A kind of partition curing highly filled ab glue, preparation method and application thereof

A curing-type, area-based technology, applied in the direction of adhesives, film/sheet release liners, pressure-sensitive film/sheet, etc., can solve existing problems and problems that cannot be reached, and achieve soft, practical, and reliable arc areas. The effect of processing die-cutting convenience

Active Publication Date: 2020-08-04
SUZHOU SHIHUA NEW MATERIAL TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, for mainstream 3D curved screens outside of Apple, the 3D curved tempered glass solution has always had problems and has not been adopted.
The core contradiction is that under-screen fingerprints (optical or ultrasonic transmission) need thin AB glue without phase difference, and the processing tolerance of 3D curved tempered glass needs thicker AB glue to fill. The contradiction between the two has not been able to achieve a better solution. the balance

Method used

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  • A kind of partition curing highly filled ab glue, preparation method and application thereof
  • A kind of partition curing highly filled ab glue, preparation method and application thereof

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Embodiment Construction

[0035]The technical solutions of the present invention will be further described below in conjunction with specific embodiments and accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present invention, not all of them. According to the technical solution of the present invention, a partition curing high-filling AB glue 10 is prepared, by removing the PET commonly used in the prior art as the substrate layer, and using an ultra-thin optical film (1-25 μm) as the first substrate layer 11 Instead, through UV partition curing to ensure the balance between the relatively high modulus of the die-cut area and the relatively low modulus (with micro-fluidity) of the curved surface area corresponding to the 3D curved surface cover plate, through the soft silicone pressure-sensitive adhesive Layer 12 has better adhesion to 3D curved cover plates (such as AF glass, etc.), so that the partition curing high-filling AB glue 10 of the present i...

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Abstract

The invention relates to a zone-cured high-filling AB adhesive, the OCA optical adhesive layer in the edge area and other areas have differentiated storage modulus, and the edge area is die-cut without glue overflow. Applied to the filling and bonding of 3D curved tempered glass and 3D cover plate, the curved area of ​​the curved surface is soft and well filled, matching optical transmission and ultrasonic transmission for off-screen fingerprint recognition; it can solve the dimensional tolerance problem of 3D curved tempered glass bonding , there is no white edge on the arc edge and no rebound.

Description

technical field [0001] The invention relates to the field of AB glue for display screens, and more specifically relates to a high-fill AB glue with partitioned curing and a preparation method that can be applied to the filling and bonding of 3D curved tempered glass and 3D curved cover plate. Background technique [0002] In the past three years, with the popularity of flexible OLED screens, curved screens have gradually become the trend of high-end smartphones, such as Samsung, Huawei, OPPO, VIVO, MI, etc., and basically occupy the flagship mobile phones of various brands, with a sales price of 3000 - ranging from RMB 10,000. [0003] However, the curved screen is not drop-resistant, and it is easy to damage the mobile phone after it is accidentally dropped. Currently, mobile phone manufacturers are trying the following three solutions. [0004] 1. Hot bending 3D film. [0005] Coat the anti-fingerprint hardening layer on the PET film, and at the same time, use a composit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/38C09J7/40
CPCC09J7/38C09J7/40C09J2203/318
Inventor 顾正青陈启峰周奎任
Owner SUZHOU SHIHUA NEW MATERIAL TECH
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