公开(公告)号：DE50015545D1

公开(公告)日：2009-03-19

申请号：DE50015545

申请日：2000-06-02

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： BRAUERS ANDREAS ,  SCHIEBEL ULRICH

IPC: G01T1/24 ,  H01L27/146 ,  G01T1/29 ,  H01L27/14 ,  H01L31/0216 ,  H01L31/0224 ,  H01L31/08 ,  H01L31/09 ,  H01L31/115 ,  H04N5/32 ,  H04N5/335

Abstract: The sensor has a reference electrode and a number of sensor elements, whereby each sensor element contains a collection electrode and a photoconductor structure arranged between the reference electrode and the collection electrode and a switching element connecting the collection electrode to a readout line. The sensor elements are arranged in a matrix with n rows and m columns, where m is greater than one. The matrix has a guard electrode frame (9) arranged between the readout line (5) and photoconductor structure (6) of the sensor elements (21) forming the edge of the matrix and extending out over the edge of the photoconductor structure An Independent claim is also included for an x-ray investigation device.

公开(公告)号：DE69833848T2

公开(公告)日：2006-11-23

申请号：DE69833848

申请日：1998-01-05

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

Inventor： WIECZOREK K ,  CONRADS NORBERT ,  SCHIEBEL ULRICH

IPC: H04N3/15 ,  H04N5/32 ,  G01T1/24 ,  G01T1/29 ,  H01L27/146 ,  H04N5/335

Abstract: A medical X-ray apparatus is provided with image detector elements 30 which are arranged in a matrix of rows and columns. In order to improve the noise behaviour of the read amplifiers 46 during the reading per row, a plurality of column conductors 36 is provided per column so that the read time is prolonged in proportion to the number of column conductors and the stray capacitance is reduced proportionally. Both steps reduce the noise in known manner. In the case of an integrated implementation, the conductors for driving the reading per row cannot be arranged arbitrarily close to one another because of their mutual capacitance, so that these conductors require a comparatively large surface area. In order to make a smaller surface area suffice for these conductors, according to the invention each read driver 42 is connected to at least two rows of image detector elements 30 which are not associated with the same column conductor, the number of rows thus connected to one read driver being at the most equal to the number of groups of image detector elements in one column.

公开(公告)号：DE69637638D1

公开(公告)日：2008-09-25

申请号：DE69637638

申请日：1996-09-02

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

Inventor： BRAUERS ANDREAS ,  SCHIEBEL ULRICH

IPC: G01T1/00 ,  H01L31/115 ,  G01T1/24 ,  G01T1/29 ,  H01L27/14 ,  H01L27/146

Abstract: An x-ray image sensor (1) with a lead-oxide photoconductor layer (6) positioned between collecting electrodes (3) and a common electrode (2) is provided with a passivation layer (7) which separates the lead-oxide from the metal of the common electrode to counteract degradation of the photoconductor layer due to chemical reactions between then metal of the common electrode and the lead-oxide. A bias layer (8) is provided between the common electrode (2) and the photoconductor layer (6) and a cladding layer (9) is provided between collecting electrodes (3) and the photoconductor layer (6) so as to avoid injection of charges into the photoconductor layer.

公开(公告)号：DE69833848D1

公开(公告)日：2006-05-11

申请号：DE69833848

申请日：1998-01-05

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

Inventor： WIECZOREK K ,  CONRADS NORBERT ,  SCHIEBEL ULRICH

IPC: H04N3/15 ,  H04N5/32 ,  G01T1/24 ,  G01T1/29 ,  H01L27/146 ,  H04N5/335

Abstract: A medical X-ray apparatus is provided with image detector elements 30 which are arranged in a matrix of rows and columns. In order to improve the noise behaviour of the read amplifiers 46 during the reading per row, a plurality of column conductors 36 is provided per column so that the read time is prolonged in proportion to the number of column conductors and the stray capacitance is reduced proportionally. Both steps reduce the noise in known manner. In the case of an integrated implementation, the conductors for driving the reading per row cannot be arranged arbitrarily close to one another because of their mutual capacitance, so that these conductors require a comparatively large surface area. In order to make a smaller surface area suffice for these conductors, according to the invention each read driver 42 is connected to at least two rows of image detector elements 30 which are not associated with the same column conductor, the number of rows thus connected to one read driver being at the most equal to the number of groups of image detector elements in one column.