CN211123855U

CN211123855U - Electronic equipment

Info

Publication number: CN211123855U
Application number: CN202020017445.1U
Authority: CN
Inventors: 朱文龙; 林峰
Original assignee: Shenzhen Fushi Technology Co Ltd
Current assignee: Shenzhen Fushi Technology Co Ltd
Priority date: 2019-04-23
Filing date: 2020-01-03
Publication date: 2020-07-28
Anticipated expiration: 2030-01-03

Abstract

The application is applicable to the technical field of optics and electronics, and provides an electronic device, which comprises: a display device for displaying a picture; the cover plate is arranged on the display surface of the display device, the position of the cover plate corresponding to at least one side edge of the display device continuously extends outwards to form a part exceeding the display device, and the cover plate is provided with a sensing area contacted with an external object; one or more first light-emitting elements arranged on the part of the cover plate beyond the display device and used for emitting sensing light through the cover plate to irradiate the part of the external object, which is positioned outside the sensing area; and one or more second light-emitting elements arranged below the display device and used for emitting sensing light through the display device to irradiate the part of the external object, which is positioned outside the sensing area.

Description

Electronic equipment

Technical Field

The application belongs to the technical field of optics, and particularly relates to a display device assembly and electronic equipment.

Background

The existing electronic equipment often needs to set a functional module on a main viewing surface in order to realize multiple functions, for example: in order to wake up the electronic device using the fingerprint recognition function, a fingerprint recognition module is required to be arranged on the main viewing surface of the electronic device. However, in order not to affect the display function of the electronic device, these functional modules generally need to be separately disposed outside the display area of the main viewing surface of the electronic device, so as to occupy the display area of the electronic device, which affects the overall appearance of the main viewing surface of the electronic device.

SUMMERY OF THE UTILITY MODEL

The present application provides a display device assembly and an electronic apparatus to solve the above technical problems.

An embodiment of the present application provides an electronic device, which includes:

a display device for displaying a picture;

the cover plate is arranged on the display surface of the display device, the position of the cover plate corresponding to at least one side edge of the display device continuously extends outwards to form a part exceeding the display device, and the cover plate is provided with a sensing area contacted with an external object;

one or more first light-emitting elements arranged on the part of the cover plate beyond the display device and used for emitting sensing light through the cover plate to irradiate the part of the external object, which is positioned outside the sensing area;

one or more second light-emitting elements arranged below the display device and used for emitting sensing light through the display device to irradiate the part of the external object, which is positioned outside the sensing area; and

and the receiving unit is arranged below the display device and used for receiving the sensing light returned from the external object through the cover plate and the display device so as to obtain the fingerprint information of the external object.

In some embodiments, the sensing region is located within a projected area of the display device on the cover plate.

In some embodiments, the touch panel further includes a first film layer, and the first light emitting element emits the sensing light to a portion of an external object outside the sensing region through the first film layer and the cover plate.

In some embodiments, the first film layer is transparent to infrared or near infrared light.

In some embodiments, the first film layer has a transmittance of greater than or equal to 70% for infrared or near infrared light.

In some embodiments, the first film layer is disposed at a position corresponding to the first light emitting element in a portion of the cover plate beyond the display device.

In some embodiments, the display device further comprises a second film layer having optical properties of not transmitting visible light, the second film layer being disposed in a region of the cover plate beyond the display device where the first film layer is not disposed.

In some embodiments, the first film layer is disposed on the entire area of the cover plate beyond the portion of the display device.

In some embodiments, the first film layer also has optical properties that are opaque to visible light.

In some embodiments, the non-transmission of visible light means a transmission of less than or equal to 10% of visible light.

In certain embodiments, the first film layer is an infrared transmissive ink.

In some embodiments, the sensing light is infrared or near infrared light.

In certain embodiments, the infrared or near infrared has a wavelength in the range of 750 nanometers to 2000 nanometers.

In some embodiments, the first light emitting element and the display device do not overlap with each other in a direction perpendicular to a display surface of the display device.

In some embodiments, a projection area of the first light emitting element on the cover plate and a projection area of the display device on the cover plate do not intersect with each other.

