Rohm Co.,Ltd Patent applications |
Patent application number | Title | Published |
20100019687 | LIGHT EMITTING DIODE DRIVING APPARATUS - A light emitting diode driving apparatus | 01-28-2010 |
20090101927 | Method of manufacturing light emitting device - A method of manufacturing a semiconductor light emitting device employs a substrate formed by successively stacking an n-type semiconductor layered portion including an AlGaN layer, a light emitting layer containing In and a p-type semiconductor layered portion on a group III nitride semiconductor substrate having a larger lattice constant than AlGaN. This method includes the steps of selectively etching the substrate from the side of the p-type semiconductor layered portion along a cutting line to expose the AlGaN layer along the cutting line, forming a division guide groove along the cutting line on the exposed AlGaN layer, and dividing the substrate along the division guide groove. | 04-23-2009 |
20090072405 | Semiconductor device - The semiconductor device according to the present invention includes: a first wire made of a material mainly composed of Cu; a second wire made of a material mainly composed of Cu; an interlayer dielectric film formed between the first wire and the second wire; a via, made of a material mainly composed of Cu, penetrating through the intermediate dielectric film to be connected to the first wire and the second wire; and a dummy via, made of a material mainly composed of Cu, smaller in via diameter than the via and connected to the first wire while not contributing to electrical connection between the first wire and the second wire. | 03-19-2009 |