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A kind of flexible substrate, preparation method and application thereof

A flexible substrate and flexible display technology, applied in the fields of semiconductor/solid-state device manufacturing, organic semiconductor devices, electric solid-state devices, etc. The effect of short interruption time

Active Publication Date: 2019-06-07
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a flexible substrate, a preparation method and its application, which solves the technical problem of uneven force on the flexible screen in the prior art flexible QLED, and facilitates the use and development of flexible QLED

Method used

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  • A kind of flexible substrate, preparation method and application thereof
  • A kind of flexible substrate, preparation method and application thereof
  • A kind of flexible substrate, preparation method and application thereof

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Experimental program
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preparation example Construction

[0025] Please refer to the attached figure 2 , which is a flow chart of a method for preparing a flexible substrate provided in an embodiment of the present application. Depend on figure 2 Visible, described method comprises the following steps:

[0026] S101: Mixing hydroxyazobenzene and the first chopped cellulose to prepare a hydroxyazobenzene composition.

[0027] The hydroxyazobenzene is uniformly mixed with the first chopped cellulose, so that the hydroxyazobenzene adheres to the surface of the first chopped cellulose, forming a form in which the hydroxyazobenzene wraps the first chopped cellulose, and the hydroxyazobenzene is obtained. Azobenzene composition. Wherein, hydroxyazobenzene can be p-hydroxyazobenzene (4-hydroxyazobenzene) or hydroxyazobenzene compounds, and the general structural formula is R group can be -H, -CH 3 , -NO 2 、-OCH 3 or -NH 2 etc., the hydroxyazobenzene in the application requires stronger polarity; the first chopped cellulose is bac...

Embodiment 1

[0058] A kind of preparation method of flexible substrate, get respectively 2g hydroxyazobenzene, 0.1g the first chopped cellulose (length mean value is in 10 3 nm), 2.5g poly 4-vinylpyridine, 0.15g second chopped cellulose (average length in 10 3 nm) and 10g of PDMS; mixed hydroxyazobenzene and the first chopped cellulose to make a hydroxyazobenzene composition; mixed poly-4-vinylpyridine and the second chopped cellulose to make poly-4-vinyl Pyridine composition; mix hydroxyazobenzene composition, poly-4-vinylpyridine composition and PDMS, and co-extrude to obtain a flexible substrate with a thickness of 1 mm. The test shows that the rigid tensile modulus of the flexible substrate can reach 6Gpa and the flexural modulus can reach 700Mpa, which meets the requirements for the use of flexible QLEDs.

Embodiment 2

[0060] A kind of preparation method of flexible substrate, get respectively 2g hydroxyazobenzene, 0.1g the first chopped cellulose (length mean value is in 10 3 nm), 2.5g poly 4-vinylpyridine, 0.15g second chopped cellulose (average length in 10 3 nm) and 10g of PDMS; mixed hydroxyazobenzene and the first chopped cellulose to make a hydroxyazobenzene composition; mixed poly-4-vinylpyridine and the second chopped cellulose to make poly-4-vinyl Pyridine composition; PDMS was dissolved in 25ml of n-hexane, hydroxyazobenzene composition and poly-4-vinylpyridine composition were added to the PDMS n-hexane solution, and mixed evenly; co-extruded to obtain a flexible film with a thickness of 0.8mm substrate. The test shows that the rigid tensile modulus of the flexible substrate can reach 6Gpa and the flexural modulus can reach 700Mpa, which meets the requirements for the use of flexible QLEDs.

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Abstract

The application discloses a flexible substrate, a preparation method and its application. The method comprises the following steps: mixing hydroxyazobenzene and first chopped cellulose to obtain a hydroxyazobenzene composition; mixing poly-4-vinylpyridine and the second chopped cellulose to obtain a poly-4-vinylpyridine composition; mix the hydroxyazobenzene composition, the poly-4-vinylpyridine composition and an elastomer material, and co-extrude to obtain a flexible substrate. The flexible substrate provided by this application is used in flexible QLEDs, and the QLED flexible display screen is bonded and cured on the flexible substrate to obtain a flexible QLED display device. The flexible substrate, preparation method and application provided in the present application make the QLED flexible screen in the flexible QLED bear force, and facilitate the use and development of the flexible QLED.

Description

technical field [0001] The present application relates to the technical field of liquid crystal televisions, in particular to a flexible substrate, a preparation method and its application. Background technique [0002] QLED (Quantum Dot Light Emitting, quantum dot light-emitting device) has the characteristics of high brightness, fast response, wide color gamut, and better HDR (high data rate, high dynamic lighting rendering) effect, and is generally considered to be the next generation of quantum display The ultimate form of technology. With the development of QLED, people hope that QLED is rigid when in use, and flexible and foldable when not in use, so that it is easy to use and carry. [0003] Usually, the structure of flexible QLED is that the flexible screen is mounted on the mechanical structure, and the mechanical structure is used to support and drive the bending of the QLED flexible screen. The flexible change of the QLED flexible screen is realized by controllin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H01L51/00H10K99/00
CPCH10K77/111H10K71/00H10K2102/311Y02E10/549
Inventor 刘振国宋志成刘卫东
Owner HISENSE VISUAL TECH CO LTD