摘要:
With a stage kept in an as-heated state, a semiconductor wafer is placed over the stage. Then, with the elapse of a first time, a controller causes a pressure inside a vacuum chamber to rise to a second pressure higher than a first pressure (step S40). After the semiconductor wafer is placed over the stage, a pressure difference between a pressure inside the vacuum chamber and a pressure inside an adsorption port is set to a minimum value at which the semiconductor wafer is not allowed to slide over protrusions. Further, in step S40 as well, the pressure difference is kept at the minimum value at which the semiconductor wafer is not allowed to slide over the protrusions.
摘要:
The present invention provides a resin composition comprising a liquid crystal polyester and a titanium oxide filler, wherein when a value obtained by converting the content of aluminum in the titanium oxide filler to the content of aluminum oxide is A (% by weight) and the volume average particle diameter of the titanium oxide filler is B (μm), A and B satisfy the formula (I): A≧0.1 and the formula (II): A/B2≦25, a reflective board obtained by molding the resin composition, and a light-emitting apparatus comprising the reflective board and a light-emitting element. According to the resin composition of the present invention, a reflective board having high reflectance and high heat resistance can be obtained. Furthermore, a light-emitting apparatus which is excellent in properties such as luminance can be obtained by using the reflective board.
摘要:
A method is provided for manufacturing a liquid crystal polyester molded body by molding a liquid crystal polyester composition using a molding machine containing a cylinder, a screw and a heater. The screw is provided inside the cylinder, and is composed of a feed section, a compression section, and a metering section, the feed section and the compression section of the screw are composed of a single flight, the heater is provided on the outer periphery of the cylinder. The liquid crystal polyester composition contains a liquid crystal polyester and a polyamide resin. The method for manufacturing the polyester molded body includes: a step of melting and metering the liquid crystal polyester composition, a step of tightening a mold and performing mold clamping, a step of injecting the melted liquid crystal polyester composition into the mold, and a step of extracting the solidified resin from inside the mold.
摘要:
The present invention provides a resin composition comprising a liquid crystal polyester and a titanium oxide filler, wherein when a value obtained by converting the content of aluminum in the titanium oxide filler to the content of aluminum oxide is A (% by weight) and the volume average particle diameter of the titanium oxide filler is B (μm), A and B satisfy the formula (I): A≧0.1 and the formula (II): A/B2≦25, a reflective board obtained by molding the resin composition, and a light-emitting apparatus comprising the reflective board and a light-emitting element. According to the resin composition of the present invention, a reflective board having high reflectance and high heat resistance can be obtained. Furthermore, a light-emitting apparatus which is excellent in properties such as luminance can be obtained by using the reflective board.
摘要:
A pressure loss section H1 (H2) extends from a position corresponding to a corner of a resin package, and S1 is the minimum value of the opening area of the pressure loss section H1 (H2) perpendicular to the direction of resin flow (X axis) in the pressure loss section H1 (H2) during resin molding, while S2 is the average value of the opening areas of excess resin reservoirs H3 to H5 perpendicular to the direction of resin flow (Y axis) within excess resin reservoir H3 to H5 during molding. In this lead frame, S1
摘要:
Granules useful for highly thermal-conductive resin composition are provided. The Granules have a number average particle diameter of 0.5 to 5 mm, obtained by granulating fibers mainly containing fibers selected from alumina fibers and carbon fibers, wherein the fibers to be granulated have a number average fiber diameter of 1 to 50 μm.
摘要:
The present invention provides a conductive resin composition comprising a liquid crystalline polyester which comprises the following structure units having the formulas (i), (ii) and (iii), and has an aromatic group having 2,6-naphthalenediyl group in a ratio of not less than 5% by mole; and at least one filler selected from a metal oxide conductive filler and a carbon conductive filler. According to the present invention, the composition is easy to mold and can give molded products having high hydrolysis resistance. The resulting molded products are hardly to lower the strength even if they are exposed to high temperature and humid condition, and can be suitably used for a separator in a fuel cell.
摘要:
It is an object of the present invention to provide A laser device of long life. In the laser device, light source is housed in transparent cooling vessel, and the vessel is filled with a cooling liquid which is circulated. The electrodes of the light source project out of the cooling vessel. Reflectors are provided outside the cooling vessel. The electrodes and the reflectors are out of contact with the cooling liquid.It is another object of the present invention to stabilize laser oscillation. A light source is housed in a first transparent cooling vessel. The first cooling vessel is filled with a first cooling liquid. A laser medium is housed in a second transparent cooling vessel. The second cooling vessel is filled with a second cooling liquid. A heat insulation layer is provided between the first and the second cooling vessels so that the first and the second cooling liquids are thermally insulated from each other.
摘要:
The method for producing a resin package according to the present invention includes a step of forming a copper oxide layer by oxidizing the surface of a lead frame in which at least the surface is made of copper, and a step of forming a resin package main unit by allowing a resin to adhere to the copper oxide layer on the lead frame surface by resin molding for package, and then removing a predetermined area of the copper oxide layer with an acidic solution.
摘要:
The present invention provides a resin composition comprising: (A) a thermoplastic resin, (B) a granular material which has a number average particle diameter of 0.5 to 5 mm and is obtainable by granulating a fiber mainly having alumina with a number average fiber diameter of 1 to 50 μm, and (C) a filler composed of a material of which electric resistivity at 300 K is 102 Ωm or less. The resin composition can be molded into a molded article with electric insulation. The electric resistivity of the molded article has sufficient electric insulation in applications such as in electric and electronic parts.