Electronic device

Abstract

The application discloses an electronic device, and belongs to the technical field of communication devices. The electronic device comprises a display screen, a bearing piece, an infrared sensor and a light-absorbing layer. The display screen is arranged on one side of the bearing piece, the infrared sensor is arranged on the other side of the bearing piece, and the light-absorbing layer is arranged between the display screen and the bearing piece. The electronic device disclosed by the application can solve the problem of poor detection accuracy of the infrared sensor of the electronic device.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of communication equipment, and particularly relates to an electronic device. BACKGROUND

[0002] With the increasing demand for high screen ratio of the display area of an electronic device, an infrared sensor of the electronic device can be placed below a display screen, and the area of the display screen opposite to the infrared sensor can still retain display function, thereby improving the screen ratio of the display area. An existing electronic device comprises a display screen, a bearing member and an infrared sensor, and the display screen and the infrared sensor are respectively arranged on two sides of the bearing member. In the working process of the infrared sensor, part of infrared emission light emitted by the infrared sensor meets the display screen, and is refracted and reflected by the display screen and the bearing member, and is finally received by the infrared sensor, but this part of light does not reach the measured object, is not reflected light from the measured object, and belongs to noise light, which affects the detection accuracy of the infrared sensor.

[0003] In order to ensure the detection accuracy of the infrared sensor, noise calibration values of light energy received by the infrared sensor need to be removed, so as to obtain the reflected light energy of the real measured object.

[0004] In the related art, the noise calibration values are determined in the design process of the electronic device, but after the electronic device is assembled, assembly stress is released, and in the process of using the electronic device by a user, there are drop stress and harsh temperature environment, so that the space structure among the infrared sensor, the bearing member and the display screen is changed slightly, the noise light has high sensitivity to the structure, the change of the structure slightly affects the noise light, the generated noise light is unstable, and therefore, the method of obtaining the reflected light energy of the real measured object by removing the noise calibration values is also inaccurate, thereby affecting the detection accuracy of the infrared sensor. SUMMARY

[0005] The application aims to provide an electronic device, which can solve the problem of poor detection accuracy of an infrared sensor in the electronic device.

[0006] The application provides an electronic device, which comprises a display screen, a bearing member, an infrared sensor and a light absorption layer.

[0007] The display screen is arranged on one side of the bearing member, the infrared sensor is arranged on the other side of the bearing member, and the light absorption layer is arranged between the display screen and the bearing member.

[0008] In the embodiment of the present application, the light-absorbing layer is arranged between the display screen and the bearing of the electronic device, which can absorb the infrared light generated by refraction and reflection of the display screen and the bearing, so that the infrared light received by the infrared sensor is almost completely the infrared light emitted by the infrared sensor and reflected by the measured object. If the infrared light generated by refraction and reflection of the display screen and the bearing is received by the infrared sensor, the detection accuracy will be affected. The light-absorbing layer in the embodiment of the present application can absorb this part of infrared light, so as to avoid the influence of this part of infrared light on the detection accuracy of the infrared sensor, thereby improving the detection accuracy of the infrared sensor. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 FIG. 1 is a structural schematic diagram of an electronic device in an embodiment of the present application;

[0010] Figure 2 FIG. 2 is a partial top view of the electronic device in the embodiment of the present application.

[0011] Figure 3 FIG. 3 is a structural schematic diagram of a light-absorbing layer in the embodiment of the present application;

[0012] Figure 4 FIG. 4 is a structural schematic diagram of a light-absorbing layer in another embodiment of the present application;

[0013] Figure 5 is a side view of a part of Figure 4

[0014] Figure 6 FIG. 6 is a schematic diagram of the arrangement position of the light-absorbing layer in the embodiment of the present application;

[0015] REFERENCE SIGNS:

[0016] 100 - light-absorbing layer, 110 - second light-out hole, 120 - second light-in hole, 130 - first metal layer, 140 - first dielectric layer, 150 - second metal layer, 160 - second dielectric layer, 170 - metal bottom plate, 180 - first sub-unit, 190 - second sub-unit,

[0017] 200 - display screen,

[0018] 300 - bearing, 310 - first light-out hole, 320 - first light-in hole,

[0019] 400 - infrared sensor, 410 - infrared emitter, 420 - infrared receiver,

[0020] 500 - mainboard,

[0021] 600 - measured object. DETAILED DESCRIPTION

[0022] ​Clearly, the described embodiments are only some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art are within the scope of protection of the present application.

