WO2020168953A1 - 屏组件及电子设备 - Google Patents

屏组件及电子设备 Download PDF

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Publication number
WO2020168953A1
WO2020168953A1 PCT/CN2020/074830 CN2020074830W WO2020168953A1 WO 2020168953 A1 WO2020168953 A1 WO 2020168953A1 CN 2020074830 W CN2020074830 W CN 2020074830W WO 2020168953 A1 WO2020168953 A1 WO 2020168953A1
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WO
WIPO (PCT)
Prior art keywords
area
identification
screen assembly
recognition
fingerprint
Prior art date
Application number
PCT/CN2020/074830
Other languages
English (en)
French (fr)
Inventor
林娇
蔡奇
彭旭
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2021548660A priority Critical patent/JP7262600B2/ja
Priority to EP20758780.9A priority patent/EP3905111A4/en
Priority to AU2020226426A priority patent/AU2020226426B2/en
Priority to US17/430,038 priority patent/US20220139104A1/en
Publication of WO2020168953A1 publication Critical patent/WO2020168953A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1365—Matching; Classification

Definitions

  • the embodiments of the present application relate to the technical field of electronic products, in particular to a screen assembly and an electronic device.
  • the embodiments of the present application provide a screen assembly and an electronic device to realize large-area fingerprint recognition and low cost.
  • an embodiment of the present application provides a screen assembly.
  • the screen assembly can be applied to electronic equipment.
  • the screen assembly includes a display panel and an identification panel on the non-light emitting side of the display panel.
  • the identification panel and the display panel are stacked.
  • the display panel is used for displaying images.
  • the two sides of the display panel are respectively a light-emitting side and a non-light-emitting side, wherein the light-emitting side is the side where the display panel emits display light.
  • the display panel includes a plurality of identification areas.
  • a non-recognition area is formed between the two adjacent and spaced recognition areas.
  • the recognition panel includes a plurality of image sensors.
  • the photosensitive surfaces of the plurality of image sensors are used to collect user fingerprint images located in the plurality of identification areas in a one-to-one correspondence.
  • the photosensitive surface of the image sensor can convert the light image formed thereon into an electrical signal that is proportional to the light image.
  • the ratio of the total area of all the identification areas to the total area of all the non-identification areas is greater than or equal to 1:5.
  • the identification panel including the multiple image sensors is located on the non-light emitting side of the display panel, so the multiple image sensors can collect fingerprint images under the screen, and the multiple image sensors need not Occupying the peripheral space of the display panel, the area of the display panel is increased, which is conducive to the narrow frame of the screen assembly, so that the screen occupancy of the screen assembly is relatively large, and the electronic device using the screen assembly The screen occupancy is relatively large.
  • the photosensitive surfaces of the plurality of image sensors collect partial user fingerprint images located on the light-emitting side of the multiple identification areas in a one-to-one correspondence, and do not collect some fingerprint images located on the light-emitting side of the non-recognition area Therefore, the photosensitive surfaces of the multiple image sensors perform partial collection of user fingerprint images on the light-emitting side of the display panel, instead of collecting all of them, so that the total area of the photosensitive surfaces of the multiple image sensors can be reduced. The cost of the identification panel and the screen assembly can be reduced.
  • the photosensitive surfaces of the multiple image sensors collect The total area of the partial fingerprint image (that is, the effective collection area) can meet the minimum collection area required by the fingerprint recognition process, so that the screen assembly can meet the basic recognition requirements, while reducing the photosensitive surface of the multiple image sensors The total area is reduced, thereby reducing the cost of the multiple image sensors, and also reducing the cost of the screen assembly. Since the screen assembly can meet the identification requirements and has a low cost, the screen assembly can realize large-area fingerprint recognition (full-screen fingerprint recognition or large-screen fingerprint recognition) without significantly increasing the cost. That is, the screen assembly and the electronic device using the screen assembly can realize large-area fingerprint recognition and have low cost.
  • the ratio of the total area of all the identification areas to the total area of all the non-identification areas is in the range of 1:2 to 2:1.
  • the range of "A" to "B” includes endpoint A and endpoint B.
  • the upper limit of the ratio of the total area of all the identification areas to the total area of all the non-identification areas in the fingerprint coverage area is not strictly limited in this application.
  • the larger the ratio the higher the recognition accuracy.
  • the lower the ratio the lower the cost.
  • the screen component can realize full-screen fingerprint recognition.
  • the fingerprint coverage area may be located at any position of the display area of the display panel. That is, the entire display area of the display panel can respond to the user's operation to form a corresponding fingerprint coverage area.
  • the screen assembly can realize large-screen fingerprint recognition.
  • the fingerprint coverage area may be located in a designated range of the display area of the display panel. For example, a part of the display area of the display panel is a designated position, and this part of the area can form a corresponding fingerprint coverage area in response to a user's operation.
  • the area of the designated range is relatively large.
  • the specified range can be half or more of the upper or lower screen of the screen assembly, and can be half or more of the left or right screen of the screen assembly.
  • the fingerprint coverage area responds to user operations. That is, the location of the fingerprint coverage area is customized by the user.
  • the screen assembly may sense a user's touch area, and the touch area forms the fingerprint coverage area. At this time, the shape of the fingerprint coverage area changes with the shape of the user's touch area.
  • the screen component may activate the preset fingerprint coverage area corresponding to the touch location by sensing the user's touch location, and the fingerprint coverage area covers the touch location.
  • the shape of the fingerprint coverage area may be a circle, an oval, a square, a racetrack, or the like.
  • the shape of the fingerprint coverage area may also be similar or the same as the shape of the user's finger.
  • the shape of the fingerprint coverage area can also be customized by the user. The embodiment of the present application does not strictly limit the specific shape of the fingerprint coverage area.
  • the area covered by the fingerprint is in the range of 35 square millimeters to 200 square millimeters.
  • the area covered by the fingerprint may range from 64 square millimeters to 144 square millimeters.
  • the fingerprint coverage area includes at least two identification areas. At this time, the area of each recognition area is small.
  • the images collected by the photosensitive surfaces of the image sensors corresponding to at least two of the identification regions are stitched into a final comparison image. Since the comparison image is formed by stitching multiple images, the comparison image is more accurate, which is beneficial to improve the fingerprint recognition accuracy of the electronic device using the screen assembly.
  • the smaller the area of each recognition area the more the comparison images are stitched together, the higher the image quality of the comparison images, and the accuracy of fingerprint recognition Higher, and the larger number of image sensors also brings high cost; and the larger the area of each recognition area, although the number of image sensors can be reduced to reduce costs, the number of stitched images included in the comparison image is reduced , The image quality of the comparison image decreases, and the accuracy of fingerprint recognition decreases. Therefore, when designing the area of a single recognition area in the embodiment of the present application, it is necessary to consider both the recognition accuracy requirement and the cost requirement.
  • the photosensitive surface of each image sensor includes a plurality of sensor units arranged in an array.
  • the sensing unit may be a complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS) sensor, or a thin film transistor (thin film transistor, TFT) sensor.
  • CMOS complementary metal oxide semiconductor
  • TFT thin film transistor
  • the substrate of the image sensor adopts a semiconductor material.
  • the substrate of the image sensor adopts insulating materials such as glass or organic medium.
  • the shape and area of each of the identification regions may be the same or different. This application is described by taking as an example that the shapes and areas of the identification regions are the same.
  • the arrangement of the multiple recognition areas may be regular or random. .
  • the arrangement of the multiple identification areas can be described as an example.
  • the multiple identification areas are arranged at intervals in the first direction. That is, in the first direction, the non-recognition area is arranged between any two adjacent recognition areas. At this time, in the first direction, the distance between any two adjacent identification areas has a first size, and the length of each identification area has a second size.
  • the first size may be greater than, equal to, or smaller than the second size, and the embodiment of the present application does not strictly limit the size relationship between the two.
  • the two fingerprint coverage areas are arranged at intervals in the first direction, when the two fingerprint coverage areas are located at different positions of the display panel, the two fingerprint coverage areas
  • the number of photosensitive surfaces of the corresponding image sensors is the same or similar, thereby ensuring that the screen assembly can obtain a sufficient effective collection area in different usage scenarios, so that the fingerprint recognition accuracy of the electronic device is high.
  • the plurality of identification regions are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction. That is, in the second direction, non-recognition areas are arranged between any two adjacent recognition areas. At this time, in the second direction, the distance between any two adjacent identification areas has a third dimension, and the length of each identification area has a fourth dimension.
  • the third size may be greater than, equal to, or smaller than the fourth size, and the embodiment of the present application does not strictly limit the size relationship between the two.
  • the two fingerprint coverage areas corresponding to the two fingerprints are located at different positions of the display panel.
  • the number of photosensitive surfaces of the image sensor is the same or more similar, which further ensures that the screen assembly can obtain a sufficient effective collection area in different usage scenarios, so that the fingerprint recognition accuracy of the electronic device is higher.
  • the arrangement of the plurality of identification regions in the first direction is the same as the arrangement in the second direction. At this time, the reliability of the screen assembly to obtain a sufficient effective collection area under different usage scenarios is higher, and the fingerprint recognition accuracy of the electronic device is higher.
  • the arrangement of the plurality of identification regions in the first direction may be different from the arrangement in the second direction.
  • the plurality of identification areas are arranged in rows at intervals in the first direction, and arranged in rows at intervals in the second direction, and the second direction is perpendicular to the first direction.
  • Each of the identification areas in the two adjacent rows of the identification areas are arranged in different columns. At this time, each of the identification areas in two adjacent columns of the identification areas are arranged in different columns.
  • the number of identification areas included in any two fingerprint coverage areas with different positions of the screen assembly is very similar, that is, the photosensitive surface of the image sensor corresponding to the two fingerprint coverage areas
  • the numbers are very similar, and the screen assembly can obtain sufficient effective collection area in different usage scenarios, so that the fingerprint recognition accuracy of the electronic device is higher.
  • the ratio of the total area of all the recognition areas to the total area of all the non-recognition areas is in the range of 1:0.8 to 1:1.2.
  • the distance between two adjacent identification areas may be equal to, slightly greater than, or slightly less than the length of the identification area.
  • the distance between two adjacent identification areas may also be equal to, slightly greater than or slightly less than the length of the identification areas.
  • the screen assembly can comprehensively consider the requirements of manufacturing tolerances, assembly tolerances, total image collection area, cost, etc., to obtain higher product yield, fingerprint recognition accuracy, and lower cost.
  • the multiple identification areas include multiple identification area groups.
  • Each of the identification area groups includes at least two of the identification areas adjacent to each other. Any two adjacent identification area groups are arranged at intervals with each other. Wherein, that at least two identification areas are adjacent to each other means that the distance between two adjacent identification areas of the same identification area group is much smaller than the distance between two adjacent identification area groups.
  • the non-recognition area is formed between any two adjacent recognition area groups.
  • the plurality of identification area groups are arranged at intervals in a first direction, and arranged at intervals or continuously in a second direction, and the second direction is perpendicular to the first direction.
  • each of the recognition area groups includes at least two recognition areas adjacent to each other, and any two adjacent recognition area groups are arranged at intervals with each other, the arrangement of the recognition areas The method is more diversified, which is conducive to meeting the fingerprint identification requirements of different electronic devices.
  • Each of the recognition area groups includes at least two recognition areas, which also enables the recognition area to collect continuous images in a small area, so that the final comparison image formed by the screen assembly is spliced by at least two continuous images As a result, the final comparison image is easier to compare with the standard image in the electronic device, and the fingerprint recognition accuracy of the electronic device is higher.
  • the fingerprint coverage area includes at least two identification area groups.
  • the final comparison image formed by the screen assembly is formed by stitching together the images collected by at least two of the identification area groups, and the image quality is high, so that the fingerprint recognition of the electronic device using the screen assembly The accuracy is high.
  • a single image sensor includes one photosensitive surface. At this time, the overall volume of the image sensor changes with the area of its photosensitive surface, and the area of the photosensitive surface is designed to be small, so that the overall volume of the image sensor is small, which is beneficial to reducing the cost of the image sensor.
  • a single image sensor includes a plurality of photosensitive surfaces.
  • multiple photosensitive surfaces can be integrated into the same image sensor to reduce the difficulty of the cutting process of the image sensor, thereby taking into account the small size and easy processing requirements of the image sensor.
  • the multiple photosensitive surfaces of the same image sensor may be arranged at intervals with each other, or may be arranged adjacent to each other.
  • the identification panel further includes a substrate and an optical layer.
  • the substrate is located on the non-light emitting side of the display panel.
  • the plurality of image sensors are fixed on the side of the substrate facing the display panel.
  • the photosensitive surface of each image sensor is arranged away from the substrate, that is, arranged facing the display panel.
  • the optical layer is located between the plurality of image sensors and the display panel.
  • the optical layer is used to image the user fingerprint image located on the light emitting side of the identification area onto the corresponding photosensitive surface of the image sensor.
  • the screen assembly processes the light reflected by the user's fingerprint through the optical layer to form a corresponding collection image on the corresponding photosensitive surface of the image sensor, and the collection image corresponds to the user's fingerprint image.
  • the optical layer can change the light state, so the structure and size of the optical layer can be set to make the photosensitive surface of the image sensor and the The relative positional relationship of the display panel changes, which makes the structure of the screen assembly more diversified, and the application range of the screen assembly is wider.
  • the photosensitive surfaces of the plurality of image sensors may directly face the plurality of identification regions in a one-to-one correspondence.
  • the optical layer changes the propagation direction of the light slightly, which can reduce the risk of distortion of the light during the propagation process and the resulting inaccuracy of the final comparison image, so that the electronics of the screen assembly The fingerprint recognition accuracy of the device is high.
  • the optical layer can change the propagation direction of light, so the relative positional relationship between the light-sensitive surfaces of the plurality of image sensors may be slightly different from the relative positional relationship of the plurality of identification regions.
  • a single image sensor includes multiple photosensitive surfaces, and the multiple photosensitive surfaces are adjacent to each other.
  • the plurality of identification regions corresponding to the plurality of photosensitive surfaces are arranged at intervals.
  • the propagation direction of the light is changed by the optical layer, so that the light entering from these identification areas is converged and injected into a plurality of adjacent photosensitive surfaces, thereby realizing image collection.
  • the substrate may be a rigid printed circuit board (printed circuit board, PCB).
  • the substrate may include a flexible printed circuit (FPC) and a reinforcement board, and the reinforcement board and the flexible printed circuit board are laminated.
  • PCB printed circuit board
  • FPC flexible printed circuit
  • the multiple image sensors may be directly bonded to the substrate in a die attach manner.
  • the plurality of image sensors may be connected into an integrated package structure using a fan-out process, and then the package structure is integrally bonded to the substrate.
  • the identification panel further includes a package.
  • the package is located on a side of the substrate facing the display panel, and is arranged around the plurality of image sensors. At this time, the package encapsulates the plurality of image sensors into an integrated package structure.
  • the package may adopt a fan-out process to package a plurality of the image sensors.
  • the optical layer covers the package and the plurality of image sensors. At this time, the optical layer may be an integral structure.
  • the package can first encapsulate the plurality of image sensors into an integrated packaging structure, and then attach the packaging structure to the substrate, and then attach the optical layer that is also an integrated structure. Covering the package and the plurality of image sensors, the assembly process steps of the screen assembly are few and the process difficulty is low, which is beneficial to reduce the production cost of the screen assembly.
  • the optical layer includes a plurality of optical parts.
  • the plurality of optical parts are located on the plurality of image sensors in one-to-one correspondence.
  • the optical part is located on the side of the corresponding image sensor where the image is collected, that is, located above the photosensitive surface of the image sensor.
  • the identification panel further includes a plurality of packages.
  • the plurality of packages and the plurality of optical parts are arranged in one-to-one correspondence. Each package body is used to package the corresponding optical part and the image sensor into an integral unit assembly.
  • the identification panel also includes a package.
  • the package is located on a side of the substrate facing the display panel, and is arranged around the plurality of image sensors and the plurality of optical parts.
  • the image sensor and the optical part located above it may first form a unit assembly, and after a plurality of the unit assemblies are fixed to the substrate, a plurality of the units are connected through the package.
  • the components and the substrate are packaged into an integrated structure.
  • the image sensor and the optical part located above it may first form a unit assembly, and after a plurality of the unit assemblies are packaged into an integrated structure by the packaging member, the structure is bonded To the substrate to complete the assembly.
  • the corresponding optical part and the image sensor can form a unit assembly, and then a plurality of the unit assemblies are fixed to the substrate according to specific arrangement requirements, so the screen assembly can Without changing the type of material, different identification panels can be formed by changing the positions of the unit components, which is beneficial to the batching and multi-modeling of the screen components.
  • the optical layer includes a plurality of collimators.
  • the collimator is used to transform divergent light into collimated light.
  • the plurality of collimators are arranged directly opposite to the photosensitive surfaces of the plurality of image sensors in a one-to-one correspondence.
  • the plurality of collimators form a collection image with a ratio of 1:1 on the photosensitive surface of the image sensor. Since the plurality of collimators can collimate the light reflected by the fingerprint of the user, the image quality of the captured image is higher, and the screen assembly can form a higher quality comparison image, so that the The fingerprint recognition accuracy of electronic equipment is relatively high.
  • the collimator is used to image the acquired image with a ratio of 1:1, the area of the light-sensitive surface of the image sensor is similar to the area of the recognition area on the display panel. Considering the tolerances of the multiple image sensors during assembly, a reasonable escape can be reserved between the two image sensors that are close to each other to improve the assembly accuracy and product yield of the screen assembly.
  • each of the collimators can be directly formed on the wafer level processing technology.
  • the photosensitive surface of the image sensor For example, a multi-layer mask process may be used to deposit or etch a collimating hole structure on the photosensitive surface of the image sensor to form the collimator.
  • each of the collimators may be a thin film with collimating holes formed first, and then each of the collimators is attached to the corresponding photosensitive surface of the image sensor.
  • the optical layer may be an integrated structure including a plurality of collimators.
  • the optical layer includes a plurality of light-transmitting small holes.
  • the optical layer may include a substrate and a light-shielding film, and the light-shielding film is located on a side of the substrate facing the display panel.
  • the substrate is made of light-transmitting material, such as glass or polycarbonate (PC).
  • the light-shielding film has the plurality of light-transmitting small holes.
  • the light-shielding film adopts a light-shielding material.
  • the plurality of light-transmitting small holes are arranged directly opposite to the photosensitive surfaces of the plurality of image sensors in a one-to-one correspondence.
