Patent application number | Description | Published |
20090039378 | LIGHT-EMITTING FILM, LIGHT-EMITTING DEVICE AND PRODUCTION METHOD THEREOF - Provided is a light-emitting film having controllable resistivity, and a high-luminance light-emitting device, which can be driven at a low voltage, using such light-emitting film. The light-emitting film includes Cu as an addition element in a zinc sulfide compound which is a base material, wherein the zinc sulfide compound includes columnar ZnS crystals, and sites formed of copper sulfide on a grain boundary where the ZnS crystals are in contact with each other. | 02-12-2009 |
20110223323 | PROCESS FOR PRODUCING SCINTILLATORS - A process for producing a scintillator including the steps of producing a CsI columnar film formed of columnar CsI crystals by a deposition method, and adding an emission center to the CsI columnar film by disposing the CsI columnar film and an emission center material in a non-contact state in a closed space, heating the CsI columnar film in the range of not less than a sublimation temperature or evaporation temperature of the emission center material and not more than a temperature at which a columnar shape of the CsI columnar film can be maintained, and heating the emission center material at a temperature of not less than a sublimation temperature or evaporation temperature thereof. | 09-15-2011 |
20120064654 | METHOD FOR PRODUCING LIGHT-EMITTING FILM AND LIGHT-EMITTING DEVICE - Provided is a light-emitting film having controllable resistivity, and a high-luminance light-emitting device, which can be driven at a low voltage, using such light-emitting film. The light-emitting film includes Cu as an addition element in a zinc sulfide compound which is a base material, wherein the zinc sulfide compound includes columnar ZnS crystals, and sites formed of copper sulfide on a grain boundary where the ZnS crystals are in contact with each other. | 03-15-2012 |
20120161074 | SCINTILLATOR MATERIAL - A scintillator material contains a compound represented by a general formula [Cs | 06-28-2012 |
20120248317 | SCINTILLATOR CRYSTAL HAVING PHASE-SEPARATED STRUCTURE - A scintillator crystal to be used for a radiation detector such as X-ray CT apparatus has a unidirectional phase-separated structure and provides a light guiding function without forming partitions to prevent any crosstalk. The scintillator crystal comprises a phase-separated structure including a plurality of first crystal phases of the columnar crystals with unidirectionality and a second crystal phase covering lateral surfaces of the first crystal phases. At least the second crystal phase comprises CuI and emits light when excited by radiation. | 10-04-2012 |
20120256093 | RADIATION DETECTING DEVICE AND METHOD OF MANUFACTURING THE SAME - A radiation detecting device is manufactured by a method that includes forming a scintillator layer on a substrate carrying a plurality of photodetectors and a plurality of convex patterns each including a plurality of convexities, the plurality of convex patterns coinciding with the respective photodetectors, the scintillator layer being formed in such a manner as to extend over the plurality of convex patterns; and forming a crack in a portion of the scintillator layer that coincides, in a stacking direction, with a gap between adjacent ones of the convex patterns by cooling the substrate carrying the scintillator layer. The plurality of convex patterns satisfy specific conditions. | 10-11-2012 |
20120292516 | SCINTILLATOR CRYSTAL BODY, METHOD FOR MANUFACTURING THE SAME, AND RADIATION DETECTOR - In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other. | 11-22-2012 |
20120312999 | RADIATION DETECTING ELEMENT - Provided is a radiation detecting element, including: needle crystal scintillators and a protruding pattern in which: one end of the needle crystal scintillators is in contact with of upper surfaces of the multiple protrusions; a gap corresponding to a gap between the multiple protrusions is provided between portions of the needle crystal scintillators in contact with the upper surfaces of the multiple protrusions; and a number of the needle crystal scintillators in contact with one of the upper surfaces is 5 or less. Conventionally, since the needle crystals exhibit a state of a polycrystalline film in an early stage of vapor deposition, and light also spreads in a horizontal direction, the light received by a photodetector portion and the spatial resolution was lower than ideal values. The present invention enables the deviating region to be the ideal state in an early stage of growth. | 12-13-2012 |
