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    • 9. 发明公开
    • 고체촬상소자
    • 固态成像元件
    • KR1020100038446A
    • 2010-04-14
    • KR1020107003063
    • 2008-09-04
    • 고쿠리츠다이가쿠호진 도호쿠다이가쿠가부시키가이샤 시마쓰세사쿠쇼
    • 스가와시게토시곤도야스시도미나가히데키
    • H04N5/343H04N5/357
    • H04N5/35527H04N5/37452H04N5/378
    • Pixels (10) including photo diodes are arranged in a two-dimensional array in a pixel region (2a). Storage units holding signals generated by the respective pixels for the number of continuous imaging frames are arranged in a storage region (3a). The pixel region (2s) and the storage region (3a) are arranged separately from each other on a semiconductor substrate. All the pixels simultaneously execute photo charge accumulation and output signals generated by the photo charge accumulation via independent pixel output lines (14) in parallel. In the storage units connected to one pixel output line, sampling transistors in different storage units are successively turned ON upon one exposure so as to successively hold signals in capacitors of the respective storage units. After continuous imaging is complete, all the pixel signals are successively read out. Since all the gate loads are not driven simultaneously like a CCD, it is possible to suppress power consumption and it is possible to perform a high-speed drive. Moreover, since the storage region is separated from the pixel region, it is possible to prevent signal degradation by an excessive flow-in of the photo charges. This enables a continuous imaging of a higher speed than in the conventional technique and improves the image quality of a captured image.
    • 包括光电二极管的像素(10)以像素区域(2a)中的二维阵列排列。 保持由各个像素产生的连续成像帧数的存储单元被布置在存储区域(3a)中。 像素区域(2s)和存储区域(3a)在半导体衬底上彼此分开布置。 所有的像素并行地通过独立的像素输出线(14)同时执行光电荷累积和由光电荷累积产生的输出信号。 在连接到一个像素输出线的存储单元中,不同存储单元中的采样晶体管在一次曝光时连续导通,以便连续地将信号保持在各个存储单元的电容器中。 连续成像完成后,连续读出所有像素信号。 由于所有的栅极负载都不像CCD那样同时驱动,所以可以抑制功耗,并且可以执行高速驱动。 此外,由于存储区域与像素区域分离,所以可以防止由于光电荷的过度流入引起的信号劣化。 这使得能够与传统技术相比具有更高速度的连续成像,并且提高了拍摄图像的图像质量。