CN210199782U

CN210199782U - Fingerprint identification module and electronic equipment

Info

Publication number: CN210199782U
Application number: CN201921237650.2U
Authority: CN
Inventors: Yungang Sun; 孙云刚; Taiyi Cheng; 程泰毅; Fengyun Yan; 焉逢运
Original assignee: Silead Inc
Current assignee: Silead Inc
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-03-27
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses a fingerprint identification module and electronic equipment, this electronic equipment includes: a display screen; the fingerprint identification module is arranged below the display screen; fingerprint identification module includes: a fingerprint chip; a circuit board; a lens and a module holder; the fingerprint chip is used for receiving target signal light; the circuit board is electrically connected with the fingerprint chip; the module bracket is arranged on the circuit board and supports the lens between the display screen and the fingerprint chip; the middle frame is used for mounting the fingerprint identification module and is positioned on the outer side of the module bracket; the middle frame is provided with a first plane facing the display screen, and the fingerprint identification module is arranged between the lens and the first plane and is provided with an anti-reflection structure. The utility model provides a fingerprint identification module and electronic equipment can weaken noise light to promote the discernment performance of fingerprint identification module.

Description

Fingerprint identification module and electronic equipment

Technical Field

The utility model relates to an optical fingerprint identification field under the screen, in particular to fingerprint identification module and electronic equipment.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

Currently, optical fingerprint identification technology is widely used. The optical fingerprint identification technology is based on the principle that a fingerprint chip receives target signal light reflected by a finger of a user pressing or contacting a display screen, converts the target signal light into an electric signal, generates a fingerprint image, and further sends the fingerprint image to an image processor in signal connection with the fingerprint image. The image processor processes the image to obtain a fingerprint signal, and performs fingerprint identification on the fingerprint signal through an algorithm.

Generally, the fingerprint identification module is provided with the camera lens that is used for assembling the light that the user's finger reflected back between fingerprint chip and display screen. However, in practical tests, it is found that the light entering the lens has not only the light reflected by the user's finger but also a lot of noise light. It is due to these noise lights that the recognition performance of the fingerprint recognition module is deteriorated.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.

SUMMERY OF THE UTILITY MODEL

The applicant has found that the above noise light is generated because the frame and the middle frame on the periphery of the lens generally include smooth inclined surfaces, and the middle frame is generally made of metal. These smooth slopes may create different instances of specular reflection of light reflected back from the user's finger, thereby creating the above-described noisy light rays that enter the lens optics.

In order to overcome the defects of the prior art, the embodiment of the utility model provides a fingerprint identification module and electronic equipment, it can weaken noise light to promote the identification performance of fingerprint identification module.

The above object of the present invention can be achieved by the following technical solutions:

an electronic device, comprising:

a display screen;

the fingerprint identification module is arranged below the display screen; fingerprint identification module includes: a fingerprint chip; a circuit board; a lens and a module holder; the fingerprint chip is used for receiving target signal light; the circuit board is electrically connected with the fingerprint chip; the module bracket is arranged on the circuit board and supports the lens between the display screen and the fingerprint chip;

the middle frame is used for mounting the fingerprint identification module and is positioned on the outer side of the module bracket; the middle frame is provided with a first plane facing the display screen, and the fingerprint identification module is arranged between the lens and the first plane and is provided with an anti-reflection structure.

In a preferred embodiment, the lens barrel comprises a lens barrel and an optical lens arranged in the lens barrel, wherein the surface of the lens barrel opposite to the display screen is a first inclined surface inclined towards the center of the lens barrel;

the fingerprint identification module is provided with a transition inclined plane between the first inclined plane and the first plane, and at least part of the transition inclined plane is closer to the display screen relative to the first inclined plane; the anti-reflection structure is arranged on the transition inclined plane.

In a preferred embodiment, the transition slope and the first slope are located on the same slope, and the transition slope and the first slope have the same slope.

