摘要:
Apparatus is provided for periodically reading image intensity information from M rows x N columns of charge storage sites (3,4) in a CID array imager. The magnitudes of signal charges collected at the sites (3,4) in response to incident radiation are sensed by a measuring circuit (7) which measures changes in potential on column lines (6) connected to (V RC ,V I ) the respective columns of sites. These changes in potential are caused by sequentially applying specific potentials (V RC ,V I ) to row lines (5) connected to the respective rows of sites to effect injection of the signal charges into the substrate of the array. The apparatus operates to minimize charge transfers within the array during readout and is thus capable of accurately determining the magnitude of signal charges in arrays fabricated from semiconductor materials having low charge transfer efficiencies. The apparatus includes means (SPS;Sv;7) for eliminating the effects of thermal (KT/C) noise from output voltages (e o ,E o ) representative of the signal charge magnitudes.
摘要:
Une rangee (10) de dispositifs de stockage de charges (11) ayant chacun une paire de condensateurs conducteurs-isolateurs-semi-conducteurs a couplage serre (12, 14, 15), un condensateur (12) connecte a la rangee (X), l'autre etant un condensateur (14, 15) connecte a la colonne (Y), est formee sur un substrat a semi-conducteur commun (21). La lecture (81, 116) des charges stockees dans une rangee de dispositifs est effectuee par transfert de la charge dans chacun des dispositifs d'une rangee de dispositifs adressee (81) dans une direction entre la cellule ou condensateur (12) connectee a la ligne de rangees (X) et les cellules ou condensateurs (14, 15) connectees a la colonne (Y) d'un dispositif en sequence (116) et par detection (71-73) du debit de courant resultant dans la ligne de rangee (X) de la rangee adressee de dispositifs. La detection du courant contribue a simplifier les circuits de lecture et de fonctionnement.
摘要:
Dispositif photosensible à transfert de ligne, du genre comportant entre chaque colonne conductrice d'une matrice photosensible et une entrée correspondante d'une mémoire de ligne, un injecteur constitué par une diode d'entrée reliée à la colonne et une grille dite de contrôle couplée à la colonne par un amplificateur de contre réaction, caractérisé par l'interposition entre ladite grille de contrôle (Gp₁) et l'entrée (G1) de la mémoire de ligne, d'au moins une grille intermédiaire (Gp₂) maintenue à une tension fixe. Une telle grille intermédiaire permet de maîtriser le régime d'écoulement des charges en réduisant le niveau de bruit attribuable à l'action de l'amplificateur.
摘要:
An array (10) of charge storage devices (11) each including a pair of closely coupled conductor-insulator-semiconductor celles (12; 14, 15), one a row line (X) connected cell (12) and the other a column line (Y) connected cell (14, 15), is provided on a common semiconductor substrate (21). Readout (81, 116) of the charges stored in a row of devices is accomplished by transferring the charge in each of the devices of an addressed (81) row of devices in one direction between the row line (X) connected cell (12) and the column line (Y) connected cells (14, 15) of a device in sequence (116) and sensing (71-73) the resultant current flow in the row line (X) of the addressed row of devices. Current sensing leads to simplified readout circuitry and operation.
摘要:
Time -resolved analysis of a spectrum is performed by illuminating a one -dimensional array of charge-transfer device light-sensitive pixel cells and periodically non-destructively copying charges in the light-sensitive cells to respective storage cells ('row storage registers') co-located with the light-sensitive cells in an integrated circuit. Information about the charges stored in at least some of the storage cells is provided to a component external to the integrated circuit.
摘要:
A charge injection device sensing an optical radiation pattern is driven with the operation sequence where the charge holding mode is inserted between the charge storing/ readout mode and charge injection mode. The charge holding period is effective for the picture elements influenced by charges injected into the substrate after readout operation to be placed far spacially and on timing and also solves the problem of crosstalk on the occasion of realizing high speed operation.
摘要:
Apparatus is provided for periodically reading image intensity information from M rows x N columns of charge storage sites (3,4) in a CID array imager. The magnitudes of signal charges collected at the sites (3,4) in response to incident radiation are sensed by a measuring circuit (7) which measures changes in potential on column lines (6) connected to (V RC ,V I ) the respective columns of sites. These changes in potential are caused by sequentially applying specific potentials (V RC ,V I ) to row lines (5) connected to the respective rows of sites to effect injection of the signal charges into the substrate of the array. The apparatus operates to minimize charge transfers within the array during readout and is thus capable of accurately determining the magnitude of signal charges in arrays fabricated from semiconductor materials having low charge transfer efficiencies. The apparatus includes means (SPS;Sv;7) for eliminating the effects of thermal (KT/C) noise from output voltages (e o ,E o ) representative of the signal charge magnitudes.
摘要:
Die Erfindung betrifft einen optoelektronischen Sensor mit mindestens einem Sensorelement nach dem Prinzip der Ladungsinjektion (CID), wobei der Oberfläche eines dotierten Halbleiterkörpers 1 zwei eng benachbarte, gegeneinander und gegenüber der Halbleiteroberfläche durch eine dünne Isolierschicht 5 isolierte, über getrennte Steuerleitungen ansteuerbare Elektroden 4,10 gegenüberstehen. Erfindungsgemäß enthält der Halbleiterkörper 1 an seiner Oberfläche unter der einen Elektrode 10 ein stärker dotiertes Gebiet 6 vom Typ der Halbleiterdotierung, das sich geringfügig in die unter der anderen Elektrode 4 liegende Halbleiteroberfläche hinein erstreckt. Dadurch wird zwischen den beiden Elektroden, z. B. einer Zeilenelektrode und einer Spaltenelektrode, eine schmale Potentialbarriere erzeugt. Wird die unter einer Elektrode optisch erzeugte Ladung unter die andere Elektrode verschoben, so verhindert diese Potentialbarriere ein Zurückfließen der Ladung unter die entleerte Elektrode. Dies ermöglicht ein floatendes Auslesen, bei dem Einkopplungen der Zeilenleitungen auf die Spaltenleitungen eliminiert werden können. Vorzugsweise verjüngt sich das stärker dotierte Gebiet 6 keilförmig unter der anderen Elektrode 4 und wird durch Implantation erzeugt, wobei als Implantationsmaske das Feldoxid und die Elektrode 4 verwendet wird, deren Kanten abgeschrägt sind (Fig. 1).