The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2002
Filed:
May. 28, 1999
Akira Ishikawa, Royce City, TX (US);
Nabuo Takeda, Richardson, TX (US);
Suzanne I. Ahn, Dallas, TX (US);
Steven R. Hays, Dallas, TX (US);
Alex Freeman, Plano, TX (US);
Ball Semiconductor, Inc., Allen, TX (US);
Abstract
A solid state X-ray detector ( ) is disclosed which is comprised of a plurality of Spherical ICs ( )-( ) disposed on a substrate (210). The Spherical ICs each have a plurality of detector picture elements (pixels) ( ) disposed on the surface thereof. Each of the pixels ( ) is formed from a layer of hydrogenated amorphous silicon ( ) with a heavy metal layer ( ) of molybdenum (Mo) disposed thereon as the cathode and a metal layer ( ) disposed on the lower surface thereof. The cathode is reverse biased and X-rays impinging thereon will cause a transfer of electron-holes to the lower plate, which are stored on a capacitor ( ). The electrons are accumulated over a predetermined period of time and then sampled and processed for output on a display ( ) in real time or for storage of a digital value in a memory ( ).