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    • 3. 发明授权
    • Twin diode overvoltage protection structure
    • 双二极管过压保护结构
    • US4626882A
    • 1986-12-02
    • US632098
    • 1984-07-18
    • Peter E. CottrellWilliam J. CraigRonald R. Troutman
    • Peter E. CottrellWilliam J. CraigRonald R. Troutman
    • H01L27/08H01L21/761H01L27/02H01L27/092H01L29/78
    • H01L27/0251H01L21/761H01L27/0925
    • Disclosed is an overvoltage protection structure which when used with CMOS circuits it protects them from overvoltage conditions while minimizing latch-up conditions in the structure. It consists of a well region of an opposite conductivity to that of the substrate defining a pocket region having a conductivity type which is similar to that of the substrate. A first PN junction diode is formed in a portion of the well region and a second PN junction diode is formed in the pocket region. The two diodes have opposite polarity and they both are connected to a signal line in such a way that one of the two diodes will be forward biased if the voltage on the signal line exceeds the bounds of the power supply voltages. The pocket region is connected to a V.sub.SS terminal which is normally grounded and the well region is connected to a power supply V.sub.DD. The doping concentration in the well region is predetermined to have a gradient so that minority carriers injected from one of the diodes in the well region will be repulsed and prevented from moving into the substrate region where they would be majority carriers and they could cause latch-up in the structure or at the very least adversely affect the voltage level of the substrate. Instead the injected carriers recombine in the well region or are collected by the adjacent isolated pocket region.When the second diode is forward biased, the minority carriers are injected into the isolated pocket region and are prevented from reaching the substrate by the underlying well region. This prevents these carriers from affecting the operation of adjacent circuits.
    • 公开了一种过电压保护结构,当与CMOS电路一起使用时,其保护它们免于过压状况,同时最小化结构中的闩锁状态。 它由与衬底相反的导电性的阱区域组成,该阱区限定具有类似于衬底的导电类型的穴区。 第一PN结二极管形成在阱区的一部分中,并且第二PN结二极管形成在腔区中。 两个二极管具有相反的极性,并且它们都以这样的方式连接到信号线,使得如果信号线上的电压超过电源电压的范围,则两个二极管中的一个将被正向偏置。 口袋区域连接到通常接地的VSS端子,并且阱区域连接到电源VDD。 阱区中的掺杂浓度被预定为具有梯度,使得从阱区中的二极管中的一个注入的少数载流子将被排斥并被阻止移动到它们将成为多数载流子的衬底区域中,并且它们可能导致闭锁 - 或者至少不利地影响衬底的电压电平。 相反,注入的载体在阱区域中重新组合或由相邻的隔离袋区域收集。 当第二二极管被正向偏置时,少数载流子被注入到隔离的袋区域中并被下面的阱区域阻止到达衬底。 这防止这些载波影响相邻电路的操作。
    • 6. 发明授权
    • Organic light emitting diodes having transparent cathode structures
    • 具有透明阴极结构的有机发光二极管
    • US5739545A
    • 1998-04-14
    • US794072
    • 1997-02-04
    • Supratik GuhaRichard Alan HaightJoseph M. KarasinskiRonald R. Troutman
    • Supratik GuhaRichard Alan HaightJoseph M. KarasinskiRonald R. Troutman
    • H01L51/50H01L51/52H05B33/12H05B33/14H05B33/22H05B33/26H01L35/24H01L51/00
    • H01L51/5234H01L2251/5323
    • Organic light emitting diodes having a transparent cathode structure is disclosed. The structure consists of a low work function metal in direct contact with the electron transport layer of the OLED covered by a layer of a wide bandgap semiconductor. Calcium is the preferred metal because of its relatively high optical transmissivity for a metal and because of its proven ability to form a good electron injecting contact to organic materials. ZnSe, ZnS or an alloy of these materials are the preferred semiconductors because of their good conductivity parallel to the direction of light emission, their ability to protect the underlying low work function metal and organic films and their transparency to the emitted light. Arrays of these diodes, appropriately wired, can be used to make a self-emissive display. When fabricated on a transparent substrate, such a display is at least partially transparent making it useful for heads-up display applications in airplanes and automobiles. Such a display can also be fabricated on an opaque substrate, such as silicon, in which previously fabricated devices and circuits can be used to drive the display.
