CN106960197B - Electronic equipment, fingerprint identification device and function starting method - Google Patents
Electronic equipment, fingerprint identification device and function starting method Download PDFInfo
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- CN106960197B CN106960197B CN201710197114.3A CN201710197114A CN106960197B CN 106960197 B CN106960197 B CN 106960197B CN 201710197114 A CN201710197114 A CN 201710197114A CN 106960197 B CN106960197 B CN 106960197B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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Abstract
The embodiment of the invention relates to the technical field of electronic products, and discloses electronic equipment, a fingerprint identification device and a function starting method. In an embodiment of the present invention, a fingerprint identification apparatus includes: the flexible printed circuit board comprises a Flexible Printed Circuit (FPC), a fingerprint identification chip and a pressure induction layer; the FPC comprises a first wiring layer and a second wiring layer; the bottom surface of the fingerprint identification chip is fixed on the first routing layer; the bottom surface of the pressure induction layer is fixed on the second routing layer; when the FPC is in a bent state, the top surface of the pressure sensing layer corresponds to the bottom surface of the fingerprint identification chip. The embodiment of the invention also provides the electronic equipment and a function starting method; the embodiment of the invention integrates the fingerprint identification chip and the pressure sensing layer into a whole, so that the fingerprint identification device has a pressure sensing function, realizes the function diversification of the fingerprint identification device, saves space and materials, has a simple structural form, and brings convenience for production and manufacturing.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronic products, in particular to electronic equipment, a fingerprint identification device and a function starting method.
Background
The existing intelligent terminals such as mobile phones and tablet computers are generally applied to daily life of people, and due to the portability requirement and the appearance requirement of the intelligent terminals, the structural space is very limited, so that people always strive to realize more functions in the limited space so as to provide better experience for users. Wherein, fingerprint identification device among the intelligent terminal for intelligent terminal has the fingerprint identification function, provides convenience for people's life.
The fingerprint identification device in the existing intelligent terminal has a fingerprint identification function. However, in the process of implementing the present invention, the inventors found that the following problems exist in the prior art: most of the existing fingerprint identification devices do not have the pressure sensing function, and the realized function is single; the unique fingerprint identification device with the pressure sensing function is realized based on a capacitance technology, and the cost and the structural requirement are high. In addition, when current fingerprint identification device was applied to intelligent terminal, the collocation had the dome piece, consequently need dig the through-hole in the position that corresponds to fingerprint identification device on the transparent cover plate for fingerprint identification device and transparent cover plate are movable, and this leads to gapped existence between fingerprint identification device and the through-hole, are unfavorable for waterproofly.
Disclosure of Invention
An object of the embodiments of the present invention is to provide an electronic device, a fingerprint identification device, and a function starting method, which integrate a fingerprint identification chip and a pressure sensing layer into a whole, so that the fingerprint identification device has a pressure sensing function, realizes the function diversification of the fingerprint identification device, saves space and materials, has a simple structural form, and brings convenience to manufacturing.
In order to solve the above technical problem, an embodiment of the present invention provides a fingerprint identification device, including: the flexible printed circuit board comprises a Flexible Printed Circuit (FPC), a fingerprint identification chip and a pressure induction layer; the FPC comprises a first wiring layer and a second wiring layer; the bottom surface of the fingerprint identification chip is fixed on the first routing layer; the bottom surface of the pressure induction layer is fixed on the second routing layer; when the FPC is in a bent state, the top surface of the pressure sensing layer corresponds to the bottom surface of the fingerprint identification chip.
An embodiment of the present invention further provides an electronic device, including: the fingerprint identification device and the transparent cover plate; the FPC is in a bent state, and the top surface of the pressure induction layer corresponds to the bottom surface of the fingerprint identification chip and is fixed on the second routing layer; the fingerprint identification chip is arranged on the transparent cover plate.
An embodiment of the present invention further provides a function starting method applied to the electronic device, where the function starting method includes: when the pressing operation is detected, identifying the pressing pressure corresponding to the pressing operation; when fingerprint information is judged to be collected, generating a function starting signal according to the pressing pressure; and starting the corresponding function according to the function starting signal.
