TWI772826B - Fingerprint identification device and fingerprint identification method - Google Patents

Fingerprint identification device and fingerprint identification method Download PDF

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Publication number
TWI772826B
TWI772826B TW109121049A TW109121049A TWI772826B TW I772826 B TWI772826 B TW I772826B TW 109121049 A TW109121049 A TW 109121049A TW 109121049 A TW109121049 A TW 109121049A TW I772826 B TWI772826 B TW I772826B
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fingerprint
finger
light
fingerprint image
self
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TW109121049A
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Chinese (zh)
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TW202103044A (en
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江紹陽
陳毅修
楊弘宇
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聯詠科技股份有限公司
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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
    • G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
    • G06V40/1388—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using image processing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/143—Sensing or illuminating at different wavelengths
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/56—Extraction of image or video features relating to colour
    • 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
    • G06V40/40—Spoof detection, e.g. liveness detection
    • G06V40/45—Detection of the body part being alive
    • 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
    • G06V40/1341—Sensing with light passing through the finger

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Image Input (AREA)
  • Collating Specific Patterns (AREA)

Abstract

A fingerprint identification device and a fingerprint identification method are provided. The fingerprint identification device includes a self-emitting display panel, a fingerprint sensor and a processor. The self-emitting display panel displays at least one light pattern in a sensing region. The fingerprint sensor senses a finger object located above the sensing region of the self-emitting display panel to generate a first fingerprint image and a second fingerprint image corresponding to the at least one light pattern. The processor is coupled to the fingerprint sensor. The processor determines whether the first fingerprint image and the second fingerprint image have opposite tones to identify the finger object is a real finger or a fake finger.

Description

指紋識別裝置和指紋識別方法Fingerprint identification device and fingerprint identification method

本發明是有關於一種識別技術，且尤其涉及適用於屏下指紋感測架構(under-display fingerprint sensing architecture)的指紋識別裝置和指紋識別方法。 The present invention relates to an identification technology, and more particularly, to a fingerprint identification device and a fingerprint identification method suitable for an under-display fingerprint sensing architecture.

近年來，對指紋感測的需求已逐漸增大。為減小顯示裝置的體積，指紋感測區可以與顯示裝置的顯示區交疊。舉例來說，屏下指紋識別技術是將指紋感測器配置/附接在顯示面板下(顯示面板的背表面上)，且指紋感測器可以通過顯示面板感測/捕獲指紋圖像。然而，常規屏下指紋識別技術不能夠有效地識別真指紋與假指紋(例如列印的二維圖像或僅具有平坦指紋圖案的偽手指)之間的差異。因此，本公開的以下實施例中提供了解決方案。 In recent years, the demand for fingerprint sensing has gradually increased. In order to reduce the volume of the display device, the fingerprint sensing area may overlap the display area of the display device. For example, the under-screen fingerprint recognition technology is to configure/attach a fingerprint sensor under the display panel (on the back surface of the display panel), and the fingerprint sensor can sense/capture a fingerprint image through the display panel. However, conventional under-screen fingerprint recognition technology cannot effectively identify the difference between a real fingerprint and a fake fingerprint (eg, a printed two-dimensional image or a fake finger with only a flat fingerprint pattern). Accordingly, solutions are provided in the following embodiments of the present disclosure.

本公開涉及一種指紋識別裝置和一種指紋識別方法，且所述指紋識別裝置和所述指紋識別方法能夠識別手指是真手指或 偽手指。 The present disclosure relates to a fingerprint identification device and a fingerprint identification method, and the fingerprint identification device and the fingerprint identification method can identify whether a finger is a real finger or a fingerprint identification method. Fake fingers.

本公開的指紋識別裝置包含自發光顯示面板、指紋感測器以及處理器。自發光顯示面板用以在感測區中顯示至少一個發光圖案。指紋感測器用以感測位於自發光顯示面板的感測區上方的手指，以產生對應于至少一個發光圖案的第一指紋圖像和第二指紋圖像。處理器耦接到指紋感測器。處理器用以確定第一指紋圖像和第二指紋圖像是否具有相反色調，以識別手指是真手指或偽手指。 The fingerprint identification device of the present disclosure includes a self-luminous display panel, a fingerprint sensor, and a processor. The self-luminous display panel is used for displaying at least one light-emitting pattern in the sensing area. The fingerprint sensor is used for sensing a finger located above the sensing area of the self-luminous display panel to generate a first fingerprint image and a second fingerprint image corresponding to at least one light-emitting pattern. The processor is coupled to the fingerprint sensor. The processor is configured to determine whether the first fingerprint image and the second fingerprint image have opposite tones, so as to identify whether the finger is a real finger or a fake finger.

本公開的指紋識別方法包含以下步驟：在自發光顯示面板的感測區中顯示至少一個發光圖案；通過指紋感測器來感測位於自發光顯示面板的感測區上方的手指，以產生對應于至少一個發光圖案的第一指紋圖像和第二指紋圖像；以及確定第一指紋圖像和第二指紋圖像是否具有相反色調，以識別手指是真手指或偽手指。 The fingerprint identification method of the present disclosure includes the following steps: displaying at least one light-emitting pattern in the sensing area of the self-luminous display panel; sensing a finger located above the sensing area of the self-luminous display panel by a fingerprint sensor to generate a corresponding and determining whether the first fingerprint image and the second fingerprint image have opposite hues to identify whether the finger is a real finger or a fake finger.

基於上述，本公開的指紋識別裝置和指紋識別方法可以通過從手指捕獲兩個指紋圖像並確定這兩個指紋圖像是否具有相反色調以有效地識別手指是真手指或偽手指，從而提供有效的指紋識別功能。 Based on the above, the fingerprint identification device and fingerprint identification method of the present disclosure can effectively identify whether the finger is a real finger or a fake finger by capturing two fingerprint images from a finger and determining whether the two fingerprint images have opposite hues, thereby providing effective fingerprint recognition function.

為讓本公開的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 In order to make the above-mentioned features and advantages of the present disclosure more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

100:指紋識別裝置 100: Fingerprint identification device

101:基板 101: Substrate

102:支架 102: Bracket

103:透鏡 103: Lens

110:處理器 110: Processor

120:自發光顯示面板 120: Self-luminous display panel

121:感測區 121: Sensing area

122:防護玻璃 122: Protective glass

123:像素 123: pixels

130:指紋感測器 130: Fingerprint Sensor

140:記憶體 140: memory

200:手指 200: finger

610:第一發光圖案 610: The first light-emitting pattern

611、911:第一圖案區 611, 911: The first pattern area

620:第二發光圖案 620: Second luminous pattern

621、912:第二圖案區 621, 912: The second pattern area

622:第三圖案區 622: The third pattern area

710:第一指紋圖像 710: First fingerprint image

711、721:指紋 711, 721: Fingerprint

712、722:非指紋區域 712, 722: Non-fingerprint area

720:第二指紋圖像 720: Second fingerprint image

910:特定發光圖案 910: specific luminous pattern

913:暗圖案區 913: Dark pattern area

D1:第一方向 D1: first direction

D2:第二方向 D2: Second direction

D3:第三方向 D3: third direction

I1:第一照明光 I1: The first illumination light

I2:第二照明光 I2: Second illumination light

R1:反射光 R1: Reflected light

F1:漫射光 F1: Diffuse light

S511、S512、S513、S521、S522、S523、S530、S540、S550、S560、S810、S820、S830、S840、S850、S860、S870:步驟 S511, S512, S513, S521, S522, S523, S530, S540, S550, S560, S810, S820, S830, S840, S850, S860, S870: Steps

圖1是示出根據本公開的實施例的指紋識別裝置的框圖。 FIG. 1 is a block diagram illustrating a fingerprint recognition apparatus according to an embodiment of the present disclosure.

圖2是示出根據本公開的圖1的實施例的指紋識別裝置的俯視圖。 FIG. 2 is a top view illustrating the fingerprint identification device according to the embodiment of FIG. 1 of the present disclosure.

