WO2020233197A1 - 透镜、指纹识别模组和电子设备 - Google Patents

透镜、指纹识别模组和电子设备 Download PDF

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WO2020233197A1
WO2020233197A1 PCT/CN2020/078200 CN2020078200W WO2020233197A1 WO 2020233197 A1 WO2020233197 A1 WO 2020233197A1 CN 2020078200 W CN2020078200 W CN 2020078200W WO 2020233197 A1 WO2020233197 A1 WO 2020233197A1
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Prior art keywords
light
lens
display substrate
prism structure
identification module
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PCT/CN2020/078200
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English (en)
French (fr)
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冯彬峰
刘颖
李奇峰
罗永辉
王超
李飞
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Publication of WO2020233197A1 publication Critical patent/WO2020233197A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms

Definitions

  • the present disclosure relates to the field of optical technology, and in particular to a lens, a fingerprint recognition module and an electronic device.
  • Fingerprints are lines formed by linearly arranged protrusions (peaks) and depressions (valleys) on the surface of the finger. Because fingerprints have the characteristics of lifelong immutability, uniqueness and convenience, fingerprints have become one of the mainstream of biometric identification and are widely used in the fields of identity information authentication and identification such as security facilities and attendance systems.
  • the light reflected from the fingerprint needs to be transmitted to the optical sensor through the lens, and the lens in the related technology will diverge part of the light reflected from the fingerprint to the outside of the optical sensor, resulting in a waste of light, which can only be transmitted by emitting stronger light
  • the power consumption of the electronic device is high.
  • an embodiment of the present disclosure provides a lens that includes a lens body and a light entrance portion and a light exit portion located on opposite sides of the lens body, the light exit portion includes a prism structure, and light emitted from the prism structure To collimate light or converge light.
  • the light incident portion includes a convex lens structure, and a convex arc surface of the convex lens structure facing away from the lens body is used to receive light incident from different angles.
  • the prism structure includes a plurality of mutually parallel triangular prisms, the triangular prisms include a first side, a second side, and a third side connected end to end, the first side being parallel to the surface of the lens body, And the first sides of two adjacent triangular prisms are connected to each other.
  • the included angle between the second side surface and the third side surface is greater than or equal to 90° and less than or equal to 110°.
  • the embodiments of the present disclosure also provide a fingerprint identification module, including a display substrate, a photosensitive sensor located on the non-light emitting side of the display substrate, and the above-mentioned fingerprint recognition module located between the photosensitive sensor and the display substrate The lens, the light incident part of the lens faces the display substrate.
  • the distance between the photosensitive sensor and the display substrate is less than 2 mm.
  • the orthographic projection area of the photosensitive sensor on the display substrate is located in the orthographic projection area of the prism structure on the display substrate.
  • the display substrate is an organic light emitting diode display substrate.
  • embodiments of the present disclosure also provide a display screen, including the fingerprint identification module as described above.
  • an embodiment of the present disclosure further provides an electronic device including a display screen, and the display screen includes the fingerprint identification module as described above.
  • Figure 1 is a schematic structural diagram of a fingerprint recognition module in related technologies
  • FIG. 2 is a schematic diagram of another fingerprint recognition module in the related art
  • FIG. 3 is a schematic structural diagram of a fingerprint identification module provided by an embodiment of the disclosure.
  • the fingerprint recognition module in the related technology is shown in Figure 1, which is a conventional under-screen fingerprint module structure.
  • the lens and photosensitive sensor are located on the non-light emitting side of the display substrate, and the light emitted by the light source is reflected by the fingerprint of the finger.
  • the reflectivity is different, the reflected light after passing through the lens is imaged on the photosensitive sensor. Since the light reflected by the finger is divergent, some light is still emitted at a divergent angle after passing through the lens and is wasted, making it incident on the photosensitive sensor The light intensity is not enough.
  • the electronic device needs to provide a higher luminous intensity, which leads to an increase in the power consumption of the electronic device.
  • a collimator is added before the light reflected from the fingerprint enters the lens, as shown in Figure 2, the collimator It is a collimator-like structure composed of a deep hole array or optical fiber.
  • the solution shown in FIG. 2 obviously increases the thickness of the fingerprint module.
  • the embodiments of the present disclosure provide a lens, a fingerprint identification module, and an electronic device to solve the problem of high power consumption of electronic devices with fingerprint identification functions in the related art.
  • an embodiment of the present disclosure provides a lens 300, which includes a lens body 310, and a light entrance portion 320 and a light exit portion 330 respectively located on opposite sides of the lens body 310.
  • the light exit portion 330 includes a prism structure. The light emitted from the prism structure is collimated light or convergent light.
  • the prism structure can cause multiple internal reflections of the light entering the lens, so that the light emitted from the prism structure is collimated light or converged light, so as to avoid light divergence. Loss, improve the utilization of light, and then can reduce the intensity of light when the lens is applied to the fingerprint recognition module, and save the power consumption of electronic equipment. Therefore, the technical solution provided by the present disclosure can save the power consumption of the electronic device while ensuring the normal fingerprint recognition function.
  • the lens 300 is sequentially provided with a light entrance portion 320, a lens body 310 and a light exit portion 330 according to the propagation direction of light.
  • the light entrance portion 320, the lens body 310 and the light exit portion 330 are made of the same transparent material and are integrally formed.