An embodiment of the present invention further provides a function starting method applied to the electronic device, where the function starting method includes: when the pressing operation is detected, identifying the pressing pressure corresponding to the pressing operation; generating a function starting signal according to the pressing pressure; and when the fingerprint information is judged to be collected, starting the corresponding function according to the function starting signal.
Compared with the prior art, the embodiment of the invention provides a fingerprint identification device, and the fingerprint identification device comprises a fingerprint identification chip and a pressure induction layer; promptly, integrate fingerprint identification chip and forced induction layer in an organic whole, saved the space, and make the fingerprint identification device have the forced induction function, realize that the fingerprint identification device function is diversified, promoted user experience. In addition, the embodiment of the invention realizes the pressure sensing function by utilizing the pressure sensing layer, replaces the mode of realizing the pressure sensing function based on the capacitance technology in the prior art, has high flexibility and simple structural form, reduces the cost and brings convenience to production and manufacture. In addition, when the fingerprint identification device provided by the embodiment of the invention is applied to electronic equipment, the dome sheet does not need to be matched, so that the transparent cover plate does not need to be provided with a through hole, materials are saved, and the electronic equipment is favorable for water resistance.
In addition, the fingerprint identification device also comprises an induction processing chip; the induction processing chip is arranged on the second routing layer and connected to the pressure induction layer. In this embodiment, the sensing processing chip is connected to the pressure sensing layer to independently process the signal generated by the pressure sensing layer, thereby reducing the burden of the processor.
In addition, the fingerprint identification device also comprises an insulating layer; the insulating layer is arranged on the second routing layer and covers the pressure sensing layer. In this embodiment, the pressure sensing layer is covered by the insulating layer; namely, the pressure sensing layer is sealed, so that the pressure sensing layer is insulated from the outside, the pressure sensing layer is protected, and meanwhile, the insulating layer can prevent short circuit and is dustproof and moistureproof.
In addition, the FPC further includes an intermediate layer; the middle layer is arranged between the first routing layer and the second routing layer. In this embodiment, the middle layer is disposed between the first routing layer and the second routing layer, and can be used as a common routing layer of the first routing layer and the second routing layer, so that space between the first routing layer and the second routing layer is saved, and appearance of the fingerprint identification device is improved; or the middle layer can be used as a signal shielding layer of the first routing layer and the second routing layer so as to reduce interference between the pressure sensing layer and the fingerprint identification chip.
In addition, the transparent cover plate comprises an inner surface and an outer surface; the outer surface of the transparent cover plate is provided with a groove; the top surface of the fingerprint identification chip is arranged on the inner surface of the transparent cover plate and corresponds to the groove. In this embodiment, the surface of transparent cover plate has the recess, has reduced the distance of staff's finger and fingerprint identification device, has strengthened the collection ability of touch feel and fingerprint information.
In addition, the transparent cover plate is provided with a through hole; the fingerprint identification chip is positioned in the through hole. In the embodiment, the fingerprint identification chip is positioned in the through hole, so that the finger of a human hand can directly touch the fingerprint identification chip; namely, the fingerprint identification device is suitable for the existing electronic equipment, and the application range is expanded.
