Flat panel detector and detection equipment

Abstract

The utility model discloses a flat panel detector and detection equipment. The flat panel detector comprises a shell, a light-transmitting cover plate, a first electromagnetic protection part and a photoelectric sensor, the shell is provided with an inner cavity and a first opening communicated with the inner cavity, the shell is provided with a groove surrounding the first opening, the light-transmitting cover plate is installed in the groove and covers the first opening, the edge of the light-transmitting cover plate is supported on the bottom wall of the groove, and at least part of the first electromagnetic protection piece surrounds the first opening and is arranged between the edge of the light-transmitting cover plate and the bottom wall of the groove. The photoelectric sensor is arranged in the inner cavity and faces the light-transmitting cover plate. According to the scheme, the problem that the normal work of the flat panel detector is interfered due to the fact that external electromagnetic signals easily intrude into the flat panel detector in related technologies can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of detection equipment design, and specifically relates to a flat panel detector and detection equipment. Background Art

[0002] Flat-panel detectors (FPDs) are widely used in various fields, such as medical imaging and industrial inspection. During operation, FPDs are typically installed in inspection equipment, receiving optical signals and converting them into electrical signals to generate images. During use, other electronic components in the inspection equipment generate electromagnetic signals, which can easily intrude into the FPD and interfere with its operation. Utility Model Content

[0003] The utility model discloses a flat panel detector and a detection device, which are used to alleviate the problem in the flat panel detector involved in the related art that external electromagnetic signals easily invade the inside of the flat panel detector and interfere with the normal operation of the flat panel detector.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] In a first aspect, the present application discloses a flat panel detector, the disclosed flat panel detector comprising a housing, a light-transmitting cover, a first electromagnetic shield, and a photoelectric sensor;

[0006] The shell has an inner cavity and a first opening connected to the inner cavity. The shell is provided with a groove surrounding the first opening. The light-transmitting cover is installed in the groove and covers the first opening. The edge of the light-transmitting cover is supported on the bottom wall of the groove. At least part of the first electromagnetic shield surrounds the first opening and is provided between the edge of the light-transmitting cover and the bottom wall of the groove. The photoelectric sensor is provided in the inner cavity and faces the light-transmitting cover.

[0007] In a second aspect, the present application discloses a detection device, which includes the flat panel detector described above.

[0008] The technical solution adopted by the utility model can achieve the following technical effects:

[0009] The flat-panel detector disclosed in the embodiment of the present application improves the structure of the flat-panel detector involved in the related art, by providing a first electromagnetic shielding member, and by providing at least a portion of the first electromagnetic shielding member around the first opening, and at least a portion of the first electromagnetic shielding member is provided between the edge of the transparent cover plate and the bottom wall of the groove. This enables the first electromagnetic shielding member to block the assembly gap that is easily generated between the edge of the transparent cover plate and the bottom wall of the groove during the assembly process, thereby preventing electromagnetic signals outside the flat-panel detector from entering the inner cavity of the flat-panel detector from between the transparent cover plate and the bottom wall of the groove through the first electromagnetic shielding member, thereby achieving electromagnetic protection, and further alleviating the problem that external electromagnetic signals can easily invade the interior of the flat-panel detector and easily interfere with the normal operation of the flat-panel detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of a flat panel detector disclosed in an embodiment of the present application;

[0011] Figure 2 It is a partial structural diagram of the flat panel detector disclosed in the embodiment of the present application;

[0012] Figure 3 is a schematic diagram of another portion of the structure of the flat panel detector disclosed in an embodiment of the present application;

[0013] Figure 4 This is another schematic diagram of the structure of a flat panel detector disclosed in an embodiment of the present application;

[0014] Figure 5 This is another partial structural diagram of the flat panel detector disclosed in the embodiment of the present application.

