CN108615005B - Fingerprint identification assembly, display device and electronic device - Google Patents
Fingerprint identification assembly, display device and electronic device Download PDFInfo
- Publication number
- CN108615005B CN108615005B CN201810364656.XA CN201810364656A CN108615005B CN 108615005 B CN108615005 B CN 108615005B CN 201810364656 A CN201810364656 A CN 201810364656A CN 108615005 B CN108615005 B CN 108615005B
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- guide panel
- light guide
- light source
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Image Input (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a fingerprint identification assembly, which comprises a light guide panel, at least one active light source and at least one fingerprint module, wherein the at least one active light source is arranged on one side of the light guide panel, the at least one fingerprint module is arranged on the other side, opposite to the active light source, of the light guide panel, a fingerprint contact surface used for pressing a fingerprint is arranged on the light guide panel, light rays emitted by the at least one active light source are reflected by the inside of the light guide panel, irradiate the fingerprint contact surface on which the fingerprint to be identified is pressed and are totally reflected with the fingerprint to be identified, the totally reflected light rays are incident to the at least one fingerprint module, and the at least one fingerprint module acquires and identifies a fingerprint image according to the totally reflected light rays. The invention also provides a display device provided with the fingerprint identification assembly and an electronic device provided with the display device.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a fingerprint identification assembly, a display device having the fingerprint identification assembly, and an electronic device having the display device.
Background
With the rapid development of biometric identification technology, fingerprint identification technology has been widely applied to electronic devices such as smart phones and tablet computers. The existing fingerprint identification component can be mainly divided into a capacitance type fingerprint identification component, an optical type fingerprint identification component, a thermal type fingerprint identification component, an ultrasonic fingerprint identification component and the like, and the optical type fingerprint identification component becomes the most widely applied fingerprint identification component due to factors such as low manufacturing cost, high yield and the like.
The fingerprint identification module of the fingerprint identification component on the existing smart phone is usually arranged on the front face of the smart phone, so that the fingerprint identification component occupies the area of the display screen, and the screen occupation ratio of the smart phone is not improved.
Disclosure of Invention
The invention aims to provide a fingerprint identification component capable of improving the screen occupation ratio of an electronic device, a display device provided with the fingerprint identification component and the electronic device provided with the display device.
In order to solve the technical problem, the present invention provides a fingerprint identification assembly, which includes a light guide panel, at least one active light source and at least one fingerprint module, wherein the at least one active light source is disposed on one side of the light guide panel, the at least one fingerprint module is disposed on the other side of the light guide panel opposite to the active light source, a fingerprint contact surface for pressing a fingerprint is disposed on the light guide panel, light emitted by the at least one active light source is reflected by the light guide panel, irradiates the fingerprint contact surface on which a fingerprint to be identified is pressed, and is totally reflected with the fingerprint to be identified, the totally reflected light is incident to the at least one fingerprint module, and the at least one fingerprint module acquires and identifies a fingerprint image according to the totally reflected light.
The invention also provides a display device, which comprises a display screen and a fingerprint identification component, wherein the fingerprint identification component comprises a light guide panel, at least one active light source and at least one fingerprint module, the at least one active light source is arranged on one side of the light guide panel, the at least one fingerprint module is arranged on the other side, opposite to the active light source, of the light guide panel, a fingerprint contact surface used for pressing fingerprints is arranged on the light guide panel, light rays emitted by the at least one active light source are reflected by the inside of the light guide panel, irradiate the fingerprint contact surface pressed with the fingerprints to be identified and are totally reflected with the fingerprints to be identified, the totally reflected light rays are incident to the at least one fingerprint module, and the at least one fingerprint module acquires and identifies fingerprint images according to the totally reflected light rays.
The invention also provides an electronic device, which comprises a shell, a mainboard and a display device, wherein the mainboard is arranged in the shell, the display device is arranged on the shell, the display device is electrically connected with the mainboard, the fingerprint identification assembly comprises a light guide panel, at least one active light source and at least one fingerprint module, the at least one active light source is arranged on one side of the light guide panel, the at least one fingerprint module is arranged on the other side of the light guide panel opposite to the active light source, a fingerprint contact surface used for pressing fingerprints is arranged on the light guide panel, light emitted by the at least one active light source is reflected by the inside of the light guide panel, irradiates on the fingerprint contact surface pressed with the fingerprints to be identified and is totally reflected with the fingerprints to be identified, and the totally reflected light is incident to the at least one fingerprint module, and at least one fingerprint module acquires and identifies a fingerprint image according to the totally reflected light.
