Abstract:
PROBLEM TO BE SOLVED: To allows forming of minute grooves, even when forming the many minute grooves on a substrate having a stepped structure, to equalize depths with each other in each of step parts and groove parts of the stepped structure.SOLUTION: In a method of manufacturing a master mold 10 and a surface processing method, on a substrate 1 having a stepped structure 2, a resist film 3 is formed so that thicknesses tand tof the resist film 3 in each of step parts 2a and groove parts 2b of the stepped structure 2 satisfy a predetermined requirement and a difference between them becomes small. A pattern corresponding to a rugged structure 12 to be formed is drawn on the resist firm 3 by use of an electron beam drawing device. After developing the drawn resist film 3, the substrate 1 is etched while using the resist firm 3 as a mask.
Abstract:
PROBLEM TO BE SOLVED: To produce a master mold at higher throughput.SOLUTION: This invention relates to: a method of producing a master mold 10; and a surface treating method. The method of producing the master mold includes: subjecting a substrate 1 to hydrothermal treatment to form a fine uneven structure 20a on a surface of an aluminum thin film 2 that comprises at least one of aluminum, aluminum nitride, and an aluminum alloy, wherein the substrate 1 has a surface S to be treated and further has the aluminum thin film 2 formed on the surface S to be treated; and thereafter etching the aluminum thin film 20 and the substrate 1 from a side of the aluminum thin film 20 to remove substantially the whole aluminum thin film 20.
Abstract:
PROBLEM TO BE SOLVED: To provide a chemical amplification resist composition to be used for the preparation of a mold, capable of forming a pattern excellent not only in sensitivity and resolution, but also in the line width roughness (LWR) performance, in preparation of a mold. SOLUTION: The chemical amplification resist composition contains a resin which is decomposed by an action of a specified acid to increase the solubility with an alkali developing solution, and a mold preparation method and a resist film each using the composition are also disclosed. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a stamper original plate capable of forming grooves having depths different from each other in a substrate which constitutes the stamper original plate in a short time. SOLUTION: The manufacturing method of stamper original plate 50 includes a step for forming a negative resist layer 52 on a silicon wafer 51, a step for partially irradiating the negative resist layer 52 with an electron beam, a step for removing a non-exposed part 52B by development, a step for forming a positive resist layer 53 on the silicon wafer 51 on which a portion of the negative resist layer 52 remains, a step for drawing a prescribed pattern to the positive resist layer 53 by using the electron beam, a step for removing an exposed part by development and a step for performing reactive ion etching to the exposed silicon wafer 51 and the surface of the negative resist layer 52 to form a rugged shape having grooves 51a and 51b having depths different from each other on the surface of the silicon wafer 51. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To more easily adjust a transmittance for light of a light-shielding film to a desired value.SOLUTION: A drawing target substrate S1 is prepared, which is composed of a transparent substrate 10, a light-shielding film 11 formed on the transparent substrate 10, and a resist film 12 formed on the light-shielding film 11. Dots 12a having a dot density value corresponding to a desired transmittance for light of a light-shielding mask 1 are drawn on the resist film 12 with an electron beam B; the resist film 12 after dots are drawn is developed; the light-shielding film 11 is etched with an etching gas G by using the developed resist film 12 as an etching mask; and the remaining resist film 12 is removed.
Abstract:
PROBLEM TO BE SOLVED: To improve positioning accuracy of a pattern in the circumferential direction in an electron beam lithography method to conduct pattern drawing by irradiation of an electron beam. SOLUTION: Among variations of encoder signals from an encoder occurring within one rotation of a rotating stage in pattern drawing, a fixed frequency component commonly appearing in a plurality of rotations with the number of rotations different from one another, is compensated by deflection correction of the electron beam in the circumferential direction, and among variations of the encoder signal, a variable frequency component other than the fixed frequency component is compensated by varying the clock frequency of a drawing clock. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To shorten the micropattern drawing time in an electron beam drawing method of drawing a desired micropattern on a resist by means of an electron beam. SOLUTION: In the electron beam drawing method of drawing a desired micropattern on a substrate 10 having a resist 11 applied thereon and installed on a rotating stage 41, by the scanning of an electron beam EB, while making the rotating stage 41 rotate, the rotation of the rotating stage 14 is controlled so that the rotation speed is higher for drawing on inner peripheral tracks and lower for drawing on outer peripheral tracks which is inversely proportional to the radius of drawing positions, to fix a linear speed of micropattern drawing in radial positions of the rotating stage 41, and the resist 11 is pre-exposed, prior to the drawing of micropattern. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To fast and dynamically change an exposure dose of an electron beam which is made thinner so as to draw a fine image with an electron beam. SOLUTION: An electron beam drawing method includes exposing a substrate having a photosensitive layer by moving an electron beam in a drawing direction. The substrate 1 is irradiated with the electron beam while the electron beam is subjected to blanking at a predetermined blanking frequency, as well as the electron beam is relatively moved to oscillate forward and backward in the drawing direction. The movement of oscillation forward and backward is carried out at a frequency higher than the blanking frequency. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To manufacture a stamper original plate for an optical information recording medium having two or more fine rugged shapes, and also to manufacture a stamper. SOLUTION: A resist layer 52 is formed on a silicon wafer 51, the resist layer 52 is irradiated with an electron beam to form a prescribed pattern, the resist layer 52 is developed to remove a part irradiated with the electron beam and reactive ion etching is performed to the surface of the silicon wafer 51 exposed by development, so that the two or more rugged shapes having ≤60 nm depths different from each other are formed on the surface of the silicon wafer 51. COPYRIGHT: (C)2008,JPO&INPIT