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    • 2. 发明申请
    • SEMICONDUCTOR DEVICE
    • 半导体器件
    • WO1993026046A1
    • 1993-12-23
    • PCT/JP1993000794
    • 1993-06-14
    • KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHAKURATA, Sin-ichiroKOBAYASHI, KenjiZENKI, Tomoyoshi
    • KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA
    • H01L27/146
    • H01L27/14643
    • A semiconductor device for an original reader having a switching element such as a diode, an optical sensor element comprising a photoelectric conversion element and a switching element, and a switching element used in an image reader for inputting image information in a facsimile apparatus, an image scanner, and the like. In a semiconductor device (90) provided with a semiconductor element (blocking diode) (94) having a switching function and comprising a lower electrode (94a), a semiconductor layer (94b), an upper electrode (94c), all of which are formed vertically in this order; at least either one of the lower electrode (94a) and the upper electrode (94c) consists of one or more layers, and out of the conductive layers at least the one which is in contact with the semiconductor layer (94b) is transparent. An optical sensor element and an original document reader according to the present invention employ such semiconductor devices having switching function. In such a semiconductor device thus structured, the reverse direction current involved in switching elements such as blocking diodes and in optical sensor elements can be reduced, making it possible to enhance the switching speed, and to obtain exact signal output from the optical sensor element. Further, in an original document reader having these switching elements or optical sensor elements, inverted residual images can be reduced, and at the same time, the reading can be executed at a higher speed.
    • 一种用于具有诸如二极管的开关元件的原始读取器的半导体器件,包括光电转换元件和开关元件的光学传感器元件,以及用于在传真设备中输入图像信息的图像读取器中的开关元件,图像 扫描仪等。 在具有切换功能的半导体元件(阻挡二极管)(94)的半导体器件(90)中,包括下电极(94a),半导体层(94b),上电极(94c) 按此顺序垂直形成; 下电极(94a)和上电极(94c)中的至少一个由一层或多层组成,并且至少与半导体层(94b)接触的导电层中的导电层中的至少一个是透明的。 根据本发明的光学传感器元件和原稿读取器采用具有开关功能的这种半导体器件。 在这样构成的这样的半导体装置中,可以减少诸如阻挡二极管和光学传感器元件的开关元件中所涉及的反向电流,从而可以提高开关速度,并获得从光学传感器元件输出的精确信号。 此外,在具有这些开关元件或光学传感器元件的原稿读取器中,可以减少反转的残留图像,同时可以以更高的速度执行读取。