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    • 2. 发明授权
    • Method to dispense light blocking material for wafer level CSP
    • 分配晶圆级CSP的阻光材料的方法
    • US07510908B1
    • 2009-03-31
    • US11050267
    • 2005-02-01
    • Hau Thanh NguyenNikhil Kelkar
    • Hau Thanh NguyenNikhil Kelkar
    • H01L21/00
    • H01L21/56H01L23/3114H01L2924/0002H01L2924/00
    • Disclosed is a packaged semiconductor device. The device includes a die with an active surface having a plurality of electrical contacts, a back surface located opposite the active surface, and a plurality of side surfaces. The device also includes a first light blocking protective coating that covers at least a portion of the side surfaces of the die. Also, disclosed is a semiconductor wafer including an active surface and a back surface, the active surface having a multiplicity of electrical contacts. The wafer includes a plurality of channels formed in the active surface of the wafer, the channels being arranged in a grid that effectively divide the wafer into a plurality of dice, each die having a plurality of the electrical contacts; and a light blocking filler material that fills the channels. Further, disclosed is a stamp suitable for applying a light blocking filler material into grooves on a semiconductor wafer. The stamp includes a base plate; and a multiplicity of spaced apart fins arranged in a matrix of lines that define a grid sized to match the spacing of saw streets in an associated semiconductor wafer, each line of the matrix having a series of spaced apart fins. Next, disclosed is a wafer level method of packaging integrated circuits. The wafer level method includes cutting a matrix of channels in a semiconductor wafer; dispensing a light blocking filler material into the channels; and dicing the semiconductor wafer by cutting the wafer along the channels and through the light blocking filler material, wherein the dicing cuts are narrower than the channels such that some of the light blocking filler material covers at least portions of side walls of the dice that are singulated by the dicing operation.
    • 公开了一种封装的半导体器件。 该装置包括具有多个电触点的活动表面的模具,与该活动表面相对的后表面和多个侧表面。 该装置还包括覆盖模具的侧表面的至少一部分的第一遮光保护涂层。 此外,公开了包括有源表面和背面的半导体晶片,该有源表面具有多个电触点。 晶片包括形成在晶片的有源表面中的多个通道,通道布置成格栅,其有效地将晶片分成多个裸片,每个芯片具有多个电触点; 以及填充通道的遮光填充材料。 此外,公开了适用于将遮光填充材料施加到半导体晶片上的凹槽中的印模。 邮票包括底板; 以及多个间隔开的散热片,其布置成线的矩阵,其限定了尺寸以匹配相关联的半导体晶片中的锯道的间隔的格栅,矩阵的每一行具有一系列间隔开的散热片。 接下来,公开了封装集成电路的晶片级方法。 晶片级方法包括切割半导体晶片中的通道矩阵; 将光阻挡填料分配到通道中; 以及通过沿着通道切割晶片并通过遮光填充材料来切割半导体晶片,其中切割切口比通道窄,使得一些遮光填充材料覆盖骰子的侧壁的至少部分 由切割操作分割。