circularly polarized light passes through the second retarder to form linearly polarized light having a polarization direction orthogonal to the second polarizing plate 321.
In one embodiment, fig. 3 is a block diagram of a terminal device shown in accordance with another exemplary embodiment. As shown in fig. 3, the second polarization member 320 further includes a light-transmissive support 330, and the light-transmissive support 330 is located between the second retarder 220 and the display member 100 for supporting the display member 100.
Wherein the refractive index of the light-transmissive support 330 is configured to: light with a wavelength of more than 700nm passes through the first polarizing component 310 and the second retarder 322 to form linearly polarized light, and the polarization direction of the linearly polarized light is orthogonal to the second polarizer 321.
In this embodiment, the light passing through the light-transmissive support 330 is circularly polarized light (including extraordinary light and ordinary light). At this time, n is made n by adjusting the refractive index of the light-transmitting support 330 without changing the thicknesses of the first retardation plate 312 and the second retardation plate 322oAnd neThe difference between (1) and (3) is increased to make up for the simple passing through of the first retardation plate 312 and the second retardationThe path difference between the extraordinary and ordinary rays behind the retarder 322. Further, incident light having a wavelength of more than 700nm is converted into linearly polarized light having a polarization direction orthogonal to the second polarizing plate 321 as much as possible. Accordingly, the blocking effect of the first and second polarization members 310 and 320 with respect to light having a wavelength of 700nm or more is optimized.
In one embodiment, fig. 4 is a block diagram of a terminal device shown in accordance with another exemplary embodiment. As shown in fig. 4, the terminal device further includes an absorption member 500 disposed corresponding to the second light sensor 220, the absorption member 500 for absorbing light having a wavelength of more than 700 nm.
Since light having a wavelength greater than 700nm is close to infrared light, the display assembly 100 emits light having a wavelength generally lower than 700 nm. In other words, in the present embodiment, the light having a wavelength of more than 700nm is substantially the ambient light outside the terminal device. In this way, the second sensor 220 is fundamentally prevented from receiving ambient light having a wavelength greater than 700nm, optimizing ambient light detection accuracy.
Optionally, as shown in FIG. 4, the absorbent member 500 is attached to the second polarizing component 320. For example, the absorbent member 500 is attached to the second retardation plate 322, and/or the absorbent member 500 is attached to the second polarizing plate 321 (not shown in fig. 4). For example, the absorbing member 500 has a sheet-like structure, and is coupled to the second retardation plate 322 and/or the second polarizing plate 321 by an optical adhesive.
Alternatively, the absorption member 500 is integrally formed with the second retardation plate 322 or the second polarizing plate 321. For example, the second retardation plate 322 or the second polarizing plate 321 is made of a material capable of absorbing light having a wavelength of more than 700 nm.
Further, in one embodiment, the distance from the first light sensor 210 to the second light sensor 220 is less than or equal to a set threshold. Optionally, the first light sensor 210 and the second light sensor 220 are disposed adjacently. Also, the distance from the first light sensor 210 to the second light sensor 220 is less than or equal to a set threshold.
In this way, the degree of overlap of the detection range of the first photosensor 210 and the detection range of the second photosensor 220 is improved. The first light sensor 210 and the second light sensor 220 can detect the light leakage of the same part of the display assembly 100 as much as possible, and the detection accuracy of the light intensity of the ambient light is improved.
Based on the terminal device, the embodiment of the disclosure further provides an ambient light detection method. FIG. 5 is a flow chart illustrating a method of ambient light detection according to an exemplary embodiment. As shown in fig. 5, the ambient light detection method is applicable to the terminal device provided in the first aspect, and specifically includes:
And step 503, obtaining the ambient light brightness according to the difference value of the first brightness and the second brightness.
The first brightness acquired by the first light sensor represents the brightness of ambient light and the light leakage of the display assembly; and the second brightness acquired by the second light sensor represents the brightness of light leakage of the display assembly. In this way, the difference value between the first brightness and the second brightness is the brightness of the ambient light, and the ambient light detection accuracy is further optimized.
In one example, the ambient light level is a difference between the first level and a set multiple of the second level. Because the light that the second light sensor received is the light behind the display screen light leak through second polarization subassembly, second polarization subassembly has certain degree to the display screen light leak and filters the effect, therefore the light intensity that the second light sensor detected is less than actual display screen light leak. Furthermore, in this example, the filtering effect of the second polarization component is compensated by a set multiple. Wherein the set multiple can be obtained according to a preliminary test.
