Bendable x-ray detector

Abstract

The present invention relates to a bendable X-ray detector and, more specifically, to a bendable X-ray detector having a means for forming a uniform radius of curvature overall or for each section. The bendable X-ray detector according to one embodiment of the present invention may comprise: a flexible X-ray detector which extends in a first direction and detects radiation incident on a first surface; a plurality of cover plates provided on respective side surfaces parallel to the first direction of the flexible X-ray detector so as to support the flexible X-ray detector and provided to be bendable together with the flexible X-ray detector; and a plurality of dual gear plates connecting the plurality of cover plates and adjusting the bending of the flexible X-ray detector with respect to a bending axis parallel to a second direction intersecting the first direction.

Description

Bendable X-ray detector

[0001] The present invention relates to an X-ray detector, and more particularly, to a bendable X-ray detector having a means for forming a constant radius of curvature overall or by section.

[0002] Non-destructive testing is a measuring technology used as a means of quality control and quality assurance of materials, devices, and structures. It allows the examination of the presence or absence of defects on the surface or inside of a test object, or the properties and internal structure of the test object while maintaining its original shape without damaging, separating, or destroying the object.

[0003] In other words, non-destructive testing refers to all tests that use special methods that utilize physical phenomena such as ultrasound, radiation, and eddy current to determine the presence or absence of defects, their condition or properties, and internal structure without destroying, separating, or damaging the subject matter such as materials or products.

[0004] The primary purpose of non-destructive testing is to improve reliability. Non-destructive testing can also reduce manufacturing costs by lowering the defect rate during the manufacturing stage, and can also improve manufacturing technology.

[0005] Digital flat-panel detectors are also being utilized in this field of non-destructive radiation testing, and recently, research is actively underway on flexible detectors that can be bent like X-ray film to inspect pipe welds and other areas. Flexible detectors can be curved, which maintain a fixed bend, or bendable, which can be opened and closed.

[0006] Meanwhile, X-rays generally have a wavelength of 0.01 to 10 nm and a frequency of 30×10 15 ~ 30×10 18It is a general term for short-wavelength electromagnetic waves of Hz, and X-ray photography refers to radiography, a method of projecting and displaying the inside of an object to be photographed using the high penetrating power of X-rays.

[0007] An X-ray imaging system consists of an X-ray generator that generates X-rays, and an X-ray detector that is positioned facing the X-ray generator with the subject in between and detects the attenuation of X-rays that pass through the subject.

[0008] As is well known, X-rays, when passing through an object, experience attenuation phenomena such as the photoelectric effect and Compton scattering, depending on the material, density, and thickness of the object. X-ray imaging systems provide images showing the internal structure of the subject based on the accumulated attenuation of X-rays as they pass through the object.

[0009] X-ray detectors are divided into analog and digital types. The analog type combines an X-ray intensifying screen that emits light by X-rays and a silver salt film, and the light from the X-ray intensifying screen creates a latent image on the silver salt film, and then develops the silver salt film to obtain the photographic result. Accordingly, the analog method is gradually decreasing in demand because it consumes a lot of time and money for developing the silver salt film, etc., and it also entails problems with film storage and handling.

[0010] Digital detectors can be divided into the direct conversion type, which uses a scintillator to obtain an indirect electrical signal from visible light, and the direct conversion type, which uses photoconductors to obtain an electrical signal directly from X-rays, depending on the method of obtaining the electrical signal. In addition, depending on the type of device that generates the electrical signal, they can be divided into the CCD method, which uses a charge-coupled device, the CMOS method, which uses a crystalline silicon CMOS device, and the a-Si method, which uses an amorphous silicon TFT (Thin Film Transistor) substrate.

[0011] X-ray detectors utilize two-dimensional sensors to generate digital image data using electrical signals and positional information proportional to the amount of X-ray incident. This method produces near-real-time imaging results, achieves high resolution and a wide dynamic range with relatively little radiation, and, due to the nature of digital data, facilitates easy storage and processing of imaging results.

[0012] The X-ray detector includes a signal extraction unit that reads an electrical signal output from a pixel array, a gate driver that turns on a switching element so that the signal extraction unit can read the electrical signal, and the electrical signal detected by the signal extraction unit is converted into an image signal through a certain processing process in a controller equipped on the main board and then transmitted to a display device for displaying an X-ray image.