In a preferred embodiment, the middle frame covers a surface of the module bracket opposite to the display screen, and the transition inclined plane is arranged on the middle frame.

In a preferred embodiment, the module bracket includes a spacer located between the middle frame and the lens barrel, and at least a portion of the transition slope is disposed at an end of the spacer close to the display screen.

In a preferred embodiment, the anti-reflection structure is a unitary structure with the transition slope.

In a preferred embodiment, the anti-reflection structure is made of plastic.

In a preferred embodiment, the anti-reflective structure is a rough structure and/or an anti-reflective coating.

A fingerprint identification module, comprising: a fingerprint chip; a circuit board; a lens and a module holder;

the fingerprint chip is used for receiving target signal light; the circuit board is electrically connected with the fingerprint chip; the module bracket is arranged on the circuit board and used for supporting the lens on one side of the fingerprint chip; the fingerprint identification module is in camera lens week side is equipped with anti-reflection structure.

In a preferred embodiment, the fingerprint identification module is arranged below a display screen through a middle frame, the middle frame is provided with a first plane facing the display screen, the lens comprises a lens barrel and an optical lens arranged in the lens barrel, and the surface of the lens barrel opposite to the display screen is a first inclined surface inclined towards the center of the lens barrel;

In a preferred embodiment, the fingerprint identification module is arranged below the display screen, and the fingerprint identification module is arranged between the fingerprint chip and the display screen and is provided with a filter layer.

Has the advantages that:

the embodiment of the utility model provides an electronic equipment and fingerprint identification module, through the camera lens with be equipped with antireflection structure between the first plane of center, can effectively reduce or weaken the produced noise light in original smooth inclined plane to improve the SNR of fingerprint identification module, improve the identification performance of fingerprint identification module.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

Fig. 1 is a schematic structural diagram of a first electronic device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a second electronic device provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a third electronic device provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a fourth electronic device provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first fingerprint identification module provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a second fingerprint identification module provided in the embodiment of the present application;

fig. 7 is a schematic structural diagram of a third fingerprint identification module provided in the embodiment of the present application.

Description of reference numerals:

10. a fingerprint identification module; 20. a middle frame; 21. a first plane; 30. a display screen; 40. a transition bevel; 301. excitation light; 302. a target signal light; 1. a fingerprint chip; 2. a circuit board; 31. an optical lens; 32. a lens barrel; 321. a first inclined plane; 4. a module holder; 41. a first surface; 42. a second surface; 5. an optical filter; 6. a connecting portion; 7. and (7) leading wires.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model discloses fingerprint identification module 10 of embodiment can be assembled in the electronic equipment. In this specification, the direction of the electronic device equipped with the fingerprint recognition module 10 of the embodiment of the present invention, which is directed toward or facing the user in the normal use state, is defined as "up", and the opposite direction, or the direction away from the user is defined as "down". More specifically, an upward direction illustrated in fig. 1 to 7 is defined as "up", and a downward direction illustrated in fig. 1 to 7 is defined as "down".

It should be noted that the definitions of the directions in the present specification are only for convenience of describing the technical solution of the present invention, and do not limit the directions of the fingerprint identification module 10 in other scenes, including but not limited to use, test, transportation, and manufacture, which may cause the directions of the fingerprint identification module 10 to be reversed or the positions to be changed.

The embodiment of the utility model provides a fingerprint identification module 10, it can apply to including but not limited to under the screen in scenes such as fingerprint unblock, user authentication, authority acquisition. Specifically, when the utility model discloses fingerprint identification module 10 is disposed in electronic equipment when, electronic equipment can acquire user's fingerprint characteristic information based on this fingerprint identification module 10 for match with the fingerprint information of storage, with the realization to current user's authentication, thereby confirm whether it has corresponding authority to carry out relevant operation to electronic equipment.

