CN110709860B - Fingerprint identification device and electronic equipment - Google Patents
Fingerprint identification device and electronic equipment Download PDFInfo
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- CN110709860B CN110709860B CN201980002481.0A CN201980002481A CN110709860B CN 110709860 B CN110709860 B CN 110709860B CN 201980002481 A CN201980002481 A CN 201980002481A CN 110709860 B CN110709860 B CN 110709860B
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- 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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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Abstract
A fingerprint identification device and electronic equipment can prevent the sinking of a flexible display screen caused by finger pressing in the fingerprint identification process and improve the optical fingerprint identification performance. The fingerprint identification device comprises: the optical fingerprint identification device comprises a support structure and an optical fingerprint identification module; the support structure is arranged below the flexible display screen and used for supporting the flexible display screen; the support structure is provided with a plurality of light-passing small holes, and the light-passing small holes are used for transmitting fingerprint light signals returned by reflection or scattering of human fingers above the flexible display screen to the optical fingerprint identification module; the optical fingerprint identification module is arranged below the light-transmitting holes and is used for receiving the fingerprint light signals, wherein the fingerprint light signals are used for detecting fingerprint information of the finger.
Description
Technical Field
The present application relates to the field of optical fingerprint technology, and more particularly, to a fingerprint identification apparatus and an electronic device.
Background
In an organic light emitting diode (organic light emitting diode, OLED) display screen, a screen in which a screen substrate is made of flexible materials such as plastic or metal is called a flexible screen, wherein the flexible screen includes two product forms of a curved screen and a foldable flexible screen. The screen of the curved surface screen is fixedly bent into a certain shape in the production process, and the cover plate adopts glass with supporting function, so that the finished curved surface screen with the glass cover plate does not have the characteristic of flexibility. The cover plate of the foldable flexible screen is made of flexible transparent materials, and the finished product of the foldable flexible screen with the flexible cover plate can still be bent and deformed.
However, in the foldable flexible screen, since the foldable flexible screen does not have a supporting force, the screen needs to be integrally supported by a supporting structure, so that the screen is prevented from being deformed in the use process of a user. The traditional optical fingerprint identification scheme is that the middle frame part of the fingerprint identification area is hollowed out, and as no middle frame is arranged at the fingerprint identification area to support the screen, when the fingerprint identification area is pressed by a finger, the screen is caused to collapse, so that the screen display at the fingerprint identification area is obviously different from the screen display at other areas, and the user experience is influenced. Meanwhile, due to deformation of the screen of the fingerprint identification area in the use process, transmission of fingerprint light signals reflected by the finger is affected, and optical fingerprint identification performance is also deteriorated.
Therefore, how to solve the sagging of the flexible display screen caused by finger pressing in the fingerprint identification process and to improve the optical fingerprint identification performance is a problem to be solved.
Disclosure of Invention
The embodiment of the application provides a fingerprint identification device and electronic equipment, can solve the subsidence of flexible display screen that the finger was pressed and is caused in the fingerprint identification process, and improves its optical fingerprint identification performance.
In a first aspect, an apparatus for fingerprint identification is provided, suitable for an electronic device having a flexible display screen, comprising: the optical fingerprint identification device comprises a support structure and an optical fingerprint identification module;
the support structure is arranged below the flexible display screen and used for supporting the flexible display screen;
the support structure is provided with a plurality of light-passing small holes, and the light-passing small holes are used for transmitting fingerprint light signals returned by reflection or scattering of human fingers above the flexible display screen to the optical fingerprint identification module;
the optical fingerprint identification module is arranged below the light-transmitting holes and is used for receiving the fingerprint light signals, wherein the fingerprint light signals are used for detecting fingerprint information of the finger.
According to the technical scheme, the support structure is arranged below the flexible display screen, the plurality of light-passing small holes are formed in the support structure, transmission of fingerprint light signals returned through reflection or scattering of human fingers above the display screen can be met, support can be provided for the flexible display screen in the fingerprint pressing area, influence of pressing on screen display is reduced, and fingerprint detection quality is improved.
In one possible implementation, the support structure is a middle frame of the electronic device.
In one possible implementation manner, an open area is provided on the support structure, and a plurality of light-passing pores are provided on the open area.
In one possible implementation, the upper surface of the support structure is on the same plane, and the lower surface of the support structure is formed with a step structure at the edge region of the opening region.
In one possible implementation, the plurality of light-passing apertures are configured to transmit specific-angle fingerprint light signals of the fingerprint light signals and block non-specific-angle fingerprint light signals of the fingerprint light signals.
In one possible implementation, the optical fingerprint recognition module includes a plurality of pixel units, and the plurality of pixel units are used for receiving the specific angle fingerprint light signals.
In one possible implementation, the specific angle fingerprint light signal is a fingerprint light signal incident perpendicular to the plurality of light passing apertures.
In one possible implementation, the depth to diameter ratio of the plurality of light passing apertures is greater than 10.
In one possible implementation, a center distance between any two adjacent light-passing holes in the plurality of light-passing holes is less than 1/2λ min Wherein lambda is min Is the minimum of the fingerprint period.
In one possible implementation, the optical fingerprint recognition module includes an optical lens assembly including at least one optical lens.
In one possible implementation, the field angle of each of the plurality of light passing apertures is greater than the field angle of the optical lens assembly.
In one possible implementation, the center distance of any adjacent light-passing apertures of the plurality of light-passing apertures is greater than 2λ max Wherein lambda is max Is the maximum of the fingerprint period.
In one possible implementation, the plurality of light-passing apertures are circular apertures or polygonal apertures of the same size.
In one possible implementation, the plurality of light-passing apertures are arranged at specific regular intervals.
In one possible implementation, the arrangement of the plurality of light-transmitting apertures is any one or more of a cross arrangement, a matrix arrangement, and a random arrangement.
In one possible implementation, the apparatus further includes: and the transparent soft adhesive layer is used for connecting the flexible display screen and the supporting structure.
In one possible implementation, the transparent soft gel layer extends into the plurality of light passing apertures.
In one possible implementation, the apparatus further includes: and the fixing assembly is used for fixing the optical fingerprint identification module on the supporting structure.
In one possible implementation, the open area is disposed below the fingerprint detection area;
the optical fingerprint identification module is specifically used for receiving the fingerprint light signal of the fingerprint detection area.