[0013] The pixel array, signal readout unit, and gate driver of the X-ray detector are arranged on a support plate, and the main board is arranged on the back of the support plate. The signal readout unit is implemented with a number of film-type ROICs (Read Out ICs), and each ROIC is connected to the main board via a connector.

[0014] However, conventional X-ray detectors have many difficulties in being used in photographing objects with curvature, such as industrial pipes, and there is a need for the development of a bendable X-ray detector that can bend along the outer surface of a photographing target, such as a pipe, in an actual field.

[0015] The present invention provides a bendable X-ray detector having a means for forming a constant radius of curvature in a constant direction, either overall or by section.

[0016] The problems solved by the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0017] A bendable X-ray detector according to one embodiment of the present invention may include: a flexible X-ray detector extending in a first direction and detecting radiation incident on a first surface; a plurality of cover plates provided on both side surfaces of the flexible X-ray detector parallel to the first direction to support the flexible X-ray detector and to be bendable together with the flexible X-ray detector; and a plurality of dual gear plates connecting the plurality of cover plates and controlling bending of the flexible X-ray detector about a bending axis parallel to a second direction intersecting the first direction.

[0018] In the present invention, the flexible X-ray detector can be bent along the first surface, and can be bent in the first direction or in a direction opposite to the first direction.

[0019] In the present invention, the cover plate may include one or two or more flexible X-ray detector fixing parts on the inside of both ends in a second direction intersecting the first direction, and may fix the flexible X-ray detector.

[0020] In the present invention, the series of cover plates may further include end cover plates at the end in the first direction and the end in the opposite direction to the first direction.

[0021] In the present invention, the cover plate includes a first gear engaging portion and a second gear engaging portion on the outer sides of both ends in a second direction intersecting the first direction, and may further include a dual gear plate in the a row of the first gear engaging portion and the second gear engaging portion.

[0022] In the present invention, by further including a dual gear plate in the b row of the first gear fastening portion of the cover plate adjacent to the second gear fastening portion of the cover plate on the outside of the dual gear plate fastened in the a row of the cover plate, the curvatures of the adjacent cover plates can be mutually chain-bound to form an overall uniform curvature radius.

[0023] In the present invention, a gear cover may be further included on the outside of the dual gear plate of the above-mentioned B column.

[0024] In the present invention, a stopper or a clamp is further included in the second gear engaging portion located at the end of the first direction of the b-th row and the first gear engaging portion located at the end opposite to the first direction of the b-th row, and a ratchet gear plate or a lever gear plate is further included in each of the other gear engaging portions, thereby fixing the radius of curvature.

[0025] In the present invention, a single gear plate is further included to prevent gear meshing in either the a column or the b column, thereby forming a curvature radius limit section based on a portion where gear meshing does not occur.

[0026] According to one embodiment of the present invention, a bendable X-ray detector is coupled to an existing flexible X-ray detector to prevent only a specific portion of the flexible X-ray detector from being excessively bent and to induce the formation of an overall uniform radius of curvature.

[0027] It can prevent damage to the product by preventing excessive bending of a specific part, and the continuous constraint of the gear combination can form the curvature uniformly throughout, and because the radius of curvature is uniform, it can also reduce distortion of the captured image by tightly fitting the circular pipe overall.

[0028] According to another embodiment of the present invention, a ratchet gear plate added to the end of the gear combination can keep the gear combination in a bent state by restricting the rotation in one direction, and can release the locked state by pulling the stop when desired.

[0029] Additionally, a lever gear plate and a clamp may be used instead of a ratchet gear plate and a detent to maintain or unlock the bendable X-ray detector in its bended state.

[0030] According to another embodiment of the present invention, the gear combination is bisected and independently constrained in its radius of curvature, and ratchet gear plates added to both ends of the gear combination independently constrain the rotation of the gear combination in one direction to maintain the bent state, and the locked state can be independently released by pulling a stop or releasing a clamp when desired.

[0031] When using a bendable X-ray detector that is manufactured long enough to be able to photograph a specimen with a large diameter, it is impossible to wrap the bendable X-ray detector tightly around a specimen with a small diameter to photograph it if the entire area has a uniform radius of curvature. However, a bendable X-ray detector that divides the area and independently restricts the radius of curvature can make the radius of curvature small by greatly bending only a part of the detector, so that specimens with various diameters can be photographed with a single detector.