  • a first distance is formed between the center of each light-transmitting hole and the light-emitting surface of the display panel, and a second distance is formed between the center of each light-transmitting hole and the photosensitive surface of the image sensor, the first distance being greater than the second distance spacing.
  • the plurality of light-transmitting small holes form a collection image with an object image ratio X:1 on the photosensitive surface of the image sensor.
  • X is greater than 1.
  • the area of the collected image is smaller than the area of the recognition area on the display panel. Therefore, when the area of the recognition area remains unchanged, the area of the photosensitive surface of the image sensor can be reduced, so that The cost of the image sensor is reduced, and the cost of the screen assembly is reduced.
  • the area of the recognition area corresponding to the image sensor increases, and the splicing of multiple recognition areas may adopt redundant splicing, thereby improving the Describes the accuracy of fingerprint recognition of electronic equipment.
  • the screen assembly can reduce the area of the photosensitive surface of the image sensor by adjusting the size of the first interval and the second interval, or increase the area of the recognition area corresponding to the photosensitive surface of the image sensor .
  • the light-emitting surface of the display panel is a surface of the display panel away from the identification panel.
  • the non-light-emitting surface of the display panel is arranged opposite to the light-emitting surface of the display panel.
  • a gap is formed between the non-light-emitting surface of the display panel and the center of the light-transmitting hole. The size of the first spacing can be adjusted by adjusting the size of the spacing.
  • the base of the optical layer has a thickness (a dimension in a direction perpendicular to the photosensitive surface of the image sensor).
  • the size of the second gap can be adjusted by adjusting the thickness of the substrate.
  • the screen assembly further includes a transparent adhesive layer, and the adhesive layer is bonded between the display panel and the optical layer.
  • the adhesive layer is filled between the display panel and the optical layer.
  • the adhesive layer can adhere the optical layer and the display panel, and can also prevent light from affecting the quality of the captured image due to scattering of the air layer.
  • the adhesive layer can be a transparent optical glue. In an embodiment, the adhesive layer can also cover the package at the same time.
  • the optical layer includes a plurality of lenses.
  • the plurality of lenses are arranged facing the photosensitive surfaces of the plurality of image sensors in a one-to-one correspondence.
  • the lens is used for imaging and reducing the user fingerprint image to the photosensitive surface of the image sensor.
  • the lens is used to collect light.
  • the lens is used to image and reduce the user fingerprint image to the photosensitive surface of the image sensor, and the area ratio of the captured image formed on the photosensitive surface of the image sensor to the corresponding recognition area Less than 1, that is, the ratio of the object image is greater than 1.
  • the area of the collected image is smaller than the area of the recognition area on the display panel. Therefore, when the area of the recognition area remains unchanged, the area of the photosensitive surface of the image sensor can be reduced, so that The cost of the image sensor is reduced, and the cost of the screen assembly is reduced.
  • the area of the photosensitive surface of the image sensor remains unchanged, the area of the recognition area corresponding to the photosensitive surface of the image sensor increases, and the splicing of multiple recognition areas may adopt redundant splicing, Therefore, the accuracy of fingerprint recognition of the electronic device is improved.
  • a single lens may include one or more sub-lenses.
  • the sub-lens is a convex lens.
  • the multiple sub-lens may be multiple convex lenses, or a combination of concave and convex lenses.
  • the lens may also be a plane lens made with a metamaterial structure.
  • an embodiment of the present application also provides an electronic device.
  • the electronic device includes a housing and the screen assembly described in any one of the above.
  • the screen assembly is installed on the housing.
  • the screen assembly since the screen assembly has a larger display area, the screen occupancy of the electronic device is relatively large. Since the screen assembly can reduce the total area of the photosensitive surfaces of the plurality of image sensors under the condition of having a sufficient effective collection area, thereby reducing the cost of the plurality of image sensors, the cost of the screen assembly is lower , The electronic device can realize large-area fingerprint recognition without significantly affecting the fingerprint recognition performance with low cost.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the structure of the screen assembly of the electronic device shown in FIG. 1;
  • Fig. 3 is a schematic structural diagram of the structure of the screen assembly shown in Fig. 2 at line A-A in an embodiment
  • FIG. 4 is a schematic structural diagram of the structure of the screen assembly shown in FIG. 2 at line A-A in another embodiment
  • FIG. 5A is a schematic diagram of a partial structure of a display panel of the screen assembly shown in FIG. 2 in an embodiment
  • FIG. 5B is a schematic diagram of the recognition area and the non-recognition area of the display panel shown in FIG. 5A in one arrangement;
  • FIG. 5C is a schematic diagram of the recognition area and the non-recognition area of the display panel shown in FIG. 5A in another arrangement;
  • 5D is a schematic diagram of the recognition area and the non-recognition area of the display panel shown in FIG. 5A in yet another arrangement;
  • 6A is a schematic diagram of a part of the structure of the display panel of the screen assembly shown in FIG. 2 in another embodiment
  • 6B is a schematic diagram of a part of the structure of the display panel of the screen assembly shown in FIG. 2 in another embodiment
  • 6C is a schematic diagram of a part of the structure of the display panel of the screen assembly shown in FIG. 2 in still another embodiment
  • FIG. 7 is a schematic structural diagram of the screen assembly shown in FIG. 3 in the first embodiment
  • Fig. 8A is a schematic structural diagram of the screen assembly shown in Fig. 7 in the first embodiment
  • FIG. 8B is a schematic structural diagram of the screen assembly shown in FIG. 7 in the second embodiment
  • FIG. 8C is a schematic structural diagram of the screen assembly shown in FIG. 7 in the third embodiment.
  • Fig. 9 is a schematic structural diagram of the screen assembly shown in Fig. 3 in the second embodiment.
  • FIG. 10A is a schematic structural diagram of the screen assembly shown in FIG. 9 in the first embodiment
  • FIG. 10B is a schematic structural diagram of the screen assembly shown in FIG. 9 in the second embodiment
  • Fig. 10C is a schematic structural diagram of the screen assembly shown in Fig. 9 in the third embodiment.
  • FIG. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application.
  • the electronic device 100 may be a mobile phone, a tablet computer, an e-reader, a notebook computer, a vehicle-mounted device, or a wearable device.
  • the electronic device 100 is a mobile phone as an example for description.
  • the electronic device 100 includes a housing 10 and a screen assembly 20.
  • the screen assembly 20 is installed on the housing 10.
  • the housing 10 includes a frame and a back cover.
  • the frame is arranged around the periphery of the back cover.
  • the screen assembly 20 is installed on the side of the frame away from the back cover. That is, the screen assembly 20 and the back cover are respectively installed on both sides of the frame.
  • the screen assembly 20 is usually placed toward the user, and the back cover is placed away from the user.
  • the frame and the back cover can be assembled to form an integrated structure.
  • the frame and the back cover can also be an integral structure.
  • the screen assembly 20 integrates a display function, a touch sensing function, and a fingerprint image collection function.
  • the screen assembly 20 can collect a user's fingerprint image and form a corresponding comparison image.
  • the electronic device 100 further includes a circuit board 30 and a control module 40 located on the circuit board 30.
  • the circuit board 30 and the control module 40 are housed inside the housing 10.
  • the control module 40 may include at least one communication interface, a bus, at least one processor, and at least one memory. At least one communication interface, at least one processor, and at least one memory can communicate with each other through a bus. At least one communication interface is used to receive and send data.
  • the screen assembly 20 is connected to one of the communication interfaces. The screen assembly 20 can transmit the data of the comparison image corresponding to the user's fingerprint image to the processor.
  • At least one memory is used to store program codes.
  • the program code includes fingerprint identification code.
  • At least one processor can be used to execute the above application code. For example, at least one processor can execute fingerprint recognition codes to realize fingerprint recognition. In this application, "at least one" includes one or two cases.
  • FIG. 2 is a schematic diagram of the structure of the screen assembly 20 of the electronic device 100 shown in FIG. 1
  • FIG. 3 is the structure of the screen assembly 20 shown in FIG. 2 at line AA.
  • Schematic diagram of the structure In an embodiment Schematic diagram of the structure.
  • the screen assembly 20 includes a display panel 1 and an identification panel 2 located on the non-light emitting side of the display panel 1.
  • the identification panel 2 and the display panel 1 are stacked.
  • the display panel 1 is used to display images.
  • the two sides of the display panel 1 are respectively a light-emitting side and a non-light-emitting side, wherein the light-emitting side is the side where the display panel 1 emits display light.
  • the recognition panel 2 includes a plurality of image sensors 21.
  • the display panel 1 includes a plurality of identification areas 11.
  • a non-recognition area 12 is formed between two adjacent and spaced recognition areas 11.
  • the photosensitive surfaces 211 of the multiple image sensors 21 are used to collect user fingerprint images located on the light emitting side of the display panel 1 in a one-to-one correspondence.
  • the photosensitive surfaces 211 of the multiple image sensors 21 are used to collect user fingerprint images located in the multiple identification areas 11 in a one-to-one correspondence.
  • the image sensor 21 can convert the captured image (light image) formed on its photosensitive surface 211 into an electrical signal that is proportional to the captured image.
  • the ratio of the total area of all recognition areas 11 to the total area of all non-recognition areas 12 is greater than or equal to 1:5.
  • the recognition panel 2 including multiple image sensors 21 is located on the non-light emitting side of the display panel 1. Therefore, the multiple image sensors 21 can collect fingerprint images under the screen, and the multiple image sensors 21 do not need to occupy the display panel 1 In the surrounding space, the area of the display panel 1 can be increased, which facilitates the narrowing of the frame of the screen assembly 20, so that the screen assembly 20 has a larger screen occupancy, and the electronic device 100 using the screen assembly 20 has a larger screen occupancy.
  • the photosensitive surfaces 211 of the multiple image sensors 21 collect partial user fingerprint images located on the light-emitting side of the multiple identification areas 11 in a one-to-one correspondence, and do not collect partial fingerprint images located on the light-emitting side of the non-recognition area 12, Therefore, the photosensitive surface 211 of the plurality of image sensors 21 collects part of the user's fingerprint image on the light-emitting side of the display panel 1, instead of collecting all of them, so that the total area of the photosensitive surface 211 of the plurality of image sensors 21 can be reduced, and the identification panel 2 and The cost of the screen assembly 20 can be reduced.
  • the ratio of the total area of all the recognition areas 11 to the total area of all the non-recognition areas 12 in the fingerprint coverage area 3 is greater than or equal to 1:5, the local fingerprints collected by the photosensitive surfaces 211 of the multiple image sensors 21
  • the total area of the image (that is, the effective collection area) can meet the minimum collection area required by the fingerprint recognition process, so that the screen assembly 20 can reduce the total area of the photosensitive surface 211 of the multiple image sensors 211 while meeting the basic recognition requirements.
  • the cost of the multiple image sensors 21 is reduced, and the production cost of the screen assembly 20 is also reduced.
  • the screen assembly 20 can meet the identification requirements and has a low cost, the screen assembly 20 can realize large-area fingerprint identification (full-screen fingerprint identification or large-screen fingerprint identification) without significantly increasing the cost. That is, the screen assembly 20 and the electronic device 100 using the screen assembly 20 can realize large-area fingerprint recognition with low cost.
  • the fingerprint coverage area 3 includes the area within the area contour. If half of the area of a certain recognition area 11 or other preset ratios (such as full, two-thirds, one-third, three-quarters, one-quarter, one-fifth, etc.) are within the area contour, the recognition area 11 is a fingerprint Cover the area within area 3.
  • the non-recognized area 12 is the area within the fingerprint coverage area 3; when the non-recognized area 12 is an integrated area (see Figure 5C below): the non-recognized area 12 is located within the area contour Is the area within the fingerprint coverage area 3.
  • the ratio of the total area of all the recognition areas 11 to the total area of all the non-recognition areas 12 is in the range of 1:2 to 2:1.
  • the range of "A" to "B” includes endpoint A and endpoint B.
  • the upper limit of the ratio of the total area of all identification areas 11 to the total area of all non-identification areas 12 in the fingerprint coverage area 3 is not strictly limited in this application.
  • the larger the ratio the higher the recognition accuracy.
  • the lower the ratio the lower the cost.
  • the ratio needs to take into account the recognition accuracy and cost.
  • the screen assembly 20 can perform well. Take into account the needs of recognition accuracy and cost.
  • the screen assembly 20 can realize full-screen fingerprint recognition.
  • the fingerprint coverage area 3 can be located anywhere in the display area of the display panel 1. That is, the entire display area of the display panel 1 can respond to the user's operation to form a corresponding fingerprint coverage area 3.
  • the screen assembly 20 can realize large-screen fingerprint recognition.
  • the fingerprint coverage area 3 may be located in a designated range of the display area of the display panel 1. For example, a part of the display area of the display panel 1 is a designated position, and this part of the area can form a corresponding fingerprint coverage area 3 in response to a user's operation.
  • the area of the designated range is relatively large.
  • the specified range can be half or more of the upper or lower screen of the screen assembly, and can be half or more of the left or right screen of the screen assembly.
  • the fingerprint coverage area responds to user operations. That is, the location of the fingerprint coverage area is customized by the user.
  • the screen assembly may sense a user's touch area, and the touch area forms the fingerprint coverage area. At this time, the shape of the fingerprint coverage area changes with the shape of the user's touch area.
  • the screen component may activate the preset fingerprint coverage area corresponding to the touch location by sensing the user's touch location, and the fingerprint coverage area covers the touch location.
  • the shape of the fingerprint coverage area 3 may be a circle, an oval, a square, a racetrack, or the like.
  • the shape of the fingerprint coverage area 3 may also be similar or the same as the shape of the user's finger.
  • the shape of the fingerprint coverage area 3 can also be customized by the user.
  • the embodiment of the present application does not strictly limit the specific shape of the fingerprint coverage area 3.
  • the shape of the fingerprint coverage area 3 in FIG. 2 is a circle as an example for illustration.
  • the embodiment of the present application also discloses a fingerprint identification method of the electronic device 100, and the method can be applied to the electronic device 100 in the embodiment of the present application.
  • the method includes:
  • Step 1 The screen component 20 captures the user's touch position and forms touch information.
  • the first touch information includes position information of the user's finger.
  • the first touch information includes position information (that is, coordinates) of the first point 311.
  • the second touch information includes location information (that is, coordinates) of the second point 321.
  • the touch layer in the screen assembly 20 can be used to step the user's touch action and form touch information.
  • Step 2 The control module 40 activates the light source corresponding to the fingerprint coverage area 3 according to the touch information.
  • the corresponding fingerprint coverage area 3 is an area covered by a preset shape with the position of the user's finger as the center or base point.
  • the corresponding fingerprint coverage area 3 is the first fingerprint coverage area 31.
  • the corresponding fingerprint coverage area 3 is the second fingerprint coverage area 32.
  • the light source of the corresponding fingerprint coverage area 3 can be the recognition area 11 and the non-recognition area 12 located in the fingerprint coverage area 3, or it can be a luminous covering the fingerprint coverage area 3. area.
  • Step 3 The control module 40 activates the photosensitive surface 211 of the image sensor 21 corresponding to the fingerprint coverage area 3 according to the touch information.
  • each image sensor 21 includes a photosensitive surface 211.
  • the photosensitive surface 211 of the image sensor 21 corresponding to the first fingerprint coverage area 31 is the photosensitive surface 211 of the four image sensors 21 used to collect the first fingerprint coverage area 31 in FIG. 2.
  • the photosensitive surface of the image sensor 21 corresponding to the second fingerprint coverage area 32 is the photosensitive surface 211 of the five image sensors 21 used to collect the second fingerprint coverage area 32 in FIG. 2.
  • the required photosensitive surfaces 211 may also be activated, and the unnecessary photosensitive surfaces 211 may not work, so as to reduce energy consumption.
  • Step 4 The control module 40 reads the comparison image data of the photosensitive surface 211 of the image sensor 21 corresponding to the fingerprint coverage area 3.
  • the compared image data corresponds to the fingerprint image of the user.
  • the control module 40 can simultaneously read the data of the photosensitive surfaces 211 of the multiple image sensors 21 corresponding to the fingerprint coverage area 3, and can also smoothly read the photosensitive surfaces of the multiple image sensors 21 corresponding to the fingerprint coverage area 3. 211 data.
  • Step 5 The control module 40 extracts and compares the feature information in the image data to match the template. If the matching is successful, the fingerprint recognition is passed, and the electronic device 100 performs subsequent corresponding operations (for example, unlocking operations such as screen unlocking, APP unlocking, payment unlocking, etc.). If the matching fails, the fingerprint recognition fails, and the electronic device 100 does not perform subsequent corresponding operations.
  • subsequent corresponding operations for example, unlocking operations such as screen unlocking, APP unlocking, payment unlocking, etc.
  • the control module 40 activates the corresponding light source and the photosensitive surface 211 of the image sensor 21 according to the user's touch position
  • the electronic device 100 only needs to activate the required part of the light source and part of the image sensor 21 during the fingerprint recognition process.
  • the photosensitive surface 211 of the image sensor can be used for image collection, and only the comparison image data formed by the photosensitive surface 211 of the image sensor 21 can be processed to realize the matching judgment. Therefore, the overall power consumption of the electronic device 100 is low, and the image is taken. Short time and fast recognition speed.
  • the area of the fingerprint coverage area 3 is in the range of 35 square millimeters to 200 square millimeters.
  • the area of the fingerprint coverage area 3 may be in the range of 64 square millimeters to 144 square millimeters.
  • the fingerprint coverage area 3 usually includes at least two identification areas 11. At this time, the area of each recognition area 11 is small.
  • the images collected by the photosensitive surface 211 of the image sensor 21 corresponding to the at least two identification regions 11 are stitched into a final comparison image. Since the comparison image is formed by stitching multiple images, the comparison image is more accurate, which is beneficial to improve the fingerprint recognition accuracy of the electronic device 100 to which the screen assembly 20 is applied.
  • the fingerprint coverage area 3 has a basic collection area
  • the smaller the area of each recognition area 11 the more the comparison images are stitched together, the higher the image quality of the comparison images, the fingerprint recognition
  • the accuracy of the image sensor 21 is higher, and the larger number of image sensors 21 also brings about the problem of high cost; and the larger the area of each recognition area 11, although the number of image sensors 21 can be reduced to reduce the cost, the comparison of the image
  • the number of spliced images included decreases, the image quality of the comparison images decreases, and the accuracy of fingerprint recognition decreases. Therefore, when designing the area of a single recognition area 11 in the embodiment of the present application, both the recognition accuracy requirement and the cost requirement need to be considered.
  • the photosensitive surface 211 of each image sensor 21 includes a plurality of sensor units arranged in an array.
  • the sensing unit may adopt a complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS) sensor, or a thin film transistor (TFT) sensor.
