CN110796070B

CN110796070B - Display screen assembly and electronic equipment for identifying fingerprints under screen

Info

Publication number: CN110796070B
Application number: CN201911031814.0A
Authority: CN
Inventors: 贾玉虎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2021-05-04
Anticipated expiration: 2039-10-28
Also published as: CN110796070A

Abstract

The application provides fingerprint identification electronic equipment under screen, including the display screen subassembly, include: a display panel including a fingerprint detection area; a light emitting module including a Mini LED (Mini-LED) array, the Mini-LED array including a visible light LED array and at least one invisible light LED, the at least one invisible light LED being configured to emit a detection signal to the fingerprint detection area of the display panel, a transmittance of a light signal emitted by the invisible light LED when passing through the light emitting module being greater than a transmittance of a light signal emitted by the visible light LED when passing through the light emitting module; and the fingerprint module is formed on one side of the light-emitting module, which is far away from the display panel, and is used for receiving detection signals which penetrate through the display panel and the light-emitting module after being reflected by fingers from the fingerprint detection area and generating fingerprint information according to the received detection signals. A display screen assembly is also provided.

Description

Display screen assembly and electronic equipment for identifying fingerprints under screen

Technical Field

The application relates to the technical field of electronics, concretely relates to fingerprint identification electronic equipment under display screen subassembly and screen.

Background

At present, the under-screen fingerprint recognition is mainly applied to an organic light-emitting diode (OLED) screen, and the principle is as follows: the fingerprint identification module under the OLED screen utilizes the light transmission characteristic that OLED screen itself possessed, receives the reverberation detection fingerprint that forms behind the finger reflection that OLED screen self sent. However, since the light emitting principle and the specific structure of a Liquid Crystal Display (LCD) panel or a similar LCD panel are different from those of an OLED panel, the LCD panel or a light emitting module similar to the LCD panel has opacity. Therefore, the OLED under-screen fingerprint identification scheme is not applicable to LCD screens or similar LCD screens. Therefore, how to realize the under-screen optical fingerprint identification of the LCD screen or the similar LCD screen is a technical problem which needs to be solved urgently in the field.

Content of application

The application provides a can realize optical fingerprint identification's under screen display screen subassembly and screen fingerprint identification electronic equipment under the screen of LCD screen or similar screen.

The application provides fingerprint identification electronic equipment under screen, including the display screen subassembly, the display screen subassembly includes: a display panel including a fingerprint detection area; the light-emitting module comprises a Mini-LED (Mini-LED) array, the Mini-LED array comprises a visible light LED array and at least one invisible light LED, the at least one invisible light LED is used for sending a detection signal to the fingerprint detection area of the display panel, and the penetration rate of a light signal sent by the invisible light LED when passing through the light-emitting module is greater than that of a light signal sent by the visible light LED when passing through the light-emitting module; and the fingerprint module is formed on one side, away from the display panel, of the light-emitting module, and is used for receiving detection signals which penetrate through the display panel and the light-emitting module after being reflected by fingers in the fingerprint detection area and generating fingerprint information according to the received detection signals.

The present application further provides a display screen assembly, including: a display panel including a fingerprint detection area; the light-emitting module comprises a Mini-LED (Mini-LED) array, the Mini-LED array comprises a visible light LED array and at least one invisible light LED, the at least one invisible light LED is used for sending a detection signal to the fingerprint detection area of the display panel, and the penetration rate of a light signal sent by the invisible light LED when passing through the light-emitting module is greater than that of a light signal sent by the visible light LED when passing through the light-emitting module; and the fingerprint module is formed on one side, away from the display panel, of the light-emitting module, and is used for receiving detection signals which penetrate through the display panel and the light-emitting module after being reflected by fingers in the fingerprint detection area and generating fingerprint information according to the received detection signals.

The electronic equipment and the display screen component for identifying the fingerprint under the screen comprise a Mini-LED array, wherein the Mini-LED array comprises a visible light LED array and at least one invisible light LED, and the penetration rate of optical signals sent by the at least one invisible light LED when passing through the light-emitting module is greater than that of optical signals sent by the visible light LED when passing through the light-emitting module, so that the optical signals sent by the at least one invisible light LED can penetrate through the display panel and the light-emitting module to reach the fingerprint module after being reflected by a finger from the fingerprint detection area, and the optical fingerprint identification under the LCD screen can be realized; and, the detection signal that at least one invisible light LED312 of this application sent is not sheltered from by the optical module, can reach the fingerprint module, so, can set up the fingerprint module and be in orthographic projection on the display panel falls into in display panel's the display area, display panel need not leave non-display area and sets up the fingerprint module with corresponding to make display panel can realize full screen display.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device for identifying fingerprints under a screen according to an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of a display screen assembly of the underscreen fingerprint recognition electronic device provided in FIG. 1 along line II-II.

