WO2021147820A1 - 一种电子设备 - Google Patents

一种电子设备 Download PDF

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Publication number
WO2021147820A1
WO2021147820A1 PCT/CN2021/072520 CN2021072520W WO2021147820A1 WO 2021147820 A1 WO2021147820 A1 WO 2021147820A1 CN 2021072520 W CN2021072520 W CN 2021072520W WO 2021147820 A1 WO2021147820 A1 WO 2021147820A1
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WO
WIPO (PCT)
Prior art keywords
light guide
display area
circuit board
electronic device
display module
Prior art date
Application number
PCT/CN2021/072520
Other languages
English (en)
French (fr)
Inventor
谢祥
张翔
Original Assignee
维沃移动通信有限公司
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 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP21744309.2A priority Critical patent/EP4083853A4/en
Publication of WO2021147820A1 publication Critical patent/WO2021147820A1/zh
Priority to US17/869,768 priority patent/US11747545B2/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/401—Transaction verification
    • G06Q20/4014—Identity check for transactions
    • G06Q20/40145—Biometric identity checks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing

Definitions

  • the present invention belongs to the technical field of consumer electronic devices. Specifically, the present invention relates to an electronic device.
  • consumer electronic devices such as smart phones and tablet computers have become indispensable items in consumers' daily lives.
  • the display screens of consumer electronic devices are gradually developing in the direction of full screens.
  • the full-screen design of consumer electronic devices means a high screen-to-body ratio and a narrow bezel design on all four sides. This requires that the fingerprint recognition module used for unlocking or payment functions can only be installed on the back or side of the electronic device. However, it is difficult to arrange the fingerprint recognition module located on the side or the back in an area suitable to be touched when the hand holds the electronic device. Therefore, the utilization rate of this fingerprint recognition module is not high, and it is not favored by consumers.
  • the new type of OLED touch screen due to its self-luminous feature, it can realize optical fingerprint recognition in or under the display module, and the ultrasonic module can also be installed under the flexible OLED panel to realize fingerprint sensing.
  • the LCD touch screen due to the characteristics of its own structure and performance, the LCD touch screen that conforms to the mainstream market is difficult to realize the recognition function of the fingerprint recognition module in or under the display module.
  • An object of the present invention is to provide an improved electronic device.
  • an electronic device including:
  • Equipment main body display module, backlight module and fingerprint identification component
  • the display module is arranged on the surface of the main body of the device
  • the backlight module includes a supporting frame and a light guide assembly
  • the supporting frame is fixedly arranged in the main body of the device, and the supporting frame is provided with a A through hole
  • the light guide assembly is arranged on the supporting frame, and a first gap is formed between the light guide assembly and the display module;
  • the fingerprint identification assembly includes a transmitter and a receiver, the transmitter is arranged in the first gap, and the receiver is arranged on a side of the carrying frame away from the light guide assembly and connected to the first gap.
  • the position of a through hole corresponds.
  • the light guide assembly has a light guide plate, and the light guide plate has a flat surface at a position corresponding to the first through hole.
  • the light guide component has a reflective film, and a second through hole is formed on the reflective film at a position corresponding to the first through hole.
  • the backlight module includes a circuit board, the light guide assembly has an optical film layer, a second gap is formed between the circuit board and the optical film layer, and the first through hole is connected to the first through hole.
  • the positions of the two gaps correspond to each other.
  • the backlight module includes a circuit board, the circuit board is arranged on the light guide assembly, and the emitter is electrically connected to the circuit board.
  • the distance between the light guide component and the display module ranges from 0.3 mm to 1.4 mm.
  • the backlight module further includes a circuit board and a side light source
  • the light guide assembly has a reflective film, a light guide plate and an optical film layer, the optical film layer is arranged on the side of the light guide plate close to the display module, and the reflective film is arranged far away from the light guide plate. On one side of the display module, the reflective film is in contact with the carrier frame;
  • the circuit board is arranged on the light guide plate, the side light source is arranged on the circuit board, the side light source is electrically connected to the circuit board, and the side light source is located at the edge of the light guide plate.
  • the display module is divided into a display area and a non-display area, and the transmitter corresponds to the position of the non-display area.
  • the receiver corresponds to the position of the non-display area
  • the first through hole corresponds to the position of the non-display area
  • the backlight module includes a circuit board, the light guide assembly has an optical film layer, a second gap is formed between the circuit board and the optical film layer, and the first through hole is connected to the first through hole. Corresponding to the position of the two gaps;
  • the display module is divided into a display area and a non-display area, the transmitter corresponds to the position of the non-display area, the receiver corresponds to the position of the non-display area, and the first through hole Corresponding to the position of the non-display area;
  • the optical film layer extends to a position corresponding to the non-display area, and the width of the second gap is greater than the distance between the edge of the optical film layer and the display area.
