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    • 12. 发明申请
    • Power supply circuit and image display apparatus using the same
    • 电源电路及使用其的图像显示装置
    • US20070165017A1
    • 2007-07-19
    • US11604331
    • 2006-11-27
    • Hidenao KubotaYuzo NishinakaYuki IwaneYutaka YamadaKatsunobu Kimura
    • Hidenao KubotaYuzo NishinakaYuki IwaneYutaka YamadaKatsunobu Kimura
    • G09G5/00
    • G09G3/2965G09G2330/02G09G2330/06
    • It is an object of the present invention to provide an image display apparatus which enables cost reduction while being free from electromagnetic interference problems.A power supply circuit comprises, on a single circuit board, an AC inlet to which a power cord is connected from an external AC power supply, a filter circuit to which an inductance element is connected to suppress leakage of electromagnetic waves to the outside of the image display apparatus, and a switch which switches on/off an AC output supplied from the filter circuit. The circuit board of the power supply circuit is entirely covered by electromagnetic shielding means to shield electromagnetic waves. The electromagnetic shielding means is composed of, for example, a first shielding section which surrounds the lateral side of the circuit board and a second shielding section which covers the upper side of the circuit board. The second shielding section is formed of a part of the flat section of a rear cover of the image display apparatus.
    • 本发明的一个目的是提供一种能够在不受电磁干扰问题的情况下降低成本的图像显示装置。 电源电路在单个电路板上包括从外部AC电源连接电源线的AC入口,连接有电感元件的滤波电路,以抑制电磁波向外部的泄漏 图像显示装置以及从该滤波器电路提供的AC输出的开关。 电源电路的电路板完全被电磁屏蔽装置覆盖,以屏蔽电磁波。 电磁屏蔽装置例如包括围绕电路板的侧面的第一屏蔽部分和覆盖电路板的上侧的第二屏蔽部分。 第二屏蔽部分由图像显示装置的后盖的平坦部分的一部分形成。