CN110892402A - Fingerprint identification device, terminal equipment and manufacturing method of fingerprint identification device - Google Patents
Fingerprint identification device, terminal equipment and manufacturing method of fingerprint identification device Download PDFInfo
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- CN110892402A CN110892402A CN201980002116.XA CN201980002116A CN110892402A CN 110892402 A CN110892402 A CN 110892402A CN 201980002116 A CN201980002116 A CN 201980002116A CN 110892402 A CN110892402 A CN 110892402A
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- fingerprint identification
- glass cover
- cover plate
- fingerprint
- bumps
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
Abstract
The invention provides a fingerprint identification device, a terminal device and a manufacturing method of the fingerprint identification device. The fingerprint identification device is used for the terminal equipment; the terminal equipment comprises a glass cover plate; the glass cover plate comprises a fingerprint identification area; the fingerprint identification device is positioned on one side of the glass cover plate and is used for identifying fingerprints on the fingerprint identification area; the glass cover plate has a concave-convex pattern at the fingerprint identification area. Wherein, the non-fingerprint identification area on the glass cover plate has no concave-convex pattern. The feeling of a finger touching a fingerprint identification area on the glass cover plate is different from the feeling of a finger touching a non-fingerprint identification area on the glass cover plate. When the terminal user operates the terminal equipment, the terminal user does not need to watch the glass cover plate, only touches the glass cover plate with fingers, and determines the fingerprint identification area according to the feeling of touching the glass cover plate with the fingers. Therefore, the terminal user places a finger on the fingerprint identification area, the fingerprint identification device acquires fingerprint information, and the terminal equipment realizes an unlocking function by comparing the fingerprint information.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of fingerprint identification technologies, and in particular, to a fingerprint identification device, a terminal device, and a method for manufacturing a fingerprint identification device.
[ background of the invention ]
Fingerprints are inherent to everyone, and with the development of science and technology, a variety of terminal devices with fingerprint identification functions, such as smart phones, tablet computers, wearable devices and the like, appear on the market. Before a user operates the terminal equipment with the fingerprint identification function, the unlocking function can be realized only by touching the terminal equipment with fingers, and the operation of the unlocking function is simplified. With the increase of fingerprint identification application scenes, the demand for fingerprint identification is gradually increased. However, in the prior art, the terminal device only has a fingerprint identification area locally, and the terminal user needs to look at the terminal device to find the fingerprint identification area, which is not good in user experience.
[ summary of the invention ]
In order to solve the above technical problems, the present invention provides a fingerprint identification device, a terminal device, and a method of manufacturing a fingerprint identification device.
In a first aspect, the present invention provides a fingerprint identification device. The fingerprint identification device is used for the terminal equipment; the terminal equipment comprises a glass cover plate; the glass cover plate comprises a fingerprint identification area; the fingerprint identification device is positioned on one side of the glass cover plate and is used for identifying fingerprints on the fingerprint identification area; the glass cover plate has a concave-convex pattern at the fingerprint identification area.
In some possible implementations, the area of the fingerprint identification region is greater than or equal to 1 square millimeter.
In some possible implementations, the relief pattern includes bumps.
In some possible implementations, the relief pattern includes pits.
In some possible implementations, the relief pattern includes bumps and pits.
In some possible implementations, the size of the bumps or the pits is less than 50 microns.
In some possible implementations, a pitch of any two adjacent bumps or pits is less than 1 millimeter and greater than 50 micrometers.
In some possible implementations, the bumps or the pits exhibit any one or more of a circle, an ellipse, and a square.
In some possible implementations, the bump or the pit has a rounded edge.
In some possible implementations, the bumps or the pits are not uniformly arranged.
In a second aspect, the present invention provides a terminal device. The terminal equipment comprises a fingerprint identification device and a glass cover plate; the glass cover plate comprises a fingerprint identification area; the fingerprint identification device is positioned on one side of the glass cover plate and is used for identifying fingerprints on the fingerprint identification area; the glass cover plate has a concave-convex pattern at the fingerprint identification area.
In some possible implementations, the area of the fingerprint identification region is greater than or equal to 1 square millimeter.
In some possible implementations, the relief pattern includes bumps.
In some possible implementations, the relief pattern includes pits.
In some possible implementations, the relief pattern includes bumps and pits.
