Display device, polyimide precursor composition, polyimide film, and laminated body

A technology of polyimide precursor and polyimide film, which is applied in the direction of instruments, identification devices, optics, etc., can solve the problems of increasing the thermal expansion coefficient of polyimide film, increasing the preparation cost, and reducing heat resistance
CN113061340BActive Publication Date: 2021-08-20武汉柔显科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉柔显科技股份有限公司
Publication Date
2021-08-20

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Abstract

The invention discloses a display device, a polyimide precursor composition, a polyimide film and a laminated body related to the field of photoelectric technology. The display device includes a substrate and a display unit, the substrate includes a polyimide film formed from a polyimide precursor composition, the polyimide precursor composition includes polyamic acid and a polymer, and the polymer The compound contains the repeating unit shown in formula (1): in formula (1) in formula (1), n ​​is an integer of 2-200, R 1 Represents a hydrogen atom, a monovalent organic group, R 2 Represents any one or more monovalent organic groups. Through the introduction of diazoacetate polymers, the present invention not only improves the transmittance of polyimide film, but also improves its glass transition temperature and mechanical properties, and obtains polyimide film with low haze and lower CTE. Amine film.
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Description

technical field

[0001] The invention relates to the field of optoelectronic technology, in particular to a display device, a polyimide precursor composition, a polyimide film and a laminated body. Background technique

[0002] With the rapid development of display technology, electronic terminals have higher and higher requirements for display screens. For example, the requirement to place a front-facing camera under a flexible display has attracted a lot of attention. Amine materials put forward higher requirements, which means that polyimide film materials need to have higher light transmittance under the premise of excellent heat resistance and other superior properties.

[0003] Generally speaking, polyimide films prepared by aromatic diamines and aromatic dibasic anhydrides have excellent heat resistance, but the formation of intramolecular conjugation and charge transfer complexes makes such films The polyimide film exhibited a distinct tan color. Therefore, in order...

Claims

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