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    • 6. 发明申请
    • TESTING OF ELECTROLUMINESCENT SEMICONDUCTOR WAFERS
    • 电致发光半导体波长的测试
    • US20130043875A1
    • 2013-02-21
    • US13332657
    • 2011-12-21
    • DONG CHEN
    • DONG CHEN
    • G01R31/26
    • G01R31/2648F21V29/83F21V2200/00F21Y2103/00G01R31/2656H05B31/00H05B2206/00
    • Forward voltage drift in a probe system for the characterization of a light-emitting wafer is virtually eliminated by directing compressed air to the probe so as to ensure that the exact same temperature conditions exist during repeated measurements of the wafer. In one embodiment of the invention, an air flow at room temperature is used, either continuously or intermittently. In another embodiment, the temperature of the probe is controlled by flowing a liquid or a gas through micro-channels built into the probe. In yet another embodiment, the probe is connected to a solid-state Peltier cell that is computer-controlled to maintain the probe's temperature at a predetermined set-point. A temperature-controlled chamber or a thermal reservoir enclosing the probe could be used as well. The results obtained showed remarkable repeatability.
    • 用于表征发光晶片的探针系统中的正向电压漂移实际上通过将压缩空气引导到探针来消除,以确保在晶片的重复测量期间存在完全相同的温度条件。 在本发明的一个实施方案中,连续地或间歇地使用室温下的空气流。 在另一个实施例中,通过将液体或气体流经内置于探针中的微通道来控制探针的温度。 在另一个实施例中,探针连接到被计算机控制的固态珀耳帖细胞,以将探针的温度保持在预定的设定点。 也可以使用温度控制室或包围探针的热储存器。 获得的结果显示出显着的重复性。
    • 8. 发明授权
    • Testing of electroluminescent semiconductor wafers
    • 电致发光半导体晶片的测试
    • US09057757B2
    • 2015-06-16
    • US13332657
    • 2011-12-21
    • Dong Chen
    • Dong Chen
    • G01R31/00G01R31/26H05B31/00F21V8/00F21Y103/00G01R31/265
    • G01R31/2648F21V29/83F21V2200/00F21Y2103/00G01R31/2656H05B31/00H05B2206/00
    • Forward voltage drift in a probe system for the characterization of a light-emitting wafer is virtually eliminated by directing compressed air to the probe so as to ensure that the exact same temperature conditions exist during repeated measurements of the wafer. In one embodiment of the invention, an air flow at room temperature is used, either continuously or intermittently. In another embodiment, the temperature of the probe is controlled by flowing a liquid or a gas through micro-channels built into the probe. In yet another embodiment, the probe is connected to a solid-state Peltier cell that is computer-controlled to maintain the probe's temperature at a predetermined set-point. A temperature-controlled chamber or a thermal reservoir enclosing the probe could be used as well. The results obtained showed remarkable repeatability.
    • 用于表征发光晶片的探针系统中的正向电压漂移实际上通过将压缩空气引导到探针来消除,以便确保在晶片的重复测量期间存在完全相同的温度条件。 在本发明的一个实施方案中,连续地或间歇地使用室温下的空气流。 在另一个实施例中,通过将液体或气体流经内置于探针中的微通道来控制探针的温度。 在另一个实施例中,探针连接到被计算机控制的固态珀耳帖细胞,以将探针的温度保持在预定的设定点。 也可以使用温度控制室或包围探针的热储存器。 获得的结果显示出显着的重复性。