Silicone adhesive, silicone film and backlight unit

Abstract

The present invention provides a highly functional silicone adhesive, a silicone film, and a backlight unit, and more particularly, to a functional silicone adhesive which has high transparency, high heat resistance, low reflectance, vibration resistance, no yellowing, impact resistance, and high adhesion of 3,000 gf / inch or more, can be used in a solvent-free manner, and can be used in a non-solvent manner. The present invention relates to an adhesive composition which exhibits uniform and excellent adhesion even when the thickness is 500 [mu] m or more, facilitates both-side adhesion, has a high refractive index of 1.5 or more, facilitates functional lamination with a high adhesion equal to or greater than that of acrylic or urethane when formed into a film, and has high visibility characteristics at the same time.

Description

technical field [0001] The present invention relates to an organosilicon adhesive, an organosilicon film and a backlight unit, and more specifically, to the following functional organosilicon adhesive and a functional organosilicon film with various functions utilizing the same: Thermal, low reflectivity, vibration resistance, non-yellowing, impact resistance, and high adhesion with a minimum of 3,000gf / inch or more, suitable for silicone OCA films with a thickness of 500um to 3,000um, and can be used as solvent-free type When used, it shows uniform and excellent adhesion even if the thickness is 500um or more, which is beneficial for bonding on both sides, and has a high refractive index of 1.5 or more, which is beneficial to be equal to or higher than acrylic and urethane when forming a film high adhesion and functional lamination with high visibility properties. Background technique [0002] The following description merely provides background information related to the ...

AI Technical Summary

Problems solved by technology

In particular, acrylics and urethanes are widely used because they have excellent transparency, are easy to design, and are inexpensive. However, they have problems of low heat resistance, low weather resistance, and discoloration due to yellowing. Therefore, it is required to improve this in the thick film type that will be used in many parts in the future, as well as in semiconductors, displays, and automobiles that require high heat work such as high heat resistance and adhesion stability.

[0005] To meet such demands, transparent adhesives and adhesives using silicone-based resins have been developed, and silicone films using them have been developed, but there are limitations in satisfying high transparency, low reflectivity, and high visibility at the same time. , In the case of directly mixing metal powder in order to increase the refractive index, there are problems that it is difficult to process, adjust the refractive index, and solve the problems of thermal instability and inhomogeneity of physical properties.

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