It should be noted that the fingerprint information obtained as described above is only one common example of the user's biometric features. Within the scope that can be envisioned, those skilled in the art can extend the technical solution of the embodiments of the present invention to be applied in any suitable biometric authentication scenario. For example, the embodiment of the present invention does not limit the scene of verification by acquiring biometric information such as iris and palm print of the user. The following is set forth in a scenario in which fingerprint information of a user is obtained as a main description. However, as can be seen from the above description, the scope of the embodiments of the present invention is not limited thereto.

The utility model discloses an identification module for optical fingerprint under screen can be used in including but not limited to electronic equipment such as mobile smart mobile phone, dull and stereotyped electronic equipment, computer, GPS navigator, personal digital assistant, the wearable equipment of intelligence.

In order to realize the basic functions of the electronic device, the electronic device mentioned in the embodiments of the present invention may further include other necessary modules or components. Taking a mobile smart phone as an example, it may further include a communication module, a battery, and the like.

It should be noted that any other necessary modules or components included in the electronic device may be used in any suitable existing configuration. In order to clearly and briefly explain the technical solutions provided by the present invention, the above parts will not be described again, and the drawings in the specification are also simplified correspondingly. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended.

As shown in fig. 1 to 4, the electronic device is provided with a display screen 30 and a fingerprint identification module 10, and the fingerprint identification module 10 is disposed below the display screen 30. Specifically, the electronic device may be provided with a middle frame 20, and the fingerprint identification module 10 is installed below the display screen 30 through the middle frame 20, and is fixed. And, relative and interval between fingerprint identification module 10 and the display screen 30.

The display panel 30 is a self-luminous display panel using self-luminous units as display pixels, such as an OLED display panel. Thus, the display screen 30 may act as an excitation light source, emitting excitation light 301 towards the user's finger.

The fingerprint identification module 10 includes a fingerprint chip 1 for converting the optical signal into an electrical signal, and the fingerprint chip 1 is used for receiving a target signal light 302 reflected back from a user finger above the display screen 30. Also, the target signal light 302 may be converted into an electrical signal to generate a fingerprint image.

The fingerprint identification module 10 may further include a circuit board 2 electrically connected to the fingerprint chip 1, for receiving the electrical signal transmitted from the fingerprint chip 1. The circuit board 2 not only provides a structural supporting function for the fingerprint chip 1, but also provides a processing circuit (image processor) for a fingerprint image generated by the fingerprint chip 1 to perform image processing to obtain a fingerprint signal, and performs fingerprint identification on the fingerprint signal through an algorithm.

The application does not limit the electrical connection mode of the fingerprint chip 1 and the circuit board 2. The fingerprint chip 1 may be electrically connected to the circuit board 2 through leads 7 as shown, or may be electrically connected through a rewiring layer or other means. When the fingerprint chip 1 and the circuit board 2 are electrically connected through the leads 7, the circuit board 2 can be connected to the lower surface of the fingerprint chip 1 through the connecting portion 6. In particular, the connection 6 may be DAF glue or other adhesive. Among them, DAF (Die Attach Film) is an ultra-thin Film adhesive. The connection portion 6 in this embodiment employs DAF glue.

Further, the fingerprint identification module 10 may further include a lens located between the display screen 30 and the fingerprint chip 1 and a module bracket 4 for the lens to be disposed. The lens is used for converging light reflected by a finger of a user so as to enable the light to be converged to the fingerprint chip 1 positioned below the lens. The module bracket 4 is arranged on the circuit board 2 and supports the lens between the display screen 30 and the fingerprint chip 1. The middle frame 20 is located outside the module holder 4. The middle frame 20 is provided with a first plane 21 facing the display screen 30. The fingerprint identification module is equipped with anti-reflection structure between the camera lens with first plane 21, promptly the camera lens week side is equipped with anti-reflection structure to effectively reduce or weaken the produced noise light of original smooth inclined plane, thereby improve the SNR of fingerprint identification module 10, improve the identification performance of fingerprint identification module 10.

