摘要:
Apparatus and method for growing oxide on silicon wafers or silicon-coated wafers or other semiconductors for the semiconductor industry wherein the oxide growth is produced under high pressure and high temperature conditions within a reaction chamber by oxidizing gases which are maintained in a continuous flow condition into and through the chamber.
摘要:
A structure and method for preventing minority carriers caused by an alpha particle, or the like, from drifting into storage regions and causing a false data bit. In a high density MOS circuit, a single alpha particle including one originating within the substrate or circuit package can generate enough carriers to give a false data bit. A minority carrier reflective barrier is employed to prevent substantial numbers of minority carriers from drifting into the active layer. In the presently preferred embodiment, this barrier is formed by ion implanting the upper surface of the substrate.
摘要:
Apparatus and method for growing oxide on silicon wafers or silicon-coated wafers or other semiconductors for the semiconductor industry wherein the oxide growth is produced under high pressure and high temperature conditions within a reaction chamber by oxidizing gases which are maintained in a continuous flow condition into and through the chamber.
摘要:
Noninvasive methods and apparatuses measuring the intraocular pressure (IOP) of the eye using vibratory excitation are disclosed. Prior art methods teaches that the natural frequencies of the eye vary as a function of the IOP, with each natural frequency being zero at zero IOP. The present invention recognizes that the eye has different and separate classes of natural frequencies that vary as function of the IOP, which have non-zero values for a zero value of IOP, and which have curves that extrapolate to negative IOPs to obtain zero values of frequency. Preferred methods and apparatuses of the present invention measure a first natural frequency of this class at an unknown IOP value, and thereafter compare it to one or more known values of the first natural frequency measured at corresponding known IOPs to estimate value of the unknown IOP. Preferred embodiments include measuring one or more additional natural frequencies.