  • One technical effect of the present invention is that a fingerprint identification component is arranged under the display module of the electronic device, which is convenient to use.
  • FIG. 1 is a schematic internal side view of an electronic device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the fingerprint detection function of the embodiment shown in FIG. 1;
  • Fig. 3 is a schematic internal side view of an electronic device provided by another embodiment of the present invention.
  • the present invention provides an electronic device.
  • the electronic device includes a device main body 3, a display module 1, a backlight module, and a fingerprint identification component.
  • the fingerprint identification component is arranged under the display module 1 and is used to realize fingerprint identification by placing a finger on the display module, which is convenient for detection.
  • the present invention does not limit the specific electronic device form, which can be a mobile phone, a tablet computer, a computer, and other smart electronic devices that adopt a display module and a touch screen.
  • the display module 1 is arranged on the device main body 3 and is located on the surface of the device main body 3.
  • the display module 1 can be made of multiple layers of light-transmitting materials to achieve a display effect, which is not limited in the present invention.
  • the backlight module includes a supporting frame 21 and a light guide assembly, and the backlight module is used to project light to the display module 1 so that a predetermined screen is displayed on the display module 1.
  • the backlight module may adopt liquid crystal display technology, and the display module 1 adopts touch screen technology, so that the backlight module and the display module 1 can be combined to form a liquid crystal touch screen.
  • the backlight module includes a supporting frame 21 and a light guide assembly.
  • the carrying frame 21 is fixedly arranged in the device main body 3 and is used to carry other components of the backlight module in the electronic device.
  • the light guide component is arranged on the carrying component.
  • the light guide assembly is used to guide the light generated by the light source in the backlight module to the display module 1.
  • a first gap 30 is formed between the light guide assembly and the display module 1.
  • the light guide assembly and the display module 1 may be distributed substantially parallel to each other, and the first gap 30 is formed in the thickness direction of the electronic device.
  • the light generated by the backlight module passes through the intervention of the light guide component therein, passes through the first gap 30 and irradiates on the display module 1 to achieve imaging.
  • the fingerprint identification component includes a transmitter 41 and a receiver 42.
  • the emitter is arranged at the first gap 30 between the above-mentioned display module 1 and the light guide assembly.
  • the transmitter 41 is configured to be able to irradiate infrared rays onto the display module 1 from the inside of the display module 1.
  • the receiver 42 is arranged on a side of the supporting frame 21 away from the light guide assembly. At least one first through hole 221 is formed on the supporting frame 21. The position of the receiver 42 corresponds to the position of the first through hole 221, so that the light reflected from the display module 1 back to the light guide assembly can be irradiated through the first through hole 221 On the receiver 42.
  • Fig. 2 shows the optical path of infrared rays in the practical application of the present invention.
  • the display module 1 may be marked with a fingerprint recognition area 33, or the fingerprint recognition area 33 may be displayed on the display module 1 through the backlight module.
  • the present invention does not limit the number of times.
  • the transmitter 41 emits infrared rays to the display module 1, and the infrared rays cover the fingerprint recognition area 33.
  • the user of the electronic device places a finger on the fingerprint recognition area, and the infrared ray irradiated on the fingerprint recognition area is irradiated on the finger, and then is reflected downward and back into the display module 1. Further, infrared rays pass through the display module 1 and the light guide assembly.
  • the infrared rays reflected by the finger carry fingerprint information, and a part of the infrared rays reflected by the mirror can pass through the first through hole 221 and then be received by the receiver 42.
  • the receiver can analyze the received infrared rays, or send the signals generated by the infrared rays to the processing unit for analysis, so that the electronic device can learn the fingerprint information carried by the infrared rays and realize fingerprint recognition.
  • the technical scheme provided by the present invention can realize fingerprint identification on the display screen of the electronic device, and improves the convenience of fingerprint identification application. In particular, it is suitable for electronic devices using LCD touch screens.
  • the emitter 41 is arranged in the first gap 30, and the infrared rays emitted by the emitter 41 will not be interfered or affected by the backlight module, and the reliability is higher.
  • the receiver 42 for receiving and analyzing infrared rays occupies a large space and is difficult to be installed in the first gap 30.
  • the present invention places the receiver 42 on the backlight module and away from the display module 1. , Which is set inside the main body 3 of the device.
  • the carrying frame 21 will block infrared rays.
  • a first through hole 221 is opened on the carrying frame 21, so that infrared rays can be irradiated to the receiver 42 located under the carrying frame 21 to realize the recognition and identification of infrared rays. analyze.
  • the light guide assembly may have a light guide plate 221, and the light guide plate 221 may be made of a light guide material such as glass.
  • the light guide plate 221 is used in the backlight module to guide the light generated by the display lamp to the display module 1, and has the characteristic of allowing light to pass through.
