CN207909164U - Optical detection apparatus and electronic equipment - Google Patents
Optical detection apparatus and electronic equipment Download PDFInfo
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- CN207909164U CN207909164U CN201721643468.8U CN201721643468U CN207909164U CN 207909164 U CN207909164 U CN 207909164U CN 201721643468 U CN201721643468 U CN 201721643468U CN 207909164 U CN207909164 U CN 207909164U
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Abstract
The utility model provides a kind of optical detection apparatus and electronic equipment.The optical detection apparatus includes：Transparent cover plate has along first direction opposite incidence surface and light-emitting surface, and also there is transparent cover plate opposite first surface and second surface, first surface to have multiple touch areas；Light source unit, including at least one light source, light source unit is set to the side of transparent cover plate and close to incidence surface, each light source is for sending out the collimated light beam for being incident to incidence surface, collimated light beam includes multiple parallel light, multiple total reflection occurs in transparent cover plate and is projected from light-emitting surface for light, and primary total reflection occurs at least two touch areas for each light；Image sensing cell, including at least one imaging sensor are arranged close to light-emitting surface, and imaging sensor is for receiving the light projected from light-emitting surface and the information of light being converted to image information.The detection device can detect the finger print information of at least two fingers, improve the accuracy of fingerprint recognition.
Description
Technical field
The utility model is related to detection technique fields, in particular to a kind of optical detection apparatus and electronic equipment.
Background technology
With mobile phone technique weed out the old and bring forth the new and the continuous improvement of mobile phone user's demand, in order to reach more preferably user's body
It tests, increases mobile phone screen area accounting, screen has become a main trend of intelligent terminal development comprehensively.
For traditional capacitance type fingerprint identification technology, since capacitance detecting can not penetrate limit many-sided compared with heavy sheet glass etc.
System can not complete the task of removal Home key.
The optical fingerprint identification technology of the prior art may be implemented to shield comprehensively, generally set fingerprint recognition module in the technology
Below screen, the fingerprint valley ridge information of user is converted to obtain digitized finger print information.By to the single of user
Finger print information is acquired, quantifies, handling and certification, optical finger print knowledge is carried out to fingerprint in specific region to realize, into one
Step ensure that the safety of system.
Popular fingerprint recognition system currently on the market, it is either optical profile type, ultrasonic type or capacitive,
It is identified both for single finger print information and certification, once the single finger print information leakage of user, which will
It is no longer safe.
Utility model content
The main purpose of the utility model is to provide a kind of optical detection apparatus and electronic equipments, to solve the prior art
In identifying system in can only identify the problem that security of system caused by single finger print information can be relatively low.
To achieve the goals above, one side according to the present utility model provides a kind of optical detection apparatus, the light
Learning detection device includes：Transparent cover plate has along first direction opposite incidence surface and light-emitting surface, above-mentioned first direction perpendicular to
The thickness direction of above-mentioned transparent cover plate, above-mentioned transparent cover plate also has to be connect and opposite with above-mentioned incidence surface and above-mentioned light-emitting surface
First surface and second surface, above-mentioned first surface have multiple touch areas；Light source unit, including at least one light source, on
It states light source unit and is set to the side of above-mentioned transparent cover plate and close above-mentioned incidence surface, each above-mentioned light source is used to send out to be incident to
The collimated light beam of incidence surface is stated, above-mentioned collimated light beam includes multiple parallel light, and above-mentioned light is sent out in above-mentioned transparent cover plate
Raw multiple total reflection is simultaneously projected from above-mentioned light-emitting surface, and the above-mentioned light of each item occurs one at least two above-mentioned touch areas
Secondary total reflection；Image sensing cell, including at least one imaging sensor, above-mentioned image sensing cell are set to above-mentioned transparency cover
The other side of plate and close above-mentioned light-emitting surface, above-mentioned imaging sensor are used to receive the above-mentioned light projected from above-mentioned light-emitting surface simultaneously
The information of above-mentioned light is converted into image information.
Further, primary total reflection occurs at each above-mentioned touch area for the above-mentioned light of each item.
Further, the width of above-mentioned collimated light beam is more than or equal to above-mentioned touch area on above-mentioned first direction
Width.
