Abstract: A matrix-array detector having: an array of pixels arranged in a matrix along rows and down columns, each pixel for generating a signal according to a physical effect; a signal generator for generating two clock signals that are phase-shifted relative to one another; and a row-addressing device including a shift register, the shift register including a plurality of stages arranged in a cascade, each stage for receiving, in alternation from one stage to another, one clock signal from the two clock signals, and delivering an intermediate output signal that takes a high value and a low value allowing the pixels of the row to be activated and to be deactivated, respectively. The signal generator is also for generating a third clock signal.

Abstract: A method for controlling a matrix detector, where the detector includes a touch surface, a matrix of imaging pixels arranged in rows and in columns, and an illuminating surface. Each of the pixels has a transistor and a photodiode, where the pixels of at least one row may be activated or deactivated by an addressing device. The pixels of a same column are connected to a charge integrator capable of being powered on to read the content of a pixel when the latter is activated by the addressing device.

Abstract: A fingerprint recognition system, includes a touch surface configured so as to provide location information for at least one contact point (PCO) of a finger having a fingerprint in contact with the touch surface, wherein the system comprises: a TFT panel, arranged underneath the touch surface, comprising a detection array comprising M rows at least some of which comprise detection cells for detecting an image representative of the fingerprint, a row-addressing system being integrated into the array, and configured so as to activate, row after row, the detection cells of a corresponding row in a scanning direction of the rows, a calculation device, configured so as to receive the location information and so as to command the addressing system to address the array starting from an address range (ZA) grouping together a subset of rows from among the M rows of the array, and determined on the basis of the location information.

Abstract: A matrix-array detector having: an array of pixels arranged in a matrix along rows and down columns, each pixel for generating a signal according to a physical effect; a signal generator for generating two clock signals that are phase-shifted relative to one another; and a row-addressing device including a shift register, the shift register including a plurality of stages arranged in a cascade, each stage for receiving, in alternation from one stage to another, one clock signal from the two clock signals, and delivering an intermediate output signal that takes a high value and a low value allowing the pixels of the row to be activated and to be deactivated, respectively. The signal generator is also for generating a third clock signal.

Abstract: An electro-optical device for a matrix image sensor, has thin-film transistors and organic detectors, which integrates a line driver circuit, with thin-film transistors in a peripheral area. A light screen is provided on a topological level supported by a dielectric layer above the thin-film transistors, which are individual screens, for each pixel in a matrix area, and a general screen for all the transistors of the driver circuit. The general screen in the peripheral area is further used as an interconnection structure to bias an upper electrode of the organic photodiodes of an active area to a bias voltage, by an overlapping in direct contact. In the active area, a topological level of the upper electrode is separated from the topological level of a pixel electrode by an active organic structure. In the peripheral area, these two topological levels are present and formed directly on each other, with no interposition.

Abstract: A fingerprint recognition system, includes a touch surface configured so as to provide location information for at least one contact point (PCO) of a finger having a fingerprint in contact with the touch surface, wherein the system comprises: a TFT panel, arranged underneath the touch surface, comprising a detection array comprising M rows at least some of which comprise detection cells for detecting an image representative of the fingerprint, a row-addressing system being integrated into the array, and configured so as to activate, row after row, the detection cells of a corresponding row in a scanning direction of the rows, a calculation device, configured so as to receive the location information and so as to command the addressing system to address the array starting from an address range (ZA) grouping together a subset of rows from among the M rows of the array, and determined on the basis of the location information.

Abstract: A matrix-array detector includes an array of pixels that are sensitive to a physical effect and arranged in a matrix along rows and down columns, each pixel generating a signal according to the physical effect; row conductors, each allowing the pixels of one row to be driven; driver modules delivering selection signals to the row conductors, the driver modules being configured to deliver signals according to either of two levels, one being a high level allowing one of the rows of pixels to be selected and the other being a low level not allowing it to be selected. The detector further comprises impedance modules that are connected to each of the row conductors and configured to decrease the impedance of each row conductor and to keep the impedance of each row conductor low in a phase of reading the array of pixels as long as the corresponding selection signal is at the low level, the impedance modules being separate from the driver modules.

Abstract: A matrix-array detector includes an array of pixels that are sensitive to a physical effect and arranged in a matrix along rows and down columns, each pixel generating a signal according to the physical effect; row conductors, each allowing the pixels of one row to be driven; driver modules delivering selection signals to the row conductors, the driver modules being configured to deliver signals according to either of two levels, one being a high level allowing one of the rows of pixels to be selected and the other being a low level not allowing it to be selected. The detector further comprises impedance modules that are connected to each of the row conductors and configured to decrease the impedance of each row conductor and to keep the impedance of each row conductor low in a phase of reading the array of pixels as long as the corresponding selection signal is at the low level, the impedance modules being separate from the driver modules.

Abstract: A method is provided for controlling a light-sensitive device, for example, a digital X-ray detector including an array of light-sensitive points. The light-sensitive device includes a column conductor, line conductors, and light-sensitive points. Each light-sensitive point is connected between the column conductor and one of the line conductors, and includes a light-sensitive element converting a photon flux into electrical charges, and a transistor transferring the electrical charges to the column conductor based on control of a signal received by the corresponding line conductor. The method depends on the presence of a capacitor for cross-coupling between the drain and source of each transistor in the off state. The capacitor provides a potential variation to the column conductor upon receiving photons. The method comprises comparing the potential variation with a threshold, and reading the light-sensitive points in the event that the result of the comparison is positive.

Abstract: A device is provided for addressing the rows of an active detection matrix for imaging by ionizing radiations comprising a plurality N of rows n of pixels, the addressing device being produced on a substrate on which the matrix is also producing and mainly comprising thin film transistors of single N or P type. The row addressing device can comprise a plurality of stages suitable for delivering at their respective outputs switching signals for switching the high and low levels of a signal applied to switching devices at the output on a corresponding row of the matrix and being characterized in that each stage comprises an input stage and an output stage, the input stage delivering an activation signal for the output stage, the output stage delivering, in case of activation, said switching signal for the corresponding row n.

Abstract: A method is provided for controlling a light-sensitive device, for example, a digital X-ray detector including an array of light-sensitive points. The light-sensitive device includes a column conductor, line conductors, and light-sensitive points. Each light-sensitive point is connected between the column conductor and one of the line conductors, and includes a light-sensitive element converting a photon flux into electrical charges, and a transistor transferring the electrical charges to the column conductor based on control of a signal received by the corresponding line conductor. The method depends on the presence of a capacitor for cross-coupling between the drain and source of each transistor in the off state. The capacitor provides a potential variation to the column conductor upon receiving photons. The method comprises comparing the potential variation with a threshold, and reading the light-sensitive points in the event that the result of the comparison is positive.

Abstract: A device is provided for addressing the rows of an active detection matrix for imaging by ionizing radiations comprising a plurality N of rows n of pixels, the addressing device being produced on a substrate on which the matrix is also producing and mainly comprising thin film transistors of single N or P type. The row addressing device can comprise a plurality of stages suitable for delivering at their respective outputs switching signals for switching the high and low levels of a signal applied to switching devices at the output on a corresponding row of the matrix and being characterized in that each stage comprises an input stage and an output stage, the input stage delivering an activation signal for the output stage, the output stage delivering, in case of activation, said switching signal for the corresponding row n.