WO2020181627A1

WO2020181627A1 - Toughened film

Info

Publication number: WO2020181627A1
Application number: PCT/CN2019/083912
Authority: WO
Inventors: 施红兵
Original assignee: 深圳比途科技有限公司
Priority date: 2019-03-13
Filing date: 2019-04-23
Publication date: 2020-09-17

Abstract

Provided is a toughened film (1) for electronic apparatus with an ultrasonic fingerprint recognition device, wherein the toughened film (1) includes a first release film, a second release film, and a toughened film body (2) disposed between the first release film and the second release film, the toughened film body (2) includes an explosion-proof layer (22), a glass layer (21) connected between the explosion-proof layer (22) and the first release film, and a first glue coating layer (23) connected between the explosion-proof layer (22) and the second release film; the toughened film (1) is provided with a penetration hole (24) corresponding to the ultrasonic fingerprint recognition device; the toughened film (1) enables ultrasonic waves emitted by the electronic apparatus with an ultrasonic fingerprint recognition device to penetrate the toughened film (1) to make the ultrasonic fingerprint unlocking.

Description

A tempered film

Technical field

This application belongs to the technical field of electronic equipment accessories, and more specifically, relates to a tempered film.

Background technique

Tempered film is an electronic equipment accessory derived to protect electronic equipment. Glass has quite good wear resistance and is very hard. Tempered film is actually a kind of prestressed glass. In order to improve the strength of glass, chemical or physical In the method, a compressive stress is formed on the surface of the glass. When the glass is subjected to external force, the surface stress is first offset to improve the carrying capacity, thereby protecting the screen of the electronic device.

Due to the continuous advancement of electronic equipment, the fingerprint unlocking function has undergone new changes. By installing an ultrasonic fingerprint recognition device in the existing mobile phone screen, using ultrasonic to read the user’s fingerprints to unlock the mobile phone, this fundamentally solves the problem. There is a disadvantage in technology that the sensitivity of the fingerprint unlocking function is low. However, the ultrasonic waves emitted by the ultrasonic fingerprint identification device cannot penetrate the tempered film in the prior art, so that the user cannot normally use the ultrasonic fingerprint identification device to unlock the fingerprint.

technical problem

The purpose of this application is to provide a tempered film to solve the technical problem in the prior art that ultrasonic waves cannot penetrate the tempered film to identify fingerprints and unlock the ultrasonic fingerprint.

Technical solutions

In order to achieve the above objective, the technical solution adopted in this application is to provide a tempered film for electronic equipment with an ultrasonic fingerprint recognition device. The tempered film includes a first release film, a second release film, and two The toughened film body between the two, the toughened film body includes an explosion-proof layer, a glass layer connected between the explosion-proof layer and the first release film, and a first glue connected between the explosion-proof layer and the second release film Layer; The toughened film is provided with a penetration hole corresponding to the ultrasonic fingerprint identification device.

Further, the penetration hole is filled with an ultrasonic penetration film.

Further, the ultrasonic penetrating film is a plastic film.

Further, the ultrasonic penetrating film includes a penetrating layer and a second glue layer, and a third release film is provided on the second glue layer.

Further, the edges of the first release film, the second release film and the third release film are all protrudingly formed with peeling portions.

Further, a plastic frame is fixedly connected to the outer periphery of the toughened film body.

Further, the first glue layer includes an optically clear adhesive glue layer and a silicon glue layer, the optically clear adhesive glue layer and the explosion-proof layer are fixedly connected, the silicon glue layer and the electronic device Fixed connection.

Further, a through hole corresponding to the horn hole of the electronic device is opened on the toughened film, and the through hole is provided through the toughened film.

Beneficial effect

The beneficial effects of the present application: Compared with the prior art, the tempered film of the present application is provided with penetration holes on the tempered film body at the corresponding position of the ultrasonic fingerprint identification device, so that the original function of the tempered film is not affected. The ultrasonic wave emitted by the ultrasonic fingerprint recognition device on the device can penetrate the toughened film to realize the function of ultrasonic fingerprint recognition and unlock.