In addition, the electronic equipment also comprises a sealing colloid; the sealing colloid is arranged between the fingerprint identification chip and the through hole. In this embodiment, the sealing colloid sets up between fingerprint identification chip and through-hole for the clearance between fingerprint identification chip and the through-hole is sealed, thereby is favorable to waterproofly, has brought the convenience for the user.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic plan view of a fingerprint recognition device according to a first embodiment;
fig. 2 is a schematic cross-sectional view of a fingerprint recognition device according to a first embodiment;
fig. 3 is a schematic cross-sectional view of a fingerprint recognition device according to a first embodiment in a bent state;
FIG. 4 is a schematic plan view of a fingerprint identification device according to a second embodiment;
FIG. 5 is a schematic cross-sectional view of a fingerprint recognition device according to a second embodiment in a folded state;
fig. 6 is a schematic cross-sectional view of a fingerprint recognition device according to a third embodiment;
FIG. 7 is a schematic cross-sectional view of a fingerprint recognition device according to a third embodiment in a folded state;
fig. 8 is a schematic cross-sectional view of a fingerprint recognition device according to a fourth embodiment;
fig. 9 is a schematic cross-sectional view of an electronic device according to a fifth embodiment;
FIG. 10 is a schematic cross-sectional view of a transparent cover plate with grooves according to a fifth embodiment;
fig. 11 is a schematic cross-sectional view of an electronic device according to a sixth embodiment;
fig. 12 is a detailed flowchart of a function starting method according to a seventh embodiment;
fig. 13 is a detailed flowchart of a function startup method according to an eighth embodiment;
fig. 14 is a detailed flowchart of a function starting method according to a ninth embodiment;
fig. 15 is a detailed flowchart of a function starting method according to a tenth embodiment;
fig. 16 is a detailed flowchart of a function startup method according to the eleventh embodiment;
fig. 17 is a specific flowchart of a function startup method according to the twelfth embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a fingerprint recognition device applied to an electronic device, such as a mobile phone, as shown in fig. 1 to 3, the fingerprint recognition device including: the device comprises a flexible circuit board FPC1, a fingerprint identification chip 2 and a pressure induction layer 3.
In the present embodiment, the FPC1 includes a first wiring layer 11 and a second wiring layer 12 (for example, the FPC1 is a double-sided board, but is not limited thereto). The bottom surface of the fingerprint identification chip 2 is fixed on the first routing layer 11; the bottom surface of the pressure sensing layer 3 is fixed on the second wiring layer 12; wherein, when the FPC1 is in a bent state, the top surface of the pressure-sensitive layer 3 corresponds to the bottom surface of the fingerprint recognition chip 2.
The embodiment provides a fingerprint identification device, and the fingerprint identification device comprises a fingerprint identification chip and a pressure induction layer; promptly, integrate fingerprint identification chip and forced induction layer in an organic whole, saved the space, and make the fingerprint identification device have the forced induction function, realize that the fingerprint identification device function is diversified, promoted user experience. And this embodiment utilizes the forced induction layer to realize the forced induction function, has replaced among the prior art the mode based on capacitive technology realizes the forced induction function, and the flexibility ratio is high, and structural style is simple, and the cost is reduced has brought the convenience for manufacturing. In addition, when the fingerprint identification device of the embodiment is applied to electronic equipment, the dome sheets do not need to be matched, materials are saved, the transparent cover plate does not need to be provided with through holes, the materials are saved, and the electronic equipment is favorable for water resistance.
Optionally, the pressure sensing layer 3 is made of a pressure-sensitive material, and the deformation of the pressure sensing layer 3 may cause a change in resistance of the pressure-sensitive material itself, so as to change a voltage signal and implement detection of pressure and pressure magnitude. However, the material of the pressure-sensitive layer 3 is not limited in this embodiment, and any material capable of achieving the corresponding function can be used in this embodiment.
In the present embodiment, as shown in fig. 2 and 3, the fingerprint recognition device further includes a reinforcing plate 4 (for example, a steel reinforcing plate, but not limited thereto). The stiffening plate 4 is arranged on the second routing layer 12 corresponding to the position of the fingerprint identification chip 2, and supports and bears the fingerprint identification chip 2. In this embodiment, the reinforcing plate 4 may be fixed on the second wiring layer 12 by a conductive double-sided adhesive layer, but is not limited thereto in practice.
In fact, in this embodiment, the fingerprint recognition device further includes a connector 5 and an interface reinforcing plate 51 for supporting the connector 5. The connector 5 may be disposed on one of the first wiring layer 11 and the second wiring layer 12, and the interface stiffener 51 may be disposed on the other wiring layer at a position corresponding to the connector 5. The present embodiment does not limit the installation position of the connector 5 at all, and can adjust the installation position according to the actual interface position of the processor; for example, at an end of the second wiring layer 12 remote from the stiffener 4.
