http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
미세피치용 Cu/SnAg 더블 범프 플립칩 어셈블리의 신뢰성에 관한 연구
손호영,김일호,이순복,정기조,박병진,백경욱,Son, Ho-Young,Kim, Il-Ho,Lee, Soon-Bok,Jung, Gi-Jo,Park, Byung-Jin,Paik, Kyung-Wook 한국마이크로전자및패키징학회 2008 마이크로전자 및 패키징학회지 Vol.15 No.2
본 논문에서는 유기 기판 위에 $100{\mu}m$ 피치를 갖는 플립칩 구조인 Cu(60 um)/SnAg(20 um) 더블 범프 플립칩 어셈블리를 구현하여 이의 리플로우, 고온 유지 신뢰성, 열주기 신뢰성, Electromigration 신뢰성을 평가하였다. 먼저, 리플로우의 경우 횟수와 온도에 상관없이 범프 접속 저항의 변화는 거의 나타나지 않음을 알 수 있었다. 125도 고온 유지 시험에서는 2000시간까지 접속 저항 변화가 관찰되지 않았던 반면, 150도에서는 Kirkendall void의 형성으로 인한 접속 저항의 증가가 관찰되었다 또한 Electromigration 시험에서는 600시간까지 불량이 발생하지 않았는데 이는 Al금속 배선에서 유발되는 높은 전류 밀도가 Cu 칼럼의 높은 두께로 인해 솔더 영역에서는 낮아지기 때문으로 해석되었다. 열주기 시험의 경우, 400 cycle 이후부터 접속 저항의 증가가 발견되었으며, 이는 열주기 시험 동안 실리콘 칩과 Cu 칼럼 사이에 작용하는 압축 변형에 의해 그 사이에 있는 Al 및 Ti 층이 바깥쪽으로 밀려나감으로 인해 발생하는 것으로 확인되었다. In this study, reliabilities of Cu (60 um)/SnAg (20 um) double-bump flip chip assemblies were investigated for the flip chip interconnections on organic substrates with 100 um pitch. After multiple reflows at $250^{\circ}C\;and\;280^{\circ}C$, bump contact resistances were almost same regardless of number of reflows and reflow temperature. In the high temperature storage test, there was no bump contact resistance change at $125^{\circ}C$ up to 2000 hours. However, bump contact resistances slightly increased at $150^{\circ}C$ due to Kirkendall voids formation. In the electromigration test, Cu/SnAg double-bump flip chip assemblies showed no electromigration until about 600 hours due to reduced local current density. Finally, in the thermal cycling test, thermal cycling failure mainly occurred at Si chip/Cu column interface which was found out the highest stress concentration site in the finite element analysis. As a result, Al pad was displaced out under thermal cycling. This failure mode was caused by normal compressive strain acting Cu column bumps along perpendicular direction of a Si chip.
심성흠 ( Sung Heum Sim ),감철우 ( Cheol Woo Kam ),김진영 ( Jin Young Kim ),백상인 ( Sang In Baek ),이병권 ( Byung Gwon Lee ),손호영 ( Ho Young Son ) 대한경락경혈학회 2009 Korean Journal of Acupuncture Vol.26 No.4
Objectives: The object of this study is to report on the theory of Ohaeng-Hwa Acupuncture Therapy. Methods: The theory of Ohaeng-Hwa Acupuncture Therapy(OHAT; 五行和針法) is a part of the Five Elements Theory unique to Korea. This research Classic of Difficulty Issues-Nan Jing review Ohaeng-Hwa Acupuncture Therapy. Results: OHAT, created and developed by Jae-hoon Song, integrates the victor-vanquished as well as the son-mother relationship of the Five Elements of breakdown and restoration of balance between yin and yang. And also, it provides resources and data on The seventy fifth Nan(75難), The sixty ninth Nan(69難) of Classic of Difficulty Issues-Nan Jin 75, 69. OHAT establishes objectiveness and accuracy of diagnosis based upon the traditional method and procedure of pulse taking. In OHAT, a person`s state of illness is diagnosed by applying the comparative examination of the palpitation of the pulse. It is the fact that the pulse varies according to the state, and that OHAT treatment has proven the positive results by using the victor-vanquished relationship on The Nan Jin 75. On the basis of this, it is necessary to add the sixty ninth Nan(69難), to research the theory of the generation of the Five Element. Conclusions: Ohaeng-Hwa Acupuncture is very effective in treating the wide range of illness, and thus it has gained an increasing attention of many scholars and practitioners in the field of traditional Korean oriental medicine. However, it is the first theoretical attempt to the clinical research and scientific methodology of Ohaeng(Five) Ohaeng-Hwa Acupuncture, and more active Ohaeng-Hwa Acupuncture R&D is being conducted nationwide.
갑상선기능항진증(甲狀腺機能亢進症)으로 진단(診斷)된 소양인(少陽人) 흉격열증(胸膈熱證) 환자(患者)의 치험(治驗) 1例
손호영 ( Ho Young Son ),김봉석 ( Bong Suk Kim ),김경순 ( Kyung Soon Kim ),김승모 ( Seung Mo Kim ),최홍식 ( Hong Sik Choi ) 대구한의대학교 제한동의학술원 2014 東西醫學 Vol.39 No.1
Objectives : The aim of this study was to investigate diagnosis and treatment based on Sasang Constitutional Medicine (四象醫學) on hyperthyroidism. Method : We diagnosed a hyperthyroid patient as Soyangin Heat Sensation in the Chest(少陽人 胸膈熱證). We started treatment with Sasang-bang(四象方) for the first 7 days, and then we treated with contemporary Sasang-bang and antithyroid drugs for the later 14 days. The patient`s subjective and objective symptoms were observed daily throughout the hospitalization period, and thyroid function index was measured to gauge the progress. Results : The patient`s ymptoms and thyroid function index were improved. Conclusions : The results show Sasang-bang can be used to treat hyperthyroidism with Heat Sensation in the Chest of Soyangin. We consider that Sasang Constitutional treatment can contribute to cure hyperthyroidism.