The display device is provided with the light guide panel, the two opposite sides of the light guide panel are respectively provided with the active light source and the fingerprint module, light rays emitted by the active light source are reflected by the inside of the light guide panel, irradiate on the fingerprint contact surface pressed with a fingerprint to be identified and are totally reflected with the fingerprint to be identified, the total reflection is reflected by the inside of the light guide panel and then enters the fingerprint module, and the fingerprint module acquires and identifies a fingerprint image according to the totally reflected light rays. Because the fingerprint module utilizes the apron is as leading the light panel, active light source reaches the fingerprint module is located respectively lead the relative both sides of light panel, consequently, the fingerprint module does not occupy the area of display screen is favorable to improving the screen and accounts for the ratio.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 some embodiments of the present invention, 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 a display device according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of a portion II in fig. 1.
Fig. 3 is a schematic front structural diagram of a display device according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a display device according to a second embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a display device according to a third embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an electronic device according to a fourth embodiment of the invention.
Fig. 7 is a schematic structural diagram of an electronic device according to a fifth embodiment of the invention.
Fig. 8 is a schematic structural diagram of an electronic device according to a sixth embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "thickness" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and do not imply or indicate that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention; fig. 2 is an enlarged view of a portion II in fig. 1. The present invention provides a display device 10, which comprises a display screen 20 and a fingerprint identification assembly 40, wherein the fingerprint identification assembly 40 comprises a light guide panel 42, at least one active light source 44 and at least one fingerprint module 46. At least one active light source 44 is disposed adjacent to one side of the light guide panel 42, and at least one fingerprint module 46 is disposed at the other side of the light guide panel 42 corresponding to the at least one active light source 44, that is, the at least one active light source 44 and the at least one fingerprint module 46 are respectively disposed at two opposite sides of the light guide panel 42. Light guide panel 42 is kept away from the side of display screen 20 sets up to a fingerprint contact surface 421 that is used for the fingerprint to press, light guide panel 42 dorsad the side of fingerprint contact surface 421 is medial surface 422, display screen 20 is located light guide panel 42 dorsad the one side of fingerprint contact surface 421. The light emitted by at least one active light source 44 is reflected by the interior of the light guide panel 42, irradiates the fingerprint contact surface 421 on which the fingerprint to be recognized is pressed, and is totally reflected with the fingerprint to be recognized, the total reflection is incident to at least one fingerprint module 46 through the interior of the light guide panel 42, and the at least one fingerprint module 46 acquires and recognizes a fingerprint image according to the totally reflected light.
The display device 10 of the present invention may be installed on any electronic device, that is, the display device 10 may be installed on an intelligent device such as a smart phone, a tablet computer, an electronic reader, a notebook computer, a vehicle-mounted device, a network television, and a wearable device. In this embodiment, the display device 10 is used in a smart phone.
In this embodiment, the light guide panel 42 serves as a cover plate on the display screen 20 of the display device 10, the light guide panel 42 includes a protective layer 428 and a sensing layer 429, the sensing layer 429 is disposed on a side surface of the protective layer 428 facing away from the fingerprint contact surface 421, that is, the sensing layer 429 is disposed on the inner side surface 422; the fingerprint contact surface 421 is disposed on a side of the protection layer 428 facing away from the sensing layer 429.
The protective layer 428 is a transparent layer, and preferably, the protective layer 428 is a tempered glass layer. The thickness of the toughened glass layer is more than 0.8mm, and preferably, the thickness of the toughened glass layer is 0.9 mm.
The display screen 20 may be an OLED display screen or an LCD display screen, and in this embodiment, the display screen 20 is an OLED display screen.
At least one of the active light sources 44 is an infrared light source, and preferably, at least one of the active light sources 44 is a near infrared light source.
