CN210534811U

CN210534811U - Glass pastes structure of supplementary ultrasonic wave fingerprint response

Info

Publication number: CN210534811U
Application number: CN201921995676.3U
Authority: CN
Inventors: 林家豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-04
Filing date: 2019-11-18
Publication date: 2020-05-15
Anticipated expiration: 2029-11-18
Also published as: TWM582162U

Abstract

The utility model provides a glass pastes structure of supplementary ultrasonic wave fingerprint response, is equipped with the two-sided glue film of frame form at glass membrane component bottom periphery and supplies to paste the screen periphery of locating the cell-phone to form the clearance between this glass membrane component central zone and this screen, have the ultrasonic wave fingerprint induction zone on this screen, paste between this glass membrane component and this ultrasonic wave fingerprint induction zone and establish the conduction film that holds in this clearance; by the structure, ultrasonic signals are transmitted to the upper part of the glass paste by the aid of the solid-state conductive film to sense fingerprints of users, and the practical effect that the signals are not weakened is achieved.

Description

Glass pastes structure of supplementary ultrasonic wave fingerprint response

The present application claims priority from taiwan patent office, application No. 108202656, entitled "structure for ultrasonic fingerprint sensing assisted by glass sticker" filed on 04.03.2019, which is incorporated herein by reference in its entirety.

Technical Field

The utility model relates to a fingerprint response structure field especially relates to a structure of supplementary ultrasonic wave fingerprint response of glass subsides.

Background

Generally, smart phones or tablet computers, or wearable devices (such as smart watches and wristbands) have screens (especially, mobile phone users are more common), in order to protect the screens and avoid breakage or scratches caused by collision and friction, many users may choose to attach the surface of the mobile phone screens to a screen protection sticker, especially a glass sticker, which is more common and has better protection capability. Moreover, because of the demands of consumers, the screens of mobile phones are becoming larger and larger, and even in order to improve the visual effect of the screens and maintain better hand-holding feeling, not only the frames of the mobile phone bodies are changed into various geometric shapes, but also the edges of the screen panels are seamlessly connected with the frames by adopting non-planar designs (such as arc surfaces), and correspondingly, the edges and the peripheries of the glass pastes also need to be designed into shapes corresponding to the screens, so that the edges of the screens of the mobile phones are protected comprehensively. The difficulty is that the glass paste is difficult to manufacture and completely conforms to the shape of the surface of the screen, so that some manufacturers develop a mode of bonding the periphery of the glass paste with the screen to avoid the problem that the glass paste cannot be completely and closely attached with the screen to generate bubbles; then, with the development of the technology of mobile phones, an ultrasonic fingerprint identifier arranged under a screen is developed, the ultrasonic fingerprint identification technology is mainly characterized in that the screen is pressed, sound waves are reflected to a fingerprint sensor under the screen, and finally a 3D fingerprint identification image is made to be unlocked, compared with the prior capacitive fingerprint identification and optical fingerprint identification, the ultrasonic fingerprint identification has the advantages that the ultrasonic fingerprint identification is not directly contacted, is not influenced by wet fingers and dirt, and the identification success rate and the safety are greatly improved; referring to the drawings of fig. 1-2, a glass sticker 10 in the prior art is constructed by disposing a frame-shaped double-sided adhesive layer 12 on the bottom periphery of a glass film member 11, the glass film member 11 including a glass layer 111; an explosion-proof film 112 covering the bottom surface of the glass layer 111; an adhesive layer 113 interposed between the glass layer 111 and the explosion-proof film 112; and the frame-shaped printing layer 114 arranged on the periphery of the explosion-proof membrane 112, and the top surface of the double-sided adhesive layer 12 is adhered to the bottom surface of the printing layer 114, the bottom surface of the double-sided adhesive layer 12 is adhered to the periphery of the screen 2 of the mobile phone 1, and the glass membrane component 11 is made of hard material, so that a gap 13 is formed between the central area of the glass membrane component 11 and the screen 2, therefore, the glass adhesive 10 does not need to be completely adhered to the screen 2, and the problem of generating bubbles due to the fact that the surface shapes of the tolerance are inconsistent is avoided; however, in the above-mentioned structure of the glass sticker 10, when a user presses on the glass sticker 10 corresponding to the ultrasonic fingerprint sensing area 14 of the screen 2, the ultrasonic signal 151 emitted by the ultrasonic fingerprint identifier 15 disposed under the screen 2 needs to penetrate through the screen 2 of the mobile phone 1 and also needs to penetrate through the gap 13 (i.e. air layer) and the glass film member 11, so that the ultrasonic signal 151 needs to penetrate through a higher thickness to reflect and bounce back to the ultrasonic fingerprint identifier 15 from the fingerprint of the user, so as to capture all ridges (fingerprint protrusions) and valleys (fingerprint valleys) on the fingerprint in 3D, but in fact, the penetrating power of the ultrasonic signal 151 is limited, and it is known that the transmission medium of the acoustic wave is solid state > liquid state > gas state, when the ultrasonic signal 151 passes through the gap 13 (when the air layer, the signal is weakened, so that when the user presses on the ultrasonic fingerprint sensing area 14 through the glass sticker 10 to unlock the mobile phone 1, the recognition result is affected, and the problems of non-inductive unlocking and inductive error are often occurred, which is a problem to be improved urgently.