  • the lens may be a plastic lens or a glass lens, wherein the refractive index of the lens 300 is greater than that of air.
  • the light emitting part 330 includes a prism structure, the cross section of the prism structure is zigzag, and the first light that meets the preset emission angle condition among the light transmitted from the lens body 310 to the prism structure can be emitted from the prism structure as collimated light or convergent light , Other second light rays that do not meet the preset emission angle conditions will be totally reflected back to the lens body 310 and the light incident portion 320, and then totally reflected back to the light emitting portion 330 on the light incident surface of the light incident portion 320, reciprocating multiple times , Until the second light becomes the first light that meets the preset emission angle condition, then it is emitted from the prism structure.
  • the light emitted from the prism structure is directed to the target position as collimated light or convergent light, thereby avoiding light loss due to light divergence, and improving the utilization of light.
  • the light incident portion 320 includes a convex lens structure, and a side of the convex lens structure facing away from the lens body 310 is a convex arc surface.
  • the light incident part 320 is designed as a convex arc structure, which can collect light from the outside into the lens from more angles, improve the light collection efficiency of the lens, and thereby increase the light utilization rate of the lens. For example, when the lens is used as the receiver of the fingerprint recognition module, it can collect light reflected from the finger at more angles.
  • the prism structure includes a plurality of mutually parallel triangular prisms, the triangular prisms include a first side, a second side, and a third side connected end to end, the first side being parallel to the surface of the lens body 310 , And the first sides of two adjacent triangular prisms are connected to each other.
  • the first side surface is parallel to the surface of the lens body 310 and is arranged on the surface of the lens body 310.
  • the first side surfaces of the plurality of triangular prisms are connected in sequence.
  • the second side surface and the third side surface can be used to emit the first light that meets the preset emission angle condition out of the prism structure through refraction.
  • the second side surface and the third side surface can also reflect the second light rays that do not meet the preset emission angle conditions back to the light incident surface of the light incident portion 320 through total reflection, and perform multiple total reflections until the second light rays meet the preset emission angle conditions.
  • the first ray of the angle condition can be used to emit the first light that meets the preset emission angle condition out of the prism structure through refraction.
  • the second side surface and the third side surface can also reflect the second light rays that do not meet the preset emission angle conditions back to the light incident surface of the light incident portion 320 through total reflection, and perform multiple total reflections until the second light rays meet the preset emission angle conditions.
  • the first ray of the angle condition can be used to emit the first light that meets the preset emission angle condition out of the prism structure through refraction.
  • the included angle between the second side surface and the third side surface may be greater than or equal to 90° and less than or equal to 110°. Ensure that the light emitted from the prism structure is collimated light or convergent light.
  • the embodiment of the present disclosure also provides a fingerprint recognition module, as shown in FIG. 3, comprising a display substrate 400, a photosensitive sensor 500 located on the non-light emitting side of the display substrate, and a fingerprint recognition module located on the photosensitive sensor 500 and the display substrate 400 Between the aforementioned lens 300, the light incident portion of the lens 300 faces the display substrate 400.
  • the prism structure can cause multiple internal reflections of the light entering the lens, so that the light emitted from the prism structure is collimated light or converged light, so as to avoid light divergence. Loss, improve the utilization of light, and then can reduce the intensity of light when the lens is applied to the fingerprint recognition module, and save the power consumption of electronic equipment. Therefore, the technical solution provided by the present disclosure can save the power consumption of the electronic device while ensuring the normal fingerprint recognition function.
  • the display substrate 400 is used as the light source of the fingerprint recognition module to provide light directed to the finger.
  • the user’s finger approaches the display substrate 400 from the light-emitting side of the display substrate 400, and the light is reflected from the finger to the non-light-emitting side of the display substrate 400.
  • the lens 300 is finally shot into the photosensitive sensor 500.
  • the fingerprint identification module may be an under-optical fingerprint identification module, and the light characteristic of the light emitted back to the photosensitive sensor through different fingerprint characteristics is different to achieve the effect of fingerprint identification.
  • the distance between the photosensitive sensor and the display substrate is less than 2 mm.
  • the space occupied by the collimator can be omitted, and the thickness of the fingerprint identification module can be reduced.
  • the orthographic projection area of the photosensitive sensor 500 on the display substrate 400 is located in the orthographic projection area of the prism structure on the display substrate 400.
  • the display substrate 400 is an organic light emitting diode display substrate.
  • the organic light emitting diode is a self-luminous structure, which can ensure the uniformity of the luminous brightness of the display substrate 400 and the amount of light directed to the finger, thereby ensuring that the fingerprint recognition module can work normally.
  • the embodiment of the present disclosure also provides a display screen, which includes the fingerprint identification module as described above.
  • An embodiment of the present disclosure further provides an electronic device including a display screen, and the display screen includes the fingerprint identification module as described above.
  • the electronic device may be a display, a mobile phone, a tablet computer, a television, a wearable device, a navigation display device, etc.
  • the display screen of the electronic device is used as the light source of the fingerprint recognition module.
  • the user can put his finger on the screen, and the photosensitive sensor under the screen can receive the light reflected by the finger, so as to realize the electronic device Fingerprint recognition function.

