Optical fingerprint module and electronic equipment

Abstract

The present application discloses an optical fingerprint module and an electronic device. The optical fingerprint module is used for fingerprint detection on the side of the electronic device. The optical fingerprint module includes an optical fingerprint chip disposed inside the electronic device and a flexible circuit board connected to the optical fingerprint chip, and a light-emitting component is integrated on the flexible circuit board; the light-emitting component is configured to emit light to a light-transmitting area located on the side of the electronic device; the optical fingerprint chip is configured to receive the light reflected by a finger located above the light-transmitting area for fingerprint detection. Since the light-emitting component is integrated on the flexible circuit board, the optical fingerprint module can directly emit light to the light-transmitting area located on the side of the electronic device through the light-emitting component, so that the optical fingerprint chip receives the light reflected by the finger located above the light-transmitting area, thereby realizing fingerprint detection on the side of the electronic device, and the light reflected by the finger does not need to pass through the screen of the electronic device, and it has a high light transmittance and does not damage the screen.

Description

Technical Field

[0001] The present invention generally relates to the technical field of fingerprint recognition, and in particular to an optical fingerprint module and an electronic device. Background Art

[0002] With the rapid development of fingerprint recognition technology, systems that use fingerprints to complete identity authentication and recognition have been widely used in recent years, especially in portable electronic devices such as mobile phones and tablets. Based on consumers' increasingly high requirements for the functions and appearance of electronic devices such as mobile terminals, research and design of fingerprint functions are also very important.

[0003] At present, there are two main design schemes for fingerprint modules of electronic devices. One is to set an ordinary optical fingerprint or ultra-thin optical fingerprint under the terminal screen, and the other is to open a through hole in the middle frame on the side of the electronic device and assemble the capacitive fingerprint module inside the middle frame through the through hole.

[0004] However, since ordinary optical fingerprints and ultra-thin optical fingerprints are set under the screen of the electronic device, the finger needs to reflect the light emitted by the OLED screen, and the light needs to penetrate the OLED screen twice. The OLED screen needs to emit strong light each time the fingerprint is recognized, which will cause the OLED screen to be burned. When used at night, it will cause damage to the human eyes. In addition, both ordinary optical fingerprint modules and ultra-thin optical fingerprints need to open blind holes or through holes at the bottom of the middle frame during design, which weakens the strength of the middle frame and reduces the battery capacity. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an optical fingerprint module and an electronic device, which can be used for fingerprint detection on the side of the electronic device without damaging the screen, maintaining the strength of the middle frame, and improving the battery capacity.

[0006] In a first aspect, an embodiment of the present application provides an optical fingerprint module for fingerprint detection on the side of an electronic device, wherein the optical fingerprint module comprises an optical fingerprint chip disposed inside the electronic device and a flexible circuit board connected to the optical fingerprint chip, wherein a light-emitting component is integrated on the flexible circuit board;

[0007] The light emitting component is used to emit light to the light-transmitting area located on the side of the electronic device;

[0008] The optical fingerprint chip is used to receive light reflected from the finger above the light-transmitting area for fingerprint detection.

[0009] In another embodiment of the present application, the optical fingerprint module further includes a touch component, the touch component is integrated on the flexible circuit board, and the touch component is electrically connected to the light-emitting component and the optical fingerprint chip respectively;

[0010] The touch component is used to respond to the touch operation of the finger located above the light-transmitting area, generate a trigger signal and send it to the light-emitting component and the optical fingerprint chip.

[0011] In another embodiment of the present application, the optical fingerprint module further includes a light-transmitting plate, and the light-transmitting plate is located in the light-transmitting area.

[0012] In another embodiment of the present application, the light-transmitting plate is directly opposite to the sensing area of ​​the optical fingerprint chip.

[0013] In another embodiment of the present application, the optical fingerprint module further includes an optical deflector, which is used to receive light transmitted from the light-transmitting plate and deflect the light to the sensing area of ​​the optical fingerprint chip.

[0014] In another embodiment of the present application, the optical deflecting element is a prism.

[0015] In another embodiment of the present application, the optical fingerprint module further includes a support member, which is bonded and connected to the flexible circuit board.