In some embodiments, the sensing light enters the inside of the external object and then exits from the surface of the external object in contact with the sensing region.

In some embodiments, the sensing region is disposed proximate a bottom edge of the electronic device, and the at least one first light-emitting element is disposed between the sensing region and the bottom edge of the electronic device.

In some embodiments, the plurality of first light emitting elements are symmetrically distributed about a center of the sensing region.

In some embodiments, the plurality of second light emitting elements are symmetrically distributed about a center of the sensing region.

In some embodiments, the display device further comprises a receiving unit disposed below the display device for receiving the sensing light returned from the external object through the cover plate and the display device.

In some embodiments, the first light emitting element has a light emission angle greater than a light emission angle of the second light emitting element.

This application embodiment sets up the transmitting element through below display device and/or non-display area and is used for seeing through display device transmission receiving sensing light realizes the sensing function, need not occupy electronic equipment's the display area, is favorable to improving electronic equipment's screen proportion, promotes the whole impression of looking at electronic equipment main plane.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

Fig. 1 is a schematic front view of an electronic apparatus provided in an embodiment of the present application, where the electronic apparatus includes a sensing module located below a display device assembly.

Fig. 2 is a schematic structural diagram of the display device assembly and the sensing module in fig. 1.

Fig. 3 is a schematic structural diagram of the display device assembly and the sensing module according to a modified embodiment of the present application.

Fig. 4 is a schematic front view of an electronic device according to a modification of the present application.

Fig. 5 is a schematic structural diagram of the display device assembly and the sensing module according to a modified embodiment of the present application.

Fig. 6 is a schematic structural diagram of the display device assembly and the sensing module according to a modified embodiment of the present application.

Fig. 7 is a schematic structural diagram of the display device assembly and the sensing module according to a modified embodiment of the present application.

Fig. 8 is a schematic front view of an electronic device according to a modification of the present application.

Fig. 9 is a schematic structural diagram of the display device assembly and the sensing module in fig. 8.

Fig. 10 is a schematic structural diagram of the display device assembly and the sensor module according to a modified embodiment of the present application.

Fig. 11 is a schematic structural diagram of the display device assembly and the sensor module according to a modified embodiment of the present application.

Fig. 12 is a schematic structural diagram of the display device assembly and the sensor module according to a modified embodiment of the present application.

Fig. 13 is a schematic structural diagram of the display device assembly and the sensor module according to a modified embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any order or number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either mechanically or electrically or in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship or combination of two or more elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the present application, only the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repeat use is intended to provide a simplified and clear description of the present application and is not intended to suggest any particular relationship between the various embodiments and/or arrangements discussed. In addition, the various specific processes and materials provided in the following description of the present application are only examples of implementing the technical solutions of the present application, but one of ordinary skill in the art should recognize that the technical solutions of the present application can also be implemented by other processes and/or other materials not described below.

Further, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject technology can be practiced without one or more of the specific details, or with other structures, components, and so forth. In other instances, well-known structures or operations are not shown or described in detail to avoid obscuring the focus of the application.

One embodiment of the present application provides an electronic device 1, for example: mobile phones, notebook computers, tablet computers, touch interactive screens, doors, vehicles, robots, automatic numerical control machines, and the like. Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of a main view of the electronic device 1, and fig. 2 is a schematic structural diagram of a left view of the electronic device 1 in fig. 1, which is viewed from the left side to the right along a horizontal direction. The electronic apparatus 1 comprises a display device assembly 11. The display device assembly 11 includes a cover plate 10 and a display device 12. The cover plate 10 is disposed on a side surface of the display device 12 for displaying light emission.

The cover plate 10 may be an outermost layer of the electronic device 1, and is disposed on a surface of the display device 12 on a side for displaying light, so as to protect the display device 12. The cover plate 10 includes oppositely disposed upper and

lower surfaces

100 and 102. The upper surface 100 faces the outside of the electronic device 1, and may be an outer surface of the electronic device 1. The lower surface 102 faces the display device 12 located below the cover plate 10. The upper surface 100 of the cover plate 10 may also be used to contact the external object, providing a sensing interface for sensing of the external object. The cover plate 10 may be made of a transparent hard material. The material of the cover plate 10 may be, but is not limited to, glass, sapphire, plastic, etc.

