Abstract:
A phase change memory device including multi-bit cells and a method for programming the same are provided to improve a degree of integration thereof by storing information of two bits and more in unit cells. A phase change material layer(17) is provided as an information storage element. A first electrode(15) comes in contact with a part of a first surface of the phase change material layer in order to obtain first contact resistance. The first electrode is used as a heater to cause a phase change of the phase change material layer adjacent thereto. A second electrode(19) comes in contact with a part of a second surface of the phase change material layer in order to obtain second contact resistance different from the first contact resistance. The second electrode is used as a heater to cause the phase change of the phase change material layer adjacent thereto.
Abstract:
A resistive memory element having multi-resistive states, a resistive memory cell and an operation method thereof, and a data processing system using the resistive memory element are provided to simplify a driving circuit of a memory device and to reduce a driving voltage, by making driving signals, such as a reset voltage, a set current and a read voltage, have the same polarity. In a resistive memory element indicating resistive states of numerous levels, the resistive memory element includes two-component metal oxide. The two-component metal oxide is changed to at least one middle resistive state having lower resistance than a high resistive state and a low resistive state having lower resistance than the middle resistive state, from the high resistive state, by applying a current.
Abstract:
본 발명은 디지털 멀티미디어 방송 수신이 가능한 이동 통신 단말이 표시 장치의 표시화면 크기에 따라 디지털 멀티미디어 방송 영상을 적응적으로 디스플레이하기 위해 표시화면의 가로 길이와 세로 길이 비율에 따라 DMB 영상을 90°회전하여 디스플레이하기 때문에, DMB 영상의 왜곡을 줄일 수 있고, 사용자 또한, 양질이 DMB를 시청할 수 있다. 디지털 멀티미디어 방송 영상, 이동 통신 단말, 표시화면