[0016] In another embodiment of the present application, the optical fingerprint chip is bonded and connected to the light-transmitting plate.

[0017] In a second aspect, the present application provides an electronic device, which includes an optical fingerprint module as in the first aspect and a light-transmitting area located on the side of the electronic device; the light-emitting component of the optical fingerprint module is used to emit light to the light-transmitting area.

[0018] In summary, the optical fingerprint module and electronic device provided in the embodiment of the present application are used for fingerprint detection on the side of the electronic device. The optical fingerprint module includes an optical fingerprint chip arranged inside the electronic device and a flexible circuit board connected to the optical fingerprint chip. The flexible circuit board is integrated with a light-emitting component, and the light-emitting component is used to emit light to the light-transmitting area located on the side of the electronic device. The optical fingerprint chip is used to receive the light reflected by the finger located above the light-transmitting area to perform fingerprint detection. Since the optical fingerprint module is respectively integrated with light-emitting components on the flexible circuit board, it can directly emit light to the light-transmitting area located on the side of the electronic device through the light-emitting components, so that the optical fingerprint chip receives the light reflected by the finger located above the light-transmitting area, thereby realizing fingerprint detection on the side of the electronic device, and the light reflected by the finger does not need to pass through the screen of the electronic device, and its light transmittance is high and will not damage the screen. At the same time, the optical fingerprint module is arranged inside the electronic device, and there is no need to open a blind hole or a through hole in the middle frame, which maintains the strength of the middle frame and improves the battery capacity.

[0019] Furthermore, the embodiment of the present application emits light to a light-transmitting area located on the side of the electronic device through a light-emitting component, so that the optical fingerprint chip receives light reflected by the finger, thereby realizing optical fingerprint detection on the side of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 A schematic diagram of the structure of a traditional fingerprint module provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a portion of the structure of a conventional fingerprint module provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of an optical fingerprint module provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the exploded structure of the optical fingerprint module provided in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of the structure of an optical fingerprint module provided in another embodiment of the present application;

[0026] Figure 6 A schematic diagram of an exploded structure of an optical fingerprint module provided in another embodiment of the present application;

[0027] Figure 7 A schematic diagram of a fingerprint detection method according to another embodiment of the present application;

[0028] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0029] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0030] Fig.10 A schematic diagram of the structure of an electronic device provided in another embodiment of the present application;

[0031] Fig.11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0032] Description of reference numerals:

[0033] 10-middle frame; 20-through hole; 30-fingerprint module; 40-OLED layer; 50-glass cover layer; 100-optical fingerprint module; 110-optical fingerprint chip; 120-flexible circuit board; 121-light-emitting component; 122-touch component; 130-light-transmitting plate; 140-support; 150-optical deflection element; 151-exit surface; 152-reflection surface; 160-light-transmitting area; 170-side; 180-glue layer; 200-electronic device; 201-microprocessor; 202-memory; 203-peripheral device interface; 204-RF circuit; 205-sensor; 206-power supply. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0036] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described can be implemented in an order other than those illustrated or described herein.

[0037] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules that are inherent to these processes, methods, products, or apparatuses that are not explicitly listed.

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It is understandable that with the rapid development of portable electronic devices, especially mobile phones and tablets, more and more new technologies are being applied to these electronic devices, especially fingerprint recognition technology, which can complete the identity authentication of electronic device users through fingerprint recognition.