[0015] Description of reference numerals:

[0016] 100-shell, 110-first opening, 120-frame, 121 second opening, 122-frame body, 123-bracket, 124-isolation rib, 130-inner cavity, 140-groove, 150-back cover,

[0017] 200-translucent cover,

[0018] 310 - first electromagnetic protection element, 320 - second electromagnetic protection element, 330 - third electromagnetic protection element, 340 - fourth electromagnetic protection element, 350 - fifth electromagnetic protection element,

[0019] 400-photoelectric sensor,

[0020] 500 - circuit board assembly, 510 - first sub-circuit board assembly, 520 - second sub-circuit board assembly, 530 - circuit board, 540 - second shielding cover, 550 - third shielding cover. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "first," "second," and the like generally distinguish objects of a class and do not limit the number of objects. For example, the first object may be one or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0024] Please refer to Figures 1 to 5 The embodiment of the present application discloses a flat panel detector, which includes a housing 100 , a light-transmitting cover 200 , a first electromagnetic shield 310 , and a photoelectric sensor 400 .

[0025] The housing 100 is the foundation of the flat panel detector, providing a mounting base for the other components of the flat panel detector. The first electromagnetic shield 310 and the photoelectric sensor 400 are both located within the inner cavity 130 of the housing 100. Furthermore, the housing 100 also forms several functional spaces or structures, such as the first opening 110, the frame 120, the inner cavity 130, and the groove 140.

[0026] The transparent cover plate 200 is used to allow the detection light to pass through, so that the detection light can pass through the transparent cover plate 200 and be projected into the inner cavity 130. The housing 100 has an inner cavity 130 and a first opening 110 connected to the inner cavity 130. The housing 100 is provided with a groove 140 surrounding the first opening 110, and the groove 140 is connected to the first opening 110. The transparent cover plate 200 is installed in the groove 140 and covers the first opening 110 to prevent dust or moisture in the external environment of the flat panel detector from entering the inner cavity 130 through the first opening 110, which may easily cause contamination of the inner cavity 130, and can protect the components in the inner cavity 130. The edge of the transparent cover plate 200 is supported on the bottom wall of the groove 140 to facilitate the installation of the transparent cover plate 200. In addition, the detection light can be X-rays, gamma rays, etc., which are not limited in this embodiment of the present application.

[0027] The first electromagnetic shield 310 is the core component for electromagnetic protection in the flat panel detector. At least a portion of the first electromagnetic shield 310 surrounds the first opening 110 and is positioned between the edge of the transparent cover 200 and the bottom wall of the groove 140. This prevents electromagnetic signals from entering the flat panel detector's inner cavity 130 through the gap between the transparent cover 200 and the bottom wall of the groove 140.

[0028] The photoelectric sensor 400 is used to receive the detection light and to convert the optical signal into an electrical signal so as to generate an image. The photoelectric sensor 400 is arranged in the inner cavity 130 and faces the transparent cover 200, so that the detection light passes through the transparent cover 200 and enters the inner cavity 130 and is projected onto the photoelectric sensor 400, so that the photoelectric sensor 400 can receive the detection light, and then the photoelectric sensor 400 can convert the optical signal into an electrical signal so as to generate an image. At the same time, in this case, the first electromagnetic shield 310 can prevent the electromagnetic signal from entering the inner cavity 130 between the transparent cover 200 and the bottom wall of the groove 140 to interfere with the photoelectric sensor 400. Specifically, the photoelectric sensor 400 can be a sensing glass or a photosensitive processing unit, etc., and the embodiment of the present application is not limited to this.

[0029] In the embodiment of the present application, the light-transmitting cover plate 200 may be a carbon fiber plate. This structure has high strength and rigidity while being lightweight. This allows the light-transmitting cover plate 200 to provide good support while avoiding significantly increasing the weight of the flat-panel detector. Of course, the light-transmitting cover plate 200 may also be a polycarbonate plate, which helps reduce costs.

[0030] The flat-panel detector disclosed in the embodiment of the present application improves the structure of the flat-panel detector involved in the related art by providing a first electromagnetic shield 310, and by providing at least a portion of the first electromagnetic shield 310 around the first opening 110, and at least a portion of the first electromagnetic shield 310 is provided between the edge of the transparent cover 200 and the bottom wall of the groove 140. This enables the first electromagnetic shield 310 to block the assembly gap that is easily generated between the edge of the transparent cover 200 and the bottom wall of the groove 140 during the assembly process, thereby preventing electromagnetic signals outside the flat-panel detector from entering the inner cavity of the flat-panel detector from between the transparent cover 200 and the bottom wall of the groove 140 through the first electromagnetic shield 310, thereby achieving electromagnetic protection, and further alleviating the problem that external electromagnetic signals easily invade the interior of the flat-panel detector and easily interfere with the normal operation of the flat-panel detector.

