WO2020220304A1 - 指纹识别的装置和电子设备 - Google Patents

指纹识别的装置和电子设备 Download PDF

Info

Publication number
WO2020220304A1
WO2020220304A1 PCT/CN2019/085291 CN2019085291W WO2020220304A1 WO 2020220304 A1 WO2020220304 A1 WO 2020220304A1 CN 2019085291 W CN2019085291 W CN 2019085291W WO 2020220304 A1 WO2020220304 A1 WO 2020220304A1
Authority
WO
WIPO (PCT)
Prior art keywords
display screen
flexible display
light
glue
layer
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/085291
Other languages
English (en)
French (fr)
Inventor
曾媛媛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Goodix Technology Co Ltd
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 Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Priority to CN201980002816.9A priority Critical patent/CN110799988B/zh
Priority to PCT/CN2019/085291 priority patent/WO2020220304A1/zh
Priority to CN201921819297.9U priority patent/CN212749851U/zh
Publication of WO2020220304A1 publication Critical patent/WO2020220304A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V40/1329—Protecting the fingerprint sensor against damage caused by the finger
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V40/1347—Preprocessing; Feature extraction
    • G06V40/1359—Extracting features related to ridge properties; Determining the fingerprint type, e.g. whorl or loop

Definitions

  • the embodiments of the present application relate to the field of biometric identification, and more specifically, to a fingerprint identification device and electronic equipment.
  • the fingerprint recognition technology under the optical screen uses the optical fingerprint module to collect the light emitted by the light source and reflect the reflected light on the finger above the display screen.
  • the reflected light carries the fingerprint information of the finger to realize the fingerprint recognition under the screen.
  • deformation may occur in the finger pressing area, which not only affects the user experience, but also affects the optical fingerprint model.
  • the fingerprint recognition performance of the group may even cause damage to the flexible display and optical fingerprint module.
  • the embodiments of the present application provide a fingerprint identification device and electronic equipment, which can realize under-screen fingerprint identification of a flexible display screen.
  • a fingerprint identification device which is applied to an electronic device with a flexible display screen, and the device includes:
  • a supporting structure configured to be at least partially disposed in a light-transmitting area below the flexible display screen, and the supporting structure is used to support the flexible display screen;
  • the optical fingerprint module is used to be arranged on the supporting structure, and the optical fingerprint module is used to collect the light signal reflected or scattered by the finger above the flexible display screen and transmitted from the light-transmitting area.
  • the supporting structure is a boss structure, and the boss of the boss structure is located in the light-transmitting area.
  • the protrusion is located under the foam layer of the flexible display screen.
  • the edge of the protrusion and the foam layer of the flexible display screen are connected by foam or glue film.
  • the non-protruding portion of the boss structure is located below the middle frame of the electronic device.
  • the upper surface of the non-protruding portion is stuck to the lower surface of the middle frame by glue or film.
  • a metal sheet is provided between the flexible display screen and the middle frame of the electronic device, and a light-transmitting window is provided on the metal sheet, and the light-transmitting window is located in the In the light-transmitting area, the non-protruding portion is located below the metal sheet.
  • the upper surface of the non-protruding portion is pasted to the lower surface of the metal sheet by glue or film.
  • the protruding part is formed of cured glue
  • the non-protruding part is a transparent flat plate pasted under the protruding part.
  • the protrusion is formed by filling the glue before curing into the transparent window of the metal sheet and curing it.
  • the height of the upper surface of the protrusion is the same as the height of the upper surface of the metal sheet.
  • the convex portion and the upper surface of the metal sheet are covered with an overflow glue layer formed by the glue overflowing the transparent window of the metal sheet before curing.
  • the glue is ultraviolet curing UV glue.
  • the boss structure is integrally made of a transparent material.
  • the transparent material is transparent glass or resin.
  • the spacer layer is an air spacer layer.
  • At least one through hole is provided on the spacer layer, and the at least one through hole is used to transmit the optical signal.
  • the spacer layer is a foam layer or a metal layer.
  • a plurality of through holes are provided on the supporting structure, and the plurality of through holes are used to transmit the optical signal.
  • the support structure is a foam layer or a metal layer.
  • the device further includes: a buffer layer, which is arranged between the flexible display screen and the support structure.
  • the buffer layer is fixed on the lower surface of the flexible display screen.
  • the spacer layer is located between the buffer layer and the support structure.
  • the buffer layer is fixed on the upper surface of the support structure.
  • the spacer layer is located between the buffer layer and the flexible display screen.
  • the upper surface of the buffer layer is glued to the lower surface of the flexible display screen, and the lower surface of the buffer layer is glued to the upper surface of the protrusion of the boss structure.
  • the buffer layer includes one or more transparent film materials.
  • the optical fingerprint module is fixed on the lower surface of the supporting structure.
  • a method for manufacturing a support structure is provided, the support structure is used to support a flexible display screen of an electronic device, the support structure is a boss structure, and the method includes:
  • the glue in the liquid state is cured to obtain the boss structure, wherein the convex part of the boss structure is the glue after curing, and the non-convex part of the boss structure is the transparent flat.
  • the height of the upper surface of the protrusion is the same as the height of the upper surface of the metal sheet.
  • the convex portion and the upper surface of the metal sheet are covered with an overflow glue layer formed by the glue overflowing the transparent window of the metal sheet before curing.
  • the glue is a curing glue, such as a thermosetting glue or a UV glue.
  • the transparent plate is made of transparent glass or transparent resin.
  • a terminal device including:
  • the electronic device further includes a middle frame.
  • a metal sheet is arranged between the flexible display screen and the middle frame.
  • the support structure can provide support for the flexible display screen, reduce the deformation caused by the finger pressing the flexible display screen during the fingerprint recognition process, and avoid damage to the flexible display screen. Damage to the display.
  • the optical fingerprint module is arranged on the supporting structure, the distance between the optical fingerprint module and the flexible display screen can be flexibly adjusted through the supporting structure, thereby improving the performance of fingerprint recognition.
  • the optical fingerprint module and the flexible display screen have been decoupled, it is convenient to disassemble and install the optical fingerprint module, and facilitate the maintenance of the optical fingerprint module.
  • Fig. 1 is a schematic diagram of the structure of an electronic device to which this application can be applied.
  • Fig. 2 is a schematic cross-sectional view of the electronic device shown in Fig. 1 along the A-A' direction.
  • Fig. 3 is a schematic block diagram of a fingerprint recognition device according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a possible structure of the fingerprint identification device in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a possible structure of a fingerprint identification device according to an embodiment of the present application.
  • Fig. 6 is a schematic diagram of various components of the fingerprint recognition device in Fig. 5.
  • FIG. 7 is a schematic diagram of a possible structure of the fingerprint identification device of the embodiment of the present application.
  • 8(a) to 8(c) are schematic diagrams of the buffer layer of the embodiment of the present application.
  • FIG. 9 is a schematic diagram of a possible structure of a fingerprint identification device according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a possible structure of a fingerprint identification device according to an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of a manufacturing method of a support structure according to an embodiment of the present application.
  • Fig. 12 is a plan view of a metal sheet according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a boss structure used in the method shown in FIG. 11.
  • Fig. 14 is a schematic diagram of a boss structure manufactured based on the method shown in Fig. 11.
  • Figure 15 is a schematic diagram of the overflow adhesive layer.
  • FIG. 16 is a schematic diagram of a possible structure of a fingerprint identification device according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of a possible structure of a fingerprint identification device according to an embodiment of the present application.
  • FIG. 18 is a schematic diagram of a possible structure of a fingerprint identification device according to an embodiment of the present application.
  • embodiments of this application can be applied to optical fingerprint systems, including but not limited to optical fingerprint identification systems and medical diagnostic products based on optical fingerprint imaging.
  • the embodiments of this application only take optical fingerprint systems as an example for description, but should not The embodiments of the application constitute any limitation, and the embodiments of the present application are also applicable to other systems using optical imaging technology.
  • the optical fingerprint system provided in the embodiments of this application can be applied to smart phones, tablet computers, and other mobile terminals with display screens or other terminal devices; more specifically, in the above-mentioned terminal devices, the optical fingerprint
  • the module may be specifically an optical fingerprint module, which may be arranged in a partial area or the entire area below the display screen to form an under-display or under-screen optical fingerprint system.
  • the optical fingerprint module can also be partially or fully integrated into the display screen of the terminal device to form an in-display or in-screen optical fingerprint system.
  • FIG. 1 is a schematic diagram of the electronic device 10
  • FIG. 2 is a schematic partial cross-sectional view of the electronic device 10 shown in FIG. 1 along the A-A' direction.
  • the terminal device 10 includes a display screen 120 and an optical fingerprint module 130.
  • the optical fingerprint module 130 is arranged in a partial area below the display screen 120.
  • the optical fingerprint module 130 includes an optical fingerprint sensor, and the optical fingerprint sensor includes a sensing array 133 having a plurality of optical sensing units 131.
  • the area where the sensing array 133 is located or its sensing area is the fingerprint detection area 121 of the optical fingerprint module 130 (also referred to as a fingerprint collection area, a fingerprint recognition area, etc.). As shown in FIG. 1, the fingerprint detection area 121 is located in the display area of the display screen 120.
  • the optical fingerprint module 130 may also be arranged in other positions, such as the side of the display screen 120 or the non-transparent area of the edge of the terminal device 10, and the optical fingerprint module 130 The optical signal of at least part of the display area of the display screen 120 is guided to the optical fingerprint module 130 so that the fingerprint detection area 121 is actually located in the display area of the display screen 120.
  • the area of the fingerprint detection area 121 may be different from the area of the sensing array 133 of the optical fingerprint module 130, for example, through an optical path design such as lens imaging, a reflective folding optical path design, or other optical paths such as light convergence or reflection.
  • the design can make the area of the fingerprint detection area 121 of the optical fingerprint module 130 larger than the area of the sensing array 133 of the optical fingerprint module 130.
  • the fingerprint detection area 121 of the optical fingerprint module 130 may also be designed to be substantially the same as the area of the sensing array of the optical fingerprint module 130.
  • the terminal device 10 adopting the above structure does not need to reserve a space on the front side for the fingerprint button (such as the Home button), so that a full screen solution can be adopted, that is, the display area of the display screen 120 It can be basically extended to the front of the entire terminal device 10.
  • the optical fingerprint module 130 includes a light detecting part 134 and an optical component 132.
  • the light detection part 134 includes the sensor array 133, a reading circuit electrically connected to the sensor array 133, and other auxiliary circuits, which can be fabricated on a chip (Die) by a semiconductor process, such as an optical imaging chip Or an optical fingerprint sensor.
  • the sensing array 133 is specifically a photodetector (Photodetector) array, which includes a plurality of photodetectors distributed in an array, and the photodetectors can be used as the aforementioned optical sensing unit.
  • the optical component 132 may be disposed above the sensing array 133 of the light detecting part 134, and it may specifically include a filter layer (Filter), a light guide layer or a light path guiding structure, and other optical elements.
  • the filter layer It can be used to filter out ambient light penetrating the finger, and the light guide layer or light path guiding structure is mainly used to guide the reflected light reflected from the surface of the finger to the sensor array 133 for optical detection.
  • the optical assembly 132 and the light detecting part 134 may be packaged in the same optical fingerprint component.
  • the optical component 132 and the optical detection part 134 can be packaged in the same optical fingerprint chip, or the optical component 132 can be arranged outside the chip where the optical detection part 134 is located, for example, the optical component 132 is attached above the chip, or some components of the optical assembly 132 are integrated into the chip.
  • the light guide layer or light path guiding structure of the optical component 132 has multiple implementation schemes.
  • the light guide layer may specifically be a collimator layer made on a semiconductor silicon wafer, which has multiple A collimating unit or a micro-hole array.
  • the collimating unit can be specifically a small hole.
  • the reflected light reflected from the finger the light that is perpendicularly incident on the collimating unit can pass through and be passed by the optical sensing unit below it.
  • the light with an excessively large incident angle is attenuated by multiple reflections inside the collimating unit. Therefore, each optical sensing unit can basically only receive the reflected light reflected by the fingerprint pattern directly above it.
  • the sensing array 133 can detect the fingerprint image of the finger.
  • the light guide layer or the light path guide structure may also be an optical lens (Lens) layer, which has one or more lens units, such as a lens group composed of one or more aspheric lenses, which The sensing array 133 of the light detecting part 134 is used to converge the reflected light reflected from the finger to the sensing array 133 of the light detection part 134 below, so that the sensing array 133 can perform imaging based on the reflected light, thereby obtaining a fingerprint image of the finger.
  • the optical lens layer may further have a pinhole formed in the optical path of the lens unit, and the pinhole may cooperate with the optical lens layer to expand the field of view of the optical fingerprint module 130 to improve The fingerprint imaging effect of the optical fingerprint module 130 is described.
  • the light guide layer or the light path guide structure may also specifically adopt a micro-lens (Micro-Lens) layer.
  • the micro-lens layer has a micro-lens array formed by a plurality of micro-lenses, which can be grown by semiconductors.
  • a process or other processes are formed above the sensing array 133 of the light detecting part 134, and each microlens may correspond to one of the sensing units of the sensing array 133, respectively.
  • other optical film layers may be formed between the microlens layer and the sensing unit, such as a dielectric layer or a passivation layer.
  • a light blocking layer (or called a light shielding layer) with microholes may also be included, wherein the microholes are formed between the corresponding microlens and the sensing unit.
  • the light blocking layer can block the optical interference between the adjacent microlens and the sensing unit, and make the light corresponding to the sensing unit converge into the microhole through the microlens and pass through the microhole. It is transmitted to the sensing unit for optical fingerprint imaging.
  • a micro lens layer may be further provided above or below the collimator layer or the optical lens layer.
  • the collimator layer or the optical lens layer is used in combination with the micro lens layer, its specific laminated structure or optical path may need to be adjusted according to actual needs.
  • the display screen 120 may be a display screen with a self-luminous display unit, such as an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display or a micro-LED (Micro-LED) display Screen.
  • OLED Organic Light-Emitting Diode
  • the optical fingerprint module 130 may use the display unit (ie, an OLED light source) of the OLED display screen 120 located in the fingerprint detection area 121 as an excitation light source for optical fingerprint detection.
  • the display screen 120 emits a beam of light 111 to the target finger 140 above the fingerprint detection area 121.
  • the light 111 is reflected on the surface of the finger 140 to form reflected light or pass through all the fingers.
  • the finger 140 scatters to form scattered light.
  • the above-mentioned reflected light and scattered light are collectively referred to as reflected light. Because the ridge 141 and valley 142 of the fingerprint have different light reflection capabilities, the reflected light 151 from the fingerprint ridge and the reflected light 152 from the fingerprint valley have different light intensities, and the reflected light passes through the optical component 132.
  • the terminal device 10 realizes the optical fingerprint recognition function.
  • the optical fingerprint module 130 may also use a built-in light source or an external light source to provide an optical signal for fingerprint detection.
  • the optical fingerprint module 130 may be suitable for non-self-luminous display screens, such as liquid crystal display screens or other passively-luminous display screens.
  • the optical fingerprint system of the terminal device 10 may also include an excitation light source for optical fingerprint detection.
