Composition and process for filling vias
    134.
    发明公开
    Composition and process for filling vias 失效
    Zusammensetzung und Verfahren zumFüllenvonKontaktlöchern

    公开(公告)号:EP0820217A1

    公开(公告)日:1998-01-21

    申请号:EP97110015.1

    申请日:1997-06-19

    Abstract: Electrolytic and electroless processes which use a solid plug of polymer thick film composition to fill throughholes and composition therefor. The composition comprises a trimodal conductive mixture dispersed in an organic vehicle wherein the trimodal conductive mixture consists of particles of spherical silver, flake silver and silver-coated copper.

    Abstract translation: 使用聚合物厚膜组合物的固体塞填充通孔及其组成的电解和无电工艺。 组合物包含分散在有机载体中的三峰导电混合物,其中三峰导电混合物由球形银,薄片银和镀银铜的颗粒组成。

    MULTILAYERED PRINTED WIRING BOARD AND ITS MANUFACTURE
    135.
    发明公开
    MULTILAYERED PRINTED WIRING BOARD AND ITS MANUFACTURE 失效
    MEHRSCHICHTIGE LEITERPLATTE UND IHRE HERSTELLUNG

    公开(公告)号:EP0804061A1

    公开(公告)日:1997-10-29

    申请号:EP96907729.6

    申请日:1996-03-29

    Abstract: It is to provide a multilayer printed circuit board having excellent resolution, interlaminar insulation property and resistance to cool-heat shock without forming unevenness on the surface and lowering peel strength even if the thickness of the resin insulating layer is thin. The invention proposes a multilayer printed circuit board comprising an upper conductor circuit layer, a lower conductor circuit layer and a resin insulating layer electrically insulating both the conductor circuit layers, in which the resin insulating layer is a composite layer comprised of an insulating layer made from a heat-resistant resin hardly soluble in acid or oxidizing agent as a lower layer and an adhesive layer for electroless plating made from a heat-resistant resin as an upper layer, and if necessary, a resin is filled in a concave portion created between conductor circuits of the lower layer so as to render the surface into the same plane as the surface of the conductor circuit.

    Abstract translation: 提供一种具有优异的分辨率,层间绝缘性能和耐冷热冲击性的多层印刷电路板,而不会在表面上形成不均匀性,并且即使树脂绝缘层的厚度较薄,也降低剥离强度。 本发明提出了一种多层印刷电路板,包括上导体电路层,下导体电路层和电绝缘两个导体电路层的树脂绝缘层,其中树脂绝缘层是由绝缘层构成的复合层, 难以溶于作为下层的酸或氧化剂的耐热树脂和由耐热树脂作为上层制成的用于化学镀的粘合剂层,如果需要,树脂填充在导体 电路,以使表面进入与导体电路的表面相同的平面。

    A process for the electroless deposition of metal on a substrate
    137.
    发明公开
    A process for the electroless deposition of metal on a substrate 失效
    一种用于在基板上无电金属沉积方法

    公开(公告)号:EP0708581A2

    公开(公告)日:1996-04-24

    申请号:EP95307184.2

    申请日:1995-10-11

    Applicant: AT&T Corp.

    Abstract: A process for the metalization of substrates is disclosed. The metal either forms a coating over the entire substrate, or it is patternwise deposited on the substrate surface. Metal is patternwise formed on the substrate either by forming a pattern of resist material on the substrate and depositing the material in the interstices defined by the pattern or by forming a patterned resist layer over a metal layer and transferring the pattern into the substrate using conventional techniques. The patterned resist layer is formed on the substrate using conventional techniques. The substrate is treated with reagents that promote the electroless plating of metal on the substrate surface. If the resist material has been previously formed on the substrate surface, the substrate surface is then dried. The remaining resist is then removed from the substrate surface. The substrate surface is then exposed to an electroless plating bath to form nickel onto those portions of the substrate surface that were treated with the sensitizing and activating solutions. The substrate is then heated to at least 180°C. Additional layers of metal are formed on the substrate. After the additional layers are so formed, the substrate is again heated to a temperature of at least about 180°C after each layer is so formed.

    PICTURE DISPLAY DEVICE AND METHOD OF MANUFACTURING A PICTURE DISPLAY DEVICE
    138.
    发明公开
    PICTURE DISPLAY DEVICE AND METHOD OF MANUFACTURING A PICTURE DISPLAY DEVICE 失效
    图像显示装置和方法。

    公开(公告)号:EP0685099A1

    公开(公告)日:1995-12-06

    申请号:EP95902243.0

    申请日:1994-12-16

    Abstract: A picture display device comprises two supporting plates (1, 2) which enclose an electro-optical layer (5). One of the two supporting plates (1) is provided with a plurality of at least substantially transparent picture electrodes (74), while the other supporting plate (2) comprises at least one counter electrode (9). The picture electrodes (74) are connected to respective contact faces (12) by means of at least substantially transparent conductor tracks (11), on which contact faces a semiconductor driving device (13) is arranged. Outside the area of the electro-optical layer (5) at least the ends of the conductor tracks (11) are provided with a metallic top coating (17) which extends to the proximity of the associated contact face (12). To suppress resistance variations in the conductor tracks with respect to each other and from device to device, the metallic top coating (17) continues in the direction of the contact face (12) in a form (of, for example, a relatively narrow metal track (18)) which extends across the contact face (12) but covers only a part thereof. To manufacture such a picture display device by means of the method according to the invention, a deposition mask (25) is provided on the conductor tracks, which mask leaves clear a comb-shaped pattern (23) having teeth (24) which are narrower than the conductor tracks. At least one of the teeth (24) extends at the location of an end of the conductor track (11) and an associated contact face (12). While masking the deposition mask (25), metal is selectively deposited on the conductor track.

    Method of manufacturing a printed board fuse and a fuse produced by the method
    140.
    发明公开
    Method of manufacturing a printed board fuse and a fuse produced by the method 失效
    一种生产用于电路板的安全,然后方法制造备份。

    公开(公告)号:EP0626714A1

    公开(公告)日:1994-11-30

    申请号:EP94850094.7

    申请日:1994-05-27

    Inventor: Löf, Stefan

    Abstract: In order to reduce the costs of assembled printed circuit boards, a printed board fuse (1) has been developed, which functions with great reliability at low manufacturing costs. By coating a large area of a printed board with metal, for example, by plating, a well-defined thickness of a metal layer (9) may be achieved in which a fuse (3) has been separated. The well-defined thickness also allows well-defined geometry of the fuse cross-sectional area and fuse length to be achieved and therefore its resistance and interruption characteristics will also be very accurately defined. In case of a temperature rise, the metal layer (9) surrounding the fuse (3) will have a heat dissipating effect on the fuse, implying an essentially reduced risk of board fire.

    Abstract translation: 为了减少组装的印刷电路板的成本,一个印刷电路板的保险丝(1)已经被开发,其与在低的制造成本很高的可靠性的功能。 通过涂敷的印刷电路板的大面积与金属,例如,通过电镀,明确定义的金属层(9)的厚度可以实现,其中一个保险丝(3)已被分离。 该明确定义的厚度,从而允许熔断器横截面积和熔丝长度的良好限定的几何形状来实现,因此,其电阻和中断特性,以便将定义非常精确地设定。 在温度上升的情况下,围绕所述保险丝(3)的金属层(9)将具有在熔丝散热效果,在本质上减少了板火灾风险暗示。

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