FLEXIBLE PRINTED CIRCUIT BOARD OF LARGE CAPACITY SIGNAL TRANSMISSION MEDIUM

摘要

A flexible printed circuit board for a large capacity signal transmission medium is provided to maintain constant signal transmission quality by maintaining impedance for transmitting the signal with the large capacity. A copper foil signal wiring(310) receives the signal with the large capacity from the TV main board and transmits the signal to a display device. A copper foil ground layer(320) grounds the signal with the large capacity returned from the display device. An insulating layer(330) is adhered between the copper foil signal wiring and the copper foil grounding layer. A first pad(312) and a second pad(314) of the copper foil signal wiring have the width of 80 to 110 um range. The thickness of the first pad and the second pad of the copper foil signal wiring and the copper foil ground layer is 30 to 40 um range. The thickness of the insulating layer has 20 to 30 um range.