CN208077192U - Optical finger print module and handheld terminal - Google Patents
Optical finger print module and handheld terminal Download PDFInfo
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- CN208077192U CN208077192U CN201820265040.2U CN201820265040U CN208077192U CN 208077192 U CN208077192 U CN 208077192U CN 201820265040 U CN201820265040 U CN 201820265040U CN 208077192 U CN208077192 U CN 208077192U
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- optical
- mirror slip
- optical mirror
- finger print
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- 238000003384 imaging method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
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- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The utility model is related to a kind of optical finger print module and handheld terminals.Optical finger print module includes optical chip, annular support member and optical mirror slip.The edge of optical mirror slip is connect by annular support member with optical chip, and the middle part of optical mirror slip is opposite with the functional area of optical chip and interval is arranged, to form the first hollow layer between optical mirror slip and functional area.Moreover, forming the second hollow layer between optical mirror slip and the transparent window of shell.When carrying out fingerprint recognition, finger presses on the surface of shell transparent window.The optical signal that optical chip is sent out sequentially passes through the second hollow layer, optical mirror slip and the first hollow layer and is received by functional area after fingerprint reflects.Since what is filled in the first hollow layer and the second hollow layer is air, refractive index is low, therefore the refraction that is generated in communication process of optical signal and loss are weaker.Therefore, the propagation path of optical signal is more stable, and fingerprint recognition effect is effectively promoted.
Description
Technical field
The utility model is related to fingerprint identification technology field, more particularly to a kind of optical finger print module and handheld terminal.
Background technology
Currently, fingerprint identification technology is widely used in the handheld terminals such as mobile phone, used for promoting handheld terminal
Safety in the process, privacy.Moreover, as the requirement to product appearance and screen accounting steps up, using the lower setting of screen
The fingerprint recognition module of mode, as optical finger print module is also becoming increasingly popular.
Common optical finger print module is using the scheme of stack design, i.e. optical chip, optical mirror slip, auxiliary material and screen
Curtain is stacked.Therefore, it can be directly entered auxiliary material after light passes through optical mirror slip, and light has loss and folding in the medium
It penetrates.That is, the light path that light is pointed into optical chip from screen is unstable, it is ineffective so as to cause fingerprint recognition.
Utility model content
Based on this, for the ineffective problem of existing optics module fingerprint recognition, it is necessary to provide a kind of promotion fingerprint
The optical finger print module and handheld terminal of recognition effect.
A kind of optical finger print module, including：
Optical chip, surface have the functional area for sending out and receiving optical signal；
Annular support member is fixed on the surface of the optical chip and is located at outside the functional area, the annular brace
Circumferentially extending of the part along the functional area；And
Optical mirror slip, edge, which is fixed with the annular support member backwards to one end of the optical chip, to be connected, the optics
The middle part of eyeglass is opposite with the functional area and interval is arranged, to be formed between the optical mirror slip and the functional area
First hollow layer.
When carrying out fingerprint recognition, the optical signal sent out by functional area passes through optical frames after the first hollow Es-region propagations
Piece；After being reflected by fingerprint, the optical signal of reflection propagates to functional area through the first hollow layer across optical mirror slip and is received.By
It is filled only with air in the first hollow layer, and air is the minimum optical medium of refractive index.Therefore, optical signal occurs in communication process
Refraction and loss it is weaker, light path is more stable, to be conducive to promote the effect of above-mentioned optical finger print module fingerprint recognition.
The edge of the annular support member is formed with ring-shaped step in one of the embodiments, the optical mirror slip
Edge is installed in the ring-shaped step.
Ring-shaped step can enhance the limit to optical mirror slip, so that optical mirror slip installation is more secured.
The ring-shaped step includes bottom wall and the side wall vertical with the bottom wall, the light in one of the embodiments,
The edge for learning eyeglass is carried on the bottom wall.
Bottom wall can limit optical mirror slip longitudinal movement, and side wall can limit optical mirror slip transverse shifting.Moreover, side wall and bottom
Wall is vertical so that the inner wall of ring-shaped step is L-shaped.And the surface of optical mirror slip is also substantially vertical with side.Therefore, optical mirror slip
Closer, to be installed to further improving optical eyeglass stability can be bonded with side wall and bottom wall.
The distance between the edge of the side wall and the bottom wall are more than the optical mirror slip in one of the embodiments,
Thickness.