圖3是示出根據本公開的實施例的從手指接收反射光的指紋感測器的示意圖。 3 is a schematic diagram illustrating a fingerprint sensor receiving reflected light from a finger according to an embodiment of the present disclosure.

圖4是示出根據本公開的實施例的從手指接收漫射光的指紋感測器的示意圖。 4 is a schematic diagram illustrating a fingerprint sensor receiving diffuse light from a finger according to an embodiment of the present disclosure.

圖5是根據本公開的實施例的指紋識別方法的流程圖。 FIG. 5 is a flowchart of a fingerprint identification method according to an embodiment of the present disclosure.

圖6A是示出根據本公開的實施例的第一發光圖案的示意圖。 FIG. 6A is a schematic diagram illustrating a first light emitting pattern according to an embodiment of the present disclosure.

圖6B是示出根據本公開的實施例的第二發光圖案的示意圖。 FIG. 6B is a schematic diagram illustrating a second light emitting pattern according to an embodiment of the present disclosure.

圖7A是示出根據本公開的實施例的第一指紋圖像的示意圖。 7A is a schematic diagram illustrating a first fingerprint image according to an embodiment of the present disclosure.

圖7B是示出根據本公開的實施例的第二指紋圖像的示意圖。 7B is a schematic diagram illustrating a second fingerprint image according to an embodiment of the present disclosure.

圖8是根據本公開的另一實施例的指紋識別方法的流程圖。 FIG. 8 is a flowchart of a fingerprint identification method according to another embodiment of the present disclosure.

圖9是示出根據本公開的實施例的特定發光圖案的示意圖。 FIG. 9 is a schematic diagram illustrating a specific light emitting pattern according to an embodiment of the present disclosure.

為了使本公開之內容可以被更容易明瞭，以下特舉實施例做為本公開確實能夠據以實施的範例。另外，凡可能之處，在圖式及實施方式中使用相同標號的元件/構件/步驟，係代表相同或類似部件。 In order to make the content of the present disclosure more comprehensible, the following specific embodiments are taken as examples by which the present disclosure can indeed be implemented. Additionally, where possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts.

應理解，在不脫離本公開的範圍的情況下，可以利用其 它實施例，且可以作出結構性改變。同樣，應理解，本文中所使用的措詞和術語是出於描述的目的且不應視為是限制性的。本文中使用“包含”、“包括”或“具有”以及其變型意在涵蓋其後列出的項目和其等效物以及額外項目。除非另有限制，否則本文中的術語“連接”、“耦接”和“安裝”以及其變型是廣義上使用的並且涵蓋直接和間接連接、耦接以及安裝。 It should be understood that it may be utilized without departing from the scope of the present disclosure. It is an embodiment, and structural changes can be made. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "comprising", "including" or "having" and variations thereof herein is intended to encompass the items listed thereafter and their equivalents as well as additional items. Unless otherwise limited, the terms "connected," "coupled," and "mounted" and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings.

圖1是示出根據本公開的實施例的指紋識別裝置的框圖。參考圖1，指紋識別裝置100包含處理器110、自發光顯示面板120、指紋感測器130以及記憶體140。處理器110耦接到自發光顯示面板120、指紋感測器130以及記憶體140。在本實施例中，當處理器110確定手指放置在自發光顯示面板120上時，處理器110操作自發光顯示面板120顯示至少一個發光圖案(或被稱作光斑(light spot))以便照射手指，其中至少一個發光圖案顯示在手指下方。且接著，處理器110驅動指紋感測器130感測由至少一個發光圖案照射的手指，從而產生第一指紋圖像和第二指紋圖像。在本實施例中，處理器110可以確定第一指紋圖像和第二指紋圖像是否具有相反色調(opposite tones)，以識別手指是真手指或偽手指。因此，指紋識別裝置100能夠有效地提供防偽手指功能。 FIG. 1 is a block diagram illustrating a fingerprint recognition apparatus according to an embodiment of the present disclosure. Referring to FIG. 1 , the fingerprint identification device 100 includes a processor 110 , a self-illuminating display panel 120 , a fingerprint sensor 130 and a memory 140 . The processor 110 is coupled to the self-luminous display panel 120 , the fingerprint sensor 130 and the memory 140 . In this embodiment, when the processor 110 determines that the finger is placed on the self-luminous display panel 120, the processor 110 operates the self-luminous display panel 120 to display at least one light-emitting pattern (or called a light spot) so as to illuminate the finger , where at least one light-emitting pattern is displayed under the finger. And then, the processor 110 drives the fingerprint sensor 130 to sense the finger illuminated by the at least one light-emitting pattern, thereby generating a first fingerprint image and a second fingerprint image. In this embodiment, the processor 110 may determine whether the first fingerprint image and the second fingerprint image have opposite tones, so as to identify whether the finger is a real finger or a fake finger. Therefore, the fingerprint identification device 100 can effectively provide an anti-counterfeiting finger function.

在本實施例中，處理器110可以是圖形處理單元(graphics processing unit，GPU)、圖像信號處理器(image signal processor，ISP)、中央處理單元(central processing unit，CPU)、另一可程式 設計通用或專用微處理器、數位訊號處理器(digital signal processor，DSP)、可程式設計控制器、專用積體電路(application specific integrated circuit，ASIC)、可程式設計邏輯裝置(programmable logic device，PLD)、另一類似處理器或上述處理器電路的組合。記憶體140可以是動態隨機存取記憶體(dynamic random-access memory，DRAM)、快閃記憶體或非易失性隨機存取記憶體(non-volatile random-access memory，NVRAM)等，但本公開不限於此。記憶體140可以用以存儲指紋識別程式，由指紋感測器130捕獲的圖像資料、在指紋識別程式的處理期間暫時存儲的圖像資料等，使得處理器110可以通過存取記憶體140來進行本公開的指紋識別功能。 In this embodiment, the processor 110 may be a graphics processing unit (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a central processing unit (central processing unit, CPU), another programmable Design general or special purpose microprocessors, digital signal processors (DSPs), programmable controllers, application specific integrated circuits (ASICs), programmable logic devices (PLDs) ), another similar processor, or a combination of the above processor circuits. The memory 140 may be dynamic random-access memory (DRAM), flash memory, or non-volatile random-access memory (NVRAM), etc. The disclosure is not limited to this. The memory 140 may be used to store fingerprint recognition programs, image data captured by the fingerprint sensor 130 , image data temporarily stored during processing of the fingerprint recognition programs, etc., so that the processor 110 can access the memory 140 to The fingerprint recognition function of the present disclosure is performed.

在本實施例中，自發光顯示面板120可以是有機發光二極體(organic light emitting diode，OLED)面板，但本公開不限於此。指紋感測器130可以是光學指紋感測器，且包含CMOS圖像感測器(CMOS image sensor，CIS)。指紋感測器130可以配置在自發光顯示面板120下方。在本實施例中，在指紋識別時段期間，處理器110可以驅動自發光顯示面板120顯示至少一個發光圖案以便照射手指，且指紋感測器130可以通過自發光顯示面板120感測由至少一個發光圖案照射的手指。 In this embodiment, the self-luminous display panel 120 may be an organic light emitting diode (OLED) panel, but the present disclosure is not limited thereto. The fingerprint sensor 130 may be an optical fingerprint sensor and includes a CMOS image sensor (CIS). The fingerprint sensor 130 may be disposed under the self-luminous display panel 120 . In this embodiment, during the fingerprint recognition period, the processor 110 may drive the self-luminous display panel 120 to display at least one light-emitting pattern to illuminate the finger, and the fingerprint sensor 130 may sense the light-emitting pattern by the at least one light-emitting pattern through the self-luminous display panel 120 Patterned irradiated fingers.

