CN113433577A - Flat-plate type radiographic image detector - Google Patents
Flat-plate type radiographic image detector Download PDFInfo
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- CN113433577A CN113433577A CN202110712082.2A CN202110712082A CN113433577A CN 113433577 A CN113433577 A CN 113433577A CN 202110712082 A CN202110712082 A CN 202110712082A CN 113433577 A CN113433577 A CN 113433577A
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- carbon fiber
- image detector
- fiber plate
- foam
- visible light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
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- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a flat-plate radioactive ray image detector which comprises a carbon fiber plate and an inner frame which are oppositely arranged from top to bottom, foam, a fluorescent layer and a visible light image detector, wherein the foam, the fluorescent layer and the visible light image detector are arranged between the carbon fiber plate and the inner frame from top to bottom, and the fluorescent layer is in compression joint with the visible light image detector. According to the flat-plate type radiographic image detector provided by the invention, the fluorescent layer and the visible light image detector are directly pressed, so that the absorption and scattering of optical glue to light during fitting are reduced, and the conversion efficiency and the image quality of the detector are improved; the problem of residual bubbles during pressing is solved; because the fluorescent layer and the visible light image detector are fixed together by pressing, the mode provides feasibility for poor reworking operation in the manufacturing process of the detector.
Description
RELATED APPLICATIONS
The invention relates to a divisional application of application number 2019106501124, application date 7/18/2019, and the title "a method for manufacturing a flat-panel radiographic image detector and an image detector".
Technical Field
The invention relates to the field of manufacturing of radiographic image detectors, in particular to a flat-plate radiographic image detector.
Background
Particle imaging is more and more widely applied to the fields of industrial detection, safety inspection and the like, and compared with fluorescent materials such as cesium iodide and the like, a GOS fluorescent layer has the advantages of short afterglow, quick response and the like and is received by the fields of industrial detection, safety inspection, radiotherapy treatment and the like. However, the GOS (Gd2O2S: Tb) scintillator is pressed by powder during manufacturing, so the fluorescent material has large self-scattering and low image resolution; when the traditional laminating technology is adopted, glue between the GOS and the visible light image detector can scatter and absorb light to a certain extent, and the image quality can be further reduced; in addition, the bonding process is limited by yield because the GOS and the visible light image detector can be integrated after bonding, and the process has no possibility of rework.
The invention provides a new technology, which adopts the cambered surface carbon fiber plate to directly press the GOS and the visible light image detector, thereby reducing the influence of optical cement on the image quality; the GOS is not fixed with the visible light image detector as a whole, thus providing reworking feasibility.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides a method for manufacturing a flat-panel radiographic image detector and the image detector, which are used for removing air between a fluorescent layer and a visible light image detector so as to improve the image quality and resolution of the detector, provide feasibility for rework and reduce the production cost, and the technical scheme is as follows:
the invention provides a method for manufacturing a flat-panel radiographic image detector, which comprises the following steps:
s1, sequentially stacking the foam, the fluorescent layer and the visible light image detector from top to bottom on the inner frame;
s2, fixing and placing the curved carbon fiber plate on the foam, and fixing four edges of the carbon fiber plate;
s3, under the action of external force, the carbon fiber plate is flattened and gradually pushed to four corners from the middle of the carbon fiber plate, so that air between the fluorescent layer and the visible light image detector is gradually removed, the carbon fiber plate is attached to the foam, and the carbon fiber plate is of a planar structure.
Further, in step S2, the carbon fiber sheet is fixed on the foam by a locking mechanism, and the locking mechanism is disposed at the center of four sides of the carbon fiber sheet.
Further, in step S3, the locking mechanism is driven to move from the middle of the four sides of the curved carbon fiber sheet to the four sides gradually, so that the curved carbon fiber sheet is in a planar structure and the curved carbon fiber sheet is maintained in the planar structure.
Further, in step S3, when the carbon fiber sheet is a planar structure, the length of the carbon fiber sheet in the bending direction thereof is equal to or greater than the lengths of the foam, the fluorescent layer, and the visible light image detector.
