CN107169452B - Fingerprint module, display device and mobile terminal - Google Patents

Fingerprint module, display device and mobile terminal Download PDF

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Publication number
CN107169452B
CN107169452B CN201710342708.9A CN201710342708A CN107169452B CN 107169452 B CN107169452 B CN 107169452B CN 201710342708 A CN201710342708 A CN 201710342708A CN 107169452 B CN107169452 B CN 107169452B
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China
Prior art keywords
fingerprint
display screen
display
fingerprint chip
extension
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CN201710342708.9A
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Chinese (zh)
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CN107169452A (en
Inventor
杨乐
张海平
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN201710342708.9A priority Critical patent/CN107169452B/en
Publication of CN107169452A publication Critical patent/CN107169452A/en
Priority to PCT/CN2018/085212 priority patent/WO2018205865A1/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/94Hardware or software architectures specially adapted for image or video understanding

Abstract

The invention discloses a fingerprint module, a display device and a mobile terminal, wherein the fingerprint module comprises a support piece and a fingerprint chip, the support piece comprises a main body and extension pieces extending from the periphery of the main body, the main body is provided with a containing groove, the extension direction of the extension pieces is vertical to the opening direction of the containing groove, the extension pieces are used for being attached to the back surface of a display screen, the fingerprint chip is fixed in the containing groove, and the fingerprint chip is parallel to the extension pieces. Through support piece is in the week side of main part extends the extension piece, the extension piece laminating is in the back of display screen to widen the laminating area of fingerprint module and display screen, and the extension piece parallels with the fingerprint chip, and then has guaranteed the fingerprint chip of fingerprint module with the depth of parallelism of display screen has improved the accurate nature of receiving and dispatching of fingerprint chip sensing signal, has increased fingerprint collection efficiency, has improved user experience.