[0032] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

[0033] The attached drawings are intended to explain the contents of the present invention in more detail to a person skilled in the art, but the technical idea of ​​the present invention is not limited thereto.

[0034] Figure 1 is a drawing for explaining the structure of a conventional flexible X-ray detector (100).

[0035] Figure 2 is a drawing for explaining the structure of the cover plate (200) of the present invention.

[0036] Figure 3 is a drawing for explaining a method of assembling the components of the present invention.

[0037] Figure 4 is a drawing showing the design conditions of the gear cover (310) to limit the degree of bending of each cover plate (200).

[0038] Figure 5 is a drawing showing the specifications of a dual gear plate (300).

[0039] Figure 6 is a drawing for explaining the fastening structure and function of maintaining a bent state of the ratchet gear plate (320) of the present invention.

[0040] Figure 7 is a drawing showing the operation of the ratchet gear plate (320) of the present invention in a straight state (a) and a bent state (b).

[0041] Figure 8 is a drawing showing the operation of the lever gear plate (321) of the present invention in a straight state (a) and a bent state (b).

[0042] Figure 9 is a drawing for explaining the independent curvature radius limitation section of the present invention and the fastening structure of the ratchet gear plate therefor.

[0043] FIG. 10 is a drawing showing a bent state (a) of the bendable X-ray detector (400) of the present invention, a bent state (b) including a gear cover, and a bent state (c) without including a gear cover (310).

[0044] Fig. 11 is a drawing showing the shape and assembly state of a low-height dual gear plate (300) of the present invention.

[0045] Figure 12 is a drawing showing a case where the cover plate (200) of the present invention is manufactured by dividing it into parts as needed and the parts connecting both sides of the cover plate are omitted.

[0046] Hereinafter, a bendable X-ray detector (400) according to one embodiment of the present invention will be described in detail, but the scope of the bendable X-ray detector (400) is not limited by the following description.

[0047] Throughout the specification, whenever a part is said to “include” a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise stated.

[0048] Below, specific details for implementation are described with reference to the attached drawings.

[0049] Figure 1 is a drawing for explaining the structure of a conventional flexible X-ray detector (100).

[0050] FIG. 1 is a drawing showing a flexible X-ray detector (100) according to one embodiment of the present invention, wherein FIG. 1(a) is a plan view of the flexible X-ray detector viewed from above, and FIG. 1(b) is a plan view of the flexible X-ray detector (100) viewed from the side.

[0051] A flexible X-ray detector (100) according to one embodiment of the present invention extends in a first direction and can detect X-rays incident on a first surface.

[0052] The above flexible X-ray detector (100) may include a flexible X-ray detector support (110) that supports the flexible X-ray detector and is mechanically connected to a flexible X-ray detector support fixing hole (111) to be coupled with the bendable X-ray detector (400) of the present invention; and a flexible X-ray detector image sensor unit (120) that is placed on the flexible X-ray detector support (110).

[0053] The above flexible X-ray detector image support member (110) is made of a material having high rigidity and excellent X-ray transmission characteristics (e.g., Carbon Fiber Reinforced Plastic, CFRP, etc.) and has a flexible X-ray detector support fixing hole (111) formed therein for mechanical connection, and may include not only the flexible X-ray sensor member (120), but also a first circuit member (130) and / or a second circuit member (140), a first connection member (131), a second connection member (141), and / or a third connection member (132), and / or an external interface (150) for power and signal transmission.

[0054] The above flexible X-ray detector image sensor unit (120) may have an indirect structure in which a photodiode is placed on a thin film transistor (TFR) substrate and a fluorescent plate (Gadox or Csl, etc.) is placed thereon, or a direct structure in which a charge collection electrode is placed on a TFT substrate and a photoconductor (a-Se or CdTe, etc.) is placed thereon.

[0055] Figure 2 is a drawing for explaining the structure of the cover plate (200) of the present invention.

[0056] Referring to FIG. 2, on both sides of the cover plate (200), two gear fastening portions (201) are formed, each consisting of a first gear fastening portion (201a) and a second gear fastening portion (201b), so that the dual gear plate (300) and / or the single gear plate (340) of the present invention can be fitted facing outward, and the first gear fastening portion (201a) and the second gear fastening portion (201b) are formed with gear fixing holes (204) that can fix the dual gear plate (300) and / or the single gear plate (340).