Further, above-mentioned optical detection apparatus further includes：Lens unit, setting above-mentioned image sensing cell with it is above-mentioned
Between light-emitting surface, said lens unit includes at least one lens, what said lens unit was used to project above-mentioned light-emitting surface
It states in convergence of rays to above-mentioned image sensing cell.
Further, above-mentioned light source unit includes multiple above-mentioned light sources being arranged in order in a second direction, above-mentioned second party
To vertical with above-mentioned first direction and parallel with above-mentioned incidence surface.
Further, interval of the two above-mentioned light sources of arbitrary neighborhood in above-mentioned second direction is equal.
Further, above-mentioned image sensing cell includes multiple above-mentioned imaging sensors arranged along above-mentioned second direction,
Above-mentioned light source is arranged in a one-to-one correspondence with above-mentioned imaging sensor.
Further, interval of the two above-mentioned imaging sensors of arbitrary neighborhood in above-mentioned second direction is equal.
Further, above-mentioned transparent cover plate is glass cover-plate.
Further, above-mentioned optical detection apparatus is the optical detection apparatus of fingerprint.
Another aspect according to the present utility model provides a kind of electronic equipment, including display screen and optical detection apparatus,
The optical detection apparatus is any above-mentioned optical detection apparatus.
Further, above-mentioned display screen includes that LCD display, LED display, OLED display screen and Micro LED are shown
At least one of screen.
Include multiple Petting Areas on the transparent cover plate in the optical detection apparatus using the technical solution of the utility model
Domain, and at least two touch areas can be totally reflected in multiple touch areas, i.e., the light finally projected by light-emitting surface
It is formed by stacking by the corresponding optical information of the touch information of at least two touch areas, finally passes through composite diagram in image sensing cell
Picture, accordingly, in the image also include the corresponding touch information in multiple touch areas, as a result, the detection device can detect to
The finger print information of few two fingers, improves the accuracy of fingerprint recognition.
Description of the drawings
The Figure of description for constituting the part of the utility model is used to provide a further understanding of the present invention, this
The illustrative embodiments and their description of utility model do not constitute the improper limit to the utility model for explaining the utility model
It is fixed.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram for the optical detection apparatus that a kind of embodiment according to the present utility model provides；
Fig. 2 shows the structural schematic diagrams for the optical detection apparatus that another embodiment of the application provides；And
Fig. 3 shows the structural schematic diagram for the optical detection apparatus that the another embodiment of the application provides.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, transparent cover plate；20, light source unit；30, lens unit；40, image sensing cell；11, incidence surface；12, light extraction
Face；13, first surface；130, touch area；21, light source；31, lens；41, imaging sensor；100, fingerprint.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing,
" second " etc. is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that in this way
The data used can be interchanged in the appropriate case, so as to the embodiments of the present invention described herein.In addition, term " packet
Include " and " having " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps
Or process, method, system, product or the equipment of unit those of are not necessarily limited to clearly to list step or unit, but can wrap
It includes not listing clearly or for these processes, method, product or equipment intrinsic other steps or unit.
As above-mentioned in background technology, popular fingerprint recognition system currently on the market, either optical profile type, ultrasonic wave
It is formula or capacitive, it is identified both for single finger print information and certification, once the single finger print of user
Information leakage, the system will be no longer safe.In order to solve the above technical problems, present applicant proposes a kind of optical detection apparatus
And electronic equipment.
In a kind of typical embodiment of the application, a kind of optical detection apparatus is provided, it as shown in Figures 1 and 2, should
Optical detection apparatus includes transparent cover plate 10, light source unit 20 and image sensing cell 40.
