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    • 3. 发明授权
    • Method and apparatus for hermeticity determination and leak detection in semiconductor packaging
    • 用于半导体封装中的气密性测定和泄漏检测的方法和装置
    • US06763702B2
    • 2004-07-20
    • US10325356
    • 2002-12-19
    • Allen ChienFrank S GeefayCheol Hyun HanQing Gan
    • Allen ChienFrank S GeefayCheol Hyun HanQing Gan
    • G01M316
    • G01M3/226
    • A method and apparatus for determining the hermeticity of a semiconductor package is disclosed. Gas is introduced into the semiconductor package during packaging. Vacuum suction is then applied to the package. If the package has any leaks, the gas within will escape. The package is next scanned using a spectrometer. If the spectrometer does not detect any gas within the package cavity, the package is not hermetically sealed. In an alternate embodiment, the device is packaged first, and then immersed in a pressurized liquid. If the package has a leak, the pressure on the liquid will force liquid into the package cavity. The cavity of a properly sealed package will remain empty and dry. The package is scanned using a spectrometer. If the spectrometer detects liquid within the package, the package is not hermetically sealed.
    • 公开了一种用于确定半导体封装的气密性的方法和装置。 在包装过程中将气体引入半导体封装。 然后将真空吸力施加到包装上。 如果包装有任何泄漏,内部的气体将会逸出。 然后使用光谱仪扫描包装。 如果光谱仪没有检测到封装腔内的任何气体,封装件不会被密封。 在替代实施例中,装置首先包装,然后浸入加压液体中。 如果包装有泄漏,液体上的压力将迫使液体进入包装腔。 正确密封的包装的空腔将保持空且干燥。 使用光谱仪扫描包装。 如果光谱仪检测到包装内的液体,则封装不是密封的。
    • 6. 发明授权
    • Sloped via contacts
    • 通过联系人倾斜
    • US06903012B2
    • 2005-06-07
    • US10826803
    • 2004-04-15
    • Frank S GeefayQing Gan
    • Frank S GeefayQing Gan
    • H01L21/768H01L23/48H01L21/44
    • H01L21/76898H01L23/481H01L2224/02372H01L2224/0401H01L2224/05548H01L2924/09701Y10S438/928
    • A sloped via contact is used to connect a contact on the front side of a wafer to a contact on the back side of the wafer. The walls of a small (less than 50-80 microns wide) via have typically been difficult to coat with metal. The present invention forms a small via with sloped walls, allowing easy access to the inside walls of the via for metal sputtering or plating. The small via can be formed using a dry etch process such as the well-known deep reactive ion etching (DRIE) process. Using any isotropic plasma etch process, the walls of the via are further etched from the wafer backside to create sloped walls in the via. The via is then coated with metal to make it conductive.
    • 使用倾斜的通孔触点将晶片正面上的触点连接到晶片背面的触点。 小(50-80微米宽)通孔的壁通常难以用金属涂覆。 本发明形成具有倾斜壁的小通孔,允许容易地进入用于金属溅射或电镀的通孔的内壁。 可以使用诸如公知的深反应离子蚀刻(DRIE)工艺的干蚀刻工艺来形成小通孔。 使用任何各向同性等离子体蚀刻工艺,从晶片背面进一步蚀刻通孔的壁,以在通孔中产生倾斜的壁。 然后用金属涂覆通孔以使其导电。