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    • 32. 发明申请
    • RECESSED GATE FOR A CMOS IMAGE SENSOR
    • CMOS图像传感器的接收门
    • US20070184614A1
    • 2007-08-09
    • US11735223
    • 2007-04-13
    • James AdkissonJohn Ellis-MonaghanMark JaffeJerome Lasky
    • James AdkissonJohn Ellis-MonaghanMark JaffeJerome Lasky
    • H01L21/336
    • H01L27/14603H01L27/14601H01L27/14689H01L29/66621
    • A novel CMOS image sensor cell structure and method of manufacture. The imaging sensor comprises a substrate having an upper surface, a gate comprising a dielectric layer formed on the substrate and a gate conductor formed on the gate dielectric layer, a collection well layer of a first conductivity type formed below a surface of the substrate adjacent a first side of the gate conductor, a pinning layer of a second conductivity type formed atop the collection well at the substrate surface, and a diffusion region of a first conductivity type formed adjacent a second side of the gate conductor, the gate conductor forming a channel region between the collection well layer and the diffusion region. A portion of the bottom of the gate conductor is recessed below the surface of the substrate. Preferably, a portion of the gate conductor is recessed at or below a bottom surface of the pinning layer to a depth such that the collection well intersects the channel region thereby eliminating any potential barrier interference caused by the pinning layer.
    • 一种新颖的CMOS图像传感器单元结构及其制造方法。 成像传感器包括具有上表面的基板,包括形成在基板上的电介质层的栅极和形成在栅极电介质层上的栅极导体,形成在基板表面附近的第一导电类型的集合阱层 栅极导体的第一侧,形成在基板表面上的集电阱顶部的第二导电类型的钉扎层,以及邻近栅极导体的第二侧形成的第一导电类型的扩散区域,栅极导体形成沟道 收集阱层和扩散区域之间的区域。 栅极导体的底部的一部分在衬底的表面下方凹进。 优选地,栅极导体的一部分在钉扎层的底表面处或下方凹陷到深度,使得收集阱与沟道区相交,从而消除由钉扎层引起的任何潜在的屏障干扰。
    • 35. 发明申请
    • PIXEL SENSOR HAVING DOPED ISOLATION STRUCTURE SIDEWALL
    • 具有分离隔离结构的PIXEL传感器
    • US20070087463A1
    • 2007-04-19
    • US11563531
    • 2006-11-27
    • James AdkissonMark JaffeRobert Leidy
    • James AdkissonMark JaffeRobert Leidy
    • H01L21/00
    • H01L27/14603H01L27/1463H01L27/14643H01L27/14683
    • A novel pixel sensor structure formed on a substrate of a first conductivity type includes a photosensitive device of a second conductivity type and a surface pinning layer of the first conductivity type. A trench isolation structure is formed adjacent to the photosensitive device pinning layer. The trench isolation structure includes a dopant region comprising material of the first conductivity type selectively formed along a sidewall of the isolation structure that is adapted to electrically couple the surface pinning layer to the underlying substrate. The corresponding method for forming the dopant region selectively formed along the sidewall of the isolation structure comprises an out-diffiusion process whereby dopant materials present in a doped material layer formed along selected portions in the trench are driven into the underlying substrate during an anneal. Alternately, or in conjunction, an angled ion implantation of dopant material in the isolation structure sidewall may be performed by first fabricating a photoresist layer and reducing its size by removing a comer, or a comer portion thereof, which may block the angled implant material.
    • 形成在第一导电类型的衬底上的新型像素传感器结构包括第二导电类型的光敏器件和第一导电类型的表面钉扎层。 在光敏器件钉扎层附近形成沟槽隔离结构。 沟槽隔离结构包括掺杂区域,该掺杂剂区域包括沿着隔离结构的侧壁选择性地形成的第一导电类型的材料,其适于将表面钉扎层电耦合到下面的衬底。 用于形成沿着隔离结构的侧壁选择性地形成的掺杂剂区域的相应方法包括外扩散过程,由此在退火期间,存在于沿着沟槽中的选定部分形成的掺杂材料层中的掺杂剂材料被驱动到下面的衬底中。 可替代地或结合地,隔离结构侧壁中的掺杂剂材料的成角度的离子注入可以通过首先制造光致抗蚀剂层并通过去除可能阻挡成角度的植入材料的角部或其拐角部分来减小其尺寸来执行。
    • 37. 发明申请
    • RECESSED GATE FOR AN IMAGE SENSOR
    • 图像传感器的门
    • US20060124976A1
    • 2006-06-15
    • US10905097
    • 2004-12-15
    • James AdkissonJohn Ellis-MonaghanMark JaffeJerome Lasky
    • James AdkissonJohn Ellis-MonaghanMark JaffeJerome Lasky
    • H01L31/113H01L29/76H01L29/94
    • H01L27/14603H01L27/14601H01L27/14689H01L29/66621
    • A novel image sensor cell structure and method of manufacture. The imaging sensor comprises a substrate, a gate comprising a dielectric layer and gate conductor formed on the dielectric layer, a collection well layer of a first conductivity type formed below a surface of the substrate adjacent a first side of the gate conductor, a pinning layer of a second conductivity type formed atop the collection well at the substrate surface, and a diffusion region of a first conductivity type formed adjacent a second side of the gate conductor, the gate conductor forming a channel region between the collection well layer and the diffusion region. Part of the gate conductor bottom is recessed below the surface of the substrate. Preferably, a portion of the gate conductor is recessed at or below a bottom surface of the pinning layer to a depth such that the collection well intersects the channel region.
    • 一种新颖的图像传感器单元结构及其制造方法。 成像传感器包括基板,包括电介质层和形成在电介质层上的栅极导体的栅极,形成在与栅极导体的第一侧相邻的基板的表面下面的第一导电类型的收集阱层,钉扎层 在基板表面上形成在集合阱顶部的第二导电类型的第一导电类型的扩散区和在栅极导体的第二侧附近形成的第一导电类型的扩散区,栅极导体在集电阱层和扩散区之间形成沟道区 。 栅极导体底部的一部分凹陷在基板的表面下方。 优选地,栅极导体的一部分在钉扎层的底表面处或下方凹陷到使得收集阱与沟道区相交的深度。