摘要:
A thin film of SiO.sub.2 is patterned on an N layer consisting of N-type Al.sub.x Ga.sub.1-x N (inclusive of x=0). Next, I-type Al.sub.x Ga.sub.1-x N (inclusive of x=0) is selectively grown and the portion on the N layer grows into an I-layer consisting an active layer of a light emitting diode, and that on the SiO.sub.2 thin film grows into a conductive layer. Electrodes are formed on the I-layer and conductive layer to constitute the light emitting diode. Also, on the surface a ({1120}) of a sapphire substrate, a buffer layer consisting of aluminum nitride is formed, onto which a gallium nitride group semiconductor is formed.
摘要翻译:在由N型Al x Ga 1-x N(包括x = 0)组成的N层上图案化SiO 2薄膜。 接下来,选择性地生长I型Al x Ga 1-x N(包括x = 0),并且N层上的部分生长成由发光二极管的有源层组成的I层,并且SiO 2薄膜上的部分生长成 导电层。 在I层和导电层上形成电极以构成发光二极管。 此外,在蓝宝石衬底的表面a({11&upbar&20})上形成由氮化铝构成的缓冲层,形成氮化镓族半导体。
摘要:
A gallium nitride group compound semiconductor laser diode includes at least one pn junction layer disposed between an n-type layer and a p-type layer. The n-type layer is formed from a gallium nitride group compound semiconductor material defined by the composition equation (Al.sub.x Ga.sub.1-x).sub.y In.sub.1-y N (where 0.ltoreq.x.ltoreq.1 and 0.ltoreq.y.ltoreq.1). The p-type layer, doped with an acceptor impurity, is obtained by electron beam irradiating a gallium nitride group compound semiconductor material defined by the composition equation (Al.sub.x' Ga.sub.1-x').sub.y' In.sub.1-y' N (where 0.ltoreq.x'.ltoreq.1, 0.ltoreq.y'.ltoreq.1, x=x' or x.noteq.x', and, y=y' or y.noteq.y'). The improved gallium nitride group semiconductor laser diode of the present invention is found to emit light in the visible short wavelength spectrum of light which includes the blue, violet and ultraviolet regions.
摘要翻译:氮化镓族化合物半导体激光二极管包括设置在n型层和p型层之间的至少一个pn结层。 n型层由由组成式(Al x Ga 1-x)y In 1-y N(其中0≤x≤1和0≤y≤1)限定的氮化镓族化合物半导体材料形成, 。 掺杂有受主杂质的p型层通过电子束照射由组成式(Al x Ga 1-x')y'In 1-y'N(其中0 i> 1)定义的氮化镓族化合物半导体材料而获得, = x' = 1,0 = 1,x = x'或x NOTEQUAL x',y = y'或y NOTEQUAL y')。 发现本发明的改进的氮化镓族半导体激光二极管在包括蓝色,紫色和紫外区域的光的可见短波长光谱中发光。
摘要:
A process and apparatus, whereby in the process of vapor growth of a gallium nitride group semiconductor (Al.sub.x Ga.sub.1-x N; inclusive of x=0) thin film using an organometallic compound gas, a reactant gas which grows Al.sub.x Ga.sub.1-x N and a reactant gas containing a doping element are separately introduced near to a susceptor and mixed in the vicinity of a substrate held by the susceptor to grow an I-type Al.sub.x Ga.sub.1-x N thin film, are disclosed. Also, a process of vapor growth and apparatus having a mixing tube and a process and apparatus for inclining the susceptor relative to the reactant gas flow are disclosed. Moreover, a process and apparatus, whereby the Al.sub.x Ga.sub.1-x N thin film is subjected to the crystal growth using a plasma of the reactant gas under reduced pressure, under the irradiation of ultraviolet rays or laser beams, are disclosed.
