Lg Electronics Inc.

Pacific Corporation

Min Soo Noh

Soo Hyun Kim

Duck Hee Kim

Chan Ho Park

Tae Kyung Yoo

Shi Jong Leem

Hyun Ho Oh

Su Sun An

Chul Chae Choi

Jae Won Yoo

Hyun Chul Ko

Jin Seon Lee

Seong Joon Moon

Ju Ok Seo

Meoung Whan Cho

A method for manufacturing a semiconductor light emitting device, which is capable of providing high characteristic homogeneity and reproducibility, is disclosed. The disclosed method includes forming a buffer layer over a substrate, selectively growing a nitride crystal layer on the buffer layer, forming a nitride semiconductor layer having a multilayer structure over the nitride crystal layer, forming a first electrode on the nitride semiconductor layer, attaching an auxiliary substrate to the first electrode, separating the substrate from the nitride crystal layer, forming a second electrode on the nitride crystal layer exposed in accordance with the separation of the substrate, and removing the auxiliary substrate from the first electrode.

Method for manufacturing semiconductor light emitting device

A light guide plate for a surface light-emitting device and a method of manufacturing the same are disclosed wherein the light guide plate is constructed in the form of an optical waveguide including an upper cladding film, core films formed with V-cut grooves, and a lower cladding film, so that since the upper and lower cladding films with a relatively low refractive index are respectively located on upper and lower surfaces of the core films, external foreign substances cannot penetrate into the core films, and the core films are not brought into contact with other components, whereby optical transmission properties are not changed and brightness can be also enhanced, and since the V-cut grooves are formed or both the V-cut grooves and optical waveguides are formed at the same time by means of a simple hot embossing process, the manufacturing costs can be saved.

Light guide plate for surface light-emitting device and method of manufacturing the same

The present invention provides a menthol derivative represented by the following Formula 1 and a method for preparing the menthol derivative. The menthol derivative represented by the Formula 1 is prepared by reacting menthol and phosphorous oxychloride with an equivalence ratio of 1:1&tilde;1.3 in an organic solvent in the presence of organic base to obtain dichloro&lsqb;5-methyl-2(mehtylethyl)cylclohexyloxy&rsqb;phosphino-1-one; and reacting above obtained dichloro&lsqb;5-methyl-2(mehtylethyl)cylclohexyloxy&rsqb;phosphino-1-one with 3-amino propanol in the organic solvent in the presence of the organic; then hydrolyzing and crystallizing the product with polar organic solvent.

Menthol derivatives and process for preparing the same

A method for fabricating a semiconductor laser diode includes the steps of forming a double hetero structured semiconductor layer on a substrate, forming a dielectric layer on the double hetero structured semiconductor layer, selectively etching the dielectric layer to expose a portion of the double hetero structured semiconductor layer, selectively removing the exposed semiconductor layer using the dielectric layer as a mask by liquid phase etching, and re growing a semiconductor layer on the etched portion by liquid phase epitaxy.

Method for fabricating a semiconductor laser diode

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Seoul, South Korea

Min Soo Noh