  • the excitation light source may specifically be an infrared light source or a light source of invisible light of a specific wavelength, which may be arranged under the backlight module of the liquid crystal display or arranged in the edge area under the protective cover of the terminal device 10, and the
  • the optical fingerprint module 130 may be arranged under the edge area of the liquid crystal panel or the protective cover and guided by the light path so that the fingerprint detection light can reach the optical fingerprint module 130; or, the optical fingerprint module 130 may also be arranged at all Below the backlight module, and the backlight module is designed to allow the fingerprint detection light to pass through the liquid crystal panel and the backlight module and reach the optical Fingerprint module 130.
  • the optical fingerprint module 130 uses a built-in light source or an external light source to provide an optical signal for fingerprint detection, the detection principle is the same as that described above.
  • the terminal device 10 further includes a transparent protective cover, and the cover may be a glass cover or a sapphire cover, which is located above the display screen 120 and covers the terminal.
  • the optical fingerprint module 130 may include only one optical fingerprint sensor.
  • the fingerprint detection area 121 of the optical fingerprint module 130 has a small area and a fixed position, so the user is performing During fingerprint input, it is necessary to press the finger to a specific position of the fingerprint detection area 121, otherwise the optical fingerprint module 130 may not be able to collect fingerprint images, resulting in poor user experience.
  • the optical fingerprint module 130 may specifically include multiple optical fingerprint sensors. The multiple optical fingerprint sensors may be arranged side by side under the display screen 120 in a splicing manner, and the sensing areas of the multiple optical fingerprint sensors collectively constitute the fingerprint detection area 121 of the optical fingerprint module 130.
  • the fingerprint detection area 121 of the optical fingerprint module 130 may include multiple sub-areas, and each sub-area corresponds to the sensing area of one of the optical fingerprint sensors, so that the fingerprint detection area of the optical fingerprint module 130 121 can be extended to the main area of the lower half of the display screen, that is, to the area where the finger is habitually pressed, so as to realize the blind fingerprint input operation.
  • the fingerprint detection area 121 can also be extended to half of the display area or even the entire display area, thereby realizing half-screen or full-screen fingerprint detection.
  • the display screen 120 may be a flexible display screen or a folding display screen.
  • the display screen 120 may be made of flexible materials such as plastic or metal.
  • the display screen 120 shown in FIG. 1 is an outward-turning folding display screen, and the display area of the display screen 120 is outside the display screen 120.
  • the embodiment of the present application is also applicable to an inverted folding display screen.
  • the display area of the display screen 120 may be inside the display screen 120.
  • the transparent protective cover above it can be a flexible cover for protecting the display screen 120.
  • the material of the flexible cover plate may be, for example, a flexible material such as polyimide resin film (Polyimide Film, PI).
  • PI polyimide Film
  • the flexible cover cannot provide support for the display screen 120.
  • the part of the display screen 120 in the pressing area will be deformed, which not only affects the user experience , It may also affect the fingerprint recognition performance of the optical fingerprint module, and may even cause damage to the flexible display 120 and the optical fingerprint module.
  • an embodiment of the present application proposes a fingerprint identification device, which can realize under-screen fingerprint identification of a flexible display screen.
  • FIG. 3 is a schematic diagram of a fingerprint identification device 300 according to an embodiment of the present application.
  • the fingerprint recognition device 300 is applied to an electronic device with a flexible display 310.
  • the fingerprint recognition device 300 includes a supporting structure 320 and an optical fingerprint module 330.
  • the supporting structure 320 is configured to be at least partially disposed in the light-transmitting area under the flexible display screen 310, and the supporting structure 320 is configured to support the flexible display screen 310.
  • the optical fingerprint module 330 is used to be arranged on the support structure 320, and the optical fingerprint module 330 is used to collect light reflected or scattered by the finger above the flexible display 310 and transmitted from the light-transmitting area signal.
  • the light-transmitting area can be understood as an area used to transmit light signals for fingerprint recognition, that is, the area through which light passes during the fingerprint recognition process.
  • the support structure 320 is provided between the flexible display 310 and the optical fingerprint module 330, during fingerprint recognition, the part of the flexible display 310 in the finger pressing area will be supported by the support structure 320 without serious problems. Deformation improves the user experience and avoids the impact on the fingerprint recognition performance of the optical fingerprint module 330.
  • the flexible display screen 310 may be, for example, a flexible LCD display screen or a flexible OLED display screen.
  • the light-emitting layer of the flexible OLED display screen may include a plurality of organic light-emitting diode light sources, and the optical fingerprint module 330 may use at least part of the organic light-emitting diode light sources as excitation light sources for fingerprint recognition.
  • the flexible display screen 310 may correspond to the display screen 120 shown in FIGS. 1 and 2.
  • the flexible display 310 may include at least one of the following: flexible cover glass, touch control layer, polarizer, OLED light-emitting layer, foam layer, display light-shielding and heat-dissipating buffer layer, metal layer, various adhesive layers such as OCA Or PET etc.
  • the optical fingerprint module 330 may correspond to the optical fingerprint module 130 in FIGS. 1 and 2.
  • the optical fingerprint module 330 may include an optical component and an optical fingerprint sensor. Wherein, the optical component is used to guide the optical signal to the optical fingerprint sensor, and the optical fingerprint sensor is used to obtain fingerprint information of the finger according to the collected optical signal.
  • the optical components include optical filters, optical path modulators and other optical components.
  • the optical path modulator may be composed of a collimating hole array, or at least one lens, or a micro lens array, for example.
  • the optical fingerprint module 330 may also include a flexible circuit board and the like.
  • the fingerprint detection area of the optical fingerprint module 330 is at least partially located in the display area of the flexible display screen 310, and a light-transmitting area below the fingerprint detection area is used for light transmission. Wherein, the light signal reflected or scattered by the finger on the fingerprint detection area reaches the optical fingerprint module 330 through the transparent area.
  • the optical fingerprint module 330 performs fingerprint identification according to the collected optical signal.
  • the supporting structure 320 may specifically be used to support the part of the flexible display screen 310 in the fingerprint detection area, so as to prevent the part of the flexible display screen 310 in the fingerprint detection area from sinking. In other words, the supporting structure 320 is used to support the part of the flexible display screen 310 located above the light-transmitting area.
  • optical fingerprint module 330 For the related description of the optical fingerprint module 330, please refer to the description of the optical fingerprint module 130 in FIG. 1 and FIG. 2. For the sake of brevity, it will not be repeated here.
  • the optical fingerprint module 330 can be pasted on the lower surface of the support structure 320 by materials such as glue or film.
  • the optical fingerprint module 330 includes an optical path modulator composed of an array of collimating holes; the optical fingerprint module 330 can also pass fingerprints.
  • the module holder is fixed on the lower surface of the supporting structure 320.
  • the optical fingerprint module 330 includes an optical path modulator composed of lenses or microlenses.
  • the optical fingerprint module 330 may also be fixed on the supporting structure 320 in other ways, such as mechanical fixing such as screw fixing, which is not limited in this application.
  • the optical fingerprint module 330 can also be fixed on the middle frame.
  • the edge of the optical fingerprint module 330 is pasted on the bottom surface of the middle frame, or the optical fingerprint module 330 is pasted on the bottom surface of the middle frame through its circuit board, or the edge of the transparent window of the middle frame 340 is provided with steps and optically
  • the fingerprint module 330 is fixed on the step structure on the lower surface of the middle frame.
  • the middle frame 340 of the electronic device can be used to support the flexible display 310 and fix other components.
  • the middle frame 340 has a light-transmitting window located below the fingerprint detection area, so that the light signal reflected or scattered by the finger above the fingerprint detection area can be transmitted to the optical fingerprint module 330 through the light-transmitting window.
  • the middle frame 340 Since the middle frame 340 is also provided with various holes and slots for fixing other structures and components, the middle frame 340 cannot provide the entire screen support for the flexible display screen 310.
  • a metal sheet 370 such as a steel sheet, may be provided between the middle frame 340 of the electronic device and the flexible display 310.
  • the metal sheet 370 is provided with a light-transmitting window, the light-transmitting window is located below the fingerprint detection area, and is used to transmit the light signal reflected or scattered by the finger above the fingerprint detection area, so that the light signal can reach the optical fingerprint model.
  • Group 330 is provided.
  • the supporting structure 320 can be used to support the part of the flexible display screen 310 that is located in the fingerprint detection area, and the metal sheet 370 can be used to support the part of the flexible display screen 310 that is located outside the fingerprint detection area, so as to realize the flexible display The entire screen support of the screen 310.
  • the embodiment of the present application does not limit the thickness of the metal sheet 370, for example, it may be 0-300 microns, or 50-200 microns.
  • the metal sheet 370 can be fabricated with the flexible display 310 to be a part of the flexible display 310; it can also be fabricated with the middle frame 340 to be a part of the middle frame 340, or as a part of the flexible display 310 and the middle frame.
  • the independent components of the frame 340 are installed between the flexible display 310 and the middle frame 340.
  • FIG. 4 shows a flexible display screen 310, an optical fingerprint module 330 and a middle frame 340.
  • the foam layer 311 of the flexible display 310 and the middle frame 340 are connected by a foam layer 341.
  • the optical fingerprint module 330 and the middle frame 340 are connected by a foam layer 331.
  • the foam layer 341 and the foam layer 331 can also be replaced with other adhesive materials such as adhesive film and glue.
  • the foam layer in the embodiments of the present application can be considered to include foam and back glue on the upper and lower surfaces of the foam, so it can also be called foam glue.
  • the foam layer can play the role of adhesion and cushioning.
  • the light-transmitting window of the foam layer 311 and the light-transmitting window of the middle frame 340 shown in FIG. 4 form the aforementioned light-transmitting area for transmitting optical signals.
  • the optical fingerprint module 330 is located under the transparent area. The light signal reflected or scattered by the finger on the fingerprint detection area 312 is transmitted to the optical fingerprint module 330 through the light-transmitting area, and the optical fingerprint module 330 performs fingerprint identification according to the collected light signal.
  • an obvious step area is formed at the fingerprint detection area 312 in the flexible display screen 310.
  • This stepped area not only reduces the user experience, but may also damage the flexible display 310 due to finger pressing, and affect the fingerprint recognition performance of the optical fingerprint module 330.
  • a support structure 320 is provided in the light-transmitting area under the flexible display screen 310 to support the step area.
  • the supporting structure 320 should have a certain degree of hardness. At the same time, the supporting structure 320 should be able to transmit optical signals so that the optical signals reflected or scattered by the finger can be transmitted to the optical fingerprint module 330.
  • the support structure 320 may be transparent.
  • the support structure 320 may be made of a transparent material such as optical glass or optical resin.
  • multiple through holes may be provided on the support structure 320, and the multiple through holes are used to transmit optical signals.
  • the flexible display screen 310 and the support structure 320 may be closely attached to each other; or, preferably, there is a spacer layer 350 between the flexible display screen 310 and the support structure 320.
  • the spacer layer 350 may be an air spacer layer, that is, there is an air gap between the flexible display screen 310 and the supporting structure 320.
  • the spacer layer 350 may be a foam layer or a metal layer, and the spacer layer 350 is provided with at least one through hole, so as to transmit optical signals through the at least one through hole. It is equivalent to providing through holes for transmitting optical signals on the foam layer or the metal layer.
  • the interference fringes caused by the deformation of the flexible display screen 310 will affect the fingerprint recognition performance of the optical fingerprint module 330, which is usually called "water ripple".
  • the spacer layer 350 between the flexible display screen 310 and the supporting structure 320 should have an appropriate thickness.
  • the embodiment of the present application does not limit the thickness of the spacer layer 350, for example, it may be 100-150 microns.
  • the size of the spacer layer 350 between the optical fingerprint module 330 and the flexible display 310 can be adjusted indirectly by adjusting the installation position of the support structure 320 in the vertical direction Therefore, while avoiding interference fringes caused by the deformation of the flexible display screen 310, the deformation space of the flexible display screen 310 is reduced.
  • the fingerprint recognition device 300 further includes a buffer layer 360.
  • the buffer layer 360 is used to be arranged between the sexual display screen 310 and the supporting structure 320.
  • the buffer layer 360 may be fixed on the lower surface of the flexible display screen 310, such as being pasted on the lower surface of the flexible display screen 310 by an adhesive layer.
  • the spacer layer 350 is located between the buffer layer 360 and the supporting structure 320.
  • the buffer layer 360 is fixed on the upper surface of the support structure 320, such as being pasted on the upper surface of the support structure 320 by a glue layer.
  • the spacer layer 350 is located between the buffer layer 360 and the flexible display 310.
  • two buffer layers 360 may be provided.
  • One buffer layer 360 is fixed on the upper surface of the support structure 320, and the other buffer layer 360 is fixed on the lower surface of the flexible display screen 310.
  • the spacer layer 350 is located between the two buffer layers 360.
  • the above-mentioned adhesive layer may be, for example, an optically clear adhesive (OCA), a transparent glue, or a transparent adhesive film.
  • OCA optically clear adhesive
  • the upper surface of the buffer layer 360 is glued to the lower surface of the flexible display screen 310, and the lower surface of the buffer layer 360 is glued to the upper surface of the support structure 320, such as the upper surface of the protrusion of the boss structure.
  • the buffer layer 360 should be in a suitable range to cushion the pressing force of the finger on the flexible display 310. Therefore, the buffer layer 360 can be made of transparent soft film materials such as plastic, silica gel, and glue film, such as polyurethane (Thermoplastic Polyurethanes, TPU), Polyimide (PI) or Polyethylene Terephthalate (PET) and other materials.
  • transparent soft film materials such as plastic, silica gel, and glue film, such as polyurethane (Thermoplastic Polyurethanes, TPU), Polyimide (PI) or Polyethylene Terephthalate (PET) and other materials.
  • glue film such as polyurethane (Thermoplastic Polyurethanes, TPU), Polyimide (PI) or Polyethylene Terephthalate (PET) and other materials.
  • the buffer layer 360 can not only cushion the pressing force of the finger on the flexible display 310, but also indirectly adjust the gap between the support structure 320 and the flexible display 310 by adjusting the thickness of the buffer layer 360. 350 size.
  • the buffer layer 330 fixed on the lower surface of the flexible display screen 310 also strengthens the flexible display screen 310 to a certain extent.
  • the buffer layer 360 may be one or more layers of transparent film materials.
  • the buffer layer 360 can be a single material layer; it can also be a composite material layer, that is, composed of multiple material layers.
  • the buffer layer 360 includes an OCA adhesive layer, a PET layer, and an OCA adhesive layer from top to bottom.
  • the implementation of this application provides two implementation manners of the support structure 320.
  • the support structure 320 is a boss structure.
  • the protrusion of the boss structure is located in the light-transmitting area under the flexible display screen 310.
  • the protrusion is located below the foam layer 311 of the flexible display screen 310.
  • the edge of the protrusion and the foam layer 311 are connected by an adhesive material such as foam or glue layer.
  • the non-protruding portion of the boss structure is located outside the light-transmitting area under the flexible display screen 310.
  • the non-protruding part is located below the middle frame 340 or below the metal sheet 370.
  • the upper surface of the non-protruding portion is pasted to the lower surface of the middle frame 340 or the metal sheet 370 through an adhesive layer.
  • the above-mentioned glue layer may be, for example, foam, OCA, glue or film.
  • the convex part of the boss structure extends into the light-transmitting area under the flexible display screen 310, for example, is connected to the lower surface of the foam layer 311 that comes with the flexible display screen; and the non-convex part of the boss structure
  • the raised portion is located outside the light-transmitting area, for example, is connected to the lower surface of the middle frame 340 or the metal sheet 370.