The display screen 20 of the display device 10 of the present invention is covered with the light guide panel 42, two opposite sides of the light guide panel 42 are respectively provided with at least one active light source 44 and at least one fingerprint module 46, light emitted from at least one active light source 44 is reflected by the inside of the light guide panel 42, irradiates the fingerprint contact surface 421 pressed with a fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the total reflection is incident to at least one fingerprint module 46 through the inside of the light guide panel 42, and at least one fingerprint module 46 acquires and identifies a fingerprint image according to the totally reflected light. Because the light guide panel 42 is a cover plate of the display screen 20, at least one active light source 44 and at least one fingerprint module 46 are respectively located at two opposite sides of the light guide panel 42, the fingerprint module 46 does not occupy the area of the display screen 20, which is beneficial to improving the screen occupation ratio.
The at least one active light source 44 and the at least one fingerprint module 46 are located on a side of the light guide panel 42 facing away from the fingerprint contact surface 421, that is, the display screen 20, the at least one active light source 44 and the at least one fingerprint module 46 are located on a same side of the light guide panel 42. In this embodiment, the display screen 20 is located between the light guide panel 42 and at least one of the active light sources 44 and at least one of the fingerprint modules 46, that is, the inner side 422 of the light guide panel 42 covers the display screen 20.
An inclined first reflection surface 423 is disposed on the light guide panel 42 opposite to the at least one active light source 44, and light emitted by the at least one active light source 44 is reflected by the first reflection surface 423 and then reflected inside the light guide panel 42. The first reflection surface 423 is located at an intersection of the fingerprint contact surface 421 of the light guide panel 42 and a side surface of the light guide panel 42 adjacent to at least one of the active light sources 44, that is, the first reflection surface 423 is a chamfer of an intersection of the fingerprint contact surface 421 and a side surface of the light guide panel 42 adjacent to at least one of the active light sources 44. The included angle a between the first reflecting surface 423 and the fingerprint contact surface 421 is greater than 0 degree and less than 90 degrees, and preferably, the included angle a is in a range of 30 to 60 degrees. In this embodiment, the included angle a is 45 degrees.
The first reflecting surface 423 has a smooth surface, that is, the first reflecting surface 423 has a small surface roughness value. In this embodiment, the surface roughness Ra of the first reflecting surface 423 is less than 10 um.
An inclined second reflecting surface 425 is arranged on the light guide panel 42 opposite to at least one fingerprint module 46, light emitted by at least one active light source 44 is reflected by the first reflecting surface 423 and then reflected inside the light guide panel 42, irradiates the fingerprint contact surface 421 and is totally reflected with the fingerprint to be identified, the total reflection irradiates the second reflecting surface 425 through the inside of the light guide panel 42, and the totally reflected light is reflected by the second reflecting surface 425 and then enters the fingerprint module 46. The second reflecting surface 425 is located at the intersection of the fingerprint contact surface 421 and the side surface of the light guide panel 42 adjacent to at least one of the fingerprint modules 46, that is, the second reflecting surface 425 is a chamfer of the intersection of the fingerprint contact surface 421 and the side surface of the light guide panel 42 adjacent to at least one of the fingerprint modules 46. The included angle B between the second reflective surface 425 and the fingerprint contact surface 421 ranges from greater than 0 degrees to less than 90 degrees, and preferably ranges from 30 degrees to 60 degrees. In this embodiment, the included angle B is 45 degrees.
The surface of the second reflective surface 425 is smooth, i.e., the surface roughness of the second reflective surface 425 is low. In this embodiment, the surface roughness Ra of the second reflecting surface 425 is less than 10 um.
The first reflecting surface 423 and the second reflecting surface 425 are coated with a reflecting layer 426, the reflecting layer 426 can make the first reflecting surface 423 and the second reflecting surface 425 have high reflectivity, the reflecting layer 426 can be an aluminum powder layer, a silver powder layer or an infrared reflecting pigment layer, etc.,
in this embodiment, the first reflective surface 423 and the second reflective surface 425 are coated with aluminum powder layers.
The surface of the reflective layer 426 facing the light guide panel 42 is smooth, that is, the surface roughness value of the reflective layer 426 facing the light guide panel 42 is small, in this embodiment, the surface roughness Ra of the reflective layer 426 facing the light guide panel 42 is less than 10 um.
