CN106940598A - Collect touch-control and the optical touch screen of fingerprint recognition - Google Patents
Collect touch-control and the optical touch screen of fingerprint recognition Download PDFInfo
- Publication number
- CN106940598A CN106940598A CN201611181662.9A CN201611181662A CN106940598A CN 106940598 A CN106940598 A CN 106940598A CN 201611181662 A CN201611181662 A CN 201611181662A CN 106940598 A CN106940598 A CN 106940598A
- Authority
- CN
- China
- Prior art keywords
- fiber waveguide
- light
- grating
- touch
- fingerprint
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Image Input (AREA)
Abstract
It is a kind of to collect touch-control and the optical touch screen of fingerprint recognition, including back light, fiber waveguide, grating, liquid crystal display module and imaging sensor, the present invention is judged the position for occurring touch-control by sensor according to light intensity magnitude, and the image received by sensor obtains finger print information.Due to overlapping the use of detection light, touch-control sensitivity is improved while collection fingerprint, optical touch screen of the present invention integrates fingerprint recognition and touch control, with safe, ultra-thin, image quality is high and the characteristics of low cost.
Description
Technical field
It is particularly a kind of to collect touch-control and the optical touch screen of fingerprint recognition the present invention relates to optical touch screen.
Background technology
Touch-screen can be attributed to according to the difference of know-why：Resistive touch screen, capacitive touch screen, surface acoustic wave
Touch-screen and infrared touch panel.Resistive touch screen, which has, is not afraid of pollution and inexpensive advantage, but not wear-resistant, light transmittance
It is low and reaction speed is slow；The antifouling difference of surface acoustic wave touch screen, transmitting transducer is frangible, and service life is short；Capacitance touch screen resists
Electromagnetic interference difference is, it is necessary to which conductor does touch-control, and use environment is limited to, and high to environmental requirements such as temperature humidity ground connection.And it is infrared tactile
Screen is touched because using infrared backlight light source, on human eye without influence, possesses high sensitivity and stability, preferable internal or external effect
Fruit make it that it does not influence the outward appearance of display, anti-riot function admirable.But similarly, infrared transmitting back light high cost, and
And, because infrared backlight light source is generally a back light, it is necessary to which certain thickness and length could allow light to be uniformly distributed, it is impossible to
Meet the frivolous and portable requirement of small size.
Above-mentioned touch-screen can not all meet the fingerprint that user is detected while touch control is produced.Chinese patent
CN104751121A discloses a kind of light wave conduction fingerprint recognition system based on optical grating construction, but it allows detection zone unit
Separation, the mode of this non-whole face arrangement detection zone unit is not suitable for realizing touch-control, easy missing inspection touch point；And do not permit
Perhaps detection zone unit is overlapped, and this can cause the angle of total reflection very big, is caused being more difficult to for fingerprint damage total reflection change, is reduced figure
The contrast of picture, and thus bring the increase of CCD areas so that whole device cost is uprised.
The content of the invention
It is an object of the invention to collect touch-control and the optics of fingerprint recognition there is provided a kind of for above-mentioned the deficiencies in the prior art
Touch-screen, the optical touch screen integrates touch-control and fingerprint recognition, high and low cost with safe, ultra-thin, image quality
Feature.
The technical solution of the present invention is as follows：
A kind of optical touch screen for collecting touch-control and fingerprint recognition, its feature is, including back light, fiber waveguide, grating,
Liquid crystal display module and imaging sensor, described fiber waveguide are located at the top of described back light, in described fiber waveguide
Adjacent both sides described grating is respectively set, the adjacent another both sides of fiber waveguide are respectively provided with an array imaging sensor, described
Liquid crystal display module is located between described back light and fiber waveguide, and the upper surface of described fiber waveguide is detection zone, position
There is the fingerprint detection region of period profile in the detection zone；
The light that described back light is sent forms the detection light of laterally propagation described after described optical grating diffraction
Received in fiber waveguide after multiple total reflection by described imaging sensor；
The direction of described grating and the direction of propagation of detection light in described fiber waveguide are tilted, described grating diffration
Angle θ meets equation below：
L+d/4h≤tanθ≤L/2h
In formula, L is the width of detection light detectable area, and h is the thickness of fiber waveguide, and d is the unit in fingerprint detection region
Width；
Described fiber waveguide meets following relational expression in the chamfer angles alpha of the one side bottom away from described grating：
θ-arcsin(n0/n1)≤α≤90°
In formula：n0,n1The respectively refractive index of air and fiber waveguide.