Description of the drawings

Fig. 1 is a schematic diagram 1 of a three-dimensional structure of a tempered film provided by an embodiment of the application;

FIG. 2 is a schematic diagram of an exploded structure of a tempered film provided by an embodiment of the application;

Fig. 3 is a second schematic diagram of the three-dimensional structure of the tempered film provided by the embodiment of the application;

Fig. 4 is a partial enlarged view of A in the tempered film shown in Fig. 3;

Fig. 5 is a partial enlarged view of B in the tempered film shown in Fig. 3.

Reference signs include:

1 1	： :	钢化膜 Tempered film	2 2	： :	钢化膜本体 Tempered film body
21 twenty one	： :	玻璃层 Glass layer	22 twenty two	： :	防爆层 Explosion-proof layer
23 twenty three	： :	第一涂胶层 First coating layer	24 twenty four	： :	穿透孔 Penetration hole
3 3	： :	超声波穿透膜 Ultrasonic penetration membrane	4 4	： :	塑料边框 Plastic frame

Embodiments of the invention

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to FIGS. 1 to 5 are exemplary, and are intended to explain the application, and should not be understood as a limitation to the application.

In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, not It indicates or implies that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "multiple" means two or more than two, unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Please refer to FIG. 1 and FIG. 5 together. Now, the tempered film 1 provided in this embodiment will be described. The tempered film 1 is used for electronic equipment with an ultrasonic fingerprint recognition device. The tempered film 1 includes a first release film, a second release film, and a tempered film body 2 arranged between the two. The tempered film body 2 includes explosion-proof Layer 22, the glass layer 21 connected between the explosion-proof layer and the first release film, the first glue layer 23 connected between the explosion-proof layer 22 and the second release film; the toughened film 1 is provided with an ultrasonic fingerprint Identify the corresponding through hole 24 of the device.

Compared with the prior art, the tempered film 1 provided by this embodiment provides penetration holes 24 on the tempered film body 2 at the corresponding position of the ultrasonic fingerprint identification device, which does not affect the originality of the tempered film 1. On the basis of some functions, the ultrasonic wave emitted by the ultrasonic fingerprint identification device on the electronic device can penetrate the tempered film 1 to realize the function of ultrasonic fingerprint identification and unlocking.

Please refer to FIGS. 1 to 3 together. As a specific implementation of the tempered film 1 provided in this embodiment, the tempered film 1 includes a first release film, a second release film, and a tempered film disposed between the two. The film body 2 is applied to electronic equipment with an ultrasonic fingerprint identification device; the tempered film body 2 is made of an explosion-proof layer 22, connected to the glass layer 21 between the explosion-proof layer 22 and the first release film, connected to the explosion-proof layer 22 and The first glue layer 23 between the second release films is composed of the first glue layer 23; the explosion-proof layer 22 is a plastic film that is fixedly connected to the glass layer 21 to prevent the explosion of the electronic equipment screen. It is a safety device. When the pressure inside the screen exceeds a certain limit When the film is broken first, the pressure in the screen can be reduced to avoid explosion. The first release film and the second release film are used to protect the toughened film 1 from dust and damage during transportation or when the user is not using it. The second release film also plays a role in maintaining the viscosity of the first coating layer 23 . The size of the toughened film 1 can be changed according to the size of the applied electronic equipment. The toughened film 1 is provided with a penetration hole 24 at the corresponding position of the ultrasonic fingerprint identification device, and the penetration hole 24 is filled with an ultrasonic penetration film 3. The penetration hole 24 can be set through the tempered film 1; at the same time, it can only penetrate the glass layer 21, and the explosion-proof layer 22 is located on the other surface of the first glue layer 23 away from the first glue layer 23 and is filled with ultrasonic penetration holes 24 The film 3, at this time, the explosion-proof layer 22 and the first adhesive layer 23 are in a closed state; at the same time, only the penetration hole 24 may be provided in the explosion-proof layer 22, and the ultrasonic penetration membrane 3 may be filled in the penetration hole 24, or the second A glue layer 23 fills the through holes 24 provided on the explosion-proof layer 22 so that the inner and outer surfaces of the tempered film 1 are flat and flat. The penetration hole 24 of the toughened film 1 is filled with an ultrasonic penetrating film 3; preferably, the ultrasonic penetrating film 3 is a plastic film. Preferably, the material of the plastic film can be acrylic plastic (plexiglass, acrylic), two-component mixture Hardened glue (EpoxyAdhesive, AB glue), polyethylene terephthalate (Polyethylene terephthalate, PET), etc., the specific materials can be adjusted according to needs; the thickness of the ultrasonic penetration film 3 is controlled between 0.1 mm and 0.25 mm; The plastic film is made of ultrasonic-permeable material, which is transitionally connected with the penetration hole 24; the ultrasonic penetration film 3 includes a penetration layer and a second glue layer, and a third release film is provided on the second glue layer , It plays a role in preventing dust and damage of the ultrasonic penetrating film 3 and maintaining the viscosity of the second coating layer; the edges of the first release film, the second release film and the third release film are all convexly formed with peeling parts, It is convenient for the user to pull the first release film, the second release film or the third release film from the tempered film 1 or the ultrasonic penetrating film 3 by pulling.