Fig. 3 is an enlarged schematic view of the portion III in fig. 2.

Fig. 4 is a schematic layout diagram of a Mini-LED array of the electronic device for identifying fingerprints under a screen according to an embodiment of the present application.

Fig. 5 is a schematic layout diagram of a Mini-LED array of the electronic device for identifying fingerprints under a screen according to an embodiment of the present application.

Fig. 6 is a schematic layout diagram of a Mini-LED array of the electronic device for identifying fingerprints under a screen according to an embodiment of the present application.

Fig. 7 is a schematic layout diagram of a Mini-LED array of the electronic device for identifying fingerprints under a screen according to an embodiment of the present application.

Fig. 8 is a schematic diagram of a Mini-LED array of an electronic device for underscreen fingerprint identification in which a plurality of invisible LEDs are partially turned on according to an embodiment of the present disclosure.

FIG. 9 is a flow chart of a step command stored in a program provided by an embodiment of the present application.

FIG. 10 is a flow chart of a step command stored in a program provided by an embodiment of the present application.

FIG. 11 is a flow chart of a step command stored in a program provided by an embodiment of the present application.

FIG. 12 is a flow chart of a step command stored in a program provided by an embodiment of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood, 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.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The embodiments of the present application can be applied to fingerprint systems, including but not limited to optical, ultrasonic or other fingerprint identification systems and medical diagnostic products based on optical, ultrasonic or other fingerprint imaging, and the embodiments of the present application are only described by way of example, but should not be construed as limiting the embodiments of the present application, and the embodiments of the present application are also applicable to other systems using optical, ultrasonic or other imaging technologies, and the like.

The technical solution of the embodiment of the present application may perform other biometric identification, for example, living body identification, besides fingerprint identification, which is not limited in the embodiment of the present application.

The technical scheme of the embodiment of the application can be applied to various under-screen fingerprint identification electronic devices, and more particularly, can be applied to under-screen fingerprint identification electronic devices with display screens. For example, portable or mobile computing devices such as smart phones, notebook computers, tablet computers, and game devices, and other electronic devices for identifying fingerprints under a screen, such as electronic databases, automobiles, and Automatic Teller Machines (ATMs), but the present invention is not limited thereto.

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that, for convenience of description, like reference numerals denote like parts in the embodiments of the present application, and a detailed description of the like parts is omitted in different embodiments for the sake of brevity.

It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application and the overall thickness, length, width and other dimensions of the underscreen fingerprint module shown in the drawings are only exemplary and should not be construed as limiting the present application in any way.

Referring to fig. 1 to 3, an electronic device 1 for identifying fingerprints under a screen according to a first embodiment of the present application includes a display screen assembly 200 and a housing 300, wherein the display screen assembly 200 is accommodated in the housing 300.

The display screen assembly 200 includes a display panel 20, a light emitting module 30 and a fingerprint module 40. The display panel 20 includes a fingerprint detection area 203; the light emitting module 30 includes a Mini LED (Mini-LED) array 31, the Mini-LED array 31 includes a visible light LED311 array and at least one invisible light LED312, and a transmittance of a light signal emitted by the invisible light LED312 when passing through the light emitting module 30 is greater than a transmittance of a light signal emitted by the visible light LED311 when passing through the light emitting module 30. The fingerprint module 40 is formed on a side of the light emitting module 30 away from the display panel 20. The at least one invisible light LED312 is configured to send a detection signal to the fingerprint detection area 203 of the display panel 20, and the fingerprint module 40 is configured to receive the detection signal reflected by a finger from the fingerprint detection area 203 and penetrating through the display panel 20 and the light emitting module 30, and generate fingerprint information according to the received detection signal.

In one embodiment, the display panel 20 includes a display area 201. The fingerprint module 40 is in orthographic projection on the display panel 20 falls into the display area 202 of the display panel 20, the fingerprint module 40 with the fingerprint detection area 203 corresponds the setting.

In this application, the Mini-LED array 31 comprises at least one invisible LED312, can emit invisible light to irradiate the finger, and because the penetration rate of the optical signal emitted by the invisible light LED312 when passing through the light-emitting module 30 is greater than the penetration rate of the optical signal emitted by the visible light LED311 when passing through the light-emitting module 30, so that the invisible light reflected by the finger can penetrate the light emitting module to be received by the fingerprint module 40 on the back side of the light emitting module 30, and the collection of the fingerprint image is realized, that is, the detection signal emitted from the invisible LED312 is not blocked by the light emitting module 30, so that the fingerprint detection area 203 of the display panel 20 can be reached, and further reflected to the receiver 41 to generate fingerprint information of the finger, implementing the off-screen fingerprint recognition, the interference of visible light to fingerprint identification can be avoided by adopting the invisible light LED 312; the visible light LEDs 311 in the Mini-LED array 31 cannot penetrate through the light emitting module to reach the fingerprint module 40, and the visible light LEDs 311 in the Mini-LED array 31 are emitted from the display panel 20, so that the screen of the display panel 20 has certain brightness, and the invisible light LEDs 312 do not affect the displayed image; and, the detection signal that at least one invisible light LED312 of this application sent is not sheltered from by light-emitting module 30, can reach fingerprint module 40, so, can set up fingerprint module 40 and be in orthographic projection on display panel 20 falls into in display panel 20's the display area, display panel 20 need not reserve non-display area and set up the fingerprint module with corresponding, for example need not like reserving the fingerprint button on display panel 20 among the prior art to make display panel 20 can realize full screen display, promptly display panel 20's display area can expand basically the whole front of fingerprint identification electronic equipment 1 under the screen.