Described grating is located at the upper surface of described fiber waveguide, has metallic reflection in the upper surface of described grating
Layer.
Described grating is located at the lower surface of described fiber waveguide, in the upper table mask of the fiber waveguide of described grating region
There is metallic reflector.
One layer of anti-fingerprint pad pasting is posted in described detection zone.
Provided with collimation prism between described grating and described back light.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention enters in the middle of the light path of fiber waveguide in back light has used optical grating construction, light is occurred in fiber waveguide
The detection light that diffraction formation can be overlapped, detection light carries finger print information and is transferred to sensor, and sensor judges according to light intensity magnitude
Occur the position of touch-control, and finger print information is obtained by the image that sensor is received.Due to overlapping the use of detection light, collection refers to
Touch-control sensitivity is improved while line, the optical panel for integrating fingerprint recognition and touch control is realized.
The present invention effectively increases coupling efficiency by metal grating, oblique raster, improves the quality of fingerprint image；Allow
Overlapping detection zone, so as to greatly reduce the requirement to angle of diffraction so that in the case where not influenceing fingerprint image to obtain,
Touch-control sensitivity is greatly improved, it is final to realize the light wave conduction optical panel for integrating fingerprint collecting and touch control, can be built-in
In mobile terminals such as mobile phones, with safe, ultra-thin, image quality is high and the characteristics of low cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the optical touch screen of present invention collection fingerprint recognition and touch control.
Fig. 2 is the 1st embodiment of the invention.
Fig. 3 corresponding ± 1 order diffraction efficiency when being visible ray back light normal incidence.
Fig. 4 is the 2nd embodiment of the present invention.
Fig. 5 is the top view that the present invention is applied to two-dimentional touch-control.
Fig. 6 is the optical signal schematic diagram that detector is received when finger is touched.
Fig. 7 is the experiment measurement figure that detector receives signal when finger of the present invention is touched.
Fig. 8 is the partial perspective view of the optical touch screen of invention collection fingerprint recognition and touch control.
Embodiment
The present invention is elaborated with reference to embodiment and accompanying drawing, but the protection model of the present invention should not be limited with this
Enclose.
First referring to Fig. 1, as seen from the figure, the present invention collects touch-control and the optical touch screen of fingerprint recognition, including back light
200th, fiber waveguide 202, grating 201, liquid crystal display module 203 and imaging sensor 204, described fiber waveguide 202 are located at described
Back light 200 top, in the adjacent both sides of described fiber waveguide 202, described grating 201, fiber waveguide are respectively set
202 adjacent another both sides are respectively provided with an array imaging sensor 204, and described liquid crystal display module 203 is located at described backlight
Between light source 200 and fiber waveguide 202, the upper surface of described fiber waveguide 202 is detection zone 205, positioned at the detection zone 205
In have period profile fingerprint detection region 206；
The detection light that the light that described back light 200 is sent forms laterally propagation after the described diffraction of grating 201 exists
Received in described fiber waveguide 202 after multiple total reflection by described imaging sensor 204；
The direction of described grating 201 and the direction of propagation of detection light in described fiber waveguide 202 are tilted, described grating
201 diffraction angle meets equation below：
L+d/4h≤tanθ≤L/2h
In formula, L is the width of detection light detectable area, and h is the thickness of fiber waveguide, and d is the unit in fingerprint detection region
Width；
Described fiber waveguide 202 meets following relation in the chamfer angles alpha of the one side bottom away from described grating 201
Formula：
θ-arcsin(n0/n1)≤α≤90°
In formula：n0,n1The respectively refractive index of air and fiber waveguide.
