According to the present invention, there are provided an insulating film for an organic EL element, which has sufficiently low water permeability and a good sectional form and whose reactivity with a basic material and an electrode made from a metal having a low work function is suppressed, an insulating film for an organic EL element, which enables the formation of a through hole or U-shaped cavity therein and has excellent flattening performance, high transparency and high resistance to a resist stripper, and a radiation sensitive resin composition for forming the insulating film.
An organic EL display element having this insulating film is free from an emission failure and has sufficiently long luminance half-life period and excellent reliability.
The above composition comprises an alkali-soluble resin which may have an epoxy group and a 1,2-quinonediazide compound.
根据本发明,提供了一种有机电致发光元件用绝缘膜,它具有足够低的透
水性和良好的断面形状,并能抑制其与基本材料和低功函数
金属制成的电极的反应性;还提供了一种有机电致发光元件用绝缘膜,它能在其中形成通孔或U形腔,并具有优异的扁平化性能、高透明度和高抗抗蚀剂剥离性;还提供了一种用于形成绝缘膜的辐射敏感
树脂组合物。
具有这种绝缘膜的有机电致发光显示元件不会出现发射故障,并具有足够长的亮度半衰期和出色的可靠性。
上述组合物包括一种可具有环氧基团的碱溶性
树脂和一种 1,2-醌
噻嗪化合物。