The Display device 12 includes a Display Panel 120, the Display Panel 120 is used for displaying images, a small portion of space for wiring is omitted on the Display surface of the Display Panel 120, and substantially all of the space can be used for displaying images, and can be defined as the Display area 104 of the electronic device 1. the Display Panel 120 can be, but is not limited to, a liquid crystal Display Panel (L iquid Display Panel, L CD Panel), an Organic light emitting Diode Display Panel (Organic L bright emitting Diode, O L ED Display Panel), a Micro light emitting Diode Panel (Micro-L ED Display Panel), or a Mini light emitting Diode Display Panel (Mini-L ED Display Panel). the Display Panel 120 is disposed on the lower surface 102 of the cover plate 10, can be in direct contact with the lower surface 102 of the cover plate 10, can also be spaced a predetermined distance from the lower surface 102 of the cover plate 10. for a non-self-luminous Display Panel 120, the Display Panel 12 can also include the Display module 122, and the Display Panel 120 can be implemented as a backlight module 120.

The cover plate 10 has a shape corresponding to the display panel 120. The size of the cover plate 10 is larger than that of the display panel 120 so that the cover plate 10 can cover the entire display panel 120. The cover plate 10 extends outward beyond the display device 12 at a position corresponding to at least one side edge of the display device 12. In other words, the cover plate 10 extends outward from the projection of at least one side edge of the display device 12 on the cover plate 10 to form the portion beyond the display device 12. The portion of the cover 10 beyond the edge of the display device 12, which cannot be displayed due to the absence of the display panel 120, can be defined as the non-display area 106 of the electronic apparatus 1. It is understood that the positions of the cover plate 10 corresponding to the peripheral edges of the display device 12 may extend outward to form a portion beyond the display device 12, i.e. the peripheral edges of the electronic device 1 may be formed with the non-display area 106.

The display device assembly 11 further includes a first film layer 110. The first film layer 110 is disposed on at least a portion of the surface of the cover plate 10 beyond the display device 12, i.e., on at least a portion of the non-display area 106 of the cover plate 10, and may be the upper surface 100 or the lower surface 102 of the corresponding portion of the cover plate 10. The first film layer 110 has an optical characteristic of transmitting infrared light or near infrared light. Specifically, the first film layer 110 may transmit infrared or near infrared light, and the transmittance of the first film layer 110 to infrared or near infrared light is greater than or equal to 70%. The infrared or near infrared wavelength range is 750 nanometers (nm) to 2000 nm. The first film layer 110 may be disposed on the entire area of the cover plate 10 beyond the portion of the display device 12, i.e., the entire non-display area 106 of the cover plate 10. The first film layer 110 may also be disposed on one or more areas of the cover sheet 10 that extend beyond the display device 12. For example: the first film layer 110 is disposed in one or more regions of the cover plate 10 beyond the display device 12 that are required for emitting sensing light to an external object, i.e., one or more regions of the cover plate 10 that are required for emitting sensing light to an external object in the non-display region 106. It is understood that the first film layer 110 may also have the optical property of not transmitting visible light. The optical characteristic of the opaque visible light may be that the opaque visible light has a high reflectivity or can absorb visible light well, so that external visible light cannot enter the lower portion of the cover plate 10 through the first film layer 110, the visible light coming from the lower portion of the cover plate 10 cannot be transmitted, and the region of the cover plate 10 where the first film layer 110 is disposed is in a non-transparent state. Specifically, the first film layer 110 is not transparent to visible light, and the transmittance of the first film layer 110 to visible light may be less than or equal to 10%. In this embodiment, the first film layer 110 may be, but is not limited to, an infrared transmissive ink.

The display assembly 11 may also include a second film layer 112. The second film layer 112 may have only optical characteristics that are opaque to visible light. If the first film layer 110 is disposed on a portion of the cover plate 10 extending beyond the display device 12, the second film layer 112 may be disposed on other portions of the cover plate 10 extending beyond the display device 12 where the first film layer 110 is not disposed.

