Air suction assembly and detector
By designing the slots of the getter side into the support seat and setting multiple slots on the support seat of the same size, the problem of large area occupied by the getter horizontal placement is solved, achieving a more efficient intake effect and a smaller detector size.
Patent Information
- Application Number
- CN202510099730.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-05-16
AI Technical Summary
In the ceramic packaging structure of the existing non-refrigeration infrared detector, the horizontal placement of getter leads to a large area of occupancy, which in turn makes the detector size larger.
A getter assembly is designed in which the getter is in a long sheet-like structure and is inserted sideways through the slots of the support seat, using the thickness of the getter to occupy space, reducing area occupancy, and by designing multiple slots to set more getters to improve the getter efficiency.
The design of side insertion significantly reduces the space occupied by the getter, improves the intake efficiency, and maintains the high vacuum state inside the detector for a longer period of time and reduces the detector size.
Smart Images
Figure CN120018640A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of detector packaging, in particular to an air intake component and a detector. Background Art
[0002] The ceramic packaging structure currently used in uncooled infrared detectors generally includes: ceramic tube shell, chip, boss, getter, window. The chip is located on the inner surface of the vacuum cavity of the ceramic tube shell and is in surface contact with the ceramic tube shell. The boss is located at one end of the tube shell and is fixed to the tube shell. The getter is located on the upper surface of the boss. The window is located on the top surface of the tube shell. A vacuum cavity is formed by the window and the ceramic tube shell. The getter plays a role in maintaining the vacuum of the cavity after activation. Figure 1 and Figure 2 As shown, the conventional method is to weld a piece of getter in the tube shell cavity, and the getter and the chip are laid flat on the inner surface of the tube shell in parallel. When the getter is placed horizontally, it has a certain width. Under the premise of ensuring vacuum reliability, the getter will occupy a large area, thereby increasing the size of the detector. Summary of the invention
[0003] The object of the present invention is to provide an air intake assembly and a detector, which can at least solve some of the defects in the prior art.
[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides the following technical solution: an air getter component, including an air getter, and also including a support seat for mounting the air getter, the air getter is in a long sheet structure, the support seat has a slot with a slot width matching the thickness of the air getter, and the side of the air getter is inserted into the slot.
[0005] Furthermore, the support base has a plurality of slots, and the getter is inserted into at least one of the slots.
[0006] Furthermore, each of the slots is arranged side by side along the horizontal direction of the support seat, and there are multiple getters, and each of the getters is vertically arranged in each of the slots.
[0007] Furthermore, each of the slots is stacked along the height direction of the support seat, and there are a plurality of getters, each of the getters is stacked in each of the slots.
[0008] Furthermore, the support seat includes two bosses, the two bosses are arranged at an interval, each of the bosses is provided with the slot, and the two ends of the getter are respectively inserted into the slots of the two bosses.
[0009] Furthermore, there are multiple groups of support seats.
[0010] Furthermore, the getter is welded to the slot.
[0011] An embodiment of the present invention provides another technical solution: a detector, comprising a detector chip and a tube shell with an inner cavity, and also comprising the above-mentioned getter assembly, wherein the detector chip, the support seat and the getter are all located in the inner cavity of the tube shell.
[0012] Furthermore, a portion of the bottom plate in the tube shell is recessed to form a sink, and the support seat is arranged in the sink.
[0013] Furthermore, the top of the tube shell is open and a window is provided at the opening.
