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研制出一种具有非对称交叠多晶硅电极的228×248个单元的摄像传感器。它以帧传输模式工作,用NTSC制彩色电视同步信号得到的三组四相时钟脉冲来驱动。用四相时钟脉冲似二相模式来传输信号载流子。这种器件结构能稳定的工作,有高的光敏性,制造成品率也高。这种器件结构和似二相模式结合起来具有大的信号处理能力。另外,研制了具有小的周期性尖峰电流的改进了的低噪声电荷探测器。用2:1隔行扫描,得到了没有视频缺陷的相当好的重显图像。
A 228 × 248 cell imaging sensor with asymmetric overlapping polysilicon electrodes was developed. It operates in frame transmission mode and is driven by three sets of four-phase clock pulses derived from the NTSC color television sync signal. Signal carriers are transmitted in a two-phase mode with a four-phase clock pulse. This device structure can work stably with high photosensitivity and high manufacturing yield. This device structure combined with a two-phase mode has a large signal processing capability. In addition, an improved low-noise charge detector with small periodic peak current has been developed. With 2: 1 interlacing, a fairly good heavy image without video defects is obtained.