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

本公开提供一种透镜、指纹识别模组和电子设备。本公开提供的透镜，包括透镜本体以及分别位于透镜本体相对两侧的入光部和出光部，出光部包括棱镜结构，从棱镜结构射出的光线为准直光线或汇聚光线。

Description

透镜、指纹识别模组和电子设备
相关申请的交叉引用
本申请主张在2019年5月22日在中国提交的中国专利申请号No.201910429398.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及光学技术领域，尤其涉及一种透镜、指纹识别模组和电子设备。
背景技术
指纹是手指表皮层上由呈线状排列的凸起(即纹峰)与凹陷(纹谷)所形成的纹路。由于指纹具有终身不变性、唯一性以及便捷性等特点，指纹已经成为生物特征识别的主流之一，广泛应用于安防设施、考勤系统等身份信息认证识别领域。
通常从指纹上反射的光线需要经过透镜传递至光学传感器，而相关技术中的透镜会将部分从指纹上反射的光线发散至光学传感器之外，造成光线的浪费，只能通过发出更强的光才能确保光学传感器用于指纹识别所需的光量，导致电子设备的功耗较高。
发明内容
为了解决上述技术问题，本公开提供技术方案如下：
第一方面，本公开实施例提供一种透镜，包括透镜本体以及分别位于所述透镜本体相对两侧的入光部和出光部，所述出光部包括棱镜结构，从所述棱镜结构射出的光线为准直光线或汇聚光线。
进一步地，所述入光部包括凸透镜结构，所述凸透镜结构背离所述透镜本体的一侧为凸起的弧形面，用于接收不同角度入射的光线。
进一步地，所述棱镜结构包括多个相互平行的三棱柱，所述三棱柱包括首尾相连的第一侧面、第二侧面和第三侧面，所述第一侧面与所述透镜本体 的表面平行，且相邻两个三棱柱的第一侧面相互连接。
进一步地，所述第二侧面和所述第三侧面之间的夹角大于等于90°且小于等于110°。
第二方面，本公开实施例还提供一种指纹识别模组，包括显示基板、位于所述显示基板非出光侧的感光传感器，以及位于所述感光传感器与所述显示基板之间的如上所述的透镜，所述透镜的入光部朝向所述显示基板。
进一步地，所述感光传感器与所述显示基板之间的距离小于2毫米。
进一步地，所述感光传感器在所述显示基板上的正投影区域位于所述棱镜结构在所述显示基板的正投影区域内。
进一步地，所述显示基板为有机发光二极管显示基板。
第三方面，本公开实施例还提供一种显示屏，包括如上所述的指纹识别模组。
第四方面，本公开实施例还提供一种电子设备，包括显示屏，所述显示屏包括如上所述的指纹识别模组。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为相关技术中一种指纹识别模组的结构示意图；
图2为相关技术中另一种指纹识别模组的结构示意图；
图3为本公开一实施例提供的指纹识别模组的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
相关技术中指纹识别模组如图1所示，为常规屏下指纹模组结构，透镜和感光传感器位于显示基板的非出光侧，利用手指指纹反射光源所发的光，根据手指脊线脊部反射率的不同，将通过透镜后的反射光成像在感光传感器上，由于手指反射的光线为发散型，通过透镜后仍有部分光线以发散的角度发射出去而被浪费，使得射向感光传感器上的光强度不够，为达到指纹解锁的目的，需要电子设备提供更高的发光强度，导致电子设备的功耗增加。
其中，相关技术中为了使指纹反射光最大效率的射向感光传感器，在图1的基础上，在从指纹反射的光射入透镜之前增加了准直器，如图2所示，准直器是由深小孔阵列或光纤构成的类准直器，当手指压在显示面板表面时，从指纹反射的光中只有以直角或近似直角反射的光才能透过准直器到达透镜上。但是，图2所示的方案明显增加了指纹模组的厚度。
本公开实施例针对上述问题，提供一种透镜、指纹识别模组和电子设备，以解决相关技术中具有指纹识别功能的电子设备功耗较高的问题。
如图3所示，本公开实施例提供一种透镜300，包括透镜本体310以及分别位于所述透镜本体310相对两侧的入光部320和出光部330，所述出光部330包括棱镜结构，从所述棱镜结构射出的光线为准直光线或汇聚光线。
本公开实施例中，由于透镜的出光部包括棱镜结构，棱镜结构能够使进入透镜内的光线发生多次内部反射，使得从棱镜结构射出的光线为准直光线或汇聚光线，避免光线发散造成的损失，提高光线的利用率，进而在透镜应用到指纹识别模组时能够降低光线的强度，节约电子设备的功耗。因此，本公开提供的技术方案能够在确保指纹识别功能正常的情况下节约电子设备的功耗。