[0023] 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 data used in this way can be interchanged under appropriate circumstances, 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 a kind and are not limited in number, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in a "or" relationship.

[0024] The electronic device provided by the embodiments of the present application will be described in detail below in combination with the drawings and specific embodiments and their application scenarios.

[0025] As shown in Figures 1 to 6 The electronic device provided by the embodiments of the present application, the electronic device includes a display screen 200, a bearing member 300, an infrared sensor 400 and a light absorption layer 100.

[0026] The display screen 200 is a display member of the electronic device, used to output text, images, videos and other content to the user, and also used to receive the operation input of the user. The display screen 200 can include a light emitting layer, a glass cover plate, a circuit layer, etc.

[0027] The bearing member 300 is a main member of the electronic device, used to support the display screen 200. The display screen 200 is arranged on one side of the bearing member 300, and the infrared sensor 400 is arranged on the other side of the bearing member 300. Optionally, the bearing member 300 can be a separately arranged structural member, or the bearing member 300 can also be a middle frame of the electronic device.

[0028] It can be understood that the electronic device has a mounting space for mounting other functional devices. The functional devices specifically include a mainboard 500, a battery and an infrared sensor 400 of the electronic device, etc. The mounting space can be surrounded by the bearing member 300, or can be surrounded by the bearing member 300 and the shell of the electronic device.

[0029] The bearing member 300 has a plate-shaped structure of metal material to bear the display screen 200, and specifically can adopt aluminum alloy, magnesium alloy and other materials. The bearing member 300 can also be in the form of combination of metal plate and injection molding part, which is not specifically limited here.

[0030] The infrared sensor 400 is used to detect the measured object 600 outside the display screen 200, for example, the distance from the measured object 600 to the display screen 200 can be determined to control the electronic device according to the distance. The infrared sensor 400 can include an infrared emitter 410 and an infrared receiver 420, the infrared emitter 410 is used to emit infrared light, and the infrared receiver 420 is used to receive infrared light. For example, the infrared emitter 410 can be an infrared emitting diode, and the infrared receiver 420 can be an infrared receiving diode. After the infrared light emitted by the infrared emitter 410 reaches the measured object 600 and is reflected by the measured object 600, it is received by the infrared receiver 420. The infrared sensor 400 can determine the distance from the measured object 600 to the display screen 200 according to the received infrared light and the emitted infrared light.

[0031] The light absorption layer 100 is arranged between the display screen 200 and the carrier 300 to absorb the infrared light between the display screen 200 and the carrier 300.

[0032] In the embodiment of the present application, the light absorption layer 100 is arranged between the display screen 200 and the carrier 300, and the light absorption layer 100 can absorb the infrared light generated by the reflection and refraction of the display screen 200 and the carrier 300, and eliminate the detection of the noise. The infrared light received by the infrared sensor 400 is almost completely reflected by the measured object 600, and the infrared light generated by the reflection and refraction of the display screen 200 and the carrier 300 is avoided to be received by the infrared sensor 400, so as to improve the detection accuracy of the infrared sensor 400.

[0033] In the embodiment of the present application, the orthographic projection of the light absorption layer 100 on the plane of the carrier 300 is located in the range of the orthographic projection of the infrared sensor 400 on the plane of the carrier 300. That is, the light absorption layer 100 is arranged only in the area corresponding to the infrared sensor 400 between the display screen 200 and the carrier 300, and it is not necessary to arrange the light absorption layer 100 under the entire display screen 200, so as to minimize the setting area of the light absorption layer 100 and save materials. Of course, the orthographic projection of the light absorption layer 100 on the plane of the carrier 300 can also coincide with the edge of the orthographic projection of the infrared sensor 400 on the plane of the carrier 300. It can be understood that the orthographic projection of the light absorption layer 100 on the plane of the carrier 300 can also exceed the orthographic projection of the infrared sensor 400 on the plane of the carrier 300, which is specifically considered according to the light absorption capacity and cost of the light absorption layer 100.