The fingerprint detection area 203 may be a fixed position of the display area on the display panel 20, or may extend to the entire display area of the liquid crystal panel. Correspondingly, the number of the fingerprint modules 40 may be one or more; when being a plurality of, a plurality of fingerprint modules 40 can form the fingerprint detection array, can be used for receiving the detection signal that the fingerprint of different positions on display panel 20 detects regional 203 reflection back through the finger.

In an embodiment, the Display panel 20 may be a Liquid Crystal Display (LCD) panel or other passive light emitting Display screen, and the array of visible light LEDs 311 in the Mini-LED array 31 may serve as a backlight source of the Display panel 20. It is understood that the display panel 20 has a certain transmittance for the detection signal, so that the detection signal can penetrate the display panel 20 for signal transmission.

In another embodiment, the display panel 20 may also be an active light emitting display screen such as an LED electronic display screen, and the visible light LED311 array in the Mini-LED array 31 may be used as a pixel display of the display panel 20.

In an embodiment, the display panel 20 may be a touch display panel, which not only can display images, but also can detect a touch or pressing operation of a user, so as to provide a human-computer interaction interface for the user. For example, the electronic device 1 may include a touch sensor, which may be disposed on the surface of the display panel 20, or may be partially or entirely integrated inside the display panel 20, thereby forming a touch display panel.

In an embodiment, the size range of each visible light LED311 may be within 300 micrometers, for example, 80 micrometers to 300 micrometers, and the size setting may reduce the light mixing distance of the light source, thereby enabling an ultra-thin light emitting module; the array of visible light LEDs 311 comprising a plurality of visible light LEDs 311, in cooperation with dimming control, may provide better contrast and High Dynamic Range (HDR) display effect for the display panel 20.

In one embodiment, the size range of each of the invisible LEDs 312 may be within 600 microns, such as 50 microns to 600 microns.

The spacing between the visible light LED311 arrays is also very small, for example, 750 micrometers or 500 micrometers, and if the size of the invisible light LED312 is larger, the arrangement of the visible light LED311 arrays is affected, and the display effect of the display panel 20 is affected; therefore, in another preferred embodiment, the size of the invisible LEDs 312 may also range from 50 microns to 200 microns, i.e., smaller, to reduce the impact on the arrangement of the visible LED array. In a preferred embodiment, the size of the visible light LED311 is about 200 microns, and the size of the invisible light LED312 is about 100 microns.

In an embodiment, as shown in fig. 2, an orthographic projection of the light emitting module 30 on the inner surface of the display panel 20 is substantially coincident with the inner surface, that is, a size of the orthographic projection of the light emitting module 30 on the inner surface of the display panel 20 is equivalent to a size of the projection of the display panel 20 on the inner surface.

In one embodiment, the array of visible light LEDs 311 is distributed over the entire light emitting module 30, that is, the overall size of the array of visible light LEDs 311 is substantially the same as the overall size of the light emitting module 30 in a direction parallel to the extending direction of the display panel 20; in one embodiment, the visible light LED311 array may be a rectangular array, for example, arranged in K × L, where K is the number of rows and L is the number of columns; the visible light LEDs 311 in each row may be arranged directly opposite to each other or staggered from each other.

The at least one invisible light LED312 may be located at an array point of the visible light LED311 array instead of the at least one visible light LED311 in the visible light LED311 array, may also be located at an array point of the visible light LED311 array in a one-to-one correspondence with the at least one visible light LED311 in the visible light LED311 array, and may also be located in a gap between the array points of the visible light LED311 array. The number of the at least one invisible light LED312 may be one or more. The array point of the array of visible light LEDs 311 may be located immediately adjacent to the array point of the array of visible light LEDs 311 when located within the gap of the array point of the array of visible light LEDs 311, or may be located at a position intermediate to adjacent array points.

In one embodiment, as shown in fig. 4, the at least one invisible light LED312 replaces at least one visible light LED311 in the array of visible light LEDs 311 in a one-to-one correspondence, that is, the invisible light LED312 is located at the array point of the array of visible light LEDs 311.