  • the light guide plate 221 may undergo surface treatment such as dot processing, embossing processing, etc., so that it can better play the role of light guide, process the light generated by the display lamp, and improve the appearance of the electronic The screen effect on the display module of the device.
  • the light guide plate 221 Since the light guide plate 221 is a part of the light guide assembly, the infrared rays reflected from the surface of the display module by the finger will pass through the light guide plate 221 and then irradiate to the receiver 42 through the first through hole 221 .
  • the patterns on the light guide plate 221 may interfere with infrared rays.
  • the light guide plate 221 may have a flat surface at a position corresponding to the first through hole 211.
  • the two surfaces of the light guide plate 221 corresponding to the first through hole 211 can be mirrored to form a flat mirror structure, which facilitates the direct penetration of infrared rays and reduces the occurrence of optical phenomena such as refraction, reflection, interference, and diffraction, and ensures The truthfulness of the information carried by infrared light is to reduce distortion.
  • the surface of the light guide plate corresponding to the first through hole may not undergo embossing or dot processing during processing.
  • the light guide assembly may also have a reflective film 223, which is used to reflect the light irradiated from the backlight module that cannot be transmitted to the display module, so that it can irradiate the display module.
  • the reflective film 223 is a component of the light guide assembly, according to the characteristics of the structure distribution, it may reflect infrared rays, so that the infrared rays cannot be irradiated on the receiver 42.
  • the reflective film 223 is provided with a second through hole 2231 at a position corresponding to the first through hole 221, so that infrared rays can be irradiated to
  • the receiver 42 implements a fingerprint recognition function.
  • the reflective film may not cover the receiver 42 and/or the first through hole 221, and the reflective film may not interfere with infrared rays. Circumstances that cause reflections. Opening the second through hole 2231 on the reflective film is an optional embodiment of the present invention, which can improve the reliability of the fingerprint identification function.
  • the backlight module may include a circuit board, and the circuit board is used to control and supply power to the side light source 23 of the backlight module.
  • the light guide assembly may also have an optical film layer 222, which is used to produce optical effects such as refraction and interference of light, so that it can exhibit a better imaging effect.
  • the optical film layer 222 may be disposed near the light guide plate 221. Display one side of module 1.
  • a second gap 20 is left between the circuit board and the optical film layer 222 to prevent the circuit board from interfering with the optical film layer 222 or causing structural extrusion or deformation.
  • the second gap 20 may correspond to the position of the first through hole 221, and the second gap 20 allows infrared rays that are reflected back into the device body 3 to pass through, and then pass through the first through hole 221.
  • the through hole 221 is provided with the receiver 42. Since the optical film layer can play an optical processing function and produce functions such as refraction, diffraction, interference, etc., the optical film layer is likely to cause interference to infrared rays.
  • the circuit board of the backlight module may be directly arranged on the light guide component, for example, on the light guide plate 221 described above.
  • the light guide plate 221 may be designed to have a large enough area to carry the circuit board and the optical film layer 222.
  • the transmitter 41 is electrically connected to the circuit board.
  • the circuit board can control the opening and closing of the transmitter, the illumination intensity, the type of light, and other characteristics.
  • the circuit board itself is used to control the side light source. Connecting the transmitter to the circuit board can save circuits and meet the performance characteristics of the circuit board. It is not necessary to separately configure a circuit board for the transmitter.
  • the transmitter may adopt a form with a certain irradiation angle to radiate infrared rays in the direction of the display module.
  • the infrared rays that can be reflected back to the receiver via the surface of the display module and the user's finger are the actual infrared rays.
  • the upward beam angle range of the transmitter can be selected to be 90°-150°.
  • the position of the receiver is staggered from the position of the transmitter, so that the fingerprint recognition area is also staggered from the transmitter. By controlling the height of the first gap, the area of the fingerprint identification area can be increased, so that the user can realize fingerprint identification within a larger area of the display module when touching.
  • the distance between the light guide component and the display module ranges from 0.3 mm to 1.4 mm. Adjusting the height of the first gap within the above range, on the one hand, can leave enough space to place the emitter, and leave enough space for conventional avoidance and assembly for the display module and the backlight module; on the other hand, it can Try to control the overall thickness of the device body as much as possible to prevent the overall thickness of the electronic device from being too thick, which does not meet the shape requirements.
  • the backlight module may also include a circuit board and a side light source 23.
  • the light guide assembly may further have a reflective film 223, a light guide plate 221 and an optical film layer 222.
  • the optical film layer 222 is arranged on the side of the light guide plate 221 close to the display module 1, and the reflective film 223 is arranged on the side of the light guide plate 221 far away from the display module 1.
  • the components are arranged on the supporting frame 21, and the reflective film 223 is in contact with the supporting frame 21.
