CN213211046U

CN213211046U - Fingerprint module, display module and terminal

Info

Publication number: CN213211046U
Application number: CN202022328460.0U
Authority: CN
Inventors: 郭延顺
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-05-14
Anticipated expiration: 2030-10-19

Abstract

The utility model relates to a fingerprint module, display module and terminal. The fingerprint module is arranged below a display screen of the terminal and comprises a first reflecting element, a lens assembly, a second reflecting element and a photosensitive element; the first reflecting element reflects the fingerprint light and transmits the fingerprint light to the lens assembly along the first transmission path, and the second reflecting element reflects the fingerprint light emitted by the lens assembly and transmits the fingerprint light to the light sensing element along the second transmission path. Through the utility model discloses a two reflective element pass through the secondary reflection with fingerprint light, fingerprint identification's distance promotes by a wide margin, and the user points and need not touch screen and can realize fingerprint identification, and experience effect is good.

Description

Fingerprint module, display module and terminal

Technical Field

The utility model relates to a fingerprint identification technical field especially relates to fingerprint module, display module and terminal.

Background

At present, terminal devices such as mobile phones and tablets become indispensable tools in life of people, and functions of the terminal devices are more and more. The fingerprint identification function in the terminal equipment has the advantages of convenience, quickness, strong confidentiality and the like, and is more and more widely applied.

Optical fingerprint identification is refraction and the reflection principle of utilizing light to cell-phone fingerprint identification function is the example, and the screen is pressed to the finger, and the light that the screen sent illuminates the finger region, illuminates the reflection light (fingerprint light) of fingerprint and returns to the fingerprint module sensor of screen below through the clearance of screen pixel on to acquire the image of fingerprint image and cell-phone first input and contrast, discern the judgement at last.

Because the restriction of cell-phone thickness, the fingerprint module is more and more littleer in the thickness direction for the identification distance of fingerprint module is shorter, and at the fingerprint identification in-process, the finger must touch the screen and just can discern, and user experience is poor.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists among the correlation technique, the utility model provides a fingerprint module, display module and terminal.

According to a first aspect of the embodiments of the present disclosure, a fingerprint module is provided and installed below a display screen of a terminal, where the fingerprint module includes a first reflective element, a lens assembly, a second reflective element, and a photosensitive element; the first reflecting element reflects the fingerprint light rays and transmits the fingerprint light rays to the lens assembly along a first transmission path, and the second reflecting element reflects the fingerprint light rays emitted by the lens assembly and transmits the fingerprint light rays to the photosensitive element along a second transmission path.

In an embodiment, the first transmission path and the second transmission path are both parallel to a display surface of the display screen.

In one embodiment, the reflective surface of the first reflective element faces the fingerprint identification area of the display screen; the reflecting surface of the second reflecting element and the display surface of the display screen are arranged in a third angle, and the third angle is 30-60 degrees; the lens assembly is located between the first reflecting element and the second reflecting element, and a photosensitive surface of the photosensitive element faces the reflecting surface of the second reflecting element.

In one embodiment, the third angle is 45 degrees.

In one embodiment, the first transfer path is perpendicular to the second transfer path.

In an embodiment, an included angle between the reflection surface of the first reflection element and the display surface is a first angle, and the first angle is 30 to 60 degrees.

In one embodiment, the first angle is 45 degrees.

In an embodiment, an included angle between the reflection surface of the second reflection element and the reflection surface of the first reflection element is a second angle, and the second angle is 30 to 60 degrees.

In one embodiment, the second angle is 45 degrees.

In one embodiment, the fingerprint module further comprises: and the optical filter is arranged between the photosensitive element and the second reflecting element.

In an embodiment, the first reflecting element, the lens assembly, the second emitting element and the photosensitive element are disposed in the housing.

According to a second aspect of embodiments of the present disclosure, there is provided a display assembly comprising: a display screen; and the fingerprint module of any embodiment in above-mentioned first aspect, the fingerprint module set up in the below of display screen.

