CN202126853U - Scintillator packaging structure - Google Patents
Scintillator packaging structure Download PDFInfo
- Publication number
- CN202126853U CN202126853U CN201120169155XU CN201120169155U CN202126853U CN 202126853 U CN202126853 U CN 202126853U CN 201120169155X U CN201120169155X U CN 201120169155XU CN 201120169155 U CN201120169155 U CN 201120169155U CN 202126853 U CN202126853 U CN 202126853U
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- CN
- China
- Prior art keywords
- scintillator
- layer
- encapsulating structure
- around
- reflection horizon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Conversion Of X-Rays Into Visible Images (AREA)
- Measurement Of Radiation (AREA)
Abstract
The utility model provides a scintillator packaging structure which comprises a base plate, a reflecting layer, a scintillator, a tempered-glass layer and an encircling ring, wherein the reflecting layer is attached onto at least partial area of the surface of the basal plate and is used for reflecting visible light; the scintillator is attached onto at least partial area of the surface of the reflecting layer and can emit visible light when excited by the irradiation of X-ray; the tempered-glass layer is attached onto the surface of the scintillator; and the encircling ring encircles at the edge side of the scintillator to wholly wrap the scintillator and is made of material capable of preventing water vapor from permeating. The scintillator packaging structure has the advantages of high reflectivity of the visible light, capability of preventing water vapor from permeating and low cost.
Description
Technical field
The utility model relates to a kind of X-ray detector field, particularly a kind of scintillator encapsulating structure.
Background technology
X-ray detector is widely used in industry and medical industry, and scintillator is just becoming many researchists' research topic as requisite parts in the X-ray detector.Comparatively commonly used is caesium iodide scintillator at present; This kind scintillator has advantages such as high brightness, high resolving power, but because cesium iodide is a hygroscopic materials, is exposed in the air and can absorbs moisture and deliquescence; Thereby can reduce the characteristic of scintillator, especially can cause image resolution ratio greatly to reduce.Therefore, how caesium iodide scintillator is effectively encapsulated,, seem particularly important so that it does not receive the influence of moisture.
At present representative cesium iodide panel detector structure and method for packing be the plated film package method of Japanese Hamamatsu Photonics K. K announcement; Specifically can be referring to the ZL patent No. 99807295.8 patent documentations; The document discloses a kind of scintillator panel, radiation image sensor and manufacturing approach thereof; The surface of the aluminum base plate 10 of this scintillator panel 2 has formed caesium iodide scintillator 12; Then on the whole surface of aluminum base plate 10 and scintillator 12 with chemical vapour deposition technique (CVD) vapor deposition one deck parylene film 14, on the parylene film 14 of scintillator 12 1 sides, plate SiO again with vacuum sputtering
2Film 16 is at last at SiO
2Whole surperficial vapor deposition the 2nd strata P-xylene film 18 of film 16 and substrate.SiO
2The thickness of film 16 is 100-300nm, about 10 microns of parylene film 14 and 18 thickness.
Above-mentioned method has conspicuous shortcoming:
1.CVD it is very high with the equipment input of vacuum sputtering film forming.
2.CVD slow with the vacuum sputtering rate of film build, the efficient that comes into force is low.
3. the SiO2 film of vacuum sputtering formation is fine and close inadequately, and anti-steam penetration performance is not as the SiO2 of bulk solid.
4. the performance that penetrates of the anti-steam of parylene film is general.
5.2 the film formed sandwich protective seam of strata P-xylene film and SiO2 is lower to visible light transmittance, scintillator is propagated by the visible light of excitation of X-rays reduced by the light quantity of light original paper.
The utility model content
The purpose of the utility model is to provide a kind of low cost and reliable scintillator encapsulating structure.
Reach other purposes in order to achieve the above object, the scintillator encapsulating structure that the utility model provides comprises: substrate; Attached to the said substrate surface reflection horizon of subregion at least, be used for reflect visible light; Attached to surface, the said reflection horizon scintillator of subregion at least, it inspires visible light under the irradiation of X ray; Tempered glass layer attached to said scintillator surface; Be looped around said scintillator avris so that said scintillator is wrapped up in the circling ring that attaches fully, its material adopts can prevent the material that steam penetrates.
In sum; The employing of scintillator encapsulating structure, reflection horizon, tempered glass and the circling ring of the utility model encapsulate scintillator, can improve the reflectivity of visible light on the one hand, on the other hand; Can prevent effectively that steam from penetrating, this scintillator encapsulating structure is simple and cost is low.
