Electronic device, imaging method, and readable storage medium

Abstract

The application discloses an electronic device, an imaging method and a readable storage medium, and belongs to the technical field of electronic devices. The electronic device comprises a display screen and an infrared camera arranged on one side of the display screen. The display screen comprises a graphene oxide liquid crystal layer, the graphene oxide liquid crystal layer is used for emitting infrared light in the case of receiving photons, and the position of graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer changes with the change of the voltage of the graphene oxide liquid crystal layer. The infrared camera is used for receiving reflected light of the infrared light and imaging based on the reflected light.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, specifically relating to an electronic device, an imaging method, and a readable storage medium. Background Technology

[0002] In low-light conditions, traditional facial recognition systems may fail to accurately identify faces. Therefore, adding supplemental lighting to the screen can enhance nighttime facial recognition performance. However, while this can improve visibility in low-light environments, it can also cause eye strain and disrupt sleep.

[0003] To solve the above problems, a single infrared device, such as an active infrared light source, can be set up to illuminate the face. The infrared light reflected back from the face is then captured by an infrared camera for image formation and face recognition.

[0004] However, due to limitations in layout and current, the field of view (FOV) of a single infrared device is small and the illumination distance is short, which means that only a single feature point of the face can be collected during face recognition, resulting in poor accuracy and security of face recognition. Summary of the Invention

[0005] The purpose of this application is to provide an electronic device, an imaging method, and a readable storage medium that can improve the accuracy and security of face recognition.

[0006] In a first aspect, embodiments of this application provide an electronic device, which includes: a display screen and an infrared camera disposed on one side of the display screen; the display screen includes a graphene oxide liquid crystal layer, which is used to emit infrared light when photons are received, and the position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer changes with the voltage of the graphene oxide liquid crystal layer; the infrared camera is used to receive reflected infrared light and to perform imaging based on the reflected light.

[0007] Secondly, embodiments of this application provide an imaging method applied to an electronic device as described in the first aspect. The method includes: controlling the display screen of the electronic device to turn on, wherein, when the display screen is on, the graphene oxide liquid crystal layer in the display screen can emit infrared light; receiving the reflected light of the infrared light emitted by the graphene oxide liquid crystal layer through an infrared camera of the electronic device, and performing imaging based on the reflected light.

[0008] Thirdly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implementing the steps of the method described in the second aspect.

[0009] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the second aspect.

[0010] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the second aspect.

[0011] In a sixth aspect, embodiments of this application provide a computer program / program product stored in a storage medium, which is executed by at least one processor to implement the method as described in the second aspect.

[0012] In the electronic device provided in this application embodiment, the electronic device may include a display screen and an infrared camera disposed on one side of the display screen; the display screen includes a graphene oxide liquid crystal layer, which is used to emit infrared light upon receiving photons, and the positions of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer change with the voltage of the graphene oxide liquid crystal layer; the infrared camera is used to receive the reflected light of the infrared light and to form an image based on the reflected light. Through this electronic device, infrared light can be emitted by the graphene oxide liquid crystal layer upon receiving photons, and the reflected light of the infrared light can be received by the infrared camera, and then an image can be formed based on the reflected light. Compared with a single infrared device, emitting infrared light through the graphene oxide liquid crystal layer can increase the field of view (FOV) and illumination distance, thereby allowing more facial feature points to be collected during face recognition, thus improving the accuracy and security of face recognition. Attached Figure Description

[0013] Figure 1 This is one of the structural schematic diagrams of the electronic device provided in the embodiments of this application;

[0014] Figure 2 This is a second schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0015] Figure 3 This is one of the schematic diagrams showing the positions of graphene oxide liquid crystal molecules in the electronic device provided in this application embodiment;

[0016] Figure 4This is the second schematic diagram showing the position of graphene oxide liquid crystal molecules in the electronic device provided in this application embodiment;

