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热词
    • 2. 发明授权
    • Thermally processing a substrate
    • 热处理基材
    • US06215106B1
    • 2001-04-10
    • US09350415
    • 1999-07-08
    • Ryan C. BoasAjit BalakrishnaBenjamin B. BiermanBrian L. HaasDean JenningsWolfgang R. Aderhold
    • Ryan C. BoasAjit BalakrishnaBenjamin B. BiermanBrian L. HaasDean JenningsWolfgang R. Aderhold
    • F27B514
    • C23C16/45504C23C16/4401C23C16/4408C23C16/45508C23C16/45519C23C16/4586C23C16/46C23C16/52C30B25/10C30B25/14
    • A thermal processing method is described in which a temperature response of a substrate may be controlled during a heat-up phase or a cool-down phase, or during both phases. This reduces the thermal budget of the substrate and improves the quality and performance of devices formed on the substrate. In particular, by controlling the rate of heat transfer between the substrate and a thermal reservoir (e.g., a watercooled reflector plate assembly), the temperature response of the substrate may be controlled during the thermal process. The rate of heat transfer may changed by changing the thermal conductivity between the substrate and the thermal reservoir, by changing the emissivity of a surface of the thermal reservoir, or by changing the distance between the substrate and the thermal reservoir. The thermal conductivity may be changed by changing the characteristics of a thermal transport medium (e.g., a purge gas) located between the substrate and the thermal reservoir. For example, the thermal conductivity may be changed by changing the composition of the purge gas or the pressure of the purge gas between the substrate and the thermal reservoir. In one implementation, the substrate is heated in accordance with a heating schedule and, during the heating schedule, the rate of heat transfer between the substrate and a thermal reservoir inside the thermal processing system is changed. In another implementation, a first purge gas is supplied into the thermal processing system, the substrate is heated in accordance with a heating schedule, and a second purge gas that is different from the first purge gas is supplied into the thermal processing system.
    • 描述了一种热处理方法,其中可以在加热阶段或冷却阶段期间或在两个阶段期间控制衬底的温度响应。 这降低了基板的热预算,并改善了在基板上形成的器件的质量和性能。 特别地,通过控制基板和热储存器(例如,水冷反射板组件)之间的热传递速率,可以在热处理期间控制基板的温度响应。 通过改变基底和热储层之间的热导率,通过改变热储层表面的发射率,或通过改变基底和热储层之间的距离来改变传热速率。 可以通过改变位于基板和热储存器之间的热传输介质(例如,吹扫气体)的特性来改变热导率。 例如,可以通过改变吹扫气体的组成或衬底和热存储器之间的吹扫气体的压力来改变热导率。 在一个实施方案中,根据加热方案对基底进行加热,并且在加热计划期间改变基底和热处理系统内的热储存器之间的热传递速率。 在另一实施方案中,将第一吹扫气体供应到热处理系统中,基于加热时间表加热基板,并且将不同于第一吹扫气体的第二吹扫气体供应到热处理系统中。