In the embodiment of the present application, the anti-reflection structure may be made of plastic in order to attenuate noise light. The anti-reflective structure may also be a roughness and/or an anti-reflective coating, such as a roughness formed by grooving or sanding, an anti-reflective coating formed by applying a black paint or other dark coating.

In the present embodiment, the lens may include a lens barrel 32 and an optical lens 31 provided in the lens barrel 32. The optical lens 31 may include convex, micro, and concave lenses, etc., and the convex, micro, and concave lenses may be aspheric convex, micro, and concave lenses. I.e. the optical lens 31 is an unconventional lens. The type and number of optical lenses 31 can be adjusted according to actual requirements.

Optical lens piece 31 not only can the convergent light to can realize converging to fingerprint chip 1 with comparatively dispersed signal light in the wide angle within range on, can also correct optical distortion, carry out optical imaging, thereby can make things convenient for fingerprint chip 1 to the collection of fingerprint figure, promote imaging quality.

The outer wall of the lens barrel 32 may be provided with external threads, and the mounting hole of the module bracket 4 is a threaded hole adapted thereto. Thus, the lens barrel 32 is screwed into the mounting hole of the module holder 4, and the lens is moved up and down. Thereby, the distance between the optical lens 31 and the fingerprint chip 1 is adjusted, and the focusing of the lens is realized.

In a preferred embodiment, the surface of the lens barrel 32 opposite to the display screen 30 is a first inclined surface 321 inclined toward the center of the lens to ensure that more target signal light 302 reflected by the user's finger can enter the optical lens 31 of the lens.

In one embodiment, the anti-reflection structure may be a right-angle structure, so that the fingerprint identification module has no inclined plane between the lens and the first plane. This can effectively prevent noise light from being generated from the smooth slope on the periphery side of the lens, but is disadvantageous in that more of the target signal light 302 reflected back by the user's finger enters into the optical lens 31 of the lens.

In another embodiment, the anti-reflection structure may be a structure that makes both the middle frame 20 and the module holder 4 lower than the lens barrel 32, i.e. the distance between the lens barrel 32 and the display screen 30 is smaller than the distance between the middle frame 20 or the module holder 4 and the display screen 30. This ensures that the noise light on the lens peripheral side is effectively reduced by the blockage of the lens barrel 32 while more target signal light 302 reflected by the user's finger enters the optical lens 31.

In the embodiment of the present application, the fingerprint identification module 10 is provided with a transition slope 40 between the first slope 321 and the first plane 21, and the anti-reflection structure may be provided on the transition slope 40. Wherein at least a portion of the transition bevel 40 is closer to the display screen than the first bevel 321, so as to better fix the lens.

In a preferred embodiment, the anti-reflection structure is a unitary structure with the transition slope 40. The anti-reflection structure is made of plastic, or the anti-reflection structure is a rough structure and/or an anti-reflection coating, so that the transition inclined plane 40 is a non-metal inclined plane and/or a rough inclined plane, noise light generated by the original smooth inclined plane is effectively reduced or weakened, the signal-to-noise ratio of the fingerprint identification module 10 is improved, and the identification performance of the fingerprint identification module 10 is improved. The non-metal bevel may be a plastic bevel, a dark bevel coated with black paint or other dark coating, or other bevel that does not reflect light strongly.

In one embodiment, as shown in fig. 1 and 2, the middle frame 20 covers a surface of the module holder 4 opposite to the display screen 30. At this time, the transition slope 40 is provided on the middle frame 20. A part of the outer wall of the lens barrel 32 is connected to the module holder 4, and the remaining part is in contact with the middle frame 20. The first plane 21 of the middle frame 20 is higher than the highest point of the lens barrel 32, so that the lens can be better fixed.

