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WO2020087241A1 - Under-screen optical fingerprint device and handheld device having three-dimensional fingerprint anti-counterfeit sensing function - Google Patents

Under-screen optical fingerprint device and handheld device having three-dimensional fingerprint anti-counterfeit sensing function Download PDF

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Publication number
WO2020087241A1
WO2020087241A1 PCT/CN2018/112538 CN2018112538W WO2020087241A1 WO 2020087241 A1 WO2020087241 A1 WO 2020087241A1 CN 2018112538 W CN2018112538 W CN 2018112538W WO 2020087241 A1 WO2020087241 A1 WO 2020087241A1
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WO
WIPO (PCT)
Prior art keywords
optical
light
fingerprint
display panel
structured light
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Application number
PCT/CN2018/112538
Other languages
French (fr)
Chinese (zh)
Inventor
李宗德
王浩任
罗介暐
许志隆
张继宗
黄泳霖
Original Assignee
深圳市汇顶科技股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2018/112538 priority Critical patent/WO2020087241A1/en
Priority to CN201880002079.8A priority patent/CN109564626B/en
Publication of WO2020087241A1 publication Critical patent/WO2020087241A1/en

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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
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • 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
    • 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
    • G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
    • G06V40/1394—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using acquisition arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components

Definitions

  • the invention relates to an under-screen optical fingerprint device with a fingerprint anti-counterfeiting sensing function, in particular to an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeiting sensing function and a handheld device.
  • fingerprint capture was mostly based on capacitive sensing fingerprints.
  • full-screen mobile phones have become a trend.
  • under-screen fingerprints are one of the current mainstream methods.
  • the capacitive circuit sensing design can be used to distinguish between real fingers and fake fingers.
  • the current full-screen mobile phones that use optical under-screen fingerprint sensing technology use optical reflection to capture fingerprint images for fingerprint characteristics. Identification, so it is impossible to distinguish real fingers and sample fake fingers through electrical characteristics.
  • the fake finger can be used to identify the full-screen mobile phone fingerprint of the legal user, thereby stealing the full-screen mobile phone.
  • the anti-counterfeiting mechanism on the optical fingerprint of the full-screen mobile phone that currently uses the optical under-screen fingerprint sensing technology needs further improvement and innovation.
  • One of the objects of the present invention is to disclose an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeit sensing function and a handheld device to solve the above problems.
  • An embodiment of the present application discloses an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeit sensing function for sensing fingerprints of a specific object.
  • the under-screen optical fingerprint device includes: a structured light output device For projecting structured light on the specific object; and an optical sensing device including a first optical input device for receiving the structured light reflected by the specific object to obtain the fingerprint of the specific object Three-dimensional information.
  • the handheld device includes: a display screen assembly; and a structured light output device, For projecting structured light on the specific object; and an optical sensing device including a first optical input device for receiving the structured light reflected by the specific object to obtain the third dimension of the fingerprint of the specific object information.
  • the under-screen optical fingerprint device and the handheld device disclosed in the present application can further obtain the third-dimensional information of the fingerprint through the optical sensing device, eliminating the possibility of using a fake finger with a correct two-dimensional fingerprint to operate a full-screen mobile phone, and this application can indeed compensate
  • the display screen adopting the optical under-screen fingerprint sensing technology does not have anti-counterfeiting defects for distinguishing true and false fingers.
  • FIG. 1A is a schematic view of the appearance of a handheld device of an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeiting sensing function of the present application.
  • FIG. 1B is a schematic structural diagram of a first embodiment of a display screen assembly and an under-screen optical fingerprint device of the handheld device of FIG. 1A.
  • FIG. 2 is a schematic structural view of another embodiment of a structured light output device in an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeiting sensing function of the present application.
  • FIG. 3 is a schematic structural diagram of a second embodiment of a display screen assembly and an under-screen optical fingerprint device of the handheld device of FIG. 1A.
  • FIG. 4 is a schematic structural view of a third embodiment of a display screen assembly and an under-screen optical fingerprint device of the handheld device of FIG. 1A.
  • FIG. 5 is a schematic structural diagram of a fourth embodiment of the display screen assembly and the under-screen optical fingerprint device of the handheld device of FIG. 1A.
  • the first optical input device the first optical input device
  • the second optical input device is the second optical input device
  • the display screen with three-dimensional fingerprint anti-counterfeiting sensing function disclosed in this application can obtain three-dimensional information of finger fingerprints, realize the difference between true and fake fingers, and effectively improve the anti-counterfeiting security of the fingerprint under the optical screen.
  • the first embodiment of the display assembly of the handheld device 100 and the under-screen optical fingerprint device 1 of the present application includes a display assembly 10 and an optical sensing device (including a first optical The input device 20 and a second optical input device 40) and a structured light output device 30.
  • the handheld device 100 may be any handheld electronic device such as a smart phone, a personal digital assistant, a handheld computer system, or a tablet computer.
  • the display screen assembly 10 includes at least a display panel 11 and a protective cover 12; wherein the display panel 11 has a first side 11a and a second side 11b opposite to the first side 11a, the protective cover
  • the board 12 is provided on the second side 11 b of the display panel 11.
  • the display panel 11 emits visible light L1 with different wavelengths by driving to display color images.
