摘要:
An EUV pellicle is proposed in which the pellicle frame is made of a material having a linear expansion coefficient of 10 x 10 -6 (1/K) or smaller, and as such this pellicle is recommendable for use in EUV exposure technology wherein temperature is raised and lowered repeatedly and hence the expansion and contraction of the pellicle frame would harm the pellicle membrane and the pellicle flatness.
摘要:
Here are disclosed a pellicle for EUV and an assembly made up of this pellicle and a mask, which brings about a projection of low contrast (intensity) shadows of a mesh structure on the mask, thus minimizing the adverse effect of the shadow on the lithographic printing; also a method for assembling such assembly is disclosed wherein the pellicle is rotated relative to the mask to minimize the shadow contrast, in terms of a contrast ratio, of the mesh structure; the angle of the rotation is 30 degrees or smaller, and the resultant contrast ratio should be 25 % or lower.
摘要:
A pellicle was well as an assembly of photomask plus pellicle is proposed in which the conventional agglutinant layer which bonds the pellicle to photomask is replaced by male and female screws and elastic body layer; in particular the pellicle frame is screwed to the photomask while the sealing of the space within the pellicle frame is secured by the elastic body layer.
摘要:
A pellicle is proposed in which the frame is made of an aluminum alloy and at least the inner wall of the frame is entirely coated with a pure aluminum layer, which preferably has a purity of 99.7% or higher and a thickness of 3 through 50 micrometers; the pellicle frame with the pure aluminum layer may be subjected to anodic oxidation treatment, electric coloring, and void filling, and a resin layer can be formed as the outermost layer.
摘要:
There is provided a pellicle wherein the frame is cut with one or more slight-chamfers, and in particular the one cut along the inner edge of the upper annular face of the frame, to which the pellicle membrane is glued, has a slope greater than 45 degrees so that the pellicle membrane when slackened does not touch the lower ridge of the slight chamfer.
摘要:
The purpose is to provide a pellicle which has a mask adhesive layer that can be plastic-deformed readily particularly at a temperature at which exposure to light is carried out, rarely remains an adhesive agent upon the removal of the mask adhesive layer from a mask and has good handling properties, and which can prevent the position gap of a pattern. For achieving the purpose, a pellicle (10) is provided, which comprises a pellicle frame (14), a pellicle membrane (12) and a mask adhesive layer (15) containing a mask adhesive agent. The mask adhesive agent comprises 100 parts by mass of a thermoplastic elastomer (A) having a tand peak temperature of -20 to 30 DEG C and 20 to 150 parts by mass of an adhesiveness-imparting resin (B).
摘要:
A pellicle frame is provided that includes a pellicle frame bar having a cross-section with a shape that has at least one triangular recess in at least one side edge of a quadrilateral having an upper edge and a lower edge parallel to each other and a cross-sectional area of no greater than 20 mm 2 . There is also provided a lithographic pellicle that includes a pellicle film stretched over one end face of the pellicle frame via a pellicle film adhesive, and that includes an exposure master plate adhesive on the other end face.
摘要:
A pellicle for lithography, in which an agglutinant layer is so controlled that the deformation of the pellicle frame is prevented from transferring to an exposure original plate to which the pellicle is attached so that pattern transferred scarcely undergoes deformation; in particular the agglutinant layer has a Young's modulus of 0.02 to 0.08 MPa and a tensile bond strength of 0.04 to 0.08 N/mm 2 .
摘要翻译:一种用于平版印刷的防护膜,其中粘合剂层被如此控制,使得防护膜框架的变形不会转移到附着有防护膜的曝光原版上,从而图案几乎不转变; 特别是粘合剂层具有0.02至0.08MPa的杨氏模量和0.04至0.08N / mm 2的拉伸粘合强度。
摘要:
[Object] To improve the performance of a filter for a vent hole, which penetrates a pellicle frame, in response to a reduction in the maximum allowable size of foreign matter, which is required especially in EUV exposure, and to a severe change in atmospheric pressure to which a pellicle film is to be exposed. [Solution] A pellicle according to the present invention includes: a pellicle frame 3; a pellicle film 1 provided on an upper end surface of the pellicle frame; a vent hole 6 provided in the pellicle frame; and a filter 7 that closes the vent hole. The filter includes a non-woven fabric composed partly or entirely of at least one of nanofibers and carbon nanotubes.