Wherein, above-mentioned transparent cover plate 10 has along the opposite incidence surface 11 of first direction and light-emitting surface 12, above-mentioned first party
To the thickness direction perpendicular to above-mentioned transparent cover plate 10, above-mentioned transparent cover plate 10 also has and above-mentioned incidence surface 11 and above-mentioned light extraction
Face 12 connects and opposite first surface 13 and second surface, and above-mentioned first surface 13 has multiple touch areas 130；Light source list
Member 20, including at least one light source 21, above-mentioned light source unit 20 be set to the side of above-mentioned transparent cover plate 10 and close to it is above-mentioned enter
Smooth surface 11, for each above-mentioned light source 21 for sending out the collimated light beam for being incident to above-mentioned incidence surface 11, above-mentioned collimated light beam includes multiple
Multiple total reflection occurs in above-mentioned transparent cover plate 10 and is projected from above-mentioned light-emitting surface 12 for parallel light, above-mentioned light, and each
The above-mentioned light of item occurs at least two above-mentioned touch areas 130 (region where fingerprint 100 etc. is touch area 130)
Primary total reflection；Image sensing cell 40 includes at least one imaging sensor 41, and above-mentioned image sensing cell 40 is set to
It states the other side of transparent cover plate 10 and close to above-mentioned light-emitting surface 12, above-mentioned imaging sensor 41 is for receiving from above-mentioned light-emitting surface 12
The information of above-mentioned light is simultaneously converted to image information by the above-mentioned light of injection.
Include multiple Petting Areas on the transparent cover plate in the optical detection apparatus using the technical solution of the utility model
Domain, and at least two touch areas can be totally reflected in multiple touch areas, i.e., the light finally projected by light-emitting surface
It is formed by stacking by the corresponding optical information of the touch information of at least two touch areas, finally passes through composite diagram in image sensing cell
Picture, accordingly, in the image also include the corresponding touch information in multiple touch areas, as a result, the detection device can detect to
The finger print information of few two fingers, improves the accuracy of fingerprint recognition.
The corresponding incidence angle of collimated light beam that light source in above-mentioned light source unit is sent out can this be parallel according to specific
Light beam depending on several touch areas are totally reflected, will can be combined with depending on thickness and material of transparent cover plate etc..This
The incidence angle of the collimated light beam can be arranged in field technology personnel according to actual conditions, if the incidence angle can formerly after by
It is totally reflected when at least two touch areas.
In order to enable collimated light beam can formerly after by can be totally reflected at each touch area so that
The light projected from light-emitting surface carries the finger print information of each touch area, so that it is each touch area to finally obtain image
Fingerprint superimposed image, to further improve the detection accuracy of optical detection apparatus, a kind of embodiment of the application
In, primary total reflection occurs at each above-mentioned touch area 130 for each above-mentioned light of item.As shown in Figure 1, being wrapped on the transparent cover plate
Two touch areas are included, when after the collimated light beam that light source unit is sent out is first by the two touch areas, are had occurred
Total reflection, each light specifically in collimated light beam are successively totally reflected at the two touch areas.
In order to further obtain whole finger print informations of touch area so that the image information obtained it is more accurate and
It preferably coincide with fingerprint, in a kind of embodiment of the application, as shown in Figure 1, the width of above-mentioned collimated light beam is more than or waits
In width of the above-mentioned touch area 130 on above-mentioned first direction.
In another embodiment of the application, as shown in Figure 1 to Figure 3, above-mentioned optical detection apparatus further includes lens unit
30, lens unit 30 is arranged between above-mentioned image sensing cell 40 and above-mentioned light-emitting surface 12, and said lens unit 30 includes extremely
Few lens 31, the above-mentioned convergence of rays that said lens unit 30 is used to project above-mentioned light-emitting surface 12 to above-mentioned image sensing
In unit 40, the light being emitted from light-emitting surface is enabled to all to converge in imaging sensor in this way, so that image passes
Sensor converts to obtain that image information is more accurate, to further improve the optical detection apparatus detection accuracy.
As shown in figure 3, in the another embodiment of the application, above-mentioned light source unit 20 include it is multiple in a second direction successively
The light source 21 of arrangement, above-mentioned second direction are vertical with above-mentioned first direction and parallel with above-mentioned incidence surface 11.Multiple light sources unit
Correspondence sends out multiple collimated light beams, and the incidence angle of these collimated light beams can be identical, can also be different, these light sources
The identical or different collimated light beam of the incidence angle sent out is totally reflected in the different touch areas of transparent cover plate, makes
More touch areas can be arranged by obtaining on the transparent cover plate, and then realize the detection of the overlapped information of more fingerprints.