  • the direction of the optical film layer from being close to the display module to away from the display module may include a light-shielding tape, an upper light-increasing film, a lower light-increasing film, and a diffusion film.
  • These film structures of the optical film layer can be used for optical processing of imaging light to improve the imaging effect.
  • the light guide plate can be used as the main structure of the entire backlight structure, and it has a sufficient distribution area for supporting circuit boards, optical film layers and other components.
  • the carrying frame is used to carry other components such as light guide plates.
  • the side light source may be arranged on the circuit board, and the circuit board and the side light source are electrically connected. Optionally, the position of the side light source is at the edge of the light guide plate, so that the light generated by it can be more efficiently injected into the light guide plate to play a back light.
  • the display module 1 can be divided into a display area 31 and a non-display area 32.
  • the display area 31 is used to actually perform imaging on the display module 1 for viewing by the user.
  • the non-display area 32 carries components such as a backlight module and a transmitter, and the display module 1 thereon is not used for actual imaging. As shown in FIGS. 1 and 3, the position of the transmitter 41 in the main body of the device corresponds to the position of the non-display area 32.
  • the receiver 42 corresponds to the position of the non-display area 32.
  • the display area 31 swept by infrared rays for fingerprint recognition is relatively small.
  • the light guide component in the display area 31 needs to be adjusted relatively little or not required to deal with the penetration of infrared rays.
  • the first through hole 221 and the second through hole 2231 are not located at the position corresponding to the non-display area 32, but at the guide corresponding to the position of the display area 31. The optical components were not affected.
  • the receiver 42 is arranged at a position corresponding to the display area 31. Therefore, a part of the infrared rays reflected to the display area 31 finally enters the receiver 42, which is the infrared rays that actually produce fingerprint recognition.
  • the supporting frame 21 needs to be provided with a first through hole 221 at a position corresponding to the display area 31.
  • the light guide plate 221 can also be provided with a flat surface in the display area 31, and the reflective film 223 can also be provided with a second through hole 2231 at a position corresponding to the display area 31. This design scheme may affect the final imaging effect of the backlight module and the display module in this area.
  • the light guide plate 221, the optical film layer, and the reflective film may also be made of optical materials that do not affect infrared rays.
  • the above-mentioned light guide assembly does not need to adjust the optical performance in order to adapt to the penetration of infrared rays, and will not affect the actual imaging effect.
  • the advantage of the technical solution shown in FIG. 3 is that the position of the fingerprint recognition area 33 can be closer to the display area 31, and the user has a higher sense of grip and the comfort of touching the fingerprint recognition area with his fingers when using it. , It is more convenient to use.
  • the position of the fingerprint recognition area can be adjusted by adjusting the height of the first gap and the position of the receiver in the main body of the device.
  • the transmitter 41 is located at a position corresponding to the non-display area 32
  • the receiver 42 is located at a position corresponding to the position of the non-display area 32.
  • the first through hole 221 corresponds to the position of the non-display area 32.
  • the edge of the optical film layer 222 close to the circuit board may extend to a position corresponding to the non-display area 32.
  • the width of the second gap 20 between the circuit board and the optical film layer 222 may be greater than the distance between the edge of the optical film layer and the display area 31.
  • this embodiment increases the width B of the second gap 20 and reduces the width A of the circuit board from the display area 31, so that more infrared rays can pass through the second gap 20. Improve the reliability of fingerprint recognition. Extending the edge of the circuit board to a position corresponding to the non-display area 32 can ensure the display effect of the actual imaging effect at the boundary between the display area 31 and the non-display area 32, and reduce the phenomenon of blurred display effect and inconsistent brightness.