Description of drawings
Fig. 1 is the structural representation of existing scintillator panel;
Fig. 2 is the synoptic diagram of the scintillator encapsulating structure of the utility model;
Fig. 3 is substrate and the reflection horizon synoptic diagram that the scintillator encapsulating structure of the utility model is comprised;
Fig. 4 is the reflectivity synoptic diagram of the scintillator reflection horizon that encapsulating structure comprises of the utility model to visible light;
Fig. 5 is a kind of preferred structure synoptic diagram of the scintillator circling ring that encapsulating structure comprises of the utility model;
Fig. 6 is the another kind of preferred structure synoptic diagram of the scintillator circling ring that encapsulating structure comprises of the utility model;
Fig. 7 is that the visible light in the scintillator encapsulating structure of the utility model is propagated synoptic diagram.
Embodiment
See also Fig. 2, the scintillator encapsulating structure of the utility model comprises: substrate 101, reflection horizon 102, scintillator 103, tempered glass layer 104 and circling ring 105.
Said substrate 101 materials are the material very little to the absorption of X ray, as to the absorption of X ray less than 5% material.Preferably, said substrate 101 materials can comprise glass, carbon fibre, spun glass, metal, alloy etc.In addition; When said substrate 101 materials comprised carbon fibre or spun glass, said substrate 101 comprises the fibrage 1012 that formed by carbon fiber board or glass fiber material and respectively attached to the two inorganics films 1011 on 1012 liang of surfaces of said fibrage, and was as shown in Figure 3; Preferably; The material of two inorganics films can be Parylene, Teflon of anti-200 celsius temperatures or the like, at fibrage 1012 surface coverage inorganics films 1011, can make the smooth surface of the substrate 101 of formation.
Said reflection horizon 102 is used for reflect visible light attached to subregion at least, the surface of said substrate 101.In the present embodiment, said reflection horizon 102 is attached to whole upper surfaces of said substrate 101.
As a kind of preferred, said reflection horizon 102 comprises the multilayer optical reflectance coating, and for example, 20-100 layer, its material can adopt the deielectric-coating material of high index of refraction and low-refraction to form through vacuum thermal evaporation or magnetron sputtering alternating deposit.Wherein, the deielectric-coating material of high index of refraction can be selected TiO
2, Ti
3O
5, TiO
x, Ta
2O
5, Nb
2O
5, ZrO
2, or H
4Al
2O
3Deng, low-index material can be selected SiO
2, MgF
2Deng.As shown in Figure 4, said multilayer optical reflectance coating to reflection of light rate in the wave band in the 380-780nm scope up to more than 98%.This optical reflectance coating can directly be deposited on the surface of the substrate 101 of glass material, and chemical reaction can not take place with caesium iodide scintillator.
Preferred as another kind, said reflection horizon 102 can comprise metallic diaphragm, like silver film or aluminum membranous layer etc., and inorganics diaphragm.As shown in Figure 3; The surface of the organic thin film 1011 of anti-200 celsius temperatures that comprised at substrate 101; With vacuum thermal evaporation or magnetron sputtering method plating layer of aluminum rete or silver film 1021; Thickness is in the 100-200nm scope, and the upper surface at aluminum membranous layer or silver film 1021 plates one deck inorganics diaphragm 1022 again.Wherein, the material of said inorganics diaphragm 1022 can be SiO
2Or Al
2O
3, thickness is in the 100-300nm scope.
Said scintillator 103 is attached to the subregion at least on 102 surfaces, said reflection horizon, and it inspires visible light under the irradiation of X ray, and its thickness is at the 300-700 micrometer range.As a kind of preferred, the material of said scintillator 103 is a cesium iodide, and it comprises the spicule or the column of a plurality of spaces, and the diameter of spicule or column is at the 5-20 micrometer range.In addition, more preferred, said scintillator 103 materials can be the cesium iodide of doping, for example, the doping thallium iodide, doping content is 0.1-1%.Thickness 300-700 micron.Between said scintillator 103 and the reflection horizon 102 good adhesive is arranged, chemical reaction can not take place mutually.
Said tempered glass layer 104 is attached to said scintillator 103 surfaces, and it comprises the glassy layer that passes through chemical enhanced PROCESS FOR TREATMENT, the glassy layer that for example adopts healthy and free from worry B270 glass to form.Usually, simple glass like methods such as sodion displacement, lithium ion displacement, alds, can form compressive stress layer through chemical enhanced technology on the surface, thereby improves glass intensity.The thickness of said glassy layer can be 0.3-0.6mm, and its refractive index is 1.49-1.52, and transmission of visible light is about 92%.
As a kind of preferred, said tempered glass layer 104 also can comprise the blow-out disc that is between said glassy layer and the said scintillator 103, and is just at lower surface applying one deck blow-out disc of said glassy layer, broken to prevent glassy layer.
