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    • 41. 发明授权
    • Dispersion plate for flowing vaporizes compounds used in chemical vapor deposition of films onto semiconductor surfaces
    • 用于流动的分散板将用于化学气相沉积膜的化合物蒸发到半导体表面上
    • US06302965B1
    • 2001-10-16
    • US09638506
    • 2000-08-15
    • Salvador UmotoyVincent KuXiaoxiong YuanLawrence Chung-Lai Lei
    • Salvador UmotoyVincent KuXiaoxiong YuanLawrence Chung-Lai Lei
    • C23C1600
    • C23C16/45576C23C16/16C23C16/455
    • A dispersion plate for evenly flowing at low pressure into a processing chamber vaporized material, such as a tungsten compound for deposition of metal layers onto a semiconductor, has a disc-like body with a center axis, an input face and an output face. The dispersion plate has a cup-like entrance along the center axis in its input face for receiving a stream of vaporized material and a plurality of passages for flow of vapor with each passage having a length and a diameter and extending radially from the entrance like the spokes of a wheel at inclined angles relative to the center axis from the input face to the output face. Two annular grooves are cut into the output face and intersect with the respective ends of the passages. The plate has a center hole with a flared diameter extending along the center axis from the entrance in the input face to the output face. The hole and plurality of passages are designed to have sufficiently large diameters so as to keep pressure drops low with respect to vapor flowing through the plate.
    • 用于在低压下均匀流动到处理室的分散板,例如用于将金属层沉积到半导体上的钨化合物的气化材料具有中心轴,输入面和输出面的盘状体。 分散板在其输入面中具有沿着中心轴线的杯状入口,用于接收气化材料流和多个用于蒸汽流动的通道,每个通道具有长度和直径并且从入口径向延伸,如 轮的轮辐相对于从输入面到输出面的中心轴线呈倾斜角。 两个环形槽被切割成输出面并与通道的相应端相交。 该板具有中心孔,该中心孔具有沿着中心轴线从输入面入口到输出面延伸的扩口直径。 孔和多个通道被设计成具有足够大的直径,以便相对于流过板的蒸气保持压力降低。
    • 43. 发明授权
    • Heater with shadow ring and purge above wafer surface
    • 加热器带有阴影环并在晶片表面上方吹扫
    • US5888304A
    • 1999-03-30
    • US626789
    • 1996-04-02
    • Salvador P. UmotoyAlan F. MorrisonKarl A. LittauRichard A. MarshLawrence Chung-Lai LeiDale DuBois
    • Salvador P. UmotoyAlan F. MorrisonKarl A. LittauRichard A. MarshLawrence Chung-Lai LeiDale DuBois
    • C23C16/02C23C16/44C23C16/455C23C16/458C23C16/46H01L21/205H01L21/285C23C16/00
    • C23C16/45521C23C16/4585C23C16/46
    • This invention provides a method and apparatus for supporting a wafer in a processing chamber, where the wafer is supported and heated from below via a heater pedestal having a diameter larger than that of the wafer. A process fluid flowing downward toward the top of the wafer is inhibited from depositing near the wafer edge by a shadow ring. The shadow ring, which is placed over but does not contact the wafer, physically masks an annular strip of the wafer near its edge. The shadow ring inhibits deposition of process fluides on the wafer in two distinct ways. First, the shadow ring physically obstructs process gas, flowing downward from above the wafer, from depositing on the masked portion of the wafer. Second, the shadow ring is used to direct a flow of a purge gas to inhibit process gas from seeping under the shadow ring and depositing near the wafer edge. A purge gas manifold is defined by a cylindrical annulus located concentrically below the shadow ring and circumscribing the heater pedestal. A purge gap between the wafer and the shadow ring forms the outlet of the purge gas manifold. The purge gas flows out of the purge gap, inhibiting the process gas from entering the purge gap, and thus further inhibiting deposition on the masked portion of the wafer.
    • 本发明提供了一种用于在处理室中支撑晶片的方法和装置,其中通过直径大于晶片直径的加热器基座从下方支撑晶片并从其下被加热。 向晶片顶部向下流动的工艺流体被阴影环抑制在晶片边缘附近沉积。 放置在但不接触晶片的阴影环在其边缘附近物理屏蔽晶片的环形条。 阴影环以两种截然不同的方式阻止了工艺流程在晶片上沉积。 首先,阴影环物理地阻挡从晶片上方向下流动的工艺气体沉积在晶片的掩蔽部分上。 第二,阴影环用于引导吹扫气体的流动,以阻止处理气体在阴影环下渗出并沉积在晶片边缘附近。 吹扫气体歧管由同心地位于阴影环下方并围绕加热器基座的圆柱形环限定。 晶片和阴影环之间的吹扫间隙形成吹扫气体歧管的出口。 净化气体流出吹扫间隙,阻止处理气体进入吹扫间隙,从而进一步抑制沉积在晶片的掩蔽部分上。