会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 42. 发明申请
    • Method of erasing a flash memory cell
    • 擦除闪存单元的方法
    • US20050185467A1
    • 2005-08-25
    • US11118858
    • 2005-04-29
    • Hee Lee
    • Hee Lee
    • H01L21/8247G11C16/14H01L27/115H01L29/788H01L29/792G11C16/04
    • G11C11/14G11C16/14G11C16/16
    • Methods are disclosed for erasing a flash memory cell including: (a) a semiconductor substrate, (b) a gate, (c) a source, (d) a drain, (e) a well, the gate including: (1) a tunnel oxide film, (2) a floating gate, (3) a dielectric film and (4) a control gate stacked on the semiconductor substrate. In one of the disclosed methods, a negative bias voltage is applied to the control gate, the source and drain are floated, a positive bias voltage is applied to the well to thereby create a positive bias voltage in the source and the drain, a ground voltage is applied to the well at a first time while maintaining the negative bias voltage a the control gate; and subsequently a ground voltage is applied to the control gate.
    • 公开了一种用于擦除闪存单元的方法,包括:(a)半导体衬底,(b)栅极,(c)源极,(d)漏极(e)阱,所述栅极包括:(1) 隧道氧化膜,(2)浮栅,(3)电介质膜和(4)堆叠在半导体衬底上的控制栅。 在所公开的方法之一中,将负偏置电压施加到控制栅极,源极和漏极浮置,向阱施加正偏置电压,从而在源极和漏极中产生正偏压,接地 第一时间向阱施加电压,同时将负偏置电压保持为控制栅极; 然后将接地电压施加到控制栅极。
    • 43. 发明申请
    • Flash memory cell and method of erasing the same
    • 闪存单元和擦除方法相同
    • US20050133853A1
    • 2005-06-23
    • US10881423
    • 2004-06-30
    • Hee Lee
    • Hee Lee
    • G11C16/02G11C11/34G11C16/16H01L21/8247H01L27/115H01L29/788H01L29/792
    • G11C16/16
    • Provided is related to a flash memory cell and method of erasing the same. A P-type well field-effective flash cell is comprised of a drain formed in a P-type semiconductor substrate, a channel region made of a triple N-well, a source of P-well formed in the triple N-well, a floating gate formed on the channel region, a tunnel oxide film formed under the floating gate, a control gate formed with a predetermined pattern on the overall structure including the floating gate, and a dielectric film formed under the control gate. When the flash cell is turned on at a predetermined threshold voltage to drop a P-well bias, an electric field between the floating gate and the semiconductor substrate weakens to inhibit electron injection that is caused by F-N tunneling effect and thereby an erased threshold voltage goes to a target voltage.
    • 提供了一种闪存单元及其擦除方法。 P型阱场有效闪存单元由在P型半导体衬底中形成的漏极,由三重N阱构成的沟道区,在三重N阱中形成的P阱的源, 形成在沟道区上的浮置栅极,形成在浮置栅极下方的隧道氧化物膜,在包括浮置栅极的整个结构上形成具有预定图案的控制栅极以及形成在控制栅极下的电介质膜。 当闪光单元在预定阈值电压下接通以降低P阱偏压时,浮置栅极和半导体衬底之间的电场减弱,以抑制由FN隧穿效应引起的电子注入,从而消除阈值电压 达到目标电压。