In one possible implementation, the center of the opening area and the center of the fingerprint detection area are both located on the same vertical line perpendicular to the optical fingerprint recognition module.
In a second aspect, there is provided an electronic device comprising: a flexible display screen and the fingerprint recognition device of the first aspect or any possible implementation manner of the first aspect, wherein the fingerprint recognition device is disposed below the flexible display screen.
In one possible implementation, the fingerprint recognition device is disposed below a non-bending region of the flexible display screen.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device to which an embodiment of the present application is applied.
Fig. 2 is a schematic diagram of a partial structure of an electronic device according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a fingerprint recognition apparatus according to an embodiment of the present application.
Fig. 4 is a schematic structural view of another fingerprint recognition apparatus according to an embodiment of the present application.
Fig. 5 is a schematic diagram of an arrangement of light passing apertures according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of another fingerprint recognition device according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of another fingerprint recognition device according to an embodiment of the present application.
Fig. 8 is a schematic structural view of another fingerprint recognition apparatus according to an embodiment of the present application.
Fig. 9 is a schematic structural view of another fingerprint recognition apparatus according to an embodiment of the present application.
Fig. 10 is a schematic block diagram of an electronic device according to an embodiment of the present application.
Fig. 11 is a schematic perspective view of an electronic device according to an embodiment of the present application.
Detailed Description
As intelligent terminals move into the age of flexible display screens, the screens of electronic devices are not limited to flat displays, but develop in the directions of "Bendable" (folding) and "Bendable" (rodable), and flexible display screens in a Bendable state can be bent at a fixed angle; while the foldable and bendable flexible display screen can be bent at will on one face and on any face. Because the flexible display screen has the characteristics, the electronic equipment of the flexible display screen has more attractive appearance and portability and has wide application prospect. Meanwhile, with the development of biometric identification technology, application of biometric identification, particularly fingerprint identification, to electronic devices is becoming more and more widespread, and thus, how to realize high-performance fingerprint identification on electronic devices with flexible screens has become a popular need.
The application provides a fingerprint identification's device technical scheme suitable for flexible display screen, as a common application scenario, the technical scheme of this application embodiment can be applied in smart mobile phone, panel computer, wearing equipment and other mobile terminal or other electronic equipment that have flexible display screen. And the technical scheme of the embodiment of the application can be used for a biological characteristic recognition technology. The biometric technology includes, but is not limited to, fingerprint recognition, palm print recognition, iris recognition, face recognition, living body recognition, and the like. For ease of explanation, fingerprint recognition techniques are described below as examples.
In the electronic device, the fingerprint identification system in the embodiment of the application includes an optical fingerprint device, and the fingerprint identification device may be disposed in a local area or a whole area below the flexible display screen, so as to form an Under-screen (render-display) optical fingerprint system.
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
As shown in fig. 1, a schematic structural diagram of an electronic device to which the embodiments of the present application may be applied is shown in fig. 1, where the electronic device 10 includes a flexible display screen 120, a fingerprint recognition device 130, and a middle frame 140, where the flexible display screen 120 is specifically a flexible foldable display screen or a flexible bendable display screen, both a substrate and a cover plate of the flexible display screen are made of flexible materials, for example, the substrate is made of plastic or flexible metal, and the cover plate is made of a transparent inorganic film material. The middle frame 140 is used for supporting the flexible display screen 120, and preventing the flexible display screen from being deformed when the user uses the flexible display screen. A window 141 is disposed on the middle frame 140, and the fingerprint recognition device 130 is disposed in a region below the window 141.
In this embodiment, the fingerprint recognition device 130 includes an optical fingerprint sensor, where the optical fingerprint sensor includes an induction array 133 having a plurality of optical induction units 131, and an area where the induction array 133 is located or an induction area thereof is the fingerprint detection area 103 of the fingerprint recognition device 130. The fingerprint monitoring area 103 is located partially or wholly in the area below the window 141. Optionally, the fingerprint detection area 103 is located in a display area of the flexible display screen 120.
As an alternative embodiment, the flexible display 120 may be a flexible display using a self-luminous display unit, such as a flexible organic light emitting diode (flexible organic light emitting diode, FOLED) display. The fingerprint recognition device 130 may use the display unit (i.e., OLED light source) of the FOLED display 120 located in the fingerprint detection area 103 as an excitation light source for optical fingerprint detection. When the finger 110 is pressed against the fingerprint detection area 103, the display 120 emits a light 111 to the target finger 110 above the fingerprint detection area 103, and the light 111 is reflected on the surface of the finger 110 to form reflected light or scattered light scattered inside the finger 110, and in the related patent application, the reflected light and the scattered light are collectively referred to as reflected light for convenience of description. Since ridges (ribs) and valleys (valley) of the fingerprint have different light reflection capacities, the reflected light 151 from the fingerprint ridge 101 and the reflected light 152 from the fingerprint valley 102 have different light intensities, and after the reflected light passes through the optical component, the reflected light is received by the sensing array 134 in the fingerprint identification device 130 and converted into a corresponding electrical signal, i.e. a fingerprint detection signal; fingerprint image data may be obtained based on the fingerprint detection signal and further fingerprint matching verification may be performed, thereby implementing an optical fingerprint recognition function at the electronic device 10.
In other embodiments, the flexible display 120 may be a flexible display employing no self-luminous display unit, such as a flexible liquid crystal display (flexible liquid crystal display, FLCD) display. To support the off-screen fingerprint detection of the liquid crystal display, the optical fingerprint system of the electronic device 10 may further include an excitation light source for optical fingerprint detection, where the excitation light source may be specifically an infrared light source or a light source of non-visible light with a specific wavelength, which may be disposed under a backlight module of the liquid crystal display or an edge area under a protective cover plate of the electronic device 10, and the fingerprint recognition device 130 may be disposed under an edge area of the liquid crystal panel or the protective cover plate and guided through an optical path so that fingerprint detection light may reach the fingerprint recognition device 130; alternatively, the fingerprint recognition device 130 may be disposed below the backlight module, and the backlight module may be configured to allow fingerprint detection light to pass through the liquid crystal panel and the backlight module and reach the fingerprint recognition device 130 by making holes or other optical designs on a film layer such as a diffusion sheet, a brightness enhancement sheet, a reflection sheet, etc. When the device 130 employing fingerprint recognition employs an internal light source or an external light source to provide an optical signal for fingerprint detection, the detection principle is consistent with that described above.
