WO2023019521A1

WO2023019521A1 - Fingerprint recognition device and laptop computer

Info

Publication number: WO2023019521A1
Application number: PCT/CN2021/113589
Authority: WO
Inventors: 陈作鹏; 郭超; 程雷刚
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2023-02-23

Abstract

Embodiments of the present application provide a fingerprint recognition device and a laptop computer, the fingerprint recognition device being used for being provided below a glass plate of an area in which a pressing plate and/or a touch strip of the laptop computer are located, and the fingerprint recognition device comprising: a light source, which is used for emitting a light signal to the finger of a user pressing a first area; a fingerprint chip, which is provided below the first area; a circuit board, which is provided on a lower surface of the fingerprint chip and electrically connected to the fingerprint chip; and support pieces, which are provided around the fingerprint chip and are connected to an upper surface of the circuit board, the support pieces being used for mounting the fingerprint chip and the circuit board below the glass plate. The overall thickness of the circuit board, the fingerprint chip and the support pieces is not greater than 0.4 mm, an optical signal emitted by the light source penetrates the glass plate to irradiate to the finger of the user, and the fingerprint chip is used for receiving a fingerprint optical signal which is returned from the finger of the user and which then penetrates the glass plate so as to carry out fingerprint identification. According to the technical solution of the embodiments of the present application, the safety performance of a laptop computer may be improved.

Description

Fingerprint recognition device and laptop

technical field

The present application relates to the technical field of optical fingerprints, and more specifically, to a fingerprint identification device and a notebook computer.

Background technique

With the development of the consumer electronics industry, especially the rapid development of mobile devices, how to improve the user experience of mobile devices and the overall performance of mobile devices is an issue of continuous concern in the industry.

At present, laptop computer (laptop computer), as a mainstream mobile device, is widely used in people's daily life and work. The related design of its security performance is very important, and will directly affect the user's user experience and Future development of notebook computer products.

Therefore, how to improve the safety performance of the notebook computer is a technical problem to be solved.

Contents of the invention

The embodiment of the present application provides a fingerprint identification device and a notebook computer, which can improve the security performance of the notebook computer.

In a first aspect, a fingerprint identification device is provided, which is used to be arranged under the glass plate in the area where the pressing plate and/or touch bar of the notebook computer are located. The oblique bottom is used to emit light signals to the user's finger pressed on the first area; the fingerprint chip is arranged below the first area; the circuit board is arranged on the lower surface of the fingerprint chip and is electrically connected to the fingerprint chip; the support member, Set around the fingerprint chip and connected to the upper surface of the circuit board, the support is used to install the fingerprint chip and the circuit board under the glass plate; wherein, the overall thickness of the circuit board, fingerprint chip and support is not greater than 0.4mm The optical signal emitted by the light source is irradiated to the user's finger through the glass plate, and the fingerprint chip is used to receive the fingerprint optical signal returned from the user's finger and pass through the glass plate for fingerprint identification.

The embodiment of the present application provides a fingerprint identification device suitable for being installed under the glass plate in the area where the pressing plate and/or touch bar of the notebook computer are located, which uses the principle of optical fingerprint imaging to perform fingerprint imaging for fingerprint identification, which can improve Laptop security features. Further, the fingerprint identification device of the embodiment of the present application includes a separate light source, which facilitates the control of the light source for fingerprint imaging, and the support is used to install the fingerprint chip and the circuit board under the glass plate, so that the relative positions of the fingerprint chip and the glass plate can be fixed Therefore, the optical path from the fingerprint chip to the user's finger above the glass plate is relatively fixed, which is conducive to improving the optical fingerprint imaging effect. Furthermore, the overall thickness of the circuit board, the fingerprint chip and the supporting member is not greater than 0.4 mm, that is, the overall thickness of the three is very small, and can be flexibly installed in the notebook computer without occupying too much space in the thickness of the notebook computer. It is beneficial to the installation and arrangement of other components in the notebook computer, and is also conducive to the thinner and lighter development of the notebook computer as a whole.

In some possible embodiments, the glass sheet has a thickness of 0.7 mm to 2.5 mm.

In this embodiment, the thickness of the glass plate can reach 0.7mm to 2.5mm, so as to enhance the mechanical strength of the glass plate and improve the compression and shock resistance of the notebook computer where the fingerprint identification device is located.

In some possible implementations, the light source is arranged on the lower surface of the glass plate, and the light emitting surface of the light source faces the glass plate; the support member is connected to the glass plate and the circuit board, so as to install the fingerprint chip and the circuit board under the glass plate.

In some possible implementation manners, the fingerprint identification device further includes: a light guide element disposed between the first area of the glass plate and the fingerprint chip, the light source is disposed on the side of the light guide element, and the light emitting surface of the light source faces the light guide element The supporting member is connected to the light guide element and the circuit board, so as to install the fingerprint chip and the circuit board under the glass plate.

In some possible implementation manners, the fingerprint identification device further includes: a light guide element, arranged between the glass plate and the fingerprint chip, a window is arranged in the light guide element, and the window is correspondingly arranged under the first area of the glass plate, and the light source is set On the side of the light guide element, and the light-emitting surface of the light source faces the light guide element; the support is connected to the glass plate and the circuit board, so that the fingerprint chip and the circuit board are installed under the glass plate, and the circuit board, the fingerprint chip and the support At least partially within the window of the light guiding element.

In some possible implementations, the thickness of the fingerprint chip is within 0.15 mm, and/or the thickness of the circuit board is within 0.2 mm.

In some possible implementations, the thickness of the fingerprint chip is within 0.08 mm, and/or the thickness of the circuit board is within 0.15 mm.

In some possible implementations, the thickness of the supporting member is greater than that of the fingerprint chip, so that there is an air gap above the fingerprint chip, and the thickness of the air gap is within 0.1 mm.

In some possible embodiments, the thickness of the air gap is within 0.05mm.

In some possible implementations, the thickness of the light guide element is no greater than 0.4mm.

In some possible implementations, the light guide element is a light guide plate, and the light guide plate is used to convert the light signal of the light source into a uniform light signal emitted toward the first region of the glass plate.

In some possible implementations, the light guide element is a glass sheet, and the glass sheet and the glass plate are used to convert at least part of the light signal of the light source into a totally reflected light signal propagating in the glass sheet and the glass plate.

In some possible implementation manners, the fingerprint recognition device further includes: an optical component arranged above the fingerprint chip; the optical component includes: a microlens array; at least one aperture layer arranged below the microlens array, in at least one aperture layer A plurality of light-through small holes are formed in each diaphragm layer; the microlens array is used to converge the target direction fingerprint light signal in the fingerprint light signal to a plurality of light-through small holes in at least one diaphragm layer, and the target direction fingerprint The optical signal is transmitted to the fingerprint chip through a plurality of light-through holes for fingerprint identification.

In some possible implementations, the support member is black foam, and/or, the upper surface of the circuit board is coated with a black light-shielding layer.

In some possible implementation manners, the first area of the glass plate is provided with a first light-transmitting layer, and the second area around the first area is provided with a second light-transmitting layer, wherein the first light-transmitting layer is used to transmit infrared rays. light and block visible light, the second light-transmitting layer is used to transmit visible light; the light source includes a first light source and a second light source, the first light source is used to emit visible light signals, and the visible light signals are received by the user through the second light-transmitting layer to prompt The user's finger presses the first area, and the second light source is used to emit an infrared light signal to the user's finger pressed on the first area; the fingerprint chip is used to receive the infrared light signal to pass through the first light-transmitting layer and return after passing through the user's finger. Fingerprint infrared light signal for fingerprint recognition.

In some possible implementations, the first light source is also used to emit visible light signals to the user's finger pressed on the first area, and the fingerprint chip is also used to receive visible light signals that pass through the second light-transmitting layer and return after passing through the user's finger. The visible light signal of the fingerprint, the visible light signal of the fingerprint and/or the infrared light signal of the fingerprint are used to detect the biometric information of the user.

In some possible implementations, the fingerprint chip is used to receive fingerprint infrared light signals to form a frame of fingerprint image, and a frame of fingerprint image is used to judge whether the user's finger press is valid; The fingerprint infrared light signal is used to form a multi-frame fingerprint image, and the multi-frame fingerprint image is used for fingerprint identification.

In some possible implementations, the fingerprint chip is used to receive fingerprint visible light signals and/or fingerprint infrared light signals to obtain reference biometric information, and the reference biometric information is used to determine whether the user's finger press is valid; when the user's finger press is valid, The fingerprint chip is used to continuously receive fingerprint visible light signals and/or fingerprint infrared light signals to obtain target biological feature information.

In some possible implementations, the first light source includes color light sources of at least two colors, and the color light sources of at least two colors are used to emit light alternately in sequence, and a light change area is formed through the second light-transmitting layer to prompt the user Fingers press against the first area.

In some possible implementations, the color light sources of at least two colors include a red light source and a green light source.

In some possible implementation manners, the fingerprint identification device further includes: a rectangular light guide element, among at least two color light sources, the color light sources of the same color are located on the same side of the rectangular light guide element, and the color light sources of different colors on different sides of the rectangular light guide element.

In some possible implementations, the fingerprint identification device further includes: a windmill-shaped light guide element, the windmill-shaped light guide element includes a central part and a plurality of windmill rotor parts, the central part is circular or oval, and the plurality of windmill rotors The part is arranged around the central part and connected with the central part; the first light source and the second light source are respectively arranged on the sides of a plurality of windmill rotor parts, and the plurality of windmill rotor parts are used to guide the optical signals of the first light source and the second light source into the central part.

In some possible implementation manners, the projection of the second light-transmitting layer on the plane where the light-guiding element is located is located in the central portion of the light-guiding element.

In some possible implementations, the first light source includes color light sources of at least two colors, and the color light sources of at least two colors are used to emit light alternately in sequence, and among the at least two color light sources, the color light sources of the same color The light sources are arranged at intervals, and the color light sources of different colors are arranged adjacently.

In some possible implementation manners, the first transparent layer is disposed over the fingerprint chip and the supporting member.

In some possible implementation manners, the fingerprint identification device further includes: a light guide element, and a projection of the second light-transmitting layer on a plane where the light guide element is located is located in the light guide element.

In some possible implementation manners, the first transparent layer is circular, and the second transparent layer is circular; or, the first transparent layer is elliptical, and the second transparent layer is elliptical.

In some possible implementations, the first light-transmitting layer is an infrared-transmitting ink layer, and the second light-transmitting layer is a visible light-transmitting ink layer.

In some possible implementation manners, the first light-transmitting layer is provided with a plurality of small holes to reduce the scattering of the fingerprint infrared light signal by the haze of the first light-transmitting layer.

In some possible implementation manners, the third area outside the second area of the glass plate is provided with an opaque layer, and the opaque layer is used to prevent light signals from inside the notebook computer from being received by the user.

In a second aspect, a notebook computer is provided, including: a display screen and a host; wherein, the host includes a glass plate and a fingerprint recognition device arranged under the glass plate, and the fingerprint recognition device is as in any one of the first aspect or the first aspect The fingerprint identification device in the embodiment.