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  • Human Computer Interaction (AREA)
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Abstract

一种电子设备，该电子设备包括：设备主体（3）、显示模组（1）、背光模组和指纹识别组件；其中，所述显示模组（1）设置于所述设备主体（3）的表面，所述背光模组包括承载框架（21）和导光组件，所述承载框架（21）固定设置在所述设备主体（3）内，所述承载框架（21）上开设有第一通孔（221），所述导光组件设置在所述承载框架（21）上，所述导光组件与所述显示模组（1）之间形成有第一间隙（30）；所述指纹识别组件包括发射器（41）和接收器（42），所述发射器（42）设置在所述第一间隙（30）中，所述接收器（41）设置在所述承载框架（21）的远离所述导光组件的一侧并与所述第一通孔（221）的位置对应。

Description

一种电子设备
相关申请的交叉引用
本申请主张在2020年1月21日在中国提交的中国专利申请号No.202010073177.X的优先权，其全部内容通过引用包含于此。
技术领域
本发明属于消费类电子设备技术领域，具体地，本发明涉及一种电子设备。
背景技术
近年来，随着半导体、微机电、触摸屏等技术的迅速发展，智能手机、平板电脑等消费类电子设备已成为消费者日常生活中不可或缺的物品。为了给消费者提供更好的显示效果。消费类电子设备的显示屏逐渐向全面屏的方向发展。
消费类电子设备的全面屏设计意味着高屏占比和四边窄边框设计。这要求用于解锁或是支付功能的指纹识别模组只能设置在电子设备的背面或侧面。然而，由于难以将位于侧面或背面的指纹识别模组设置在符合手部握持电子设备时适合触碰到的区域。因此这种指纹识别模组的利用率并不高，并不受到消费者的青睐。
除此之外，对于新型的OLED触摸屏，由于其自发光的特点可实现显示模组内或显示模组下的光学指纹识别，也可以将超声波模组设置与柔性OLED面板下实现指纹感测。但是，符合主流市场的液晶触摸屏由于自身结构及性能的特点，难以在其显示模组内或显示模组下实现指纹识别模组的识别功能。
发明内容
本发明的一个目的是提供一种改进的电子设备。
根据本发明的一个方面，提供了一种电子设备，包括：
设备主体、显示模组、背光模组和指纹识别组件；
其中，所述显示模组设置于所述设备主体的表面，所述背光模组包括承载框架和 导光组件，所述承载框架固定设置在所述设备主体内，所述承载框架上开设有第一通孔，所述导光组件设置在所述承载框架上，所述导光组件与所述显示模组之间形成有第一间隙；
所述指纹识别组件包括发射器和接收器，所述发射器设置在所述第一间隙中，所述接收器设置在所述承载框架的远离所述导光组件的一侧并与所述第一通孔的位置对应。
可选地，所述导光组件具有导光板，在对应于所述第一通孔的位置处，所述导光板具有平整的表面。
可选地，所述导光组件具有反射膜，在对应所述第一通孔的位置处，所述反射膜上形成有第二通孔。
可选地，所述背光模组包括电路板，所述导光组件具有光学膜层，所述电路板与所述光学膜层之间具有第二间隙，所述第一通孔与所述第二间隙的位置相对应。
可选地，所述背光模组包括电路板，所述电路板设置在所述导光组件上，所述发射器与所述电路板电连接。
可选地，所述导光组件与所述显示模组之间的间距范围为0.3mm-1.4mm。
可选地，所述背光模组还包括电路板和侧光源；
所述导光组件具有反射膜、导光板和光学膜层，所述光学膜层设置在所述导光板的靠近所述显示模组的一侧，所述反射膜设置在所述导光板的远离所述显示模组的一侧，所述反射膜与所述承载框架接触；
所述电路板设置在所述导光板上，所述侧光源设置在所述电路板上，所述侧光源与所述电路板电连接，所述侧光源位于所述导光板的边缘处。
可选地，所述显示模组分为显示区和非显示区，所述发射器与所述非显示区的位置相对应。
可选地，所述接收器与所述非显示区的位置相对应，所述第一通孔与所述非显示区的位置对应。
可选地，所述背光模组包括电路板，所述导光组件具有光学膜层，所述电路板与所述光学膜层之间具有第二间隙，所述第一通孔与所述第二间隙的位置相对应；
所述显示模组分为显示区和非显示区，所述发射器与所述非显示区的位置相对应，所述接收器与所述非显示区的位置相对应，所述第一通孔与所述非显示区的位置相对应；
所述光学膜层延伸至与所述非显示区对应的位置，所述第二间隙的宽度大于所述光学膜层的边缘距所述显示区的距离。
本发明的一个技术效果在于，电子设备的显示模组下方设置有指纹识别组件，使用方便。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明一种具体实施方式提供的电子设备的内部侧面示意图；
图2是图1所示的实施方式检测指纹的功能示意图；
