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    • 1. 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。
    • 6. 发明申请
    • STACKED SLICE PRINTHEAD
    • 堆叠拼贴
    • US20110141206A1
    • 2011-06-16
    • US12639347
    • 2009-12-16
    • Patrick C. P. CheungKarl A. LittauMichael Y. YoungSteven A. Buhler
    • Patrick C. P. CheungKarl A. LittauMichael Y. YoungSteven A. Buhler
    • B41J2/045
    • B41J2/14233B41J2/161B41J2/1623B41J2/1629
    • A side-firing printhead comprises a stack that includes a plurality of slices, wherein each slice includes a PCB trigger layer and a diaphragm layer, the PCB trigger layer controls the flow of ink from the diaphragm layer, a first side of the diaphragm layer includes at least one cavity that delivers ink via one or more aperture braces. An aperture plate is coupled to one side of the stack to interface to the diaphragm layers contained therein, wherein the aperture plate contains a plurality of apertures that are located at each aperture brace. A first bracket is disposed on the top of the stack and a second bracket is disposed on the bottom of the stack, wherein at least one fastener couples the second bracket to the first bracket such that a predetermined amount of pressure is applied to the stack.
    • 侧面喷射打印头包括包括多个切片的堆叠,其中每个切片包括PCB触发层和隔膜层,所述PCB触发层控制来自所述隔膜层的墨的流动,所述隔膜层的第一侧包括 至少一个通过一个或多个孔径支架输送墨水的空腔。 孔板联接到堆叠的一侧以与包含在其中的隔膜层相接合,其中孔板包含位于每个孔支架处的多个孔。 第一支架设置在堆叠的顶部,并且第二支架设置在堆叠的底部,其中至少一个紧固件将第二支架联接到第一支架,使得预定量的压力施加到堆叠。