In another embodiment of the application, as shown in figure 3, two above-mentioned light sources 21 of arbitrary neighborhood are in above-mentioned second party
Upward interval is equal.
In order to which the emergent ray that the light for sending out different light sources obtains after total reflection is converted into image information, this
In a kind of embodiment of application, as shown in figure 3, above-mentioned image sensing cell 40 includes multiple figures along the arrangement of above-mentioned second direction
As sensor 41, above-mentioned light source 21 is arranged in a one-to-one correspondence with above-mentioned imaging sensor 41.
As shown in figure 3, interval of the two above-mentioned imaging sensors 41 of arbitrary neighborhood in above-mentioned second direction is equal.It is right
In embodiment shown in Fig. 3, imaging sensor therein is arranged in a one-to-one correspondence with light source, this one-to-one setting side
Formula refers not only to the one-to-one correspondence in number, also refers to the one-to-one correspondence on the position of the two, i.e., the light that a light source is sent out simultaneously
The emergent ray that line obtains after total reflection can enter in corresponding imaging sensor.
Certainly, the light source in the optical detection apparatus of the application and imaging sensor are quantitatively not necessarily one a pair of
It answers, can also be other quantity correspondences, such as, two light sources correspond to an imaging sensor, three light sources pair
Answer imaging sensor etc..Imaging sensor can be set as closing by those skilled in the art according to actual conditions with light source
Suitable corresponding number relationship.
Illustrate its course of work, two light sources so that two light sources correspond to the optical detection apparatus of an imaging sensor as an example
The light beam sent out enters in the same imaging sensor by total reflection from the light beam that light-emitting surface projects, the two light sources correspond to
Outgoing beam can simultaneously enter the imaging sensor in, can not also in the same time enter the imaging sensor in.When this two
A outgoing beam simultaneously into the image information that in imaging sensor, imaging sensor handles optical information be this two
The light beam that a light source is sent out corresponds to the superposition of the finger print information for the touch area being totally reflected.When the two outgoing beams difference
When enter in imaging sensor, the optical information that imaging sensor enters different moments is respectively processed, so successively obtain
Two different fingerprint images, each fingerprint image correspond to the light beam that a light source is sent out and correspond to the Petting Area being totally reflected
The superposition of the finger print information in domain.
In another embodiment of the application, above-mentioned transparent cover plate 10 is glass cover-plate, and glass cover-plate cost is relatively low, purchase
It is convenient, and light transmittance and hardness can meet the requirement of the detection device.
Certainly, the transparent cover plate of the application is not limited to above-mentioned glass cover-plate, can also be other transparent cover plates, than
Such as PET cover boards, art technology can select suitable material to form transparent cover plate with personnel according to actual conditions, only to be formed
The light transmittance of transparent cover plate and hardness etc. disclosure satisfy that the use demand of the optical detection apparatus.
In a kind of embodiment of the application, above-mentioned optical detection apparatus is the optical detection apparatus of fingerprint, the detection of fingerprint
It is simpler and efficient.
Certainly, the optical detection apparatus in the application is not limited to the optical detection apparatus of fingerprint, can also be other
Optical detection apparatus, for example, palmmprint optical detection apparatus.Those skilled in the art can make suitably according to actual needs
Optical detection apparatus.
In the typical embodiment of another kind of the application, a kind of electronic equipment is provided, which includes display
Screen and optical detection apparatus, above-mentioned optical detection apparatus are any above-mentioned optical detection apparatus.
Above-mentioned electronic equipment is due to including above-mentioned optical detection apparatus so that the accuracy higher of its fingerprint recognition,
And then it can better ensure that the safety of the electronic equipment.
It should be noted that the display screen of the application can be any type display screen in the prior art, this field skill
Art personnel can select suitable display applications in corresponding electronic equipment according to actual conditions.
In a kind of embodiment of the application, above-mentioned display screen include LCD display, LED display, OLED display screen with
At least one of Micro LED displays.The display effect of these display screens is more preferable.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The embodiment of body illustrates the technical solution of the application.
