Patent ID: 7834341
Filing Date: 2010-11-16
Classification: H01L

Abstract:
1. A method, comprising: forming a bipolar junction transistor (BJT) structure on a substrate, including creating a base of the BJT structure on the substrate and creating an emitter of the BJT structure on the base; forming a heating element on the emitter of the BJT structure such that a center axis of the heating element is substantially aligned with a center axis of the BJT structure, the center axis of the BJT structure being a common center axis of the emitter and the base of the BJT structure; forming a phase change material (PCM) cell on the heating element such that a center axis of the PCM cell is not aligned with the center axis of the heating element; and forming a bit line such that a center axis of the bit line is substantially aligned with the center axis of the PCM cell.