Method of paste printing using stencil and masking layer
    2.
    发明授权
    Method of paste printing using stencil and masking layer 有权
    使用模板和掩模层的印刷方法

    公开(公告)号:US6047637A

    公开(公告)日:2000-04-11

    申请号:US335389

    申请日:1999-06-17

    IPC分类号: B41M1/12 H05K3/12 H05K3/34

    摘要: A method for depositing a solder paste or other conductive or non-conductive material on a contact pad or other designated region of a substrate. A layer of resist is applied over the boundary of a region in which a bump of a deposited material is to be formed. The resist layer is applied by a screen printing process in which the portion of the screen overlying the region is blocked so that no resist is deposited where the bump is to be formed. The screen is open in the areas surrounding the blocked portion, permitting resist to be deposited over any non-planar surfaces surrounding the intended bump location. This provides a substantially planar surface which may be used as a mask for direct paste deposition into the region where the bump is to be formed, or the planar surface may be used as a flat surface upon which a stencil may be supported. After formation of the bump of conductive or non-conductive paste, the sacrificial resist layer is removed.

    摘要翻译: 一种用于在焊盘或衬底的其他指定区域上沉积焊膏或其它导电或非导电材料的方法。 将抗蚀剂层施加在要形成沉积材料的凸块的区域的边界上。 通过丝网印刷工艺施加抗蚀剂层,其中覆盖该区域的屏幕的部分被阻挡,使得在要形成凸块的地方不会沉积抗蚀剂。 屏幕在围绕封闭部分的区域是开放的,允许抗蚀剂沉积在围绕预定的凸起位置的任何非平面表面上。 这提供了一个基本平坦的表面,其可以用作用于将直接浆料沉积到要形成凸块的区域中的掩模,或者平面表面可以用作可以支撑模板的平坦表面。 在形成导电或非导电浆料的凸起之后,去除牺牲抗蚀剂层。

    Stencil and method for depositing solder
    3.
    发明授权
    Stencil and method for depositing solder 失效
    模板和沉积焊料的方法

    公开(公告)号:US06592943B2

    公开(公告)日:2003-07-15

    申请号:US09757057

    申请日:2001-01-08

    IPC分类号: B05D132

    摘要: A method of depositing solder on a conductive region of a substrate comprising providing a substrate having a substrate aperture and a coefficient of thermal expansion. A polymeric stencil is also provided such as to have a stencil aperture and a coefficient of thermal expansion which is approximately equal to the coefficient of thermal expansion of the substrate. The method also includes disposing the polymeric stencil on the substrate such that the stencil aperture is aligned with a conductive region; and reflowing the solder paste while the polymeric stencil remains disposed on the substrate. The polymeric stencil is then removed from the substrate essentially without any solder-paste being removed with the polymeric stencil. A method of forming a polymeric stencil for solder-paste printing comprising forming in a polymeric sheet of plurality of apertures having wrinkles in the polymeric sheet in proximity to the plurality of apertures, and compressing opposing surfaces of the apertured polymeric sheet toward each other. The compressed apertured polymeric sheet is then heated and rapidly cooled to remove wrinkles in proximity to the apertures. A stencil for use in a fine pitch bumping process comprising a releasable polymeric sheet having a coefficient of thermal expansion of less than about 4.0 ppm/°C. and a structure defining a pair of apertures spaced from each other at a distance less than about 0.20 mm.

    摘要翻译: 一种在衬底的导电区域上沉积焊料的方法,包括提供具有衬底孔径和热膨胀系数的衬底。 还提供聚合物模板,例如具有模板孔和热膨胀系数,其大致等于衬底的热膨胀系数。 该方法还包括将聚合物模版设置在基底上,使得模版孔与导电区对齐; 并且当聚合物模板保持设置在基底上时回流焊膏。 然后,聚合物模板基本上从基材上除去,而不用聚合物模板去除任何焊膏。 一种形成用于焊膏印刷的聚合物模板的方法,包括在聚合物片材中具有多个孔隙的多个孔的聚合物片材中形成,并且将多孔聚合物片材的相对表面压向彼此。 然后将压缩的有孔聚合物片材加热并快速冷却以除去孔附近的褶皱。 用于细间距凸起工艺的模版,其包括具有小于约4.0ppm /℃的热膨胀系数的可释放聚合物片材。 以及限定一对彼此以小于约0.20mm的距离彼此隔开的孔的结构。

    Modular drip pan and component mounting assembly for a dishwasher
    5.
    发明申请
    Modular drip pan and component mounting assembly for a dishwasher 审中-公开
    用于洗碗机的模块式滴水盘和部件安装组件

    公开(公告)号:US20080289664A1

    公开(公告)日:2008-11-27

    申请号:US12119878

    申请日:2008-05-13

    IPC分类号: B08B7/00 A47L15/42

    摘要: A dishwasher for receiving and cleansing soiled kitchenware includes a tub defining a washing chamber, a movable door for selectively exposing the washing chamber, and a modular, slidably mounted drip pan and component mounting assembly or base member positioned below the tub. One or more of a plurality of wash system components, including a wash pump, an inlet valve and a drain valve, is mounted to the modular base member. The modular base member includes connection points for household utilities, a peripheral lip or rim so as to contain any liquid that may fall from the dishwasher tub and a float and cut-off system that serves to terminate operation of the dishwasher upon detecting a water leak. In addition, the modular base member may also contain a system for heating washing fluid to a desired temperature, along with related control components.

    摘要翻译: 用于接收和清洁污染的厨具的洗碗机包括限定洗涤室的桶,用于选择性地暴露洗涤室的可移动门,以及定位在桶下方的模块化的,可滑动地安装的滴水盘和部件安装组件或基座构件。 多个洗涤系统组件中的一个或多个,包括洗涤泵,入口阀和排水阀,被安装到模块化底座部件上。 模块化底座部件包括用于家用电器的连接点,周缘唇缘或边缘,以便容纳可能从洗碗机桶中掉落的任何液体以及用于在检测到漏水时终止洗碗机操作的浮子和切断系统 。 此外,模块化底座部件还可以包含用于将洗涤流体加热到期望温度的系统以及相关的控制部件。