Preferably, in the present embodiment, the second wiring layer 12 has two pads 121. The bottom surface of the pressure sensing layer 3 is fixed to the second routing layer 12 through two bonding pads 121, so that the pressure sensing layer 3 and the two bonding pads 121 form a piezoresistor-like element; in practice, the bonding pad 121 may be a copper exposed area on the second wiring layer 12, but is not limited thereto in practice. The pressure-sensitive layer 3 can also be fixed to the second routing layer 12 by other means, and this embodiment does not limit this.
Specifically, as shown in fig. 1, the fingerprint identification chip 2 is connected to the connector 5 through traces 21, the pressure sensing layer 3 is connected to the connector 5 through traces 1211 and 1212, and the connector 5 is used to connect to a processor for processing signals generated by the fingerprint identification chip 2 and the pressure sensing layer 3.
In this embodiment, the fingerprint identification chip 2 may be fixed to the first wiring layer 11 by Surface Mount Technology (SMT), but in practice, the present embodiment is not limited thereto, and the fixing manner of the fingerprint identification chip 2 is not limited in any way.
A second embodiment of the present invention relates to a fingerprint recognition device. The second embodiment is an improvement on the first embodiment, and the main difference is that: as shown in fig. 4 and 5, in the second embodiment of the present invention, the fingerprint identification device further includes an induction processing chip 6.
In the present embodiment, the sensing processing chip 6 is disposed on the second wiring layer 12 and connected to the pressure sensing layer 3. Specifically, the sensing processing chip 6 is connected to the pressure sensing layer 3 through traces 1211 and 1212, and the sensing processing chip 6 is connected to the connector 5 through trace 61, and the connector 5 is used for connecting the processor to process signals generated by the fingerprint identification chip 2 and the sensing processing chip 6.
In the present embodiment, the sensing processing chip 6 may be fixed to the second routing layer 12 by Surface Mount Technology (SMT), but the present embodiment is not limited thereto, and the fixing manner of the sensing processing chip 6 is not limited in any way.
Compared with the first implementation mode, the fingerprint identification device of the embodiment of the invention further comprises the sensing processing chip, and the sensing processing chip is connected to the pressure sensing layer so as to independently process the signals generated by the pressure sensing layer, thereby reducing the burden of a processor.
A third embodiment of the present invention relates to a fingerprint recognition device. The third embodiment is improved on the basis of the first embodiment, and the main improvement lies in that: as shown in fig. 6 and 7, in the third embodiment of the present invention, the fingerprint recognition device further includes an insulating layer 7.
In this embodiment, the insulating layer 7 is disposed on the second wiring layer 12 and covers the pressure-sensitive layer 3, so that the pressure-sensitive layer 3 is insulated from the outside.
In fact, this embodiment may also be a solution improved on the basis of the second embodiment.
In this embodiment, compared to the first embodiment, the fingerprint identification device further includes an insulating layer, and the insulating layer covers the pressure sensing layer; namely, the pressure sensing layer is sealed, so that the pressure sensing layer is insulated from the outside, the pressure sensing layer is protected, and meanwhile, the insulating layer can prevent short circuit and is dustproof and moistureproof.
A fourth embodiment of the present invention relates to a fingerprint recognition device. The fourth embodiment is improved on the basis of the first embodiment, and the main improvement lies in that: as shown in fig. 8, in the fourth embodiment of the present invention, the FPC1 further includes an intermediate layer 13.
In the present embodiment, intermediate layer 13 is provided between first wiring layer 11 and second wiring layer 12.
In fact, the present embodiment may also be a modified solution based on the second or third embodiment.
Compared with the first implementation mode, the FPC further includes an intermediate layer, and the intermediate layer is disposed between the first routing layer and the second routing layer, and can be used as a common routing layer of the first routing layer and the second routing layer, so that space between the first routing layer and the second routing layer is saved, and appearance of the fingerprint identification device is improved; or the middle layer can be used as a signal shielding layer of the first routing layer and the second routing layer so as to reduce interference between the pressure sensing layer and the fingerprint identification chip.
A fifth embodiment of the present invention relates to an electronic apparatus, such as a mobile phone, and as shown in fig. 9, the electronic apparatus includes: the fingerprint recognition device according to any one of the first to fourth embodiments and the transparent cover 8.