Since the height of side wall is more than the thickness of optical mirror slip, therefore optical mirror slip is contained in ring-shaped step completely.Therefore,
When handheld terminal assembles, annular support member need to be only bonded backwards to one end of optical chip with the inner wall of shell, can be formed
Second hollow layer, therefore convenient for the assembling of handheld terminal
The optical mirror slip offers multiple through-holes in one of the embodiments,.
Therefore, across optical mirror slip " pinhole imaging system " phenomenon can occur for optical signal, obviously be put to be played to optical signal
Big effect is conducive to the effect for improving fingerprint recognition.
A kind of handheld terminal, including：
Optical finger print module as described in any one of above preferred embodiment；And
Shell, has a transparent window, the optical finger print module be installed in the shell and with the transparent window pair
Together, the optical mirror slip is opposite with the transparent window backwards to the side of the functional area and interval is arranged, in the light
It learns and forms the second hollow layer between eyeglass and the transparent window.
Further include foamed glue in one of the embodiments, the foamed glue is held on the inner walls and the light
Between the edge of eyeglass and connect the shell and the optical mirror slip.
The shell has display screen in one of the embodiments, and the optical mirror slip is backwards to the functional area
Side is opposite with the inside of the display screen and interval is arranged.
At this point, handheld terminal is fingerprint forward type, and optical finger print module is not necessarily to carry out shell using screen following formula installation
Tap operation, therefore processing efficiency can be effectively improved and improve the appearance of handheld terminal.
Above-mentioned handheld terminal, when carrying out fingerprint recognition, finger presses on the surface of transparent window.What optical chip was sent out
Optical signal sequentially passes through the second hollow layer, optical mirror slip and the first hollow layer and is received by functional area after fingerprint reflects.By
What is filled in the first hollow layer and the second hollow layer is air, and refractive index is low, therefore what optical signal generated in communication process
Refraction and loss are weaker.Therefore, the propagation path of optical signal is more stable so that the finger of above-mentioned optical finger print module and handheld terminal
Line recognition effect is effectively promoted.
Description of the drawings
Fig. 1 is the structural schematic diagram of optical finger print module in the utility model preferred embodiment；
Fig. 2 is the stacking schematic diagram that optical finger print identifies module shown in Fig. 1.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiment described herein.Make to the utility model on the contrary, purpose of providing these embodiments is
The understanding of disclosure is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more relevant Listed Items.
The utility model provides a kind of handheld terminal and optical finger print module.Wherein, handheld terminal includes shell and light
Learn fingerprint module.Shell can have the host cavity for housing electronic device by metal or plastics.Moreover, shell generally has
The display screen for having rear cover and being oppositely arranged with rear cover.
It please refers to Fig.1 and Fig. 2, the optical finger print module 100 in the utility model preferred embodiment includes optical chip
110, annular support member 120 and optical mirror slip 130.
Optical chip 110 encapsulates in advance, for finger print information to be converted to electric signal.Wherein, 110 surface of optical chip has
It is useful for sending out and receiving the functional area 111 of optical signal.Specifically, it is packaged with optical signal transmitter in optical chip 110, it can
Send out such as infrared light optical signal, optical signal receiver and processor.Further, the optical signal sent out is from functional area 111
Outgoing directive functional area 111 and is received by the receiver again after fingerprint reflects, by processor to the optical signal that receives
It is compared, fingerprint signal can be converted to electric signal.
Annular support member 120 is fixed on the surface of optical chip 110 and outside functional area 111.Therefore, annular brace
Part 120 can form functional area 111 and keep away position, not interfere with transmitting and reception to optical signal.Wherein, annular support member 120
It can be closed annular structure, can also be and be alternatively arranged the cyclic structure formed by multiple individual components.Further, annular
Circumferentially extending of the support element 120 along functional area 111.
Optical mirror slip 130 can play the role of optically focused and absorb other interference lights.Existed by the optical signal that fingerprint reflects
It is irradiated to before functional area 111, needs guiding through optical mirror slip 130, therefore can to filter out useless light, enhancing useful for optical lens 130
Light.Specifically in the present embodiment, optical mirror slip 130 offers multiple through-hole (not shown).Therefore, optical signal is across optics
" pinhole imaging system " phenomenon can occur for eyeglass 130, to play apparent amplification to optical signal, be conducive to improve fingerprint recognition
Effect.