The electronic device 1 further comprises a sensing module 14. The sensing module 14 is disposed at least partially under the display device 12 to sense an external object through the display device 12 and the cover plate 10. The electronic device 1 can correspondingly execute corresponding functions according to the sensing result of the sensing module 14. The corresponding function includes but is not limited to unlocking after identifying the identity of the external object, paying, starting a preset application program, or acquiring physical function parameters such as heart rate and blood oxygen content of the external object to judge any one or more combinations of emotion and health condition of the external object.

The sensing module 14 emits sensing light through at least a portion of the display device assembly 11 to an external object. The sensing light is reflected back by an external object and then received by the sensing module 14 through the display device 12 for sensing. The sensing light returned through the external object may carry biometric information of the external object. In this embodiment, the external object is exemplified as a finger of a user, and the biometric information is fingerprint information of the user. The finger has the partial surface of fingerprint line and contacts with apron 10, sensing module 14 for example is the fingerprint identification module, can see through apron 10 at least and send sensing light to finger to obtain fingerprint information through the sensing light that the sensing was turned back through the finger and discerned. Here, the sensing light returned by the finger refers to the sensing light which is emitted from the surface of the finger with the fingerprint grain and returned after entering the inside of the finger through diffuse reflection and propagation. It is understood that, in other modified embodiments, the sensing light returned back through the finger may also refer to the sensing light reflected by the surface of the finger with the fingerprint texture.

The sensing module 14 includes an Emitting unit 140, the Emitting unit 140 is used for Emitting a sensing light to irradiate the finger for sensing, the Emitting unit 140 includes one or more light Emitting elements 146, the light Emitting elements 146 may be, but are not limited to, any one or a combination of more of light Emitting diodes (L high Emitting diodes, L EDs), Organic light Emitting diodes (Organic L high Emitting diodes, O L EDs), Vertical Cavity Surface Emitting lasers (Vertical Cavity Surface Emitting L ases, VCSE L), laser diodes (L ash diodes, L D), the light Emitting elements 146 are used for Emitting a sensing light to the finger, and the sensing light may be infrared light or near infrared light.

The light emitting elements 146 are disposed on the lower surface 102 of the portion of the cover plate 10 that extends beyond the display device 12, i.e., in the non-display area 106 of the cover plate 10. The sensing light emitted from the light emitting element 146 can be transmitted through the first film layer 110 disposed on the portion of the cover plate 10 beyond the display device 12 to irradiate the finger. Correspondingly, the first film layer 110 is disposed at least at a position of the cover plate 10 beyond the display device 12 corresponding to the light emitting element 146. The light emitting surface of the light emitting element 146 faces the lower surface 102 of the portion of the cover plate 10 beyond the display device 12. It is understood that, as shown in fig. 3, in other modified embodiments, the light emitting surface of the light emitting element 146 may also irradiate at a predetermined angle θ with the upper surface 100 or the lower surface 102 of the cover plate 10, and the predetermined angle θ is in a range greater than 0 degrees and less than or equal to 75 degrees.

Because the light emitting elements 146 are disposed on the portion of the cover plate 10 beyond the display device 12, the light emitting elements 146 are located on the side of the display panel 120, including but not limited to the side above, the side below, and the front side, there is a predetermined distance L between the light emitting elements 146 and the edge of the display area 104 on the display panel 120 to allow a receiving space for the traces and the control chip of the display panel 120, the predetermined distance L is in the range of 2-5 millimeters (mm).

