Process to improve image sensor sensitivity
    9.
    发明申请
    Process to improve image sensor sensitivity 审中-公开
    提高图像传感器灵敏度的过程

    公开(公告)号:US20050001281A1

    公开(公告)日:2005-01-06

    申请号:US10858443

    申请日:2004-06-01

    摘要: A packaged image sensing device of improved sensitivity is formed by providing a mechanism for enhancing the focusing of embedded microlenses on the photosensitive elements of the image sensor. Normally, the bonding material interposed between the packaging layers and the microlenses defocuses the microlenses. In one embodiment of the present invention, the focus is restored by interposing an intermediate optically refractive layer between the bonding material and the lenses. In another embodiment, a bonding material with a lower index of refraction is used. In a final embodiment, the microlenses are formed in a material of a higher index of refraction.

    摘要翻译: 通过提供用于增强嵌入式微透镜在图像传感器的感光元件上的聚焦的机构来形成具有改进的灵敏度的封装图像感测装置。 通常,插入在包装层和微透镜之间的接合材料使微透镜散焦。 在本发明的一个实施例中,通过在接合材料和透镜之间插入中间光学折射层来恢复焦点。 在另一个实施例中,使用具有较低折射率的接合材料。 在最终实施例中,微透镜形成为具有较高折射率的材料。

    Polysilicon layer having improved roughness after POCl3 doping
    10.
    发明授权
    Polysilicon layer having improved roughness after POCl3 doping 有权
    POCl3掺杂后具有改善粗糙度的多晶硅层

    公开(公告)号:US06563154B1

    公开(公告)日:2003-05-13

    申请号:US09208915

    申请日:1998-12-10

    IPC分类号: H01L27108

    摘要: An improved method for depositing the polysilicon layer from which a gate pedestal is later formed is described. Deposition takes place in two stages. Initially, the conventional deposition temperature of about 630° C. is used. Then, when the intended thickness of polysilicon has been grown, the temperature is ramped down to about 560° C., without interrupting the deposition process, and growth of the film continues to completion. This is followed by a standard doping step using POCl3. Polysilicon films formed in this way have been found to have very smooth surfaces because the topmost layer is less subject to uncontrolled grain growth. As a consequence, dielectric layers obtained by oxidizing such films exhibit superior breakdown voltages.

    摘要翻译: 描述了一种用于沉积稍后形成栅极基座的多晶硅层的改进方法。 沉积分两个阶段进行。 首先,使用约630℃的常规沉积温度。 然后,当多晶硅的预期厚度已经生长时,温度降低到约560℃,而不中断沉积过程,并且膜的生长继续完成。 之后是使用POCl 3的标准掺杂步骤。 已经发现以这种方式形成的多晶硅膜具有非常光滑的表面,因为最顶层较少受到不受控制的晶粒生长。 因此,通过氧化这些膜获得的介电层表现出优异的击穿电压。