圖2是示出根據本公開的圖1的實施例的指紋識別裝置的俯視圖。參考圖1和圖2，指紋識別裝置100可以是行動電話，且應用屏下指紋感測架構。在本實施例中，處理器110和記憶體 140可例如是行動電話的處理電路，但本公開不限於此。在一實施例中，將處理器110、指紋感測器130以及記憶體140可以被整合到一個指紋感測晶片中。在本實施例中，自發光顯示面板120可以與沿第一方向D1和第二方向D2形成的表面和朝向第三方向D3的顯示器/觸摸表面平行。第一方向D1、第二方向D2以及第三方向D3彼此垂直。舉例來說，當手指200觸摸自發光顯示面板120的感測區121或放置在自發光顯示面板120的感測區121上時，自發光顯示面板120可以將相應觸摸資料提供到處理器110，使得處理器110可以對應地驅動指紋感測器130。將指紋感測器130配置在自發光顯示面板120的感測區121下方以對應於手指200。自發光顯示面板120可以在感測區121中顯示至少一個發光圖案以便照射手指200，且指紋感測器130可以感測手指200以在指紋識別時段期間向處理器110產生第一指紋圖像和第二指紋圖像。 FIG. 2 is a top view illustrating the fingerprint identification device according to the embodiment of FIG. 1 of the present disclosure. Referring to FIG. 1 and FIG. 2 , the fingerprint identification device 100 may be a mobile phone, and an off-screen fingerprint sensing architecture is applied. In this embodiment, the processor 110 and the memory 140 may be, for example, a processing circuit of a mobile phone, but the present disclosure is not limited thereto. In one embodiment, the processor 110, the fingerprint sensor 130 and the memory 140 may be integrated into one fingerprint sensor chip. In this embodiment, the self-luminous display panel 120 may be parallel to the surfaces formed along the first and second directions D1 and D2 and the display/touch surface facing the third direction D3. The first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other. For example, when the finger 200 touches the sensing area 121 of the self-emissive display panel 120 or is placed on the sensing area 121 of the self-emissive display panel 120, the self-emissive display panel 120 can provide corresponding touch data to the processor 110, So that the processor 110 can drive the fingerprint sensor 130 correspondingly. The fingerprint sensor 130 is disposed under the sensing area 121 of the self-luminous display panel 120 to correspond to the finger 200 . The self-luminous display panel 120 may display at least one light-emitting pattern in the sensing area 121 to illuminate the finger 200, and the fingerprint sensor 130 may sense the finger 200 to generate a first fingerprint image and a The second fingerprint image.

應注意，在本實施例中，自發光顯示面板120可以提供至少兩種不同照明光以便照射手指200。至少兩種不同照明光可以包含第一照明光和第二照明光，其中第一照明光可以由觸摸自發光顯示面板120的手指200的表面反射，且第二照明光可以穿透手指200。在本實施例中，第一照明光的第一波長短於第二照明光的第二波長。也就是說，當手指從至少一個發光圖案接收第一照明光時，指紋感測器130可以通過感測由手指提供的反射光來產生第一指紋圖像，且當手指從至少一個發光圖案接收第二照明光時，指紋感測器130可以通過感測由手指提供的漫射光來產生第 二指紋圖像。 It should be noted that in this embodiment, the self-luminous display panel 120 can provide at least two different illumination lights to illuminate the finger 200 . The at least two different illumination lights may include first illumination light and second illumination light, wherein the first illumination light may be reflected by the surface of the finger 200 touching the self-luminous display panel 120 , and the second illumination light may penetrate the finger 200 . In this embodiment, the first wavelength of the first illumination light is shorter than the second wavelength of the second illumination light. That is, when the finger receives the first illumination light from the at least one light-emitting pattern, the fingerprint sensor 130 may generate the first fingerprint image by sensing the reflected light provided by the finger, and when the finger receives the first illumination light from the at least one light-emitting pattern When the second illumination light is used, the fingerprint sensor 130 may generate a second illumination light by sensing the diffused light provided by the finger. Two fingerprint images.

圖3是示出根據本公開的實施例的從手指接收反射光的指紋感測器的示意圖。參考圖1到圖3，圖3示出本公開的第一指紋圖像的產生機制。在本實施例中，指紋感測器130配置在基板101上，且支架102也配置在基板101上以用於固持透鏡103，其中支架102可以配置成包圍指紋感測器130。透鏡103可以是聚焦透鏡，且透鏡103的光引導路徑對應於指紋感測器130以從手指200收集圖像光。防護玻璃(cover glass)122可以被配置在自發光顯示面板120上。自發光顯示面板120包含多個像素123，且像素123形成像素陣列以用於顯示功能。像素123可例如是多個OLED子像素，且像素123可以包含紅色像素、綠色像素以及藍色像素。另外，在本實施例中，自發光顯示面板120可以進一步提供觸摸功能。 3 is a schematic diagram illustrating a fingerprint sensor receiving reflected light from a finger according to an embodiment of the present disclosure. Referring to FIG. 1 to FIG. 3, FIG. 3 illustrates the generation mechanism of the first fingerprint image of the present disclosure. In this embodiment, the fingerprint sensor 130 is configured on the substrate 101 , and the bracket 102 is also configured on the substrate 101 for holding the lens 103 , wherein the bracket 102 can be configured to surround the fingerprint sensor 130 . The lens 103 may be a focusing lens, and the light guiding path of the lens 103 corresponds to the fingerprint sensor 130 to collect image light from the finger 200 . A cover glass 122 may be configured on the self-luminous display panel 120 . The self-luminous display panel 120 includes a plurality of pixels 123, and the pixels 123 form a pixel array for display functions. The pixels 123 may be, for example, a plurality of OLED sub-pixels, and the pixels 123 may include red pixels, green pixels, and blue pixels. In addition, in this embodiment, the self-luminous display panel 120 may further provide a touch function.

更具體來說，在指紋識別時段期間，當手指200觸摸防護玻璃122且位於自發光顯示面板120的感測區121上方時，自發光顯示面板120可以將觸摸的座標資料提供到處理器110。因此，處理器110根據觸摸的座標資料驅動自發光顯示面板120。自發光顯示面板120的感測區121的像素123的至少一部分可以被點亮，以在感測區121中顯示對應發光圖案，使得自發光顯示面板120的感測區121可以對應地提供第一照明光I1以便照射手指200。在一實施例中，由於具有較短波長的可見光更容易在觸摸防護玻璃122的手指200的表面上反射，因此第一照明光I1可以是 綠光或藍光，但本公開不限於此。在本實施例中，觸摸防護玻璃122的手指200的表面可以反射第一照明光I1的至少一部分，以通過透鏡103將反射光R1提供到指紋感測器130。因此，指紋感測器130可以接收具有指紋資訊的反射光R1以產生感測圖像至處理器110。 More specifically, during the fingerprint recognition period, when the finger 200 touches the cover glass 122 and is located above the sensing area 121 of the self-luminous display panel 120 , the self-luminous display panel 120 may provide the touched coordinate data to the processor 110 . Therefore, the processor 110 drives the self-luminous display panel 120 according to the touched coordinate data. At least a part of the pixels 123 of the sensing area 121 of the self-luminous display panel 120 may be lit to display a corresponding light-emitting pattern in the sensing area 121, so that the sensing area 121 of the self-luminous display panel 120 may correspondingly provide the first The illumination light I1 is irradiated to the finger 200 . In one embodiment, since visible light with a shorter wavelength is more likely to be reflected on the surface of the finger 200 touching the cover glass 122, the first illumination light I1 may be Green light or blue light, but the present disclosure is not limited thereto. In this embodiment, the surface of the finger 200 touching the cover glass 122 may reflect at least a part of the first illumination light I1 to provide the reflected light R1 to the fingerprint sensor 130 through the lens 103 . Therefore, the fingerprint sensor 130 can receive the reflected light R1 with the fingerprint information to generate a sensed image to the processor 110 .