[0034] The carrier 300 of the electronic device is provided with a first light-out hole 310 and a first light-in hole 320. The infrared sensor 400 is arranged on the other side of the carrier 300. The infrared sensor 400 can include an infrared emitting member 410 opposite to the first light-out hole 310 and an infrared receiving member 420 opposite to the first light-in hole 320. The infrared light emitted by the infrared emitting member 410 can irradiate the measured object 600 through the first light-out hole 310 and be absorbed by the infrared receiving member 420 through the first light-in hole 320 after being reflected by the measured object 600. The light-absorbing layer 100 is arranged around the first light-out hole 310 and the first light-in hole 320. In this arrangement, the light-absorbing layer 100 can absorb the infrared light refracted and reflected by the display screen 200 and the carrier 300, and does not affect the infrared light emitted by the infrared emitting member 410 irradiating the measured object 600 through the first light-out hole 310 and being absorbed by the infrared receiving member 420 through the first light-in hole 320 after being reflected by the measured object 600.

[0035] In the embodiment, the light-absorbing layer 100 is provided with a second light-out hole 110 and a second light-in hole 120, the second light-out hole 110 is arranged opposite to the first light-out hole 310, and the second light-in hole 120 is arranged opposite to the first light-in hole 320. The light-absorbing layer 100 does not affect the infrared light emitted by the infrared emitting member 410 irradiating the measured object 600 through the first light-out hole 310 and being absorbed by the infrared receiving member 420 through the first light-in hole 320 after being reflected by the measured object 600.

[0036] In the embodiment, optionally, the diameter of the first light-out hole 310 is D1, and the edge of the second light-out hole 110 is away from the edge of the first light-out hole 310 by a first width W1 in a direction away from the center of the first light-out hole 310. The range of W1 / D1 is 1 / 5-1 / 3, for example, which can be 1 / 5, 1 / 4, 1 / 3, etc.

[0037] Optionally, the diameter of the first light-in hole 320 is D2, and the edge of the second light-in hole 120 is away from the edge of the first light-in hole 320 by a second width W2 in a direction away from the center of the first light-in hole 320. The range of W2 / D2 is 1 / 5-1 / 3, for example, which can be 1 / 5, 1 / 4, 1 / 3, etc. Of course, D1, W1, D2 and W2 can also satisfy the above conditions at the same time.

[0038] The edge of the second light-out hole 110 is kept away from the edge of the first light-out hole 310 by a certain distance in a direction away from the center of the first light-out hole 310, and the edge of the second light-in hole 120 is kept away from the edge of the first light-in hole 320 by a certain distance in a direction away from the center of the first light-in hole 320, so that the light-absorbing layer 100 does not affect the infrared light passing through the first light-out hole 310 to irradiate the measured object 600, nor does it affect the infrared light reflected by the measured object 600 passing through the first light-in hole 320 to be absorbed by the infrared receiver 420.

[0039] For example, the diameter of the first light-out hole 310 is 4 mm, and the edge of the second light-out hole 110 is kept away from the edge of the first light-out hole 310 by a first width of 1 mm in a direction away from the center of the first light-out hole 310. At this time, W1 / D1 is 1 / 4.

[0040] The diameter of the first light-in hole 320 is 4 mm, and the edge of the second light-in hole 120 is kept away from the edge of the first light-in hole 320 by a second width of 1 mm in a direction away from the center of the first light-in hole 320. At this time, W2 / D2 is 1 / 4.

[0041] The distance between the edge of the second light-out hole 110 and the edge of the second light-in hole 120 is L3, and L3 ranges from 3 mm to 5 mm. For example, L3 can be 4 mm.