[0017] Figure 5 This is a schematic diagram showing the positional relationship between graphene oxide liquid crystal molecules and at least two pixels in an electronic device provided in this application embodiment;

[0018] Figure 6 This is a circuit diagram of screen control in an electronic device provided in the embodiments of this application;

[0019] Figure 7 This is the third schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0020] Figure 8 This is a flowchart of the imaging method provided in the embodiments of this application;

[0021] Figure 9 This is a schematic diagram of the electronic device provided in the embodiments of this application;

[0022] Figure 10 This is a hardware schematic diagram of the electronic device provided in the embodiments of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0026] The terms "at least one," "at least one of," etc., used in the specification and claims of this application refer to any one, any two, or a combination of two or more of the included items. For example, at least one of a, b, and c can mean: "a," "b," "c," "a and b," "a and c," "b and c," and "a, b, and c," where a, b, and c can be single or multiple. Similarly, "at least two" refers to two or more items, and its meaning is similar to that of "at least one."

[0027] The electronic device, imaging method, and readable storage medium provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0028] Nighttime screen-illuminated facial recognition is a technology that utilizes the screen's illumination function to assist in facial recognition. In low-light conditions, traditional facial recognition systems may fail to accurately identify faces. Therefore, displaying supplementary lighting on the screen provides an additional light source to enhance nighttime facial recognition performance.

[0029] While nighttime screen illumination can improve visibility in low-light conditions to some extent, it also has some potential drawbacks. For example, it may cause eye fatigue and discomfort, and affect users' sleep quality and rhythm. To avoid these problems, active near-infrared (ANI) face recognition can be used to provide high-quality facial images unaffected by ambient light. ANI uses a single infrared device to illuminate the face, and an infrared camera receives the reflected infrared light to create an image for face recognition.

[0030] However, due to the use of a single infrared device, the field of view (FOV) is small and the illumination distance is short due to limitations in layout and current. This means that only a single feature point of the face can be captured during face recognition, resulting in poor accuracy and security. To address these issues, embodiments of this application provide an electronic device, an imaging method, and a readable storage medium. The electronic device provided in this application can be applied to nighttime face recognition scenarios.

[0031] In the electronic device provided in this application embodiment, the electronic device may include a display screen and an infrared camera disposed on one side of the display screen; the display screen includes a graphene oxide liquid crystal layer, which is used to emit infrared light upon receiving photons, and the positions of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer change with the voltage of the graphene oxide liquid crystal layer; the infrared camera is used to receive the reflected light of the infrared light and to form an image based on the reflected light. Through this electronic device, infrared light can be emitted by the graphene oxide liquid crystal layer upon receiving photons, and the reflected light of the infrared light can be received by the infrared camera, and then an image can be formed based on the reflected light. Compared with a single infrared device, emitting infrared light through the graphene oxide liquid crystal layer can increase the field of view (FOV) and illumination distance, thereby allowing more facial feature points to be collected during face recognition, thus improving the accuracy and security of face recognition.

[0032] Furthermore, the electronic device provided in this application embodiment can achieve infrared face recognition without relying on infrared emitting lights, thereby saving infrared emitting lights, and the screen light is not perceptible to the human eye when unlocking at night, increasing privacy protection and eye protection.

[0033] It should be noted that the terms "up," "down," "left," and "right" in the embodiments of this application are all illustrative of the screen facing the user when the electronic device is placed horizontally.

[0034] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown. Figure 1 As shown, the electronic device 10 provided in this application embodiment may include: a display screen 11 and an infrared camera 12 disposed on one side of the display screen 11.

[0035] The aforementioned display screen 11 includes a graphene oxide liquid crystal layer 13, which is used to emit infrared light when photons are received. The position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer 13 changes with the voltage of the graphene oxide liquid crystal layer 13. The aforementioned infrared camera 12 is used to receive the reflected light of the infrared light and to perform imaging based on the reflected light.

[0036] Optionally, in this embodiment of the application, the display screen 11 can be a rigid screen or a flexible screen.

