Circuit board having an interstitial inner via hole structure
    212.
    发明授权
    Circuit board having an interstitial inner via hole structure 失效
    具有间隙内通孔结构的电路板

    公开(公告)号:US06734375B2

    公开(公告)日:2004-05-11

    申请号:US09956205

    申请日:2001-09-18

    Abstract: A circuit board including a desired number of electrically insulating layers and wiring layers laminated alternately, and an inner via hole for securing an electrical connection between the wiring layers by compressing and hardening a conductive paste including a conductive particle and a resin. In the electrically insulating layer, a porous sheet is provided a resin sheet at least one surface, and the porous sheet is not impregnated with a resin at least at a central portion. A through hole penetrating the electrically insulating layer in the direction of the thickness of the electrically insulating layer is filled with a conductive paste including a conductive particle and a resin, and pores that are present inside the porous sheet are filled with laminated resin. The average hole diameter of the pores inside the porous sheet may be smaller than the average particle size of the conductive particle. Thereby, it is possible to make the insulating layer of the circuit board securing the interlayer electrically connection by an inner via hole including a conductive paste to be homogenized and ultra-thin and improve the reliability of the connection of the inner via hole.

    Abstract translation: 包括所需数量的电绝缘层和交替层叠的布线层的电路板,以及用于通过压缩和硬化包括导电颗粒和树脂的导电膏来固定布线层之间的电连接的内通孔。 在电绝缘层中,多孔片材至少在一个表面上设置有树脂片,多孔片材至少在中心部分不浸渍树脂。 在电绝缘层的厚度方向贯通电绝缘层的贯通孔填充有包含导电性粒子和树脂的导电性糊剂,并且在多孔质片材内存在的孔填充有层叠树脂。 多孔片内的孔的平均孔径可以小于导电性粒子的平均粒径。 由此,可以使电路基板的绝缘层通过包含导电性糊剂的内部通路孔进行层间电连接,使其均匀化,超薄化,提高内部通孔连接的可靠性。

    Glass fiber nonwoven fabric and printed wiring board
    213.
    发明授权
    Glass fiber nonwoven fabric and printed wiring board 有权
    玻璃纤维无纺布和印刷线路板

    公开(公告)号:US06615616B2

    公开(公告)日:2003-09-09

    申请号:US10361701

    申请日:2003-02-11

    Abstract: A nonwoven fabric is constructed of a highly flat glass fiber which is a glass fiber whose section is flat and has a flatness ratio of 2.0 to 10 and which has such a section that the packing fraction is at least 85%, preferably at least 90%. In this nonwoven fabric, the glass fiber section has a shape near rectangle, and hence, the glass fibers can be arranged very densely to form a thin nonwoven fabric having a high bulk density, and when it is used as a laminate material, the glass fiber content can be increased and the surface smoothness can simultaneously be enhanced and can be used appropriately as a reinforcing material for a printed wiring board. Moreover, the above flat glass fiber can be produced by use of, for example, a nozzle having such a shape that one side of the major axis walls of a nozzle chip having a flat nozzle hole is partly notched.

    Abstract translation: 非织造布由高度扁平的玻璃纤维构成,该玻璃纤维的截面为平坦的玻璃纤维,平坦度为2.0〜10,填充率为85%以上,优选为90%以上, 。 在该非织造布中,玻璃纤维部分的形状接近矩形,因此玻璃纤维可以非常密集地布置以形成具有高堆积密度的薄无纺布,并且当其用作层压材料时,玻璃纤维 可以提高纤维含量,同时可以提高表面平滑性,并且可以适当地用作印刷线路板的增强材料。 此外,上述平板玻璃纤维可以通过使用例如具有扁平喷嘴孔的喷嘴片的长轴壁的一侧部分凹口的形状的喷嘴来制造。

    GLASS FIBER NONWOVEN FABRIC AND PRINTED WIRING BOARD
    214.
    发明申请
    GLASS FIBER NONWOVEN FABRIC AND PRINTED WIRING BOARD 有权
    玻璃纤维非织造布和印刷线路板

    公开(公告)号:US20030131632A1

    公开(公告)日:2003-07-17

    申请号:US10361701

    申请日:2003-02-11

    Abstract: A nonwoven fabric is constructed of a highly flat glass fiber which is a glass fiber whose section is flat and has a flatness ratio of 2.0 to 10 and which has such a section that the packing fraction is at least 85%, preferably at least 90%. In this nonwoven fabric, the glass fiber section has a shape near rectangle, and hence, the glass fibers can be arranged very densely to form a thin nonwoven fabric having a high bulk density, and when it is used as a laminate material, the glass fiber content can be increased and the surface smoothness can simultaneously be enhanced and can be used appropriately as a reinforcing material for a printed wiring board. Moreover, the above flat glass fiber can be produced by use of, for example, a nozzle having such a shape that one side of the major axis walls of a nozzle chip having a flat nozzle hole is partly notched.