  • the support structure 320 is filled in the light-transmitting area to The portion of the flexible display screen 310 in the fingerprint detection area 312 is supported, so that when a finger is pressed in the fingerprint detection area 312 for fingerprint recognition, the flexible display screen 310 will not be significantly deformed.
  • the supporting structure 320 in this implementation will be described below with reference to FIGS. 5 to 9.
  • FIG. 5 shows the flexible display screen 310, the supporting structure 320, the buffer layer 360, the metal sheet 370, the middle frame 340 and the optical fingerprint module 330.
  • the buffer layer 360 is a transparent soft film material, which is fixed on the lower surface of the flexible display screen 310.
  • a metal sheet 370 is pasted under the foam layer 311 of the flexible display screen 310.
  • the metal sheet 370 and the middle frame 340 are connected by a foam 341, where the foam 341 functions as a connection and buffer, and it can also be replaced with glue, film and other adhesive materials.
  • the support structure 320 is a boss structure, the boss of the boss structure is upward, the boss extends into the light-transmitting area under the flexible display 310, and the non-protruding part of the boss structure is located in the light-transmitting area outer.
  • the raised portion of the boss structure is located below the foam layer 311, and the edge of the raised portion is fixed to the edge of the light-transmitting window of the foam layer 311 through the foam 321, wherein the foam layer 311 is flexible The foam layer that comes with the display 310.
  • the non-protruding part of the boss structure is located under the middle frame 340, and the non-protruding part is fixed to the edge of the light-transmitting window of the middle frame 340 by an adhesive layer 321, wherein the adhesive layer 321 may be an adhesive film or glue, etc. Paste the material.
  • the boss structure is snapped into the light-transmitting area under the flexible display 310.
  • the thickness of the spacer layer 350 can be adjusted indirectly by adjusting the thickness of the adhesive layer 321 and/or the buffer layer 360, so as to find the best imaging position of the optical fingerprint module 330 so that the optical fingerprint fixed on the lower surface of the boss structure
  • the fingerprint module 330 achieves an optimal fingerprint recognition effect.
  • the vertical position of the boss structure can be adjusted by adjusting the thickness of the adhesive layer 321, the processing and installation errors of the various laminates such as the middle frame 340 and the metal sheet 370 can be absorbed.
  • the supporting structure 320 decouples the optical fingerprint module 330 and the flexible display 310, and can replace the optical fingerprint module 330 without damaging the flexible display 310. And maintenance.
  • FIG. 6 shows the various components of the fingerprint recognition device in FIG. 5, in which adhesive is present in the opening area on the lower surface of the flexible display screen 310, and the opening area is the foam layer 311 and The opening area formed by the light-transmitting window of the metal sheet 370 or the like, and the adhesive is used to stick the buffer layer 360.
  • the buffer layer 360 is pasted on the inner area of the opening through the adhesive.
  • the middle frame 340 is fixed on the lower surface of the flexible display screen 310, and the position of the light-transmitting window of the middle frame 340 is the same as the position of the opening area on the lower surface of the flexible display screen 310.
  • the transparent boss structure 320 is buckled into the transparent window of the middle frame 340.
  • the optical fingerprint module 330 is fixed on the lower surface of the middle frame.
  • FIG. 7 shows the flexible display screen 310, the supporting structure 320, the metal sheet 370, the middle frame 340 and the optical fingerprint module 330.
  • the buffer layer 360 is not provided in FIG. 7.
  • a metal sheet 370 is pasted under the foam layer 311 of the flexible display screen 310.
  • the metal sheet 370 and the middle frame 340 are connected by a foam 341, where the foam 341 functions as a connection and buffer, and it can also be replaced with glue, film and other adhesive materials.
  • the supporting structure 320 is a boss structure.
  • the protruding part of the boss structure is upward, the protruding part extends into the light-transmitting area under the flexible display screen 310, and the non-protruding part of the boss structure is located outside the light-transmitting area.
  • the edge of the raised portion of the boss structure is connected to the lower surface of the flexible display screen 310 through a foam 321, where the foam 321 functions as a connection and buffer.
  • the non-protruding part of the boss structure is located under the middle frame 340, and the non-protruding part is fixed to the edge of the light-transmitting window of the middle frame 340 by an adhesive layer 321, wherein the adhesive layer 321 may be an adhesive film or glue, etc. Paste the material.
  • the boss structure is snapped into the light-transmitting area under the flexible display 310.
  • the thickness of the spacer layer 350 can be adjusted indirectly by adjusting the thickness of the adhesive layer 321, so as to find the best imaging position of the optical fingerprint module 330, so that the optical fingerprint module 330 fixed on the lower surface of the boss structure is optimized Fingerprint recognition effect.
  • the vertical position of the boss structure can be adjusted by adjusting the thickness of the adhesive layer 321, the processing and installation errors of the various laminates such as the middle frame 340 and the metal sheet 370 can be absorbed.
  • the supporting structure 320 decouples the optical fingerprint module 330 from the flexible display 310, and can replace the optical fingerprint module 330 without damaging the flexible display 310. And maintenance.
  • the spacer layer 350 shown in FIGS. 5 and 7 is an air spacer layer.
  • the embodiment of the present application is not limited to this, and the spacer layer 350 capable of realizing optical signal transmission should fall within the protection scope of the present application.
  • the spacer layer 350 in FIG. 6 can be replaced with the spacer layer 350 shown in FIG. 8(a).
  • the supporting structure 320 is a boss structure, and the protrusion is upward.
  • a plurality of through holes are provided on the spacer layer 350 located above the boss structure, and these through holes can be used to transmit optical signals. Therefore, the spacer layer 350 can not only keep a proper distance between the optical fingerprint module 330 and the flexible display 310 to meet the imaging requirements of the optical fingerprint module 330, but also ensure the reflection or scattering of the finger above the flexible display 310 The optical signal can be smoothly transmitted to the optical fingerprint module 330 through these through holes.
  • the embodiment of the present application does not limit the shape and position of the through holes on the spacer layer 350.
  • the 4 through holes can be arranged side by side or evenly arranged in two vertical directions.
  • the spacer layer 350 adopts this design, it is particularly suitable for the case where the optical fingerprint module 330 uses multiple optical fingerprint sensors to splice. Because when multiple optical fingerprint sensors are spliced together, the area of the fingerprint detection area of the optical fingerprint module 330 will increase, and the lateral area of the light-transmitting area under the flexible display 310 will also increase. The non-through hole area of the spacer layer 350 can support the flexible display screen 310 in the large fingerprint collection area.
  • buffer layer 360 shown in FIG. 9 can also be removed to obtain the fingerprint recognition device shown in FIG. 10.
  • the boss structure can be a single body, for example, the boss structure is made of a transparent material integrally molded; the boss structure can also be a component, that is, the boss structure is formed by combining different materials, for example, the boss of the boss structure The portion and the non-protruding portion may be made of different materials.
  • the convex part of the boss structure is formed of cured glue, and the non-convex part of the boss structure is a transparent flat plate pasted under the convex part .
  • the protrusions are formed by filling the glue before curing into the light-transmitting window of the metal sheet 370 and curing it.
  • the glue can be, for example, a curing glue, such as a thermosetting glue or an ultraviolet curing (Ultraviolet, UV) glue.
  • a curing glue such as a thermosetting glue or an ultraviolet curing (Ultraviolet, UV) glue.
  • the transparent flat plate can be made of, for example, transparent glass or transparent resin.
  • the above-mentioned boss structure formed of different materials can be manufactured by the method shown in FIG. 11, for example.
  • Fig. 11 is a schematic flow chart of a manufacturing method of a supporting structure, wherein the supporting structure is the aforementioned boss structure. As shown in FIG. 11, the method 1100 includes:
  • the metal sheet 370 is placed horizontally on one side of the auxiliary flat plate 380, wherein the auxiliary flat plate 380 covers the light transmission window of the metal sheet 370.
  • glue 322 in a liquid state is spotted on the part of the auxiliary plate 380 located in the light-transmitting window.
  • the transparent plate 323 is covered on the light-transmitting window from the other side of the auxiliary plate 380, so that the glue 322 in a liquid state fills the light-transmitting window.
  • the glue 322 in the liquid state is cured to obtain the boss structure.
  • the convex part of the boss structure is cured glue 322, and the non-convex part of the boss structure is a transparent flat plate 323.
  • FIGS. 12 and 13 are examples.
  • FIG. 12 shows a top view of the metal sheet 370.
  • a light-transmitting window is provided on the metal sheet, and the light-transmitting window is located in the light-transmitting area under the flexible display screen 310 and is used to transmit light signals for fingerprint recognition.
  • the light-transmitting window can be of any shape. In FIG. 12, the light-transmitting window of the metal sheet is square as an example.
  • FIG. 13 shows the metal sheet 370, the auxiliary plate 380, the glue 322 currently in a liquid state, and the transparent plate 323.
  • the glue 322 is used to form the protrusions of the boss structure
  • the transparent flat plate 323 is used as the non-protrusions of the boss structure.
  • the auxiliary plate 380 may be, for example, a non-adhesive plate or film, such as a glass plate with silicone oil.
  • the auxiliary flat plate 380 is placed on one side of the metal sheet 370 and covers the light transmission window of the metal sheet 370.
  • the glue is dispensed in the light-transmitting window of the metal sheet 370, that is, the glue 322 is spotted on the position of the auxiliary plate 380 in the light-transmitting window.
  • the dispensing amount of the glue 322 should be such that the glue 322 can at least fill the light-transmitting window.
  • the transparent flat plate 323 is covered on the light-transmitting window from the other side of the metal sheet 370, so that the glue 322 naturally fills the light-transmitting window of the metal sheet 370 and the space between the metal sheet 370 and the transparent flat 323. gap.
  • the glue 322 is cured, and the auxiliary plate 380 is removed, so as to obtain the boss structure embedded in the light-transmitting window of the metal sheet 370 as shown in FIG. 14, for example.
  • the glue between the transparent flat plate 323 and the metal sheet 370 is very thin, which is not shown here.
  • the auxiliary plate 380 shown in FIG. 13 is usually placed at the bottom layer, the metal sheet 370 is placed above the auxiliary plate 380, and the glue 322 is clicked into the auxiliary plate 380 from above.
  • the transparent flat plate 323 is covered on the light-transmitting window of the metal sheet 370 from top to bottom, so that the glue 322 fills the light-transmitting window.
  • connection between the transparent plate 323 and the raised portion, that is, the cured glue 322 can also be realized by transparent glue or a transparent glue film such as OCA.
  • the thickness of the protrusion of the boss structure is the same as the thickness of the metal sheet 370.
  • the height of the upper surface of the raised portion of the boss structure and the upper surface of the metal sheet 370 are the same.
  • the protrusions and the upper surface of the metal sheet 370 are covered with an overflow glue layer 3221 formed by the glue 322 before curing overflowing the transparent window of the metal sheet 370.
  • the thickness of the overflow adhesive layer 3221 is small and can reach the micron level.
  • the raised portion of the boss structure that is, the upper surface of the cured glue 322, and the upper surface of the metal sheet 370, can receive a small amount of glue overflow. Therefore, it is ensured that there is no step difference between the overflow adhesive layer 3221 and the metal sheet 370. Due to the small thickness, the overflow adhesive layer 3221 is not shown in FIG. 14.
  • the overflow adhesive layer 3221 may have an irregular shape.
  • the overflow glue layer 3221 realizes the transition from the upper surface of the convex portion of the boss structure to the upper surface of the metal sheet 370, so the step difference between the boss structure and the metal sheet 370 can be further eliminated, and the The user experiences and protects the flexible display 310.
  • step difference between the overflow glue layer 3221 and the metal sheet 370 can also be reduced or eliminated by grinding and polishing, which is not limited here.
  • Figs. 16 and 17 show a fingerprint recognition device using the boss structure.
  • the flexible display screen 310, the supporting structure 320, the metal sheet 370 and the optical fingerprint module 330 are shown.
  • the lower surface of the flexible display screen 310 is provided with a transparent film 313.
  • the transparent film 313 may be, for example, an OCA glue layer or a composite layer such as an OCA glue layer, a PET layer, and an OCA glue layer.
  • the metal sheet 370 is fixed on the lower surface of the transparent film 313.
  • the support structure 320 includes a raised portion embedded in the light-transmitting window of the metal sheet 370, that is, cured glue 322, and a non-protruding portion, that is, a transparent flat plate 323 located under the metal sheet 370.
  • the optical fingerprint module 330 is pasted on the lower surface of the transparent flat plate 323.
  • a flexible display screen 310 As shown in FIG. 17 again, a flexible display screen 310, a supporting structure 320, a buffer layer 360, a metal sheet 370 and an optical fingerprint module 330 are shown.
  • the lower surface of the flexible display screen 310 is provided with a foam layer 311, and the metal sheet 370 is fixed on the lower surface of the foam layer 311.
  • the support structure 320 includes a raised portion embedded in the light-transmitting window of the metal sheet 370, that is, cured glue 322, and a non-protruding portion, that is, a transparent flat plate 323 located under the metal sheet 370.
  • the upper surface of the buffer layer 360 is pasted on the lower surface of the flexible display screen 310, and the lower surface is bonded to the upper surface of the protrusion of the boss structure.
  • the optical fingerprint module 330 is pasted on the lower surface of the transparent flat plate 323.
  • a plurality of through holes are provided on the support structure 320, and the plurality of through holes are used to transmit optical signals.
  • the support structure 320 may be a support layer provided with multiple through holes, such as a foam layer or a metal layer provided with multiple through holes.
  • a flexible display screen 310, a supporting structure 320, a buffer layer 360, a metal sheet 370, a middle frame 340 and an optical fingerprint module 330 are shown.
  • a metal sheet 370 is pasted under the foam layer 311 of the flexible display screen 310.
  • the metal sheet 370 and the middle frame 340 are connected by a foam 341, where the foam 341 functions as a connection and buffer, and it can also be replaced with glue, film and other adhesive materials.
  • the buffer layer 360 is a transparent soft film material, which is fixed on the lower surface of the flexible display screen 310.
  • the supporting structure 320 is fixed on the lower surface of the buffer layer 360.
  • the support structure 320 is a support layer provided with a plurality of through holes, and the plurality of through holes are used to transmit light signals reflected from a finger above the flexible display 310.
  • the support structure 320 is located in the light-transmitting area under the flexible display screen 310, specifically, in the light-transmitting window of the middle frame 340.
  • the optical fingerprint module 330 is fixed on the lower surface of the supporting structure 320.
  • the support structure 320 shown in FIG. 18 can also be replaced with a transparent material layer, so as to transmit real image light signals without perforating the support structure 320.
  • the support structure 320 is provided in the light-transmitting area under the flexible display screen 310, so that the support structure 320 can provide a supporting effect for the flexible display screen 310, and reduce the risk of fingers pressing the flexible display screen during the fingerprint recognition process. Deformation to avoid damage to the flexible display.
  • the optical fingerprint module 330 is disposed on the supporting structure 320, the distance between the optical fingerprint module 330 and the flexible display 310 can be flexibly adjusted through the supporting structure 320, thereby improving the performance of fingerprint recognition.
  • the optical fingerprint module 330 and the flexible display screen 310 have been decoupled, it is convenient to disassemble and install the optical fingerprint module 330 and facilitate the maintenance of the optical fingerprint module 330.
  • each paste material located in the light-transmitting area should be a transparent paste material so as not to affect the transmission of optical signals.
  • the buffer layer 360 can be pasted on the lower surface of the flexible display 310 with OCA glue; and
  • the various adhesive materials located on the non-optical path may preferably be other non-transparent adhesive materials to achieve absorption of stray light.
  • the upper surface of the non-protruding portion of the boss structure 320 is made of foam, glue or glue.
  • the film is stuck on the surface of the middle frame 340. Not all pasting materials are shown in FIGS. 4 to 18.
  • An embodiment of the present application also provides an electronic device, which includes a flexible display screen and the fingerprint recognition device in the various embodiments of the present application described above.
  • the electronic device further includes a middle frame.
  • a metal sheet is provided between the flexible display screen and the middle frame.
  • the electronic devices in the embodiments of the present application may be portable or mobile computing devices such as terminal devices, mobile phones, tablet computers, notebook computers, desktop computers, game devices, in-vehicle electronic devices, or wearable smart devices, and Electronic databases, automobiles, bank automated teller machines (Automated Teller Machine, ATM) and other electronic equipment.
  • the wearable smart device includes full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones Use, such as various types of smart bracelets, smart jewelry and other equipment for physical sign monitoring.