A mask layer 427 is disposed on a surface of the light guide panel 42 facing away from the active light source 44 and the fingerprint module 46, the visible light can transmit through the mask layer 427, and the transmittance of the infrared light on the mask layer 427 is greater than 80%. The cover layer 427 is used to block, i.e., hide the internal structure of the display device 10 from the outside surface of the light guide panel 42.
In this embodiment, a mask layer 427 is coated on the fingerprint contact surface 421 of the light guide panel 42, and two sides of the mask layer 427 are connected to the two reflective layers 426. The shielding layer 427 is a light-colored transparent ink layer formed on the light guide panel 42 by silk-screen printing, and diffusion particles are not doped in the ink layer.
In other embodiments, the masking layer 427 may be applied only on a side of the protection layer 428 opposite to the sensing layer 429 and corresponding to at least one of the active light sources 44 and at least one of the fingerprint modules 46.
In other embodiments, the covering layer 427 may be coated on the side of the light guide panel 42 opposite to the fingerprint contact surface 421, or both sides of the light guide panel 42 opposite to each other may be provided with the covering layer 427.
In other embodiments, the decoration layer 427 may be disposed on the light guide panel 42 by inkjet or the like.
At least one of the fingerprint modules 46 includes an image sensor 461 and a fingerprint controller 462, at least one of the light beams emitted from the active light source 44 enters the light guide panel 42 after being reflected by the first reflecting surface 423, and is repeatedly reflected between the fingerprint contact surface 421 and the inner side surface 422 in the light guide panel 42, when the light beam irradiates on the fingerprint contact surface 421 pressed with a fingerprint to be recognized, the light beam can be totally reflected with the fingerprint to be recognized, the total reflection is repeatedly reflected between the fingerprint contact surface 421 and the inner side surface 422 of the light guide panel 42 and then is incident on the second reflecting surface 425, or the total reflection is directly incident on the second reflecting surface 425, the second reflecting surface 425 reflects the totally reflected light beam to the image sensor 461, the image sensor 461 receives the totally reflected light beam and acquires a fingerprint image, the fingerprint controller 462 identifies the fingerprint image transmitted by the image sensor 461.
In use, the display device 10 is installed on a housing of an electronic device, such as a housing of a smart phone, at least one active light source 44 and at least one fingerprint module 46 are respectively disposed on two opposite sidewalls of the housing, the display screen 20 is disposed in the housing, and the light guide panel 42 covers the display screen 20. A finger of a fingerprint to be identified contacts the fingerprint contact surface 421 of the light guide panel 42, the sensing layer 429 of the light guide panel 42 sends a signal to the fingerprint controller 462, the fingerprint controller 462 receives the signal and controls at least one active light source 44 to be turned on, light emitted by at least one active light source 44 enters the inside of the light guide panel 42 after being reflected by the first reflecting surface 423, is reflected inside the light guide panel 42, irradiates the fingerprint contact surface 421 pressed with the fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the total reflection is repeatedly reflected between the fingerprint contact surface 421 and the inner side surface 422 of the light guide panel 42 and then is incident on the second reflecting surface 425, or the total reflection is directly incident on the second reflecting surface 425, the second reflecting surface 425 reflects the totally reflected light to the image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Referring to fig. 3, fig. 3 is a schematic front structure diagram of a display device according to a first embodiment of the invention. In the first embodiment, the left and right sides of the light guide panel 42 are respectively provided with a plurality of active light sources 44 and a plurality of fingerprint modules 46, and the plurality of active light sources 44 and the plurality of fingerprint modules 46 are in one-to-one correspondence. The first reflecting surface 423 and the second reflecting surface 425 are respectively disposed at intersections of the fingerprint contact surface 421 and the left and right side surfaces of the light guide panel 42, that is, the first reflecting surface 423 and the second reflecting surface 425 are respectively chamfers at intersections of the fingerprint contact surface 421 and the left and right side surfaces of the light guide panel 42.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a display device according to a second embodiment of the present invention. The structure of the second embodiment of the display device of the present invention is similar to that of the first embodiment, except that: in the second embodiment, the top and the bottom of the light guide panel 42 are respectively disposed with a plurality of active light sources 44 and a plurality of fingerprint modules 46, and the plurality of active light sources 44 and the plurality of fingerprint modules 46 are in one-to-one correspondence. The first reflective surface and the second reflective surface are respectively disposed at the intersections of the top surface and the bottom surface of the light guide panel 42 and the fingerprint contact surface 421, that is, the first reflective surface and the second reflective surface are respectively chamfers at the intersections of the top surface and the bottom surface of the light guide panel 42 and the fingerprint contact surface 421.