In a third aspect, a fingerprint identification device is provided, which is used to be arranged under the glass plate in the area where the pressing plate and/or touch bar of the notebook computer are located, the first area of the glass plate is used to receive the pressing of the user's finger, and the first The area is provided with a first light-transmitting layer, and the second area around the first area is provided with a second light-transmitting layer, wherein the first light-transmitting layer is used to transmit infrared light and block visible light, and the second light-transmitting layer is used to transmit Through visible light, the fingerprint identification device includes: a first light source, arranged obliquely below the first area, for emitting a visible light signal, and the visible light signal is received by the user through the second light-transmitting layer to prompt the user to press the first area with his finger ; The second light source is arranged obliquely below the first area, and is used to emit infrared light signals to the user's finger pressed on the first area; the fingerprint chip is arranged below the first area, and is used to receive infrared light signals through the The first light-transmitting layer passes through the user's finger and returns the fingerprint infrared light signal for fingerprint identification.

Based on the above technical solution, the embodiment of the present application provides a fingerprint identification device suitable for being installed under the glass plate in the area where the pressing plate and/or touch bar of the notebook computer are located, which utilizes the principle of optical fingerprint imaging to perform fingerprint imaging for Fingerprint recognition, which can improve the security performance of the notebook computer. Further, in the glass plate, a first light-transmitting layer is provided corresponding to the first area of the fingerprint chip, and the first light-transmitting layer can block visible light, thereby preventing the user from observing the fingerprint identification device below through the glass plate, and the At the same time, the first light-transmitting layer can pass infrared light, so that the infrared light can reach the user's finger as an optical signal for fingerprint identification. Therefore, through the technical solution of the embodiment of the application, while taking into account the safety performance of the notebook computer, it solves the problem of notebook computers. The appearance problem of the fingerprint identification device under the glass plate in the computer improves the user experience of the notebook computer. In addition, in the embodiment of the present application, a second light-transmitting layer is provided on the periphery of the first area where the first light-transmitting layer is located, and the second light-transmitting layer is used to transmit visible light to remind the user of the location of the first area. The position guides the user’s finger to press on the first area. Therefore, the fingerprint chip corresponding to the lower part of the first area can receive the fingerprint optical signal with strong light intensity and high quality. While taking into account the performance of fingerprint identification, the user can quickly find The fingerprint recognition area of the notebook computer further enhances the user experience of using the notebook computer.

In some possible implementation manners, the first light source is also used to emit visible light signals to the user's finger pressed on the first area; The visible light signal of the fingerprint, the visible light signal of the fingerprint and/or the infrared light signal of the fingerprint are used to detect the biometric information of the user.

In some possible implementations, the first light source includes color light sources of at least two colors, the color light sources of at least two colors are used to emit light alternately in sequence, and form a flowing light signal through the second transparent layer to prompt the user Fingers press against the first area.

In some possible implementation manners, the first transparent layer is disposed on the fingerprint chip.

In some possible implementation manners, the first transparent layer is circular, and the second transparent layer is circular, or, the first transparent layer is elliptical, and the second transparent layer is elliptical.

In some possible implementation manners, the first light source and the second light source are disposed on the lower surface of the glass plate, and the light-emitting surfaces of the first light source and the second light source face the glass plate.

In some possible implementation manners, the fingerprint identification device further includes: a light guide element disposed between the glass plate and the fingerprint chip, the first light source and the second light source are disposed on the side of the light guide element, and the first light source and the second light source The light emitting surface of the light source faces the light guide element.

In some possible implementation manners, the projection of the second light-transmitting layer on the plane where the light-guiding element is located is located in the light-guiding element.

In some possible implementation manners, the light guide element is a light guide plate, and the light guide plate is used to convert the light signal of the light source into a uniform light signal emitted toward the glass plate.

In some possible implementations, the light guide element is a rectangular light guide element, the first light source includes color light sources of at least two colors, and the color light sources of at least two colors are used to emit light alternately in sequence; and in at least two colors Among the color light sources, the color light sources of the same color are located on the same side of the rectangular light guide element, and the color light sources of different colors are located on different sides of the rectangular light guide element.

In some possible implementations, the light guide element is a windmill-shaped light guide element, and the windmill-shaped light guide element includes a central part and a plurality of windmill rotor parts, the central part is circular or oval, and the plurality of windmill rotor parts surround Set in the central part and connected with the central part; the first light source and the second light source are respectively arranged on the sides of a plurality of windmill rotor parts, and the plurality of windmill rotor parts are used to guide the optical signals of the first light source and the second light source into the central part .

In some possible implementations, the first light source includes color light sources of at least two colors, and the color light sources of at least two colors are used to emit light alternately in sequence; and among the at least two color light sources, the same color light sources The color light sources are set at intervals, and the color light sources of different colors are set adjacently.

In some possible implementations, the fingerprint identification device further includes: a circuit board disposed on the lower surface of the fingerprint chip and electrically connected to the fingerprint chip; a support member disposed around the fingerprint chip and connected to the upper surface of the circuit board, The supporting member is used for installing the fingerprint chip and the circuit board under the glass plate.

In some possible implementations, the supporting member is connected to the glass plate and the circuit board, so as to install the fingerprint chip and the circuit board under the glass plate.

In some possible implementations, the fingerprint recognition device further includes: a light guide element disposed between the glass plate and the fingerprint chip, and the support member is connected to the light guide element and the circuit board to install the fingerprint chip and the circuit board on the glass plate below.

In some possible implementation manners, the fingerprint recognition device further includes: a light guide element disposed between the glass plate and the fingerprint chip, a window is disposed in the light guide element, and the window is correspondingly disposed under the first area of the glass plate; a support member It is connected to the glass plate and the circuit board, so that the fingerprint chip and the circuit board are installed under the glass plate, and at least part of the circuit board, the fingerprint chip and the supporting member are located in the window of the light guide element.

In some possible implementations, the overall thickness of the circuit board, the fingerprint chip and the supporting member is not greater than 0.4mm.

In some possible embodiments, the thickness of the air gap is within 0.05mm.

In a fourth aspect, there is provided a notebook computer, including: a display screen and a host, the host includes a glass plate and a fingerprint identification device disposed under the glass plate, wherein the first area of the glass plate is used to receive the pressing of the user's finger, and The first area is provided with a first light-transmitting layer, and the second area around the first area is provided with a second light-transmitting layer. The first light-transmitting layer is used to transmit infrared light and block visible light, and the second light-transmitting layer is used to transmit through visible light; the fingerprint identification device is the fingerprint identification device in the third aspect or any possible implementation manner of the third aspect.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a notebook computer applicable to the present application.

Fig. 2 is a schematic structural diagram of a fingerprint identification device provided according to an embodiment of the present application.

FIG. 3 is a schematic top view of the fingerprint identification device of the embodiment shown in FIG. 2 .

Fig. 4 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

FIG. 5 is a schematic top view of the fingerprint recognition device of the embodiment shown in FIG. 4 .

Fig. 6 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

FIG. 8 is a schematic top view of the fingerprint recognition device of the embodiment shown in FIG. 7 .

FIG. 9 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

Fig. 11 is a schematic top view of a first light-transmitting layer, a second light-transmitting layer and an opaque layer according to an embodiment of the present application.

Fig. 12 is another schematic top view of the first light-transmitting layer, the second light-transmitting layer and the light-impermeable layer according to the embodiment of the present application.

Fig. 13 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

FIG. 14 is a schematic top view of the fingerprint recognition device of the embodiment shown in FIG. 13 .

Fig. 15 is a schematic structural diagram of another fingerprint identification device provided according to an embodiment of the present application.

FIG. 16 is a schematic top view of the fingerprint recognition device of the embodiment shown in FIG. 15 .

FIG. 17 is another schematic top view of the fingerprint identification device of the embodiment shown in FIG. 15 .

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various electronic products, especially to electronic products related to computers and their peripheral types, such as notebook computers, tablet computers, handheld game devices, and the like.

It should be noted that, for ease of description, in the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, detailed descriptions of the same components are omitted. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are for illustrative purposes only, and should not constitute any limitation to the application .

FIG. 1 shows a schematic perspective view of a notebook computer to which the present application is applicable.

As shown in FIG. 1 , the notebook computer 100 includes: a host 110 , a display screen 120 and a hinge mechanism 130 , wherein the host 110 and the display screen 120 are connected to each other through the hinge mechanism 130 .

On the front (user operation surface) of the host 110 of the notebook computer 100, in addition to being provided with a keyboard 112, a switching power supply 113, a touch panel 114 and other function keys, as shown in Figure 1, the front of the host 110 can also be provided with The pressing plate 111 pressed by the finger, the area of the pressing plate 111 can be equivalent to the area of the finger. When the user's finger is pressed on the pressing plate 111, the fingerprint identification device arranged under the pressing plate 111 can be used for fingerprint identification of the finger. If the fingerprint identification is successful , the host 110 can execute other commands input by the user, so as to realize the user's manipulation of the notebook computer 100 . The security performance of the notebook computer 100 can be improved by arranging the pressing plate 111 and the corresponding fingerprint identification device in the host computer 110 .

Optionally, the pressing board 111 can be arranged at any position on the front of the host 110 , for example, for the convenience of the user to operate, the pressing board 111 can be arranged at one side of the touch panel 114 . Alternatively, in other design manners, the pressing plate 111 may also be disposed on the side of the host 110 , which is not specifically limited in this embodiment of the present application.

In addition, as shown in FIG. 1, in addition to the pressing board 111, a touch bar 115 is also provided on the front of the host 110. Optionally, the touch bar 115 can be arranged above the keyboard 112, which can be used to replace the keyboard 112. Part of the keys in 112 (eg, function keys from F1 to F12, etc.) and some of the function keys of the host 110 (eg, volume control keys, screen brightness control keys, etc.). Optionally, the touch bar 115 can also be used to receive finger pressure, and a fingerprint identification device for fingerprint identification can also be arranged under the touch bar 115 .

Based on the pressing board 111 and the touch bar 115, both of them can be used to receive the pressing of the user's fingers. In some notebook computer products, the pressing board can be called a tray pad, and the touch bar can be called a touch bar.

In order to improve the overall aesthetics of the notebook computer, the front of the host 110 can be designed with a whole piece of glass except for the keyboard 112, the touch panel 114 and the function keys. A localized area of the glass plate receives a user's pressure. Or, in some other embodiments, only the glass plate is provided in the area of the pressing board 111 and/or the touch bar 115 for receiving the user's pressing, while other areas can be made of other materials.

It can be understood that the above FIG. 1 is only for illustration and not limitation, showing a schematic diagram of a notebook computer 100. In addition to the notebook computer 100 shown above, the technical solutions proposed in this application can also be applied to related technologies Notebook computers in other forms and structures are not specifically limited in this application.

In order to improve the security performance of the notebook computer, FIG. 2 shows a schematic structural diagram of a fingerprint identification device 200 applicable to the notebook computer provided by the embodiment of the present application, for example, applicable to the aforementioned notebook computer 100 .

As shown in FIG. 2, the fingerprint identification device 200 is used to be arranged under the glass plate 201 in the area where the pressing plate and/or touch bar of the notebook computer are located. The fingerprint identification device 200 includes:

The light source 210 is arranged obliquely below the first area 202 of the glass plate 201, and is used to emit light signals to the user's finger pressed on the first area 202;

The fingerprint chip 220 is arranged under the first area 202;

The circuit board 230 is arranged on the lower surface of the fingerprint chip 220 and electrically connected with the fingerprint chip 220;

The supporting member 240 is arranged around the fingerprint chip 220 and connected to the upper surface of the circuit board 230. The supporting member 240 is used to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201;

Wherein, the overall thickness of the circuit board 230, the fingerprint chip 220 and the support member 240 is not greater than 0.4mm, so as to reduce the thickness of their installation in the notebook computer;

The optical signal emitted by the light source 210 is irradiated to the user's finger through the glass plate 201 , and the fingerprint chip 220 is used for receiving the fingerprint optical signal returned from the user's finger and passing through the glass plate 201 for fingerprint identification.

