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

Claim 1:
2. The method according to claim 1, wherein providing the chip includes:
providing a wafer, wherein the wafer includes a plurality of chip substrates arranged in a matrix and separated by dicing grooves between adjacent chip substrates, and the soldering pads are formed at the front surface of each chip substrate and surrounding a corresponding photosensitive region of each chip substrate;
forming the metal part on each soldering pad facing away from the chip substrate;
forming the transparent protective layer on the front surface of the chip substrate, wherein the transparent protective layer covers the photosensitive region, a height between the transparent protective layer and the front surface of the chip substrate is less than a height between the top surface of the metal part and the front surface of the chip substrate, and the top surface of the metal part is exposed over the top surface of the transparent protective layer; and
performing a cutting process along the dicing grooves of the wafer, thereby removing a portion of the wafer and a portion of the transparent protective layer that correspond to the dicing grooves to provide a plurality of single chips.