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    • 21. 发明授权
    • Method of manufacturing semiconductor device
    • 制造半导体器件的方法
    • US5750443A
    • 1998-05-12
    • US793593
    • 1997-03-03
    • Kazuhisa Sakamoto
    • Kazuhisa Sakamoto
    • H01L29/73H01L21/263H01L21/331H01L21/336H01L29/30H01L29/732H01L29/74H01L29/78H01L29/861H01L21/324
    • H01L29/66295H01L21/263Y10S148/003Y10S148/004Y10S148/08Y10S148/09Y10S148/092
    • Disclosed is a method of manufacturing a semiconductor device wherein a corpuscular beam is radiated to a semiconductor substrate to create crystal defects therein. The semiconductor substrate is subjected to a heat treatment, e.g. for 1 second to 60 minutes, wherein rapid heating-up, e.g. raising temperature to 550.degree. to 850.degree. C. within 10 minutes, is done in a process prior to that of carrying out of the radiation with a corpuscular beam. By doing so, there is provided a semiconductor device which is free from degradation in electrical characteristics such as current amplification factor and has an increased switching speed, even where crystal defects are created through the radiation of corpuscular beam such as an electron beam to shorten the carrier lifetime. Thus, the inventive semiconductor device is satisfied by both requirements of switching speed and electrical characteristic.
    • PCT No.PCT / JP96 / 01906 371日期1997年3月3日 102(e)1997年3月3日PCT PCT 1996年7月9日PCT公布。 公开号WO97 / 03458 日期1997年1月30日公开是制造半导体器件的方法,其中将红色光束照射到半导体衬底以在其中产生晶体缺陷。 对半导体衬底进行热处理,例如, 1秒至60分钟,其中快速加热,例如, 在10分钟内将温度升至550℃至850℃,在用红细胞束进行辐射之前的过程中进行。 通过这样做,提供了一种半导体器件,其即使在通过诸如电子束的粒子束的辐射产生晶体缺陷的情况下,也不会有诸如电流放大因子等电特性的劣化,并且具有增加的切换速度,以缩短 载体寿命。 因此,本发明的半导体器件通过开关速度和电特性的要求都得到满足。
    • 22. 发明授权
    • Method of making photodiodes for low dark current operation having
geometric enhancement
    • 制造具有几何增强的低暗电流操作的光电二极管的方法
    • US5593902A
    • 1997-01-14
    • US247747
    • 1994-05-23
    • Peter D. DreiskeArthur M. TurnerDavid I. Forehand
    • Peter D. DreiskeArthur M. TurnerDavid I. Forehand
    • H01L31/0352H01L31/103H01L31/18
    • H01L31/03529H01L31/1032Y02E10/50Y10S148/08Y10S257/91Y10S438/965
    • A substantial portion of the material at the pn junction (27) of the photodiode (37, 41) having an implanted region extending to a surface thereof is selectively removed (39), leaving a very small junction region (35, 43) with the remainder of the p-type (23) and n-type (25) material of each photodiode being spaced apart or electrically isolated at what was originally the junction. In the ion implanted n-type on p-type approach, the majority of the signal is created in the implanted n-type region while the majority of the noise is generated in the p-type region. By selectively removing p-type material, n-type material or both from the pn junction of the diode or otherwise electrically isolating most of the p-type and n-type regions from each other at the pn junction and thereby minimizing the pn junction area, noise is greatly reduced without affecting the signal response of the photodiode. With this approach, the present implant technology can still be used with the achievement of high temperature operational capability above 77.degree. Kelvin and up to about 110.degree. Kelvin.
    • 在具有延伸到其表面的注入区域的光电二极管(37,41)的pn结(27)处的大部分材料被选择性地去除(39),留下非常小的结区域(35,43),其中 每个光电二极管的p型(23)和n型(25)材料的剩余部分在原来的结处间隔开或电隔离。 在离子注入n型p型方法中,大部分信号在植入的n型区域中产生,而大部分噪声在p型区域中产生。 通过从二极管的pn结选择性地去除p型材料,n型材料或两者,或者在pn结处将大部分p型和n型区域彼此电绝缘,从而使pn结面积最小化 ,噪声大大降低,而不影响光电二极管的信号响应。 通过这种方法,目前的植入技术仍然可以用于实现高于77°开尔文和高达约110开氏度的高温操作能力。
    • 27. 发明授权
    • Method for forming electrical contact to the optical coating of an
infrared detector from the backside of the detector
    • 从检测器的背面形成与红外探测器的光学涂层的电接触的方法
    • US5646066A
    • 1997-07-08
    • US396944
    • 1995-03-01
    • Steven N. FrankJames F. BelcherCharles E. StanfordRobert A. OwenRobert J. S. Kyle
    • Steven N. FrankJames F. BelcherCharles E. StanfordRobert A. OwenRobert J. S. Kyle
    • H01L31/0216H01L31/0224H01L21/44
    • H01L31/022408H01L31/02161Y10S148/08Y10S148/135Y10S438/977
    • This is a system and method of forming an electrical contact to the optical coating of an infrared detector. The method may comprise: forming thermal isolation trenches 22 in a substrate 20; depositing a trench filler 24 in the thermal isolation trenches 22; depositing a common electrode layer 31 over the thermal isolation trenches 22; depositing an optical coating 26 above the common electrode layer 31; mechanically thinning the substrate to expose the trench filler 24; etching to remove the trench filler 24 in the bias contact area; depositing a contact metal 34 on the backside of the substrate 20, wherein the contact metal 34 connects to the common electrode layer 31 at bias contact areas 34 around a periphery of the thermal isolation trenches; and etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20. Bias contact vias 23 may be formed in the bias contact areas and then filled with bias contact metal 49. Alternately, the bias contact vias may also be filled with the contact metal 34. The thermal isolation trenches may be formed by laser vaporization, ion milling or other equivalent methods. In addition, an elevation layer may be formed between the optical coating and the substrate to provide greater tolerances for ion milling. The elevation layer may be filled with a trench filler and then removed after milling. Alternately, the elevation layer may be filled with a metal 49 to connect the bias contact metal to the common electrode in the bias contact areas.