Specifically, the transition inclined plane 40 is disposed on a portion of the surface of the middle frame 20 opposite to the display screen 30, which is close to the lens, and is inclined toward the center of the lens. In order to further ensure that more target signal light 302 reflected by the user's finger can enter the lens of the lens, i.e. increase the signal light, thereby improving the signal-to-noise ratio of the fingerprint identification module 10 and improving the identification performance of the fingerprint identification module 10, the transition inclined plane 40 and the first inclined plane 321 are located on the same inclined plane, and the inclinations of the two inclined planes are the same, as shown in fig. 1 and fig. 2. The arrangement is such that the surface of the middle frame 20 opposite to the display screen 30 does not block the target signal light 302 received by the lens from being reflected back from the user's finger above the display screen 30.

Wherein, the transition slope 40 may be provided with an anti-reflection structure made of plastic. Specifically, the material of the middle frame 20 is preferably plastic, so as to avoid the transition slope 40 being a metal slope, which generates much noise light. Or the transition chamfer 40 may be grooved or frosted to form a roughness structure as shown in fig. 2. Or applying a black paint or other dark coating to the transition bevel 40 to form an anti-reflective coating.

That is, the transition slope 40 is a plastic slope, or the transition slope 40 is a rough slope, or the transition slope 40 is a dark slope coated with an anti-reflection coating. Of course, the three (plastic bevel, rough bevel, dark bevel) can be combined in pairs as a new embodiment. Or, the transition inclined plane 40 is a combination of a plastic inclined plane, a rough inclined plane and a dark inclined plane, so as to achieve a better effect of reducing noise light.

In another embodiment, as shown in fig. 3 and 4, the module holder 4 includes a spacer between the middle frame 20 and the lens barrel 32, i.e. at least a part of the surface of the module holder 4 opposite to the display screen 30 is not covered by the middle frame 20. At this time, the surface of the module holder 4 opposite to the display screen 30 includes a first surface 41 covered by the middle frame 20 and a second surface 42 not covered by the middle frame, the first surface 41 is far away from the lens, the second surface 42 is close to the lens, and the second surface 42 is a surface of the partition portion close to the display screen 30.

Specifically, at least a portion of the transition slope 40 is disposed at an end of the partition portion close to the display screen, that is, at least a portion of the transition slope 40 is disposed on the second surface 42. Preferably, the transition bevel 40 is provided on a second surface 42 of said module holder 4. The outer wall portion of the lens barrel 32 is entirely connected to the module holder 4. The highest point of the module bracket 4 is higher than the highest point of the lens barrel 32, which can ensure better fixation of the lens.

More specifically, the transition slope 40 is disposed on a portion of the second surface 42 close to the lens, and is inclined toward the center of the lens. In order to further ensure that more target signal light 302 reflected by the user's finger can enter the lens of the lens, i.e. increase the signal light, thereby improving the signal-to-noise ratio of the fingerprint identification module 10 and improving the identification performance of the fingerprint identification module 10, the transition inclined plane 40 and the first inclined plane 321 are located on the same inclined plane, and the inclinations of the two inclined planes are the same, as shown in fig. 3 and 4. So set up, make the surface of module support 4 with the display screen 30 is relative will not block the camera lens and receive from the target signal light 302 of user's finger reflection back above the display screen 30.

Wherein, the transition slope 40 may be provided with an anti-reflection structure made of plastic. Specifically, the material of the module holder 4 is preferably plastic, so as to avoid the transition slope 40 being a metal slope, thereby generating more noise light. Or the transition chamfer 40 may be grooved or frosted to form a roughness structure as shown in fig. 4. Or applying a black paint or other dark coating to the transition bevel 40 to form an anti-reflective coating.

In the embodiment of the present application, the first inclined surface 321 of the lens barrel 32 is not processed, because the lens is generally integrally provided, and it is difficult to groove, sand or paint the first inclined surface 321 of the lens barrel 32 alone. Moreover, the material of the lens barrel 32 is generally plastic, and the length of the first inclined plane 321 in the direction parallel to the display screen 30 is smaller than the length of the transition inclined plane 40 in the direction parallel to the display screen 30, so that the noise light generated by the first inclined plane 321 is less and negligible.

