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67results about How to "Uniform line width" patented technology

Method for preparing superconductive nanometer device by negative electron beam resist exposure process

The invention discloses a method for preparing a superconductive nanometer device by a negative electron beam resist exposure process. The method mainly comprises the following steps of: spinning a hydrogen silsesquioxane (HSQ) resist on a superconductive thin film; pre-drying; designing an exposure graph; exposing by two steps; developing; fixing; and etching. By using the method, the superconductive nanometer device which is stable in performance and uniform in line width and has the minimum line width of 15 nm can be prepared. Residues do not exist in an electrode region after the etching step is performed by setting an exposure amount in different regions and changing the thickness of an exposure product in the corresponding region, so that electrical measurement is facilitated. HSQ has high anti-etching performance and is suitable to serve as an etching mask of a hard superconductive metal material, so that the etching selection ratio can be increased. An electrode and the device are obtained through one-time etching; no contact potential difference exists between the electrode and the device; and the success rate of the device is high. Furthermore, a plurality of independent micro electric bridges are exposed on the same thin film, so that the efficiency of integrating and measuring the electric bridges can be improved, and the material utilization rate is increased; and the superconductive nanometer device has great significance for research on nanometer structures made of rare materials.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

Pattern forming method

A pattern forming method comprises the steps that a film layer and an etching barrier layer placed on the film layer are formed on a substrate; a plurality of first patterns, which are arrayed in parallel at equal intervals, of a first line are formed on the etching barrier layer; a second line is formed on the side wall of the first line, wherein the line width of the second line is equal to the line width of the first line, and the second line is made of materials different from that of the first line; a third line is formed in the side wall of the second line, and the line width of the third line is equal to the line width of the first line; a fourth line is arranged on the side wall of the third line in an epitaxial growth mode, the line width of the fourth line is equal to the line width of the first line, and the fourth line is made of materials different from that of the third line; the parts, which are not covered with the first line, the second line, the third line and the fourth line, of the etching barrier layer are removed to expose the film layer; a fifth line is arranged on the film layer in an epitaxial growth mode, and the fifth line is made of materials different from that of the fourth line; the second line and the fourth line are removed, and the patterns which are finally formed comprise the first line, the second line and the fifth line. The patterns have even array density and a good line width, and therefore a semiconductor device formed by the patterns is good in performance.
Owner:SEMICON MFG INT (SHANGHAI) CORP

Mask plate, splicing exposure method and substrate

The invention relates to a mask plate, a splicing exposure method and a substrate, and the mask plate comprises: a first mask plate which is provided with a first shading region which comprises a first non-splicing segment and a first splicing segment, wherein the first non-splicing segment and the first splicing segment are connected with each other in a first direction; a second mask plate whichis provided with a second shading area, wherein the second shading area comprises a second non-splicing segment and a second splicing segment which are connected with each other in the first direction, the line widths of the first non-splicing segment and the second non-splicing segment in the second direction are equal, and the previous projection of the first non-splicing segment on the planewhere the film layer to be exposed is located and the later projection of the second non-splicing segment on the plane where the film layer to be exposed is located are staggered in the second direction, the line width of at least one of the first splicing segment and the second splicing segment is greater than that of the first non-splicing segment, the first direction and the second direction are perpendicular to each other and parallel to the mask plate. Therefore, the line widths of the virtual patterns formed on the photoresist layer at all positions are equal, and the line widths of thefinally formed metal patterns are ensured to be equal.
Owner:YUNGU GUAN TECH CO LTD

Semiconductor package substrate fabrication method

An integrated circuit substrate having embedded lands with etching and plating control features provides improved manufacture of a high-density and low cost mounting and interconnect structure for integrated circuits. The integrated circuit substrate is formed by generating channels in a dielectric material, adding conductive material to fill the channels and then planarizing the conductive material, so that conductors are formed beneath the surface of the dielectric material. Lands are formed with feature shapes that reduce a dimpling effect at etching and / or an over-deposit of material during plating, both due to increased current density at the relatively larger land areas. Feature shapes may be a grid formed with line sizes similar to those employed to form conductive interconnects, so that all features on the substrate have essentially the same line width. Alternatively, and in particular for circular pads such as solderball attach lands, sub-features may be radially disposed around a central circular area and connected with channels formed as interconnect lines that connect the sub-features to the central circular area. Connection of the lands may be made using vias or by other conductive channels forming electrical interconnect lines.
Owner:AMKOR TECH SINGAPORE HLDG PTE LTD
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