圖4是示出根據本公開的實施例的從手指接收漫射光的指紋感測器的示意圖。相較於圖3的上述實施例，在本實施例中，在指紋識別時段期間，當手指200觸摸防護玻璃122且位於自發光顯示面板120的感測區121上方時，處理器110接收觸摸的座標資料。因此，處理器110根據觸摸的座標資料驅動自發光顯示面板120。自發光顯示面板120的感測區121的像素123的至少一部分可以被點亮，以在感測區121中顯示另一對應發光圖案，使得自發光顯示面板120的感測區121可以對應地提供第二照明光I2以便照射手指200。在一實施例中，由於具有較長波長的可見光更容易穿過觸摸防護玻璃122的手指200的表面，因此第二照明光I2可以是紅光，但本公開不限於此。在本實施例中，第二照明光I2的至少一部分可以穿過觸摸防護玻璃122的手指200，使得第二照明光I2可以在手指200內部漫射。因此，在手指200內部漫射的第二照明光I2的至少一部分可以再次穿過觸摸防護玻璃122的手指200，且可以通過透鏡103將漫射光F1引導到指紋感測器130。因此，指紋感測器130可以接收具有指紋資訊的漫射光F1以產生另一感測圖像至處理器110。 4 is a schematic diagram illustrating a fingerprint sensor receiving diffuse light from a finger according to an embodiment of the present disclosure. Compared with the above-described embodiment of FIG. 3 , in this embodiment, during the fingerprint recognition period, when the finger 200 touches the cover glass 122 and is located above the sensing area 121 of the self-luminous display panel 120 , the processor 110 receives the touch Coordinate data. Therefore, the processor 110 drives the self-luminous display panel 120 according to the touched coordinate data. At least a portion of the pixels 123 of the sensing area 121 of the self-luminous display panel 120 may be lit to display another corresponding light-emitting pattern in the sensing area 121, so that the sensing area 121 of the self-luminous display panel 120 may correspondingly provide The second illumination light I2 is to illuminate the finger 200 . In one embodiment, since visible light with a longer wavelength can more easily pass through the surface of the finger 200 touching the protective glass 122, the second illumination light I2 may be red light, but the present disclosure is not limited thereto. In this embodiment, at least a part of the second illumination light I2 may pass through the finger 200 touching the protective glass 122 , so that the second illumination light I2 may be diffused inside the finger 200 . Therefore, at least a part of the second illumination light I2 diffused inside the finger 200 may pass through the finger 200 touching the protective glass 122 again, and the diffused light F1 may be guided to the fingerprint sensor 130 through the lens 103 . Therefore, the fingerprint sensor 130 can receive the diffused light F1 with the fingerprint information to generate another sensing image to the processor 110 .

圖5是根據本公開的實施例的指紋識別方法的流程圖。參考圖1、圖2、圖5、圖6A到圖7B，在本實施例中，當手指200觸摸自發光顯示面板120且位於自發光顯示面板120的感測區121上方時，指紋識別裝置100可以執行以下步驟S511到步驟S560以顯示兩個不同的發光圖案。在步驟S511中，圖6A的第一發光圖案610顯示于自發光顯示面板120的感測區121中。圖6A是示出根據本公開的實施例的第一發光圖案的示意圖。第一發光圖案610包含第一圖案區611。第一圖案區611具有特定色彩且可以產生第一照明光。自發光顯示面板120的第一發光圖案610將第一照明光提供到手指200。在本實施例中，第一圖案區611可以是圓形形狀且朝向手指200的中心，使得第一照明光可以照射到手指200的中心，但本公開不限制第一圖案區611的形狀，也不限制第一發光圖案610的圖案形狀。在步驟S512中，指紋感測器130感測位於自發光顯示面板120的感測區上方的手指200以產生感測圖像至處理器110。在步驟S513中，處理器110預處理感測圖像以產生圖7A的第一指紋圖像710，其中處理器110可去除感測圖像的圖像雜訊(image noise)。圖7A是示出根據本公開的實施例的第一指紋圖像的示意圖。 FIG. 5 is a flowchart of a fingerprint identification method according to an embodiment of the present disclosure. Referring to FIG. 1 , FIG. 2 , FIG. 5 , and FIGS. 6A to 7B , in this embodiment, when the finger 200 touches the self-luminous display panel 120 and is located above the sensing area 121 of the self-luminous display panel 120 , the fingerprint identification device 100 The following steps S511 to S560 may be performed to display two different lighting patterns. In step S511 , the first light-emitting pattern 610 of FIG. 6A is displayed in the sensing area 121 of the self-luminous display panel 120 . FIG. 6A is a schematic diagram illustrating a first light emitting pattern according to an embodiment of the present disclosure. The first light emitting pattern 610 includes a first pattern area 611 . The first pattern area 611 has a specific color and can generate the first illumination light. The first light emitting pattern 610 of the self-luminous display panel 120 provides the first illumination light to the finger 200 . In this embodiment, the first pattern area 611 may be in a circular shape and face the center of the finger 200, so that the first illumination light may be irradiated to the center of the finger 200, but the present disclosure does not limit the shape of the first pattern area 611, nor The pattern shape of the first light emitting pattern 610 is not limited. In step S512 , the fingerprint sensor 130 senses the finger 200 located above the sensing area of the self-luminous display panel 120 to generate a sensed image to the processor 110 . In step S513, the processor 110 preprocesses the sensed image to generate the first fingerprint image 710 of FIG. 7A, wherein the processor 110 can remove image noise of the sensed image. 7A is a schematic diagram illustrating a first fingerprint image according to an embodiment of the present disclosure.

應注意，在本實施例中，第一指紋圖像是通過指紋感測器130接收由手指200提供的反射光而產生的。再次參考圖3，若手指200是真手指，則由於手指200的指紋的谷線不觸摸防護玻璃122的表面，因此第一照明光I1的至少一部分容易由防護玻璃 122的對應於手指200的指紋的谷線的位置反射。相對的，第一照明光I1的另一部分並不容易由防護玻璃122的對應於手指200的指紋的脊線的位置反射。因此，若手指200是真手指，則第一指紋圖像710的指紋711(對應於指紋的脊線)的圖像亮度比第一指紋圖像710的非指紋區域712(對應于指紋的谷線)暗。 It should be noted that, in this embodiment, the first fingerprint image is generated by the fingerprint sensor 130 receiving reflected light provided by the finger 200 . Referring again to FIG. 3 , if the finger 200 is a real finger, since the valley line of the fingerprint of the finger 200 does not touch the surface of the cover glass 122 , at least a part of the first illumination light I1 is easily illuminated by the cover glass The position reflection of 122 corresponds to the valley line of the fingerprint of finger 200 . In contrast, another part of the first illumination light I1 is not easily reflected by the position of the protective glass 122 corresponding to the ridge line of the fingerprint of the finger 200 . Therefore, if the finger 200 is a real finger, the image brightness of the fingerprint 711 (corresponding to the ridge lines of the fingerprint) of the first fingerprint image 710 is higher than that of the non-fingerprint area 712 (corresponding to the valley lines of the fingerprint) of the first fingerprint image 710 )dark.

在步驟S521中，圖6B的第二發光圖案620顯示于自發光顯示面板120的感測區中。圖6B是示出根據本公開的實施例的第二發光圖案的示意圖。第二發光圖案620包含第二圖案區621。第二圖案區621具有另一特定色彩且可以產生第二照明光。自發光顯示面板120的第二發光圖案620將第二照明光提供到手指200。在本實施例中，第二圖案區621可以是環形，以環繞較暗或未發光的第三圖案區622，使得第二照明光可以穿過手指200的邊緣，但本公開不限制第二圖案區621的形狀，也不限制第二發光圖案620的圖案形狀。在一實施例中，第一照明光的第一波長短於第二照明光的第二波長。在步驟S512中，指紋感測器130感測位於自發光顯示面板120的感測區121上方的手指200，以將另一感測圖像提供到處理器110。在步驟S523中，處理器110預處理感測圖像以產生圖7B的第二指紋圖像720，其中處理器110可去除感測圖像的圖像雜訊。圖7B是示出根據本公開的實施例的第二指紋圖像的示意圖。 In step S521 , the second light-emitting pattern 620 of FIG. 6B is displayed in the sensing area of the self-luminous display panel 120 . FIG. 6B is a schematic diagram illustrating a second light emitting pattern according to an embodiment of the present disclosure. The second light emitting pattern 620 includes a second pattern area 621 . The second pattern area 621 has another specific color and can generate the second illumination light. The second light emitting pattern 620 of the self-luminous display panel 120 provides the second illumination light to the finger 200 . In this embodiment, the second pattern area 621 may be annular to surround the darker or non-luminous third pattern area 622, so that the second illumination light can pass through the edge of the finger 200, but the present disclosure does not limit the second pattern The shape of the region 621 also does not limit the pattern shape of the second light emitting pattern 620 . In one embodiment, the first wavelength of the first illumination light is shorter than the second wavelength of the second illumination light. In step S512 , the fingerprint sensor 130 senses the finger 200 located above the sensing area 121 of the self-luminous display panel 120 to provide another sensed image to the processor 110 . In step S523, the processor 110 preprocesses the sensed image to generate the second fingerprint image 720 of FIG. 7B, wherein the processor 110 can remove image noise of the sensed image. 7B is a schematic diagram illustrating a second fingerprint image according to an embodiment of the present disclosure.

