High-strength under-screen fingerprint identification photoelectric protective film and preparation method thereof

Abstract

The invention aims to provide a high-strength under-screen fingerprint identification photoelectric protective film and a preparation method thereof. The film comprises a release bottom film layer anda functional layer, wherein the functional layer sequentially comprises a mounting silica gel layer, a use base film layer, an HC layer, a protective silica gel layer and a protective base film layeralong the direction far away from the release base film layer; the use base film layer is a double-layer use base film; at least one surface of the use base film is provided with an anti-corrosion easy-to-connect layer; the anti-corrosion easy-to-adhere layer is made of one or a combination of more of polyester, polyurethane, acrylic acid and an organic silicon coating; an adhesive layer is arranged between the two layers of barren base films; the adhesive layer is one or a combination of more of an OCA pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, a polyurethane adhesive and a polyester adhesive, and the adhesive force of the adhesive layer is 500-5000 g.

Description

technical field [0001] The invention relates to a high-strength under-screen fingerprint recognition photoelectric protective film, which belongs to the field of display protection of electronic products. Background technique [0002] With the rapid development of smart wearable device technology, curved screens are increasingly used in electronic products, especially TVs, computers, and mobile phones. The curved screen has the following characteristics: the curved screen is light in weight and low in power, which solves the problem of battery life to a certain extent; the curved screen is also more ergonomically designed and more comfortable to wear. However, the existing high-strength under-screen fingerprint recognition photoelectric protective film has a single-layer type and a composite type. The single-layer type is only suitable for 2.5D screens; There are two types of touch screen protective films with different curvatures such as 4D. Since the base film layer is g...

AI Technical Summary

Problems solved by technology

However, the existing high-strength under-screen fingerprint recognition photoelectric protective film has a single-layer type and a composite type. The single-layer type is only suitable for 2.5D screens; Two kinds of touch screen protective films with different radians such as 4D

Since the base film layer is generally made of PC material, it is easily corroded by the organic solvent contained in the organic layer on the upper and lower surfaces, so that the strength of the base film layer itself is reduced, and the tensile strength is greatly reduced.

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