Wherein, the edge of optical mirror slip 130 is fixed backwards to one end of optical chip 110 with annular support member 120 and is connected.Cause
This, optical mirror slip 130 is realized by annular support member 120 and optical chip 110 and is fixed.Further, in optical mirror slip 130
Portion is opposite with functional area 111 and interval is arranged, to form the first hollow layer between optical mirror slip 130 and functional area 111
140。
When carrying out fingerprint recognition, the optical signal sent out by functional area 111 passes through light after the propagation of the first hollow layer 140
Learn eyeglass 130；After being reflected by fingerprint, the optical signal of reflection propagates to function across optical mirror slip 130 through the first hollow layer 140
Region 111 is received.Since the first hollow layer 140 is filled only with air, and air is the minimum optical medium of refractive index.Therefore, light
The refraction and loss that signal occurs in communication process are weaker, and light path is more stable, to be conducive to improving optical fingerprint module 100
The effect of fingerprint recognition.
In the present embodiment, the edge of annular support member 120 is formed with ring-shaped step 121, the edge peace of optical mirror slip 130
Loaded in ring-shaped step 121.
Specifically, can the dispensing on the surface of ring-shaped step 121, so that optical mirror slip 130 be fixed.Moreover, annular table
Rank 121 can enhance the limit to optical mirror slip 130, so that the installation of optical mirror slip 130 is more secured.
Further, in the present embodiment, ring-shaped step 121 includes bottom wall 1212 and the side wall vertical with bottom wall 1212
1214, the edge of optical mirror slip 130 is carried on bottom wall 1212.
Bottom wall 1212 can limit the longitudinal movement of optical mirror slip 130, and side wall 1214 can limit optical mirror slip 130 and laterally move
It is dynamic.Moreover, side wall 1214 is vertical with bottom wall 1212 so that the inner wall of ring-shaped step 121 is L-shaped.And the surface of optical mirror slip 130
It is also substantially vertical with side.Therefore, optical mirror slip 130 can be bonded closer with side wall 1214 and bottom wall 1212, to further
The stability that improving optical eyeglass 130 is installed.
In handheld terminal, optical finger print module 100 is installed in shell.Wherein, there is shell transparent window, optics to refer to
Line module 100 is aligned with transparent window.Light may pass through transparent window.Therefore, optical signal can pass through shell by transparent window.
Further, optical mirror slip 130 is opposite with transparent window backwards to the side of functional area 111 and interval is arranged, with
The second hollow layer 150 is formed between optical mirror slip 130 and transparent window.Moreover, the second hollow layer 150 is also filled only with air.
In the present embodiment, the distance between the edge of side wall 1214 and bottom wall 1212 are more than the thickness of optical mirror slip 130.
Specifically, the height of side wall 1214 is more than the thickness of optical mirror slip 130, therefore optical mirror slip 130 is contained in ring completely
In shape step 121.Therefore, when handheld terminal assembles, only need to by annular support member 120 backwards to optical chip 110 one end with
The inner wall of shell is bonded, and can form the second hollow layer 150, therefore convenient for the assembling of handheld terminal.
In the present embodiment, handheld terminal further includes foamed glue 200.Foamed glue 200 is held on inner walls and optical frames
Between the edge of piece 130 and connect shell and optical mirror slip 130.
Foamed glue 200 can play the role of fixed optical finger print module 100.Moreover, foamed glue 200 is in a ring, with annular
The shape of support element 120 is approximate, and middle part and the transparent window of optical mirror slip 130 can be isolated.In addition, can also be in foamed glue 200
Surrounding sealing, to further reinforce optical finger print module 100.
When carrying out fingerprint recognition, finger presses on the surface of transparent window.The optical signal that optical chip 110 is sent out is worn successively
Reach at fingerprint after crossing the first hollow layer 140, optical mirror slip 130, the second hollow layer 150 and transparent window；After fingerprint reflects,
Reflected optical signal sequentially passes through transparent window, the second hollow layer 150, optical mirror slip 130 and the first hollow layer 140 and by work(
It can the reception of region 111.Since what is filled in the first hollow layer 140 and the second hollow layer 150 is air, refractive index is low, therefore light
Refraction that signal generates in communication process and loss are weaker, propagation path is more stable, therefore fingerprint recognition effect is improved.
Handheld terminal can be divided into two kinds of rear-mounted fingerprint recognition and forward type fingerprint recognition.In rear-mounted handheld terminal,
Transparent window is set to the rear cover of shell.Specifically, can shape the trepanning in shell body rear cover and by way of covering glass cover-plate
At transparent window.And in forward type handheld terminal, optical finger print module 100 then may be disposed at below display screen, and display screen is whole
Body is as transparent window.
