Semiconductor device and manufacturing method thereof
    12.
    发明授权
    Semiconductor device and manufacturing method thereof 失效
    半导体装置及其制造方法

    公开(公告)号:US06242787B1

    公开(公告)日:2001-06-05

    申请号:US08748896

    申请日:1996-11-15

    IPC分类号: H01L2976

    摘要: A semiconductor device including a reduced surface field strength type LDMOS transistor which can prevent the breakdown of elements at channel formation portions when a reverse voltage is applied to its drain. A P well and an N well are formed in an N-type substrate to produce a double-well structure, with a source electrode being set to be equal in electric potential to the N-type substrate. The drift region of the N well has a dopant concentration to satisfy the so-called RESURF condition, which can provide a high breakdown voltage a low ON resistance. When a reverse voltage is applied to a drain electrode, a parasitic bipolar transistor comprising the N well, the P well and the N-type substrate develops to form a current-carrying path toward a substrate, so that the element breakdown at the channel formation portions is avoidable at the application of the reverse voltage.

    摘要翻译: 一种包括减小表面场强度型LDMOS晶体管的半导体器件,其可以防止当向其漏极施加反向电压时在沟道形成部分处的元件的击穿。 在N型衬底中形成P阱和N阱以产生双阱结构,其中源极被设置为与N型衬底的电位相等。 N阱的漂移区域具有掺杂浓度以满足所谓的RESURF条件,其可以提供高的击穿电压低导通电阻。 当向漏极施加反向电压时,包括N阱,P阱和N型衬底的寄生双极晶体管形成朝向衬底的通电路径,使得元件在沟道形成时击穿 在施加反向电压时部分是可避免的。

    High withstand voltage type semiconductor device having an isolation
region
    14.
    发明授权
    High withstand voltage type semiconductor device having an isolation region 失效
    具有隔离区域的高耐压型半导体器件

    公开(公告)号:US5644157A

    公开(公告)日:1997-07-01

    申请号:US653924

    申请日:1996-05-22

    摘要: A semiconductor device which can compatibly achieve the improvement of the withstand voltage and the integration degree. A PN junction between a buried collector region 3 and a collector withstand voltage region 4 is subjected to reverse bias, and a depletion layer in the PN junction reaches a side dielectric isolation region 9a which dielectrically isolates the side of the collector withstand voltage region 4. A circumferential semiconductor region 14 which is in adjacency to the collector withstand voltage with the side dielectric isolation region 9a therebetween has an electric potential that is approximate to that at a base region 5 rather than that at the buried collector region 3. As a result, the depletion layer is subjected to the effect of low electric potential from both the base region 5 and the circumferential semiconductor region 14. This mitigates electrostatic focusing in the vicinity of the corner parts between the sides of the base region 5 and the bottom thereof, restraining the avalanche breakdown there and improving the withstand voltage there.

    摘要翻译: 能兼容地实现耐压提高和集成度的半导体装置。 掩埋集电极区域3和集电极耐压区域4之间的PN结经受反向偏压,并且PN结中的耗尽层到达介电隔离区域9a,该介电隔离区域9a介电地隔离集电极耐压区域4的侧面。 与其间的侧绝缘隔离区域9a相邻的集电极耐电压的周向半导体区域14具有接近于基极区域5处的电位,而不是埋藏集电极区域3的电位。结果, 耗尽层受到基极区域5和周围半导体区域14两者的低电位的影响。这减轻了基部区域5的侧面与其底部之间的角部附近的静电聚焦,约束 雪崩击穿,并提高耐压。

    Method of preparing thin film resistors
    15.
    发明授权
    Method of preparing thin film resistors 失效
    制备薄膜电阻的方法

    公开(公告)号:US5503878A

    公开(公告)日:1996-04-02

    申请号:US292050

    申请日:1994-08-18

    CPC分类号: H01L28/24

    摘要: A method of preparing a patterned thin film resistor that is appropriately used in combination with semiconductor devices. The method comprises a thin film forming step comprising forming a thin film of a compound comprising at least one metal on an oxide film such as a silicon oxide film; a masking step comprising covering a desired area of the thin film by an organic material; a patterning step comprising converting to plasma a gas mixture comprising a fluorine compound gas and oxygen, and removing an area of the thin film, that is not covered by the organic material by exposing it to a gas containing activated fluorine by the plasma conversion; and a removing step comprising removing the organic material remaining on the desired area of the thin film.