  • CMOS complementary metal oxide semiconductor
  • TFT thin film transistor
  • the substrate of the image sensor 21 adopts a semiconductor material.
  • the substrate of the image sensor 21 is made of insulating materials such as glass or organic medium.
  • the sensing unit in each image sensor 21 is used to sense visible light. Then, part or all of the display panel 1 allows visible light to pass through, and the display panel 1 is a transparent display screen. At this time, the visible light reflected by the user's fingerprint can enter the image sensor 21 after passing through the display panel 1, so that the screen assembly 20 can smoothly collect the user's fingerprint image.
  • the display light emitted by the display panel 1 can be used as the sensing light of the electronic device 100 in fingerprint recognition.
  • the sensing light can be collected by the image sensor 21 after being reflected by the user's fingerprint to form a comparison image corresponding to the fingerprint image.
  • the sensing unit in each image sensor 21 is used to sense invisible light. Invisible light such as near infrared, infrared, near ultraviolet, ultraviolet, etc. Then, part or all of the display panel 1 allows invisible light to pass through. At this time, the display panel 1 may allow visible light to pass through or block visible light, which is not strictly limited in this application.
  • the electronic device 100 further includes a light source for emitting invisible light.
  • the light source can be independent of the screen assembly 20 or integrated in the screen assembly 20.
  • the invisible light emitted by the light source can be collected by the image sensor 21 after being reflected by the fingerprint of the user, so that the screen assembly 20 forms a comparison image corresponding to the fingerprint image.
  • the display panel 1 may be an organic light-emitting diode (OLED) panel, a liquid crystal display (LCD), a quantum dot light emitting diode (QLED) panel, or a micro-sized light emitting diode.
  • OLED organic light-emitting diode
  • LCD liquid crystal display
  • QLED quantum dot light emitting diode
  • uLED micro-sized light emitting diode.
  • Diode micro light-emitting diode, uLED
  • a single image sensor 21 includes a photosensitive surface 211.
  • the overall volume of the image sensor 21 changes with the area of the photosensitive surface 211, and the area of the photosensitive surface 211 is designed to be small, so that the overall volume of the image sensor 21 is small, which is beneficial to reduce the cost of the image sensor 21.
  • FIG. 4 is a schematic structural diagram of the structure of the screen assembly 20 shown in FIG. 2 at the line A-A in another embodiment.
  • a single image sensor 21 includes multiple photosensitive surfaces 211.
  • multiple photosensitive surfaces 211 can be integrated into the same image sensor 21 to reduce the difficulty of the cutting process of the image sensor 21, thereby taking into account the small size and easy processing requirements of the image sensor 21.
  • the multiple photosensitive surfaces 211 of the same image sensor 21 may be arranged at intervals or adjacent to each other.
  • the plurality of photosensitive surfaces 211 may be coplanar.
  • each recognition area 11 may be the same or different. This application will be described by taking as an example that the shapes and areas of the recognition regions 11 are the same.
  • the arrangement of the plurality of recognition areas 11 may be regular or random.
  • the arrangement of the multiple identification areas 11 can be described as an example.
  • FIG. 5A is a partial structural diagram of the display panel 1 of the screen assembly 20 shown in FIG. 2 in an embodiment.
  • the recognition area 11 is shown as a square filled with oblique lines
  • the non-recognition area 12 is shown as a square without filling.
  • the plurality of identification regions 11 are arranged in rows at intervals in the first direction X, and arranged in rows at intervals in the second direction Y, and the second direction Y is perpendicular to the first direction X.
  • Each of the identification regions 11 in the two adjacent rows of identification regions 11 are arranged in different columns.
  • the recognition areas 11 in the two adjacent columns of recognition areas 11 are all arranged in different columns.
  • first direction X may be parallel to the width direction of the screen assembly 20 (also called lateral direction), and the second direction Y is parallel to the length direction of the screen assembly 20 (also called vertical direction). In other embodiments, the first direction X and the second direction Y can be reversed.
  • the identification areas 11 of odd rows are arranged in odd columns, and the identification areas 11 of even rows are arranged in even columns.
  • Row 1, row 3, row 5, row 7, and row 9 are odd rows.
  • Rows 2, 4, 6, 8, and 10 are even-numbered rows.
  • the first, third, fifth, seventh, and ninth columns are odd columns.
  • the second, fourth, sixth, eighth, and tenth columns are even-numbered columns.
  • the odd-numbered row identification areas 11 can also be arranged in even-numbered columns, and the even-numbered row identification areas 11 are arranged in odd-numbered columns.
  • the number of identification areas 11 included in any two fingerprint coverage areas 3 with different positions of the screen assembly 20 is very close, that is, the photosensitive surface 211 of the image sensor 21 corresponding to the two fingerprint coverage areas 3
  • the numbers are very similar, and the screen assembly 20 can obtain a sufficient effective collection area in different usage scenarios, so that the fingerprint recognition accuracy of the electronic device 100 is higher.
  • the ratio of the total area of all identification areas 11 to the total area of all non-identification areas is in the range of 1:0.8 to 1:1.2.
  • the distance between two adjacent identification areas 11 may be equal to, slightly greater than, or slightly less than the length of the identification area 11.
  • the distance between two adjacent identification areas 11 may also be equal to, slightly greater than, or slightly less than the length of the identification area 11.
  • the screen assembly 20 can comprehensively consider the requirements of manufacturing tolerances, assembly tolerances, total image collection area, cost, etc., to obtain higher product yield, fingerprint recognition accuracy, and lower cost.
  • FIG. 5B is a schematic diagram of the recognition area 11 and the non-recognition area 12 of the display panel 1 shown in FIG. 5A in an arrangement.
  • the recognition area 11 is indicated by a grid filled with oblique lines
  • the non-recognition area 12 is indicated by an unfilled space.
  • the display panel 1 includes a plurality of non-recognition areas 12, and the multiple non-recognition areas 12 are separated by the recognition area 11.
  • the length L1 of each identification area 11 is equal to the distance L2 between two adjacent identification areas 11.
  • the distance L2 is equal to the length of the non-identification area 12 in the first direction X.
  • the length L3 of each identification area 11 is equal to the distance L4 between two adjacent identification areas 11.
  • the interval L4 is equal to the length of the non-identification area 12 in the second direction Y.
  • the shape and size of the non-recognition area 12 are the same as the recognition area 11.
  • the circular fingerprint coverage area 3 is taken as an example in FIG. 5A for illustration.
  • the size of each recognition area 11 is 3 mm*3 mm.
  • the fingerprint coverage area 3 is a circular area with a diameter of 9 mm.
  • the third fingerprint coverage area 33 four identification areas 11 are included.
  • the photosensitive surfaces 211 of the four image sensors 21 in the identification panel 2 corresponding to the four identification areas 11 are used to collect user fingerprint images.
  • the effective collection area is 36 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the fourth fingerprint coverage area 34 five identification areas 11 are included.
  • the photosensitive surfaces 211 of the five image sensors 21 in the identification panel 2 corresponding to the five identification areas 11 are used to collect user fingerprint images.
  • the effective collection area is 45 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the number of photosensitive surfaces 211 of the image sensor 21 corresponding to any two fingerprint coverage areas 3 with different positions of the screen assembly 20 is very similar, and the screen assembly 20 can obtain sufficient effective collection area in different usage scenarios. .
  • FIG. 5C is a schematic diagram of the recognition area 11 and the non-recognition area 12 of the display panel 1 shown in FIG. 5A in another arrangement.
  • the recognition area 11 is indicated by a grid filled with oblique lines
  • the non-recognition area 12 is indicated by an unfilled space.
  • the non-identification area 12 is an integral area.
  • the length L1 of each identification area 11 is smaller than the distance L2 between two adjacent identification areas 11.
  • the distance L2 is the length in the first direction X of the part of the non-recognition area 12 located between two adjacent recognition areas 11.
  • the length L3 of each identification area 11 is smaller than the distance L4 between two adjacent identification areas 11.
  • the distance L4 is the length in the second direction Y of a part of the non-recognition area 12 located between two adjacent recognition areas 11.
  • FIG. 5D is a schematic diagram of the recognition area 11 and the non-recognition area 12 of the display panel 1 shown in FIG. 5A in another arrangement.
  • the recognition area 11 is indicated by a grid filled with oblique lines
  • the non-recognition area 12 is indicated by an unfilled space.
  • the display panel 1 includes a plurality of non-recognition areas 12, and the multiple non-recognition areas 12 are separated by the recognition area 11.
  • the length L1 of each identification area 11 is greater than the distance L2 between two adjacent identification areas 11.
  • the distance L2 is the length of the non-identification area 12 in the first direction X.
  • the length L3 of each identification area 11 is greater than the distance L4 between two adjacent identification areas 11.
  • the distance L4 is the length of the non-identification area 12 in the second direction Y.
  • the shape of the non-recognition area 12 is the same or similar to the recognition area 11, and the area of the non-recognition area 12 is smaller than the area of the recognition area 11. In this embodiment, there is a small amount of redundancy in the image formed after the images on the multiple recognition regions 11 are spliced, and can be processed into a suitable comparison image to improve the accuracy of fingerprint recognition of the electronic device 100.
  • FIG. 6A is a partial structural diagram of the display panel 1 of the screen assembly 20 shown in FIG. 2 in another embodiment.
  • the identification area 11 in FIG. 6A is shown as a square filled with oblique lines, and the non-recognition area 12 is shown as a square without filling.
  • a plurality of identification areas 11 are arranged at intervals in the first direction X. That is, in the first direction X, non-recognition areas 12 are arranged between any two adjacent recognition areas 11. At this time, in the first direction X, the distance between any two adjacent identification areas 11 has a first size, and the length of each identification area 11 has a second size.
  • the first size is also the length in the first direction X of the part of the non-recognition area 12 located between the two recognition areas 11.
  • the first size may be greater than, equal to, or smaller than the second size, and the embodiment of the present application does not strictly limit the size relationship between the two.
  • a plurality of identification regions 11 are continuously arranged in a row in the second direction Y, and the second direction Y is perpendicular to the first direction X.
  • the two identification regions 11 adjacent to each other in the second direction Y are adjacent to each other. That is, the distance between two identification areas 11 adjacent to each other in the second direction Y (which can be zero, negative or positive) is much smaller than the two identification areas 11 adjacent to each other in the first direction X the distance between.
  • the display panel 1 includes a plurality of non-recognition areas 12. Any two adjacent rows of identification regions 11 form a strip-shaped non-identification region 12 between them.
  • the plurality of identification areas 11 may also be arranged in other ways in the second direction Y, for example, arranged at intervals.
  • a circular fingerprint coverage area 3 is taken as an example for illustration.
  • the size of each recognition area 11 is 2 mm*2 mm.
  • the fingerprint coverage area 3 is a circular area with a diameter of 10 mm.
  • the fifth fingerprint coverage area 35 includes 10 identification areas 11.
  • the photosensitive surfaces 211 of the ten image sensors 21 in the identification panel 2 corresponding to the ten identification regions 11 are used to collect user fingerprint images.
  • the effective collection area is 40 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the sixth fingerprint coverage area 36 includes 15 identification areas 11.
  • the photosensitive surfaces 211 of the 15 image sensors 21 in the recognition panel 2 corresponding to the 15 recognition areas 11 are used to collect user fingerprint images.
  • the effective collection area is 60 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the image sensors corresponding to the two fingerprint coverage areas 3 is the same or similar, thereby ensuring that the screen assembly 20 can obtain a sufficient effective collection area in different usage scenarios, so that the fingerprint recognition accuracy of the electronic device 100 is high.
  • FIG. 6B is a partial structural diagram of the display panel 1 of the screen assembly 20 shown in FIG. 2 in still another embodiment.
  • the identification area 111 in FIG. 6C is shown as a square filled with oblique lines, and the non-recognition area 112 is shown as a square without filling.
  • the multiple identification areas 111 are arranged at intervals in the first direction. That is, in the first direction, at least one non-recognition area 112 is arranged between any two adjacent recognition areas 111.
  • the first direction is the row direction or the column direction of the area array formed by the plurality of areas 11.
  • the plurality of identification areas 111 and the plurality of non-identification areas 112 may be alternately arranged one by one, alternately arranged one by two, or alternately arranged two by one, which is not strictly limited in this application.
  • the plurality of identification regions 111 are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction. That is, in the second direction, at least one non-recognition area 112 is arranged between any two adjacent recognition areas 111.
  • the first size is larger than the second size, for example, the first size is equal to twice the second size.
  • the third size is greater than the fourth size, for example, the third size is equal to twice the fourth size.
  • the plurality of identification regions 11 are continuously arranged in the diagonal direction of the first direction X and the second direction Y.
  • the display panel 1 includes a plurality of non-recognition areas 12. A non-recognition area 12 is formed between two adjacent recognition areas 11 in the diagonal direction.
  • the non-recognition area 12 is roughly in the shape of a stepped bar.
  • each area 11 is 2 mm*2 mm.
  • the fingerprint coverage area 3 is a circular area with a diameter of 10 mm.
  • eight identification areas 11 are included.
  • the photosensitive surfaces 211 of the eight image sensors 21 in the identification panel 2 corresponding to the eight identification areas 11 are used to collect user fingerprint images.
  • the effective collection area is 32 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the eighth fingerprint coverage area 38 nine identification areas 11 are included.
  • the photosensitive surfaces 211 of the nine image sensors 21 in the identification panel 2 corresponding to the nine identification areas 11 are used to collect user fingerprint images. At this time, the effective collection area is 36 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the image sensor 21 corresponding to the two fingerprint coverage areas 3 located at different positions of the display panel 1 The number of the surfaces 211 is the same or more similar, which further ensures that the screen assembly 20 can obtain a sufficient effective collection area in different usage scenarios, so that the fingerprint recognition accuracy of the electronic device 100 is higher.
  • the arrangement of the multiple identification areas 11 and the multiple non-identification areas 12 in the first direction is the same as the arrangement in the second direction. At this time, the reliability of the screen assembly 20 to obtain a sufficient effective collection area under different usage scenarios is higher, and the fingerprint recognition accuracy of the electronic device 100 is higher.
  • the arrangement of the multiple identification areas 11 in the first direction and the arrangement in the second direction may also be different.
  • FIG. 6C is a partial structural diagram of the display panel 1 of the screen assembly 20 shown in FIG. 2 in still another embodiment.
  • the recognition area 11 is shown as a square filled with oblique lines
  • the non-recognition area 12 is shown as a square without filling.
  • the multiple identification areas 11 include multiple identification area groups 13.
  • Each recognition area group 13 includes at least two recognition areas 11 adjacent to each other. Any adjacent two identification area groups 13 are arranged at intervals from each other. Wherein, at least two identification areas 11 being adjacent to each other means that the distance between two adjacent identification areas 11 of the same identification area group 13 is much smaller than the distance between two adjacent identification area groups 13.
  • a non-recognition area 12 is formed between any two adjacent recognition area groups 13.
  • the plurality of identification area groups 13 are arranged at intervals in the first direction X, and arranged at intervals or continuously in the second direction Y, and the second direction Y is perpendicular to the first direction X.
  • each recognition area group 13 includes four recognition areas 11 arranged in an array, two of the four recognition areas 11 are arranged in the first direction X, and the other two are arranged in the first direction X.
  • the non-recognition area of the display panel 1 is a 12-bit integrated area.
  • non-recognition areas 12 are arranged between two adjacent recognition area groups 13.
  • non-recognition areas 12 are arranged between two adjacent recognition area groups 13.
  • each recognition area 11 is 2 mm * 2 mm.
  • the fingerprint coverage area 3 is a circular area with a diameter of 10 mm.
  • 16 identification areas 11 are included.
  • the photosensitive surfaces 211 of the 16 image sensors 21 in the identification panel 2 corresponding to the 16 identification areas 11 are used to collect user fingerprint images.
  • the effective collection area is 64 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • the tenth fingerprint coverage area 310 nine identification areas 11 are included.
  • the photosensitive surfaces 211 of the nine image sensors 21 in the identification panel 2 corresponding to the nine identification areas 11 are used to collect user fingerprint images. At this time, the effective collection area is 36 square millimeters, which can meet the minimum collection area requirements for fingerprint identification.
  • each recognition area group 13 includes at least two recognition areas 11, and any two adjacent recognition area groups 13 are spaced apart from each other, the arrangement of the recognition areas 11 is more diversified, which is beneficial to Meet the fingerprint identification requirements of different electronic devices 100.
  • Each recognition area group 13 includes at least two recognition areas 11, which also enables the recognition area 11 to collect continuous images in a small area, so that the final comparison image formed by the screen assembly 20 is composed of at least two continuous images. , The final comparison image is easier to compare with the standard image in the electronic device 100, and the fingerprint recognition accuracy of the electronic device 100 is higher.
  • the number of identification areas 11 included in the identification area group 13 and the arrangement of the identification areas 11 in the identification area group 13 may all have other setting methods, which are not strictly limited in this application.
  • the fingerprint coverage area 3 includes at least two identification area groups 13.
  • the final comparison image formed by the screen assembly 20 is formed by stitching together the images collected by at least two identification area groups 13.
  • the image quality is high, so that the fingerprint recognition accuracy of the electronic device 100 using the screen assembly 20 is high. .
  • FIG. 7 is a schematic structural diagram of the screen assembly 20 shown in FIG. 3 in the first embodiment.
  • a single image sensor 21 includes one photosensitive surface 211 as an example for description.
  • a single image sensor 21 may also include multiple photosensitive surfaces 211.
  • Other features of this embodiment can be set with reference to the first embodiment, and will not be repeated here.
  • the identification panel 2 further includes a substrate 22 and an optical layer 23.
  • the substrate 22 is located on the non-light emitting side of the display panel 1.
  • a plurality of image sensors 21 are fixed on the side of the substrate 22 facing the display panel 1.
  • the photosensitive surface 211 of each image sensor 21 is arranged away from the substrate 22, that is, arranged facing the display panel 1.
  • the optical layer 23 is located between the plurality of image sensors 21 and the display panel 1.
  • the optical layer 23 is used for imaging the user fingerprint image located on the light-emitting side of the identification area 11 onto the corresponding photosensitive surface 211 of the image sensor 21.
  • the screen assembly 20 processes the light reflected by the user's fingerprint through the optical layer 23 to form a corresponding collection image on the photosensitive surface 211 of the corresponding image sensor 21, and the collection image corresponds to the user's fingerprint image.
  • the optical layer 23 can change the light state, so the structure and size of the optical layer 23 can be set so that the photosensitive surface 211 of the image sensor 21 is opposite to the display panel 1.