It should also be understood that, in the embodiments of the present application, the sensing array in the fingerprint recognition device may also be referred to as a pixel array, and the optical sensing unit or sensing unit in the sensing array may also be referred to as a pixel unit.
It should be noted that, the fingerprint recognition device in the embodiment of the present application may also be referred to as an optical fingerprint recognition module, a fingerprint acquisition device, etc., where the above terms may be replaced with each other.
When the fingerprint detection area 103 is located in the display area of the flexible display screen 120, there is a certain air gap due to the fact that there is no support of the middle frame 140 between the fingerprint recognition device 130 and the flexible display screen 120. In one possible implementation manner of the embodiment of the present application, for example, as shown in fig. 2 (a), the window 141 is the same as the shape and size of the fingerprint detection area 103, and is disposed directly above the fingerprint detection area 103, and air is in the window 141. When a finger of a user presses the fingerprint detection area 103 on the flexible display screen 120, the flexible display screen 120 collapses in the pressed area, so that the image display of the finger pressed area on the flexible display screen 120 is different from the image display of other areas, and the user experience is affected.
In another possible implementation manner of the embodiment of the present application, for example, as shown in (b) of fig. 2, the window 141 is disposed above the fingerprint detection area 103, and a transparent supporting material 142, such as transparent glass or resin, is filled in the window 141. In the process, since the transparent filling material 142 in the middle frame 140 and the window 141 cannot be simultaneously prepared, strict control of process parameters is required to reduce the height difference between the middle frame 140 and the transparent filling material 142. If the upper surface of the transparent filling material 142 is higher than the upper surface of the middle frame 140, the screen above the window 141 is "swelled" to affect the image display and lifetime of the flexible display 120.
Based on this, this application provides a fingerprint identification's device and electronic equipment sets up bearing structure under flexible display screen bearing structure is last to set up a plurality of light apertures, can enough satisfy fingerprint detection's optical signal transmission, improves fingerprint detection's quality, can provide the support for fingerprint detection region's flexible display screen again, reduces to press the influence to screen display.
The fingerprint recognition device according to the embodiments of the present application will be described in detail below with reference to fig. 3 to 9.
In the embodiments shown below, the same reference numerals are used for the same structures for the sake of understanding, and detailed description of the same structures is omitted for the sake of brevity.
Fig. 3 is a schematic block diagram of a fingerprint identification apparatus 20 according to an embodiment of the present application, which is suitable for an electronic device with a flexible display screen.
As shown in fig. 3, the fingerprint recognition apparatus 20 may include: a support structure 200 and an optical fingerprint recognition module 300;
the support structure 200 is disposed below the flexible display screen 120, and is used for supporting the flexible display screen 120;
the support structure 200 is provided with a plurality of light-transmitting apertures 210, and the plurality of light-transmitting apertures 210 are used for transmitting fingerprint light signals returned by reflection or scattering of the human finger above the display screen to the optical fingerprint recognition module 300;
the optical fingerprint identification module 300 is disposed below the light holes 210, and is configured to receive the fingerprint light signal, where the fingerprint light signal is used for detecting fingerprint information of the finger.
Alternatively, the support structure 200 may be the middle frame 140 of fig. 1.
Optionally, the support structure 200 may also be a support layer of sufficient strength to support and protect the flexible display 120. For example, the supporting structure 200 is a sheet steel sheet, the steel sheet is disposed below the flexible display screen, the area of the steel sheet is greater than or equal to the display area of the flexible display screen, and the steel sheet may completely support all the display area of the flexible display screen 120.
It should be appreciated that the support structure 200 may be any material having a supporting function, which is not limited in this embodiment.
Optionally, an open area 201 is disposed on the support structure 200, where the open area 201 is provided with a plurality of light-passing holes 210, and the open area 201 is polygonal or circular.
Optionally, the upper surface of the support structure 200 is on the same plane, and the lower surface of the support structure 200 extends to form a step structure at the edge area of the opening area 201.
Optionally, the lower surface of the support structure 200 extends upward at the edge region of the open area 201 to form a groove structure. For example, as shown in fig. 4 (a), the supporting structure 200 is a middle frame, the upper surface of the middle frame is on the same plane, and is used for supporting the flexible display screen 120 above the middle frame, the edge of the open hole area 201 on the lower surface of the middle frame is upwards provided with a groove structure, so that the thickness of the supporting structure 200 at the open hole area 201 is smaller than that of other areas, and the lower surface of the supporting structure 200 at the open hole area 201 is higher than that of other areas. Under the condition, the depth-to-diameter ratio of the light-passing small holes on the open hole area can be reduced under the same process condition, and the fingerprint light signals received by the light-passing small holes can be increased.
Optionally, the lower surface of the support structure 200 extends downward at the edge region of the open area 201 to form a convex structure. For example, as shown in fig. 4 (b), the supporting structure 200 is a middle frame, the upper surface of the middle frame is on the same plane, and is used for supporting the flexible display screen 120 above the middle frame, the edge of the open hole area 201 on the lower surface of the middle frame forms a convex structure downwards, so that the thickness of the supporting structure 200 at the open hole area 201 is greater than that of other areas, and the lower surface of the supporting structure 200 at the open hole area 201 is lower than that of other areas. Under the condition, the depth-to-diameter ratio of the light-passing small holes on the open pore area can be increased under the same process condition, and the light selectivity of the light-passing small holes is enhanced.
Optionally, the plurality of light passing apertures 210 are circular apertures or polygonal apertures.
Alternatively, the plurality of light-passing apertures 210 may be the same in shape and size. It should be understood that the shapes and sizes of the plurality of light-passing apertures 210 may also be different, which is not limited in the embodiments of the present application.
Optionally, the plurality of light-passing apertures 210 are arranged at specific regular intervals. The adjacent light passing apertures 210 are spaced apart to provide support.
Optionally, the plurality of light-transmitting apertures 210 are arranged in any one or more of a cross arrangement, a matrix arrangement and a random arrangement.
