Organic x-ray detector assembly and method of manufacturing same
AssigneeGeneral Electric Company
InventorsAaron Judy Couture, Marc Schaepkens, Abdelaziz Ikhlef
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Abstract
An x-ray detector assembly is disclosed that includes a mounting substrate having a plurality of electrical contacts, the mounting substrate comprising one of an integrated circuit and a circuit board. The x-ray detector assembly also includes a first electrode patterned on a first portion of a top surface of the mounting substrate, wherein the first electrode is electrically coupled to the plurality of electrical contacts. An organic photodiode layer is formed atop the first electrode and has a bottom surface electrically connected to the first electrode. A second electrode is coupled to a top surface of the organic photodiode layer and a scintillator is coupled to the second electrode.
Claims19
An x-ray detector assembly comprising:
- a mounting substrate comprising a plurality of electrical contacts, the mounting substrate comprising one of an integrated circuit and a circuit board;
- a first electrode patterned on a first portion of a top surface of the mounting substrate, wherein the first electrode is electrically coupled to the plurality of electrical contacts;
- an organic photodiode layer formed atop the first electrode and having a bottom surface electrically connected to the first electrode;
- a second electrode coupled to a top surface of the organic photodiode layer;
- and
- a scintillator coupled to the second electrode;
- wherein the mounting substrate comprises a flexible substrate;
- and
- wherein the bottom surface of the organic photodiode layer is formed atop a second portion of the top surface of the mounting substrate.
A method of manufacturing an x-ray detector assembly for a computed tomography (CT) system comprising:
- providing a mounting substrate, the mounting substrate comprising one of an application-specific integrated circuit (ASIC) and a circuit board;
- patterning a bottom electrode on a first portion of a top surface of the mounting substrate such that the bottom electrode is electrically coupled to electrical connections of the mounting substrate;
- coating the bottom electrode with an organic photodiode solution;
- coating a second portion of the top surface of the mounting substrate with the organic photodiode solution;
- disposing a top electrode on the organic photodiode solution;
- and
- optically coupling a scintillator array to the top electrode.
A computed tomography (CT) detector assembly comprising:
- a first detector sub-assembly comprising a rigid semiconductor photodiode substrate;
- and
- a second detector sub-assembly coupled to the first detector sub-assembly, the second detector sub-assembly comprising:
- a flexible substrate layer having a plurality of electrically conductive vias formed through a thickness thereof;
- a first electrode having a bottom surface coupled to the plurality of conductive vias;
- an organic photodiode layer having a bottom surface coupled to a top surface of the first electrode;
- a second electrode having a bottom surface coupled to a top surface of the organic photodiode layer;
- and
- a scintillator array coupled to a top surface of the second electrode;
- wherein the bottom surface of the organic photodiode layer coats a first portion of a top surface of the flexible substrate layer and a top surface of the first electrode;
- and
- wherein a portion of the bottom surface of the first electrode is coupled to a second portion of the top surface of the flexible substrate layer.
Dependencies are inferred from the claim text.