  • the change of the positional relationship makes the structure of the screen assembly 20 more diversified, and the application range of the screen assembly 20 is wider.
  • the arrangement positions of the photosensitive surfaces 211 of the plurality of image sensors 21 correspond to the arrangement positions of the plurality of identification regions 11.
  • the photosensitive surfaces 211 of the multiple image sensors 21 can collect fingerprint images located on the multiple identification areas 11 in a one-to-one correspondence.
  • the optical layer 23 changes the propagation direction of the light slightly, which can reduce the risk that the light is distorted during the propagation process and the final comparison image has insufficient accuracy, so that the fingerprint of the electronic device 100 using the screen assembly 20 The recognition accuracy is high.
  • a single image sensor 21 may include one photosensitive surface 211 (as shown in FIG. 7), or may include multiple photosensitive surfaces 211 (see FIG. 4).
  • the optical layer 23 can change the propagation direction of light, so the relative positional relationship between the photosensitive surfaces 211 of the multiple image sensors 21 may be slightly different from the relative positional relationship of the multiple identification regions 11.
  • the propagation direction of light can be changed through the optical layer 23, so that the photosensitive surface 211 of a single image sensor 21 can simultaneously collect fingerprint images on two or more identification areas 11. Then, the total number of image sensors 21 is less than the total number of recognition areas 11, so that the cost of the screen assembly 20 is lower.
  • a single image sensor 21 includes a plurality of photosensitive surfaces 211, and the plurality of photosensitive surfaces 211 are adjacent to each other.
  • the plurality of identification regions 11 corresponding to the plurality of photosensitive surfaces 211 are spaced apart from each other.
  • the propagation direction of the light is changed by the optical layer 23, so that the light entering from the identification areas 11 is converged and injected into a plurality of photosensitive surfaces 211 adjacent to each other, thereby realizing image collection.
  • the substrate 22 may be a rigid printed circuit board (printed circuit board, PCB).
  • the substrate 22 may include a flexible printed circuit (FPC) and a reinforcement board, and the reinforcement board and the flexible printed circuit board are laminated.
  • PCB printed circuit board
  • FPC flexible printed circuit
  • the multiple image sensors 21 can be directly bonded to the substrate 22 in a die attach manner.
  • a plurality of image sensors 21 may be connected to form an integrated package structure using a fan-out process, and then the package structure is integrally bonded to the substrate 22.
  • the identification panel 2 further includes a package 24.
  • the package 24 is located on the side of the substrate 22 facing the display panel 1 and is arranged around the plurality of image sensors 21. At this time, the package 24 encapsulates the plurality of image sensors 21 into an integrated package structure. Among them, the package 24 may use a fan-out process to package multiple image sensors 21.
  • the optical layer 23 covers the package 24 and the plurality of image sensors 21. At this time, the optical layer 23 may be an integral structure.
  • the package 24 can first encapsulate a plurality of image sensors 21 into an integrated package structure, and then attach the package structure to the substrate 22, and then cover the optical layer 23 of the same integrated structure on the package. 24 and a plurality of image sensors 21, so the assembly process steps of the screen assembly 20 are few and the process difficulty is low, which is beneficial to reduce the production cost of the screen assembly 20.
  • the package 24 can be made of light-shielding materials to reduce the risk of poor image quality due to cross-light.
  • FIG. 8A is a schematic structural diagram of the screen assembly 20 shown in FIG. 7 in the first embodiment.
  • the optical layer 23 includes a plurality of collimators 231.
  • the collimator 231 is used to convert the divergent light into collimated light.
  • the plurality of collimators 231 are arranged to face the photosensitive surfaces 211 of the plurality of image sensors 21 in a one-to-one correspondence.
  • a plurality of collimators 231 form a collection image with a ratio of 1:1 on the photosensitive surface 211 of the image sensor 21. Since the multiple collimators 231 can collimate the light reflected by the user's fingerprint, the image quality of the captured image is high, and the screen assembly 20 can form a high-quality comparison image, thereby enabling fingerprint recognition of the electronic device 100 The accuracy is high.
  • the area of the photosensitive surface 211 of the image sensor 21 is similar to the area of the identification area 11 on the display panel 1. Considering the tolerances of the multiple image sensors 21 during assembly, a reasonable escape can be reserved between the two image sensors 21 that are close to each other, so as to improve the assembly accuracy of the screen assembly 20 and the product yield. At this time, the area of the recognition area 11 is appropriately reduced accordingly.
  • the package 24 may first package a plurality of image sensors 21 and then assemble the optical layer 23.
  • the optical layer 23 may be an integrated structure including a plurality of collimators 231.
  • each collimator 231 may be a thin film with a collimating hole formed first, and then each collimator 231 is attached to the photosensitive surface 211 of the corresponding image sensor 21.
  • a plurality of collimators 231 are integrally formed in the same film.
  • the optical layer 23 may also include a substrate and a light blocking film.
  • the base adopts light-transmitting material.
  • the light blocking film is laminated on the substrate.
  • the light blocking film has multiple sets of collimating holes, and each set of collimating holes forms a collimator 231 correspondingly.
  • FIG. 8B is a schematic structural diagram of the screen assembly 20 shown in FIG. 7 in the second embodiment.
  • the optical layer 23 includes a plurality of light-transmitting holes 232.
  • the optical layer 23 may include a substrate 2321 and a light shielding film 2322.
  • the base 2321 may be an integrally formed structure.
  • the light shielding film 2322 may also be an integrally formed structure.
  • the light shielding film 2322 is located on the side of the substrate 2321 facing the display panel 1.
  • the substrate 2321 is made of a light-transmitting material, such as glass or polycarbonate (PC).
  • the light-shielding film 2322 has a plurality of light-transmitting small holes 232.
  • the light-shielding film 2322 uses a light-shielding material.
  • the plurality of light-transmitting small holes 232 are arranged directly opposite to the photosensitive surface 211 of the plurality of image sensors 21 in one-to-one correspondence.
  • a first distance S1 is formed between the center of each light-transmitting hole 232 and the light-emitting surface 13 of the display panel 1
  • a second distance S2 is formed between the center of each light-transmitting hole 232 and the photosensitive surface 211 of the image sensor 21.
  • the first distance S1 is greater than the second distance S2. .
  • the distance between the center of each light-transmitting hole 232 and the light-emitting surface 13 of the display panel 1 is greater than the distance between the center of each light-transmitting hole 232 and the photosensitive surface 211 of the image sensor 21.
  • a plurality of light-transmitting small holes 232 are formed on the photosensitive surface 211 of the image sensor 21 to form a collection image with an object image ratio X:1.
  • X is greater than 1.
  • the area of the captured image is smaller than the area of the identification area 11 on the display panel 1. Therefore, when the area of the identification area 11 remains the same, the area of the photosensitive surface 211 of the image sensor 21 can be reduced, resulting in the cost of the image sensor 21 Reduced, the cost of the screen assembly 20 is reduced.
  • the area of the photosensitive surface 211 of the image sensor 21 is unchanged, the area of the recognition area 11 corresponding to the image sensor 21 is increased, and the splicing of multiple recognition areas 11 can be redundant splicing, thereby improving the performance of the electronic device 100 Accuracy of fingerprint recognition.
  • the screen assembly 20 can reduce the area of the photosensitive surface 211 of the image sensor 21 or increase the area of the recognition area 11 corresponding to the photosensitive surface 211 of the image sensor 21 by adjusting the sizes of the first spacing S1 and the second spacing S2.
  • the light-emitting surface 13 of the display panel 1 is the surface of the display panel 1 away from the identification panel 2.
  • the non-light-emitting surface 14 of the display panel 1 is opposite to the light-emitting surface 13 of the display panel 1.
  • a distance S3 is formed between the non-light-emitting surface 14 of the display panel 1 and the center of the light-transmitting hole 232.
  • the size of the first spacing S1 can be adjusted by adjusting the size of the spacing S3.
  • the base 2321 of the optical layer 23 has a thickness (a dimension in a direction perpendicular to the photosensitive surface 211 of the image sensor 21).
  • the size of the second gap S2 can be adjusted by adjusting the thickness of the substrate 2321.
  • the screen assembly 20 further includes a transparent adhesive layer 25.
  • the adhesive layer 25 is bonded between the display panel 1 and the optical layer 23.
  • an adhesive layer 25 is filled between the display panel 1 and the optical layer 23.
  • the adhesive layer 25 can bond the optical layer 23 and the display panel 1, and can also prevent light from affecting the quality of the captured image due to the scattering of the air layer.
  • the adhesive layer 25 can be a transparent optical glue.
  • FIG. 8C is a schematic structural diagram of the screen assembly 20 shown in FIG. 7 in the third embodiment.
  • the optical layer 23 includes a plurality of lenses 233.
  • the plurality of lenses 233 are arranged to face the photosensitive surfaces 211 of the plurality of image sensors 21 in a one-to-one correspondence.
  • the lens 233 is used to image and reduce the fingerprint image of the user to the photosensitive surface 211 of the image sensor 21.
  • the lens 233 is used to collect light.
  • the optical layer 23 also includes a fixed substrate 234, and the fixed substrate 234 is made of a transparent material. A plurality of lenses 233 are fixed on the fixed substrate 234 to form an integral structure with the fixed substrate 234.
  • the lens 233 is used to image and reduce the fingerprint image of the user to the photosensitive surface 211 of the image sensor 21.
  • the area ratio of the captured image formed on the photosensitive surface 211 of the image sensor 21 to the corresponding recognition area 11 is less than 1. , That is, the object-image ratio is greater than 1.
  • the area of the captured image is smaller than the area of the identification area 11 on the display panel 1. Therefore, when the area of the identification area 11 remains the same, the area of the photosensitive surface 211 of the image sensor 21 can be reduced, resulting in the cost of the image sensor 21 Reduced, the cost of the screen assembly 20 is reduced.
  • the area of the photosensitive surface 211 of the image sensor 21 is unchanged, the area of the recognition area 11 corresponding to the image sensor 21 is increased, and the splicing of multiple recognition areas 11 can be redundant splicing, thereby improving the performance of the electronic device 100 Accuracy of fingerprint recognition.
  • a single lens 233 may include one or more sub-lenses.
  • the single lens 233 includes one sub-lens, which is a convex lens.
  • the single lens 233 includes multiple sub-lens, and the multiple sub-lens may be multiple convex lenses, or a combination of concave and convex lenses.
  • the lens 233 may also be a plane lens made of a metamaterial structure.
  • FIG. 9 is a schematic structural diagram of the screen assembly 20 shown in FIG. 3 in the second embodiment.
  • a single image sensor 21 includes one photosensitive surface 211 as an example for description.
  • a single image sensor 21 may also include multiple photosensitive surfaces 211.
  • Other features of this embodiment can be set with reference to the second embodiment, and will not be repeated here.
  • the optical layer 23 includes a plurality of optical parts 230.
  • the plurality of optical parts 230 are spaced apart from each other.
  • the plurality of optical parts 230 are located on the side of the corresponding image sensor 21 where the image is collected, that is, located above the photosensitive surface 211 of the image sensor 21.
  • the plurality of optical parts 230 are located on the plurality of image sensors 21 in one-to-one correspondence.
  • a single image sensor 21 includes a plurality of photosensitive surfaces 211
  • a plurality of optical parts 230 may also be provided on one image sensor 21, and the plurality of optical parts 230 are arranged on the plurality of photosensitive surfaces 211 in a one-to-one correspondence.
  • the identification panel 2 further includes a plurality of packages 26.
  • the plurality of packages 26 and the plurality of optical parts 230 are arranged in one-to-one correspondence.
  • Each package body 26 is used to package the corresponding optical portion 230 and the image sensor 21 into an integral unit assembly 27.
  • the identification panel 2 also includes a package 24.
  • the package 24 is located on the side of the substrate 22 facing the display panel 1 and is arranged around the plurality of image sensors 21 and the plurality of optical parts 230.
  • the image sensor 21 and the optical part 230 located above may first form a unit assembly 27. After the plurality of unit assemblies 27 are fixed to the substrate 22, the plurality of unit assemblies 27 and the substrate 22 are connected by the package 24. Packaged into a one-piece structure.
  • the image sensor 21 and the optical part 230 located above may first form the unit assembly 27, and after the multiple unit assemblies 27 are packaged into an integrated structure by the packaging member 24, the structure is attached to the substrate 22 to complete the assembly.
  • the corresponding optical portion 230 and the image sensor 21 can form a unit assembly 27, and then a plurality of unit assemblies 27 are fixed to the substrate 22 according to specific arrangement requirements, so the screen assembly 20 can be made without changing the material.
  • the position of the unit assembly 27 to form different identification panels 2 it is beneficial to the batch and multi-model of the screen assembly 20.
  • the material of the package body 26 in the unit assembly 27 can be the same as or different from the material of the package 24, which is not strictly limited in this application.
  • one or both of the package body 26 and the package member 24 use light-shielding materials to reduce the risk of poor quality of the captured image due to cross-light.
  • FIG. 10A is a schematic structural diagram of the screen assembly 20 shown in FIG. 9 in the first embodiment.
  • the optical layer 23 includes a plurality of collimators 231.
  • the plurality of collimators 231 are arranged to face the photosensitive surfaces 211 of the plurality of image sensors 21 in a one-to-one correspondence.
  • the plurality of collimators 231 are spaced apart from each other.
  • Each optical part 230 includes one collimator 231 (corresponding to a solution in which a single sensor 21 includes one photosensitive surface 211) or multiple collimators 231 (corresponding to a solution in which a single sensor 21 includes multiple photosensitive surfaces 211).
  • the collimator 231 is used to convert the divergent light into collimated light.
  • the corresponding image sensor 21 and the optical part 230 may be formed into the unit assembly 27 first, and then packaged by the package 24. That is, the package body 26 first fixes the collimator 231 to the corresponding image sensor 21 to form an integrated and modular unit assembly 27. Then, a plurality of unit assemblies 27 are fixed to the substrate 22 through the package 24 to form the identification panel 2.
  • a plurality of collimators 231 form a collection image with a ratio of 1:1 on the photosensitive surface 211 of the image sensor 21. Since the multiple collimators 231 can collimate the light reflected by the user's fingerprint, the image quality of the captured image is high, and the screen assembly 20 can form a high-quality comparison image, thereby enabling fingerprint recognition of the electronic device 100 The accuracy is high.
  • the area of the photosensitive surface 211 of the image sensor 21 is similar to the area of the identification area 11 on the display panel 1. Considering the tolerances of the multiple image sensors 21 during assembly, a reasonable escape can be reserved between the two image sensors 21 that are close to each other, so as to improve the assembly accuracy of the screen assembly 20 and the product yield. At this time, the area of the recognition area 11 is appropriately reduced accordingly.
  • each collimator 231 can be directly formed on the photosensitive surface 211 of the image sensor 21 through a wafer level processing process.
  • a multi-layer mask process may be used to deposit or etch the collimator hole structure on the photosensitive surface 211 of the image sensor 21 to form the collimator 231.
  • FIG. 10B is a schematic structural diagram of the screen assembly 20 shown in FIG. 9 in the second embodiment.
  • the optical layer 23 includes a plurality of light-transmitting holes 232.
  • the optical layer 23 may include a substrate 2321 and a light shielding film 2322, and the light shielding film 2322 is located on the side of the substrate 2321 facing the display panel 1.
  • the substrate 2321 is made of a light-transmitting material, such as glass or polycarbonate (PC).
  • the light-shielding film 2322 has a plurality of light-transmitting small holes 232.
  • the light-shielding film 2322 uses a light-shielding material.
  • a plurality of light-transmitting small holes 232 are arranged directly opposite to the photosensitive surface 211 of the plurality of image sensors 21 in a one-to-one correspondence.
  • the substrate 2321 includes a plurality of substrate portions 2323, and the plurality of substrate portions 2323 are spaced apart from each other.
  • the plurality of base portions 2323 are arranged facing the plurality of image sensors 21 in a one-to-one correspondence.
  • the light-shielding film 2322 includes a plurality of light-shielding parts 2324, the light-shielding parts 2324 are spaced apart from each other, and each light-shielding part 2324 is provided with a light-transmitting hole 232.
  • the number of light-transmitting holes 232 is the same as the number of the corresponding photosensitive surfaces 211 on the image sensor 21.
  • the light shielding parts 2324 are located on the base parts 2323 in a one-to-one correspondence. Each light shielding portion 2324 and the base portion 2323 are fixed to the corresponding image sensor 21 through the package body 26 to form an integrated and modular unit assembly 27.
  • a first distance S1 is formed between the center of each light-transmitting hole 232 and the light-emitting surface 13 of the display panel 1, and a second distance S2 is formed between the center of each light-transmitting hole 232 and the photosensitive surface 211 of the image sensor 21.
  • the first distance S1 is greater than the second distance S2. .
  • the distance between the center of each light-transmitting hole 232 and the light-emitting surface 13 of the display panel 1 is greater than the distance between the center of each light-transmitting hole 232 and the photosensitive surface 211 of the image sensor 21.
  • a plurality of light-transmitting small holes 232 are formed on the photosensitive surface 211 of the image sensor 21 to form a collection image with an object image ratio X:1.
  • X is greater than 1.
  • the area of the captured image is smaller than the area of the identification area 11 on the display panel 1. Therefore, when the area of the identification area 11 remains the same, the area of the photosensitive surface 211 of the image sensor 21 can be reduced, resulting in the cost of the image sensor 21 Reduced, the cost of the screen assembly 20 is reduced.
  • the area of the photosensitive surface 211 of the image sensor 21 is unchanged, the area of the recognition area 11 corresponding to the image sensor 21 is increased, and the splicing of multiple recognition areas 11 can be redundant splicing, thereby improving the performance of the electronic device 100 Accuracy of fingerprint recognition.
  • the screen assembly 20 can reduce the area of the photosensitive surface 211 of the image sensor 21 or increase the area of the recognition area 11 corresponding to the image sensor 21 by adjusting the sizes of the first spacing S1 and the second spacing S2.
  • the light-emitting surface 13 of the display panel 1 is the surface of the display panel 1 away from the identification panel 2.
  • the non-light-emitting surface 14 of the display panel 1 is opposite to the light-emitting surface 13 of the display panel 1.
  • a distance S3 is formed between the non-light-emitting surface 14 of the display panel 1 and the center of the light-transmitting hole 232.
  • the size of the first spacing S1 can be adjusted by adjusting the size of the spacing S3.
  • the base 2321 of the optical layer 23 has a thickness (a dimension in a direction perpendicular to the photosensitive surface 211 of the image sensor 21).
  • the size of the second gap S2 can be adjusted by adjusting the thickness of the substrate 2321.