According to a third aspect of the embodiments of the present disclosure, there is provided a terminal, including: a terminal body; and the display component of any embodiment of the second aspect, wherein the display component is arranged on the terminal body.

The embodiment of the utility model provides a technical scheme can include following beneficial effect: this is disclosed through two reflective element with fingerprint light through secondary reflection, fingerprint identification's distance promotes by a wide margin, and the user finger need not touch screen can realize fingerprint identification, and experience effect is good.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of an underscreen fingerprint module in the related art.

Fig. 2 is a simplified schematic diagram of fig. 1 in the related art.

FIG. 3 is a simplified diagram of an adjusted finger print module in the related art.

Fig. 4 is a schematic structural diagram of a terminal shown according to an exemplary embodiment of the present disclosure.

Fig. 5 is a schematic front view of a fingerprint module shown below a display screen according to an exemplary embodiment of the present disclosure.

Fig. 6 is a schematic top view of fig. 5 shown in accordance with an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Fig. 1 is a schematic structural diagram of an underscreen fingerprint module in the related art. Fig. 2 is a simplified schematic diagram of fig. 1 in the related art. FIG. 3 is a simplified diagram of a prior art after a finger print module adjusts the focal length.

As shown in fig. 1 to 3, the display module 100 in the related art is installed below the display screen 10, and the display module 100 includes a fingerprint lens 20, a fingerprint chip 30 and a circuit board 40 electrically connected to the fingerprint chip 30, which are sequentially arranged along the thickness direction of the display screen 10. When a finger touches the fingerprint identification area of the display screen 10, the light emitted by the screen of the display screen 10 illuminates the finger, and the illuminated fingerprint light is transmitted through the thickness direction of the screen, is refracted by the lens inside the fingerprint lens 20 in sequence and then is transmitted to the fingerprint chip 30 for fingerprint imaging so as to perform fingerprint identification.

In the above fingerprint recognition process, the fingerprint light is transmitted along a path in a direction perpendicular to the display screen 10, that is, along the thickness direction of the display screen 10. Because be limited by the thickness of complete machine, the whole thickness of fingerprint module 100 also receives the restriction, and the object distance U of fingerprint module 100 is shorter with like distance V, and fingerprint identification's distance is little promptly, leads to pointing must touch display screen 10 and just can carry out fingerprint identification, and the discernment precision is low, and user experience is poor.

For the fingerprint identification distance of improving fingerprint module 100, the object distance U and the image distance V of fingerprint module 100 just must increase, become long focus from the short focus of line module 100. In the related art, as shown in fig. 3, the object distance U and the image distance V of the fingerprint module 100 are increased by increasing the distance between the fingerprint lens 20 and the fingerprint chip 30 in the direction perpendicular to the display screen 10, so as to realize the long focal length of the fingerprint module 100, and improve the fingerprint identification distance of the fingerprint module 100, so that the fingerprint can be identified without touching the display screen 10. However, the above solution, increasing the distance between the fingerprint lens 20 and the fingerprint chip 30 in the direction perpendicular to the display screen 10 will undoubtedly increase the thickness of the display device with the display screen 10, which is not favorable for implementing an ultra-thin display device.

In view of the existence of above-mentioned problem, this disclosed embodiment provides a fingerprint module, under the prerequisite that does not increase whole thickness, realizes long distance's fingerprint identification, and the finger need not the touch screen promptly and can discern the fingerprint, promotes user experience.

Fig. 4 is a schematic structural diagram of a terminal shown according to an exemplary embodiment of the present disclosure. Fig. 5 is a schematic front view of a fingerprint module shown below a display screen according to an exemplary embodiment of the present disclosure. Fig. 6 is a schematic top view of fig. 5 shown in accordance with an exemplary embodiment of the present disclosure.

As shown in fig. 4 to 6, the fingerprint module 200 of the present disclosure may be installed below the display screen 310 of the terminal 300 to realize the off-screen fingerprint identification. Below the display screen 310 is below the back of the display screen 310 (in the Z direction in the figure).

