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    • 61. 发明授权
    • Method for making via structure with metallic spacer
    • 用金属间隔物制作通孔结构的方法
    • US5712195A
    • 1998-01-27
    • US712573
    • 1996-09-12
    • Kuang-Yeh Chang
    • Kuang-Yeh Chang
    • H01L23/522H01L21/28
    • H01L23/5226H01L2924/0002
    • A conductive via structure establishes an electrical interconnection between two conductive layers in a semiconductor structure by connecting a first conductive layer on a semiconductor substrate to a second conductive layer by means of a conductive via structure extending through a non-conductive layer separating the two conductive layers. The non-conductive layer preferably includes a layer of spin-on-glass (SOG), and is provided with a via aperture therethrough. A conductive spacer, preferably of TiW, is fabricated within the via aperture in abutment with the walls of the via aperture. A second conductive layer is fabricated over the non-conductive layer, the conductive spacer, and within the via aperture, to establish the completed electrical interconnection. The via structure reduces out-gassing and chipping from the SOG layer, yet provides a low electrical resistance path between the two conductive layers.
    • 导电通孔结构通过将导电通孔结构延伸穿过分离两个导电层的非导电层,将半导体衬底中的第一导电层连接到第二导电层,从而在半导体结构中的两个导电层之间建立电互连 。 非导电层优选地包括旋涂玻璃(SOG)层,并且设置有穿过其中的通孔。 优选地由TiW制成的导电隔离件在通孔孔内与通孔的壁邻接地制成。 第二导电层制造在非导电层,导电间隔物和通孔孔内,以建立完整的电互连。 通孔结构减少了SOG层的泄漏和碎裂,但在两个导电层之间提供了低电阻路径。
    • 64. 发明授权
    • EEPROM cell with improved tunneling properties
    • 具有改善隧道性能的EEPROM单元
    • US5371393A
    • 1994-12-06
    • US221463
    • 1994-04-01
    • Kuang-Yeh ChangSubhash R. Nariani
    • Kuang-Yeh ChangSubhash R. Nariani
    • H01L21/8247H01L21/28H01L27/115H01L29/788H01L29/792H01L29/78
    • H01L21/28273Y10S438/981
    • The present invention is directed to a semiconductor memory device and a method for fabricating a semiconductor memory device, in particular a E.sup.2 PROM, having an improved tunnel area wherein electrons travel to and from a floating gate. The tunnel area is characterized by properties which lend to a relatively large number of programming and erasure cycles over the life of the E.sup.2 PROM. The tunnel area includes a tunneling gate which is fabricated via two implant stages. Because these two stages are separate from one another, each of the implant stages can be independently optimized to improve the properties of the tunnel area. Further, the windows used to define the implant regions are easily fabricated and are designed to facilitate formation of the implant regions. The method of defining the window lends to easy scaling of the process for advancing generations of technology.
    • 本发明涉及一种用于制造具有改进的隧道面积的半导体存储器件,特别是E2PROM的半导体存储器件和方法,其中电子行进到浮栅。 隧道区域的特点是在E2PROM的使用寿命期间可以实现相对较多的编程和擦除循环。 隧道区域包括通过两个植入阶段制造的隧道门。 因为这两个阶段是彼此分开的,因此可以独立地优化每个植入阶段以改善隧道区域的性质。 此外,用于限定植入区域的窗口容易制造并且被设计成有利于植入区域的形成。 定义窗口的方法有助于轻松扩展用于推进世代技术的过程。
    • 66. 发明授权
    • Double layer photoresist technique for side-wall profile control in
plasma etching processes
    • 用于等离子体蚀刻工艺中侧壁轮廓控制的双层光刻胶技术
    • US4645562A
    • 1987-02-24
    • US728012
    • 1985-04-29
    • Kuan Y. LiaoKuang-Yeh ChangHsing-Chien Ma
    • Kuan Y. LiaoKuang-Yeh ChangHsing-Chien Ma
    • H01L21/302H01L21/027H01L21/3065H01L21/311H01L21/3213B44C1/22B29C17/08C03C15/00C03C25/06
    • H01L21/32137H01L21/31116H01L21/31144H01L21/32136
    • A photolithographic process useful for VLSI fabrication is disclosed for achieving side-wall profile control of poly lines, metal lines, contact and via openings. Layers of a first and second photoresist materials are formed on the poly, metal or oxide-covered substrate. The top layer is patterned by conventional processes to define the final device geometry. The bottom layer is exposed and over-developed to form an overhang structure about the line pattern or the contact/via opening. During the subsequent anisotropic plasma-assisted etching step, some ions or particles are passed obliquely over the overhang and bombard the opening corner, the side-wall and the under-cut area. The plasma-assisted etching step not only forms the poly or metal lines, or the contact or via opening, but also results in an opening with rounded corners and a smoothly tapered side-wall profile. The subsequent metal film deposition step results in a uniform film thickness around the edges of the opening. The process thus alleviates the problem of high contact resistance previously encountered as a result of dry etching the contact or via openings.
    • 公开了一种用于VLSI制造的光刻工艺,用于实现多线,金属线,接触和通孔的侧壁轮廓控制。 第一和第二光致抗蚀剂材料的层在多金属或氧化物覆盖的基底上形成。 通过常规方法对顶层进行图案化以定义最终的装置几何形状。 底层暴露并过度显影以形成围绕线图案或接触/通孔开口的悬垂结构。 在随后的各向异性等离子体辅助蚀刻步骤中,一些离子或颗粒倾斜地穿过悬垂物并且轰击开口角,侧壁和下切区域。 等离子体辅助蚀刻步骤不仅形成多个或金属线,或接触或通孔,而且还形成具有圆角和平滑锥形侧壁轮廓的开口。 随后的金属膜沉积步骤导致围绕开口边缘的均匀的膜厚度。 因此,该方法减轻了由于干蚀刻接触或通孔的结果而先前遇到的高接触电阻的问题。
    • 70. 发明授权
    • Method of manufacturing CMOS sensor
    • 制造CMOS传感器的方法
    • US06303421B1
    • 2001-10-16
    • US09617565
    • 2000-07-17
    • Kuang-Yeh Chang
    • Kuang-Yeh Chang
    • H01L218238
    • H01L21/823814H01L27/14609H01L27/14689
    • A method for manufacturing a CMOS sensor comprises the steps of providing a substrate having a first conductive type, wherein the substrate comprises an isolation region, an active region, a gate structure on the active region and a source/drain region having a second conductive type in the substrate. A patterned photoresist is formed over the substrate. A first doped region having the second conductive type is formed across a portion of the source/drain region and extends from the surface of the substrate into the substrate. A second doped region having the first conductive type is formed to wrap the first doped region in the substrate. A third doped region having the second conductive type is formed under the second doped region. A fourth doped region having the first conductive type is formed under the third doped region. The patterned photoresist is removed.
    • 一种用于制造CMOS传感器的方法包括以下步骤:提供具有第一导电类型的衬底,其中衬底包括隔离区,有源区,有源区上的栅极结构和具有第二导电类型的源极/漏极区 在基材中。 在衬底上形成图案化的光致抗蚀剂。 具有第二导电类型的第一掺杂区跨越源/漏区的一部分形成并且从衬底的表面延伸到衬底中。 形成具有第一导电类型的第二掺杂区域以包裹衬底中的第一掺杂区域。 具有第二导电类型的第三掺杂区形成在第二掺杂区的下方。 具有第一导电类型的第四掺杂区形成在第三掺杂区下。 去除图案化的光致抗蚀剂。