[0031] In one embodiment, the first electromagnetic shielding member 310 may be an electromagnetic shielding ring. In this case, the first electromagnetic shielding member 310 may surround the first opening 110 , thereby facilitating cost savings.

[0032] Of course, in other embodiments, the first electromagnetic shielding member 310 may also be an electromagnetic shielding plate or an electromagnetic shielding film. In this case, the first electromagnetic shielding member 310 may partially surround the first opening 110 and may cover the first opening 110. In this structure, the first electromagnetic shielding member 310 can prevent electromagnetic signals in the external environment of the flat panel detector from entering the inner cavity 130 of the flat panel detector through the space between the transparent cover plate 200 and the bottom wall of the groove 140. At the same time, it can also more effectively prevent electromagnetic signals in the external environment of the flat panel detector from passing through the transparent cover plate 200 and entering the inner cavity 130 through the first opening 110, thereby providing more effective electromagnetic protection.

[0033] In an optional technical solution, the first electromagnetic shield 310 and the second electromagnetic shield 320, third electromagnetic shield 330, fourth electromagnetic shield 340, and fifth electromagnetic shield 350 described below can each achieve electromagnetic protection by shielding electromagnetic signals or by absorbing electromagnetic signals. Specifically, the first electromagnetic shield 310, the second electromagnetic shield 320, the third electromagnetic shield 330, the fourth electromagnetic shield 340, and the fifth electromagnetic shield 350 can all be made of ferrite, silicon carbide, graphene, carbon fiber, or a conductive polymer. In addition, the first electromagnetic shield 310, the second electromagnetic shield 320, the third electromagnetic shield 330, the fourth electromagnetic shield 340, and the fifth electromagnetic shield 350 can all be solid-state or fluid structures, which is not limited in this embodiment of the present application.

[0034] In a feasible technical solution, the flat-panel detector may further include a second electromagnetic shield 320 , the shell 100 includes a frame 120 and a rear cover 150 , the frame 120 is provided with a first opening 110 and a second opening 121 opposite thereto, that is, the first opening 110 and the second opening 121 may be respectively distributed at opposite ends of the frame 120 , of course, the groove 140 may also be provided in the frame 120 , in which case the light-transmitting cover 200 may be connected to the frame 120 .

[0035] The rear cover 150 blocks the second opening 121 to prevent dust, water vapor, etc. in the external environment of the flat panel detector from entering the inner cavity 130 through the second opening 121 and easily contaminating the inner cavity 130. The rear cover 150 can also protect the components in the inner cavity 130. At the same time, the rear cover 150 can also isolate the electromagnetic signals in the external environment of the flat panel detector to a certain extent.

[0036] The frame 120 and the rear cover 150 enclose an inner cavity 130. The second electromagnetic shield 320 is disposed within the inner cavity 130 and covers the rear cover 150. This allows for more effective electromagnetic protection through the second electromagnetic shield 320, reducing the risk of electromagnetic signals from the flat-panel detector's external environment passing through the rear cover 150 and entering the inner cavity 130, thereby impacting the normal operation of the flat-panel detector. Specifically, the frame 120 and the rear cover 150 can both be made of metal or an alloy, thereby minimizing the risk of electromagnetic signals from the flat-panel detector's external environment entering the inner cavity 130. This structure also helps improve the overall strength of the housing 100.

[0037] In a further technical solution, the frame 120 may include a connected frame body 122 and a bracket 123. Specifically, the frame body 122 and the bracket 123 may be an integrated structure or a separate structure, which is not limited in the present embodiment. The first opening 110 and the second opening 121 may be respectively provided at opposite ends of the frame body 122, and the groove 140 may also be provided in the frame body 122. The light-transmitting cover plate 200 may be connected to the frame body 122, and the frame body 122 and the rear cover plate 150 may enclose an inner cavity 130.

