WO2021227327A1 - 具指纹感测功能的电子装置及指纹感测方法 - Google Patents

具指纹感测功能的电子装置及指纹感测方法 Download PDF

Info

Publication number
WO2021227327A1
WO2021227327A1 PCT/CN2020/115865 CN2020115865W WO2021227327A1 WO 2021227327 A1 WO2021227327 A1 WO 2021227327A1 CN 2020115865 W CN2020115865 W CN 2020115865W WO 2021227327 A1 WO2021227327 A1 WO 2021227327A1
Authority
WO
WIPO (PCT)
Prior art keywords
fingerprint
fingerprint image
finger
image
sensing
Prior art date
Application number
PCT/CN2020/115865
Other languages
English (en)
French (fr)
Inventor
杨昌伟
Original Assignee
神盾股份有限公司
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 神盾股份有限公司 filed Critical 神盾股份有限公司
Priority to KR1020227026782A priority Critical patent/KR20220116065A/ko
Publication of WO2021227327A1 publication Critical patent/WO2021227327A1/zh

Links

Images

Classifications

    • 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics
    • 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
    • G06V10/141—Control of illumination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/98—Detection or correction of errors, e.g. by rescanning the pattern or by human intervention; Evaluation of the quality of the acquired patterns
    • 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

Definitions

  • the invention relates to an electronic device with a sensing function and a sensing method, in particular to an electronic device with a fingerprint sensing function and a fingerprint sensing method.
  • the sensing module sensor disposed under the display panel reads the fingerprint of the finger pressed on the display panel for fingerprint identification.
  • the low light transmittance of the display panel only about 1% to 3% of light can penetrate the display panel. Therefore, the light signal from the finger and received by the sensor of the sensing module is weak, resulting in low contrast of the read fingerprint image. Fingerprint images with low contrast are more likely to cause recognition failure.
  • the present invention is directed to an electronic device with fingerprint sensing function, which can effectively improve the contrast between bright lines and dark lines in a fingerprint image.
  • the present invention is directed to a fingerprint sensing method, which can effectively improve the contrast between bright lines and dark lines in a fingerprint image.
  • An embodiment of the present invention provides an electronic device with fingerprint sensing function, including a display panel and a sensing module.
  • the display panel has a surface for the user's finger to press.
  • the sensing module is arranged under the display panel.
  • the display panel displays a bright area in the fingerprint sensing area to emit an illuminating beam to the finger, and the sensing module correspondingly obtains the first fingerprint image.
  • the display panel then displays the first fingerprint image in the fingerprint sensing area to use the first fingerprint image as a light source shape to illuminate the finger, and the sensing module correspondingly obtains the second fingerprint image.
  • An embodiment of the present invention provides a fingerprint sensing method, which includes: using a display panel to display a bright area in the fingerprint sensing area to illuminate a finger pressed on the display panel; obtaining the first fingerprint image; in the fingerprint display area Display the first fingerprint image in to illuminate the finger; and obtain the second fingerprint image.
  • the second fingerprint image is acquired
  • the fingerprint image can have a higher contrast, so that the success rate and accuracy of fingerprint recognition can be effectively improved.
  • FIG. 1 is a schematic structural diagram of an electronic device with fingerprint sensing function according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the first fingerprint image displayed in the fingerprint sensing area of the electronic device with fingerprint sensing function of FIG. 1;
  • FIG. 3 is a flowchart of a fingerprint sensing method according to an embodiment of the present invention.
  • A1 Fingerprint sensing area
  • FIG. 1 is a schematic structural diagram of an electronic device with fingerprint sensing function according to an embodiment of the present invention
  • FIG. 2 is a first fingerprint image displayed in the fingerprint sensing area of the electronic device with fingerprint sensing function of FIG. 1
  • the electronic device 100 with fingerprint sensing function of this embodiment includes a display panel 110, a sensing module 120 and a controller 130.
  • the electronic device 100 with fingerprint sensing function is, for example, a smart phone, a feature phone, a tablet computer, a notebook computer, a personal digital assistant (PDA) or other appropriate electronic devices.
  • the display panel 110 has a first surface S1 and a second surface S2 opposite to each other.
  • the first surface S1 is used for pressing by the user's finger 50.
  • the display panel 110 is, for example, an organic light-emitting diode (OLED) display panel.