The terminal 300 may be an electronic device having a display function, such as a mobile phone, a tablet, a notebook computer, and a wearable device. The present disclosure is illustrated with a mobile phone as an example, but not limited thereto.

The terminal 300 may include a terminal body, and a display assembly provided on the terminal body. The display assembly may include a display screen 310 and a fingerprint module 200 disposed below the display screen 310.

The terminal 300 is exemplified by a mobile phone, and the display screen 310 can be installed on a middle frame of the mobile phone, wherein a display surface of the display screen 310 is parallel to a horizontal plane formed by XY. Install fingerprint module 200 between center and display screen 310. The other side of the middle frame can be provided with a battery for supplying electric energy.

The display screen 310 may be an Organic Light Emitting Diode (OLED) display screen, for example, a flexible organic light emitting diode display screen or a rigid organic light emitting diode display screen. Display screen 310 has the fingerprint identification region, and when the finger was located the fingerprint identification region, the light that display screen 310 sent illuminated the finger to acquire fingerprint light, fingerprint light sees through display screen 310 and reflects fingerprint module 200 to the display screen 310 below, carries out fingerprint identification.

The fingerprint identification area may be located in a lower middle portion of the display screen 310 to facilitate easy access by a user's finger. The present disclosure is not limited thereto and the fingerprint recognition area may be located at an upper portion, a left side portion, or a right side portion of the display screen 310, or the entire display area of the display screen 310.

The fingerprint module 200 of the present disclosure includes a first reflective element 210, a lens assembly 220, a second reflective element 230 and a photosensitive element 240.

The first reflecting element 210 is used for reflecting the fingerprint light and transmitting the fingerprint light to the lens assembly 220 along the first transmission path D1, and the second reflecting element 230 is used for reflecting the fingerprint light emitted from the lens assembly 220 and transmitting the fingerprint light to the light sensing element 240 along the second transmission path D2, so as to image the fingerprint light and perform fingerprint identification. In an embodiment, the first transmitting path D1 and the second transmitting path D2 may be parallel to the display surface of the display panel 310, that is, the first transmitting path D1 and the second transmitting path D2 are parallel to the plane formed by XY. The direction of the first transmission path D1 may be along the optical axis of the lens assembly 220, i.e. the first reflective element 210, the lens assembly 220 and the second reflective element 230 may be arranged along the X direction. In one embodiment, the second transmission path D2 may be perpendicular to the first transmission path D1, i.e. the light sensing element 240 is disposed along the Y direction, so that the fingerprint light incident on the second reflecting element 230 is at a 90 degree right angle to the fingerprint light reflected by the second reflecting element 230.

When a finger is located in the fingerprint identification area on the display screen 310, the light emitted from the display screen 310 irradiates the finger to obtain fingerprint light, the fingerprint light irradiates the first reflecting element 210, is reflected by the first reflecting element 210 and then is transmitted to the lens assembly 220 along a direction parallel to the display surface of the display screen 310 (i.e., the first transmission path D1), and then, the fingerprint light refracted by the lens assembly 220 is reflected by the second reflecting element 230 and finally is transmitted to the light sensing element 240 along a direction parallel to the display surface of the display screen 310 (i.e., the second transmission path D2) to perform fingerprint imaging, so as to perform fingerprint identification.

This is disclosed passes through the secondary reflection with fingerprint light through two reflection element, the transmission path of secondary reflection all is on a parallel with the display surface of display screen 310, compare with the mode of fingerprint light perpendicular to display screen 310 transmission among the correlation technique, reduce the occupation to terminal 200 thickness direction (Z direction) by a wide margin, make this fingerprint module 200 of this disclosure under the prerequisite that does not increase terminal complete machine thickness (the ascending size in Z direction), because the secondary refraction of fingerprint light, make fingerprint module 200's object distance and image distance increase, the fingerprint identification distance promotes by a wide margin, the user points to only need in the fingerprint identification regional top of display screen, for the unsettled state of display surface of display screen 310 (with the display screen non-contact), can discern the fingerprint, realize remote fingerprint identification, and discern the precision manuscript, user experience effect is good.