In view of the above, there is a need to provide a novel structure of glass paste assisted with ultrasonic fingerprint sensing to solve or at least alleviate the above technical drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a structure of supplementary ultrasonic wave fingerprint response of glass subsides to ultrasonic wave fingerprint identification ware transmission signal is weak among the solution prior art, the technical problem that the discernment degree is low.

The utility model provides a glass pastes structure of supplementary ultrasonic wave fingerprint response is equipped with the screen periphery of locating the cell-phone at the double-sided adhesive layer confession subsides of frame form of glass membrane component bottom periphery to make this glass membrane component central zone with form the clearance between the screen, ultrasonic wave fingerprint induction zone has on the screen, a serial communication port, the glass membrane component with paste between the ultrasonic wave fingerprint induction zone establish the holding in conduction film in the clearance.

Preferably, the glass film component comprises a glass layer, an explosion-proof membrane covering the bottom surface of the glass layer, an adhesive layer between the glass layer and the explosion-proof membrane, and a frame-shaped printing layer arranged on the periphery of the explosion-proof membrane, wherein the top surface of the double-sided adhesive layer is adhered to the bottom surface of the printing layer.

Preferably, the area of the conductive film is set to be greater than or equal to the area of the ultrasonic fingerprint sensing area.

Preferably, the thickness of the conductive film is set to be between 0.5mm and 1 mm.

Preferably, the conductive film is provided in a circular shape or the same shape as the ultrasonic fingerprint sensing area.

Preferably, the conductive film is made of an OCA acrylic adhesive material.

The above technical scheme of the utility model, glass pastes supplementary ultrasonic wave fingerprint response's structure, and the double-sided adhesive layer that is equipped with the frame form at glass membrane component bottom periphery supplies to paste the screen periphery of locating the cell-phone to form the clearance between this glass membrane component central authorities region and the screen, have the ultrasonic wave fingerprint induction zone on the screen, paste between glass membrane component and the ultrasonic wave fingerprint induction zone and establish the conduction film of holding in the clearance. Through above-mentioned structure, ultrasonic signal is assisted by solid-state conduction film and is transmitted the response user fingerprint to glass subsides top, reaches the practical efficiency that the signal is indehiscent, has improved the degree of discernment of fingerprint.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded perspective view of an ultrasonic fingerprint sensor and a mobile phone in the prior art;

FIG. 2 is a cross-sectional view of a structure of an ultrasonic fingerprint sensor and a mobile phone according to the prior art;

fig. 3 is an exploded perspective view of the structure of the glass sticker for assisting ultrasonic fingerprint sensing in combination with a mobile phone according to the embodiment of the present invention;

fig. 4 is a perspective sectional view of the structure of the glass sticker assisting ultrasonic fingerprint sensing and the mobile phone combination.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Mobile phone	2	Screen
10	Glass paste	11	Glass film member
				111	Glass layer	112	Explosion-proof membrane
113	Adhesive layer	114	Printing layer
				12	Double-sided adhesive layer	13	Gap
14	Ultrasonic fingerprint induction area	15	Ultrasonic fingerprint identification area
				151	Ultrasonic signals	20	Conductive film

The purpose of the present invention, its functional features and advantages will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions of the present invention between the various embodiments can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and the present invention is not within the protection scope of the present invention.

