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Haruhiko Okazaki Patents
Inventor:
Okazaki; Haruhiko
Address:
Yokohama, JP
No. of patents:
25
Patents:




Patent Number Title Of Patent Date Issued
7355212 Light emitting element April 8, 2008
An InGaN active layer is formed on a sapphire substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes {circle around (1)} an Ni layer for forming an ohmic contact with a p-GaN layer, {ci
7221002 Light emitting element, method of manufacturing the same, and semiconductor device having light May 22, 2007
An InGaN active layer is formed on a sapphire substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes {circle around (1)} an Ni layer for forming an ohmic contact with a p-GaN layer, {ci
7179671 Light emitting element, method of manufacturing the same, and semiconductor device having light February 20, 2007
A method of manufacturing an LED forms an InGaN active layer on a substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes a nickel layer for forming an ohmic contact with a p-GaN layer,
7138665 Light emitting element, method of manufacturing the same, and semiconductor device having light November 21, 2006
An InGaN active layer is formed on a sapphire substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes {circle around (1)} an Ni layer for forming an ohmic contact with a p-GaN layer, {ci
7138664 Semiconductor device having a light emitting element November 21, 2006
An InGaN active layer is formed on a sapphire substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes {circle around (1)} an Ni layer for forming an ohmic contact with a p-GaN layer, {ci
7135714 Light emitting element, method of manufacturing the same, and semiconductor device having light November 14, 2006
An InGaN active layer is formed on a sapphire substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes {circle around (1)} an Ni layer for forming an ohmic contact with a p-GaN layer, {ci
7122446 Semiconductor light-emitting element October 17, 2006
Part of light emitted downward by an active layer is reflected by an electrode functioning as a reflective layer, and travels upward to radiate outside. Since the electrode is made of a metal, it reflects almost all light regardless of its incident angle, and light can be efficiently
7110061 Image display device and light emission device September 19, 2006
An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversi
6924163 Semiconductor light emitting device and its manufacturing method August 2, 2005
Efficiency of leading out light released from an active layer, i.e. the external quantum efficiency, can be improved remarkably by processing a light lead-out surface to have an embossment. A layer containing a p-type dopant like magnesium (Mg) is deposited near the surface of a p-type G
6864627 Image display device and light emission device March 8, 2005
An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversi
6825502 Light emitting element, method of manufacturing the same, and semiconductor device having light November 30, 2004
An InGaN active layer is formed on a sapphire substrate. A p-side electrode is formed on the InGaN active layer to supply an electric current to this InGaN active layer. The p-side electrode includes 1 an Ni layer for forming an ohmic contact with a p-GaN layer, 2 an Mo layer having a
6803603 Semiconductor light-emitting element October 12, 2004
Part of light emitted downward by an active layer is reflected by an electrode functioning as a reflective layer, and travels upward to radiate outside. Since the electrode is made of a metal, it reflects almost all light regardless of its incident angle, and light can be efficiently
6586874 Image display device and light emission device July 1, 2003
An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversi
6495862 Nitride semiconductor LED with embossed lead-out surface December 17, 2002
Efficiency of leading out light released from an active layer, i.e. the external quantum efficiency, can be improved remarkably by processing a light lead-out surface to have an embossment. A layer containing a p-type dopant like magnesium (Mg) is deposited near the surface of a p-type G
6417020 Nitride compound light emitting device and method for fabricating the same July 9, 2002
An electrode of a metal, which is one of Group IV and VI elements, is deposited on an n-type In.sub.x Al.sub.y Ga.sub.1-x-y N layer. Alternatively, after an electrode material of carbon, germanium), selenium, rhodium, tellurium, iridium, zirconium, hafnium, copper, titanium nitride,
6316792 Compound semiconductor light emitter and a method for manufacturing the same November 13, 2001
A compound semiconductor light emitting element includes a light emitting region formed by a pn-junction between a first compound semiconductor layer of a first conductivity type and a second compound semiconductor layer of a second conductivity type. A first electrode is connected to th
6281526 Nitride compound light emitting device and method for fabricating same August 28, 2001
An electrode of a metal, which is one of Group IV and VI elements, is deposited on an n-type In.sub.x Al.sub.y Ga.sub.1-x-y N layer. Alternatively, after an electrode material of carbon, germanium), selenium, rhodium, tellurium, iridium, zirconium, hafnium, copper, titanium nitride,
6228981 Process for preparing an aqueous dispersion coating material and process for preparing a powder May 8, 2001
A process for preparing an aqueous dispersion coating material containing a resin component having a softening temperature of from 10 to 250.degree. C., which comprises:(1) a step of mixing various starting materials which will be coating film-constituting components, to obtain a blend m
5990500 Nitride compound semiconductor light emitting element and its manufacturing method November 23, 1999
A nitride compound semiconductor light emitting element is made by stacking a metal layer made of one of elements: palladium (Pd), scandium (Sc), vanadium (V), zirconium (Zr), hafnium (Hf), tantalum (Ta), rhodium (Rh), iridium (Ir), cobalt (Co) and copper (Cu), and another metal layer ma
5977566 Compound semiconductor light emitter November 2, 1999
A compound semiconductor light emitting element includes a light emitting region formed by a pn-junction between a first compound semiconductor layer of a first conductivity type and a second compound semiconductor layer of a second conductivity type. A first electrode is connected to th
5966396 Gallium nitride-based compound semiconductor laser and method of manufacturing the same October 12, 1999
A semiconductor laser is formed from a gallium nitride-based compound semiconductor material, and has a double-heterostructure portion obtained by sandwiching an active layer between an n-type cladding layer and a p-type cladding layer on a sapphire substrate. The double-heterostructure
5157473 Avalanche photodiode having guard ring October 20, 1992
For providing an avalanche photodiode having a good guard ring effect and a high speed response, a body of semiconductor materials is prepared, which includes a window layer of n-type InP epitaxially grown on an avalanche multiplication layer of n.sup.+ -type InP. The window layer is sel
4268542 Process for forming multi-layer coatings May 19, 1981
The present invention relates to a process for forming a multi-layer coating including at least two coating layers by performing the oven drying step at one time, which comprises coating at least partially the surface of the substrate with a powder coating composition, then applying
4243565 Aqueous dispersion type coating composition January 6, 1981
This invention relates to an aqueous dispersion type coating composition comprising a homogeneous mixture of an aqueous medium, synthetic resin particles and a scaly aluminum pigment.
4137349 Process for forming multi-layer coatings January 30, 1979
The present invention relates to a process for forming a multi-layer coating including at least two coating layers by performing the oven drying step at one time, which comprises applying a slurry paint comprising synthetic resin particles dispersed in an aqueous medium, to an undrie


 
 
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