[0040] At present, there are two design schemes for fingerprint modules of electronic devices. One is the ordinary optical fingerprint and ultra-thin optical fingerprint detection scheme set under the screen of the electronic device, and the other is to open a through hole in the side frame of the electronic device and install the capacitive fingerprint module inside the through hole for fingerprint detection. Figure 1 As shown, the optical fingerprint detection solution is to open a through hole 20 in the middle frame 10 of the electronic terminal, and install the fingerprint module 30 through the through hole 20 in the small plate area of ​​the middle frame 10. The OLED layer 40 and the glass cover layer 50 are arranged in sequence above the fingerprint module 30. When the finger touches the glass cover layer 50, the OLED layer 40 automatically emits light, and the fingerprint module 30 receives the light reflected from the finger and passing through the glass cover layer 50 to detect the fingerprint of the finger. Please refer to Figure 2 As shown, the ultra-thin optical fingerprint detection solution is to open a blind hole 60 on the upper part of the middle frame 10, and assemble the fingerprint module 30 inside the blind hole 60, or to open a stepped through hole on the middle frame, and assemble the optical fingerprint module on the middle frame from the front or back of the electronic device middle frame. However, ordinary optical fingerprints and ultra-thin optical fingerprints are set under the screen of the electronic device, and the finger needs to reflect the light emitted by the OLED screen. The light needs to penetrate the OLED screen twice. Each time the fingerprint is recognized, the OLED screen needs to emit strong light, which will cause the OLED screen to be burned. When used at night, it will cause damage to the human eyes. In addition, the design of ordinary optical fingerprint modules and ultra-thin optical fingerprints requires blind holes or through holes in the middle frame, which weakens the strength of the middle frame and reduces the battery capacity. For folding screen mobile phones, since the screen surface must be a foldable substrate, ordinary optical fingerprints and ultra-thin optical fingerprints cannot be set under the screen.

[0041] Based on the above defects, the optical fingerprint module provided by the present application is used for fingerprint detection on the side of an electronic device. Compared with the related art, since the light-emitting components are respectively integrated on the flexible circuit board, light can be directly emitted to the light-transmitting area on the side of the electronic device through the light-emitting components, so that the optical fingerprint chip receives the light reflected by the finger above the light-transmitting area, thereby realizing fingerprint detection on the side of the electronic device. The light reflected by the finger does not need to pass through the screen of the electronic device, and its transmittance is high and will not damage the screen. At the same time, the optical fingerprint module is arranged inside the electronic device, and there is no need to open blind holes or through holes in the middle frame, thereby maintaining the strength of the middle frame, improving the battery capacity, and having a wide applicability, and can be applied to folding screen mobile phones.

[0042] The optical fingerprint module provided in this embodiment can be applied to electronic devices such as mobile phones, tablets and smart wearable devices. Optionally, the smart wearable device can be a smart bracelet, a wearable smart watch, etc. Fingerprint detection through the optical fingerprint module can realize the function of waking up the electronic device interface. When the electronic device has built-in application software, it can also realize the function of unlocking the application software in the electronic device.

[0043] For ease of understanding and explanation, the following Figures 3 to 11 The optical fingerprint module and electronic device provided in the embodiments of the present application are described in detail.

[0044] Figure 3 FIG. 1 is a schematic diagram of the structure of an optical fingerprint module provided in an embodiment of the present application. Figure 3 As shown, the optical fingerprint module is used for fingerprint detection on the side of the electronic device, and includes an optical fingerprint chip 110 disposed inside the electronic device and a flexible circuit board 120 connected to the optical fingerprint chip 110; a light-emitting component 121 is integrated on the flexible circuit board 120. The light-emitting component 121 is used to emit light to the light-transmitting area on the side of the electronic device; the optical fingerprint chip 110 is used to receive light reflected by a finger located above the light-transmitting area to perform fingerprint detection.

[0045] Optionally, the light emitting component 121 may be an LED lamp, and there may be at least one LED lamp, for example, two or more LED lamps, and the light emitted by the LED lamp may be near ultraviolet light, purple light, blue light, green light, red light, near infrared light, white light, etc.

[0046] The flexible printed circuit board 120 (FPC for short) is a high-strength, reliable, and excellently flexible printed circuit board supported by polyimide or polyester film as a substrate, and may include a rigid component formed by aluminum or stainless steel.

[0047] The optical fingerprint chip 110 can be used to detect fingerprint information of fingers or other parts of the human body. The optical fingerprint chip 110 is a device with photoelectric conversion, with higher sensitivity and a larger sensing area. The light receiving area of ​​the sensing area can be customized according to the area of ​​the optical detection chip.