The sensing module 14 further includes a receiving unit 142. The receiving unit 142 is disposed below the display device 12 to receive the sensing light returned by the finger through the display device 12 and the cover plate 10. Therefore, the receiving unit 142 does not need to occupy the area of the main viewing surface of the electronic device 1, which is beneficial to improving the screen occupation ratio of the electronic device 1. In this embodiment, the sensing light returned by the finger refers to the sensing light emitted from the surface of the finger with the fingerprint pattern and returned by the sensing light after being diffused and reflected inside the finger. Since the receiving unit 142 is disposed below the display device 12, the projection of the receiving unit 142 on the display panel 120 and the cover 10 is located in the display area 104 of the electronic apparatus 1. The area where the cover plate 10 intersects with the light path of the receiving unit 142 for receiving the sensing light is defined as a sensing region 105. The finger contacts the sensing region 105 on the cover 10, and the sensing light emitted from the finger is received by the receiving unit 142 through the cover 10 and the display device 12 in the sensing region 105 for sensing. It is understood that the range size of the sensing region 105 is determined by the field angle range of the receiving unit 142, and is not completely equal to the size of the receiving unit 142. The sensing region 105 may not face the receiving unit 142, and the sensing light transmitted from the sensing region 105 may be guided to the receiving unit 142 by disposing an optical element. The position of the display panel 120 corresponding to the sensing region 105 of the cover plate 10 is defined as an indication region 123, for example: the indication area 123 is a projection area of the sensing area 105 on the display panel 120. Upon sensing, the display panel 120 may display a pattern of finger fingerprints on the indication area 123 to prompt the user to sense the location of the area 105. The user presses a finger into the sensing region 105 on the cover plate 10 for sensing of fingerprint recognition according to the prompt of the indication region 123. It is understood that in other variations, the indication area 123 may not directly face the sensing area 105. For example: the indication region 123 may be closer to one of the light emitting elements 146 emitting the sensing light than the sensing region 105, so as to guide the user to press a finger on the cover plate at a position closer to the light emitting element 146, so that the sensing light emitted by the light emitting element 146 can be incident from a part of the finger located outside the sensing region 105, and the light flux of the sensing light entering the finger is increased.

The sensing light emitted from the light emitting element 146 irradiates an external object, such as: a finger located outside of sensing region 105. For example: the finger is in contact with the upper surface 100 of the cover plate 10 but beyond the surface of the sensing region 105, or the finger is located outside the sensing region 105 and is not in contact with the upper surface 100 of the cover plate 10. The sensing light enters the inside of the finger from the portion of the finger outside the sensing region 105, then propagates to the sensing region 105 in a form of diffuse reflection, and exits at the surface of the finger in contact with the sensing region 105, and then is received by the receiving unit 142 through the display device 12 for sensing.

When the sensing light is emitted from the surface of the finger, the concave-convex grains on the surface of the finger and the surface of the sensing area 105 are in different contact conditions to form corresponding grain images. For example, the convex ridges of the fingerprint directly contact the surface of the sensing region 105, so that the sensing light emitted from the ridges of the fingerprint directly enters the display device 12 to form a bright pattern with a large transmitted light flux. The concave valleys in the fingerprint have a gap with the surface of the sensing region 105, so that the light flux of the sensing light emitted from the valleys and capable of penetrating through the display device 12 is reduced, and a dark texture with less emitted light flux is formed. Therefore, when the sensing light is emitted from the inside of the finger and then passes through the display device 12, a light and dark stripe image corresponding to the fingerprint stripe is formed. The receiving unit 142 receives sensing light emitted from the inside of the finger through the surface of the finger in contact with the sensing region 105 to form the fingerprint image for fingerprint recognition sensing. Since different light paths are used for emitting and receiving the sensing light respectively, stray light reflected by each layer of the display device 12 when the sensing light is emitted will not be received by the receiving unit 142 to affect sensing, and sensing accuracy is improved.

As shown in fig. 1 and fig. 2, in the present embodiment, the electronic device 1 is exemplified as a mobile phone, and the sensing region 105 is disposed in the display region 104 near the bottom edge of the mobile phone. The sensing region 105 may be aligned with the midpoint of the bottom edge of the handset. The portion of the cover 10 corresponding to the bottom edge of the phone beyond the display 12 forms what is commonly referred to in the art as a "chin" portion that is not illuminated from the front of the phone, i.e., a non-display area 106 at the bottom edge of the phone. The cover plate 10 may also extend outward to form a portion beyond the display panel 120 at other edges of the corresponding mobile phone, i.e., the peripheral edges of the mobile phone may form corresponding non-display areas 106. The light emitting elements 146 are disposed in the cover plate 10 corresponding to the non-display area 106 at the bottom edge of the mobile phone. The light emitting element 146 may be one or more. If there is one light emitting device 146, the position of the light emitting device 146 corresponds to the sensing region 105, i.e. is located between the sensing region 105 and the bottom edge of the mobile phone, and is aligned with the midpoint of the bottom edge of the mobile phone. If the number of the light emitting devices 146 is even, the light emitting devices 146 are symmetrically distributed about the center of the sensing region 105.