In some possible implementations, the size of the bumps or the pits is less than 50 microns.
In some possible implementations, a pitch of any two adjacent bumps or pits is less than 1 millimeter and greater than 50 micrometers.
In some possible implementations, the bumps or the pits exhibit any one or more of a circle, an ellipse, and a square.
In some possible implementations, the bump or the pit has a rounded edge.
In some possible implementations, the bumps or the pits are not uniformly arranged.
In a third aspect, the present invention provides a method of manufacturing a fingerprint identification device for a terminal device;
the manufacturing method of the fingerprint identification device comprises the following steps:
providing a glass cover plate comprising a fingerprint identification area;
forming a photoresist layer on the glass cover plate by deposition;
patterning the photoresist layer by etching;
forming a concave-convex pattern at the fingerprint identification area by etching and patterning the glass cover plate;
removing the photoresist layer by cleaning;
wherein, fingerprint identification device is located one side of glass apron, fingerprint identification device is used for discerning the fingerprint on the fingerprint identification area.
In some possible implementations, the relief pattern includes bumps or pits or both bumps and pits.
In the present invention, the glass cover plate has a concave-convex pattern at the fingerprint identification area. The non-fingerprint identification area on the glass cover plate is not provided with concave-convex patterns. The feeling of a finger touching a fingerprint identification area on the glass cover plate is different from the feeling of a finger touching a non-fingerprint identification area on the glass cover plate. When the terminal user operates the terminal equipment, the terminal user does not need to watch the glass cover plate, only touches the glass cover plate with fingers, and determines the fingerprint identification area according to the feeling of touching the glass cover plate with the fingers. Therefore, the terminal user places a finger on the fingerprint identification area, the fingerprint identification device acquires fingerprint information, and the terminal equipment realizes an unlocking function or other functions by comparing the fingerprint information. In addition, the concave-convex pattern of the glass cover plate at the fingerprint identification area is a micro pattern, the concave-convex pattern cannot be seen by naked eyes of an end user, the display of the terminal device is not influenced by the concave-convex pattern, and the appearance of the terminal device is basically kept as it is.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a terminal device in the prior art;
fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 10A and 10B are schematic structural diagrams of another terminal device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
FIG. 12 is a process diagram of a method for manufacturing a fingerprint identification device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used herein to describe devices in accordance with embodiments of the present invention, these devices should not be limited by these terms. These terms are only used to distinguish one device from another. For example, a first device may also be referred to as a second device, and similarly, a second device may also be referred to as a first device, without departing from the scope of embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a terminal device in the prior art.
As shown in fig. 1, in the related art, the terminal device 100 includes a glass cover plate 110, and the glass cover plate 110 includes a fingerprint identification area 111. When the terminal device 100 displays information related to fingerprint recognition at the fingerprint recognition area 111 of the glass cover plate 110, the terminal user sees the display of the fingerprint recognition area 111, finding the location of the fingerprint recognition area 111. However, such user experience is not good.
In order to solve the technical problem, the invention provides a fingerprint identification device and a terminal device.
Fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention; fig. 3 is another schematic structural diagram of a terminal device according to an embodiment of the present invention.
As shown in fig. 2 and 3, the fingerprint identification device 200 is used for a terminal device 300; the terminal device 300 includes a glass cover plate 310; the glass cover 310 includes a fingerprint identification area 311; the fingerprint identification device 200 is positioned on one side of the glass cover plate 310, and the fingerprint identification device 200 is used for identifying fingerprints on the fingerprint identification area 311; the glass cover 310 has a concave-convex pattern 312 at a fingerprint identification area 311.
In one embodiment of the present invention, the fingerprint recognition device 200 is used for optical fingerprint recognition. The fingerprint recognition device 200 includes a control chip, a fingerprint recognition sensor, and a fingerprint recognition light source. The control chip, the fingerprint identification sensor and the fingerprint identification light source are located under the glass cover plate 310. The control chip is electrically connected with the fingerprint identification sensor. The control chip is electrically connected with the fingerprint identification light source. The control chip controls the light emitting of the fingerprint identification light source. The light of the fingerprint identification light source irradiates the fingerprint identification area 311. When a finger contacts the fingerprint identification area 311 on the glass cover 310, the finger reflects light at the fingerprint identification area 311. The control chip controls the fingerprint identification sensor to receive the light of the finger and generate an electric signal. The control chip acquires fingerprint information according to the electric signal.
