发明名称 CMOS process to improve SRAM yield
摘要 An integrated circuit containing an SAR SRAM and CMOS logic, in which sidewall spacers on the gate extension of the SAR SRAM cell are thinner than sidewall spacers on the logic PMOS gates, so that the depth of the drain node SRAM PSD layer is maintained under the stretch contact. A process of forming an integrated circuit containing an SAR SRAM and CMOS logic, including selectively etch the sidewall spacers on the on the gate extension of the SAR SRAM cell, so that the depth of the drain node SRAM PSD layer is maintained under the stretch contact. A process of forming an integrated circuit containing an SAR SRAM and CMOS logic, including selectively implanting extra p-type dopants in the drain node SRAM PSD layer, so that the depth of the drain node SRAM PSD layer is maintained under the stretch contact.
申请公布号 US8603875(B2) 申请公布日期 2013.12.10
申请号 US201113284519 申请日期 2011.10.28
申请人 YU SHAOFENG;MCMULLAN RUSSELL CARLTON;LOH WAH KIT;TEXAS INSTRUMENTS INCORPORATED 发明人 YU SHAOFENG;MCMULLAN RUSSELL CARLTON;LOH WAH KIT
分类号 H01L21/8238 主分类号 H01L21/8238
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