[0048] Optionally, the optical fingerprint module also includes a touch component 122, which is integrated on the flexible circuit board 120 and electrically connected to the light-emitting component 121 and the optical fingerprint chip 110 respectively; the touch component 122 is used to respond to the touch operation of the finger located above the light-transmitting area, generate a trigger signal and send it to the light-emitting component 121 and the optical fingerprint chip 110.

[0049] In this embodiment, the touch component 122 may be a touch sensor, which is used to detect a trigger signal of a user's finger and send the trigger signal to the light emitting component 121 and the optical fingerprint chip 110. Optionally, the touch component 122 may be one or more. The touch component 122 can sensitively detect whether there is a touch operation of a finger on the side of the electronic device.

[0050] The above-mentioned touch component 122 and light-emitting component 121 are respectively integrated on the flexible circuit board 120. When the touch component 122 sends a trigger signal to the light-emitting component 121 and the optical fingerprint chip 110, the light-emitting component 121 responds to the trigger signal and emits light to the light-transmitting area located on the side of the electronic device. The optical fingerprint chip 110 receives and responds to the trigger signal, and wakes up the chip to start working normally.

[0051] Optionally, the optical fingerprint module 100 also includes a light-transmitting plate 130, which is located in a light-transmitting area on the side of the electronic device. The light-transmitting area is located on the side of the electronic device. A groove may be provided in the light-transmitting area. The light-transmitting plate 130 is disposed in the groove of the light-transmitting area, and the light-transmitting plate 130 is directly opposite to the sensing area of ​​the optical fingerprint chip 110. The optical fingerprint chip 110 is bonded and connected to the light-transmitting plate 130.

[0052] In this embodiment, the light transmittance of the light-transmitting plate 130 can be 90%, and the light emitted by the light-emitting component 121 can pass through the light-transmitting plate 130. The light-emitting component 121 emits light in the direction of the light-transmitting plate 130, so that the finger above the light-transmitting plate 130 reflects the light to form a reflected light for detection by the optical fingerprint chip 110. Optionally, the light-transmitting plate 130 can be a glass cover plate, and the main material of the light-transmitting plate can be silicon dioxide, which plays a role in protecting the internal structure of the mobile phone. The glass cover plate is chemically strengthened and physically strengthened, and the common thickness can be 0.7mm, 1.1mm, 2.0mm, 3.0mm, etc.

[0053] It should be noted that the optical fingerprint module 100 further includes a support member 140, and the support member 140 is attached and connected to the flexible circuit board 120. The support member 140 is used to support and fix the flexible circuit board 120. Optionally, the support member 140 can be a steel sheet or an aluminum alloy sheet.

[0054] Figure 4 This is a schematic diagram of the structure of the optical fingerprint module provided in this embodiment. Figure 4 As shown, the optical fingerprint module includes a light-transmitting plate 130 , an optical fingerprint chip 110 , a flexible circuit board 120 , and a support member 140 , and the flexible circuit board 120 is integrated with a touch component 122 and a light-emitting component 121 .

[0055] The flexible circuit board 120 can be configured as a long strip with a width less than or equal to 3 mm and a length greater than or equal to 50 mm. The length and width can be customized according to the actual size of the side of the electronic device. The positions of the light-transmitting plate 130, the flexible circuit board 120, the optical fingerprint chip 110, and the support member 140 are parallel to the side of the electronic device.

[0056] During fingerprint detection, when a finger touches the light-transmitting plate arranged on the side of the electronic device, the touch component receives a trigger signal from the finger, and then sends the trigger signal to the light-emitting component and the optical fingerprint chip, so that the optical fingerprint chip starts to work normally. After receiving the trigger signal, the light-emitting component emits light to the light-transmitting area on the side of the electronic device, so that the finger receives the light emitted by the optical component and emits the light to the optical fingerprint chip. The optical fingerprint chip receives the light reflected by the finger, collects the fingerprint information of the finger, and compares the fingerprint information of the finger with the pre-stored fingerprint information. When the comparison is consistent, it indicates that the finger has successfully unlocked the electronic device. When the comparison is inconsistent, it indicates that the finger has failed to unlock the electronic device.