[0057] A flexible X-ray detector fixing part (202) capable of fixing the flexible X-ray detector (100) through a mechanical connection is formed on the inside of both sides of the cover plate (200) between the first gear fixing part (201a) and the second gear fixing part (201b), and a flexible X-ray detector fixing hole (203) is formed in each fixing part.

[0058] The flexible X-ray detector fixing part (202) that fixes the above cover plate (200) and the flexible X-ray detector (100) is characterized by being positioned on an imaginary straight line connecting the rotation center of one gear and the rotation center of an adjacent gear.

[0059] In addition, the cover plate (200) should be basically manufactured from a material with high rigidity to prevent deformation, but may include a structure in which a portion is formed as a thin plate so that it can be easily bent and can be covered by another adjacent cover plate (200).

[0060] In addition, each component of the cover plate (200) may be formed as a single body, or may be manufactured by dividing into parts as needed and assembling each part to form one cover plate (200).

[0061] In addition, among the parts of the cover plate (200), the part that protects the second surface opposite the first surface of the flexible X-ray detector (100) may be selectively used or omitted. For example, if the flexible X-ray detector (100) itself is provided with a means for protecting the second surface, the part that protects the second surface opposite the first surface of the flexible X-ray detector (100) may be omitted.

[0062] Figure 3 is a drawing for explaining a method of assembling the components of the present invention.

[0063] Referring to FIG. 3, a plurality of cover plates (200) are arranged in a row side by side, and a dual gear plate (300) can be assembled to the gear fastening portion (201).

[0064] The above plurality of cover plates (200) may be provided on both sides parallel to the first direction of the flexible X-ray detector (100) to support the flexible X-ray detector (100) and may be arranged to be bendable together with the flexible X-ray detector (100).

[0065] The above bending may be performed such that the flexible X-ray detector (100) can be bent around a bending axis that is parallel to a second direction that intersects the first direction. Therefore, unlike a conventional flat panel X-ray detector, the flexible X-ray detector (100) can be bent in one direction or in both directions.

[0066] The cover plate (200) can be assembled in the a row with the dual gear plate (300) to the first gear fastening portion (201a) and the second gear fastening portion (201b) of the cover plate (200), and then the dual gear plate (300) can be assembled in the b row with the second gear fastening portion (201b) of the cover plate (200) and the first gear fastening portion (201a) of the cover plate (200) adjacent to the cover plate (200).

[0067] A plurality of gear combinations connecting between these cover plates (200) can mutually or serially constrain the curvature of adjacent cover plates (200), thereby inducing the flexible X-ray detector (100) to form a uniform radius of curvature overall. Accordingly, one cover plate (200) and its adjacent cover plates (200) can be connected by gear combinations that are meshed in two rows or three or more rows.

[0068] Additionally, to protect the teeth of the gear and the user's hands, a gear cover (310) can be assembled using bolts on the outside of the above-mentioned B row.

[0069] The flexible X-ray detector (100) can be fixed with a bolt in alignment with the flexible X-ray detector fixing hole (203) so that the sensor part (120) of the flexible X-ray detector faces the second surface, thereby fixing the cover plate (200) and the flexible X-ray detector (100) with a bolt or the like.

[0070] In addition, the cover plate (200) may be provided at the end in the first direction and the end in the opposite direction to the first direction, for example, an end cover plate (210) having a different shape from a general cover plate (200) may be used at both ends among a series of cover plates in consideration of the shape and assemblability of the flexible X-ray detector (100).

[0071] In addition, the end cover plate (210) may include a magnet and may be attached to a metal material test object (pipe, etc.).

[0072] Figure 4 is a drawing showing the design conditions of the gear cover (310) to limit the degree of bending of each cover plate (200).

[0073] The design conditions of the above gear cover (310) can be additionally reflected in the design of the cover plate (200).

[0074] Referring to FIG. 4, the gear cover (310) is rectangular overall, and the radius of curvature of two rounded corners sharing one long side is formed to be smaller than the radius of curvature of two rounded corners sharing the other long side, so that the bendable X-ray detector (400) can be bent only in one direction (the direction with the larger radius of curvature) based on the extended state.

[0075] Specifically, as shown in Fig. 4(a), the line segment bo may have the same length as the line segment co, the line segment ao may have a longer length than the line segment bo, and the line segment do may have a longer length than the line segment co. Accordingly, the bendable X-ray detector (400) of the present invention may be bent by an angle θ. In addition, the angle of the upper inclined edge of the gear cover (310) may also be θ, and the angle of the upper inclined edge of the dual gear plate (300) may also be θ, as shown in Fig. 5(b).

