Polymer, method for producing the polymer, optical film, and image display device

A technology of optical film and polymer, applied in optics, instruments, optomechanical equipment, etc., can solve the problems of unobtained optical film and unsatisfactory heat resistance, and achieve low thermal expansion, good optical performance, good durability thermal effect

Inactive Publication Date: 2007-11-07
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This polyimide film has good transparency, but heat resistance is still not satisfactory in terms of high-quality polysilicon film forming TFT
Therefore, it has hitherto been desired to develop an optical film having both good heat resistance and good optical properties, but no one has succeeded so far in obtaining a satisfactory optical film

Method used

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  • Polymer, method for producing the polymer, optical film, and image display device
  • Polymer, method for producing the polymer, optical film, and image display device
  • Polymer, method for producing the polymer, optical film, and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] 1. Film preparation:

[0112] (1) Preparation of film P-1:

[0113] Put 32 g of 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl into a reactor equipped with a thermometer, a stirrer and a nitrogen introduction tube, and dissolve it in 230 g of N -Methyl-2-pyrrolidone. Then, 25 g of bicyclo[2.2-2]octane-2,3,5,6-tetracarboxylic acid was gradually added thereto at 15°C. It was allowed to react at 30°C for 1 hour, then at 70°C for 1 hour, and then at 100°C for 1 hour, thus obtaining a transparent solution. Next, as additives, 6.2 g of triphenyl phosphite and 16 g of pyridine were gradually added dropwise to the solution, which was stirred at 100°C for 0.5 hours, then at 130°C for 0.5 hours, and at 150°C for 0.5 hours and stirred at 170°C for 5 hours. Next, the resulting solution was kept cooled, and then it was reprecipitated in a mixed solution of 2 liters of methanol and 2 liters of water to obtain a polymer. It was filtered, the sediment was dried and redissolved in ...

Embodiment 2

[0136] [Example 2] Preparation of stretched film:

[0137] 1. Uniaxial stretching:

[0138] In order to confirm the fact that the stretched polymers of the invention show greatly reduced thermal expansion, the polymers of the invention were stretched.

[0139]

[0140] A film sample (2.0 cm x 7.0 cm sheet) was prepared and uniaxially stretched using tensilon (Orientec's Tensilon RTC-1210A) at a stretching speed of 200 mm / min. Three samples were tested in one experiment and their data were averaged. (The chuck to chuck distance was 5 cm and the draw ratio was 1.3 times.)

[0141] Polymer P-1 was dissolved in N,N-dimethylacetamide at a ratio of 20% by mass to prepare a dope. It was cast on a glass plate using a spatula and dried at 80°C. Before drying completely, it was peeled off from the glass plate, cut into 20mm x 70mm pieces, and stretched with tensilon. Stretching conditions were as follows: a resin temperature of 250° C., a stretching speed of 200 mm / min, a distanc...

Embodiment 3

[0148] [Example 3] Formation of gas barrier layer and transparent electrode layer:

[0149] 1. Formation of gas barrier layer:

[0150] According to the DC magnetron sputtering method, oxygen was introduced into the chamber in an Ar environment under a vacuum of 500 Pa at the same time, and the target Si was sputtered onto the optical thin film samples P-1, P-2, P-21 and P- 22 on both surfaces. The pressure is 0.1Pa, and the output power is 5kW. Thus, a gas barrier layer was formed with a thickness of 60 nm. The water vapor permeability of an optical film sample having a gas barrier layer formed on both surfaces thereof is at most 0.1 g / m measured at 40°C and a relative humidity of 90% 2 day; and an oxygen permeability of at most 0.1 ml / m, measured at 40°C and 90% relative humidity 2 ·sky.

[0151] 2. Formation of transparent conductive layer:

[0152] While heating the optical thin film sample coated with the gas barrier layer at 300 ° C, according to the DC magnetron s...

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Abstract

An optical film having a recurring unit of the following formula (1) with good heat resistance and good optical properties: formula (1) wherein X represents a divalent linking group containing a monocyclic or condensed polycyclic aromatic ring; Y represents a methylene group, an ethylene group or an ethenylene group; and X is represented by the following formula (2), wherein R1 and R2 are each a halogen group, alkyl group, alkoxy group or aryl group, and m and n are each 0-4.

Description

technical field [0001] The present invention relates to a polymer having good heat resistance and good optical performance, to a preparation method of the polymer, to an optical film and to an image display device comprising the optical film with good display quality. Background technique [0002] Recently, in the field of flat panel displays such as liquid crystal display devices and organic electroluminescence devices (hereinafter referred to as "organic EL devices"), use of plastics instead of glass substrates has been studied because of the need to increase their breakage resistance and reduce their weight and thickness. . In particular, in display devices of mobile information communication devices such as mobile information terminals such as mobile phones, pocket personal computers, and laptop personal computers, plastic substrates are highly required. [0003] Plastic substrates used in the field of flat panel displays must be electrically condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/22H05K1/03G03F7/023C09D179/08G03F7/039
Inventor 相木康弘石塚孝宏
Owner FUJIFILM CORP
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