[0037] For example, taking the above-mentioned display screen 11 as a flexible screen, the display screen 11 can be a foldable screen or a rollable screen, etc.

[0038] Optionally, in this embodiment of the application, the display screen 11 can be a light-emitting diode (LED) screen, an organic light-emitting diode (OLED) screen, or a liquid crystal display (LCD) screen, etc.

[0039] Optionally, in this embodiment of the application, the infrared camera 12 can be a camera capable of receiving near-infrared light.

[0040] Optionally, in this embodiment of the application, the infrared camera 12 may include components such as a lens and an infrared light receiver.

[0041] Optionally, in this embodiment, the working principle of the infrared camera 12 mainly relies on the application of infrared light, which is an invisible light wave with a longer wavelength than visible light and therefore higher energy. The infrared camera 12 can convert infrared light into electrical signals through components such as a lens and an infrared light receiver, and then, through digital signal processing and image processing algorithms, ultimately form a visualized image.

[0042] Specifically, when infrared light shines on the surface of an object, some of the light is absorbed by the object, while some of the light is diffusely reflected. The reflected infrared light can be captured by the infrared light receiver of the infrared camera 12. Then, the infrared light receiver converts the reflected infrared light into an electrical signal. The infrared camera 12 can then process the received electrical signal through an image processor, including amplification, filtering, and enhancement, and finally convert it into a visualized image.

[0043] It should be noted that, Figure 1 The above-mentioned infrared camera 12 and the above-mentioned display screen 11 are only shown as an illustration. In actual implementation, the infrared camera 12 can also be set at any possible position, such as below the display screen. This application embodiment does not limit this.

[0044] In the embodiments of this application, the above-mentioned graphene oxide liquid crystal molecule is a precursor of the combination of liquid crystal and graphene.

[0045] It's important to note that graphene is an almost completely transparent material. It's a two-dimensional nanomaterial with a hexagonal honeycomb lattice structure composed of a single layer of carbon atoms, possessing excellent optical properties. Graphene can photoemit infrared radiation because its surface contains many photoelectronic states. When external light excites these photoelectronic states, electron transitions occur, generating energetic vibrations. This causes the atoms and molecules on the graphene surface to vibrate and collide continuously, ultimately producing infrared radiation.

[0046] Specifically, when photons strike the surface of graphene, they are absorbed and excited to produce electrons. These excited electrons begin to move freely on the graphene surface, forming a two-dimensional electron gas. The interaction of these freely moving electrons generates surface plasmons, which can propagate on the graphene surface, ultimately causing infrared radiation to be emitted from the graphene surface.

[0047] However, to achieve the goals of eye protection and increased infrared light emission area, graphene needs to be able to move within the aforementioned graphene oxide liquid crystal layer 13, thus requiring the graphene to be liquid crystallized. However, simply creating a mixture of graphene and liquid crystal is insufficient; graphene molecules and liquid crystal molecules also need to be bound together. Therefore, graphene oxide liquid crystal molecules are used in the aforementioned graphene oxide liquid crystal layer 13. Their extremely high aspect ratio allows their dispersion to form liquid crystals even at very low concentrations. The liquid crystal molecules only serve to move the graphene molecules and do not participate in actual infrared light emission. Graphene molecules themselves are easily excited and emit infrared light. The wavelength of graphene far-infrared light is approximately between 5-20 micrometers, and its principle is photogenerated carrier radiation. Photoexcitation causes electrons within the material to transition to an allowed excited state. When these electrons return to their thermal equilibrium state, excess energy is released through luminescence and non-radiative processes. The energy of the photoluminescent radiation is related to the energy level difference between the two electronic states, which involves the transition between the excited and equilibrium states.

[0048] Optionally, in this embodiment of the application, the position of the graphene oxide liquid crystal molecules changes with the voltage of the graphene oxide liquid crystal layer 13, which may include: the position of the graphene oxide liquid crystal molecules changes with the energization state of the graphene oxide liquid crystal layer 13.