In one embodiment, as shown in fig. 5, the at least one invisible LED312 is disposed beside at least one visible LED311 in the array of visible LEDs 311 in a one-to-one correspondence, that is, the invisible LED312 is located in the gap between the array points of the array of visible LEDs 311; at this time, it is preferable that the size of the invisible light LED312 is smaller than that of the visible light LED 311; for example, the size of the visible light LED311 is about 200 micrometers, and the size of the invisible light LED312 is about 100 micrometers, so that the electronic device 1 for identifying fingerprints under the screen has a good display effect.

In an embodiment, as shown in fig. 6, the at least one invisible light LED312 is disposed beside at least one visible light LED311 in the array of visible light LEDs 311 in a one-to-one correspondence, and each invisible light LED312 and the corresponding visible light LED311 are disposed side by side at an array point of the array of visible light LEDs 311; at this time, it is preferable that the size of the invisible light LED312 is the same as that of the corresponding visible light LED311, and is smaller than that of the visible light LEDs 311 of the other array dots; for example, the size of the invisible LEDs 312 is about 100 micrometers, the size of the visible LEDs 311 corresponding to the invisible LEDs 312 is also about 100 micrometers, and the size of the visible LEDs 311 of other array points is about 200 micrometers, so that the electronic device 1 for identifying fingerprints under the screen has a good display effect.

In one embodiment, as shown in fig. 7, the number of the at least one invisible light LED312 is plural, several invisible light LEDs 312 of the plurality of invisible light LEDs 312 are arranged beside at least one visible light LED311 of the visible light LED311 in a one-to-one correspondence manner instead of at least one visible light LED311 of the visible light LED311 array, that is, some of the invisible light LEDs 312 are located at array point positions of the visible light LED311 array, and some of the invisible light LEDs 312 are located in gaps of the array point positions of the visible light LED311 array; at this time, for example, it is preferable that the size of the visible light LED311 is about 200 micrometers, and the size of the invisible light LED312 is about 100 micrometers, so that the electronic device 1 for identifying fingerprints under the screen has a good display effect; for another example, it is more preferable that the size of the invisible LEDs 312 is about 100 micrometers, the size of the visible LEDs 311 adjacent to the invisible LEDs 312, that is, located at the same matrix point, is also about 100 micrometers, and the size of the visible LEDs 311 at other positions is about 200 micrometers, so that the electronic device 1 for identifying fingerprints under the screen has a better display effect.

When the number of the at least one invisible light LED312 is plural, the plural invisible light LEDs 312 are arranged such that most of the emitted light can reach the fingerprint detection area 203 and be reflected back to the fingerprint module 40; for example, the plurality of invisible light LEDs 312 may be arranged in a matrix or in a discrete arrangement; in a preferred embodiment, for example, the plurality of invisible LEDs 312 may be arranged in a shape, such as a triangle, a quadrangle, a pentagon, a circle, etc., and for example, the plurality of invisible LEDs 312 may be arranged in a shape radiating from a central point to the surroundings; and so on. Preferably, the plurality of invisible LEDs 312 are arranged in a shape radiating from a central point to the periphery, and in the design of such a shape, the invisible LEDs 312 at the central point and the surrounding invisible LEDs 312 form light complementation, so that the emitted detection signals are more uniform and stronger, and further more detection signals are more uniformly reflected to the fingerprint module 40, thereby improving the fingerprint identification efficiency.

Each invisible light LED312 of the at least one invisible light LED312 may be opposite to the position of the fingerprint module 40, or may be staggered from the position of the fingerprint module 40; in an embodiment, as shown in fig. 2 and 3, when the number of the at least one invisible light LED312 is multiple, the fingerprint module 40 is located at a center position of the multiple invisible light LEDs 312.

The light emitting surface of each invisible light LED312 of the at least one invisible light LED312 may be parallel to the inner surface of the display panel 20, or may form an included angle with the inner surface of the display panel 20, as long as most of the light emitted by each invisible light LED312 can reach the fingerprint detection area 203 and be reflected back to the fingerprint module 40; it is understood that the specific arrangement of the angles of the light emitting surfaces of the invisible LEDs 312 may depend on the positions of the invisible LEDs 312.

In an embodiment, the at least one invisible LED312 is plural and arranged in a shape radiating from a central point to the periphery, wherein as shown in fig. 2 and 3, the invisible LED312 at the central point is directly opposite to the fingerprint module 40, an emitting surface of the invisible LED312 at the central point is parallel to the inner surface of the display panel 20, the invisible LED312 at the central point is inclined to the inner surface of the display panel 20, and the invisible LEDs 312 at the central point are all inclined toward the central point, so that the emitted detection signal converges toward the center, and further more detection signals are emitted to the finger and reflected to the fingerprint module 40 by the finger.