Description

Fingerprint module, display device and mobile terminal
Technical Field
The invention relates to the field of electronic equipment, in particular to a fingerprint module, a display device and a mobile terminal.
Background
The front of present cell-phone often is equipped with fingerprint identification module and display screen, and the fingerprint identification module sets up outside the display screen, and convenience of customers operation just does not influence the display screen and shows. However, under this kind of structure, the screen that the fingerprint identification module has reduced the cell-phone accounts for than, consequently can improve the screen that the cell-phone accounts for than with fingerprint identification module and display screen coincide mutually. However, in the structure of fingerprint identification module and display screen coincide mutually, the fingerprint chip of fingerprint identification module often can't guarantee with the depth of parallelism of display screen, leads to the inductive signal of fingerprint chip to receive and dispatch the inaccuracy, influences fingerprint chip's fingerprint collection efficiency, reduces user experience.
Disclosure of Invention
The invention aims to provide a fingerprint module, a display device and a mobile terminal, which can improve user experience.
In order to solve the technical problem, the invention provides a fingerprint module, wherein the fingerprint module comprises a supporting piece and a fingerprint chip, the supporting piece comprises a main body and extending pieces extending from the periphery of the main body, the main body is provided with a containing groove, the extending direction of the extending pieces is perpendicular to the opening direction of the containing groove, the extending pieces are used for being attached to the back face of a display screen, the fingerprint chip is fixed in the containing groove, and the fingerprint chip is parallel to the extending pieces.
The invention further provides a display device, wherein the display device comprises the fingerprint module, the display device further comprises a display screen, the display screen is provided with a display surface and a back surface opposite to the display surface, the display surface is provided with a display area, and the extension sheet is attached to the back surface and is positioned in the display area in the orthographic projection of the display surface.
The invention also provides a mobile terminal, wherein the mobile terminal comprises the display device.
According to the fingerprint module, the display device and the mobile terminal, the extension pieces extend out of the periphery of the main body through the supporting pieces, the extension pieces are attached to the back face of the display screen, so that the attachment area of the fingerprint module and the display screen is enlarged, the extension pieces are parallel to the fingerprint chip, the parallelism between the fingerprint chip of the fingerprint module and the display screen is guaranteed, the receiving and sending accuracy of a fingerprint chip sensing signal is improved, the fingerprint acquisition efficiency is improved, and the user experience is improved.
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 cross-sectional view of a fingerprint module according to an embodiment of the present invention;
FIG. 2 is another schematic cross-sectional view of a fingerprint module according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a fingerprint module according to another embodiment of the present invention;
FIG. 4 is another schematic cross-sectional view of a fingerprint module according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a fingerprint module according to another embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a fingerprint module according to another embodiment of the present invention;
FIG. 7 is another schematic cross-sectional view of a fingerprint module according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a fingerprint module according to another embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a fingerprint module according to another embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a fingerprint module according to an embodiment of the present invention;
FIG. 11 is another schematic cross-sectional view of a fingerprint module according to an embodiment of the present invention;
fig. 12 is a schematic cross-sectional view of a display device provided in an embodiment of the present invention;
FIG. 13 is another schematic cross-sectional view of a display device according to an embodiment of the invention;
fig. 14 is a schematic cross-sectional view of a display device according to another embodiment of the present invention;
fig. 15 is a schematic cross-sectional view of a mobile terminal according to an embodiment of the present 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 "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, the present invention provides a fingerprint module 100, wherein the fingerprint module 100 includes a supporting member 10 and a fingerprint chip 20. The supporting member 10 includes a main body 11 and an extending piece 12 extending from the periphery of the main body 11, the main body 11 is provided with a containing groove 111, and the extending direction of the extending piece 12 is perpendicular to the opening direction of the containing groove 111. Extension piece 12 is used for laminating in the back of display screen 30, fingerprint chip 20 is fixed in hold groove 111, just fingerprint chip 20 is parallel extension piece 12. It can be understood that the fingerprint module 100 is applied to a mobile terminal, which may be a mobile phone, a tablet computer, or a notebook computer.
Through support piece 10 is in extension piece 12 is in week side of main part 11, extension piece 12 laminates in the back of display screen 30 to widen the laminating area of fingerprint module 100 and display screen 10, and extension piece 12 parallels with fingerprint chip 20, and then has guaranteed fingerprint module 100's fingerprint chip 20 with display screen 30's depth of parallelism has improved the accurate nature of the receiving and dispatching of fingerprint chip 20 sensing signal, has increased fingerprint collection efficiency, has improved user experience.
