[0018] The core of the application is to provide a vacuum packaging cover plate that can improve the area utilization of the getter coating.
[0019] In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.
[0020] See below figure 1 , figure 1 This is a schematic structural diagram of a vacuum packaging cover provided by an embodiment of this application.
[0021] The vacuum packaging cover plate may include:
[0022] The main cover plate 100 of a closed structure is formed by welding with the cavity, and the main cover plate 100 is provided with a coating plate 110 coated with a getter; wherein, the surface of the coating plate 110 is provided with a plurality of pits And/or protrusions.
[0023] Among them, the vacuum packaging cover plate is the cover plate of the vacuum packaging device, and the vacuum packaging cover plate is usually connected to the cavity by welding, and forms a vacuum packaging device with the cavity. Generally speaking, the vacuum packaging cover plate consists of three areas: welding area, functional area and getter coating area. The welding area is an area used to tightly connect the vacuum packaging cover plate and the cavity, so the welding area is usually at the periphery of the vacuum packaging cover plate. It is understandable that the main cover plate 100 in this solution refers to all cover plates except for the welding area of the vacuum welding cover plate.
[0024] According to functions, the main cover 100 can be divided into the following two areas: (1) functional area, (2) coating area. The functional area is the area corresponding to the device applied to the vacuum packaging cover plate, and the coating area is the area used to coat the getter. Furthermore, the main cover plate 100 can be divided into a functional plate 120 and a coating plate 110 according to the functional area and the coating area. It is understandable that the coating plate 110 corresponding to the coating area may be a plate integrated with the main cover plate 100, or an additional plate added to the main cover plate 100. Here, the coating plate 110 and the main The structural relationship of the cover plate 100 is specifically defined. The functional board 120 is set according to the specific function of the vacuum packaged device corresponding to the vacuum packaged cover plate. For example, the vacuum packaged device is an infrared emitter. The functional board should be a functional board with light-transmitting properties. The coating plate 110 and the functional plate 120 together constitute the main cover plate. Since the function of the coating plate is to absorb the escape gas, the specific shape of the coating plate can be determined according to the geometric shape of the functional plate.
[0025] The key to this solution is that the surface of the coated plate 110 is provided with multiple pits and/or protrusions. The arrangement of the pits and/or protrusions can increase the surface area of the coated plate 110, because the getter is coated on the coated plate. A coating layer is formed on the surface. As the surface area of the coating plate 110 increases, the amount of getter that can be coated will also increase, thereby improving the absorption performance of the getter coating layer for the escaped gas. It can be understood that the criteria for determining the pits or protrusions are: a surface without pits and/or protrusions is used as a reference surface, a pit is lower than the reference surface, and a protrusion is higher than the reference surface. In this embodiment, there can be three methods for increasing the area utilization of the aerosol coating. The first is that the coated plate 110 is only provided with multiple pits, and the second is that the coated plate 110 is only provided with multiple protrusions. The third type is that the coated plate 110 is provided with multiple pits and multiple protrusions at the same time. Generally speaking, when the surface area of the pits and the protrusions are the same, the third method has the best effect to increase the area utilization of the aerosol coating. Of course, the specific choice of the coated plate 110 can be selected by those skilled in the art according to the actual application, and no specific limitation is made here.
[0026] It is understandable that the specific arrangement of the pits and/or protrusions on the coated plate 110 is not limited here, and the specific geometric shapes of the pits and/or protrusions are not limited at the same time. The longitudinal section of may be triangular, trapezoidal or rectangular, and the above-mentioned features of pits and protrusions may be set by those skilled in the art according to the shape parameters of the vacuum packaging cover. The following two examples are used to illustrate the slope pits/protrusions and the curved pits/protrusions to illustrate the effect of increasing the surface utilization of the getter coating. Since the surface utilization of the pits and protrusions are calculated the same, only the pits are used for the description below. It is consistent with the calculation method of pits. See figure 2 , image 3 , figure 2 The structure diagram of the surface processing bevel pit, image 3 It is the surface processing arc pit structure diagram; taking the unit size 0.1*0.1 as an example, the original unit area is 0.01; the surface is processed into a slope of 0.05 depth (or height), the surface area is 0.01414, and the surface area increase percentage is (0.0141- 0.01)/0.01=41%; the surface area of the curved surface scheme is 0.0194; the surface area increase percentage (0.0194-0.01)/0.01=94%. As a preferred embodiment, a plurality of arcuate pits and or protrusions can be provided on the coating layer 110 to achieve a higher surface utilization rate of the getter coating.
[0027] The getter coating plate of the vacuum package cover provided by this embodiment increases the contact area between the getter on the coating plate and the escaped gas by providing multiple pits and/or protrusions. In the case of the same coating area requirement, the size of the vacuum package cover can be reduced, and the coating area can also be increased under the same size vacuum package cover, which improves the vacuum and service life of the device, and can improve the getter coating The area utilization rate.
[0028] In a preferred embodiment, the specific structure of the vacuum packaging cover in the previous embodiment is further limited, and the other content is roughly the same as the previous embodiment. For the same parts, please refer to the relevant parts of the previous embodiment. No longer.
[0029] Further, the pits and/or protrusions are evenly distributed on the coated plate.
[0030] Further, the longitudinal section of the concave and/or convex is triangular or trapezoidal.
[0031] Further, the longitudinal section of the pit and/or protrusion is arcuate.
[0032] Further, the main cover plate is specifically a cover plate with a predetermined area having light permeability.
[0033] The application also provides a vacuum packaging device, which may include any of the above-mentioned vacuum packaging cover plates.
[0034] Because the situation is complicated, it is impossible to enumerate one by one. Those skilled in the art should be able to realize that there can be many examples based on the basic method and principle provided in this application in combination with the actual situation. Without sufficient creative work, they should be Within the scope of protection applied for.
[0035] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.
[0036] Specific examples are used in this article to illustrate the principles and implementation of the application. The description of the above examples is only used to help understand the method and core ideas of the application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