In one embodiment, as shown in fig. 4, the number of the at least one invisible light LED312 is five, and five invisible light LEDs 312 are all located at the array point position of the visible light LED311 array, i.e. one-to-one replacement of five visible light LEDs 311 in the visible light LED311 array; one of the five invisible LEDs 312 is located at the center, and the other four invisible LEDs 312 are respectively located at the upper, lower, left, and right sides of the center invisible LED312 so as to be substantially square or diamond-shaped.

In an embodiment, as shown in fig. 5, the number of the at least one invisible light LED312 is five, and the five invisible light LEDs 312 are all located at the array point gap of the visible light LED311 array, such an arrangement can reduce the influence on the visible light LED311 array when the invisible light LEDs 312 are arranged, that is, the visible light LED311 array is not subjected to deletion adjustment, so that the display effect of the fingerprint identification electronic device under the screen can be ensured; one of the five invisible LEDs 312 is located at the center, and the other four invisible LEDs 312 are respectively located at the upper, lower, left, and right positions of the center invisible LED312, and are substantially square or diamond-shaped.

In one embodiment, as shown in fig. 7, the number of the at least one invisible light LED312 is nine, wherein five invisible light LEDs 312 are located at the array point position of the visible light LED311 array, i.e. instead of five visible light LEDs 311 in the visible light LED311 array in a one-to-one correspondence, four invisible light LEDs 312 are located at the array point gap of the visible light LED311 array; one invisible LED312 of the nine invisible LEDs 312 is located at a central point, and the other eight invisible LEDs 312 are distributed around the central point, for example, the other eight invisible LEDs 312 are distributed at equal distances on a circle with the invisible LED312 at the central point as a center; the invisible LEDs 312 in this embodiment not only have the advantages of the above embodiments, but also nine invisible LEDs 312 can be fully or partially opened, so as to correspond to more light emitting modes.

It is understood that the position of the invisible light LED312 may not be limited to the above-described embodiment.

The visible light LED311 may be a white light LED, or may be other LEDs with specific colors. The invisible light LED312 may be an infrared LED, a near-infrared LED, or the like, and may be set as required.

In an embodiment, it is further satisfied that: the reflectivity of the optical signal emitted by the invisible LED312 passing through the light emitting module 30 is smaller than the reflectivity of the optical signal emitted by the visible LED311 passing through the light emitting module 30.

In this embodiment, each of the invisible LEDs 312 is an infrared LED.

It is understood that the Mini-LED array may be formed on a substrate 32 as shown in fig. 2 and 3.

In an embodiment, as shown in fig. 2 and fig. 3, the light emitting module 30 may further include a reflective layer 33, the reflective layer 33 is formed on a side of the substrate 32 where the Mini-LED array 311 is located, the side being away from the display panel 20, and the reflective layer 33 is used for emitting light emitted by the visible light LED array 311 to the side of the display panel 20, so as to improve the light utilization efficiency.

In this embodiment, the reflectivity of the optical signal emitted by the invisible LED312 when passing through the reflective layer 33 is smaller than the reflectivity of the optical signal emitted by the visible LED311 when passing through the reflective layer 33, the transmittance of the optical signal emitted by the invisible LED312 when passing through the reflective layer 33 is greater than the transmittance of the optical signal emitted by the visible LED311 when passing through the reflective layer 33, and the reflective layer 33 also can reduce the loss of the optical signal emitted by the invisible LED312 in the transmission path, thereby improving the fingerprint identification quality.

The light-emitting module in the prior art needs to include a light guide plate to convert a line light source and a point light source into a surface light source, so that the thickness of the light-emitting module is increased, and the complexity of the process is increased; in the implementation of the present application, the overall size of the visible light LED311 array is set to be substantially the same as the overall size of the light emitting module 30, so that the visible light LED311 array can provide light sources for each position of the display panel 20, and therefore, the light emitting module 30 of the present application does not need to be provided with a light guide plate, which can make the thickness of the light emitting module 30 smaller, and is more favorable for thinning the electronic device 1 for identifying fingerprints under the screen.

In addition, the light emitting module in the prior art needs to include optical films, such as a prism film, a brightness enhancement film, a diffusion film, and the like, to correct the light emitted by the light source, so as to be suitable for displaying the image of the electronic device, which not only increases the thickness of the light emitting module, but also increases the complexity of the process; in the implementation of the present application, the arrangement of the visible light LED311 array can provide a light source for the display panel 20 with uniform and high quality, so that the light-emitting module 30 of the present application does not need to be provided with the above-mentioned various optical films, which can make the thickness of the light-emitting module 30 smaller, and is more beneficial to the thinning of the electronic device 1 for identifying fingerprints under the screen. Of course, it is understood that in other embodiments of the present disclosure, optical films may be provided to achieve certain optical effects.

