Transparency film, optical material comprising same, and display device comprising same

A transparent film and light-transmitting technology, which is applied in optics, optical components, nonlinear optics, etc., can solve the problems of reduced visual clarity of displays, poor visibility of polymer films, and image distortion of display devices, etc.

Pending Publication Date: 2021-02-09
SK INNOVATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the above-mentioned speckle phenomenon occurs, the image of the display device is distorted, which results in a decrease in the visual clarity of the display
[0007] Therefore, depending on a specific angle or light, the visibility of the polymer film is poor, and in order to improve the display device, it is necessary to improve the appearance quality

Method used

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  • Transparency film, optical material comprising same, and display device comprising same
  • Transparency film, optical material comprising same, and display device comprising same
  • Transparency film, optical material comprising same, and display device comprising same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0118] [Molar ratio of TFMB:6FDA:TPC=100:14:86]

[0119] Dimethylacetamide (DMAc) and 2,2'-bis(trifluoromethyl)benzidine (TFMB) were added to the reactor under a nitrogen atmosphere and stirred well, and then 4,4'-hexa Fluoroisopropylidene diphthalic anhydride (6FDA) and stir well until dissolved. After that, terephthaloyl chloride (TPC) was added thereto, and the mixture was dissolved and reacted by stirring for 6 hours to prepare a polyamic acid resin composition. Here, the amount of each monomer was found to be the molar ratio of TFMB:6FDA:TPC=100:14:86, and the temperature of the reactor was maintained at 30°C. The finally obtained polyamic acid resin composition had a viscosity of 33000 cps. Then, pyridine and acetic anhydride were added to the polyamic acid resin composition at 2.5 times mole of the total amount of dianhydride added, and stirred at 60° C. for 1 hour to prepare a polymerization solution 1 .

[0120] Thereafter, the polymerization solution 1 was precipi...

preparation example 2

[0122] [Molar ratio of TFMB:CBDA:IPC=100:60:40]

[0123] Dimethylacetamide (DMAc) and 2,2'-bis(trifluoromethyl)benzidine (TFMB) were added to the reactor under nitrogen atmosphere and stirred well, then 4,4'-cyclo butanetetracarboxylic dianhydride (CBDA), and stir well until dissolved. Thereafter, isophthaloyl chloride (IPC) was added thereto, and the mixture was dissolved and reacted by stirring for 6 hours to prepare a polyamic acid resin composition. Here, the amount of each monomer was obtained as the molar ratio of TFMB:CBDA:IPC=100:60:40, and the temperature of the reactor was maintained at 30°C. The finally obtained polyamic acid resin composition had a viscosity of 90,000 cps. Then, pyridine and acetic anhydride were added to the polyamic acid resin composition in moles of 2.5 times the total amount of dianhydride added, and stirred at 60° C. for 1 hour to prepare a polymerization solution 2 .

[0124] Thereafter, the polymerization solution 2 was precipitated in ex...

preparation example 3

[0126][Molar ratio of TFMB:CBDA:IPC=100:40:60]

[0127] Dimethylacetamide (DMAc) and 2,2'-bis(trifluoromethyl)benzidine (TFMB) were added to the reactor under nitrogen atmosphere and stirred well, then 4,4'-cyclo butanetetracarboxylic dianhydride (CBDA), and stir well until dissolved. Thereafter, isophthaloyl chloride (IPC) was added thereto, and the mixture was dissolved and reacted by stirring for 6 hours to prepare a polyamic acid resin composition. Here, the amount of each monomer was found to be the molar ratio of TFMB:CBDA:IPC=100:40:60, and the temperature of the reactor was kept at 30°C. The finally obtained polyamic acid resin composition had a viscosity of 68000 cps. Then, pyridine and acetic anhydride were added to the polyamic acid resin composition at 2.5 times the mole of the total amount of dianhydride added, and stirred at 60° C. for 1 hour to prepare a polymerization solution 3 .

[0128] Thereafter, the polymerization solution 3 was precipitated in excess ...

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Abstract

Provided are a transparent film, an optical material including the same, and a display device including the same.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2019-0097130 filed with the Korean Intellectual Property Office on August 9, 2019, the entire disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The following invention relates to a transparent film, an optical material including the transparent film, and a display device including the transparent film. More specifically, the following invention relates to a transparent film excellent in optical properties such as visibility, an optical material including the transparent film, and a display device including the transparent film. Background technique [0004] Substrate materials for flexible displays superior as next-generation display devices should be lightweight, non-fragile, and bendable, and not limited by their form due to their processability. [0005] In addition, a glass substrate is currently ...

Claims

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Application Information

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IPC IPC(8): G02B1/04C08J5/18C08L79/08
CPCG02B1/04C08J5/18C08J2379/08C08G73/1039C08G73/1042C08G73/1067G02F1/1335G02F2202/022C08G73/10
Inventor 朴珉相朴真炯田承慜黄裕锡
Owner SK INNOVATION CO LTD
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