Described back light 200 is used up there is provided fingerprint collecting and touch control detection；Grating 201, by from back light
Incident light, which is converted into the wave guide mode that can be laterally propagated in fiber waveguide, is used for fingerprint detection and position of touch detection；Fiber waveguide 202,
Light from back light can be propagated and be totally reflected wherein through optical grating diffraction；Detection zone 205 and effective fingerprint detection
Region 206, realizes that fingerprint collecting and position of touch are determined for being contacted with finger；Imaging sensor 204, from back light
Light to be handled and realize fingerprint imaging into imaging sensor after digital reflex, and the intensity signal obtained according to diverse location sensor is sentenced
Disconnected position of touch.During work, finger is placed on detection zone 205, and back light 200 sends light, and a part of light directly reaches liquid
Brilliant display module 203, as normal backlight back light, for showing；Another fraction light utilizes grating through grating 201
Diffraction is coupled into the detection light for being formed and laterally being propagated in fiber waveguide 202.These detection light are reached after detection zone, due to finger
The ridge (raised part) of fingerprint can directly be contacted with detection zone, so that the total reflection of tamper detection light in the waveguide is propagated,
So that the optical energy loss of sensor is eventually arrived at, and the paddy (recessed part) of fingerprint not in contact with detection zone because not resulting in
Light intensity loss, these detection light for carrying fingerprint ridge and paddy information finally reach imaging sensor 204, and imaging sensor 204 connects
Detection light is received, and changes to judge the position of finger touch according to the light intensity of respective pixel location, touch-control is realized；Further according to reception
Region luminous energy power judges ridge and paddy, and clearly fingerprint image is produced after image procossing, fingerprint recognition is realized, finally given whole
Face recognizes the touch screen of fingerprint.The feasibility of this structure is proved below by theory analysis.
By optical grating diffraction equation：
T(n0sini±n1Sin θ)=k λ, k=0, ± 1 ... (1)
Wherein, T is screen periods, n0For incident medium refractive index, n1For waveguide index, k is diffraction progression, and θ is grating
The angle of diffraction, i is incidence angle, and λ is incident wavelength, and h is fiber waveguide thickness ,+incident light and diffraction light homonymy are represented ,-it is heteropleural.No
Harm sets incident light with diffraction light as heteropleural, thus for -1 order diffraction, diffraction angle is met
From (2) formula, the specific angle of diffraction and coupling efficiency can be obtained by controlling screen periods and incidence angle.
Refering to Fig. 1, the width of detection light detectable area is L, and the cell width in fingerprint detection region is d.To make finger
The light path for being totally reflected propagation in fiber waveguide originally can be destroyed during contact, should be met：
n0/n1≤sinθ≤n2/n1 (3)
In formula, n2For finger refractive index.
To realize touch-control, detection light should cover all surfaces of touch-screen, should meet：
tanθ≤L/2h (4)
To realize fingerprint recognition, the width of finger, effective fingerprint detection should be not less than by detecting the width L of light detectable area
The width d in region should should be met not less than the minimum widith for recognizing fingerprint：
tanθ≥(L+d)/4h (5)
Enter detector for the light with finger print information is coupled out into waveguide, the one of the remote grating of fiber waveguide (202)
Side bottom sets a chamfer angles alpha, meets equation below：
θ-arcsin(n0/n1)≤α≤90° (6)
In formula, n0,n1, the respectively refractive index of air and fiber waveguide.The refractive index of the optical waveguide material can be single
Or gradual change.
By preparing grating in fiber waveguide close to the side of back light, now the side away from back light can cover one
Layer metallic reflector is to improve side coupling efficiency.Can also by preparing grating fiber waveguide away from back light side, this
When in grating surface covering layer of metal layer to improve coupling efficiency.From (1) (2) (3) (4) (5) formula, by controlling grating
Cycle T, lambda1-wavelength λ and incidence angle i, obtain thinner thickness, and realize that whole face collection refers under conditions of meeting the requirements
Line and touch-control.
The part coupled to ensure to carry on the back back light to be used for can normal incidence to grating, can back light and grating it
Between increase by one collimate prism so that light collimate.
In order to ensure security of the finger when detection zone is touched, one layer of anti-fingerprint pad pasting can be pasted in detection zone.
We are discussed respectively by specific embodiment below.
Fig. 2 is the 1st embodiment of the invention.Preparing grating in fiber waveguide close to back light side, in order to improve diffraction
Efficiency, metallic reflector is covered using oblique raster and in fiber waveguide opposite side.Generally, the back light for display
For white light, the most strong wave band of light intensity in backlight might as well be selected, 450nm wavelength lights might as well select detection light to visit as detection light
The peak width L of survey is 9mm, and effective fingerprint detection peak width d is 5mm, the refractive index of finger, the refractive index of waveguide, air
Refractive index be respectively 1.42,1.45,1.0, the thickness of fiber waveguide is 0.7mm, then can obtain corresponding diffraction by (3) (4) (5) formula
Angle should be met：
77.84°≤θ≤78.32°
θ=78 ° might as well be selected, then by (1) (2) Shi Ke get, when the back light normal incidence that wavelength is 530nm to grating
When, the angle of diffraction in waveguide is that 78 ° of corresponding screen periods are 373nm.
