摘要:
According to one embodiment, a semiconductor light emitting element includes a light emitting element includes a semiconductor stacked body including a light emitting layer, a reflection layer, a support substrate, a first bonding electrode and a second bonding electrode. The reflection layer is made of a metal and has a first surface and a second surface opposite to the first surface. The semiconductor stacked body is provided on a side of the first surface of the reflection layer. The first bonding electrode is provided between the second surface and the support substrate and includes a convex portion projected toward the support substrate and a bottom portion provided around the convex portion in plan view. The second bonding electrode includes a concave portion fitted in the convex portion of the first bonding electrode and is capable of bonding the support substrate and the first bonding electrode.
摘要:
A semiconductor light emitting device includes: a support substrate; a metal layer provided on the support substrate; a semiconductor layer provided on the metal layer and including a light emitting layer; a contact layer containing a semiconductor, selectively provided between the semiconductor layer and the metal layer, and being in contact with the semiconductor layer and the metal layer; and an insulating film provided between the semiconductor layer and the metal layer at a position not overlapping the contact layer.
摘要:
A semiconductor light-emitting element, including a double hetero structure formed of III-V group compound semiconductor layers including an active layer acting as a light emitting layer and an n-type cladding layer and a p-type cladding layer having the active layer sandwiched therebetween, a p-type layer laminated on the double hetero structure and containing a concentration of Zn as a dopant, and a Zn diffusion preventing layer interposed between the active layer of the double hetero structure and the p-type layer having a high Zn concentration.
摘要:
A dielectric isolation substrate comprises a first semiconductor wafer, a second semiconductor wafer bonded on the first semiconductor wafer with a first insulating layer interposed therebetween, a semiconductor layer formed on the second semiconductor wafer, a first groove formed in the semiconductor layer and the second semiconductor wafer so as to reach the first insulating layer, thereby isolating the semiconductor layer and the second semiconductor wafer, and a second insulating layer formed on the side face of the first groove or embedded in the first groove. In this dielectric isolation substrate, a high breakdown voltage element and a low breakdown voltage element are formed in a region isolated by the first groove.
摘要:
A contents processing device includes a management data storage unit to store an updater identifier and a private key, an accepting unit to accept a content which is divided into a plurality of blocks, an updating type indicating a type of an updating as to the content, an updated block to be updated of the content, and an updated position, an inserting unit to generate an updated content by inserting the updating block into the updated position of the content, a first hash value calculating unit to calculate a hash value as to the updated block, a signature unit to read out the updater identifier and the private key from the management data storage unit to generate a digital signature using the private key as to updating record information including the updater identifier, the updated position, the hash value as to the updated block, and the updating type.
摘要:
A method for manufacturing a semiconductor light-emitting device of the invention includes: forming a semiconductor layer including a light-emitting layer and a first interconnect layer on a major surface of a temporary substrate; dividing the semiconductor layer and the first interconnect layer into a plurality of chips by a trench; collectively bonding each divided portion of the first interconnect layer of a plurality of chips to be bonded not adjacent to each other out of the plurality of chips on the temporary substrate to a second interconnect layer while opposing the major surface of the temporary substrate and the major surface of a supporting substrate forming the second interconnect layer, and collectively transferring a plurality of the bonded chips from the temporary substrate to the supporting substrate after irradiating interfaces between the bonded chips and the temporary substrate and separating the chips and the temporary substrate from each other.
摘要:
A fuel cell system prevents leakage of aqueous fuel solution to the cathode while reducing catalyst deterioration in the fuel cell. The fuel cell system includes a fuel cell including an anode and a cathode. An aqueous solution pump supplies the anode with aqueous methanol solution whereas an air pump supplies the cathode with air. Where there is an abnormality in the fuel cell, a CPU stops operation of the aqueous solution pump, and thereafter stops operation of the air pump when a temperature of the fuel cell detected by a cell stack temperature sensor is not higher than a predetermined value. When starting the fuel cell system with an abnormality existing in the fuel cell, the CPU drives the air pump and thereafter drives the aqueous solution pump.
摘要:
A cryptographic processing device, comprising: a storage unit; initial setting unit for setting a value to be stored in the storage unit; Montgomery modular multiplication operation unit for performing a Montgomery modular multiplication operation plural times for a value set by the initial setting unit; and fault attack detection unit for determining whether or not a fault attack occurred for each of at least some parts of the Montgomery modular multiplication operations performed plural times.
摘要:
REDC (A*B) is calculated for the values A and B by using a Montgomery's algorithm REDC. The part related to the A*B is performed by the three-input two-output product-sum calculation circuit. One digit ai of the value A, one digit bj of the value B and a carry value c1 are input to the product-sum calculation circuit, and ai*bj+c1 is calculated thereat. The higher-order digit of the r-adic two-digit of the calculation result is used as the carry value c1, and the lower digit is used for a later calculation. Further, one digit ni of a modulo N for the REDC, a predetermined value m and a carry value c2 are input into the product-sum calculation circuit, and n*ni+c2 is calculated thereat. The higher-order digit is used as the carry value c2, and the lower digit is used for a later calculation.
摘要:
The process comprises a step of growing epitaxially mixed crystals of a compound semiconductor represented by the composition formula Inx(Ga1-yAly)1-xP on a GaAs substrate 12 to form an epi-wafer having an n-type cladding layer 14 (0.45≦x≦0.50, 0≦y≦1), an active layer 15, a p-type cladding layer 16 and a cover layer 17; a step of removing the cover layer 17 by etching to expose the surface of the p-type cladding layer 16; a step of integrally joining a mirror-finished GaP substrate 11 on the p-type cladding layer 16 by placing the GaP substrate on the cladding layer at room temperature so that the mirror-finished surface of the GaP substrate may come into contact with the p-type cladding layer 16; a step of subjecting the resultant laminate to a heat treatment; a step of carrying out an etching treatment from the side of the GaAs substrate 12 to expose the n-type cladding layer 14; and a step of forming electrodes 19 on the surface of the n-type cladding layer 14 and on the back surface of the GaP substrate 11, respectively.
摘要翻译:该方法包括在GaAs衬底12上生长由组成式Inx(Ga1-yAly)1-xP表示的化合物半导体的外延混合晶体以形成具有n型包覆层14(0.45μm)的外延晶片的步骤, = x <= 0.50,0 <= y <= 1),有源层15,p型覆层16和覆盖层17; 通过蚀刻去除覆盖层17以露出p型覆层16的表面的步骤; 通过在室温下将GaP衬底放置在包覆层上,使GaP衬底的镜面精加工表面与p型覆层16接触, 型包覆层16; 对所得到的层压体进行热处理的工序; 从GaAs衬底12侧进行蚀刻处理以暴露n型包覆层14的步骤; 以及分别在n型包覆层14的表面和GaP基板11的背面上形成电极19的工序。