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    • 1. 发明授权
    • Method of forming DRAM capacitors with protected outside crown surface for more robust structures
    • 形成具有受保护的外冠表面的DRAM电容器的方法用于更坚固的结构
    • US06875655B2
    • 2005-04-05
    • US10802564
    • 2004-03-17
    • Chun-Chieh LinLan-Lin ChaoChia-Hui LinFu-Liang YangChia-Shiung TsaiChanming Hu
    • Chun-Chieh LinLan-Lin ChaoChia-Hui LinFu-Liang YangChia-Shiung TsaiChanming Hu
    • H01L21/02H01L21/336H01L21/8242H01L27/02H01L27/108
    • H01L27/10852H01L27/0207H01L27/10817H01L28/91
    • A method for fabricating a high-density array of crown capacitors with increased capacitance while reducing process damage to the bottom electrodes is achieved. The process is particularly useful for crown capacitors for future DRAM circuits with minimum feature sizes of 0.18 micrometer or less. A conformal conducting layer is deposited over trenches in an interlevel dielectric (ILD) layer, and is polished back to form capacitor bottom electrodes. A novel photoresist mask and etching are then used to pattern the ILD layer to provide a protective interlevel dielectric structure between capacitors. The protective structures prevent damage to the bottom electrodes during subsequent processing. The etching also exposes portions of the outer surface of bottom electrodes for increased capacitance (>50%). In a first embodiment the ILD structure is formed between pairs of adjacent bottom electrodes, and in a second embodiment the ILD structure is formed between four adjacent bottom electrodes.
    • 实现了一种用于制造具有增加的电容的高密度阵列的冠状电容器的方法,同时减少了对底部电极的工艺损伤。 该过程对于具有最小特征尺寸为0.18微米或更小的未来DRAM电路的冠电容器特别有用。 在层间电介质(ILD)层中的沟槽上沉积共形导电层,并将其抛光回形成电容器底部电极。 然后使用新颖的光致抗蚀剂掩模和蚀刻来对ILD层进行图案以在电容器之间提供保护性层间电介质结构。 保护结构可防止在后续处理期间损坏底部电极。 蚀刻还暴露了底部电极的外表面的部分以增加电容(> 50%)。 在第一实施例中,ILD结构形成在成对的相邻底部电极之间,并且在第二实施例中,ILD结构形成在四个相邻的底部电极之间。
    • 5. 发明授权
    • Method for forming multiple spacer widths
    • 形成多个间隔物宽度的方法
    • US07011929B2
    • 2006-03-14
    • US10340245
    • 2003-01-09
    • Ming-Ta LeiYih-Shung LinAi-Sen LiuCheng-Chung LinBaw-Ching PerngChia-Hui Lin
    • Ming-Ta LeiYih-Shung LinAi-Sen LiuCheng-Chung LinBaw-Ching PerngChia-Hui Lin
    • H01L21/302
    • H01L21/823468
    • A method of forming pluralities of gate sidewall spacers each plurality comprising different associated gate sidewall spacer widths including providing a plurality of gate structures formed overlying a substrate and a plurality of dielectric layers formed substantially conformally overlying the gate structures; exposing a first selected portion of the plurality followed by anisotropically etching through a thickness portion comprising at least the uppermost dielectric layer to form a first sidewall spacer width; exposing a first subsequent selected portion of the plurality followed by etching through at least a thickness portion of the uppermost dielectric layer; and, exposing a second subsequent selected portion of the plurality followed by anisotropically etching through at least a thickness portion of the uppermost dielectric layer to form a subsequent sidewall spacer width.