In the embodiment of the present application, a filter layer may be further disposed between the fingerprint chip 1 and the display screen 30. The filter layer is used for at least partially filtering out noise light mixed in the target signal light 302, so that the sensing of the fingerprint chip 1 on the received light is improved, and the imaging quality is improved.

Specifically, the filter layer may include the optical filter 5. The optical filter 5 may be disposed below the lens and connected to the module holder 4 to be fixed.

Fig. 5 to 6 are schematic structural diagrams of the fingerprint identification module 10 according to the embodiment of the present disclosure. The structure of the fingerprint identification module 10 is described in detail in the above embodiments, and is not described herein again. The embodiment of fig. 5 is the fingerprint recognition module 10 in the electronic device of fig. 1 and 2, the embodiment of fig. 6 is the fingerprint recognition module 10 in the electronic device of fig. 3, and the embodiment of fig. 7 is the fingerprint recognition module 10 in the electronic device of fig. 4.

The embodiment of the utility model provides an electronic equipment and fingerprint identification module 10, through the camera lens with be equipped with antireflection structure between the first plane 21 of center 20, can effectively reduce or weaken the produced noise light of original smooth inclined plane to improve fingerprint identification module 10's SNR, improve fingerprint identification module 10's identification performance.

On the other hand, the first inclined plane 321 and the transition inclined plane 40 are located on the same plane (i.e. the inclined planes of the lens barrel 32 and the middle frame 20 are located on the same plane, or the inclined planes of the lens barrel 32 and the module bracket 4 are located on the same plane), which can ensure that more target signal light 302 reflected by the user's finger can enter the lens of the lens, i.e. increase signal light, thereby improving the signal-to-noise ratio of the fingerprint identification module 10 and improving the identification performance of the fingerprint identification module 10.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The above description is only a few embodiments of the present invention, and although the embodiments of the present invention are disclosed as above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention.

Claims

1. An electronic device, comprising:

a display screen;

2. The electronic device according to claim 1, wherein the lens comprises a lens barrel and an optical lens arranged in the lens barrel, and a surface of the lens barrel opposite to the display screen is a first inclined surface inclined toward a center of the lens barrel;

3. The electronic device of claim 2, wherein the transition slope is located on the same slope as the first slope, and wherein the transition slope has the same slope as the first slope.

4. The electronic device of claim 2, wherein the middle frame covers a surface of the module holder opposite to the display screen, and the transition slope is disposed on the middle frame.

5. The electronic device according to claim 2, wherein the module holder comprises a spacer located between the middle frame and the lens barrel, and at least a part of the transition slope is disposed at an end of the spacer close to the display screen.

6. The electronic device of claim 2, wherein the anti-reflection structure is a unitary structure with the transition slope.

7. The electronic device according to claim 1 or 2, wherein the anti-reflection structure is made of plastic.

8. Electronic device according to claim 1 or 2, characterized in that the anti-reflection structure is a rough structure and/or an anti-reflection coating.

9. The utility model provides a fingerprint identification module, its characterized in that, the fingerprint identification module includes: a fingerprint chip; a circuit board; a lens and a module holder;

10. The fingerprint identification module of claim 9, disposed under a display screen through a middle frame, wherein the middle frame is provided with a first plane facing the display screen, and the lens comprises a lens barrel and an optical lens disposed in the lens barrel, and a surface of the lens barrel opposite to the display screen is a first inclined surface inclined toward a center of the lens barrel;

11. The fingerprint identification module of claim 10, wherein the module holder comprises a spacer located between the middle frame and the lens barrel, and at least a portion of the transition slope is disposed at an end of the spacer adjacent to the display screen.

12. The fingerprint identification module of claim 9, disposed below a display screen, wherein the fingerprint identification module is provided with a filter layer between the fingerprint chip and the display screen.