Further, in step S2, the carbon fiber sheet is bent in a direction parallel to the direction of the gate BUS line of the visible light image detector, or in a direction parallel to the longitudinal direction of the visible light image detector.
Further, the manufacturing method further includes: and S4, removing the locking mechanism, and fixing the carbon fiber plate and the foam by arranging a fastener.
The invention also provides a flat-panel radiographic image detector which is manufactured by the manufacturing method of the flat-panel radiographic image detector.
Further, the image detector comprises a carbon fiber plate and an inner frame which are oppositely arranged from top to bottom, and foam, a fluorescent layer and a visible light image detector which are arranged between the carbon fiber plate and the inner frame from top to bottom; the carbon fiber plate is curved and is recessed towards the lower side;
under the action of external force, the two ends of the carbon fiber plate along the bending direction of the carbon fiber plate are close to the foam direction, so that the first surface of the carbon fiber plate is attached to the surface, far away from the fluorescent layer, of the foam until the carbon fiber plate is of a plane structure.
Furthermore, the carbon fiber plate is of a square structure, and the side edge of the carbon fiber plate in the length direction is arc-shaped, or the side edge of the carbon fiber plate in the width direction is arc-shaped; or
The carbon fiber plate is of a hemispherical structure with an upward opening.
Further, the carbon fiber plate is made of an elastic material.
The technical scheme provided by the invention has the following beneficial effects:
a. the invention relates to a method for manufacturing a flat panel type radioactive ray image detector, which is characterized in that air between a fluorescent layer and a visible light image detector is removed by utilizing the stress of a carbon fiber plate, and the fluorescent layer and the visible light image detector are fixed, so that the relative displacement between the fluorescent layer and the visible light image detector is avoided; the absorption and scattering of optical glue to light during fitting are reduced, and the conversion efficiency, image quality and resolution of the detector are improved;
b. feasibility is provided for rework, and the production cost of the detector is indirectly reduced;
c. the manufacturing method of the flat-plate type radiographic image detector is simple to operate and easy to widely apply.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a sectional view of a flat type radiation image detector provided by an embodiment of the present invention in a raw state;
fig. 2 is a cross-sectional view of a flat type radiation image detector according to an embodiment of the present invention after completion of processing.
Wherein the reference numerals include: 1-carbon fiber plate, 2-foam cotton, 3-fluorescent layer, 4-visible light image detector and 5-inner frame.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
In one embodiment of the present invention, there is provided a method of manufacturing a flat panel type radiographic image detector, as shown in fig. 1 and 2, including the steps of:
s1, sequentially laminating the foam 2, the fluorescent layer 3 and the visible light image detector 4 from top to bottom on the inner frame 5;
s2, firstly, fixing the curved carbon fiber plate on a specific position of foam (the specific position is convenient for the curved carbon fiber plate to be flattened and then can meet the requirement of an integral detector), then fixing four edges of the carbon fiber plate, preferably, fixing the carbon fiber plate on the foam by using a locking mechanism, and arranging the locking mechanism at the centers of the four edges of the carbon fiber plate;
s3, flattening the carbon fiber plate, and gradually pushing the carbon fiber plate from the middle of four sides of the carbon fiber plate to four corners to gradually remove air between the fluorescent layer and the visible light image detector, so that the carbon fiber plate is attached to the foam, the carbon fiber plate is of a planar structure, specifically, the locking mechanism presses the carbon fiber plate 1 along the bending direction of the carbon fiber plate 1 toward the foam 2 (the pressing direction is shown by an arrow in fig. 1), so that the carbon fiber plate 1 is attached to the side of the foam 2 away from the fluorescent layer 3 until the carbon fiber plate 1 is of a planar structure (the planar structure means that the upper surface and the lower surface of the carbon fiber plate 1 are horizontal planes), and the length direction of the carbon fiber plate 1 is parallel to the extending direction of the foam 2; flattening the carbon fiber plate by using an external force, removing air between the fluorescent layer 3 and the visible light image detector 4 by using the stress of the carbon fiber plate, gradually extruding and removing the air between the fluorescent layer 3 and the visible light image detector 4 from the center to the edge by flattening (the air removing direction is shown by a left arrow and a right arrow in fig. 1), and fixing the carbon fiber plate 1; because the carbon fiber plate is of the cambered surface structure, the stress and the stress direction of the carbon fiber plate are opposite after the carbon fiber plate is flattened, so that the carbon fiber plate can continuously compress the foam, the fluorescent layer 3 and the visible light image detector are compressed, and the fluorescent layer and the visible light image detector form an integrated structure.