[0049] It is understandable that when the energizing state of the graphene oxide liquid crystal layer 13 changes, the voltage of the graphene oxide liquid crystal layer 13 will inevitably change.

[0050] Optionally, in the embodiments of this application, the number of graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer 13 can be determined according to the actual use; as the concentration of graphene oxide liquid crystal molecules decreases, the reflection wavelength of the liquid crystal photonic crystal will redshift, so the emitted infrared band can be adjusted by changing the concentration of graphene oxide liquid crystal molecules.

[0051] Optionally, in the embodiments of this application, combined with Figure 1 ,like Figure 2 As shown, the display screen 11 may also include a pixel layer 14, which includes at least two pixels for emitting light.

[0052] The pixel layer 14 is parallel to the graphene oxide liquid crystal layer 13 and is disposed on one side of the graphene oxide liquid crystal layer 13.

[0053] Optionally, in this embodiment, the pixel layer 14 may be disposed below the graphene oxide liquid crystal layer 13 (i.e., on the side closer to the motherboard of the electronic device 10).

[0054] Optionally, in this embodiment, the pixel type of the at least two pixels is related to the display screen 11.

[0055] For example, taking the above-mentioned display screen 11 as an OLED screen, the above-mentioned at least two pixels can both be RGB pixels.

[0056] In this embodiment of the application, the light emitted by the at least two pixels is visible light, not infrared light.

[0057] In this embodiment, since the pixel layer, which includes at least two pixels for emitting light, can be parallel to the graphene oxide liquid crystal layer and disposed on one side of the graphene oxide liquid crystal layer, when face recognition is required, the light emitted by the at least two pixels can excite the graphene oxide liquid crystal layer to emit infrared light, thereby enabling photoluminescent infrared emission and saving power consumption of the device emitting infrared light.

[0058] Optionally, in the embodiments of this application, combined with Figure 2 ,like Figure 3 As shown, when the graphene oxide liquid crystal layer 13 is not energized, the graphene oxide liquid crystal molecules 15 in the graphene oxide liquid crystal layer 13 are arranged randomly; or, combined with Figure 2 ,like Figure 4 As shown, when the graphene oxide liquid crystal layer 13 is energized, the position of the graphene oxide liquid crystal molecule 15 in the graphene oxide liquid crystal layer 13 does not overlap with the position of the at least two pixels 16 in the pixel layer 14 in a first direction, which is a direction perpendicular to the display screen 11.

[0059] Optionally, in the embodiments of this application, the position of the graphene oxide liquid crystal molecule 15 in the graphene oxide liquid crystal layer 13 can be changed by whether or not an electric potential is applied to both ends of the graphene oxide liquid crystal layer 13 (i.e., whether or not an electric current is applied).

[0060] Optionally, in the embodiments of this application, the disordered arrangement can be a random arrangement; it can be understood that the disordered graphene oxide liquid crystal molecules 15 can be randomly dispersed in the graphene oxide liquid crystal layer 13, thereby increasing the infrared light emission area.

[0061] For example, such as Figure 3As shown, the graphene oxide liquid crystal molecules 15 are randomly arranged in the graphene oxide liquid crystal layer 13, allowing the graphene oxide liquid crystal molecules 15 to cover the entire graphene oxide liquid crystal layer 13 as much as possible. This makes the entire display screen 11 an infrared light emitting surface due to the graphene oxide liquid crystal layer 13, thereby increasing the emitting area of ​​the graphene oxide liquid crystal layer 13. This results in richer feature points reflected back from a face by the surface light source, making it easier to form facial features compared to a single infrared device, and exponentially enhancing anti-hacking capabilities.

[0062] Optionally, in this embodiment of the application, the position of the graphene oxide liquid crystal molecule 15 in the graphene oxide liquid crystal layer 13 does not overlap with the position of the at least two pixels 16 in the pixel layer 14 in the first direction. This can be understood as: the graphene oxide liquid crystal molecule 15 is distributed between the at least two pixels 16 in the second direction; wherein, the second direction is a direction parallel to the display screen 11.