  • the screen assembly 20 further includes a transparent adhesive layer 25, and the adhesive layer 25 is bonded between the display panel 1 and the optical layer 23.
  • an adhesive layer 25 is filled between the display panel 1 and the optical layer 23.
  • the adhesive layer 25 can bond the optical layer 23 and the display panel 1, and can also prevent light from affecting the quality of the captured image due to the scattering of the air layer.
  • the adhesive layer 25 can be a transparent optical glue.
  • the adhesive layer 25 can also cover the package 24 at the same time.
  • FIG. 10C is a schematic structural diagram of the screen assembly 20 shown in FIG. 9 in the third embodiment.
  • the optical layer 23 includes a plurality of lenses 233.
  • the plurality of lenses 233 are arranged to face the photosensitive surfaces 211 of the plurality of image sensors 21 in a one-to-one correspondence.
  • Each optical part 230 includes one lens 233 (corresponding to a scheme in which a single sensor 21 includes one photosensitive surface 211) or a plurality of lenses 233 (corresponding to a scheme in which a single sensor 21 includes a plurality of photosensitive surfaces 211).
  • the lens 233 is used to image and reduce the fingerprint image of the user to the photosensitive surface 211 of the image sensor 21.
  • the lens 233 is used to collect light.
  • the lens 233 can be fixed to the corresponding image sensor 21 through the package body 26 to form an integrated and modular unit assembly 27.
  • the lens 233 is used to image and reduce the fingerprint image of the user to the photosensitive surface 211 of the image sensor 21.
  • the area ratio of the captured image formed on the photosensitive surface 211 of the image sensor 21 to the corresponding recognition area 11 is less than 1. , That is, the object-image ratio is greater than 1.
  • the area of the captured image is smaller than the area of the identification area 11 on the display panel 1. Therefore, when the area of the identification area 11 remains the same, the area of the photosensitive surface 211 of the image sensor 21 can be reduced, resulting in the cost of the image sensor 21 Reduced, the cost of the screen assembly 20 is reduced.
  • the area of the photosensitive surface 211 of the image sensor 21 is unchanged, the area of the recognition area 11 corresponding to the image sensor 21 is increased, and the splicing of multiple recognition areas 11 can be redundant splicing, thereby improving the performance of the electronic device 100 Accuracy of fingerprint recognition.
  • a single lens 233 may include one or more sub-lenses.
  • the single lens 233 includes one sub-lens, which is a convex lens.
  • the single lens 233 includes multiple sub-lens, and the multiple sub-lens may be multiple convex lenses, or a combination of concave and convex lenses.
  • the lens 233 may also be a plane lens made of a metamaterial structure.

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Abstract

一种屏组件（20）和电子设备（100），屏组件（20）包括显示面板（1）及位于显示面板（1）非出光侧的识别面板（2），显示面板（1）包括多个识别区域（11），相邻且彼此间隔的两个识别区域（11）之间形成非识别区域（12），识别面板（2）包括多个图像传感器（21），多个图像传感器（21）的感光面用于一一对应地采集位于多个识别区域（11）的用户指纹图像；在指纹覆盖区域中，所有识别区域（11）的总面积与所有非识别区域（12）的总面积的比大于或等于1：5。上述屏组件（20）能够实现大面积指纹识别且成本较低。

Description

屏组件及电子设备
本申请要求在2019年2月20日提交中国国家知识产权局、申请号为201910127499.5、发明名称为“屏组件及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及电子产品技术领域，尤其涉及一种屏组件以及一种电子设备。
背景技术
目前的智能手机通常搭载有用于实现指纹识别的图像传感器。图像传感器的成本与其感光面面积相关，面积越大则成本越高，导致具有大屏指纹识别功能的智能手机的成本高居不下。
发明内容
本申请实施例提供一种屏组件及电子设备，以实现大面积指纹识别且成本较低。
第一方面，本申请实施例提供一种屏组件。所述屏组件可应用于电子设备中。所述屏组件包括显示面板及位于所述显示面板非出光侧的识别面板。所述识别面板与所述显示面板层叠设置。所述显示面板用于显示图像。所述显示面板的两侧分别为出光侧和非出光侧，其中，出光侧为所述显示面板射出显示光线一侧。
所述显示面板包括多个识别区域。相邻且彼此间隔的两个所述识别区域之间形成非识别区域。所述识别面板包括多个图像传感器。所述多个图像传感器的感光面用于一一对应地采集位于所述多个识别区域的用户指纹图像。所述图像传感器的感光面能够将形成在其上的光像转换为与光像成相应比例关系的电信号。在指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比大于或等于1：5。
在本实施例中，包括所述多个图像传感器的所述识别面板位于所述显示面板的非出光侧，因此所述多个图像传感器能够进行屏下指纹图像采集，所述多个图像传感器无需占用所述显示面板的周边空间，所述显示面板的面积得以增加，有利于所述屏组件的窄边框化，使得所述屏组件的屏占比较大，应用所述屏组件的所述电子设备的屏占比较大。
在本实施例中，由于所述多个图像传感器的感光面一一对应地采集位于所述多个识别区域出光侧的部分用户指纹图像，而不采集位于所述非识别区域出光侧的部分指纹图像，故而所述多个图像传感器的感光面对位于所述显示面板出光侧的用户指纹图像进行局部采集，而非全部采集，使得所述多个图像传感器的感光面的总面积得以缩小，所述识别面板及所述屏组件的成本得以降低。
并且，由于在所述指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比大于或等于1：5，因此所述多个图像传感器的感光面所采集的局部指纹图像的总面积(即有效采集面积)能够满足指纹识别过程所需求的最小采集面积，使得所述屏组件能够满足基本识别需求的情况下，减小所述多个图像传感器的感光面的总面积，从而降低所述多个图像传感器的成本，也降低所述屏组件的成本。由于所述屏组件能够满足识别需求且 成本较低，因此所述屏组件能够在不显著增加成本的情况下，实现大面积指纹识别(全屏指纹识别或大屏指纹识别)。也即，所述屏组件及应用所述屏组件的电子设备能够实现大面积指纹识别且成本较低。
一种可选实施例中，在指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比在1：2至2:1的范围内。在本申请中，“A”至“B”的范围包括端点A和端点B。
其中，对于在所述指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比值的上限，本申请不作严格限定。该比值越大，则识别精度越高。该比值越低，则成本更低。通过实验验证，当所有所述识别区域的总面积与所有所述非识别区域的总面积的比在1：2至2:1的范围内时，所述屏组件能够很好地兼顾识别精度及成本的需求。
一种实施例中，所述屏组件能够实现全屏指纹识别。此时，所述指纹覆盖区域可位于所述显示面板的显示区域的任意位置。也即，所述显示面板的整个显示区域均可响应用户的操作，而形成对应的指纹覆盖区域。另一种实施例中，所述屏组件能够实现大屏指纹识别。所述指纹覆盖区域可位于所述显示面板的显示区域的指定范围中。例如，所述显示面板的部分显示区域为指定位置，这部分区域可响应用户的操作而形成对应的指纹覆盖区域。该指定范围的面积较大。例如，该指定范围可以是屏组件的半个或半个以上的靠上或靠下的屏幕，可以是屏组件的半个或半个以上的靠左或靠右的屏幕等。
可选的，所述指纹覆盖区域响应于用户操作。也即，所述指纹覆盖区域的位置由用户自定义。一种实施例中，所述屏组件可以通过感应用户的触摸区域，该触摸区域即形成所述指纹覆盖区域。此时，所述指纹覆盖区域的形状随用户的触摸区域形状变化。
另一种实施例中，所述屏组件可以通过感应用户的触摸位置，启动预设的对应于该触摸位置的所述指纹覆盖区域，所述指纹覆盖区域覆盖触摸位置。此时，所述指纹覆盖区域的形状可以为圆形、椭圆形、方形或跑道形等。所述指纹覆盖区域的形状也可以与用户手指指头的形状相似或相同。所述指纹覆盖区域的形状也可以由用户进行自定义。本申请实施例不对所述指纹覆盖区域的具体形状作严格限定。
其中，所述指纹覆盖区域的面积在35平方毫米至200平方毫米的范围内。例如，所述指纹覆盖区域的面积可以在64平方毫米至144平方毫米的范围内。
在本申请实施例中，所述指纹覆盖区域中，包括至少两个所述识别区域。此时，各所述识别区域的面积较小。由对应于至少两个所述识别区域的所述图像传感器的感光面所采集的图像拼接成最终的比对图像。由于比对图像由多个图像拼接成，因此所述比对图像较为精准，有利于提高应用所述屏组件的所述电子设备的指纹识别准确度。
可以理解的，在指纹覆盖区域满足基本采集面积的前提下，各识别区域的面积越小，比对图像由数量越多的图像拼接成，比对图像的图像质量更高，指纹识别的准确度更高，而更多数量的图像传感器也带来成本高的问题；而各识别区域的面积越大时，虽然能够减少图像传感器的数量以降低成本，但是比对图像所包括的拼接图像数量降低，比对图像的图像质量降低，指纹识别的准确度降低。故而，本申请实施例在设计单个所述识别区域的面积时，需要兼顾识别准确度需求和成本需求。
其中，各所述图像传感器的感光面均包括阵列排布的多个传感单元。所述传感单元可采用互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)传感器，或薄膜晶体管(thin film transistor，TFT)传感器。当所述传感单元采用互补金属氧化物半 导体传感器时，所述图像传感器的衬底采用半导体材料。当所述传感单元采用薄膜晶体管传感器时，所述图像传感器的衬底采用玻璃或有机介质等绝缘材料。
在本申请实施例中，各所述识别区域的形状和面积可以是相同的，也可以存在不同。本申请以各所述识别区域的形状和面积是相同的为例进行说明。
在本申请实施例中，在所述识别区域的面积与所述非识别区域的面积的比满足上述条件的情况下，所述多个识别区域的排布可以呈一定规律，也可以是随机的。本申请实施例以所述多个识别区域的排布可以一定规律为例进行说明。
一种可选实施例中，所述多个识别区域在第一方向上彼此间隔排布。也即，在所述第一方向上，任意相邻的两个所述识别区域之间均排布有所述非识别区域。此时，在所述第一方向上，任意相邻的两个所述识别区域之间的距离具有第一尺寸，各所述识别区域的长度具有第二尺寸。所述第一尺寸可以大于、等于或者小于所述第二尺寸，本申请实施例不对两者之间的尺寸关系进行严格限定。
在本实施例中，由于所述多个识别区域在第一方向上彼此间隔排布，因此当两个所述指纹覆盖区域位于所述显示面板的不同位置时，两个所述指纹覆盖区域所对应的所述图像传感器的感光面的数量相同或者相近，从而保证所述屏组件在不同使用场景下均能够获得足够的有效采集面积，使得所述电子设备的指纹识别准确度高。
一种可选实施例中，所述多个识别区域在第二方向上彼此间隔排布，所述第二方向垂直于所述第一方向。也即，在所述第二方向上，任意相邻的两个所述识别区域之间均排布有非识别区域。此时，在所述第二方向上，任意相邻的两个所述识别区域之间的距离具有第三尺寸，各所述识别区域的长度具有第四尺寸。所述第三尺寸可以大于、等于或者小于所述第四尺寸，本申请实施例不对两者之间的尺寸关系进行严格限定。
在本实施例中，当所述多个识别区域在第一方向上和第二方向上均彼此间隔排布时，位于所述显示面板的不同位置两个所述指纹覆盖区域所对应的所述图像传感器的感光面的数量相同或者更为相近，进一步保证所述屏组件在不同使用场景下均能够获得足够的有效采集面积，使得所述电子设备的指纹识别准确度更高。
其中，所述多个识别区域在所述第一方向上的排布方式与在所述第二方向上的排布方式相同。此时，所述屏组件在不同使用场景下获得足够的有效采集面积的可靠性更高，所述电子设备的指纹识别准确度更高。当然，在其他实施例中，所述多个识别区域在所述第一方向上的排布方式与在所述第二方向上的排布方式也可以不相同。
一种可选实施例中，所述多个识别区域在第一方向上彼此间隔地排布成行，且在第二方向上彼此间隔地排布成列，所述第二方向垂直于所述第一方向。相邻的两行所述识别区域中的各个所述识别区域均排布于不同列中。此时，相邻的两列所述识别区域中的各个所述识别区域均排布于不同列中。
在本实施例中，所述屏组件的位置不同的任意两个指纹覆盖区域所包括的所述识别区域的数量非常相近，也即这两个指纹覆盖区域所对应的所述图像传感器的感光面的数量非常相近，所述屏组件在不同使用场景下均能够获得足够的有效采集面积，使得所述电子设备的指纹识别准确度更高。
一种可选实施例中，在指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比在1：0.8至1：1.2的范围内。此时，在第一方向上，相邻两个所述识别区域之间的间距可以等于、略大于或略小于所述识别区域的长度。在第二方向上，相邻两个 所述识别区域之间的间距也可以等于、略大于或略小于所述识别区域的长度。
在本实施例中，所述屏组件能够综合考虑制作公差、装配公差、图像采集总面积、成本等各方面的需求，以获得更高的产品良率和指纹识别准确度以及更低的成本。
一种可选实施例中，所述多个识别区域包括多个识别区域组。各所述识别区域组中均包括彼此邻接的至少两个所述识别区域。任意相邻的两个所述识别区域组彼此间隔排布。其中，至少两个识别区域彼此邻接是指：同一个所述识别区域组的相邻两个所述识别区域之间的间距，远小于相邻两个所述识别区域组之间的间距。任意相邻的两个所述识别区域组之间形成所述非识别区域。其中，多个所述识别区域组在第一方向上彼此间隔排布，且在第二方向上彼此间隔排布或连续排布，所述第二方向垂直于所述第一方向。
在本实施例中，由于各所述识别区域组中均包括彼此邻接的至少两个所述识别区域，任意相邻的两个所述识别区域组彼此间隔排布，因此所述识别区域的排列方式更为多样化，有利于满足不同的电子设备各自的指纹识别需求。各所述识别区域组中均包括至少两个识别区域，也使得所述识别区域能够采集小区域范围内的连续图像，使得所述屏组件所形成的最终比对图像由至少两个连续图像拼接而成，所述最终比对图像更容易与电子设备中的标准图像进行比对，所述电子设备的指纹识别准确度更高。
其中，在所述指纹覆盖区域中，包括至少两个所述识别区域组。此时，所述屏组件所形成的最终比对图像由至少两个所述识别区域组所采集的图像拼接而成，图像质量较高，使得应用所述屏组件的所述电子设备的指纹识别准确度较高。
一种可选实施例中，单个所述图像传感器包括一个感光面。此时，所述图像传感器的整体体积随其感光面面积变化，感光面面积设计较小，使得所述图像传感器的整体体积较小，有利于降低所述图像传感器的成本。
另一种可选实施例中，单个所述图像传感器包括多个感光面。当单个感光面的面积很小时，可以将多个感光面集成在同一个图像传感器中，以降低图像传感器的切割工艺难度，从而兼顾图像传感器小体积和易加工的需求。
其中，同一所述图像传感器的多个感光面之间可以彼此间隔设置，也可以彼此邻接设置。
