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    • 72. 发明授权
    • Semiconductor device and optical pickup device
    • 半导体器件和光学拾取器件
    • US06810057B1
    • 2004-10-26
    • US09718568
    • 2000-11-22
    • Kunio ItohNobuyuki UemuraMasaaki Yuri
    • Kunio ItohNobuyuki UemuraMasaaki Yuri
    • H01S500
    • G11B7/1362G11B7/123G11B7/22G11B2007/0006H01S5/02236H01S5/02248H01S5/02292H01S5/4012
    • A semiconductor device having a plurality of semiconductor laser elements is provided, which is capable of reducing an interval of emission points between the semiconductor laser elements and also capable of preventing heat generated by a semiconductor laser element from affecting other semiconductor elements. A concave portion is formed on a silicon substrate, and a protrusion of a quadrangular truncated pyramidal shape consisting of slanted faces of a (1 1 1) plane, a (1 {overscore (1)} 1) plane, a ({overscore (1)} {overscore (1)} 1) plane and a ({overscore (1)} 1 1) plane is formed near the center of the concave portion by using the silicon process. Among these slanted faces, a (1 1 1) outer face and a (1 1 1) inner face are determined to be reflecting mirror surfaces. The semiconductor laser elements respectively are fixed on small protrusions formed on the concave portion, and a photodetector for receiving light beams L1′ and L2′ returning from an optical disc is disposed on a top face of the protrusion.
    • 提供具有多个半导体激光元件的半导体器件,其能够减小半导体激光元件之间的发射点的间隔,并且还能够防止由半导体激光元件产生的热量影响其他半导体元件。 在硅衬底上形成凹部,并且由(111)面,((过(1)面),((超(1)面) 通过使用硅工艺在凹部的中心附近形成超芯(11)面和(超(11)面),在这些倾斜面中,(1111)外表面和(11 1)内表面被确定为反射镜表面,半导体激光元件分别固定在形成在凹部上的小突起上,并且用于接收从光盘返回的光束L1'和L2'的光电检测器设置在顶部 突起面。