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    • 31. 发明授权
    • Semiconductor device fabrication method
    • 半导体器件制造方法
    • US5569628A
    • 1996-10-29
    • US535323
    • 1995-09-27
    • Kousaku YanoTomoyasu MurakamiMasayuki EndoNoboru Nomura
    • Kousaku YanoTomoyasu MurakamiMasayuki EndoNoboru Nomura
    • H01L21/28H01L21/768H01L21/465
    • H01L21/76841H01L21/76843
    • A silicon dioxide film is partly etched away to form an opening thereby exposing a silicon substrate. The surface of the opening, which is almost entirely covered with Si-OH, is coated with hexamethyldisilazane (HMDS) to bring about a silylation reaction. This causes the silicon substrate surface to be covered with a molecular film formed by replacing the hydrogen part in Si-OH with Si((CH.sub.3).sub.3. Atoms of aluminum are ejected by a sputtering process. The ejected aluminum atoms collide with the molecular film. Although some hydrocarbons (CH.sub.x) are sputtered or ejected due to such collision, a SiO.sub.x C.sub.y H.sub.z film 12' transformed from the molecular film is left between an aluminum film deposited and the silicon substrate. This SiO.sub.x C.sub.y H.sub.z film 12' acts as a barrier metal. The presence of the SiO.sub.x C.sub.y H.sub.z film prevents the occurrence of counter diffusion in the Al-Si system. No spikes are formed as a result.
    • 部分地蚀刻掉二氧化硅膜以形成开口,从而暴露硅衬底。 几乎完全用Si-OH覆盖的开口的表面涂覆有六甲基二硅氮烷(HMDS)以进行甲硅烷基化反应。 这导致硅衬底表面被用Si((CH 3)3代替Si-OH中的氢部分而形成的分子膜覆盖,铝的原子通过溅射工艺喷射,喷射的铝原子与分子膜碰撞 虽然由于这种碰撞而使一些烃类(CHx)溅射或喷射,但是从分子膜转化的SiO x C y H z膜12'留在沉积的铝膜和硅基板之间,该SiOxCyHz膜12'作为阻挡金属, SiOxCyHz膜的存在防止了在Al-Si系统中产生反向扩散,结果不形成尖峰。
    • 38. 发明授权
    • Exposure apparatus including an optical system for aligning a reticle
and a wafer
    • 曝光装置包括用于对准掩模版和晶片的光学系统
    • US4771180A
    • 1988-09-13
    • US916738
    • 1986-10-08
    • Noboru NomuraKazuhiro Yamashita
    • Noboru NomuraKazuhiro Yamashita
    • G03F9/00G01N21/86
    • G03F9/7049
    • A reduction projection type alignment and exposure apparatus having a light source, for alignment, a reticle having at least a first grating, first lens system, a spatial filter disposed around a Fourier spectral plane of the first lens system, second lens system, a wafer having at least a second grating, and a photo-detector for detecting light intensity of superimposed beams appearing on the spatial filter. An optical system for light exposure is provided separately from the optical system for alignment which includes the light source for alignment, first and second lens system, spatial filter, etc. The light beam generated from the light source for alignment is applied to the reticle at which it is divided into a plurality of difracted light beams by the first grating, and the diffracted light beams are applied through the first lens system, spatial filter and second lens system onto the wafer so that the diffracted light beams are re-diffracted by the second grating, and the re-diffracted light beams are superimposed with the diffracted light beams and the light intensity of the superimposed beams detected by the photo-detector.
    • 一种缩小投影型对准和曝光装置,具有用于对准的光源,具有至少第一光栅的掩模版,第一透镜系统,设置在第一透镜系统的傅立叶光谱平面附近的空间滤光器,第二透镜系统,晶片 具有至少第二光栅,以及用于检测出现在空间滤光片上的叠加光束的光强度的光检测器。 与用于对准的光学系统分开设置用于曝光的光学系统,其包括用于对准的光源,第一和第二透镜系统,空间滤光器等。从用于对准的光源产生的光束被施加到掩模版 将其通过第一光栅分割为多个衍射光束,并且将衍射光束通过第一透镜系统,空间滤光器和第二透镜系统施加到晶片上,使得衍射光束被衍射的光束 并且再衍射光束与衍射光束叠加,并且由光检测器检测到的叠加光束的光强度。