Fig. 3 is that screen periods are 373nm, it is seen that the diffraction efficiency of ± 1 grade of acquisition corresponding during light normal incidence, it can be seen that
- 1 grade of diffraction efficiency is up to more than 60% at 530nm.
Fig. 4 is the 2nd embodiment of the invention.The difference of this embodiment and the 1st embodiment is that preparing grating is in fiber waveguide
Side away from back light, is coupled using reflection diffraction, in order to improve diffraction efficiency, is plated using oblique raster and on grating
Layer of metal strengthens coupling.
Fig. 5 is the top view that the present invention is applied to two-dimentional touch-control.Grating 201 is placed on the adjacent both sides of fiber waveguide, image
Sensor 204 is placed on the another adjacent both sides of fiber waveguide, and relative with described grating 201, back light is mutually perpendicular to through two
After the grating 201 of placement is coupled, propagated respectively along orthogonal both direction, reach sensor 204.
Fig. 6 is that, when finger touch, corresponding imaging sensor 204A, 204B receive the image of fingerprint.Wherein side
Sensor 204A need to receive clearly fingerprint image and determine position of touch, it is therefore desirable to the image of high-resolution is passed
Sensor cell (CCD)；The sensor 204B of opposite side obtains fingerprint image without repeating, it is only necessary to determine position of touch, therefore
The image sensor cell (CCD) of low resolution is can select, or uses the photodetectors such as silicon photocell.
Fig. 7 shows that the light intensity that corresponding pixel is received compares former light when finger is touched at location of pixels x=13mm
About 20% is reduced by force, this pixel light intensity triggered because finger is touched is reduced, available for the position for judging touch-control generation
Put.
Fig. 8 is the partial perspective view of the optical touch screen of invention collection fingerprint recognition and touch control.
Experiment shows that the present invention utilizes grating diffration, the light of back light to be arrived after forming detection light after optical grating diffraction
Up to detection zone, the influence according to the ridge of fingerprint from paddy to detecting light is different, is transferred to imaging sensor, obtains clearly fingerprint
Image and accurately position of touch.So as to which full panel fingerprint collecting and touch-control can be realized, with regard to fingerprint can be gathered while touch-control,
The security of smart machine is improved, Consumer's Experience is enhanced, the ultrathin of feasible system significantly improves image quality, and
It is with low cost.
Optical touch screen of the present invention integrates fingerprint recognition and touch control, with safe, ultra-thin, image quality it is high and
The characteristics of low cost.
Claims (5)
1. a kind of collect touch-control and the optical touch screen of fingerprint recognition, it is characterised in that including back light (200), fiber waveguide
(202), grating (201), liquid crystal display module (203) and imaging sensor (204), described fiber waveguide (202) are located at described
Back light (200) top, in the adjacent both sides of described fiber waveguide (202), described grating (201), light are respectively set
The adjacent another both sides of waveguide (202) are respectively provided with an array imaging sensor (204), and described liquid crystal display module (203) is located at
Between described back light (200) and fiber waveguide (202), the upper surface of described fiber waveguide (202) is detection zone
(205), there is the fingerprint detection region (206) of period profile in the detection zone (205)；
The detection light that the light that described back light (200) is sent forms laterally propagation after described grating (201) diffraction exists
Received in described fiber waveguide (202) after multiple total reflection by described imaging sensor (204)；
The direction of described grating (201) and the direction of propagation of detection light in described fiber waveguide (202) are tilted, described grating
(201) diffraction angle meets equation below：
L+d/4h≤tanθ≤L/2h
In formula, L is the width of detection light detectable area, and h is the thickness of fiber waveguide, and d is the cell width in fingerprint detection region；
Described fiber waveguide (202) meets following relation in the chamfer angles alpha of the one side bottom away from described grating (201)
Formula：
θ-arcsin(n0/n1)≤α≤90°
In formula：n0,n1The respectively refractive index of air and fiber waveguide.
