THRESHOLD VOLTAGE CALIBRATION AND COMPENSATION CIRCUIT FOR A DIGITAL RADIOGRAPHIC DETECTOR

摘要

A two dimensional array of digital imaging pixels each include a photo-sensing element and a readout element. A test element within the two-dimensional array, a column of test elements peripheral to the array, or test monitoring circuits peripheral to the array are constructed using the same process as the readout elements. The test element within the array and the column of test elements are connected to a first and second external voltage sources. The test element within the two-dimensional array and the column of test elements may be connected to a test data line or to a data line used by the imaging pixels.

主权项

1. A two-dimensional array of digital imaging pixels, each of the imaging pixels comprising a photo-sensing element and a readout element, and the array comprising one of a test element within the two-dimensional array, a column of test elements peripheral to the array along one side of the array, or a plurality of test monitoring circuits peripheral to the array,
wherein the test element within the array and the column of test elements each comprise a construction substantially similar to that of the readout elements in the imaging pixels, and wherein the test element within the array and the column of test elements each comprise a first terminal electrically connected to a first external voltage source and each comprise a second terminal electrically connected to a second external voltage source.