  • the display panel 110 may also be a liquid crystal display panel or other suitable display panels.
  • the display panel 110 has a plurality of pixels 112 arranged in an array. The pixels 112 emit an illumination beam 111 to the finger 50, and the finger 50 reflects the illumination beam 111 into a signal beam 113, wherein the signal beam 113 carries the finger 50 Fingerprint information.
  • the sensing module 120 is disposed under the display panel 110 and used to read (for example, photograph) the fingerprint image of the finger 50.
  • the sensing module 120 may include an image sensor 122 and an imaging element 124.
  • the signal beam 113 from the finger 50 is transmitted to the image sensor 122 through the imaging element 124, and the fingerprint of the finger 50 is imaged on the image sensor 122, so that the image sensor 122 can sense the fingerprint image.
  • the imaging element 124 is, for example, an imaging lens, a collimator, a lens array, a fiber optical plate, or other suitable imaging elements 124.
  • the image sensor 122 is, for example, a complementary metal oxide semiconductor (CMOS) image sensor or a charge coupled device (CCD).
  • CMOS complementary metal oxide semiconductor
  • CCD charge coupled device
  • the controller 130 is electrically connected to the display panel 110 and the sensing module 120.
  • the controller 130 first controls the display panel 110 to display a bright area in the fingerprint sensing area A1.
  • the bright area is a uniform bright area, that is, the controller 130 first controls the pixels 112 in the fingerprint sensing area A1 to emit light with the same brightness and color
  • the uniform bright area is, for example, uniform green light. Area, uniform white light area, or uniform light area of other colors.
  • the controller 130 commands the sensing module 120 to read the signal beam 113 reflected by the finger 50 to obtain the first fingerprint image 60. Then, the controller 130 controls the display panel 110 to display the first fingerprint image 60 in the fingerprint sensing area A1 to use the first fingerprint image 60 as a light source shape to illuminate the finger 50, and the controller 130 commands the sensing module 120 again The signal beam 113 reflected by the finger 50 is read to obtain the second fingerprint image.
  • the fingerprint ridge 54 of the finger 50 will touch the first surface S1, and the fingerprint groove 52 will not touch the first surface S1, so the fingerprint ridge 54 will form bright lines in the fingerprint image, and the fingerprint groove The groove 52 will form dark lines in the fingerprint image.
  • the first fingerprint image read by the sensing module 120 and the first fingerprint image 60 displayed in the fingerprint sensing area A1 are in a one-to-one mapping relationship, and the fingerprint sensing area A1 displays The size of the first fingerprint image 60, the positions of the fingerprint groove 52 and the fingerprint ridge 54 are consistent with the finger 50.
  • the dark pattern 62 of the first fingerprint image 60 displayed in the fingerprint sensing area A1 is located under the fingerprint groove 52 of the finger 50, and the first fingerprint image displayed in the fingerprint sensing area A1
  • the bright lines 64 of the primary fingerprint image 60 are located below the fingerprint ridge 54 of the finger 50.
  • the fingerprint ridge 54 can allow the image sensor 122 to receive more reflected light and therefore be brighter to form the bright lines 64 in the first fingerprint image 60. Therefore, in this embodiment, the first fingerprint image 60 is presented in the fingerprint sensing area A1, the bright pattern 64 is used to increase the intensity of the light irradiated on the fingerprint ridges 64, and the dark pattern 62 is used to increase the light irradiated on the fingerprint groove 52. Relatively weak.
  • the contrast between the fingerprint ridge 54 and the fingerprint groove 52 is enlarged.
  • the fingerprint groove 52 will be provided with a weaker light intensity, while the fingerprint ridge 54 maintains the original high light intensity. Therefore, in the second fingerprint image, the dark lines formed by the fingerprint groove 52 will be darker. , So that the contrast between bright lines and dark lines can be effectively improved, so that the success rate and accuracy of fingerprint recognition can be effectively improved.
  • the controller 130 may directly use the second fingerprint image as the final fingerprint image to perform the subsequent fingerprint identification process. However, in another embodiment, the controller 130 can also determine whether the brightness difference between the bright lines and the dark lines of the second fingerprint image meets the preset range. Meeting the preset range may mean that the brightness difference is greater than a predetermined value, or that the brightness difference is greater than or equal to a predetermined value.