[0042] In the embodiment of the present application, the light-absorbing layer 100 can be one or more of a super-structured material layer, a black coating, a black light-absorbing sheet, or a black adhesive tape. In the case where the light-absorbing layer 100 is one of a super-structured material layer, a black coating, a black light-absorbing sheet, or a black adhesive tape, one of the super-structured material layer, the black coating, the black light-absorbing sheet, or the black adhesive tape is interposed between the carrier 300 and the display screen 200. In the case where the light-absorbing layer 100 is multiple of a super-structured material layer, a black coating, a black light-absorbing sheet, or a black adhesive tape, the multiple of the super-structured material layer, the black coating, the black light-absorbing sheet, or the black adhesive tape can be stacked or spliced and then interposed between the carrier 300 and the display screen 200.

[0043] Of course, the light-absorbing layer 100 can also be other forms of light-absorbing layer 100, and the type of the light-absorbing layer 100 is not limited in the embodiment of the present application. The light-absorbing layer 100 can be formed on the carrier 300 by coating, and the carrier 300 and the light-absorbing layer 100 can be designed in an integrated manner.

[0044] In the embodiment of the present application, in the case where the light-absorbing layer 100 is a super-structured material layer, full absorption of infrared light between the display screen and the carrier can be achieved.

[0045] Optionally, the diameter of the first light-out hole 310 is D1, the distance between the edge of the light-absorbing layer 100 and the edge of the second light-out hole 110 is L1, and L1 / D1≥1 / 5, for example, 1 / 5, 1 / 4, etc. Further, L1 / D1<1, and the setting area of the light-absorbing layer 100 can be reduced as much as possible.

[0046] Optionally, the diameter of the first light-in hole 320 is D2, the distance between the edge of the light-absorbing layer 100 and the edge of the second light-in hole 120 is L2, and L2 / D2≥1 / 5, for example, 1 / 5, 1 / 4, etc. Further, L2 / D2<1, and the setting area of the light-absorbing layer 100 can be reduced as much as possible. Of course, L1, D1 and L2, D2 can also satisfy the above conditions at the same time.

[0047] The edge of the light-absorbing layer 100 and the edge of the second light-out hole 110 have a certain distance. That is, the edge of the light-absorbing layer 100 expands a certain distance relative to the edge of the second light-out hole 110 in the direction away from the center of the second light-out hole 110, and the edge of the light-absorbing layer 100 and the edge of the second light-in hole 120 have a certain distance. That is, the edge of the light-absorbing layer 100 expands a certain distance relative to the edge of the second light-in hole 120 in the direction away from the center of the second light-in hole 120, so that the light-absorbing layer 100 can absorb as much infrared light as possible generated by refraction and reflection between the display screen 200 and the carrier 300.

[0048] For example, the diameter of the first light-out hole 310 is 4mm, and the distance between the edge of the light-absorbing layer 100 and the edge of the second light-out hole 110 is 0.8mm, so L1 / D1 is 1 / 5.

[0049] The diameter of the first light-in hole 320 is 4mm, and the distance between the edge of the light-absorbing layer 100 and the edge of the second light-in hole 120 is 0.8mm, so L2 / D2 is 1 / 5.

[0050] Since the light-absorbing layer 100 adopts a metamaterial layer, it can almost completely absorb the infrared light generated by refraction and reflection between the display screen 200 and the carrier 300, so the above size can meet the light-absorbing requirement.

[0051] In the case that the light-absorbing layer 100 is a metamaterial layer, the light-absorbing layer 100 includes a first metal layer 130, a first dielectric layer 140, and a second metal layer 150. The first dielectric layer 140 is arranged between the first metal layer 130 and the second metal layer 150, the first metal layer 130 is close to the display screen 200, and the second metal layer 150 is close to the carrier 300. In this structure, the surfaces of the first metal layer 130 and the second metal layer 150 can be excited by photons to form surface plasmon resonance, at the resonance wavelength, the surface of the metal layer forms an antisymmetric current distribution, and a magnetic dipole resonance is generated in the first dielectric layer 140. Significant electromagnetic coupling can significantly improve the dissipation of the light field in the structure, thereby achieving significant light absorption enhancement at the resonance wavelength, so that the infrared light generated by the refraction and reflection of the display screen 200 and the carrier 300 can be absorbed as much as possible.