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a display device according to a third embodiment of the present invention. The structure of the third embodiment of the display device of the present invention is similar to that of the display device of the first embodiment, except that: in the third embodiment, two active light sources 44 are disposed at two opposite corners of the top of the light guide panel 42, two fingerprint modules 46 are disposed at two opposite corners of the bottom of the light guide panel 42, and the two active light sources 44 and the two fingerprint modules 46 are in one-to-one correspondence. The first reflective surface and the second reflective surface are respectively disposed at the intersection of the top surface and the bottom surface of the light guide panel 42 and the fingerprint contact surface 421, that is, the first reflective surface and the second reflective surface are respectively chamfers of the top surface and the bottom surface of the light guide panel 42 and the fingerprint contact surface 421.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to a fourth embodiment of the invention. The electronic device 100 provided by the present invention includes a housing 50, a main board 60 disposed in the housing 50, and the display device 10, wherein the display device 10 is disposed on the housing 50, and the display device 10 is electrically connected to the main board 60.
The housing 50 includes a middle frame 52, the middle frame 52 includes two opposite sidewalls 520, and a supporting plate 525 connected between the two sidewalls 520. The display screen 20 of the display device 10 is disposed on the supporting plate 525 and located between the two side walls 520, and the main board 60 is disposed on one side of the supporting plate 525 back to the display screen 20 and located between the two side walls 520. The active light source 44 and the fingerprint module 46 are respectively disposed on the two sidewalls 520, the light guide panel 42 is covered on the display screen 20, and the light guide panel 42 is disposed between the two sidewalls 520. The display screen 20 is located between the light guide panel 42 and the active light source 44 and the fingerprint module 46.
The side surfaces of the two side walls 520 facing the light guide panel 42 are respectively provided with a receiving hole 521, and the active light source 44 and the fingerprint module 46 are respectively received in the two receiving holes 521. The light emitted from the active light source 44 can be incident on the first reflecting surface 423, and the image sensor 461 can receive the total reflection reflected from the second reflecting surface 425.
When the electronic device 100 is used for fingerprint identification, a finger contacts the fingerprint contact surface 421 of the light guide panel 42, the sensing layer 429 of the light guide panel 42 sends a signal to the fingerprint controller 462, the fingerprint controller 462 receives the signal and controls the active light source 44 to be turned on to emit an infrared light to the first reflection surface 423, the infrared light is reflected by the first reflection surface 423 and enters the inside of the light guide panel 42, is reflected inside the light guide panel 42, irradiates the fingerprint contact surface 421 pressed with a fingerprint to be identified, and is totally reflected with the fingerprint to be identified, the total reflection is reflected by the inside of the light guide panel 42 and then irradiates the second reflection surface 425, or the totally reflected light directly irradiates the second reflection surface 425, the second reflection surface 425 irradiates the total reflection to the image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Because the active light source 44 and the fingerprint module 46 are respectively disposed in the two receiving holes 521 of the side wall 520, and the display screen 20 is located between the light guide panel 42 and the active light source 44 and the fingerprint module 46, the fingerprint identification assembly 40 does not occupy the area of the display screen 20, so as to improve the screen occupation ratio of the electronic device 100, and the active light source 44 and the fingerprint module 46 do not occupy the internal space of the housing 50, which is favorable for the layout of the electronic components inside the housing 50.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an electronic device according to a fifth embodiment of the invention. The structure of the electronic device of the fifth embodiment of the present invention is similar to that of the electronic device of the fourth embodiment, except that: in the fifth embodiment, the electronic device 100a has two receiving holes 521a respectively formed on the inner side surfaces of the two side walls 520, and the active light source 44 and the fingerprint module 46 are respectively received in the two receiving holes 521 a. A light-passing hole 523 communicated with the corresponding receiving hole 521a is formed in a side surface of each sidewall 520 facing the light guide panel 42, and the two light-passing holes 523 correspond to the first reflecting surface 423 and the second reflecting surface 425 respectively. The light emitted from the active light source 44 passes through the corresponding light-passing hole 523 and is incident on the first reflecting surface 423, and the totally reflected light reflected by the second reflecting surface 425 passes through the corresponding light-passing hole 523 and is incident on the image sensor 461. The aperture width of each light transmitting hole 523 is 1.1mm to 1.4mm, and in this embodiment, the aperture width of each light transmitting hole 523 is 1.4 mm.