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    • 10. 发明申请
    • Fingerprint imaging using a flat panel detector
    • 使用平板检测器的指纹图像
    • US20050094855A1
    • 2005-05-05
    • US10697901
    • 2003-10-29
    • Cesar ProanoIvan Mollov
    • Cesar ProanoIvan Mollov
    • G06K9/00
    • G06K9/0002
    • A capacitance fingerprint imaging apparatus including an insulator layer and a pixel array coupled to a bottom surface of the insulator layer. Each pixel of the array has a storage capacitor and an electrode coupled to the bottom surface of the insulating layer. A charge may be driven from a finger into the storage capacitor through an electrode. A conductive structure may be adjacent the active area of the imager through which a small pulse is applied to the finger. The pulse may allow an increase in the charge difference between the pixels that have contact with the finger and the pixels that do not contact the finger. A pulse may also be applied to the other storage capacitor contact so that at every frame a combination of the charge from the storage capacitor driven by the finger and a constant charge due to the pulse will exit the capacitor.
    • 一种电容指纹成像设备,包括绝缘体层和耦合到绝缘体层的底表面的像素阵列。 阵列的每个像素具有存储电容器和耦合到绝缘层的底表面的电极。 电荷可以通过电极从手指驱动到存储电容器中。 导电结构可以与成像器的有效区域相邻,通过该区域将小脉冲施加到手指。 脉冲可以允许与手指接触的像素与不接触手指的像素之间的电荷差异增加。 也可以向另一个存储电容器触点施加脉冲,使得在每个帧处,由手指驱动的存储电容器的电荷和由于脉冲引起的恒定电荷的组合将离开电容器。