[0063] For example, such as Figure 5 As shown, from a top-down view, graphene oxide liquid crystal molecules are arranged orderly between the pixels in the pixel layer. In this way, the graphene oxide liquid crystal molecules will not emit infrared light when excited by a light source, and will not affect the normal display of the screen pixels.

[0064] Optionally, in this embodiment, when the graphene oxide liquid crystal layer 13 is not powered, in the scenario of screen unlocking supplementary lighting, at least two pixels 16 emit light, the graphene oxide liquid crystal molecules 15 are randomly arranged, and emit infrared light by pixel-excited photoluminescence; when the graphene oxide liquid crystal layer 13 is powered, at least two pixels 16 also emit light, the graphene oxide liquid crystal molecules 15 are orderly arranged, fixed in the pixel gaps, and do not block the light emission of the display screen 11.

[0065] Optionally, in this embodiment, the screen control circuit in the electronic device can be supplemented with a metal-oxide-semiconductor (MOS) transistor to control the voltage of the graphene oxide liquid crystal layer 13. For example, the circuit diagram of this circuit is shown below. Figure 6 As shown, when the display screen 11 is in normal use, the pixels emit light normally, Vdata is negative voltage, VGL is positive voltage, PMOS is turned on, there is voltage across the graphene oxide liquid crystal layer 13, and the graphene oxide liquid crystal molecules 15 are arranged in an orderly manner in the pixel gaps, without emitting infrared light; when face recognition is required, Vdata is positive voltage, VGL is negative voltage, PMOS is turned off, there is no voltage across the graphene oxide liquid crystal layer 13, the graphene oxide liquid crystal molecules 15 are arranged in a disordered manner, increasing the emission area, and are excited by the light emitted by the pixels to emit infrared light.

[0066] In this embodiment, the arrangement of graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer can be changed to a disordered or ordered arrangement by altering the energizing state of the layer. Therefore, the arrangement position of the graphene oxide liquid crystal molecules in the layer can be flexibly controlled. This allows for improved accuracy of face recognition by not energizing the graphene oxide liquid crystal layer, increasing the infrared light emission area. Conversely, during normal display use, energizing the graphene oxide liquid crystal layer ensures an ordered arrangement of the graphene oxide molecules, avoiding interference with pixel illumination.

[0067] Optionally, in the embodiments of this application, combined with Figure 1 ,like Figure 7 As shown, the graphene layer 13 may also include a sodium chloride solution 17.

[0068] In this process, the graphene oxide liquid crystal molecules 15 in the graphene oxide liquid crystal layer 13 are in the sodium chloride solution 17.

[0069] Optionally, in the embodiments of this application, the sodium chloride solution 17 can also be other highly polar organic solvents. The embodiments of this application are only used to illustrate the sodium chloride solution, and are not limited in actual implementation.

[0070] It should be noted that, under normal circumstances, graphene oxide liquid crystal molecules can only exist in environments with low ionic strength or in highly polar organic solvents. Graphene oxide liquid crystal molecules are stable in saturated sodium chloride solution. Therefore, the entire graphene oxide liquid crystal layer 13 is encapsulated by transparent crystals, with saturated sodium chloride solution 17 flowing inside. Electrodes are added to this graphene oxide liquid crystal layer 13 to apply a potential.

[0071] In this embodiment, since the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer can be in a sodium chloride solution, the stability of the graphene oxide liquid crystal molecules can be improved, enabling them to remain stable.

[0072] Optionally, in the embodiments of this application, polyelectrolytes may be adsorbed on the graphene oxide liquid crystal molecules 15.

[0073] Optionally, in the embodiments of this application, the polyelectrolyte can be a polyelectrolyte with high hydration capacity.

[0074] Optionally, in the embodiments of this application, the graphene oxide adsorbed with polyelectrolytes can exist stably under extreme ionic strength.

