Digital radiographic detector array including spacers and methods for same

A method of manufacturing a radiographic imaging apparatus comprising:

• forming an imaging array comprising a plurality of pixels formed on a substrate;
• forming a plurality of spacers disposed over an active surface of the imaging array, wherein the height of each spacer is greater than the height of the active surface of the imaging array, where the plurality of spacers are located in a perimeter of at least one pixel to form a pattern around the perimeter of the pixels, wherein the pattern is a non-continuous pattern or a continuous pattern around the perimeter of said each pixel, where the plurality of spacers comprise an anisotropic cross-sectional structure to provide increased first lateral movement in a first direction and increased second lateral movement in a second direction relative to vertical movement of the plurality of spacers, where the first lateral movement is different from the second lateral movement, and where both the first lateral movement and the second lateral movement separately increase along each spacer as said each spacer extends from a bottom toward a top of said each spacer;
• and
• attaching a scintillator to the plurality of spacers to reduce contact between a surface of the scintillator and the active surface of the imaging array.

A projection radiographic imaging apparatus, comprising:

• a scintillator;
• an imaging array comprising a plurality of pixels formed over a substrate;
• and
• a plurality of spacers disposed between a surface of the imaging array and the scintillator to control spacing between the surface of the imaging layer and the scintillator, where the plurality of spacers are located in a perimeter of at least one pixel to form a pattern, where a density of the spacers are configured to increase toward a center of the imaging array, where a density of first spacers in a first portion of the imaging array is gradually or tiered higher than a density of second spacers in a second portion of the imaging array, and where the density of the second spacers in the second portion of the imaging array is gradually or tiered higher than a density of third spacers in a third portion of the imaging array.