In the present embodiment, shell has display screen 300, and optical mirror slip 130 is backwards to the side of functional area 111 and display
The inside of screen 200 is opposite and interval is arranged.
Specifically, the inside of display screen 200 refers to side of the display screen 200 towards enclosure interior.At this point, optical finger print
Module 100 is using screen following formula installation, without carrying out tap operation to shell, therefore can effectively improve processing efficiency and improve hand-held
The appearance of terminal.
Above-mentioned optical finger print module 100 and handheld terminal, when carrying out fingerprint recognition, finger presses on the table of transparent window
Face.The optical signal that optical chip 110 is sent out sequentially passes through the second hollow layer 150, optical mirror slip 130 and after fingerprint reflects
One hollow layer 140 is simultaneously received by functional area 111.Since what is filled in the first hollow layer 140 and the second hollow layer 140 is empty
Gas, refractive index is low, therefore the refraction that is generated in communication process of optical signal and loss are weaker.Therefore, the propagation path of optical signal
It is more stable, so that the fingerprint recognition effect of above-mentioned optical finger print module 100 and handheld terminal is effectively promoted.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of optical finger print module, which is characterized in that including：
Optical chip, surface have the functional area for sending out and receiving optical signal；
Annular support member is fixed on the surface of the optical chip and is located at outside the functional area, the annular support member edge
The circumferentially extending of the functional area；And
Optical mirror slip, edge are fixedly connected with the annular support member backwards to one end of the optical chip, the optical frames
The middle part of piece is opposite with the functional area and interval setting, to form the between the optical mirror slip and the functional area
One hollow layer.
2. optical finger print module according to claim 1, which is characterized in that the edge of the annular support member is formed with ring
The edge of shape step, the optical mirror slip is installed in the ring-shaped step.
3. optical finger print module according to claim 2, which is characterized in that the ring-shaped step include bottom wall and with it is described
The edge of the vertical side wall of bottom wall, the optical mirror slip is carried on the bottom wall.
4. optical finger print module according to claim 3, which is characterized in that between the edge of the side wall and the bottom wall
Distance be more than the optical mirror slip thickness.
5. optical finger print module according to any one of claims 1 to 4, which is characterized in that the optical mirror slip offers
Multiple through-holes.
6. a kind of handheld terminal, which is characterized in that including：
Such as above-mentioned optical finger print module described in any one of claim 1 to 5；And
There is shell transparent window, the optical finger print module to be installed in the shell and are aligned with the transparent window, institute
State optical mirror slip it is opposite with the transparent window backwards to the side of the functional area and interval setting, in the optical mirror slip
The second hollow layer is formed between the transparent window.
7. handheld terminal according to claim 6, which is characterized in that further include foamed glue, the foamed glue is held on institute
It states between inner walls and the edge of the optical mirror slip and connects the shell and the optical mirror slip.
8. the handheld terminal described according to claim 6 or 7, which is characterized in that the shell has display screen, the optical frames
Piece is opposite with the inside of the display screen backwards to the side of the functional area and interval is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820265040.2U CN208077192U (en) | 2018-02-23 | 2018-02-23 | Optical finger print module and handheld terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820265040.2U CN208077192U (en) | 2018-02-23 | 2018-02-23 | Optical finger print module and handheld terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208077192U true CN208077192U (en) | 2018-11-09 |
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ID=64039350
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820265040.2U Expired - Fee Related CN208077192U (en) | 2018-02-23 | 2018-02-23 | Optical finger print module and handheld terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN208077192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109376697A (en) * | 2018-11-29 | 2019-02-22 | 维沃移动通信有限公司 | Optical finger print mould group and electronic equipment |
| WO2021036326A1 (en) * | 2019-08-26 | 2021-03-04 | 神盾股份有限公司 | Fingerprint sensing module and electronic device |
-
2018
- 2018-02-23 CN CN201820265040.2U patent/CN208077192U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109376697A (en) * | 2018-11-29 | 2019-02-22 | 维沃移动通信有限公司 | Optical finger print mould group and electronic equipment |
| CN109376697B (en) * | 2018-11-29 | 2021-02-02 | 维沃移动通信有限公司 | Optical fingerprint module and electronic equipment |
| WO2021036326A1 (en) * | 2019-08-26 | 2021-03-04 | 神盾股份有限公司 | Fingerprint sensing module and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330000 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: OFilm Microelectronics Technology Co.,Ltd. Address after: 330000 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: OFilm Microelectronics Technology Co.,Ltd. Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 |