As shown in fig. 4, if the number of the light emitting elements 146 is odd, the light emitting elements 146 are symmetrically distributed about the center of the sensing region 105 except for the light emitting elements 146 aligned with the middle point of the bottom edge of the mobile phone. Therefore, higher sensing light illuminance can be obtained for the case that the sensing region 105 is pressed by the finger from the left, the middle and the right respectively.

It is understood that, in other modified embodiments, the light emitting elements 146 disposed in the non-display region 106 at the bottom edge of the mobile phone may not follow the arrangement rule of being aligned with the middle point of the bottom edge of the mobile phone or being symmetrical about the sensing region 105, and it is only required that the sensing light emitted by the light emitting elements 146 disposed in the non-display region 106 can illuminate the portion of the finger outside the sensing region 105. the light emitting elements 146 may be L ED light sources emitting infrared or near infrared light.

It is understood that the first film layer 110 may be disposed corresponding to the light emitting element 146, i.e. corresponding to the position of the light emitting element 146, and the first film layer 110 is disposed on the surface of the cover plate 10 beyond the display device 12. The sensing light emitted by the light emitting device 146 is transmitted through the first film layer 110 and the cover plate 10 and then irradiates the portion of the finger outside the sensing region 105. The second film layer 112 may be disposed on the cover plate 10 beyond the portion of the display device 12 where the light emitting elements 146 are not disposed.

As shown in fig. 5, in other modified embodiments, the first film layer 110 may also be disposed on the entire area of the cover plate 10 beyond the display device 12, i.e., the entire non-display area 106 of the cover plate 10.

As shown in fig. 6, in another modified embodiment, the whole area of the cover plate 10 beyond the display device 12, that is, the whole non-display area 106 of the cover plate 10 may not be provided with the first film layer 110 and/or the second film layer 112, and the sensing light emitted by the light emitting element 146 irradiates the portion of the finger outside the sensing region 105 through the cover plate 10.

As shown in fig. 7, in another modified embodiment, the emission unit 140 includes one or more first light emitting elements 1461 and one or more second light emitting elements 1462. The first light emitting element 1461 is disposed below a portion of the cover plate 10 beyond the display device 12, i.e., below the non-display region 106 of the cover plate 10. The second light emitting element 1462 is disposed below the display device 12, i.e., the projection of the second light emitting element 1462 on the cover plate 10 is located in the display region 104. The second light emitting element 1462 emits sensing light through the display device 12 to a portion of the finger outside the sensing region 105. Alternatively, the portion of the second light emitting element 1462 that illuminates the finger and the portion of the first light emitting element 1461 that illuminates the finger may be located on two opposite sides of the sensing region 105. For example, the sensing light emitted by the first light emitting element 1461 irradiates a portion of the finger between the sensing region 105 and the first light emitting element 1461, and the sensing light emitted by the second light emitting element 1462 irradiates a portion of the finger corresponding to a side edge of the sensing region 105 farthest from the first light emitting element 1461. Correspondingly, the projection of the second light emitting element 1462 on the cover plate 10 is located on the side of the sensing region 105 farthest from the first light emitting element 1461. The projection of the second light emitting element 1462 on the cover plate 10 may be distributed symmetrically with the first light emitting element 1461 about the center of the sensing region 105. The light emission angle of the first light emitting element 1461 is larger than the light emission angle of the second light emitting element 1462. Since the finger tip protrudes from the sensing region 105 to a smaller portion of the display region 104 outside the sensing region 105, the second light emitting element 1462 with a smaller light emitting angle can easily prevent the emitted sensing light from entering the sensing region 105 and causing interference. It is understood that the angle of the light beam emitted by the second light emitting element 1462 can be adjusted to be within the range of the preset angle by disposing the collimating element 1463 on the light emitting path of the second light emitting element 1462.

