摘要:
In the present invention there is formed a sheet-like board member 50 having conductive coating films, such as first pads 55 and die pads 59, formed thereon or a sheet-like board member 50 which has been half-etched by using conductive coating films such as first pads 55 and die pads 59. A hybrid IC can be manufactured by means of utilization of post-processing processes of a semiconductor manufacturer. Further, a hybrid IC can be manufactured without adoption of a support board, and hence there can be manufactured a hybrid IC which is of lower profile and has superior heat dissipation characteristics.
摘要:
A measurement apparatus for ulcerative colitis diagnosis and prognostic test according to the present invention comprises a solution mixing unit (15) for mixing an eluent and a quinone solution, the eluent being supplied from a system including a tank (9) in which the eluent used for acid separation is stored, a pump (12) for sending the eluent, a sample injection unit (13) for injecting a sample into the eluent, and an acid separation column (14) for separating short-chain fatty acids included in the sample that is injected from the sample injection unit (13), and the quinone solution being supplied from a system including a tank (8) in which the quinone solution containing quinone and supporting electrolyte is stored, and a pump (11) for sending the quinone solution; and an acid degree measurement unit (16) for measuring the acid degrees of the short-chain fatty acids separated from the sample. In the measurement apparatus for ulcerative colitis diagnosis and prognostic test which is constructed as described above, it is possible to perform ulcerative colitis diagnosis speedily, easily, and accurately, without performing blood test.
摘要:
The overflow of a brazing material (19) from a die pad (11) is prevented by forming a second plating film (14B) on the surface of the die pad (11). The second plating film (14B) is provided around the surface of the die pad 11 so as to enclose an area where a semiconductor element (13) is mounted. In a step of mounting the semiconductor element (13) on the die pad (11) with the brazing material (19), the brazing material (19) overflows from the first plating film (14A) when the semiconductor element (13) is mounted on the upper part of the molten brazing material. However, the second plating film (14B) functions as a blocking area by which the overflow of the brazing material is prevented. Therefore, a short circuit can be prevented from arising between the die pad (11) and the bonding pad (12) because of the brazing material that has spread.
摘要:
A device containing a flat member is provided, having a pattern for a bonding pad, a wiring, and an electrode, by half-etching through the flat member.
摘要:
As conductive patterns 11A to 11D are formed burying in a insulating resin 10 and a conductive foil 20 is formed being half-etched, thickness of the device is made thin. As an electrode for radiation 11D is provided, a semiconductor device superior in radiation is provided.
摘要:
The back surface of a semiconductor chip (16) is exposed from the back surface of an insulating resin (13), and a metal plate (23) is affixed to this semiconductor chip (16). The back surface of this metal plate (23) and the back surface of a first supporting member (11) are substantially within a same plane, so that it is readily affixed to a second supporting member (24). Accordingly, the heat generated by the semiconductor chip can be efficiently dissipated via the metal plate (23) and the second supporting member (24).
摘要:
Provided is a circuit device having conductive patterns which are equally spaced apart and a manufacturing method thereof. A method for manufacturing a circuit device of the present invention includes the steps of: preparing a conductive foil; forming conductive patterns, which are included in a unit having at least regions for mounting circuit elements, by forming isolation trenches having a uniform width in the conductive foil; electrically connecting the conductive patterns to the circuit elements; sealing with a sealing resin so as to cover the circuit elements and to be filled in the isolation trenches; and removing the conductive foil in its thickness portions where no isolation trenches are provided.
摘要:
A substrate for an information recording medium has a microwaviness average height Ra′ not greater than 0.05 microinch as measured by a contactless laser interference technique for measurement points within a measurement region of 50 μm□-4 mm□ on a surface of the substrate. The microwaviness average height Ra′ is given by: Ra ′ = 1 n ∑ i = 1 n | xi - x _ | , where xi represents a measurement point value of each measurement point, {overscore (x)} representing an average value of the measurement point values, n representing the number of said measurement points. Alternatively, the substrate has a waviness period between 300 μm and 5 mm and a waviness average height Wa of 1.0 nm or less as measured by the contactless laser interference technique for measurement points in a measurement region surrounded by two concentric circles which is spaced from a center of a surface of the substrate by a predetermined distance. The waviness average height Wa is given by: Wa = 1 N ∑ i = 1 N | Xi - X _ | where Xi represents a measurement point value of each measurement point, {overscore (X)} representing an average value of the measurement point values, n representing the number of said measurement points.
摘要:
A heat radiation electrode (15) is exposed from the back surface of an insulating resin (13), and a metal plate (23) is affixed to the heat radiation electrode (15). The back surface of this metal plate (23) and the back surface of a first supporting member (11) are substantially within a same plane, so that it is readily affixed to a second supporting member (24). Accordingly, the heat generated by the semiconductor chip can be efficiently dissipated via the heat radiation electrode (15), the metal plate (23) and the second supporting member (24).
摘要:
A process for treating a high temperature corrosion resistant composite surface is disclosed. The process includes the steps of forming a first alloy layer by coating a metallic base material with a NiCr alloy or a MCrAlY alloy (M being made of one or more selected from the group consisting of Fe, Ni and Co) with low pressure plasma spraying, forming a second alloy layer on the first alloy layer by coating the first layer with an alloy having identical composition with atmospheric plasma spraying and then subjecting these layers to thermal diffusion treatment in a vacuum furnace or an inert gas atmosphere furnace. Thus, high temperature corrosion resistance is provided for a metallic material used at high temperatures.