In a preferred embodiment of the present invention, the flat panel type radiographic image detector is provided with the locking mechanism, which is preferably a metal block having a certain weight to facilitate pressing the curved carbon fiber plate.
In step S2, when the carbon fiber sheet 1 is not bonded, the bending direction of the carbon fiber sheet is parallel to the direction of the Gate BUS line of the visible light image detector, so that the Gate scan line of the visible light image detector is wider than the data line, which facilitates the removal of air between the photodiode islands, and when the GOA-Gate on array technology is used, the heights of the two ends of the scan line are lower than the height of the signal line terminal, which facilitates the removal of air by squeezing. Finally, clamping the otherwise curved carbon fiber plates at the ends of the scan lines is easier than clamping the ends of the data lines, since there is no risk of interference with and damage to the read-out chips.
In step S2, when not attached, the bending direction of the carbon fiber plate 1 is parallel to the long side direction of the visible light image detector, so that the generation of bubbles can be reduced to the maximum extent when the carbon fiber plate is pressed and attached, for example, an array of 1024 × 2048, and the bending direction of the carbon fiber plate is in the direction of 2048.
In step S3, when the carbon fiber plate 1 is in a planar structure, the length of the carbon fiber plate 1 along the bending direction is greater than or equal to the lengths of the foam 2 and the fluorescent layer 3, as shown in fig. 2, when the bent portion of the curved carbon fiber plate 1 is pressed to approach the foam and adhere to the foam, the stressed surface of the carbon fiber plate 1 is large, which is beneficial to gradually pressing and removing the air between the fluorescent layer 3 and the visible light image detector 4 from the center to the edge; if the length of the carbon fiber plate 1 is smaller than the lengths of the foam 2, the fluorescent layer 3 and the visible light image detector 4, when the bent portion of the curved carbon fiber plate 1 is extruded to approach the foam and is attached to the foam, the stress surfaces at the two ends of the carbon fiber plate 1 are smaller, and the air between the fluorescent layer 3 and the visible light image detector 4 cannot be completely removed by gradually extruding the air from the center to the edge, that is, the two ends of the foam are not stressed, so that the air at the two ends between the fluorescent layer 3 and the visible light image detector 4 cannot be completely removed.
Further, in step S3, the locking mechanism is driven by a uniform force to extrude along the bending direction of the carbon fiber plate 1, so that the carbon fiber plate 1 and the foam 2 are attached to each other on the side away from the fluorescent layer 3 until the carbon fiber plate 1 is in a horizontally arranged planar structure, and the uniform force is applied, which is beneficial to protecting the carbon fiber plate 1, the foam 2, the fluorescent layer 3 and the visible light image detector 4, and on the other hand, air at two ends between the fluorescent layer 3 and the visible light image detector 4 is uniformly removed. After the carbon fiber plate 1 becomes a horizontally arranged plane structure, the method further comprises a step S4 of removing the locking mechanism and fixing the carbon fiber plate with the foam by arranging a fastener, wherein the fastener is a screw or a buckle.