In one embodiment of the present invention, the fingerprint recognition device 200 is used for optical fingerprint recognition. The fingerprint identification device 200 comprises a control chip and a fingerprint identification sensor. The control chip and the fingerprint recognition sensor are positioned under the glass cover plate 310. The control chip is electrically connected with the fingerprint identification sensor. The terminal device 300 further includes a display device 320, such as a liquid crystal display device or an organic light emitting display device. The display device 320 is located under the glass cover plate 310. The display device 320 realizes light emission using a liquid crystal optical effect or an organic light emitting diode. The light of the display device 320 illuminates the fingerprint identification area 311. When a finger contacts the fingerprint identification area 311 on the glass cover 310, the finger reflects light at the fingerprint identification area 311. The control chip controls the fingerprint identification sensor to receive the light of the finger and generate an electric signal. The control chip acquires fingerprint information according to the electric signal.
Fig. 4 is a schematic structural diagram of another terminal device according to an embodiment of the present invention; fig. 5 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
As shown in FIG. 4, in one embodiment of the present invention, the fingerprint recognition device 200 is used for capacitive fingerprint recognition. The fingerprint recognition device 200 includes a control chip and a self-contained electrode 240. The control chip is located under the glass cover plate 310. The plurality of self-contained electrodes 240 are arranged in a matrix and are located under the fingerprint identification area 311. The control chip is electrically connected to the self-contained electrode 240. The self-capacitance electrode 240 and the ground electrode form a self-capacitance. When a finger touches the fingerprint identification region 311 on the glass cover 310, the self-capacitance of the self-capacitance electrode 240 and the ground electrode changes. The control chip detects the self-capacitance through the self-capacitance electrode 240. And the control chip acquires fingerprint information according to the self-capacitance.
As shown in FIG. 5, in one embodiment of the present invention, the fingerprint recognition device 200 is used for capacitive fingerprint recognition. The fingerprint recognition device 200 includes a control chip, a driving electrode 250, and a sensing electrode 260. The control chip is located under the glass cover plate 310. The plurality of driving electrodes 250 extend in a longitudinal direction. The plurality of sensing electrodes 260 extend in a lateral direction. The driving electrode 250 crosses the sensing electrode 260 and is positioned under the fingerprint recognition area 311. The driving electrode 250 and the sensing electrode 260 form a mutual capacitance. When a finger touches the fingerprint identification area 311 on the glass cover plate 310, the mutual capacitance of the driving electrode 250 and the sensing electrode 260 changes. When the control chip transmits a driving signal through the driving electrode 250, the control chip detects a mutual capacitance through the sensing electrode 260. And the control chip acquires fingerprint information according to the mutual capacitance.
In one embodiment of the present invention, the glass cover plate 310 has a concave-convex pattern 312 at the fingerprint recognition area 311. The non-fingerprint identification area on the glass cover plate 310 has no concave-convex pattern. The feeling of a finger touching the fingerprint recognition area 311 on the glass cover 310 is different from the feeling of a finger touching the non-fingerprint recognition area on the glass cover 310. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the concave-convex pattern 312 of the glass cover 310 at the fingerprint identification area 311 is a microscopic pattern, the concave-convex pattern 312 cannot be seen by the naked eye of the end user, the display of the terminal device 300 is not affected by the concave-convex pattern 312, and the appearance of the terminal device 300 is substantially maintained as it is.
As shown in fig. 2 and 3, the area of the fingerprint identification region 311 is greater than or equal to 1 mm.
In one embodiment of the present invention, the area of fingerprint identification region 311 is greater than or equal to 1 square millimeter. The glass cover 310 has a concave-convex pattern 312 at a fingerprint identification area 311. When the finger of the end user touches the fingerprint recognition area 311 having an area greater than or equal to 1 mm square on the glass cover 310, the end user easily perceives the concave-convex pattern 312 of the fingerprint recognition area 311 on the glass cover 310. The non-fingerprint identification area on the glass cover plate 310 has no concave-convex pattern. The feeling of a finger touching the fingerprint recognition area 311 on the glass cover 310 is significantly different from the feeling of a finger touching the non-fingerprint recognition area on the glass cover 310. The end user can easily determine the fingerprint recognition area 311 according to the feeling of touching the glass cover 310 with a finger. When the finger of the end user is placed on the fingerprint identification region 311 having an area greater than or equal to 1 mm square, the fingerprint identification device 200 acquires sufficient fingerprint information, and the terminal apparatus 300 accurately implements an unlocking function or other functions by sufficiently comparing the fingerprint information.