Based on the above technical solution, the embodiment of the present application provides a fingerprint identification device suitable for being installed under the glass plate in the area where the pressing plate and/or touch bar of the notebook computer are located, which utilizes the principle of optical fingerprint imaging to perform fingerprint imaging for Fingerprint recognition, which can improve the security performance of the notebook computer.

Further, the fingerprint identification device of the embodiment of the present application includes a separate light source, which facilitates the control of the light source for fingerprint imaging, and the support is used to install the fingerprint chip and the circuit board under the glass plate, so that the relative positions of the fingerprint chip and the glass plate can be fixed Therefore, the optical path from the fingerprint chip to the user's finger above the glass plate is relatively fixed, which is conducive to improving the optical fingerprint imaging effect. Furthermore, the overall thickness of the circuit board, the fingerprint chip and the supporting member is not greater than 0.4 mm, that is, the overall thickness of the three is very small, and can be flexibly installed in the notebook computer without occupying too much space in the thickness of the notebook computer. It is beneficial to the installation and arrangement of other components in the notebook computer, and is also conducive to the thinner and lighter development of the notebook computer as a whole.

In the existing notebook computer, in order to ensure the mechanical performance of the notebook computer, the glass plate on the front of the host computer of the notebook computer needs to have a certain thickness, so as to ensure that the notebook computer has better compression resistance and shock resistance.

In this case, for the traditional capacitive fingerprint identification device, if it is arranged under the glass plate in the area where the pressing plate and/or touch bar are located, the thicker glass plate will affect the capacitive fingerprint detection signal. Generally speaking, If the thickness of the glass plate is more than 0.1 mm, the weak capacitive fingerprint detection signal is not suitable for fingerprint identification. Therefore, the capacitive fingerprint identification device is not suitable for being arranged under the glass plate in the notebook computer.

For ultrasonic fingerprint identification devices, ultrasonic waves can penetrate glass plates with a thickness of about 0.7mm at most. The glass plate is subjected to additional hollowing and thinning treatment, and the hollowing and thinning treatment will reduce the hardness of the glass plate, resulting in a decrease in the mechanical performance of the notebook computer, further resulting in deterioration of the compression resistance and shock resistance of the notebook computer. In addition, the additional hollowing and thinning process also needs to bring additional processing and manufacturing costs, resulting in an increase in the manufacturing cost of the notebook computer. Furthermore, the thickness of most ultrasonic fingerprint recognition devices currently on the market is more than 1mm, and a thicker ultrasonic fingerprint recognition device will also limit the overall thickness reduction of the notebook computer and affect the development of thinner and lighter notebook computers.

However, in the technical solution of the embodiment of the present application, the fingerprint identification device 200 is used to receive the fingerprint optical signal through the glass plate 201 for fingerprint identification, which will not affect the thickness design of the glass plate in the notebook computer. In other words, in the embodiment of the application, The thickness of the glass plate 201 can reach more than 0.7mm, so as to enhance the mechanical strength of the glass plate, improve the compressive capacity and shock resistance.

Optionally, in the embodiment of the present application, the glass plate 201 may be the glass plate on the front of the host computer 110 of the notebook computer 100 shown in FIG. 1 .

Optionally, the thickness of the glass plate 201 can be between 0.7 mm and 2.5 mm, so as to take into account the thickness and mechanical strength of the glass plate 201 and improve the overall performance of the notebook computer.

Optionally, the thickness of the light source 210 can be controlled below 0.4mm, and the light source 210 can be placed close to the bottom of the glass plate 201, and placed obliquely below the first area 202 of the glass plate 201 for receiving finger pressure. On the one hand , this setting method can reduce the thickness space occupied by the light source 210 below the glass plate 201, and will not affect the setting of the fingerprint chip below the first area 202, on the other hand, this setting method can also improve the light utilization rate of the light source 210, The optical signal emitted by the light source 210 can be refracted and reflected by the glass plate 201 , reach the first area 202 , and be reflected and/or scattered by the finger to form a fingerprint optical signal carrying fingerprint information, which is received by the fingerprint chip 220 .

As an example, the light source 210 includes, but is not limited to, a point light source, such as a light-emitting diode (light-emitting diode, LED), an organic light-emitting diode (organic light-emitting diode, OLED), etc., wherein the LED has the advantages of small size and low cost. Moreover, it has the advantages of convenient installation and the like, so it is suitable for being installed in a notebook computer as a light source of a fingerprint identification device. Optionally, the LED may be a front-emitting LED or a side-emitting LED. In a specific implementation, an appropriate LED may be selected as the light source 210 according to installation environment and other factors. Alternatively, in other implementation manners, the light source 210 may also be a vertical cavity surface emitting laser (vertical cavity surface emitting laser, VCSEL) or other types of lasers.

Optionally, the light source 210 may be a visible light source or an invisible light source. As an example, the invisible light source may be an infrared light source. As an example, the light emitting wavelength of the light source 210 may be between 500 nm and 1000 nm, and the specific light emitting wavelength band of the light source 210 is not limited in the embodiment of the present application.

In some embodiments, the number of light sources 210 is multiple, and among the multiple light sources 210, some of the light sources are visible light sources, and the other part of the light sources are infrared light sources, and the visible light sources may include light sources of multiple colors, for example , including red light source and green light source. In this embodiment, multiple light sources 210 can provide multiple optical signals of different wavelength bands and different colors. The fingerprint optical signal formed by the optical signals of different wavelength bands and different colors after passing through the finger can not only carry the fingerprint information of the finger, but also carry Finger biometric information, such as: blood oxygen, blood pressure, heart rate and other information. Therefore, the fingerprint optical signal received by the fingerprint chip 220 can not only be used for fingerprint identification, but also be used for the detection of the user's biological feature information, and the detected biological feature information can not only be provided to the user to improve the user's experience of using the notebook computer. , can also be used to judge whether the finger is a real finger, prevent fake fingers from attacking the notebook computer, and further improve the safety performance of the notebook computer.

Optionally, in this embodiment of the application, the fingerprint chip 220 may be a fingerprint sensor chip for optical imaging, which includes a pixel array formed by a plurality of photosensitive pixels and a functional circuit for connecting the pixel array, each photosensitive unit The sensor may include a photodiode (photodiode, PD) and other photosensitive elements to receive the fingerprint optical signal returned by the finger for fingerprint identification. The circuit board 230 is electrically connected to the fingerprint chip 220, which can be used to receive the fingerprint electrical signal generated by the fingerprint chip 220 after receiving the fingerprint optical signal, and transmit the fingerprint electrical signal to the processing unit for fingerprint identification. In addition, the circuit board 230 also It can be used to transmit the control signal of the fingerprint chip 220 to control the operation of the fingerprint chip 220.

Optionally, the fingerprint chip 220 can be packaged above the circuit board 230 by a chip on board (COB) process, and the fingerprint chip 220 can be electrically connected to the circuit board 230 by wire bonding (WB), This packaging method is mature in technology, and the thickness of the fingerprint chip 220 and the circuit board 230 after packaging is relatively small.

Optionally, the circuit board 230 can be an ultra-thin printed circuit board (printed circuit board, PCB) or a flexible printed circuit board (flexible printed circuit, FPC), wherein, the FPC can be provided with a reinforcing board correspondingly, for carrying out the FPC reinforcement. In the embodiment of the present application, the thickness of the circuit board 230 may be the thickness of the PCB or the overall thickness of the FPC and its reinforcing board.

In order to realize that the overall thickness of the circuit board, fingerprint chip and support is not greater than 0.4mm, the thickness of the circuit board and fingerprint chip is controlled within a small thickness range. As an example, the thickness of the fingerprint chip can be controlled at 0.15 mm by grinding and other processes. Within mm, preferably, the thickness of the fingerprint chip can be controlled within 0.08mm. As an example, the thickness of the circuit board can be controlled within 0.2 mm, preferably, the thickness of the circuit board can be controlled within 0.15 mm.

As an optional implementation manner, as shown in FIG. 2 , the support member 240 may be connected to the glass plate 201 and the circuit board 230 , so as to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201 . The light source 210 is disposed on the lower surface of the glass plate 201 , and the light emitting surface of the light source 210 faces the glass plate 201 .

In this embodiment, the thickness of the support member 240 can be greater than the thickness of the fingerprint chip 220, and there is a certain gap between the fingerprint chip 220 and the glass plate 201 to meet the requirements of optical imaging and prevent the fingerprint chip 220 and the glass plate 201 from directly contacting each other. The contact causes the two to collide with each other, which affects the reliability of the fingerprint chip 220 .

As an example, the thickness of the support member 240 can be controlled within 0.18mm, the thickness of the fingerprint chip can be controlled within 0.08mm, then the gap between the fingerprint chip 220 and the glass plate 201 is not greater than 0.1mm, and the gap can be an air gap. Preferably, the thickness of the support member 240 can be controlled within 0.13 mm, and the thickness of the fingerprint chip can be controlled within 0.08 mm, so the gap between the fingerprint chip 220 and the glass plate 201 is not greater than 0.05 mm. In this embodiment, The gap between the fingerprint chip 220 and the glass plate 201 is small, which is beneficial to improve the fingerprint imaging performance and reduce the installation thickness of the fingerprint chip 220 under the glass plate 201 . And in this embodiment, if the thickness of the circuit board 230 is controlled within 0.15 mm, then the overall thickness of the circuit board, fingerprint chip and supporting member is not more than 0.3 mm, about 0.28 mm.

FIG. 3 shows a schematic top view of the fingerprint identification device of the embodiment shown in FIG. 2 .

As shown in FIG. 3 , the supporting member 240 is in a frame structure and is arranged around the fingerprint chip 220. Optionally, the material of the supporting member 240 can be a black light-absorbing substance, such as foam, etc. The supporting member 240 can be used in addition to In addition to installing the fingerprint chip 220 and the circuit board 230, it can also absorb and block ambient light and stray light from entering the fingerprint chip 220, preventing ambient light and stray light from interfering with fingerprint recognition. In addition to the material of the support 240 being a black light-absorbing substance, optionally, the surface of the circuit board 230, especially the upper surface of the circuit board, may also be coated with a black light-shielding layer, such as black ink, etc., for absorbing and blocking ambient light And stray light enters the fingerprint chip 220.

Optionally, as shown in FIG. 3 , in the embodiment of the present application, the light source 210 may be arranged around the frame-shaped support 240 to provide light signals for the user's finger at the corresponding first area 202 above the fingerprint chip 220 , The frame support 240 can prevent the light signal of the light source 210 from directly entering the fingerprint chip 220 and affecting the fingerprint identification effect. As an example and not a limitation, FIG. 3 shows that a plurality of point light sources 210 are arranged around a frame-shaped support 240, and the plurality of point light sources 210 can provide light signals around the user's finger at the first area. The number and arrangement of the point light sources The method is not specifically limited in this embodiment of the present application.

In the above embodiment, the support member 240 is connected to the glass plate 201 and the circuit board 230 to realize the installation of the fingerprint chip 220 and the circuit board 230 under the glass plate 201. After the light signal of the light source 210 enters the glass plate 201, it passes through the glass plate 201 The refraction and reflection of the finger reaches the user's finger at the first area 202 , and after being reflected and scattered by the user's finger, a fingerprint optical signal is formed. The fingerprint optical signal passes through the glass plate 201 and is received by the fingerprint chip 220 .