[0038] The bracket 123 can be arranged in the inner cavity 130, and the photoelectric sensor 400 is also arranged in the inner cavity 130, and can face the transparent cover 200 to facilitate receiving the detection light that passes through the transparent cover 200 and is projected into the inner cavity 130. In this case, the photoelectric sensor 400 can be arranged on the side opposite to the bracket 123 and the transparent cover 200, that is, the photoelectric sensor 400 can be arranged between the bracket 123 and the transparent cover 200. In this structure, the bracket 123 can provide an installation base for the photoelectric sensor 400 to facilitate the fixation of the photoelectric sensor 400.

[0039] Specifically, since the first opening 110 and the second opening 121 can be respectively arranged at the two opposite ends of the frame body 122, and the transparent cover 200 and the back cover 150 are respectively arranged at the first opening 110 and the second opening 121, the transparent cover 200 and the back cover 150 can be respectively arranged on the two opposite sides of the bracket 123, and the photoelectric sensor 400 can be arranged on the side opposite to the bracket 123 and the transparent cover 200. That is, the bracket 123 can be arranged between the photoelectric sensor 400 and the back cover 150, that is, the photoelectric sensor 400 and the back cover 150 can be respectively arranged on the two opposite sides of the bracket 123, and the photoelectric sensor 400 can be arranged between the bracket 123 and the transparent cover 200.

[0040] In a feasible technical solution, the flat panel detector may further include a third electromagnetic shield 330 and a circuit board assembly 500. Both the third electromagnetic shield 330 and the circuit board assembly 500 may be disposed on the side of the bracket 123 opposite the rear cover 150. Specifically, the third electromagnetic shield 330 and the circuit board assembly 500 may be disposed on the side of the bracket 123 opposite the photoelectric sensor 400. The third electromagnetic shield 330 may be disposed on the surface of the bracket 123 opposite the photoelectric sensor 400. The third electromagnetic shield 330 may be located between the bracket 123 and the circuit board assembly 500, thereby preventing electromagnetic interference from the circuit board assembly 500 on the photoelectric sensor 400 and providing more effective electromagnetic protection for the photoelectric sensor 400. Furthermore, the circuit board assembly 500 and the photoelectric sensor 400 may be electrically connected, thereby enabling signal transmission between the circuit board assembly 500 and the photoelectric sensor 400.

[0041] In one embodiment, the circuit board assembly 500 may include a first sub-circuit board assembly 510 and a second sub-circuit board assembly 520. The first sub-circuit board assembly 510 and the second sub-circuit board assembly 520 may be spaced apart and may be respectively connected to the bracket 123. Of course, the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520 may be electrically connected to achieve signal transmission between the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520.

[0042] In this structure, by separating sensitive circuits such as high-frequency signal circuits, analog signal circuits and digital signal circuits into the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520, mutual interference between different signals can be reduced, and it is also easier to carry out specialized electromagnetic shielding design based on the characteristics of various circuits in the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520.

[0043] Exemplarily, the circuit board assembly 500 may also include a first shielding cover, which may be connected to the bracket 123 and may be covered on the first sub-circuit board assembly 510 or the second sub-circuit board assembly 520 to isolate the electromagnetic interference generated by the first sub-circuit board assembly 510 or the second sub-circuit board assembly 520, thereby preventing the first sub-circuit board assembly 510 or the second sub-circuit board assembly 520 from interfering with the photoelectric sensor 400, thereby facilitating improving the working stability of the photoelectric sensor 400, and preventing the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520 from interfering with each other, thereby facilitating improving the working stability of the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520.

[0044] When the second sub-circuit board assembly 520 includes a high-frequency signal circuit, the second sub-circuit board assembly 520 can be electromagnetically shielded by the first shielding cover to alleviate the interference of the second sub-circuit board assembly 520 on the first sub-circuit board assembly 510 and the photoelectric sensor 400.

[0045] Optionally, the frame 120 may further include an isolation rib 124, and the isolation rib 124 may be connected to the frame body 122. Specifically, the isolation rib 124 and the frame body 122 may be an integrated structure or a split structure. When the isolation rib 124 and the frame body 122 are a split structure, the isolation rib 124 and the frame body 122 may be connected by welding, bonding or snapping.

[0046] The isolation rib 124 can be supported between the rear cover plate 150 and the bracket 123, and the isolation rib 124 can be located between the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520 to isolate the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520, thereby isolating the electromagnetic signals between the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520 to avoid mutual interference between the two, which is beneficial to improving the working stability of the first sub-circuit board assembly 510 and the second sub-circuit board assembly 520.