As shown in fig. 2 and 3, the concave-convex pattern 312 includes bumps 312A.
In one embodiment of the present invention, the concave-convex pattern 312 of the glass cover plate 310 at the fingerprint identification area 311 includes bumps 312A. The contact area of the finger with the fingerprint identification region 311 on the glass cover plate 310 is large. The feeling of the finger touching the fingerprint identification area 311 on the glass cover plate 310 is rough. The non-fingerprint identification area on the glass cover plate 310 is free of bumps. The contact area of the finger with the non-fingerprint recognition area on the glass cover plate 310 is small. The feeling of a finger touching the non-fingerprint recognition area on the glass cover plate 310 is smooth. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the bumps 312A of the glass cover 310 at the fingerprint identification area 311 are microscopic patterns, the bumps 312A cannot be seen by the naked eye of the terminal user, the display of the terminal device 300 is not affected by the bumps 312A, and the appearance of the terminal device 300 is substantially maintained as it is.
Fig. 6 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
As shown in fig. 6, the concave-convex pattern 312 includes pits 312B.
In one embodiment of the present invention, the concave-convex pattern 312 of the glass cover plate 310 at the fingerprint identification area 311 includes a pit 312B. The contact area of the finger with the fingerprint recognition area 311 on the glass cover plate 310 is small. The feeling of the finger touching the fingerprint identification area 311 on the glass cover plate 310 is smooth. The non-fingerprint identification area on the glass cover plate 310 is free of pits. The contact area of the finger with the non-fingerprint recognition area on the glass cover plate 310 is large. The feeling of a finger touching the non-fingerprint recognition area on the glass cover plate 310 is rough. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the bumps 312A of the glass cover 310 at the fingerprint identification area 311 are microscopic patterns, the bumps 312A cannot be seen by the naked eye of the terminal user, the display of the terminal device 300 is not affected by the bumps 312A, and the appearance of the terminal device 300 is substantially maintained as it is.
Fig. 7 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
As shown in fig. 7, the concave-convex pattern 312 includes bumps 312A and pits 312B.
In one embodiment of the present invention, the concave-convex pattern 312 of the glass cover 310 at the fingerprint identification area 311 includes bumps 312A and pits 312B. The feeling of the finger touching the fingerprint recognition area 311 on the glass cover plate 310 is not uniform. The non-fingerprint identification area on the glass cover plate 310 is free of bumps and pits. The feeling of the finger touching the non-fingerprint recognition area on the glass cover plate 310 is uniform. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the bumps 312A and the pits 312B of the glass cover 310 at the fingerprint identification area 311 are microscopic patterns, the bumps 312A and the pits 312B cannot be seen by the naked eye of the terminal user, the display of the terminal device 300 is not affected by the bumps 312A and the pits 312B, and the appearance of the terminal device 300 is substantially maintained as it is.
As shown in fig. 3 and 6, the size of the bump 312A or the pit 312B is less than 50 μm.
In one embodiment of the present invention, the size of the bumps 312A of the glass cover 310 at the fingerprint identification area 311 is less than 50 microns, or the size of the pits 312B of the glass cover 310 at the fingerprint identification area 311 is less than 50 microns. On the one hand, the size of the bumps 312A or the pits 312B of the glass cover 310 at the fingerprint identification area 311 is small, the bumps 312A or the pits 312B cannot be seen by the naked eye of the terminal user, the display of the terminal device 300 is not affected by the bumps 312A or the pits 312B, and the appearance of the terminal device 300 is substantially maintained as it is. On the other hand, although the size of the convex points 312A or the concave pits 312B of the glass cover 310 at the fingerprint identification area 311 is small, the non-fingerprint identification area on the glass cover 310 has no concave-convex pattern, and the feeling of a finger touching the fingerprint identification area 311 on the glass cover 310 is different from the feeling of a finger touching the non-fingerprint identification area on the glass cover 310. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information.