The invention also provides an image detector manufactured by the manufacturing method, and the image detector comprises a carbon fiber plate 1 and an inner frame 1 which are oppositely arranged up and down, and foam 2, a fluorescent layer 3 and a visible light image detector 4 which are arranged between the carbon fiber plate 1 and the inner frame 1 from top to bottom; the carbon fiber plate 1 is in a curved surface shape, the carbon fiber plate 1 is in an initial non-extruded state, and the carbon fiber plate 1 is recessed towards the lower side; under the action of external force, the two ends of the carbon fiber plate 1 along the bending direction of the carbon fiber plate are close to the foam 2, so that the first surface of the carbon fiber plate 1 is attached to the surface, far away from the fluorescent layer 3, of the foam 2 until the carbon fiber plate 1 is of a planar structure.
The carbon fiber plate has two structural forms: the carbon fiber plate 1 is of a square structure, and the side edge in the length direction of the carbon fiber plate is arc-shaped, or the side edge in the width direction of the carbon fiber plate is arc-shaped; or, the carbon fiber plate 1 is of a hemispherical structure with an upward opening, that is, the cross section of the carbon fiber plate is of a semicircular structure or a semi-elliptical structure.
In the embodiment of the present invention, the carbon fiber plate 1 is preferably made of an elastic material, and when the carbon fiber plate is disassembled or separated, the carbon fiber plate 1 can recover a specific bending direction, i.e. the carbon fiber plate is changed from a planar structure to a curved surface, because the carbon fiber plate is not adhered by optical cement, is easy to peel off, can be reused, provides feasibility for rework, and indirectly reduces the production cost of such a detector.
The technology for directly pressing the fluorescent layer and the visible light image detector reduces absorption and scattering of optical glue to light during fitting, and improves the conversion efficiency and the image quality of the detector; the problem of residual bubbles during pressing is solved; because the fluorescent layer and the visible light image detector are fixed together by pressing, the mode provides feasibility for poor reworking operation in the manufacturing process of the detector. The flat-plate radiation image detector provided by the invention adopts the curved carbon fiber plate to replace the existing straight carbon fiber plate, the carbon fiber plate is flattened by utilizing a mechanical structure, and the foam is compressed, so that air between the fluorescent layer and the visible light image detector is removed, the fluorescent layer and the visible light image detector are further fixed, and the relative displacement between the fluorescent layer and the visible light image detector is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The flat-plate radiographic image detector is characterized by comprising a carbon fiber plate (1) and an inner frame (5) which are arranged oppositely from top to bottom, foam (2), a fluorescent layer (3) and a visible light image detector (4) which are arranged between the carbon fiber plate (1) and the inner frame (5) from top to bottom, wherein the fluorescent layer (3) is pressed on the visible light image detector (4).
2. The flat panel type radiographic image detector according to claim 1, wherein the foam (2) is press-bonded to the fluorescent layer (3).
3. The flat panel radiographic image detector according to claim 2, wherein the carbon fiber sheet (1) is crimped onto the foam (2).
4. The flat panel type radiographic image detector according to claim 1 or 3, wherein the carbon fiber plate (1), the foam (2), the fluorescent layer (3), and the visible light image detector (4) are formed by one-time crimping.
5. The flat type radiographic image detector according to claim 1, wherein the carbon fiber plate (1) is fixedly connected with the foam (2) by a fastener.
6. The flat panel type radiographic image detector according to any one of claims 1 to 5, wherein in an initial non-pressed state, the carbon fiber sheet (1) is curved and the carbon fiber sheet (1) is recessed to a lower side; under the action of external force, the two ends of the carbon fiber plate (1) in the bending direction are close to the foam (2) direction, so that the first surface of the carbon fiber plate (1) is attached to the surface, away from the fluorescent layer (3), of the foam (2) until the carbon fiber plate (1) is of a planar structure.
7. The flat panel type radiographic image detector according to claim 1, wherein the flat panel type radiographic image detector is manufactured by a manufacturing method comprising:
s1, sequentially stacking the foam, the fluorescent layer and the visible light image detector from top to bottom on the inner frame;
s2, firstly, placing the curved carbon fiber plate on foam, and then fixing the carbon fiber plate;
s3, under the action of external force, flattening the curved carbon fiber plate to enable the carbon fiber plate to be of a plane structure, and further enabling the carbon fiber plate to be attached to the foam cotton, so that the fluorescent layer and the visible light image detector are compressed.