一种可选实施例中，所述识别面板还包括衬底及光学层。所述衬底位于所述显示面板的非出光侧。所述多个图像传感器固定于所述衬底朝向所述显示面板的一侧。各所述图像传感器的感光面远离所述衬底设置，也即面向所述显示面板设置。所述光学层位于所述多个图像传感器与所述显示面板之间。所述光学层用于将位于所述识别区域出光侧的用户指纹图像成像至对应的所述图像传感器的感光面上。所述屏组件通过所述光学层处理被用户指纹所反射的光线，以在对应的所述图像传感器的感光面上形成相应的采集图像，该采集图像与用户指纹图像相对应。
在本实施例中，由于所述屏组件设置有所述光学层，所述光学层能够改变光线状态，因此能够通过设置所述光学层的结构和尺寸，使得所述图像传感器的感光面与所述显示面板的相对位置关系发生变化，使得所述屏组件的结构更为多样化，所述屏组件的适用范围更广。
一种实施例中，所述多个图像传感器的感光面可以一一对应地正对所述多个识别区域。此时，所述光学层对光线的传播方向的改动较小，能够降低光线在传播过程中发生畸变而导致最终的比对图像出现精确度不足的风险，使得应用所述屏组件的所述电子设备的指纹识别准确度较高。
其他实施方式中，所述光学层可以改变光线的传播方向，因此所述多个图像传感器的感 光面之间的相对位置关系可以与多个所述识别区域的相对位置关系有些许不同。
例如，单个所述图像传感器上包括多个感光面，多个感光面彼此邻接。多个感光面所对应的多个所述识别区域彼此间隔设置。通过光学层改变光线的传播方向，使得由这些识别区域进入的光线汇聚射入彼此邻接的多个感光面中，从而实现图像采集。
一种实施例中，所述衬底可以是刚性印刷电路板(printed circuit board，PCB)。另一种实施例中，所述衬底可以包括柔性印刷电路板(flexible printed circuit，FPC)和补强板，所述补强板与所述柔性印刷电路板层叠设置。
一种实施例中，所述多个图像传感器可采用芯片贴装(die attach)方式直接绑定(bonding)到所述衬底上。另一种实施例中，所述多个图像传感器可采用扇出(fan-out)工艺连接成一体封装结构，再将该封装结构整体贴合至所述衬底。
一种可选实施例中，所述识别面板还包括封装件。所述封装件位于所述衬底朝向所述显示面板的一侧，且围绕所述多个图像传感器设置。此时，所述封装件将所述多个图像传感器封装成一体式封装结构。其中，所述封装件可采用扇出工艺封装多个所述图像传感器。所述光学层覆盖所述封装件及所述多个图像传感器。此时，所述光学层可以为一体式结构。
在本实施例中，所述封装件能够先将所述多个图像传感器封装成一体封装结构，然后将该封装结构贴合至所述衬底，接着将同为一体式结构的所述光学层覆盖在所述封装件及所述多个图像传感器上，故而所述屏组件的组装工艺步骤少且工艺难度低，有利于降低所述屏组件的生产成本。
一种可选实施例中，所述光学层包括多个光学部。所述多个光学部一一对应地位于所述多个图像传感器上。所述光学部位于对应的所述图像传感器的采集图像的一侧，也即位于所述图像传感器的感光面的上方。其中，所述识别面板还包括多个封装体。所述多个封装体与所述多个光学部一一对应设置。各所述封装体用于将对应的所述光学部与所述图像传感器封装成一体式的单元组件。
所述识别面板还包括封装件。所述封装件位于所述衬底朝向所述显示面板的一侧，且围绕所述多个图像传感器及所述多个光学部设置。一种实施例中，所述图像传感器及位于其上方的所述光学部可以先形成单元组件，多个所述单元组件固定至所述衬底后，通过所述封装件将多个所述单元组件及所述衬底封装成一体式结构。另一种实施例中，所述图像传感器及位于其上方的所述光学部可以先形成单元组件，通过所述封装件将多个所述单元组件封装成一体式结构后，将该结构贴合至所述衬底，以完成组装。
在本实施例中，由于对应的所述光学部与所述图像传感器可形成单元组件，而后多个所述单元组件再依据具体的排布需求固定至所述衬底，因此所述屏组件可以在不更改物料种类的情况下，通过改变所述单元组件的位置形成不同的识别面板，有利于所述屏组件的批量化和多型号化。
一种可选实施例中，所述光学层包括多个准直器。所述准直器用于将发散的光线转变成准直光线。所述多个准直器一一对应地正对所述多个图像传感器的感光面设置。
在本实施例中，所述多个准直器在所述图像传感器的感光面上成像出物象比例1：1的采集图像。由于所述多个准直器能够对被用户指纹反射的光线进行准直处理，因此所述采集图像的图像质量较高，所述屏组件能够形成质量较高的比对图像，从而使得所述电子设备的指纹识别精度较高。
其中，由于所述准直器用于成像出物象比例1：1的采集图像，因此所述图像传感器的感 光面的面积与所述显示面板上的识别区域的面积相近。考虑到所述多个图像传感器在组装时的公差，彼此靠近的两个所述图像传感器之间可以预留合理避让，以提高所述屏组件的组装精度和产品良率。
其中，当对应的所述图像传感器和所述光学部先形成单元组件、后通过所述封装件封装时：各所述准直器可通过晶元级(wafer level)加工工艺直接形成在所述图像传感器的感光面上。例如，可以采用多层遮光光罩(mask)工艺在所述图像传感器的感光面上沉积或蚀刻出准直孔结构，以形成所述准直器。或者，各所述准直器也可以是先形成的具有准直孔的薄膜，而后将各所述准直器贴合到对应的所述图像传感器的感光面上。
当所述封装件先封装所述多个图像传感器、后组装所述光学层时，所述光学层可以为包括多个准直器的一体式结构。
一种可选实施例中，所述光学层包括多个透光小孔。所述光学层可包括基底和遮光膜，所述遮光膜位于所述基底朝向所述显示面板的一侧。所述基底采用透光材料，例如玻璃或聚碳酸酯(polycarbonate，PC)。所述遮光膜上具有所述多个透光小孔。所述遮光膜采用遮光材料。所述多个透光小孔一一对应地正对所述多个图像传感器的感光面设置。各所述透光小孔的中心与所述显示面板的出光面之间形成第一间距，且与所述图像传感器的感光面之间形成第二间距，所述第一间距大于所述第二间距。
在本实施例中，利用小孔成像原理，所述多个透光小孔在所述图像传感器的感光面上成像出物象比例X：1的采集图像。X大于1。此时，所述采集图像的面积小于所述显示面板上所述识别区域的面积，因此在所述识别区域的面积不变的情况下，所述图像传感器的感光面的面积能够减小，使得所述图像传感器的成本降低，所述屏组件的成本降低。同时，在所述图像传感器的感光面的面积不变的情况下，所述图像传感器所对应的所述识别区域的面积增加，多个所述识别区域的拼接可以采用冗余拼接，从而提高所述电子设备的指纹识别准确度。
其中，所述屏组件可通过调节所述第一间距和所述第二间距的尺寸，降低所述图像传感器的感光面的面积，或者增加所述图像传感器的感光面所对应的识别区域的面积。
其中，所述显示面板的出光面为所述显示面板远离所述识别面板的表面。所述显示面板的非出光面与所述显示面板的出光面相背设置。所述显示面板的非出光面与所述透光小孔的中心之间形成间距。可通过调节该间距的大小，调整所述第一间距的大小。
其中，所述光学层的基底具有厚度(在垂直于所述图像传感器的感光面的方向上的尺寸)。可通过调节所述基底的厚度，来调整所述第二间距的大小。
一种可选实施例中，所述屏组件还包括透明的粘接层，所述粘接层粘接于所述显示面板与所述光学层之间。在本实施例中，所述显示面板与所述光学层之间填充有所述粘接层。所述粘接层可以粘接所述光学层及所述显示面板，还可以防止光线因空气层的散射而影响所述采集图像的质量。所述粘接层可采用透明光学胶。一种实施例中，所述粘接层也可同时覆盖所述封装件。
一种可选实施例中，所述光学层包括多个透镜。所述多个透镜一一对应地正对所述多个图像传感器的感光面设置。所述透镜用于将所述用户指纹图像成像并缩小至所述图像传感器的感光面。所述透镜用于起到聚光作用。
在本实施例中，所述透镜用于将所述用户指纹图像成像并缩小至所述图像传感器的感光面，所述图像传感器的感光面上所形成的采集图像与对应的识别区域的面积比小于1，也即物象比例大于1。此时，所述采集图像的面积小于所述显示面板上所述识别区域的面积，因 此在所述识别区域的面积不变的情况下，所述图像传感器的感光面的面积能够减小，使得所述图像传感器的成本降低，所述屏组件的成本降低。同时，在所述图像传感器的感光面的面积不变的情况下，所述图像传感器的感光面所对应的所述识别区域的面积增加，多个所述识别区域的拼接可以采用冗余拼接，从而提高所述电子设备的指纹识别准确度。
其中，单个所述透镜可包括一个或多个子透镜。单个所述透镜包括一个子透镜时，该子透镜为凸透镜。单个所述透镜包括多个子透镜时，多个子透镜可以是多个凸透镜，也可以是凹透镜和凸透镜组合。其中，所述透镜也可以为利用超材料结构制作的平面透镜。
第二方面，本申请实施例还提供一种电子设备。所述电子设备包括壳体及上述任一项所述的屏组件。所述屏组件安装于所述壳体。
在本实施例中，由于所述屏组件具有更大的显示面积，所述电子设备的屏占比较大。由于所述屏组件能够在具有足够有效采集面积的条件下，降低所述多个图像传感器的感光面的总面积，从而降低所述多个图像传感器的成本，因此所述屏组件的成本更低，所述电子设备能够在不显著影响指纹识别性能的前提下，实现大面积指纹识别且成本较低。
附图说明
图1是本申请实施例提供的一种电子设备的结构示意图；
图2是图1所示电子设备的屏组件的结构示意图；
图3是图2所示屏组件在A-A线处的结构在一种实施例中的结构示意图；
图4是图2所示屏组件在A-A线处的结构在另一种实施例中的结构示意图；
图5A是图2所示屏组件的显示面板在一种实施方式中的部分结构示意图；
图5B是图5A所示显示面板的识别区域和非识别区域在一种排布方式中的示意图；
图5C是图5A所示显示面板的识别区域和非识别区域在另一种排布方式中的示意图；
图5D是图5A所示显示面板的识别区域和非识别区域在再一种排布方式中的示意图；
图6A是图2所示屏组件的显示面板在另一种实施方式中的部分结构示意图；
图6B是图2所示屏组件的显示面板在再一种实施方式中的部分结构示意图；
图6C是图2所示屏组件的显示面板在再一种实施方式中的部分结构示意图；
图7是图3所示屏组件在第一实施例中的结构示意图；
图8A是图7所示屏组件在第一实施方式中的结构示意图；
图8B是图7所示屏组件在第二实施方式中的结构示意图；
图8C是图7所示屏组件在第三实施方式中的结构示意图；
图9是图3所示屏组件在第二实施例中的结构示意图；
图10A是图9所示屏组件在第一实施方式中的结构示意图；
图10B是图9所示屏组件在第二实施方式中的结构示意图；
图10C是图9所示屏组件在第三实施方式中的结构示意图。
具体实施方式
下面结合本申请实施例中的附图对本申请实施例进行描述。
请参阅图1，图1是本申请实施例提供的一种电子设备100的结构示意图。
电子设备100可以是手机、平板电脑、电子阅读器、笔记本电脑、车载设备或可穿戴设备等设备。图1所示实施例以电子设备100是手机为例进行说明。
电子设备100包括壳体10和屏组件20。屏组件20安装于壳体10。具体的，壳体10包括边框和后盖。边框环绕设于后盖的周缘。屏组件20安装于边框远离后盖的一侧。也即，屏组件20和后盖分别安装于边框的两侧。用户使用电子设备100时，屏组件20通常朝向用户放置，后盖背离用户放置。其中，边框和后盖可以通过组装形成一体式结构。边框和后盖也可以是一体成型的结构。
其中，屏组件20集成有显示功能、触摸感应功能及指纹图像采集功能。屏组件20能够采集用户指纹图像，并形成对应的比对图像。
电子设备100还包括电路板30和位于电路板30上的控制模块40。电路板30和控制模块40收容于壳体10内侧。控制模块40可以包括至少一个通信接口、总线、至少一个处理器和至少一个存储器。至少一个通信接口、至少一个处理器及至少一个存储器可通过总线相互通信。至少一个通信接口用于接收和发送数据。屏组件20连接其中一个通信接口。屏组件20能够将对应于用户指纹图像的比对图像的数据传输至处理器。至少一个存储器用于存储程序代码。程序代码包括指纹识别的代码。至少一个处理器可以用于执行上述应用程序代码。例如，至少一个处理器能够执行指纹识别的代码，以实现指纹识别。本申请中，“至少一个”包括一个或两个两种情况。
请一并参阅图2和图3，图2是图1所示电子设备100的屏组件20的结构示意图，图3是图2所示屏组件20在A-A线处的结构在一种实施例中的结构示意图。
屏组件20包括显示面板1及位于显示面板1非出光侧的识别面板2。识别面板2与显示面板1层叠设置。显示面板1用于显示图像。显示面板1的两侧分别为出光侧和非出光侧，其中，出光侧为显示面板1射出显示光线一侧。
识别面板2包括多个图像传感器21。显示面板1包括多个识别区域11。相邻且彼此间隔的两个识别区域11之间形成非识别区域12。多个图像传感器21的感光面211用于一一对应地采集位于显示面板1出光侧的用户指纹图像。具体的，多个图像传感器21的感光面211用于一一对应采集位于多个识别区域11的用户指纹图像。图像传感器21能够将形成在其感光面211上的采集图像(光像)转换为与采集图像成相应比例关系的电信号。在指纹覆盖区域3中，所有识别区域11的总面积与所有非识别区域12的总面积的比大于或等于1：5。
在本实施例中，包括多个图像传感器21的识别面板2位于显示面板1的非出光侧，因此多个图像传感器21能够进行屏下指纹图像采集，多个图像传感器21无需占用显示面板1的周边空间，显示面板1的面积得以增加，有利于屏组件20的窄边框化，使得屏组件20的屏占比较大，应用屏组件20的电子设备100的屏占比较大。
在本实施例中，由于多个图像传感器21的感光面211一一对应地采集位于多个识别区域11出光侧的部分用户指纹图像，而不采集位于非识别区域12出光侧的部分指纹图像，故而多个图像传感器21的感光面211对位于显示面板1出光侧的用户指纹图像进行局部采集，而非全部采集，使得多个图像传感器21的感光面211的总面积得以缩小，识别面板2及屏组件20的成本得以降低。
并且，由于在指纹覆盖区域3中，所有识别区域11的总面积与所有非识别区域12的总面积的比大于或等于1：5，因此多个图像传感器21的感光面211所采集的局部指纹图像的总面积(即有效采集面积)能够满足指纹识别过程所需求的最小采集面积，使得屏组件20在满足基本识别需求的情况下，减小多个图像传感器211的感光面211的总面积，从而降低多个图像传感器21的成本，也降低屏组件20的生产成本。由于屏组件20能够满足识别需求且 成本较低，因此屏组件20能够在不显著增加成本的情况下，实现大面积指纹识别(全屏指纹识别或大屏指纹识别)。也即，屏组件20及应用屏组件20的电子设备100能够实现大面积指纹识别且成本较低。
其中，指纹覆盖区域3包括区域轮廓线范围内的区域。若某个识别区域11一半的面积或其他预设比例(例如全部、三分二、三分一、四分三、四分一、五分一等)的面积位于区域轮廓线内，则该识别区域11为指纹覆盖区域3内的区域。当非识别区域12的数量为多个，且被识别区域11隔开时(可参阅后文中图5B和图5D)：若某个非识别区域12一半的面积或其他预设比例的面积位于区域轮廓线内，则该非识别区域12为指纹覆盖区域3内的区域；当非识别区域12为一体区域时(可参阅后文中图5C)：则非识别区域12位于区域轮廓线范围内的部分为指纹覆盖区域3内的区域。
一种可选实施例中，在指纹覆盖区域3中，所有识别区域11的总面积与所有非识别区域12的总面积的比在1：2至2:1的范围内。在本申请中，“A”至“B”的范围包括端点A和端点B。
其中，对于在指纹覆盖区域3中，所有识别区域11的总面积与所有非识别区域12的总面积的比值的上限，本申请不作严格限定。该比值越大，则识别精度越高。该比值越低，则成本更低。设计时，该比值需兼顾识别精度及成本。通过实验验证，当在指纹覆盖区域3中，所有识别区域11的总面积与所有非识别区域12的总面积的比在1：2至2:1的范围内时，屏组件20能够很好地兼顾识别精度及成本的需求。
一种实施例中，屏组件20能够实现全屏指纹识别。此时，指纹覆盖区域3可位于显示面板1的显示区域的任意位置。也即，显示面板1的整个显示区域均可响应用户的操作，而形成对应的指纹覆盖区域3。另一种实施例中，屏组件20能够实现大屏指纹识别。指纹覆盖区域3可位于显示面板1的显示区域的指定范围中。例如，显示面板1的部分显示区域为指定位置，这部分区域可响应用户的操作而形成对应的指纹覆盖区域3。该指定范围的面积较大。例如，该指定范围可以是屏组件的半个或半个以上的靠上或靠下的屏幕，可以是屏组件的半个或半个以上的靠左或靠右的屏幕等。
可选的，所述指纹覆盖区域响应于用户操作。也即，所述指纹覆盖区域的位置由用户自定义。
一种实施例中，所述屏组件可以通过感应用户的触摸区域，该触摸区域即形成所述指纹覆盖区域。此时，所述指纹覆盖区域的形状随用户的触摸区域形状变化。
另一种实施例中，所述屏组件可以通过感应用户的触摸位置，启动预设的对应于该触摸位置的所述指纹覆盖区域，所述指纹覆盖区域覆盖触摸位置。此时，指纹覆盖区域3的形状可以为圆形、椭圆形、方形或跑道形等。指纹覆盖区域3的形状也可以与用户手指指头的形状相似或相同。指纹覆盖区域3的形状也可以由用户进行自定义。本申请实施例不对指纹覆盖区域3的具体形状作严格限定。图2中指纹覆盖区域3的形状为圆形为例进行示意。
本申请实施例还公开一种电子设备100的指纹识别方法，该方法可以应用于本申请实施例中的电子设备100。该方法包括：
步骤一：屏组件20捕捉用户的触摸位置，并形成触摸信息。其中，第一触摸信息包括用户手指的位置信息。例如，如图2所示，用户手指触摸第一点311时，第一触摸信息包括第一点311的位置信息(也即坐标)。用户手指触摸第二点321时，第二触摸信息包括第二点321的位置信息(也即坐标)。屏组件20中的触摸层可用于步骤用户的触摸动作，并形成触 摸信息。
步骤二：控制模块40依据触摸信息，启动对应的指纹覆盖区域3的光源。其中，对应的指纹覆盖区域3为以用户手指的位置为中心或基点的预设形状所覆盖的区域。
例如，如图2所示，触摸信息包括第一点311位置时，对应的指纹覆盖区域3为第一指纹覆盖区域31。触摸信息包括第二点321位置时，对应的指纹覆盖区域3为第二指纹覆盖区域32。以图像传感器21识别可见光为例进行说明，则对应的指纹覆盖区域3的光源可以是位于指纹覆盖区域3中的识别区域11和非识别区域12，也可以是一个覆盖该指纹覆盖区域3的发光区域。
步骤三：控制模块40依据触摸信息，启动对应于该指纹覆盖区域3的图像传感器21的感光面211。
例如，如图2所示，各图像传感器21包括一个感光面211。对应于第一指纹覆盖区域31的图像传感器21的感光面211是图2中用于采集第一指纹覆盖区域31的4颗图像传感器21的感光面211。对应于第二指纹覆盖区域32的图像传感器21的感光面是图2中用于采集第二指纹覆盖区域32的5颗图像传感器21的感光面211。其他实施例中，单个图像传感器21包括多个感光面211时，也可以启动需要的感光面211，而不需要的感光面211不工作，以降低能耗。
步骤四：控制模块40读取对应于该指纹覆盖区域3的图像传感器21的感光面211的比对图像数据。该比对图像数据对应与用户的指纹图像。其中，控制模块40可以同时读取对应于该指纹覆盖区域3的多个图像传感器21的感光面211的数据，也可以顺利读取对应于该指纹覆盖区域3的多个图像传感器21的感光面211的数据。
步骤五：控制模块40提取比对图像数据中的特征信息与模板进行匹配。匹配成功，则指纹识别通过，电子设备100执行后续的对应操作(例如屏幕解锁、APP解锁、支付解锁等解锁操作)。匹配失败，则指纹识别不通过，电子设备100不执行后续的对应操作。
在本实施例中，由于控制模块40依据用户的触摸位置启动对应的光源及图像传感器21的感光面211，因此电子设备100在指纹识别过程中，只需启动需要的部分光源和部分图像传感器21的感光面211即可进行图像采集，也只需处理这部分图像传感器21的感光面211所形成的比对图像数据即可实现匹配判断，故而电子设备100的整体功耗较低，且采图时间短、识别速度快。
