摘要:
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a principal plane of orientation associated with the substrate thereby for example, enhancing crystal properties, preventing threading dislocations, and facilitating device miniaturization and separation during manufacturing and use thereof.
摘要:
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a principal plane of orientation associated with the substrate thereby for example, enhancing crystal properties, preventing threading dislocations, and facilitating device miniaturization and separation during manufacturing and use thereof.
摘要:
Semiconductor light-emitting devices are provided. The semiconductor light-emitting devices include a substrate and a crystal layer selectively grown thereon at least a portion of the crystal layer is oriented along a plane that slants to or diagonally intersect a principal plane of orientation associated with the substrate thereby for example, enhancing crystal properties, preventing threading dislocations, and facilitating device miniaturization and separation during manufacturing and use thereof.
摘要:
A display unit and semiconductor light emitting devices are provided. The display unit includes a number of the semiconductor light emitting devices arrayed on a base body, wherein each of the semiconductor light emitting devices is formed together with dummy devices for setting an emission wavelength of the semiconductor light emitting device, and the semiconductor light emitting device is formed by selective growth, and one conductive layer is formed in self-alignment on planes grown from tilt planes formed by selective growth. Such a display unit has a structure suitable for multi-colors without increasing the number of production steps.
摘要:
In a semiconductor light emitting device configured to extract light through a substrate thereof, an electrode layer is formed on a p-type semiconductor layer (such as p-type GaN layer) formed on an active layer, and a nickel layer is formed as a contact metal layer between the electrode layer and the p-type semiconductor layer and adjusted in thickness not to exceed the intrusion length of light generated in the active layer. Since the nickel layer is sufficiently thin, reflection efficiency can be enhanced.
摘要:
Nitride semiconductor devices and methods of fabricating same are provided. The nitride semiconductor device includes a crystal layer grown into a three-dimensional shape having a side surface portion and an upper layer portion, wherein an electrode layer is formed on the upper layer portion via a high resistance region formed by an undoped gallium nitride layer or the like. Since the high resistance region is provided on the upper layer portion, a current flows so as to bypass the high resistance region of the upper layer portion, to form a current path extending mainly or substantially along the side surface portion while avoiding the upper layer portion, thereby suppressing the flow of a current in the upper layer portion poor in crystallinity.
摘要:
Disclosed herein is a process for vapor phase growth of gallium nitride compound semiconductor which yields uniform crystal layers with good reproducibility. The process comprises forming a first nitride semiconductor layer on a substrate, forming thereon a protective film for crystal growth prevention in such a way that it has partly open window regions through which the first nitride semiconductor layer is exposed, forming a second nitride semiconductor layer by selective growth from the first nitride semiconductor layer at a crystal growth starting temperature, and continuing crystal growth at a temperature higher than the crystal growth starting temperature. The vapor phase growth at a low temperature yields a uniform crystal layer, and the ensuing vapor phase growth at a raised temperature yields a uniform crystal layer with good reproducibility in conformity with the first crystal layer.
摘要:
An image display unit and a method of producing the image display unit, wherein the image display unit includes an array of a plurality of light emitting devices for displaying an image, and wherein the method of producing the image display unit employs, for example, a space expanding transfer, whereby a first transfer step includes transferring the devices arrayed on a first substrate to a temporary holding member such that the devices are spaced from each other with a pitch larger than a pitch of the devices arrayed on the first substrate, a second holding step includes holding the devices on the temporary holding member, and a third transfer step includes transferring the devices held on the temporary holding member onto a second board such that the devices are spaced from each other with a pitch larger than the pitch of the devices held on the temporary holding member.
摘要:
A method of fabricating a semiconductor laser device includes the steps of forming semiconductor layers composed of a first conductive type cladding layer, an active layer, and a second conductive type cladding layer on a substrate, and peeling a device formation region of the semiconductor layers from the substrate and simultaneously forming a resonance mirror on an end portion of the device formation region by irradiating the device formation region with energy beams traveling from the back surface side of the substrate. With this configuration, it is possible to peel a device from a substrate and also form a flat resonance mirror with less damage of crystal by laser abrasion, and further to easily form a high quality resonance mirror without increasing the number of fabrication steps.
摘要:
A method of producing the image display unit, wherein the image display unit includes an array of a plurality of light emitting devices for displaying an image, and wherein the method of producing the image display unit employs, for example, a space expanding transfer, whereby a first transfer step includes transferring the devices arrayed on a first substrate to a temporary holding member such that the devices are spaced from each other with a pitch larger than a pitch of the devices arrayed on the first substrate, a second holding step includes holding the devices on the temporary holding member, and a third transfer step includes transferring the devices held on the temporary holding member onto a second board such that the devices are spaced from each other with a pitch larger than the pitch of the devices held on the temporary holding member.