[0076] In addition, referring to FIG. 4(b), when the bendable X-ray detector (400) of the present invention is unfolded, the gear cover (310) cannot bend upward because the line segment ao of FIG. 4(a) is longer than the line segment bo, but can bend downward as shown in FIG. 4(c). However, as shown in FIG. 4(d), because the line segment do is longer than the line segment co, it cannot bend downward any further.

[0077] Figure 5 is a drawing showing the specifications of a dual gear plate (300).

[0078] As shown in (a) of Fig. 5, two holes are formed in the center of the dual gear plate (300), and the spacing between them can be the same as the diameter of the pitch circle of the gears formed on both sides of the dual gear plate (300), as shown in (b) and (d) of Fig. 5.

[0079] Specifically, referring to the specifications of the dual gear plate (300) as in FIGS. 5(b) to (d), Modules may be 0.6 mm, No. of Teeth may be 25, Press Angle may be 20 degrees, Pitch Circle may be 15 mm, and Addendum Circle may be 16 mm.

[0080] Figure 6 is a drawing for explaining the fastening structure and function of maintaining a bent state of the ratchet gear plate (320) of the present invention.

[0081] Referring to FIG. 6, the basic shape of the dual gear plate (300) is rectangular, and for example, the number of teeth is odd, and gear teeth can be formed on both sides in a direction in which the gears can be arranged in a straight line in a meshed state.

[0082] The ratchet gear plate (320) of the present invention has gear teeth formed on one side of the dual gear plate (300), the gear specifications and hole spacing are the same as those of the dual gear plate (300), and a ratchet gear is formed on the other side of the ratchet gear plate (320).

[0083] In addition, the gear combination is the same as the embodiment of the gear combination of the a row described in the above FIG. 3, but there is a difference in that a ratchet gear plate (320) and a stopper (330) can be arranged at both ends of the gear combination of the b row described in the above FIG. 3.

[0084] The above ratchet gear is constrained by a stopper (330) and can only rotate in one direction. That is, it bends in one direction and maintains that state, and can be released from the locked state and unfolded by turning the stopper (330).

[0085] Therefore, in order to fix the radius of curvature, the gear combination end (one or more points) of the bendable X-ray detector (400) may further include the ratchet gear plate (320) and the stopper (330).

[0086] FIG. 7 is a drawing showing the operation of the ratchet gear plate (320) of the present invention in a flat state (a) and a bent state (b), and FIG. 8 is a drawing showing the operation of the lever gear plate (321) of the present invention in a flat state (a) and a bent state (b).

[0087] Specifically, the bendable X-ray detector (400) of the present invention further includes a stopper (330) or a clamp (331) at the second gear engaging portion (201b) located at the end of the first direction of the b-th column described in the above FIG. 6 and at the first gear engaging portion (201a) located at the end opposite to the first direction of the b-th column, and further includes a ratchet gear plate (320) or a lever gear plate (321) at each other gear engaging portion, thereby fixing the radius of curvature.

[0088] Figure 9 is a drawing for explaining the independent curvature radius limitation section of the present invention and the fastening structure of the ratchet gear plate (230) therefor.

[0089] Referring to FIG. 9, it is the same as the embodiment for the gear combination of the a column described in FIG. 3, but there is a difference in that a ratchet gear plate (320) and a stopper (330) are arranged at both ends of the gear combination of the b column described in FIG. 3, and two single gear plates (340) are used to connect them in the middle.

[0090] Additionally, the lever gear plate (321) and the fastener (331) may be included instead of the ratchet gear plate (320) and the stopper (330).

[0091] The single gear plate (340) above has gear teeth formed on only one side, and the gear specifications and hole spacing are the same as those of the dual gear plate (300). As shown in Fig. 9, both sides can independently form a curvature radius based on the two single gear plates (340). For example, as shown in Fig. 9, even though part A is not bent based on the two single gear plates (340), part B can be independently bent to form a curvature radius.

[0092] Accordingly, in order to form a uniform radius of curvature for each section, the present invention includes a ratchet gear plate (320) at both ends of the gear combination of the bendable X-ray detector (400), and one of the gear combinations of the two rows (row a and row b) can be replaced with the single gear plate (340), which is a component in which gear meshing does not occur.