It is understood that, as shown in fig. 8 and fig. 9, in other modified embodiments, the one or more light emitting elements 146 included in the emitting unit 140 may be all disposed below the display device 12, that is, the projections of the light emitting elements 146 on the cover plate 10 are all located in the display area 104, so as to emit the sensing light through the display device 12 to the portion of the finger located outside the sensing region 105. Optionally, if there are a plurality of light emitting devices 146, the light emitting devices 146 are symmetrically distributed about the center of the sensing region 105. Therefore, the area of the cover plate 10 beyond the display device 12 can be further reduced, i.e. the non-display area 106 of the electronic device 1 is further reduced or even eliminated, and the screen occupation ratio of the electronic device 1 is improved.

The light emitting angles of the plurality of light emitting elements 146 may be the same. The light emitting angles of the light emitting elements 146 may also be different, such as: closest to the electronic device 1, for example: the light emitting elements 146 on the bottom edge of the handset have a larger light emitting angle. Since the finger generally extends from the bottom of the electronic device 1 for fingerprint sensing, the portion of the bottom edge of the electronic device 1 corresponding to the finger outside the sensing region 105 is significantly larger than the portion of the finger outside the sensing region 105 corresponding to the other position.

The light emitting surfaces of the light emitting elements 146 under the display device 12 can be tightly combined with the bottom of the display device 12, or the bottom of the backlight module 122. A predetermined distance is provided between the light emitting surfaces of the light emitting elements 146 under the display device 12 and the bottom of the display device 12.

It will be appreciated that the display assembly 11 also includes a support plate 16, as shown in fig. 10. The support plate 16 is disposed under the display device 12, and serves to support the display device 12 and reinforce the overall strength of the display device 12. The support plate 16 may be a hard metal plate material such as: and (4) glue iron. The supporting plate 16 is provided with light-transmitting through holes 160 at positions corresponding to the light-emitting element 146 and the receiving unit 142. The sensing light emitted by the light emitting device 146 passes through the light transmitting through hole 160 and then irradiates the portion of the finger outside the sensing region 105 through the display device 12. The receiving unit 142 receives the sensing light emitted from the sensing region 105 through the light-transmitting through hole 160 for fingerprint sensing.

The light emitting elements 146 and the receiving units 142 can be closely attached to the bottom of the display device 12 through the light-transmitting through holes 160, and can also be disposed below the supporting plate 16 and aligned with the corresponding light-transmitting through holes 160. By adjusting the positions of the light-transmitting through holes 160 and the light-emitting elements 146 relative to the sensing region 105 and adjusting the size of the openings of the light-transmitting through holes 160, the relative positional relationship between the illumination area of the sensing light on the display panel 120 and the sensing region 105 can be flexibly controlled, for example: the entire sensing region 105 is illuminated, a portion of the sensing region 105 is illuminated, or regions outside the sensing region 105 are illuminated to implement different sensing regimes corresponding to various illumination conditions.

The light emitting element 146 and the receiving unit 142 may be supported by other support structures within the electronic device 1, such as: the cell phone middle frame is arranged below the supporting plate 16. As shown in fig. 11, the light emitting element 146 and/or the receiving unit 142 may also be fixed at a position corresponding to the light-transmitting through hole 160 at the bottom of the supporting plate 16 through the supporting member 17.

It is understood that in other modified embodiments, the sensing light emitted by the light emitting element 146 may be irradiated to an external object, such as: the finger, which is located outside the sensing region 105, may also illuminate a portion of the external object located on a region occupying a predetermined area ratio within the sensing region 105. The sensing light enters the inside of the external object, then exits from a portion of the sensing region 105 that is not irradiated by the sensing light, and is received by the receiving unit 142 through the display device 12 for sensing.

It is understood that, as shown in fig. 12, in other modified embodiments, a buffer 18 may be disposed between the light emitting element 146 and the receiving unit 142 and the bottom of the display device 12 or the bottom of the supporting plate 16. The buffer 18 may be a gasket made of a soft material for buffering the contact between the light emitting device 146 and the receiving unit 142 and the bottom of the display device 12 or the supporting plate 16, so as to reduce the damage caused by the collision between the light emitting device 146 and the receiving unit 142 and the display device 12 or the supporting plate 16.