  • the difference in brightness can be represented by the difference obtained by subtracting the brightness of the dark lines from the brightness of the bright lines, or can be represented by the quotient obtained by dividing the brightness of the bright lines by the brightness of the dark lines.
  • the second fingerprint image is stored as a final fingerprint image, and the controller performs fingerprint recognition according to the second fingerprint image. On the contrary, if the brightness difference does not meet the preset range, the finger 50 is illuminated again and the fingerprint image is obtained.
  • the fingerprint of the finger 50 is read again N times to obtain the N+2th fingerprint image until the brightness of the bright and dark lines of the N+2th fingerprint image
  • the difference meets the preset range, and the N+2th fingerprint image is stored as the final fingerprint image, where the N+2th fingerprint image is the controller 130 instructs the display panel 110 to display the N+1th fingerprint in the fingerprint sensing area A1
  • the fingerprint image is the fingerprint image obtained when the illuminating beam 111 is emitted to the finger 50 for the N+2th time, and N is a positive integer.
  • a flowchart will be used to specifically illustrate the situation where the finger is photographed N times.
  • FIG. 3 is a flowchart of a fingerprint sensing method according to an embodiment of the present invention. Please refer to FIG. 1, FIG. 2 and FIG. 3.
  • the fingerprint sensing method of this embodiment can be executed by the above-mentioned electronic device 100 with fingerprint sensing function.
  • the fingerprint sensing method includes the following steps. First, step P110 is performed to display a bright area in the fingerprint sensing area A1 by using the display panel 110 to illuminate the finger 50 pressed on the display panel 110. Next, step P120 is executed to obtain the first fingerprint image, and use the first fingerprint image as the basic image. Then, step P130 is executed to control the light-emitting pixels of the display panel to display the basic image in the fingerprint display area A1 to emit the illuminating light beam 111 to the finger 50 again. After that, step P140 is executed to obtain the fingerprint image again, for example, to obtain the second fingerprint image.
  • step P140 the second fingerprint image obtained this time can be directly used as the final fingerprint image, and the subsequent fingerprint identification process can be performed.
  • step P150 can be performed to determine whether the brightness difference between the bright lines and the dark lines of the fingerprint image obtained again (for example, the fingerprint image obtained the second time) meets the preset range. If the judgment result is yes, step P160 is executed to store the re-acquired fingerprint image (for example, the second fingerprint image) as the final fingerprint image, and the subsequent fingerprint identification process is performed. If the result of the determination is negative, step P170 is executed to replace the base image with the fingerprint image that is currently acquired again (for example, the second fingerprint image).
  • step P130 performs steps P130, P140, and P150 in sequence. If the judgment result of step P150 is no, steps P170, P130, P140, and P150 are continuously executed in sequence until the judgment result of step P150 is yes, then the loop is terminated, and step P160 is executed. In this way, it can be ensured that the final fingerprint image is a fingerprint image with sufficient contrast between bright lines and dark lines.
  • Such a cycle is to read the fingerprint image of the finger 50 again N times to obtain the N+2th fingerprint image, until the brightness difference between the bright lines and the dark lines of the N+2th fingerprint image meets the preset range.
  • the controller 130 is, for example, a central processing unit (CPU), a microprocessor (microprocessor), a digital signal processor (digital signal processor, DSP), a programmable controller, and a programmable controller.
  • a logic device programmable logic device, PLD or other similar devices or a combination of these devices is not limited by the present invention.
  • each function of the controller 130 may be implemented as a plurality of program codes. These program codes are stored in a memory, and the controller 130 executes the program codes. Alternatively, in an embodiment, each function of the controller 130 may be implemented as one or more circuits. The present invention does not limit the use of software or hardware to implement the functions of the controller 130.
  • the shape is used as the first
  • the light source of the fingerprint image once again emits an illuminating light beam to the finger. Therefore, the bright lines and dark lines in the fingerprint image obtained the second time can have a higher contrast, so that the success rate and accuracy of fingerprint recognition can be effectively improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Input (AREA)