[0047] When the second sub-circuit board assembly 520 includes a high-frequency signal circuit, the third electromagnetic shield 330 can be opposite to the second sub-circuit board assembly 520. Furthermore, since the third electromagnetic shield 330 can be located on the side of the bracket 123 opposite to the rear cover 150 and between the bracket 123 and the circuit board assembly 500, and the photoelectric sensor 400 can be located on the side of the bracket 123 opposite to the rear cover 150, the third electromagnetic shield 330 can more effectively mitigate the impact on the second sub-circuit board assembly 520. Furthermore, to save materials and reduce costs, the third electromagnetic shield 330 can be arranged away from the first sub-circuit board assembly 510.

[0048] In the embodiment of the present application, the circuit board assembly 500 may further include a circuit board 530, a second shielding cover 540, a third shielding cover 550, and electronic components. The electronic components may be disposed on the circuit board 530, and the second shielding cover 540 and the third shielding cover 550 may be disposed on opposite sides of the circuit board 530, that is, the second shielding cover 540 and the third shielding cover 550 may be disposed on opposite sides of the circuit board 530, and the two may be opposite to each other. The second shielding cover 540 or the third shielding cover 550 may be disposed on the electronic components to isolate the electromagnetic interference generated by the electronic components. Specifically, the second shielding cover 540 and the third shielding cover 550 may be disposed on opposite sides of the circuit board 530 by means of clipping or welding.

[0049] As described above, in this case, the electronic components may be used to generate high-frequency signals, and the second shielding cover 540 and the third shielding cover 550 can isolate the electromagnetic interference generated by the electronic components, thereby preventing it from affecting other components on the circuit board 530. In addition, in this structure, there is a risk that the electromagnetic interference generated by the electronic components will pass through the circuit board and affect other components on the circuit board 530. The second shielding cover 540 and the third shielding cover 550 can be respectively arranged on opposite sides of the circuit board 530, so that the electromagnetic interference generated by the electronic components can still be shielded by the second shielding cover 540 or the third shielding cover 550 after passing through the circuit board 530, thereby more effectively isolating the electromagnetic interference generated by the electronic components.

[0050] In a further technical solution, the flat panel detector may further include a fourth electromagnetic shielding member 340 and a fifth electromagnetic shielding member 350. The fourth electromagnetic shielding member 340 and the fifth electromagnetic shielding member 350 may respectively cover at least two opposite surfaces of the second shielding cover 540 and the third shielding cover 550, wherein one of the two opposite surfaces of the second shielding cover 540 and the third shielding cover 550 may face the transparent cover 200, and the other may face the rear cover 150. This structure is conducive to improving the electromagnetic isolation capability of the second shielding cover 540 and the third shielding cover 550, so as to more effectively isolate the electromagnetic interference generated by electronic components, and at the same time, better protect the electromagnetic signals invading the inner cavity 130 from the side where the transparent cover 200 is located, and better protect the electromagnetic signals invading the inner cavity 130 from the side where the rear cover 150 is located.

[0051] Of course, in other embodiments, the fourth electromagnetic protection component 340 and the fifth electromagnetic protection component 350 can be completely covered on the surface of the second shielding cover 540 and the third shielding cover 550 respectively, so as to more effectively avoid the electromagnetic interference generated by the electronic components, so as to further improve the electromagnetic isolation capability of the second shielding cover 540 and the third shielding cover 550, and more effectively avoid the electromagnetic interference caused by the electromagnetic signals invading the inner cavity 130 to the electronic components.

[0052] Based on the flat panel detector disclosed in the embodiments of the present application, the present application further discloses a detection device, and the disclosed detection device includes the flat panel detector described in any one of the above embodiments.

[0053] Optionally, the detection device may further include an equipment rack, and the flat-panel detector may be arranged on the equipment rack so as to fix the flat-panel detector. The equipment rack may include a detection channel, and the detection light may be projected onto the light-transmitting cover plate 200 through the detection channel, and then pass through the light-transmitting cover plate 200 to be projected onto the photoelectric sensor 400.