  • the display panel 11 may be an organic electroluminescence display panel (OLED), but it is not limited thereto.
  • the first optical input device 20 is disposed on the first side 11a of the display panel 11 of the display screen assembly 10, so that the display panel 11 is located between the optical sensing device 20 and the protective cover 12; When a specific object approaches the protective cover 12 of the display screen assembly 10, the specific object reflects part of the visible light L1 emitted by the display panel 11.
  • the first optical input device 20 is used to receive light L11 (including visible light and / or invisible light) reflected by the specific object, and obtain two-dimensional information of the specific object.
  • the two-dimensional information mentioned here is a two-dimensional fingerprint image; therefore, fingerprint characteristics can be identified based on the two-dimensional fingerprint image.
  • the above structured light output device 30 is disposed in the display screen assembly 10 and projects structured light L4 to the specific object.
  • the structured light L4 is a spectrum-coded invisible light.
  • the structured light output device 30 is disposed on the first side 11a of the display panel 11 and includes a light source 31, a collimating lens 32, and an optical diffraction component 33; wherein the light source 31 is used To emit invisible light L2, such as near-infrared light (wavelength range of 800-2500nm) or infrared laser; preferably, the wavelength of the invisible light is a single wavelength.
  • the collimating lens 32 When the light source 31 emits the invisible light L2 to the collimating lens 32, since the collimating lens 32 is disposed between the light source 31 and the optical diffraction component 33, the collimating lens 32 will shape the invisible light L2 into parallel light L3, It is emitted to the optical diffraction component 33, and then the optical diffraction component 33 encodes the spectrum of the parallel light L3 and projects structured light L4 to a specific object, that is, invisible light with a specific pattern.
  • the structured light of the structured light output device 30 will be projected outwards through the display panel 11 and the protective cover plate 12. Since the structured light L4 is spectrally encoded, after passing through the display screen assembly 10 and being disturbed, its The pattern can still be maintained at a high signal-to-noise ratio (SNR).
  • SNR signal-to-noise ratio
  • another embodiment of the light output device 30 ′ with the above structure includes a light source 31, a collimating lens 32 and a light mask 34; wherein the light mask 34 is disposed above the light source 31 And a light-shielding pattern layer 341 is formed on the photomask 34.
  • the light source 31 emits invisible light L2 to the collimating lens 32
  • the collimating lens 32 since the collimating lens 32 is disposed between the light source 31 and the light setting 34, the collimating lens 32 will shape the invisible light L2 into parallel light L3 and emit to After passing through the photomask 34, the photomask 34 emits structured light L4 ′ having a pattern matching the pattern of the light-shielding pattern layer 34.
  • the collimator lens 32 and the optical diffractive component 33 of the structured light output device 30 and the collimator lens 32 and the reticle 34 of the second embodiment respectively constitute a A pattern optical component, that is, the pattern optical component is disposed between the light source and the specific object.
  • the second optical input device 40 is disposed on the first side 11 a of the display panel 11.
  • the structured light L41 is also reflected, and the second optical The input device 40 receives and performs depth calculation of the specific object to obtain third-dimensional information of the specific object; the third-dimensional information mentioned here is the third-dimensional information of the fingerprint, taking a real human finger as an example,
  • the infrared laser can penetrate into the dermis layer and reflect the texture of the dermis layer.
  • the texture of the dermis layer matches the texture of the fingerprint on the epidermal layer of the real finger; therefore, the fingerprint obtained according to the second optical input device 40
  • the third dimension of the information can calculate the depth from the fingerprint on the epidermal layer of the finger to the dermis layer, and determine that this depth may be the probability of the finger, and then serve as the basis for distinguishing the fake finger, because the fingerprint layer of the fake finger usually does not have enough depth.
  • the first optical input device 20 may be further combined to obtain the two-dimensional information of the fingerprint to obtain the three-dimensional information of the fingerprint for comprehensive judgment.
  • the second embodiment of the display screen assembly and the under-screen optical fingerprint device of the present application is substantially the same as the first embodiment.
  • the display screen assembly and the under-screen optical fingerprint device 1A also include the display screen assembly 10 1.
  • An optical sensing device including the first optical input device 20 and the structured light output device 30
  • the structured light output device 30 In this embodiment, the first optical input device 20 and the second optical input device 40 can be further integrated into a single optical sensing device, but the arrangement of FIG. 3 is not limited.
  • the third embodiment of the display screen assembly and the under-screen optical fingerprint device of the present application is substantially the same as the first embodiment.
  • the display screen assembly and the under-screen optical fingerprint device 1B also include the display screen assembly 10 1.
  • An optical sensing device including the first optical input device 20 and the structured light output device 30
  • the structured light output device 30 is disposed between the protective cover 12 and the display panel 11.
  • the fourth embodiment of the display screen assembly and the under-screen optical fingerprint device of this application is substantially the same as the second embodiment.
  • the display screen assembly and the under-screen optical fingerprint device 1C also include the display screen assembly 10 1.
  • An optical sensing device including the first optical input device 20 and the structured light output device 30
  • the structured light output device 30 is disposed between the protective cover 12 and the display panel 11.