應注意，在本實施例中，第二指紋圖像是通過指紋感測器130接收由手指200提供的漫射光而產生的。再次參考圖4，若 手指200是真手指，則由於手指200的指紋的脊線觸摸防護玻璃122的表面，因此第二照明光I2和漫射光F1容易穿過防護玻璃122的對應於手指200的指紋的脊線的位置。相反，第二照明光I2並不容易穿過防護玻璃122的對應於手指200的指紋的谷線的位置。因此，若手指200是真手指，則第二指紋圖像720的指紋721(對應於指紋的脊線)的圖像亮度比第二指紋圖像720的非指紋區域722(對應于指紋的谷線)亮。更重要地，本公開不限制步驟S511到步驟S513以及步驟S521到步驟S523的執行順序。在一實施例中，處理器110首先執行步驟S511到步驟S513，且接著執行步驟S521到步驟S523。 It should be noted that, in this embodiment, the second fingerprint image is generated by the fingerprint sensor 130 receiving the diffused light provided by the finger 200 . Referring again to Figure 4, if If the finger 200 is a real finger, since the ridge line of the fingerprint of the finger 200 touches the surface of the cover glass 122, the second illumination light I2 and the diffused light F1 easily pass through the position of the cover glass 122 corresponding to the ridge line of the fingerprint of the finger 200 . On the contrary, the second illumination light I2 does not easily pass through the position of the protective glass 122 corresponding to the valley line of the fingerprint of the finger 200 . Therefore, if the finger 200 is a real finger, the image brightness of the fingerprint 721 (corresponding to the ridge lines of the fingerprint) of the second fingerprint image 720 is higher than that of the non-fingerprint region 722 (corresponding to the valley lines of the fingerprint) of the second fingerprint image 720 )Bright. More importantly, the present disclosure does not limit the execution order of steps S511 to S513 and steps S521 to S523. In one embodiment, the processor 110 first executes steps S511 to S513, and then executes steps S521 to S523.

此外，若手指200是偽手指，例如列印的二維圖像或僅是具有平坦指紋圖案的偽手指，則由於偽手指不具有三維谷線和脊線，因此指紋感測器130無法產生兩個不同的指紋圖像，例如第一指紋圖像710和第二指紋圖像720。基於第一指紋圖像710和第二指紋圖像720的上述圖像特徵，在步驟S530中，處理器110將第一指紋圖像710與第二指紋圖像720進行比較。舉例來說，處理器110可以將指紋圖像710的每一個像素的灰度值與第二指紋圖像720的每一個像素的灰度值進行比較。在步驟S540中，處理器110確定第一指紋圖像710和第二指紋圖像720是否具有相反色調。若第一指紋圖像710和第二指紋圖像720具有相反色調，則處理器110執行步驟S550以識別手指200是真手指，且連續地進行後續指紋識別操作。若第一指紋圖像710和第二指紋圖像720 不具有相反色調，則處理器110執行步驟S560以識別手指200是偽手指，並停止進行指紋識別操作。 In addition, if the finger 200 is a fake finger, such as a printed two-dimensional image or a fake finger with a flat fingerprint pattern only, the fingerprint sensor 130 cannot generate two different fingerprint images, such as a first fingerprint image 710 and a second fingerprint image 720. Based on the above-mentioned image features of the first fingerprint image 710 and the second fingerprint image 720 , in step S530 , the processor 110 compares the first fingerprint image 710 with the second fingerprint image 720 . For example, the processor 110 may compare the grayscale value of each pixel of the fingerprint image 710 with the grayscale value of each pixel of the second fingerprint image 720 . In step S540, the processor 110 determines whether the first fingerprint image 710 and the second fingerprint image 720 have opposite hues. If the first fingerprint image 710 and the second fingerprint image 720 have opposite hues, the processor 110 performs step S550 to recognize that the finger 200 is a real finger, and continuously performs subsequent fingerprint recognition operations. If the first fingerprint image 710 and the second fingerprint image 720 If there is no opposite tone, the processor 110 executes step S560 to recognize that the finger 200 is a fake finger, and stops the fingerprint recognition operation.

詳細地說，處理器110可以確定第一指紋圖像710的指紋711的色調是否與第二指紋圖像720的指紋721的色調相反，且確定第一指紋圖像710的非指紋區域712的色調是否與第二指紋圖像720的非指紋區域722的色調相反。然而，在一實施例中，處理器110可以確定第一指紋圖像710的每一個像素的灰度值與第二指紋圖像720的每一個像素的灰度值之間的差值是否大於閾值，以便識別手指200。 In detail, the processor 110 may determine whether the hue of the fingerprint 711 of the first fingerprint image 710 is opposite to that of the fingerprint 721 of the second fingerprint image 720, and determine the hue of the non-fingerprint area 712 of the first fingerprint image 710 Whether the tone is opposite to that of the non-fingerprint area 722 of the second fingerprint image 720 . However, in an embodiment, the processor 110 may determine whether the difference between the grayscale value of each pixel of the first fingerprint image 710 and the grayscale value of each pixel of the second fingerprint image 720 is greater than a threshold value , in order to identify the finger 200.

在本實施例中，指紋感測器130可以感測手指200兩次以在同一指紋識別時段期間依序捕獲第一指紋圖像710和第二指紋圖像720。另外，在一實施例中，指紋感測器130包含感測器陣列，且感測器陣列可以具有帶第一彩色濾光片(color filter)的第一感測單元和帶第二彩色濾光片的第二感測單元。僅反射光可以穿過第一彩色濾光片，且僅漫射光可以穿過第二彩色濾光片。因此，具有第一彩色濾光片的第一感測單元可以接收反射光以產生第一指紋圖像，且具有第二彩色濾光片的第二感測單元可以接收漫射光以產生第二指紋圖像。在本實施例中，第一感測單元和第二感測單元非同時進行圖像感測。 In this embodiment, the fingerprint sensor 130 may sense the finger 200 twice to sequentially capture the first fingerprint image 710 and the second fingerprint image 720 during the same fingerprint recognition period. In addition, in one embodiment, the fingerprint sensor 130 includes a sensor array, and the sensor array may have a first sensing unit with a first color filter and a second color filter the second sensing unit of the chip. Only reflected light can pass through the first color filter, and only diffuse light can pass through the second color filter. Therefore, the first sensing unit with the first color filter can receive the reflected light to generate the first fingerprint image, and the second sensing unit with the second color filter can receive the diffused light to generate the second fingerprint image. In this embodiment, the first sensing unit and the second sensing unit perform image sensing non-simultaneously.

