Isolation with offset deep well implants
    85.
    发明授权
    Isolation with offset deep well implants 有权
    隔离与偏移深井植入物

    公开(公告)号:US08034699B2

    公开(公告)日:2011-10-11

    申请号:US12464206

    申请日:2009-05-12

    IPC分类号: H01L21/425

    摘要: A method implants impurities into well regions of transistors. The method prepares a first mask over a substrate and performs a first shallow well implant through the first mask to implant first-type impurities to a first depth of the substrate. The first mask is removed and a second mask is prepared over the substrate. The method performs a second shallow well implant through the second mask to implant second-type impurities to the first depth of the substrate and then removes the second mask. A third mask is prepared over the substrate. The third mask has openings smaller than openings in the first mask and the second mask. A first deep well implant is performed through the third mask to implant the first-type impurities to a second depth of the substrate, the second depth of the substrate being greater than the first depth of the substrate. The third mask is removed and a fourth mask is prepared over the substrate, the fourth mask has openings smaller than the openings in the first mask and the second mask. Then, a second deep well implant is performed through the fourth mask to implant the second-type impurities to the second depth of the substrate.

    摘要翻译: 一种方法是将杂质掺入晶体管的阱区。 该方法在衬底上制备第一掩模,并且通过第一掩模执行第一浅阱注入,以将第一类型杂质注入到衬底的第一深度。 去除第一个掩模,并在衬底上制备第二个掩模。 该方法通过第二掩模执行第二浅井注入,以将第二类型杂质植入衬底的第一深度,然后移除第二掩模。 在衬底上制备第三个掩模。 第三掩模具有比第一掩模和第二掩模中的开口小的开口。 通过第三掩模执行第一深孔注入,以将第一类型的杂质注入衬底的第二深度,衬底的第二深度大于衬底的第一深度。 去除第三掩模并在衬底上制备第四掩模,第四掩模具有小于第一掩模和第二掩模中的开口的开口。 然后,通过第四掩模进行第二深孔注入,以将第二类型的杂质植入到衬底的第二深度。

    Light shield for CMOS imager
    87.
    发明授权
    Light shield for CMOS imager 有权
    CMOS成像器的屏蔽

    公开(公告)号:US07633106B2

    公开(公告)日:2009-12-15

    申请号:US11164072

    申请日:2005-11-09

    IPC分类号: H01L31/00

    CPC分类号: H01L27/14623 H01L27/14685

    摘要: The present invention provides a light shield for shielding the floating diffusion of a complementary metal-oxide semiconductor (CMOS) imager. In accordance with an embodiment of the present invention, there is provided a pixel sensor cell including: a device region formed on a substrate; and a first layer of material forming a sidewall adjacent to a side of the device region for blocking electromagnetic radiation from the device region.

    摘要翻译: 本发明提供一种用于屏蔽互补金属氧化物半导体(CMOS)成像器的浮动扩散的遮光罩。 根据本发明的实施例,提供了一种像素传感器单元,包括:形成在基板上的器件区域; 以及形成与所述器件区域的一侧相邻的侧壁的第一材料层,用于阻挡来自所述器件区域的电磁辐射。

    Damascene copper wiring image sensor
    89.
    发明授权
    Damascene copper wiring image sensor 有权
    大马士革铜线接线图像传感器

    公开(公告)号:US07193289B2

    公开(公告)日:2007-03-20

    申请号:US10904807

    申请日:2004-11-30

    IPC分类号: H01L27/14

    摘要: An image sensor array and method of fabrication wherein the sensor includes Copper (Cu) metallization levels allowing for incorporation of a thinner interlevel dielectric stack with improved thickness uniformity to result in a pixel array exhibiting increased light sensitivity. In the sensor array, each Cu metallization level includes a Cu metal wire structure formed at locations between each array pixel and, a barrier material layer is formed on top each Cu metal wire structure that traverses the pixel optical path. By implementing a single mask or self-aligned mask methodology, a single etch is conducted to completely remove the interlevel dielectric and barrier layers that traverse the optical path. The etched opening is then refilled with dielectric material. Prior to depositing the refill dielectric, a layer of either reflective or absorptive material is formed along the sidewalls of the etched opening to improve sensitivity of the pixels by either reflecting light to the underlying photodiode or by eliminating light reflections.

    摘要翻译: 一种图像传感器阵列和制造方法,其中传感器包括铜(Cu)金属化水平,允许结合更薄的层间电介质叠层,改进的厚度均匀性,以产生呈现增加的光敏度的像素阵列。 在传感器阵列中,每个Cu金属化层包括在每个阵列像素之间的位置处形成的Cu金属线结构,并且阻挡材料层形成在穿过像素光路的每个Cu金属线结构上。 通过实现单掩模或自对准掩模方法,进行单次蚀刻以完全去除穿过光路的层间电介质层和阻挡层。 然后将蚀刻的开口用电介质材料重新填充。 在沉积再充填电介质之前,沿蚀刻开口的侧壁形成反射或吸收材料层,以通过将光反射到下面的光电二极管或通过消除光反射来提高像素的灵敏度。