8. The flat panel radiographic image detector of claim 7, wherein the carbon fiber sheet is fixed to the foam using a locking mechanism disposed at the center of four sides of the carbon fiber sheet in step S2.
9. The flat panel radiographic image detector of claim 7, wherein in step S3, when the carbon fiber sheet is a planar structure, the length of the carbon fiber sheet is equal to or greater than the length of the foam, the fluorescent layer and the visible light image detector.
10. The flat panel radiation image detector according to claim 7, wherein in step S2, the bending direction of the carbon fiber sheet is parallel to the direction of the gate BUS line of the visible light image detector, or the bending direction of the carbon fiber sheet is parallel to the long side direction of the visible light image detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110712082.2A CN113433577B (en) | 2019-07-18 | 2019-07-18 | Flat-plate type radiographic image detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110712082.2A CN113433577B (en) | 2019-07-18 | 2019-07-18 | Flat-plate type radiographic image detector |
| CN201910650112.4A CN110376630B (en) | 2019-07-18 | 2019-07-18 | Manufacturing method of flat-plate radioactive ray image detector and image detector |
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| CN201910650112.4A Division CN110376630B (en) | 2019-07-18 | 2019-07-18 | Manufacturing method of flat-plate radioactive ray image detector and image detector |
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| CN113433577A true CN113433577A (en) | 2021-09-24 |
| CN113433577B CN113433577B (en) | 2022-12-02 |
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| CN201910650112.4A Active CN110376630B (en) | 2019-07-18 | 2019-07-18 | Manufacturing method of flat-plate radioactive ray image detector and image detector |
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| CN111134705B (en) * | 2020-01-21 | 2023-10-13 | 上海奕瑞光电子科技股份有限公司 | Radiation image detector and manufacturing method thereof |
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| JP2011059058A (en) * | 2009-09-14 | 2011-03-24 | Fujifilm Corp | Radiographic imaging device |
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| CN205264702U (en) * | 2015-11-25 | 2016-05-25 | 上海奕瑞光电子科技有限公司 | Flat panel detector structure |
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| US6103147A (en) * | 1999-05-27 | 2000-08-15 | Saint-Gobain Industrial Ceramics, Inc. | Method and apparatus for manufacturing curved gamma camera detector crystals |
| JP2006290684A (en) * | 2005-04-12 | 2006-10-26 | Sumitomo Electric Ind Ltd | Group iii nitride crystal substrate and method for manufacturing the same |
| KR101352359B1 (en) * | 2007-07-23 | 2014-01-23 | 삼성디스플레이 주식회사 | X-ray detector and method of manufacturing the same |
| CN101900824B (en) * | 2010-06-24 | 2012-05-09 | 江苏康众数字医疗设备有限公司 | Scintillator packaging thin film and packaging method thereof |
| CN109585477B (en) * | 2018-10-31 | 2021-03-19 | 奕瑞影像科技（太仓）有限公司 | Flat panel detector structure and preparation method thereof |
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2019
- 2019-07-18 CN CN202110712082.2A patent/CN113433577B/en active Active
- 2019-07-18 CN CN201910650112.4A patent/CN110376630B/en active Active
Patent Citations (4)
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| JP2009287929A (en) * | 2008-05-27 | 2009-12-10 | Toshiba Corp | Scintillator panel and radiation detector |
| JP2011059058A (en) * | 2009-09-14 | 2011-03-24 | Fujifilm Corp | Radiographic imaging device |
| CN102918418A (en) * | 2010-05-25 | 2013-02-06 | 富士胶片株式会社 | Radiological imaging device |
| CN205264702U (en) * | 2015-11-25 | 2016-05-25 | 上海奕瑞光电子科技有限公司 | Flat panel detector structure |
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| CN110376630B (en) | 2021-07-06 |
| CN113433577B (en) | 2022-12-02 |
| CN110376630A (en) | 2019-10-25 |
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