[0075] In the electronic device provided in this application embodiment, infrared light can be emitted by a graphene oxide liquid crystal layer upon receiving photons, and the reflected light of this infrared light can be received by an infrared camera, and then an image can be formed based on the reflected light. Compared with a single infrared device, emitting infrared light through the graphene oxide liquid crystal layer can increase the field of view (FOV) and illumination distance, thereby enabling the collection of more facial feature points during face recognition, thus improving the accuracy and security of face recognition.

[0076] This application also provides an imaging method that is applied to the electronic device described in the above embodiments. Figure 8 A flowchart of the imaging method provided in an embodiment of this application is shown. Figure 8 As shown, the imaging method provided in this application embodiment may include the following steps 801 and 802.

[0077] Step 801: The electronic device controls the display screen of the electronic device to turn on.

[0078] When the display screen is lit, the graphene oxide liquid crystal layer in the display screen can emit infrared light.

[0079] Optionally, in this embodiment of the application, the display screen may further include: a pixel layer parallel to and disposed on one side of the graphene oxide liquid crystal layer, the pixel layer including at least two pixels for emitting light. Exemplarily, step 801 can be specifically implemented through step 801a as described below.

[0080] Step 801a: The electronic device controls at least two pixels to emit light.

[0081] Step 802: The electronic device receives the reflected light of the infrared light emitted by the graphene liquid crystal layer through its infrared camera, and performs imaging based on the reflected light.

[0082] In the imaging method provided in this application embodiment, the electronic device can control the display screen to turn on, causing the graphene oxide liquid crystal layer in the display screen to emit infrared light. Then, an infrared camera receives the reflected light of the infrared light and forms an image based on the reflected light. Compared with a single infrared device, emitting infrared light through the graphene oxide liquid crystal layer can increase the field of view (FOV) and illumination distance, thereby allowing more facial feature points to be collected during face recognition, which can improve the accuracy and security of face recognition.

[0083] Optionally, the imaging method provided in this application embodiment may further include the following step 803.

[0084] Step 803: The electronic device controls the energization state of the graphene oxide liquid crystal layer through the field-effect transistor in the electronic device.

[0085] Specifically, when the graphene oxide liquid crystal layer is not energized, the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are arranged randomly; or, when the graphene oxide liquid crystal layer is energized, the positions of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer do not overlap with the positions of the at least two pixels in the pixel layer in a first direction, which is a direction perpendicular to the display screen.

[0086] For other descriptions of the embodiments of this application and the technical effects that each technical feature can achieve, please refer to the relevant descriptions in the above-described electronic device embodiments. To avoid repetition, they will not be repeated here.

[0087] The above-described method embodiments, or various possible implementations of the method embodiments, can be executed individually, or, provided there are no contradictions, they can be combined with each other. The specific implementation can be determined according to actual usage requirements, and this application embodiment does not impose any restrictions on this.

[0088] like Figure 9 As shown, this application embodiment also provides an electronic device 100, including a processor 101 and a memory 102. The memory 102 stores a program or instructions that can run on the processor 101. When the program or instructions are executed by the processor 101, they implement the various steps of the imaging method embodiment described above and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0089] It should be noted that the electronic devices in the embodiments of this application include mobile electronic devices and non-mobile electronic devices.

[0090] Figure 10 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0091] like Figure 10 As shown, the electronic device 1000 includes, but is not limited to, components such as: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0092] Those skilled in the art will understand that the electronic device 1000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 10The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0093] The processor 1010 can be used to control the screen of an electronic device to turn on. When the screen is on, the graphene oxide liquid crystal layer in the screen can emit infrared light. The infrared camera of the electronic device receives the reflected light of the infrared light emitted by the graphene oxide liquid crystal layer and performs imaging based on the reflected light.