For example, as a possible embodiment, as shown in (a) of fig. 5, the plurality of circular light-transmitting apertures 210 are all circular apertures having the same shape and size, and the plurality of circular apertures are arranged in a matrix, wherein each adjacent two circular light-transmitting apertures have the same pitch.
Alternatively, as a possible embodiment, as shown in (b) of fig. 5, the plurality of circular light-passing holes 210 are all circular holes with the same shape and size, and the plurality of circular light-passing holes are alternately arranged at intervals, wherein the interval between every two adjacent circular light-passing holes is the same.
Alternatively, as a possible embodiment, as shown in (c) of fig. 5, the plurality of circular light-passing holes 210 are square holes with the same shape and size, and the plurality of square light-passing holes are arranged in a matrix, wherein the distance between every two adjacent circular light-passing holes is the same.
Alternatively, as a possible implementation manner, as shown in (d) of fig. 5, the plurality of circular light-passing holes 210 are all regular hexagonal holes with the same shape and size, and the plurality of regular hexagonal light-passing holes are alternately arranged at intervals, where the interval between every two adjacent regular hexagonal light-passing holes is the same.
Alternatively, a micro-nano processing process or a nano printing process may be used to prepare the plurality of light-transmitting apertures 210 on the open area 201, specifically, a micro-nano processing process is used to perform small-hole pattern lithography on the support structure, and the support structure material at the small-hole pattern is etched to form the plurality of light-transmitting apertures.
In this embodiment, the area of the plurality of light-passing holes 210 on the open area 201 is a photosensitive area, and is used for transmitting the fingerprint optical signal to the optical fingerprint identification module 300, and the area of the open area 201 except for the plurality of light-passing holes 210 is a non-photosensitive area, and cannot transmit the fingerprint optical signal. It should be appreciated that the greater the ratio of the area of the photosensitive area to the area of the open area, the greater the intensity of the fingerprint light signal transmitted to the light detection array 320.
Optionally, as shown in fig. 6, in an embodiment of the present application, the optical fingerprint identification module 300 may include a light detection array 320, where the light detection array 320 includes a pixel array 322 of a plurality of pixel units 321, and the pixel array 322 of the plurality of pixel units 321 may be the sensing array 133 of the plurality of optical sensing units 131 in fig. 1. The pixel array 322, as well as the readout circuitry and other ancillary circuitry electrically connected to the pixel array, may be fabricated on a chip (Die) by semiconductor processes, such as an optical imaging chip or an optical fingerprint sensor. The pixel array 322 is specifically a Photo detector (Photo detector) array, which includes a plurality of Photo detectors distributed in an array, and the Photo detectors can be used as the pixel units 321 as described above.
Optionally, the optical fingerprint recognition module 300 may further include an optical component 310, where the optical component 310 may be disposed above the pixel array of the light detection array 320, and may specifically include a light guiding layer, a Filter layer (Filter), and other optical elements, where the Filter layer may be used to Filter out ambient light penetrating the finger, and the light guiding layer is mainly used to guide the fingerprint light signal reflected from the finger surface to the pixel array for optical detection.
Optionally, the light guiding layer of the optical component 310 may be implemented in various manners, for example, the light guiding layer 311 may be a Collimator (Collimator) layer made of a semiconductor silicon wafer, which has a plurality of collimating units or a micro-hole array, where the collimating units may be specifically small holes, the light vertically incident to the collimating units from the fingerprint light signal reflected by the finger may pass through and be received by the pixel units below the collimating units, and the light with an excessively large incident angle is attenuated by multiple reflections inside the collimating units, so that each pixel unit 321 can only receive the fingerprint light signal directly above the collimating unit, and thus the pixel array 322 can detect the fingerprint image of the finger.
Alternatively, the light guiding layer may be an optical Lens (Lens) layer, which has one or more Lens units, such as a Lens group formed by one or more aspheric lenses, for converging the fingerprint light signal reflected from the finger to the pixel array of the light detecting array 320 below the Lens unit, so that the pixel array 322 may perform imaging based on the fingerprint light signal, thereby processing the fingerprint image signal of the finger. Optionally, the optical lens layer may further form a pinhole in the optical path of the lens unit, and the pinhole may cooperate with the optical lens layer to expand the field of view of the optical fingerprint recognition module 300, so as to improve the fingerprint imaging effect of the optical fingerprint recognition module 300.
Alternatively, the light guide layer may be a Micro-Lens layer having a microlens array formed of a plurality of microlenses, which may be formed over the pixel array 322 of the light detection array 320 through a semiconductor growth process or other processes, and each microlens may correspond to one of the pixel units 321 of the pixel array 322, respectively. And, other optical film layers, such as a dielectric layer or a passivation layer, may be further formed between the microlens layer and the pixel unit, and more particularly, a light blocking layer having micro holes may be further included between the microlens layer and the pixel unit, wherein the micro holes are formed between the corresponding microlenses and the pixel unit, and the light blocking layer may block optical interference between adjacent microlenses and pixel units, and allow light corresponding to the pixel unit to be converged into the inside of the micro holes by the microlenses and transmitted to the pixel unit via the micro holes for optical fingerprint imaging.
It should be appreciated that several implementations of the light guiding layer described above may be used alone or in combination, e.g. a micro lens layer may be further provided below the collimator layer or the optical lens layer. Of course, when the collimator layer or the optical lens layer is used in combination with the microlens layer, the specific laminated structure or the optical path thereof may need to be adjusted according to actual needs.
It should also be appreciated that in particular implementations, the optical assembly 310 may be packaged in the same optical fingerprint component as the light detection array 320. For example, the optical component 310 may be packaged in the same optical fingerprint chip as the optical detecting portion 134, or the optical component 310 may be disposed outside the chip where the optical detecting array 320 is located, for example, the optical component 310 is attached above the chip, or some of the components of the optical component 310 are integrated in the chip. The embodiments of the present application are not limited thereto.
Optionally, as shown in fig. 6, the fingerprint recognition device 20 may further include a transparent adhesive layer 400 for connecting the flexible display screen 120 and the support structure 200. The supporting structure 200 may be fully attached to the flexible display screen 120 by a transparent soft adhesive layer 400, where the transparent soft adhesive layer 400 may be a transparent and soft silica gel layer, or may be other transparent liquid glue or transparent soft glue.