[0057] The optical fingerprint module provided in this embodiment is used for fingerprint detection on the side of an electronic device. The optical fingerprint module includes an optical fingerprint chip arranged inside the electronic device and a flexible circuit board connected to the optical fingerprint chip. The flexible circuit board is integrated with a light-emitting component, which is used to emit light to a light-transmitting area located on the side of the electronic device, and the optical fingerprint chip is used to receive light reflected by a finger located above the light-transmitting area to perform fingerprint detection. Since the optical fingerprint module is respectively integrated with light-emitting components on the flexible circuit board, it can directly emit light to the light-transmitting area located on the side of the electronic device through the light-emitting components, so that the optical fingerprint chip receives light reflected by the finger located above the light-transmitting area, thereby realizing fingerprint detection on the side of the electronic device, and the light reflected by the finger does not need to pass through the screen of the electronic device, and its light transmittance is high and will not damage the screen. At the same time, the optical fingerprint module is arranged inside the electronic device, and there is no need to open a blind hole or a through hole in the middle frame, which maintains the strength of the middle frame and improves the battery capacity.

[0058] Optionally, see Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of an optical fingerprint module provided by another embodiment of the present application. Figure 5 As shown, the optical fingerprint module includes a light-transmitting plate 130 , an optical fingerprint chip 110 , a flexible circuit board 120 , and a support member 140 , and the flexible circuit board 120 is integrated with a touch component 122 and a light-emitting component 121 .

[0059] The optical fingerprint module also includes an optical deflector 150 , which corresponds to the position of the optical fingerprint chip 110 . The optical deflector 150 is used to receive light transmitted from the light-transmitting plate 130 and deflect the light to the sensing area of ​​the optical fingerprint chip 110 .

[0060] It should be noted that the optical deflector 150 can be arranged below the flexible circuit board 120 and corresponds to the position of the optical fingerprint chip 110. The position of the optical deflector 150 is conducive to providing better reflected light to the optical fingerprint chip 110 and improving the fingerprint detection function. Optionally, the optical deflector can be a prism.

[0061] See also Figure 6 As shown, the position of the light-transmitting plate 130 of the optical fingerprint module is parallel to the side of the electronic device, the positions of the support member 140 and the optical fingerprint chip 110 are perpendicular to the side of the electronic device, and the flexible circuit board 120 is in the shape of a "7", which can be divided into two parts, namely the first part and the second part, wherein the first part is parallel to the side of the electronic device, and the second part is perpendicular to the side of the electronic device, and the first part is integrated with the touch component 122 and the light-emitting component 121. The optical deflector 150 can be arranged below the flexible circuit board 120, and can include an exit surface 151 and a reflection surface 152, wherein the exit surface 151 of the optical deflector 150 can be bonded to the optical fingerprint chip 110 through a transparent adhesive layer, for example, the transparent adhesive layer can be an OCA (Optically Clear Adhesive) optical adhesive, and the reflection surface 152 of the optical deflector 150 is used to receive the light reflected by the finger and deflect the light at a certain angle, so that it is deflected to the sensing area of ​​the optical fingerprint chip 110 through the exit surface 151.

[0062] The optical deflection element may be, for example, a 45° total reflection prism, which can totally reflect the reflected light from the finger, so that the reflected light is incident vertically into the optical fingerprint chip, thereby performing fingerprint detection.

[0063] During fingerprint detection, when a finger touches a light-transmitting plate disposed on the side of the electronic device, the touch component located on the first part of the flexible circuit board receives a trigger signal from the finger, and then sends the trigger signal to the light-emitting component located on the first part of the flexible circuit board and the optical fingerprint chip parallel to the second part of the flexible circuit board, so that the optical fingerprint chip starts to work normally. After receiving the trigger signal, the light-emitting component generates light and emits the light in the direction of the light-transmitting plate, so that the finger receives the light emitted by the optical component and emits the light to the optical deflection element, and the optical deflection element deflects the light to the sensing area of ​​the optical fingerprint chip. The optical fingerprint chip receives the reflected light from the finger, collects the fingerprint information of the finger, and compares the fingerprint information of the finger with the pre-stored fingerprint information. When the comparison is consistent, it indicates that the finger has successfully unlocked the electronic device. When the comparison is inconsistent, it indicates that the finger has failed to unlock the electronic device.

