CN110569825A - Display screen assembly and electronic equipment for identifying fingerprints under screen - Google Patents
Display screen assembly and electronic equipment for identifying fingerprints under screen Download PDFInfo
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- CN110569825A CN110569825A CN201910882012.4A CN201910882012A CN110569825A CN 110569825 A CN110569825 A CN 110569825A CN 201910882012 A CN201910882012 A CN 201910882012A CN 110569825 A CN110569825 A CN 110569825A
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- display panel
- fingerprint
- display
- module
- receiver
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Abstract
The application provides fingerprint identification electronic equipment under screen, including the display screen subassembly, include: the display panel comprises a display area and a non-display area, and the display area of the display panel is provided with a fingerprint detection area; the backlight module is overlapped with the display panel; the fingerprint module is positioned in a non-display area of the display panel, and a transmitter and a receiver are arranged on the side surface, close to the fingerprint detection area, of the fingerprint module; the transmitter and the receiver are arranged on the side face at intervals of a preset distance along the direction parallel to the extending direction of the display panel; the emitter is used for emitting a detection signal to a fingerprint detection area of the display panel; the receiver is used for receiving the detection signal reflected by the finger above the fingerprint detection area and generating fingerprint information of the finger according to the received detection signal. A display screen assembly is also provided.
Description
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 are different from those of an OLED panel, the backlight module of the LCD panel has opacity. Therefore, the OLED under-screen fingerprint identification scheme is not suitable for LCD screens. Therefore, how to realize optical fingerprint identification under an LCD screen is a technical problem to be solved urgently in the field.
Content of application
The application provides a can realize optical fingerprint identification's under LCD screen display screen subassembly and screen fingerprint identification electronic equipment.
The application provides fingerprint identification electronic equipment under screen, including the display screen subassembly, the display screen subassembly includes: the display panel comprises a display area and a non-display area, and the display area of the display panel is provided with a fingerprint detection area; the backlight module is overlapped with the display panel; the fingerprint module is positioned in a non-display area of the display panel, and a transmitter and a receiver are arranged on the side surface, close to the fingerprint detection area, of the fingerprint module; the transmitter and the receiver are arranged at intervals of a preset distance along the direction parallel to the extending direction of the display panel; the emitter is used for emitting a detection signal to a fingerprint detection area of the display panel; the receiver is used for receiving the detection signal reflected by the finger above the fingerprint detection area and generating fingerprint information of the finger according to the received detection signal.
The present application further provides a display screen assembly, including: the display panel comprises a display area and a non-display area, and the display area of the display panel is provided with a fingerprint detection area; the backlight module is overlapped with the display panel; the fingerprint module is positioned in a non-display area of the display panel, and a transmitter and a receiver are arranged on the side surface, close to the fingerprint detection area, of the fingerprint module; the transmitter and the receiver are arranged at intervals of a preset distance along the direction parallel to the extending direction of the display panel; the emitter is used for emitting a detection signal to a fingerprint detection area of the display panel; the receiver is used for receiving the detection signal reflected by the finger above the fingerprint detection area and generating fingerprint information of the finger according to the received detection signal.
The under-screen fingerprint identification electronic equipment and the display screen assembly can realize optical fingerprint identification under an LCD screen; and emitter and receiver are located the homonymy surface of fingerprint module rather than on two sides, thereby can make the setting of fingerprint module is inseparabler, and further, also make the width of fingerprint module narrow down, thereby occupy display panel's the width in non-display area also diminishes, and then makes display panel's the display area occupy than great.
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 a first embodiment of the present application.
3 FIG. 32 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 of 3 the 3 underscreen 3 fingerprint 3 recognition 3 electronic 3 device 3 provided 3 in 3 FIG. 31 3 along 3 line 3 A 3- 3 A 3. 3
Fig. 3 is a schematic structural diagram of a side surface of a fingerprint module of a display screen assembly of an electronic device for underscreen fingerprint identification according to a first embodiment of the present application.
Fig. 4 is a schematic cross-sectional view of an electronic device for underscreen fingerprint identification provided in a second embodiment of the present application.
Fig. 5 is a schematic cross-sectional view of an electronic device for identifying fingerprints under a screen according to a third embodiment of the present application.
Fig. 6 is a schematic cross-sectional view of an electronic device for underscreen fingerprint identification provided in a fourth embodiment of the present application.
Fig. 7 is a schematic cross-sectional view of an electronic device for underscreen fingerprint identification provided in a fifth embodiment of the present application.
fig. 8 is a schematic cross-sectional view of an electronic device for underscreen fingerprint identification provided in a sixth embodiment of the present application.
Fig. 9 is an enlarged schematic cross-sectional view of a fingerprint module of an electronic device for identifying fingerprints under a screen according to a sixth embodiment of the present application.
Fig. 10 is a schematic side view of a fingerprint module of a display screen assembly of an electronic device for underscreen fingerprint identification according to a sixth embodiment of the present disclosure.
Fig. 11 is a schematic side view of a fingerprint module of a display screen assembly of an electronic device for underscreen fingerprint identification according to a seventh embodiment of the present disclosure.
Fig. 12 is a schematic side view of a fingerprint module of a display screen assembly of an electronic device for underscreen fingerprint identification according to an eighth embodiment of the present disclosure.
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 100 for underscreen fingerprint identification according to a first embodiment of the present application includes a display screen assembly 200 and a housing 300, where the display screen assembly 200 is accommodated in the housing 300.
The display screen assembly 200 includes a display panel 20, a backlight module 30 and a fingerprint module 40.
The display panel 20 includes a display area 201 and a non-display area 202. A fingerprint detection area 203 is disposed on the display area 201 of the display panel 20. The backlight module 30 is stacked on the display panel 20. The fingerprint module 40 is located in the non-display area 202 of the display panel 20. The side 403 of the fingerprint module 40 close to the fingerprint detection area 203 is provided with a transmitter 41 and a receiver 42, and the transmitter 41 and the receiver 42 are arranged at a predetermined distance in a direction parallel to the extending direction of the display panel 20. The transmitter 41 is configured to send a detection signal to the fingerprint detection area 203 of the display panel 20, and the receiver 42 is configured to receive the detection signal reflected by a finger above the fingerprint detection area 203 and generate fingerprint information of the finger according to the received detection signal.
It can be understood that the transmitter 41 and the receiver 42 are disposed on the same side surface of the fingerprint module 40 instead of two side surfaces, so that the fingerprint module 40 can be disposed more tightly, that is, compared with disposing the transmitter 41 and the receiver 42 on two surfaces of the fingerprint module 40, the present application can make the volume of the fingerprint module 40 smaller, and further, make the width of the fingerprint module 40 narrower, so that the width of the non-display area 202 occupied by the display panel 20 is also smaller, that is, the size of the display area 201 of the display panel 20 can be set larger, and further make the occupation ratio of the display area 201 of the display panel 20 larger; moreover, the emitter 41 and the receiver 42 are disposed on the side surface 403 at intervals along a direction parallel to the extending direction of the display panel 20, so that the detection signal emitted by the emitter 41 is more reflected to the surface of the receiver 42, and the identification efficiency of the fingerprint identification under the screen is further improved.
The Display panel 20 may be a Liquid Crystal Display (LCD) panel or other passive light emitting Display. 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 an embodiment, the non-display area 202 may be disposed on one side of the display area 201, for example, the non-display area 202 is disposed below the display area 201. In another embodiment, the non-display area 202 may also be semi-enclosed in the display area 201, a gap is formed in the display area 201, and the non-display area 202 is semi-enclosed in the gap of the display area 201; among other things, this arrangement is advantageous for increasing the ratio of the display area 201 in the display panel 20. In this embodiment, as shown in fig. 1, the non-display area 202 is disposed around the display area 201. In other embodiments, the positional relationship between the display area 201 and the non-display area 202 may not be limited to the above embodiments.
The fingerprint detection area 203 may be a fixed position of the display area 201 on the display panel 20, or may extend to the entire display area 201 of the liquid crystal panel, which is not specifically limited in this embodiment of the application. Correspondingly, the number of the receivers 42 may be one, or may be multiple, and the multiple receivers may be used to receive detection signals reflected by fingers in different fingerprint detection areas 203 on the display panel 20.
In this embodiment, as shown in fig. 2, an orthogonal projection of the backlight module 30 on the inner surface 22 substantially coincides with the inner surface 22, that is, a size of the orthogonal projection of the backlight module 30 on the inner surface 22 is equivalent to a size of a projection of the display panel 20 on the inner surface 22; the backlight module 30 includes an optical exit portion 32 and a sealing portion 33 connected to the optical exit portion 32, the optical exit portion 32 substantially corresponds to the display area 201 of the display panel 20, and a projection of the sealing portion 33 on the display panel 20 falls into the non-display area 202; preferably, an orthogonal projection of the light emitting portion 32 on the inner surface 22 substantially coincides with the display area 201, and an orthogonal projection of the sealing portion 33 on the inner surface 22 substantially coincides with the non-display area 202; the display panel 20 includes a display surface 21 and an inner surface 22 opposite to the display surface 21, the backlight module 30 is disposed on the inner surface 22 side of the display panel 20, and a gap space 31 is formed between the backlight module 30 and the display panel 20; the fingerprint module 40 is sandwiched between the sealing portion 33 of the backlight module 30 and the display panel 20 and is contained in the gap space 31, and the fingerprint module 40 is located in the non-display area 202 of the display panel 20.
Because the fingerprint module 40 is sandwiched between the backlight module 30 and the display panel 20, the detection signal emitted by the emitter 41 is not blocked by the backlight module 30, and thus can reach the fingerprint detection area 203 of the display panel 20, and then is reflected to the receiver 42 to generate the fingerprint information of the finger, so that the fingerprint identification under the screen can be realized, moreover, the inner surface 22 of the display panel 20 does not need to reserve a non-display area for emitting and receiving the detection signal, or the non-display area 202 only needs to be provided with the fingerprint module 40, and the fingerprint module 40 does not need to occupy the non-display area 202 for emitting and receiving the detection signal, so that the size of the non-display area 202 of the display panel 20 can be set to be smaller, and further the occupation ratio of the display area 201 of the display panel 20 can be improved.
In this embodiment, as shown in fig. 2, the backlight module 30 is in a flat plate shape, the backlight module 30 and the inner surface 22 of the display panel 20 form an inclined included angle, a distance between the backlight module 30 and the display panel 20 gradually increases, a distance between the encapsulating portion 33 of the backlight module 30 and the display panel 20 is greater than a distance between the light emitting portion 32 of the backlight module 30 and the display panel 20, a gap space 31 having a triangular cross section is formed between the backlight module 30 and the inner surface 22 of the display panel 20, and the fingerprint module 40 is accommodated in one end of the gap space 31 having a larger cross-sectional height. It can be understood that the size of the included angle between the backlight module 30 and the inner surface 22 of the display panel 20 depends on the thickness and the position of the fingerprint module 40. The backlight module 30 is flat, so that the processing and manufacturing are easy, and the detection signal emitted by the emitter 41 of the fingerprint module can enter the display panel 20 through the gap space, and the detection signal reflected by the finger above the fingerprint detection area 203 can also reach the surface of the receiver 42 through the gap space.
In other embodiments, the backlight module 30 may have other shapes, such as an arc shape, a bent shape, and the like.
In this embodiment, the detection signal is an optical signal, the optical layer 50 is filled in the gap space 31, the optical layer 50 is favorable for propagation of the optical signal, and in addition, the optical layer 50 also enables the backlight module 30, the fingerprint module 40 and the display panel 20 to be connected into a whole, so that the structure is more compact and stable. In other embodiments, the optical layer may not be filled in the gap space 31.
In other embodiments, the backlight module 30 may not form the encapsulation portion 33, and the orthographic projection of the backlight module 30 on the inner surface 22 falls within the display area 201. For example, the orthographic projection of the fingerprint module 40 on the inner surface 22 and the orthographic projection of the backlight module 30 on the inner surface 22 may be staggered and a gap is formed therebetween, or the orthographic projection of the fingerprint module 40 on the inner surface 22 and the orthographic projection of the backlight module 30 on the inner surface 22 may also be staggered and seamlessly connected.
The fingerprint module 40 includes an upper surface 401 facing the display panel 20, a lower surface 402 opposite to the upper surface 401, and the side surface 403 connected between the upper surface 401 and the lower surface 402. In this embodiment, the inner surface 22 of the display panel 20 is a plane, the upper surface 401 of the fingerprint module 40 is attached to the inner surface 22 of the display panel 20, and the lower surface 402 of the fingerprint module 40 is abutted to the backlight module 30.
In other embodiments, the display panel 20 may further form a receiving groove on the non-display area 202, and the fingerprint module 40 is partially received in the receiving groove.
In the present embodiment, the fingerprint module 40 is a package, and the transmitter 41 and the receiver 42 are packaged in a single package. For example, the fingerprint module 40 may further include a substrate, a flexible board and a packaging layer, the packaging layer wraps the transmitter 41 and the receiver 42 and fixes the transmitter 41 and the receiver 42 on the substrate, and the flexible board is electrically connected to the transmitter 41 and the receiver 42 for electrically connecting the transmitter 41 and the receiver 42 with other components. Wherein a transmitting face of the transmitter 41 and a receiving face of the receiver 42 are exposed to the encapsulation layer. The top surface 401 and the side surface 403 may be the top surface and the side surface of the encapsulation layer, respectively.
In this embodiment, the side 403 is a surface inclined with respect to the display panel 20, and the side 403 is inclined toward the fingerprint detection area 203 of the display panel 20, so that the transmitter 41 disposed on the side 403 can transmit the detection signal at an angle inclined with respect to the display panel 20, and the receiver 42 on the side 403 can receive the detection signal at an angle inclined with respect to the display panel 20, and in addition, the inclined side 403 can increase the area of the side 403, so that the transmitter 41 on the side 403 can be provided with a larger transmission area, and the receiver 42 on the side 403 can be provided with a larger reception area. The inclination angle of the side 403 may be greater than 0 degree to less than 90 degrees, or greater than 0 degree to less than 60 degrees, or greater than 30 degrees to less than 45 degrees.
In other embodiments, the side surface 403 may also be a vertical surface relative to the display panel 20.
In this embodiment, the emitters 41 and the receivers 42 are disposed on the side surface 403 at intervals of a predetermined distance along a direction parallel to the extending direction of the display panel 20, and the emitters 41 and the receivers 42 are disposed flush with each other along a direction perpendicular to the extending direction of the display panel 20, that is, the emitters 41 and the receivers 42 are disposed at substantially the same height, so that the height of the side surface 403 between the upper surface 401 and the lower surface 402 can be reduced, thereby facilitating the miniaturization of the fingerprint module 40.
In other embodiments, the emitters 41 and the receivers 42 may be arranged in a staggered manner in a direction perpendicular to the extending direction of the display panel 20, that is, the emitters 41 and the receivers 42 are arranged at different heights, which is to say, the height of the side surface 403 between the upper surface 401 and the lower surface 402 is required to be larger, and the arrangement is of course advantageous for the arrangement of the emitting angle and the receiving angle.
In this embodiment, the side surface 403 is provided with a groove 4031, and the emitter 41 and the receiver 42 can be accommodated in the groove 4031 and embedded in the side surface 403, so that the overall volume of the fingerprint module 40 is small; the bottom surface of the groove 4031 may be inclined with respect to the side surface 403 or parallel to the side surface 403 so that the emitter 41 and the receiver 42 have a suitable inclination angle; of course, in other embodiments, the transmitter 41 and the receiver 42 may be arranged in other manners.
the emitting direction of the emitter 41 is inclined toward the receiving surface of the receiver 42 so as to form an inclined included angle with the receiving surface of the receiver 42, and the included angle may be greater than 0 degree to less than 90 degrees, also greater than 0 degree to less than 60 degrees, and also greater than 30 degrees to less than 45 degrees, so that the detection signal emitted by the emitter 41 can reach the receiving surface of the receiver 42 after being reflected. The own emitting angle of the emitter 41 may be set to be inclined, or the whole emitter 41 may be set to be inclined, so that the emitting direction of the emitter 41 is inclined toward the receiving surface of the receiver 42 to form an inclined included angle with the receiving surface of the receiver 42. For example, the groove bottom of the groove may be inclined in both the horizontal direction and the vertical direction, so that both the detection signal emitted by the emitter 41 can reach the fingerprint detection region 203 and the reflected detection signal can be emitted to the receiving surface of the receiver 42.
The detection signal emitted by the emitter 41 may be a visible detection signal, an invisible detection signal, or the like. The invisible detection signal may be, for example, an infrared, ultraviolet lamp detection signal. The infrared detection signal has strong penetrating power and is invisible, the display image cannot be influenced, and the infrared detection signal can be used as an optimal detection signal. The number of the transmitters 41 may be one or more; for example, a plurality of infrared LED lamps may be provided. The receiver 42 may be a CMOS optic or a CCD optic or the like. The number of the receivers 42 may be one or more.
In this embodiment, the number of the transmitters 41 is two, the number of the receivers 42 is one, the two transmitters 41 are respectively disposed at two sides of the receiver 42, the orthographic projection of the receiver 42 on the display panel 20 is approximately located on a connecting line between the center of the fingerprint detection area 203 and the center of the orthographic projection of the fingerprint module 40 on the display panel 20, the orthographic projection of the two transmitters 41 on the display panel 20 is located at two sides of a connecting line between the center of the fingerprint detection area 203 and the center of the orthographic projection of the fingerprint module 40 on the display panel 20, the two transmitters 41 are arranged to make the transmitted detection signal stronger, so as to make more detection signals reflect to the receivers 42, thereby improving the fingerprint identification efficiency.
Optionally, a light path of the receiver 42 receiving the detection signal may further include a light condensing element, a light converting element, and the like.
In this embodiment, as shown in fig. 2, the electronic device 100 may further include a cover plate 60 laminated on the outer surface 21 of the display panel 20. The cover plate 60 includes a light-transmitting region corresponding to the display region 201 of the display panel 20. The material of the cover plate 60 includes, but is not limited to, a light-transmitting material such as glass, plastic, or sapphire. The cover 60 may further include a non-transmission region, which may correspond to the non-display region 202 of the display panel 20. The opaque region may be formed by applying or printing a black or white light-shielding ink layer on the inner surface (the surface facing the display panel 20) of the cover 60. Wherein the fingerprint recognition may be actually performed on the cover sheet 60 over the fingerprint recognition area 203 of the display panel 20 or on the surface of a protective layer covering the cover sheet 60.
As shown in fig. 4, an electronic device 100 for identifying fingerprints of the second embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the differences are: in the second embodiment, the backlight module 30 is bent, the light-emitting portion 32 of the backlight module 30 includes a first segment 321 parallel to and attached to the display panel 20, and a second segment 322 inclined to the display panel 20, and the second segment 322 is connected between the first segment 321 and the packaging portion 33; the packaging part 33 of the backlight module 30 is parallel to and spaced from the display panel 20; a gap space 31 with a trapezoidal cross section is formed between the second section 322 and the sealing portion 33 of the backlight module 30 and the inner surface 22 of the display panel 20, and the fingerprint module 40 is accommodated in one end of the gap space 31 with a larger cross section height. The first segment 321 of the backlight module 30 is attached to the display panel 20 in parallel, so that the thickness of the display screen assembly 200 at the position corresponding to the first segment 321 is small, and some space of the electronic device 100 for fingerprint identification under the screen can be saved for arranging other components, thereby facilitating the lightness and thinness of the electronic device for fingerprint identification under the screen, and the detection signal emitted by the emitter 41 of the fingerprint module can enter the display panel 20 through the gap space 31, and the detection signal reflected by the finger above the fingerprint detection area 203 can also reach the surface of the receiver 42 through the gap space.
As shown in fig. 5, an electronic device 100 for identifying fingerprints of the third embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the difference is that: in the third embodiment, the orthographic projection of the backlight module 30 on the inner surface 22 falls into the display area 201, the orthographic projection of the fingerprint module 40 on the inner surface 22 is offset from the orthographic projection of the backlight module 30 on the inner surface 22, and a gap space 31 is formed between the orthographic projection of the fingerprint module 40 and the orthographic projection of the backlight module 30 on the inner surface 22, the gap space 31 can provide a light path for the detection signal, or the gap space 31 can enable the detection signal not to be blocked by the backlight module 30; the detection signal emitted by the emitter 41 of the fingerprint module can enter the display panel 20 through the gap space 31, and the detection signal reflected by the finger above the fingerprint detection area 203 can also reach the surface of the receiver 42 through the gap space 31; this design may result in a smaller overall thickness of the display screen assembly 200.
As shown in fig. 6, the electronic device for identifying fingerprints of the fourth embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the differences are as follows: in the fourth embodiment, the orthographic projection of the backlight module 30 on the inner surface 22 falls into the display area 201, and the orthographic projection of the fingerprint module 40 on the inner surface 22 is staggered and seamlessly connected with the orthographic projection of the backlight module 30 on the inner surface 22; the backlight module 30 is bent and includes a first segment 321 and a second segment 322 connected to each other, the first segment 321 is parallel to and attached to the display panel 20, the second segment 322 is inclined to the display panel 20, and a gap space 31 is formed between the second segment 322 of the backlight module 30 and the inner surface 22 of the display panel 20; the detection signal emitted by the emitter 41 of the fingerprint module can enter the display panel 20 through the gap space, and the detection signal reflected by the finger above the fingerprint detection area 203 can also reach the surface of the receiver 42 through the gap. Because of the seamless connection, the area of the backlight module 30 in the electronic device 100 for identifying fingerprints under the screen is larger, which is beneficial to increasing the display area of the electronic device 100 for identifying fingerprints under the screen; the first segment 321 is attached to the display panel 20 in parallel, so that the thickness of the display screen assembly 200 at the position corresponding to the first segment 321 is smaller, and thus some space of the electronic device 100 for fingerprint identification under the screen can be saved for arranging other components, thereby being beneficial to the lightness and thinness of the electronic device for fingerprint identification under the screen; and the second segment 322 is disposed obliquely so as to form a gap with the display panel 20, thereby allowing a detection signal to pass therethrough.
As shown in fig. 7, the electronic device for identifying fingerprints of the fifth embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the difference is that: in the fifth embodiment, the display panel 20 is provided with a receiving groove 204 on the non-display area 202, and the fingerprint module 40 is partially received in the receiving groove 204, so that the height of the fingerprint module 40 protruding from the display panel 20 is reduced, the inclined angle between the backlight module 30 and the inner surface 22 of the display panel 20 is also reduced, the overall thickness of the display screen assembly 200 is also reduced, and the electronic device 100 for identifying fingerprints under the screen is advantageously thinned. The detection signal emitted by the emitter 41 of the fingerprint module can partially enter the display panel 20 through the gap space 31, partially enter the display panel 20 directly from the sidewall of the receiving cavity 204, and the detection signal reflected by the finger above the fingerprint detection region 203 can also partially reach the surface of the receiver 42 through the gap space and partially directly from the sidewall of the receiving cavity 204.
In this embodiment, the backlight module 30 is flat as shown in the first embodiment; it is understood that the backlight module 30 may also be arranged as in the second embodiment, the third embodiment or the fourth embodiment.
As shown in fig. 8 to 10, an electronic device for identifying fingerprints of the sixth embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the difference is that: in the sixth embodiment, the side 403 is a surface perpendicular to the display panel 20; a plurality of grooves 4031 are formed in the side surface 403, and each groove 4031 extends from the upper surface 401 and the side surface 403 of the fingerprint module 40 to the inside of the fingerprint module 40; an inner side surface 4032 of each groove 4031 is inclined relative to the side surface 403 and is inclined towards the fingerprint detection region 203, and the transmitter 41 and the receiver 42 are correspondingly accommodated in the grooves 4031 and are embedded in the side surface 403, so that the overall volume of the fingerprint module 40 is small; the inner side surface 4032 of the groove 4031 is inclined with respect to the side surface 403, so that the transmitter 41 and the receiver 42 can transmit and receive detection signals at proper inclination angles, that is, the transmitting direction of the transmitter 41 and the receiving surface of the receiver 42 can be inclined with respect to the inner surface 22. It is understood that the plurality of grooves 4031 may also be interconnected to form a longer groove.
As shown in fig. 11, the electronic device for identifying fingerprints of the seventh embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the difference is that: in the seventh embodiment, the number of the transmitters 41 is one, the number of the receivers 42 is one, and the orthographic projections of the two transmitters 41 on the display panel 20 are approximately located on two sides of a connecting line between the center of the fingerprint detection area 203 and the center of the fingerprint module 40, so that the overall size of the fingerprint module 40 can be small.
It is understood that the arrangement of the transmitter 41 and the receiver 42 of the present embodiment can also be combined with any one of the second to sixth embodiments.
As shown in fig. 12, the electronic device for identifying fingerprints of the eighth embodiment of the present application is substantially the same as the electronic device for identifying fingerprints of the first embodiment, and the difference is that: in the eighth embodiment, the number of the transmitters 41 is one, the number of the receivers 42 is two, two of the receivers 42 are respectively disposed on two sides of the transmitter 41, the orthographic projection of the transmitter 41 on the display panel 20 is approximately located on a connecting line between the center of the fingerprint detection area 203 and the center of the orthographic projection of the fingerprint module 40 on the display panel 20, and the orthographic projection of two of the receivers 42 on the display panel 20 is located on two sides of a connecting line between the center of the fingerprint detection area 203 and the center of the orthographic projection of the fingerprint module 40 on the display panel 20; the electronic device 100 may further comprise a processor for combining the images received by the two receivers 42, and the two receivers 42 may be arranged to improve the accuracy of fingerprint identification.
It is understood that the arrangement of the transmitter 41 and the receiver 42 of the present embodiment can also be combined with any one of the second to sixth embodiments.
It is to be understood that the parts not described in the above embodiments can be referred to the description of the first embodiment.
while the foregoing is directed to embodiments of the present application, it will be appreciated by those skilled in the art that various changes and modifications may be made without departing from the principles of the application, and it is intended that such changes and modifications be covered by the scope of the application.
Claims (16)
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:
The display panel comprises a display area and a non-display area, and the display area of the display panel is provided with a fingerprint detection area;
The backlight module is overlapped with the display panel; and
The fingerprint module is positioned in a non-display area of the display panel, and a transmitter and a receiver are arranged on the side surface, close to the fingerprint detection area, of the fingerprint module; the transmitter and the receiver are arranged at intervals of a predetermined distance on the side surface in a direction parallel to the extending direction of the display panel; the emitter is used for emitting a detection signal to a fingerprint detection area of the display panel; the receiver is used for receiving the detection signal reflected by the finger above the fingerprint detection area and generating fingerprint information of the finger according to the received detection signal.
2. The electronic device for identifying fingerprints under screen of claim 1, wherein the backlight module comprises a light-emitting portion and an encapsulating portion connected to the light-emitting portion, the light-emitting portion and the encapsulating portion respectively corresponding to a display area and a non-display area of the display panel; a gap space is formed between the backlight module and the display panel; the fingerprint module is contained in the clearance space.
3. The electronic device for identifying fingerprints under screen of claim 2, wherein the backlight module is in a flat plate shape, the backlight module forms an inclined angle with an inner surface of the display panel, and a distance between a packaging part of the backlight module and the display panel is greater than a distance between a light emitting part of the backlight module and the display panel.
4. The electronic device for identifying fingerprints under screen of claim 2, wherein the backlight module is bent, and the light-emitting portion of the backlight module comprises a first segment attached to the display panel in parallel and a second segment inclined to the display panel, and the second segment is connected between the first segment and the package portion; the packaging part of the backlight module is parallel to and spaced from the display panel; the second section of the backlight module, the packaging part and the inner surface of the display panel form the gap space.
5. The electronic device for identifying fingerprints under the screen of claim 1, wherein an orthographic projection of the backlight module on the inner surface of the display panel falls into the display area, and the orthographic projection of the fingerprint module on the inner surface of the display panel is staggered from the orthographic projection of the backlight module on the inner surface of the display panel to form a gap space; the interstitial spaces are used to provide an optical pathway for the probing signals.
6. The electronic device for identifying fingerprints under the screen of claim 1, wherein the orthographic projection of the backlight module on the inner surface of the display panel falls into the display area, and the orthographic projection of the fingerprint module on the inner surface of the display panel is staggered and seamlessly connected with the orthographic projection of the backlight module on the inner surface of the display panel; the backlight module is bent and comprises a first section and a second section which are connected, the first section is attached to the display panel in parallel, the second section is inclined to the display panel, and a gap space is formed between the second section of the backlight module and the inner surface of the display panel and used for providing an optical path for the detection signal.
7. the electronic device for identifying fingerprints under screen of any one of claims 1 to 6, wherein the display panel is provided with a receiving groove on the non-display area, and the fingerprint module is partially received in the receiving groove.
8. the electronic device according to any one of claims 1 to 6, wherein the fingerprint module comprises an upper surface facing the display panel, a lower surface opposite to the upper surface, and the side surface connected between the upper surface and the lower surface; the side surface is an inclined surface inclined toward the fingerprint detection area of the display panel.
9. The electronic device for underscreen fingerprint identification of claim 8, wherein a groove is disposed on the side surface, and the transmitter and the receiver are both received in the groove; the bottom surface of the groove is inclined with respect to the side surface or parallel to the side surface.
10. The electronic device according to any one of claims 1 to 6, wherein the fingerprint module comprises an upper surface facing the display panel, a lower surface opposite to the upper surface, and the side surface connected between the upper surface and the lower surface; the side surface is perpendicular to the extending direction of the display panel; the side surface is provided with a groove, and the groove is sunken from the upper surface and the side surface to the interior of the fingerprint module; the emitter and the receiver are accommodated in the groove; the bottom surface of the groove is inclined toward the fingerprint detection area of the display panel.
11. The electronic device for underscreen fingerprint identification according to any one of claims 1 to 10, wherein a transmission direction of the transmitter is inclined toward a receiving surface of the receiver so as to form an inclined angle with the receiving surface of the receiver.
12. The electronic device for identifying fingerprints under screen of any one of claims 1 to 11, wherein the number of the transmitters and the number of the receivers are one, and the orthographic projections of the two transmitters on the display panel are located on two sides of a connecting line between the center of the fingerprint detection area and the center of the orthographic projection of the fingerprint module on the display panel.
13. The electronic device according to any one of claims 1 to 11, wherein the number of the transmitters is two, the number of the receivers is one, an orthogonal projection of the receivers on the display panel is located on a connecting line between a center of the fingerprint detection area and a center of an orthogonal projection of the fingerprint module on the display panel, and orthogonal projections of the two transmitters on the display panel are located on two sides of a connecting line between a center of the fingerprint detection area and a center of an orthogonal projection of the fingerprint module on the display panel.
14. The electronic device for identifying fingerprints under screen of any one of claims 1 to 11, wherein the number of the transmitters is one, the number of the receivers is two, an orthographic projection of the transmitter on the display panel is located on a connecting line between a center of the fingerprint detection area and a center of an orthographic projection of the fingerprint module on the display panel, and orthographic projections of the two receivers on the display panel are located on two sides of a connecting line between the center of the fingerprint detection area and the center of the orthographic projection of the fingerprint module on the display panel; the underscreen fingerprint recognition electronic device also includes a processor for compositing images received by the two receivers together.
15. The electronic device of any of claims 1-14, wherein the fingerprint module is a package comprising a substrate, a flexible board, and an encapsulation layer, the encapsulation layer encapsulates and fixes the transmitter and the receiver on the substrate, and the flexible board is electrically connected to the transmitter and the receiver for electrically connecting the transmitter and the receiver with other components.
16. a display screen assembly, comprising:
The display panel comprises a display area and a non-display area, and the display area of the display panel is provided with a fingerprint detection area;
The backlight module is overlapped with the display panel; and
The fingerprint module is positioned in a non-display area of the display panel, and a transmitter and a receiver are arranged on the side surface, close to the fingerprint detection area, of the fingerprint module; the transmitter and the receiver are arranged on the side face at intervals of a preset distance along the direction parallel to the extending direction of the display panel; the emitter is used for emitting a detection signal to a fingerprint detection area of the display panel; the receiver is used for receiving the detection signal reflected by the finger above the fingerprint detection area and generating fingerprint information of the finger according to the received detection signal.
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| CN201910882012.4A CN110569825B (en) | 2019-09-18 | 2019-09-18 | Display screen assembly and electronic equipment for identifying fingerprints under screen |
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