Abstract:
A flash memory cell is of the type having a substrate of a first conductivity type having a first region of a second conductivity type at a first end, and a second region of the second conductivity type at a second end, spaced apart from the first end, with a channel region between the first end and the second end, a floating gate insulated from a first portion of the channel region and adjacent to the second region, a first control gate adjacent to the floating gate and insulated therefrom, and insulated from a second portion of the channel region, and adjacent to the first region, a second control gate capacitively coupled to the floating gate, and positioned over the floating gate. A method programming the cell to one of a plurality of MLC states comprises applying a current source to the first region. A first voltage is applied to the first control gate sufficient to turn on the second portion of the channel region. A second voltage is applied to the second region, sufficient to cause electrons to flow from the first region towards the second region. A third voltage is applied to the second control gate sufficient to cause electrons in the channel region to be injected onto the floating gate. The third voltage is applied uninterrupted until the floating gate is programmed to the one state.
Abstract:
A nonvolatile reprogrammable switch for use in a PLD or FPGA has a nonvolatile memory cell connected to the gate of an MOS transistor with the terminals of the MOS transistor connected to the source of the signal and to the circuit. The nonvolatile memory cell is of a split gate type having a floating gate positioned over a first portion of the channel and a control gate positioned over a second portion of the channel with electrons being injected onto the floating gate by hot electron injection mechanism. The nonvolatile memory cell is erased by the action of the electrons from the floating gate being tunneled through Fowler-Nordheim tunneling onto the control gate, which is adjacent to the second region. As a result, no high voltage is ever applied to the second region during program or erase. Thus, the nonvolatile memory cell with the second region can be connected directly to the gate of the MOS transistor, which together therewith forms a nonvolatile reprogrammable switch.
Abstract:
A phase change memory device, and method of making the same, that includes a trench formed in insulation material having opposing sidewalls that are inwardly sloping with trench depth. A first electrode is formed in the trench. Phase change memory material is formed in electrical contact with the first electrode. A second electrode is formed in electrical contact with the phase change memory material. Voids are formed in the insulation material to impede heat from the phase change memory material from conducting away therefrom. The voids are formed in pairs, with either a portion of the phase change memory material or the second electrode disposed between the voids.
Abstract:
Systems and methods associated with semiconductor articles are disclosed, including forming a first layer of material on a substrate, etching trenches within regions defining a passive element in the first layer, forming metal regions on sidewalls of the trenches, and forming a region of dielectric or polymer material over or in the substrate. Moreover, an exemplary method may also include forming areas of metal regions on the sidewalls of the trenches such that planar strip portions of the areas form electrically conductive regions of the passive element(s) that are aligned substantially perpendicularly with respect to a primary plane of the substrate. Other exemplary embodiments may comprise various articles or methods including capacitive and/or inductive aspects, Titanium- and/or Tantalum-based resistive aspects, products, products by processes, packages and composites consistent with one or more aspects of the innovations set forth herein.
Abstract:
A method of trimming down the volume of a semiconductor resistor element using electrical resistance feedback. After forming conductive material disposed between a pair of electrodes, a voltage is applied to the electrodes to produce an electrical current through the conductive material sufficient to heat and melt away a portion of the conductive material. By reducing the volume of the conductive material, its resistance is increased. The application of the voltage is ceased once the desired dimensions (and thus resistivity) of the conductive material is reached. The resulting semiconductor resistor element could have a fixed resistance, or could have a variable resistance (by using phase change memory material).
Abstract:
A novel chalcogenide material has a bulk composition which has a first material selected from the group of Si and Sn, a second material selected from the group of Sb, and a third material selected from the group of Te. The first material, second material, and third material are in a ratio of (Six or Sny) Sb2 Te5, where x is 1≦x≦5, and y is 0.5≦y≦2.0. The material can be used in a switch device, which includes a dielectric/heater layer having a first surface and a second surface opposite the first surface, and the material having a first surface and a second surface opposite the first surface; with the first surface of the material immediately adjacent to and in contact with the first surface of the dielectric/heater layer. A first electrical contact is on the second surface of the dielectric/heater layer. A second electrical contact is on the second surface of the phase changing chalcogenide material. A third electrical contact is on the second surface of the phase changing chalcogenide material, spaced apart from the second electrical contact. The switching device can be programmed such that the channel length separation between the second electrical contact and the third electrical contact on the phase changing chalcogenide material is changed to represent the desired state to be stored in the device. Finally, an array of the above described non-volatile memory cells can be formed in a dielectric/heater layer and the chalcogenide material.