Landscapes

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

Abstract

一种指纹识别的装置和电子设备，该指纹识别的装置应用于具有柔性显示屏的电子设备，能够实现柔性显示屏的屏下指纹识别。所述装置包括：所述装置包括：支撑结构，用于至少部分设置在所述柔性显示屏下方的透光区域内，所述支撑结构用于支撑所述柔性显示屏；光学指纹模组，用于设置在所述支撑结构上，所述光学指纹模组用于采集经由所述柔性显示屏上方的手指反射或散射并从所述透光区域传输过来的光信号。

Description

指纹识别的装置和电子设备 技术领域
本申请实施例涉及生物特征识别领域，并且更具体地，涉及一种指纹识别的装置和电子设备。
背景技术
光学屏下指纹识别技术是通过光学指纹模组采集光源发出的光线在显示屏上方的手指上发生反射形成的反射光，反射光中携带手指的指纹信息，从而实现屏下指纹识别。对于采用柔性显示屏的电子设备，当手指按压在柔性显示屏上进行指纹识别时，由于柔性显示屏的材料柔软，因此在手指按压区域可能会发生变形，不仅影响用户体验，还影响光学指纹模组的指纹识别性能，甚至可能造成柔性显示屏和光学指纹模组的受损。
发明内容
本申请实施例提供一种指纹识别的装置和电子设备，能够实现柔性显示屏的屏下指纹识别。
第一方面，提供了一种指纹识别装置，应用于具有柔性显示屏的电子设备，所述装置包括：
支撑结构，用于至少部分设置在所述柔性显示屏下方的透光区域内，所述支撑结构用于支撑所述柔性显示屏；
光学指纹模组，用于设置在所述支撑结构上，所述光学指纹模组用于采集经由所述柔性显示屏上方的手指反射或散射并从所述透光区域传输过来的光信号。
在一种可能的实现方式中，所述支撑结构为凸台结构，所述凸台结构的凸起部位于所述透光区域内。
在一种可能的实现方式中，所述凸起部位于所述柔性显示屏的泡棉层的下方。
在一种可能的实现方式中，所述凸起部的边缘与所述柔性显示屏的泡棉层之间通过泡棉或者胶膜连接。
在一种可能的实现方式中，所述凸台结构的非凸起部位于所述电子设备 的中框的下方。
在一种可能的实现方式中，所述非凸起部的上表面通过胶水或胶膜粘贴于所述中框的下表面。
在一种可能的实现方式中，所述柔性显示屏与所述电子设备的中框之间设置有金属片材，所述金属片材上设置有透光窗口，所述透光窗口位于所述透光区域，其中，所述非凸起部位于所述金属片材的下方。
在一种可能的实现方式中，所述非凸起部的上表面通过胶水或胶膜粘贴于所述金属片材的下表面。
在一种可能的实现方式中，所述凸起部由固化的胶水形成，所述非凸起部为粘贴于所述凸起部下方的透明平板。
在一种可能的实现方式中，所述凸起部通过将固化前的所述胶水填充于所述金属片材的透光窗口内部并经过固化以形成。
在一种可能的实现方式中，所述凸起部的上表面与所述金属片材的上表面的高度相同。
在一种可能的实现方式中，所述凸起部和所述金属片材的上表面覆盖有固化前的所述胶水溢出所述金属片材的透光窗口所形成的溢出胶层。
在一种可能的实现方式中，所述胶水为紫外线固化UV胶。
在一种可能的实现方式中，所述凸台结构由透明材料一体制成。
在一种可能的实现方式中，所述透明材料为透明玻璃或者树脂。
在一种可能的实现方式中，所述柔性显示屏与所述支撑结构之间存在间隔层。
在一种可能的实现方式中，所述间隔层为空气间隔层。
在一种可能的实现方式中，所述间隔层上设置有至少一个通孔，所述至少一个通孔用于传输所述光信号。
在一种可能的实现方式中，所述间隔层为泡棉层或者金属层。
在一种可能的实现方式中，所述支撑结构上设置有多个通孔，所述多个通孔用于传输所述光信号。
在一种可能的实现方式中，所述支撑结构为泡棉层或者金属层。
在一种可能的实现方式中，所述装置还包括：缓冲层，用于设置在所述柔性显示屏与所述支撑结构之间。
在一种可能的实现方式中，所述缓冲层固定在所述柔性显示屏的下表面。
在一种可能的实现方式中，所述间隔层位于所述缓冲层与所述支撑结构之间。
在一种可能的实现方式中，所述缓冲层固定在所述支撑结构的上表面。
在一种可能的实现方式中，所述间隔层位于所述缓冲层与所述柔性显示屏之间。
在一种可能的实现方式中，所述缓冲层的上表面粘贴于所述柔性显示屏的下表面，所述缓冲层的下表面粘贴于所述凸台结构的凸起部的上表面。
在一种可能的实现方式中，所述缓冲层包括一层或多层透明膜材。
在一种可能的实现方式中，所述光学指纹模组固定在所述支撑结构的下表面。
第二方面，提供了一种支撑结构的制作方法，所述支撑结构用于支撑电子设备的柔性显示屏，所述支撑结构为凸台结构，所述方法包括：
将用于设置在所述柔性显示屏下方的金属片材，水平放置在辅助平板的一侧上，其中，所述辅助平板覆盖所述金属片材的透光窗口；
在所述辅助平板上的位于所述透光窗口内的部分点入液体状态的胶水；
将透明平板从所述辅助平板的另一侧覆盖至所述透光窗口上，以使液体状态的所述胶水充满所述透光窗口；
对液体状态的所述胶水进行固化，得到所述凸台结构，其中，所述凸台结构的凸起部为固化后的所述胶水，所述凸台结构的非凸起部为所述透明平板。
在一种可能的实现方式中所述凸起部的上表面与所述金属片材的上表面的高度相同。
在一种可能的实现方式中所述凸起部和所述金属片材的上表面覆盖有固化前的所述胶水溢出所述金属片材的透光窗口所形成的溢出胶层。
在一种可能的实现方式中所述胶水为固化胶例如热固胶或者UV胶。
在一种可能的实现方式中所述透明平板由透明玻璃或者透明树脂制成。
第二方面，提供了一种终端设备，包括：
柔性显示屏；以及，第一方面或第一方面的任意可能的实现方式中的指纹识别的装置。
在一种可能的实现方式中，所述电子设备还包括中框。
在一种可能的实现方式中，所述柔性显示屏与所述中框之间设置有金属 片材。
基于上述技术方案，通过在柔性显示屏下方的透光区域内设置支撑结构，使得支撑结构能够为柔性显示屏提供支撑作用，减小指纹识别过程中手指按压柔性显示屏导致的变形，避免对柔性显示屏的损伤。并且，由于光学指纹模组设置在支撑结构上，因此可以通过支撑结构灵活地调整光学指纹模组与柔性显示屏之间的距离，提高指纹识别的性能。另外，由于光学指纹模组与柔性显示屏之间已经解耦，便于光学指纹模组的拆卸和安装，有利于光学指纹模组的维修。
附图说明
图1是本申请可以适用的电子设备的结构示意图。
图2是图1所示的电子设备沿A-A’方向的剖面示意图。
图3是本申请实施例的指纹识别的装置的示意性框图。
图4是本申请实施例的指纹识别的装置的一种可能的结构示意图。
图5是本申请实施例的指纹识别的装置的一种可能的结构示意图。
图6是图5中的指纹识别的装置的各个组件的示意图。
图7本申请实施例的指纹识别装置的一种可能的结构示意图。
图8(a)至图8(c)是本申请实施例的缓冲层的示意图。
图9是本申请实施例的指纹识别装置的一种可能的结构示意图。
图10是本申请实施例的指纹识别装置的一种可能的结构示意图。
图11是本申请实施例的支撑结构的制作方法的示意性流程图。
图12是本申请实施例的金属片材的俯视图。
图13是使用于图11所示的方法制作凸台结构的示意图。
图14是基于图11所示的方法制作的凸台结构的示意图。
图15是溢出胶层的示意图。
图16是本申请实施例的指纹识别装置的一种可能的结构示意图。
图17是本申请实施例的指纹识别装置的一种可能的结构示意图。
图18是本申请实施例的指纹识别装置的一种可能的结构示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
应理解，本申请实施例可以应用于光学指纹系统，包括但不限于光学指纹识别系统和基于光学指纹成像的医疗诊断产品，本申请实施例仅以光学指纹系统为例进行说明，但不应对本申请实施例构成任何限定，本申请实施例同样适用于其他采用光学成像技术的系统等。
作为一种常见的应用场景，本申请实施例提供的光学指纹系统可以应用在智能手机、平板电脑以及其他具有显示屏的移动终端或者其他终端设备；更具体地，在上述终端设备中，光学指纹模组可以具体为光学指纹模组，其可以设置在显示屏下方的局部区域或者全部区域，从而形成屏下(Under-display或Under-screen)光学指纹系统。或者，所述光学指纹模组也可以部分或者全部集成至所述终端设备的显示屏内部，从而形成屏内(In-display或In-screen)光学指纹系统。
图1和图2示出了本申请实施例可以适用的电子设备的示意图。其中，图1为电子设备10的示意图，图2为图1所示的电子设备10沿A-A’方向的部分剖面示意图。
所述终端设备10包括显示屏120和光学指纹模组130。其中，所述光学指纹模组130设置在所述显示屏120下方的局部区域。所述光学指纹模组130包括光学指纹传感器，所述光学指纹传感器包括具有多个光学感应单元131的感应阵列133。所述感应阵列133所在区域或者其感应区域为所述光学指纹模组130的指纹检测区域121(也称为指纹采集区域、指纹识别区域等)。如图1所示，所述指纹检测区域121位于所述显示屏120的显示区域之中。在一种替代实施例中，所述光学指纹模组130还可以设置在其他位置，比如所述显示屏120的侧面或者所述终端设备10的边缘非透光区域，并通过光路设计来将来自所述显示屏120的至少部分显示区域的光信号导引到所述光学指纹模组130，从而使得所述指纹检测区域121实际上位于所述显示屏120的显示区域。
应当理解，所述指纹检测区域121的面积可以与所述光学指纹模组130的感应阵列133的面积不同，例如通过例如透镜成像的光路设计、反射式折叠光路设计或者其他光线汇聚或者反射等光路设计，可以使得所述光学指纹模组130的指纹检测区域121的面积大于所述光学指纹模组130的感应阵列133的面积。在其他替代实现方式中，如果采用例如光线准直方式进行光路引导，所述光学指纹模组130的指纹检测区域121也可以设计成与所述光学 指纹模组130的感应阵列的面积基本一致。
因此，使用者在需要对所述终端设备进行解锁或者其他指纹验证的时候，只需要将手指按压在位于所述显示屏120的指纹检测区域121，便可以实现指纹输入。由于指纹检测可以在屏内实现，因此采用上述结构的终端设备10无需其正面专门预留空间来设置指纹按键(比如Home键)，从而可以采用全面屏方案，即所述显示屏120的显示区域可以基本扩展到整个终端设备10的正面。
作为一种可选的实现方式，如图1所示，所述光学指纹模组130包括光检测部分134和光学组件132。所述光检测部分134包括所述感应阵列133以及与所述感应阵列133电性连接的读取电路及其他辅助电路，其可以在通过半导体工艺制作在一个芯片(Die)上，比如光学成像芯片或者光学指纹传感器。所述感应阵列133具体为光探测器(Photodetector)阵列，其包括多个呈阵列式分布的光探测器，所述光探测器可以作为如上所述的光学感应单元。所述光学组件132可以设置在所述光检测部分134的感应阵列133的上方，其可以具体包括滤光层(Filter)、导光层或光路引导结构、以及其他光学元件，所述滤光层可以用于滤除穿透手指的环境光，而所述导光层或光路引导结构主要用于从手指表面反射回来的反射光导引至所述感应阵列133进行光学检测。
在具体实现上，所述光学组件132可以与所述光检测部分134封装在同一个光学指纹部件。比如，所述光学组件132可以与所述光学检测部分134封装在同一个光学指纹芯片，也可以将所述光学组件132设置在所述光检测部分134所在的芯片外部，比如将所述光学组件132贴合在所述芯片上方，或者将所述光学组件132的部分元件集成在上述芯片之中。
其中，所述光学组件132的导光层或者光路引导结构有多种实现方案，比如，所述导光层可以具体为在半导体硅片制作而成的准直器(Collimator)层，其具有多个准直单元或者微孔阵列，所述准直单元可以具体为小孔，从手指反射回来的反射光中，垂直入射到所述准直单元的光线可以穿过并被其下方的光学感应单元接收，而入射角度过大的光线在所述准直单元内部经过多次反射被衰减掉，因此每一个光学感应单元基本只能接收到其正上方的指纹纹路反射回来的反射光，从而所述感应阵列133便可以检测出手指的指纹图像。
在另一种实施例中，所述导光层或者光路引导结构也可以为光学透镜(Lens)层，其具有一个或多个透镜单元，比如一个或多个非球面透镜组成的透镜组，其用于将从手指反射回来的反射光汇聚到其下方的光检测部分134的感应阵列133，以使得所述感应阵列133可以基于所述反射光进行成像，从而得到所述手指的指纹图像。可选地，所述光学透镜层在所述透镜单元的光路中还可以形成有针孔，所述针孔可以配合所述光学透镜层扩大所述光学指纹模组130的视场，以提高所述光学指纹模组130的指纹成像效果。
在其他实施例中，所述导光层或者光路引导结构也可以具体采用微透镜(Micro-Lens)层，所述微透镜层具有由多个微透镜形成的微透镜阵列，其可以通过半导体生长工艺或者其他工艺形成在所述光检测部分134的感应阵列133上方，并且每一个微透镜可以分别对应于所述感应阵列133的其中一个感应单元。并且，所述微透镜层和所述感应单元之间还可以形成其他光学膜层，比如介质层或者钝化层。更具体地，所述微透镜层和所述感应单元之间还可以包括具有微孔的挡光层(或称为遮光层)，其中所述微孔形成在其对应的微透镜和感应单元之间，所述挡光层可以阻挡相邻微透镜和感应单元之间的光学干扰，并使得所述感应单元所对应的光线通过所述微透镜汇聚到所述微孔内部并经由所述微孔传输到所述感应单元以进行光学指纹成像。
应当理解，上述导光层或者光路引导结构的几种实现方案可以单独使用也可以结合使用。比如，可以在所述准直器层或者所述光学透镜层的上方或下方进一步设置微透镜层。当然，在所述准直器层或者所述光学透镜层与所述微透镜层结合使用时，其具体叠层结构或者光路可能需要按照实际需要进行调整。
作为一种可选的实施方式，所述显示屏120可以采用具有自发光显示单元的显示屏，比如有机发光二极管(Organic Light-Emitting Diode，OLED)显示屏或者微型发光二极管(Micro-LED)显示屏。以采用OLED显示屏为例，所述光学指纹模组130可以利用所述OLED显示屏120位于所述指纹检测区域121的显示单元(即OLED光源)作为光学指纹检测的激励光源。当手指140按压在所述指纹检测区域121时，显示屏120向所述指纹检测区域121上方的目标手指140发出一束光111，该光111在手指140的表面发生反射形成反射光或者经过所述手指140内部散射而形成散射光。在相关专利申请中，为便于描述，上述反射光和散射光统称为反射光。由于指纹的脊 (ridge)141与谷(valley)142对于光的反射能力不同，因此，来自指纹脊的反射光151和来自指纹谷的反射光152具有不同的光强，反射光经过光学组件132后，被光学指纹模组130中的感应阵列133所接收并转换为相应的电信号，即指纹检测信号；基于所述指纹检测信号便可以获得指纹图像数据，并且可以进一步进行指纹匹配验证，从而在终端设备10实现光学指纹识别功能。
