Electronic equipment, imaging method and readable storage medium

Abstract

The invention discloses electronic equipment, an imaging method and a readable storage medium, and belongs to the technical field of electronic equipment. The electronic equipment 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 under the condition that photons are received, and the positions of graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer change along with the voltage change of the graphene oxide liquid crystal layer; and the infrared camera is used for receiving reflected light of the infrared light and imaging based on the reflected light.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to an electronic equipment, an imaging method and a readable storage medium. Background Art

[0002] In nighttime environments, due to insufficient light, traditional face recognition systems may not be able to accurately recognize faces. Therefore, fill light can be displayed on the screen to provide additional light sources to enhance the face recognition effect at night. Although the night screen fill light can improve visibility in nighttime environments to a certain extent, it can also cause eye fatigue in users and affect sleep quality.

[0003] In order to solve the above problems, a single infrared device, such as an active infrared light source, can be set up to illuminate the face, and the infrared light reflected from the face can be received by an infrared camera for imaging to perform face recognition.

[0004] However, due to the limitations of layout position and power-on current, the field of view (FOV) of a single infrared device is small and the illumination distance is short, so 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 the embodiments of the present application is to provide an electronic device, an imaging method and a readable storage medium, which can improve the accuracy and security of face recognition.

[0006] In a first aspect, an embodiment of the present application provides an electronic device, comprising: 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 to emit infrared light when receiving photons, and the positions of 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 reflected light of the infrared light and perform imaging based on the reflected light.

[0007] In a second aspect, an embodiment of the present application provides an imaging method, which is applied to an electronic device as described in the first aspect, the method comprising: controlling a display screen of the electronic device to light up, wherein when the display screen is lit up, a graphene oxide liquid crystal layer in the display screen can emit infrared light; receiving 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] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0009] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the second aspect are implemented.

[0010] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the second aspect.

[0011] In a sixth aspect, an embodiment of the present application provides a computer program / program product, which is stored in a storage medium and is executed by at least one processor to implement the method described in the second aspect.

[0012] In the electronic device provided in the embodiment of the present application, the electronic device may include a display screen and an infrared camera arranged on one side of the display screen; the display screen includes a graphene oxide liquid crystal layer, the graphene oxide liquid crystal layer is used to emit infrared light when receiving photons, and the position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer changes with the voltage change of the graphene oxide liquid crystal layer; the infrared camera is used to receive the reflected light of the infrared light and perform imaging based on the reflected light. Through this electronic device, infrared light can be emitted by the graphene oxide liquid crystal layer when receiving photons, and the reflected light of the infrared light can be received by the infrared camera, and then imaging can be performed based on the reflected light. Compared with a single infrared device, the emission of infrared light through the graphene oxide liquid crystal layer can increase the FOV and irradiation distance, so that more facial feature points can be collected when performing face recognition, which can improve the accuracy and security of face recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is one of the structural schematic diagrams of the electronic device provided in the embodiment of the present application;

[0014] Figure 2 This is the second structural diagram of the electronic device provided in the embodiment of the present application;

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

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

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

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

[0019] Figure 7 This is the third structural diagram of the electronic device provided in the embodiment of the present application;

[0020] Figure 8 is a flow chart of an imaging method provided in an embodiment of the present application;

[0021] Fig. 9 is a schematic diagram of an electronic device provided in an embodiment of the present application;

[0022] Fig.10 It is a hardware schematic diagram of the electronic device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0024] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0025] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0026] The terms "at least one (item)", "at least one of" and the like in the specification and claims of the present application refer to any one, any two or a combination of more than two of the objects included therein. For example, at least one (item) of a, b, and c can be represented by: "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 (items)" refers to two or more, and its meaning is similar to that of "at least one (item)".

[0027] The electronic device, imaging method and readable storage medium provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0028] Night screen fill light face recognition is a technology that uses the screen's fill light function to assist face recognition. In a night environment, due to insufficient light, traditional face recognition systems may not be able to accurately recognize faces. Therefore, fill light can be displayed on the screen to provide additional light to enhance the face recognition effect at night.

[0029] Although night screen fill light can improve visibility in night environments to a certain extent, it also has some potential disadvantages; for example, it may cause eye fatigue and discomfort to users, and affect the quality and rhythm of sleep. In order to avoid these problems, active near-infrared face recognition can be used to provide high-quality face images that are not affected by ambient light. Active near-infrared face recognition uses a single infrared device to illuminate the face, and uses an infrared camera to receive infrared light reflected from the face for imaging in order to perform face recognition.

