Backplate Heat Dissipation Extension for Corner Stress Reduction

The patent applies local quality by adding heat dissipation extension portions specifically at the corner regions of the backplate, rather than uniformly throughout. These extensions are localized at positions where stress concentration occurs, providing enhanced heat dissipation precisely where needed to address the uneven temperature distribution while maintaining the overall hollow structure's weight advantages.

The patent transitions from a two-dimensional hollow backplate structure to a three-dimensional structure by adding heat dissipation extension portions that protrude from the backplate surface. This dimensional enhancement creates additional heat dissipation pathways without significantly increasing weight, as the extensions are strategically placed only at corner regions rather than covering the entire backplate area.

The patent maintains structural simplicity by applying heat dissipation enhancements only locally at the corner regions rather than uniformly across the entire backplate. This selective approach improves heat dissipation uniformity where it is most needed while avoiding the complexity increase that would result from adding similar features across the whole structure.

The backplate structure is segmented into functional zones: the main hollow backplate body for weight reduction and the localized heat dissipation extension portions at corners for thermal management. This segmentation allows each part to perform its specific function optimally while keeping the overall structure relatively simple and manageable.