Light Emitting Device Substrate Holder Pitch Control

The invention divides the support structure into two independent parts: the substrate and the substrate holder. The substrate holder (including columns and protrusions) is separated from the substrate, allowing each component to be optimized independently. This segmentation enables the substrate to maintain its inherent thickness accuracy while the substrate holder defines the pitch through its column structure, resolving the contradiction between reduced pitch and maintained manufacturing precision.

The substrate holder acts as an intermediary component between substrates, providing the structural framework for pitch definition through its columns. Instead of relying on substrate thickness to determine pitch, the substrate holder's column structure serves as the mediating element that establishes precise spacing, thereby decoupling pitch control from substrate thickness constraints.

By separating the substrate from the substrate holder, the invention allows the substrate holder to serve as the primary reference for stacking accuracy. The columns and protrusions of the substrate holder provide stable, thick structural elements that maintain positional precision during stacking, while the substrate itself can be thinner without compromising overall stacking accuracy.

The substrate holder is prepared in advance with precisely positioned columns and protrusions that define the stacking geometry. This preliminary structuring establishes the pitch and alignment references before substrate mounting, ensuring that stacking accuracy is determined by the pre-fabricated substrate holder rather than by the substrate thickness.