CN212504684U

CN212504684U - Special protection film of fingerprint unblock under optical type screen

Info

Publication number: CN212504684U
Application number: CN201922376511.4U
Authority: CN
Inventors: 李英顺
Original assignee: Shenzhen Horae New Material Co ltd
Current assignee: Shenzhen Horae New Material Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-02-09
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a special protective film for optical type underscreen fingerprint unlocking, which completely solves the problems of inspection and protection of optical type underscreen fingerprint unlocking process and finished product shipment protection by selecting and controlling film materials and selecting adhesives and improving the process; the unlocking rate reaches 100%, the method is free of any residual glue and other pollution, reliable guarantee is provided for smooth mass production of clients, the use cost of the clients is synchronously greatly reduced, the defects of other protective films in the optical type screen fingerprint unlocking process are completely improved, the method can be widely applied to the production and shipment of the touch screen optical type fingerprint unlocking module, and the touch screen optical type fingerprint unlocking module is manufactured in a thousand-level dust-free room through a coating process by adopting development of a transparent PC film material and development of an acrylic adhesive. The method has the using effects of high transparency, low fog, low refraction, no pollution, high reliability and the like, the low refraction depends on the precise casting recognition of the PC resin, and the high transparency and the low fog depend on the purification of the PC resin monomer and the purity of the acrylic resin.

Description

Special protection film of fingerprint unblock under optical type screen

[ technical field ] A method for producing a semiconductor device

The utility model relates to a cell-phone screen protection film especially relates to a special protection film of fingerprint unblock under optical type screen.

[ background of the invention ]

With the daily and new upgrade of intelligent electronic products, the unlocking mode of intelligent equipment is undergoing a primary innovation, namely password unlocking, image unlocking, Home key unlocking, face recognition unlocking, optical underscreen fingerprint unlocking, ultrasonic underscreen fingerprint unlocking and the like; at present, the mode suitable for blind solution is that the unlocking of the finger print under the screen is taken as the technical direction, especially the optical unlocking technology of the finger print under the screen takes OPPO, VIVO and Hua as the leading factor, the ultrasonic mode mainly takes high pass as the leading factor, but most manufacturers tend to be optical mode mainly due to the problems of energy consumption and cost. The optical type under-screen fingerprint unlocking has very high requirements on film materials in the aspects of inspection and protection due to the refraction problem of light, particularly has strict requirements on the axial angle, the crystal point, the phase difference and the like of the film materials, and also puts high requirements on the selection of a protective film adhesive.

[ Utility model ] content

The utility model aims to solve the problems of higher energy consumption cost, higher light refraction influence, low transparency and high fog of the existing protective film, and provide a special protective film for optical screen lower fingerprint unlocking.

The utility model discloses a realize through following technical scheme: a special protective film for unlocking fingerprints under an optical screen comprises a transparent PC film, an adhesive layer and a PET release film;

PET leaves the type membrane upper surface coating and has the viscose layer, the laminating of viscose layer top has transparent PC membrane.

Further, the adhesive layer is made of acrylic adhesive having a repeelability, good weather resistance, and high purity.

Further, the coating thickness of the adhesive layer is 10 to 30um, and the viscosity is 50 to 200g/25 mm. Further, the light transmittance of the acrylic adhesive is more than 99%.

Further, transparent PC membrane is precision casting and surperficial level and smooth PC resin, transparent PC membrane thickness is 50 to 65 um.

Further, the PC resin is a purified PC resin monomer.

Further, the thickness of the PET release film is 25 to 125 um.

Further, the peel force of the PET release film is 10 to 15g/25 mm.

The beneficial effects of the utility model reside in that: by selecting and controlling the film material and selecting and improving the adhesive, the problems of checking and protecting the optical underscreen fingerprint unlocking process and protecting the finished product shipment are completely solved; the unlocking rate reaches 100%, the method is free of any residual glue and other pollution, reliable guarantee is provided for smooth mass production of clients, the use cost of the clients is synchronously greatly reduced, the defects of other protective films in the optical type screen fingerprint unlocking process are completely improved, the method can be widely applied to the production and shipment of the touch screen optical type fingerprint unlocking module, and the touch screen optical type fingerprint unlocking module is manufactured in a thousand-level dust-free room through a coating process by adopting development of a transparent PC film material and development of an acrylic adhesive. The method has the using effects of high transparency, low fog, low refraction, no pollution, high reliability and the like, the low refraction depends on the precise casting recognition of the PC resin, and the high transparency and the low fog depend on the purification of the PC resin monomer and the purity of the acrylic resin.

[ description of the drawings ]

FIG. 1 is a schematic structural view of the protective film dedicated for optical underscreen fingerprint unlocking of the present invention;

reference numerals: 1. a transparent PC film; 2. an adhesive layer; 3. PET release film; .

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings and specific embodiments:

the first embodiment is as follows:

as shown in fig. 1, a special protective film for unlocking fingerprints under an optical screen comprises a transparent PC film 1, an adhesive layer 2 and a PET release film 3;

PET has viscose layer 2 from type 3 upper surface coatings of membrane, the laminating of viscose layer 2 top has transparent PC membrane 1.

Preferably, the adhesive layer 2 is made of an acrylic adhesive having a high purity and good weather resistance and removability.

Preferably, the adhesive layer 2 is coated to a thickness of 10 to 30um and a viscosity of 50 to 200g/25 mm.

Preferably, the acrylic adhesive has a light transmittance of more than 99%.

Preferably, transparent PC membrane 1 is precision casting and surperficial level and smooth PC resin, transparent PC membrane 1 thickness is 50 to 65 um.

Preferably, the PC resin is a purified PC resin monomer.

Preferably, the thickness of the PET release film 3 is 25 to 125 um.

Preferably, the peel force of the PET release film 3 is 10 to 15g/25 mm.

Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a special protection film of fingerprint unblock under optical type screen which characterized in that: comprises a transparent PC film, an adhesive layer and a PET release film;

PET leaves the type membrane upper surface coating and has the viscose layer, the laminating of viscose layer top has transparent PC membrane, the material of viscose layer is for possessing the acrylic acid adhesive that the reextractability ability, weatherability are good, the high purity, the coating thickness of viscose layer is 10 to 30um, viscidity 50 to 200g/25mm, transparent PC membrane is precision casting and surface leveling's PC resin, transparent PC membrane thickness is 50 to 65um, PET is 25 to 125um from the type membrane thickness, PET is 10 to 15g/25mm from the peeling strength of type membrane.

2. The special protective film for unlocking the optical underscreen fingerprint of claim 1, wherein: the light transmittance of the acrylic adhesive is more than 99%.

3. The special protective film for unlocking the optical underscreen fingerprint of claim 1, wherein: the PC resin is a purified PC resin monomer.