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Moisture detection sensor, defect detection sensor, and sensor array using same

A detection sensor and defect detection technology, which is applied in the direction of optical testing defect/defect, instrument, analysis material, etc., can solve the problem of difficult application of substrate and barrier layer moisture penetration, difficult measurement of moisture penetration, and inability to obtain absolute moisture penetration rate and other issues, to achieve the effect of excellent sensitivity, fast response, and easy monitoring

Inactive Publication Date: 2017-09-26
KOREA INST OF CERAMIC ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, by this method, the test piece can only obtain the water permeability of a small part of a few centimeters, and can only obtain a relative comparison value but not an absolute water permeability, so it is difficult to apply to large-scale production. Measurement of moisture permeation of substrates and barrier layers of display devices
[0006] The IR measurement method uses the principle that the energy level of the rotation, vibration, and parallel movement of water molecules is equivalent to the IR wavelength and absorbs the light when it is irradiated with IR wavelength light. It is widely used in science, but due to the limited sensitivity of the detector, Difficult to measure water penetration below 10-4g / ㎡day
[0007] The mass analysis method is also based on scientific principles and can measure the water penetration rate, but such as the IR measurement method, it is difficult to measure the water penetration rate below 10-4g / ㎡day due to various problems
Also, the factor that has the greatest influence on the moisture permeability is the defects generated on the film

Method used

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  • Moisture detection sensor, defect detection sensor, and sensor array using same
  • Moisture detection sensor, defect detection sensor, and sensor array using same
  • Moisture detection sensor, defect detection sensor, and sensor array using same

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Experimental program
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Effect test

Embodiment

[0053] (1) Manufacture of compounds that can easily detect moisture and film defects

[0054] The synthesis process of the compound using Chemical Formula 1 is as follows. Calcein (Calcein, 3-3'-Bis[N,N-di(carboxymethy)-aminomethy]fluorescein) and polyethylene oxide (polyethylene oxide, PEO) as a hydrophilic polymer were dissolved in dimethyl formaldehyde Dimethyl formamide (DMF), stirred at 80° C., 500 RPM for 1 hour.

[0055] (2) Moisture Sensitivity Evaluation

[0056] In order to confirm the detection property of moisture, the fluorescence intensity based on the amount of moisture was measured using a fluorescence measuring device (PL Spectrometer, product of Shinko Co., Ltd., model: S-3100). The amount of 1 x 10-2 [M] of the compound of Chemical Formula 1 and PEO was adjusted to an amount of 0.05 wt% of DMF and added. The amount of moisture was increased by 20 ppm of moisture and an increase in fluorescence was observed. The results of the evaluation of moisture sensi...

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Abstract

The present invention provides a moisture detection sensor, a defect detection sensor, and a sensor array using the same, the moisture detector sensor comprising at least one moisture sensitive compound selected from the group consisting of Calcein, Calcein acetoxymethyl ester, Calcein-AM and Calcein blue. The moisture detection sensor and the defect detection sensor of the present invention have excellent selectivity, thereby being able to accurately quantify only moisture without being influenced by a coexisting gas, and are reversible so that the moisture detection sensor and the defect detection sensor can be re-used continuously, whereby it possible to reduce costs required and effectively monitor changes in moisture concentration. As such, the moisture detection sensor and the defect detection sensor can measure moisture barrier properties or water vapor transmission properties. In addition, the moisture detection sensor and the defect detection sensor have advantages of accurately detecting moisture due to excellent sensitivity and being very fast in response speed. Further, the present invention can easily monitor defects by utilizing the phenomenon whereby moisture easily penetrates into the defect detection sensor through a defect and thus fluorescence intensity increases.

Description

technical field [0001] The present invention relates to a moisture detection sensor, a defect detection sensor, and a sensor array using the same. More specifically, it relates to a moisture-sensitive compound that reversibly reacts with water (moisture) to synthesize fluorescence to reversibly sense moisture in a short time A moisture detection sensor, a defect detection sensor, and a sensor array using the same have high sensitivity even to an extremely small amount of moisture. Background technique [0002] Recently, OLED, which has attracted attention in the display field, is suitable for various fields such as small mobile phones to 55-inch TVs. One of the important technologies in the OLED display is the gas barrier technology (moisture and oxygen barrier technology or packaging technology) related to the lifetime and durability of the OLED. That is, OLED is very sensitive to moisture, and the allowable value of water vapor transmission rate (WVTR) is less than 10-6g / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64C09K11/06
CPCC09K11/06G01N21/643C09K2211/1088G01N2021/6432G01N21/77G01N21/91G01N21/95G01N31/222G01N33/00G01N2021/7786G01N33/0078G01N21/6428G01N21/76G01N21/78G01N2021/758
Inventor 具殷会金炫澈
Owner KOREA INST OF CERAMIC ENG & TECH
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