  • the second optical input device of a display screen with a three-dimensional fingerprint anti-counterfeit sensing function disclosed in the present application can further obtain the third-dimensional information of the fingerprint, and the third-dimensional information can be used to distinguish between real and fake fingers.
  • the two-dimensional information of the fingerprint is obtained through the first optical input device, and the three-dimensional information composed of the third third information is used to distinguish between true and false fingers, which effectively improves the display of optical and off-screen fingerprint sensing technology for real and fake fingers. Resolution.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Signal Processing (AREA)
  • Image Input (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Provided is an under-screen optical fingerprint device (1) having a three-dimensional fingerprint anti-counterfeit sensing function, used for sensing a fingerprint of a specific object, said under-screen optical fingerprint device (1) comprising: a structured light output device (30), used for projecting structured light (L4) onto the specific object; and an optical sensing device, comprising a second optical input device (40), used for receiving the structured light reflected by the specific object (L41) to obtain third-dimensional information of the fingerprint of the specific object.

Description

具三维指纹防伪感测功能的屏下光学指纹装置及手持装置Under-screen optical fingerprint device and hand-held device with three-dimensional fingerprint anti-counterfeiting sensing function 技术领域Technical field
本发明涉及具指纹防伪感测功能的屏下光学指纹装置，尤其涉及一种具三维指纹防伪感测功能的屏下光学指纹装置以及手持装置。The invention relates to an under-screen optical fingerprint device with a fingerprint anti-counterfeiting sensing function, in particular to an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeiting sensing function and a handheld device.
背景技术Background technique
过去指纹撷取多以电容感测指纹为主，近几年来全屏手机成为趋势，其中光学式屏下指纹为目前的主流方法的一。In the past, fingerprint capture was mostly based on capacitive sensing fingerprints. In recent years, full-screen mobile phones have become a trend. Among them, under-screen fingerprints are one of the current mainstream methods.
过去针对假指纹防伪可透过电容式电路感测设计，来分辨真人手指以及采样假手指，但目前采用光学式屏下指纹感测技术的全屏手机，是通过光学反射撷取指纹影像进行指纹特征的鉴别，所以无法透过电气特性来分辨真人手指以及采样假手指。In the past, for the anti-counterfeiting of fake fingerprints, the capacitive circuit sensing design can be used to distinguish between real fingers and fake fingers. However, the current full-screen mobile phones that use optical under-screen fingerprint sensing technology use optical reflection to capture fingerprint images for fingerprint characteristics. Identification, so it is impossible to distinguish real fingers and sample fake fingers through electrical characteristics.
这样一来，当有心人士取得合法使用者的指纹并制作假手指，使用假手指即可通过合法使用者的全屏手机指纹鉴别，进而盗用全屏手机。In this way, when the interested person obtains the fingerprint of the legal user and makes a fake finger, the fake finger can be used to identify the full-screen mobile phone fingerprint of the legal user, thereby stealing the full-screen mobile phone.
因此，目前采用光学式屏下指纹感测技术的全屏手机在光学指纹上的防伪机制需要进一步改良及创新。Therefore, the anti-counterfeiting mechanism on the optical fingerprint of the full-screen mobile phone that currently uses the optical under-screen fingerprint sensing technology needs further improvement and innovation.
发明内容Summary of the invention
本发明的目的的一在于公开一种具三维指纹防伪感测功能的屏下光学指纹装置以及手持装置，来解决上述问题。One of the objects of the present invention is to disclose an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeit sensing function and a handheld device to solve the above problems.
本申请的一实施例公开了一种一种具三维指纹防伪感测功能的屏下光学指纹装置，用以感测一特定对象的指纹，所述屏下光学指纹 装置包括：一结构光输出装置，用以对所述特定对象投射结构光；以及一光学感测装置，包括一第一光学输入装置，用以接收所述特定对象所反射的结构光，以获得所述特定对象的指纹的第三维信息。An embodiment of the present application discloses an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeit sensing function for sensing fingerprints of a specific object. The under-screen optical fingerprint device includes: a structured light output device For projecting structured light on the specific object; and an optical sensing device including a first optical input device for receiving the structured light reflected by the specific object to obtain the fingerprint of the specific object Three-dimensional information.
本申请的另一实施例公开了一种具三维指纹防伪感测功能的手持装置，用以感测一特定对象的指纹，所述手持装置包括：一显示屏组件；以及一结构光输出装置，用以对所述特定对象投射结构光；以及一光学感测装置，包括一第一光学输入装置，用以接收所述特定对象所反射的结构光，以获得所述特定对象的指纹的第三维信息。Another embodiment of the present application discloses a handheld device with a three-dimensional fingerprint anti-counterfeiting sensing function for sensing a fingerprint of a specific object. The handheld device includes: a display screen assembly; and a structured light output device, For projecting structured light on the specific object; and an optical sensing device including a first optical input device for receiving the structured light reflected by the specific object to obtain the third dimension of the fingerprint of the specific object information.