[0052] Further, the light-absorbing layer 100 further includes a second dielectric layer 160 and a metal bottom plate 170, the second dielectric layer 160 is arranged between the second metal layer 150 and the metal bottom plate 170, and the metal bottom plate 170 is arranged on the side of the second dielectric layer 160 close to the carrier 300. The second dielectric layer 160 and the metal bottom plate 170 increase the number of metal layers and dielectric layers, which can make the absorption rate of infrared light higher.

[0053] Optionally, the metal material of the first metal layer 130, the second metal layer 150, and the metal bottom plate can be gold (Au), and the electrical conductivity is 4.56x10^7 S / m. The dielectric material of the first dielectric layer 140 and the second dielectric layer 160 can be germanium (Ge), and the relative refractive index is 4.

[0054] In the embodiment of the present application, the first metal layer 130, the first dielectric layer 140, the second metal layer 150, and the second dielectric layer 160 are stacked, and a plurality of first sub-units 180 are formed on the metal bottom plate 170. The plurality of first sub-units 180 are in strip shape in the first extension direction of the metal bottom plate 170. The plurality of first sub-units 180 are arranged at intervals in the second extension direction of the metal bottom plate 170, and the first extension direction is perpendicular to the second extension direction.

[0055] When the infrared light is incident on the first sub-unit 180, the first sub-unit 180 generates a spatial electric field, the spatial electric field forms a vortex current, thereby inducing a strong spatial magnetic field. The induced magnetic field interacts strongly with the incident light magnetic field, thereby generating magnetic plasmon resonance, realizing electromagnetic absorption, and the overall absorption rate can be greater than 90%, which can almost completely absorb the infrared light generated by the display screen 200 of the electronic device and the refraction effect.

[0056] In the embodiments of the present application, the widths of the plurality of first sub-units 180 decrease successively along the second extension direction within the preset range of the metal back plate 170. The absorption of wide-spectrum infrared light can be achieved, for example, the absorption of infrared light of 800 nm-1200 nm can be achieved.

[0057] In the embodiments of the present application, when the electromagnetic wave (infrared light) is incident on the light-absorbing layer 100 of the metamaterial layer, the absorption rate + reflectivity + transmittance = 1, and A(ω), R(ω), and T(ω) are respectively the absorption rate, reflectivity, and transmittance, ω is the angular frequency of the electromagnetic wave, and then A(ω) + R(ω) + T(ω) = 1.

[0058]

[0059] In the electromagnetic simulation calculation, the reflection coefficient is S 11 , the transmission coefficient is S 21 , the thickness of the light-absorbing layer 100 of the metamaterial layer is d, then S 21 depends on the complex impedance z = z1 + iz2 and the complex refractive index n = n1 + in2 of the material, and the vacuum wave vector k = ω / c, c is the speed of light in vacuum, then

[0060] R(ω) = |S 11 | 2

[0061] T(ω) = |S 21 | 2

[0062]

[0063]

[0064] To achieve complete light absorption, the light-absorbing layer 100 of the metamaterial layer and the spatial impedance need to achieve impedance matching (the impedance of the two is equal), that is, the structure of the light-absorbing layer 100 of the metamaterial layer is reasonably designed, approximately satisfies z1 = 1, z2 = 0, and n1 = 1, n2 = +∞, so that R(ω) and T(ω) are 0, that is, A(ω) = 1.