[0093] In this way, the curvature radius limit section can be divided based on the area where the gears do not mesh. Accordingly, the curvature radius limit section of the bendable X-ray detector (400) can be divided into two or more sections as needed.

[0094] FIG. 10 is a drawing showing a bent state (a) of a bendable X-ray detector (400) of the present invention, a bent state (b) including a gear cover (310), and a bent state (c) not including a gear cover (310).

[0095] Referring to Fig. 10, the image of the bent state (b) including the gear cover (310) is a final image of normal assembly, and the image of the bent state (c) without the gear cover (310) is an image of the gear cover (310) removed so that the meshing shape of the gear can be confirmed in the bent state.

[0096] Fig. 11 is a drawing showing the shape and assembly state of a low-height dual gear plate of the present invention.

[0097] Referring to FIG. 11, a low-height gear plate can be used to create a thin bendable X-ray detector (400).

[0098] In this case, the diameter of the gear pitch circle (or the distance between the centers of the two holes) may be greater than the height of the dual gear plate (300), and when bent, the gear teeth of the dual gear plate (300) are exposed. To prevent this, the gear plate may be manufactured in a shape in which both sides are cut off at a certain angle.

[0099] Figure 12 is a drawing showing a case where the cover plate (200) of the present invention is manufactured by dividing it into parts as needed and the parts connecting both sides of the cover plate are omitted.

[0100] Referring to FIG. 12, the cover plate (200) fixes the dual gear plate (300) and fixes it to the flexible X-ray detector (100) from the side, and a plate crossing the cover plate (200) may not be used.

[0101] Although the detailed description of the present invention has been made by way of an embodiment with reference to the attached drawings, the above-described embodiment is only a preferred example of the present invention, and therefore the present invention should not be understood as being limited to the above-described embodiment, and the scope of the rights of the present invention should be understood by the claims and their equivalent concepts.

[0102] The present invention can be widely applied to plates or sheets used in a curved state.

Claims

1. A flexible X-ray detector extending in a first direction and detecting radiation incident on a first surface; A plurality of cover plates provided on both sides parallel to the first direction of the flexible X-ray detector to support the flexible X-ray detector and to be bendable together with the flexible X-ray detector; and A bendable X-ray detector, comprising: a plurality of dual gear plates connecting the plurality of cover plates and controlling bending of the flexible X-ray detector about a bending axis parallel to a second direction intersecting the first direction; 2. In paragraph 1, A bendable X-ray detector, wherein the flexible X-ray detector is bendable along the first surface and is bendable in the first direction or in a direction opposite to the first direction.

3. In paragraph 1, A bendable X-ray detector, wherein the cover plate includes one or more flexible X-ray detector fixing parts on the inside of both ends in a second direction intersecting the first direction, and fixes the flexible X-ray detector.

4. In paragraph 1, A bendable X-ray detector, wherein the series of cover plates further includes an end cover plate at an end in the first direction and an end in a direction opposite to the first direction.

5. In paragraph 1, A bendable X-ray detector, wherein the cover plate includes a first gear engaging portion and a second gear engaging portion on the outer sides of both ends in a second direction intersecting the first direction, and further includes a dual gear plate in the a row of the first gear engaging portion and the second gear engaging portion.

6. In paragraph 5, A bendable X-ray detector, wherein a dual gear plate is further included in the b row of the first gear fastening portion of the cover plate adjacent to the second gear fastening portion of the cover plate outside the dual gear plate fastened in the a row of the cover plate, thereby mutually chainingly restraining the curvature of the adjacent cover plates to form an overall uniform radius of curvature.

7. In paragraph 6, A bendable X-ray detector further comprising a gear cover on the outer side of the dual gear plate of the above-mentioned column b.

8. In paragraph 6, A bendable X-ray detector, wherein the second gear engaging portion located at the end of the first direction of the above-mentioned b-th row and the first gear engaging portion located at the end opposite to the first direction of the above-mentioned b-th row further include a stopper or a clamp, and wherein each of the other gear engaging portions further includes a ratchet gear plate or a lever gear plate, thereby fixing the radius of curvature.

9. In paragraph 6, A bendable X-ray detector, wherein a single gear plate is further included to prevent gear meshing in either the a column or the b column, thereby forming a curvature radius limit section based on a section where gear meshing does not occur.

Images