摘要:
A titanium nitride film is selectively etched relative to a tungsten film by using as an etchant a solution containing hydrochloric acid and a hydrogen peroxide solution, the molar ratio of the hydrogen peroxide in the hydrogen peroxide solution to hydrogen chloride in the hydrochloric acid being 1/100 or less.
摘要:
An etching apparatus includes a chamber containing an etching solution including first and second components and water, a concentration of the water in the etching solution is at a specified level or lower; a circulation path circulating the etching solution; a concentration controller sampling the etching liquid from the circulation path and controls concentrations of the etching solution respectively; and a refilling chemical liquid feeder feeding a refilling chemical liquid including the first component having a concentration higher than the first component in the etching solution.
摘要:
An etching apparatus includes a chamber containing an etching solution including first and second components and water, a concentration of the water in the etching solution is at a specified level or lower; a circulation path circulating the etching solution; a concentration controller sampling the etching liquid from the circulation path and controls concentrations of the etching solution respectively; and a refilling chemical liquid feeder feeding a refilling chemical liquid including the first component having a concentration higher than the first component in the etching solution.
摘要:
An etching apparatus includes a chamber containing an etching solution including first and second components and water, a concentration of the water in the etching solution is at a specified level or lower; a circulation path circulating the etching solution; a concentration controller sampling the etching liquid from the circulation path and controls concentrations of the etching solution respectively; and a refilling chemical liquid feeder feeding a refilling chemical liquid including the first component having a concentration higher than the first component in the etching solution.
摘要:
An etching apparatus includes a chamber containing an etching solution including first and second components and water, a concentration of the water in the etching solution is at a specified level or lower; a circulation path circulating the etching solution; a concentration controller sampling the etching liquid from the circulation path and controls concentrations of the etching solution respectively; and a refilling chemical liquid feeder feeding a refilling chemical liquid including the first component having a concentration higher than the first component in the etching solution.
摘要:
A wafer dry cleaning method and apparatus capable of eliminating or suppressing adhesion of dust and particles on dried wafer surfaces while minimizing generation of water marks thereon. To achive this, the wafer dryer apparatus is configured including a surface cleaning/drying chamber structure which houses therein a set of spaced-apart silicon wafer workpieces. The dry chamber is operatively associated with a vacuum evacuation device for retaining the interior of this chamber at low pressures required. A water-drain device is provided for forcing water content separated off from the wafer surfaces to drain out of the drying vessel. During such wafer drying process, the wafers may be driven rotating at high speeds to thereby accelerate centrifugal spin-off of residual drops of water on wafer surfaces. Preferably, a chosen purge gas may be fed into the chamber during wafer rotation. The purge gas supply gets started substantially simultaneously upon activation of a vacuum pump for chamber evacuation, or after completion of such vacuum evacuation. In one illustrative embodiment ultrapure water may be used to rinse the wafers in the chamber.
摘要:
In one embodiment, an apparatus of treating a surface of a semiconductor substrate comprises a substrate holding and rotating unit, first to fourth supplying units, and a removing unit. A substrate holding and rotating unit holds a semiconductor substrate, having a convex pattern formed on its surface, and rotates the semiconductor substrate. A first supplying unit supplies a chemical onto the surface of the semiconductor substrate in order to clean the semiconductor substrate. A second supplying unit supplies pure water to the surface of the semiconductor substrate in order to rinse the semiconductor substrate. A third supplying unit supplies a water repellent agent to the surface of the semiconductor substrate in order to form a water repellent protective film onto the surface of the convex pattern. A fourth supplying unit supplies alcohol, which is diluted with pure water, or acid water to the surface of the semiconductor substrate in order to rinse the semiconductor substrate. A removing unit removes the water repellent protective film with the convex pattern being left.
摘要:
A method for etching semiconductor wafers in an etching apparatus including an etching bath filled with an etchant and capable of setting liquid temperature and process sequence, comprises selecting a predetermined etching program suitable for etching of the semiconductor wafer, counting the number of the semiconductor wafers to be charged in the etching bath before the etching, calculating a temperature drop of the etchant based on the counted number, setting the liquid temperature of the etchant to an initial temperature B obtained by adding the temperature drop of the etchant to a predetermined etching temperature A, charging the semiconductor wafers in the etching bath at a predetermined timing to etch the semiconductor wafers, and setting the liquid temperature at the predetermined etching temperature A, immediately before or after the liquid temperature reaches the initial temperature B.
摘要:
A method for etching semiconductor wafers in an etching apparatus including an etching bath filled with an etchant and capable of setting liquid temperature and process sequence, comprises selecting a predetermined etching program suitable for etching of the semiconductor wafer, counting the number of the semiconductor wafers to be charged in the etching bath before the etching, calculating a temperature drop of the etchant based on the counted number, setting the liquid temperature of the etchant to an initial temperature B obtained by adding the temperature drop of the etchant to a predetermined etching temperature A, charging the semiconductor wafers in the etching bath at a predetermined timing to etch the semiconductor wafers, and setting the liquid temperature at the predetermined etching temperature A, immediately before or after the liquid temperature reaches the initial temperature B.
摘要:
A filter connectable to an external circulating system, the circulating system being included by a substrate treatment apparatus which etches a substrate with an H3PO4 solution, the filter includes:a chemical feeding port which permits feed of H3PO4 solution containing particles deposited due to etching of a substrate;an H2O adding port which permits the addition of H2O;a filter film which removes the particles from the H3PO4 solution whose heat distribution is made ununiform by the addition of H2O; anda protection member which is disposed between the H2O adding port and the filter film and which protects the filter film from bumping of the H3PO4 solution that is causable by the addition of H2O.
摘要翻译:一种可连接到外部循环系统的过滤器,该循环系统由用H 3 PO 4溶液蚀刻衬底的衬底处理设备包括,该过滤器包括:化学物质进料口,其允许含有由于蚀刻所沉积的颗粒的H 3 PO 4溶液进料 基质; 一个允许加入H 2 O的H 2 O加入口; 通过加入H 2 O使热分布不均匀的H 3 PO 4溶液除去颗粒的过滤膜; 以及保护构件,其设置在H 2 O添加口和过滤膜之间,并且保护过滤膜免于通过加入H 2 O引起的H 3 PO 4溶液的撞击。