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    • 2. 发明授权
    • Vitreous carbon mask substrate for X-ray lithography
    • 用于X射线光刻的玻璃碳掩模基板
    • US07608367B1
    • 2009-10-27
    • US11192797
    • 2005-07-28
    • Georg AigeldingerDawn M. SkalaStewart K. GriffithsAlbert Alec TalinMatthew W. LoseyChu-Yeu Peter Yang
    • Georg AigeldingerDawn M. SkalaStewart K. GriffithsAlbert Alec TalinMatthew W. LoseyChu-Yeu Peter Yang
    • G03F1/00
    • G03F1/22
    • The present invention is directed to the use of vitreous carbon as a substrate material for providing masks for X-ray lithography. The new substrate also enables a small thickness of the mask absorber used to pattern the resist, and this enables improved mask accuracy. An alternative embodiment comprised the use of vitreous carbon as a LIGA substrate wherein the VC wafer blank is etched in a reactive ion plasma after which an X-ray resist is bonded. This surface treatment provides a surface enabling good adhesion of the X-ray photoresist and subsequent nucleation and adhesion of the electrodeposited metal for LIGA mold-making while the VC substrate practically eliminates secondary radiation effects that lead to delamination of the X-ray resist form the substrate, the loss of isolated resist features, and the formation of a resist layer adjacent to the substrate that is insoluble in the developer.
    • 本发明涉及玻璃碳作为基片材料用于提供用于X射线光刻的掩模的用途。 新的基板还能够使用用于图案化抗蚀剂的掩模吸收体的小的厚度,并且这使得能够改善掩模精度。 一个替代实施例包括使用玻璃碳作为LIGA衬底,其中VC晶片坯料在反应离子等离子体中被蚀刻,之后结合X射线抗蚀剂。 该表面处理提供了表面,使得能够良好地粘附X射线光致抗蚀剂并且随后的成核和用于LIGA模制的电沉积金属的粘附,而VC衬底实际上消除了导致X射线抗蚀剂分层的二次辐射效应 衬底,孤立的抗蚀剂特征的损失以及与基底相邻的抗蚀剂层的形成,其不溶于显影剂。