[0065]

[0066]

[0067] ​Therefore, the size, number, material and other parameters of the light-absorbing layer 100 of the metamaterial layer can be calculated by simulation according to the demand and the above formula: the light-absorbing layer 100 includes a plurality of light-absorbing units, each light-absorbing unit includes six first sub-units 180, and the distance between the centers of adjacent first sub-units 180 in the light-absorbing unit along the second extension direction is 1.5 um, the widths of the six first sub-units 180 are 0.241 um, 0.233 um, 0.225 um, 0.218 um, 0.206 um and 0.201 um in turn, and the thicknesses of the first metal layer 130, the first dielectric layer 140, the second metal layer 150 and the second dielectric layer 160 are 0.05 um, 0.65 um, 0.05 um and 0.2 um in turn. The light-absorbing layer 100 can realize the absorption of infrared light with a wide spectrum of 800 nm to 1200 nm, and the overall absorption rate is greater than 90%, which can almost completely absorb the infrared light emitted and refracted by the display screen 200 of the electronic device.

[0068] In the embodiment of the present application, when the electromagnetic wave (infrared light) is incident on the surface of the resonant unit, the multiple reflection interference model formed is as shown in FIG. 6. Figure 6

[0069] When the electromagnetic wave is incident on the interface between the display screen 200 and the first metal layer 130 at an arbitrary angle a, the incident electromagnetic wave will form a transmitted wave and a reflected wave, and the reflection coefficient and the transmission coefficient are respectively and

[0070] When the transmitted wave transmits through the first dielectric layer 140 to reach the second metal layer 150, the transmitted wave has a propagation phase β, and then total reflection occurs;

[0071] The electromagnetic wave continues to transmit through the dielectric layer to reach the first metal layer 130, and there is also a propagation phase β in this stage. Then the electromagnetic wave circulates between the two interfaces to emit and transmit, and finally the total reflected wave is equivalent to the superposition of multiple reflected waves on the interface, that is,

[0072]

[0073] S 12 , S 21 represents the transmission parameter of the first metal layer 130, S 11 , S 22 represents the reflection parameter of the first metal layer 130, S 23 is the reflection parameter of the second metal layer 150, and β is the propagation phase in the first dielectric layer 140. Since the reflectivity + the absorption + the transmissivity = 1, when the absorption is ignored, to realize the complete absorption of the infrared light by the light-absorbing layer 100 of the metamaterial layer, the total reflectivity S 11total = 0 is required. ​

[0074] The size, number, material and other parameters of the light-absorbing layer 100 of the metamaterial layer can be calculated by simulation according to requirements and the above formula: the first metal layer 130 includes a plurality of cross-shaped structures or grid structures. Of course, the first metal layer 130 can also include a plurality of structures of other shapes. The plurality of cross-shaped structures or grid structures are of the same size, and a plurality of resonant units of the same size can be integrated to absorb infrared light of a narrow spectrum, for example, to absorb infrared light of 950 nm. If it is necessary to realize absorption of infrared light of a wide spectrum, a plurality of resonant units of different sizes can be integrated.

[0075] In the embodiment of the application, the electronic device includes a display screen 200, a carrier 300, an infrared sensor 400 and a light-absorbing layer 100. The display screen 200 is arranged on one side of the carrier 300, the infrared sensor 400 is arranged on the other side of the carrier 300, and the light-absorbing layer 100 is arranged between the display screen 200 and the carrier 300.

[0076] The orthographic projection of the light-absorbing layer 100 on the plane of the carrier 300 is located within the orthographic projection of the infrared sensor 400 on the plane of the carrier 300. The carrier 300 is provided with a first light-out hole 310 and a first light-in hole 320, and the light-absorbing layer 100 is arranged around the first light-out hole 310 and the first light-in hole 320. The light-absorbing layer 100 is provided with a second light-out hole 110 and a second light-in hole 120, the second light-out hole 110 is arranged opposite to the first light-out hole 310, and the second light-in hole 120 is arranged opposite to the first light-in hole 320.

[0077] The infrared sensor 400 can include an infrared emitting element 410 and an infrared receiving element 420. The infrared emitting element 410 is opposite to the first light-out hole 310, and the infrared receiving element 420 is opposite to the first light-in hole 320.

