Sensor with a guard electrode

US6363135B1 · kind B1 · utility

Assignee

• U.S. Philips Corporation · US

Inventors

• Andreas Brauers · Aachen, DE
• Ulrich Schiebel · Aachen, DE

Key dates

• Filing date: Jun 8, 2000
• Grant date: Mar 26, 2002
• Expiry date: Jun 8, 2020

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/803

Abstract

The invention relates to a sensor which includes a reference electrode as well as a plurality of sensor elements, each sensor element including a collector electrode and a photoconductor structure which is arranged between the reference electrode and the collector electrodes, as well as a switching element which connects the collector electrode to a read-out lead, the sensor elements being arranged in a matrix of n rows and m columns, where n, m are larger than 1. Correct operation of even the sensor elements in the edge zone of the matrix is achieved, irrespective of the construction of the edge of the photoconductor structure and the reference electrode, in that the matrix is provided with a guard electrode window (9) which is arranged between the read-out lead (5) and the photoconductor structure (6) of the sensor elements (21) constituting the edge of the matrix and extends beyond the edge of the photoconductor structure (6).