Patent ID: 9536706
Date: 2017-01-03
CPC Classifications: G03F,H01J,H01L

Claim:
1. A dynamic pattern generator device for modulating at least one electron beam used for electron-beam imaging or direct-write lithography, the device comprising: a substrate, a plurality of alternating high resistivity material and highly electrically conducting layers deposited on the substrate, a plurality of pixels forming an array of pixels for modulating electron beams, each pixel being a cylindrical-shaped trench formed in the plurality of alternating high resistivity material and highly electrically conducting layers deposited on the substrate and having an electrode in the form of a highly electrically conductive pad at the bottom of the trench, a plurality of inter-trench separating walls located between the plurality of pixels, and wherein the size of the active device area and the number of pixels forming the array of pixels in the active device area determines a number of electron beams that can be modulated by the dynamic pattern generator device and thereby a rate of electron-beam imaging or direct writing rate of the dynamic pattern generator device, and wherein the high resistivity material layers eliminate a need for a charge dissipating coating on interior surfaces of the pixels in the device to prevent a build-up of electrical charge from incoming electrons on insulating surfaces in the pixels, the highly electrically conducting layers being formed from materials selected from metals, conductive semiconductor materials and conductive ceramic materials, the high resistivity material being formed from non-metal materials, including semiconductor materials.