Process for forming device comprising metallized magnetic substrates
    1.
    发明授权
    Process for forming device comprising metallized magnetic substrates 有权
    用于形成包括金属化磁性基底的装置的方法

    公开(公告)号:US6153078A

    公开(公告)日:2000-11-28

    申请号:US369105

    申请日:1999-08-05

    摘要: The invention provides an improved process for fabricating devices containing metallized magnetic ceramic material, such as inductors, transformers, and magnetic substrates. In particular, the unique vias utilized in the process of the invention allow fabrication of devices from multiple unfired ferrite layers with only a single via-coating step, thereby avoiding the need numerous punching steps. Moreover, there is no need for expanding the dimensions of the vias and thus no need for internal metallization. The invention therefore provides for green tape-type fabrication of devices such as inductors, transformers, and magnetic substrates in a manner faster, less complex, and more reliable than current methods. The invention also relates to use of an improved conductive material in such a process, the conductive material containing silver/palladium particles, ferrite particles, a cellulose-based or other organic binder, and a solvent. After firing of the substrate onto which the ink has been coated, and plating of copper thereon by a copper pyrophosphate bath, the plated copper exhibits a pull strength greater than about 4 kpsi, advantageously greater than about 5 kpsi. Use of a copper pyrophosphate bath also allow uniform plating within long, narrow vias.

    摘要翻译: 本发明提供了一种用于制造包含金属化磁性陶瓷材料的器件的改进方法,例如电感器,变压器和磁性衬底。 特别地,在本发明的方法中使用的唯一的通孔允许仅通过单个通孔涂覆步骤从多个未烧制的铁氧体层制造器件,从而避免了需要大量的冲压步骤。 此外,不需要扩大通孔的尺寸,因此不需要内部金属化。 因此,本发明以比当前方法更快,更不复杂和更可靠的方式提供诸如电感器,变压器和磁性基板的器件的绿色带状制造。 本发明还涉及在这种方法中使用改进的导电材料,所述导电材料含有银/钯颗粒,铁氧体颗粒,纤维素基或其它有机粘合剂和溶剂。 在其上涂覆有油墨的基材烧制之后,并通过焦磷酸铜浴将铜镀覆在其上,镀铜显示出大于约4kpsi的拉伸强度,有利地大于约5kpsi。 使用焦磷酸铜浴还可以在长而窄的通孔内均匀镀覆。

    Flat panel display apparatus, and method of making same
    3.
    发明授权
    Flat panel display apparatus, and method of making same 失效
    平板显示装置及其制造方法

    公开(公告)号:US5498925A

    公开(公告)日:1996-03-12

    申请号:US446095

    申请日:1995-05-19

    摘要: The disclosed multi-pixel flat panel displays (e.g., flat panel field emission displays (FPFED) or liquid crystal displays (LCD)) includes spaced apart first and second electrodes, with a patterned solid material layer in contact with one of the electrodes, exemplarily between the two electrodes. The patterned layer (referred to as the "web") includes a multiplicity of apertures, with at least one (preferably three or more) aperture associated with a given pixel. In the aperture is disposed a quantity of a second material, exemplarily, a phosphor in the case of an FPFED, or a color filter material in the case of a LCD. The web can facilitate second material deposition by means of, e.g., screen printing, typically making possible formation of smaller phosphor or filter dots than was possible by prior art device. The web also can facilitate provision of spacer structure between the two electrodes, and can include getter or hygroscopic material.

    摘要翻译: 公开的多像素平板显示器(例如,平板荧光显示器(FPFED)或液晶显示器(LCD))包括间隔开的第一和第二电极,其中图案化固体材料层与一个电极接触,示例性地 在两个电极之间。 图案化层(称为“网”)包括多个孔,其具有与给定像素相关联的至少一个(优选三个或更多个)孔。 在FPE的情况下,在孔中设置有例如第二材料,例如荧光体,或者在LCD的情况下设置滤色器材料。 纸幅可以通过例如丝网印刷促进第二材料沉积,通常可能形成比现有技术装置可能的更小的磷光体或过滤点。 网也可以有助于在两个电极之间提供间隔结构,并且可以包括吸气剂或吸湿材料。

    Methods of producing microwave device
    4.
    发明授权
    Methods of producing microwave device 失效
    微波器件生产方法

    公开(公告)号:US5133129A

    公开(公告)日:1992-07-28

    申请号:US552368

    申请日:1990-07-16

    申请人: John Thomson, Jr.