As shown in fig. 3 and 6, the pitch of any two adjacent bumps 312A or pits 312B is less than 1 mm and greater than 50 μm.
In one embodiment of the present invention, the spacing between any two adjacent bumps 312A of the glass cover 310 at the fingerprint identification area 311 is less than 1 mm, or the spacing between any two adjacent pits 312B of the glass cover 310 at the fingerprint identification area 311 is less than 1 mm, for example, 100 to 200 microns. In one aspect, the glass cover 310 has a dense concentration of protrusions 312A or depressions 312B at the fingerprint identification region 311, and the non-fingerprint identification region on the glass cover 310 has no uneven pattern, and the feeling of a finger touching the fingerprint identification region 311 on the glass cover 310 is different from the feeling of a finger touching the non-fingerprint identification region on the glass cover 310. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. On the other hand, although the bumps 312A or the pits 312B of the glass cover 310 at the fingerprint identification area 311 are dense, the bumps 312A or the pits 312B are small in size, the bumps 312A or the pits 312B cannot be seen by the naked eye of the end user, the display of the terminal device 300 is not affected by the bumps 312A or the pits 312B, and the appearance of the terminal device 300 is substantially maintained as it is. In addition, the spacing between any two adjacent bumps 312A or pits 312B is greater than 50 microns, ensuring that the glass cover plate 310 has high light transmittance.
Fig. 8 is a schematic structural diagram of another terminal device according to an embodiment of the present invention; fig. 9 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
As shown in fig. 2, 8 and 9, the bumps 312A or the pits 312B may have any one or more of a circular shape, an oval shape and a square shape.
In one embodiment of the present invention, the bumps 312A or the pits 312B may exhibit any one or more of a circular shape, an oval shape, and a square shape. Circular, oval, square bumps 312A or dimples 312B are easy to manufacture. The glass cover 310 has a circular, oval, square bump 312A or a depression 312B at the fingerprint identification area 311. The non-fingerprint identification area on the glass cover plate 310 is free of rounded, oval, square bumps 312A or dimples 312B. The feeling of a finger touching the fingerprint recognition area 311 on the glass cover 310 is different from the feeling of a finger touching the non-fingerprint recognition area on the glass cover 310. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information.
Fig. 10A and 10B are schematic structural diagrams of another terminal device according to an embodiment of the present invention.
As shown in fig. 10A, 10B, the bump 312A or the pit 312B has a rounded edge.
In one embodiment of the present invention, the bumps 312A or the pits 312B of the glass cover 310 at the fingerprint identification area 311 have rounded edges. The bumps 312A or the pits 312B of the glass cover 310 at the fingerprint identification area 311 have no tips. When the finger of the end user touches the fingerprint identification area 311 of the glass cover 310, the feeling of the finger touching the fingerprint identification area 311 on the glass cover 310 is gentle, and the end user does not have a sharp feeling.
Fig. 11 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
As shown in fig. 11, the bumps 312A or the pits 312B are not uniformly arranged.
In one embodiment of the present invention, the bumps 312A or the pits 312B of the glass cover 310 at the fingerprint identification area 311 are not uniformly arranged. The terminal device 300 includes a display device 320. The display device 320 includes an array of pixels. The arrangement of pixels in the pixel array is uniform. The uneven arrangement of the bumps 312A or the pits 312B and the even arrangement of the pixels in the pixel array make the terminal device 300 display clear so as to prevent the uneven arrangement of the bumps 312A or the pits 312B and the even arrangement of the pixels in the pixel array from causing optical interference to generate moire fringes.
FIG. 12 is a process diagram of a method for manufacturing a fingerprint identification device according to an embodiment of the present invention.
As shown in fig. 2, 3, and 12, a method 400 of manufacturing a fingerprint identification device is used to manufacture the fingerprint identification device 200; the fingerprint identification device 200 is used for the terminal equipment 300; the method 400 of manufacturing a fingerprint recognition device includes: step S410, providing the glass cover plate 310 comprising the fingerprint identification area 311; step S420, forming a photoresist layer PR on the glass cover plate 310 by deposition; step S430, patterning the photoresist layer PR by etching; step S440, forming a concave-convex pattern at the fingerprint identification area 311 by etching the patterned glass cover plate 310; step S450, removing the photoresist layer PR by cleaning; wherein, the fingerprint identification device 200 is located at one side of the glass cover plate 310, and the fingerprint identification device 200 is used for identifying the fingerprint on the fingerprint identification area 311.