4 to 5, as a specific implementation of the tempered film 1 provided in this embodiment, the outer periphery of the tempered film main body 2 is fixedly connected with a plastic frame 4, preferably, a polyethylene terephthalate (Polyethylene Terephthalate (PET) soft edge protection makes the tempered film 1 closely fit the screen of the electronic device; when applied to the electronic device with a curved screen, the glass layer 21 uses 3D hot-bent glass to further make the tempered film 1 fit the screen better The arc can realize full-screen protection, not easy to break the edges, and solve the problem of daily bumping and broken edges, and the first glue layer 23 only covers the surrounding frame position of the tempered film 1. When the tempered film 1 is thin enough, it can be directly Ultrasonic penetrating film 3 is provided at the corresponding position of the ultrasonic fingerprint identification device, that is, there is no need to provide penetration holes 24 in the tempered film 1, and only the ultrasonic penetrating film 3 is fixedly connected to the inner surface of the explosion-proof layer 22 and located in the ultrasonic fingerprint identification device At the corresponding position, the ultrasonic fingerprint unlock can be realized. The first adhesive layer 23 includes an Optically Clear Adhesive (OCA) adhesive layer and a silicon adhesive layer, the OCA adhesive layer and the explosion-proof layer 22 are fixedly connected, the silicon adhesive layer is fixedly connected to the electronic device, and the OCA adhesive layer is fixed. The layer can make the tempered film 1 fit the screen more closely during installation, without bubbles, reduce glare, reduce the loss of light emitted by the display, increase the brightness of the display, provide high transmittance, and reduce energy consumption. The toughened film 1 is provided with a through hole corresponding to the horn hole of the electronic device, and the through hole is provided through the toughened film 1, and the through hole enables the sound of the horn hole to be effectively emitted.

The above descriptions are only preferred embodiments of this application, and are not intended to limit this application. Any modification, equivalent replacement or improvement made within the ideas and principles of this application shall be included in the protection of this application. Within range.

Claims

A tempered film for electronic equipment with an ultrasonic fingerprint identification device, characterized in that: the tempered film includes a first release film, a second release film, and a tempered film body arranged between the two. The toughened film body includes an explosion-proof layer, a glass layer connected between the explosion-proof layer and the first release film, and a first glue layer connected between the explosion-proof layer and the second release film; the toughened film is provided with and The penetration hole corresponding to the ultrasonic fingerprint identification device.
The toughened film according to claim 1, wherein the penetration hole is filled with an ultrasonic penetration film.
The toughened film according to claim 2, wherein the ultrasonic penetrating film is a plastic film.
The toughened film according to claim 2, wherein the ultrasonic penetrating film includes a penetrating layer and a second glue layer, and a third release film is provided on the second glue layer.
The toughened film of claim 4, wherein the edges of the first release film, the second release film and the third release film are all protrudingly formed with peeling portions.
The toughened film according to claim 1, wherein the outer periphery of the toughened film body is fixedly connected with a plastic frame.
The tempered film according to claim 1, wherein the first coating layer comprises an optically clear adhesive coating layer and a silicon coating layer, and the optically clear adhesive coating layer is fixedly connected to the explosion-proof layer, The silicon coating layer is fixedly connected to the electronic device.
The toughened film according to claim 1, wherein the toughened film is provided with a through hole corresponding to the horn hole of the electronic device, and the through hole is provided through the toughened film.