摘要:
An integrated circuit leadframe is specially adapted to adhere to injection mold cleaning compounds in the area of vents for an injection mold. An area of a leadframe rail that is normally positioned adjacent a mold vent is provided with apertures, surface roughness or a surface coating to cause the cleaning compound to more tightly adhere to the leadframe rail. As a result, cleaning compound flash is removed from the vents when the leadframe is removed from the mold.
摘要:
Apparatus for cleaning a surface of a substrate includes a cooling device, which is adapted to cool a region of the substrate in a vicinity of a particle on the surface, so as to cause a fluid in contact with the surface to form a frozen film in the vicinity of the particle. A radiation source is adapted to direct a beam of energy toward the surface so as to cause vaporization of the film due to absorption of the beam in the film, thereby facilitating removal of the particle from the surface.
摘要:
An apparatus and method are provided for removing contaminate particulate matter from substrate surfaces such as semiconductor wafers. The method and apparatus use a material, preferably a liquid curable polymer, which is applied as a sacrificial coating to the surface of a substrate containing contaminate particulate matter thereon. An energy source is used to dislodge the contaminate particulate matter from the surface of the wafer into the sacrificial coating so that the particles are partially or fully encapsulated and suspended in the sacrificial coating. The sacrificial coating is then removed. The coating is preferably formed into a film to facilitate removal of the coating by pulling (stripping) the film providing a cleaner substrate surface.
摘要:
An integrated circuit leadframe is specially adapted to adhere to injection mold cleaning compounds in the area of vents for an injection mold. An area of a leadframe rail that is normally positioned adjacent a mold vent is provided with apertures, surface roughness or a surface coating to cause the cleaning compound to more tightly adhere to the leadframe rail. As a result, cleaning compound flash is removed from the vents when the leadframe is removed from the mold.
摘要:
This invention provides a method for chamber conditioning with deposition mode. The method includes performing organic gas introduced constantly into a chamber, wherein said organic gas comprises halogen. Adhesive polymers are formed from said organic gas and particles in the chamber, and deposited onto the wall of the chamber to form heavy polymers subsequently. It is necessary to make a similar chamber condition for manufacturing every batch of wafer. In other words, the development of a non-ignored pollution problem, which is increasing with batches of the manufacturing of wafers will not occur. By using said method of deposition mode, it is speedily and easy to decrease the amount of particles in the chamber for the requirement for wafer manufacturing.
摘要:
A method for removing a stain from a surface of a structure which includes the steps of spraying an aggregating agent comprising a cationic linear organic polymer onto the surface of such structure having a stain produced thereon, dissociating the stain particles by use of Coulomb force f generated between the stain particles and the aggregating agent, displacing slightly the stain particles along the surface of the structure to cause peeling thereof from the surface to be cleaned, and simultaneously, aggregating the same for cleaning. Another embodiment includes maintaining water permeability of a road by easily eliminating a stain adhering to the surfaces of granular aggregate particles forming a drainage-type pavement layer of a road without the use of various mechanical tools. Other embodiments include the steps of depositing an aggregating agent for soil improvement comprising a cationic organic polymer onto a drainage-type pavement layer of a road, and eliminating the aggregated stain particles adhering to the surfaces of the granular aggregate particles constituting the drainage-type pavement layer and settling in voids.
摘要:
Pasty solution 5 made by dissolving membrane-forming polymer 2 and plasticizer 3 in water 4 is applied to wall surface 1 in the form of liquid film 6. The plasticizer 3 improves flexibility and elongation of membrane formable by the membrane-forming polymer. Dirt substance 8 on the wall surface 1 is caused to adhere to the liquid film 6. Water 4 of the liquid film 6 is allowed to evaporate gradually so as to turn the liquid film 6 into flexible membrane 7 which is peelable intact. After dried, the flexible membrane 7 is peeled off intact from the wall surface 1 while carrying the dirt substance 8 adhering thereto.
摘要:
A marble and brick surface restoring composition comprising a mixture of trisodium phosphate, talc and sugar, which is prepared by dissolving the trisodium phosphate in boiling water to which is added the talc and sugar to form a paste. The paste is applied to the surface to be restored by a suitable applicator such as a brush or trowel; the coated surface is covered with a thin plastic sheet and the coating is allowed to set. The composition is removed from the restored surface by a squeegee and the surface is rinsed with water or steam.When restoring detailed surfaces, such as headstones, cheese cloth is first wrapped around the surface and the paste is sprayed thereon to form a poultice which is covered with a thin plastic sheet. After setting, the poultice is peeled from the surface and the restored surface is rinsed with water or steam.
摘要:
A composition for removing iron deposits, rust, or metallic particles from a surface, the composition including: at least one reducing agent; at least one chelating agent that changes color upon chelation; and at least one solvent.