20130015357 | SCINTILLATOR HAVING PHASE SEPARATION STRUCTURE AND RADIATION DETECTOR USING THE SAMEAANM Horie; RyokoAACI Kawasaki-shiAACO JPAAGP Horie; Ryoko Kawasaki-shi JPAANM Yasui; NobuhiroAACI Yokohama-shiAACO JPAAGP Yasui; Nobuhiro Yokohama-shi JPAANM Ohashi; YoshihiroAACI TokyoAACO JPAAGP Ohashi; Yoshihiro Tokyo JPAANM Den; ToruAACI TokyoAACO JPAAGP Den; Toru Tokyo JP - Provided is a scintillator used for detecting radiation in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of partition walls for preventing crosstalks. The scintillator has the phase separation structure including: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase filling space on the side of the first crystal phase. The second crystal phase includes a material represented by Cs | 01-17-2013 |
20130341512 | POROUS SCINTILLATOR CRYSTAL - A porous scintillator crystal capable of suppressing scattering of light that represents a high spatial resolution is provided. The porous scintillator crystal comprises a porous structure including voids, wherein the porous structure is a phase-separated structure having voids formed therein and comprises materials constituting a eutectic composition of the phase-separated structure and at least one void in the porous structure extend in a direction perpendicular to a principal plane of the porous scintillator crystal. | 12-26-2013 |
20140034839 | SCINTILLATOR HAVING PHASE SEPARATION STRUCTURE AND RADIATION DETECTOR USING THE SAME - Provided is a scintillator used for detecting radiation in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of partition walls for preventing crosstalks. The scintillator has the phase separation structure including: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase filling space on the side of the first crystal phase. The second crystal phase includes a material represented by Cs | 02-06-2014 |
20140084167 | SCINTILLATOR AND RADIATION DETECTOR - Provided is a scintillator having a function of waveguiding scintillation light to a photodetector and having a structure for increasing an amount of absorption of radiation. The scintillator has a first surface and a second surface which are not located on a same surface, and includes: a first phase; and a second phase having a refractive index higher than that of the first phase and having a linear attenuation coefficient different from that of the first phase, in which one of the first phase and the second phase includes multiple columnar portions arranged in a direction from the first surface to the second surface, and the multiple columnar portions are stacked in a state in which end faces of the columnar portions are partly offset with respect to each other in a direction parallel to the first surface or the second surface. | 03-27-2014 |
20140110587 | SCINTILLATOR HAVING A PHASE SEPARATION STRUCTURE AND RADIATION DETECTOR USING THE SAME - Provided is a scintillator used for radiation detection in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of banks for preventing crosstalk. The scintillator has a waveguide function instead of the banks or the like. The scintillator includes: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase for covering a side of the first crystal phase. The first crystal phase includes a perovskite type oxide material including at least one element selected from the group consisting of Lu and Gd, and a rare earth element as an emission center. The first crystal phase emits light by radiation excitation. | 04-24-2014 |
20140319362 | SCINTILLATOR CRYSTAL BODY, METHOD FOR MANUFACTURING THE SAME, AND RADIATION DETECTOR - In a scintillator used for radiation detection, such as an X-ray CT scanner, a scintillation crystal body having a unidirectional phase separation structure is provided which has a light guide function for crosstalk prevention without using partitions. The phase separation structure includes a first crystal phase and a second crystal phase having a refractive index larger than that of the first crystal phase and which have a first principal surface and a second principal surface, these principal surfaces being not located on the same plane, the first principal surface and the second principal surface have portions to which the second crystal phase is exposed, and a portion of the second crystal phase exposed to the first principal surface and a portion of the second crystal phase exposed to the second principal surface are connected to each other. | 10-30-2014 |