Package substrate for electrolytic leadless plating and manufacturing method thereof
    41.
    发明授权
    Package substrate for electrolytic leadless plating and manufacturing method thereof 失效
    电解无铅电镀用封装基板及其制造方法

    公开(公告)号:US06872590B2

    公开(公告)日:2005-03-29

    申请号:US10626437

    申请日:2003-07-24

    Abstract: Disclosed is a package substrate for electrolytic leadless plating, characterized in that a wire bonding pad onto which a semiconductor chip is mounted is subjected to electrolytic leadless Au plating, and a solder ball pad is subjected to OSP metal finishing or electroless Au plating without use of plating lead lines, upon preparation thereof. A method of manufacturing the package substrate is also disclosed. The method includes Cu plating a whole surface of a base substrate having through-holes, developing a first dry film laminated onto the through-holes, removing a copper foil not covered with the first dry film, stripping the first dry film, exposing and developing a second dry film on the substrate so that only an upper portion to be subjected to electrolytic Au plating is exposed, grounding an electrolytic Au plating terminal to a solder ball pad, Ni—Au plating the wire bonding pad, removing the second dry film by a stripping solution, exposing and developing a third dry film, removing the exposed copper foil by an etching solution, removing the third dry film by a stripping solution, performing a series of processes of coating, exposing, developing and drying a solder resist, and subjecting the solder ball pad to OSP metal finishing.

    Abstract translation: 公开了一种用于电解无铅电镀的封装衬底,其特征在于,对其上安装有半导体芯片的引线焊盘进行电解无铅镀Au,并且焊球垫经受OSP金属整理或无电镀Au,而不使用 电镀引线在制备时。 还公开了一种制造封装衬底的方法。 该方法包括对具有通孔的基底基板的整个表面进行镀铜,形成层压在通孔上的第一干膜,除去未被第一干膜覆盖的铜箔,剥离第一干膜,曝光和显影 在基板上的第二干膜,使得只有待进行电解Au电镀的上部暴露,将电解Au电镀端子接地到焊球垫,Ni-Au电镀引线接合焊盘,通过以下步骤除去第二干膜 剥离溶液,曝光和显影第三干膜,通过蚀刻溶液除去暴露的铜箔,通过剥离溶液除去第三干膜,进行一系列涂布,曝光,显影和干燥阻焊剂的工艺,以及 对焊锡球进行OSP金属加工。

    LCD position determination apparatus for LCD projector
    43.
    发明授权
    LCD position determination apparatus for LCD projector 失效
    LCD投影机液晶显示位置确定装置

    公开(公告)号:US5975705A

    公开(公告)日:1999-11-02

    申请号:US969895

    申请日:1997-11-13

    Applicant: Jong-Jin Lee

    Inventor: Jong-Jin Lee

    CPC classification number: H04N9/317 G03B21/006 G03B21/142 G03B33/12 G03B43/00

    Abstract: An LCD position determination apparatus for an LCD projector which is capable of shortening an assembling time of a projector by facilitating or enabling alignment of the red (R), green (G) and blue (B) cells by detecting the positions of the R, G and B LCDs at the same time when installing the R, G and B LCDs at or along three surfaces of a prism. The apparatus includes the red LCD, green LCD and blue LCD optically aligned with three respective surfaces of the color mixing prism, a pair of two-way splitting mirrors aligned with a fourth surface of the prism, and an automatic collimator apparatus having an ocular lens by which an image of a predetermined corner portion of each of the LCDs transmitted via the two-way mirrors is viewed.

    Abstract translation: 一种用于LCD投影仪的LCD位置确定装置,其能够通过检测红色(R),绿色(G)和蓝色(B))单元的位置来简化或使得对准红色(R),绿色(G)和蓝色(B) G和B LCD,同时在棱镜的三个表面上或之后安装R,G和B LCD。 该装置包括与混色棱镜的三个相应表面光学对准的红色LCD,绿色LCD和蓝色LCD,与棱镜的第四表面对准的一对双向分离镜和具有眼镜片的自动准直仪 通过其观察通过双向反射镜传送的每个LCD的预定拐角部分的图像。

    Optical pick-up objective driving apparatus
    44.
    发明授权
    Optical pick-up objective driving apparatus 失效
    拾光物镜驱动装置

    公开(公告)号:US5191484A

    公开(公告)日:1993-03-02

    申请号:US828120

    申请日:1992-01-30

    CPC classification number: G11B7/0935

    Abstract: An optical pick-up objective lens driving apparatus comprises a rectangular moving member mounted for movement relative to an iron-core member in rectilinear focusing and tracking directions, respectively. The moving member carries focusing and tracking coils, and a lens. Magnetic pieces are disposed at respective corners of the moving member in opposing spacial relationship to magnetic plates of the iron core member to create a restoring force which biases the moving member to a pre-set position. The lens is mounted over a center of weight of the moving member.

    Abstract translation: 光学拾取物镜驱动装置包括分别安装成相对于铁芯件在直线聚焦和跟踪方向上移动的矩形移动部件。 移动构件携带聚焦跟踪线圈和透镜。 磁片以与铁芯构件的磁性板相对的空间关系设置在移动构件的各个角上,以产生将移动构件偏压到预定位置的恢复力。 透镜安装在移动部件的重心上。

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