[0014] Compared with the prior art, the beneficial effects of the present invention are: by limiting the slot width of the support seat slot to match the thickness of the getter, the sheet-shaped getter can be inserted into the slot of the support seat from the side. Compared with the conventional horizontal placement of the getter, the space occupied by the getter can be greatly reduced. From another perspective, on a support seat of the same size, by designing multiple slots, a larger number of getters can be set, thereby greatly improving the suction efficiency, maintaining the high vacuum state inside the detector for a longer time, ensuring product performance, and when the getter component is used in the detector, the size of the detector can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a vertical cross-sectional view of the existing detector;
[0016] Figure 2 A schematic diagram of a top-down view of an existing detector (windows not shown);
[0017] Figure 3 An exploded diagram of a detector provided by an embodiment of the present invention;
[0018] Figure 4 A schematic diagram of the cooperation between the tube shell and the support base provided in an embodiment of the present invention;
[0019] Figure 5 for Figure 4 Schematic diagram of inserting a getter;
[0020] Figure 6 A schematic diagram of a top-down view of a detector provided in an embodiment of the present invention (windows not shown);
[0021] In the accompanying drawings: 1-window; 2-chip; 3-getter; 4-boss; 5-tube shell. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] See also Figures 3 to 6 , an embodiment of the present invention provides an air-inhaling component, including an air-inhaling agent 3 and a support seat for mounting the air-inhaling agent 3, wherein the air-inhaling agent 3 is in the form of a long sheet, and the support seat has a slot whose width matches the thickness of the air-inhaling agent 3, and the side of the air-inhaling agent 3 is inserted into the slot. In this embodiment, by limiting the slot width of the support seat slot to match the thickness of the air-inhaling agent 3, the sheet-like air-inhaling agent 3 can be inserted into the slot of the support seat from the side. Compared with the conventional method of placing the air-inhaling agent 3 horizontally, the space occupied by the air-inhaling agent 3 can be greatly reduced. Moreover, from another perspective, on a support seat of the same size, by designing multiple slots, a larger number of air-inhaling agents 3 can be arranged, thereby greatly improving the air-inhaling efficiency. Specifically, as Figure 1 and Figure 2 As shown, the conventional getter 3 is horizontally arranged on the support seat. In the tube shell 5, the horizontal getter 3 will occupy the limited space in the tube shell 5 together with the chip 2. If the getter 3 is to achieve a better effect, the width of the getter 3 cannot be too small, which will inevitably occupy the space in the tube shell 5 and cause the tube shell 5 to be adaptively enlarged, thereby increasing the volume of the detector. This embodiment cleverly utilizes the original shape characteristics of the getter 3, that is, the large format or large horizontal width but thin characteristics, and pre-designs a slot on the support seat with a groove width that matches the thickness of the getter 3, so that the sheet-like getter 3 can be inserted from the side direction, such as Figure 5 In the state shown, the getter 3 is inserted into the slot, so that the getter 3 uses its thickness to occupy the space in the tube shell 5, which greatly saves the occupied space compared to using the horizontal width to occupy the space. Correspondingly, the support base can also be reduced in size, and the space occupied in the tube shell 5 is truly reduced under the same air intake conditions as the prior art. From another perspective, since the slot width is adapted to the thickness of the getter 3, multiple slots can be designed on the support base of the same size as the prior art, so that multiple getters 3 can be selectively inserted as needed, which can greatly improve the air intake efficiency.
[0024] See also Figures 3 to 6 , each of the slots is arranged side by side along the horizontal direction of the support seat, and there are multiple getters 3, each of the getters 3 is vertically arranged in each of the slots. In this embodiment, one of the forms of installing the getters 3 is refined, that is, Figure 5 As shown, the limiting slots are arranged side by side along the horizontal direction of the support seat. If there are multiple getters 3, each getter 3 can also be arranged as shown in FIG. Figure 5 As shown, they are arranged side by side in each slot, Figure 5 Two getters 3 are shown. Of course, in other embodiments, since the getters 3 are in the form of long strips, the vertically arranged getters 3 are not limited to Figure 5 This way, for example, we will Figure 5 The state shown is defined as a horizontal state, and the getter 3 can also be in a vertical state, that is, the getter 3 is moved from Figure 5 The direction shown is rotated upward by 90 degrees to a vertical state, so that the height space of the tube shell 5 can be used to set the getter 3. If the height space of the tube shell 5 is insufficient, the length of the getter 3 can be appropriately shortened, and more support seats can be set to accommodate more getters 3, so that the quality of the air intake can also be guaranteed. Figure 5 Two bosses 4 are shown, and we can also design more bosses 4 between the two bosses 4, and then set more getters 3 according to the vertical state mentioned above. In principle, as long as a part of the getter 3 can be in contact with the air, the air suction effect can be achieved, so no matter which of the above methods is used, the air suction requirements can be met.
[0025] As a variation of the above embodiment, each of the slots is stacked along the height direction of the support seat, and there are multiple getters 3, each of which is stacked in each of the slots. In addition to the above embodiment, multiple slots can be stacked along the height direction of the support seat. This form does not provide a drawing, but it can be imagined that after each getter 3 is set in the slot, it is stacked like a multi-layer sandwich biscuit. At this time, the multi-layer getters 3 are installed in the same direction as the existing one-piece getter 3, but more getters 3 can be set on the same size of the support seat through the slots. It is only necessary to design the spacing of the slots to ensure that the two adjacent getters 3 do not contact each other and can fully contact with the air.
[0026] See also Figures 3 to 6 The support seat includes two bosses 4, the two bosses 4 are arranged at intervals, each boss 4 is provided with the slot, and the two ends of the getter are respectively inserted into the slots of the two bosses 4. In this embodiment, the support seat is refined, which may include two bosses 4, and the two bosses may be designed to place the getter 3 respectively, such as Figure 5The figure shows a better solution for the boss setting. However, in fact, it is also possible to set only one support seat or the support seat only includes one boss, as long as it can ensure that the posture of the getter 3 is stable after being inserted into the slot, and it will not fall or fall from the slot. For example, when the getter 3 is light in weight, the getter 3 can fall stably in the slot without falling out of the slot. Of course, more support seats can be used. For example, when the getter 3 is installed in a vertical state in the above embodiment, more support seats can be set. The support seat is set on one side of the tube shell 5. The other sides of the tube shell 5 can also be provided with support seats to set more getters 3 and improve the air intake efficiency, as long as the middle space is left for the chip 2 to be installed. Moreover, each side is not limited to only one set of support seats, and two sets of support seats can be arranged side by side. Preferably, the getter 3 can be connected to the slot in the form of welding, and the welding form can be used to achieve electrical activation, and the electrical activation of the getter 3 is achieved by energizing the electrode boss.