Optionally, the plurality of light-passing holes 210 on the support structure 200 may be filled with a transparent soft adhesive layer 400, or may be filled with air.
Optionally, as shown in fig. 6, the fingerprint recognition device 20 may further include a fixing component 500, where the fixing component 500 is used to fix the optical fingerprint recognition module 300 on the support structure 200. Optionally, when the support structure 200 is a middle frame, the optical fingerprint recognition module 300 may be fixed on the support structure 200 by a screw mounting and fixing manner, a glue attaching and fixing manner, a welding and fixing manner, or a coupling and fixing manner. The fixing assembly 500 may have an assembly structure corresponding to the above-mentioned fixing manner.
In this application, when the structures in the optical fingerprint recognition module 300 are different, the designs of the shapes and sizes of the light-passing holes are different.
Alternatively, as a specific embodiment, as shown in fig. 7, the optical fingerprint recognition module 300 includes a light detection array 320, and the light detection array 320 includes a plurality of pixel units 321. In this embodiment, the light-passing apertures 210 are configured to transmit fingerprint light signals with specific angles in the fingerprint light signals and block fingerprint light signals with non-specific angles in the fingerprint light signals. The plurality of pixel units 321 in the light detection array 320 receive the specific angle fingerprint light signal.
Optionally, the specific angle fingerprint light signal includes a fingerprint light signal incident perpendicular to the plurality of light passing apertures 210. Optionally, the specific angle fingerprint light signal further includes a light signal incident substantially perpendicular to the plurality of light passing apertures 210.
It should be understood that the specific angle fingerprint light signal may further include a fingerprint light signal incident non-perpendicular to the plurality of light-passing apertures 210, which is not limited in the embodiment of the present application.
For example, the plurality of light-passing apertures 210 are configured to transmit fingerprint light signals incident substantially perpendicular to the plurality of light-passing apertures, and the plurality of light-passing apertures 210 may also be referred to as collimators, and each light-passing aperture 210 is a collimating unit. Specifically, the fingerprint light signals that are substantially perpendicularly incident to the light-passing apertures 210 are transmitted to the pixel units 321 by the light-passing apertures 210, while the light signals that are incident to the light-passing apertures 210 at a large angle are attenuated by multiple reflections inside the light-passing apertures 210 and cannot be transmitted to the pixel units 321, so that each pixel unit 321 receives the fingerprint light signals directly above it, and the pixel units 321 can detect the fingerprint image of the finger.
In this embodiment, when the light-passing small hole is a polygonal small hole, the diameter of the light-passing small hole 210 is the minimum diameter of the light-passing small hole 210. When the light-passing apertures 210 are identical in shape and size and are arranged in an array, the period of the light-passing apertures 210 is the center distance between two adjacent light-passing apertures; when the shapes and sizes of the light-passing apertures 210 are different, the center distances of two adjacent light-passing apertures are different, wherein the smallest center distance is the period of the light-passing apertures 210.
Optionally, the plurality of light passing apertures 210 have a diameter greater than a first predetermined value so as to transmit enough light for imaging. The diameters of the light-passing apertures 210 are also smaller than a second predetermined value to ensure that light signals incident to the light-passing apertures 210 at a large angle are blocked. The period of the plurality of light-transmitting apertures 210 is also smaller than a third predetermined value to be different from the period of the fingerprint lines, so as to facilitate the processing of the fingerprint image. That is, the parameters of the light passing holes 210 may be set such that the fingerprint light signal of one fingerprint ridge and/or one fingerprint valley incident substantially vertically downward from the corresponding area above the optical fingerprint recognition module 300 is maximally transmitted to the light detection array 320, while other light signals are maximally blocked.
Optionally, the grain period length of the finger printLambda is lambda min To lambda max Between, i.e. the distance between two adjacent ridges or two adjacent valleys on the fingerprint is at least lambda min Of the light-passing apertures 210, the period of the light-passing apertures 210 is less than 1/2λ min Said 1/2 lambda min The third preset value is the third preset value. For example, the fingerprint has a minimum period of 200 μm, and when the plurality of light-passing holes 210 are shown in fig. 5 (a) and (b), the center distance between the circular light-passing holes and the circular light-passing holes adjacent thereto is less than 100 μm.
Optionally, the depth of the plurality of light-passing apertures 210 is D, that is, the thickness of the support structure is D, and the depth-to-diameter ratio of the plurality of light-passing apertures 210 is 10 or more, that is, the depth-to-diameter ratio of the plurality of light-passing apertures 210 is 10 or more. The first preset value and the second preset value are determined by calculating the depth-to-diameter ratio of the light-passing apertures 210. Alternatively, the thickness D of the support structure may be set according to the diameter of the plurality of light passing apertures 210.
Optionally, in an embodiment of the present application, the optical fingerprint recognition module 300 may further include an optical component 310, where the optical component 310 may include a collimation layer 311 for further selecting an incident fingerprint light signal.
Alternatively, the plurality of holes on the collimating layer 311 may have the same shape and size as the plurality of light-transmitting holes 210 on the supporting structure 200 and correspond to each other. Alternatively, the plurality of holes on the alignment layer 311 may be smaller than the plurality of light-passing holes 210 on the support structure 200, for example, one light-passing hole 210 corresponds to the plurality of holes on the alignment layer, that is, the plurality of holes on the alignment layer all receive the light signal transmitted by the same light-passing hole.
Optionally, the optical assembly 310 may further include a filter layer 312. Optionally, the filter layer 312 may be an infrared cut filter, which is used to filter out optical signals in the infrared band, so as to reduce the influence of ambient light signals such as infrared light, and thus improve fingerprint recognition performance. The filter layer 312 may be disposed between the collimating layer 311 and the light detecting array 320, or may be disposed above the collimating layer 311. For example, a blue filter material may be coated on top of the light detection array 320, or a blue filter may be provided, so that the fingerprint image collected by the light detection array 320 is a blue fingerprint image, i.e. fingerprint light signals of red, blue and infrared bands are filtered out.
Optionally, in an embodiment of the present application, the fingerprint recognition device 20 may further include a transparent soft adhesive layer 400 and a fixing component 500.
Alternatively, as another specific embodiment, as shown in fig. 8, the optical fingerprint recognition module 300 includes an optical component 310 and a light detection array 320. The light detection array 320 includes a plurality of pixel units 321.