In this embodiment, the overall thickness of the fingerprint recognition device 200 below the glass plate 201 is less than 0.4mm. The overall thickness under the board 201 is very small, which can realize the ultra-thin fingerprint identification solution in the notebook computer, but in this embodiment, the light source 210 has a certain distance from the first area 202 pressed by the finger, so the light signal reaching the finger The intensity is weak, and the intensity of the light signal reaching different positions of the finger also has the problem of unevenness, which will cause poor fingerprint imaging effect.

Based on this, in order to improve the fingerprint imaging effect, FIG. 4 shows a schematic structural diagram of another fingerprint recognition device provided by an embodiment of the present application.

As shown in FIG. 4, in the embodiment of the present application, the fingerprint identification device 200 further includes: a light guide plate (light guide plate) 250, which is arranged between the first area 202 of the glass plate 201 and the fingerprint chip 220, and the light source 210 is arranged on the The side of the light guide plate 250 , and the light-emitting surface of the light source 210 faces the side of the light guide plate 250 , so that the light guide plate 250 can receive the light signal emitted by the light source 210 to a maximum extent.

Optionally, as shown in FIG. 4 , the inner bottom surface of the light guide plate 250 is provided with a plurality of dots 251. The dots 251 use the principle of light scattering. When reaching the dot 251 , the light signal in one direction is scattered into light signals in multiple directions. When the angle of the light signal incident on the dot 251 is greater than a critical value, the light signal diffuses out from the upper surface of the light guide plate 250 . When the angle of the light signal incident on the dot 251 is smaller than the critical value, the light signal continues to scatter inside the light guide plate 250 until it encounters the next dot 251, and the scattering process is repeated. Generally speaking, after the light signal emitted by the light source 210 enters the light guide plate 250 , it is scattered by a plurality of dots 251 to form a diffuse reflection effect, and is uniformly emitted from the upper surface of the light guide plate 250 . In addition, the upper surface of the light guide plate 250 has a microstructure, such as a V-cut structure, which can improve the angle of light signals emitted from the light guide plate 250, so that more light signals are emitted toward the finger.

Therefore, based on the above technical solution, the non-uniform light signal emitted by the light source located around the first area can be converted into a uniform light signal towards the first area through the light guide plate, so that the finger located at the first area can receive a uniform light signal. The light signal of the fingerprint, and then the fingerprint light signal reflected and scattered by the finger also has a uniform light intensity, which can bring a better fingerprint imaging effect.

Optionally, as shown in FIG. 4, in the embodiment of the present application, the light guide plate 250 can be directly arranged on the lower surface of the glass plate 201 through the adhesive layer 252, and the thickness of the light guide plate 250 can be controlled within 0.4mm, for example, The thickness of the light guide plate 240 is about 0.33 mm, so that the thickness space occupied by the light guide plate 250 under the glass plate 201 is small, and it will not occupy too much thickness space on the basis of improving the fingerprint identification performance of the fingerprint identification device.

Further, as shown in FIG. 4 , the support member 240 can be connected to the light guide plate 250 and the circuit board 230, so as to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201, specifically, the fingerprint chip 220 and the circuit board 230 can be installed The circuit board 230 is installed under the light guide plate 250 . In this embodiment, the overall thickness of the circuit board 230, the fingerprint chip 220 and the supporting member 240 is still not greater than 0.4mm, and the relevant dimensions of the circuit board 230, the fingerprint chip 220 and the supporting member 240 can be found in the relevant description of the above embodiments . In addition, in this embodiment, there may be no more than 0.1mm (preferably 0.05mm) gap between the fingerprint chip 220 and the light guide plate 250 to meet the requirements of optical imaging and prevent the fingerprint chip 220 and the light guide plate 250 from directly contacting each other. The contact causes the two to collide with each other, which affects the reliability of the fingerprint chip 220 .

FIG. 5 shows a schematic top view of the fingerprint identification device of the embodiment shown in FIG. 4 .

As shown in FIG. 5 , the light guide plate 250 may adopt a rectangular structure, its area is larger than that of the fingerprint chip 220 , and it covers and is disposed above the fingerprint chip 220 and the supporting member 240 . In other embodiments, the light guide plate 250 can also be other polygonal structures, circular structures, elliptical structures, or other special-shaped structures, etc. The embodiment of the present application does not limit the specific shape of the light guide plate 250, and aims to make the light guide plate 250 can cover and be arranged above the fingerprint chip 220 , and only need to provide a uniform light signal for the user's finger at the first area 202 in the glass plate 201 .

Optionally, in the embodiment shown in FIG. 5 , two point light sources 210 are correspondingly arranged on each side of the rectangular light guide plate 250 to provide symmetrical light source signals for the rectangular light guide plate 250 . In other implementation manners, the point light sources 210 may also be provided only on one side of the light guide plate 250 to reduce the number of point light sources to reduce costs. The number and arrangement of the point light sources 210 in the embodiment shown in FIG. 5 are only examples, which are not specifically limited in this embodiment of the present application.

In the above embodiments, the light guide plate 250 can be understood as a light guide element. In addition to using the light guide plate 250 to convert the light signal of the light source 210, other light guide elements, such as glass sheets, can also be used to control the light source 210. The optical signal is converted, and the cost of the fingerprint identification device is reduced while achieving improved fingerprint imaging.

FIG. 6 shows a schematic structural diagram of another fingerprint identification device provided by an embodiment of the present application.

As shown in Figure 6, the fingerprint identification device 200 also includes: a glass sheet 260, which is arranged between the glass sheet 201 and the fingerprint chip 220, the light source 210 is arranged on the side of the glass sheet 260, and the light emitting surface of the light source 210 faces the glass sheet 260 , so that the glass sheet 260 can receive the light signal emitted by the light source 210 to a maximum extent.

Optionally, the glass sheet 260 can be any glass material whose refractive index is greater than that of air and has good light transmission performance. The glass plate 201 is made of glass, so the refractive index between the two is similar, and the glass plate 260 and the glass plate 201 can be regarded as a unified whole. When the light signal emitted by the light source 210 enters the inside of the glass plate 260 from the side of the glass plate 260, the light signal is easy to form a total reflection optical path transmission inside the glass plate 260 and the glass plate 201. When the user’s finger presses on the glass plate 201 In the first area, the fingerprint ridge is in contact with the glass plate 201, and the refractive index of the finger skin is close to that of the glass, which can destroy the total reflection of the optical signal inside the glass plate, so the optical signal after passing through the fingerprint ridge can be detected by the fingerprint chip. 220 receives, and when the user's finger presses on the first area of the glass plate 201, there is still an air gap between the fingerprint valley and the glass plate 201, which cannot destroy the total reflection of the optical signal. Therefore, the fingerprint ridge optical signal received by the fingerprint chip 220 The light intensity is different from the light intensity of the fingerprint valley light signal, which can form a fingerprint image for fingerprint identification.

Therefore, based on the technical solutions of the above embodiments, the glass sheet can use the principle of total reflection of light signals to convert at least part of the light signal of the light source into a total reflection light signal transmitted inside the glass sheet and the glass plate, and use the total reflection light The signal is used as a light source signal for fingerprint identification, which can improve the fingerprint imaging effect of the fingerprint identification device.

Optionally, as shown in FIG. 6 , in the embodiment of the present application, the thickness of the glass sheet 260 can be controlled within 0.4mm or 0.3mm, on the basis of improving the fingerprint recognition performance of the fingerprint recognition device, it will not take up too much space. Multiple thickness spaces.

Further, as shown in FIG. 6, the support member 240 can be connected to the glass sheet 260 and the circuit board 230, so as to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201, specifically, the fingerprint chip 220 and the circuit board 230 can be installed The circuit board 230 is installed under the glass sheet 260 . In this embodiment, the related dimensions of the circuit board 230 , the fingerprint chip 220 and the supporting member 240 can refer to the related description of the above embodiments. In addition, in this embodiment, there may be a gap of not more than 0.1mm (preferably 0.05mm) between the fingerprint chip 220 and the glass sheet 260 to meet the optical imaging requirements and prevent the fingerprint chip 220 and the glass sheet 260 from directly contacting each other. The contact causes the two to collide with each other, which affects the reliability of the fingerprint chip 220 .

Optionally, for the corresponding top view of the embodiment shown in FIG. 6 , refer to the top view shown in FIG. 5 , that is, the light guide plate 250 in FIG. 5 can be replaced with a glass sheet 260 . For the shape of the glass sheet 260 and the arrangement of the light sources 210 in the embodiment shown in FIG. 6 , please refer to the relevant descriptions of the light guide plate 250 and the light source 210 in FIG. 5 above, and details are not repeated here.

In the above embodiments shown in FIGS. 4 to 6, light guide elements (such as light guide plate 250 or glass sheet 260) are used to improve the optical signal for fingerprint identification to improve the quality of fingerprint imaging. Based on the light guide element, FIG. 7 shows A schematic structural diagram of another fingerprint recognition device 200 provided by an embodiment of the present application is shown, and FIG. 8 shows a schematic top view of the embodiment shown in FIG. 7 .

Taking the light guide element as the light guide plate 250 as an example, as shown in FIG. 7 and FIG. Below, the light source 210 is disposed outside the window 253 and on the side of the light guide plate 250 , and the light emitting surface of the light source 210 faces the light guide plate 250 .

Further, in the embodiment shown in FIG. 7, the support member 240 can be connected to the glass plate 201 and the circuit board 230, so as to realize that the fingerprint chip 220 and the circuit board 230 are installed under the glass plate 201, and the circuit board 230, the fingerprint chip 220 and at least part of the supporter 240 are located in the window 253 of the light guide plate 250 .

Optionally, as an example, FIG. 7 shows a propagation path of an optical signal emitted by the light source 210 passing through the light guide plate 250 and the glass plate 201 , and the optical signal is only for illustration and not for limitation. The light guide plate 250 is intended to provide light signals to the glass plate 201 , and the light signals can reach the first area through internal transmission (such as total reflection transmission) of the glass plate 201 , and then be received by the fingerprint chip 220 after being reflected by a finger.

Through the technical solutions of the above embodiments, on the one hand, the light guide plate can be used to convert the light signal of the light source to form a uniform light signal surrounding the first area, improving the fingerprint imaging effect; on the other hand, forming a window in the light guide plate, The supporting member can be connected to the glass plate and the circuit board, so as to realize the direct installation of the fingerprint chip and the circuit board under the glass plate, which can reduce the overall thickness of the fingerprint identification device.

It can be understood that, in the embodiments shown in FIG. 7 and FIG. 8 above, the light guide plate 250 can be replaced by a glass sheet 260, which can also improve the fingerprint recognition light source and fingerprint imaging effect, and the light guide plate 250 or light guide glass 260 can pass through The adhesive layer is fixedly disposed on the lower surface of the glass plate 201 . Optionally, as shown in FIG. 8 , the window 253 can also be adapted to the shape of the fingerprint chip 220 and is a quadrangular window, or the window 253 in the light guide plate 250 can be adapted to the shape of a finger fingerprint and is oval or circular. The window, or, the window 253 may also be a window of any other shape, which is not specifically limited in this application.

Optionally, in the technical solutions of the above embodiments, in order to optimize the fingerprint imaging effect, the fingerprint recognition device further includes: an optical component. As an example, FIG. 9 shows that based on the embodiment in FIG. 2 , the fingerprint recognition device 200 further A schematic block diagram of optical assembly 270 is included.