In addition, the embodiment of the disclosure provides a terminal device. Fig. 6 is a block diagram of a terminal device provided in accordance with an example embodiment. As shown in fig. 6, the terminal device 600 may include one or more of the following components in addition to the structure shown in fig. 1: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an interface for input/output (I/O) 612, a sensor component 614, a communication component 616, and an image capture component.
The processing component 602 generally refers to the overall operation of the terminal device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.
The memory 604 is configured to store various types of data to support operation at the terminal device 600. Examples of such data include instructions for any application or method operating on the terminal device 600, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 606 provides power to the various components of the terminal device 600. The power components 606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal device 600.
The multimedia component 608 comprises a display screen providing an output interface between the terminal device 600 and the target object. In some embodiments, the display screen includes a display component and a touch panel, in this way, the display screen may be implemented as a touch screen to receive input signals from a target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive an external audio signal when the terminal device 600 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.
The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.
The sensor component 614 includes one or more sensors for providing various aspects of status assessment for the terminal device 600. For example, the sensor component 614 may detect an open/closed state of the terminal device 600, relative positioning of components such as a display and a keypad of the terminal device 600, a change in position of the terminal device 600 or one of the components, presence or absence of a target object in contact with the terminal device 600, orientation or acceleration/deceleration of the terminal device 600, and a change in temperature of the terminal device 600. As another example, the sensor assembly 614 further includes a first light sensor and a second light sensor disposed below the OLED display screen.
The communication component 616 is configured to facilitate communications between the terminal device 600 and other devices in a wired or wireless manner. The terminal device 600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the terminal device 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.
In an exemplary embodiment, the disclosed embodiment also provides a readable storage medium, and the readable storage medium stores executable instructions. The executable instructions can be executed by a processor of the terminal device to realize the steps of the provided ambient light detection method. The readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A terminal device, characterized in that the terminal device comprises:
a display component;
the light intensity detection assembly is positioned below the display assembly and comprises a first light sensor and a second light sensor;
a first polarizing component located above the display component, an
The second polarization component is positioned between the display component and the light intensity detection component, is arranged corresponding to the second light sensor, and is used for blocking the light rays passing through the first polarization component;
the first light sensor is used for receiving light rays passing through the first polarization component, and the second light sensor is used for receiving light rays emitted by the display component and passing through the second polarization component.
2. The terminal device of claim 1, wherein the first polarization component comprises: a first polarizer and a first retarder, the first retarder being located between the first polarizer and the display assembly;
the second polarization component includes: a second polarizer and a second retarder, the second retarder being positioned between the second polarizer and the display assembly;
the polarization directions of the first polarizer and the second polarizer are parallel; the first retarder and the second retarder are quarter-wave plates.
3. The terminal device of claim 2, wherein a sum of thicknesses of the first and second retarders is configured to:
and light with the wavelength of more than 700nm passes through the first polarizing component and the second retarder to form linearly polarized light, and the polarization direction of the linearly polarized light is orthogonal to the second polarizing plate.
4. The terminal device of claim 2, wherein the thickness of the first retarder is configured to: linearly polarized light with the wavelength larger than 700nm passes through the first retarder to form circularly polarized light;
the thickness of the second retarder is configured to: and the circularly polarized light passes through the second retarder to form linearly polarized light with the polarization direction orthogonal to that of the second polarizer.
5. The terminal device of claim 2, wherein the second polarization component further comprises a light-transmissive support positioned between the second retarder and the display component for supporting the display component;
the refractive index of the light-transmissive support is configured to: and light with the wavelength of more than 700nm passes through the first polarizing component and the second retarder to form linearly polarized light, and the polarization direction of the linearly polarized light is orthogonal to the second polarizing plate.
6. The terminal device according to claim 2, further comprising an absorber disposed corresponding to the second optical sensor, the absorber configured to absorb light having a wavelength greater than 700nm or more.
7. A terminal device according to claim 6, wherein the absorbing member is associated with the second polarising element.
8. The terminal device according to claim 7, wherein the absorption member is attached to the second retardation plate and/or the second polarizing plate.
9. The terminal device of claim 1, wherein a distance from the first light sensor to the second light sensor is less than or equal to a set threshold.
10. An ambient light detection method, the method being applied to the terminal device of any one of claims 1 to 9, the method comprising:
acquiring first brightness through a first light sensor;
acquiring second brightness through a second light sensor;
and acquiring the ambient light brightness according to the difference value of the first brightness and the second brightness.
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