LED Device with Differently Slanted Side Surfaces

The patent applies different slant angles to different regions of the LED element side surfaces. The inner face (facing adjacent elements) has a gentler slant angle to maintain light emitting area, while the outer face has a steeper slant angle to prevent interconnection line disconnection. This local differentiation resolves the contradiction by optimizing each region for its specific function.

By applying gentler slant angles to the inner face regions where light emission occurs, the patent maintains larger light emitting areas that reduce forward voltage. The steeper slant angles are applied only to outer face regions where mechanical support is needed, thus preventing disconnection without unnecessarily increasing forward voltage across the entire element.

The patent strategically applies gentler slant angles to inner faces to maximize light emitting area and light output, while applying steeper slant angles to outer faces to provide mechanical support and prevent interconnection line disconnection. This spatial differentiation of slant angles resolves the contradiction between light output and connection reliability.

The patent implements different slant angles for inner and outer faces through a systematic approach where the isolation trench formation process creates the gentler inner face angles, and the outer face angles are determined by the dicing saw blade thickness. This structured implementation achieves the benefits of differentiated angles while maintaining manufacturing feasibility and controlling device complexity.