Abstract:
PURPOSE: A one-time programmable nonvolatile memory array having a vertically stacked structure and methods for operating and fabricating the same are provided to save installation fee by omitting a separate deposition device since a unit memory array is repetitively vertically laminated by using an existing deposition device and etching device. CONSTITUTION: A bit line(82) formed into a first conductive material is located on a substrate(10). A plurality of word lines(32,33) formed into s second conductive material is located on a substrate. The word lines are crossed with each bit line in both up and down sides while leaving each bit line in between. Insulating layers(42,43) are formed to be contacted with each word line. Semiconductor material layers(53,54,63,64) are interposed to perform PN junction between the insulating layer and each bit line.
Abstract:
PURPOSE: A one-time programmable nonvolatile memory array and a method for operating and manufacturing the same are provided to perform a reading operation using a PN junction or a Schottky junction, thereby highly integrating a memory array by an existing lithographically process. CONSTITUTION: Bit lines(BL1, BL2) are formed on a semiconductor substrate(12a) by a first semiconductor material. One or more word lines(WL1, WL2, WL3) are formed by a conductive material. A second semiconductor material(16a) is interposed between the bit lines and word lines to form a PN junction with the bit lines. An insulating film(44) is formed between the second semiconductor material and the word lines. The semiconductor substrate and the second semiconductor material are P-type semiconductors.
Abstract:
본 발명은 플래시 메모리 어레이와 그 제조방법에 관한 것으로, 더욱 상세하게는 반도체 기판에 복수개의 트렌치들을 형성하고, 각 트렌치에 바닥부터 절연막을 사이에 두고 도전성 물질을 반복 적층하여 차단 게이트 라인 및 복수개의 워드라인들을 형성함으로써, 차단 게이트 라인으로 각 워드라인이 2개의 메모리 셀을 구동할 수 있게 함은 물론 워드라인의 수직 적층으로 얼마든지 집적도를 높일 수 있고, 단결정 기판을 채널영역으로 사용하여 동작속도 및 셀간 전기적 특성의 균일도(uniformity)를 높일 수 있고, 공정비용을 획기적으로 줄일 수 있는 차단 게이트 라인을 갖는 3차원 스택 어레이 및 그 제조방법에 관한 것이다.