In this embodiment, taking the fingerprint identification device in the third embodiment as an example, the FPC1 is in a bent state, and the top surface of the pressure-sensitive layer 3 corresponds to the bottom surface of the fingerprint identification chip 2 and is fixed to the second routing layer; the fingerprint identification chip 2 is disposed on the transparent cover 8 (for example, the transparent cover 8 may be a glass cover), and the reinforcing plate 5 is grounded.
In fact, in this embodiment, the electronic device further includes a buffer member 91. The buffer member 91 is disposed on the first wiring layer 11 at a position corresponding to the pressure sensitive layer 3. The buffer member 91 may be foam rubber, but is not limited thereto in practice.
In this embodiment, the electronic device further includes an adhesive layer 92. The reinforcing plate 4 and the insulating layer 7 are fixed together by the adhesive layer 92, so that when the FPC1 is in a bent state, the fingerprint identification chip 2 and the pressure sensing layer 3 can be fixed in a direction perpendicular to the transparent cover plate 8.
In practice, the electronic device further comprises a processor. The connector 5 is connected to the processor; in the present embodiment, the connector 5 may be a board-to-board connector (BTB), but is not limited thereto, and may also be a zero insertion force connector (ZIF), for example.
Preferably, as shown in fig. 10, in the present embodiment, the transparent cover plate 8 includes an inner surface 81 and an outer surface 82. The outer surface 82 of the transparent cover plate 8 has a groove 83; the top surface of the fingerprint identification chip 2 is disposed on the inner surface 81 of the transparent cover 8 and corresponds to the groove 83. In this embodiment, the surface of transparent cover plate has the recess, has reduced the distance of staff's finger and fingerprint identification device, has strengthened the collection ability of touch feel and fingerprint information.
Compared with the first embodiment, the electronic equipment comprises the fingerprint identification device provided by the embodiment of the invention, so that the electronic equipment saves space, and dome sheets are not needed to be matched, so that the transparent cover plate is not needed to be provided with through holes, materials are saved, convenience is provided for production and manufacture, the electronic equipment is favorable for waterproofing, and user experience is improved.
A sixth embodiment of the present invention relates to an electronic apparatus, and is substantially the same as the fifth embodiment except that: in a fifth embodiment of the invention, the outer surface of the transparent cover plate 8 has grooves. In the sixth embodiment of the present invention, as shown in fig. 11, the transparent cover plate 8 has a through hole.
In this embodiment, the fingerprint recognition chip 2 is located in the through hole. Thus, the finger of the human hand can directly touch the fingerprint identification chip 2.
Preferably, in this embodiment, the electronic device further includes a sealing adhesive. The sealing colloid is arranged between the fingerprint identification chip 2 and the through hole; i.e. in the gap formed by the fingerprint recognition chip 2 and the through hole.
Compared with the fifth embodiment, the fingerprint identification device according to the embodiment of the invention can be applied to electronic equipment in the prior art, and the application range is expanded. In addition, in this embodiment, the sealing colloid sets up between fingerprint identification chip and through-hole for the clearance between fingerprint identification chip and the through-hole is sealed, thereby is favorable to waterproofly, has brought the convenience for the user.
A seventh embodiment of the present invention relates to a function starting method applied to the electronic device according to the fifth or sixth embodiment, and as shown in fig. 12, the function starting method according to the present embodiment includes:
and step 101, when the pressing operation is detected, identifying the pressing pressure corresponding to the pressing operation.
In this embodiment, the pressing operation can be detected from the change in the voltage signal, and the pressing pressure corresponding to the pressing operation can be recognized.
In this embodiment, when a human body touches the fingerprint identification chip, the fingerprint identification chip receives the capacitance signal. Therefore, whether fingerprint information is collected or not can be judged by detecting whether the capacitance signal is received or not.
In this embodiment, when fingerprint information is collected, a function activation signal is generated according to the pressing pressure. The function start signal may be a picture switching signal, a request refresh signal, etc., and this embodiment does not limit this, and may be set according to actual needs.
And 104, starting the corresponding function according to the function starting signal.
