Abstract:
PROBLEM TO BE SOLVED: To provide a fine structure by etching a substrate having a region covered with self-assembly monomolecule(SAM). SOLUTION: A wet etching system for selectively forming a pattern on the substrate having the region covered with SAM and controlling an etching profile, includes (a) a fluid etching solution, and (b) additives having higher affinity for the region covered with the SAM than for the other region. The method for selectively forming the pattern on the substrate having the region covered with the SAM and controlling the etching profile, includes (a) a step of providing a fluid etching solution, (b) a step of adding the additives having the higher affinity for the region covered with SAM than for the other region to the above etching solution, and (c) a step of etching the above substrate with the above fluid etching solution containing the above additives.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of forming a pattern on an article (10) made of a copper layer (12) formed on an insulating substrate (11) by means of a novel positive microcontact printing (MCP) process. SOLUTION: A natural oxide present on a Cu layer is removed in HCl solution. Then, an inking layer (15') is formed on a stamp (13') consisting of a polydimethyl siloxane object (14) with a pattern formed by inking it for one minute in 0.2 mM ethanol solution of pentaerythritol-tetrakis. This stamp is applied to the Cu layer, and a first self-assembly monomolecular layer (SAM) (16') is printed according to a desired pattern. The article is soaked in ECT solution. The ECT is adsorbed only in a non-printed region, and the second SAM (18) of a complementary shape to the desired pattern is formed. Finally, the printed region on the Cu layer is removed by means of a peroxodisulfate etching bath. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a patterning mask enabling formation of a pattern with increased precision. SOLUTION: Regarding the patterning mask 6 having a substantially planar patterned printing layer 2, the printing layer 2 has a substantially non-elastic stencil layer 3 and a substantially elastic seal layer 4 fixed on the stencil layer 3. The seal layer 4 performs a function of a seal in regard to a liquid, viscous or gaseous material 7 that can be filled on a base 5 through the patterned printing layer 2 when the layer 4 is in contact with the base 5. Moreover, the mask may have a mesh layer. The mesh layer has openings isolated by a solid element and having a two-dimensional regular pattern and rigidity can be given to the mesh plane thereof.
Abstract:
Methods for electroless deposition of conductive material on a substrate using in both cases a stamp having a patterned surface which is pressed onto the surface of a substrate for printing the substrate and providing a pattern of a catalyst on the substrate on which metal deposition occurs in the course of electroless deposition by immersing the printed substrate in a plating bath are provided. In one case, the stamp is pretreated to render the pattern of the stamp wettable with a catalytic ink which is transformed to the surface of the substrate. In the other case, a catalytic layer is provided on the surface of the substrate which is patterned by the stamp transferring a resist material onto the catalytic layer so that a subsequent etching process lays open the desired pattern of the catalytic layer for electroless deposition.
Abstract:
Methods for electroless deposition of conductive material on a substrate using in both cases a stamp having a patterned surface which is pressed onto the surface of a substrate for printing the substrate and providing a pattern of a catalyst on the substrate on which metal deposition occurs in the course of electroless deposition by immersing the printed substrate in a plating bath are provided. In one case, the stamp is pretreated to render the pattern of the stamp wettable with a catalytic ink which is transformed to the surface of the substrate. In the other case, a catalytic layer is provided on the surface of the substrate which is patterned by the stamp transferring a resist material onto the catalytic layer so that a subsequent etching process lays open the desired pattern of the catalytic layer for electroless deposition.
Abstract:
Methods for electroless deposition of conductive material on a substrate using in both cases a stamp having a patterned surface which is pressed onto the surface of a substrate for printing the substrate and providing a pattern of a catalyst on the substrate on which metal deposition occurs in the course of electroless deposition by immersing the printed substrate in a plating bath are provided. In one case, the stamp is pretreated to render the pattern of the stamp wettable with a catalytic ink which is transformed to the surface of the substrate. In the other case, a catalytic layer is provided on the surface of the substrate which is patterned by the stamp transferring a resist material onto the catalytic layer so that a subsequent etching process lays open the desired pattern of the catalytic layer for electroless deposition.