In an embodiment, as shown in fig. 2 and 3, the light emitting module 30 may further include a steel plate 34, and the steel plate 34 may be formed on a side of the reflective layer 33 away from the display panel 20; the steel plate 34 may have an opening 341 formed therein, and the fingerprint module 40 may be formed below the opening 341, and may pass through the opening 341 to the fingerprint module 40 after being reflected by a finger from the fingerprint detection region 203.

In an embodiment, as shown in fig. 2 and 3, the fingerprint module 40 includes a receiver 41, a substrate 42, a flexible board, a packaging layer, and the like, for example, the fingerprint module 40 may be a package body, and a receiving surface of the receiver 41 is exposed to the packaging layer and disposed toward the light emitting module 30. Optionally, a light path of the receiver 41 receiving the detection signal is further provided with a light condensing element, a light converting element, and the like.

In an embodiment, as shown in fig. 2 and 3, the display screen assembly 200 may further include a cover plate 50 laminated on an outer surface of the display panel 20. The cover plate 50 includes a light-transmitting region corresponding to the display region 201 of the display panel 20. The material of the cover plate 50 includes, but is not limited to, a light-transmitting material such as glass, plastic, or sapphire. Wherein, the fingerprint identification can be actually performed on the cover plate 50 above the fingerprint identification area 203 of the display panel 20 or on the surface of the protective layer covering the cover plate 50.

In one embodiment, as shown in fig. 1, the electronic device 1 further includes a controller 400, and the controller 400 is configured to control the at least one invisible LED312 to emit a detection signal. Specifically, the controller 400 is configured to individually control each of the at least one invisible light LED 312; for example, each of the at least one invisible light LED312 is controlled to be turned on or off, and a part of the plurality of invisible light LEDs 312 is controlled to be turned on. In other embodiments, the controller 400 may also control the at least one invisible light LED312 simultaneously, and this is only used to control each of the at least one invisible light LED312 to be turned on or off, and is not used to control some of the invisible light LEDs 312 to be turned on.

It is understood that when the controller 400 controls all or part of the at least one invisible light LED312 to be turned on, the array of visible light LEDs 311 can be simultaneously controlled to be turned on.

In an embodiment, when the number of the at least one invisible light LED312 is plural, the controller 400 is configured to control a part or all of the plural invisible light LEDs 312 to be turned on according to an ambient light; for example, when it is sensed that the ambient light is stronger, for example, greater than or equal to a preset ambient light intensity threshold, the invisible light LEDs 312 are all controlled to be turned on, so that the infrared signal received by the fingerprint module 40 is enhanced, and thus, the interference of external strong light on the invisible light signal is reduced; when sensing that the ambient light is weak, for example, less than a preset ambient light intensity threshold, the invisible LEDs 312 are controlled to be partially turned on, which enables the fingerprint module 40 to receive a strong invisible light signal and also saves power.

For example, in the aforementioned embodiment of five invisible light LEDs 312, when it is sensed that the ambient light is strong, all of the five invisible light LEDs 312 may be controlled to be turned on; when it is sensed that the ambient light is weak, one of the invisible LEDs 312 in the control center position is turned on, or four of the invisible LEDs 312 around the control center position are turned on.

For another example, in the aforementioned nine invisible light LEDs 312 embodiment, when it is sensed that the ambient light is stronger, nine invisible light LEDs 312 may be controlled to be turned on all; when it is sensed that the ambient light is weak, one of the invisible LEDs 312 in the control center is turned on, or four of the eight invisible LEDs 312 around the control center are turned on, wherein, as shown in fig. 8, for example, every other one of the eight invisible LEDs 312 is turned on, so that the four turned-on invisible LEDs 312 have a diamond shape or a square shape (the polygonal pattern represents that the invisible LEDs 312 are turned on).

In an embodiment, the sensed ambient light may be further classified, where different levels correspond to different numbers of the invisible LEDs 312 being turned on, for example, the sensed ambient light is divided into three levels, from a first level to a third level, the ambient light is from weak to strong, and when the number of the at least one invisible LED is M, the controller 400 is configured to control N invisible LEDs 312 to be turned on when the intensity of the ambient light corresponds to the first level; when the ambient light intensity corresponds to the second level, controlling the opening of the O invisible LEDs 312; and when the ambient light intensity corresponds to the third level, controlling the turning on of the P invisible LEDs 312; wherein M, N, O, P are all natural numbers, and N is more than O and P is less than or equal to M. For example, in the aforementioned nine embodiments of the invisible light LEDs 312, when the ambient light is sensed to be the third level, nine of the invisible light LEDs 312 may be controlled to be all turned on; when the ambient light is sensed to be of the second level, controlling a plurality of nine of the invisible LEDs 312 to be turned on, for example, controlling four of the eight invisible LEDs 312 around the center position to be turned on, wherein for example, every other one of the eight invisible LEDs 312 is turned on, and for example, controlling four of the eight invisible LEDs 312 around the center position to be turned on, wherein for example, every other one of the eight invisible LEDs 312 is turned on, that is, controlling five of the nine invisible LEDs 312 to be turned on; when the ambient light is sensed to be of the second level, one of the invisible LEDs 312 in the center position is controlled to be turned on, or three of the eight invisible LEDs 312 around the center position are controlled to be turned on. Therefore, the ambient light is graded, and the invisible LEDs 312 with different quantities are turned on according to the grading, so that the ambient light can be better adapted to the change of the ambient light, and the interference of the ambient light on the optical signals emitted by the invisible LEDs 312 is more accurately reduced.