Compared with the prior art, the embodiment provides a function starting method, and after fingerprint information is judged to be collected, a corresponding function is started according to a generated function starting signal; that is, the corresponding function is started after the pressing operation is confirmed to be the human body pressing operation, the non-human body pressing operation (for example, when the mobile phone is placed in a bag, the metal key extrudes the mobile phone) is neglected, the related functions are effectively prevented from being triggered by other non-human body pressing operations, the mistaken touch is effectively prevented, and convenience is provided for a user.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
An eighth embodiment of the present invention relates to a function starting method. The eighth embodiment is an improvement of the seventh embodiment, and the main improvement is that: as shown in fig. 13, in the eighth embodiment of the present invention, the tactile feedback is stronger.
The function starting method of this embodiment is shown in fig. 13, steps 201 to 204 are the same as steps 101 to 104 in the seventh embodiment, and are not repeated here, and after generating the function starting signal according to the pressing pressure, step 205 is added in this embodiment, which is specifically described as follows:
In this embodiment, a motor in the electronic device may provide haptic feedback based on the received haptic feedback signal.
In fact, the step may also be a step between step 203 and step 204, but this embodiment does not limit this.
This embodiment generates a haptic feedback signal, further enhancing the haptic feedback effect to provide a better haptic experience than the seventh embodiment.
A ninth embodiment of the present invention relates to a function starting method. The ninth embodiment is a refinement of the seventh embodiment, and the main refinement is as follows: as shown in fig. 14, in the eighth embodiment of the present invention, the generation of the function activation signal is detailed.
As shown in fig. 14, steps 301 to 302 and 304 are the same as steps 101 to 102 and 104 in the seventh embodiment, and are not repeated here, and step 303 in this embodiment includes the following sub-steps in generating a function start signal according to a pressing pressure:
sub-step 3031, identifying a pressure level of the pressing pressure.
In this embodiment, the pressure level of the pressing pressure may be divided into a heavy pressure and a light pressure, a pressure range of the heavy pressure and the light pressure may be set, and when the pressing pressure is identified to be within the pressure range, the pressure level corresponding to the pressure range may be identified. The pressure range of the light pressure is (1, 2) stages, and the pressure range of the heavy pressure is greater than or equal to 2 stages, which is only an exemplary illustration and is not limited in practice.
And a substep 3032, obtaining the operation function corresponding to the pressure grade according to the preset corresponding relationship between the pressure grade and the operation function.
In this embodiment, the preset corresponding relationship between the pressure level and the operation function can be set as required, for example, the operation function corresponding to the heavy pressure can be a flashlight that is turned on or off (but not limited thereto).
Preferably, in this embodiment, the corresponding preset corresponding relationship may also be set in different display screens. For example, in an interface for reading information, the heavy pressure corresponds to an operation function for switching the background color, and the light pressure corresponds to an operation function for displaying the next page; in the video playing interface, the heavy pressure corresponds to the operation function of volume adjustment, and the light pressure corresponds to the operation function of zooming out/in the display picture. However, this is merely an example and is not limited thereto.
In fact, this embodiment may be a scheme refined based on the eighth embodiment.
This embodiment provides a specific method for generating a function start signal by detailing the step of generating a function start signal according to the pressing pressure, compared with the seventh embodiment.
A tenth embodiment of the present invention relates to a function startup method applied to the electronic device according to the fifth or sixth embodiment, and as shown in fig. 15, the function startup method according to the present embodiment includes:
in step 401, when the pressing operation is detected, a pressing pressure corresponding to the pressing operation is identified.
In this embodiment, the pressing operation can be detected from the change in the voltage signal, and the pressing pressure corresponding to the pressing operation can be recognized.
In step 402, a function activation signal is generated based on the pressing pressure.
In this embodiment, the function start signal may be a picture switching signal, a refresh request signal, and the like, which is not limited in this embodiment and may be set according to actual needs.
In this embodiment, when a human body touches the fingerprint identification chip, the fingerprint identification chip receives the capacitance signal. Therefore, whether fingerprint information is collected or not can be judged by detecting whether the capacitance signal is received or not.