[0030] However, due to the use of a single infrared device, the field of view (FOV) of the single infrared device is small and the irradiation distance is short due to the layout position and the power-on current, so that only a single feature point of the face can be collected during face recognition, resulting in poor accuracy and security of face recognition. In order to solve the above problems, the embodiments of the present application provide an electronic device, an imaging method and a readable storage medium. The electronic device provided in the embodiments of the present application can be applied to the scene of face recognition at night.

[0031] In the electronic device provided in the embodiment of the present application, the electronic device may include a display screen and an infrared camera arranged on one side of the display screen; the display screen includes a graphene oxide liquid crystal layer, the graphene oxide liquid crystal layer is used to emit infrared light when receiving photons, and the position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer changes with the voltage change of the graphene oxide liquid crystal layer; the infrared camera is used to receive the reflected light of the infrared light and perform imaging based on the reflected light. Through this electronic device, infrared light can be emitted by the graphene oxide liquid crystal layer when receiving photons, and the reflected light of the infrared light can be received by the infrared camera, and then imaging can be performed based on the reflected light. Compared with a single infrared device, the emission of infrared light through the graphene oxide liquid crystal layer can increase the FOV and irradiation distance, so that more facial feature points can be collected when performing face recognition, which can improve the accuracy and security of face recognition.

[0032] Furthermore, the electronic device provided in the embodiment of the present application can realize infrared face recognition without relying on infrared transmitter lamps, thereby saving infrared transmitter lamps, and the human eye cannot perceive the screen light when unlocking at night, thereby increasing privacy protection and eye protection effects.

[0033] It should be noted that the up, down, left and right involved in the embodiments of the present application are all indicated when the screen of the electronic device is placed horizontally toward the user.

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

[0035] Among them, the above-mentioned display screen 11 includes a graphene oxide liquid crystal layer 13, which is used to emit infrared light when receiving photons, and the positions of graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer 13 change with the voltage of the graphene oxide liquid crystal layer 13; the above-mentioned infrared camera 12 is used to receive the reflected light of the infrared light and perform imaging based on the reflected light.

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

[0037] For example, taking the display screen 11 as a flexible screen, the display screen 11 may be a folding screen or a scroll screen, etc.

[0038] Optionally, in the embodiment of the present application, the above-mentioned display screen 11 can be a light-emitting diode (Light-Emitting Diode, LED) screen, an organic light-emitting diode (Organic LED, OLED) screen or a liquid crystal display (Liquid Crystal Display, LCD) and the like.

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

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

[0041] Optionally, in the embodiment of the present application, 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 has 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 form a visualized image through digital signal processing and image processing algorithms.

[0042] Specifically, when infrared light shines on the surface of an object, part of the light will be absorbed by the object, and part of the light will be diffusely reflected. The reflected infrared light can be captured by the infrared light receiver of the above-mentioned infrared camera 12; then the infrared light receiver converts the reflected infrared light into electrical signals; then the infrared camera 12 can process the received electrical signals through an image processor, including amplification, filtering, enhancement and other processing, and finally convert them into a visual image.

[0043] It should be noted that Figure 1 The infrared camera 12 and the display screen 11 are only shown in the figure as being in the same plane. In actual implementation, the infrared camera 12 can also be set at any possible position such as below the display screen, and the embodiment of the present application is not limited thereto.

[0044] In the embodiment of the present application, the above-mentioned graphene oxide liquid crystal molecules are precursors of the combination of liquid crystal and graphene.

[0045] It should be noted that graphene is an almost completely transparent substance. It is a two-dimensional nanomaterial with a hexagonal honeycomb lattice structure composed of a single layer of carbon atoms and has excellent optical properties. Graphene can photoemit infrared light because there are many photoelectron states on the surface of graphene. When external light excites these photoelectron states, electron transitions will occur, and energetic vibrations will be generated, causing the atoms and molecules on the surface of graphene to vibrate and collide continuously, ultimately generating infrared radiation.

[0046] Specifically, when photons are incident on the graphene surface, they are absorbed and some electrons are excited. These excited electrons begin to move freely on the graphene surface, forming a two-dimensional electron gas. These freely moving electrons interact with each other to produce a surface plasmon, which can propagate on the graphene surface, ultimately causing infrared radiation to be generated on the graphene surface.