在其他实施例中，所述光学指纹模组130也可以采用内置光源或者外置光源来提供用于进行指纹检测的光信号。在这种情况下，所述光学指纹模组130可以适用于非自发光显示屏，比如液晶显示屏或者其他的被动发光显示屏。以应用在具有背光模组和液晶面板的液晶显示屏为例，为支持液晶显示屏的屏下指纹检测，所述终端设备10的光学指纹系统还可以包括用于光学指纹检测的激励光源，所述激励光源可以具体为红外光源或者特定波长非可见光的光源，其可以设置在所述液晶显示屏的背光模组下方或者设置在所述终端设备10的保护盖板下方的边缘区域，而所述光学指纹模组130可以设置液晶面板或者保护盖板的边缘区域下方并通过光路引导以使得指纹检测光可以到达所述光学指纹模组130；或者，所述光学指纹模组130也可以设置在所述背光模组下方，且所述背光模组通过对扩散片、增亮片、反射片等膜层进行开孔或者其他光学设计以允许指纹检测光穿过液晶面板和背光模组并到达所述光学指纹模组130。当采用所述光学指纹模组130采用内置光源或者外置光源来提供用于进行指纹检测的光信号时，其检测原理与上面描述内容是一致的。
应当理解的是，在具体实现上，所述终端设备10还包括透明保护盖板，所述盖板可以为玻璃盖板或者蓝宝石盖板，其位于所述显示屏120的上方并覆盖所述终端设备10的正面。因此，本申请实施例中，所谓的手指按压在所述显示屏120实际上是指按压在所述显示屏120上方的盖板或者覆盖所述盖板的保护层表面。
另一方面，在某些实施例中，所述光学指纹模组130可以仅包括一个光学指纹传感器，此时光学指纹模组130的指纹检测区域121的面积较小且位置固定，因此用户在进行指纹输入时需要将手指按压到所述指纹检测区域121的特定位置，否则光学指纹模组130可能无法采集到指纹图像而造成用户体验不佳。在其他替代实施例中，所述光学指纹模组130可以具体包括多 个光学指纹传感器。所述多个光学指纹传感器可以通过拼接方式并排设置在所述显示屏120的下方，且所述多个光学指纹传感器的感应区域共同构成所述光学指纹模组130的指纹检测区域121。也就是说，所述光学指纹模组130的指纹检测区域121可以包括多个子区域，每个子区域分别对应于其中一个光学指纹传感器的感应区域，从而将所述光学指纹模组130的指纹检测区域121可以扩展到所述显示屏的下半部分的主要区域，即扩展到手指惯常按压区域，从而实现盲按式指纹输入操作。可替代地，当所述光学指纹传感器数量足够时，所述指纹检测区域121还可以扩展到半个显示区域甚至整个显示区域，从而实现半屏或者全屏指纹检测。
本申请实施例中，所述显示屏120可以为柔性显示屏，或称折叠显示屏。例如，所述显示屏120可以采用塑料或金属等柔性材料制备。
如图1所示的显示屏120为外翻式折叠显示屏，显示屏120的显示区域在显示屏120的外侧。但本申请实施例也适用于内翻式折叠显示屏，这时，显示屏120的显示区域可以在显示屏120的内侧。
显示屏120为柔性显示屏时，其上方的透明保护盖板可以为柔性盖板，用于保护该显示屏120。该柔性盖板的材料例如可以为聚酰亚胺树脂薄膜(Polyimide Film，PI)等柔性材料。柔性盖板无法给显示屏120提供支撑作用，在此情况下，用户按压显示屏120时，由于显示屏120的材料较为柔软，显示屏120在按压区域内的部分会发生变形，不仅影响用户体验，还可能影响光学指纹模组的指纹识别性能，甚至可能造成柔性显示屏120和光学指纹模组的损伤。
有鉴于此，本申请实施例提出一种指纹识别的装置，能够实现柔性显示屏的屏下指纹识别。
图3是本申请实施例的指纹识别的装置300的示意图。该指纹识别的装置300应用于具有柔性显示屏310的电子设备。其中，该指纹识别的装置300包括支撑结构320和光学指纹模组330。
支撑结构320用于至少部分设置在所述柔性显示屏310下方的透光区域内，所述支撑结构320用于支撑所述柔性显示屏310。
光学指纹模组330用于设置在所述支撑结构320上，所述光学指纹模组330用于采集经由所述柔性显示屏310上方的手指反射或散射并从所述透光区域传输过来的光信号。
该透光区域可以理解为用于传输用于指纹识别的光信号的区域，即指纹识别过程中的光线所经过的区域。
由于在柔性显示屏310和光学指纹模组330之间设置了支撑结构320，在进行指纹识别时，柔性显示屏310在手指按压区域内的部分会因支撑结构320的支撑而不会发生严重的变形，从而提升了用户体验，避免了对光学指纹模组330的指纹识别性能的影响。
柔性显示屏310例如可以是柔性LCD显示屏或者柔性OLED显示屏。其中，该柔性OLED显示屏的发光层可以包括多个有机发光二极管光源，光学指纹模组330可以采用其中的至少部分有机发光二极管光源作为指纹识别的激励光源。
柔性显示屏310可以对应于图1和图2中所示的显示屏120。例如，柔性显示屏310可以包括以下中的至少一种：柔性盖板玻璃、触摸控制层、偏光片、OLED发光层、泡棉层、显示器遮光散热缓冲层、金属层、各种胶层例如OCA或者PET等。其相关说明可以参考前述关于显示屏120的描述，为了简洁，这里不再赘述。
光学指纹模组330可以对应于图1和图2中的光学指纹模组130。光学指纹模组330可以包括光学组件和光学指纹传感器。其中，该光学组件用于将该光信号引导至该光学指纹传感器，该光学指纹传感器用于根据采集到的该光信号获取该手指的指纹信息。
该光学组件包括光学滤波器、光路调制器等光学元件。其中，该光路调制器例如可以由准直孔阵列组成，或者由至少一个透镜组成，或者由微透镜阵列组成。此外，光学指纹模组330还可以包括柔性电路板等。
光学指纹模组330的指纹检测区域至少部分位于柔性显示屏310的显示区域内，该指纹检测区域下方为透光区域，该透光区域用于光线传输。其中，经指纹检测区域上的手指反射或散射的光信号经过该透光区域到达光学指纹模组330。光学指纹模组330根据采集到的该光信号进行指纹识别。支撑结构320具体可以用于支撑柔性显示屏310在该指纹检测区域内的部分，以防止柔性显示屏310的位于指纹检测区域内的部分下陷。或者说，支撑结构320用于支撑柔性显示屏310的位于该透光区域上方的部分。
光学指纹模组330的相关说明可以参考前述图1和图2中关于光学指纹模组130的描述，为了简洁，这里不再赘述。
光学指纹模组330可以通过例如胶水、胶膜等材料粘贴在支撑结构320的下表面，例如光学指纹模组330包括由准直孔阵列组成的光路调制器；光学指纹模组330也可以通过指纹模组支架固定在支撑结构320的下表面，例如光学指纹模组330包括由透镜或微透镜组成的光路调制器。此外，光学指纹模组330还可能以其他方式例如机械固定比如螺丝固定等方式固定在支撑结构320上，本申请对此不做限定。
或者，光学指纹模组330也可以固定在中框上。例如光学指纹模组330的边缘粘贴在中框的下表面，或者光学指纹模组330通过其电路板粘贴在中框的下表面，或者中框340的透光窗口的边缘上设置有台阶且光学指纹模组330固定在中框下表面的该台阶结构上。
通常，电子设备的中框340可以用于支撑柔性显示屏310以及固定其他组件。其中，中框340上具有透光窗口，该透光窗口位于指纹检测区域的下方，以便指纹检测区域上方的手指反射或散射的光信号能够通过该透光窗口传输至光学指纹模组330。
由于中框340上还设置有用于固定其他结构和组件的各种孔和槽等，使得中框340无法为柔性显示屏310提供整屏支撑。
这时，可以在电子设备的中框340与柔性显示屏310之间设置金属片材370例如钢片。其中，金属片材370上设置有透光窗口，该透光窗口位于指纹检测区域的下方，用于传输指纹检测区域上方的手指反射或散射的光信号，从而使该光信号可以到达光学指纹模组330。
因此，支撑结构320可以用于支撑柔性显示屏310的位于指纹检测区域内的部分，而金属片材370可以用于支撑柔性显示屏310的位于指纹检测区域之外的部分，从而实现对柔性显示屏310的整屏支撑。
本申请实施例对金属片材370的厚度不做限定，例如可以为0-300微米，或者50-200微米。
金属片材370可以与柔性显示屏310制作在一起，从而作为柔性显示屏310的一部分；也可以与中框340制作在一起，从而作为中框340的一部分，或者作为与柔性显示屏310和中框340相互独立的部件安装在柔性显示屏310和中框340之间。
假设指纹识别的装置300中没有设置支撑结构320，例如图4所示，图4示出了柔性显示屏310、光学指纹模组330和中框340。柔性显示屏310 的泡棉层311与中框340之间通过泡棉层341连接。光学指纹模组330与中框340之间通过泡棉层331连接。其中，且泡棉层341和泡棉层331也可以替换为胶膜、胶水等其他粘贴材料。
本申请实施例中的泡棉层可以认为包括泡棉以及泡棉上下表面的背胶，因此也可以称为泡棉胶，该泡棉层可以起到粘接和缓冲等作用。
图4中所示的泡棉层311的透光窗口和中框340的透光窗口形成上述的用于传输光信号的透光区域。光学指纹模组330位于该透光区域下方。指纹检测区域312上的手指反射或散射的光信号，通过该透光区域传输至光学指纹模组330，光学指纹模组330根据采集到的该光信号进行指纹识别。
由于柔性显示屏310的材料柔软，导致在柔性显示屏310内的指纹检测区域312处形成了明显的段差区域。该段差区域不仅降低了用户体验，而且可能会由于手指按压而对柔性显示屏310造成损伤，并且对光学指纹模组330的指纹识别性能造成影响。
为了实现对柔性显示屏310的支撑，本申请实施例中，在柔性显示屏310下方的透光区域内设置了支撑结构320，用于对该段差区域进行支撑。
支撑结构320应当具有一定的硬度。同时，支撑结构320应当能够用于传输光信号，以便经手指反射或散射的光信号能够传输至光学指纹模组330。
因此，支撑结构320可以是透明的，例如，支撑结构320可以由光学玻璃或光学树脂等透明材料制成。或者，支撑结构320上可以设置多个通孔，且该多个通孔用于传输光信号。
可选地，柔性显示屏310与支撑结构320可以紧贴在一起；或者，优选地，柔性显示屏310与支撑结构320之间存在间隔层350。
例如，间隔层350可以是空气间隔层，即柔性显示屏310与支撑结构320之间存在空气间隙。
又例如，间隔层350可以是泡棉层或者金属层，并且间隔层350上设置有至少一个通孔，从而通过该至少一个通孔传输光信号。相当于在泡棉层或金属层上设置用于传输光信号的通孔。
柔性显示屏310与支撑结构320之间存在的微小的距离时，柔性显示屏310变形所导致的干涉条纹会影响光学指纹模组330的指纹识别性能，通常也称为“水波纹”。而柔性显示屏310与支撑结构320之间的距离过大时，手指按压可能对柔性显示屏310造成损伤。因此，柔性显示屏310与支撑结 构320之间的间隔层350应当具有合适的厚度。
本申请实施例对间隔层350的厚度不做限定，例如可以为100-150微米。
由于光学指纹模组330固定在支撑结构320上，因此可以通过调整支撑结构320在竖直方向上的安装位置，间接地调整光学指纹模组330与柔性显示屏310之间的间隔层350的大小，从而在避免柔性显示屏310变形所产生的干涉条纹的同时，减小柔性显示屏310的变形空间。
可选地，指纹识别的装置300还包括缓冲层360。其中，缓冲层360用于设置在性显示屏310与支撑结构320之间。
例如，缓冲层360可以固定在柔性显示屏310的下表面，比如通过胶层粘贴在柔性显示屏310的下表面。
这时，间隔层350位于缓冲层360与支撑结构320之间。
又例如，缓冲层360固定在支撑结构320的上表面，比如通过胶层粘贴在支撑结构320的上表面。
这时，间隔层350位于缓冲层360与柔性显示屏310之间。
又例如，可以设置两个缓冲层360，其中一个缓冲层360固定在支撑结构320的上表面，另一个缓冲层360固定在柔性显示屏310的下表面。
这时，间隔层350位于两个缓冲层360之间。
上述的胶层例如可以是光学透明胶粘剂(Optically Clear Adhesive，OCA)、透明胶水或透明胶膜等。
又例如，缓冲层360的上表面粘贴于柔性显示屏310的下表面，缓冲层360的下表面粘贴于支撑结构320的上表面，比如凸台结构的凸起部的上表面。
这时，柔性显示屏310与支撑结构320之间不存在间隔层350。由于柔性显示屏310和支撑结构320与两者之间的缓冲层360紧密相贴，因此不存在微小的距离，通常也不会产生干涉条纹。
缓冲层360的硬度应当处于合适的范围，以缓冲手指对柔性显示屏310的按压力，因此缓冲层360可以由塑料、硅胶、胶膜等透明软性膜材制成，例如聚氨酯(Thermoplastic Polyurethanes，TPU)、聚酰亚胺(Polyimide，PI)或者聚酯(Polyethylene Terephthalate，PET)等材料。
这时，缓冲层360不仅可以对手指在柔性显示屏310上的按压力起到缓冲的作用，还可以通过调整缓冲层360的厚度来间接地调整支撑结构320与 柔性显示屏310之间的间隙350的大小。并且，固定在柔性显示屏310下表面的缓冲层330在一定程度上还加固了柔性显示屏310。
缓冲层360可以是一层或多层透明膜材。
即，缓冲层360可以是单一的材料层；也可以是复合材料层，即由多个材料层组成，例如缓冲层360由上至下依次包括OCA胶层、PET层和OCA胶层。
本申请实施提供了支撑结构320的两种实现方式。
在一种实现方式中，支撑结构320为凸台结构。
可选地，该凸台结构的凸起部位于柔性显示屏310下方的透光区域内。
进一步地，可选地，该凸起部位于柔性显示屏310的泡棉层311的下方。例如，该凸起部的边缘与泡棉层311之间通过泡棉或者胶层等粘贴材料连接。
可选地，该凸台结构的非凸起部位于柔性显示屏310下方的透光区域外。
进一步地，可选地，该非凸起部位于中框340的下方，或者位于或者金属片材370的下方。例如，该非凸起部的上表面通过胶层粘贴于中框340或者金属片材370的下表面。
上述的胶层例如可以是泡棉、OCA、胶水或胶膜等。
可以理解，该凸台结构的凸起部伸入柔性显示屏310下方的透光区域内，例如与柔性显示屏自带的泡棉层311的下表面相连接；而该凸台结构的非凸起部位于该透光区域外部，例如与中框340或金属片材370的下表面相连接。