    Abstract translation: 非织造布由高度扁平的玻璃纤维构成,该玻璃纤维的截面为平坦的玻璃纤维,平坦度为2.0〜10,填充率为85%以上,优选为90%以上的部分, 。 在该非织造布中,玻璃纤维部分的形状接近矩形,因此玻璃纤维可以非常密集地布置以形成具有高堆积密度的薄无纺布,并且当其用作层压材料时,玻璃纤维 可以提高纤维含量,同时可以提高表面平滑性,并且可以适当地用作印刷线路板的增强材料。 此外,上述平板玻璃纤维可以通过使用例如具有扁平喷嘴孔的喷嘴片的长轴壁的一侧部分凹口的形状的喷嘴来制造。

    Base webs for printed circuit board production using the foam process and acrylic fibers
    218.
    发明授权
    Base webs for printed circuit board production using the foam process and acrylic fibers 失效
    用于使用泡沫工艺和丙烯酸纤维的印刷电路板生产的底座

    公开(公告)号:US06368698B1

    公开(公告)日:2002-04-09

    申请号:US09573977

    申请日:2000-05-19

    Abstract: A printed circuit board is made from at least one non-woven sheet or web layer comprising at least 50% by weight acrylic fibers, with any balance substantially electrically non-conductive fibers, filler, and binder. The sheet or web is preferably made by the foam process, and may contain 60-80% straight polyacrylonitrile fibers and 40-20% fibrillated (pulp) ones. The web or sheet is preferably compressed by thermal calendering so that it has a density of about 0.1-1 grams per cubic centimeter; and the web or sheet may have a basis weight of between about 20-120 grams per square meter. The web or sheet may also have a 1-40% of substantially electrically non-conductive organic or inorganic binder, or may be substantially binder free. A printed circuit board made using the layers of these non-woven webs or sheets is otherwise conventional, including a pre-preg material, electrically conductive circuit elements, and electronics, and has improved properties compared to woven glass and non-woven aramid products, including improved fiber consolidation, easy board construction, and improved MD/CD ratio and stability.

    Abstract translation: 印刷电路板由至少一种包含至少50重量%的丙烯酸纤维的无纺布片材或纤维网层制成,任何平衡物基本上不导电的纤维,填料和粘合剂。 片材或纤维网优选通过泡沫方法制成,并且可以含有60-80%的直链聚丙烯腈纤维和40-20%的原纤化(纸浆)纤维。 纤维网或片材优选通过热压延来压缩,使其具有约0.1-1克/立方厘米的密度; 并且网或片可以具有介于约20-120克/平方米之间的基重。 幅材或片材还可以具有1-40%的基本上不导电的有机或无机粘合剂,或者可以是基本上不含粘合剂的。 使用这些非织造网或片的层制成的印刷电路板是常规的,包括预浸材料,导电电路元件和电子元件,并且与机织玻璃和非织造芳族聚酰胺产品相比具有改进的性能, 包括改进的纤维固结,易于板的构建,以及改善的MD / CD比和稳定性。

    Methods of fabricating cross-linked biobased materials and structures fabricated therewith
    219.
    发明授权
    Methods of fabricating cross-linked biobased materials and structures fabricated therewith 失效
    制造交联的生物基材料和用其制造的结构的方法

    公开(公告)号:US06339116B1

    公开(公告)日:2002-01-15

    申请号:US08770212

    申请日:1996-12-19

    Abstract: Biobased cross-linked compositions, methods of fabrication and structures, in particular biobased printed wiring boards using the compositions and methods of making the structures are described. Biobased materials such as lignin, crop oils, wood resins, tannins, and polysaccharides and combinations thereof are cross-linked, preferably using heat, a cross-linking agent, and an initiator. The materials fabricated have suitable properties for printed wiring boards which are made by impregnating a fiberglass or biobased cloth with an admixture of the biobased material, cross-linking agent and initiator which is processed by conventional methods to produce a printed wiring board.

    Abstract translation: 描述了生物基交联组合物,制造方法和结构,特别是使用组合物的生物基印刷线路板和制造结构的方法。 生物基材料如木质素,作物油,木材树脂,单宁和多糖及其组合是优选使用热交联剂和引发剂交联的。 制造的材料具有适用于印刷线路板的性能,其通过用生物基材料,交联剂和引发剂的混合物浸渍玻璃纤维或生物基布而制成,其通过常规方法加工以生产印刷线路板。

    Heat-resistant fiber paper
    220.
    发明授权
    Heat-resistant fiber paper 失效
    耐热纤维纸

    公开(公告)号:US06319605B1

    公开(公告)日:2001-11-20

    申请号:US09147630

    申请日:1999-02-04

    Abstract: A heat resistant fiber sheet composed of staple fibers consisting of a heat resistant organic high molecular polymer and fibrids consisting of a heat resistant organic high molecular polymer as main components, having excellent heat resistance, dimensional stability to heat, interlaminar peeling strength, electric insulation resistance under a high humidity, etc., and also good resin impregnating property in spite of having a high bulk density, and especially suitable for a base substrates for an electric insulating material and a laminate for an electric circuit, is obtained by setting the amount of the staple fibers occupying in the total amount of the sheet as 40 to 97% by weight and the amount of the fibrids as 3 to 60% by weight and partially softening and/or melting the fibrids so as to act as a binder.

    Abstract translation: 由耐热有机高分子聚合物和由耐热有机高分子聚合物组成的纤维状物作为主要成分的短纤维组成的耐热纤维片材,耐热性,热稳定性,层间剥离强度,电绝缘电阻 在高湿度等下,并且尽管具有高的堆积密度,并且特别适合于用于电绝缘材料的基底和用于电路的层压板的树脂浸渍性能通过设定量 占片材总量的短纤维为40〜97重量%,纤条体的量为3〜60重量%,部分软化和/或熔融纤条体,以起粘合剂的作用。

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