Preferred as another kind, said tempered glass layer 104 also can comprise two anti-reflection films that are plated on said glassy layer two surfaces respectively, so that strengthen visible light transmittance.Said two anti-reflection films can all adopt the deielectric-coating material of high index of refraction and the formed single or multiple lift optical medium film of deielectric-coating material alternating deposit of low-refraction; For example, the deielectric-coating material of employing high index of refraction and low-refraction forms the optical medium film of 1-10 layer through alternating deposits such as vacuum thermal evaporation, magnetron sputtering, sol-gel processes.Wherein, the deielectric-coating material of high index of refraction can comprise TiO
2, Ti
3O
5, TiO
x, Ta
2O
5, Nb
2O
5, ZrO
2, or H
4Al
2O
3Deng, low-index material comprises SiO
2, MgF
2Deng.The anti-reflection film on two sides can be brought up to the transmissivity of glassy layer more than 98%.
Said circling ring 105 is looped around said scintillator 103 avris; So that being wrapped up in fully, attaches said scintillator 103; Its material adopts can prevent the material that steam penetrates, and for example the hot melt butyl rubber is more concrete; Like the PVS-101 hot melt butyl sealant band of German IDALL gram, its anti-steam transmission rate is less than 0.01g/cm2/day.Do not have viscosity under the hot melt butyl rubber normal temperature, it is softening to be heated to the 110-150 deg.c, applies certain pressure and keeps the regular hour, and temperature is reduced to room temperature again, and glue-line will solidify and the firm binding face that sticks.
In the present embodiment; Said circling ring 105 is between said reflection horizon and the said tempered glass layer 104, but it should be appreciated by those skilled in the art that the position of circling ring only just lists; But not to the restriction of the utility model; In fact, when said reflection horizon 102 only attached to the subregion on the surface of said substrate 101, then said circling ring 105 also can be between substrate 101 and the said tempered glass layer 104 etc.
As a kind of preferred, said circling ring 105 can comprise: with said reflection horizon 102 respective surfaces (face that promptly contact) contact with scintillator first around layer, with said tempered glass layer 104 respective surfaces (face that promptly contacts) with scintillator contact second around layer and be folded in said first around layer and said second around the becket between the layer around layer.
For example; As shown in Figure 5; Said circling ring 105 comprise contact with said reflection horizon 102 upper surfaces first around layer 1051, contact with said tempered glass layer 104 lower surface second around layer 1052 and be folded in said first around layer 1051 and said second around the becket between the layer 1052 around layer 1053; Wherein, said first all adopts fluid sealant with said second around layer 1052 around layer 1051, and both thickness is that 0.8mm, width are greater than 8mm; Since adopt fluid sealant said first around layer 1051 with said second around the ratio of the width of layer 1052 and thickness greater than 10, can effectively reduce the probability of water vapor permeable.In the present embodiment, said becket is 0.4mm around the thickness of layer 1053.
Again for example; As shown in Figure 6, said circling ring 105 comprise contact with said reflection horizon 102 upper surfaces first around layer, contact with said tempered glass layer 104 lower surface second around layer and be folded in said first around layer and said second around the becket between the layer around layer 1053.Wherein, said first comprises Nei Huan district 1051a and outer zone 1051b around layer, and said second comprises Nei Huan district 1052a and outer shroud 1052 district b around layer, and the material in Nei Huan district 1051a and interior ring 1052a district is fluid sealant, thickness 0.2mm, width 3mm; The material of outer zone 1051b and outer zone 1052b is a low-melting-point metal, like tin etc., width 1mm; Becket is around the width 4mm of layer 1053, thickness 0.4mm.Because metallic tin is a low-melting-point metal; Be easy to be welded to the outer side clearance of becket between layer 1053 and Nei Huan district 1051a and Nei Huan district 1052a; Therefore, adopt metallic tin and becket better to prevent the effect that steam permeates than only adopting fluid sealant to have around layer 1053.
See also Fig. 7 again; Above-mentioned scintillator encapsulating structure in use; Make the lower surface incident of X ray by substrate 101; Can inspire visible light after shining scintillator 103, inspire visible light and be 360 ° and disperse, the visible light of upwards propagating along the crystal column of scintillator 103 106 is detected by light original paper 109 finally; And the visible light of propagating downwards along the crystal column of scintillator 103 107 forms reflected light 108 after 102 surface reflections of reflection horizon, and thus, this reflected light 108 is caught by light original paper 109 also can, thereby has improved the light output of scintillator 103.
In sum, the advantage of the scintillator encapsulating structure of the utility model comprises:
1. utilize the structure of double glazing to be implemented in and plate scintillator on the substrate, to form packaging protection to scintillator.
2. use the optical glass of chemical enhanced mistake, intensity is good, and steam permeates hardly, and glass is very high to visible light transmittance, simultaneously, can further improve transmissivity to 98% through the plating anti-reflection film.