[0054] In the embodiment of the present application, the detection equipment can be medical imaging equipment, security inspection equipment, industrial non-destructive testing equipment or food testing equipment, etc. The embodiment of the present application does not limit the specific type of the detection equipment.

[0055] The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0056] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A flat panel detector, characterized in that: It comprises a housing (100), a light-transmitting cover plate (200), a first electromagnetic protection element (310), and a photoelectric sensor (400); The shell (100) has an inner cavity (130) and a first opening (110) communicating with the inner cavity (130); the shell (100) is provided with a groove (140) surrounding the first opening (110); the light-transmitting cover (200) is installed in the groove (140) and covers the first opening (110); the edge of the light-transmitting cover (200) is supported on the bottom wall of the groove (140); at least a portion of the first electromagnetic shield (310) surrounds the first opening (110) and is provided between the edge of the light-transmitting cover (200) and the bottom wall of the groove (140); the photoelectric sensor (400) is provided in the inner cavity (130) and faces the light-transmitting cover (200).

2. The flat panel detector according to claim 1, wherein: The flat panel detector further comprises a second electromagnetic shield (320); the housing (100) comprises a frame (120) and a rear cover (150); the frame (120) is provided with the first opening (110) and a second opening (121) opposite thereto; the rear cover (150) blocks the second opening (121); the frame (120) and the rear cover (150) enclose the inner cavity (130); the second electromagnetic shield (320) is provided in the inner cavity (130) and covers the rear cover (150).

3. The flat panel detector according to claim 2, wherein: The frame (120) comprises a frame body (122) and a bracket (123) connected to each other; The first opening (110) and the second opening (121) are respectively provided at opposite ends of the frame body (122); the frame body (122) and the rear cover plate (150) enclose the inner cavity (130); The bracket (123) is arranged in the inner cavity (130), and the photoelectric sensor (400) is arranged on a side of the bracket (123) opposite to the light-transmitting cover plate (200).

4. The flat panel detector according to claim 3, characterized in that: The flat panel detector further comprises a third electromagnetic shield (330) and a circuit board assembly (500), wherein the third electromagnetic shield (330) and the circuit board assembly (500) are both arranged on a side of the bracket (123) opposite to the rear cover (150), the third electromagnetic shield (330) is located between the bracket (123) and the circuit board assembly (500), and the circuit board assembly (500) is electrically connected to the photoelectric sensor (400).

5. The flat panel detector according to claim 4, characterized in that: The circuit board assembly (500) comprises a first sub-circuit board assembly (510) and a second sub-circuit board assembly (520); the first sub-circuit board assembly (510) and the second sub-circuit board assembly (520) are arranged at intervals and are respectively connected to the bracket (123).

6. The flat panel detector according to claim 5, characterized in that: The frame (120) further includes an isolation rib (124), the isolation rib (124) being connected to the frame body (122), the isolation rib (124) being supported between the rear cover (150) and the bracket (123), and the isolation rib (124) being located between the first sub-circuit board assembly (510) and the second sub-circuit board assembly (520) to isolate the first sub-circuit board assembly (510) from the second sub-circuit board assembly (520).

7. The flat panel detector according to claim 5, characterized in that: The circuit board assembly (500) further comprises a first shielding cover, the first shielding cover being connected to the bracket (123) and covering the first sub-circuit board assembly (510) or the second sub-circuit board assembly (520).

8. The flat panel detector according to claim 4, wherein: The circuit board assembly (500) further comprises a circuit board (530), a second shielding cover (540), a third shielding cover (550) and electronic components, wherein the electronic components are arranged on the circuit board (530), the second shielding cover (540) and the third shielding cover (550) are respectively arranged on opposite sides of the circuit board (530), and the second shielding cover (540) or the third shielding cover (550) is arranged to cover the electronic components.

9. The flat panel detector according to claim 8, characterized in that: The flat panel detector further comprises a fourth electromagnetic shielding member (340) and a fifth electromagnetic shielding member (350), wherein the fourth electromagnetic shielding member (340) and the fifth electromagnetic shielding member (350) respectively cover at least two opposite surfaces of the second shielding cover (540) and the third shielding cover (550).

10. A detection device, characterized in that: The flat panel detector comprises the flat panel detector according to any one of claims 1 to 9.

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