[0078] The light-absorbing layer 100 arranged between the display screen 200 and the carrier 300 can absorb the infrared light generated by refraction and reflection of the display screen 200 and the carrier 300, so that the infrared light received by the infrared sensor 400 is almost completely the infrared light emitted by the infrared sensor 400 to the measured object 600 and reflected back by the measured object 600, thereby avoiding the influence of the infrared light generated by refraction and reflection of the display screen 200 and the carrier 300 on the detection accuracy of the infrared sensor 400, and improving the detection accuracy of the infrared sensor 400.

[0079] It should be noted that, in this document, the terms "comprising", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0080] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, which are merely illustrative and not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. An electronic device, comprising: The display screen (200), the carrier (300), the infrared sensor (400) and the light absorption layer (100) are included. The display screen (200) is arranged on one side of the carrier (300), the infrared sensor (400) is arranged on the other side of the carrier (300), and the light absorption layer (100) is arranged between the display screen (200) and the carrier (300). The light absorption layer (100) is a superstructure material layer, the light absorption layer (100) includes a first metal layer (130), a first dielectric layer (140), a second metal layer (150), a second dielectric layer (160) and a metal bottom plate (170), the first metal layer (130), the first dielectric layer (140), the second metal layer (150) and the second dielectric layer (160) are sequentially stacked, and a plurality of first sub-units (180) are formed on the metal bottom plate (170), the second dielectric layer (160) is arranged between the second metal layer (150) and the metal bottom plate (170), the metal bottom plate (170) is arranged on the side of the second dielectric layer (160) close to the carrier (300), a plurality of the first sub-units (180) are in strip shape in the first extension direction of the metal bottom plate (170), and a plurality of the first sub-units (180) are arranged at intervals in the second extension direction of the metal bottom plate (170), the first extension direction is perpendicular to the second extension direction. The light absorption layer (100) includes a plurality of light absorption units, each of the light absorption units includes six first sub-units (180), in the light absorption unit, the distance between the centers of adjacent first sub-units (180) along the second extension direction is 1.5um, and the widths of the six first sub-units (180) are 0.241um, 0.233um, 0.225um, 0.218um, 0.206um and 0.201um in turn. The thicknesses of the first metal layer (130), the first dielectric layer (140), the second metal layer (150) and the second dielectric layer (160) are 0.05um, 0.65um, 0.05um and 0.2um in turn.

2. The electronic device of claim 1, wherein, The orthographic projection of the light absorption layer (100) on the plane where the carrier (300) is located is located in the range of the orthographic projection of the infrared sensor (400) on the plane where the carrier (300) is located.

3. The electronic device of claim 1, wherein, The carrier (300) is provided with a first light outlet hole (310) and a first light inlet hole (320), and the light absorption layer (100) is arranged around the first light outlet hole (310) and the first light inlet hole (320). The light absorption layer (100) is provided with a second light outlet hole (110) and a second light inlet hole (120), the second light outlet hole (110) is arranged opposite to the first light outlet hole (310), and the second light inlet hole (120) is arranged opposite to the first light inlet hole (320).

4. The electronic device of claim 3, wherein, The diameter of the first light-out hole (310) is D1, the edge of the second light-out hole (110) is kept away from the edge of the first light-out hole (310) by a first width W1 in a direction away from the center of the first light-out hole (310), and W1 / D1 is in a range of 1 / 5-1 / 3; and / or The diameter of the first light-in hole (320) is D2, the edge of the second light-in hole (120) is kept away from the edge of the first light-in hole (320) by a second width W2 in a direction away from the center of the first light-in hole (320), and W2 / D2 is in a range of 1 / 5-1 / 3.

5. The electronic device of claim 3, wherein, The diameter of the first light-out hole (310) is D1, the distance between the edge of the light-absorbing layer (100) and the second light-out hole (110) is L1, and L1 / D1 is greater than or equal to 1 / 5; and / or The diameter of the first light-in hole (320) is D2, the distance between the edge of the light-absorbing layer (100) and the edge of the second light-in hole (120) is L2, and L2 / D2 is greater than or equal to 1 / 5.

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