CN103646681A - Cesium iodide scintillation screen structure - Google Patents
Cesium iodide scintillation screen structure Download PDFInfo
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- CN103646681A CN103646681A CN201310568284.XA CN201310568284A CN103646681A CN 103646681 A CN103646681 A CN 103646681A CN 201310568284 A CN201310568284 A CN 201310568284A CN 103646681 A CN103646681 A CN 103646681A
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- Prior art keywords
- cesium iodide
- screen structure
- scintillation screen
- adhesive tape
- transparency carrier
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Abstract
The invention relates to a cesium iodide scintillation screen structure. The cesium iodide scintillation screen structure comprises: a transparent substrate, a cesium iodide scintillator layer deposited on the transparent substrate, a waterproof film adhesive tape stitched on the upper surface of the cesium iodide scintillator layer, and a protective cover plate fixed above the waterproof film adhesive tape, wherein the peripheral edge of the cesium iodide scintillator layer is provided with a sealant, the lower surface of the sealant is attached to the transparent substrate, and the upper surface of the sealant is attached to the waterproof film adhesive tape. Through such a mode, the cesium iodide scintillation screen structure can realize water blocking and waterproofing effects, substantially reduces scintillator packaging cost, and improves packaging efficiency.
Description
Technical field
The present invention relates to the technical field of film material with function, more particularly, the present invention relates to a kind of cesium iodide scintillation screen structure.
Background technology
Inorganic scintillator (inorganic scintillator) plays very important effect in radiation detection, is widely used in the fields such as nuclear medical imaging, nuclear physics, high-energy physics, industry CT, oil well exploration and safety inspection.Studying at present and apply maximum is inorganic scintillator, and this wherein there is high brightness, high-resolution caesium iodide scintillator is most widely used.But cesium iodide material is hygroscopic materials, when it absorbs airborne moisture and during deliquescence, can make the characteristic, particularly image resolution ratio of scintillator greatly reduce, therefore, how effectively to encapsulate scintillator more particularly important.And the technique of different its encapsulation of substrate is not identical yet.
At present, as representational caesium iodide scintillator, be to take material with carbon element as the substrate caesium iodide scintillator of growing, the plated film method for packing that packaged type is Hamamatsu Photonics Co., Ltd, if patent is the method for packing that WO99/66348, WO02/23219 and JP170092/1998 announced.The parylene layer that first this caesium iodide scintillator packaged type is 10um by CVD method at cesium iodide plated surface thick layer, the then SiO of sputter one deck 200nm
2film, last CVD method forms one deck 10um parylene layer.
Yet, utilize CVD method evaporation parylene film and sputter SiO
2layer is as being used for making scintillator to avoid the damp proof barrier of influence of moisture, and two kinds of equipment of minimum needs are that CVD equipment and sputtering equipment complete whole encapsulation process, visible, and this method for packing exists the problem that flow process is complicated, production cost is high.Meanwhile, utilize the method for evaporation to encapsulate, must process mask plate protection does not need the place being capped, and as connecting pin etc., has so greatly increased the complexity of technique.And be approximately 100 to 2000 A/min of clocks by the speed that CVD method forms the organic film protective seam of Parylene; therefore the scintillator protective seam that forms 20um needs 2000 minutes to 100 minutes, and this existing encapsulation technology exists the problem that throughput rate is lower.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of cesium iodide scintillation screen structure, can realize the effect of the waterproof that blocks water, and can also greatly reduce the packaging cost of scintillator, improves packaging efficiency.
For solving the problems of the technologies described above; the technical scheme that the present invention adopts is: a kind of cesium iodide scintillation screen structure is provided; comprise: transparency carrier, the cover sheet that is deposited on caesium iodide scintillator layer on described transparency carrier, is pressed together on the waterproofing membrane adhesive tape of described caesium iodide scintillator layer upper surface and is fixed on described waterproofing membrane adhesive tape top; the edge of described caesium iodide scintillator layer is provided with fluid sealant; the lower surface of described fluid sealant and described transparency carrier fit, and upper surface and described waterproofing membrane adhesive tape fit.
