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Protective film adhesive tape for supporting flexible OLED

A protective film and flexible technology, applied in the direction of adhesives, film/sheet adhesives, adhesive types, etc., can solve the problems of unreachable adhesive tape, poor internal cohesion of tape, and decreased viscosity, etc., to achieve excellent bonding effect, good support effect, excellent viscous effect

Active Publication Date: 2020-03-06
新纶电子材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So if the viscosity of the tape decreases at a higher temperature, it will bring the risk of damage to the mobile phone
Since the surface of the flexible OLED device is relatively fragile after peeling off from the rigid substrate, it needs to be bonded with tape to protect the support and fix it. If ordinary high-adhesive tape is used to bond the protective film, the cohesion of the tape will be poor in a high temperature environment. It will lead to a decrease in viscosity and affect the bonding performance of the product
At present, the high-temperature resistance solutions for tapes on the market are all achieved by increasing cohesion, which leads to the fact that the adhesive tape cannot reach a high-viscosity level

Method used

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  • Protective film adhesive tape for supporting flexible OLED
  • Protective film adhesive tape for supporting flexible OLED

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of above-mentioned structure, comprises the steps:

[0024] The raw materials of the special polyacrylic acid adhesive layer 5 are mixed and then coated on one surface of the second substrate layer 4 by Slot-die / CED / scraper coating methods to obtain the special polyacrylic acid adhesive layer 5;

[0025] After mixing the raw materials of the antistatic polyacrylic resin hardening layer 3, apply it on the other surface of the second substrate layer 4 by means of dimple coating to obtain the antistatic polyacrylic resin hardening layer 3;

[0026] Apply the raw material of the first antistatic acrylic pressure-sensitive adhesive protective layer 2 on the non-bonded surface of the antistatic polyacrylic resin hardened layer 3 by coating methods such as Slot-die, to obtain the antistatic acrylic pressure-sensitive adhesive protective layer 2;

[0027] Lay the first substrate layer 1 on the non-pasted surface of the antistatic acrylic pressure-sensitive ...

Embodiment 1

[0031] A protective film tape for flexible OLED support in this embodiment has a multi-layer structure, including a 25 μm optical PET film for the first substrate layer, a 5 μm antistatic acrylic pressure-sensitive adhesive protective layer, a 1 μm antistatic polyacrylic resin hardened layer, The second substrate layer is 50 μm optical PET film, 15 μm special polyacrylic adhesive layer and 25 μm PET double-sided antistatic release film layer.

[0032] In terms of mass percentage, the raw material composition of the special polyacrylic adhesive layer includes: 100 parts of acrylic adhesive, 5 parts of rosin tackifying resin, 0.5 part of 2,6-toluene diisocyanate curing agent, acetanilide blocked isocyanate 0.5 parts of curing agent, 30 parts of ethyl acetate as organic solvent.

[0033] The antistatic polyacrylic resin hardening layer is a bending-resistant antistatic polyacrylic resin hardening layer. The raw material composition of antistatic polyacrylic resin hardening layer...

Embodiment 2

[0036] A protective film tape for flexible OLED support in this embodiment has a multi-layer structure, including a first substrate layer of 50 μm optical PET film, a 10 μm antistatic acrylic pressure-sensitive adhesive protective layer, a 2 μm polyacrylic resin hardened layer, a second Substrate layer 75μm optical PET film, 25μm special polyacrylic adhesive layer and 50μm double-sided antistatic PET release film layer.

[0037] In terms of mass percentage, the raw material composition of the special polyacrylic adhesive layer includes: 100 parts of acrylate adhesive, 10 parts of rosin tackifying resin, 1.5 parts of isophorone diisocyanate curing agent, ε-caprolactam blocked isocyanate 1.5 parts of curing agent, 40 parts of organic solvent toluene.

[0038] The antistatic polyacrylic resin hardening layer is a bending-resistant antistatic polyacrylic resin hardening layer. The raw material composition of the antistatic polyacrylic resin hardening layer includes: 60 parts by w...

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Abstract

The invention relates to a protective film adhesive tape for supporting a flexible OLED. The protective film adhesive tape sequentially comprises a first base material layer, an antistatic acrylic pressure-sensitive adhesive protective layer, an antistatic polyacrylic resin hardened layer, a second base material layer, a special polyacrylic adhesive layer and a PET double-sided antistatic releasefilm layer from top to bottom. The adhesive tape has an excellent bonding effect, and can effectively prevent heat emitting in the use process of an OLED device or the risk of device damage caused byinsufficient viscosity of the adhesive tape in the thermal disassembly process of a mobile phone screen; meanwhile, the PET base material with a certain thickness is adopted for the adhesive tape, bending-resistant hardening treatment is conducted on the surface of the base material, the adhesive tape can adapt to bending of the flexible OLED at different angles, the stiffness of the whole component is guaranteed after a device is attached, and components are prevented from being damaged; through antistatic treatment of the hardened layer, antistatic treatment of the acrylic acid protective layer on the surface and double-sided antistatic treatment of the release film, the excellent antistatic effect of the adhesive tape in use is ensured.

Description

Technical field [0001] The invention belongs to the technical field of adhesive materials, and specifically relates to a protective film tape for flexible OLED support. Background technique [0002] OLED (Organic Light-Emitting Diode, organic light-emitting diode) has many advantages such as self-illumination, all-solid state, wide viewing angle, thin thickness, fast response, etc., and has huge application prospects in flat panel displays. With the rapid development of display technology, personal wear, folding screen mobile phones, 3D large arc screen mobile phones and other electronic products, flexible OLED display devices are becoming more and more widely used. The current flexible OLED manufacturing process uses a polymer (PI paste) as a soft substrate on a rigid substrate (such as a glass substrate), and then manufactures OLED electrodes and light-emitting structures on the flexible substrate. After all manufacturing processes are completed, the rigid substrate and t...

Claims

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Application Information

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IPC IPC(8): C09J7/29C09J7/25C09J7/30C09J133/04C09J11/06C09J11/08
CPCC08K2201/014C09J11/06C09J11/08C09J133/04C09J2433/00C09J2433/005C09J2467/006C09J2479/086C09J7/25C09J7/255C09J7/29C09J7/30C09J2301/30C09J2301/312C08L93/04C08K5/29
Inventor 徐琰汪金虎
Owner 新纶电子材料(常州)有限公司