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    • 5. 发明申请
    • Melt-flow controlling method for elastomer by uv irradiation
    • 通过紫外线照射进行弹性体的熔体流动控制
    • US20050016672A1
    • 2005-01-27
    • US10494561
    • 2002-10-18
    • Tae-Sung KimHyuk-soo MoonJong-Kul Lee
    • Tae-Sung KimHyuk-soo MoonJong-Kul Lee
    • B29C65/52C09J4/06C09J5/00C09J7/02C09J201/00H01L21/52B32B31/00
    • C09J7/38B29L2009/00C09J2205/31
    • A melt-flow controlling method for elastomer by uv irradiation for use in semiconductor packages by ultraviolet irradiation, in which a coated polymer composition is crosslinked by ultraviolet irradiation after a coating process of the polymer composition in producing the elastic adhesives. In producing the elastic adhesives for use as the thermal stress relief layer in semiconductor packages, the inventive method comprises irradiating the polymer composition with ultraviolet light of a 100-500 nm wavelength in order to control the flowability and crosslinking degree of the coated polymer composition. Thus, according to the present invention, a heating furnace is not used such that energy consumption can be reduced. Also, curing can be achieved in a short time so as to increase productivity, and the crosslinking degree is easily controlled by changing the ultraviolet dose as compared to the thermal crossliking process. Furthermore, an installation area of ultraviolet irradiation equipment is smaller than the heating furnace, and little or no epoxy reactive groups participate in the crosslinking reaction upon photo-polymerization so that the resulting film product has an excellent storage stability and thus a long life span.
    • 通过紫外线照射在紫外线照射下使用紫外线照射的弹性体的熔体流动控制方法,其中在制备弹性粘合剂的聚合物组合物的涂布工艺之后,通过紫外线照射将涂覆的聚合物组合物交联。 在制造用作半导体封装中的热应力消除层的弹性粘合剂中,本发明的方法包括用100-500nm波长的紫外光照射聚合物组合物,以控制涂覆的聚合物组合物的流动性和交联度。 因此,根据本发明,不使用加热炉,能够降低能量消耗。 此外,可以在短时间内实现固化,从而提高生产率,并且通过与热交叉处理相比,通过改变紫外线剂量来容易地控制交联度。 此外,紫外线照射设备的安装面积小于加热炉,并且在光聚合时很少或没有环氧反应性基团参与交联反应,使得所得膜产品具有优异的储存稳定性并因此具有长的使用寿命。