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    • 1. 发明授权
    • SOI substrate fabrication
    • SOI衬底制造
    • US5659192A
    • 1997-08-19
    • US791354
    • 1997-01-27
    • Kalluri R. SarmaMichael S. Liu
    • Kalluri R. SarmaMichael S. Liu
    • H01L21/20H01L21/762H01L27/01H01L27/12H01L29/04H01L31/0392
    • H01L21/76256H01L21/2007H01L21/76264H01L21/76275H01L21/76283H01L21/76289
    • A back-etch silicon-on-insulator SOI process that has a silicon handle wafer with an oxide layer bonded at room temperature to a silicon device wafer with an etch stop and silicon device layer. The surfaces that are bonded at room temperature are first conditioned to be hydrophilic. After bonding, the edges of the layers are sealed. The silicon device wafer, the etch-stop layer and the device layer are boron doped. Most of the silicon device wafer is ground away. Then, the remaining portion of the silicon device wafer and the etch stop layer are chemically etched away, thereby leaving a uniform layer of silicon device layer on the oxide layer of the silicon handle wafer. Because the bonding, grinding and selective etching are performed at room temperature, inter-diffusion of the boron between the various layers is prevented and thus permits the selective etching process to result in a nearly perfect silicon device layer in terms of an even-surfaced, defect-free and thin layer on the buried oxide layer of silicon handle wafer. The resulting SOI wafer is then annealed at a high temperature, prior to device processing.
    • 背面蚀刻绝缘体上硅SOI工艺,其具有硅处理晶片,其氧化物层在室温下与蚀刻停止和硅器件层结合到硅器件晶片。 首先将在室温下结合的表面调节为亲水性。 粘合后,层的边缘被密封。 硅器件晶片,蚀刻停止层和器件层是硼掺杂的。 大多数硅器件晶片被磨掉。 然后,硅器件晶片和蚀刻停止层的剩余部分被化学蚀刻掉,从而在硅处理晶片的氧化物层上留下均匀的硅器件层层。 由于在室温下进行接合,研磨和选择性蚀刻,因此可以防止各层之间的硼的相互扩散,从而允许选择性蚀刻工艺在均匀表面, 在硅处理晶圆的掩埋氧化层上的无缺陷和薄层。 然后在器件处理之前,将所得的SOI晶片在高温下退火。
    • 2. 发明授权
    • High resolution active matrix LCD cell design
    • 高分辨率有源矩阵LCD电池设计
    • US5536950A
    • 1996-07-16
    • US331315
    • 1994-10-28
    • Michael S. LiuKa-Lun LoKalluri R. Sarma
    • Michael S. LiuKa-Lun LoKalluri R. Sarma
    • G02F1/136G02F1/1368H01L21/336H01L21/77H01L21/84H01L27/12H01L29/786H01L33/00
    • H01L29/78615H01L27/1214
    • A transistor panel used for active matrix display devices includes islands of single crystal silicon formed on a transparent quartz substrate and arranged in rows and columns, with an NMOS transistor formed in each island. Each transistor includes source, drain and channel regions and an isolated pixel reference voltage region. A silicon body tie connects the channel region to the pixel reference voltage region and acts as a current sink for unwanted carriers thereby greatly increasing the snapback voltage. A metallization extends to each transistor and is in contact with each reference voltage region to form a body tie buss. The portion of the body tie that overlaps the pixel electrode may be sized to provide a storage capacitor for improved display performance. The unique body tie design obviates the need for a separate light shield layer, provides a dramatically increased aperture ratio and is compatible with normal high temperature silicon processes.
    • 用于有源矩阵显示装置的晶体管面板包括形成在透明石英衬底上的单晶硅岛,并以行和列排列,每个岛形成NMOS晶体管。 每个晶体管包括源极,漏极和沟道区域以及孤立的像素参考电压区域。 硅体接头将通道区域连接到像素参考电压区域,并且用作不需要的载流子的电流吸收器,从而大大增加了回跳电压。 金属化延伸到每个晶体管并且与每个参考电压区域接触以形成主体连接总线。 与像素电极重叠的身体束带的部分可以被设计成提供用于改善显示性能的存储电容器。 独特的身体搭配设计避免了单独的遮光层的需要,提供了显着增加的开口率,并且与普通的高温硅工艺兼容。
    • 4. 发明授权
    • SOI substrate fabrication
    • SOI衬底制造
    • US5344524A
    • 1994-09-06
    • US85422
    • 1993-06-30
    • Kalluri R. SharmaMichael S. Liu
    • Kalluri R. SharmaMichael S. Liu
    • H01L27/12H01L21/02H01L21/20H01L21/3065H01L21/762H01L21/306
    • H01L21/76264H01L21/2007H01L21/3065H01L21/76256H01L21/76275H01L21/76283H01L21/76289Y10S148/012Y10S438/97
    • A back-etch silicon-on-insulator SOI process that has a silicon handle wafer with an oxide layer bonded at room temperature to a silicon device wafer with an etch stop and silicon device layer. The surfaces that are bonded at room temperature are first conditioned to be hydrophilic. After bonding, the edges of the layers are sealed. The silicon device wafer, the etch-stop layer and the device layer are boron doped. Most of the silicon device wafer is ground away. Then, the remaining portion of the silicon device wafer and the etch stop layer are chemically etched away, thereby leaving a uniform layer of silicon device layer on the oxide layer of the silicon handle wafer. Because the bonding, grinding and selective etching are performed at room temperature, inter-diffusion of the boron between the various layers is prevented and thus permits the selective etching process to result in a nearly perfect silicon device layer in terms of an even-surfaced, defect-free and thin layer on the buried oxide layer of silicon handle wafer. The resulting SOI wafer is then annealed at a high temperature, prior to device processing.
    • 背面蚀刻绝缘体上硅SOI工艺,其具有硅处理晶片,其氧化物层在室温下与蚀刻停止和硅器件层结合到硅器件晶片。 首先将在室温下结合的表面调节为亲水性。 粘合后,层的边缘被密封。 硅器件晶片,蚀刻停止层和器件层是硼掺杂的。 大多数硅器件晶片被磨掉。 然后,硅器件晶片和蚀刻停止层的剩余部分被化学蚀刻掉,从而在硅处理晶片的氧化物层上留下均匀的硅器件层层。 由于在室温下进行接合,研磨和选择性蚀刻,因此可以防止各层之间的硼的相互扩散,从而允许选择性蚀刻工艺在均匀表面, 在硅处理晶圆的掩埋氧化层上的无缺陷和薄层。 然后在器件处理之前,将所得的SOI晶片在高温下退火。