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

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 / ...

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

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