本申请所公开的屏下光学指纹装置以及手持装置通过所述光学感测装置可进一步获得指纹的第三维信息，排除使用正确二维指纹的假手指进行全屏手机操作的机率，本申请确实能补偿采用光学式屏下指纹感测技术的显示屏不具有分辨真、假手指的防伪缺陷。The under-screen optical fingerprint device and the handheld device disclosed in the present application can further obtain the third-dimensional information of the fingerprint through the optical sensing device, eliminating the possibility of using a fake finger with a correct two-dimensional fingerprint to operate a full-screen mobile phone, and this application can indeed compensate The display screen adopting the optical under-screen fingerprint sensing technology does not have anti-counterfeiting defects for distinguishing true and false fingers.
附图说明BRIEF DESCRIPTION
图1A是本申请具三维指纹防伪感测功能的屏下光学指纹装置的手持装置的外观示意图。FIG. 1A is a schematic view of the appearance of a handheld device of an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeiting sensing function of the present application.
图1B是图1A的手持装置的显示屏组件与屏下光学指纹装置的第一实施例的结构示意图。FIG. 1B is a schematic structural diagram of a first embodiment of a display screen assembly and an under-screen optical fingerprint device of the handheld device of FIG. 1A.
图2是本申请具三维指纹防伪感测功能的屏下光学指纹装置中结构光输出装置的另一实施例的结构示意图。2 is a schematic structural view of another embodiment of a structured light output device in an under-screen optical fingerprint device with a three-dimensional fingerprint anti-counterfeiting sensing function of the present application.
图3是图1A的手持装置的显示屏组件与屏下光学指纹装置的第二实施例的结构示意图。FIG. 3 is a schematic structural diagram of a second embodiment of a display screen assembly and an under-screen optical fingerprint device of the handheld device of FIG. 1A.
图4是图1A的手持装置的显示屏组件与屏下光学指纹装置的第三实施例的结构示意图。4 is a schematic structural view of a third embodiment of a display screen assembly and an under-screen optical fingerprint device of the handheld device of FIG. 1A.
图5是图1A的手持装置的显示屏组件与屏下光学指纹装置的第四实施例的结构示意图。FIG. 5 is a schematic structural diagram of a fourth embodiment of the display screen assembly and the under-screen optical fingerprint device of the handheld device of FIG. 1A.
其中，附图标记说明如下：Among them, the reference signs are described as follows:
1、1A、1B、1C                    显示屏组件与屏下光学指纹装置1. 1A, 1B, 1C Display assembly and optical fingerprint device under the screen
10                               显示屏组件10 The display assembly of the display panel
11                               显示面板11 The display panel of the display panel
12                               保护盖板12 Protective cover plate
20                               第一光学输入装置20. The first optical input device, the first optical input device
30                               结构光输出装置30 STRUCTURAL LIGHT OUTPUT DEVICES
31、31’                         光源31, 31 ’Light source Light source
32                               准直透镜32 collimating lens
33                               光学绕射组件33 Optical Diffraction Modules Optical Optics Diffraction Modules
34                               光罩34 Photomasks Photomasks
341                              遮光图案层341 Light shading pattern layer 341
40                               第二光学输入装置40 The second optical input device is the second optical input device
L1                               可见光L1 Visible light, L1, Visible light
L2                               不可见光L2 Invisible light invisible light
L3                               平行光L3, parallel light, parallel light
L4、L4’                         结构光L4, L4 ’Structured Light
L11                              反射光L11 Reflected light
L41                              反射结构光L41 Reflective structured light Reflective structured light
具体实施方式detailed description
在说明书及的前的权利要求书当中使用了某些词汇来指称特定的组件。本领域的技术人员应可理解，制造商可能会用不同的名词来称呼同样的组件。本说明书及的前的权利要求书并不以名称的差异来作为区分组件的方式，而是以组件在功能上的差异来作为区分的基准。在通篇说明书及的前的权利要求书当中所提及的“包括”为一开放式的用语，故应解释成“包括但不限定于”。In the description and the preceding claims, certain words are used to refer to specific components. Those skilled in the art should understand that manufacturers may use different terms to refer to the same component. This specification and the preceding claims do not use differences in names as a means of distinguishing components, but differences in functions of components as a basis for distinguishing. The "including" mentioned in the preceding claims and the preceding claims is an open term, so it should be interpreted as "including but not limited to".
本申请所公开的具三维指纹防伪感测功能的显示屏可取得手指 指纹的三维信息，实现真、伪手指的区别，有效提高光学式屏下指纹防伪安全性，以下配合多个实施例及图式，详细说明本申请显示屏的技术内容。The display screen with three-dimensional fingerprint anti-counterfeiting sensing function disclosed in this application can obtain three-dimensional information of finger fingerprints, realize the difference between true and fake fingers, and effectively improve the anti-counterfeiting security of the fingerprint under the optical screen. The detailed description of the technical content of the display screen of this application.
首先请参阅图1A及图1B所示，本申请手持装置100的显示屏组件与屏下光学指纹装置1的第一实施例包括有一显示屏组件10、一光学感测装置(包括一第一光学输入装置20及一第二光学输入装置40)及一结构光输出装置30。其中，手持装置100可为例如智能型手机、个人数字助理、手持式计算机系统或平板计算机等任何手持式电子。First, please refer to FIG. 1A and FIG. 1B. The first embodiment of the display assembly of the handheld device 100 and the under-screen optical fingerprint device 1 of the present application includes a display assembly 10 and an optical sensing device (including a first optical The input device 20 and a second optical input device 40) and a structured light output device 30. The handheld device 100 may be any handheld electronic device such as a smart phone, a personal digital assistant, a handheld computer system, or a tablet computer.
