Patent Number: 
Section: claims

1. A multi element solid state X-ray detection device comprising: an X-ray detection element array which includes an array of photo diodes for multi channels arranged with a predetermined pitch on a substrate, a plurality of scintillators each being adhered onto the respective photo diodes for every channel and isolation walls disposed between the neighboring scintillators for respective channels, wherein an isolation band for isolating the respective channels is provided between respective light receiving portions of the photo diode array for the multi channels, and the surface of the isolation band is covered by a material having light absorbing property. 2. A multi element solid state X-ray detection device according to  claim 1 , wherein the width of the region which is covered by the material having light absorbing property is equal to a region occupied by the width of the isolation wall provided between the neighboring scintillators for the respective channels, smaller than a width region of respective scintillators including the corresponding isolation walls not contributing to X-ray detection, or larger than the thickness of the adhesive layer adhering the photo diode array and the scintillators for every channel. claim 1 3. A multi element solid state X-ray detection device according to  claim 2 , further comprises a reflection preventing film formed on the surface of the respective light receiving portions of the photo diode array, and wherein the refractive index of the adhesive layer adhering the photo diode array and the scintillators is determined smaller than the refractive index of the scintillators and the refractive index of the reflection preventing film. claim 2 4. An X-ray CT apparatus which uses the multi element solid state X-ray detection device according to  claim 1 . claim 1 5. An X-ray CT apparatus which uses the multi element solid state X-ray detection device according to  claim 2 . claim 2 6. An X-ray CT apparatus which uses the multi element solid state X-ray detection device according to  claim 3 . claim 3 7. An X-ray detection device comprising: a silicon photo diode array which includes a plurality of light receiving portions arranged on a substrate along both channel direction and slice direction perpendicular to the channel direction with a predetermined pitch and an isolation band with a predetermined width which separates respective neighboring light receiving portions;  a scintillator which is optically coupled with each of the respective light receiving portions via a adhesive layer;  an isolation wall which is disposed between respective neighboring scintillators so as to oppose to the corresponding isolation band on the silicon photo diode array; and  a light absorbing film which covers a portion on the isolation band on the silicon photo diode array opposing to the isolation wall with a width not more than the width of the isolation wall. 8. An X-ray detection device according to  claim 7 , wherein the predetermined width of the isolation band is determined larger than the width of the isolation wall. claim 7 9. An X-ray detection device according to  claim 8 , wherein both end portions on the isolation band not covered by the light absorbing film are respectively covered by a light reflecting film. claim 8 10. An X-ray detection device according to  claim 7 , further comprises a reflection preventing film formed on the surface of the respective light receiving portions of the silicon photo diode array, and wherein the refractive index of the adhesive layer adhering the silicon photo diode array and the scintillators is determined smaller than the refractive index of the scintillators and the refractive index of the reflection preventing film. claim 7 11. An X-ray detection device according to  claim 7 , further comprises a plurality of signal taking out leads for respective silicon photo diodes in the silicon photo diode array are wired in the isolation band. claim 7 12. An X-ray detection device according to  claim 7 , further comprises a light shielding and reflecting film is disposed beneath the light absorbing film on the isolation band. claim 7 13. An X-ray detection device according to  claim 7 , wherein the thickness of the adhesive layer is determined less than xc2xd of the width of the isolation wall. claim 7 14. An X-ray detection device comprising, an X-ray detection element array including a plurality of X-ray detection elements which are arranged on a substrate along both channel direction and slice direction perpendicular to the channel direction with a predetermined pitch; and a reflection plate which is disposed over an upper face of the X-ray detection element array at an X-ray incident side, wherein the X-ray detection element array is constituted by:  a silicon photo diode array which includes a plurality of silicon photo diode elements having light receiving portion arranged on the substrate along both channel direction and slice direction perpendicular to the channel direction with a predetermined pitch and an isolation band with a predetermined width which electrically separate respective neighboring silicon photo diode elements;  a scintillator which is optically coupled with each light receiving portion of the respective silicon photo diode elements;  an isolation wall for optically separating the neighboring scintillators which is disposed between respective neighboring scintillators so as to oppose to the corresponding isolation band on the silicon photo diode array;  an adhesive layer which adheres the respective scintillators and isolation walls at predetermined positions on the silicon photo diode array; and  a light absorbing film which covers a portion on the isolation band on the silicon photo diode array opposing to the isolation wall with a width not more than the width of the isolation wall.