Abstract

一种具指纹感测功能的电子装置(100)，包括显示面板(110)及感测模块(120)。显示面板(110)具有表面(S1)，用以供使用者的手指(50)按压。感测模块(120)设置于显示面板(110)下方。显示面板(110)在指纹感测区(A1)显示亮区以对手指(50)发出照明光束(111)，该感测模块(120)相应取得第一次指纹图像(60)。显示面板(110)随后在指纹感测区(A1)中显示第一次指纹图像(60)，以利用该第一次指纹图像(60)作为光源形状照亮手指(50)，感测模块(120)相应取得第二次指纹图像。

Description

具指纹感测功能的电子装置及指纹感测方法 技术领域
本发明涉及一种具感测功能的电子装置及感测方法，尤其涉及一种具指纹感测功能的电子装置及指纹感测方法。
背景技术
随着可携式电子装置朝向大屏占比发展，传统配置于电子装置的正面的电容式指纹传感器便不再适用，这是因为电容式指纹传感器会占用电子装置正面过多的面积，而导致屏占比难以提升。在此趋势之下，屏下式指纹感测模块便被发展出来。
在屏下式光学式指纹感测模块中，配置于显示面板下方的感测模块传感器读取按压于显示面板上的手指的指纹，以供指纹识别用。然而，由于显示面板的透光率低，大约只有1％至3％的光能够穿透显示面板。因此，来自手指且被感测模块传感器接收的光信号是微弱的，进而导致读取到的指纹图像对比度低。对比度低的指纹图像较容易导致识别失败的情形。
发明内容
本发明是针对一种具指纹感测功能的电子装置，其可有效提升指纹图像中亮纹与暗纹的对比。
本发明是针对一种指纹感测方法，其可有效提升指纹图像中亮纹与暗纹的对比。
本发明的一实施例提出一种具指纹感测功能的电子装置，包括显示面板及感测模块。显示面板具有表面，用以供使用者的手指按压。感测模块设置于显示面板下方。显示面板在指纹感测区显示亮区以对手指发出照明光束，感测模块相应取得第一次指纹图像。显示面板随后在指纹感测区中显示第一次指纹图像，以利用第一次指纹图像作为光源形状照亮手指，感测模块相应取得第二次指纹图像。
本发明的一实施例提出一种指纹感测方法，包括：利用显示面板在指纹 感测区显示亮区，以照亮按压于显示面板上的手指；取得第一次指纹图像；在指纹显示区中显示第一次指纹图像，以照亮手指；以及取得第二次指纹图像。
在本发明的实施例的具指纹感测功能的电子装置及指纹感测方法中，由于将第一次取得的第一次指纹图像在指纹显示区中显示以照亮手指，因此第二次取得的指纹图像便可以具有较高的对比，以使指纹识别的成功率与准确率可以有效提升。
附图说明
图1为本发明的一实施例的具指纹感测功能的电子装置的结构示意图；
图2为图1的具指纹感测功能的电子装置于指纹感测区所显示的第一次指纹图像的示意图；
图3为本发明的一实施例的指纹感测方法的流程图。
附图标记说明
50:手指
52:指纹沟槽
54:指纹凸脊
60:第一次指纹图像
62:暗纹
64:亮纹
100:具指纹感测功能的电子装置
110:显示面板
111:照明光束
112:像素
113:信号光束
120:感测模块
122:图像传感器
124:成像元件
130:控制器
A1:指纹感测区
P110～P170:步骤
S1:第一表面
S2:第二表面
具体实施方式
现将详细地参考本发明的示范性实施例，示范性实施例的实例说明于附图中。只要有可能，相同元件符号在附图和描述中用来表示相同或相似部分。