[0047] However, in order to achieve the purpose of eye protection and increase the infrared light emission area, graphene needs to be able to move in the above-mentioned graphene oxide liquid crystal layer 13, so the graphene needs to be liquid crystalized. But it is not enough to realize the deposition of graphene and liquid crystal in the state of a mixture, and graphene molecules and liquid crystal molecules need to be bound together. Therefore, graphene oxide liquid crystal molecules are used in the above-mentioned graphene oxide liquid crystal layer 13. Its ultra-high aspect ratio allows its dispersion to form liquid crystal at extremely low concentrations. Among them, the liquid crystal molecules are only used to drive the graphene molecules to move and do not participate in the actual infrared light emission. The graphene molecules themselves are easily excited and emit infrared light. The wavelength of graphene far-infrared light is about 5-20 microns, and its principle is photogenerated carrier radiation. Light excitation causes the electrons inside the material to transition to the allowed excited state. When these electrons return to their thermal equilibrium state, the excess energy can be released through the luminescence process and the non-radiation process. The energy of the photoluminescent radiation light is related to the different energy level differences between the two electronic states, which involves the transition between the excited state and the equilibrium state.

[0048] Optionally, in the embodiment of the present 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 power-on state of the graphene oxide liquid crystal layer 13 .

[0049] It can be understood that when the power-on 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 an embodiment of the present application, the number of graphene oxide liquid crystal molecules in the above-mentioned graphene oxide liquid crystal layer 13 can be determined according to actual usage; as the concentration of the graphene oxide liquid crystal molecules decreases, the reflection wavelength of the liquid crystal photonic crystal will produce a red shift, so the emitted infrared band can be adjusted by changing the solubility of the graphene oxide liquid crystal molecules.

[0051] Optionally, in the embodiment of the present application, combined with Figure 1 ,like Figure 2 As shown, the display screen 11 may further include a pixel layer 14, and the pixel layer 14 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 the embodiment of the present application, the pixel layer 14 may be disposed below the graphene oxide liquid crystal layer 13 (ie, on a side close to a main board of the electronic device 10 ).

[0054] Optionally, in the embodiment of the present application, the pixel types of the at least two pixels are related to the display screen 11 .

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

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

[0057] In the embodiment of the present application, since the pixel layer including at least two pixels for emitting light can be parallel to the graphene oxide liquid crystal layer and arranged 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 photo-emitting infrared rays and saving power consumption of the device in emitting infrared rays.

[0058] Optionally, in the embodiment of the present application, combined with Figure 2 ,like Figure 3 As shown, when the graphene oxide liquid crystal layer 13 is not powered, the graphene oxide liquid crystal molecules 15 in the graphene oxide liquid crystal layer 13 are arranged in a disordered manner; or, Figure 2 ,like Figure 4 As shown, when the graphene oxide liquid crystal layer 13 is powered on, the positions of the graphene oxide liquid crystal molecules 15 in the graphene oxide liquid crystal layer 13 and the positions of the at least two pixels 16 in the pixel layer 14 do not overlap in a first direction, and the first direction is a direction perpendicular to the display screen 11.

[0059] Optionally, in the embodiment of the present application, the position of the graphene oxide liquid crystal molecules 15 in the graphene oxide liquid crystal layer 13 can be changed by whether an electric potential is applied to both ends of the graphene oxide liquid crystal layer 13 (i.e., whether electricity is turned on).

[0060] Optionally, in the embodiment of the present application, the above-mentioned disordered arrangement can be a random arrangement; it can be understood that the above-mentioned disordered graphene oxide liquid crystal molecules 15 can be randomly dispersed in the above-mentioned graphene oxide liquid crystal layer 13, so as to increase the emission area of ​​infrared light.

[0061] For example, Figure 3As shown, the graphene oxide liquid crystal molecules 15 are arranged disorderly in the graphene oxide liquid crystal layer 13, so that the graphene oxide liquid crystal molecules 15 can cover the entire graphene oxide liquid crystal layer 13 as much as possible, so that the entire display screen 11 becomes an infrared light emission surface because of the graphene oxide liquid crystal layer 13, thereby increasing the emission area of ​​the graphene oxide liquid crystal layer 13. In this way, the feature points reflected by the surface light source through the face can be richer, and compared with the application of a single infrared device, facial features can be formed more simply, and the anti-cracking ability is exponentially enhanced.

[0062] Optionally, in an embodiment of the present application, the positions of the graphene oxide liquid crystal molecules 15 in the graphene oxide liquid crystal layer 13 and the positions of the at least two pixels 16 in the pixel layer 14 do not overlap in the first direction, which can be understood as: the graphene oxide liquid crystal molecules 15 are 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, Figure 5 As shown, from a top view, the graphene oxide liquid crystal molecules are orderly arranged between the pixels of the pixel layer. In this way, the graphene oxide liquid crystal molecules will not be excited by the light source to emit infrared light, and will not affect the normal display of the display screen pixels.