In some embodiments, the fingerprint module 200 may include a housing for accommodating and supporting the first reflective element 210, the lens assembly 220, the second reflective element 230, and the photosensitive element 240. However, the disclosure is not limited thereto, and in a possible embodiment, a part of the components of the fingerprint module 200 may be located in the housing, for example, the first reflective element 210 and the second reflective element 230 of the fingerprint module 200 may be directly fixed to the middle frame by an adhesive, and the lens assembly 220 and the photosensitive element 240 are located in the housing. In another possible embodiment, the fingerprint module 200 may not include a housing, and the first reflective element 210, the lens assembly 220, the second reflective element 230 and the photosensitive element 240 may be directly mounted on the middle frame.

The first reflective element 210 may be a prism, such as a reflective prism. The reflective surface of the first reflective element 210 is used for reflecting the fingerprint light in the fingerprint area to change the transmission path of the fingerprint light, so that the fingerprint light is turned from a direction substantially perpendicular to the display screen 310 to a direction parallel to the display screen 310 for transmission, i.e. the fingerprint light is reflected by the reflective surface of the first reflective element 210 and then transmitted along the first transmission path D1.

For example, the reflective surface of the first reflective element 210 may be disposed toward the fingerprint identification area of the display screen 310 to receive the fingerprint light emitted by the finger located in the fingerprint area after the light is irradiated. Further, the reflection surface of the first reflection element 210 and the display surface of the display screen 310 have a first angle therebetween, for example, the first angle may be 30 to 60 degrees. Preferably, the first angle is 45 degrees, so that the fingerprint light reflected by the reflection surface of the first reflection element 210 is rotated by 90 degrees, i.e. perpendicular to the fingerprint light incident to the reflection surface of the first reflection element 210. Further, the center of the reflective surface of the first reflective element 210 and the center of the reflective surface of the second reflective element 230 are on the optical axis of the lens assembly 220.

In another example, the first reflective element 210 may include a light incident surface, a reflective surface and a light emitting surface. The light incident surface is disposed toward the fingerprint identification area of the display screen 310 to receive the fingerprint light emitted by the finger in the fingerprint area after being irradiated by the light, and the fingerprint light is reflected by the reflecting surface and emitted from the light emitting surface. For example, an included angle between the reflection surface for changing the transmission path of the fingerprint light and the light incident surface and the light emitting surface may be 45 degrees, so that the fingerprint light transmitted to the first reflection element 210 is reflected (total internal reflection) by the reflection surface by 90 degrees and transmitted to the lens assembly 220 along the first transmission path D1.

It should be noted that the first reflective element 210 is not limited to a prism, for example, the first reflective element 210 can be a mirror, a beam splitter, or any other element that can change the transmission path of the fingerprint light.

The lens assembly 220 is used for receiving the fingerprint light reflected by the first reflecting element 210, so as to converge the fingerprint light to the second reflecting element 230. Illustratively, the lens assembly 220 is located between the first reflective element 210 and the second reflective element 230. Further, the optical axis of lens assembly 220 may be parallel to the display surface of display screen 310. Compare in traditional fingerprint module, the mode of the optical axis perpendicular to display screen of lens can effectively reduce and occupy in the terminal 300 thickness direction to can provide more spaces for terminal 300 thickness direction. Lens assembly 220 may include one piece of lens and multiple pieces of lens, which may be, for example, a convex lens.