本申请实施例中，由于柔性显示屏310内的指纹检测区域312下方需要设置透光区域以便于传输用于指纹识别的光信号，因此，通过在该透光区域内填充该支撑结构320，以支撑柔性显示屏310在该指纹检测区域312内的部分，从而当手指按压在指纹检测区域312内进行指纹识别时，柔性显示屏310不会发生明显的变形。
下面结合图5至图9描述该实现方式中的支撑结构320。
图5示出了柔性显示屏310、支撑结构320、缓冲层360、金属片材370、中框340和光学指纹模组330。其中，缓冲层360为透明软性膜材，其固定在柔性显示屏310的下表面。柔性显示屏310的泡棉层311下方粘贴有金属片材370。金属片材370与中框340之间通过泡棉341连接，其中泡棉341起连接和缓冲的作用，其也可以替换为胶水、胶膜等粘贴材料。
支撑结构320为凸台结构，该凸台结构的凸起部向上，该凸起部伸入柔 性显示屏310下方的透光区域内，且该凸台结构的非凸起部位于该透光区域外。具体地，该凸台结构的凸起部位于泡棉层311的下方，且该凸起部的边缘通过泡棉321固定于泡棉层311的透光窗口的边缘，其中泡棉层311为柔性显示屏310自带的泡棉层。该凸台结构的非凸起部位于中框340的下方，且该非凸起部通过胶层321固定于中框340的透光窗口的边缘，其中该胶层321可以为胶膜或者胶水等粘贴材料。
该凸台结构被扣入柔性显示屏310下方的透光区域内。并且凸台结构的凸起部的上表面与缓冲层360之间存在间隔层350。其中，可以通过调整胶层321的和/或缓冲层360的厚度，间接地调整间隔层350的厚度，从而找到光学指纹模组330的最佳成像位置，使固定在凸台结构下表面的光学指纹模组330达到最优的指纹识别效果。
并且，由于能够通过调整胶层321的厚度，实现对凸台结构的垂直位置的调整，因此可以吸收各个叠层例如中框340、金属片材370等的加工和安装误差。
另外，从图5中可以看出，支撑结构320使得光学指纹模组330与柔性显示屏310之间解耦，能够在不损坏柔性显示屏310的情况下，实现对光学指纹模组330的更换和维修。
图6示出了图5中的指纹识别的装置的各个组件，其中，柔性显示屏310的下表面的开口区域内存在背胶，该开口区域为柔性显示屏310自带的泡棉层311和金属片材370等的透光窗口形成的开口区域，该背胶用于粘贴缓冲层360。缓冲层360通过该背胶粘贴在该开口内区域。中框340固定在柔性显示屏310的下表面，中框340的透光窗口的位置与柔性显示屏310的下表面的开口区域的位置相同。透明的凸台结构320扣入中框340的透光窗口内。光学指纹模组330固定在中框的下表面。
图7示出了柔性显示屏310、支撑结构320、金属片材370、中框340和光学指纹模组330。相比于图5和图6，图7中没有设置缓冲层360。其中，柔性显示屏310的泡棉层311下方粘贴有金属片材370。金属片材370与中框340之间通过泡棉341连接，其中泡棉341起连接和缓冲的作用，其也可以替换为胶水、胶膜等粘贴材料。
支撑结构320为凸台结构。该凸台结构的凸起部向上，该凸起部伸入柔性显示屏310下方的透光区域内，且该凸台结构的非凸起部位于该透光区域 外。具体地，该凸台结构的凸起部的边缘通过泡棉321与柔性显示屏310的下表面连接，其中泡棉321起连接和缓冲的作用。该凸台结构的非凸起部位于中框340的下方，且该非凸起部通过胶层321固定于中框340的透光窗口的边缘，其中该胶层321可以为胶膜或者胶水等粘贴材料。
该凸台结构被扣入柔性显示屏310下方的透光区域内。并且凸台结构的凸起部的上表面与柔性显示屏310之间存在间隔层350。其中，可以通过调整胶层321的厚度，间接地调整间隔层350的厚度，从而找到光学指纹模组330的最佳成像位置，使固定在凸台结构下表面的光学指纹模组330达到最优的指纹识别效果。
并且，由于能够通过调整胶层321的厚度，实现对凸台结构的垂直位置的调整，因此可以吸收各个叠层例如中框340、金属片材370等的加工和安装误差。
另外，从图7中可以看出，支撑结构320使得光学指纹模组330与柔性显示屏310之间解耦，能够在不损坏柔性显示屏310的情况下，实现对光学指纹模组330的更换和维修。
图5和图7中所示的间隔层350为空气间隔层。但本申请实施例并不限于此，能够实现光信号传输的间隔层350均应落入本申请的保护范围。
例如，可以将图6中的间隔层350替换为图8(a)所示的间隔层350。其中，在图8(a)中，支撑结构320为凸台结构，凸起部向上。位于凸台结构的上方的间隔层350上设置有多个通孔，这些通孔可以用于传输光信号。因此，间隔层350既能够使光学指纹模组330与柔性显示屏310之间保持的合适的距离，以满足光学指纹模组330的成像需求，又能够保证柔性显示屏310上方的手指反射或散射的光信号能够通过这些通孔顺利传输至光学指纹模组330。
本申请实施例对间隔层350上的通孔的形状和位置不做限定，例如图8(b)和图8(c)所示的间隔层350的俯视图，以4个通孔为例，这4个通孔可以并排设置，也可以在两个垂直方向上均匀设置。
间隔层350采用这种设计时，尤其适用于光学指纹模组330采用多光学指纹传感器拼接的情况。因为多个光学指纹传感器拼接时，光学指纹模组330的指纹检测区域的面积会变大，柔性显示屏310下方的透光区域的横向面积也会变大。通过间隔层350的非通孔区域可以实现对大面指纹采集区域内的 柔性显示屏310进行支撑。
例如，将图5中所示的间隔层350替换为带通孔的间隔层350，得到如图9所示的指纹识别的装置。
进一步地，还可以将图9中所示的缓冲层360去掉，从而得到如图10所示的指纹识别的装置。
对于图9和图10中各个部件的详细描述可以参考前述针对图5的相关描述，为了简洁，这里不再赘述。
该凸台结构可以是单体，例如该凸台结构由透明材料一体成型制成；该凸台结构也可以是组件，即该凸台结构由不同材料组合形成，例如该凸台结构的凸起部和非凸起部可以由不同材料制成。
当该凸台结构由不同材料组合形成时，可选地，该凸台结构的凸起部由固化的胶水形成，该凸台结构的非凸起部为粘贴于该凸起部下方的透明平板。
例如，所述凸起部是通过将固化前的该胶水填充于金属片材370的透光窗口内部并经过固化以形成的。
该胶水例如可以为固化胶，例如热固胶或者紫外线固化(Ultraviolet，UV)胶等。
其中，该透明平板例如可以由透明玻璃或透明树脂等制成。
上述这种由不同材料组成形成的凸台结构，例如可以通过图11所示的方法制作。
图11为一种支撑结构的制作方法的示意性流程图，其中该支撑结构为前述的凸台结构。如图11所示的，该方法1100包括：
在1110中，将金属片材370水平放置在辅助平板380的一侧上，其中，辅助平板380覆盖金属片材370的透光窗口。
在1120中，在辅助平板380上的位于该透光窗口内的部分点入液体状态的胶水322。
在1130中，将透明平板323从辅助平板380的另一侧覆盖至该透光窗口上，以使液体状态的胶水322充满该透光窗口。
在1140中，对液体状态的胶水322进行固化，得到该凸台结构。
其中，该凸台结构的凸起部为固化后的胶水322，该凸台结构的非凸起部为透明平板323。
下面以图12和图13为例进行详细描述。
图12所示为金属片材370的俯视图。该金属片材上设置透光窗口，该透光窗口位于柔性显示屏310下方的透光区域内，且用于传输用于指纹识别的光信号。该透光窗口可以为任意形状，其中，图12中以该金属片材的透光窗口为正方形为例。
图13示出了金属片材370、辅助平板380、当前成液体状态的胶水322以及透明平板323。其中，胶水322用于形成凸台结构的凸起部，透明平板323则作为凸台结构的非凸起部。辅助平板380例如可以是不粘胶的平板或薄膜，比如带硅油的玻璃板。
首先，将辅助平板380置于金属片材370的一侧，且覆盖金属片材370的透光窗口。
其次，在金属片材370的透光窗口内点胶，即将胶水322点在辅助平板380的位于该透光窗口内的位置。其中，胶水322的点胶量应当使得胶水322至少能够填满该透光窗口。
最后，将透明平板323从金属片材370的另一侧覆盖在该透光窗口上，使得胶水322自然地充满金属片材370的透光窗口内部以及金属片材370与透明平板323之间的间隙。
对胶水322进行固化，取掉辅助平板380，从而得到例如图14所示的嵌入金属片材370的透光窗口内的该凸台结构。其中，透明平板323与金属片材370之间的胶水很薄，此处未示出。
应理解，为了更方便地形成该凸台结构，通常将图13所示的辅助平板380置于最底层，金属片材370置于辅助平板380的上方，将胶水322从上方点入辅助平板380与金属片材370形成的窗口区域，并将透明平板323从上向下覆盖在金属片材370透光窗口上，以使胶水322充满该透光窗口。
此外，透明平板323与凸起部即固化后的胶水322之间，也可以通过透明胶水或者透明胶膜例如OCA等来实现连接。
该凸台结构的凸起部的厚度与该金属片材370的厚度相同。
可选地，该凸台结构的凸起部的上表面与金属片材370的上表面的高度相同。
可选地，该凸起部和金属片材370的上表面覆盖有固化前的胶水322溢出金属片材370的透光窗口所形成的溢出胶层3221。
该溢出胶层3221的厚度很小，可达到微米级别。也就是说，在凸台结 构的凸起部即固化后的胶水322的上表面，以及金属片材370的上表面，可以接收少量的溢胶。从而保证溢出胶层3221与金属片材370之间没有段差。由于厚度较小，图14中未示出溢出胶层3221。
如图15所示，该溢出胶层3221可以为不规则形状。
可以理解，该溢出胶层3221实现了由凸台结构的凸起部的上表面至金属片材370的上表面的过渡，因此可以进一步消除凸台结构与金属片材370之间的段差，提升用户体验并保护柔性显示屏310。
此外，该溢出胶层3221与金属片材370之间的段差例如也可以通过研磨抛光等方式来减小或者消除，这里不做限定。
基于图12至图15的凸台结构，图16和图17示出了应用该凸台结构的指纹识别的装置。
如图16所示，其中示出了柔性显示屏310、支撑结构320、金属片材370和光学指纹模组330。其中，柔性显示屏310下表面带有透明膜材313，该透明膜材313例如可以是OCA胶层，或者为复合层例如OCA胶层、PET层和OCA胶层的复合层。金属片材370固定在透明膜材313的下表面。支撑结构320包括嵌入金属片材370的透光窗口内的凸起部即固化的胶水322，以及位于金属片材370下方的非凸起部即透明平板323。光学指纹模组330粘贴在透明平板323的下表面。
又如图17所示，其中示出了柔性显示屏310、支撑结构320、缓冲层360、金属片材370和光学指纹模组330。其中，柔性显示屏310下表面带有泡棉层311，金属片材370固定在泡棉层311的下表面。支撑结构320包括嵌入金属片材370的透光窗口内的凸起部即固化的胶水322，以及位于金属片材370下方的非凸起部即透明平板323。缓冲层360的上表面粘贴在柔性显示屏310的下表面，且下表面与凸台结构的凸起部的上表面粘接。光学指纹模组330粘贴在透明平板323的下表面。
图16和图17中的凸台结构的具体描述可以参考前述图12至图15对其的描述，为了简洁，这里不再赘述。
在支撑结构320的另一种实现方式中，支撑结构320上设置有多个通孔，该多个通孔用于传输光信号。
例如，支撑结构320可以为设置有多个通孔的支撑层，比如设置有多个通孔的泡棉层或者金属层。
如图18所示，其中示出了柔性显示屏310、支撑结构320、缓冲层360、金属片材370、中框340和光学指纹模组330。柔性显示屏310的泡棉层311下方粘贴有金属片材370。金属片材370与中框340之间通过泡棉341连接，其中泡棉341起连接和缓冲的作用，其也可以替换为胶水、胶膜等粘贴材料。缓冲层360为透明软性膜材，其固定在柔性显示屏310的下表面。支撑结构320固定在缓冲层360的下表面。
支撑结构320为设置有多个通孔的支撑层，多个通孔用于传输来自柔性显示屏310上方的手指反射的光信号。支撑结构320位于柔性显示屏310下方的透光区域内，具体地，位于中框340的透光窗口内。光学指纹模组330固定在支撑结构320的下表面。
当然，图18中所示的支撑结构320也可以替换为透明材料层，从而实像光信号的传输，而不必对支撑结构320进行打孔。
本申请实施例中，通过在柔性显示屏310下方的透光区域内设置支撑结构320，使得支撑结构320能够为柔性显示屏310提供支撑作用，减小指纹识别过程中手指按压柔性显示屏导致的变形，避免对柔性显示屏的损伤。并且，由于光学指纹模组330设置在支撑结构320上，因此可以通过支撑结构320灵活地调整光学指纹模组330与柔性显示屏310之间的距离，提高指纹识别的性能。另外，由于光学指纹模组330与柔性显示屏310之间已经解耦，便于光学指纹模组330的拆卸和安装，有利于光学指纹模组330的维修。
本申请实施例中，位于透光区域内的各个粘贴材料应当为透明粘贴材料，以便于不影响光信号的传输，例如缓冲层360可以通过OCA胶粘贴在柔性显示屏310的下表面；而位于非光路上的各个粘贴材料，优选地，可以为其他非透光的粘贴材料，从而实现对杂光的吸收，例如凸台结构320的非凸起部的上表面通过泡棉、胶水或胶膜粘贴在中框上340的表面。图4至图18中并未示出全部粘贴材料。
本申请实施例还提供了一种电子设备，该电子设备包括柔性显示屏以及上述本申请各种实施例中的指纹识别的装置。
可选地，该电子设备还包括中框。
可选地，所述柔性显示屏与所述中框之间设置有金属片材。
作为示例而非限定，本申请实施例中的电子设备可以为终端设备、手机、平板电脑、笔记本电脑、台式机电脑、游戏设备、车载电子设备或穿戴式智 能设备等便携式或移动计算设备，以及电子数据库、汽车、银行自动柜员机(Automated Teller Machine，ATM)等其他电子设备。该穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等设备。
需要说明的是，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。
应理解，本申请实施例中的具体的例子只是为了帮助本领域技术人员更好地理解本申请实施例，而非限制本申请实施例的范围，本领域技术人员可以在上述实施例的基础上进行各种改进和变形，而这些改进或者变形均落在本申请的保护范围内。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (38)

