摘要:
A technology that achieves a highly uniform temperature distribution on the surface of large-area semiconductor wafers and substrates for liquid crystals without prior measurement of the resistance-heating-element circuit and subsequent adjustment of the value of resistance. At least one current-receiving point 4 and at least one current-releasing point 5 are provided at the central portion of an insulating substrate 1. One or more resistance-heating-element circuits 2 are embedded in the insulating substrate spirally or pseudospirally from the central portion including the current-receiving point 4 to the peripheral portion of the insulating substrate 1. All the circuits merge with one another at the outermost portion. One or more resistance-heating-element circuits are separated at the outermost portion of the resistance-heating-element circuits and are formed spirally or pseudospirally from the outermost portion to the central portion including the current-releasing point 5.
摘要:
A surface acoustic wave device includes at least diamond, a single crystal LiNbO.sub.3 layer formed on the diamond, and an interdigital transducer formed in contact with the LiNbO.sub.3 layer and uses a surface acoustic wave (wavelength: .lambda..sub.n .mu.m) in an nth-order mode (n=1 or 2). When the thickness of the LiNbO.sub.3 layer is t.sub.1 (.mu.m), kh.sub.1 =2.pi.(t.sub.1 /.lambda..sub.n) and the cut orientation (.theta., .PHI., and .psi. represented by an Eulerian angle representation) with respect to the crystallographic fundamental coordinate system of the LiNbO.sub.3 layer are selected from values within specific ranges. Consequently, a surface acoustic wave device which increases the propagation velocity (V) of a surface acoustic wave and improves the electromechanical coupling coefficient (K.sup.2) is realized.
摘要:
The invention provides a semiconductor element mounting substrate that, by virtue of an improvement in thermal conduction efficiency between the substrate and another member, can reliably prevent, for example, a light emitting element such as a semiconductor laser from causing a defective operation by heat generation of itself, by taking full advantage of high thermal conductivity of a diamond composite material. In the semiconductor element mounting substrate, a connecting surface to be connected with the light emitting element or the like is finished such that the number, per unit area, of at least either recesses or protrusions having a depth or height of 10 μm to 40 μm and a surface-direction diametrical size of 10 μm to 3 mm is 50/cm2 or less, and on the connecting surface, a coating layer, which is formed of a solder or a brazing material, has a thickness of 1 μm to 30 μm, an arithmetic mean roughness Ra of a roughness curve showing a surface roughness of Ra≦2 μm, and a maximum height roughness Rz of Rz≦15 μm, and fills and covers the recesses or protrusions, is formed.
摘要翻译:本发明提供了一种半导体元件安装基板,其通过提高基板与另一构件之间的热传导效率,可以可靠地防止例如半导体激光器等发光元件通过发热引起不良操作 本身,充分利用金刚石复合材料的高导热性。 在半导体元件安装基板中,与发光元件等连接的连接面被完成,使得每单位面积的至少一个深度或高度为10μm〜40μm的凹部或突起的数量 10μm至3mm的面方向直径尺寸为50 / cm 2以下,在连接面上,由焊料或钎焊材料形成的涂层的厚度为1μm〜30μm 形成表示粗糙度曲线的算术平均粗糙度Ra,表示粗糙度Ra< 1lE;2μm,最大高度粗糙度Rz为Rz< 1lE;15μm,填充并覆盖凹部或突起。
摘要:
A heat transfer sheet including a substrate film having thereon a due layer including a dye and a binder, wherein the binder includes a urethane-modified cellulosic resin obtained by the reaction of a hydroxyl group-containing cellulosic resin with an isocyanate.
摘要:
An oil pump having an inner rotor with of external teeth; an outer rotor that is eccentrically provided and has internal teeth that mesh with the inner rotor external teeth, and an oil pump body that accommodates the outer and inner rotors. By rotationally driving the inner rotor to increase and decrease a space between the internal and the external teeth, an intake stroke suctions hydraulic oil from the oil pump body and a discharge stroke discharges the suctioned hydraulic oil to a discharge port formed in the oil pump body. Between the intake and discharge strokes, a confinement stroke cuts off the suctioned hydraulic oil and confines the suctioned hydraulic oil in the space, and a compression stroke reduces the space and compresses the confined hydraulic oil. Further, an interval is set between a finish end portion of the intake port of the oil pump body and a start end portion of the discharge port such that a rotation angle of the inner rotor during the compression stroke is 21 to 27 degrees.