Abstract translation:新型硫族化物材料具有本体组合物,其具有选自Si和Sn的第一材料,选自Sb的第二材料和选自Te组的第三材料。 第一材料,第二材料和第三材料的比例为(Si x Si x Si y Sb y Sb 2 Sb 2 O 3) SUB>,其中x是1 <= x <= 5,y是0.5 <= y <= 2.0。 该材料可以用在开关装置中,其包括具有第一表面和与第一表面相对的第二表面的电介质/加热器层,并且该材料具有与第一表面相对的第一表面和第二表面; 其中材料的第一表面紧邻电介质/加热器层的第一表面并与其接触。 电介质/加热器层的第二表面上具有第一电接触。 第二个电触点位于相变硫族化物材料的第二个表面上。 相变硫族化物材料的第二表面上的第三电接触与第二电触点间隔开。 切换装置可以被编程为使得在相变硫属化物材料上的第二电接触和第三电接触之间的通道长度间隔被改变以表示要存储在设备中的期望状态。 最后,可以在电介质/加热器层和硫族化物材料中形成上述非易失性存储单元的阵列。
Abstract:
An integrated circuit programmable resistor or programmable capacitor has a floating gate memory cell connected either in series or in parallel to a fixed resistor or a fixed capacitor. The resistance or the capacitance of the floating gate memory cell can be changed by the amount of charge stored on the floating gate which affects the resistance or the capacitance of the channel from which the floating gate is spaced apart. A particular application of the programmable resistor/capacitor is used in a system whereby the resistance or the capacitance can be change or fine tuned as a result of either drift caused by time or by operating conditions such as temperature. Thus, the temperature of the substrate in which the floating gate memory cell is fabricated can be monitored and the resistance or the capacitance of the floating gate memory cell changed dynamically.
Abstract:
A method of forming an array of floating gate memory cells, and an array formed thereby, wherein a trench is formed into a surface of a semiconductor substrate. The source region is formed underneath the trench, the drain region is formed along the substrate surface, and the channel region therebetween includes a first portion extending vertically along the trench sidewall and a second portion extending horizontally along the substrate surface. The floating gate is disposed in the trench adjacent to and insulated from the channel region first portion. The control gate is disposed over and insulated from the channel region second portion. The trench sidewall meets the substrate surface at an acute angle to form a sharp edge. The channel region second portion extends from the second region in a direction toward the sharp edge and the floating gate to define a path for programming the floating gate with electrons via hot electron injection.
Abstract:
A method of forming a floating gate memory cell array, and the array formed thereby, wherein a trench is formed into the surface of a semiconductor substrate. The source and drain regions are formed underneath the trench and along the substrate surface, respectively, with a non-linear channel region therebetween. The floating gate has a lower portion disposed in the trench and an upper portion disposed above the substrate surface and having a lateral protrusion extending parallel to the substrate surface. The lateral protrusion is formed by etching a cavity into an exposed end of a sacrificial layer and filling it with polysilicon. The control gate is formed about the lateral protrusion and is insulated therefrom. The trench sidewall meets the substrate surface at an acute angle to form a sharp edge that points toward the floating gate and in a direction opposite to that of the lateral protrusion.
Abstract:
An integrated circuit programmable resistor or programmable capacitor has a floating gate memory cell connected either in series or in parallel to a fixed resistor or a fixed capacitor. The resistance or the capacitance of the floating gate memory cell can be changed by the amount of charge stored on the floating gate which affects the resistance or the capacitance of the channel from which the floating gate is spaced apart. A particular application of the programmable resistor/capacitor is used in a system whereby the resistance or the capacitance can be change or fine tuned as a result of either drift caused by time or by operating conditions such as temperature. Thus, the temperature of the substrate in which the floating gate memory cell is fabricated can be monitored and the resistance or the capacitance of the floating gate memory cell changed dynamically.