圖8是根據本公開的另一實施例的指紋識別方法的流程圖。參考圖1、圖2、圖7A到圖9，在本實施例中，當手指200觸摸自發光顯示面板120且位於自發光顯示面板120的感測區121 上方時，指紋識別裝置100可以執行以下步驟S810到步驟S870以顯示一個發光圖案。在步驟S810中，圖9的特定發光圖案910顯示于自發光顯示面板120的感測區中。圖9是示出根據本公開的實施例的特定發光圖案的示意圖。在一實施例中，特定發光圖案910具有例如混合發光圖案，所述混合發光圖案通過將圖6A的第一發光圖案610與圖6B的第二發光圖案620混合而產生。在本實施例中，特定發光圖案910包含第一圖案區911和第二圖案區912。第一圖案區911具有特定色彩且可以產生第一照明光。第二圖案區912具有另一特定色彩且可以產生第二照明光。第二圖案區912包圍第一圖案區911，但本公開不限於此。然而，在一實施例中，特定發光圖案910可以包含佔據整個圖案的一部分的第一圖案區911和佔據整個圖案的另一部分的第二圖案區912。在本實施例中，自發光顯示面板120的特定發光圖案910能夠同時將第一照明光和第二照明光提供到手指200。 FIG. 8 is a flowchart of a fingerprint identification method according to another embodiment of the present disclosure. Referring to FIG. 1 , FIG. 2 , FIG. 7A to FIG. 9 , in this embodiment, when the finger 200 touches the self-emissive display panel 120 and is located in the sensing area 121 of the self-emissive display panel 120 When above, the fingerprint identification device 100 may perform the following steps S810 to S870 to display a light-emitting pattern. In step S810 , the specific light-emitting pattern 910 of FIG. 9 is displayed in the sensing area of the self-luminous display panel 120 . FIG. 9 is a schematic diagram illustrating a specific light emitting pattern according to an embodiment of the present disclosure. In one embodiment, the specific light emitting pattern 910 has, for example, a mixed light emitting pattern generated by mixing the first light emitting pattern 610 of FIG. 6A with the second light emitting pattern 620 of FIG. 6B . In this embodiment, the specific light-emitting pattern 910 includes a first pattern area 911 and a second pattern area 912 . The first pattern area 911 has a specific color and can generate the first illumination light. The second pattern area 912 has another specific color and can generate the second illumination light. The second pattern area 912 surrounds the first pattern area 911, but the present disclosure is not limited thereto. However, in an embodiment, a specific light emitting pattern 910 may include a first pattern region 911 occupying a part of the entire pattern and a second pattern region 912 occupying another part of the entire pattern. In this embodiment, the specific light-emitting pattern 910 of the self-luminous display panel 120 can simultaneously provide the first illumination light and the second illumination light to the finger 200 .

在本實施例中，第一圖案區911可以是圓形形狀且朝向手指200的中心，使得第一照明光可以照射到手指200的中心。第二圖案區912可以是環形，且位於第一圖案區911與暗圖案區913之間，使得第二照明光可以穿過手指200的邊緣。第二圖案區912包圍第一圖案區911。然而，本公開不限制第一圖案區911的形狀、第二圖案區912的形狀，也不限制特定發光圖案910的圖案形狀。在一實施例中，第一照明光的第一波長短於第二照明光的第二波長。在步驟S820中，指紋感測器130感測位於自發光顯 示面板120的感測區上方的手指200以將兩個感測圖像提供到處理器110。在步驟S830中，處理器110預處理兩個感測圖像以產生圖7A的第一指紋圖像710和圖7B的第二指紋圖像720，其中處理器110可去除感測圖像的圖像雜訊。相較於圖5的實施例，在本實施例中，指紋感測器130可以感測手指200一次或兩次以在同一指紋識別時段期間同時或依序捕獲第一指紋圖像710和第二指紋圖像720。 In this embodiment, the first pattern area 911 may be in a circular shape and face the center of the finger 200 , so that the first illumination light may be irradiated to the center of the finger 200 . The second pattern area 912 may be annular and located between the first pattern area 911 and the dark pattern area 913 , so that the second illumination light can pass through the edge of the finger 200 . The second pattern area 912 surrounds the first pattern area 911 . However, the present disclosure does not limit the shape of the first pattern area 911 , the shape of the second pattern area 912 , nor the pattern shape of the specific light emitting pattern 910 . In one embodiment, the first wavelength of the first illumination light is shorter than the second wavelength of the second illumination light. In step S820, the fingerprint sensor 130 senses that the The finger 200 above the sensing area of the panel 120 is displayed to provide the two sensing images to the processor 110 . In step S830, the processor 110 preprocesses the two sensing images to generate the first fingerprint image 710 of FIG. 7A and the second fingerprint image 720 of FIG. 7B, wherein the processor 110 may remove the images of the sensing images like noise. Compared to the embodiment of FIG. 5 , in this embodiment, the fingerprint sensor 130 may sense the finger 200 once or twice to capture the first fingerprint image 710 and the second fingerprint image 710 and the second fingerprint simultaneously or sequentially during the same fingerprint recognition period. Fingerprint image 720.

在步驟S840中，處理器110將第一指紋圖像710與第二指紋圖像720進行比較。在步驟S850中，處理器110確定第一指紋圖像710和第二指紋圖像720是否具有相反色調。若第一指紋圖像710和第二指紋圖像720具有相反色調，則處理器110執行步驟S860以識別手指200是真手指，且連續地進行後續指紋識別操作。若第一指紋圖像710和第二指紋圖像720不具有相反色調，則處理器110執行步驟S870以識別手指200是偽手指，並停止進行指紋識別操作。 In step S840 , the processor 110 compares the first fingerprint image 710 with the second fingerprint image 720 . In step S850, the processor 110 determines whether the first fingerprint image 710 and the second fingerprint image 720 have opposite hues. If the first fingerprint image 710 and the second fingerprint image 720 have opposite hues, the processor 110 performs step S860 to recognize that the finger 200 is a real finger, and continuously performs subsequent fingerprint recognition operations. If the first fingerprint image 710 and the second fingerprint image 720 do not have opposite hues, the processor 110 executes step S870 to recognize that the finger 200 is a fake finger, and stops the fingerprint recognition operation.

另外，在一實施例中，指紋感測器130包含感測器陣列，且感測器陣列包含帶第一彩色濾光片的第一感測單元和帶第二彩色濾光片的第二感測單元。也就是說，具有第一彩色濾光片的第一感測單元可以接收反射光以產生第一指紋圖像，且具有第二彩色濾光片的第二感測單元可以接收漫射光以產生第二指紋圖像。在本實施例中，第一感測單元和第二感測單元可以同時或非同時進行圖像感測。 In addition, in one embodiment, the fingerprint sensor 130 includes a sensor array, and the sensor array includes a first sensing unit with a first color filter and a second sensor with a second color filter measurement unit. That is, the first sensing unit with the first color filter can receive the reflected light to generate the first fingerprint image, and the second sensing unit with the second color filter can receive the diffused light to generate the first fingerprint image. Two fingerprint images. In this embodiment, the first sensing unit and the second sensing unit may perform image sensing simultaneously or non-simultaneously.

綜上所述，本公開的指紋識別裝置和指紋識別方法能夠為提供具有防偽手指效果的有效指紋識別功能。本公開的指紋識別裝置提供兩個不同的色彩照明光以便照射手指，且通過感測手指的反射光和漫射光來對應地捕獲兩個指紋圖像。因此，本公開的指紋識別裝置能夠確定兩個指紋圖像是否具有相反色調，以有效地識別手指是真手指還是偽手指。另外，應用本公開的指紋識別方法的指紋識別裝置也能夠有效地識別手指是真手指還是偽手指。 In conclusion, the fingerprint identification device and fingerprint identification method of the present disclosure can provide an effective fingerprint identification function with anti-counterfeiting finger effect. The fingerprint recognition device of the present disclosure provides two different color illumination lights to illuminate the finger, and captures two fingerprint images correspondingly by sensing the reflected light and the diffused light of the finger. Therefore, the fingerprint identification device of the present disclosure can determine whether two fingerprint images have opposite hues, so as to effectively identify whether the finger is a real finger or a fake finger. In addition, the fingerprint identification device applying the fingerprint identification method of the present disclosure can also effectively identify whether the finger is a real finger or a fake finger.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100:指紋識別裝置 100: Fingerprint identification device

110:處理器 110: Processor

120:自發光顯示面板 120: Self-luminous display panel

130:指紋感測器 130: Fingerprint Sensor

140:記憶體 140: memory

Claims (24)