其中，指纹覆盖区域3的面积在35平方毫米至200平方毫米的范围内。例如，指纹覆盖区域3的面积可以在64平方毫米至144平方毫米的范围内。
在本申请实施例中，在指纹覆盖区域3中，通常包括至少两个识别区域11。此时，各识别区域11的面积较小。由对应于至少两个识别区域11的图像传感器21的感光面211所采集的图像拼接成最终的比对图像。由于比对图像由多个图像拼接成，因此比对图像较为精准，有利于提高应用屏组件20的电子设备100的指纹识别准确度。
可以理解的，在满足指纹覆盖区域3具有基本采集面积的前提下，各识别区域11的面积越小，比对图像由数量越多的图像拼接成，比对图像的图像质量更高，指纹识别的准确度更高，而更多数量的图像传感器21也带来成本高的问题；而各识别区域11的面积越大时，虽然能够减少图像传感器21的数量以降低成本，但是比对图像所包括的拼接图像数量降低，比对图像的图像质量降低，指纹识别的准确度降低。故而，本申请实施例在设计单个识别区域11的面积时，需要兼顾识别准确度需求和成本需求。
其中，各图像传感器21的感光面211均包括阵列排布的多个传感单元。传感单元可采用互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)传感器，或薄膜晶体管(thin film transistor，TFT)传感器。当传感单元采用互补金属氧化物半导体传感器时，图像传感器21的衬底采用半导体材料。当传感单元采用薄膜晶体管传感器时，图像传感器21的衬底采用玻璃或有机介质等绝缘材料。
一种可选实施例中，各图像传感器21中的传感单元用于感应可见光。则，显示面板1的部分区域或全部区域允许可见光穿过，显示面板1为透明显示屏。此时，被用户指纹反射后的可见光能够经过显示面板1后进入图像传感器21，使得屏组件20能够顺利采集用户指纹图像。其中，显示面板1发出的显示光线能够作为电子设备100在指纹识别中的感测光线，该感测光线被用户指纹反射后能够被图像传感器21采集，从而形成对应于指纹图像的比对图像。
另一种可选实施例中，各图像传感器21中的传感单元用于感应不可见光。不可见光例如近红外线、红外线、近紫外线、紫外线等。则，显示面板1的部分区域或全部区域允许不可见光穿过。此时，显示面板1可以允许可见光穿过，也可以遮挡可见光，本申请对此不作严格限定。在本实施例中，电子设备100还包括用于发出不可见光的光源。该光源可以相对屏组件20独立，也可以集成在屏组件20中。该光源发出的不可见光被用户指纹反射后能够被图像传感器21采集，从而使屏组件20形成对应于指纹图像的比对图像。
其中，显示面板1可以为有机发光二极管(organic light-emitting diode,OLED)面板、液晶显示面板(liquid crystal display，LCD)、量子点发光二极管(quantum dot light emitting diodes，QLED)面板或微尺寸发光二极管(micro light-emitting diode，uLED)面板等。
请参阅图3，一种可选实施例中，单个图像传感器21包括一个感光面211。此时，图像传感器21的整体体积随其感光面211的面积变化，感光面211的面积设计较小，使得图像传感器21的整体体积较小，有利于降低图像传感器21的成本。
请参阅图4，图4是图2所示屏组件20在A-A线处的结构在另一实施例中的结构示意图。
另一种可选实施例中，单个图像传感器21包括多个感光面211。当单个感光面211的面积很小时，可以将多个感光面211集成在同一个图像传感器21中，以降低图像传感器21的切割工艺难度，从而兼顾图像传感器21小体积需求和易加工需求。
其中，同一图像传感器21的多个感光面211之间可以彼此间隔设置，也可以彼此邻接设置。多个感光面211可以共面设置。
在本申请实施例中，各识别区域11的形状和面积可以是相同的，也可以存在不同。本申请以各识别区域11的形状和面积是相同的为例进行说明。
在本申请实施例中，在识别区域11的面积与非识别区域12的面积的比满足前文所述条件的情况下，多个识别区域11的排布可以呈一定规律，也可以是随机的。本申请实施例以多个识别区域11的排布可以一定规律为例进行说明。
请参阅图5A，图5A是图2所示屏组件20的显示面板1在一种实施方式中的部分结构示意图。图5A中识别区域11示意为填充倾斜线的方格，非识别区域12示意为没有进行填充的方格。
可选的，多个识别区域11在第一方向X上彼此间隔地排布成行，且在第二方向Y上彼此间隔地排布成列，第二方向Y垂直于第一方向X。相邻的两行识别区域11中的各个识别区域 11均排布于不同列中。此时，相邻的两列识别区域11中的各个识别区域11均排布于不同列中。
其中，第一方向X可以平行于屏组件20的宽度方向(也称横向)，第二方向Y平行于屏组件20的长度方向(也称竖向)。其他实施例中，第一方向X和第二方向Y可以对调。
图5A所示实施方式中，奇数行识别区域11排布于奇数列，偶数行识别区域11排布于偶数列。第1行、第3行、第5行、第7行、第9行为奇数行。第2行、第4行、第6行、第8行、第10行为偶数行。第1列、第3列、第5列、第7列、第9列为奇数列。第2列、第4列、第6列、第8列、第10列为偶数列。其他实施例中，奇数行识别区域11也可排布于偶数列，偶数行识别区域11排布于奇数列。
在本实施方式中，屏组件20的位置不同的任意两个指纹覆盖区域3所包括的识别区域11的数量非常接近，也即这两个指纹覆盖区域3所对应的图像传感器21的感光面211的数量非常相近，屏组件20在不同使用场景下均能够获得足够的有效采集面积，使得电子设备100的指纹识别准确度更高。
一种可选实施例中，在指纹覆盖区域3中，所有识别区域11的总面积与所有非识别区域的总面积的比在1：0.8至1:1.2的范围内。此时，在第一方向X上，相邻两个识别区域11之间的间距可以等于、略大于或略小于识别区域11的长度。在第二方向Y上，相邻两个识别区域11之间的间距也可以等于、略大于或略小于识别区域11的长度。
在本实施例中，屏组件20能够综合考虑制作公差、装配公差、图像采集总面积、成本等各方面的需求，以获得更高的产品良率和指纹识别准确度以及更低的成本。
在本申请实施例中，显示面板1上的识别区域11和非识别区域12的排布方式有多种，包括但不限于：
请参阅图5B，图5B是图5A所示显示面板1的识别区域11和非识别区域12在一种排布方式中的示意图。图5B中，用填充有倾斜线的格子示意出识别区域11，用未进行填充的空格子示意出非识别区域12。
一种排布方式中，显示面板1包括多个非识别区域12，多个非识别区域12被识别区域11间隔开。在第一方向X上，各识别区域11的长度L1等于相邻两个识别区域11之间的间距L2。间距L2等于非识别区域12在第一方向X上的长度。在第二方向Y上，各识别区域11的长度L3等于相邻两个识别区域11之间的间距L4。间距L4等于非识别区域12在第二方向Y上的长度。此时，非识别区域12的形状和尺寸与识别区域11相同。
结合参阅图5A和图5B，图5A中以圆形指纹覆盖区域3为例进行示意。例如，各识别区域11尺寸为3毫米*3毫米。指纹覆盖区域3是直径为9毫米的圆形区域。在第三指纹覆盖区域33中，包括4个识别区域11。对应的，识别面板2中的对应于这4个识别区域11的4个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为36平方毫米，能够满足指纹识别的最小采集面积需求。在第四指纹覆盖区域34中，包括5个识别区域11。对应的，识别面板2中的对应于这5个识别区域11的5个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为45平方毫米，能够满足指纹识别的最小采集面积需求。本实施例中，屏组件20的位置不同的任意两个指纹覆盖区域3所对应的图像传感器21的感光面211的数量非常相近，屏组件20在不同使用场景下均能够获得足够的有效采集面积。
请参阅图5C，图5C是图5A所示显示面板1的识别区域11和非识别区域12在另一种排 布方式中的示意图。图5C中，用填充有倾斜线的格子示意出识别区域11，用未进行填充的空格子示意出非识别区域12。
另一种排布方式中，非识别区域12为一体区域。在第一方向X上，各识别区域11的长度L1均小于相邻两个识别区域11之间的间距L2。间距L2为位于相邻两个识别区域11之间的部分非识别区域12在第一方向X上的长度。在第二方向Y上，各识别区域11的长度L3均小于相邻两个识别区域11之间的间距L4。间距L4为位于相邻两个识别区域11之间的部分非识别区域12在第二方向Y上的长度。
请参阅图5D，图5D是图5A所示显示面板1的识别区域11和非识别区域12在再一种排布方式中的示意图。图5D中，用填充有倾斜线的格子示意出识别区域11，用未进行填充的空格子示意出非识别区域12。
再一种排布方式中，显示面板1包括多个非识别区域12，多个非识别区域12被识别区域11间隔开。在第一方向X上，各识别区域11的长度L1均大于相邻两个识别区域11之间的间距L2。间距L2为非识别区域12在第一方向X上的长度。在第二方向Y上，各识别区域11的长度L3均大于相邻两个识别区域11之间的间距L4。间距L4为非识别区域12在第二方向Y上的长度。非识别区域12的形状与识别区域11相同或相似，非识别区域12的面积小于识别区域11的面积。在本实施例中，多个识别区域11上的图像拼接后形成的图像存在少量冗余，可通过图像处理成合适的比对图像，以提高电子设备100的指纹识别准确度。
请参阅图6A，图6A是图2所示屏组件20的显示面板1在另一种实施方式中的部分结构示意图。图6A中识别区域11示意为填充倾斜线的方格，非识别区域12示意为没有进行填充的方格。
可选的，多个识别区域11在第一方向X上彼此间隔排布。也即，在第一方向X上，任意相邻的两个识别区域11之间均排布有非识别区域12。此时，在第一方向X上，任意相邻的两个识别区域11之间的距离具有第一尺寸，各识别区域11的长度具有第二尺寸。第一尺寸也为位于两个识别区域11之间的部分非识别区域12在第一方向X上的长度。第一尺寸可以大于、等于或者小于第二尺寸，本申请实施例不对两者之间的尺寸关系进行严格限定。
在图6A所示实施方式中，多个识别区域11在第二方向Y上连续排布成列，第二方向Y垂直于第一方向X。此时，在第二方向Y上彼此相邻的两个识别区域11彼此邻接。也即，在第二方向Y上彼此相邻的两个识别区域11之间的距离(可以为零、负值或正值)远小于在第一方向X上彼此相邻的两个识别区域11之间的距离。此时，显示面板1包括多个非识别区域12。任意相邻的两列识别区域11之间均形成呈条形的非识别区域12。其他实施例中，多个识别区域11在第二方向Y上也可以有其他排列方式，例如彼此间隔排布。
图6A中以圆形指纹覆盖区域3为例进行示意。例如，各识别区域11尺寸为2毫米*2毫米。指纹覆盖区域3是直径为10毫米的圆形区域。第五指纹覆盖区域35包括10个识别区域11。对应的，识别面板2中的对应于这10个识别区域11的10个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为40平方毫米，能够满足指纹识别的最小采集面积需求。第六指纹覆盖区域36包括15个识别区域11。对应的，识别面板2中的对应于这15个识别区域11的15个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为60平方毫米，能够满足指纹识别的最小采集面积需求。
在本实施方式中，由于多个识别区域11在第一方向上彼此间隔排布，因此当两个指纹覆盖区域3位于显示面板1的不同位置时，两个指纹覆盖区域3所对应的图像传感器21的感光 面211的数量相同或者相近，从而保证屏组件20在不同使用场景下均能够获得足够的有效采集面积，使得电子设备100的指纹识别准确度高。
请参阅图6B，是图2所示屏组件20的显示面板1在再一种实施方式中的部分结构示意图。图6C中识别区域111示意为填充倾斜线的方格，非识别区域112示意为没有进行填充的方格。
可选的，多个识别区域111在第一方向上彼此间隔排布。也即，在第一方向上，任意相邻的两个识别区域111之间均排布有至少一个非识别区域112。第一方向为多个区域11形成的区域阵列的行方向或列方向。在第一方向上，多个识别区域111和多个非识别区域112可以一一交替排布、一二交替排布或二一交替排布，本申请对此不作严格限定。
多个识别区域111在第二方向上彼此间隔排布，第二方向垂直于第一方向。也即，在第二方向上，任意相邻的两个识别区域111之间均排布有至少一个非识别区域112。在图6B所示实施方式中，第一尺寸大于第二尺寸，例如，第一尺寸等于两倍的第二尺寸。第三尺寸大于第四尺寸，例如第三尺寸等于两倍的第四尺寸。此时，多个识别区域11在第一方向X和第二方向Y的对角线方向上连续排列。显示面板1包括多个非识别区域12。对角线方向上的相邻两条识别区域11之间形成非识别区域12。非识别区域12大致呈阶梯条形。
在图6B所示实施方式中，各区域11尺寸为2毫米*2毫米。指纹覆盖区域3是直径为10毫米的圆形区域。在第七指纹覆盖区域37中，包括8个识别区域11。对应的，识别面板2中的对应于这8个识别区域11的8个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为32平方毫米，能够满足指纹识别的最小采集面积需求。在第八指纹覆盖区域38中，包括9个识别区域11。对应的，识别面板2中的对应于这9个识别区域11的9个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为36平方毫米，能够满足指纹识别的最小采集面积需求。
在本实施方式中，当多个识别区域11在第一方向上和第二方向上均彼此间隔排布时，位于显示面板1的不同位置两个指纹覆盖区域3所对应的图像传感器21的感光面211的数量相同或者更为相近，进一步保证屏组件20在不同使用场景下均能够获得足够的有效采集面积，使得电子设备100的指纹识别准确度更高。
其中，多个识别区域11和多个非识别区域12在第一方向上的排布方式与在第二方向上的排布方式相同。此时，屏组件20在不同使用场景下获得足够的有效采集面积的可靠性更高，电子设备100的指纹识别准确度更高。当然，在其他实施例中，多个识别区域11在第一方向上的排布方式与在第二方向上的排布方式也可以不相同。
请参阅图6C，图6C是图2所示屏组件20的显示面板1在再一种实施方式中的部分结构示意图。图6C中识别区域11示意为填充倾斜线的方格，非识别区域12示意为没有进行填充的方格。
可选的，多个识别区域11包括多个识别区域组13。各识别区域组13中均包括彼此邻接的至少两个识别区域11。任意相邻的两个识别区域组13彼此间隔设置。其中，至少两个识别区域11彼此邻接是指：同一个识别区域组13的相邻两个识别区域11之间的间距，远小于相邻两个识别区域组13之间的间距。任意相邻的两个识别区域组13之间形成非识别区域12。其中，多个识别区域组13在第一方向X上彼此间隔排布，且在第二方向Y上彼此间隔排布或连续排布，第二方向Y垂直于第一方向X。
在图6C所示实施方式中，各识别区域组13包括阵列排布的四个识别区域11，四个识别 区域11中的两个排布在第一方向X上，另外两个排布在第二方向Y上。在本实施方式中，显示面板1的非识别区域12位一体区域。在第一方向X上，相邻两个识别区域组13之间排布有非识别区域12。在第二方向Y上，相邻两个识别区域组13之间排布有非识别区域12。
各识别区域11尺寸为2毫米*2毫米。指纹覆盖区域3是直径为10毫米的圆形区域。在第九指纹覆盖区域39中，包括16个识别区域11。对应的，识别面板2中的对应于这16个识别区域11的16个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为64平方毫米，能够满足指纹识别的最小采集面积需求。在第十指纹覆盖区域310中，包括9个识别区域11。对应的，识别面板2中的对应于这9个识别区域11的9个图像传感器21的感光面211用于采集用户指纹图像。此时，有效采集面积为36平方毫米，能够满足指纹识别的最小采集面积需求。
在本实施方式中，由于各识别区域组13中均包括至少两个识别区域11，任意相邻的两个识别区域组13彼此间隔设置，因此识别区域11的排列方式更为多样化，有利于满足不同的电子设备100各自的指纹识别需求。各识别区域组13中均包括至少两个识别区域11，也使得识别区域11能够采集小区域范围内的连续图像，使得屏组件20所形成的最终比对图像由至少两个连续图像拼接而成，最终比对图像更容易与电子设备100中的标准图像进行比对，电子设备100的指纹识别准确度更高。
在其他实施方式中，识别区域组13包括的识别区域11数量、识别区域组13中识别区域11的排布方式等，均可以有其他设置方式，本申请对此不作严格限定。
其中，在指纹覆盖区域3中，包括至少两个识别区域组13。此时，屏组件20所形成的最终比对图像由至少两个识别区域组13所采集的图像拼接而成，图像质量较高，使得应用屏组件20的电子设备100的指纹识别准确度较高。
请参阅图7，图7是图3所示屏组件20在第一实施例中的结构示意图。在第一实施例中，以单个图像传感器21包括一个感光面211为例进行说明。在其他实施例中，单个图像传感器21也可以包括多个感光面211，该实施例的其他特征可参阅第一实施例进行设置，此处不再赘述。
一种可选实施例中，识别面板2还包括衬底22及光学层23。衬底22位于显示面板1的非出光侧。多个图像传感器21固定于衬底22朝向显示面板1的一侧。各图像传感器21的感光面211远离衬底22设置，也即面向显示面板1设置。光学层23位于多个图像传感器21与显示面板1之间。光学层23用于将位于识别区域11出光侧的用户指纹图像成像至对应的图像传感器21的感光面211上。屏组件20通过光学层23处理被用户指纹所反射的光线，以在对应的图像传感器21的感光面211上形成相应的采集图像，该采集图像与用户指纹图像相对应。
在本实施例中，由于屏组件20设置有光学层23，光学层23能够改变光线状态，因此能够通过设置光学层23的结构和尺寸，使得图像传感器21的感光面211与显示面板1的相对位置关系发生变化，使得屏组件20的结构更为多样化，屏组件20的适用范围更广。
在本实施例中，多个图像传感器21的感光面211的排布位置与多个识别区域11的排布位置相对应。多个图像传感器21的感光面211可以一一对应地采集位于多个识别区域11上的指纹图像。此时，光学层23对光线的传播方向的改动较小，能够降低光线在传播过程中发生畸变而导致最终的比对图像出现精确度不足的风险，使得应用屏组件20的电子设备100的指纹识别准确度较高。其中，单个图像传感器21可以包括一个感光面211(如图7所示)， 也可以包括多个感光面211(可参阅图4)。
其他实施方式中，光学层23可以改变光线的传播方向，因此多个图像传感器21的感光面211之间的相对位置关系可以与多个识别区域11的相对位置关系有些许不同。
例如，可以通过光学层23改变光线的传播方向，从而使得单个图像传感器21的感光面211能够同时采集两个或两个以上的识别区域11上的指纹图像。则，图像传感器21的总数少于识别区域11的总数，使得屏组件20的成本更低。