The second reflecting element 230 is used for reflecting the fingerprint light emitted from the lens assembly 220 and transmitting the reflected fingerprint light to the light sensing element 240 along the second transmission path D2. The reflecting surface of the second reflecting element 230 and the display surface of the display screen 310 form a third angle, and the third angle is 30-60 degrees. Preferably, the third angle is 45 degrees. The center of the reflective surface of the second reflective element 230 is located on the optical axis of the lens assembly 220 such that the fingerprint rays reflected by the reflective surface of the second reflective element 230 can pass along a second pass path D2 parallel to the display surface of the display screen 310. The included angle between the reflection surface of the second reflection element 230 and the reflection surface of the first reflection element 210 is a second angle, which may be 30-60 degrees, and preferably, the second angle is 45 degrees, so that the first transmission path D1 and the second transmission path D2 can be perpendicular to each other, that is, the fingerprint light passing through the second reflection element 210 is transmitted to the light sensing element 240 by 90 degrees.

In another example, the second reflective element 230 may include a light incident surface, a reflective surface and a light emitting surface. The light incident surface is disposed on the first transmission path D1, i.e. facing the lens assembly 220, to receive the fingerprint light emitted from the lens assembly 220.

For example, an included angle between the reflection surface of the second reflection element 230 for changing the transmission path of the fingerprint light and the light incident surface and the light emitting surface may be 45 degrees, so that the fingerprint light transmitted to the second reflection element 230 is reflected (total internal reflection) by the reflection surface to turn 90 degrees and is transmitted to the light sensing element 240 along the second transmission path D2.

For example, the second reflecting element 230 can be a reflecting prism, a mirror, a beam splitter or any other element that can change the transmission path of the fingerprint light.

The photosensitive element 240 is disposed on the second transfer path D2, and is used for receiving the fingerprint light reflected from the second reflecting element 230 and imaging the fingerprint for fingerprint identification. The light-sensing surface of the light-sensing element 240 faces the reflection surface of the second reflection element 230. For example, the light sensing element 240 may include a substrate, a fingerprint chip disposed on the substrate, and a flexible circuit board connected with the fingerprint chip, the flexible circuit board being connected with a main board of the terminal 300.

The center of the reflection surface of the fingerprint chip is opposite to the center of the reflection surface of the second reflection element 230, and the fingerprint chip receives the fingerprint light reflected by the second reflection element 230 and identifies the fingerprint light to acquire the fingerprint information of the fingerprint light.

Fingerprint light after the secondary reflection for, photosensitive element 240 lengthens to the distance of lens subassembly 220, and then makes the formation of image distance lengthen, and the fingerprint identification distance of fingerprint module 200 increases, thereby the finger need not to contact the screen and can carry out fingerprint identification, and the discernment precision improves.

In some embodiments, the fingerprint module 200 further includes a filter for filtering the fingerprint light to filter out unnecessary stray light. Illustratively, an optical filter may be located between the light sensing element 240 and the lens assembly 220, for example, the optical filter is located on the second transmission path D2, between the light sensing element 240 and the second reflecting element 230. But not limited thereto, the optical filter may also be located on the second transmission path D2, for example, the optical filter is located between the lens assembly 220 and the second reflection element 230, or the optical filter is located in the lens assembly, i.e., located between a plurality of lenses. In addition, the filter may be one sheet or a plurality of sheets.

According to another aspect of the present disclosure, a display assembly is provided, which includes a display screen 310 and the fingerprint module 200 of any of the embodiments of the first aspect, wherein the fingerprint module 200 is located below the display screen 310.

The display screen 310 includes a fingerprint identification area, which may be located in a lower-middle portion of the display screen 310 to facilitate easy access of a user's finger into the fingerprint identification area. The present disclosure is not limited thereto and the fingerprint recognition area may be located at an upper portion, a left side portion, or a right side portion of the display screen 310, or the entire display area of the display screen 310.

When the finger is located the fingerprint identification region on display screen 310, the light that display screen 310 sent shines the finger to acquire fingerprint light, the fingerprint light is imaged behind this disclosed fingerprint module 200, in order to carry out fingerprint identification.

The display assembly may further include a middle frame supporting the display screen 310, and the fingerprint module 200 is disposed on the middle frame. The display screen 310 may be an organic light emitting diode display screen, such as a flexible organic light emitting diode display screen or a rigid organic light emitting diode display screen.

In another example, the display screen 310 as a whole may also be attached to the back surface of the display screen 310 opposite to the display surface.

This disclosed display module sets up this disclosed fingerprint module 200 through the below at display screen 310, can carry out the secondary reflection to fingerprint light to improve the identification distance of fingerprint module, thereby the user finger need not to contact the display screen and can carry out fingerprint identification, and effectively reduces display module's thickness.

According to another aspect of the present disclosure, a terminal 300 is provided, where the terminal 300 includes a terminal body and the display component of the second aspect embodiment, and the display component is disposed on the terminal body. The terminal 300 may be an electronic device having a display function, such as a mobile phone, a tablet, a notebook computer, and a wearable device.

The terminal body may include a case as an external appearance, and the case protects internal components of the terminal. Taking a mobile phone as an example, the housing may be a middle frame of the mobile phone, and the middle frame is supported on the back of the display screen of the display assembly. Fingerprint module 200 is located between display screen and the center.

The terminal 300 provided by the present disclosure can realize remote fingerprint identification, that is, a user can perform fingerprint identification without touching the screen, that is, the finger is in a suspended state relative to the display surface of the display screen. In addition, through setting up this disclosed fingerprint module 200 in terminal 300 still can effectively reduce the occupation on terminal 300 thickness direction (Z direction) to can provide more spaces for terminal internal component, for example can provide more spaces for the inside battery of terminal, thereby can hold the battery of higher capacity, improve the duration of terminal.

It is understood that the term "plurality" in the present invention means two or more, and other terms are similar. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention.

It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A fingerprint module is arranged below a display screen of a terminal and is characterized in that,

the fingerprint module comprises a first reflecting element, a lens assembly, a second reflecting element and a photosensitive element;

wherein the first reflecting element is used for transmitting the fingerprint light rays to the lens component along a first transmission path after reflecting the fingerprint light rays,

the second reflecting element is used for reflecting the fingerprint light rays emitted by the lens assembly and then transmitting the fingerprint light rays to the photosensitive element along a second transmission path.

2. The fingerprint module of claim 1,

the first transmission path and the second transmission path are parallel to the display surface of the display screen.

3. The fingerprint module of claim 2,

the reflecting surface of the first reflecting element faces the fingerprint identification area of the display screen;

a third angle is formed between the reflecting surface of the second reflecting element and the display surface of the display screen, and the third angle is 30-60 degrees;

the lens assembly is positioned between the first reflective element and the second reflective element,

the light sensing surface of the light sensing element faces the reflecting surface of the second reflecting element.

4. The fingerprint module of claim 3,

the third angle is 45 degrees.

5. The fingerprint module of claim 3,

the first transfer path is perpendicular to the second transfer path.

6. The fingerprint module of claim 3,

an included angle between the reflecting surface of the first reflecting element and the display surface is a first angle, and the first angle is 30-60 degrees.

7. The fingerprint module of claim 6,

the first angle is 45 degrees.

8. The fingerprint module of claim 3,

an included angle between the reflecting surface of the second reflecting element and the reflecting surface of the first reflecting element is a second angle, and the second angle is 30-60 degrees.

9. The fingerprint module of claim 8,

the second angle is 45 degrees.

10. The fingerprint module of claim 3, wherein the fingerprint module further comprises:

and the optical filter is arranged between the photosensitive element and the second reflecting element.

11. The fingerprint module of any one of claims 1 to 10, further comprising:

the first reflecting element, the lens assembly, the second reflecting element and the photosensitive element are arranged in the shell.

12. A display assembly, comprising:

a display screen; and

the fingerprint module of any one of claims 1 to 11, the fingerprint module disposed below the display screen.

13. A terminal, comprising:

a terminal body; and

the display assembly of claim 12, the display assembly being disposed at the terminal body.