As shown in FIG. 9 , the optical component 270 includes: a microlens array and at least one aperture layer disposed below the microlens array. Wherein, the microlens array includes a plurality of microlenses, and each microlens is used to condense the light signal above it and transmit it to the aperture layer below it. The aperture layer is made of light-absorbing material, and a plurality of light-through holes are arranged in it, and the plurality of light-through holes are used to select the direction of the light signal converged by the microlens, so that the fingerprint light signal passing through the finger The fingerprint optical signal in the target direction enters the fingerprint chip 220 through the light-through aperture, while the stray light signal in the non-target direction is absorbed by the light-absorbing material in the area where the non-light-through aperture is located in the diaphragm layer, thereby preventing the stray light signal from Interference with fingerprint imaging. Optionally, the optical component 270 can be integrally packaged in the fingerprint chip, or can be independently arranged above the chip.

It should be noted that, on the basis that the fingerprint identification device includes the optical component 270, the gap above the fingerprint chip 220 specifically refers to the gap above the optical component 270, and the gap is used to provide the optical path distance between the user's finger and the optical component 270. , to ensure the imaging performance of the optical component 270.

It should also be noted that FIG. 9 only shows the case where the optical assembly 270 includes one diaphragm layer, and optionally, the optical assembly 270 may also include multiple diaphragm layers. The fingerprint chip 220 includes a pixel array composed of a plurality of pixel units, each microlens in the microlens array corresponds to at least one light-through aperture in each diaphragm layer, and at least one pixel unit in the pixel array, each Each micro-lens transmits the converging light signal to the inside of the corresponding light-through aperture, and through the light-through aperture to the corresponding pixel unit for optical fingerprint imaging.

Optionally, multiple pixel units in the fingerprint chip 220 can be used to receive fingerprint light signals in the same direction, for example, multiple pixel units all receive fingerprint light signals perpendicular to the display screen, or multiple pixel units all receive fingerprint light signals Fingerprint light signals in a specific direction on the display. Optionally, multiple pixel units in the fingerprint chip 220 can also be used to receive fingerprint light signals from different directions to form fingerprint image signals of multiple fingerprint images.

In the embodiment of the present application, the optical component 270 adopts the structure shown in FIG. 9 above. Compared with the fingerprint identification device based on optical lens imaging, it can not be limited by the imaging optical path of the control lens, and the thickness of the optical component can be reduced, which is beneficial to realize The thinner and thinner fingerprint identification device is suitable for installation in devices with high space requirements such as notebook computers, while the optical lens imaging fingerprint identification device has high requirements for lens thickness and optical path length, so it is not suitable for installation in notebook computers and other spaces. higher-demand equipment. In addition, compared with the optical fingerprint detection device based on collimator layer imaging, the optical component of the embodiment of the present application does not need to be limited by the aspect ratio of the collimator layer, it uses a microlens array to converge the optical signal, and Using one or more diaphragm layers to guide the direction of the optical signal can improve the quality of the fingerprint optical signal, and can also achieve thickness compression while improving the fingerprint detection performance of the fingerprint identification device.

In conjunction with Fig. 2 to Fig. 9 above, the fingerprint identification device provided in the embodiment of the present application for setting in a notebook computer is described. The fingerprint identification device has an ultra-thin thickness and is suitable for being installed under a thicker glass. The safety performance and the mechanical performance of the notebook computer can be improved at the same time, and it is beneficial to the ultra-thin development of the notebook computer.

In order to improve the aesthetics of the fingerprint identification device installed in the notebook computer, facilitate user pressing, and improve user experience, FIG. 10 shows a schematic structural diagram of another fingerprint identification device provided by an embodiment of the present application.

As shown in FIG. 10 , in the embodiment of the present application, the fingerprint identification device 200 is used to be arranged under the glass plate 201 in the area where the pressing plate and/or touch bar of the notebook computer are located, and the first area of the glass plate 201 is used for To receive the pressing of the user's finger, and the first area is provided with a first light-transmitting layer 2021, and the second area around the first area is provided with a second light-transmitting layer 2022, wherein the first light-transmitting layer 2021 is used to transmit Infrared light and blocking visible light, the second transparent layer 2022 is used to transmit visible light;

The fingerprint identification device 200 includes:

The first light source 211 is arranged obliquely below the first area, and is used to emit a visible light signal, and the visible light signal is received by the user through the second light-transmitting layer 2022, so as to prompt the user to press the first area with a finger;

The second light source 212 is arranged obliquely below the first area, and is used to emit an infrared light signal to the user's finger pressed on the first area;

The fingerprint chip 220 is disposed under the first area, and is used for receiving the above-mentioned infrared light signal passing through the first light-transmitting layer 2021 and returning the fingerprint infrared light signal after passing through the user's finger for fingerprint identification.

In the embodiment of the present application, the fingerprint identification device is arranged under the glass plate of the notebook computer, and a first light-transmitting layer is set on the first area of the glass plate corresponding to the fingerprint chip. The first light-transmitting layer can block visible light, thereby preventing The user observes the fingerprint identification device below through the glass plate, thereby optimizing the appearance of the notebook computer. At the same time, the first light-transmitting layer can pass infrared light, so that the infrared light can reach the user's finger as an optical signal for fingerprint identification. While taking into account the fingerprint identification, the appearance problem of the fingerprint identification device under the glass plate in the notebook computer is solved.

Further, in the embodiment of the present application, a second light-transmitting layer is provided on the periphery of the first area where the first light-transmitting layer is located, and the second light-transmitting layer is used to pass through visible light to remind the user of the location of the first area. The location guides the user's finger to press on the first area. Therefore, the fingerprint chip corresponding to the lower part of the first area can receive fingerprint optical signals with strong light intensity and high quality. While taking into account the performance of fingerprint identification, the user can quickly Find the fingerprint recognition area of the notebook computer to improve the user's experience with the notebook computer.

Optionally, as an example, FIG. 10 shows a propagation path of optical signals emitted by the first light source 211 and the second light source 212 passing through the glass plate 201 , and the optical signals are only for illustration and not limitation. For example, the visible light signal emitted by the first light source 211 in FIG. 2 is not only directly emitted through the glass plate 201 through the second light-transmitting layer 2022 on the right side of the figure, but also transmitted inside the glass plate 201 and passed through the second light-transmitting layer 2022 on the left side of the figure. The second transparent layer 2022 emits light.

Optionally, the first light source 211 and the second light source 212 may be two light sources in the light source 210 in the above embodiment. For example, the first light source 211 may include one or more visible light sources, and the multiple visible light sources may be used to emit visible light signals of different colors and different wavelength bands respectively. The second light source 212 may include one or more infrared light sources. The wavelength can be between 800nm and 1000nm. The first light source 211 and the second light source 212 can be arranged around the first area.

As an example, the first light source 211 may include color light sources of at least two colors, and the color light sources of at least two colors are used to emit light alternately in sequence, and form a flowing light signal through the second transparent layer to prompt the user Fingers press against the first area.

In some embodiments, the above-mentioned color light sources of at least two colors may include a red light source and a green light source. Alternatively, in other implementation manners, the light sources of at least two colors may also include light sources of other colors, which is not specifically limited in this embodiment of the present application.

Optionally, among the above-mentioned color light sources of at least two colors, the color light sources of the same color are arranged at intervals, and the color light sources of different colors are arranged adjacently.

For the second light source, if there are multiple second light sources, and the multiple second light sources are all used to emit optical signals of the same wavelength band, then the multiple second light sources can be arranged at intervals, that is, two second light sources A first light source may be arranged at intervals.

Optionally, the above-mentioned first light-transmitting layer 2021 includes but is not limited to light-transmitting ink, for example, the first light-transmitting layer 2021 may be infrared light-transmitting ink, and the infrared light-transmitting ink can be used to absorb or block visible light.

Optionally, in some embodiments, the above-mentioned second transparent layer 2022 may be an air layer, that is, the second region of the glass plate 201 is in contact with air. Alternatively, in some other implementation manners, the above-mentioned second light-transmitting layer 2022 may also be light-transmitting ink for passing visible light.

As shown in FIG. 10, optionally, in the third area of the glass plate 201 except the first area and the second area, an opaque layer 2023 can also be provided, and the opaque layer 2023 can be used to block the light from the notebook. The optical signal inside the computer is received by the user, which prevents the user from observing the internal structure of the notebook computer through the glass plate 201 and improves the aesthetics of the notebook computer.

Optionally, the opaque layer 2023 can be opaque ink, and the color of the opaque ink can be designed according to actual needs, for example, the opaque ink can be designed in color to further enhance the appearance of the notebook computer Spend.

FIG. 11 shows a schematic top view of the first transparent layer 2021 , the second transparent layer 2022 and the opaque layer 2023 in the embodiment of the present application.

As shown in Figure 11, in the embodiment of the present application, the first light-transmitting layer 2021 can be adapted to finger prints and is designed as a circle. The finger pressing area is designed. As an example, the area of the first transparent layer 2021 may be slightly larger than the finger pressing area when the finger presses the glass plate 201 .

Adapting to the circular first light-transmitting layer 2021, the second light-transmitting layer 2022 surrounding the first light-transmitting layer 2021 can be in the shape of a ring, and the width of the ring can be adjusted according to the user's visual effect and the overall shape of the notebook computer. The appearance is designed. As an example but not a limitation, the width of the ring-shaped second transparent layer 2022 may be less than or equal to 3mm.

Optionally, in addition to the first light-transmitting layer 2021 and the second light-transmitting layer 2022 being in the shape shown in FIG. Like the first transparent layer 2021, the second transparent layer 2022 can also be a polygonal ring (such as a quadrangular ring), an elliptical ring or other irregular ring structures, which are not specifically limited in this embodiment of the present application.

In the above embodiments, the first light-transmitting layer 2021 can be used to transmit infrared light signals, and the fingerprint infrared light signals after passing through the finger can also be received by the fingerprint chip 220 after passing through the first light-transmitting layer 2021 . However, the first light-transmitting layer 2021 has a certain degree of haze, which will scatter the passing infrared light signal and fingerprint infrared light signal, thus causing the divergence of the light signal. After divergence, only a part can be received by the fingerprint chip 220, so that the signal amount of the fingerprint infrared light signal received by the fingerprint chip 220 is reduced, affecting the fingerprint imaging effect and fingerprint recognition performance.

Based on the above problems, FIG. 12 shows another schematic top view of the first transparent layer 2021 , the second transparent layer 2022 and the opaque layer 2023 in the embodiment of the present application.

As shown in FIG. 12 , in the embodiment of the present application, a plurality of small holes 2024 are provided in the first light-transmitting layer 2021 , and optionally, the plurality of small holes 2024 can be arranged in an array in the first light-transmitting layer 2021 .

Through the above implementation, a plurality of small holes are provided in the first light-transmitting layer, which can reduce the scattering effect on the fingerprint infrared light signal caused by the haze of the first light-transmitting layer, and the fingerprint infrared light signal can directly pass through the first light-transmitting layer. The small holes in the layer are received by the fingerprint chip, which increases the signal volume of the fingerprint infrared light signal received by the fingerprint chip, thereby improving the fingerprint imaging effect and fingerprint recognition performance.

Optionally, in this embodiment of the application, due to the strong penetrating ability of the infrared light signal, the returned fingerprint infrared light signal after passing through the user's finger not only carries the fingerprint information on the surface of the finger, but also carries the blood vessels inside the finger, Biometric information such as blood flow. Therefore, the fingerprint infrared light signal returned after passing through the user's finger can not only be used for fingerprint identification, but also can be used for the detection of the user's biometric information, such as the detection of blood pressure, blood oxygen and heart rate, etc. . The biometric information obtained by the detection can not only be provided to the user, so that the user can understand its own health status to improve the user's experience of using the notebook computer, but also can be used to judge whether the finger is a real finger, preventing the attack of the fake finger on the notebook computer, and further Improve the security performance of notebook computers.

