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    • 6. 发明授权
    • Technique for preparing a photo-mask for imaging three-dimensional
objects
    • 制备用于成像三维物体的光罩的技术
    • US5178976A
    • 1993-01-12
    • US580058
    • 1990-09-10
    • James W. RoseBradley R. KarasLubomry S. Onyshkevych
    • James W. RoseBradley R. KarasLubomry S. Onyshkevych
    • G03F1/00H05K1/00H05K3/00
    • H05K3/0002G03F1/70H05K1/0284H05K2203/056H05K2203/107
    • A method for the preparation a photo-mask used for photo-imaging selected areas on the surfaces of a three-dimensional printed circuit board substrate. The photo-mask comprises an opaque layer, opaque and degradation resistant to UV light, having at least one side with a contoured shape conforming to the surface irregularities on the surfaces of the three-dimensional substrate being photo-imaged. A membrane transparent and degradation resistant to UV light, having at least one side cemented to the side of the opaque layer not in contact with the surfaces of the three-dimensional substrate being photo-imaged. A pattern of grooves positioned on the opaque layer allow transmission of UV light during the photo-imaging of the surfaces of the three-dimensiional substrate. The pattern of grooves is in accordance with a conductive metal trace pattern desired on the surfaces of the three-dimensional printed circuit board substrate. The photo-mask is prepared by first forming an opaque material layer on the surfaces of the three-dimensional substrate, followed by a membrane material to form the membrane. The pattern of grooves is created by ablating the opaque layer in selected areas by means of a laser beam from a laser moved in a boustrophedonous manner.
    • 一种用于制备用于对三维印刷电路板基板的表面上的选定区域进行光学成像的光掩模的方法。 所述光掩模包括不透明的并且对UV光具有耐劣化性的不透明层,其具有至少一个侧面,所述至少一个侧面具有与所述三维基板的表面上的表面不规则性相一致的光学成像。 具有至少一面粘合到不透明层的不与三维基板的表面接触的一面的紫外光透明和降解的膜被光成像。 定位在不透明层上的凹槽的图案允许在三维基底的表面的光成像期间透射UV光。 凹槽的图案与三维印刷电路板基板的表面上所需的导电金属迹线图案相一致。 通过首先在三维基板的表面上形成不透明材料层,然后形成膜材料来制备光掩模。 凹槽的图案通过借助于以双向方式移动的激光器的激光束烧蚀选定区域中的不透明层而产生。