PRINTED CIRCUIT BOARD WITH EMBEDDED FUNCTION ELEMENT

• Main Authors: CHU FU HUA, WANG SHAU CHEW, MA YUN CHING
• Format: Patent
• Language: English
• Published: 27.09.2002
• Edition: 7
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

PROBLEM TO BE SOLVED: To provide an internal overcurrent protection device by which the effective area of a PCB is increased. SOLUTION: The printed circuit board(PCB) is provided with a substrate, at least one circuit layer and at least one insulating layer. The PCB is further provided with at least one embedded PTC material layer and an upper electrode and a lower electrode which are respectively on the top and on the undersurface of the PTC material layer. The upper electrode and the lower electrode are electrically connected with a device which is mounted on the surface of the PCB through a conductive hole for forming a conductive circuit.