Discontinuous Semiconductor Bonding for Low-Stress Singulation

The bonding material is divided into multiple discrete bond sections rather than forming a continuous layer. Each bond section independently bonds the device substrate to the carrier substrate at specific locations, distributing mechanical stress across multiple discrete points rather than creating uniform stress across a continuous bonding interface. This segmentation reduces overall mechanical stress while maintaining adequate bonding strength through the distributed bond sections.

By segmenting the bonding material into discrete sections, the patent prevents the uniform stress distribution that causes substrate warping and delamination. Each discrete bond section creates localized bonding points that do not collectively induce the bending moments and stress concentrations that occur with continuous bonding, thereby maintaining substrate stability while achieving adequate bonding strength.

The patent extracts or removes the bonding material from the singulation path by positioning discrete bond sections away from the intended singulation lines. This allows singulation to proceed through the substrate alone without having to cut through bonding material, significantly simplifying the singulation process and reducing the stresses associated with cutting through multiple material layers.

The discrete bond sections distribute mechanical stress across multiple localized points rather than creating uniform stress across the entire substrate surface. This stress distribution mechanism enables the use of larger substrates for improved manufacturing efficiency and yield, as the segmented bonding approach prevents the cumulative stress and warping that would otherwise occur with continuous bonding over large substrate areas.