透镜300中按光的传播方向依次设置有入光部320、透镜本体310和出光部330，入光部320、透镜本体310和出光部330由相同透明材质制作而成且一体成型。透镜可以是塑胶透镜或玻璃透镜，其中，透镜300的折射系数大于空气的折射系数。
出光部330包括棱镜结构，棱镜结构的横截面为锯齿状，从透镜本体310传输至棱镜结构的光线中符合预设射出角度条件的第一光线能够从棱镜结构中作为准直光线或汇聚光线射出，其他不符合预设射出角度条件的第二光线 会通过全反射回到透镜本体310和入光部320，并在入光部320的入光面上重新全反射回出光部330，往复多次，直至第二光线变成符合预设射出角度条件的第一光线后再从棱镜结构射出。
从棱镜结构射出的光线以准直光线或汇聚光线射向目标位置，从而能够避免因光线发散造成的光线损失，提高了对光线的利用率。
进一步地，所述入光部320包括凸透镜结构，所述凸透镜结构背离所述透镜本体310的一侧为凸起的弧形面。
入光部320设计为凸起的弧形结构，能够从更多的角度收集从外界射入透镜的光线，提高透镜的收光效率，进而提高透镜对光线的利用率。例如：在透镜作为指纹识别模组的收光器时，能够更多角度的收集从手指反射的光线。
进一步地，所述棱镜结构包括多个相互平行的三棱柱，所述三棱柱包括首尾相连的第一侧面、第二侧面和第三侧面，所述第一侧面与所述透镜本体310的表面平行，且相邻两个三棱柱的第一侧面相互连接。
第一侧面平行于透镜本体310的表面，且设置于与透镜本体310的表面上，多个三棱柱的第一侧面依次相连。
第二侧面和第三侧面可以用于将符合预设射出角度条件的第一光线通过折射的方式射出棱镜结构。第二侧面和第三侧面也可以将不符合预设射出角度条件的第二光线通过全反射反射回入光部320的入光面进行多次全反射，直至第二光线变为符合预设射出角度条件的第一光线。
其中，所述第二侧面和所述第三侧面之间的夹角可以大于等于90°且小于等于110°。确保从棱镜结构射出的光线为准直光线或汇聚光线。本公开实施例还提供一种指纹识别模组，如图3所示，包括显示基板400、位于所述显示基板非出光侧的感光传感器500，以及位于所述感光传感器500与所述显示基板400之间的如上所述的透镜300，所述透镜300的入光部朝向所述显示基板400。
本公开实施例中，由于透镜的出光部包括棱镜结构，棱镜结构能够使进入透镜内的光线发生多次内部反射，使得从棱镜结构射出的光线为准直光线或汇聚光线，避免光线发散造成的损失，提高光线的利用率，进而在透镜应 用到指纹识别模组时能够降低光线的强度，节约电子设备的功耗。因此，本公开提供的技术方案能够在确保指纹识别功能正常的情况下节约电子设备的功耗。其中，显示基板400作为指纹识别模组的光源，用于提供射向手指的光线，用户的手指从显示基板400的出光侧靠近显示基板400，光线从手指反射至位于显示基板400非出光侧的透镜300，并最终射入感光传感器500。
本公开实施例中，指纹识别模组可以为光学屏下指纹识别模组，通过不同指纹特征发射回感光传感器的光线特征不同，达到指纹识别的效果。
进一步地，所述感光传感器与所述显示基板之间的距离小于2毫米。
本实施例中，相较于图2所示，能够省去准直器所占的空间，达到减薄指纹识别模组厚度的效果。
进一步地，所述感光传感器500在所述显示基板400上的正投影区域位于所述棱镜结构在所述显示基板400的正投影区域内。
进一步地，所述显示基板400为有机发光二极管显示基板。
有机发光二极管为自发光结构，能够确保显示基板400发光亮度的均匀性，确保射向手指的光量，进而确保指纹识别模组能够正常工作。
本公开实施例还提供一种显示屏，所述显示屏包括如上所述的指纹识别模组。
本公开实施例还提供一种电子设备，包括显示屏，所述显示屏包括如上所述的指纹识别模组。
所述电子设备可以是显示器、手机、平板电脑、电视机、可穿戴设备、导航显示设备等。
即通过电子设备的显示屏作为指纹识别模组的光源，用户在需要进行指纹识别时可以将手指放在屏幕上，屏幕下方的感光传感器即能够接收到手指反射后的光线，从而实现电子设备的指纹识别功能。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元 件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”，或者可以存在中间元件。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (10)

