Patent application number | Description | Published |
20090012219 | PRODUCTION PROCESS OF COLORED RESIN POWDER - A production process of colored resin powder, comprising a coloring step of mixing 0.5 to 40% by mass of a colorant (b1) with 99.5 to 60% by mass of a non-phthalic acid plasticizer (b2) to prepare a colored paste (B) and adding and mixing the colored paste (B) into a powdery thermoplastic polyurethane-urea resin (A), wherein the amounts of the colorant (b1) and the plasticizer (b2) contained in the colored paste (B) added to the powdery thermoplastic polyurethane-urea resin (A) are 0.1 to 5 parts by mass and 1 to 20 parts by mass, respectively, per 100 parts by mass of the thermoplastic polyurethane-urea resin. According to the production process, there can be provided colored resin powder, which is free from color mottling (color unevenness) on its surface and does not cause smearing of a molded product due to separation and falling of the colorant upon a molding process or the like. | 01-08-2009 |
20090053456 | OPTICAL RECORDING MEDIUM - Provided is an optical recording medium that comprises two layers of a first information recording layer and a second information recording layer; the first information recording layer and the second information recording layer are laminated through an intermediate layer; wherein the two layers are recorded and regenerated by action of laser light irradiated from the side of the first information recording layer, the second information recording layer comprises a light reflective layer, a dye recording layer, and an inorganic protective layer on a substrate, and the substrate comprises wobble convex portions on its surface, the inorganic protective layer has a thickness of 3 nm to 40 nm, the dye recording layer comprises a cyanine compound expressed by General Formula (I) and a squarylium compound expressed by General Formula (II): | 02-26-2009 |
20090264614 | PROCESS FOR PRODUCING POWDERED THERMOPLASTIC POLYURETHANE UREA RESIN - A process for producing a powdered thermoplastic polyurethane urea resin is disclosed, which includes a step of forming a polyurethane urea resin by reacting a polymer polyol (a), an organic polyisocyanate (b), a monofunctional active hydrogen-containing compound (c), and preferably a bifunctional active hydrogen-containing compound (d) in specific proportions to form an isocyanate-terminated prepolymer, and subjecting the isocyanate-terminated prepolymer and water (e) to chain extension reaction in a non-aqueous dispersion medium. According to this production process, a powdered thermoplastic polyurethane urea resin having excellent melt formability can be obtained, and it is easy to control a molecular weight of the polyurethane urea resin. | 10-22-2009 |
20100027393 | OPTICAL RECORDING MEDIUM, OPTICAL RECORDING APPARATUS, AND SYSTEM TO PREPARE CONTENTS-RECORDED OPTICAL RECORDING MEDIUM - An optical recording medium, comprising a dye recording layer, wherein a recording mark portion is formed at the dye recording layer by use of a laser light having a wavelength of 640 nm to 680 nm, and a reflectance after recording with respect to the laser light at the recording mark portion is increased compared to a reflectance before recording. | 02-04-2010 |
20100118680 | OPTICAL RECORDING MATERIAL, OPTICAL RECORDING MEDIUM, AND RECORDING AND REPRODUCING METHOD OF OPTICAL RECORDING MEDIUM - The present invention provides an optical recording material allows for obtaining excellent recording signal properties even at high-speed recording and is excellent in durability in both a single-sided single layer optical recording medium and a single-sided two-layer optical recording medium having a first recording layer and a second recording layer. The optical recording material contains a cyanine compound having a specific structure and a squarylium compound as dyes for optical recording layers. | 05-13-2010 |
20100236859 | LUBRICANT COMPOSITION, SPEED REDUCTION GEAR EMPLOYING THE COMPOSITION AND ELECTRIC POWER STEERING APPARATUS EMPLOYING THE SPEED REDUCTION GEAR - There provided a lubricant composition that without any excess increase of the steering torque of an electric power steering apparatus and without any generation of sliding noise, reduces rattling sound thereby excel in the effect of noise reduction in automobile compartment, and is capable of favorably sustaining the above effect even when continuously used in high-temperature environment for a prolonged period of time; a speed reduction gear using the lubricant composition; and an electric power steering apparatus. The lubricant composition includes buffer particles of a polyurethane resin synthesized by reacting a polycarbonate polyol, cross-linking agent having three or more active hydrogen groups per molecule and a polyisocyanate. The speed reduction gear ( | 09-23-2010 |
Patent application number | Description | Published |
20100213316 | CABLE PROTECTION DEVICE - PROBLEM TO BE SOLVED: To prevent a cable from being damaged by rubbing against a helicopter. | 08-26-2010 |