[0027] See also Figures 3 to 6 The embodiment of the present invention provides a detector, comprising a tube shell 5 with an inner cavity and the above-mentioned getter assembly, wherein the support seat and the getter 3 are both located in the inner cavity of the tube shell 5. In this embodiment, the above-mentioned getter assembly is used in the detector to reduce the volume of the tube shell 5. In the case of a cavity of the same size, the getter 3 has a larger area, can better play the role of getting air, and fully ensure the vacuum degree of the detector package. Preferably, the tube shell 5 is a ceramic tube shell.
[0028] See also Figures 3 to 6, the tube shell 5 is a square structure, then the air intake component can be arranged on the bottom plate inside the tube shell 5 near the edge of the tube shell 5. Air intake components can be designed on all four edges. The middle space can be left for the installation of the chip 2. In another embodiment, a sinking groove can be formed on the bottom plate, and the support seat can also be integrally formed with the bottom plate. The air intake component can be arranged in the sinking groove. After the sinking groove is recessed on the bottom plate, the part of the bottom plate outside the sinking groove naturally forms a platform, and the chip 2 can be set on the platform. Then, by controlling the depth of the sinking groove, the air intake component and the chip 2 can be arranged in layers, that is, the chip 2 is located at the upper layer, and the air intake component is located at the lower layer. In this way, the limitations of the above-mentioned embodiment can be avoided. In the above-mentioned embodiment, it is necessary to leave a space for the installation of the chip 2 to avoid interference between the chip 2 and the air intake component. After the structure of the sink is designed, the air suction component can be set at any position of the bottom plate, for example, a sink is set in the center of the sink, and then the air suction component is set in the sink. The chip 2 can cover the sink without interfering with the air suction component (by designing the depth of the sink, there is a certain interval between the getter 3 and the chip 2). It is only necessary to ensure that the sink is not completely covered by the design of the length of the sink when the chip 2 is covered, leaving a through hole connected to the space of the tube shell 5, so that the air suction component in the sink can absorb the air in the space of the tube shell 5 to achieve the air suction effect. According to this structural form, more getters 3 can be designed, the layout will be more flexible, the selectivity can be higher, the degree of exploration of the air suction aspect is also higher, and the size of the detector can be further reduced.
[0029] See also Figures 3 to 6 , the support base is welded to the bottom plate in the tube shell 5. A chip 2 is arranged on the bottom plate in the tube shell 5. The top of the tube shell 5 is open and a window sheet 1 is arranged at the opening. In this embodiment, during packaging, the getter 3 is first welded to the support base, the chip 2 is then welded to the bottom plate of the tube shell 5, and finally the light window sheet 1 is welded to the top opening of the tube shell 5.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A getter assembly, comprising a getter, characterized in that: It also includes a support seat for mounting the getter, the getter is in a long sheet structure, the support seat has a slot with a width matching the thickness of the getter, and the side of the getter is inserted into the slot.
2. The getter assembly according to claim 1, characterized in that: The support base has a plurality of slots, and the getter is inserted into at least one of the slots.
3. The getter assembly according to claim 2, characterized in that: The slots are arranged side by side along the horizontal direction of the support seat. There are a plurality of getters, and each getter is vertically arranged in each slot.
4. The getter assembly according to claim 2, characterized in that: The slots are stacked along the height direction of the support seat. There are a plurality of getters, and each of the getters is stacked in each of the slots.
5. The getter assembly according to claim 1, wherein: The support seat comprises two bosses, the two bosses are arranged at an interval, each boss is provided with the slot, and the two ends of the getter are respectively inserted into the slots of the two bosses.
6. The getter assembly according to claim 1 or 5, characterized in that: There are multiple groups of support seats.
7. The getter assembly according to claim 1, wherein: The getter is welded to the slot.
8. A detector, comprising a detector chip and a tube shell having an inner cavity, characterized in that: It also includes a getter assembly as described in any one of claims 1 to 7, wherein the detector chip, the support seat and the getter are all located in the inner cavity of the tube shell.
9. The detector according to claim 8, characterized in that: A portion of the bottom plate in the tube shell is recessed to form a sink, and the support seat is arranged in the sink.
10. The detector according to claim 8, characterized in that: The top of the tube shell is open and a window is arranged at the opening.