  1. 一种指纹识别的装置，其特征在于，应用于具有柔性显示屏的电子设备，所述装置包括：
    支撑结构，用于至少部分设置在所述柔性显示屏下方的透光区域内，所述支撑结构用于支撑所述柔性显示屏；
    光学指纹模组，用于设置在所述支撑结构上，所述光学指纹模组用于采集经由所述柔性显示屏上方的手指反射或散射并从所述透光区域传输过来的光信号。
  2. 根据权利要求1所述的装置，其特征在于，所述支撑结构为凸台结构，所述凸台结构的凸起部位于所述透光区域内。
  3. 根据权利要求2所述的装置，其特征在于，所述凸起部位于所述柔性显示屏的泡棉层的下方。
  4. 根据权利要求3所述的装置，其特征在于，所述凸起部的边缘与所述柔性显示屏的泡棉层之间通过泡棉或者胶膜连接。
  5. 根据权利要求2至4中任一项所述的装置，其特征在于，所述凸台结构的非凸起部位于所述电子设备的中框的下方。
  6. 根据权利要求5所述的装置，其特征在于，所述非凸起部的上表面通过胶水或胶膜粘贴于所述中框的下表面。
  7. 根据权利要求2至4中任一项所述的装置，其特征在于，所述柔性显示屏下方设置有金属片材，所述金属片材上设置有透光窗口，所述透光窗口位于所述透光区域，
    其中，所述非凸起部位于所述金属片材的下方。
  8. 根据权利要求7所述的装置，其特征在于，所述非凸起部的上表面通过胶水或胶膜粘贴于所述金属片材的下表面。
  9. 根据权利要求7或8所述的装置，其特征在于，所述凸起部由固化的胶水形成，所述非凸起部为粘贴于所述凸起部下方的透明平板。
  10. 根据权利要求9所述的装置，其特征在于，所述凸起部是通过将固化前的所述胶水填充于所述金属片材的透光窗口内部并经过固化以形成的。
  11. 根据权利要求9至11中任一项所述的装置，其特征在于，所述凸起部的上表面与所述金属片材的上表面的高度相同。
  12. 根据权利要求9至11中任一项所述的装置，其特征在于，所述凸 起部和所述金属片材的上表面覆盖有固化前的所述胶水溢出所述金属片材的透光窗口所形成的溢出胶层。
  13. 根据权利要求9至12中任一项所述的装置，其特征在于，所述胶水为热固胶或者紫外线固化UV胶。
  14. 根据权利要求7至13中任一项所述的装置，其特征在于，所述电子设备的中框设置在所述金属片材的下方。
  15. 根据权利要求2至8中任一项所述的装置，其特征在于，所述凸台结构由透明材料一体制成。
  16. 根据权利要求15所述的装置，其特征在于，所述透明材料为透明玻璃或者树脂。
  17. 根据权利要求1至16中任一项所述的装置，其特征在于，所述柔性显示屏与所述支撑结构之间存在间隔层。
  18. 根据权利要求17所述的装置，其特征在于，所述间隔层为空气间隔层。
  19. 根据权利要求17所述的装置，其特征在于，所述间隔层上设置有至少一个通孔，所述至少一个通孔用于传输所述光信号。
  20. 根据权利要求19所述的装置，其特征在于，所述间隔层为泡棉层或者金属层。
  21. 根据权利要求1所述的装置，其特征在于，所述支撑结构上设置有多个通孔，所述多个通孔用于传输所述光信号。
  22. 根据权利要求21所述的装置，其特征在于，所述支撑结构为泡棉层或者金属层。
  23. 根据权利要求1至22中任一项所述的装置，其特征在于，所述装置还包括：
    缓冲层，用于设置在所述柔性显示屏与所述支撑结构之间。
  24. 根据权利要求23所述的装置，其特征在于，所述缓冲层固定在所述柔性显示屏的下表面。
  25. 根据权利要求24所述的装置，其特征在于，所述间隔层位于所述缓冲层与所述支撑结构之间。
  26. 根据权利要求23所述的装置，其特征在于，所述缓冲层固定在所述支撑结构的上表面。
  27. 根据权利要求26所述的装置，其特征在于，所述间隔层位于所述缓冲层与所述柔性显示屏之间。
  28. 根据权利要求23所述的装置，其特征在于，所述缓冲层的上表面粘贴于所述柔性显示屏的下表面，所述缓冲层的下表面粘贴于所述凸台结构的凸起部的上表面。
  29. 根据权利要求23至28中任一项所述的装置，其特征在于，所述缓冲层包括一层或多层透明膜材。
  30. 根据权利要求1至29中任一项所述的装置，其特征在于，所述光学指纹模组固定在所述支撑结构的下表面。
  31. 一种电子设备，其特征在于，所述电子设备包括：
    柔性显示屏；以及，
    如权利要求1至30中任一项所述的指纹识别的装置。
  32. 根据权利要求31所述的电子设备，其特征在于，所述电子设备还包括中框。
  33. 根据权利要求32所述的电子设备，其特征在于，所述柔性显示屏与所述中框之间设置有金属片材。
  34. 一种支撑结构的制作方法，其特征在于，所述支撑结构用于支撑电子设备的柔性显示屏，所述支撑结构为凸台结构，所述方法包括：
    将用于设置在所述柔性显示屏下方的金属片材，水平放置在辅助平板的一侧上，其中，所述辅助平板覆盖所述金属片材的透光窗口；
    在所述辅助平板上的位于所述透光窗口内的部分点入液体状态的胶水；
    将透明平板从所述辅助平板的另一侧覆盖至所述透光窗口上，以使液体状态的所述胶水充满所述透光窗口；
    对液体状态的所述胶水进行固化，得到所述凸台结构，其中，所述凸台结构的凸起部为固化后的所述胶水，所述凸台结构的非凸起部为所述透明平板。
  35. 根据权利要求34所述的方法，其特征在于，所述凸起部的上表面与所述金属片材的上表面的高度相同。
  36. 根据权利要求34或35所述的方法，其特征在于，所述凸起部和所述金属片材的上表面覆盖有固化前的所述胶水溢出所述金属片材的透光窗口所形成的溢出胶层。
  37. 根据权利要求34至36中任一项所述的方法，其特征在于，所述胶水为热固胶或者紫外线固化UV胶。
  38. 根据权利要求34至37中任一项所述的方法，其特征在于，所述透明平板由透明玻璃或者透明树脂制成。
PCT/CN2019/085291 2019-04-30 2019-04-30 指纹识别的装置和电子设备 Ceased WO2020220304A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980002816.9A CN110799988B (zh) 2019-04-30 2019-04-30 指纹识别的装置和电子设备
PCT/CN2019/085291 WO2020220304A1 (zh) 2019-04-30 2019-04-30 指纹识别的装置和电子设备
CN201921819297.9U CN212749851U (zh) 2019-04-30 2019-10-25 指纹识别的装置和电子设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/085291 WO2020220304A1 (zh) 2019-04-30 2019-04-30 指纹识别的装置和电子设备