[0064] This embodiment provides an optical deflector in the optical fingerprint module, which can accurately deflect the light transmitted through the glass cover to the sensing area of ​​the optical fingerprint chip through the optical deflector, thereby realizing optical fingerprint detection through the side of the electronic device.

[0065] On the other hand, an embodiment of the present application provides a fingerprint detection method, which is applied to an electronic device, wherein the electronic device is provided with an optical fingerprint module located on the side, such as Figure 7 As shown, the method includes:

[0066] S101, a light emitting component emits light toward a light-transmitting area located at a side of the electronic device.

[0067] S102: When the finger is located in the light-transmitting area, the optical fingerprint chip receives the light reflected by the finger and performs fingerprint detection based on the reflected light.

[0068] For details, please refer to Figure 3 As shown, the light-transmitting plate in the optical fingerprint module is opposite to the sensing area of ​​the optical fingerprint chip. When the finger touches the light-transmitting plate at the side of the electronic device, the touch component corresponds to the touch operation of the finger above the light-transmitting area, generates a trigger signal and sends the trigger signal to the light-emitting component and the optical fingerprint chip, so that the optical fingerprint chip starts working. After receiving the trigger signal, the light-emitting component responds to the trigger signal to generate light. Since the positions of the optical component and the light-transmitting plate correspond, the light emitted by the light-emitting component can pass through the light-transmitting plate, and the finger above the light-transmitting plate reflects the light and sends it to the optical fingerprint chip, so that the optical fingerprint chip detects the fingerprint of the finger based on the reflected light.

[0069] Among them, after the optical fingerprint chip receives the reflected light from the finger, it collects the fingerprint information of the finger and compares the fingerprint information of the finger with the pre-stored fingerprint information. If the comparison is consistent, it means that the finger has successfully unlocked the electronic device. If the comparison is inconsistent, it means that the finger has failed to unlock the electronic device.

[0070] Please continue to see Figure 5 As shown, the optical fingerprint module includes an optical deflector, and a light-transmitting plate is arranged on the side of the electronic device. When a finger touches the light-transmitting plate on the side of the electronic device, the touch component receives a trigger signal from the finger, and sends the trigger signal to the light-emitting component and the optical fingerprint chip, so that the optical fingerprint chip starts to work normally. The light-emitting component receives and responds to the trigger signal to generate light that passes through the light-transmitting plate to illuminate the finger. The finger emits the light to the optical deflector, so that the optical deflector deflects the light at a preset angle to the sensing area of ​​the optical fingerprint chip. The optical fingerprint chip receives the reflected light from the finger, collects the fingerprint information of the finger, and compares the fingerprint information of the finger with the pre-stored fingerprint information. When the comparison is consistent, it indicates that the finger successfully unlocks the electronic device. When the comparison is inconsistent, it indicates that the finger fails to unlock the electronic device.

[0071] In the embodiment of the present application, the touch component responds to the touch operation of the finger above the light-transmitting area on the side of the electronic device and sends it to the light-emitting component and the optical fingerprint chip, so that the light-emitting component generates light and emits it to the light-transmitting plate, so that the optical fingerprint chip receives the reflected light from the finger, thereby realizing optical fingerprint detection through the side of the electronic device.

[0072] In addition, by providing an optical deflector in the optical fingerprint module, the reflected light from the finger can be deflected, so that the sensing area of ​​the optical fingerprint chip accurately receives the reflected light from the finger, thereby realizing optical fingerprint detection through the side of the electronic device.

[0073] On the other hand, an embodiment of the present application provides an electronic device. Figure 8 As shown, the electronic device includes the above-mentioned optical fingerprint module 100 and a light-transmitting area 160 located on the side 170 of the electronic device. The light-emitting component 121 of the optical fingerprint module is used to emit light to the light-transmitting area 160, and the optical fingerprint chip 110 of the optical fingerprint module is used to receive light reflected by a finger located above the light-transmitting area 160 to perform fingerprint detection.