图1为本发明的一实施例的具指纹感测功能的电子装置的结构示意图，而图2为图1的具指纹感测功能的电子装置于指纹感测区所显示的第一次指纹图像的示意图。请参照图1与图2，本实施例的具指纹感测功能的电子装置100包括显示面板110、感测模块120及控制器130。具指纹感测功能的电子装置100例如为智能手机、功能形手机、平板计算机、笔记本电脑、个人数字助理(personal digital assistant,PDA)或其他适当的电子装置。显示面板110具有相对的第一表面S1及第二表面S2，其中第一表面S1用以供使用者的手指50按压。在本实施例中，显示面板110例如为有机发光二极管(organic light-emitting diode,OLED)显示面板。然而，在其他实施例中，显示面板110也可以是液晶显示面板或其他适当的显示面板。在本实施例中，显示面板110具有多个排成阵列的像素112，像素112对手指50发出照明光束111，而手指50将照明光束111反射成信号光束113，其中信号光束113携带着手指50的指纹信息。
感测模块120设置于显示面板110下方，且用以读取(例如是拍摄)手指50的指纹图像。在本实施例中，感测模块120可包括图像传感器122与成像元件124。来自手指50的信号光束113通过成像元件124传递至图像传感器122，并使手指50的指纹在图像传感器122上成像，如此图像传感器122便可以感测到指纹图像。在本实施例中，成像元件124例如是成像镜头、准直器、透镜阵列、光纤光学板(fiber optical plate)或其他适当的成像元件124。图像传感器122例如为互补式金属氧化物半导体(complementary metal oxide semiconductor,CMOS)图像传感器或电荷耦合器件(charge coupled device,CCD)。
控制器130电性连接至显示面板110与感测模块120。当欲读取指纹图 像时，控制器130首先控制显示面板110在指纹感测区A1显示亮区。在本实施例中，此亮区为均匀亮区，也就是说，控制器130首先控制指纹感测区A1中的像素112都以相同亮度与颜色发光，而此均匀亮区例如为均匀绿色亮区、均匀白色亮区或其他颜色的均匀亮区。
同时，控制器130命令感测模块120读取由手指50反射的信号光束113，以获得第一次指纹图像60。接着，控制器130控制显示面板110在指纹感测区A1中显示第一次指纹图像60，以利用第一次指纹图像60作为光源形状照亮手指50，且控制器130命令感测模块120再次读取由手指50反射的信号光束113，以获得第二次指纹图像。
在操作中，手指50的指纹凸脊54会接触到第一表面S1，而指纹沟槽52不会接触到第一表面S1，所以指纹凸脊54会在指纹图像中形成亮纹，而指纹沟槽52会在指纹图像中形成暗纹。感测模块120所读取到的第一次指纹图像与指纹感测区A1中所显示的第一次指纹图像60是一对一映射(mapping)的关系，且指纹感测区A1所显示的第一次指纹图像60的大小、指纹沟槽52及指纹凸脊54的位置与手指50一致。也就是说，在本实施例中，指纹感测区A1中所显示的第一次指纹图像60的暗纹62位于手指50的指纹沟槽52下方，且指纹感测区A1中所显示的第一次指纹图像60的亮纹64位于手指50的指纹凸脊54下方。一般而言，指纹凸脊54可以让图像传感器122收到较多反射的光，因此较亮，以形成第一次指纹图像60中的亮纹64。所以，本实施例利用将第一次指纹图像60呈现在指纹感测区A1中，利用亮纹64使照射在指纹凸脊64的光强，利用暗纹62使照射在指纹沟槽52的光相对较弱。利用亮纹64与暗纹62的不同光强度，使指纹凸脊54与指纹沟槽52的对比拉大。也就是说，指纹沟槽52会被提供更弱的光强度，而指纹凸脊54则维持原本的高光强度，因此在第二次指纹图像中，指纹沟槽52所形成的暗纹会更暗，以使亮纹与暗纹的对比有效地提升，进而使指纹识别的成功率与准确率可以有效提升。
在一实施例中，控制器130可直接以第二次指纹图像作为最终指纹图像，以进行后续的指纹识别流程。然而，在另一实施例中，控制器130亦可判断第二次指纹图像的亮纹与暗纹的亮度差异是否符合预设范围。符合预设范围可以是指此亮度差异大于预定值，或者是指此亮度差异大于或等于预定值。 其中亮度差异可以用亮纹的亮度减掉暗纹的亮度所得到的差值来表现，或者也可以用亮纹的亮度除以暗纹的亮度所得到的商来表现。