  1. 一种透镜，包括透镜本体以及分别位于所述透镜本体相对两侧的入光部和出光部，所述出光部包括棱镜结构，从所述棱镜结构射出的光线为准直光线或汇聚光线。
  2. 根据权利要求1所述的透镜，其中，所述入光部包括凸透镜结构，所述凸透镜结构背离所述透镜本体的一侧为凸起的弧形面，用于接收不同角度入射的光线。
  3. 根据权利要求1所述的透镜，其中，所述棱镜结构包括多个相互平行的三棱柱，所述三棱柱包括首尾相连的第一侧面、第二侧面和第三侧面，所述第一侧面与所述透镜本体的表面平行，且相邻两个三棱柱的第一侧面相互连接。
  4. 根据权利要求3所述的透镜，其中，所述第二侧面和所述第三侧面之间的夹角大于等于90°且小于等于110°。
  5. 一种指纹识别模组，包括显示基板、位于所述显示基板非出光侧的感光传感器，以及位于所述感光传感器与所述显示基板之间的如权利要求1-4中任一项所述的透镜，所述透镜的入光部朝向所述显示基板。
  6. 根据权利要求5所述的指纹识别模组，其中，所述感光传感器与所述显示基板之间的距离小于2毫米。
  7. 根据权利要求5所述的指纹识别模组，其中，所述感光传感器在所述显示基板上的正投影区域位于所述棱镜结构在所述显示基板的正投影区域内。
  8. 根据权利要求5所述的指纹识别模组，其中，所述显示基板为有机发光二极管显示基板。
  9. 一种显示屏，包括如权利要求5-8中任一项所述的指纹识别模组。
  10. 一种电子设备，包括显示屏，所述显示屏包括如权利要求5-8中任一项所述的指纹识别模组。
PCT/CN2020/078200 2019-05-22 2020-03-06 透镜、指纹识别模组和电子设备 WO2020233197A1 (zh)

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