In a preferred embodiment of the present invention, the material of described transparency carrier is macromolecular material or inorganic material.
In a preferred embodiment of the present invention, the material of described transparency carrier is glass.
In a preferred embodiment of the present invention, described cover sheet is carbon fiber board or plastic plate.
In a preferred embodiment of the present invention, described waterproofing membrane adhesive tape comprises metal film upper strata and pressure-sensitive glue lower floor.
In a preferred embodiment of the present invention, described metal film upper strata is aluminum membranous layer, and described pressure-sensitive glue lower floor is oiliness pressure-sensitive glue layer.
In a preferred embodiment of the present invention, the thickness of described waterproofing membrane adhesive tape is less than 0.3mm.
In a preferred embodiment of the present invention, the thickness of described transparency carrier is 0.5-3mm.
In a preferred embodiment of the present invention, the thickness of described caesium iodide scintillator layer is 0.2-0.8 mm.
The invention has the beneficial effects as follows: adopt visible light transmissivity to be more than or equal to 80%, moisture-vapor transmission is less than or equal to 0.1g/m
2day
-1material as transparency carrier material, adopt moisture-vapor transmission to be less than or equal to 0.1g/m simultaneously
2day
-1lower surface reflecting rate is more than or equal to 80% waterproofing membrane adhesive tape, the cesium iodide thick film of doping thallium iodide, as caesium iodide scintillator layer, can be converted into visible ray by X ray, and in the edge of caesium iodide scintillator layer, moisture-vapor transmission is set and be less than or equal to 0.1g/m
2day
-1fluid sealant, can realize the effect of the waterproof that blocks water, can also greatly reduce the packaging cost of scintillator, improve packaging efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of cesium iodide scintillation screen of the present invention structure one preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, cover sheet, 2, waterproofing membrane adhesive tape, 3, caesium iodide scintillator layer, 4, fluid sealant, 5, transparency carrier.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Refer to Fig. 1, the embodiment of the present invention comprises:
A kind of cesium iodide scintillation screen structure; comprise: transparency carrier 5, be deposited on the caesium iodide scintillator layer 3 on described transparency carrier 5, the cover sheet 1 that is pressed together on the waterproofing membrane adhesive tape 2 of described caesium iodide scintillator layer 3 upper surface and is fixed on described waterproofing membrane adhesive tape 2 tops; the edge of described caesium iodide scintillator layer 3 is provided with fluid sealant 4; the lower surface of described fluid sealant 4 and described transparency carrier 5 fit, and upper surface and described waterproofing membrane adhesive tape 2 fit.
Wherein, the material of described transparency carrier 5 is macromolecular material or inorganic material, in the present embodiment, is preferably glass.And the thickness of described transparency carrier 5 is 0.5-3mm, and its visible light transmissivity is more than or equal to 80%, and moisture-vapor transmission is less than or equal to 0.1g/m
2day
-1.
Described cover sheet 1 is carbon fiber board or plastic plate.These cover sheet 1 the superiors in cesium iodide scintillation screen, are not scratched, damage mainly for the protection of cesium iodide scintillation screen and packaging film surface.
Described waterproofing membrane adhesive tape 2 comprises metal film upper strata and pressure-sensitive glue lower floor.In the present embodiment, described metal film upper strata is aluminum membranous layer, fits with described cover sheet 1, and described pressure-sensitive glue lower floor is oiliness pressure-sensitive glue layer, fits with described caesium iodide scintillator layer 3.The moisture-vapor transmission of this waterproofing membrane adhesive tape 4 is less than or equal to 0.1g/m
2day
-1, thickness is less than 0.3mm, and lower surface reflecting rate is more than or equal to 80%, and the surface of lower surface for contacting with caesium iodide scintillator layer 3.
The thickness of described caesium iodide scintillator layer 3 is 0.2-0.8 mm, is X ray to be converted into the cesium iodide thick film of the doping thallium iodide of visible ray.
The moisture-vapor transmission of described fluid sealant 4 is less than or equal to 0.1g/m
2day
-1.