    • 公开了具有透明阴极结构的有机发光二极管。 该结构由与宽带隙半导体层覆盖的OLED的电子传输层直接接触的低功函数金属组成。 由于金属具有相对较高的透光率,因此,由于已证明能够与有机材料形成良好的电子注入接触,钙是优选的金属。 ZnSe,ZnS或这些材料的合金是优选的半导体,因为它们具有与光发射方向平行的良好导电性,它们保护下层低功函数金属和有机膜的能力及其对发射光的透明度。 这些二极管的数组,适当连接,可用于进行自发光显示。 当在透明基板上制造时,这种显示器至少部分透明,使其对于在飞机和汽车中的单机显示应用是有用的。 这种显示器也可以在诸如硅的不透明衬底上制造,其中可以使用先前制造的器件和电路来驱动显示器。
    • 7. 发明授权
    • Channel hot electron monitor
    • 通道热电子监视器
    • US4382229A
    • 1983-05-03
    • US210937
    • 1980-11-28
    • Peter E. CottrellRonald R. Troutman
    • Peter E. CottrellRonald R. Troutman
    • G01R31/26G01R31/22
    • G01R31/2621
    • This teaches that by measuring the rate of change in gate current of an insulating gate field effect transistor, under normal operating conditions, the time required to achieve a predetermined change in source-to-drain current in the transistor can be found. Because changes in gate current depends more on sensitivity on charge trapping in the oxide than do changes in channel current, and since the gate current occurs only in the small region of electron emission, the effects on gate current are more quickly developed than the secondary effect of reduced channel current due to the charge in gate oxide caused by the presence of trapped electrons.
    • 这表明,通过测量绝缘栅场效应晶体管的栅极电流的变化率,在正常工作条件下,可以找到实现晶体管中源极 - 漏极电流的预定变化所需的时间。 因为栅极电流的变化更多地取决于在沟道电流中改变氧化物中的电荷捕获的灵敏度,并且由于栅极电流仅发生在电子发射的小区域中,所以对栅极电流的影响比次级效应更快地发展 由于俘获电子的存在引起的栅极氧化物中的电荷引起的沟道电流减小。
    • 8. 发明授权
    • Charge pumping structure for a substrate bias generator
    • 用于衬底偏置发生器的电荷泵浦结构
    • US4670669A
    • 1987-06-02
    • US640421
    • 1984-08-13
    • Peter E. CottrellWilliam J. CraigRonald R. Troutman
    • Peter E. CottrellWilliam J. CraigRonald R. Troutman
    • H01L27/04H01L21/822H01L27/02H03K3/354
    • H01L27/0222
    • A charge pumping structure is disclosed for use in a substrate bias voltage generator. It includes a capacitor on a substrate region for coupling to a first node periodic voltage signals received at a second node. A first diode structure provides a current path from the first node to the substrate and a second diode structure provides a current path between the first node and a reference potential, which is typically the ground. The first diode structure includes a PN junction diode, an isolation ring for collecting minority charge carriers injected into the substrate and is constructed on a portion of the substrate that has a lower doping concentration than the underlying substrate portion establishing a built-in electric field which inhibits the flow of minority carriers from the first diode to the underlying substrate. The second diode structure may include a pocket type PN junction diode constructed so that majority carriers are prevented from moving back into the substrate from which the substrate bias voltage generator will have to remove them.
    • 公开了用于衬底偏置电压发生器的电荷泵送结构。 它包括在衬底区域上的电容器,用于耦合到第一节点在第二节点处接收的周期性电压信号。 第一二极管结构提供从第一节点到衬底的电流路径,并且第二二极管结构提供第一节点和通常为地的参考电位之间的电流路径。 第一二极管结构包括PN结二极管,用于收集注入到衬底中的少数电荷载流子的隔离环,并且构建在衬底的一部分上,该衬底具有比下面的衬底部分更低的掺杂浓度,建立内置的电场, 抑制少数载流子从第一二极管流到下面的衬底。 第二二极管结构可以包括袖珍型PN结二极管,其被构造成使得多数载流子被阻止移回到衬底中,衬底偏置电压发生器将从该衬底移除它们。