Embodiment
It is passed as shown in Figure 1, optical detection apparatus includes transparent cover plate 10, light source unit 20, lens unit 30 and image
Feel unit 40.Specific position relationship is as shown in Figure 1, just repeat no more herein.Wherein, light source unit includes a light source,
Lens unit includes a lens, and image sensing cell includes an image sensor.
Transparent cover plate is glass cover-plate, and (transparent cover plate is perpendicular to paper or aobvious in Fig. 1 for the length of the transparent cover plate
The width on the side of display screen inwards) 160mm, width (width on transparent cover plate side in the horizontal direction in Fig. 1) is 56mm, and thickness is
0.5mm, and its refractive index is 1.5.There are two touch areas, the two touch areas to distinguish position for tool on the surface of the transparent cover plate
In two opposite edges of transparent cover plate, the two touch areas are rectangle, and length is 8mm, and width is 8mm,
Wherein, the distance on the side of the centre distance transparent cover plate of a touch area is 4mm.
Specifically detection process includes：
The collimated light beam that light source is sent out is 5.4 ° in the incidence angle of incidence surface, the corresponding fingerprint 100 of two fingers of people
Respectively touch two touch areas 130, as shown in Figure 1, after the collimated light beam is first by two above-mentioned touch areas when it is equal
It can be totally reflected, and the light after being totally reflected by the latter touch area is incident to by light-emitting surface in lens, pass through
The converging action for crossing lens enters in imaging sensor, and imaging sensor, which converts the corresponding optical information of these light to image, to be believed
Breath, finally obtains the superimposed image of the fingerprint image of the two fingers.
The image of this superposition and the image of script storage are compared, can effectively identify finger print information.
The optical detection apparatus is simple in structure, and detects the superposition that obtained image is at least two fingerprint images so that
The identification of fingerprint is more accurate, improves the detection accuracy of the optical detection apparatus.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：
1), on the transparent cover plate in the optical detection apparatus of the application include multiple touch areas, and multiple touch areas
In at least two touch areas can be totally reflected, i.e., finally by light-emitting surface project light by least two touch areas
The corresponding optical information of touch information be formed by stacking, finally pass through image sensing cell in composograph, accordingly, in the image
Also include the corresponding touch information in multiple touch areas, the detection device can detect the fingerprint letter of at least two fingers as a result,
Breath, improves the accuracy of fingerprint recognition.
2), the electronic equipment of the application is due to including above-mentioned optical detection apparatus so that the accuracy of its fingerprint recognition
Higher, and then can better ensure that the safety of the electronic equipment.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (12)
1. a kind of optical detection apparatus, which is characterized in that the optical detection apparatus includes：
Transparent cover plate (10) has along the opposite incidence surface of first direction (11) and light-emitting surface (12), and the first direction is vertical
Thickness direction in the transparent cover plate (10), the transparent cover plate (10) also have and the incidence surface (11) and the light extraction
Face (12) connects and opposite first surface (13) and second surface, and the first surface (13) has multiple touch areas
(130)；
Light source unit (20), including at least one light source (21), the light source unit (20) are set to the transparent cover plate (10)
Side and close to the incidence surface (11), each light source (21) is for sending out the directional light for being incident to the incidence surface (11)
Beam, the collimated light beam include multiple parallel light, and multiple total reflection occurs in the transparent cover plate (10) for the light
And projected from the light-emitting surface (12), and light described in each item occurs once at least two touch areas (130)
Total reflection；And
Image sensing cell (40), including at least one imaging sensor (41), described image sensing unit (40) are set to institute
State the other side of transparent cover plate (10) and close to the light-emitting surface (12), described image sensor (41) for receive from it is described go out
The information of the light is simultaneously converted to image information by the light of smooth surface (12) injection.
2. optical detection apparatus according to claim 1, which is characterized in that light described in each item is in each touch area
(130) primary total reflection occurs at.
3. optical detection apparatus according to claim 1 or 2, which is characterized in that the width of the collimated light beam be more than or
Person is equal to the width of the touch area (130) in said first direction.