[0074] It should be noted that, see Fig. 9 As shown, the support member 140 of the optical fingerprint module can be bonded to the middle frame 10 of the electronic device through the adhesive layer 180, so there is no need to open a blind hole or a through hole in the middle frame, thereby maintaining the strength of the middle frame.

[0075] See also Fig.10 As shown, the optical deflector 150 in the optical fingerprint module includes an exit surface and a reflection surface, wherein the exit surface 151 of the optical deflector 150 is bonded to the optical fingerprint chip 110 through a transparent adhesive layer (not shown in the figure), and the reflection surface 152 of the optical deflector 150 is bonded to the middle frame of the electronic device through an adhesive layer 180. The adhesive layer 180 can be a double-sided adhesive.

[0076] When a finger touches the light-transmitting plate 130 on the side of the electronic device, the electronic device emits light to the light-transmitting area on the side of the electronic device through the light-emitting component 121 of the optical fingerprint module, so that the optical fingerprint chip 110 receives the light reflected by the finger above the light-transmitting area, thereby realizing fingerprint detection on the side of the electronic device. The light reflected by the finger does not need to pass through the screen of the electronic device, and its transmittance is high and will not damage the screen. At the same time, the optical fingerprint module is arranged inside the electronic device, and there is no need to open a blind hole or a through hole in the middle frame, thereby maintaining the strength of the middle frame and improving the battery capacity.

[0077] like Fig.11 As shown, the electronic device 200 includes the above-mentioned optical fingerprint module 100, and the optical fingerprint module 100 is used for fingerprint detection on the side of the electronic device. The electronic device 200 also includes a microprocessor 201 and a memory 202, wherein the microprocessor 201 may include one or more processing cores, such as a 4-core microprocessor, an 8-core microprocessor, etc. The microprocessor 201 can be implemented in at least one hardware form of digital signal processing (DSP), field programmable gate array (FPGA), and programmable logic array (PLA).

[0078] The microprocessor 201 may also include a main processor and a coprocessor. The main processor is a processor for processing data in an awake state, also known as a central processing unit (CPU), and the coprocessor is a low-power processor for processing data in a standby state.

[0079] In addition, the microprocessor 201 may be integrated with a graphics processor (Graphics Processing Unit, GPU), and the GPU is used to render and draw the content to be displayed on the display screen. In some embodiments, the microprocessor 201 may also include an artificial intelligence (Artificial Intelligence, AI) processor, which is used to process computing operations related to machine learning.

[0080] The memory 202 may include one or more computer-readable storage media, which may be non-transitory. The memory 202 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash storage devices.

[0081] In some embodiments, the electronic device 200 may further include a peripheral device interface 203 and at least one peripheral device. The microprocessor 201, the memory 202, and the peripheral device interface 203 may be connected through a bus or signal lines. Each peripheral device may be connected to the peripheral device interface 203 through a bus, signal lines, or a circuit board.

[0082] Specifically, the peripheral devices include, but are not limited to, a radio frequency circuit 204, an optical fingerprint module 100, sensors 205, and a power supply 206. The peripheral device interface 203 may be used to connect at least one peripheral device related to input / output (I / O) to the microprocessor 201 and the memory 202. In some embodiments, the microprocessor 201, the memory 202, and the peripheral device interface 203 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the microprocessor 201, the memory 202, and the peripheral device interface 203 may be implemented on a separate chip or circuit board, and the embodiments of the present application do not limit this.

[0083] The radio frequency circuit 204 is used to receive and transmit radio frequency (RF) signals, also known as electromagnetic signals. The radio frequency circuit 204 communicates with a communication network and other communication devices through electromagnetic signals. The radio frequency circuit 204 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 204 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, etc. The radio frequency circuit 204 may communicate with other devices through at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to, a metropolitan area network, generations of mobile communication networks (2G, 3G, 4G, and 5G), a wireless local area network, and / or a wireless fidelity (WiFi) network. In some embodiments, the radio frequency circuit 204 may further include a circuit related to near field communication (NFC).