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an electronic device according to a sixth embodiment of the invention. The structure of the electronic device of the sixth embodiment of the present invention is similar to that of the electronic device of the fourth embodiment, except that: in the sixth embodiment, the fingerprint identification module 40 of the electronic device 100b is disposed on the back of the housing 50, that is, the light guide panel 42 of the fingerprint identification module 40 serves as a back cover of the electronic device 100b, the light guide panel 42 is disposed on a side of the housing 50 facing away from the display screen 20, and the light guide panel 42 is located between the two side walls 520. Two accommodating holes 524 are formed in the side surfaces of the two side walls 520 facing away from the display screen 20, and the active light source 44 and the fingerprint module 46 are accommodated in the two accommodating holes 521 respectively. The electronic device 100b further includes a front panel 80 covering the display screen 20, wherein the front panel 80 is used for protecting the display screen 20. The light emitted from the active light source 44 can be incident on the first reflecting surface 423, and the image sensor 461 can receive the total reflected light reflected from the second reflecting surface 425.
When the fingerprint recognition of the electronic device 100b of the sixth embodiment is used, a finger touches the fingerprint contact surface 421 at the back of the electronic device 100b, the sensing layer 429 of the light guide panel 42 sends a signal to the fingerprint controller 462, the fingerprint controller 462 receives the signal and controls the active light source 44 to turn on to emit an infrared light to the first reflection surface 423, the infrared light enters the inside of the light guide panel 42 after being reflected by the first reflection surface 423, is reflected inside the light guide panel 42, irradiates on the fingerprint contact surface 421 pressed with a fingerprint to be recognized, and is totally reflected with the fingerprint to be recognized, the total reflection is incident on the second reflection surface 425 after being reflected inside the light guide panel 42, or the total reflected light is directly incident on the second reflection surface 425, the second reflection surface 425 reflects the totally reflected light to the image sensor 461, the image sensor 461 receives the totally reflected light and obtains a fingerprint image, and the fingerprint controller 462 identifies the fingerprint image sent by the image sensor 461.
Since the active light source 44 and the fingerprint module 46 are respectively accommodated in the two accommodating holes 521 on the side surfaces of the side walls 520 facing away from the display screen 20, and the light guide panel 42 serves as a rear cover plate of the electronic device 100b, that is, the light guide panel 42 is disposed on the side of the housing 50 facing away from the display screen 20. Therefore, the fingerprint identification module 40 does not occupy the area of the display screen 20, so as to increase the screen occupation ratio of the electronic device 100, and the active light source 44 and the fingerprint module 46 do not occupy the internal space of the housing 50, which is favorable for the layout of the electronic components inside the housing 50.
The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.
Claims (17)
1. A fingerprint identification component is characterized by comprising a light guide panel, at least one active light source and at least one fingerprint module, wherein the at least one active light source is arranged on one side of the light guide panel, the at least one fingerprint module is arranged on the other side of the light guide panel opposite to the active light source, a fingerprint contact surface used for pressing a fingerprint is arranged on the light guide panel, an inclined first reflecting surface is arranged on the light guide panel and is opposite to the at least one active light source, the first reflecting surface is positioned at the intersection of the fingerprint contact surface of the light guide panel and the side surface of the light guide panel adjacent to the at least one active light source, light rays emitted by the at least one active light source are reflected by the first reflecting surface and then are incident into the light guide panel, and light rays emitted by the at least one active light source are reflected by the inside of the light guide panel, the fingerprint identification device is characterized in that the fingerprint identification device irradiates on a fingerprint contact surface pressed with a fingerprint to be identified, the fingerprint contact surface and the fingerprint to be identified are totally reflected, totally reflected light is incident to at least one fingerprint module, and the fingerprint module acquires and identifies a fingerprint image according to the totally reflected light.