    • 一种形成多个栅极侧壁间隔物的方法,每个栅极侧壁间隔件包括不同的相关栅极侧壁间隔物宽度,包括提供形成在衬底上的多个栅极结构和基本上共形地覆盖栅极结构的多个电介质层; 暴露多个的第一选定部分,然后通过各向异性蚀刻穿过包括至少最上面的介电层的厚度部分以形成第一侧壁间隔物宽度; 暴露多个的第一后续选定部分,然后蚀刻通过至少最上层介电层的厚度部分; 并且暴露多个随后的第二部分,然后通过各向异性蚀刻穿过至少最上面的介电层的厚度部分以形成随后的侧壁间隔物宽度。
    • 7. 发明授权
    • Application of e-beam proximity over-correction to compensate optical
proximity effect in optical lithography process
    • 电子束接近过校正的应用来补偿光学光刻工艺中的光学邻近效应
    • US6051347A
    • 2000-04-18
    • US270595
    • 1999-03-18
    • San-De TzuChia-Hui Lin
    • San-De TzuChia-Hui Lin
    • G03F7/20G03C5/00
    • G03F7/70441Y10S430/143
    • A method of correcting, or compensating for errors encountered in the transfer of patterns is disclosed for use with high resolution e-beam lithography. In a first embodiment, optical proximity effects are incorporated into the e-beam proximity effects by superimposing the two effects to arrive at a compensated dosage level database to produce the desired patterns. In a second embodiment, etching effects are also superimposed on the previous driving database by compensating the e-beam proximity data twice, that is, by over correcting it, to further improve the transfer of patterns without the undesirable effects. It is shown that corrections for a number of other process steps can also be incorporated into the database that drives the e-beam lithography machine in order to achieve high resolution patterns of about one-quarter-micron technology.
    • 公开了一种校正或补偿在图案传送中遇到的错误的方法,用于高分辨率电子束光刻。 在第一实施例中,通过叠加两个效应来将光学邻近效应并入到电子束邻近效应中,以得到补偿剂量水平数据库以产生期望的图案。 在第二实施例中,通过补偿电子束邻近数据两次,即通过对其进行过度校正,也可以对先前的驱动数据库叠加蚀刻效果,以进一步改善图案的传送而不产生不良影响。 显示出许多其他工艺步骤的校正也可以并入驱动电子束光刻机的数据库中,以实现约四分之一微米技术的高分辨率图案。
    • 8. 发明授权
    • Method for multiple spacer width control
    • 多间隔宽度控制方法
    • US07176137B2
    • 2007-02-13
    • US10435009
    • 2003-05-09
    • Baw-Ching PerngYih-Shung LinMing-Ta LeiAi-Sen LiuChia-Hui LinCheng-Chung Lin
    • Baw-Ching PerngYih-Shung LinMing-Ta LeiAi-Sen LiuChia-Hui LinCheng-Chung Lin
    • H01L21/302
    • H01L29/6656H01L21/823468
    • A method of forming pluralities of gate sidewall spacers each plurality comprising different associated gate sidewall spacer widths including providing a first plurality of gate structures; blanket depositing a first dielectric layer over the first plurality of gate structures; blanket depositing a second dielectric layer over the first dielectric layer; etching back through a thickness of the first and second dielectric layers; blanket depositing a first photoresist layer to cover the first plurality and patterning to selectively expose at least a second plurality of gate structures; isotropically etching the at least a second plurality of gate structures for a predetermined time period to selectively etch away a predetermined portion of the first dielectric layer; and, selectively etching away the second dielectric layer to leave gate structures comprising a plurality of associated sidewall spacer widths.
    • 形成多个栅极侧壁间隔物的方法,每个栅极侧壁间隔件包括不同的相关栅极侧壁间隔物宽度,包括提供第一多个栅极结构; 在第一多个栅极结构上覆盖沉积第一介电层; 在第一介电层上铺设第二介电层; 通过第一和第二介电层的厚度回蚀; 覆盖沉积第一光致抗蚀剂层以覆盖第一多个并且图案化以选择性地暴露至少第二多个栅极结构; 对所述至少第二多个栅极结构进行各向同性蚀刻预定的时间段以选择性地蚀刻掉所述第一介电层的预定部分; 并且选择性地蚀刻掉第二介电层以留下包括多个相关联的侧壁间隔物宽度的栅极结构。