Referring to fig. 3 to 4, in a structure of glass paste for assisting ultrasonic fingerprint sensing, a frame-shaped double-sided adhesive layer 12 is disposed on the bottom periphery of a glass film member 11, and the glass film member 11 includes a glass layer 111; an explosion-proof film 112 covering the bottom surface of the glass layer 111; an adhesive layer 113 interposed between the glass layer 111 and the explosion-proof membrane 112; the frame-shaped printing layer 114 is arranged on the periphery of the explosion-proof film 112, the top surface of the double-sided adhesive layer 12 is adhered to the bottom surface of the printing layer 114, the bottom surface of the double-sided adhesive layer 12 is adhered to the periphery of the screen 2 of the mobile phone 1, so that a gap 13 is formed between the central area of the glass film member 11 and the screen 2, the screen 2 is provided with an ultrasonic fingerprint sensing area 14, and a conducting film 20 accommodated in the gap 13 is adhered between the glass film member 11 and the ultrasonic fingerprint sensing area 14; with the above structure, the ultrasonic signal 151 is transmitted to the upper side of the glass sticker 10 by the solid-state conductive film 20 to sense the fingerprint of the user, so as to achieve the practical effect of signal attenuation.

The composition and action of the above embodiments are explained in detail as follows: referring to fig. 3 to 4, the ultrasonic fingerprint identification technology is a 3D acoustic sensing technology, and the working principle thereof is to reflect and bounce acoustic waves from the skin to an induction recognizer, an ultrasonic reader can perform 3D capture on all ridges (fingerprint protrusions) and valleys (fingerprint depressions) constituting the skin, when a user finger touches the ultrasonic fingerprint induction area 14, the ultrasonic fingerprint identifier 15 under the screen 2 can send out ultrasonic signals 151 to be applied to the skin of the finger, and when the ultrasonic signals 151 bounce back to the ultrasonic fingerprint identifier 15, the ultrasonic fingerprint identifier 15 can map the fingerprint according to the acoustic pressure data bouncing from the skin, specifically, the ultrasonic fingerprint identifier 15 calculates different voltage levels and draws data according to the ridges and valleys of the user fingerprint, thereby forming a 3D image with rich details of the fingerprint. The conductive film 20 of the present invention is a solid film made of acrylic Adhesive material of OCA (optical Clear Adhesive) with an area larger than or equal to the area of the ultrasonic fingerprint sensing area 14 to sense the fingerprint of the user, and the shape thereof can be circular or the same as the shape of the ultrasonic fingerprint sensing area 14, and the thickness thereof is preferably between about 0.5mm and 1mm, but not limited thereto. When a user presses the ultrasonic fingerprint sensing area 14 of the screen 2 through the glass station 10 to unlock the mobile phone 1, the solid-state conductive film 20 assists in transmitting the ultrasonic signal 151 to the upper side of the glass sticker 10 to sense the fingerprint of the user, so as to achieve the practical effect of signal weakness.

The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the technical conception of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields.

Claims

1. A glass-attached ultrasonic fingerprint induction structure is characterized in that a frame-shaped double-sided adhesive layer is arranged on the periphery of the bottom of a glass film component and is attached to the periphery of a screen of a mobile phone, so that a gap is formed between the central area of the glass film component and the screen, and an ultrasonic fingerprint induction area is arranged on the screen.

2. The ultrasonic fingerprint sensing structure of claim 1, wherein the glass film member comprises a glass layer, an explosion-proof film covering the bottom surface of the glass layer, an adhesive layer between the glass layer and the explosion-proof film, and a frame-shaped printing layer disposed on the periphery of the explosion-proof film, and the top surface of the double-sided adhesive layer is adhered to the bottom surface of the printing layer.

3. The structure of claim 1, wherein the area of the conductive film is set to be greater than or equal to the area of the ultrasonic fingerprint sensing area.

4. The structure of claim 1, wherein the thickness of the conductive film is set to be between 0.5mm and 1 mm.

5. The structure of claim 1, wherein the conductive film is circular or the same shape as the ultrasonic fingerprint sensing area.

6. The ultrasonic fingerprint sensor structure of claim 1, wherein the conductive film is made of an acrylic adhesive material such as OCA.