And step 404, starting the corresponding function according to the function starting signal.
Compared with the prior art, the embodiment provides another function starting method, and after the generated function starting signal, when it is determined that fingerprint information is acquired, the function corresponding to the function starting signal is restarted; that is, the corresponding function is started after the pressing operation is confirmed to be the human body pressing operation, the non-human body pressing operation (for example, when the mobile phone is placed in a bag, the metal key extrudes the mobile phone) is neglected, the related functions are effectively prevented from being triggered by other non-human body pressing operations, the mistaken touch is effectively prevented, and convenience is provided for a user.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
An eleventh embodiment of the present invention relates to a function starting method. The eleventh embodiment is an improvement of the tenth embodiment, and the main improvement is that: as shown in fig. 16, in the eleventh embodiment of the present invention, the tactile feedback is stronger.
The function starting method in this embodiment is shown in fig. 16, steps 501 to 504 are the same as steps 401 to 404 in the tenth embodiment, and are not described herein again, and step 505 is added after determining that fingerprint information is acquired in this embodiment, which is specifically described as follows:
In this embodiment, a linear motor in the electronic device may provide haptic feedback based on the received haptic feedback signal.
In fact, the step may also be a step between step 503 and step 504, but this embodiment does not limit this.
This embodiment generates a haptic feedback signal, further enhancing the haptic feedback effect to provide a better haptic experience than the seventh embodiment.
A twelfth embodiment of the present invention relates to a function starting method. The twelfth embodiment is a refinement of the tenth embodiment, and the main refinements are as follows: as shown in fig. 17, in the twelfth embodiment of the present invention, the generation of the function activation signal is detailed.
As shown in fig. 17, the function starting method according to this embodiment includes steps 601, 603 to 604, which are the same as steps 501, 403 to 404 in the tenth embodiment, and are not described herein again, and step 602 in this embodiment includes the following sub-steps in generating a function starting signal according to the pressing pressure:
sub-step 6021, identifying a pressure level of the compression pressure.
In this embodiment, the pressure level of the pressing pressure may be divided into a heavy pressure and a light pressure, a pressure range of the heavy pressure and the light pressure may be set, and when the pressing pressure is identified to be within the pressure range, the pressure level corresponding to the pressure range may be identified. The pressure range of the light pressure is (1, 2) stages, and the pressure range of the heavy pressure is greater than or equal to 2 stages, which is only an exemplary illustration and is not limited in practice.
And a substep 6022 of obtaining the operation function corresponding to the pressure grade according to the preset corresponding relationship between the pressure grade and the operation function.
In this embodiment, the preset corresponding relationship between the pressure level and the operation function can be set as required, for example, the operation function corresponding to the heavy pressure can be a flashlight that is turned on or off (but not limited thereto).
Preferably, in this embodiment, the corresponding preset corresponding relationship may also be set in different display screens. For example, in an interface for reading information, the heavy pressure corresponds to an operation function for switching the background color, and the light pressure corresponds to an operation function for displaying the next page; in the video playing interface, the heavy pressure corresponds to the operation function of volume adjustment, and the light pressure corresponds to the operation function of zooming out/in the display picture. However, this is merely an example and is not limited thereto.
In fact, this embodiment may be a scheme refined based on the eighth embodiment.
This embodiment provides a specific method for generating a function start signal by detailing the step of generating a function start signal according to the pressing pressure, compared with the seventh embodiment.
Those skilled in the art can understand that all or part of the steps in the method of the foregoing embodiments may be implemented by a program to instruct related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (17)
1. A fingerprint recognition device, comprising: the flexible printed circuit board comprises a Flexible Printed Circuit (FPC), a fingerprint identification chip and a pressure induction layer;
the FPC comprises a first wiring layer and a second wiring layer;
the bottom surface of the fingerprint identification chip is fixed on the first routing layer;
the bottom surface of the pressure induction layer is fixed on the second routing layer;
when the FPC is in a bending state, the top surface of the pressure sensing layer corresponds to the bottom surface of the fingerprint identification chip, the resistance value of the pressure sensing layer is changed when the pressure sensing layer is deformed, and the resistance value of the pressure sensing layer changes to change a voltage signal so as to realize detection of pressure and pressure magnitude.
