Abstract:
A dual gate field effect transistor including first and second gates comprises a conductive region, wherein a potential difference between a second gate electrode section and the conductive region is larger than that between the second gate electrode section and a channel operation region.
Abstract:
A semiconductor device includes a number of programmable elements arranged in a matrix of rows and columns. The elements each have a doped semiconductor region (10) and a conductor region (20) which are mutually separated by an insulating layer (8). The conductor region (20) can be a material suitable for forming a rectifying junction (35) with the material of the semiconductor region (10). Within a row, the conductor regions of the programmable elements present therein are coupled to a common row conductor (21 . . . 23), and within a column the semiconductor regions of the programmable elements situated therein are connected to a common column conductor (11 . . . 14). To program an element, a programming voltage V.sub.PROG can be applied between the column and row conductors associated with the element to be programmed during operation, which voltage is greater than the breakdown voltage of at least a portion of the insulating layer (8) situated between the semiconductor region (10) and the conductor region (20) of the element. The programming voltage is applied with such a polarity that majority charge carriers in the semiconductor region (10) are drawn to an interface (4) between the semiconductor region (10) and the insulating layer (8), forming an accumulation layer (31) there. Between the remaining column and row conductors, on the other hand, the programming voltage is offered with an opposite polarity. Thus the programming of the matrix can take place, if so desired, by means of only a single voltage level V.sub.PROG.
Abstract:
A method for producing a mask ROM having an array of memory cells in which pn junctions obtained by introducing P-type impurities by ion implantation onto the surface of an N-type electrically conductive layers obtained in turn by introducing N-type impurities into the polysilicon layers are formed as memory cells in a matrix configuration. The polysilicon layers that are to be rendered into the N-type electrically conductive layers are previously monocrystallized by laser annealing. In this manner, the N-type electrically conductive layers into which P-type impurities are introduced by ion implantation at the time of formation of the pn junction are turned into a monocrystalline layer so that the surface of the N-type electrically conductive layers may be uniformly and easily converted into the P-type by this ion implantation. In short, the junction surface of the pn junction used as the memory cell becomes uniform. In this manner, the memory cell having desirable pn junction properties, that is, suited for practical application, may be produced easily.
Abstract:
In the disclosed computer, a plurality of register means for storing digital operands and control signals are in a semiconductor substrate; an arithmetic means for performing functional opertions on the operands are also in the substrate; an insulating layer covers the register means and the arithmetic means; and an interconnect matrix is on top of this insulating layer. The interconnect matrix includes pluralities of logic gates coupled through the insulating layer to the register means and arithmetic means and selectively interconnects them in response to the control signals.
Abstract:
In a diode matrix of a permanent memory (ROM) the word line and bit line system is formed by a system of strip-shaped zones of one conductivity type provided in the silicon body and in the another system is formed by polycrystalline silicon tracks of the opposite conductivity type provided on the surface and forming mono-poly p-n junctions with the strip-shaped zones. High packing density and high speed are obtained.
Abstract:
A non-linear element, such as a diode, in which an oxide semiconductor is used and a rectification property is favorable is provided. In a thin film transistor including an oxide semiconductor in which the hydrogen concentration is less than or equal to 5×1019/cm3, the work function φms of a source electrode in contact with the oxide semiconductor, the work function φmd of a drain electrode in contact with the oxide semiconductor, and electron affinity χ of the oxide semiconductor satisfy φms≦χ
Abstract:
A non-linear element, such as a diode, in which an oxide semiconductor is used and a rectification property is favorable is provided. In a thin film transistor including an oxide semiconductor in which the hydrogen concentration is less than or equal to 5×1019/cm3, the work function φms of a source electrode in contact with the oxide semiconductor, the work function φmd of a drain electrode in contact with the oxide semiconductor, and electron affinity χ of the oxide semiconductor satisfy φms≦χ
Abstract:
The present disclosure provides systems and methods for configuring and constructing a single photo detector or array of photo detectors with all fabrications circuitry on a single side of the device. Both the anode and the cathode contacts of the diode are placed on a single side, while a layer of laser treated semiconductor is placed on the opposite side for enhanced cost-effectiveness, photon detection, and fill factor.
Abstract:
Annular, linear, and point contact structures are described which exhibit a greatly reduced susceptibility to process deviations caused by lithographic and deposition variations than does a conventional circular contact plug. In one embodiment, a standard conductive material such as carbon or titanium nitride is used to form the contact. In an alternative embodiment, a memory material itself is used to form the contact. These contact structures may be made by various processes, including chemical mechanical planarization and facet etching.
Abstract:
A light-emitting element array with the improvement of the light-emitting efficiency and the improvement of the uneven amount of light is provided.A light-emitting element array comprises a light-emitting portion array consisting of a plurality of light-emitting portions linearly arranged in a main scanning direction, and a micro-lens formed on each of the light-emitting portions, wherein the micro-lens has a shape of the length of a sub-scanning direction different from the length of the main scanning direction, and the length of the sub-scanning direction is longer than the length of the main scanning direction, and is 3.5 times or less of the length of the main scanning direction.