[0064] Optionally, in an embodiment of the present application, when the graphene oxide liquid crystal layer 13 is not powered on, corresponding to the screen unlocking fill light scenario, the at least two pixels 16 emit light, the graphene oxide liquid crystal molecules 15 are disorderly arranged, and are photoinduced to emit infrared light by the pixel excitation; when the graphene oxide liquid crystal layer 13 is powered on, the 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 the embodiment of the present application, the screen control circuit in the electronic device can add a metal oxide semiconductor (MOS) tube to control the voltage of the graphene oxide liquid crystal layer 13. For example, the circuit diagram of the circuit is as follows: Figure 6 As shown, when the above-mentioned display screen 11 is used normally, the pixels emit light normally, Vdata is a negative voltage, VGL is a positive voltage, PMOS is turned on, there is a voltage at both ends of the graphene oxide liquid crystal layer 13, and the above-mentioned graphene oxide liquid crystal molecules 15 are arranged in an orderly manner in the gaps between the pixels, and do not emit infrared light; when face recognition is required, Vdata is a positive voltage, VGL is a negative voltage, PMOS is turned off, there is no voltage at both ends of the graphene oxide liquid crystal layer 13, and the above-mentioned graphene oxide liquid crystal molecules 15 are arranged disorderly, thereby increasing the emission area, and are stimulated by the light emitted by the pixels to emit infrared light.

[0066] In the embodiment of the present application, since the arrangement of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer can be changed into a disordered arrangement or an ordered arrangement by changing the power-on state of the graphene oxide liquid crystal layer, the arrangement position of the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer can be flexibly controlled. Therefore, when performing face recognition, the emission area of ​​infrared light can be increased by not powering the graphene oxide liquid crystal layer, thereby improving the accuracy of face recognition, and when the display screen is used normally, the graphene oxide is arranged in an orderly manner by powering the graphene oxide liquid crystal layer to avoid affecting the light emission of the pixel points.

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

[0068] 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 embodiment of the present application, the sodium chloride solution 17 may also be other highly polar organic solvents. The embodiment of the present application is only illustrative of the sodium chloride solution and is not limited in actual implementation.

[0070] It should be noted that, under normal circumstances, graphene oxide liquid crystal molecules can only exist in a low ionic strength environment or a high polarity organic solvent. Graphene oxide liquid crystal molecules can be stable in a saturated sodium chloride solution, so the entire graphene oxide liquid crystal layer 13 is wrapped by transparent crystals, and a saturated sodium chloride solution 17 flows inside. At the same time, electrodes are added to the graphene oxide liquid crystal layer 13 for applying an electric potential.

[0071] In the embodiment of the present application, 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, so that they can maintain a stable existence.

[0072] Optionally, in the embodiment of the present application, polyelectrolyte may be adsorbed on the graphene oxide liquid crystal molecules 15 .

[0073] Optionally, in the embodiment of the present application, the polyelectrolyte may be a polyelectrolyte with high hydration capacity.

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

[0075] In the electronic device provided in the embodiment of the present application, the graphene oxide liquid crystal layer can emit infrared light when receiving photons, and the infrared camera can receive the reflected light of the infrared light, and then image based on the reflected light. Compared with a single infrared device, the emission of infrared light through the graphene oxide liquid crystal layer can increase the FOV and irradiation distance, so that more facial feature points can be collected during face recognition, which can improve the accuracy and security of face recognition.

[0076] An embodiment of the present application further provides an imaging method, which is applied to the electronic device in the above embodiment. Figure 8 FIG. 2 shows a flow chart of an imaging method provided in an embodiment of the present application. Figure 8 As shown, the imaging method provided in the embodiment of the present application may include the following steps 801 and 802.

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

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

[0079] Optionally, in the embodiment of the present application, the display screen may further include: a pixel layer parallel to the graphene oxide liquid crystal layer and arranged on one side of the graphene oxide liquid crystal layer, the pixel layer including at least two pixels for emitting light. Exemplarily, the step 801 may be implemented by the following step 801a.

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

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

[0082] In the imaging method provided in the embodiment of the present application, the electronic device can control the display screen to light up so that the graphene oxide liquid crystal layer in the display screen emits infrared light, and then receives the reflected light of the infrared light through the infrared camera, and performs imaging based on the reflected light. Compared with a single infrared device, the emission of infrared light through the graphene oxide liquid crystal layer can increase the FOV and irradiation distance, so that more facial feature points can be collected during face recognition, which can improve the accuracy and security of face recognition.

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

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

[0085] Wherein, when the above-mentioned graphene oxide liquid crystal layer is not energized, the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are arranged disorderly; or, when the above-mentioned 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 above-mentioned at least two pixels in the above-mentioned pixel layer in a first direction, and the first direction is a direction perpendicular to the display screen.