In one embodiment of the present invention, the glass cover plate 310 has a concave-convex pattern 312 at the fingerprint recognition area 311. The non-fingerprint identification area on the glass cover plate 310 has no concave-convex pattern. The feeling of a finger touching the fingerprint recognition area 311 on the glass cover 310 is different from the feeling of a finger touching the non-fingerprint recognition area on the glass cover 310. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the concave-convex pattern 312 of the glass cover 310 at the fingerprint identification area 311 is a microscopic pattern, the concave-convex pattern 312 cannot be seen by the naked eye of the end user, the display of the terminal device 300 is not affected by the concave-convex pattern 312, and the appearance of the terminal device 300 is substantially maintained as it is.
As shown in fig. 2, 3 and 12, in the method 400 for manufacturing a fingerprint recognition device, the concave-convex pattern includes a bump or a pit or both a bump and a pit.
In one embodiment of the present invention, the concave-convex pattern 312 of the glass cover 310 at the fingerprint identification area 311 includes bumps or pits or both bumps and pits. The contact area of the finger with the fingerprint recognition area 311 on the glass cover plate 310 is small. The feeling of the finger touching the fingerprint identification area 311 on the glass cover plate 310 is smooth. The non-fingerprint identification area on the glass cover plate 310 is free of pits. The contact area of the finger with the non-fingerprint recognition area on the glass cover plate 310 is large. The feeling of a finger touching the non-fingerprint recognition area on the glass cover plate 310 is rough. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the bumps or pits or the bumps and the pits of the glass cover 310 at the fingerprint identification area 311 are microscopic patterns, the bumps or the pits or the bumps and the pits cannot be seen by the naked eye of the terminal user, the display of the terminal device 300 is not affected by the bumps or the pits or the bumps and the pits, and the appearance of the terminal device 300 is basically kept as it is.
As shown in fig. 2 and 3, the terminal device 300 includes a fingerprint recognition device 200 and a glass cover plate 310; the glass cover 310 includes a fingerprint identification area 311; the fingerprint identification device 200 is positioned on one side of the glass cover plate 310, and the fingerprint identification device 200 is used for identifying fingerprints on the fingerprint identification area 311; the glass cover 310 has a concave-convex pattern 312 at a fingerprint identification area 311.
In one embodiment of the present invention, the glass cover plate 310 has a concave-convex pattern 312 at the fingerprint recognition area 311. The non-fingerprint identification area on the glass cover plate 310 has no concave-convex pattern. The feeling of a finger touching the fingerprint recognition area 311 on the glass cover 310 is different from the feeling of a finger touching the non-fingerprint recognition area on the glass cover 310. When the end user operates the terminal device 300, the end user does not need to look at the glass cover 310, touches the glass cover 310 with only a finger, and determines the fingerprint identification area 311 according to the feeling of the finger touching the glass cover 310. Then, the end user places a finger on the fingerprint identification area 311, the fingerprint identification device 200 acquires fingerprint information, and the terminal device 300 implements an unlocking function or other functions by comparing the fingerprint information. In addition, the concave-convex pattern 312 of the glass cover 310 at the fingerprint identification area 311 is a microscopic pattern, the concave-convex pattern 312 cannot be seen by the naked eye of the end user, the display of the terminal device 300 is not affected by the concave-convex pattern 312, and the appearance of the terminal device 300 is substantially maintained as it is.
In summary, the present invention provides a fingerprint identification apparatus and a terminal device. The fingerprint identification device is used for the terminal equipment; the terminal equipment comprises a glass cover plate; the glass cover plate comprises a fingerprint identification area; the fingerprint identification device is positioned on one side of the glass cover plate and is used for identifying fingerprints on the fingerprint identification area; the glass cover plate has a concave-convex pattern at the fingerprint identification area. In the present invention, the non-fingerprint identification area on the glass cover plate has no concave-convex pattern. The feeling of a finger touching a fingerprint identification area on the glass cover plate is different from the feeling of a finger touching a non-fingerprint identification area on the glass cover plate. When the terminal user operates the terminal equipment, the terminal user does not need to watch the glass cover plate, only touches the glass cover plate with fingers, and determines the fingerprint identification area according to the feeling of touching the glass cover plate with the fingers. Therefore, the terminal user places a finger on the fingerprint identification area, the fingerprint identification device acquires fingerprint information, and the terminal equipment realizes an unlocking function or other functions by comparing the fingerprint information.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (22)
1. A fingerprint identification device is characterized in that the fingerprint identification device is used for a terminal device;
the terminal equipment comprises a glass cover plate;
the glass cover plate comprises a fingerprint identification area;
the fingerprint identification device is positioned on one side of the glass cover plate and is used for identifying a fingerprint on the fingerprint identification area;
the glass cover plate has a concave-convex pattern at the fingerprint identification area.