Optionally, the optical assembly 310 may include an optical lens assembly 313.
Optionally, the optical lens assembly 313 includes at least one optical lens. For example, the optical lens assembly 313 is a lens group composed of one or more optical lenses, or the optical lens assembly 313 is a microlens array composed of a plurality of microlenses.
In this embodiment, the plurality of light-passing holes 210 in the open area 201 are configured to transmit the fingerprint light signal to the optical lens assembly 313, and one light-passing hole transmits a fingerprint light signal unit, where the fingerprint light signal unit is a light signal reflected by a partial area on a finger, the optical lens assembly 313 images a plurality of fingerprint light signal units, and the plurality of pixel units 321 receives a plurality of imaging fingerprint light signal units passing through the optical lens assembly 313 and processes the plurality of imaging fingerprint light signal units to obtain a fingerprint image signal.
Optionally, the depth-to-diameter ratio of the plurality of light-passing apertures 210 is smaller than a fourth preset value, so as to expand a field of view (FOV) angle of the plurality of light-passing apertures 210, preventing loss of fingerprint light signals of the finger partial area. The diameters of the plurality of light-passing apertures 210 are also smaller than a fifth predetermined value to ensure that the flexible display screen is depressed to affect the image display when a finger is pressed against the light-passing apertures. The period of the light-transmitting holes is larger than a sixth preset value so as to be different from the period of the fingerprint lines, and processing of the fingerprint images is facilitated. That is, the parameters of the plurality of light passing apertures 210 may be set such that the light detection array 320 receives the fingerprint light signal of the entire area of the finger to the maximum without affecting the display of the flexible display 120.
Optionally, the fingerprint has a line period length lambda min To lambda max Between, i.e. the distance between two adjacent ridges or two adjacent valleys on the fingerprint is at most lambda max . Of the plurality of light-passing apertures 210, the period of the plurality of light-passing apertures 210 is greater than 2λ max Said 2λ max The sixth preset value is the above-mentioned sixth preset value. For example, the fingerprint has a grain period of at most 1mm, and when the plurality of light-passing holes 210 are shown in fig. 5 (a) and (b), the center distance between the circular light-passing holes and the circular light-passing holes adjacent thereto is greater than 2mm.
Optionally, the field angle of the plurality of light passing apertures 210 is greater than the field angle of the optical lens assembly 313. In this embodiment, the depth-to-diameter ratio of the light-passing apertures 210 determines the field angle of the light-passing apertures, and when the depth of the light-passing aperture 210 is smaller and the diameter is larger, the field angle of the light-passing aperture 210 is larger. The depth-to-diameter ratio of the plurality of light passing apertures 210 is determined by the angle of view, thereby determining the fourth preset value.
Optionally, the fifth preset value is determined by the pressing effect of the finger on the flexible display screen 120 at the light-transmitting aperture.
Optionally, in an embodiment of the present application, the optical component 310 may further include a filter layer 312.
Optionally, in an embodiment of the present application, the fingerprint recognition device 20 may further include a transparent soft adhesive layer 400 and a fixing component 500.
In this embodiment, the sensing area of the pixel array 322 in the light detection array 320 on the flexible display screen 120 is the fingerprint detection area 301 of the optical fingerprint recognition module 300, that is, when a finger is placed in the fingerprint detection area 301 on the flexible display screen 120, the pixel array 322 in the light detection array 320 can receive a fingerprint light signal reflected by the finger.
Alternatively, as shown in fig. 9, the fingerprint detection area 301 is located in the display area of the flexible display screen 120.
Alternatively, as a possible implementation manner, as shown in fig. 9, the optical fingerprint recognition module 300 is disposed below the display area of the flexible display screen 120.
Alternatively, as another possible implementation manner, the optical fingerprint recognition module 300 may be further disposed at another location, such as a side surface of the flexible display screen 120 or an edge non-light-transmitting area of the electronic device, and the fingerprint light signal reflected by the finger is guided to the optical fingerprint recognition module 300 through the optical path design, so that the fingerprint detection area 301 is actually located in the display area of the flexible display screen 120.
Alternatively, the area of the fingerprint detection area 301 may be the same as the area of the pixel array 322, for example, the fingerprint detection area 301 may have the same size as the pixel array 322 and be located directly above the pixel array 322.
Optionally, the area of the fingerprint detection area 301 may also be different from the area of the pixel array 322, for example, by a light path design such as lens imaging, a reflective folded light path design, or other light path designs such as light converging or reflecting, the area of the fingerprint detection area 301 may be made larger than the area of the pixel array 322.
Therefore, when the user needs to unlock the electronic device or perform other fingerprint verification, the user only needs to press the finger against the fingerprint detection area 301 located on the flexible display screen 120, so as to implement fingerprint input. Because the fingerprint detection can be realized under the screen, the electronic device adopting the structure does not need to have a special reserved space on the front surface to set fingerprint keys (such as Home keys), so that a comprehensive screen scheme can be adopted, i.e. the display area of the flexible display screen 120 can be basically expanded to the front surface of the whole electronic device.
Alternatively, the light detection array 320 in the optical fingerprint recognition module 300 may be an optical fingerprint sensor, where the area of the fingerprint detection area 301 of the optical fingerprint recognition module 300 is smaller and the position is fixed.
Optionally, the light detection array 320 in the optical fingerprint recognition module 300 may specifically include a plurality of optical fingerprint sensors; the plurality of optical fingerprint sensors may be disposed in a spliced manner in a partial area or a whole area below the flexible display screen 120, and the sensing areas of the plurality of optical fingerprint sensors together form the fingerprint detection area 301 of the optical fingerprint recognition module 300. That is, the fingerprint detection area 301 of the optical fingerprint recognition module 300 may include a plurality of sub-areas, each corresponding to a sensing area of one of the optical fingerprint sensors, so that the fingerprint detection area 301 of the optical fingerprint recognition module 300 may be extended to a main area of the lower half of the flexible display screen 120, that is, to a finger usual pressing area, so as to implement a blind press type fingerprint input operation. Alternatively, when the number of optical fingerprint sensors is sufficient, the fingerprint detection area 301 may also be extended to half or even the whole display area, thereby achieving half-screen or full-screen fingerprint detection.