4. optical detection apparatus according to claim 1, which is characterized in that the optical detection apparatus further includes：
Lens unit (30) is arranged between described image sensing unit (40) and the light-emitting surface (12), the lens unit
(30) include at least one lens (31), the light meeting that the lens unit (30) is used to project the light-emitting surface (12)
Gather into described image sensing unit (40).
5. optical detection apparatus according to claim 1, which is characterized in that the light source unit (20) includes multiple along
The light source (21) that two directions are arranged in order, the second direction it is vertical with the first direction and with the incidence surface (11)
It is parallel.
6. optical detection apparatus according to claim 5, which is characterized in that two light sources (21) of arbitrary neighborhood exist
Interval in the second direction is equal.
7. optical detection apparatus according to claim 5, which is characterized in that described image sensing unit (40) includes multiple
Along the described image sensor (41) of second direction arrangement, the light source (21) is a pair of with described image sensor (41) one
It should be arranged.
8. optical detection apparatus according to claim 7, which is characterized in that two described image sensors of arbitrary neighborhood
(41) in this second direction interval is equal.
9. according to the optical detection apparatus described in claim 1, any one of 2 and 4 to 8, which is characterized in that the transparent cover plate
(10) it is glass cover-plate.
10. according to the optical detection apparatus described in claim 1, any one of 2 and 4 to 8, which is characterized in that the optics inspection
Survey the optical detection apparatus that device is fingerprint.
11. a kind of electronic equipment, including display screen and optical detection apparatus, which is characterized in that the optical detection apparatus is power
Profit requires the optical detection apparatus described in any one of 1 to 10.
12. electronic equipment according to claim 11, which is characterized in that the display screen includes LCD display, LED aobvious
At least one of display screen, OLED display screen and Micro LED displays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643468.8U CN207909164U (en) | 2017-11-30 | 2017-11-30 | Optical detection apparatus and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643468.8U CN207909164U (en) | 2017-11-30 | 2017-11-30 | Optical detection apparatus and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN207909164U true CN207909164U (en) | 2018-09-25 |
Family
ID=63571358
Family Applications (1)
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| CN201721643468.8U Active CN207909164U (en) | 2017-11-30 | 2017-11-30 | Optical detection apparatus and electronic equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274906A (en) * | 2018-10-31 | 2019-01-25 | 威海华菱光电股份有限公司 | Image processing apparatus |
| CN110785771A (en) * | 2019-01-22 | 2020-02-11 | 深圳市汇顶科技股份有限公司 | Optical fingerprint identification system under screen, fingerprint identification display device and electronic equipment |
| CN111095269A (en) * | 2019-04-10 | 2020-05-01 | 深圳市汇顶科技股份有限公司 | Optical ID sensing using illumination sources located at the periphery of a display screen |
| CN112307838A (en) * | 2019-07-31 | 2021-02-02 | 深圳阜时科技有限公司 | Optical detection device |
| CN112395931A (en) * | 2019-08-13 | 2021-02-23 | 广州印芯半导体技术有限公司 | Fingerprint sensing device |
-
2017
- 2017-11-30 CN CN201721643468.8U patent/CN207909164U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274906A (en) * | 2018-10-31 | 2019-01-25 | 威海华菱光电股份有限公司 | Image processing apparatus |
| CN110785771A (en) * | 2019-01-22 | 2020-02-11 | 深圳市汇顶科技股份有限公司 | Optical fingerprint identification system under screen, fingerprint identification display device and electronic equipment |
| CN110785771B (en) * | 2019-01-22 | 2023-09-08 | 深圳市汇顶科技股份有限公司 | Under-screen optical fingerprint identification system, fingerprint identification display device and electronic equipment |
| CN111095269A (en) * | 2019-04-10 | 2020-05-01 | 深圳市汇顶科技股份有限公司 | Optical ID sensing using illumination sources located at the periphery of a display screen |
| CN112307838A (en) * | 2019-07-31 | 2021-02-02 | 深圳阜时科技有限公司 | Optical detection device |
| CN112395931A (en) * | 2019-08-13 | 2021-02-23 | 广州印芯半导体技术有限公司 | Fingerprint sensing device |
| CN112395931B (en) * | 2019-08-13 | 2024-05-10 | 广州印芯半导体技术有限公司 | Fingerprint sensing device |
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