3. use the excellent hot melt butyl rubber of anti-steam penetration performance to do packaging protection.
4. use the sandwich of layers construction packages protection of hot melt butyl rubber and becket, improve the anti-steam permeance property of circling ring around layer and metallic tin.
The foregoing description is just listed the principle and the effect of expressivity explanation the utility model, but not is used to limit the utility model.Any personnel that are familiar with this technology all can make amendment to the foregoing description under the spirit and scope of the utility model.Therefore, the rights protection scope of the utility model should be listed like claims.
Claims (14)
1. scintillator encapsulating structure is characterized in that comprising:
Substrate;
Attached to said substrate surface subregion and be used for the reflection horizon of reflect visible light at least;
Attached to surface, the said reflection horizon scintillator of subregion at least, it inspires visible light under the irradiation of X ray;
Tempered glass layer attached to said scintillator surface;
Be looped around said scintillator avris so that said scintillator is wrapped up in the circling ring that attaches fully, its material adopts can prevent the material that steam penetrates.
2. scintillator encapsulating structure as claimed in claim 1 is characterized in that: said circling ring is between said reflection horizon and the said tempered glass layer.
3. scintillator encapsulating structure as claimed in claim 2 is characterized in that: said circling ring comprises: contact with said reflection horizon respective surfaces first around layer, contact with said tempered glass layer respective surfaces second around layer and be folded in said first around layer and said second around the becket between the layer around layer.
4. scintillator encapsulating structure as claimed in claim 3 is characterized in that: said first all is fluid sealant around the layer and said second material around layer, and said first around layer with said second around layer width separately and thickness than greater than 10.
5. scintillator encapsulating structure as claimed in claim 3 is characterized in that: said first be fluid sealant, the outside around layer and said second the material around the inboard of layer material be low-melting-point metal.
6. scintillator encapsulating structure as claimed in claim 1 is characterized in that: said tempered glass layer comprises the glassy layer through chemical enhanced PROCESS FOR TREATMENT.
7. scintillator encapsulating structure as claimed in claim 6 is characterized in that: said tempered glass layer comprises the blow-out disc that is between said glassy layer and the said scintillator layers.
8. scintillator encapsulating structure as claimed in claim 6 is characterized in that: said tempered glass layer comprises two anti-reflection films that are plated on said glassy layer two surfaces respectively, so that strengthen visible light transmittance.
9. scintillator encapsulating structure as claimed in claim 8 is characterized in that: said two anti-reflection films are the deielectric-coating material of high index of refraction and the formed single or multiple lift optical medium film of deielectric-coating material alternating deposit of low-refraction.
10. scintillator encapsulating structure as claimed in claim 1 is characterized in that: said scintillator comprises the spicule or the column of a plurality of spaces.
11. scintillator encapsulating structure as claimed in claim 1 is characterized in that: said reflection horizon comprises that the deielectric-coating material alternating deposit by the deielectric-coating material of high index of refraction and low-refraction forms the multilayer optical deielectric-coating.
12. scintillator encapsulating structure as claimed in claim 1 is characterized in that: said reflection horizon comprise metallic diaphragm and be in metallic diaphragm and said scintillator between the inorganics diaphragm.
13. scintillator encapsulating structure as claimed in claim 1 is characterized in that: the material of said substrate comprises glass, carbon fiber board, spun glass, metal, reaches alloy.
14. scintillator encapsulating structure as claimed in claim 13; It is characterized in that: when the material of said substrate comprised carbon fiber board or spun glass, said substrate comprised the fibrage that formed by carbon fiber board or glass fiber material and respectively attached to the two inorganics films on said fibrage two surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120169155XU CN202126853U (en) | 2011-05-25 | 2011-05-25 | Scintillator packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120169155XU CN202126853U (en) | 2011-05-25 | 2011-05-25 | Scintillator packaging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126853U true CN202126853U (en) | 2012-01-25 |
Family
ID=45489917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120169155XU Expired - Lifetime CN202126853U (en) | 2011-05-25 | 2011-05-25 | Scintillator packaging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305937A (en) * | 2011-05-25 | 2012-01-04 | 上海奕瑞光电子科技有限公司 | Scintillator package structure |
-
2011
- 2011-05-25 CN CN201120169155XU patent/CN202126853U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305937A (en) * | 2011-05-25 | 2012-01-04 | 上海奕瑞光电子科技有限公司 | Scintillator package structure |
| CN102305937B (en) * | 2011-05-25 | 2013-08-14 | 上海奕瑞光电子科技有限公司 | Scintillator package structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120125 Effective date of abandoning: 20130814 |
|
| RGAV | Abandon patent right to avoid regrant |