    发明人: John Thomson, Jr.

    摘要: This invention concerns with microwave devices including resonant elements made from dielectric materials represented by the nominal formulas Ba.sub.2 Ti.sub.9 O.sub.20, BaTi.sub.4 O.sub.9, ZrTiO.sub.4 (Sn) and the like. The resonant element is produced conventionally by a process including numerous steps of mixing, drying, screening, calcining, ball milling, drying, screening or remilling and spray drying, forming and sintering. These steps may take 72 hours or more, prior to the forming step, and are labor and energy consuming. The improvement resides in the use of a reduced number of steps which include mixing precursor powders with addition of water and dispersants, spray drying or flocculating and drying the mixed formulation, forming and reactively sintering, so as to reduce the total processing time, prior to the forming step, to form about 8 to 24 hours. The sintering step is conducted in an oxygen-enriched atmosphere and may be followed by soaking and annealing to enhance the Q characteristics of the element. Resultant product characteristics, e.g. Q's, are superior or at least comparable to those of the conventionally produced product.

    摘要翻译: 本发明涉及包括由标称式Ba2Ti9O20,BaTi4O9,ZrTiO4(Sn)等表示的介电材料制成的谐振元件的微波器件。 共振元件通常通过包括混合,干燥,筛选,煅烧,球磨,干燥,筛选或后处理和喷雾干燥,成型和烧结的多个步骤的方法制备。 在成型步骤之前,这些步骤可能需要72小时或更长时间,并且是劳动和能量消耗。 改进在于使用减少数量的步骤,其包括将前体粉末与水和分散剂混合,喷雾干燥或絮凝和干燥混合制剂,形成和反应性烧结,以减少总处理时间 形成步骤,形成约8至24小时。 烧结步骤在富氧气氛中进行,然后进行浸泡和退火以提高元件的Q特性。 产生的产品特征,例如 Q值优于或至少与传统生产产品相当。

    Dielectric for microwave applications
    6.
    发明授权
    Dielectric for microwave applications 失效
    介质用于微波应用

    公开(公告)号:US4563661A

    公开(公告)日:1986-01-07

    申请号:US686240

    申请日:1984-12-26

    IPC分类号: H01P7/10 H01P1/30

    CPC分类号: H01P7/10

    摘要: Devices are described which incorporate dielectric material with unusually low (and sometimes negative) temperature coefficient of dielectric constant. Such materials make possible the fabrication of microwave devices which remain stable with changing temperature. This is particularly useful for stabilization of frequency in microwave sources. Stabilization results from the incorporation of small amounts of tin in ceramic material containing mostly Ba.sub.2 Ti.sub.9 O.sub.20.

    摘要翻译: 描述了包含具有非常低的(有时是负的)介电常数温度系数的电介质材料的器件。 这种材料使得可以制造在温度变化时保持稳定的微波装置。 这对于稳定微波源中的频率特别有用。 稳定化是由于在大部分为Ba2Ti9O20的陶瓷材料中掺入少量锡。

    Composition and processing procedure for making thermistors
    7.
    发明授权
    Composition and processing procedure for making thermistors 失效
    制造热敏电阻的组成和加工程序

    公开(公告)号:US4175060A

    公开(公告)日:1979-11-20

    申请号:US854813

    申请日:1977-11-25

    IPC分类号: H01C7/02 H01B1/08

    CPC分类号: H01C7/025

    摘要: A ceramic composition and processing procedure is described which is useful in electric and electronic devices such as thermistors. The ceramic composition, which may be described as a semiconducting barium titanate, exhibits a large positive temperature coefficient of resistance. Advantages are ease and convenience of fabrication with lower sintering temperature than conventional processing and use of an air atmosphere instead of nitrogen or oxygen atmospheres. This facilitates batch processing and permits convenient sintering in a continuous kiln.

