Radiation Detector Electrode Layout for High-Density CT Tiling

The patent applies local quality by providing a cathode electrode only on specific side surfaces (first and second side surfaces) of the single-crystal semiconductor substrate, while omitting it from other side surfaces (third and fourth side surfaces). This localized electrode arrangement improves charge collection efficiency at critical regions where electric field weakening occurs, while avoiding unnecessary size increase from electrodes on all sides. The selective placement of electrodes based on local field distribution characteristics resolves the contradiction between improving charge collection and minimizing element size.

The patent changes the electrode configuration parameter by selectively providing cathode electrodes on only two opposite side surfaces rather than all four side surfaces. This parameter modification allows multiple radiation detection elements to be arranged in a planar manner with reduced overall size, enabling higher element density in a given area. The optimized electrode arrangement maintains sufficient charge collection efficiency while reducing the space each element occupies, thereby preserving resolving power even as total detection area increases through multi-element arrangement.