图3是本发明另一种实施方式提供的电子设备的内部侧面示意图。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个 附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本发明提供了一种电子设备，如图1所示，该电子设备包括设备主体3、显示模组1、背光模组和指纹识别组件。所述指纹识别组件设置在所述显示模组1下方，用于可以通过将手指放置在显示模组上实现指纹识别，检测方便。本发明并不限制具体的电子设备形式，其可以是手机、平板电脑、电脑等采用了显示模组、触摸屏的智能电子设备。
如图1所示，所述显示模组1设置在所述设备主体3上，其位于设备主体3的表面上。所述显示模组1可以采用多层透光材料制成以达到显示效果，本发明不对此进行限制。
所述背光模组包括承载框架21和导光组件，所述背光模组用于向所述显示模组1投射光线，从而使所述显示模组1上显示出预定的画面。述背光模组可以采用液晶显示技术，所述显示模组1则采用触摸屏技术，使得所述背光模组和所述显示模组1可以组合形成液晶触摸屏。
如图1所示，所述背光模组包括承载框架21和导光组件。所述承载框架21固定设置在所述设备主体3中，其用于承载位于电子设备中的背光模组的其它部件。所述导光组件则设置在所述承载组件上。所述导光组件用于将背光模组中的发光源产生的光线导向所述显示模组1。所述导光组件与所述显示模组1之间构成有第一间隙30。所述导光组件和显示模组1可以呈基本相互平行的分布方式，所述第一间隙30形成在所述电子设备的厚度方向上。背光模组生成的光线经过其中的导光组件干预，经过所述第一间隙30并照射在所述显示模组1上实现成像。
如图1所示，所述指纹识别组件包括发射器41和接收器42。所述发射器设置在上述显示模组1与导光组件之间的第一间隙30处。所述发射器41被配置为能够从所述显示模组1内侧向显示模组1上照射红外线。所述接收器42则设置在所述承载框架21的远离所述导光组件的一侧。所述承载框架21上形成有至少一个第一通孔221。所述接收器42的位置与所述第一通孔221的位置相对应，这样，使得从所述显示模组1上反射回导光组件上的光线可以穿过所述第一通孔221照射在所述接收器42上。
图2示出了本发明实际应用中红外线的光路。所述显示模组1上可以标记有指纹识别区33，或者通过所述背光模组在所述显示模组1上显示出指纹识别区33，本发明不对次进行限制。所述发射器41向所述显示模组1发射红外线，红外线覆盖上述指纹识别区33。 电子设备的使用者将手指放置在指纹识别区上，照射在指纹识别区上的红外线会照射到手指上，进而被向下反射回显示模组1中。进一步地，红外线会穿过显示模组1和所述导光组件。被手指反射的红外线带有指纹信息，一部分红外线镜反射后能够穿过所述第一通孔221，进而被所述接收器42接收到。
所述接收器可以对接收到的红外线进行分析，或者将红外线产生的信号发送给处理单元进行分析，进而使电子设备获悉红外线所携带的指纹信息，实现指纹识别。
本发明提供的技术方案能够在电子设备的显示屏上实现指纹识别，提高了指纹识别应用的便捷程度。特别地，适用于采用液晶触摸屏的电子设备。所述发射器41设置在所述第一间隙30中，其发射的红外线不会受到所述背光模组的干扰和影响，可靠性更高。用于接收、分析红外线的接收器42占用的空间较大，难以设置在所述第一间隙30中，本发明将所述接收器42设置在所述背光模组远离于所述显示模组1的一侧，也即设置在设备主体3的内部。所述承载框架21会对红外线造成遮挡，本发明在所述承载框架21上开设了第一通孔221，使得红外线能够照射到位于承载框架21下方的接收器42上，实现对红外线的识别、分析。
可选地，如图1所示，所述导光组件可以具有导光板221，所述导光板221可以采用玻璃等导光材料制成。所述导光板221在所述背光模组中用于将显示用灯产生的光线引导至所述显示模组1上，其自身具有允许通过光线的特点。在实际应用中，所述导光板221上可以经过网点处理、压花处理等表面处理，从而使得其能够更好的发挥导光作用，对显示用灯产生的光线进行处理，进而提高呈现在电子设备的显示模组上的画面效果。由于所述导光板221属于所述导光组件的一部分，从所述显示模组表面经手指反射回的红外线会穿过导光板221再经过所述第一通孔221照射至所述接收器42。导光板221上的花纹会对红外线造成干扰。可选地，所述导光板221在与所述第一通孔211对应的位置处，其可以具有平整的表面。例如，导光板221对应第一通孔211的两侧表面上均可以经过镜面处理，从而形成平整的镜面结构，便于红外线直接穿过而降低折射、反射、干涉、衍射的光学现象的产生，保证红外线所携带的信息的真实度，即降低失真。可选地，所述导光板的对应于第一通孔的表面可以在加工时就不经过压花、网点处理。