    摘要翻译: 一种制备适合与半导体器件组合使用的图案化薄膜电阻器的方法。 该方法包括薄膜形成步骤,包括在诸如氧化硅膜的氧化膜上形成包含至少一种金属的化合物的薄膜; 掩模步骤,包括用有机材料覆盖所述薄膜的期望区域; 一种图形化步骤,包括将包含氟化合物气体和氧气的气体混合物转化成等离子体,并且通过用等离子体转换将其暴露于含有活性氟的气体中来除去未被有机材料覆盖的薄膜区域; 以及去除步骤,包括去除残留在所述薄膜的所需区域上的有机材料。

    Semiconductor device provided with isolation region
    16.
    发明授权
    Semiconductor device provided with isolation region 失效
    具有隔离区域的半导体器件

    公开(公告)号:US5449946A

    公开(公告)日:1995-09-12

    申请号:US208119

    申请日:1994-03-09

    摘要: A semiconductor device is provided in which a contact is very simply formed on conductive material for capacitive coupling prevention. Two silicon substrates are bonded through a silicon oxide film. And a trench extending to the silicon oxide film is formed in one of silicon substrates so as to isolate between plural circuit elements from each other, and islands for circuit element formation are compartmently formed by the trench. A silicon oxide film is formed on an outer periphery portion of the islands for circuit element formation. Furthermore, an island for capacitive coupling prevention is formed by the silicon substrate between the islands for circuit element formation and is applied thereto to be maintained in an electric potential of constant.

    摘要翻译: 提供了一种半导体器件,其中在导电材料上非常简单地形成接触,以防止电容耦合。 两个硅衬底通过氧化硅膜结合。 并且在硅基板之一中形成延伸到氧化硅膜的沟槽,以便在多个电路元件之间彼此隔离,并且通过沟槽隔室形成用于电路元件形成的岛。 在用于电路元件形成的岛的外周部分上形成氧化硅膜。 此外,用于电容耦合防止的岛由用于电路元件形成的岛之间的硅衬底形成,并且被施加到其上以保持恒定的电位。

    Dielectric film
    17.
    发明授权
    Dielectric film 失效
    电介质膜

    公开(公告)号:US5225286A

    公开(公告)日:1993-07-06

    申请号:US897818

    申请日:1992-06-12

    摘要: A tantalum oxide dielectric film includes tantalum oxide (Ta.sub.2 O.sub.5) as a major component, and at least one oxide selected from the group consisting of yttrium oxide (Y.sub.2 O.sub.3), tungsten oxide (WO.sub.3) and niobium oxide (Nb.sub.2 O.sub.5). This dielectric film exhibits a remarkably improved dielectric constant and insulation property because it is a composite oxide film in which Ta.sub.2 O.sub.5 is compounded with Y.sub.2 O.sub.3, WO.sub.3 or Nb.sub.2 O.sub.5. For example, when the dielectric film is used as a capacitor film, the capacitor film exhibits a figure of merit, i.e., a product of a dielectric constant and an insulation property, approximately twice the silicon oxide (SiO.sub.2) film which is used widely for the purpose at present.

    摘要翻译: 钽氧化物电介质膜包括作为主要成分的氧化钽(Ta 2 O 5)和选自氧化钇(Y 2 O 3),氧化钨(WO 3)和氧化铌(Nb 2 O 5)的至少一种氧化物。 该介电膜由于是与Y 2 O 3,WO 3或Nb 2 O 5复合而成的复合氧化物膜,所以介电常数和绝缘性能显着提高。 例如,当将电介质膜用作电容器膜时,电容器膜呈现出一个品质因数,即介电常数和绝缘性的乘积,大约是二氧化硅(SiO 2)膜的两倍,其广泛用于 目前的目的