Biometric sensor and sensor panel, method for detecting biometric pattern using the same, and method for manufacturing the same

A biometric sensor panel, comprising:

• a first flexible substrate;
• a plurality of first electrodes formed on the first flexible substrate, the first electrodes being arranged in a first direction;
• a second flexible substrate;
• a plurality of second electrodes formed on the second flexible substrate, the second electrodes being arranged in a second direction crossing the first direction;
• and
• an intermediate layer provided between the first flexible substrate and the second flexible substrate, the first electrodes and the second electrodes facing each other via the intermediate layer, the intermediate layer including:
• a) an insulation layer having a via hole between the first and second flexible substrate at each crossing portion of the first and second electrodes;
• b) a diode layer formed in the insulating layer, the diode layer provided on the first electrode in each via hole, the insulation layer and the diode layer forming a diode matrix layer;
• c) an anisotropic conductive film (ACF) formed on the diode matrix layer;
• and
• d) a pressure sensitive conductive layer formed on the ACF, the pressure sensitive conductive layer allowing the second electrode to be electrically connected to the diode layer via the ACF if the second flexible substrate is depressed by a biometric pattern towards the first flexible substrate at the corresponding crossing portion.

A biometric sensor panel, comprising:

• a first flexible substrate;
• a plurality of first electrodes formed on the first flexible substrate, the first electrodes being arranged in a first direction;
• a second flexible substrate;
• a plurality of second electrodes formed on the second flexible substrate, the second electrodes being arranged in a second direction crossing the first direction;
• and
• an intermediate layer provided between the first flexible substrate and the second flexible substrate, the first electrodes and the second electrodes facing each other via the intermediate layer, the intermediate layer including:
• a) a diode array formed on the first electrodes, the diode array including a plurality of vertical diode elements provided at crossing portions of the first and second electrodes;
• b) an anisotropic conductive film (ACF) formed on the diode array;
• and
• c) a pressure sensitive conductive layer formed on the ACF, the pressure sensitive conductive layer allowing the second electrode to be electrically connected to a diode element of the diode array via the ACF if the second flexible substrate is depressed by a biometric pattern towards the first flexible substrate at the corresponding crossing portion.