上述显示屏组件10至少包含有一显示面板11及一保护盖板12；其中所述显示面板11具有一第一侧11a和相对于所述第一侧11a的一第二侧11b，所述保护盖板12是设置在所述显示面板11第二侧11b。所述显示面板11通过驱动而发出不同波长的可见光L1，以显示彩色影像。在本实施例中，所述显示面板11可以是一种有机电激发光显示面板(OLED)，但不以此为限。The display screen assembly 10 includes at least a display panel 11 and a protective cover 12; wherein the display panel 11 has a first side 11a and a second side 11b opposite to the first side 11a, the protective cover The board 12 is provided on the second side 11 b of the display panel 11. The display panel 11 emits visible light L1 with different wavelengths by driving to display color images. In this embodiment, the display panel 11 may be an organic electroluminescence display panel (OLED), but it is not limited thereto.
上述第一光学输入装置20是设置在所述显示屏组件10的显示面板11的第一侧11a，使所述显示面板11位于所述光学感测装置20和所述保护盖板12之间；当一特定对象靠近所述显示屏组件10的保护盖板12时，所述特定对象会反射所述显示面板11所发出的一部分可见光L1的光线。所述第一光学输入装置20用来接收所述特定对象所反射光L11(包括可见光及/或不可见光)，并获得所述特定对象的二维信息。在此所说的二维信息是二维的指纹影像；因此，可依据二维指纹影像进行指纹特征的鉴别。The first optical input device 20 is disposed on the first side 11a of the display panel 11 of the display screen assembly 10, so that the display panel 11 is located between the optical sensing device 20 and the protective cover 12; When a specific object approaches the protective cover 12 of the display screen assembly 10, the specific object reflects part of the visible light L1 emitted by the display panel 11. The first optical input device 20 is used to receive light L11 (including visible light and / or invisible light) reflected by the specific object, and obtain two-dimensional information of the specific object. The two-dimensional information mentioned here is a two-dimensional fingerprint image; therefore, fingerprint characteristics can be identified based on the two-dimensional fingerprint image.
上述结构光输出装置30是设置在所述显示屏组件10内，并向所述特定对象投射结构光L4，结构光L4是一种经过光谱编码的不可见光。在本实施例中，所述结构光输出装置30是设置在显示面板11的第一侧11a，并包含有一光源31、一准直透镜32及一光学绕射组件33；其中所述光源31用来发出不可见光L2，例如近红外光(光波长范围为800-2500nm)或红外线激光；较佳地，所述不可见光的波长为 单波长。当光源31将不可见光L2发射至准直透镜32，由於准直透镜32設置在光源31與光学绕射组件33之間，所述准直透镜32会将不可见光L2整形成平行光L3，并发射至所述光学绕射组件33，再通过所述光学绕射组件33将平行光L3的光谱编码后向特定對象投射出结构光L4，即具有特定图样的不可见光。在本实施例中，所述结构光输出装置30的结构光会经过显示面板11及保护盖板12向外投射，由于结构光L4经过光谱编码，在通过显示屏组件10并受到干扰下，其图样仍可维持在较高的信噪比(signal to noise ratio；SNR)。The above structured light output device 30 is disposed in the display screen assembly 10 and projects structured light L4 to the specific object. The structured light L4 is a spectrum-coded invisible light. In this embodiment, the structured light output device 30 is disposed on the first side 11a of the display panel 11 and includes a light source 31, a collimating lens 32, and an optical diffraction component 33; wherein the light source 31 is used To emit invisible light L2, such as near-infrared light (wavelength range of 800-2500nm) or infrared laser; preferably, the wavelength of the invisible light is a single wavelength. When the light source 31 emits the invisible light L2 to the collimating lens 32, since the collimating lens 32 is disposed between the light source 31 and the optical diffraction component 33, the collimating lens 32 will shape the invisible light L2 into parallel light L3, It is emitted to the optical diffraction component 33, and then the optical diffraction component 33 encodes the spectrum of the parallel light L3 and projects structured light L4 to a specific object, that is, invisible light with a specific pattern. In this embodiment, the structured light of the structured light output device 30 will be projected outwards through the display panel 11 and the protective cover plate 12. Since the structured light L4 is spectrally encoded, after passing through the display screen assembly 10 and being disturbed, its The pattern can still be maintained at a high signal-to-noise ratio (SNR).
