Lsi Logic Corporation

Hiroshi Ishikawa

Bo Shen

Prasad Subbarao

Radoslav Ratchkov

Thomas Mathews Antisseril

Anwar Ali

Benjamin Mbouombouo

Maad A Al-Dabagh

Ruben Salvador Molina

A multiple layer power mesh design includes an L-shaped structure and a bow tie-shaped structure. The L-shaped structure provides a plurality of L-shaped power rails in each of four quadrants of the layer. The bow tie-shaped structure includes plurality of vertical power rails in each of a left and right triangularly-shaped portion of the layer. The vertical power rails of the bow tie-shaped structure provide and interface between the upper and lower quadrants of the L-shaped layer. The bow tie-shaped structure provides additional available space which can, for example, be used for routing signal traces. A T-shaped structure is also provided for use with the bow tie-shaped layer. The T-shaped layer provides for improved distances between the VDD and the VSS power rails.

Bowtie and T-shaped structures of L-shaped mesh implementation

A multiple layer mesh design which includes a layer which provides a vertical mesh and an adjacent layer which provides a horizontal mesh which includes an open area or hole. The layer which provides the horizontal mesh (with hole) may either be above or below the vertical mesh layer, depending on the design. The vertical mesh may be full or may surround an open area or hole where the design includes both a horizontal donut mesh and a vertical donut mesh.

Donut power mesh scheme for flip chip package

Growing community of inventors

Los Gatos, CA, United States of America

Hiroshi Ishikawa