2. the optical touch screen of collection touch-control according to claim 1 and fingerprint recognition, it is characterised in that described grating
(201) it is located at the upper surface of described fiber waveguide (202), there is metallic reflector in the upper surface of described grating (201).
3. the optical touch screen of collection touch-control according to claim 1 and fingerprint recognition, it is characterised in that described grating
(201) it is located at the lower surface of described fiber waveguide (202), in the upper surface of the fiber waveguide (202) in described grating (201) region
With metallic reflector.
4. the optical touch screen of collection touch-control according to claim 1 and fingerprint recognition, it is characterised in that described detection zone
One layer of anti-fingerprint pad pasting is posted on domain (205).
5. the optical touch screen of the collection touch-control and fingerprint recognition according to any one of Claims 1-4, it is characterised in that
Provided with collimation prism between described grating (201) and described back light (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611181662.9A CN106940598B (en) | 2016-12-20 | 2016-12-20 | Collect the optical touch screen of touch-control and fingerprint recognition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611181662.9A CN106940598B (en) | 2016-12-20 | 2016-12-20 | Collect the optical touch screen of touch-control and fingerprint recognition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106940598A true CN106940598A (en) | 2017-07-11 |
| CN106940598B CN106940598B (en) | 2019-12-03 |
Family
ID=59469411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611181662.9A Active CN106940598B (en) | 2016-12-20 | 2016-12-20 | Collect the optical touch screen of touch-control and fingerprint recognition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106940598B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527039A (en) * | 2017-08-31 | 2017-12-29 | 京东方科技集团股份有限公司 | A kind of optical fingerprint identification device and display device |
| CN108196731A (en) * | 2018-03-19 | 2018-06-22 | 成都睿联创想科技有限责任公司 | A kind of touch detecting system with biological fingerprint identification function |
| CN108734157A (en) * | 2018-08-28 | 2018-11-02 | 北京乾沛科技有限公司 | First knuckle refers to venous collection device and method |
| WO2019019347A1 (en) * | 2017-07-27 | 2019-01-31 | 北京小米移动软件有限公司 | Optical fingerprint recognition method and apparatus, and computer readable storage medium |
| CN109786577A (en) * | 2019-01-30 | 2019-05-21 | 固安翌光科技有限公司 | A kind of fingerprint identification device OLED screen body and fingerprint identification device |
| CN111033518A (en) * | 2018-08-15 | 2020-04-17 | 深圳市汇顶科技股份有限公司 | LCD fingerprint identification system, optical fingerprint identification device under screen and electronic device |
| CN111095276A (en) * | 2019-11-19 | 2020-05-01 | 深圳市汇顶科技股份有限公司 | Under-screen fingerprint identification device, LCD fingerprint identification system, electronic equipment and light guide film |
| WO2020124792A1 (en) * | 2018-12-21 | 2020-06-25 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification display panel and fingerprint identification method |
| CN111382640A (en) * | 2018-12-29 | 2020-07-07 | 北京小米移动软件有限公司 | Screen protection film and terminal |
| US10824841B2 (en) | 2018-08-01 | 2020-11-03 | Guangzhou Tyrafos Semiconductor Technologies Co., Ltd | Under-screen fingerprint identification system |
| WO2020223882A1 (en) * | 2019-05-06 | 2020-11-12 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition device and electronic apparatus |
| CN112432308A (en) * | 2020-11-20 | 2021-03-02 | 珠海格力电器股份有限公司 | Touch interaction device, control method and device thereof and air conditioning unit |
| CN113193141A (en) * | 2021-04-16 | 2021-07-30 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN113377242A (en) * | 2021-06-22 | 2021-09-10 | 武汉华星光电技术有限公司 | Display module |
| WO2022206177A1 (en) * | 2021-04-02 | 2022-10-06 | 荣耀终端有限公司 | Fingerprint identification method and electronic device |
| KR102671087B1 (en) * | 2018-12-31 | 2024-05-31 | 엘지디스플레이 주식회사 | Optical fingerprint sensing display and, Method for driving the display |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677448A (en) * | 2013-12-31 | 2014-03-26 | 上海交通大学 | Grating structure-based optical waveguide touch screen |