再请参阅图2所示，上述结构光输出装置30’的另一实施例是包含有一光源31、一准直透镜32及一光罩34；其中所述光罩34设置在所述光源31上方，且所述光罩34上形成有一遮光图案层341。当光源31将不可见光L2发射至准直透镜32，由於准直透镜32設置在光源31與光置34之間，所述准直透镜32会将不可见光L2整形成平行光L3，并发射至所述光罩34，通过所述光罩34后会对外发射具有匹配所述遮光图案层34的图案的结构光L4’。因此，在本申请的第一实施例中，所述结构光输出装置30的准直透镜32及光学绕射组件33与第二实施例的所述准直透镜32與光罩34均分別構成一种图样光学组件，即所述图样光学组件设置在所述光源和所述特定对象之间。Referring again to FIG. 2, another embodiment of the light output device 30 ′ with the above structure includes a light source 31, a collimating lens 32 and a light mask 34; wherein the light mask 34 is disposed above the light source 31 And a light-shielding pattern layer 341 is formed on the photomask 34. When the light source 31 emits invisible light L2 to the collimating lens 32, since the collimating lens 32 is disposed between the light source 31 and the light setting 34, the collimating lens 32 will shape the invisible light L2 into parallel light L3 and emit to After passing through the photomask 34, the photomask 34 emits structured light L4 ′ having a pattern matching the pattern of the light-shielding pattern layer 34. Therefore, in the first embodiment of the present application, the collimator lens 32 and the optical diffractive component 33 of the structured light output device 30 and the collimator lens 32 and the reticle 34 of the second embodiment respectively constitute a A pattern optical component, that is, the pattern optical component is disposed between the light source and the specific object.
上述第二光学输入装置40是设置在所述显示面板11的第一侧11a，当所述特定对象靠近所述显示屏1的保护盖板12，同样会反射结构光L41，而由第二光学输入装置40所接收，并进行所述特定对象的深度计算，获得所述特定对象的第三维信息；在此所说的第三维信息是指纹的第三维信息，以活人的真手指为例，使用红外线激光可深入到真皮层并反射出所述真皮层的纹路，所述真皮层的纹路与真手指表皮层上指纹的纹路相匹配；因此，依据所述第二光学输入装置40所获得指纹的第三维信息可计算出手指表皮层上指纹到真皮层的深度，并判断此深度可能为手指的机率，进而作为区别假手指依据，因为假手指的指纹层通常不具有足够深度。此外，也可进一步结合所述第一光学输入装置20获得所述指纹的二维信息，获得指纹的三维 信息，进行综合判断。The second optical input device 40 is disposed on the first side 11 a of the display panel 11. When the specific object is close to the protective cover 12 of the display screen 1, the structured light L41 is also reflected, and the second optical The input device 40 receives and performs depth calculation of the specific object to obtain third-dimensional information of the specific object; the third-dimensional information mentioned here is the third-dimensional information of the fingerprint, taking a real human finger as an example, The infrared laser can penetrate into the dermis layer and reflect the texture of the dermis layer. The texture of the dermis layer matches the texture of the fingerprint on the epidermal layer of the real finger; therefore, the fingerprint obtained according to the second optical input device 40 The third dimension of the information can calculate the depth from the fingerprint on the epidermal layer of the finger to the dermis layer, and determine that this depth may be the probability of the finger, and then serve as the basis for distinguishing the fake finger, because the fingerprint layer of the fake finger usually does not have enough depth. In addition, the first optical input device 20 may be further combined to obtain the two-dimensional information of the fingerprint to obtain the three-dimensional information of the fingerprint for comprehensive judgment.
请参阅图3所示，本申请显示屏组件与屏下光学指纹装置的第二实施例，其与第一实施例大致相同，显示屏组件与屏下光学指纹装置1A同样包括有显示屏组件10、一光学感测装置(包括第一光学输入装置20及结构光输出装置30)及结构光输出装置30。在本实施例中，所述第一光学输入装置20及所述第二光学输入装置40可进一步整合成单一光学感测装置，但不限制图3的排列方式。As shown in FIG. 3, the second embodiment of the display screen assembly and the under-screen optical fingerprint device of the present application is substantially the same as the first embodiment. The display screen assembly and the under-screen optical fingerprint device 1A also include the display screen assembly 10 1. An optical sensing device (including the first optical input device 20 and the structured light output device 30) and the structured light output device 30. In this embodiment, the first optical input device 20 and the second optical input device 40 can be further integrated into a single optical sensing device, but the arrangement of FIG. 3 is not limited.
请参阅图4所示，本申请显示屏组件与屏下光学指纹装置的第三实施例，其与第一实施例大致相同，显示屏组件与屏下光学指纹装置1B同样包括有显示屏组件10、一光学感测装置(包括第一光学输入装置20及结构光输出装置30)及结构光输出装置30。在本实施例中，所述结构光输出装置30是设置在所述保护盖板12与所述显示面板11的中间。As shown in FIG. 4, the third embodiment of the display screen assembly and the under-screen optical fingerprint device of the present application is substantially the same as the first embodiment. The display screen assembly and the under-screen optical fingerprint device 1B also include the display screen assembly 10 1. An optical sensing device (including the first optical input device 20 and the structured light output device 30) and the structured light output device 30. In this embodiment, the structured light output device 30 is disposed between the protective cover 12 and the display panel 11.
请参阅图5所示，本申请显示屏组件与屏下光学指纹装置的第四实施例，其与第二实施例大致相同，显示屏组件与屏下光学指纹装置1C同样包括有显示屏组件10、一光学感测装置(包括第一光学输入装置20及结构光输出装置30)及结构光输出装置30。在本实施例中，所述结构光输出装置30是设置在所述保护盖板12与所述显示面板11中间。As shown in FIG. 5, the fourth embodiment of the display screen assembly and the under-screen optical fingerprint device of this application is substantially the same as the second embodiment. The display screen assembly and the under-screen optical fingerprint device 1C also include the display screen assembly 10 1. An optical sensing device (including the first optical input device 20 and the structured light output device 30) and the structured light output device 30. In this embodiment, the structured light output device 30 is disposed between the protective cover 12 and the display panel 11.