20120009078 | VANE COMPRESSOR - A vane compressor according to the present invention, including a cylinder which is approximately cylindrical and whose both ends located in an axial direction are open, a cylinder head and a frame which close both the ends of the cylinder, a rotor shaft which includes a rotor part being cylindrical and rotating in the cylinder and a shaft part transmitting torque to the rotor part, and a vane which is installed in the rotor part and whose tip portion has the R-shape facing outward, performs the compression operation in the state where the normal to the R-shape of the tip portion of the vane and the normal to the inner surface of the cylinder are always approximately coincident with each other. | 01-12-2012 |
20120033251 | Image forming apparatus, and computer program product for image forming - An image forming apparatus includes a receiving unit; a data saving unit; a drawing data generating unit; a log storage unit that stores a processing log; an image forming unit; and a data management unit. The data management unit, when the print job is analyzed as a time designated print job; causes the data generating unit to generate the drawing data; causes the data saving unit to save the drawing data; that, when analyzed printing being enabled at the designated print time, causes the image forming unit to perform image formation based on the drawing data and causes the log storage unit to store therein a processing log; and that, when printing is analyzed as disabled at the designated print time, performs processing corresponding to a print disabled state preset and causes the log storage unit to store therein a processing log about the processing. | 02-09-2012 |
20120069390 | Image forming apparatus, image forming method, and computer program product - An image forming apparatus includes a storage unit that stores therein print data and first converted data obtained by reflecting a first print condition in the print data and converting the print data into a printable form; an input receiving unit that receives an input of a reprint instruction to reprint the first converted data; an acquiring unit that acquires a second print condition for reprinting the first converted data; a determining unit that determines whether the first converted data is printable in the second print condition by comparing the acquired second print condition against the first print condition; a converting unit that converts, when it is determined that the first converted data is unprintable in the second print condition, the print data into second converted data by reflecting the second print condition in the print data; a print control unit prints out the second converted data. | 03-22-2012 |
20120147404 | Printing Control Apparatus, Printing Apparatus, And Computer Program Product - A printing control apparatus includes a print commanding unit that sends a notice of printing data and printing start command to a printing unit on sheets supplied from a normal tray or a bypass tray. The print commanding unit includes a condition determining unit that determines whether a sheet supplying condition set with respect to the printing data and a status of the printing unit satisfy a condition for the bypass tray; a checkup screen display unit that displays a checkup screen relating to the sheet supply from the bypass tray in a case where it is determined that the condition is satisfied; and a notice permitting unit that permits a notice of a printing start command in a case where a notice indicating agreement for printing is received. | 06-14-2012 |
20130064705 | VANE COMPRESSOR - There is provided a vane compressor with a plurality of vanes having a structure in which a rotor portion and a rotary shaft are unitarily formed so as to reduce bearing sliding loss of the rotary shaft and reduce gas leakage loss by narrowing a space formed between the rotor portion and the inner peripheral surface of a cylinder. In the vane compressor with the plurality of vanes according to the present invention, an angle α of a circular arc constituting the partial ring shape of each vane aligner satisfies a relationship of | 03-14-2013 |
20130149178 | VANE COMPRESSOR - A vane compressor including plural vanes that perform a compression operation such that the normal to a circular arc formed by each vane tip portion and the normal to the inner peripheral surface of a cylinder are constantly approximately coincident with each other. Each of the plural vanes is held constantly in the normal direction of the inner peripheral surface of the cylinder or is held constantly along a direction having a fixed inclination with respect to the normal direction of the inner peripheral surface of the cylinder so that the compression operation is performed in the state the normal to the circular arc formed by the tip portion of each of the plural vanes and the normal to the inner peripheral surface of the cylinder are constantly approximately coincident with each other. The plural vanes are rotatably and movably supported with respect to a rotor portion. | 06-13-2013 |
Patent application number | Description | Published |
20100099901 | METHOD FOR INCREASING THE CONTENT OF DOCOSAHEXAENOIC ACID IN FAT-CONTAINING MATERIALS OR IN FATS AND OILS - [PROBLEMS] To provide a fat-and-oil in which the content of docosahexaenoic acid is increased. | 04-22-2010 |
20120100550 | METHOD FOR DETERMINING FATTY ACID SYNTHESIS PATHWAY OF MICROORGANISM, AND PCR PRIMER SET FOR USE IN THE METHOD - Disclosed is a method for determining the fatty acid synthesis pathway of a microorganism. Specifically disclosed is a method for determining the fatty acid synthesis pathway of a microorganism, which is characterized by producing degenerate primers for a fatty acid synthesis-related enzyme gene and determining the presence or absence of the fatty acid synthesis-related gene in the genome gene extracted from the microorganism using the degenerate primers. The sequences for degenerate primers for C20-elongase gene, which is a fatty acid synthesis-related enzyme gene, are ATHGARTWYTKBRTITTYGTICA (SEQ ID NO:1) and TARTRISWRTACATIADIAMRTG (SEQ ID NO:2), and the sequences for degenerate primers for ?4-desaturase gene are GGNCAYCAYCMITAYACNAA (SEQ ID NO:3) and TCDATYTGRTGIBWIARNCC (SEQ ID NO:4). The microorganism is one belonging to the class Labyrinthulea. Also specifically disclosed is a PCR primer set for use in the determination method. The method is useful as a method for screening a microorganism capable of synthesizing a fatty acid. | 04-26-2012 |
20120322116 | METHOD FOR TRANSFORMING STRAMENOPILES - Disclosed is a transformation method whereby an ability to produce a useful substance of a stramenopile can be improved. The method for transforming a stramenopile comprises transferring a foreign gene into the stramenopile which is a microorganism belonging to the class | 12-20-2012 |
20130096332 | METHOD FOR INCREASING THE CONTENT OF DOCOSAHEXAENOIC ACID IN FAT-CONTAINING MATERIALS OR IN FATS AND OILS - To provide a fat-and-oil in which the content of docosahexaenoic acid is increased. A process for producing highly unsaturated fatty acids comprising culturing a stramenopile capable of producing highly unsaturated fatty acids in a culture medium containing an inhibitor for fatty acid desaturases; fats-and-oils in which the content of highly unsaturated fatty acids, particularly docosahexaenoic acid produced by the relevant method, is increased. A method for enhancing the productivity of highly unsaturated fatty acids in stramenopiles, comprising culturing a stramenopile in a culture medium containing an inhibitor for fatty acid desaturases; stramenopiles having the enhanced productivity of highly unsaturated fatty acids, generated by the relevant method. Particularly, the process for producing highly unsaturated fatty acids, the method for enhancing the productivity of highly unsaturated fatty acids, and the stramenopile having the enhanced productivity of highly unsaturated fatty acids, wherein the stramenopile is a microorganism classified into | 04-18-2013 |
20130309772 | METHOD FOR TRANSFORMATION OF STRAMENOPILE - To provide a transformation method for producing a stramenopile organism having an improved unsaturated fatty acid production capability by disrupting a gene of the stramenopile organism or inhibiting the expression of the gene in a genetically engineering manner. [Solution] A method for transforming a stramenopile organism, which comprises disrupting a gene of the stramenopile organism or inhibiting the expression of the gene in a genetically engineering manner, and which is characterized in that the stramenopile organism is selected from | 11-21-2013 |
20150299339 | BETA-1,3-GLUCAN DERIVATIVE AND METHOD FOR PRODUCING BETA-1,3-GLUCAN DERIVATIVE - An object of the present invention is to provide a β-1,3-glucan derivative which is a polymer having β-1,3-glucan as a main chain, and has thermoplasticity and excellent moldability, and a preparation method thereof. That is, the present invention provides a β-1,3-glucan derivative having a structure represented by General Formula (1) as a main chain. | 10-22-2015 |
Patent application number | Description | Published |
20080230686 | Charged-particle detecting apparatus - The present invention relates to a charged-particle detecting apparatus having a structure which enables adjustment of a potential distribution so as to stably maintain flight loci of charged particles without depending on a change in a voltage-applied state. The charged-particle detecting apparatus comprises a first electrode, an MCP, a second electrode, a third electrode that functions as an anode, and a rear cover arranged in order along a predetermined reference axis. The third electrode is arranged on the opposite side of the MCP with respect to the second electrode, and is electrically connected to an output signal part via a capacitor. In particular, the first electrode is arranged so as to become a part of the outer surface of the charged-particle detecting apparatus, and components positioned between the first electrode and the rear cover have contours with section sizes equal to or smaller than that of the contour of the first electrode when viewed from the first electrode side toward the rear cover. | 09-25-2008 |