可选地，所述导光组件还可以具有反射膜223，所述反射膜223用于对背光模组中照 射至无法传递至显示模组的光线进行反射，使其能够照射到所述显示模组上，实现成像。由于所述反射膜223是所述导光组件中的一个部件，根据结构分布的特点，其有可能对红外线造成反射作用，使得红外线无法照射到接收器42上。可选地，在如图1、图2所示的实施方式中，所述反射膜223在对应于所述第一通孔221的位置处开设有第二通孔2231，从而使得红外线能够照射到所述接收器42上，实现指纹识别功能。在其它的实施方式中，由于导光组件的结构、材料不同，存在所述反射膜不会遮住接收器42和/或第一通孔221的情况，也存在所述反射膜不会对红外线造成反射的情况。在所述反射膜上开设第二通孔2231是本发明的一种可选实施方式，其能够提高指纹识别功能的可靠性。
可选地，如图1、图2所示，所述背光模组可以包括电路板，所述电路板用于对所述背光模组的侧光源23进行控制、供电。所述导光组件还可以具有光学膜层222，所述光学膜层222用于对光线产生折射、干涉等光学作用，从而使其能够表现出更好的成像效果。在所述导光组件包括所述光学膜层222和上述导光板221的实施方式中，如图1、图2所示，所述光学膜层222可以设置在所述导光板221的靠近所述显示模组1的一侧。所述电路板与所述光学膜层222之间留有第二间隙20，避免所述电路板对所述光学膜层222造成干扰或者引起结构上的挤压、变形。可选地，所述第二间隙20可以与所述第一通孔221的位置相对应，所述第二间隙20供被反射回设备主体3内的红外线穿过，进而穿过所述第一通孔221、设置所述接收器42。由于所述光学膜层能够发挥光学处理作用，对光线产生折射、衍射、干涉等作用，因此所述光学膜层容易对红外线造成干扰。通过上述实施方式，既可以避免照射至所述接收器42上的红外线受到所述光学膜层的干扰，又利用了所述电路板与所述光学膜层之间本身需要设计的第二间隙。这种实施方式提高了空间利用率，并且降低了红外线的失真率，提高了指纹识别的准确性和可靠性。
可选地，如图1所示，所述背光模组的电路板可以直接设置在所导光组件上，例如设置在上述导光板221上。导光板221可以设计成具有足够大的面积，用来承载所述电路板和光学膜层222。所述发射器41则与所述电路板形成电连接。所述电路板可以对所述发射器的开启关闭、照射强度、光线种类等特性进行控制。所述电路板本身用于对侧光源进行控制，将发射器连接至电路板既可以节省电路，又符合电路板的性能特点，不必为发射器单独配置线路板。
在本发明的实施方式中，所述发射器可以采用具有一定照射角度的形式，向显示模组的方向放射红外线。能够经显示模组的表面以及用户的手指反射回到所述接收器的红外线为实际产生作用的红外线。所述发射器向上放射的张角范围可选为90°-150°。所述接收器的位置与所述发射器的位置错开，这样，上述指纹识别区也与发射器错开。通过控制所述第一间隙的高度，可以增大上述指纹识别区的面积，从而使得用户能够在触碰更大的显示模组面积内实现指纹识别。可选地，所述导光组件与所述显示模组之间的间距范围为0.3mm-1.4mm。在上述范围内调节所述第一间隙的高度，一方面能够留出足够的空间放置所述发射器，为显示模组和背光模组留出足够的常规避让、装配空间；另一方面，能够尽量控制所述设备主体的整体厚度，避免电子设备整体的厚度过厚，不满足外形需要。
对于所述背光模组的结构，参照图1说明可选的结构特点。所述背光模组还可以包括电路板和侧光源23。所述导光组件则还可以具有反射膜223、导光板221和光学膜层222。光学膜层222设置在所述导光板221的靠近所述显示模组1的一侧，所述反射膜223设置在所诉导光板221的远离所述显示模组1的一侧，整个导光组件设置在所述承载框架21上，所述反射膜223与所述承载框架21接触。所述光学膜层由靠近显示模组至远离显示模组的方向可以包括遮光胶带、上增光膜、下增光膜、扩散膜。所述光学膜层的这些膜层结构能够用于成像的光线进行光学处理，提高成像效果。所述导光板可以作为整个背光结构的主体结构，其具有足够的分布面积用于承托电路板、光学膜层等部件。所述承载框架则用于承载导光板等其它部件。所述侧光源可以设置在所述电路板上，所述电路板与所述侧光源形成电连接。可选地，侧光源的位置处在所述导光板的边缘处，使其产生的光线能够更高效的射入导光板，起到背光作用。
可选地，所述显示模组1可以分为显示区31和非显示区32。所述显示区31用于实际在显示模组1上进行成像，供使用者观看。所述非显示区32承载有背光模组、发射器等部件，其上的显示模组1不用于实际成像。如图1、图3所示，所述发射器41在所述设备主体中的位置与所述非显示区32的位置相对应。
可选地，在如图1、图2所示的实施方式中，所述接收器42与所述非显示区32的位置相对应。这样，用于指纹识别的红外线扫过的显示区31相对较小。所述导光组件在显示区31需要应对红外线的穿过而做出的调整相对较少，或不需要做出调整。在图1所示 的实施方式中，所述第一通孔221、第二通孔2231均不处在与所述非显示区32相对应的位置，处在与显示区31位置相对应的导光组件没有收到影响。