Referring back to FIG. 10 , in the embodiment of the present application, before the user presses the first area, the first light source 211 is not only used to emit visible light signals to prompt the user to press the first area with the finger, but also when the user presses the first area with the finger. At this time, the first light source 211 can also be used to continue to emit visible light, and the visible light signal can also pass through the second light-transmitting layer 2022 to reach the user's finger, and the fingerprint visible light signal after passing through the user's finger can also enter the fingerprint chip 220, the fingerprint visible light signal and /Or the above-mentioned fingerprint infrared light signal can be used to detect the biometric information of the user.

As an illustration, in FIG. 10 , the light signal emitted by the first light source 211 can pass through the finger and then directly pass through the second transparent layer 2022 and the glass plate 201 to reach the fingerprint chip 220 . In addition to this method, the visible light passing through the finger can be transmitted inside the glass plate 201 after passing through the second transparent layer 2022 , and then transmitted to the fingerprint chip 220 after being refracted or reflected by the glass plate 201 .

Optionally, the second light source 212 can be used to emit infrared light with a wavelength of 940nm, and the fingerprint infrared light signal formed after the infrared light passes through the finger can be used for blood pressure detection and heart rate detection of the user; optionally, the first light source 211 can be used for It emits red light of about 660nm, and the fingerprint red light signal formed after the red light passes through the finger and the above-mentioned fingerprint infrared light signal can be jointly used for blood oxygen detection of the user. In other implementation manners, the first light source 211 and the second light source 212 may also be used to emit optical signals of other wavelengths for detecting other types of biometric information, which is not specifically limited in this embodiment of the present application.

In some implementations of the embodiments of the present application, the second light source can emit light before the first light source. After the second light source emits light stably, the first light source emits a visible light signal to prompt the user to press the first area with his finger. Finally, the fingerprint chip is used to receive the fingerprint infrared light signal to form a frame of fingerprint image. This frame of fingerprint image is used to judge whether the user's finger press is valid. A multi-frame fingerprint image is formed, and the multi-frame fingerprint image is used for fingerprint identification.

As an example, in the above embodiments, the pressing area of the finger on the first area can be calculated through a pre-collected frame of fingerprint image. If the pressing area is greater than the preset threshold, it is judged that the pressing of the user's finger is valid. On the contrary, if the pressing area is not is greater than the preset threshold, it is judged that the user's finger press is invalid. Optionally, when the user's finger press is invalid, the user can be prompted that the pressing position is incorrect in various ways. For example, the first light source can emit different prompting lights to remind the user that the pressing position is incorrect, or the display of the notebook computer can also be used to remind the user that the pressing position is incorrect. The screen prompts the user to press the wrong position.

In the above embodiment, judging whether the user's finger pressing is valid through a pre-collected frame of fingerprint images can make the notebook computer unnecessary to install touch sensors or pressure sensors to detect finger pressing, reducing the overall manufacturing cost of the notebook computer.

Optionally, after collecting multiple frames of fingerprint images through the above technical solution to perform fingerprint recognition on the user's finger, the user's finger can be further detected for biometric information. In some implementations, only the second light source can be used for biometric information detection. Or, in other embodiments, the first light source and the second light source can also be used to jointly detect biometric information. In this case, the first light source can include: a first prompt light source (such as a red light source) and a second light source A detection light source (such as a green light source), the first prompt light source is different from biometric information detection, and is only used to provide prompt light to the user, while the first detection light source is used for biometric detection.

Specifically, after entering the biometric information detection link, the light source used for biometric information detection is turned on first, for example, the second light source and the first detection light source are turned on first, and then the light emitting mode of the first prompt light source can be different from the above-mentioned The way the first light source emits light during the fingerprint identification process is intended to prompt the user to enter the biometric information detection stage. The fingerprint chip is used to receive fingerprint visible light signals and/or fingerprint infrared light signals to obtain reference biometric information. The feature information is used to judge whether the user's finger press is valid; when the user's finger press is valid, the fingerprint chip is used to continuously receive fingerprint visible light signals and/or fingerprint infrared light signals to obtain target biometric information.

As an example, in the above embodiments, it can be judged whether the user's finger press is valid based on the information amount of the reference biometric information collected in advance. If the information amount is greater than the preset threshold, it is judged that the user's finger press is valid. If the preset threshold is set, it is judged that the user's finger press is invalid. Optionally, when the user’s finger press is invalid, the user can be prompted that the pressing position is incorrect in various ways. For example, the first prompting light source can emit different prompting lights to prompt the user that the pressing position is incorrect, or the notebook computer can also be used to indicate that the pressing position is incorrect. The display screen prompts the user to press the wrong position.

Through the above process, combined with the recognition results of the multi-frame fingerprint images and the target biometric information, the final result of the fingerprint recognition is determined. If the recognition results of the multi-frame fingerprint images are successful, and the target biometric information is within the preset target range, then It is judged that the fingerprint identification is successful, and further, target biometric information can be provided to the user. If the recognition result of the multiple frames of fingerprint images is failure, and/or the target biological feature information is outside the preset target range, it is determined that the fingerprint recognition has failed.

It should be noted that the above biometric information detection link can be performed independently after collecting multiple frames of fingerprint images for fingerprint recognition, that is, when the user needs to measure the biometric information, the laptop can send the information based on the user’s The detection command of the biometric information is used to control the fingerprint identification device to measure the biometric information independently.

Combining with the fingerprint identification device 200 shown in FIG. 10 above, FIG. 13 shows a schematic structural diagram of another fingerprint identification device 200 provided by the embodiment of the present application.

As shown in Figure 13, in the embodiment of the present application, the fingerprint identification device 200 may further include:

The supporting member 240 is disposed around the fingerprint chip 220 and connected to the upper surface of the circuit board 230 . The supporting member 240 is used to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201 .

Optionally, in the embodiment of the present application, the overall thickness of the circuit board 230, the fingerprint chip 220 and the support member 240 is not greater than 0.4mm, so as to reduce the thickness of their installation in the notebook computer.

Figure 14 shows a schematic top view of the fingerprint identification device of the embodiment shown in Figure 13, and the illustration of the first light-transmitting layer 2021 is omitted in Figure 14, but the inner circle area of the second light-transmitting layer 2022 can be understood is the area where the first transparent layer 2021 is located.

As shown in Figure 13 and Figure 14, the first light-transmitting layer 2021 can cover the upper part of the fingerprint chip 220 and the support 240, in other words, the fingerprint chip 220 and the support 240 are on the plane where the first light-transmitting layer 2021 is located. The projection can be located in the first transparent layer 2021 . Therefore, the first light-transmitting layer 2021 can be used to cover the fingerprint chip 220 and the supporting member 240 to solve the appearance problems caused by these two components.

Optionally, in the embodiment shown in FIG. 13 , the support member 240 installs the fingerprint chip 220 and the circuit board 230 under the glass plate 201 in the same manner as the embodiment shown in FIG. 2 above, that is, the support member 240 is connected to The glass plate 201 and the circuit board 230 are used to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201 . For the related technical solutions of the glass plate 201, the fingerprint chip 220, the circuit board 230 and the support member 240, please refer to the relevant descriptions of the embodiments in Fig. 2 and Fig. 3 above, and will not be repeated here.

In addition, for the related technical features of the first light source 211 and the second light source 212 in the embodiment of the present application, please refer to the related description of the light source 210 in FIG. 2 and FIG. 3 above, and will not repeat them here.

It should be noted that the fingerprint chip 220 in the embodiment of the present application can be installed under the glass plate 201 in other ways besides referring to the embodiment shown in FIG. The structural member installed under the glass plate 201 in the notebook computer, or the fingerprint chip 220 can also be installed under the glass plate 201 through the support member 240 and the circuit board 230 in any of the ways shown in FIG. 4 , FIG. 6 or FIG. 7 .

As an example, Fig. 15 and Fig. 16 show a schematic structural diagram and a schematic top view of the fingerprint chip 220 installed under the glass plate 201 using the installation scheme shown in Fig. The light plate 250 and the supporting member 240 can be connected to the light guide plate 250 and the circuit board 230 so as to install the fingerprint chip 220 and the circuit board 230 under the glass plate 201 .

In the embodiment of the present application, the first light source 211 may include a first color light source 2111 and a second color light source 2112, as shown in Figure 15 and Figure 16, the first color light source 2111, the second color light source 2112 The light-emitting surfaces of 2112 and the second light source 212 are both facing the side of the light guide plate 250 .

As shown in Figure 16, the area of the light guide plate 250 can be larger than the outer circle area of the second light-transmitting layer 2022, and the orthographic projection of the second light-transmitting layer 2022 on the plane where the light guide plate 250 is located is completely located in the light guide plate 250, so as to ensure The light signal transmitted by the second light-transmitting layer 2022 is a light signal with uniform brightness after being converted by the light guide plate 250 .

Optionally, in the embodiment shown in FIG. 16, the first color light source 2111, the second color light source 2112 and the second light source 212 can be respectively arranged on different sides of the light guide plate 250, specifically, the first color light source 2111 are arranged on the first side of the light guide plate 250 (such as the lower side of the light guide plate 250 shown in FIG. The left side of the light guide plate 250), the second light source 212 is arranged on the third side of the light guide plate 250 (for example, the upper side of the light guide plate 250 shown in FIG. 16 ).

Optionally, the first color light source 2111, the second color light source 2112 and the second light source 212 are all point light sources, and the number of each light source is between 2 and 6. As an example, in FIG. 16, each The number of light sources is 2.

Optionally, the first color light source 2111 and the second color light source 2112 include but are not limited to: a red light source and a green light source, and the embodiment of the present application does not limit the color and specific emission wavelength band of the color light source . Preferably, in the embodiment of the present application, the first light source is selected from a red light source and a green light source, wherein the red light signal emitted by the red light source has a longer wavelength and can be used for biometric detection. The green light signal is more sensitive, and the green light source can be used to prompt the user.

It should be noted that, besides the first color light source 2111, the second color light source 2112 and the second light source 212 can be arranged on different sides of the light guide plate 250 according to the arrangement shown in FIG. Arranged on the same side of the light guide plate 250, for example, the multiple light sources are arranged on the same side of the light guide plate 250 at intervals, and the application does not specifically limit the arrangement of the light sources on the side of the light guide plate.

In addition, in the embodiment of the present application, in addition to including two color light sources, the first light source 211 may also include only one color light source, or more than two color light sources. In the case of using two-color light sources, visible light signals of different wavelength bands can be provided for biometric identification, and prompt lights of different colors can be provided to users to improve user experience.

Optionally, when the first light source 211 includes at least two color light sources, the at least two color light sources can emit light alternately, and pass through the ring-shaped second light-transmitting layer 2022 to provide users with color Transformed flow aperture. As an example, in the case where the first light source 211 includes a first color light source 2111 and a second color light source 2112, the first color light source 2111 and the second color light source 2112 emit light alternately, and the time of each light emission is preset The time is, for example, 0.2s. In specific implementation, the alternate lighting of the first color light source 2111 and the second color light source 2112 can be controlled by a control signal generated by the processing unit, the control signal can be, for example, a pulse width modulation (PWM) signal.

Optionally, in order to improve the aesthetics of the flowing aperture, among the above-mentioned color light sources of at least two colors, the color light sources of the same color can be located on the same side of the rectangular light guide element, and the color light sources of different colors can be located on the rectangular light guide element different sides of the .

