Patent ID: 11948911
Assignee: TONGFU MICROELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor packaging method, comprising:
providing a chip, wherein the chip includes:
a chip substrate having a front surface and a back surface, wherein the front surface includes a photosensitive region;
soldering pads disposed at the front surface of the chip substrate around the photosensitive region;
a metal part formed on each soldering pad; and
a transparent protective layer formed over the front surface of the chip substrate, wherein a top surface of the metal part protrudes, by a thickness, above a top surface of the transparent protective layer,

wherein providing the chip further includes:
before forming the transparent protective layer, forming a barrier layer on the top surface of the metal part; and after forming the transparent protective layer, removing the barrier layer to expose the top surface of the metal part; and

electrically connecting the metal part to a circuit board using a conductive connection part, such that the chip is electrically connected to the circuit board.