| CN104020896A (en) * | 2014-05-14 | 2014-09-03 | 上海交通大学 | Optical touch control screen based on optical gratings |
| CN104281345A (en) * | 2013-07-01 | 2015-01-14 | 时代光电科技股份有限公司 | Light guide plate touch device utilizing total internal reflection of diffracted light |
| CN104751121A (en) * | 2015-03-05 | 2015-07-01 | 上海交通大学 | Optical waveguide type fingerprint identifying system based on grating structure |
| CN104898895A (en) * | 2015-05-04 | 2015-09-09 | 上海交通大学 | Optical waveguide type optical touch screen based on grating structure and compensation light source |
| CN105759330A (en) * | 2016-03-16 | 2016-07-13 | 上海交通大学 | Fingerprint identification system based on raster structure and microprism array |
| CN106201126A (en) * | 2015-01-13 | 2016-12-07 | 小米科技有限责任公司 | Touch screen and fingerprint recognition realize device and terminal unit |
-
2016
- 2016-12-20 CN CN201611181662.9A patent/CN106940598B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104281345A (en) * | 2013-07-01 | 2015-01-14 | 时代光电科技股份有限公司 | Light guide plate touch device utilizing total internal reflection of diffracted light |
| US20150035801A1 (en) * | 2013-07-01 | 2015-02-05 | Era Optoelectronics Inc. | Guide light touch device with total internal reflective diffraction light |
| CN103677448A (en) * | 2013-12-31 | 2014-03-26 | 上海交通大学 | Grating structure-based optical waveguide touch screen |
| CN104020896A (en) * | 2014-05-14 | 2014-09-03 | 上海交通大学 | Optical touch control screen based on optical gratings |
| CN106201126A (en) * | 2015-01-13 | 2016-12-07 | 小米科技有限责任公司 | Touch screen and fingerprint recognition realize device and terminal unit |
| CN104751121A (en) * | 2015-03-05 | 2015-07-01 | 上海交通大学 | Optical waveguide type fingerprint identifying system based on grating structure |
| CN104898895A (en) * | 2015-05-04 | 2015-09-09 | 上海交通大学 | Optical waveguide type optical touch screen based on grating structure and compensation light source |
| CN105759330A (en) * | 2016-03-16 | 2016-07-13 | 上海交通大学 | Fingerprint identification system based on raster structure and microprism array |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019019347A1 (en) * | 2017-07-27 | 2019-01-31 | 北京小米移动软件有限公司 | Optical fingerprint recognition method and apparatus, and computer readable storage medium |
| US10885298B2 (en) | 2017-07-27 | 2021-01-05 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for optical fingerprint recognition, and computer-readable storage medium |
| RU2728842C2 (en) * | 2017-07-27 | 2020-07-31 | Бейдзин Сяоми Мобайл Софтвэр Ко., Лтд. | Method and device for optical fingerprint recognition and computer-readable data medium |
| CN107527039A (en) * | 2017-08-31 | 2017-12-29 | 京东方科技集团股份有限公司 | A kind of optical fingerprint identification device and display device |
| CN107527039B (en) * | 2017-08-31 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of optical fingerprint identification device and display device |
| CN108196731A (en) * | 2018-03-19 | 2018-06-22 | 成都睿联创想科技有限责任公司 | A kind of touch detecting system with biological fingerprint identification function |
| TWI713921B (en) * | 2018-08-01 | 2020-12-21 | 廣州印芯半導體技術有限公司 | Under-screen fingerprint identification device |
| US10824841B2 (en) | 2018-08-01 | 2020-11-03 | Guangzhou Tyrafos Semiconductor Technologies Co., Ltd | Under-screen fingerprint identification system |
| CN111033518B (en) * | 2018-08-15 | 2023-10-24 | 深圳市汇顶科技股份有限公司 | LCD fingerprint identification system, off-screen optical fingerprint identification device and electronic device |
| CN111033518A (en) * | 2018-08-15 | 2020-04-17 | 深圳市汇顶科技股份有限公司 | LCD fingerprint identification system, optical fingerprint identification device under screen and electronic device |
| CN108734157A (en) * | 2018-08-28 | 2018-11-02 | 北京乾沛科技有限公司 | First knuckle refers to venous collection device and method |
| CN108734157B (en) * | 2018-08-28 | 2024-04-05 | 北京乾沛科技有限公司 | First knuckle finger vein collection device and method |
| WO2020124792A1 (en) * | 2018-12-21 | 2020-06-25 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification display panel and fingerprint identification method |
