PRINTED CIRCUIT BOARD ASSEMBLY WITH IMAGE SENSOR MOUNTED THEREON

摘要

A printed circuit board assembly (PCBA) and a method to assemble the PCBA are disclosed. The PCBA includes a printed circuit board (PCB), an image sensing chip and a protection layer. The PCB includes a first insulation layer, a second insulation layer, a first electrically conductive layer, a second electrically conductive layer, and a third electrically conductive layer. The image sensing chip has a number of bonding pads with a sensor portion facing down through the second opening. The PCBA can function as an image sensing module and make the module have the thinnest thickness.

主权项

1. A printed circuit board assembly (PCBA), comprising:
a printed circuit board (PCB), comprising:
a first insulation layer having a first opening formed therein;a second insulation layer having a second opening formed therein;a first electrically conductive layer, formed a specific circuit on partial of a top surface of the first insulation layer;a second electrically conductive layer, formed another specific circuit and a plurality of connectors between the first insulation layer and the second insulation layer; anda third electrically conductive layer, formed still another specific circuit on partial of a bottom surface of the second insulation layer,wherein the second opening is smaller than the first opening and formed beneath the first opening; a platform is formed on a top surface of the second insulation layer enclosed by peripherals of the first opening; the plurality of connectors are formed on the platform; and an image sensing chip, having a plurality of bonding pads with a sensor portion facing down through the second opening, and fixed on the platform with each bonding pad connected to one corresponding connector.