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    • 5. 发明授权
    • Planar split-gate high-performance MOSFET structure and manufacturing method
    • 平面分闸高性能MOSFET结构及制造方法
    • US08053298B2
    • 2011-11-08
    • US12381813
    • 2009-03-16
    • Anup BhallaFrancois HebertDaniel S. Ng
    • Anup BhallaFrancois HebertDaniel S. Ng
    • H01L21/337
    • H01L29/7802H01L21/26586H01L29/0847H01L29/0878H01L29/1095H01L29/402H01L29/41741H01L29/41766H01L29/42372H01L29/42376H01L29/66712H01L29/7828
    • This invention discloses an improved semiconductor power device includes a plurality of power transistor cells wherein each cell further includes a planar gate padded by a gate oxide layer disposed on top of a drift layer constituting an upper layer of a semiconductor substrate wherein the planar gate further constituting a split gate including a gap opened in a gate layer whereby the a total surface area of the gate is reduced. The transistor cell further includes a JFET (junction field effect transistor) diffusion region disposed in the drift layer below the gap of the gate layer wherein the JFET diffusion region having a higher dopant concentration than the drift region for reducing a channel resistance of the semiconductor power device. The transistor cell further includes a shallow surface doped regions disposed near a top surface of the drift layer under the gate adjacent to the JFET diffusion region wherein the shallow surface doped region having a dopant concentration lower than the JFET diffusion region and higher than the drift layer.
    • 本发明公开了一种改进的半导体功率器件,包括多个功率晶体管单元,其中每个单元还包括由设置在构成半导体衬底的上层的漂移层的顶部上的栅极氧化物层填充的平面栅极,其中平面栅极进一步构成 分闸门,其包括在栅极层中开口的间隙,由此栅极的总表面积减小。 晶体管单元还包括设置在栅极层间隙之下的漂移层中的JFET(结场效应晶体管)扩散区,其中具有比漂移区更高的掺杂浓度的JFET扩散区用于降低半导体功率的沟道电阻 设备。 晶体管单元还包括在邻近JFET扩散区的栅极附近设置在漂移层的顶表面附近的浅表面掺杂区,其中掺杂浓度低于JFET扩散区并且高于漂移层的浅表面掺杂区 。
    • 7. 发明申请
    • Inverted-trench grounded-source FET structure with trenched source body short electrode
    • 反沟槽接地源FET结构,具有沟槽源体短路电极
    • US20080067584A1
    • 2008-03-20
    • US11522669
    • 2006-09-17
    • Sik K LuiFrancois HebertAnup Bhalla
    • Sik K LuiFrancois HebertAnup Bhalla
    • H01L29/78H01L21/336
    • H01L29/781H01L21/823487H01L27/088H01L29/66734H01L29/7806H01L29/7811H01L2924/0002H01L2924/00
    • This invention discloses bottom-source lateral diffusion MOS (BS-LDMOS) device. The device has a source region disposed laterally opposite a drain region near a top surface of a semiconductor substrate supporting a gate thereon between the source region and a drain region. The BS-LDMOS device further has a combined sinker-channel region disposed at a depth in the semiconductor substrate entirely below a body region disposed adjacent to the source region near the top surface wherein the combined sinker-channel region functioning as a buried source-body contact for electrically connecting the body region and the source region to a bottom of the substrate functioning as a source electrode. A drift region is disposed near the top surface under the gate and at a distance away from the source region and extending to and encompassing the drain region. The combined sinker-channel region extending below the drift region and the combined sinker-channel region that has a dopant-conductivity opposite to and compensating the drift region for reducing the source-drain capacitance.
    • 本发明公开了底源横向扩散MOS(BS-LDMOS)器件。 器件具有在半导体衬底的顶表面附近的漏区附近设置的源极区域,该半导体衬底在源极区域和漏极区域之间支撑栅极。 BS-LDMOS器件还具有一个组合的沉陷通道区域,该半导体衬底的深度完全位于靠近顶表面的源极区域附近设置的体区域之下,其中组合沉降通道区域用作掩埋源体 用于将主体区域和源区域电连接到用作源电极的衬底的底部。 漂移区域设置在栅极下方的顶表面附近并且远离源极区域并且延伸到并包围漏极区域。 在漂移区域下方延伸的组合沉降通道区域和具有与掺杂剂 - 导电性相反并补偿漂移区域以减少源极 - 漏极电容的组合沉降沟道区域。