Patent Grant
11352193
This application is the U.S. national phase entry of PCT/CN2017/104279, with an international filing date of Sep. 29, 2017, which claims the benefit of Chinese Patent Application No. 201710089597.5, filed on Feb. 20, 2017, the entire content of which application is incorporated herein by reference.
The present disclosure relates to the technical field of a transportation equipment for a display panel, and in particular to a moisture resistant pad for a liquid crystal panel.
In an existing liquid crystal panel, polarizers (POL) are attached on an array substrate and a color filter substrate. Polarizers are very sensitive to the humidity in the environment. Defects such as polarizer shrinkage may easily occur due to excessive humidity, which may cause the polarizer to lose its original function so that the entire liquid crystal panel cannot meet the customer's requirements. In addition, if the liquid crystal panel is transported to a region with a relatively high humidity or a region requiring sea transportation, defects such as polarizer shrinkage may easily occur due to excessive humidity in the packaging container.
In view of this, embodiments of the present disclosure include moisture resistant pads for a liquid crystal panel that has good moisture resistant properties so that the product can be protected from moisture in transportation environments or packaging container environments.
The present disclosure provides a moisture resistant pad for a liquid crystal panel including at least one moisture resistant construction including a central region and an edge region disposed around the central region, wherein the edge region includes a first undulation structure disposed around the central region, the first undulation structure being a closed structure for blocking water vapor out of the central region. According to an aspect of the present disclosure, the first undulation structure includes an annular projection which is disposed along a circumference of the moisture resistant construction and close to an edge of the moisture resistant construction; or the first undulation structure comprises a plurality of annular projections nested in each other and spaced from each other; and each of the annular projections is disposed along the circumference of the moisture resistant construction, and an outermost annular projection is close to the edge of the moisture-resistant construction.
According to certain embodiments of the present disclosure, the first undulation structure includes at least two annular groups, and the at least two annular groups are continuously arranged in a closed loop along a circumference of the moisture resistant construction, and the edge shape of the closed loop is consistent with the edge shape of the moisture resistant construction. Each annular group includes one annular projection, or a plurality of annular projections that are nested and spaced from each other.
According to certain embodiments of the present disclosure, the at least one moisture resistant construction comprises two moisture resistant constructions facing away from each other; and the two first undulation structures on two moisture resistant constructions are symmetrically disposed. For each of the moisture resistant constructions, the first undulation structure includes a first annular projection and a second annular projection, each of which is in the shape of a closed loop and is disposed at an edge of the moisture resistant construction along the circumference in the moisture resistant construction; the second annular projection is nested inside the first annular projection and forms an edge depressed region therebetween and a central depressed region is formed inside the second annular projection; the central depressed region is for housing the liquid crystal panel.
According to certain embodiments of this disclosure, at least one moisture resistant construction comprises a moisture resistant construction and the first undulation structure comprises a closed first annular boss disposed at the edge of the moisture resistant construction along the circumference of the moisture resistant construction and a central depressed region is formed inside the first annular boss for housing the liquid crystal panel; and a closed annular projection protrudes from the first annular boss, disposed along the circumference of the moisture resist construction. A second annular boss is provided on a back surface of the moisture resistant pad facing away from the moisture resistant construction, disposed at an edge of the back surface along a circumference of the back surface, wherein a central depressed region is formed inside the second annular boss, the central depressed region in the first annular boss and the central depressed region in the second annular boss are symmetrically arranged for housing a liquid crystal panel; and a closed annular recess is formed at a position corresponding to the annular projection, and when two moisture resistant pads are stacked on each other, the annular recess is engaged with the annular projection.
According to certain embodiments of the present disclosure, a second undulation structure is further formed in the central depressed region, the second undulation structure has a closed loop shape and is used to block any water vapor in the first undulation structure from entering the second undulation structure.
According to certain embodiments of the present disclosure, the second undulation structure comprises an annular projection which is disposed along the circumference of the central depressed region and adjacent to the edge of the central depressed region; or the second undulation structure comprises a plurality of annular projections nested with each other and spaced from each other. Each of the annular projections is disposed along the circumference of the central depressed region, and the outermost annular projection is near the edge of the central depressed region.