若亮度差异符合预设范围，则将第二次指纹图像存储成最终指纹图像，控制器根据第二次指纹图像进行指纹识别。反之，若亮度差异不符合预设范围，则再次照亮手指50并取得指纹图像。举例而言，若亮度差异不符合预设范围，则再读取N次手指50的指纹，以取得第N+2次指纹图像，直到第N+2次指纹图像的亮纹与暗纹的亮度差异符合预设范围为止，并将第N+2次指纹图像存储成最终指纹图像，其中第N+2次指纹图像是控制器130命令显示面板110在指纹感测区A1显示第N+1次指纹图像来第N+2次对手指50发出照明光束111时所取得的指纹图像，且N为正整数。以下将会以流程图来具体说明再拍摄N次手指的情形。
图3为本发明的一实施例的指纹感测方法的流程图。请参照图1、图2及图3，本实施例的指纹感测方法可利用上述具指纹感测功能的电子装置100来执行，指纹感测方法包括下列步骤。首先，执行步骤P110，利用显示面板110在指纹感测区A1显示亮区，以照亮按压于显示面板110上的手指50。接着，执行步骤P120，取得第一次指纹图像，并将第一次指纹图像作为基础图像。然后，执行步骤P130，控制显示面板的发光像素在指纹显示区A1中显示基础图像，以再次对手指50发出照明光束111。之后，执行步骤P140，再次取得指纹图像，例如是取得第二次指纹图像。
在一实施例中，在步骤P140之后，可直接将此次获得的第二次指纹图像作为最终指纹图像，进行后续的指纹识别流程。然而，在本实施例中，在步骤P140之后，可执行步骤P150，判断再次取得的指纹图像(例如是第二次取得的指纹图像)的亮纹与暗纹的亮度差异是否符合预设范围。若判断结果为是，则执行步骤P160，将再次取得的指纹图像(例如是第二次指纹图像)存储成最终指纹图像，进行后续指纹识别流程。若判断结果为否，则执行步骤P170，将基础图像置换成目前再次取得的指纹图像(例如，第二次指纹图像)。接着，回到步骤P130，再依序执行步骤P130、P140及P150。如果步骤P150的判断结果为否，就一直不断地依序执行步骤P170、P130、P140及P150，直到步骤P150的判断结果为是，再终结循环，而执行步骤P160。如此一来，就可以确保最终指纹图像是亮纹与暗纹的对比度足够的指纹图像。这样的循 环就是上述再次读取N次手指50的指纹图像，以获得第N+2次指纹图像，直到第N+2次指纹图像的亮纹与暗纹的亮度差异符合预设范围为止。本实施例的指纹感测方法的其他细节在上述具指纹感测功能的电子装置100的实施例中已有详细的描述，在此不再重述。
在一实施例中，控制器130例如为中央处理单元(central processing unit,CPU)、微处理器(microprocessor)、数字信号处理器(digital signal processor,DSP)、可程序化控制器、可程序化逻辑设备(programmable logic device,PLD)或其他类似装置或这些装置的组合，本发明并不加以限制。此外，在一实施例中，控制器130的各功能可被实作为多个程序代码。这些程序代码会被存储在一个内存中，由控制器130来执行这些程序代码。或者，在一实施例中，控制器130的各功能可被实作为一或多个电路。本发明并不限制用软件或硬件的方式来实作控制器130的各功能。
综上所述，在本发明的实施例的具指纹感测功能的电子装置及指纹感测方法中，由于通过控制显示面板在指纹显示区中显示第一次取得的指纹图像，利用形状为第一次指纹图像的光源对手指再次发出照明光束，因此，第二次取得的指纹图像中的亮纹与暗纹可以具有较高的对比，以使指纹识别的成功率与准确率有效提升。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (15)