摘要翻译:一种工艺和装置,其中在使用有机金属化合物气体的氮化镓族半导体(Al x Ga 1-x N,包括x = 0)薄膜的气相生长过程中,生长Al x Ga 1-x N的反应气体和含有 在基座附近分别引入掺杂元素,并在由基座保持的基板附近混合,以生长I型Al x Ga 1-x N薄膜。 此外,公开了一种气相生长方法和具有混合管的装置和用于使基座相对于反应气体流动倾斜的方法和装置。 此外,公开了在紫外线或激光束的照射下,使用反应气体的等离子体在减压下对Al x Ga 1-x N薄膜进行晶体生长的方法和装置。
摘要:
Using nature that a pixel value in a lung of a chest X-ray moving image varies due to heart beat, the variation information on the pixel value is effectively used for diagnosis such as of a lung embolism or a heart disease, considering the variation information as lung blood flow information. A continuous X-ray image screening examination device receives a chest X-ray moving image from an X-ray detector and receives an electrocardiogram to become original information on a heart beat variation from an electrocardiogram recording apparatus. From the dynamic state of the heart wall measured by the electrocardiograph or the chest X-ray moving image, the heart dynamic state during the cardiac chamber systolic and diastolic phases is grasped, and information such as the variation of the pixel value of the chest X-ray moving image due to increase (lung blood flow increase) of the blood flow from the heart to the lung during the cardiac chamber systolic phase is generated.
摘要:
An object of the present invention is to provide an apparatus and method for ensuring a uniform orientation of liquid crystal molecules of an alignment layer by irradiation with ion beams. An apparatus of the present invention comprises a grid 11a having a plurality of ion ejection holes 30 of various sizes. The size of the ion ejection hole 30 varies depending on an ion density. The size of the ion ejection hole 30 increases with decrease in the ion density.
摘要:
It is an object of the present invention to provide an apparatus and a method for forming an alignment layer to align the orientation direction of liquid crystals. In an apparatus 10 for forming an alignment layer according to the present invention, the shape of an edge 32a of a mask 12 for forming a slit 14 is determined by integrating the orientation direction of liquid crystals. The liquid crystals can be uniformly oriented by the edge 32a having such shape. This leads to the manufacturing of a liquid crystal display free from irregularity in brightness and color.
摘要:
The selector lever in "N" is caught and locked by a notch of a plate moving in response to an actuated solenoid energized by failure of the driver to fasten his seat belt.
摘要:
Using nature that a pixel value in a lung of a chest X-ray moving image varies due to heart beat, the variation information on the pixel value is effectively used for diagnosis such as of a lung embolism or a heart disease, considering the variation information as lung blood flow information. A continuous X-ray image screening examination device 1 receives a chest X-ray moving image from an X-ray detector 2 and receives an electrocardiogram to become original information on a heat beat variation from an electrocardiogram recording apparatus 5. From the dynamic state of the heart wall measured by the electrocardiograph or the chest X-ray moving image, the heart dynamic state during the cardiac chamber systolic and diastolic phases is grasped, and information such as the variation of the pixel value of the chest X-ray moving image due to increase (lung blood flow increase) of the blood flow from the heart to the lung during the cardiac chamber systolic phase is generated.
摘要:
It is an object of the present invention to provide an apparatus and a method for forming an alignment layer to align the orientation direction of liquid crystals. In an apparatus 10 for forming an alignment layer according to the present invention, the shape of an edge 32a of a mask 12 for forming a slit 14 is determined by integrating the orientation direction of liquid crystals. The liquid crystals can be uniformly oriented by the edge 32a having such shape. This leads to the manufacturing of a liquid crystal display free from irregularity in brightness and color.
摘要:
An apparatus for measuring the color of a brilliant-cut diamond, comprising a light source for providing a measuring light, a holder for holding the diamond to allow the measuring light to enter the diamond through a table facet thereof, a photodetector for detecting a light which has emerged from the diamond through its table facet, a measurement unit for measuring a spectrum of the detected light and an arithmetic unit for deriving tristimulus values from the spectrum.The apparatus is of great practical advantage in that it can objectively measure the colors of brilliant-cut diamonds, and can produce measured outputs which can easily be converted to color grades of the type which has widely been used conventionally.