一種指紋識別裝置，包括：一自發光顯示面板，用以在一感測區中顯示至少一個發光圖案；一指紋感測器，用以感測位於所述自發光顯示面板的所述感測區上方的一手指，以產生對應於所述至少一個發光圖案的一第一指紋圖像和一第二指紋圖像；以及一處理器，耦接到所述指紋感測器，且用以確定所述第一指紋圖像和所述第二指紋圖像是否具有相反色調，以識別所述手指是真手指或偽手指，其中，所述處理器藉由確定所述第一指紋圖像中每個像素的灰度值與所述第二指紋圖像中每個對應像素的灰度值之間的差值是否大於一閾值來確定所述第一指紋圖像與所述第二指紋圖像是否具有相反色調。 A fingerprint identification device, comprising: a self-luminous display panel for displaying at least one light-emitting pattern in a sensing area; a fingerprint sensor for sensing the sensing area in the self-luminous display panel an upper finger to generate a first fingerprint image and a second fingerprint image corresponding to the at least one light-emitting pattern; and a processor coupled to the fingerprint sensor for determining the whether the first fingerprint image and the second fingerprint image have opposite hues to identify whether the finger is a real finger or a fake finger, wherein the processor determines whether each of the first fingerprint images is Whether the difference between the gray value of the pixel and the gray value of each corresponding pixel in the second fingerprint image is greater than a threshold to determine whether the first fingerprint image and the second fingerprint image have Opposite shades. 如請求項1所述的指紋識別裝置，其中當所述手指從所述至少一個發光圖案接收一第一照明光時，所述指紋感測器通過感測由所述手指提供的一反射光來產生所述第一指紋圖像，且當所述手指從所述至少一個發光圖案接收一第二照明光時，所述指紋感測器通過感測由所述手指提供的一漫射光來產生所述第二指紋圖像。 The fingerprint identification device of claim 1, wherein when the finger receives a first illumination light from the at least one light-emitting pattern, the fingerprint sensor detects a reflected light provided by the finger The first fingerprint image is generated, and when the finger receives a second illumination light from the at least one light-emitting pattern, the fingerprint sensor generates the result by sensing a diffused light provided by the finger the second fingerprint image. 如請求項2所述的指紋識別裝置，其中當所述手指放置在所述自發光顯示面板的所述感測區上時，所述自發光顯示面板依序顯示一第一發光圖案和一第二發光圖案，其中所述自發光顯示面板的所述第一發光圖案將所述第一照明光提供到所述手指，使得所述手指根據所述第一照明光將所述反射光提供到所述指紋感測器，其中所述自發光顯示面板的所述第二發光圖案將所述第二照明光提供到所述手指，使得所述手指根據所述第二照明光將所述漫射光提供到所述指紋感測器。 The fingerprint identification device according to claim 2, wherein when the finger is placed on the sensing area of the self-luminous display panel, the self-luminous display panel sequentially displays a first light-emitting pattern and a first light-emitting pattern Two light-emitting patterns, wherein the first light-emitting pattern of the self-luminous display panel provides the first illumination light to the finger, so that the finger provides the reflected light to the finger according to the first illumination light the fingerprint sensor, wherein the second light-emitting pattern of the self-luminous display panel provides the second illumination light to the finger, so that the finger provides the diffused light according to the second illumination light to the fingerprint sensor. 如請求項2所述的指紋識別裝置，其中當所述手指放置在所述自發光顯示面板的所述感測區上時，所述自發光顯示面板顯示具有一第一圖案區和一第二圖案區的一個發光圖案，其中所述自發光顯示面板的所述第一圖案區將所述第一照明光提供到所述手指，使得所述手指根據所述第一照明光將所述反射光提供到所述指紋感測器，其中所述自發光顯示面板的所述第二圖案區將所述第二照明光提供到所述手指，使得所述手指根據所述第二照明光將所述漫射光提供到所述指紋感測器。 The fingerprint identification device according to claim 2, wherein when the finger is placed on the sensing area of the self-luminous display panel, the self-luminous display panel displays a first pattern area and a second pattern area A light-emitting pattern of a pattern area, wherein the first pattern area of the self-luminous display panel provides the first illumination light to the finger, so that the finger transmits the reflected light according to the first illumination light provided to the fingerprint sensor, wherein the second pattern area of the self-luminous display panel provides the second illumination light to the finger so that the finger illuminates the finger according to the second illumination light Diffuse light is provided to the fingerprint sensor. 如請求項4所述的指紋識別裝置，其中所述第二圖案區包圍所述第一圖案區。 The fingerprint identification device of claim 4, wherein the second pattern area surrounds the first pattern area. 如請求項4所述的指紋識別裝置，其中所述指紋感測器的不同感測單元同時感測所述反射光和所述漫射光，以產生所述第一指紋圖像和所述第二指紋圖像。 The fingerprint identification device of claim 4, wherein different sensing units of the fingerprint sensor simultaneously sense the reflected light and the diffused light to generate the first fingerprint image and the second fingerprint image Fingerprint image. 如請求項4所述的指紋識別裝置，其中所述指紋感測器非同時感測所述反射光和所述漫射光，以產生所述第一指紋圖像和所述第二指紋圖像。 The fingerprint identification device of claim 4, wherein the fingerprint sensor senses the reflected light and the diffused light non-simultaneously to generate the first fingerprint image and the second fingerprint image. 如請求項2所述的指紋識別裝置，其中所述第一照明光的一第一波長短於所述第二照明光的一第二波長。 The fingerprint identification device of claim 2, wherein a first wavelength of the first illumination light is shorter than a second wavelength of the second illumination light. 如請求項2所述的指紋識別裝置，其中所述指紋感測器包括一感測器陣列，且所述感測器陣列包括具有一第一彩色濾光片的一第一感測單元和具有一第二彩色濾光片的一第二感測單元，其中具有所述第一彩色濾光片的所述第一感測單元用以接收所述反射光以產生所述第一指紋圖像，且具有所述第二彩色濾光片的所述第二感測單元用以接收所述漫射光以產生所述第二指紋圖像。 The fingerprint identification device of claim 2, wherein the fingerprint sensor includes a sensor array, and the sensor array includes a first sensing unit having a first color filter and a a second sensing unit with a second color filter, wherein the first sensing unit with the first color filter is used to receive the reflected light to generate the first fingerprint image, And the second sensing unit with the second color filter is used to receive the diffused light to generate the second fingerprint image. 如請求項2所述的指紋識別裝置，更包括：一透鏡，配置於所述自發光顯示面板與所述指紋感測器之間，其中所述指紋感測器通過所述透鏡來接收由所述手指提供的所述反射光和所述漫射光。 The fingerprint identification device according to claim 2, further comprising: a lens, disposed between the self-luminous display panel and the fingerprint sensor, wherein the fingerprint sensor receives information from the fingerprint sensor through the lens. the reflected light and the diffused light provided by the finger. 如請求項1所述的指紋識別裝置，其中當所述處理器根據一圖像亮度確定所述第一指紋圖像和所述第二指紋圖像 具有相反色調時，所述處理器識別所述手指為所述真手指，且當所述處理器根據所述圖像亮度確定所述第一指紋圖像和所述第二指紋圖像不具有相反色調時，所述處理器識別所述手指為所述偽手指。 The fingerprint identification device of claim 1, wherein when the processor determines the first fingerprint image and the second fingerprint image according to an image brightness When having opposite hues, the processor identifies the finger as the real finger, and when the processor determines from the image brightness that the first fingerprint image and the second fingerprint image do not have opposite hues. When the color tone is changed, the processor identifies the finger as the pseudo-finger. 如請求項1所述的指紋識別裝置，其中所述自發光顯示面為一有機發光二極體面板。 The fingerprint identification device according to claim 1, wherein the self-luminous display surface is an organic light emitting diode panel. 一種指紋識別方法，包括：在一自發光顯示面板的一感測區中顯示至少一個發光圖案；通過一指紋感測器來感測位於所述自發光顯示面板的所述感測區上方的一手指，以產生對應於所述至少一個發光圖案的一第一指紋圖像和一第二指紋圖像；以及確定所述第一指紋圖像和所述第二指紋圖像是否具有相反色調，以識別所述手指是真手指或偽手指，其中，藉由確定所述第一指紋圖像中每個像素的灰度值與所述第二指紋圖像中每個對應像素的灰度值之間的差值是否大於一閾值來確定所述第一指紋圖像與所述第二指紋圖像是否具有相反色調。 