在如图3所示的实施方式中，所述接收器42设置在了与所述显示区31相对应的位置。因此，反射至所述显示区31的一部分红外线最终进入所述接收器42，其是实际产生指纹识别作用的红外线。在这种实施方式中，所述承载框架21需要在与所述显示区31相对应的位置处设置第一通孔221。类似地，所述导光板221也可以在显示区31中设置平整表面，所述反射膜223也可以在与显示区31对应的位置设置第二通孔2231。这种设计方案有可能对背光模组和显示模组在该区域的最终成像效果造成影响。在优选的实施方式中，也可以采用对红外线不会造成影响的光学材料制成所述导光板221、光学膜层、反射膜。这样，上述导光组件就可以不用为了适应红外线的穿透而做出光学性能的调整，不会影响实际成像效果。图3所示的技术方案的优点在于，上述指纹识别区33的位置可以更靠近显示区31，使用者在使用时，手部的握持感以及用手指触碰指纹识别区的舒适度更高，使用更便捷。
在本发明的实施方式中，通过调整所述第一间隙的高度以及所述接收器在设备主体中的位置，能够对所述指纹识别区的位置进行调节。
可选地，在如图1、图2所示的实施方式中，所述发射器41位于与所述非显示区32对应的位置，所述接收器42与所述非显示区32的位置相对应，所述第一通孔221与所述非显示区32的位置对应。所述光学膜层222的靠近所述电路板的边缘可以延伸至对应所述非显示区32的位置。所述电路板与光学膜层222之间的第二间隙20的宽度可以大于所述光学膜层的边缘距所述显示区31的距离。如图2所示，这种实施方式增大了第二间隙20的宽度B，缩小了电路板便于距显示区31的宽度A，从而是更多红外线能够从所述第二间隙20处通过，提高指纹识别的可靠性。而使电路板的边缘延伸至对应于非显示区32的位置，能够保证实际成像效果在显示区31与非显示区32的边界处的显示效果，降低出现显示效果模糊、亮度不一致的现象。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发 明的范围由所附权利要求来限定。

Claims (10)

  1. 一种电子设备，包括：
    设备主体、显示模组、背光模组和指纹识别组件；
    其中，所述显示模组设置于所述设备主体的表面，所述背光模组包括承载框架和导光组件，所述承载框架固定设置在所述设备主体内，所述承载框架上开设有第一通孔，所述导光组件设置在所述承载框架上，所述导光组件与所述显示模组之间形成有第一间隙；
    所述指纹识别组件包括发射器和接收器，所述发射器设置在所述第一间隙中，所述接收器设置在所述承载框架的远离所述导光组件的一侧并与所述第一通孔的位置对应。
  2. 根据权利要求1所述的电子设备，其中，所述导光组件具有导光板，在对应于所述第一通孔的位置处，所述导光板具有平整的表面。
  3. 根据权利要求1所述的电子设备，其中，所述导光组件具有反射膜，在对应所述第一通孔的位置处，所述反射膜上形成有第二通孔。
  4. 根据权利要求1所述的电子设备，其中，所述背光模组包括电路板，所述导光组件具有光学膜层，所述电路板与所述光学膜层之间具有第二间隙，所述第一通孔与所述第二间隙的位置相对应。
  5. 根据权利要求1所述的电子设备，其中，所述背光模组包括电路板，所述电路板设置在所述导光组件上，所述发射器与所述电路板电连接。
  6. 根据权利要求1所述的电子设备，其特征在于，所述导光组件与所述显示模组之间的间距范围为0.3mm-1.4mm。
  7. 根据权利要求1-6任意之一所述的电子设备，其中，所述背光模组还包括电路板和侧光源；
    所述导光组件具有反射膜、导光板和光学膜层，所述光学膜层设置在所述导光板的靠近所述显示模组的一侧，所述反射膜设置在所述导光板的远离所述显示模组的一侧，所述反射膜与所述承载框架接触；
    所述电路板设置在所述导光板上，所述侧光源设置在所述电路板上，所述侧光源 与所述电路板电连接，所述侧光源位于所述导光板的边缘处。
  8. 根据权利要求1-6任意之一所述的电子设备，其中，所述显示模组分为显示区和非显示区，所述发射器与所述非显示区的位置相对应。
  9. 根据权利要求8所述的电子设备，其中，所述接收器与所述非显示区的位置相对应，所述第一通孔与所述非显示区的位置对应。
  10. 根据权利要求1-6任意之一所述的电子设备，其中，所述背光模组包括电路板，所述导光组件具有光学膜层，所述电路板与所述光学膜层之间具有第二间隙，所述第一通孔与所述第二间隙的位置相对应；
    所述显示模组分为显示区和非显示区，所述发射器与所述非显示区的位置相对应，所述接收器与所述非显示区的位置相对应，所述第一通孔与所述非显示区的位置相对应；
    所述光学膜层延伸至与所述非显示区对应的位置，所述第二间隙的宽度大于所述光学膜层的边缘距所述显示区的距离。
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