2. The assembly of claim 1, wherein the at least one active light source and the at least one fingerprint module are disposed on a side of the light guide panel opposite to the fingerprint contact surface.
3. The assembly of claim 2, wherein the light guide panel is provided with a second inclined reflective surface facing at least one of the fingerprint modules, and the totally reflected light is reflected by the second reflective surface and then enters at least one of the fingerprint modules.
4. The fingerprint identification assembly of claim 3, wherein the first reflective surface and the second reflective surface are coated with a reflective layer.
5. The fingerprint identification assembly of claim 4, wherein the reflective layer is an aluminum powder layer, a silver powder layer, or an infrared reflective pigment layer.
6. The fingerprint identification assembly of claim 4, wherein a surface roughness of the reflective layer facing the light guide panel is less than 10 um.
7. The fingerprint identification assembly of claim 1, wherein the active light source is a near infrared light source.
8. The assembly of claim 7, wherein a mask layer is disposed on a surface of the light guide panel facing away from the at least one active light source and the at least one fingerprint module, visible light can pass through the mask layer, and infrared light has a transmittance of greater than 80% through the mask layer.
9. The fingerprint identification assembly of claim 8, wherein the mask layer is a light-transmissive ink layer printed on the light guide panel by silk-screening, the ink layer being free of diffusion particles.
10. The assembly of claim 1, wherein at least one of the fingerprint modules comprises an image sensor and a fingerprint controller, the image sensor is configured to receive the totally reflected light and obtain a fingerprint image, and the fingerprint controller is configured to identify the fingerprint image sent by the image sensor.
11. The assembly of claim 10, wherein the light guide panel comprises a protection layer and a sensing layer, the sensing layer is disposed on a side of the light guide panel opposite to the fingerprint contact surface, and when the fingerprint to be recognized contacts the fingerprint contact surface of the light guide panel, the sensing layer sends a signal to the fingerprint controller, and the fingerprint controller controls at least one of the active light sources to emit light.
12. The fingerprint identification assembly of claim 11, wherein the protective layer is a tempered glass layer.
13. A display device, comprising a display screen and a fingerprint identification module according to any one of claims 1 to 11, wherein the active light source and the fingerprint module of the fingerprint identification module are respectively located at two opposite sides of the display screen.
14. An electronic device, comprising a housing, a main board disposed in the housing, and the display device according to claim 13, wherein the display device is disposed on the housing, and the display device is electrically connected to the main board.
15. The electronic device according to claim 14, wherein the housing includes two opposite sidewalls and a supporting plate connected between the two sidewalls, the display screen is disposed on the supporting plate, the main board is disposed on a side of the supporting plate opposite to the display screen, and the active light source and the fingerprint module are respectively disposed on the two sidewalls.
16. The electronic device according to claim 15, wherein two side walls facing the light guide panel are respectively formed with a receiving hole, and the active light source and the fingerprint module are respectively received in the two receiving holes.