According to certain embodiments of the present disclosure, the second undulation structure comprises at least two annular groups, and the at least two annular groups are continuously arranged in a closed loop along a circumference of the central depressed region, and an edge shape of the closed loop is consistent with an edge shape of the central depressed region. Each annular group comprises an annular projection, or a plurality of annular projections that are nested and spaced from each other.
According to certain embodiments of this disclosure, the top of the second undulation structure is lower than the top of the first undulation structure.
According to certain embodiments of the present disclosure, for each surface of the liquid crystal panel that needs moisture protection, there can be more than one moisture resistant pads, and the first undulation structures of two adjacent moisture resistant pads are stacked facing each other, and the first undulation structures of two adjacent moisture resistant pads are symmetrical to each other.
The present disclosure has the following beneficial effects: in the moisture resistant pad provided by the present disclosure, by a first undulation structure shaped in a closed loop in a moisture resistant construction, water vapor can be kept out of a periphery of the moisture resistant construction. That is, the channels formed by the first undulation structure and the product surface are isolated from the outside environment so that water vapor in the external environment cannot reach the surface of the product. Therefore, the pad has good moisture resistance so that the product can be protected from moisture in transportation environments or packaging container environments.
The present disclosure also relates to a packaging container including the above moisture resistant pad, in particular a liquid crystal panel packaging container.
To enable those skilled in the art to better understand the technical solutions of the present disclosure, the moisture resistant pad provided in the present disclosure will be described in detail below with reference to the accompanying drawings.
It should be noted that the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the disclosure described herein are capable of operation in other sequences than described or illustrated herein.
Although the moisture resistant pad according to
e are structural views of the improved moisture resistant pad(s). Compared with
The improved moisture resistant pad(s) each includes: a main body; and a first surface and a second surface opposite with each other. The first surface and the second surface of the pad are respectively positioned at both sides of the main body. At least one of the first surface and the second surface of the pad has at least one moisture resistant construction that is adjacent to a surface of a product (e.g., a liquid crystal panel) needing moisture protection. The moisture resistant construction is formed with a first undulation structure which is in a closed loop shape, to block the water vapor out of a periphery of the first undulation structure. Since the first undulation structure is in a closed loop shape, channels formed by the first undulation structure and the liquid crystal panel are isolated from the outside environment so that water vapor of the external environment cannot reach the surface of the product not only in a direction perpendicular to a main surface of the liquid crystal panel, but also sideways from a side wall of the liquid crystal panel. Therefore, the pad has a good moisture resistance effect so that the liquid crystal panel can be protected from moisture in transportation environments or packaging container environments.
Each specific example of the present disclosure will be described in more detail below with reference to the accompanying
In this embodiment, the moisture resistant construction 203 is formed with a first undulation structure including a plurality of annular recesses 202, the plurality of annular recesses 202 being nested and spaced apart from each other. In other words, the plurality of annular recesses 202 are arranged concentrically around the center of the moisture resistant construction 203 at different center distances. And each of the annular recesses 202 is disposed along the circumference (periphery) of the moisture resistant construction 203. The annular shape of each annular recess 202 is similar to the edge shape of the moisture resistant construction, and the outermost annular recess 202 is close to the edge of the moisture resistant construction in order to ensure that water vapor can be obstructed from the periphery of the first undulation structure.
Because each annular recess 202 is a closed annular structure, the channel formed with the product surface is isolated from the external environment such that water vapor in the external environment cannot come into contact with the product surface through the channel, and therefore the pad has moisture resistance so that the product can be protected from moisture in the transportation environment and the packaging container environment.
In practical applications, the annular recess 202 may also be one, which is disposed along the circumference of the moisture resistant construction and close to the edge of the moisture resistant construction.
It should be noted that, in the present embodiment, the first undulation structure may also use an annular projection instead of the annular recess 202, or the first undulation structure may also be a combination of an annular projection and an annular recess. The other details are the same as the example described with reference to
For each annular group 302, it includes a plurality of annular recesses 303 nested into each other and spaced apart from each other. