Abstract:
공정을 단순화시키며, 기판의 냉각을 효율적으로 수행시키고, 플라즈마 이온 플럭스의 흐름을 일정하게 유지할 수 있는 기판 관통 식각방법이 개시된다. 본 발명의 일 형태에 따른 기판 관통 식각방법은, 기판의 제1 면 상에 버퍼층과 금속층을 형성하고, 상기 제1 면과 반대되는 상기 기판의 제2 면 상에 식각마스크 패턴을 형성한 후 이를 식각마스크로 하여 상기 기판을 관통 식각한다. 바람직하게는 버퍼층은 이산화실리콘층이며, 금속층은 알루미늄층을 사용한다.
Abstract:
PURPOSE: A substrate etching method for forming various stepped structures and a method for fabricating a heat-sink for a three-dimensional micro-system using the same are provided to reduce a process period of time and the manufacturing cost by simplifying a fabrication process. CONSTITUTION: The first mask pattern(112) having the first hole for exposing the first region is formed on a substrate(100). The second mask pattern(114) having the second hole for exposing the second region is formed on the first mask pattern and the first region of the substrate. The first recess region(132) is formed on the second region by etching the substrate. The second recess region(134) and the third recess region are formed by etching the substrate. The second recess region and the third recess region have different stepped structures.
Abstract:
PURPOSE: A method of through-etching substrate is provided to efficiently perform a cooling processing of a substrate and to improve a profile around a penetrated hole by using a metal material. CONSTITUTION: A buffer(62) made of a silicon dioxide is formed on a surface of a silicon substrate(50) having a hole. Then, a metal film(64) made of an aluminum is formed on the buffer(62). After depositing another buffer(72) and another metal film(74) on the rear surface of the silicon substrate(50), an etch mask pattern(66) is formed on the metal film(74). After etching the metal film(74) and the buffer(72) using the etch mask pattern(66) as an etch mask, the silicon substrate(50) is penetrated by etching using the metal film(74) and the buffer(72) as another etch mask. Due to the metal films(64,74), plasma ion flux is smoothly circulated, so that a good profile is completed.