例如，单个图像传感器21上包括多个感光面211，多个感光面211彼此邻接。多个感光面211所对应的多个识别区域11彼此间隔设置。通过光学层23改变光线的传播方向，使得由这些识别区域11进入的光线汇聚射入彼此邻接的多个感光面211中，从而实现图像采集。
一种实施例中，衬底22可以是刚性印刷电路板(printed circuit board，PCB)。另一种实施例中，衬底22可以包括柔性印刷电路板(flexible printed circuit，FPC)和补强板，补强板与柔性印刷电路板层叠设置。
一种实施例中，多个图像传感器21可采用芯片贴装(die attach)方式直接绑定(bonding)到衬底22上。另一种实施例中，多个图像传感器21可采用扇出(fan-out)工艺连接成一体封装结构，再将该封装结构整体贴合至衬底22。
可选的，识别面板2还包括封装件24。封装件24位于衬底22朝向显示面板1的一侧，且围绕多个图像传感器21设置。此时，封装件24将多个图像传感器21封装成一体式封装结构。其中，封装件24可采用扇出工艺封装多个图像传感器21。光学层23覆盖封装件24及多个图像传感器21。此时，光学层23可以为一体式结构。
在本实施例中，封装件24能够先将多个图像传感器21封装成一体封装结构，然后将该封装结构贴合至衬底22，接着将同为一体式结构的光学层23覆盖在封装件24及多个图像传感器21上，故而屏组件20的组装工艺步骤少且工艺难度低，有利于降低屏组件20的生产成本。
其中，封装件24可采用遮光材料，以降低因串光而导致采集图像质量不佳的风险。
请参阅图8A，图8A是图7所示屏组件20在第一实施方式中的结构示意图。
一种可选实施例中，光学层23包括多个准直器231。准直器231用于将发散的光线转变成准直光线。多个准直器231一一对应地正对多个图像传感器21的感光面211设置。
在本实施例中，多个准直器231在图像传感器21的感光面211上成像出物象比例1：1的采集图像。由于多个准直器231能够对被用户指纹反射的光线进行准直处理，因此采集图像的图像质量较高，屏组件20能够形成质量较高的比对图像，从而使得电子设备100的指纹识别精度较高。
其中，由于准直器231用于成像出物象比例1：1的采集图像，因此图像传感器21的感光面211的面积与显示面板1上的识别区域11的面积相近。考虑到多个图像传感器21在组装时的公差，彼此靠近的两个图像传感器21之间可以预留合理避让，以提高屏组件20的组装精度和产品良率。此时，识别区域11的面积对应地适当缩小。
其中，封装件24可以先封装多个图像传感器21、后组装光学层23。此时，光学层23可以为包括多个准直器231的一体式结构。例如，各准直器231可以是先形成的具有准直孔的薄膜，而后将各准直器231贴合到对应的图像传感器21的感光面211上。多个准直器231一体成型在同一张薄膜中。
其他实施方式中，光学层23也可包括基底和挡光膜。基底采用透光材料。挡光膜层叠在 基底上。挡光膜上具有多组准直孔，各组准直孔对应形成一个准直器231。
请参阅图8B，图8B是图7所示屏组件20在第二实施方式中的结构示意图。
一种可选实施例中，光学层23包括多个透光小孔232。光学层23可包括基底2321和遮光膜2322。基底2321可以为一体成型结构。遮光膜2322也可以为一体成型结构。遮光膜2322位于基底2321朝向显示面板1的一侧。基底2321采用透光材料，例如玻璃或聚碳酸酯(polycarbonate，PC)。遮光膜2322上具有多个透光小孔232。遮光膜2322采用遮光材料。多个透光小孔232一一对应地正对多个图像传感器21的感光面211设置。各透光小孔232的中心与显示面板1的出光面13之间形成第一间距S1，且与图像传感器21的感光面211之间形成第二间距S2，第一间距S1大于第二间距S2。换言之，各透光小孔232的中心与显示面板1的出光面13之间的距离大于各透光小孔232的中心与图像传感器21的感光面211之间的距离。
在本实施例中，利用小孔成像原理，多个透光小孔232在图像传感器21的感光面211上成像出物象比例X：1的采集图像。X大于1。此时，采集图像的面积小于显示面板1上识别区域11的面积，因此在识别区域11的面积不变的情况下，图像传感器21的感光面211的面积能够减小，使得图像传感器21的成本降低，屏组件20的成本降低。同时，在图像传感器21的感光面211的面积不变的情况下，图像传感器21所对应的识别区域11的面积增加，多个识别区域11的拼接可以采用冗余拼接，从而提高电子设备100的指纹识别准确度。
其中，屏组件20可通过调节第一间距S1和第二间距S2的尺寸，降低图像传感器21的感光面211的面积，或者增加图像传感器21的感光面211所对应的识别区域11的面积。
其中，显示面板1的出光面13为显示面板1远离识别面板2的表面。显示面板1的非出光面14与显示面板1的出光面13相背设置。显示面板1的非出光面14与透光小孔232的中心之间形成间距S3。可通过调节该间距S3的大小，调整第一间距S1的大小。
其中，光学层23的基底2321具有厚度(在垂直于图像传感器21的感光面211的方向上的尺寸)。可通过调节基底2321的厚度，来调整第二间距S2的大小。
可选的，屏组件20还包括透明的粘接层25。粘接层25粘接于显示面板1与光学层23之间。在本实施例中，显示面板1与光学层23之间填充有粘接层25。粘接层25可以粘接光学层23及显示面板1，还可以防止光线因空气层的散射而影响采集图像的质量。粘接层25可采用透明光学胶。
请参阅图8C，图8C是图7所示屏组件20在第三实施方式中的结构示意图。
一种可选实施例中，光学层23包括多个透镜233。多个透镜233一一对应地正对多个图像传感器21的感光面211设置。透镜233用于将用户指纹图像成像并缩小至图像传感器21的感光面211。透镜233用于起到聚光作用。光学层23还包括固定基材234，该固定基材234采用透明材料。多个透镜233固定在固定基材234上，以与固定基材234形成一体式结构。
在本实施例中，透镜233用于将用户指纹图像成像并缩小至图像传感器21的感光面211，图像传感器21的感光面211上所形成的采集图像与对应的识别区域11的面积比小于1，也即物象比例大于1。此时，采集图像的面积小于显示面板1上识别区域11的面积，因此在识别区域11的面积不变的情况下，图像传感器21的感光面211的面积能够减小，使得图像传感器21的成本降低，屏组件20的成本降低。同时，在图像传感器21的感光面211的面积不变的情况下，图像传感器21所对应的识别区域11的面积增加，多个识别区域11的拼接可以采用冗余拼接，从而提高电子设备100的指纹识别准确度。
其中，单个透镜233可包括一个或多个子透镜。在本实施方式中，单个透镜233包括一个子透镜，该子透镜为凸透镜。在其他实施方式中，单个透镜233包括多个子透镜，多个子透镜可以是多个凸透镜，也可以是凹透镜和凸透镜组合。在其他实施方式中，透镜233也可以为利用超材料结构制作的平面透镜。
请参阅图9，图9是图3所示屏组件20在第二实施例中的结构示意图。在第二实施例中，以单个图像传感器21包括一个感光面211为例进行说明。在其他实施例中，单个图像传感器21也可以包括多个感光面211。该实施例的其他特征可参阅第二实施例进行设置，此处不再赘述。
一种可选实施例中，光学层23包括多个光学部230。多个光学部230彼此间隔设置。多个光学部230位于对应的图像传感器21的采集图像的一侧，也即位于图像传感器21的感光面211的上方。多个光学部230一一对应地位于多个图像传感器21上。单个图像传感器21包括多个感光面211时，一个图像传感器21上也可以设置多个光学部230，多个光学部230一一对应地设置在多个感光面211上。其中，识别面板2还包括多个封装体26。多个封装体26与多个光学部230一一对应设置。各封装体26用于将对应的光学部230与图像传感器21封装成一体式的单元组件27。
识别面板2还包括封装件24。封装件24位于衬底22朝向显示面板1的一侧，且围绕多个图像传感器21及多个光学部230设置。一种实施例中，图像传感器21及位于其上方的光学部230可以先形成单元组件27，多个单元组件27固定至衬底22后，通过封装件24将多个单元组件27及衬底22封装成一体式结构。另一种实施例中，图像传感器21及位于其上方的光学部230可以先形成单元组件27，通过封装件24将多个单元组件27封装成一体式结构后，将该结构贴合至衬底22，以完成组装。
在本实施例中，由于对应的光学部230与图像传感器21可形成单元组件27，而后多个单元组件27再依据具体的排布需求固定至衬底22，因此屏组件20可以在不更改物料种类的情况下，通过改变单元组件27的位置形成不同的识别面板2，有利于屏组件20的批量化和多型号化。
其中，单元组件27中的封装体26的材料可以与封装件24的材料相同，也可以不同，本申请对此不作严格限定。一种实施例中，封装体26和封装件24中的一者或二者采用遮光材料，以降低因串光而导致采集图像质量不佳的风险。
请参阅图10A，图10A是图9所示屏组件20在第一实施方式中的结构示意图。
一种可选实施例中，光学层23包括多个准直器231。多个准直器231一一对应地正对多个图像传感器21的感光面211设置。多个准直器231彼此间隔设置。各光学部230均包括一个准直器231(对应于单个传感器21包括一个感光面211的方案)或多个准直器231(对应于单个传感器21包括多个感光面211的方案)。准直器231用于将发散的光线转变成准直光线。其中，对应的图像传感器21和光学部230可以先形成单元组件27、后通过封装件24封装。也即，封装体26先将准直器231固定至对应的图像传感器21，以形成一体化、模块化的单元组件27。然后通过封装件24将多个单元组件27固定至衬底22，以形成识别面板2。
在本实施例中，多个准直器231在图像传感器21的感光面211上成像出物象比例1：1的采集图像。由于多个准直器231能够对被用户指纹反射的光线进行准直处理，因此采集图像的图像质量较高，屏组件20能够形成质量较高的比对图像，从而使得电子设备100的指纹识别精度较高。
其中，由于准直器231用于成像出物象比例1：1的采集图像，因此图像传感器21的感光面211的面积与显示面板1上的识别区域11的面积相近。考虑到多个图像传感器21在组装时的公差，彼此靠近的两个图像传感器21之间可以预留合理避让，以提高屏组件20的组装精度和产品良率。此时，识别区域11的面积对应地适当缩小。
其中，各准直器231可通过晶元级(wafer level)加工工艺直接形成在图像传感器21的感光面211上。例如，可以采用多层遮光光罩(mask)工艺在图像传感器21的感光面211上沉积或蚀刻出准直孔结构，以形成准直器231。
请参阅图10B，图10B是图9所示屏组件20在第二实施方式中的结构示意图。
一种可选实施例中，光学层23包括多个透光小孔232。光学层23可包括基底2321和遮光膜2322，遮光膜2322位于基底2321朝向显示面板1的一侧。基底2321采用透光材料，例如玻璃或聚碳酸酯(polycarbonate，PC)。遮光膜2322上具有多个透光小孔232。遮光膜2322采用遮光材料。多个透光小孔232一一对应地正对多个图像传感器21的感光面211设置。具体的，基底2321包括多个基底部分2323，多个基底部分2323彼此间隔设置。多个基底部分2323一一对应地正对多个图像传感器21设置。遮光膜2322包括多个遮光部分2324，多个遮光部分2324彼此间隔设置，且各遮光部分2324均设有透光小孔232。透光小孔232的数量与对应的图像传感器21上的感光面211的数量相同。多个遮光部分2324一一对应地位于多个基底部分2323上。通过封装体26将各遮光部分2324和基底部分2323固定至对应的图像传感器21，以形成一体化、模块化的单元组件27。
各透光小孔232的中心与显示面板1的出光面13之间形成第一间距S1，且与图像传感器21的感光面211之间形成第二间距S2，第一间距S1大于第二间距S2。换言之，各透光小孔232的中心与显示面板1的出光面13之间的距离大于各透光小孔232的中心与图像传感器21的感光面211之间的距离。
在本实施例中，利用小孔成像原理，多个透光小孔232在图像传感器21的感光面211上成像出物象比例X：1的采集图像。X大于1。此时，采集图像的面积小于显示面板1上识别区域11的面积，因此在识别区域11的面积不变的情况下，图像传感器21的感光面211的面积能够减小，使得图像传感器21的成本降低，屏组件20的成本降低。同时，在图像传感器21的感光面211的面积不变的情况下，图像传感器21所对应的识别区域11的面积增加，多个识别区域11的拼接可以采用冗余拼接，从而提高电子设备100的指纹识别准确度。
其中，屏组件20可通过调节第一间距S1和第二间距S2的尺寸，降低图像传感器21的感光面211的面积，或者增加图像传感器21所对应的识别区域11的面积。
其中，显示面板1的出光面13为显示面板1远离识别面板2的表面。显示面板1的非出光面14与显示面板1的出光面13相背设置。显示面板1的非出光面14与透光小孔232的中心之间形成间距S3。可通过调节该间距S3的大小，调整第一间距S1的大小。
其中，光学层23的基底2321具有厚度(在垂直于图像传感器21的感光面211的方向上的尺寸)。可通过调节基底2321的厚度，来调整第二间距S2的大小。
可选的，屏组件20还包括透明的粘接层25，粘接层25粘接于显示面板1与光学层23之间。在本实施例中，显示面板1与光学层23之间填充有粘接层25。粘接层25可以粘接光学层23及显示面板1，还可以防止光线因空气层的散射而影响采集图像的质量。粘接层25可采用透明光学胶。一种实施例中，粘接层25也可同时覆盖封装件24。
请参阅图10C，图10C是图9所示屏组件20在第三实施方式中的结构示意图。
一种可选实施例中，光学层23包括多个透镜233。多个透镜233一一对应地正对多个图像传感器21的感光面211设置。各光学部230均包括一个透镜233(对应于单个传感器21包括一个感光面211的方案)或多个透镜233(对应于单个传感器21包括多个感光面211的方案)。透镜233用于将用户指纹图像成像并缩小至图像传感器21的感光面211。透镜233用于起到聚光作用。可以通过封装体26将透镜233固定至对应的图像传感器21，以形成一体化、模块化的单元组件27。
在本实施例中，透镜233用于将用户指纹图像成像并缩小至图像传感器21的感光面211，图像传感器21的感光面211上所形成的采集图像与对应的识别区域11的面积比小于1，也即物象比例大于1。此时，采集图像的面积小于显示面板1上识别区域11的面积，因此在识别区域11的面积不变的情况下，图像传感器21的感光面211的面积能够减小，使得图像传感器21的成本降低，屏组件20的成本降低。同时，在图像传感器21的感光面211的面积不变的情况下，图像传感器21所对应的识别区域11的面积增加，多个识别区域11的拼接可以采用冗余拼接，从而提高电子设备100的指纹识别准确度。
其中，单个透镜233可包括一个或多个子透镜。在本实施方式中，单个透镜233包括一个子透镜，该子透镜为凸透镜。在其他实施方式中，单个透镜233包括多个子透镜，多个子透镜可以是多个凸透镜，也可以是凹透镜和凸透镜组合。在其他实施方式中，透镜233也可以为利用超材料结构制作的平面透镜。
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；在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。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 (16)

  1. 一种屏组件，其特征在于，包括显示面板及位于所述显示面板非出光侧的识别面板；
    所述显示面板包括多个识别区域，相邻且彼此间隔的两个所述识别区域之间形成非识别区域，所述识别面板包括多个图像传感器，所述多个图像传感器的感光面用于一一对应地采集位于所述多个识别区域的用户指纹图像；在指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比大于或等于1：5。
  2. 根据权利要求1所述的屏组件，其特征在于，在指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比在1：2至2:1的范围内。
  3. 根据权利要求1所述的屏组件，其特征在于，所述多个识别区域在第一方向上彼此间隔排布。
  4. 根据权利要求3所述的屏组件，其特征在于，所述多个识别区域在第二方向上彼此间隔排布，所述第二方向垂直于所述第一方向。
  5. 根据权利要求1所述的屏组件，其特征在于，所述多个识别区域在第一方向上彼此间隔地排布成行，且在第二方向上彼此间隔地排布成列，所述第二方向垂直于所述第一方向，相邻的两行所述识别区域中的各个所述识别区域均排布于不同列中。
  6. 根据权利要求5所述的屏组件，其特征在于，在指纹覆盖区域中，所有所述识别区域的总面积与所有所述非识别区域的总面积的比在1：0.8至1：1.2的范围内。
  7. 根据权利要求1所述的屏组件，其特征在于，所述多个识别区域包括多个识别区域组，各所述识别区域组中均包括彼此邻接的至少两个所述识别区域，任意相邻的两个所述识别区域组彼此间隔排布。
  8. 根据权利要求1所述的屏组件，其特征在于，单个所述图像传感器包括一个感光面；或者，单个所述图像传感器包括多个感光面。
  9. 根据权利要求1至8中任一项所述的屏组件，其特征在于，所述识别面板还包括衬底及光学层，所述衬底位于所述显示面板的非出光侧，所述多个图像传感器固定于所述衬底朝向所述显示面板的一侧，所述光学层位于所述多个图像传感器与所述显示面板之间，所述光学层用于将位于所述识别区域出光侧的用户指纹图像成像至对应的所述图像传感器的感光面上。
  10. 根据权利要求9所述的屏组件，其特征在于，所述识别面板还包括封装件，所述封装件位于所述衬底朝向所述显示面板的一侧，且围绕所述多个图像传感器设置，所述光学层覆盖所述封装件及所述多个图像传感器。
  11. 根据权利要求9所述的屏组件，其特征在于，所述光学层包括多个光学部，所述多个光学部一一对应地位于所述多个图像传感器上，所述识别面板还包括封装件，所述封装件位于所述衬底朝向所述显示面板的一侧，且围绕所述多个图像传感器及所述多个光学部设置。
  12. 根据权利要求10或11所述的屏组件，其特征在于，所述光学层包括多个准直器，所述多个准直器一一对应地正对所述多个图像传感器的感光面设置。
  13. 根据权利要求10或11所述的屏组件，其特征在于，所述光学层包括多个透光小孔，所述多个透光小孔一一对应地正对所述多个图像传感器的感光面设置，各所述透光小孔的中心与所述显示面板的出光面之间形成第一间距，且与所述图像传感器的感光面之间形成第二间距，所述第一间距大于所述第二间距。
  14. 根据权利要求13所述的屏组件，其特征在于，所述屏组件还包括透明的粘接层，所述粘接层粘接于所述显示面板与所述光学层之间。
  15. 根据权利要求10或11所述的屏组件，其特征在于，所述光学层包括多个透镜,所述多个透镜一一对应地正对所述多个图像传感器的感光面设置，所述透镜用于将所述用户指纹图像成像并缩小至所述图像传感器的感光面。
  16. 一种电子设备，其特征在于，包括壳体及权利要求1至15中任一项所述的屏组件，所述屏组件安装于所述壳体。
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