In this embodiment, the supporting member 10 is detachably connected to the fingerprint chip 20. The main body 11 and the extending piece 12 may be integrally provided. The main body 11 is in a rectangular block shape. The main body 11 includes a top surface 112 and a bottom surface 113 disposed opposite to the top surface 112, and a peripheral side surface 114 connected between the top surface 112 and the bottom surface 113. The accommodating groove 111 is opened from the top surface 112 to the bottom surface 113. The extending pieces 12 extend from the peripheral side surface 114 in a direction parallel to the top surface 112.
Referring to fig. 2, in an embodiment, the accommodating groove 111 penetrates from the top surface 112 to the bottom surface 113, and an opening of the accommodating groove 111 on the bottom surface 113 is used for passing through a flexible circuit board 20a connected to the fingerprint chip 20. The fingerprint chip 20 is fixed in the containing groove 111 in a clamping manner. The fingerprint chip 20 receives and transmits induction signals through the opening of the containing groove 111 on the top surface 112.
Referring to fig. 3, in an embodiment, the accommodating groove 111 is opened from the top surface 112 to the bottom surface 113, and the bottom surface of the accommodating groove 111 supports the fingerprint chip 20. The bottom surface of the accommodating groove 111 is provided with a through hole 115 facing the bottom surface 113. The through hole 115 is electrically connected to the circuit board 20a of the fingerprint chip 20.
In this embodiment, the fingerprint chip 20 is parallel to the extending sheet 12, and the extending sheet 12 is attached to the back surface of the display 30, and the fingerprint chip 20 is parallel to the display 30. The fingerprint chip 20 receives a fingerprint sensing signal of a user through the display screen 30, the fingerprint chip 20 is parallel to the display screen 30, and the user inputs a fingerprint through touching the display screen 30, so that the fingerprint chip 20 can be ensured to face the fingerprint of the user, and the fingerprint of the user can be effectively collected.
Further, referring to fig. 4, fig. 5 and fig. 6, the extending sheet 12 has a flat upper surface 121, a normal direction of the upper surface 121 is parallel to the opening direction of the accommodating groove 111, and the upper surface 121 is used for being attached to the back surface of the display screen 30.
In one embodiment, as shown in fig. 4, the upper surface 121 of the extending piece 12 is flush with the top surface 112 of the body 11. The upper surface 121 of extension piece 12 with the back of display screen 30 is laminated mutually, the top surface 112 of main part 11 with the back of display screen 30 is laminated mutually, thereby increases support piece 10 and the laminating area of display screen 30 effectively guarantee fingerprint chip 20 with the depth of parallelism of display screen 30.
In one embodiment, as shown in fig. 5, the distance from the top surface 121 to the bottom surface 113 of the extended sheet 12 is less than the distance from the top surface 112 to the bottom surface 113. When the upper surface 121 of the extending sheet 12 is attached to the back surface of the display screen 30, the top surface 112 of the main body 11 is accommodated in the groove on the back surface of the display screen 30, so that the structural stability of the extending sheet 12 and the display screen 30 is improved.
In one embodiment, as shown in fig. 6, the distance from the top surface 121 of the extended sheet 12 to the bottom surface 113 is greater than the distance from the top surface 112 to the bottom surface 113. When the upper surface 121 of the extending sheet 12 is attached to the back surface of the display screen 30, there is a gap between the top surface 112 of the main body 11 and the back surface of the display screen 30, so as to prevent the influence of impurities on the back surface of the display screen 30 on the main body 11 and the attachment of the display screen 30.
Further, referring to fig. 7, 8 and 9, the fingerprint chip 20 has a signal transceiving surface 21, and the signal transceiving surface 21 is parallel to the upper surface 121.
In this embodiment, the fingerprint chip 20 sends an induction signal to the user fingerprint from the signal transceiving surface 21, and feeds back the induction signal to the signal transceiving surface 21 after the user fingerprint receives the induction signal, and the signal transceiving surface 21 receives the fingerprint signal fed back from the user fingerprint and detects the user fingerprint information by comparing the fingerprint signal with the sent induction signal. By using the signal transceiving surface 21 parallel to the upper surface 121, it is ensured that the signal transceiving surface 21 is parallel to the display screen 30. That is, it is ensured that the signal transceiving surface 21 can effectively ensure that the signal transceiving surface 21 receives the sensing signal after the signal transceiving surface 21 sends the sensing signal.
In one embodiment, as shown in FIG. 7, the signal transmitting/receiving surface 21 of the fingerprint chip 20 is flush with the top surface 111. The upper surface 121 of the extending sheet 12 is attached to the back surface of the display screen 30, and the signal transmitting and receiving surface 21 of the fingerprint core 20 and the top surface 111 are both attached to the back surface of the display screen 30. Fingerprint chip 20 with laminate completely between the display screen 30, only exist promptly display screen 30 is right fingerprint chip 20's sensing signal blocks, has improved fingerprint module 100 fingerprint collection efficiency.
In one embodiment, as shown in fig. 8, the distance from the signal transmitting/receiving surface 21 of the fingerprint chip 20 to the bottom surface 112 is smaller than the distance from the signal transmitting/receiving surface 21 to the top surface 111. The top surface 111 and the upper surface 121 are both attached to the back surface of the display screen 30. The distance between the fingerprint chip 20 and the back of the display screen 30 is kept, so that the influence of impurities between the display screen 30 and the fingerprint chip 20 on the parallelism of the display screen 30 and the fingerprint chip 20 is avoided.
