Advanced micro devices, inc. (20250112047). CHIP-ON-WAFER FACE-TO-BACK HYBRID BONDING WITHOUT SUPPORT CARRIER
CHIP-ON-WAFER FACE-TO-BACK HYBRID BONDING WITHOUT SUPPORT CARRIER
Organization Name
Inventor(s)
Chandra Sekhar Mandalapu of Ft. Collins CO US
Raja Swaminathan of Austin TX US
CHIP-ON-WAFER FACE-TO-BACK HYBRID BONDING WITHOUT SUPPORT CARRIER
This abstract first appeared for US patent application 20250112047 titled 'CHIP-ON-WAFER FACE-TO-BACK HYBRID BONDING WITHOUT SUPPORT CARRIER
Original Abstract Submitted
a hybrid bonding method includes fabricating plural semiconductor devices in a region of a bottom wafer adjacent to a front surface thereof, fusion bonding the front surface to a carrier substrate, thinning the bottom wafer opposite to the front surface to expose conductive regions of the semiconductor devices, forming a dielectric layer over a backside of the semiconductor devices, forming openings in the dielectric layer to expose the conductive regions, forming metal pads within the openings, dicing the bottom wafer and the carrier substrate to singulate the plural semiconductor devices, bonding the dielectric layer overlying the backside of the semiconductor devices to a dielectric layer overlying a front surface of a top wafer, bonding the metal pads within the openings in the dielectric layer to metal pads overlying the front surface of the top wafer, and removing the carrier substrate from the front surface of the bottom wafer.