Publications (1)

Publication Number Publication Date
WO2020220304A1 true WO2020220304A1 (zh) 2020-11-05

Family

ID=69448587

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/085291 Ceased WO2020220304A1 (zh) 2019-04-30 2019-04-30 指纹识别的装置和电子设备

Country Status (2)

Country Link
CN (2) CN110799988B (zh)
WO (1) WO2020220304A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112995377A (zh) * 2021-02-09 2021-06-18 维沃移动通信有限公司 电子设备
CN113691661A (zh) * 2021-08-27 2021-11-23 维沃移动通信有限公司 电子设备
CN113762167A (zh) * 2021-09-09 2021-12-07 业泓科技(成都)有限公司 屏下指纹辨识装置及电子设备

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110799988B (zh) * 2019-04-30 2023-09-12 深圳市汇顶科技股份有限公司 指纹识别的装置和电子设备
CN113296277A (zh) * 2020-02-24 2021-08-24 宁波激智科技股份有限公司 一种准直膜、及一种减干涉准直膜及其制备方法
CN111808544B (zh) * 2020-07-24 2021-11-02 昆山国显光电有限公司 一种光学胶带和显示面板
CN111785175B (zh) * 2020-08-11 2025-04-04 京东方科技集团股份有限公司 一种柔性显示模组、屏下指纹显示装置和制作方法
KR102955002B1 (ko) 2020-08-17 2026-04-21 삼성디스플레이 주식회사 표시 장치
CN112580605B (zh) * 2020-12-31 2024-05-24 敦泰电子（深圳）有限公司 指纹图像采集方法、装置、电子设备及存储介质
KR20230050047A (ko) 2021-10-07 2023-04-14 삼성전자주식회사 지문 센서를 포함하는 전자 장치
US20240306469A1 (en) * 2022-04-28 2024-09-12 Chengdu Boe Optoelectronics Technology Co., Ltd. Display module and display apparatus
CN115171532A (zh) * 2022-07-05 2022-10-11 Oppo广东移动通信有限公司 柔性屏及电子设备
CN115661874B (zh) * 2022-10-26 2025-09-26 维沃移动通信有限公司 折叠式电子设备
CN118015922A (zh) * 2024-01-30 2024-05-10 京东方科技集团股份有限公司 显示模组及折叠显示装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109508600A (zh) * 2017-09-15 2019-03-22 南昌欧菲生物识别技术有限公司 光学指纹识别组件及其制造方法及电子装置
CN109643377A (zh) * 2018-11-19 2019-04-16 深圳市汇顶科技股份有限公司 指纹识别装置和电子设备
CN208781246U (zh) * 2019-03-20 2019-04-23 深圳市汇顶科技股份有限公司 指纹识别的装置和电子设备

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205540793U (zh) * 2013-04-15 2016-08-31 Ip城市株式会社 指纹传感器模块
CN104794454A (zh) * 2015-04-30 2015-07-22 京东方科技集团股份有限公司 指纹识别器件、显示屏及显示装置
CN110825171B (zh) * 2017-04-27 2023-06-20 Oppo广东移动通信有限公司 显示屏、显示装置及移动终端
CN107241468B (zh) * 2017-05-12 2020-08-18 Oppo广东移动通信有限公司 显示装置及移动终端
CN108701179A (zh) * 2017-07-07 2018-10-23 深圳市汇顶科技股份有限公司 电子终端及具有生物特征识别功能的装置
CN109508593A (zh) * 2017-09-15 2019-03-22 南昌欧菲生物识别技术有限公司 光学指纹识别组件及电子装置
CN107680988B (zh) * 2017-09-15 2020-03-13 上海天马微电子有限公司 一种显示面板及电子设备
CN109508613A (zh) * 2017-09-15 2019-03-22 南昌欧菲生物识别技术有限公司 光学指纹识别组件及电子装置
WO2019061535A1 (zh) * 2017-09-30 2019-04-04 深圳市汇顶科技股份有限公司 指纹识别的方法、装置和终端设备
CN209460783U (zh) * 2018-08-06 2019-10-01 深圳市汇顶科技股份有限公司 屏下光学指纹识别装置及电子设备
CN109284708A (zh) * 2018-09-12 2019-01-29 京东方科技集团股份有限公司 一种指纹识别器件及显示装置
WO2020082369A1 (zh) * 2018-10-26 2020-04-30 深圳市汇顶科技股份有限公司 屏下生物特征识别装置和电子设备
CN109496313B (zh) * 2018-10-26 2022-05-17 深圳市汇顶科技股份有限公司 指纹识别装置和电子设备
CN109564630A (zh) * 2018-11-09 2019-04-02 深圳市汇顶科技股份有限公司 液晶显示指纹模组、指纹识别方法、电子设备及存储介质
CN110799988B (zh) * 2019-04-30 2023-09-12 深圳市汇顶科技股份有限公司 指纹识别的装置和电子设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109508600A (zh) * 2017-09-15 2019-03-22 南昌欧菲生物识别技术有限公司 光学指纹识别组件及其制造方法及电子装置
CN109643377A (zh) * 2018-11-19 2019-04-16 深圳市汇顶科技股份有限公司 指纹识别装置和电子设备
CN208781246U (zh) * 2019-03-20 2019-04-23 深圳市汇顶科技股份有限公司 指纹识别的装置和电子设备

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112995377A (zh) * 2021-02-09 2021-06-18 维沃移动通信有限公司 电子设备
CN112995377B (zh) * 2021-02-09 2023-06-02 维沃移动通信有限公司 电子设备
CN113691661A (zh) * 2021-08-27 2021-11-23 维沃移动通信有限公司 电子设备
CN113762167A (zh) * 2021-09-09 2021-12-07 业泓科技(成都)有限公司 屏下指纹辨识装置及电子设备
CN113762167B (zh) * 2021-09-09 2024-02-27 业泓科技(成都)有限公司 屏下指纹辨识装置及电子设备

Also Published As

Publication number Publication date
CN110799988A (zh) 2020-02-14
CN110799988B (zh) 2023-09-12
CN212749851U (zh) 2021-03-19

Similar Documents

Publication Publication Date Title
CN110799988B (zh) 指纹识别的装置和电子设备
CN111967417B (zh) 指纹识别装置和电子设备
CN208781246U (zh) 指纹识别的装置和电子设备
CN211375619U (zh) 指纹识别的装置和电子设备
CN214225933U (zh) 指纹识别的装置和电子设备
CN212135453U (zh) 指纹检测装置和电子设备
CN211349388U (zh) 指纹识别装置和电子设备
KR102438467B1 (ko) 지문 인식 장치 및 전자 장치
CN110036396B (zh) 指纹识别装置和电子设备
CN109496313B (zh) 指纹识别装置和电子设备
WO2020102949A1 (zh) 指纹识别装置和电子设备
WO2020082369A1 (zh) 屏下生物特征识别装置和电子设备
CN209640886U (zh) 指纹识别的装置和电子设备
WO2021051737A1 (zh) 指纹识别装置、背光模组、液晶显示屏和电子设备
CN110709860A (zh) 指纹识别的装置和电子设备
CN111801685A (zh) 指纹检测装置和电子设备
CN215867894U (zh) 补强结构、显示组件和电子设备
WO2021248496A1 (zh) 指纹检测装置和电子设备
CN113745302B (zh) 补强结构、制作该补强结构的方法、显示组件和电子设备
CN115088026B (zh) 指纹检测装置和电子设备

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: 19926791

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19926791

Country of ref document: EP

Kind code of ref document: A1