[0094] In one possible implementation, the display screen may further include a pixel layer parallel to and disposed on one side of the graphene oxide liquid crystal layer, the pixel layer including at least two pixels for emitting light. Exemplarily, the processor 1010 may specifically be used to control the emitting light of the at least two pixels.

[0095] In one possible implementation, the processor 1010 can also be used to control the power-on state of the graphene oxide liquid crystal layer via a field-effect transistor in an electronic device; wherein, when the graphene oxide liquid crystal layer is not powered, the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are arranged randomly; or, when the graphene oxide liquid crystal layer is powered, the position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer does not overlap with the position of the at least two pixels in the pixel layer in a first direction, the first direction being a direction perpendicular to the display screen.

[0096] In the electronic device provided in this application embodiment, the electronic device can control the display screen to turn on, so that the graphene oxide liquid crystal layer in the display screen emits infrared light. Then, the reflected light of the infrared light is received by an infrared camera, and an image is formed based on the reflected light. Compared with a single infrared device, emitting infrared light through the graphene oxide liquid crystal layer can increase the field of view (FOV) and illumination distance, thereby collecting more facial feature points during face recognition, which can improve the accuracy and security of face recognition.

[0097] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0098] The memory 1009 can be used to store software programs and various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1009 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0099] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.

[0100] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described imaging method embodiments and achieve the same technical effects. To avoid repetition, these will not be described again here.

[0101] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0102] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above imaging method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0103] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0104] This application provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the imaging method embodiments described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0105] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0106] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0107] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, characterized in that, include: A display screen and an infrared camera mounted on one side of the display screen; The display screen includes a graphene oxide liquid crystal layer, which is used to emit infrared light when photons are received. The position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer changes with the voltage of the graphene oxide liquid crystal layer. The graphene oxide liquid crystal molecules are precursors of a combination of liquid crystal and graphene. The display screen further includes a pixel layer, which includes at least two pixels for emitting light; when the graphene oxide liquid crystal layer is not powered, the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are arranged randomly; or, when the graphene oxide liquid crystal layer is powered, the positions of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer do not overlap with the positions of the at least two pixels in the pixel layer in a first direction, the first direction being a direction perpendicular to the display screen. The infrared camera is used to receive the reflected light of the infrared light and to form an image based on the reflected light.

2. The electronic device according to claim 1, characterized in that, The pixel layer is parallel to the graphene oxide liquid crystal layer and is disposed on one side of the graphene oxide liquid crystal layer.

3. The electronic device according to claim 1, characterized in that, The graphene oxide liquid crystal layer also includes a sodium chloride solution; The graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are in the sodium chloride solution.

4. The electronic device according to any one of claims 1 to 3, characterized in that, Polyelectrolytes are adsorbed on the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer.

5. An imaging method, applied to an electronic device as described in any one of claims 1 to 4, characterized in that, The method includes: The electronic device controls the display screen to turn on, wherein, when the display screen is on, the graphene oxide liquid crystal layer in the display screen can emit infrared light; The infrared camera of the electronic device receives the reflected infrared light emitted by the graphene oxide liquid crystal layer and performs imaging based on the reflected light.

6. The method according to claim 5, characterized in that, The display screen further includes: a pixel layer parallel to the graphene oxide liquid crystal layer and disposed on one side of the graphene oxide liquid crystal layer, the pixel layer including at least two pixels for emitting light; The control of the electronic device's display screen to turn on includes: Control the emission of at least two pixels.

7. The method according to claim 6, characterized in that, The method further includes: The energizing state of the graphene oxide liquid crystal layer is controlled by the field-effect transistor in the electronic device. Wherein, when the graphene oxide liquid crystal layer is not energized, the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are arranged randomly; or, when the graphene oxide liquid crystal layer is energized, the positions of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer do not overlap with the positions of the at least two pixels in the pixel layer in a first direction, the first direction being a direction perpendicular to the display screen.

8. An electronic device, characterized in that, It includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the imaging method as described in any one of claims 5-7.

9. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the imaging method as described in any one of claims 5-7.

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