A fingerprint identification method, comprising: displaying at least one light-emitting pattern in a sensing area of a self-luminous display panel; sensing a fingerprint sensor located above the sensing area of the self-luminous display panel finger to generate a first fingerprint image and a second fingerprint image corresponding to the at least one light-emitting pattern; and determining whether the first fingerprint image and the second fingerprint image have opposite hues, to Identifying whether the finger is a real finger or a fake finger, by determining the difference between the gray value of each pixel in the first fingerprint image and the gray value of each corresponding pixel in the second fingerprint image It is determined whether the first fingerprint image and the second fingerprint image have opposite hues whether the difference value of the first fingerprint image and the second fingerprint image is greater than a threshold value. 如請求項13所述的指紋識別方法，其中產生所述第一指紋圖像和所述第二指紋圖像的步驟包括：當所述手指從所述至少一個發光圖案接收一第一照明光時，所述指紋感測器通過感測由所述手指提供的一反射光來產生所述第一指紋圖像；以及 當所述手指從所述至少一個發光圖案接收一第二照明光時，通過利用所述指紋感測器感測由所述手指提供的一漫射光來產生所述第二指紋圖像。 The fingerprint identification method of claim 13, wherein the step of generating the first fingerprint image and the second fingerprint image comprises: when the finger receives a first illumination light from the at least one light-emitting pattern , the fingerprint sensor generates the first fingerprint image by sensing a reflected light provided by the finger; and The second fingerprint image is generated by sensing a diffused light provided by the finger with the fingerprint sensor when the finger receives a second illumination light from the at least one light-emitting pattern. 如請求項14所述的指紋識別方法，其中在所述自發光顯示面板的所述感測區中顯示至少一個發光圖案的步驟包括：當所述手指放置在所述自發光顯示面板的所述感測區上時，通過所述自發光顯示面板來依序顯示一第一發光圖案和一第二發光圖案，其中所述自發光顯示面板的所述第一發光圖案將所述第一照明光提供到所述手指，使得所述手指根據所述第一照明光將所述反射光提供到所述指紋感測器，其中所述自發光顯示面板的所述第二發光圖案將所述第二照明光提供到所述手指，使得所述手指根據所述第二照明光將所述漫射光提供到所述指紋感測器。 The fingerprint identification method according to claim 14, wherein the step of displaying at least one light-emitting pattern in the sensing area of the self-luminous display panel comprises: when the finger is placed on the self-luminous display panel When on the sensing area, a first light-emitting pattern and a second light-emitting pattern are sequentially displayed through the self-luminous display panel, wherein the first light-emitting pattern of the self-luminous display panel illuminates the first illumination light provided to the finger such that the finger provides the reflected light to the fingerprint sensor according to the first illumination light, wherein the second light-emitting pattern of the self-luminous display panel illuminates the second Illumination light is provided to the finger so that the finger provides the diffused light to the fingerprint sensor according to the second illumination light. 如請求項14所述的指紋識別方法，其中在所述自發光顯示面板的所述感測區中顯示至少一個發光圖案的所述步驟包括：當所述手指放置在所述自發光顯示面板的所述感測區上時，通過所述自發光顯示面板來顯示具有一第一圖案區和一第二圖案區的一個發光圖案，其中所述自發光顯示面板的所述第一圖案區將所述第一照明光提供到所述手指，使得所述手指根據所述第一照明光將所述反 射光提供到所述指紋感測器，其中所述自發光顯示面板的所述第二圖案區將所述第二照明光提供到所述手指，使得所述手指根據所述第二照明光將所述漫射光提供到所述指紋感測器。 The fingerprint identification method according to claim 14, wherein the step of displaying at least one light-emitting pattern in the sensing area of the self-luminous display panel comprises: when the finger is placed on the self-luminous display panel When on the sensing area, a light-emitting pattern having a first pattern area and a second pattern area is displayed by the self-luminous display panel, wherein the first pattern area of the self-luminous display panel displays all the light-emitting patterns. The first illumination light is provided to the finger, so that the finger illuminates the anti-reflection light according to the first illumination light. The incident light is provided to the fingerprint sensor, wherein the second pattern area of the self-luminous display panel provides the second illumination light to the finger, so that the finger illuminates the finger according to the second illumination light. The diffused light is provided to the fingerprint sensor. 如請求項16所述的指紋識別方法，其中所述第二圖案區包圍所述第一圖案區。 The fingerprint identification method of claim 16, wherein the second pattern area surrounds the first pattern area. 如請求項16所述的指紋識別方法，其中所述指紋感測器的不同感測單元同時感測所述反射光和所述漫射光，以產生所述第一指紋圖像和所述第二指紋圖像。 The fingerprint identification method of claim 16, wherein different sensing units of the fingerprint sensor sense the reflected light and the diffused light simultaneously to generate the first fingerprint image and the second fingerprint image Fingerprint image. 如請求項16所述的指紋識別方法，其中所述指紋感測器非同時感測所述反射光和所述漫射光，以產生所述第一指紋圖像和所述第二指紋圖像。 The fingerprint identification method of claim 16, wherein the fingerprint sensor senses the reflected light and the diffused light non-simultaneously to generate the first fingerprint image and the second fingerprint image. 如請求項14所述的指紋識別方法，其中所述第一照明光的一第一波長短於所述第二照明光的一第二波長。 The fingerprint identification method of claim 14, wherein a first wavelength of the first illumination light is shorter than a second wavelength of the second illumination light. 如請求項14所述的指紋識別方法，其中所述指紋感測器包括一感測器陣列，且所述感測器陣列包括具有一第一彩色濾光片的一第一感測單元和具有一第二彩色濾光片的一第二感測單元，其中具有所述第一彩色濾光片的所述第一感測單元用以接收所述反射光以產生所述第一指紋圖像，且具有所述第二彩色濾光片的所述第二感測單元用以接收所述漫射光以產生所述第二指紋圖像。 The fingerprint identification method of claim 14, wherein the fingerprint sensor comprises a sensor array, and the sensor array comprises a first sensing unit having a first color filter and a a second sensing unit with a second color filter, wherein the first sensing unit with the first color filter is used to receive the reflected light to generate the first fingerprint image, And the second sensing unit with the second color filter is used to receive the diffused light to generate the second fingerprint image. 如請求項14所述的指紋識別方法，其中一透鏡配置於所述自發光顯示面板與所述指紋感測器之間，使得所述指紋感測器通過所述透鏡接收由所述手指提供的所述反射光和所述漫射光。 The fingerprint identification method according to claim 14, wherein a lens is disposed between the self-luminous display panel and the fingerprint sensor, so that the fingerprint sensor receives the fingerprint provided by the finger through the lens the reflected light and the diffused light. 如請求項13所述的指紋識別方法，其中確定所述第一指紋圖像和所述第二指紋圖像是否具有所述相反色調，以識別所述手指為所述真手指或所述偽手指的步驟包括：根據一圖像亮度確定所述第一指紋圖像和所述第二指紋圖像是否具有相反色調；當所述第一指紋圖像和所述第二指紋圖像具有相反色調時，識別所述手指為所述真手指；以及當所述第一指紋圖像和所述第二指紋圖像不具有相反色調時，識別所述手指為所述偽手指。 The fingerprint identification method of claim 13, wherein it is determined whether the first fingerprint image and the second fingerprint image have the opposite hue to identify the finger as the real finger or the fake finger The steps include: determining whether the first fingerprint image and the second fingerprint image have opposite hues according to an image brightness; when the first fingerprint image and the second fingerprint image have opposite hues , identifying the finger as the real finger; and identifying the finger as the fake finger when the first fingerprint image and the second fingerprint image do not have opposite hues. 如請求項13所述的指紋識別方法，其中所述自發光顯示面板為一有機發光二極體面板。 The fingerprint identification method according to claim 13, wherein the self-luminous display panel is an organic light emitting diode panel.
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