    • 这是形成与红外检测器的光学涂层的电接触的系统和方法。 该方法可以包括:在衬底20中形成热隔离沟槽22; 在热隔离槽22中沉积沟槽填料24; 在热隔离槽22上沉积公共电极层31; 在公共电极层31上沉积光学涂层26; 机械地使衬底变薄以暴露沟槽填料24; 蚀刻以去除偏压接触区域中的沟槽填料24; 在衬底20的背面沉积接触金属34,其中接触金属34在围绕热隔离沟槽的周边的偏置接触区域34处连接到公共电极层31; 并且蚀刻接触金属34和沟槽填充剂24以形成接触金属34和衬底20的像素台面。可以在偏置接触区域中形成偏置接触通孔23,然后用偏置接触金属49填充。或者,偏置 接触通孔也可以用接触金属34填充。热隔离沟槽可以通过激光蒸发,离子研磨或其它等效方法形成。 此外,可以在光学涂层和基板之间形成升高层,以提供更大的离子铣削公差。 仰角层可以填充沟槽填料,然后在研磨后除去。 或者,仰角层可以用金属49填充,以将偏置接触金属连接到偏置接触区域中的公共电极。
    • 30. 发明授权
    • Monolithic extrinsic silicon infrared detectors with an improved charge
collection structure
    • 具有改进的电荷收集结构的单片非晶硅红外探测器
    • US4142198A
    • 1979-02-27
    • US702548
    • 1976-07-06
    • Ronald M. FinnilaStephen C. Su
    • Ronald M. FinnilaStephen C. Su
    • H01L27/148H01L29/78G11C19/28H01L27/14H01L31/00
    • H01L27/14875Y10S148/08
    • There is disclosed an all silicon monolithic focal plane array of infrared detectors for image detection. The structure comprises an epitaxial layer grown on an extrinsically doped silicon substrate. The detectors are formed in and extend through the substrate, the material of which is sensitive to specific wavelength infrared signals according to the dopant used in the substrate. The collection of charges takes place on a buried layer formed around a portion of the epitaxial layer-substrate interface, and the charges are then transferred through a surface layer of the same conductivity type to the surface of the epitaxial layer. The signal readout function is performed by a charge coupled device shift register constructed in the epitaxial layer by providing selectively spaced electrodes in an insulating layer. Carriers generated in the detector by incident infrared radiation are collected into the buried layer and then pass through the surface layer, are injected therefrom into the CCD shift register and are detected at the output. The monolithic construction and the use of an epitaxial layer to form the CCD shift register result in high yield and high efficiency devices. The planar surface of the device improves the aluminum step coverage for a more reliable device, and the use of the buried layer improves the fill factor of the detector.
    • 公开了用于图像检测的全硅单片焦平面阵列红外探测器。 该结构包括在外掺硅衬底上生长的外延层。 检测器形成并延伸穿过衬底,根据衬底中使用的掺杂剂,其材料对特定波长的红外信号敏感。 电荷的收集发生在围绕外延层 - 衬底界面的一部分形成的掩埋层上,然后电荷通过相同导电类型的表面层转移到外延层的表面。 通过在绝缘层中提供选择性间隔的电极,通过在外延层中构造的电荷耦合器件移位寄存器来执行信号读出功能。 通过入射红外辐射在检测器中产生的载体被收集到掩埋层中,然后通过表面层,从其中注入到CCD移位寄存器中,并在输出端检测。 单片结构和使用外延层形成CCD移位寄存器导致高产量和高效率器件。 器件的平面可以提高铝合金台阶的覆盖范围,使其更可靠,并且掩埋层的使用提高了检测器的填充系数。