In another embodiment, the controller 400 is configured to control some or all of the invisible LEDs 312 to be turned on according to the power of the electronic device 1; for example, when the electric quantity is sensed to be greater than a preset electric quantity threshold value, the invisible light LEDs 312 are all controlled to be turned on, so that the infrared signal received by the fingerprint module 40 is stronger, and the fingerprint identification efficiency is higher; when the electric quantity is sensed to be larger than a preset electric quantity threshold value, the invisible light LEDs 312 are controlled to be partially turned on, so that the electric quantity can be saved. The turning-on scheme of turning on a plurality of the invisible LEDs 312 partially can refer to the foregoing description.

It is understood that the turn-on scheme of the plurality of invisible LEDs 312 may not be limited to the above example.

As shown in fig. 1, the off-screen fingerprint recognition electronic device 1 further comprises one or more programs 51, wherein the one or more programs 501 are stored in the memory 500 and configured to be executed by the controller 400.

Referring to FIG. 9, in one embodiment, the one or more programs 501 include instructions for:

when the finger is sensed to press the display screen assembly 200, controlling the at least one invisible light LED312 to be turned on to emit a detection signal; and

control fingerprint module 40 receives the detection signal that reflects back through the finger and forms the fingerprint image.

Referring to fig. 10, in one embodiment, when the number of the at least one invisible light LED312 is multiple, the one or more programs 501 include instructions for:

sensing the intensity of ambient light when the finger is pressed on the display screen assembly 200;

judging whether the ambient light intensity is greater than or equal to a preset ambient light intensity threshold value;

when the ambient light intensity is greater than or equal to a preset ambient light intensity threshold, controlling all of the invisible LEDs 312 to be turned on; and

when the intensity of the ambient light is less than a preset ambient light intensity threshold, the invisible LEDs 312 are controlled to be partially turned on.

The specific scheme that a plurality of the invisible LEDs 312 are partially turned on can be referred to above.

Referring to fig. 11, in an embodiment, a corresponding relationship between the intensity of ambient light and the level of the ambient light is stored in the memory 500, where the level of the ambient light includes a first level, a second level, and a third level, and the ambient light is from weak to strong from the first level to the third level; when the number of the at least one invisible light LED312 is M, the one or more programs 501 include instructions for:

the sensed ambient light intensity is corresponding to the pre-stored ambient light level;

when the intensity of the ambient light corresponds to a first level, controlling the turning on of the N invisible LEDs 312; when the ambient light intensity corresponds to the second level, controlling the opening of the O invisible LEDs 312; and when the ambient light intensity corresponds to the third level, controlling the turning on of the P invisible LEDs 312;

wherein M, N, O, P are all natural numbers, and N is more than O and P is less than or equal to M.

Referring to fig. 12, in one embodiment, when the number of the at least one invisible light LED312 is multiple, the one or more programs 501 include instructions for:

when the fact that a finger presses the display screen assembly 200 is sensed, detecting the electric quantity of the electronic equipment 1 identified by the finger print under the screen;

judging whether the electric quantity is greater than or equal to a preset electric quantity threshold value;

when the electric quantity is greater than or equal to a preset electric quantity threshold value, controlling all the invisible light LEDs 312 to be turned on; and

when the electric quantity is smaller than a preset electric quantity threshold value, the invisible light LEDs 312 are controlled to be partially turned on.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and may be implemented in other ways, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a read-only memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and the like.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: a flash disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, and the like.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. The utility model provides a fingerprint discernment electronic equipment under screen which characterized in that, includes the display screen subassembly, the display screen subassembly includes:

a display panel including a fingerprint detection area;

the light-emitting module comprises a Mini-LED (Mini-LED) array, the Mini-LED array comprises a visible light LED array and at least one invisible light LED, the at least one invisible light LED is used for sending a detection signal to the fingerprint detection area of the display panel, and the penetration rate of a light signal sent by the invisible light LED when passing through the light-emitting module is greater than that of a light signal sent by the visible light LED when passing through the light-emitting module;

the fingerprint module is formed on one side, far away from the display panel, of the light-emitting module, and is used for receiving detection signals which penetrate through the display panel and the light-emitting module after being reflected by fingers from the fingerprint detection area and generating fingerprint information according to the received detection signals;

a controller for individually controlling each of the at least one invisible light LED to emit a detection signal; and

the storage device is used for storing the corresponding relation between the ambient light intensity and the ambient light level, the ambient light level comprises a first level, a second level and a third level, and the ambient light is from weak to strong from the first level to the third level;

when the number of the at least one invisible light LED is M, the controller is used for controlling the N invisible light LEDs to be turned on when the ambient light intensity corresponds to a first level; when the ambient light intensity corresponds to a second level, controlling the opening of the O invisible LEDs; when the ambient light intensity corresponds to the third level, controlling the P invisible LEDs to be turned on; wherein M, N, O, P are all natural numbers, and N is more than O and P is less than or equal to M.

2. The underscreen fingerprint identification electronic device of claim 1, wherein the at least one non-visible light LED is located at an array point location of the array of visible light LEDs in place of at least one visible light LED in the array of visible light LEDs.

3. The electronic device for identifying fingerprints of under-screen of claim 1, wherein the at least one invisible light LED is in one-to-one correspondence with at least one visible light LED in the visible light LED array and is located side by side at an array point position of the visible light LED array; the size of each invisible light LED is the same as that of the corresponding visible light LED and smaller than that of the non-corresponding visible light LED.

4. The underscreen fingerprint identification electronic device of claim 1 wherein said at least one invisible LED is located within a gap of array points of said array of visible LEDs; the size of each of the invisible LEDs is smaller than the size of each of the visible LEDs.

5. The underscreen fingerprint identification electronic device of claim 1, wherein the at least one invisible light LED is plural in number, wherein a portion of the invisible light LEDs are located at array point locations of the array of visible light LEDs and a portion of the invisible light LEDs are located within gaps of the array point locations of the array of visible light LEDs.

6. The underscreen fingerprint identification electronic device of claim 1, wherein the at least one invisible light LED is plural in number, and the plural invisible light LEDs are arranged in a shape radiating from a central point to a periphery.

7. The electronic device for identifying fingerprints of under-screen of claim 6, wherein the number of the at least one invisible light LED is five, one of the five invisible light LEDs is located at the center, and the other four invisible light LEDs are respectively located at the upper, lower, left and right positions of the central invisible light LED so as to be in a square or diamond shape.

8. The electronic device for identifying fingerprints of under-screen of claim 6, wherein the number of the at least one invisible light LED is nine, one of the nine invisible light LEDs is located at a central point, and the eight invisible light LEDs around the central point are equidistantly distributed on a circle with the center of the invisible light LED at the central point as a center.

9. The electronic device for identifying fingerprints under the screen of claim 6, wherein the invisible light LED at the central point is opposite to the position of the fingerprint module; the emitting surface of the invisible light LED at the central point is parallel to the inner surface of the display panel, the invisible light LEDs around the central point are inclined to the inner surface of the display panel, and the invisible light LEDs around the central point are inclined towards the central point.

10. The electronic device according to any one of claims 1 to 9, wherein when the number of the at least one invisible light LED is plural, the controller is configured to control the plural invisible light LEDs to be turned on all when the power of the electronic device is greater than or equal to a preset power threshold, and to control the plural invisible light LEDs to be turned on partially when the power of the electronic device is less than the preset power threshold.

11. The underscreen fingerprint identification electronic device of any one of claims 1-9 wherein the number of said at least one invisible light LED is nine, wherein eight of said invisible light LEDs are disposed around one invisible light LED; the controller is further used for controlling all nine invisible light LEDs to be turned on when the fact that the intensity of the sensed ambient light is greater than or equal to a preset ambient light intensity threshold value is sensed; when sensing that the intensity of the ambient light is smaller than a preset ambient light intensity threshold value, controlling four of the eight invisible LEDs to be turned on, wherein the turned-on four invisible LEDs are arranged in a diamond shape or a square shape.

12. The electronic device for identifying fingerprints under screen of any one of claims 1 to 9, wherein the light emitting module further comprises a reflective layer, the reflective layer is formed on a side of the Mini-LED array away from the display panel, and the reflective layer is used for emitting light emitted by the visible light LED array to a side of the display panel; the reflectivity of the optical signal emitted by the invisible light LED when passing through the reflecting layer is smaller than the reflectivity of the optical signal emitted by the visible light LED when passing through the reflecting layer, and the penetration rate of the optical signal emitted by the invisible light LED when passing through the reflecting layer is larger than the penetration rate of the optical signal emitted by the visible light LED when passing through the reflecting layer.

13. A display screen assembly, comprising:

a display panel including a fingerprint detection area;