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    • 21. 发明授权
    • Method of forming multilayer titanium nitride film by multiple step chemical vapor deposition process and method of manufacturing semiconductor device using the same
    • 通过多步化学气相沉积工艺形成多层氮化钛膜的方法和使用其制造半导体器件的方法
    • US06207557B1
    • 2001-03-27
    • US09356928
    • 1999-07-19
    • Jang-eun LeeJu-hyuck ChungTae-wook Seo
    • Jang-eun LeeJu-hyuck ChungTae-wook Seo
    • H01L214763
    • H01L21/76856H01L21/28556H01L21/76843H01L21/76846
    • A method of forming a multilayer titanium nitride film hardly containing any Cl component by a multiple step chemical vapor deposition method, and a method of manufacturing a semiconductor device using the same are provided. In the present invention, a multilayer TiN film is formed by multiple step chemical vapor deposition (CVD) on a semiconductor substrate on which an underlayer is formed. In order to form the multilayer TiN film, an underlayer protective TiN film is formed by forming a first TiN film on the underlayer and NH3 annealing the first TiN film. A main TiN film is formed by forming a second TiN film on the underlayer protective TiN film and NH3 annealing the second TiN film. A source gas used in order to form the first TiN film has a smaller TiCl4 to NH3 gas flow ratio than a source gas for forming the second TiN film. In order to apply the multilayer TiN film to the fabrication of the semiconductor device, an insulating film having a contact hole is formed on a semiconductor substrate. A Ti film is formed on the inner wall of the contact hole. A multilayer TiN film is formed on the Ti film by the multiple step CVD method. A metal plug is formed on the multilayer TiN film.
    • 提供了通过多步化学气相沉积法形成几乎不含任何Cl成分的多层氮化钛膜的方法,以及制造使用其的半导体器件的方法。 在本发明中,通过在其上形成有底层的半导体衬底上进行多步化学气相沉积(CVD)形成多层TiN膜。 为了形成多层TiN膜,通过在底层上形成第一TiN膜,并对第一TiN膜进行NH 3退火,形成下层保护TiN膜。 通过在底层保护性TiN膜上形成第二TiN膜并使NH 3退火第二TiN膜来形成主TiN膜。 用于形成第一TiN膜的源气体与用于形成第二TiN膜的源气体相比具有较小的TiCl 4与NH 3气体流量比。 为了将多层TiN膜施加到半导体器件的制造中,在半导体衬底上形成具有接触孔的绝缘膜。 在接触孔的内壁上形成有Ti膜。 通过多步CVD法在Ti膜上形成多层TiN膜。 在多层TiN膜上形成金属塞。
    • 25. 发明授权
    • Magnetic memory device
    • 磁存储器件
    • US08035145B2
    • 2011-10-11
    • US12773451
    • 2010-05-04
    • Jun-Soo BaeJang-Eun LeeHyun-Jo KimSe-Chung OhKyung-Tae Nam
    • Jun-Soo BaeJang-Eun LeeHyun-Jo KimSe-Chung OhKyung-Tae Nam
    • H01L21/02
    • G11C11/15B82Y25/00B82Y40/00H01F10/3254H01F10/3272H01F10/3281H01F41/302H01L43/08
    • A magnetic memory device is provided. The magnetic memory device includes an invariable pinning pattern and a variable pinning pattern on a substrate. A tunnel barrier pattern is interposed between the invariable pinning pattern and the variable pinning pattern, and the pinned pattern is interposed between the invariable pinning pattern and the tunnel barrier pattern. A storage free pattern is interposed between the tunnel barrier pattern and the variable pinning pattern, and a guide free pattern is interposed between the storage free pattern and the variable pinning pattern. A free reversing pattern is interposed between the storage and guide free patterns. The free reversing pattern reverses a magnetization direction of the storage free pattern and a magnetization direction of the guide free pattern in the opposite directions.
    • 提供磁存储器件。 磁存储器件在衬底上包括不变的钉扎图案和可变的钉扎图案。 在不变的钉扎图案和可变钉扎图案之间插入隧道势垒图案,并且钉扎图案介于不变钉扎图案和隧道屏障图案之间。 在隧道势垒图案和可变钉扎图案之间插入无存储图案,并且在存储空闲图案和可变钉扎图案之间插入无引导图案。 在存储和无引导模式之间插入一个自由的反转模式。 自由反转图案反转无存储图案的磁化方向和反向自由图案的磁化方向。
    • 29. 发明授权
    • Magnetic random access memory device and method of forming the same
    • 磁性随机存取存储器件及其形成方法
    • US07645619B2
    • 2010-01-12
    • US12073098
    • 2008-02-29
    • Se-Chung OhJang-Eun LeeJun-Soo BaeHyun-Jo KimKyung-Tae NamYoung-Ki Ha
    • Se-Chung OhJang-Eun LeeJun-Soo BaeHyun-Jo KimKyung-Tae NamYoung-Ki Ha
    • H01L21/00
    • G11C11/16B82Y10/00B82Y25/00G11B5/3909H01L27/228H01L43/08H01L43/12Y10T29/49034Y10T29/49044
    • Example embodiments of the present invention disclose a semiconductor memory device and a method of forming a memory device. A semiconductor memory device may include a digit line disposed on a substrate, an intermediate insulating layer covering the digit line, a magnetic tunnel junction (MTJ) pattern disposed on the intermediate insulating layer and over the digit line, the MTJ pattern including a sequentially stacked lower magnetic pattern, upper magnetic pattern, and capping pattern, wherein the capping pattern does not react with the upper magnetic pattern at a temperature above about 280° C., and a bit line connected to the capping pattern and disposed to intersect the digit line. A method of forming a semiconductor memory device may include forming a digit line on a substrate, forming an intermediate insulating layer covering the digit line, forming a magnetic tunnel junction (MTJ) pattern on the intermediate insulating layer, the MTJ pattern including a sequentially stacked lower magnetic pattern, upper magnetic pattern, and capping pattern, wherein the capping pattern does not react with the upper magnetic pattern at a temperature above about 280° C., performing an annealing operation at a temperature of about 350° C. or higher, and forming a bit line connected to the capping pattern and disposed to intersect the digit line.
    • 本发明的示例性实施例公开了半导体存储器件和形成存储器件的方法。 半导体存储器件可以包括设置在衬底上的数字线,覆盖数字线的中间绝缘层,设置在中间绝缘层上方和数字线上的磁性隧道结(MTJ)图案,MTJ图案包括顺序堆叠 下磁性图案,上磁性图案和封盖图案,其中封盖图案在高于约280℃的温度下不与上磁性图案反应,而位线连接到封盖图案并且设置成与数字线相交 。 形成半导体存储器件的方法可以包括在衬底上形成数字线,形成覆盖数字线的中间绝缘层,在中间绝缘层上形成磁隧道结(MTJ)图案,MTJ图案包括顺序层叠的 较低的磁性图案,上部磁性图案和封盖图案,其中封盖图案在高于约280℃的温度下不与上部磁性图案反应,在约350℃或更高的温度下进行退火操作, 并且形成连接到所述封盖图案并且设置成与所述数字线相交的位线。