摘要:
The invention provides a semiconductor element mounting substrate that, by virtue of an improvement in thermal conduction efficiency between the substrate and another member, can reliably prevent, for example, a light emitting element such as a semiconductor laser from causing a defective operation by heat generation of itself, by taking full advantage of high thermal conductivity of a diamond composite material. In the semiconductor element mounting substrate, a connecting surface to be connected with the light emitting element or the like is finished such that the number, per unit area, of at least either recesses or protrusions having a depth or height of 10 μm to 40 μm and a surface-direction diametrical size of 10 μm to 3 mm is 50/cm2 or less, and on the connecting surface, a coating layer, which is formed of a solder or a brazing material, has a thickness of 1 μm to 30 μm, an arithmetic mean roughness Ra of a roughness curve showing a surface roughness of Ra≦2 μm, and a maximum height roughness Rz of Rz≦15 μm, and fills and covers the recesses or protrusions, is formed.
摘要翻译:本发明提供了一种半导体元件安装基板,其通过提高基板与另一构件之间的热传导效率,可以可靠地防止例如半导体激光器等发光元件通过发热引起不良操作 本身,充分利用金刚石复合材料的高导热性。 在半导体元件安装基板中,与发光元件等连接的连接表面被完成,使得每单位面积的至少一个具有10μm至40μm的深度或高度的凹部或突起的数量 10um〜3mm的表面方向直径尺寸为50 / cm 2以下,在连接面上,由焊料或钎焊材料形成的涂层的厚度为1〜30μm 形成表示粗糙度Ra <=2μm的粗糙度曲线和Rz <=15μm的最大高度粗糙度Rz的算术平均粗糙度Ra,并且填充和覆盖凹部或突起。
摘要:
A heat transfer sheet including a substrate film and a dye layer including a dye and a binder formed thereon, wherein the binder includes organic-solvent-soluble polymers having ester moieties and/or urethane moieties, prepared by modifying water-soluble natural and/or semisynthetic polymers by esterifying and/or urethanating an inner hydroxyl group thereof, and the dye includes a sublimable dye homogeneously dissolved in the binder. A heat transfer sheet is also disclosed which includes a substrate film, and a dye layer formed thereon, wherein the dye layer includes (i) a binder which is cellulose acetate having an acetylation rate of 2.4 or more and a total substitution rate of 2.7 or more, and (ii) a sublimable dye dissolved in the binder. The sublimable dye contained in the dye layer is not separated from the binder even when the heat transfer sheet is preserved for a long period of time. Furthermore, the heat transfer sheet can produce a high-density image even when only a small amount of thermal energy is applied thereto.
摘要:
A video printer device is disclosed which is capable of printing out a high quality still image by subjecting image data obtained from a continuous video signal such as a television signal or the like, to noise processing and tone processing to improve the quality of the same. Upon subjecting said video signal to the noise and tone processings, a processed image can be displayed on a screen of a monitor, and checked and corrected on the same screen on real time.
摘要:
A surface-acoustic-wave (SAW) device that has not only an increased propagation velocity of SAWs but also an increased electromechanical coupling coefficient of 20% or more. The SAW device comprises a diamond substrate 10, a KNbO3 layer 30, and IDTs 40. The KNbO3 layer 30 is composed of a single crystal having the layer thickness and the crystal orientation that are controlled so as to obtain a propagation velocity of 5,000 m/s or more and an electromechanical coupling coefficient of 20% or more for the SAW in a specified mode.
摘要:
A thermal transfer sheet including a substrate film and a hot-melt ink layer including a first ink layer and a second ink layer laminated in that order on one surface of the substrate film. The first ink layer includes a wax and a colorant, and the second ink layer comprising a supercooling resin incompatible with the wax, and a colorant.