    摘要翻译: 描述了一种在诸如热敏电阻之类的电气和电子设备中有用的陶瓷组合物和加工方法。 可以描述为半导体钛酸钡的陶瓷组合物表现出大的正温度系数电阻。 优点是比常规处理和使用空气气氛而不是氮气或氧气氛更低的烧结温度来制造的便利性和便利性。 这有利于批量处理,并允许在连续窑中方便地烧结。

    Spaced-gate emission device and method for making same
    8.
    发明授权
    Spaced-gate emission device and method for making same 失效
    间隔栅极发射装置及其制造方法

    公开(公告)号:US5504385A

    公开(公告)日:1996-04-02

    申请号:US299470

    申请日:1994-08-31

    摘要: In accordance with the invention, a field emission device is made by disposing emitter material on an insulating substrate, applying a sacrificial film to the emitter material and forming over the sacrificial layer a conductive gate layer having a random distribution of apertures therein. In the preferred process, the gate is formed by applying masking particles to the sacrificial film, applying a conductive film over the masking particles and the sacrificial film and then removing the masking particles to reveal a random distribution of apertures. The sacrificial film is then removed. The apertures then extend to the emitter material. In a preferred embodiment, the sacrificial film contains dielectric spacer particles which remain after the film is removed to separate the emitter from the gate. The result is a novel and economical field emission device having numerous randomly distributed emission apertures which can be used to make low cost flat panel displays.

    摘要翻译: 根据本发明,通过将发射极材料设置在绝缘衬底上,将牺牲膜施加到发射极材料并在牺牲层上形成具有其中孔径随机分布的导电栅极层而形成场致发射器件。 在优选的方法中,通过将掩模颗粒施加到牺牲膜,在掩模颗粒和牺牲膜上施加导电膜,然后去除掩模颗粒以显示孔的随机分布来形成栅极。 然后去除牺牲膜。 孔然后延伸到发射体材料。 在优选实施例中,牺牲膜包含介电间隔物颗粒,其在除去膜之后保留,以将发射极与栅极分离。 结果是一种新颖且经济的场致发射装置,其具有许多随机分布的发射孔,其可用于制造低成本的平板显示器。

    Stackable, passively-tunable, cost-reduced inductor
    10.
    发明授权
    Stackable, passively-tunable, cost-reduced inductor 失效
    可堆叠,被动调谐,成本降低的电感

    公开(公告)号:US5877666A

    公开(公告)日:1999-03-02

    申请号:US815618

    申请日:1997-03-12

    CPC分类号: H01F17/0006 H01F17/062

    摘要: An inductor (100) optimized for surface-mount vacuum-pickup automated circuit assembly eliminates the expense of an inductor housing. The inductor has a hollow rectangular ferrite core (101) and a winding defined by a stripline (102) deposited on the core surface. Winding ends are formed by conductive vias (103) in the core that open onto the core surface, where they connect and mount the inductor to a circuit board (150). A flat sheet (104) adhered to one face of the core provides a surface for vacuum pickup and for labeling of the inductor. The core of a passively tuneable inductor (200) defines multiple unconnected winding segments (102-103). Segment ends mount the inductor to the circuit board and connect the segments to circuit board striplines (254) that are laid out in a pattern to interconnect a number of the segments into a winding. The inductor is tuned by changing the stripline layout and thereby varying the number of interconnected segments. The core of an electromagnetic interference choke (300) defines two windings wound axially in parallel and radially in opposite directions. The core of a choke (500) that permits stacked mounting defines additional conductive vias (503) for connecting the windings of a second choke (300) mounted on the core to the circuit board. For electromagnetic isolation, the windings of the two chokes are oriented orthogonally to each other.

    摘要翻译: 为表面贴装真空拾取自动化电路组件而优化的电感器(100)消除了电感器外壳的费用。 电感器具有中空矩形铁氧体磁芯(101)和由沉积在磁芯表面上的带状线(102)限定的绕组。 卷绕端由芯体中的导电通路(103)形成,该通孔穿过芯体表面,其中它们将电感器连接并安装到电路板(150)上。 粘附在芯的一个表面上的平板(104)提供用于真空吸收和用于标记电感器的表面。 可调谐电感器(200)的核心限定多个未连接的绕组段(102-103)。 段末端将电感器安装到电路板上,并将这些段连接到以图案布置的电路板带状线(254),以将多个段互连成一个绕组。 通过改变带状线布局并因此改变互连段的数量来调整电感器。 电磁干扰扼流圈(300)的核心限定了沿相反方向平行并径向缠绕的两个绕组。 允许堆叠安装的扼流器(500)的核心定义了用于将安装在芯上的第二扼流器(300)的绕组连接到电路板的附加导电通孔(503)。 对于电磁隔离,两个扼流圈的绕组彼此正交定向。