综上所述，本申请公开的一种具三维指纹防伪感测功能的显示屏所述第二光学输入装置可进一步获得指纹的第三维信息，由第三维信息来区别真、伪手指，也可以通过所述第一光学输入装置获得指纹的二维信息，配合第三维信息构成的三维信息来区别真、伪手指，有效提高用光学式屏下指纹感测技术的显示屏对真、假手指的分辨率。In summary, the second optical input device of a display screen with a three-dimensional fingerprint anti-counterfeit sensing function disclosed in the present application can further obtain the third-dimensional information of the fingerprint, and the third-dimensional information can be used to distinguish between real and fake fingers. The two-dimensional information of the fingerprint is obtained through the first optical input device, and the three-dimensional information composed of the third third information is used to distinguish between true and false fingers, which effectively improves the display of optical and off-screen fingerprint sensing technology for real and fake fingers. Resolution.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则的内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围的内。The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (20)

  1. 一种具三维指纹防伪感测功能的屏下光学指纹装置，用以感测一特定对象的指纹，其特征在于，所述屏下光学指纹装置包括：An under-screen optical fingerprint device with three-dimensional fingerprint anti-counterfeiting sensing function for sensing fingerprints of a specific object, characterized in that the under-screen optical fingerprint device includes:
    一结构光输出装置，用以对所述特定对象投射结构光；以及A structured light output device for projecting structured light to the specific object; and
    一光学感测装置，包括一第一光学输入装置，用以接收所述特定对象所反射的结构光，以获得所述特定对象的指纹的第三维信息。An optical sensing device includes a first optical input device for receiving structured light reflected by the specific object to obtain third-dimensional information of the fingerprint of the specific object.
  2. 如权利要求1所述的屏下光学指纹装置，其特征在于，所述光学感测装置另包括一第二光学输入装置，用以获得所述特定对象的指纹的二维信息。The under-screen optical fingerprint device according to claim 1, wherein the optical sensing device further comprises a second optical input device for obtaining two-dimensional information of the fingerprint of the specific object.
  3. 如权利要求1或2所述的屏下光学指纹装置，所述屏下光学指纹装置用于一显示屏组件，包括一显示面板以及一保护盖板，所述显示面板具有一第一侧和相对于所述第一侧的一第二侧，所述保护盖板设置于所述显示面板的第二侧，其特征在于，所述光学感测装置设置于所述显示面板的第一侧，使所述显示面板位于所述光学感测装置和所述保护盖板之间。The under-screen optical fingerprint device according to claim 1 or 2, which is used for a display screen assembly, including a display panel and a protective cover plate, the display panel having a first side and an opposite On a second side of the first side, the protective cover plate is disposed on the second side of the display panel, characterized in that the optical sensing device is disposed on the first side of the display panel, so that The display panel is located between the optical sensing device and the protective cover.
  4. 如权利要求3所述的屏下光学指纹装置，其特征在于，所述结构光输出装置设置在所述显示面板的第一侧，使所述显示面板位于所述结构光输出装置和所述保护盖板之间。The under-screen optical fingerprint device according to claim 3, wherein the structured light output device is provided on the first side of the display panel so that the display panel is located between the structured light output device and the protection Between covers.
  5. 如权利要求3所述的屏下光学指纹装置，其特征在于，所述结构光输出装置设置在所述显示面板的第二侧，使所述结构光输出装置位於所述保护盖板与所述显示面板之间。The under-screen optical fingerprint device according to claim 3, wherein the structured light output device is disposed on the second side of the display panel, so that the structured light output device is located between the protective cover and the Between display panels.
  6. 如权利要求1所述的屏下光学指纹装置，其特征在于，所述结构光输出装置包括：The under-screen optical fingerprint device according to claim 1, wherein the structured light output device comprises:
    一光源，发射不可见光；以及A light source that emits invisible light; and
    一图样光学组件，设置在所述光源和所述特定对象之间，所述光源的不可见光通过所述图样光学组件，投射出一光谱编码的结构光。A pattern optical component is disposed between the light source and the specific object, and invisible light of the light source projects a spectrum-coded structured light through the pattern optical component.
  7. 如权利要求6所述的屏下光学指纹装置，其特征在于，所述图样 光学组件包括：The under-screen optical fingerprint device according to claim 6, wherein the pattern optical component comprises:
    一准直透镜，将所述光源的不可见光整形成平行光；以及A collimating lens to shape the invisible light of the light source into parallel light; and
    一光罩，包括一遮光图案层，其中所述准直透镜设置在所述光源和所述光罩之间。A photomask includes a light-shielding pattern layer, wherein the collimating lens is disposed between the light source and the photomask.
  8. 如权利要求6所述的屏下光学指纹装置，其特征在于，所述图样光学组件包括：The under-screen optical fingerprint device according to claim 6, wherein the pattern optical component comprises:
    一准直透镜，将所述光源的不可见光整形成平行光；以及A collimating lens to shape the invisible light of the light source into parallel light; and
    一光学绕射组件，将平行光转换成结构光，其中所述准直透镜设置在所述光源和所述光学绕射组件之间。An optical diffraction component converts parallel light into structured light, wherein the collimating lens is disposed between the light source and the optical diffraction component.