In order to further improve the aesthetics of the flowing aperture, FIG. 17 shows a schematic top view of another fingerprint identification device 200 .

As shown in Figure 17, in the embodiment of the present application, the light guide plate 250 is designed in a windmill shape. Specifically, the windmill-shaped light guide plate 250 may include a central part and a plurality of windmill rotor parts, and the central part may be adapted to the shape of a finger. , is circular or elliptical, and the shape of the windmill rotor part may be similar to the shape of a shark fin. The plurality of windmill rotor parts are disposed around the central part and connected to the central part to form a windmill-shaped light guide plate 250 .

In the embodiment of the present application, the projection of the second transparent layer 2022 on the plane where the light guide plate 250 is located is located in the center of the light guide plate 250 . Optionally, the area of the circular central portion of the light guide plate 250 may be greater than or equal to the area of the outer circle of the ring-shaped second transparent layer 2022 . As an example, in the embodiment shown in FIG. 17 , the area of the central part of the circle is the same as the area of the outer circle of the ring-shaped second transparent layer 2022 . The plurality of windmill rotor parts have a first straight side, the first straight side is perpendicular to the tangent line of the central part of the circle, in addition, the plurality of windmill rotor parts also have a first arc-shaped side, and the first arc-shaped side is in line with the circle The tight connection of the central part.

Further, in the embodiment of the present application, the first light source 211 and the second light source 212 can be arranged on the first straight side of the above-mentioned plurality of windmill rotor parts, and the light-emitting surfaces of the first light source 211 and the second light source 212 face the first The side of the rotor part of the windmill where the straight side is located.

Through the above-mentioned embodiment, the light guide plate is designed in a windmill shape, and the light source is adapted to the windmill-shaped light guide plate, and is arranged on the side of the windmill rotor part of the light guide plate, and the light signal of the light source is introduced into the light guide plate through the windmill rotor part of the light guide plate The central part, that is, the part corresponding to the second light-transmitting layer, can enhance the flowing luminous effect of the optical signal.

In some implementations, for example, in the embodiment shown in FIG. 17 , the windmill-shaped light guide plate 250 includes four windmill rotor parts, and a light source is provided on the straight side of each windmill rotor part. Optionally, two second The two light sources are arranged on two opposite windmill rotor parts, and one first color light source 2111 and one second color light source 2112 are respectively arranged on the other two opposite windmill rotor parts.

In other embodiments, the windmill-shaped light guide plate 250 may also include other numbers of windmill rotors, for example, may include more than four windmill rotors, in this case, the distance between adjacent windmill rotors becomes smaller , and the side of the rotor part of the windmill can be provided with more light sources. Optionally, the color light sources of the same color or the second light source can be arranged symmetrically, and the color light sources of different colors can be arranged adjacently, which is conducive to further improving the second light source. The flowing luminous effect of the aperture at the second light-transmitting layer.

It should be noted that, in the above embodiments shown in Figures 15 to 17, the light guide plate 250 is used as an example to illustrate the relevant design in the fingerprint identification device, and the light guide plate 250 in the embodiments shown in Figures 15 to 17 is also It can be replaced by a glass sheet 260, or a window can be provided in the light guide plate 250 and the glass sheet 260. For the related technical solutions of the glass sheet 260 and the window, please refer to the relevant description of the embodiments shown in FIGS. 6 to 8 above. I won't go into details here.

The above combined with Figure 10 to Figure 17 illustrates that the present application provides several fingerprint recognition devices, which can solve the problem of notebook computers while taking into account fingerprint recognition by arranging the first light-transmitting layer and the second light-transmitting layer on the glass plate. The appearance problem of the fingerprint identification device under the middle glass plate is solved, and an indicating light signal is provided to the user, so that the user can quickly find the fingerprint identification area of the notebook computer, and the user experience of the notebook computer is improved.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application.

For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately.

As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application.

The embodiment of the present application also provides a notebook computer, which may include: a display screen and a host, wherein the host includes a glass plate and a fingerprint identification device arranged under the glass plate, and the fingerprint identification device may be any one of the above The fingerprint identification device 200 in the embodiment. Optionally, the notebook computer may be the notebook computer 100 shown in FIG. 1 . Optionally, the glass plate has a thickness of 0.7mm to 2.5mm.

It should be understood that the specific examples in the embodiments of the present application are only for helping those skilled in the art to better understand the embodiments of the present application, rather than limiting the scope of the embodiments of the present application.

It should be understood that the terms used in the embodiments of the present application and the appended claims are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. For example, the singular forms of "a", "above" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

Those of ordinary skill in the art can realize that the units of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software In the above description, the components and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium In, several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific embodiment of the application, but the scope of protection of the application is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the scope of the technology disclosed in the application. Modifications or replacements, these modifications or replacements shall be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A fingerprint identification device is characterized in that it is used to be arranged under the glass plate in the area where the pressing plate and/or touch strip of the notebook computer are located, and the fingerprint identification device includes:

a light source, arranged obliquely below the first area of the glass plate, for emitting light signals to the user's finger pressed on the first area;

A fingerprint chip, arranged below the first area;

A circuit board, arranged on the lower surface of the fingerprint chip and electrically connected to the fingerprint chip;

A support member is arranged around the fingerprint chip and connected to the upper surface of the circuit board, the support member is used to install the fingerprint chip and the circuit board under the glass plate;

Wherein, the overall thickness of the circuit board, the fingerprint chip and the support member is not greater than 0.4mm;

The optical signal emitted by the light source is irradiated to the user's finger through the glass plate, and the fingerprint chip is used for receiving the fingerprint optical signal returned from the user's finger and passing through the glass plate for fingerprint identification.
The fingerprint recognition device according to claim 1, wherein the thickness of the glass plate is 0.7 mm to 2.5 mm.
The fingerprint identification device according to claim 1 or 2, wherein the light source is arranged on the lower surface of the glass plate, and the light emitting surface of the light source faces the glass plate;

The supporting member is connected to the glass plate and the circuit board to install the fingerprint chip and the circuit board under the glass plate.
The fingerprint identification device according to claim 1 or 2, characterized in that the fingerprint identification device further comprises: a light guide element arranged between the first area of the glass plate and the fingerprint chip, the light source It is arranged on the side of the light guide element, and the light emitting surface of the light source faces the light guide element;

The supporting member is connected to the light guide element and the circuit board, so as to install the fingerprint chip and the circuit board under the glass plate.
The fingerprint recognition device according to claim 1 or 2, characterized in that, the fingerprint recognition device further comprises: a light guide element arranged between the glass plate and the fingerprint chip, and the light guide element is set There is a window, the window is correspondingly arranged under the first region of the glass plate, the light source is arranged on the side of the light guide element, and the light emitting surface of the light source faces the light guide element;

The support member is connected to the glass plate and the circuit board to install the fingerprint chip and the circuit board under the glass plate, and the circuit board, the fingerprint chip and the support member At least part of is located in the window of the light guiding element.
The fingerprint identification device according to any one of claims 1 to 5, characterized in that, the thickness of the fingerprint chip is within 0.15 mm, and/or the thickness of the circuit board is within 0.2 mm.
The fingerprint recognition device according to claim 6, wherein the thickness of the fingerprint chip is within 0.08 mm, and/or the thickness of the circuit board is within 0.15 mm.
The fingerprint identification device according to any one of claims 1 to 7, wherein the thickness of the support member is greater than the thickness of the fingerprint chip, so that there is an air gap above the fingerprint chip, and the air gap The thickness is within 0.1mm.
The fingerprint identification device according to claim 8, wherein the thickness of the air gap is within 0.05 mm.
The fingerprint identification device according to claim 4 or 5, characterized in that the thickness of the light guide element is not greater than 0.4 mm.
The fingerprint identification device according to any one of claims 4, 5 and 10, wherein the light guide element is a light guide plate, and the light guide plate is used to convert the light signal of the light source into the A uniform light signal emitted by the first region of the glass plate.
The fingerprint identification device according to any one of claims 4, 5 and 10, wherein the light guide element is a glass sheet, and the glass sheet and the glass plate are used to use at least part of the light source The light signal is converted to a totally reflected light signal propagating in the glass sheet and the glass plate.
The fingerprint identification device according to any one of claims 1 to 12, characterized in that the fingerprint identification device further comprises: an optical component arranged above the fingerprint chip;

The optical assembly includes: a microlens array;

At least one diaphragm layer is arranged below the microlens array, and a plurality of light-through small holes are formed in each diaphragm layer of the at least one diaphragm layer;

The microlens array is used for converging target direction fingerprint light signals in the fingerprint light signals into a plurality of small apertures in the at least one diaphragm layer, and the target direction fingerprint light signals pass through the plurality of apertures. The small light hole is transmitted to the fingerprint chip for fingerprint identification.
The fingerprint identification device according to any one of claims 1 to 13, characterized in that, the support member is black foam, and/or, the upper surface of the circuit board is coated with a black light-shielding layer.
The fingerprint recognition device according to any one of claims 1 to 14, characterized in that, the first area of the glass plate is provided with a first light-transmitting layer, and the second area on the periphery of the first area is provided with a first transparent layer. Two light-transmitting layers, wherein the first light-transmitting layer is used to transmit infrared light and block visible light, and the second light-transmitting layer is used to transmit visible light;

The light source includes a first light source and a second light source, the first light source is used to emit a visible light signal, and the visible light signal is received by the user through the second light-transmitting layer, so as to prompt the user to place a finger on the first area. Pressing, the second light source is used to emit an infrared light signal to the user's finger pressed on the first area;

The fingerprint chip is used to receive the fingerprint infrared light signal returned after the infrared light signal passes through the first light-transmitting layer and passes through the user's finger for fingerprint identification.
The fingerprint identification device according to claim 15, wherein the first light source is also used to emit the visible light signal to the user's finger pressed on the first area, and the fingerprint chip is also used to receiving the fingerprint visible light signal returned after the visible light signal passes through the second light-transmitting layer and the user's finger, the fingerprint visible light signal and/or the fingerprint infrared light signal are used to detect the biometric information of the user .
The fingerprint identification device according to claim 15 or 16, wherein the fingerprint chip is used to receive the fingerprint infrared light signal to form a frame of fingerprint image, and the frame of fingerprint image is used to judge the fingerprint of the user. Whether the compression is effective;

When the user's finger press is effective, the fingerprint chip is used to continuously receive the fingerprint infrared light signal to form a multi-frame fingerprint image, and the multi-frame fingerprint image is used for fingerprint identification.
The fingerprint identification device according to claim 16 or 17, wherein the fingerprint chip is used to receive the fingerprint visible light signal and/or the fingerprint infrared light signal to obtain reference biometric information, and the reference biometric The information is used to judge whether the user's finger press is effective;

When the user's finger press is valid, the fingerprint chip is used to continuously receive the fingerprint visible light signal and/or the fingerprint infrared light signal to obtain target biological feature information.
The fingerprint recognition device according to any one of claims 15 to 18, wherein the first light source includes color light sources of at least two colors, and the color light sources of at least two colors are used for sequentially alternating emit light, and form a light-changing area through the second light-transmitting layer, so as to prompt the user to press the first area with a finger.
The fingerprint identification device according to claim 19, wherein the color light sources of at least two colors include a red light source and a green light source.
The fingerprint identification device according to claim 19 or 20, characterized in that, the fingerprint identification device further comprises: a rectangular light guide element, among the color light sources of at least two colors, the color light sources of the same color are located at the The same side of the rectangular light guide element, and the color light sources of different colors are located on different sides of the rectangular light guide element.
The fingerprint recognition device according to any one of claims 15 to 20, characterized in that the fingerprint recognition device further comprises: a windmill-shaped light guide element, the windmill-shaped light guide element includes a central part and a plurality of A windmill rotor part, the central part is circular or elliptical, and a plurality of windmill rotor parts are arranged around the central part and connected to the central part;