In one embodiment, as shown in fig. 9, the distance from the signal transmitting/receiving surface 21 of the fingerprint chip 20 to the bottom surface 112 is greater than the distance from the signal transmitting/receiving surface 21 to the top surface 111. The top surface 111 and the upper surface 121 are attached to the back surface of the display screen 30. The signal transmitting and receiving surface 21 of the fingerprint chip 20 extends into the groove on the back surface of the display screen 30. The distance between the signal transmitting and receiving surface 21 of the fingerprint chip 20 and the fingerprint of the user is reduced, and the signal transmitting and receiving efficiency of the fingerprint chip 20 is improved.
Further, referring to fig. 10, the fingerprint chip 20 has a plurality of light emitting sources 22 and a plurality of light receiving sources 23 arranged on the signal receiving and emitting surface 21, each of the light emitting sources 21 emits sensing light to the outside, and each of the light receiving sources 23 correspondingly receives the sensing light reflected from the outside.
In this embodiment, after each of the light emitting sources 22 emits light toward the fingerprint of the user, the light is reflected to each of the corresponding light receiving sources 23 by the fingerprint of the user. That is, the light exit angle of each light reflection source 22 and the display 30 need to be kept at a preset angle, so that the light receiving source 23 can receive the light reflected from the user's fingerprint. In other embodiments, the fingerprint chip 20 may further include an ultrasonic fingerprint chip, and the fingerprint chip 20 may further detect a user fingerprint by transmitting and receiving ultrasonic waves.
Further, referring to fig. 11, the display screen 30 is a flexible display screen, the extending sheet 12 is a flexible sheet, and the extending sheet 12 can be bent along with the display screen 30. Utilize extension piece 12 is followed display screen 30 is crooked to guaranteed extension piece 12 with the good laminating degree of display screen 30 has guaranteed promptly fingerprint chip 20 with display screen 30's parallel improves fingerprint module 100's fingerprint collection efficiency.
Further, referring to fig. 12, 13 and 14, the present invention further provides a display device 200, wherein the display device 200 includes the fingerprint module 100. The display device 200 further comprises a display screen 30, wherein the display screen 30 has a display surface 31 and a back surface 32 arranged opposite to the display surface 31. The display surface 31 has a display area 311, and the extending sheet 12 is attached to the back surface 32 and located in the display area 311 in the front projection of the display surface 31. Display screen 30 include the display layer with range upon range of in the display layer deviates from the bottom of user one side, the bottom is equipped with the signal and pierces through the district, extension piece 12 laminate in the bottom, fingerprint chip 20 with the signal pierces through the district just right, fingerprint chip 20 warp the signal pierce through the district with display layer receiving and dispatching induction signal.
In one embodiment, as shown in fig. 13, the Display screen 30 is an LCD (Liquid Crystal Display) Display screen. The display screen 30 comprises a glass cover plate 33, a polarizer 34, a pixel layer 35, a liquid crystal layer 36, a driving layer 37, a backlight plate 38 and a foam layer 39 which are sequentially laminated. The display surface 31 is disposed on the glass cover plate 33, and the back surface 32 is disposed on the foam layer 39. The pixel layer 35, the liquid crystal layer 36 and the driving layer 37 constitute a display layer, and the foam layer 39 constitutes a bottom layer. The extension piece 12 of the fingerprint chip 20 is attached to the foam layer 39. The foam layer 39 is provided with a hollow-out groove 391, and the hollow-out groove 391 is opposite to the fingerprint chip 20, so that the fingerprint chip 20 receives and transmits an induction signal through the hollow-out groove 391. The hollow-out groove 391 constitutes the signal penetration region.
In one embodiment, as shown in fig. 14, the display screen 30 is an O LED (organic electroluminescent) display screen. The display screen 30 is a flexible screen. The display screen 30 includes an organic transparent cover plate 233, a polarizer 234, a pixel layer 235, a cathode layer 236, an organic light emitting layer 237, an anode layer 238, and an organic substrate 239 stacked in sequence. The display surface 31 is disposed on the organic light-transmitting cover 233, and the back surface 32 is disposed on the organic substrate 239. The extending sheet 12 of the fingerprint chip 20 is attached to the organic substrate 239. The extension sheet 12 can be bent along with the organic substrate 239, so that the attaching degree of the fingerprint chip 20 and the display screen 30 is ensured. The organic substrate 239 is provided with a light-transmitting area 240, the light-transmitting area 240 is opposite to the fingerprint chip 20, and the fingerprint chip 20 receives and transmits an induction signal through the light-transmitting area 240. The light-transmitting region 240 constitutes the signal-passing region.
Referring to fig. 15, the embodiment further provides a mobile terminal 300, where the mobile terminal 300 includes the display device 200, and the mobile terminal 300 further includes a main board 50 and a rear case 60. Display device 200 with the backshell 60 closes mutually, mainboard 50 is fixed in the backshell 60 with between the display device 200, fingerprint module 100's fingerprint chip 20 electricity is connected mainboard 50, with the user's fingerprint of gathering send to mainboard 50. It is understood that the mobile terminal 300 may be a mobile phone, a tablet computer, a notebook computer, or the like.
According to the fingerprint module, the display device and the mobile terminal, the extension pieces extend out of the periphery of the main body through the supporting pieces, the extension pieces are attached to the back face of the display screen, so that the attachment area of the fingerprint module and the display screen is enlarged, the extension pieces are parallel to the fingerprint chip, the parallelism between the fingerprint chip of the fingerprint module and the display screen is guaranteed, the receiving and sending accuracy of a fingerprint chip sensing signal is improved, the fingerprint acquisition efficiency is improved, and the user experience is improved.
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 (10)