In the present embodiment, as shown in fig. 2, the receiving unit 142 includes a lens 143 and an image sensor 145. The lens 143 focuses the reflected sensing light on the image sensor 145 to form a fingerprint image for fingerprint recognition.

It is understood that, in other modified embodiments, the receiving unit 142 may also perform other processing on the received sensing light to finally realize the function of comparison and identification, which is not limited in this application.

It is understood that, as shown in fig. 13, in other modified embodiments, the transmitting unit 140 is disposed below the display device 12. The emission unit 140 emits sensing light to irradiate the external object. The receiving unit 142 is disposed under a portion of the cover plate 10 beyond the display device 12. The receiving unit 142 receives the sensing light returned by the external object for sensing. The sensing light emitted from the emission unit 140 may be irradiated to the sensing region 105 where the external object is in contact with the cover plate 10, or may be irradiated to a portion where the external object is not in contact with the cover plate 10. The sensing light may be reflected directly at the surface of the external object to return to the receiving unit 142, as shown by the dashed line in fig. 13. The sensing light may be light that enters the inside of the external object and then exits from the surface of the external object to return to the receiving unit 142, as shown by the solid line in fig. 13. A portion of the receiving unit 142 where the field angle range is located in the display area 104 may serve as the sensing region 105 of the external object. The emission unit 140 may illuminate a surface portion of an external object within the sensing region 105 or illuminate another portion of the external object outside the sensing region 105.

Electronic equipment 1 is through setting up the sensing module 14 that can launch and/or receive sensing light below display device 12 in order to realize original sensing function in display area 104 of display device 12, need not occupy electronic equipment 1's display area 104 area, is favorable to improving electronic equipment 1's screen ratio, promotes the whole impression of electronic equipment 1 main view face. In addition, the sensing module 14 reasonably sets the light emitting area and the light emitting period of the light emitting element 146 to form an area with non-uniform illuminance distribution in the sensing area 105, so that the luminous fluxes of the sensing light reflected back by different parts of the external object have obvious differences, a clear bright and dark image with high contrast can be formed, and the sensing accuracy is improved.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the present application, and any modifications, equivalents and improvements made within the spirit and principle of the present application are intended to be included within the scope of the present application.

Claims

1. An electronic device, comprising:

a display device for displaying a picture;

one or more second light-emitting elements, disposed below the display area of the display device, for emitting sensing light through the display area of the display device to illuminate a portion of the external object outside the sensing area; and

2. The electronic device of claim 1, wherein: the sensing region is located in a projection region of a display region of the display device on the cover plate.

3. The electronic device of claim 1, wherein: the first light-emitting element emits the sensing light to the part of an external object outside the sensing region through the first film layer and the cover plate.

4. The electronic device of claim 3, wherein: the transmittance of the first film layer to the sensing light is greater than or equal to 70%, and the transmittance of the first film layer to visible light is less than 10%.

5. The electronic device of claim 3, wherein: the first film layer is disposed at a position corresponding to the first light emitting element in a portion of the cover plate beyond the display device.

6. The electronic device of claim 5, wherein: the display device further comprises a second film layer which has optical characteristics of not transmitting visible light, wherein the second film layer is arranged in a region, in which the first film layer is not arranged, of the part of the cover plate, which exceeds the display device.

7. The electronic device of claim 3, wherein: the first film layer is disposed on the entire area of the cover plate beyond the display device portion.

8. The electronic device of claim 3, wherein: the sensing light is infrared or near-infrared light, the wavelength range of the infrared or near-infrared light is 750 nanometers to 2000 nanometers, and the first film layer is infrared transmission ink.

9. The electronic device of claim 1, wherein: the sensing light enters the interior of the external object and then is emitted from the surface of the external object, which is in contact with the sensing region.

10. The electronic device of claim 1, wherein: the light emitting angle of the first light emitting element is larger than that of the second light emitting element.