| CN111382640A (en) * | 2018-12-29 | 2020-07-07 | 北京小米移动软件有限公司 | Screen protection film and terminal |
| CN111382640B (en) * | 2018-12-29 | 2023-09-22 | 北京小米移动软件有限公司 | Screen protection film and terminal |
| KR102671087B1 (en) * | 2018-12-31 | 2024-05-31 | 엘지디스플레이 주식회사 | Optical fingerprint sensing display and, Method for driving the display |
| CN109786577A (en) * | 2019-01-30 | 2019-05-21 | 固安翌光科技有限公司 | A kind of fingerprint identification device OLED screen body and fingerprint identification device |
| WO2020223882A1 (en) * | 2019-05-06 | 2020-11-12 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition device and electronic apparatus |
| CN111095276B (en) * | 2019-11-19 | 2023-09-26 | 深圳市汇顶科技股份有限公司 | Under-screen fingerprint identification device, LCD fingerprint identification system, electronic equipment and light guide film |
| CN111095276A (en) * | 2019-11-19 | 2020-05-01 | 深圳市汇顶科技股份有限公司 | Under-screen fingerprint identification device, LCD fingerprint identification system, electronic equipment and light guide film |
| CN112432308A (en) * | 2020-11-20 | 2021-03-02 | 珠海格力电器股份有限公司 | Touch interaction device, control method and device thereof and air conditioning unit |
| WO2022206177A1 (en) * | 2021-04-02 | 2022-10-06 | 荣耀终端有限公司 | Fingerprint identification method and electronic device |
| CN113193141A (en) * | 2021-04-16 | 2021-07-30 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN113377242A (en) * | 2021-06-22 | 2021-09-10 | 武汉华星光电技术有限公司 | Display module |
| CN113377242B (en) * | 2021-06-22 | 2023-12-15 | 武汉华星光电技术有限公司 | Display module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106940598B (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106940598B (en) | Collect the optical touch screen of touch-control and fingerprint recognition | |
| CN104751121B (en) | Light wave conduction fingerprint recognition system based on optical grating construction | |
| US10083335B2 (en) | Image acquisition apparatus, terminal device, liquid crystal terminal device and image acquisition method | |
| CN107480584B (en) | Scanning type fingerprint identification and touch control integrated screen | |
| CN105184282B (en) | Optical finger print detection device and display equipment | |
| WO2015192621A1 (en) | Touch sensor, touch sensor device, fingerprint image acquisition device, and electronic device | |
| EP3731133A1 (en) | Under-screen fingerprint recognition apparatus and electronic device | |
| WO2020077506A1 (en) | Fingerprint recognition method and apparatus and terminal device with fingerprint recognition function | |
| CN204028936U (en) | Ultrathin fingerprint acquisition device, the display device of fingerprint can be gathered | |
| CN211319241U (en) | Optical fingerprint detection device, touch screen and electronic equipment | |
| CN208654763U (en) | Display screen component and electronic equipment | |
| CN208848216U (en) | Biometric sensors below display | |
| CN104318204A (en) | Fingerprint imaging system and method, fingerprint identification system, electronic apparatus | |
| WO2019178793A1 (en) | In-display biometric identification device and electronic device | |
| CN105759330A (en) | Fingerprint identification system based on raster structure and microprism array | |
| CN211319247U (en) | Fingerprint identification device, backlight unit, liquid crystal display and electronic equipment | |
| CN211319239U (en) | Optical fingerprint detection device, touch screen and electronic equipment | |
| WO2020191600A1 (en) | Fingerprint recognition apparatus and electronic device | |
| CN108664854A (en) | Fingerprint imaging module and electronic equipment | |
| CN211319240U (en) | Optical fingerprint detection device, touch screen and electronic equipment | |
| WO2020181447A1 (en) | Optical film layer structure, backlight module, display apparatus and electronic device | |
| CN211087274U (en) | Fingerprint detection device and electronic equipment | |
| WO2021146955A1 (en) | Optical fingerprint detection apparatus, touch screen and electronic device | |
| CN111902823A (en) | Optical fingerprint detection device, touch screen and electronic equipment | |
| TW201342159A (en) | Touch device and touch projection system using the same |
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 |