Alternatively, as shown in fig. 9, the open area 201 is disposed below the fingerprint detection area 301.
Optionally, the open area 201 is disposed directly below the fingerprint detection area 301, and the center of the open area 201 and the center of the fingerprint detection area 301 are both located on the same vertical line perpendicular to the pixel array 322.
Optionally, the shape and size of the opening area 201 are the same as the shape and size of the fingerprint detection area 301, as a possible implementation, the shape and size of the fingerprint detection area 301, the opening area 201, and the pixel array 322 are the same, and the center of the fingerprint detection area 301, the center of the opening area 201, and the center of the pixel array 322 are all located on the same vertical line perpendicular to the pixel array 322.
Optionally, the shape and size of the open area 201 are different from the fingerprint detection area 301. For example, the open area is square, and the fingerprint detection area is circular.
As shown in fig. 10, the embodiment of the present application further provides an electronic device 30, where the electronic device 30 may include a flexible display screen 120 and the fingerprint recognition device 20 of the embodiment of the present application, where the fingerprint recognition device 20 is disposed below the flexible display screen 120.
The electronic device 30 may be any electronic device having a flexible display 120. When the flexible display 120 has foldability, the electronic device 30 may also be referred to as a foldable electronic device.
The foldable electronic device 30 has a plurality of folded forms and appearances, as shown in fig. 11, the first area 121 on the flexible display 120 is a bending area of the flexible display 120, and the second area 122 and the third area 123 on the flexible display 120 are non-bending areas of the flexible display 120. Fig. 11 (a) is a schematic external view of the foldable electronic device 30, where the flexible display 120 is on the surface of the electronic device when the electronic device is in a folded state. Fig. 11 (a) is a schematic view of the external appearance of the foldable electronic device 30, and the flexible display 120 is inside the electronic device when the electronic device is in the folded state.
Optionally, the fingerprint recognition device 20 is provided with a non-bending area of the flexible display screen 120, for example, a whole or partial area under the second area 122 and/or the third area 123. As shown in fig. 11 (a), the fingerprint recognition device 20 is disposed in a partial area below the third area 123. As shown in fig. 11 (b), the fingerprint recognition device 20 is disposed in a partial region below the second region 122.
It should be understood that the specific examples in the embodiments of the present application are intended only to help those skilled in the art to better understand the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application.
It is to be understood that the terminology used in the embodiments of the application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the application. For example, as used in the examples of this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Those of ordinary skill in the art will appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the elements and steps of the examples have been described above generally in terms of functionality for clarity of understanding of interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed systems and apparatuses may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or elements, or may be an electrical, mechanical, or other form of connection.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purposes of the embodiments of the present application.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (20)
1. A fingerprint identification apparatus adapted for use with an electronic device having a flexible display screen, comprising: the optical fingerprint identification device comprises a support structure and an optical fingerprint identification module;
the support structure is arranged below the flexible display screen and is used for supporting all display areas of the flexible display screen;
the support structure is provided with a plurality of light-passing small holes, and the light-passing small holes are used for transmitting fingerprint light signals returned by reflection or scattering of human fingers above the flexible display screen to the optical fingerprint identification module;
the optical fingerprint identification module is arranged below the light-transmitting holes and is used for receiving the fingerprint light signals, wherein the fingerprint light signals are used for detecting fingerprint information of the finger;
the optical fingerprint identification module comprises an optical lens assembly, the optical lens assembly comprises at least one optical lens, and the center distance of any adjacent light-passing small holes in the plurality of light-passing small holes is larger than 2lambda max Wherein lambda is max Is the maximum of the fingerprint period.
2. The apparatus of claim 1, wherein the support structure is a center of the electronic device.
3. The device of claim 1, wherein an open area is provided on the support structure, the open area having a plurality of the light passing apertures provided thereon.
4. A device according to claim 3, wherein the upper surface of the support structure is on the same plane and the lower surface of the support structure is formed with a stepped structure at the edge region of the aperture region.
5. The apparatus of any of claims 1-4, wherein the plurality of light passing apertures are configured to transmit specific angle ones of the fingerprint light signals and block non-specific angle ones of the fingerprint light signals.
6. The apparatus of claim 5, wherein the optical fingerprint recognition module comprises a plurality of pixel units for receiving the specific angle fingerprint light signal.
7. The apparatus of claim 5, wherein the specific angle fingerprint light signal is a fingerprint light signal incident perpendicular to the plurality of light passing apertures.
8. The device of claim 5, wherein the plurality of light passing apertures have a depth to diameter ratio greater than 10.
9. The device of claim 5, wherein any two adjacent light passing apertures of the plurality of light passing apertures have a center distance of less than 1/2λ min Wherein lambda is min Is the minimum of the fingerprint period.
10. The apparatus of any one of claims 1-4, wherein a field angle of each of the plurality of light-passing apertures is greater than a field angle of the optical lens assembly.
11. The device of any one of claims 1-4, wherein the plurality of light passing apertures are circular apertures or polygonal apertures of the same size.
12. The device of any one of claims 1-4, wherein the plurality of light-passing apertures are arranged at a particular regular interval.
13. The device of any one of claims 1-4, wherein the plurality of light-passing apertures are arranged in any one or more of a cross arrangement, a matrix arrangement, and a random arrangement.
14. The apparatus according to any one of claims 1-4, further comprising:
and the transparent soft adhesive layer is used for connecting the flexible display screen and the supporting structure.
15. The device of claim 14, wherein the transparent soft gel layer extends into the plurality of light passing apertures.
16. The apparatus according to any one of claims 1-4, further comprising:
And the fixing assembly is used for fixing the optical fingerprint identification module on the supporting structure.
17. The device of claim 3 or 4, wherein the aperture area is disposed below the fingerprint detection area;
the optical fingerprint identification module is specifically used for receiving the fingerprint light signal of the fingerprint detection area.
18. The device of claim 17, wherein the center of the aperture area and the center of the fingerprint detection area are both located on the same vertical line perpendicular to the optical fingerprint recognition module.
19. An electronic device, comprising: a flexible display screen is provided, which is configured to display a plurality of images,
the fingerprinting device of any one of claims 1 to 18, wherein the fingerprinting device is disposed below the flexible display screen.