During encapsulation, first, on described transparency carrier 5, utilize vacuum evaporation mode, growth one deck caesium iodide scintillator layer 3; Then, in the edge of described caesium iodide scintillator layer 3, place fluid sealant 4, the lower surface of fluid sealant 4 and the upper surface of described transparency carrier 5 are fitted; Then, under vacuum environment, at upper surface pressing one deck waterproofing membrane adhesive tape 2 of described caesium iodide scintillator layer 3; Then, solidify or hot sealing glue 4, the lower surface of fluid sealant 4 and the upper surface of described transparency carrier 5 are fitted, and the upper surface of described fluid sealant 4 and described waterproofing membrane adhesive tape 2 fit, and the surrounding of described fluid sealant 4 all fits with described caesium iodide scintillator layer 3; Finally, on described waterproofing membrane adhesive tape 2, place and fixing cover sheet 1, make to protect cesium iodide scintillation screen and encapsulation waterproofing membrane tape surface to be difficult for being scratched, damaging.
The present invention has disclosed a kind of cesium iodide scintillation screen structure, adopts visible light transmissivity to be more than or equal to 80%, and moisture-vapor transmission is less than or equal to 0.1g/m
2day
-1material as transparency carrier material, adopt moisture-vapor transmission to be less than or equal to 0.1g/m simultaneously
2day
-1lower surface reflecting rate is more than or equal to 80% waterproofing membrane adhesive tape, the cesium iodide thick film of doping thallium iodide, as caesium iodide scintillator layer, can be converted into visible ray by X ray, and in the edge of caesium iodide scintillator layer, moisture-vapor transmission is set and be less than or equal to 0.1g/m
2day
-1fluid sealant, can realize the effect of the waterproof that blocks water, can also greatly reduce the packaging cost of scintillator, improve packaging efficiency.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a cesium iodide scintillation screen structure; it is characterized in that; comprise: transparency carrier, the cover sheet that is deposited on caesium iodide scintillator layer on described transparency carrier, is pressed together on the waterproofing membrane adhesive tape of described caesium iodide scintillator layer upper surface and is fixed on described waterproofing membrane adhesive tape top; the edge of described caesium iodide scintillator layer is provided with fluid sealant; the lower surface of described fluid sealant and described transparency carrier fit, and upper surface and described waterproofing membrane adhesive tape fit.
2. cesium iodide scintillation screen structure according to claim 1, is characterized in that, the material of described transparency carrier is macromolecular material or inorganic material.
3. cesium iodide scintillation screen structure according to claim 2, is characterized in that, the material of described transparency carrier is glass.
4. cesium iodide scintillation screen structure according to claim 1, is characterized in that, described cover sheet is carbon fiber board or plastic plate.
5. cesium iodide scintillation screen structure according to claim 1, is characterized in that, described waterproofing membrane adhesive tape comprises metal film upper strata and pressure-sensitive glue lower floor.
6. cesium iodide scintillation screen structure according to claim 5, is characterized in that, described metal film upper strata is aluminum membranous layer, and described pressure-sensitive glue lower floor is oiliness pressure-sensitive glue layer.
7. cesium iodide scintillation screen structure according to claim 5, is characterized in that, the thickness of described waterproofing membrane adhesive tape is less than 0.3mm.
8. cesium iodide scintillation screen structure according to claim 1, is characterized in that, the thickness of described transparency carrier is 0.5-3mm.
9. cesium iodide scintillation screen structure according to claim 1, is characterized in that, the thickness of described caesium iodide scintillator layer is 0.2-0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310568284.XA CN103646681A (en) | 2013-11-13 | 2013-11-13 | Cesium iodide scintillation screen structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310568284.XA CN103646681A (en) | 2013-11-13 | 2013-11-13 | Cesium iodide scintillation screen structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103646681A true CN103646681A (en) | 2014-03-19 |
Family
ID=50251882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310568284.XA Pending CN103646681A (en) | 2013-11-13 | 2013-11-13 | Cesium iodide scintillation screen structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103646681A (en) |
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2013
- 2013-11-13 CN CN201310568284.XA patent/CN103646681A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140319 |
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| WD01 | Invention patent application deemed withdrawn after publication |