Stress mitigation in organic laminates

• Main Authors: Park, Soojae, Sri-Jayantha, Sri M
• Format: Patent
• Language: English
• Published: 26.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The substrate includes one or more bottom circuit (BC) layers disposed one upon another and one or more front circuit (FC) layers disposed one upon another. The FC layers are disposed on the BC layers. In some embodiments, there are one or more core layers disposed between the FC and BC layers.One or more soft zones are located within and penetrate through one or more of the FC layers. Each soft zone has a soft zone volume which is made of one or more component volumes located in each of one or more of the FC layers. Each soft zone component volume has a soft zone cross sectional area. The soft zone cross sectional areas are located inside a chip boundary projection. The chip boundary projection is a vertical projection of one or more sides of a semiconductor chip through the FC layers. The soft zone volume contains a soft zone material with a Young's modulus that is less than 100 GigaPascals (GPa). Alternative embodiments are presented with outside soft zones outside the chip boundary projection.