[0084] The sensor 205 includes one or more sensors for providing various aspects of status assessment for the electronic device 200. Among them, the sensor 205 includes an acceleration sensor. For example, the sensor 205 can detect the open / closed state of the electronic device 200, and can also detect the position change of the electronic device 200, which is used for the presence or absence of contact with the electronic device 200, the orientation or acceleration / deceleration of the electronic device 200, and the temperature change of the electronic device 200. The sensor 205 can also include an optical sensor, such as a complementary metal oxide semiconductor (Complementary Metal Oxide Swmiconductor, CMOS) or a charge-coupled device (Charge-coupled Device, CCD) photosensitive imaging element, for use in imaging applications. In some embodiments, the sensor 205 can also include a pressure sensor, a proximity sensor, a gyroscope sensor, and a magnetic sensor.

[0085] Those skilled in the art will understand that Fig.11 The structure shown in the figure does not constitute a limitation on the electronic device 200, and may include more or less components than those shown in the figure, or combine some components, or adopt a different component arrangement.

[0086] It should be noted that the electronic device 200 involved in the embodiments of the present disclosure may include but is not limited to smart phones, tablet computers, mobile phones, video phones, e-book readers, desktop PCs, netbook computers, workstations, servers, personal digital assistants (PDAs), portable multimedia players (PMPs), mobile medical devices, cameras or wearable devices (for example, head-mounted devices (HMDs) such as electronic glasses), electronic clothing, smart watches, etc.

[0087] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical fingerprint module for fingerprint detection on the side of an electronic device. It is characterized in that The optical fingerprint module includes an optical fingerprint chip arranged inside the electronic device and a flexible circuit board connected to the optical fingerprint chip, wherein a light-emitting component is integrated on the flexible circuit board; The light emitting component is used to emit light to the light-transmitting area located on the side of the electronic device; The optical fingerprint module further includes a light-transmitting plate, and the light-transmitting plate is located in the light-transmitting area; The light emitting component is arranged on a side of the flexible circuit board facing the light-transmitting plate; The optical fingerprint chip is used to receive light reflected by a finger located above the light-transmitting area to perform fingerprint detection; The optical fingerprint module further includes an optical deflector, which is used to receive the light transmitted from the light-transmitting plate and deflect the light to the sensing area of ​​the optical fingerprint chip; The flexible circuit board is in a "7" shape and includes a first part and a second part. The optical deflection element includes a reflection surface and an output surface arranged at a certain angle. The output surface, the optical fingerprint chip, and the second part are stacked in sequence. The first part is parallel to the light-transmitting plate.

2. The optical fingerprint module according to claim 1, It is characterized in that The optical fingerprint module further includes a touch component, which is integrated on the flexible circuit board and is electrically connected to the light-emitting component and the optical fingerprint chip respectively; The touch component is used to respond to the touch operation of the finger located above the light-transmitting area, generate a trigger signal and send it to the light-emitting component and the optical fingerprint chip.

3. The optical fingerprint module according to claim 1, It is characterized in that The light-transmitting plate is directly opposite to the sensing area of ​​the optical fingerprint chip.

4. The optical fingerprint module according to claim 1, It is characterized in that The optical deflecting element is a prism.

5. The optical fingerprint module according to any one of claims 1 to 4, It is characterized in that The optical fingerprint module also includes a support member, which is bonded and connected to the flexible circuit board.

6. The optical fingerprint module according to claim 1, It is characterized in that The optical fingerprint chip is bonded and connected to the light-transmitting plate.

7. An electronic device, It is characterized in that The electronic device comprises the optical fingerprint module as described in any one of claims 1-6 and a light-transmitting area located on the side of the electronic device; the light-emitting component of the optical fingerprint module is used to emit light to the light-transmitting area.

8. The electronic device according to claim 7, It is characterized in that The optical fingerprint module also includes a support member, and the support member is bonded to the middle frame of the electronic device through an adhesive layer.

9. The electronic device according to claim 7, It is characterized in that The optical fingerprint module also includes an optical deflector, an exit surface of the optical deflector is bonded to the optical fingerprint chip via a transparent adhesive layer, and a reflective surface of the optical deflector is bonded to the middle frame of the electronic device via an adhesive layer.

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