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2012-04-29
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1980³â´ë ÈĹÝ, Nichia´Â ¼¼°è ÃÖÃÊ·Î LED¶ó´Â »õ·Î¿î Á¶¸í¼ö´ÜÀ» °³¹ßÇß´Ù. 1800³â´ë ¸» Thomas EdisonÀÌ ¹é¿Àü±¸¸¦ ¸¸µé¾î³½Áö ¾î¾ð 200¿©³âÀÌ Áö³ ½ÃÁ¡À̾ú´Ù. ±×·± Nichia°¡ ÀڽŵéÀÌ ¼¼»ó¿¡ ¸Ç óÀ½ ³»³õÀº LED¿¡ °üÇÑ Æ¯ÇãÄ§ÇØ ¼Ò¼ÛÀ» ¹Ì±¹¿¡¼ ´çÇßÀ¸´Ï ´çȤ°¨À» ³Ñ¾î ¸¸°¨ÀÌ ±³Â÷ÇÏÁö ¾ÊÀ»±î ½Í´Ù.
Everlight Electronics Co., Ltd. (www.everlight.com)´Â District Court for the Eastern District of Michigan¿¡ Emcore Corp.(www.emcore.com)ÀÌ ¼ÒÀ¯Çϰí ÀڽŵéÀÌ Exclusive license¸¦ °¡Áø US 6,653,215¿¡ ´ëÇÑ NichiaÀÇ Æ¯ÇãÄ§ÇØ ±ÝÁö ¹× ¼ÕÇØ¹è»ó û±¸ ¼Ò¼ÛÀ» ³Â´Ù.
US 6,653,215´Â LED metallization¿¡ °üÇÑ Æ¯Çã·Î, 2001.10.5 Ãâ¿øµÇ¾î, 2003.11.25 µî·ÏµÇ¾úÀ¸¸ç, Contact to N-GaN with AU TerminationÀ» ¹ß¸íÀÇ ¸íĪÀ¸·Î Çϰí ÀÖ´Ù. Claim 1Àº ´ÙÀ½°ú °°ÀÌ LEDÀÇ Contact Çü¼º¹æ¹ý¿¡ °üÇØ ±âÀçÇϰí ÀÖ´Ù.
A method of forming a contact on an n-type III-V semiconductor comprising the steps of:
(a) depositing Al on the n-type III-V semiconductor to provide a base layer; then
(b) depositing Ti on said base layer to provide a first barrier layer; then
(c) depositing Pt on said first barrier layer to provide a second barrier layer; then
(d) depositing Au on said second barrier layer to provide a top layer, whereby said base layer, said first barrier layer, said second barrier layer, and said top layer form a stack on the n-type semiconductor; and then
(e) annealing said n-type III-V semiconductor with said stack thereon.
(Fig. 2)
EverlightÀº NichiaÀÇ ÀڽŵéÀÌ º¸À¯ÇÑ Æ¯ÇãÄ§ÇØ ±ÝÁö û±¸¿Í ÇÔ²², Nichia º¸À¯ ƯÇã¿¡ ´ëÇÑ ¹«È¿µµ ÁÖÀåÇϰí Àִµ¥, Everlight°¡ ¹«È¿¶ó°í ÁÖÀåÇϰí ÀÖ´Â NichiaÀÇ Æ¯Çã´Â US 5,998,925(Light emitting device having a nitride compound semiconductor and a phosphor containing a garnet fluorescent material)¿Í US 7,531,960(Light emitting device with blue light LED and phosphor components)ÀÌ´Ù.
ÇÑÆí, Nichia´Â LED°ü·Ã ¹Ì±¹Æ¯Ç㸦 570¿©°Ç º¸À¯Çϰí Àִµ¥, Nichia°¡ LED¸¦ ¼¼°è ÃÖÃÊ·Î °³¹ßÇßÀ» ´ç½Ã°¡ 1980³â´ë ÈĹÝÀÌ¸é ¾Æ¸¶µµ ±âº»ÀûÀÎ ±¸Á¶ µî¿¡ °üÇÑ Æ¯Çã´Â ÀÌ¹Ì °øÁö±â¼úÀÌ µÇ¾úÀ» ¼ö ÀÖ´Ù. ±×·¸´Ù ÇØµµ º¸À¯ÇÑ Æ¯Çã, ±×°Íµµ ¾çÁúÀÇ Æ¯Ç㸦 ¸¹ÀÌ °¡Áö°í ÀÖ´Â ÀÌ»ó, Everlight°¡ Á¦±âÇÑ ´çÇØ ƯÇãÄ§ÇØ ¼Ò¼ÛÀÇ °á¸»ÀÌ ¾î¶»°Ô ³¯ °ÍÀÎÁö´Â ÇÊÀÚ °³ÀÎÀûÀ¸·Î´Â °ü½ÉÀÌ µë»Ò °£´Ù
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