  1. 一种具指纹感测功能的电子装置，其特征在于，包括：
    显示面板，具有表面，用以供使用者的手指按压；以及
    感测模块，设置于所述显示面板下方，
    其中，所述显示面板在指纹感测区显示亮区以对所述手指发出照明光束，所述感测模块相应取得第一次指纹图像，所述显示面板随后在所述指纹感测区中显示所述第一次指纹图像，以利用所述第一次指纹图像作为光源形状照亮所述手指，所述感测模块相应取得第二次指纹图像。
  2. 根据权利要求1所述的具指纹感测功能的电子装置，其特征在于，所述指纹感测区中所显示的所述第一次指纹图像的暗纹位于所述手指的指纹沟槽下方，且所述指纹感测区中所显示的所述第一次指纹图像的亮纹位于所述手指的指纹凸脊下方。
  3. 根据权利要求1所述的具指纹感测功能的电子装置，其特征在于，若所述第二次指纹图像的亮纹与暗纹的亮度差异符合预设范围，则将所述第二次指纹图像存储成最终指纹图像；若所述第二次指纹图像的亮纹与暗纹的亮度差异不符合所述预设范围，则再次拍摄所述手指。
  4. 根据权利要求3所述的具指纹感测功能的电子装置，其特征在于，若所述第二次指纹图像的亮纹与暗纹的亮度差异不符合所述预设范围则再次拍摄所述手指的步骤包括：
    则再拍摄N次所述手指，以获得第N+2次指纹图像，直到所述第N+2次指纹图像的亮纹与暗纹的亮度差异符合所述预设范围为止，并将所述第N+2次指纹图像存储成所述最终指纹图像，其中所述第N+2次指纹图像是控制器命令所述显示面板在所述指纹感测区显示第N+1次指纹图像来第N+2次照亮所述手指时所取得的指纹图像，且N为正整数。
  5. 根据权利要求4所述的具指纹感测功能的电子装置，其特征在于，所述控制器根据所述最终指纹图像来进行指纹识别。
  6. 根据权利要求3所述的具指纹感测功能的电子装置，其特征在于，符合所述预设范围是指所述亮度差异大于预定值，或者符合所述预设范围是指所述亮度差异大于或等于预定值。
  7. 根据权利要求1所述的具指纹感测功能的电子装置，其特征在于，所 述亮区为均匀亮区。
  8. 根据权利要求1所述的具指纹感测功能的电子装置，其特征在于，还包括控制器，电性连接至所述显示面板与所述感测模块，且用以控制所述显示面板所发出的所述照明光束，且用以根据所述感测模块所取得的指纹图像控制所述光源形状。
  9. 一种指纹感测方法，其特征在于，包括：
    利用显示面板在指纹感测区显示亮区，以照亮按压于所述显示面板上的手指；
    取得第一次指纹图像；
    在所述指纹显示区中显示所述第一次指纹图像，以照亮所述手指；以及
    取得第二次指纹图像。
  10. 根据权利要求9所述的指纹感测方法，其特征在于，所述指纹感测区中所显示的所述第一次指纹图像的暗纹位于所述手指的指纹沟槽下方，且所述指纹感测区中所显示的所述第一次指纹图像的亮纹位于所述手指的凸脊下方。
  11. 根据权利要求9所述的指纹感测方法，其特征在于，还包括：
    判断所述第二次指纹图像的亮纹与暗纹的亮度差异是否符合预设范围，若符合，则将所述第二次指纹图像存储成最终指纹图像，若不符合，则再次照亮所述手指并取得指纹图像。
  12. 根据权利要求11所述的指纹感测方法，其特征在于，若不符合则再次照亮所述手指并取得指纹图像的步骤包括：
    再取得第N+2次指纹图像，直到所述第N+2次指纹图像的亮纹与暗纹的亮度差异符合所述预设范围为止，并将所述第N+2次指纹图像存储成所述最终指纹图像，其中所述第N+2次指纹图像是在所述指纹感测区显示第N+1次指纹图像来照亮所述手指时所取得的指纹图像，且N为正整数。
  13. 根据权利要求12所述的指纹感测方法，其特征在于，还包括根据所述最终指纹图像来进行指纹识别。
  14. 根据权利要求11所述的指纹感测方法，其特征在于，符合所述预设范围是指所述亮度差异大于预定值，或者符合所述预设范围是指所述亮度差异大于或等于预定值。
  15. 根据权利要求9所述的指纹感测方法，其特征在于，所述亮区为均匀亮区。
PCT/CN2020/115865 2020-05-14 2020-09-17 具指纹感测功能的电子装置及指纹感测方法 WO2021227327A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020227026782A KR20220116065A (ko) 2020-05-14 2020-09-17 지문 감지 기능을 지니는 전자 장치 및 지문 감지 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063025161P 2020-05-14 2020-05-14
US63/025,161 2020-05-14

