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    • 1. 发明申请
    • IMAGE SENSOR AND METHOD OF MANUFACTURING
    • 图像传感器及其制造方法
    • US20130181258A1
    • 2013-07-18
    • US13349221
    • 2012-01-12
    • Shiu-Ko JangJianKei-Wei CHENSzu-An WUYing-Lang WANG
    • Shiu-Ko JangJianKei-Wei CHENSzu-An WUYing-Lang WANG
    • H01L27/148H01L27/146
    • H01L27/14621H01L27/14623H01L27/1464
    • An image sensor includes a substrate having opposite first and second sides, a multilayer structure on the first side of the substrate, and a photo-sensitive element on the second side of the substrate. The photo-sensitive element is configured to receive light that is incident upon the first side and transmitted through the multilayer structure and the substrate. The multilayer structure includes first and second light transmitting layers. The first light transmitting layer is sandwiched between the substrate and the second light transmitting layer. The first light transmitting layer has a refractive index that is from 60% to 90% of a refractive index of the substrate. The second light transmitting layer has a refractive index that is lower than the refractive index of the first light transmitting layer and is from 40% to 70% of the refractive index of the substrate.
    • 图像传感器包括具有相对的第一和第二侧的基板,在基板的第一侧上的多层结构和在基板的第二侧上的感光元件。 光敏元件被配置为接收入射在第一侧并透过多层结构和基板的光。 该多层结构包括第一和第二透光层。 第一透光层夹在基板和第二透光层之间。 第一透光层的折射率为基板折射率的60%至90%。 第二透光层的折射率低于第一透光层的折射率,为基板的折射率的40%〜70%。
    • 7. 发明申请
    • Methods and Apparatus for an Improved Reflectivity Optical Grid for Image Sensors
    • 用于图像传感器的改进的反射光学网格的方法和装置
    • US20130193538A1
    • 2013-08-01
    • US13363280
    • 2012-01-31
    • Shiu-Ko JangJianKei-Wei ChenYing-Lang Wang
    • Shiu-Ko JangJianKei-Wei ChenYing-Lang Wang
    • H01L31/0232H01L31/18
    • H01L31/022441H01L27/14623H01L27/14629H01L27/1464H01L31/022433
    • An improved reflectivity optical grid for image sensors. In an embodiment, a backside illuminated CIS device includes a semiconductor substrate having a pixel array area comprising a plurality of photosensors formed on a front side surface of the semiconductor substrate, each of the photosensors forming a pixel in the pixel array area; an optical grid material disposed over a backside surface of the semiconductor substrate, the optical grid material patterned to form an optical grid that bounds each of the pixels in the pixel array area and extending above the semiconductor substrate, the optical grid having sidewalls and a top portion; and a highly reflective coating formed over the optical grid, comprising a pure metal coating of a metal that is at least 99% pure, and a high-k dielectric coating over the pure metal coating that has a refractive index of greater than about 2.0. Methods are also disclosed.
    • 用于图像传感器的改进的反射光栅。 在一个实施例中,背面照明的CIS器件包括具有像素阵列区域的半导体衬底,该像素阵列区域包括形成在半导体衬底的前侧表面上的多个光电传感器,每个光电传感器在像素阵列区域中形成像素; 设置在半导体衬底的背侧表面上的光栅格材料,所述光栅格材料被图案化以形成限定像素阵列区域中的每个像素并在半导体衬底上方延伸的光栅,所述光栅具有侧壁和顶部 一部分; 以及形成在光栅上的高反射涂层,包括纯金属的纯金属涂层,其纯度至少为99%,纯金属涂层上的高k电介质涂层具有大于约2.0的折射率。 还公开了方法。