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Optical adhesive and display device

A technology for display devices and optical adhesives, which can be used in identification devices, adhesives, instruments, etc., and can solve problems such as affecting the reliability of flexible display devices and being difficult to restore.

Active Publication Date: 2019-11-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Flexible display devices are generally constructed with a bending radius between 3mm and 10mm. When the flexible panel and external components are bent for a long time, deformations that are difficult to recover will occur, thereby affecting the reliability of the flexible display device.

Method used

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  • Optical adhesive and display device
  • Optical adhesive and display device
  • Optical adhesive and display device

Examples

Experimental program
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preparation example Construction

[0071] The preparation process of the adhesive may specifically include the following steps: by fully mixing 100 parts by weight of a monomer mixture comprising 65 wt% of 2-ethylhexyl acrylate and 35 wt% of 4-hydroxybutyl acrylate in a glass container, 4 parts by weight of Organic nanoparticles and 0.005 parts by weight of Irgacure651 photopolymerization initiator were used to prepare the mixture. After displacing the dissolved oxygen in the glass container with nitrogen, the mixture was subjected to partial polymerization by irradiation with ultraviolet (UV) light using a low-pressure lamp to prepare a (meth)acrylic copolymer (prepolymer) containing hydroxyl groups And has a viscosity of about 2000cPs, a mixture of monomers and organic nanomaterials. An additional Irgacure 184 photopolymerization initiator was added to the prepared mixture in an amount of 5 parts by weight relative to 100 parts by weight of the monomer mixture, thereby preparing an adhesive composition.

[0...

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Abstract

The present invention relates to the technical field of display, and discloses an optical adhesive and a display device. The optical adhesive comprises a substrate layer, and a first adhesive materialstructure and a second adhesive material structure which are respectively located at two sides of the substrate layer, and each of the substrate layer, the first adhesive material structure and the second adhesive material structure is made of a transparent material; and the deformation recovery rate of the substrate layer is greater than that of each of the first adhesive material structure andthe second adhesive material structure. The optical adhesive comprises the substrate layer, the first adhesive material structure and the second adhesive material structure, and the substrate layer islocated between the first adhesive material structure and the second adhesive material structure, has a large deformation recovery rate, and can effectively enhance the deformation recovery performance of the optical adhesive, so when the optical adhesive is applied to the folding display device, the deformation recovery property of the entire folding display device after bending is effectively improved, the flexing phenomena of the bent area of the folding display device during folding and unfolding are reduced, and the using reliability of the flexible display device is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical adhesive and a display device. Background technique [0002] With the development of display technology, demands for different forms of display devices have been increasing, among which bendable or foldable display devices have been developed. A flexible display device generally includes various external components such as a flexible display panel and a touch screen. [0003] Flexible display devices are generally constructed with a bending radius between 3 mm and 10 mm. When the flexible panel and external components are bent for a long time, deformations that are difficult to recover will occur, thereby affecting the reliability of the flexible display device. Contents of the invention [0004] The invention discloses an optical adhesive and a display device, and aims to provide an optical adhesive for improving the bending performance of a flexible display devic...

Claims

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Application Information

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IPC IPC(8): C09J7/25G09F9/30
CPCC09J7/255C09J7/25G09F9/301C09J2467/006C09J2479/086C09J2475/006C09J2433/00H10K59/10G06F2203/04102G06F2203/04103G06F3/041C09J7/22C09J2203/318C09J2301/124C09J2301/312C09J2483/006B32B7/06B32B7/12B32B2307/412B32B2307/546B32B2307/732B32B2457/208
Inventor 杜双蔡宝鸣
Owner BOE TECH GRP CO LTD
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