20080290267 | MCP unit, MCP detector and time of flight mass spectrometer - The present invention relates to an MCP unit or the like having a structure intended to achieve a desired time response characteristic, without depending on a limitation imposed by a channel diameter of MCP. The MCP unit comprises the MCP for releasing secondary electrons internally multiplied in response to incidence of charged particles, an anode arranged in a position where the secondary electrons reach, and an acceleration electrode arranged between the MCP and the anode. In particular, the acceleration electrode includes a plurality of openings which permit passing of the secondary electrons migrating from the MCP toward the anode. Further, the acceleration electrode is arranged such that the shortest distance B between the acceleration electrode and the anode is longer than the shortest distance A between the MCP and the acceleration electrode. Thus, an FWHM of a detected peak appearing in response to the incidence of the charged particles is remarkably shortened. | 11-27-2008 |
20090230286 | MICRO CHANNEL PLATE ASSEMBLY - In an MCP assembly | 09-17-2009 |
20090236517 | TIME OF FLIGHT MASS SPECTROMETER AND CHARGED PARTICLE DETECTOR THEREFOR - In a charged particle detecting apparatus | 09-24-2009 |
Patent application number | Description | Published |
20090056567 | PRINTING APPARATUS - A printing apparatus for printing on a print substrate by sequentially conducting a plurality of processing operations. The printing apparatus includes a pallet configured to receive the print substrate, and work station units each comprising a conveyer mechanism configured to convey the pallet and a work mechanism configured to conduct a predetermined processing operation to the print substrate on the pallet. A plurality of the work station units are aligned adjacent to each other, and the work station units are configured to be replaceable or rearrangeable to change the sequence of the plurality of processing operations. | 03-05-2009 |
20090056569 | PRINTING APPARATUS - A printing apparatus including a pallet configured to receive a print substrate, a conveyer mechanism configured to convey the pallet, and a working device configured to conduct a processing operation for printing on the print substrate on the pallet. The printing apparatus further includes a locating mechanism configured to stop the pallet at a first holding position and a first holding mechanism configured to hold the pallet, stopped at the first holding position by the first locating mechanism, to be spaced apart from the conveying mechanism. After the pallet being conveyed by the conveying mechanism is stopped by the first locating mechanism, the pallet is held to be spaced apart from the conveying mechanism by the first holding mechanism and the processing operation is conducted by the working device relative to the print substrate on the pallet thus held. | 03-05-2009 |
20090058972 | PRINTING APPARATUS - A printing apparatus including a conveyer system configured to convey a pallet having a print substrate thereon, anteroposterior moving mechanisms, fitting members disposed on the moving mechanisms, a guide bar member that extends in a lateral direction mounted on the fitting members, and a head device that is movably disposed along the guide bar member and has a plurality of inkjet nozzles. The printing apparatus is adapted to conduct printing by ejecting ink droplets from the inkjet nozzles to the print substrate on the pallet which is secured above an upper conveying passage and which is conveyed by the conveyer system while moving the head device. | 03-05-2009 |
20090060696 | PRINTING APPARATUS - A printing apparatus including a pallet configured to receive a print substrate, a conveyer system configured to convey the pallet, and a plurality of work mechanisms arranged along a pallet conveying direction of the conveyer system. The work mechanisms are configured to conduct processing operations to the print substrate. The conveyer system includes an upper conveyer mechanism configured to sequentially convey the pallet to respective working positions of the work mechanisms, and a lower conveyer mechanism arranged below and along the upper conveyer mechanism. The lower conveyer mechanism is configured to convey the pallet in a direction opposite to the pallet conveying direction of the upper conveyer mechanism so that the conveyer system is structured to have an upper stage and a lower stage. | 03-05-2009 |
Patent application number | Description | Published |
20110211869 | MANUFACTURING METHOD, SURFACE-EMITTING LASER DEVICE, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - A manufacturing method for manufacturing a surface-emitting laser device includes the steps of forming a laminated body in which a lower reflecting mirror, a resonator structure including an active layer, and an upper reflecting layer having a selective oxidized layer are laminated on a substrate; etching the laminated body to form a mesa structure having the selective oxidized layer exposed at side surfaces thereof; selectively oxidizing the selective oxidized layer from the side surfaces of the mesa structure to form a constriction structure in which a current passing region is surrounded by an oxide; forming a separating groove at a position away from the mesa structure; passivating an outermost front surface of at least a part of the laminated body exposed when the separating groove is formed; and coating a passivated part with a dielectric body. | 09-01-2011 |
20130061799 | MANUFACTURING METHOD OF GROUP 13 NITRIDE CRYSTAL - A method of manufacturing a group | 03-14-2013 |
20130062660 | GROUP 13 NITRIDE CRYSTAL AND SUBSTRATE THEREOF - A group 13 nitride crystal has a hexagonal crystal structure and at least contains nitrogen atom and at least a kind of metal atoms selected from a group consisting of B, Al, Ga, In, and Tl. The group 13 nitride crystal includes a first region located at an inner side of a cross section intersecting a c-axis, and a second region surrounding at least a part of an outer periphery of the first region, having a thickness larger than a maximum diameter of the first region, and having a carrier density higher than that of the first region. | 03-14-2013 |
20130064749 | GROUP 13 NITRIDE CRYSTAL AND GROUP 13 NITRIDE CRYSTAL SUBSTRATE - A group 13 nitride crystal having a hexagonal crystal structure and containing at least a nitrogen atom and at least a metal atom selected from a group consisting of B, Al, Ga, In, and Tl. The group 13 nitride crystal includes a first region disposed on an inner side in a cross section intersecting c-axis, a third region disposed on an outermost side in the cross section and having a crystal property different from that of the first region, and a second region disposed at least partially between the first region and the third region in the cross section, the second region being a transition region of a crystal growth and having a crystal property different from that of the first region and that of the third region. | 03-14-2013 |
20130065010 | GALLIUM NITRIDE CRYSTAL, GROUP 13 NITRIDE CRYSTAL, GROUP 13 NITRIDE CRYSTAL SUBSTRATE, AND MANUFACTURING METHOD - A gallium nitride crystal having a hexagonal crystal structure includes a first region located on an inner side of a cross section intersecting c-axis of the hexagonal crystal structure, and a second region surrounding at least a part of the outer periphery of the first region in the cross section. An emission spectrum of each of the first region and the second region with electron beam or ultraviolet light excitation has a first peak including a band edge emission of gallium nitride and a second peak located in a longer wavelength area than the first peak. A peak intensity of the first peak is smaller than a peak intensity of the second peak in the first region, and a peak intensity of the first peak is greater than a peak intensity of the second peak in the second region. | 03-14-2013 |
20130065036 | GROUP 13 NITRIDE CRYSTAL SUBSTRATE, MANUFACTURING METHOD OF GROUP 13 NITRIDE CRYSTAL, AND GALLIUM NITRIDE CRYSTAL - A gallium nitride crystal having a hexagonal crystal structure, wherein a full width at half maximum (FWHM) of X-ray rocking curve in a region at a side of one edge in a c-axis direction is smaller than the FWHM in a region at a side of the other edge in the c-axis direction, in at least one of m-plane outer peripheral surfaces of the hexagonal crystal structure. | 03-14-2013 |
20130070039 | SURFACE-EMITTING LASER DEVICE, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER, IMAGE FORMING APPARATUS, AND METHOD FOR MANUFACTURING SURFACE-EMITTING LASER DEVICE - A surface-emitting laser device includes a transparent dielectric layer provided in an emitting region and configured to cause a reflectance at a peripheral part to be different from a reflectance at a central part in the emitting region. In the surface-emitting laser device, the thickness of a contact layer is different between a region having a relatively high reflectance and a region having a relatively low reflectance in the emitting region. The contact layer is provided on the high refractive index layer of an upper multilayer film reflecting mirror, and the total optical thickness of the high refractive index layer and the contact layer in the region having the relatively low reflectance is deviated from an odd number multiple of a one quarter oscillation wavelength of laser light emitted from the emitting region. | 03-21-2013 |
20130157397 | MANUFACTURING METHOD, SURFACE-EMITTING LASER DEVICE, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - A manufacturing method for manufacturing a surface-emitting laser device includes the steps of forming a laminated body in which a lower reflecting mirror, a resonator structure including an active layer, and an upper reflecting layer having a selective oxidized layer are laminated on a substrate; etching the laminated body to form a mesa structure having the selective oxidized layer exposed at side surfaces thereof; selectively oxidizing the selective oxidized layer from the side surfaces of the mesa structure to form a constriction structure in which a current passing region is surrounded by an oxide; forming a separating groove at a position away from the mesa structure; passivating an outermost front surface of at least a part of the laminated body exposed when the separating groove is formed; and coating a passivated part with a dielectric body. | 06-20-2013 |
20130243680 | GROUP 13 NITRIDE CRYSTAL AND GROUP 13 NITRIDE CRYSTAL SUBSTRATE - A group 13 nitride crystal has a hexagonal crystal structure containing a nitrogen atom and at least one type of metal atom selected from the group consisting of B, Al, Ga, In, and Tl. The group 13 nitride crystal has a basal plane dislocation in a plurality of directions. Dislocation density of the basal plane dislocation is higher than dislocation density of a threading dislocation of a c-plane. | 09-19-2013 |
20140077218 | GROUP 13 NITRIDE CRYSTAL, GROUP 13 NITRIDE CRYSTAL SUBSTRATE, AND METHOD OF MANUFACTURING GROUP 13 NITRIDE CRYSTAL - A group 13 nitride crystal having a hexagonal crystal structure contains at least a nitrogen atom and at least one metal atom selected from a group consisting of B, Al, Ga, In and Tl. Dislocation density of basal plane dislocations in a cross section parallel to a c-axis is 10 | 03-20-2014 |
20140219683 | SURFACE-EMITTING LASER DEVICE, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNER, IMAGE FORMING APPARATUS, AND METHOD FOR MANUFACTURING SURFACE-EMITTING LASER DEVICE - A surface-emitting laser device includes a transparent dielectric layer provided in an emitting region and configured to cause a reflectance at a peripheral part to be different from a reflectance at a central part in the emitting region. In the surface-emitting laser device, the thickness of a contact layer is different between a region having a relatively high reflectance and a region having a relatively low reflectance in the emitting region. The contact layer is provided on the high refractive index layer of an upper multilayer film reflecting mirror, and the total optical thickness of the high refractive index layer and the contact layer in the region having the relatively low reflectance is deviated from an odd number multiple of a one quarter oscillation wavelength of laser light emitted from the emitting region. | 08-07-2014 |
20140261157 | METHOD FOR PRODUCING GROUP 13 NITRIDE CRYSTAL AND APPARATUS FOR PRODUCING THE SAME - A method for producing a group 13 nitride crystal, comprises a crystal growth step of reacting nitrogen and a mixed melt containing at least a group 13 metal and at least one of an alkali metal and an alkaline earth metal, in the mixed melt, to grow a nitride crystal on a seed crystal, wherein at least one of the mixed melt and the seed crystal is rotated in the crystal growth step, a relative speed between the mixed melt and the seed crystal in the crystal growth step is repeatedly fluctuated in accordance with one or a plurality of types of predetermined patterns, and a maximum value of the relative speed indicated by the pattern is 0.01 m/s or more. | 09-18-2014 |
20140271439 | GROUP 13 NITRIDE CRYSTAL AND METHOD FOR PRODUCTION OF GROUP 13 NITRIDE CRYSTAL - A group 13 nitride crystal of hexagonal crystal including at least one or more metal atom selected from the group consisting of B, Al, Ga, In, and Tl, and a nitrogen atom, the group 13 nitride crystal comprises: a first region provided on the inner side of a cross section crossing a c-axis; a third region provided on an outermost side of the cross section; a second region provided between the first region and the third region at the cross section and having characteristics different from characteristics of the first region and the third region, wherein a shape formed by a boundary between the first region and the second region at the cross section is non-hexagonal. | 09-18-2014 |
20150247257 | GALLIUM NITRIDE CRYSTAL, GROUP 13 NITRIDE CRYSTAL, GROUP 13 NITRIDE CRYSTAL SUBSTRATE, AND MANUFACTURING METHOD - A gallium nitride crystal having a hexagonal crystal structure includes a first region located on an inner side of a cross section intersecting c-axis of the hexagonal crystal structure, and a second region surrounding at least a part of the outer periphery of the first region in the cross section. An emission spectrum of each of the first region and the second region with electron beam or ultraviolet light excitation has a first peak including a band edge emission of gallium nitride and a second peak located in a longer wavelength area than the first peak. A peak intensity of the first peak is smaller than a peak intensity of the second peak in the first region, and a peak intensity of the first peak is greater than a peak intensity of the second peak in the second region. | 09-03-2015 |