2. The fingerprint recognition device of claim 1, wherein the area of the fingerprint recognition area is greater than or equal to 1 square millimeter.
3. The fingerprint recognition device of claim 1, wherein the relief pattern includes raised dots.
4. The fingerprint recognition device of claim 1, wherein the relief pattern comprises dimples.
5. The fingerprint recognition device of claim 1, wherein the relief pattern comprises bumps and pits.
6. The fingerprint recognition device of claim 3 or 4, wherein the size of the bumps or pits is less than 50 microns.
7. The fingerprint recognition device of claim 3 or 4, wherein a pitch between any two adjacent bumps or pits is less than 1 mm and greater than 50 μm.
8. The fingerprint recognition device according to claim 3 or 4, wherein the bumps or the pits exhibit any one or more of a circle, an ellipse, and a square.
9. The fingerprint recognition device of claim 3 or 4, wherein the bumps or dimples have rounded edges.
10. The fingerprint recognition device of claim 3 or 4, wherein the bumps or the pits are arranged unevenly.
11. The terminal equipment is characterized by comprising a fingerprint identification device and a glass cover plate;
the glass cover plate comprises a fingerprint identification area;
the fingerprint identification device is positioned on one side of the glass cover plate and is used for identifying a fingerprint on the fingerprint identification area;
the glass cover plate has a concave-convex pattern at the fingerprint identification area.
12. The terminal device of claim 11, wherein the fingerprint identification region has an area greater than or equal to 1 square millimeter.
13. A terminal device according to claim 11, characterized in that the relief pattern comprises bumps.
14. A terminal device according to claim 11, characterized in that the relief pattern comprises pits.
15. A terminal device according to claim 11, characterized in that the relief pattern comprises bumps and pits.
16. A terminal device according to claim 13 or 14, characterized in that the size of the bumps or pits is smaller than 50 micrometer.
17. A terminal device according to claim 13 or 14, characterized in that the pitch of any two adjacent bumps or pits is smaller than 1 mm and larger than 50 μm.
18. A terminal device according to claim 13 or 14, characterized in that the bumps or the pits exhibit any one or more of a circular shape, an oval shape, a square shape.
19. A terminal device according to claim 13 or 14, characterized in that the bumps or the pits have rounded edges.
20. A terminal device according to claim 13 or 14, characterized in that the bumps or the pits are arranged unevenly.
21. A manufacturing method of a fingerprint identification device is characterized in that the fingerprint identification device is used for terminal equipment;
the manufacturing method of the fingerprint identification device comprises the following steps:
providing a glass cover plate comprising a fingerprint identification area;
forming a photoresist layer on the glass cover plate by deposition;
patterning the photoresist layer by etching;
forming a concave-convex pattern at the fingerprint identification area by etching and patterning the glass cover plate;
removing the photoresist layer by cleaning;
wherein, fingerprint identification device is located one side of glass apron, fingerprint identification device is used for discerning the fingerprint on the fingerprint identification area.
22. The method of claim 21, wherein the relief pattern comprises bumps or pits or bumps and pits.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/106644 WO2021051343A1 (en) | 2019-09-19 | 2019-09-19 | Fingerprint identification device, terminal apparatus, and method for manufacturing fingerprint identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110892402A true CN110892402A (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980002116.XA Pending CN110892402A (en) | 2019-09-19 | 2019-09-19 | Fingerprint identification device, terminal equipment and manufacturing method of fingerprint identification device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110892402A (en) |
| WO (1) | WO2021051343A1 (en) |
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Also Published As
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| WO2021051343A1 (en) | 2021-03-25 |
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