2. The fingerprint recognition device of claim 1, wherein the fingerprint recognition device further comprises an induction processing chip;
the induction processing chip is arranged on the second routing layer and connected to the pressure induction layer.
3. The fingerprint recognition device of claim 1, wherein the second routing layer has two pads;
and the bottom surface of the pressure sensing layer is fixed on the second routing layer through the two bonding pads.
4. The fingerprint recognition device of claim 1, further comprising an insulating layer;
the insulating layer is arranged on the second routing layer and covers the pressure sensing layer.
5. The fingerprint recognition device of claim 1, wherein the FPC further comprises an intermediate layer;
the middle layer is arranged between the first routing layer and the second routing layer.
6. The fingerprint recognition device of claim 1, further comprising a stiffener;
the reinforcing plate is arranged on the second wiring layer and corresponds to the position of the fingerprint identification chip.
7. An electronic device, comprising: the fingerprint recognition device of any one of claims 1 to 6 and a transparent cover;
the FPC is in a bent state, and the top surface of the pressure induction layer corresponds to the bottom surface of the fingerprint identification chip and is fixed on the second routing layer;
the fingerprint identification chip is arranged on the transparent cover plate.
8. The electronic device of claim 7, wherein the transparent cover plate comprises an inner surface and an outer surface;
the outer surface of the transparent cover plate is provided with a groove;
the top surface of the fingerprint identification chip is arranged on the inner surface of the transparent cover plate and corresponds to the groove.
9. The electronic device of claim 7, wherein the transparent cover plate has a through hole;
the fingerprint identification chip is positioned in the through hole.
10. The electronic device of claim 9, further comprising a sealing gel;
the sealing colloid is arranged between the fingerprint identification chip and the through hole.
11. The electronic device of claim 7, further comprising a buffer;
the buffer piece is arranged on the first routing layer and corresponds to the position of the pressure sensing layer.
12. A function starting method applied to the electronic device according to any one of claims 7 to 11, the function starting method comprising:
when the pressing operation is detected, identifying the pressing pressure corresponding to the pressing operation;
when fingerprint information is judged to be collected, generating a function starting signal according to the pressing pressure;
and starting the corresponding function according to the function starting signal.
13. The function launching method of claim 12, further comprising, after said generating a function launching signal in accordance with the compression pressure:
a haptic feedback signal is generated to provide haptic feedback.
14. The method for starting up a function according to claim 12, wherein the step of generating a function start signal according to the pressing pressure specifically includes:
identifying a pressure level of the compression pressure;
acquiring an operation function corresponding to the pressure grade according to a preset corresponding relation between the pressure grade and the operation function;
and generating a function starting signal according to the operation function.
15. A function starting method applied to the electronic device according to any one of claims 7 to 11, the function starting method comprising:
when the pressing operation is detected, identifying the pressing pressure corresponding to the pressing operation;
generating a function starting signal according to the pressing pressure;
and when the fingerprint information is judged to be collected, starting the corresponding function according to the function starting signal.
16. The function launching method according to claim 15, further comprising, after the determining that fingerprint information is acquired:
a haptic feedback signal is generated to provide haptic feedback.
17. The method for starting up a function according to claim 15, wherein the step of generating a function start signal according to the pressing pressure specifically includes:
identifying a pressure level of the compression pressure;
acquiring an operation function corresponding to the pressure grade according to a preset corresponding relation between the pressure grade and the operation function;
and generating a function starting signal according to the operation function.
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| CN108196626B (en) * | 2018-01-17 | 2023-08-29 | 南昌黑鲨科技有限公司 | Screen assembly and intelligent terminal with same |
| CN110267454A (en) * | 2019-06-26 | 2019-09-20 | 深圳市新宇腾跃电子有限公司 | A kind of FPC production technology and structure |
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| US9959444B2 (en) * | 2015-09-02 | 2018-05-01 | Synaptics Incorporated | Fingerprint sensor under thin face-sheet with aperture layer |
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