[0086] For other descriptions in the embodiments of the present application and the technical effects that can be achieved by each technical feature, reference can be made to the relevant descriptions in the above-mentioned electronic device embodiments. In order to avoid repetition, they will not be repeated here.

[0087] The above-mentioned method embodiments, or various possible implementation methods in each method embodiment, can be executed separately, or, under the premise that there is no contradiction, can also be executed in combination with each other. The specific implementation can be determined according to actual usage requirements, and the embodiments of the present application do not limit this.

[0088] like Fig. 9 As shown, an embodiment of the present application further provides an electronic device 100, including a processor 101 and a memory 102, wherein the memory 102 stores programs or instructions that can be executed on the processor 101, and when the program or instructions are executed by the processor 101, the various steps of the imaging method embodiment described above are implemented, and the same technical effect can be achieved. To avoid repetition, they are not described here.

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

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

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

[0092] Those skilled in the art will appreciate that the electronic device 1000 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.10The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0093] Among them, the processor 1010 can be used to control the display screen of the electronic device to light up, wherein, when the display screen is on, the graphene oxide liquid crystal layer in the display screen can emit infrared light; and through the infrared camera of the electronic device, receive the reflected light of the infrared light emitted by the graphene oxide liquid crystal layer, and perform imaging based on the reflected light.

[0094] In a possible implementation, the display screen may further include: 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. Exemplarily, the processor 1010 may be specifically configured to control the at least two pixels to emit light.

[0095] In a possible implementation, the processor 1010 may also be used to control the power-on state of the graphene oxide liquid crystal layer through a field effect transistor in an electronic device; wherein, when the graphene oxide liquid crystal layer is not powered on, the graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer are arranged disorderly; or, when the graphene oxide liquid crystal layer is powered on, 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, and the first direction is a direction perpendicular to the display screen.

[0096] In the electronic device provided in the embodiment of the present application, the electronic device can control the display screen to light up, so that the graphene oxide liquid crystal layer in the display screen emits infrared light, and then receives the reflected light of the infrared light through the infrared camera, and performs imaging based on the reflected light. Compared with a single infrared device, the emission of infrared light through the graphene oxide liquid crystal layer can increase the FOV and irradiation distance, so that more facial feature points can be collected during face recognition, which can improve the accuracy and security of face recognition.

[0097] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. 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 two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0098] The memory 1009 can be used to store software programs and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application 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 processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0100] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned imaging method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

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

[0102] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned imaging method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0103] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

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

[0105] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0106] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0107] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electronic device, characterized in that: 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, the graphene oxide liquid crystal layer is used to emit infrared light when receiving photons, and the positions of graphene oxide liquid crystal molecules in the graphene oxide liquid crystal layer change as the voltage of the graphene oxide liquid crystal layer changes; The infrared camera is used to receive the reflected light of the infrared light and perform imaging based on the reflected light.

2. The electronic device according to claim 1, characterized in that: The display screen further comprises a pixel layer, wherein the pixel layer comprises at least two pixels for emitting light; The pixel layer is parallel to the graphene oxide liquid crystal layer and is arranged on one side of the graphene oxide liquid crystal layer.

3. The electronic device according to claim 2, characterized in that: 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 disorderly; 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, and the first direction is a direction perpendicular to the display screen.

4. 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.

5. The electronic device according to any one of claims 1 to 4, characterized in that: A polyelectrolyte is adsorbed on each of the at least two graphene oxides 14 .

6. An imaging method, applied to the electronic device according to any one of claims 1 to 5, characterized in that: The method comprises: Controlling a display screen of the electronic device to light up, wherein when the display screen is lit up, the graphene oxide liquid crystal layer in the display 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.

7. The method according to claim 6, characterized in that The display screen further comprises: a pixel layer parallel to the graphene oxide liquid crystal layer and arranged on one side of the graphene oxide liquid crystal layer, the pixel layer comprising at least two pixels for emitting light; The controlling the display screen of the electronic device to light up includes: The at least two pixels are controlled to emit light.

8. The method according to claim 7, characterized in that The method further comprises: Controlling the power-on state of the graphene oxide liquid crystal layer through a 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 disorderly; 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 and the positions of the at least two pixels in the pixel layer do not overlap in a first direction, and the first direction is a direction perpendicular to the display screen.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the imaging method according to any one of claims 6 to 8 are implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores a program or an instruction, and when the program or the instruction is executed by the processor, the steps of the imaging method according to any one of claims 6 to 8 are implemented.

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