The first light source and the second light source are respectively arranged on the side surfaces of the plurality of windmill rotor parts, and the plurality of windmill rotor parts are used to guide the optical signals of the first light source and the second light source into the Describe the center.
The fingerprint recognition device according to claim 22, wherein the projection of the second light-transmitting layer on the plane where the light-guiding element is located is located in the center of the light-guiding element.
The fingerprint identification device according to claim 22 or 23, wherein the first light source includes at least two color light sources, and the at least two color light sources are used to emit light alternately in sequence, and the Among the color light sources of at least two colors, the color light sources of the same color are arranged at intervals, and the color light sources of different colors are arranged adjacently.
The fingerprint identification device according to any one of claims 15 to 24, wherein the first light-transmitting layer is arranged over the fingerprint chip and the supporting member.
The fingerprint identification device according to any one of claims 15 to 25, characterized in that, the fingerprint identification device further comprises: a light guide element, and the second light-transmitting layer is on the plane where the light guide element is located. A projection is located in the light guiding element.
The fingerprint identification device according to any one of claims 15 to 26, wherein the first transparent layer is circular, and the second transparent layer is circular; or,

The first transparent layer is elliptical, and the second transparent layer is elliptical.
The fingerprint identification device according to any one of claims 15 to 27, wherein the first light-transmitting layer is an infrared-transmitting ink layer, and the second light-transmitting layer is a visible light-transmitting ink layer.
The fingerprint recognition device according to any one of claims 15 to 28, wherein a plurality of small holes are provided in the first transparent layer to reduce the impact of the haze of the first transparent layer on the Scattering of fingerprint infrared light signals.
The fingerprint identification device according to any one of claims 15 to 29, characterized in that, the third area on the periphery of the second area of the glass plate is provided with an opaque layer, and the opaque layer is used to block Light signals from inside the notebook are received by the user.
A notebook computer, characterized in that it comprises: a display screen and a host;

Wherein, the host computer includes a glass plate and a fingerprint identification device arranged under the glass plate, and the fingerprint identification device is the fingerprint identification device according to any one of claims 1-30.
A fingerprint identification device, characterized in that it is arranged under the glass plate in the area where the pressing plate and/or touch bar of the notebook computer are located, the first area of the glass plate is used to receive the pressing of the user's finger, and the The first area is provided with a first light-transmitting layer, and the second area around the first area is provided with a second light-transmitting layer, wherein the first light-transmitting layer is used to transmit infrared light and block visible light, so The second light-transmitting layer is used to transmit visible light, and the fingerprint identification device includes:

The first light source is arranged obliquely below the first area, and is used to emit a visible light signal, and the visible light signal is received by the user through the second light-transmitting layer, so as to prompt the user to press the first area with a finger ;

The second light source is arranged obliquely below the first area, and is used to emit an infrared light signal to the user's finger pressed on the first area;

The fingerprint chip is arranged under the first area, and is used for receiving the fingerprint infrared light signal returned after the infrared light signal passes through the first light-transmitting layer and passes through the user's finger for fingerprint identification.
The fingerprint identification device according to claim 32, wherein the first light source is also used to emit the visible light signal to the user's finger pressed on the first area;

The fingerprint chip is also used to receive the fingerprint visible light signal returned after the visible light signal passes through the second light-transmitting layer and passes through the user's finger, and the fingerprint visible light signal and/or the fingerprint infrared light signal are used for Perform user biometric information detection.
The fingerprint identification device according to claim 32 or 33, wherein the fingerprint chip is used to receive the fingerprint infrared light signal to form a frame of fingerprint image, and the frame of fingerprint image is used to judge whether the user's finger Whether the compression is effective;

When the user's finger press is effective, the fingerprint chip is used to continuously receive the fingerprint infrared light signal to form a multi-frame fingerprint image, and the multi-frame fingerprint image is used for fingerprint identification.
The fingerprint identification device according to claim 33, wherein the fingerprint chip is used to receive the fingerprint visible light signal and/or the fingerprint infrared light signal to obtain reference biometric information, and the reference biometric information is used To determine whether the user's finger press is effective;

When the user's finger press is valid, the fingerprint chip is used to continuously receive the fingerprint visible light signal and/or the fingerprint infrared light signal to obtain target biological feature information.
The fingerprint identification device according to any one of claims 32 to 35, wherein the first light source includes color light sources of at least two colors, and the color light sources of at least two colors are used for sequentially alternating emit light, and form a flowing light signal through the second light-transmitting layer, so as to prompt the user's finger to press the first area.
The fingerprint identification device according to claim 36, wherein the color light sources of at least two colors include a red light source and a green light source.
The fingerprint identification device according to any one of claims 32 to 37, characterized in that the first light-transmitting layer covers and is arranged above the fingerprint chip.
The fingerprint identification device according to any one of claims 32 to 38, characterized in that, the first transparent layer is circular, the second transparent layer is circular, or the first The transparent layer is elliptical, and the second transparent layer is elliptical.
The fingerprint recognition device according to any one of claims 32 to 39, wherein the first light-transmitting layer is an infrared-transmitting ink layer, and the second light-transmitting layer is a visible light-transmitting ink layer.
The fingerprint identification device according to any one of claims 32 to 40, wherein a plurality of small holes are provided in the first transparent layer to reduce the impact of the haze of the first transparent layer on the Scattering of fingerprint infrared light signals.
The fingerprint identification device according to any one of claims 32 to 41, characterized in that, the third area around the second area of the glass plate is provided with an opaque layer, and the opaque layer is used to block Light signals from inside the notebook are received by the user.
The fingerprint identification device according to any one of claims 32 to 42, characterized in that, the fingerprint identification device further comprises: an optical component arranged above the fingerprint chip;

The optical assembly includes: a microlens array;

At least one diaphragm layer is arranged below the microlens array, and a plurality of light-through small holes are formed in each diaphragm layer of the at least one diaphragm layer;

The microlens array is used for converging target direction fingerprint light signals in the fingerprint light signals into a plurality of light-through small holes of the at least one diaphragm layer, and the target direction fingerprint light signals pass through the plurality of light-through holes. The pinholes are transmitted to the fingerprint chip for fingerprint identification.
The fingerprint identification device according to any one of claims 32 to 43, wherein the first light source and the second light source are arranged on the lower surface of the glass plate, and the first light source and the second light source are The light-emitting surface of the second light source faces the glass plate.
The fingerprint identification device according to any one of claims 32 to 43, characterized in that, the fingerprint identification device further comprises: a light guide element disposed between the glass plate and the fingerprint chip, the second A light source and the second light source are arranged on the side of the light guide element, and the light-emitting surfaces of the first light source and the second light source face the light guide element.
The fingerprint identification device according to claim 45, wherein the projection of the second light-transmitting layer on the plane where the light-guiding element is located is located in the light-guiding element.
The fingerprint recognition device according to claim 45 or 46, wherein the light guide element is a light guide plate, and the light guide plate is used to convert the light signal of the light source into uniform light emitted toward the glass plate Signal.
The fingerprint recognition device according to claim 45 or 46, wherein the light guide element is a glass sheet, and the glass sheet and the glass plate are used to convert at least part of the light signal of the light source into The glass sheet and the totally reflected optical signal propagating in the glass sheet.
The fingerprint recognition device according to any one of claims 45 to 48, wherein the light guide element is a rectangular light guide element, the first light source includes color light sources of at least two colors, and the at least The color light sources of two colors are used to emit light alternately in sequence; and

Among the color light sources of at least two colors, the color light sources of the same color are located on the same side of the rectangular light guide element, and the color light sources of different colors are located on different sides of the rectangular light guide element.
The fingerprint identification device according to any one of claims 45 to 48, wherein the light guide element is a windmill-shaped light guide element, and the windmill-shaped light guide element includes a central part and a plurality of windmill rotors part, the central part is circular or elliptical, and a plurality of the windmill rotor parts are arranged around the central part and connected to the central part;

The first light source and the second light source are respectively arranged on the side surfaces of the plurality of windmill rotor parts, and the plurality of windmill rotor parts are used to guide the optical signals of the first light source and the second light source into the Describe the center.
The fingerprint identification device according to claim 50, wherein the projection of the second light-transmitting layer on the plane where the light-guiding element is located is located in the center of the light-guiding element.
The fingerprint identification device according to claim 50 or 51, wherein the first light source comprises color light sources of at least two colors, and the color light sources of at least two colors are used to emit light alternately in sequence; and

Among the color light sources of at least two colors, the color light sources of the same color are arranged at intervals, and the color light sources of different colors are arranged adjacently.
The fingerprint identification device according to any one of claims 32 to 43, characterized in that the fingerprint identification device further comprises: a circuit board disposed on the lower surface of the fingerprint chip and electrically connected to the fingerprint chip;

The supporting member is arranged around the fingerprint chip and connected to the upper surface of the circuit board, and the supporting member is used for installing the fingerprint chip and the circuit board under the glass plate.
The fingerprint recognition device according to claim 53, wherein the supporting member is connected to the glass plate and the circuit board, so as to install the fingerprint chip and the circuit board under the glass plate.
The fingerprint identification device according to claim 53, characterized in that, the fingerprint identification device further comprises: a light guide element arranged between the glass plate and the fingerprint chip, the support member is connected to the guide optical elements and the circuit board, so that the fingerprint chip and the circuit board are installed under the glass plate.
The fingerprint identification device according to claim 53, characterized in that, the fingerprint identification device further comprises: a light guide element arranged between the glass plate and the fingerprint chip, and a window is arranged in the light guide element , the window is correspondingly disposed under the first region of the glass plate;

The support member is connected to the glass plate and the circuit board to install the fingerprint chip and the circuit board under the glass plate, and the circuit board, the fingerprint chip and the support member At least part of is located in the window of the light guiding element.
The fingerprint identification device according to any one of claims 53 to 56, characterized in that the overall thickness of the circuit board, the fingerprint chip and the support member is not greater than 0.4 mm.
The fingerprint identification device according to claim 57, wherein the thickness of the fingerprint chip is within 0.15 mm, and/or the thickness of the circuit board is within 0.2 mm.
The fingerprint identification device according to claim 57 or 58, wherein the thickness of the fingerprint chip is within 0.08 mm, and/or the thickness of the circuit board is within 0.15 mm.
The fingerprint recognition device according to any one of claims 57 to 59, characterized in that, the thickness of the support member is greater than the thickness of the fingerprint chip, so that there is an air gap above the fingerprint chip, and the air gap The thickness is within 0.1mm.
The fingerprint identification device according to claim 60, wherein the thickness of the air gap is within 0.05mm.
The fingerprint identification device according to any one of claims 32 to 61, wherein the thickness of the glass plate is 0.7 mm to 2.5 mm.
A notebook computer, characterized in that it includes: a display screen and a host, the host includes a glass plate and a fingerprint identification device arranged under the glass plate;

Wherein, the first area of the glass plate is used to receive the pressure of the user's finger, and the first area is provided with a first light-transmitting layer, and the second area around the first area is provided with a second light-transmitting layer, The first transparent layer is used to transmit infrared light and block visible light, and the second transparent layer is used to transmit visible light;

The fingerprint recognition device is the fingerprint recognition device according to any one of claims 32-62.