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    • 5. 发明授权
    • Laminated wear ring
    • 层压耐磨环
    • US06758939B2
    • 2004-07-06
    • US09943699
    • 2001-08-31
    • David MarquardtWayne LougherStephen C. Schultz
    • David MarquardtWayne LougherStephen C. Schultz
    • B24B100
    • B24B37/30B24B37/32
    • A laminated wear ring for a chemical mechanical planarization (CMP) apparatus provides improved control of the removal rate of material from the edge of a wafer during a polishing/planarization operation. The laminated wear ring includes a high stiffness stainless steel base and a plastic laminate. The high stiffness stainless steel base avoids flexing of the wear ring during polishing and thus provides control of the flexing of a polish pad against which the wafer surface is pressed. The plastic laminate protects the stainless steel base from attack by the polishing slurry and provides a buffer that protects the stainless steel base from mechanically damaging the wafer and vice versa.
    • 用于化学机械平面化(CMP)装置的层压耐磨环提供了在抛光/平坦化操作期间对晶片边缘的材料的去除速率的改进的控制。 层压耐磨环包括高刚度不锈钢基座和塑料层压板。 高刚度不锈钢底座避免了抛光过程中磨损环的弯曲,从而提供了对晶片表面进行加压的抛光垫的弯曲的控制。 塑料层压板保护不锈钢基体免受抛光浆料的侵蚀,并提供缓冲液,保护不锈钢基体免受机械损伤晶片,反之亦然。