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    • 5. 发明授权
    • Method of manufacturing EEPROM cell
    • 制造EEPROM单元的方法
    • US07238572B2
    • 2007-07-03
    • US11096038
    • 2005-03-31
    • Hee-seog JeonSeung-beom YoonYong-tae Kim
    • Hee-seog JeonSeung-beom YoonYong-tae Kim
    • H01L21/336
    • H01L27/11521H01L21/28273H01L27/115H01L27/11524H01L29/42324H01L29/66825
    • A method of manufacturing an EEPROM cell includes growing a first oxide layer on a semiconductor substrate; forming a first conductive layer on the first oxide layer; forming a first conductive pattern and a tunneling oxide layer by patterning the first conductive layer and the first oxide layer, the tunneling oxide layer being disposed under the first conductive pattern; forming a gate oxide layer on sidewalls of the first conductive pattern and the substrate and forming a second conductive pattern on both sides of the first conductive pattern; forming a conductive layer for a floating gate by electrically connecting the first conductive pattern to the second conductive pattern; forming a coupling oxide layer on the conductive layer for the floating gate; forming a third conductive layer on the coupling oxide layer; and forming a select transistor and a control transistor by patterning the third conductive layer, the coupling oxide layer, and the conductive layer for the floating gate. The select transistor is spaced apart from the control transistor. The select transistor, which is formed on the tunneling oxide layer, includes a gate stack formed of a select gate, a first coupling oxide pattern, and a first floating gate, and the control transistor includes a gate stack formed of a control gate, a second coupling oxide pattern, and a second floating gate.
    • 制造EEPROM单元的方法包括在半导体衬底上生长第一氧化物层; 在所述第一氧化物层上形成第一导电层; 通过图案化所述第一导电层和所述第一氧化物层来形成第一导电图案和隧道氧化物层,所述隧穿氧化物层设置在所述第一导电图案下方; 在所述第一导电图案和所述基板的侧壁上形成栅氧化层,并在所述第一导电图案的两侧上形成第二导电图案; 通过将所述第一导电图案电连接到所述第二导电图案来形成用于浮置栅极的导电层; 在浮栅的导电层上形成耦合氧化物层; 在所述耦合氧化物层上形成第三导电层; 以及通过图案化第三导电层,耦合氧化物层和浮栅的导电层来形成选择晶体管和控制晶体管。 选择晶体管与控制晶体管间隔开。 形成在隧道氧化物层上的选择晶体管包括由选择栅极,第一耦合氧化物图案和第一浮置栅极形成的栅极堆叠,并且控制晶体管包括由控制栅极形成的栅极堆叠, 第二耦合氧化物图案和第二浮栅。
    • 7. 发明授权
    • Method of manufacturing a thin dielectric layer using a heat treatment and a semiconductor device formed using the method
    • 使用热处理制造薄介电层的方法和使用该方法形成的半导体器件
    • US07190024B2
    • 2007-03-13
    • US11329217
    • 2006-01-10
    • Sung-Taeg KangJeong-Uk HanSung-Woo ParkSeung-Beom YoonJi-Hoon ParkBo-Young Seo
    • Sung-Taeg KangJeong-Uk HanSung-Woo ParkSeung-Beom YoonJi-Hoon ParkBo-Young Seo
    • H01L29/788
    • H01L21/28273H01L21/0214H01L21/3144H01L29/513H01L29/7881
    • In a method for forming a semiconductor device and a semiconductor device formed in accordance with the method, a thin dielectric layer is provided between a lower conductive layer and an upper conductive layer. In one embodiment, the thin dielectric layer comprises an inter-gate dielectric layer, the lower conductive layer comprises a floating gate and the upper dielectric layer comprises a control gate of a transistor, for example, a non-volatile memory cell transistor. The thin dielectric layer is formed using a heat treating process that results in reduction of surface roughness of the underlying floating gate, and results in a thin silicon oxy-nitride layer being formed on the floating gate. In this manner, the thin dielectric layer provides for increased capacitive coupling between the lower floating gate and the upper control gate. This also leads to a lowered programming voltage, erasing voltage and read voltage for the transistor, while maintaining the threshold voltage in a desired range. In addition, the size of the transistor and resulting storage cell can be minimized and the need for a high-voltage region in the circuit is mitigated, since, assuming a lowered programming voltage, pumping circuitry is not required.
    • 在根据该方法形成的半导体器件和半导体器件的形成方法中,在下导电层和上导电层之间设置有薄的电介质层。 在一个实施例中,薄介电层包括栅极间电介质层,下导电层包括浮动栅极,上介电层包括晶体管的控制栅极,例如非易失性存储单元晶体管。 使用导致下面的浮置栅极的表面粗糙度降低的热处理工艺形成薄介电层,并且导致在浮动栅极上形成薄的氧氮化硅层。 以这种方式,薄介电层提供在下浮动栅极和上控制栅极之间增加的电容耦合。 这也导致降低的编程电压,擦除晶体管的电压和读取电压,同时将阈值电压保持在期望的范围内。 此外,晶体管和所得到的存储单元的尺寸可以被最小化,并且减轻了对电路中的高电压区域的需要,因为假设降低的编程电压,不需要泵浦电路。
    • 9. 发明授权
    • Split-gate nonvolatile memory device and method of manufacturing the same
    • 分离式非易失性存储器件及其制造方法
    • US07160777B2
    • 2007-01-09
    • US10916670
    • 2004-08-11
    • Yong-Suk ChoiSeung-Beom Yoon
    • Yong-Suk ChoiSeung-Beom Yoon
    • H01L21/336
    • H01L27/11521H01L27/115H01L29/42324H01L29/7886H01L29/7887
    • Embodiments of the invention include a gate insulating layer formed on a semiconductor substrate; a spacer-type floating gate and a spacer-type dummy pattern, which are formed on the gate insulating layer and separated apart from each other, the floating gate and the dummy pattern having round surfaces that face outward; a pair of insulating spacers, which are formed on a sidewall of the floating gate and a sidewall of the dummy pattern which face each other; a control gate formed in a self-aligned manner between the pair of insulating spacers; a tunnel insulating layer interposed between the floating gate and the control gate; and source and drain regions formed in the semiconductor substrate outside the floating gate and the dummy pattern.
    • 本发明的实施例包括形成在半导体衬底上的栅极绝缘层; 形成在栅极绝缘层上并且彼此分开的间隔物型浮栅和间隔物型图案,浮栅和虚设图案具有面向外的圆形表面; 一对绝缘间隔物,其形成在浮动栅极的侧壁和虚设图案的彼此面对的侧壁上; 在所述一对绝缘间隔件之间以自对准的方式形成的控制栅极; 插入在所述浮动栅极和所述控制栅极之间的隧道绝缘层; 以及在浮置栅极外部的半导体衬底和虚拟图案中形成的源极和漏极区域。