20. The electronic device of claim 19, wherein the means for fingerprint recognition is disposed below a non-bending region of the flexible display screen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/079598 WO2020191601A1 (en) | 2019-03-25 | 2019-03-25 | Fingerprint recognition apparatus and electronic device |
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| CN110709860A CN110709860A (en) | 2020-01-17 |
| CN110709860B true CN110709860B (en) | 2023-12-19 |
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Families Citing this family (5)
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|---|---|---|---|---|
| KR20210118301A (en) * | 2020-03-20 | 2021-09-30 | 삼성디스플레이 주식회사 | Display device |
| CN111808544B (en) * | 2020-07-24 | 2021-11-02 | 昆山国显光电有限公司 | Optical adhesive tape and display panel |
| CN112580605B (en) * | 2020-12-31 | 2024-05-24 | 敦泰电子（深圳）有限公司 | Fingerprint image acquisition method and device, electronic equipment and storage medium |
| WO2023029057A1 (en) * | 2021-09-06 | 2023-03-09 | 京东方科技集团股份有限公司 | Flexible foldable display module and manufacturing method therefor, and flexible foldable display device |
| CN117321643A (en) * | 2022-04-26 | 2023-12-29 | 京东方科技集团股份有限公司 | Display module and display device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293236A (en) * | 2016-08-12 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of display floater and display device |
| CN106603773A (en) * | 2017-01-26 | 2017-04-26 | 广东欧珀移动通信有限公司 | Display device and mobile terminal |
| WO2017118067A1 (en) * | 2016-01-04 | 2017-07-13 | 京东方科技集团股份有限公司 | Optical-type fingerprint identification display screen and display device |
| CN107169452A (en) * | 2017-05-12 | 2017-09-15 | 广东欧珀移动通信有限公司 | Fingerprint module, display device and mobile terminal |
| CN107241468A (en) * | 2017-05-12 | 2017-10-10 | 广东欧珀移动通信有限公司 | Display device and mobile terminal |
| CN107579104A (en) * | 2017-08-31 | 2018-01-12 | 京东方科技集团股份有限公司 | A kind of flexible display panels and manufacture method with fingerprint recognition |
| CN107679523A (en) * | 2017-10-31 | 2018-02-09 | 苏州科阳光电科技有限公司 | Optical finger print module preparation method, optical finger print module and mobile terminal |
| CN108073900A (en) * | 2017-12-14 | 2018-05-25 | 京东方科技集团股份有限公司 | For the flexible display panels, display device and fingerprint identification method of fingerprint recognition |
| WO2018156477A1 (en) * | 2017-02-22 | 2018-08-30 | Synaptics Incorporated | Under display optical fingerprint sensor arrangement for mitigating moiré effects |
| EP3382514A1 (en) * | 2017-03-30 | 2018-10-03 | Lg Electronics Inc. | Electronic device with a fingerprint scan module |
| CN109032420A (en) * | 2018-08-31 | 2018-12-18 | 京东方科技集团股份有限公司 | The operating method of display device and display device |
| CN109117728A (en) * | 2018-07-11 | 2019-01-01 | 维沃移动通信有限公司 | A kind of fingerprint recognition mould group and mobile terminal |
| CN109496311A (en) * | 2018-10-26 | 2019-03-19 | 深圳市汇顶科技股份有限公司 | Shield lower biometric devices and electronic equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2682360A1 (en) * | 2006-06-16 | 2007-12-21 | Silk Displays | Matrix electronic devices using opaque substrates and fabrication method therefor |
| WO2017183910A2 (en) * | 2016-04-19 | 2017-10-26 | Samsung Electronics Co., Ltd. | Electronic device supporting fingerprint verification and method for operating the same |
| WO2017204776A1 (en) * | 2016-05-23 | 2017-11-30 | Quostagni Research Llc | Electronic device including processing circuitry for sensing images from spaced apart sub-arrays and related methods |
-
2019
- 2019-03-25 CN CN201980002481.0A patent/CN110709860B/en active Active
- 2019-03-25 WO PCT/CN2019/079598 patent/WO2020191601A1/en active Application Filing
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118067A1 (en) * | 2016-01-04 | 2017-07-13 | 京东方科技集团股份有限公司 | Optical-type fingerprint identification display screen and display device |
| CN106293236A (en) * | 2016-08-12 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of display floater and display device |
| CN106603773A (en) * | 2017-01-26 | 2017-04-26 | 广东欧珀移动通信有限公司 | Display device and mobile terminal |
| WO2018156477A1 (en) * | 2017-02-22 | 2018-08-30 | Synaptics Incorporated | Under display optical fingerprint sensor arrangement for mitigating moiré effects |
| EP3382514A1 (en) * | 2017-03-30 | 2018-10-03 | Lg Electronics Inc. | Electronic device with a fingerprint scan module |
| CN107169452A (en) * | 2017-05-12 | 2017-09-15 | 广东欧珀移动通信有限公司 | Fingerprint module, display device and mobile terminal |
| CN107241468A (en) * | 2017-05-12 | 2017-10-10 | 广东欧珀移动通信有限公司 | Display device and mobile terminal |
| CN107579104A (en) * | 2017-08-31 | 2018-01-12 | 京东方科技集团股份有限公司 | A kind of flexible display panels and manufacture method with fingerprint recognition |
| CN107679523A (en) * | 2017-10-31 | 2018-02-09 | 苏州科阳光电科技有限公司 | Optical finger print module preparation method, optical finger print module and mobile terminal |
| CN108073900A (en) * | 2017-12-14 | 2018-05-25 | 京东方科技集团股份有限公司 | For the flexible display panels, display device and fingerprint identification method of fingerprint recognition |
| CN109117728A (en) * | 2018-07-11 | 2019-01-01 | 维沃移动通信有限公司 | A kind of fingerprint recognition mould group and mobile terminal |
| CN109032420A (en) * | 2018-08-31 | 2018-12-18 | 京东方科技集团股份有限公司 | The operating method of display device and display device |
| CN109496311A (en) * | 2018-10-26 | 2019-03-19 | 深圳市汇顶科技股份有限公司 | Shield lower biometric devices and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN110709860A (en) | 2020-01-17 |
| WO2020191601A1 (en) | 2020-10-01 |
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