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    • 11. 发明授权
    • Buried channel MESFET with backside source contact
    • 埋地通道MESFET与背面源接触
    • US4624004A
    • 1986-11-18
    • US755534
    • 1985-07-15
    • Joseph A. Calviello
    • Joseph A. Calviello
    • H01L29/417H01L29/80H01L29/06H01L29/20
    • H01L29/4175
    • The fabrication of high performance and reliable Buried Channel Field Effect Transistor (BCFET) using Schottky gate junction and heavily doped N layers for the source and drain electrode is described. The BCFET is composed of a semi-insulating substrate in which two N layers for the drain electrodes and one N layer for the source electrode are formed in one of the semi-insulating surface. The N source electrode is centrally located between the two N drain electrodes and all three lie in the same plane. The source and drain electrodes are separated by a thin semi-insulating layer, the length of which can range from 0.5 micron to several micron range, depending on the desired voltage breakdown. A Schottky gate is defined in an active N layer directly above the source N layer. The ohmic contacts for the source and drain N layers are defined several microns away from the Schottky junction, resulting in a considerable improvement in device reliability. Reliability is further enhanced by the fact that the resulting device is buried within the material where it is insulated from the ambient.
    • 描述了使用肖特基栅极结和用于源极和漏极的重掺杂N层的高性能和可靠的埋地沟道场效应晶体管(BCFET)的制造。 BCFET由半绝缘基板构成,其中在半绝缘表面之一上形成有用于漏电极的两个N层和用于源电极的一个N层。 N源电极位于两个N个漏极之间的中心,所有三个位于同一平面。 根据所需的电压击穿,源极和漏极由薄的半绝缘层分隔开,半绝缘层的长度可以在0.5微米到几微米的范围内。 在源N层正上方的有源N层中定义肖特基门。 用于源极和漏极N层的欧姆接触距离肖特基结约几微米,导致器件可靠性的显着提高。 通过将所得到的装置埋在材料中与绝缘材料绝缘的事实进一步增强了可靠性。
    • 12. 发明授权
    • Light sensitive detector
    • 光敏探测器
    • US4549194A
    • 1985-10-22
    • US365352
    • 1982-03-29
    • Joseph A. Calviello
    • Joseph A. Calviello
    • H01L31/0352H01L31/101H01L31/00
    • H01L31/101H01L31/03529Y02E10/50
    • A tunnel diode having a generally rectangular junction area in the 10.sup.-10 to 10.sup.-11 cm.sup.2 range formed in a quasi-planar structure of a first metal, an oxide of the first metal and a second metal. The first metal may be tantalum or other similarly slow oxidizable metals. The second metal may be selected from a group also including tantalum. For a symmetrical junction, the first and second metals are the same, however, for an asymmetrical junction the first and second metals are different. To reduce the diode series electrical and thermal resistance, a gold layer is deposited over the first and second metals. The gold layer over the first metal is deposited everywhere except at or within a few microns of the junction. The device provides a small junction area and also negligible parasitic shunt capacitance which are necessary for efficient room temperature operation at frequencies in the submillimeter to optical region. Direct and heterodyne detection in the 10 microns region has been successfully achieved with these devices.
    • 形成在第一金属,第一金属的氧化物和第二金属的准平面结构中的10-10至10-11cm 2范围内的大致矩形结面积的隧道二极管。 第一种金属可以是钽或其它类似的缓慢的可氧化金属。 第二金属可以选自也包括钽的组。 对于对称结,第一和第二金属是相同的,然而,对于非对称结,第一和第二金属是不同的。 为了降低二极管串联电阻和热阻,金层沉积在第一和第二金属上。 第一金属上的金层沉积在除了在该结的几微米处或其附近的任何地方。 该器件提供小的接合面积以及可忽略的寄生并联电容,这是在亚毫米至光学区域的频率下有效的室温运行所必需的。 这些器件已经成功地实现了10微米区域的直接和外差检测。
    • 20. 发明授权
    • Method of making an FET by ion implantation through a partially opaque
implant mask
    • 通过部分不透明植入掩模通过离子注入制造FET的方法
    • US5030579A
    • 1991-07-09
    • US333140
    • 1989-04-04
    • Joseph A. Calviello
    • Joseph A. Calviello
    • H01L21/266H01L21/338
    • H01L29/66871H01L21/266
    • Semiconductor processing techniques and devices are provided using a partially opaque ion implantation mask to control the profile of active layers in microwave and millimeter wave monolithic integrated circuits. An N+ layer can be implanted before or after active layer formation. Selection of mask thickness enables control of active channel depth. Adjustment of gate to drain separation in MMIC FETs is also enabled, to control gate to drain voltage. Source to gate series resistance is also controlled. Multiple dielectric layers afford variable mask thicknesses to enable simultaneous formation of differing power level devices monolithically in the same substrate, including low noise high speed devices and power devices. The process and device structure provides enhanced yield, performance, uniformity and reliability.
    • 使用部分不透明的离子注入掩模提供半导体处理技术和器件,以控制微波和毫米波单片集成电路中的有源层的轮廓。 可以在活性层形成之前或之后植入N +层。 选择掩模厚度可以控制有源通道深度。 也可以调整MMIC FET中的栅极到漏极分离,以控制栅极到漏极电压。 源极栅极串联电阻也受到控制。 多个电介质层提供可变的掩模厚度以使得能够在同一衬底中同时形成不同功率电平器件,包括低噪声高速器件和功率器件。 该工艺和器件结构提高了产量,性能,均匀性和可靠性。