Publications (1)

Publication Number Publication Date
WO2021227327A1 true WO2021227327A1 (zh) 2021-11-18

Family

ID=73759962

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/115865 WO2021227327A1 (zh) 2020-05-14 2020-09-17 具指纹感测功能的电子装置及指纹感测方法

Country Status (5)

Country Link
US (1) US11270097B2 (zh)
KR (1) KR20220116065A (zh)
CN (1) CN112101240A (zh)
TW (2) TWM604923U (zh)
WO (1) WO2021227327A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220116065A (ko) 2020-05-14 2022-08-19 에지스 테크놀러지 인코포레이티드 지문 감지 기능을 지니는 전자 장치 및 지문 감지 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130201091A1 (en) * 2012-02-06 2013-08-08 Innolux Corporation Three-dimensional display
CN108846371A (zh) * 2018-06-26 2018-11-20 武汉天马微电子有限公司 显示装置及其指纹识别方法
CN109154961A (zh) * 2018-02-26 2019-01-04 深圳市汇顶科技股份有限公司 基于利用透镜-针孔模块和其他光学设计的光学成像的lcd屏上光学指纹感测
CN110400812A (zh) * 2019-07-25 2019-11-01 京东方科技集团股份有限公司 显示面板、电子设备及显示面板的成像方法
CN110543821A (zh) * 2019-07-29 2019-12-06 京东方科技集团股份有限公司 纹路识别装置及其操作方法
CN110969126A (zh) * 2019-12-02 2020-04-07 厦门天马微电子有限公司 一种显示装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101444064B1 (ko) 2013-03-22 2014-09-26 주식회사 슈프리마 다중 스캔을 이용한 광학식 지문 인식 방법 및 장치
US9390311B2 (en) * 2014-10-16 2016-07-12 NanoGate Biometric Inc. Fingerprint identification method
US10115000B2 (en) * 2015-12-11 2018-10-30 Synaptics Incorporated Method and system for optical imaging using patterned illumination
CN107656665A (zh) * 2016-07-25 2018-02-02 印象认知（北京）科技有限公司 基于显示屏的指纹采集控制方法、装置及电子设备
KR102020638B1 (ko) * 2016-09-20 2019-11-04 삼성전자주식회사 가이드를 통해 지문 정보를 입력받는 장치 및 방법
CN108256399B (zh) * 2016-12-28 2020-10-27 上海箩箕技术有限公司 指纹成像模组和电子设备
CN108255356A (zh) * 2016-12-29 2018-07-06 上海箩箕技术有限公司 自发光显示面板、显示模组和显示模组的使用方法
CN111950529B (zh) * 2017-05-17 2023-05-16 深圳市汇顶科技股份有限公司 具有非接触成像能力的光学指纹传感器
EP3435280A4 (en) 2017-06-16 2019-05-01 Shenzhen Goodix Technology Co., Ltd. DIGITAL FOOTPRINT IMAGE PROCESSING METHOD, DIGITAL FOOTPRINT OPTICAL RECOGNITION SYSTEM, AND ELECTRONIC DEVICE
CN108124483B (zh) 2017-12-01 2022-06-07 深圳市汇顶科技股份有限公司 指纹影像增强方法及指纹影像模块
KR102535177B1 (ko) * 2017-12-21 2023-05-23 엘지디스플레이 주식회사 지문 인식 장치와 이를 포함한 표시장치와 모바일 단말기
TWM570473U (zh) * 2018-07-03 2018-11-21 金佶科技股份有限公司 取像模組
CN109711255A (zh) * 2018-11-26 2019-05-03 Oppo广东移动通信有限公司 指纹采集方法及相关装置
WO2020199159A1 (zh) * 2019-04-03 2020-10-08 深圳市汇顶科技股份有限公司 引导用户注册指纹的方法和电子设备
KR20220116065A (ko) * 2020-05-14 2022-08-19 에지스 테크놀러지 인코포레이티드 지문 감지 기능을 지니는 전자 장치 및 지문 감지 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130201091A1 (en) * 2012-02-06 2013-08-08 Innolux Corporation Three-dimensional display
CN109154961A (zh) * 2018-02-26 2019-01-04 深圳市汇顶科技股份有限公司 基于利用透镜-针孔模块和其他光学设计的光学成像的lcd屏上光学指纹感测
CN108846371A (zh) * 2018-06-26 2018-11-20 武汉天马微电子有限公司 显示装置及其指纹识别方法
CN110400812A (zh) * 2019-07-25 2019-11-01 京东方科技集团股份有限公司 显示面板、电子设备及显示面板的成像方法
CN110543821A (zh) * 2019-07-29 2019-12-06 京东方科技集团股份有限公司 纹路识别装置及其操作方法
CN110969126A (zh) * 2019-12-02 2020-04-07 厦门天马微电子有限公司 一种显示装置

Also Published As

Publication number Publication date
TWM604923U (zh) 2020-12-01
CN112101240A (zh) 2020-12-18
US11270097B2 (en) 2022-03-08
KR20220116065A (ko) 2022-08-19
TW202143111A (zh) 2021-11-16
US20210357611A1 (en) 2021-11-18
TWI772892B (zh) 2022-08-01

Similar Documents

Publication Publication Date Title
US10956547B2 (en) Biometrics authentication system
US11062112B2 (en) Fingerprint detection device and method and electronic device
US20210004562A1 (en) Fingerprint identification device and fingerprint identification method
US8045001B2 (en) Compound-eye imaging device
TW201915649A (zh) 電子裝置以及指紋感測方法
CN109657606B (zh) 光学指纹传感器模组的校正方法
CN211959311U (zh) 图像扫描装置
WO2021013253A1 (zh) 电子设备及其成像方法
WO2019041884A1 (zh) 显示模组及其显示方法、终端
WO2021227327A1 (zh) 具指纹感测功能的电子装置及指纹感测方法
TWI638334B (zh) 前景影像提取的影像處理方法與電子裝置
CN114140834A (zh) 光学式指纹感测设备及其驱动设备与操作方法
CN108550341B (zh) 一种显示设备及显示方法
US20220327668A1 (en) Fingerprint sensing module and fingerprint sensing method
TW202103044A (zh) 指紋識別裝置和指紋識別方法
TWI742477B (zh) 電子裝置
WO2020253190A1 (zh) 电子装置
CN108351684A (zh) 操作检测装置、操作检测方法以及影像显示系统
TWI792038B (zh) 影像採集方法及利用其之指紋讀取裝置與資訊處理裝置
US20210326580A1 (en) Face recognition device and face recognition method
WO2020253250A1 (zh) 电子装置
JP2011118465A (ja) 位置検出装置、撮像装置、位置検出方法、位置検出プログラムおよび記録媒体
WO2020052327A1 (zh) 自动搜索显示屏幕厚度参数的方法、存储介质及电子设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20935462

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20227026782

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20935462

Country of ref document: EP

Kind code of ref document: A1