  9. 如权利要求6、7或8所述的屏下光学指纹装置，其特征在于，所述不可见光为近红外光。The under-screen optical fingerprint device according to claim 6, 7 or 8, wherein the invisible light is near infrared light.
  10. 如权利要求9所述的屏下光学指纹装置，其特征在于，所述不可见光的波长是单波长。The under-screen optical fingerprint device according to claim 9, wherein the wavelength of the invisible light is a single wavelength.
  11. 一种具三维指纹防伪感测功能的手持装置，用以感测一特定对象的指纹，其特征在于，所述手持装置包括：A handheld device with three-dimensional fingerprint anti-counterfeiting sensing function for sensing a fingerprint of a specific object, characterized in that the handheld device includes:
    一显示屏组件；以及A display assembly; and
    一结构光输出装置，用以对所述特定对象投射结构光；以及A structured light output device for projecting structured light to the specific object; and
    一光学感测装置，包括一第一光学输入装置，用以接收所述特定对象所反射的结构光，以获得所述特定对象的指纹的第三维信息。An optical sensing device includes a first optical input device for receiving structured light reflected by the specific object to obtain third-dimensional information of the fingerprint of the specific object.
  12. 如权利要求11所述的手持装置，其特征在于，所述光学感测装置另包括一第二光学输入装置，用以获得所述特定对象的指纹的二维信息。11. The handheld device according to claim 11, wherein the optical sensing device further includes a second optical input device for obtaining two-dimensional information of the fingerprint of the specific object.
  13. 如权利要求11或12所述的手持装置，其特征在于，所述显示屏组件包括一显示面板以及一保护盖板，所述显示面板具有一第一侧和相对于所述第一侧的一第二侧，所述保护盖板设置于所述显示面板的第二侧，且所述光学感测装置设置于所述显示面板的第一侧，使所述显示面板位于所述光学感测装置和所述保护盖板之 间。The handheld device according to claim 11 or 12, wherein the display screen assembly comprises a display panel and a protective cover, the display panel having a first side and a side opposite to the first side On the second side, the protective cover plate is disposed on the second side of the display panel, and the optical sensing device is disposed on the first side of the display panel, so that the display panel is located on the optical sensing device And the protective cover.
  14. 如权利要求13所述的手持装置，其特征在于，所述结构光输出装置设置在所述显示面板的第一侧，使所述显示面板位于所述结构光输出装置和所述保护盖板之间。13. The handheld device according to claim 13, wherein the structured light output device is disposed on the first side of the display panel so that the display panel is located between the structured light output device and the protective cover between.
  15. 如权利要求13所述的手持装置，其特征在于，所述结构光输出装置设置在所述显示面板的第二侧，使所述结构光输出装置位於所述保护盖板与所述显示面板之间。13. The handheld device according to claim 13, wherein the structured light output device is disposed on the second side of the display panel, so that the structured light output device is located between the protective cover and the display panel between.
  16. 如权利要求11所述的手持装置，其特征在于，所述结构光输出装置包括：The handheld device according to claim 11, wherein the structured light output device comprises:
    一光源，发射不可见光；以及A light source that emits invisible light; and
    一图样光学组件，设置在所述光源和所述特定对象之间，所述光源的不可见光通过所述图样光学组件，投射出一光谱编码的结构光。A pattern optical component is disposed between the light source and the specific object, and invisible light of the light source projects a spectrum-coded structured light through the pattern optical component.
  17. 如权利要求16所述的手持装置，其特征在于，所述图样光学组件包括：The handheld device according to claim 16, wherein the patterned optical component comprises:
    一准直透镜，将所述光源的不可见光整形成平行光；以及A collimating lens to shape the invisible light of the light source into parallel light; and
    一光罩，包括一遮光图案层，其中所述准直透镜设置在所述光源和所述光罩之间。A photomask includes a light-shielding pattern layer, wherein the collimating lens is disposed between the light source and the photomask.
  18. 如权利要求16所述的手持装置，其特征在于，所述图样光学组件包括：The handheld device according to claim 16, wherein the patterned optical component comprises:
    一准直透镜，将所述光源的不可见光整形成平行光；以及A collimating lens to shape the invisible light of the light source into parallel light; and
    一光学绕射组件，将平行光转换成结构光，其中所述准直透镜设置在所述光源和所述光学绕射组件之间。An optical diffraction component converts parallel light into structured light, wherein the collimating lens is disposed between the light source and the optical diffraction component.
  19. 如权利要求16、17或18所述的手持装置，其特征在于，所述不可见光为近红外光。The handheld device according to claim 16, 17 or 18, wherein the invisible light is near infrared light.
  20. 如权利要求19所述的手持装置，其特征在于，所述不可见光的波长是单波长。The handheld device according to claim 19, wherein the wavelength of the invisible light is a single wavelength.
PCT/CN2018/112538 2018-10-30 2018-10-30 Under-screen optical fingerprint device and handheld device having three-dimensional fingerprint anti-counterfeit sensing function WO2020087241A1 (en)

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