1. The utility model provides a fingerprint module, its characterized in that, the fingerprint module includes support piece and fingerprint chip, support piece include the main part and by the extension piece that main part week extends, the main part is equipped with holds the groove, the extension direction of extension piece is perpendicular hold groove opening orientation, the extension piece is used for laminating in the back of display screen, the fingerprint chip is fixed in hold the groove, just the fingerprint chip is parallel the extension piece, hold the groove by the top surface of main part runs through extremely the bottom surface of main part, it is in to hold the groove the opening of bottom surface is used for the power supply to be connected the flexible circuit board of fingerprint chip passes.
2. The fingerprint module of claim 1, wherein the extending piece has a flat upper surface, a normal direction of the upper surface is parallel to the opening of the receiving slot, and the upper surface is configured to be attached to the back surface of the display screen.
3. The fingerprint module of claim 2, wherein the fingerprint chip has a signal transceiving surface, and the signal transceiving surface is parallel to the upper surface.
4. The fingerprint module of claim 3, wherein the signal transceiving surface is flush with the upper surface.
5. The fingerprint module of claim 3, wherein the fingerprint chip is configured with a plurality of light emitting sources and a plurality of light receiving sources on the signal receiving and transmitting surface, each light emitting source emitting sensing light to the outside, and each light receiving source correspondingly receiving the sensing light reflected from the outside.
6. The fingerprint module of claim 1-5 wherein the display screen is a flexible display screen and the extension piece is a flexible piece, the extension piece being bendable with the display screen.
7. A display device comprising the fingerprint module of any one of claims 1 to 6, the display device further comprising a display screen having a display surface and a back surface disposed opposite to the display surface, the display surface having a display area, the extension sheet being attached to the back surface and positioned in the display area in a front projection of the display surface.
8. The display device according to claim 7, wherein the display screen comprises a display layer and a bottom layer laminated on a side of the display layer facing away from a user, the bottom layer is provided with a signal penetration region, the extension sheet is attached to the bottom layer, the fingerprint chip is opposite to the signal penetration region, and the fingerprint chip receives and transmits an induction signal through the signal penetration region and the display layer.
9. The display device according to claim 8, wherein the bottom layer is foam, and the signal transmission region is a hollow groove formed in the bottom layer.
10. A mobile terminal, characterized in that it comprises a display device according to any of claims 8-9.
CN201710342708.9A 2017-05-12 2017-05-12 Fingerprint module, display device and mobile terminal Active CN107169452B (en)

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PCT/CN2018/085212 WO2018205865A1 (en) 2017-05-12 2018-04-28 Fingerprint module, display apparatus and electronic device

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