17. An electronic device, comprising a housing, a display screen disposed on the housing, a main board disposed in the housing, and the fingerprint identification module according to any one of claims 1 to 11, wherein the fingerprint identification module is disposed on a back surface of the housing, and the light guide panel is disposed on a side of the housing opposite to the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810364656.XA CN108615005B (en) | 2018-04-20 | 2018-04-20 | Fingerprint identification assembly, display device and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810364656.XA CN108615005B (en) | 2018-04-20 | 2018-04-20 | Fingerprint identification assembly, display device and electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108615005A CN108615005A (en) | 2018-10-02 |
| CN108615005B true CN108615005B (en) | 2021-06-08 |
Family
ID=63660644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810364656.XA Active CN108615005B (en) | 2018-04-20 | 2018-04-20 | Fingerprint identification assembly, display device and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108615005B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2740689C1 (en) * | 2019-08-14 | 2021-01-19 | Бэйцзин Сяоми Мобайл Софтвэар Ко., Лтд. Наньцзин Бранч. | Fingerprint identification device and electronic device |
| CN110598657B (en) * | 2019-09-18 | 2022-04-22 | Oppo广东移动通信有限公司 | Optical fingerprint identification electronic equipment under screen |
| CN111491085B (en) * | 2020-04-21 | 2021-11-05 | Oppo广东移动通信有限公司 | Image sensor, imaging device, and electronic apparatus |
| CN111597912A (en) * | 2020-04-23 | 2020-08-28 | 昆山国显光电有限公司 | Display module and electronic equipment with same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202584158U (en) * | 2012-03-06 | 2012-12-05 | 上海博云信息技术有限公司 | Secondary total reflection fingerprint collector |
| CN107145868A (en) * | 2017-05-09 | 2017-09-08 | 上海箩箕技术有限公司 | Display module |
| CN107272262A (en) * | 2017-08-08 | 2017-10-20 | 京东方科技集团股份有限公司 | Backlight module and display device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103530615A (en) * | 2013-10-21 | 2014-01-22 | 珠海耀阳电子科技有限公司 | Optical fingerprint acquisition device and implementation method thereof |
| CN105260708B (en) * | 2015-09-25 | 2020-07-24 | 联想(北京)有限公司 | Detection device, electronic equipment and information processing method |
| CN105184282B (en) * | 2015-10-14 | 2019-04-23 | 京东方科技集团股份有限公司 | Optical finger print detection device and display equipment |
| CN105844233B (en) * | 2016-03-21 | 2022-07-05 | 京东方科技集团股份有限公司 | Fingerprint identification module, fingerprint identification device and display device |
| CN106933415B (en) * | 2017-03-07 | 2019-11-26 | Oppo广东移动通信有限公司 | A kind of sensor module and terminal |
| CN111414881B (en) * | 2017-05-12 | 2024-02-27 | Oppo广东移动通信有限公司 | Display device and mobile terminal |
| CN107247925A (en) * | 2017-05-19 | 2017-10-13 | 上海箩箕技术有限公司 | Display module |
-
2018
- 2018-04-20 CN CN201810364656.XA patent/CN108615005B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202584158U (en) * | 2012-03-06 | 2012-12-05 | 上海博云信息技术有限公司 | Secondary total reflection fingerprint collector |
| CN107145868A (en) * | 2017-05-09 | 2017-09-08 | 上海箩箕技术有限公司 | Display module |
| CN107272262A (en) * | 2017-08-08 | 2017-10-20 | 京东方科技集团股份有限公司 | Backlight module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108615005A (en) | 2018-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108596080B (en) | Fingerprint identification assembly, display device and electronic device | |
| CN108540605B (en) | Electronic device | |
| CN108615005B (en) | Fingerprint identification assembly, display device and electronic device | |
| EP3396588B1 (en) | Display screen, display device and mobile terminal | |
| EP3490233B1 (en) | Proximity sensor partially behind the touch-screen | |
| EP3605387B1 (en) | Optical fingerprint recognition assembly, display apparatus and mobile terminal | |
| CN109061946B (en) | Display screen assembly and electronic equipment | |
| CN212135453U (en) | Fingerprint detection device and electronic equipment | |
| CN108615004B (en) | Fingerprint identification assembly, display device and electronic device | |
| EP3373039B1 (en) | Sensor assembly and terminal | |
| CN109061925B (en) | Display screen assembly and electronic equipment | |
| US20110267314A1 (en) | Optical touch-sensing display module | |
| AU2018372440B2 (en) | Electronic device | |
| CN107978261B (en) | Electronic device | |
| CN111708224B (en) | Backlight module and display device | |
| CN108494901B (en) | Mobile terminal | |
| CN111371926B (en) | Display screen assembly and electronic equipment | |
| CN110738193B (en) | Electronic equipment | |
| CN110598657B (en) | Optical fingerprint identification electronic equipment under screen | |
| CN110730967A (en) | Fingerprint identification device and electronic equipment | |
| CN111801685B (en) | Fingerprint detection device and electronic equipment | |
| CN210038812U (en) | Fingerprint identification device under screen, fingerprint identification device and electronic equipment | |
| CN107608122B (en) | Display screen, functional assembly and mobile terminal | |
| CN107181837B (en) | Display and mobile terminal | |
| CN107945662B (en) | Display screen, display screen assembly and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |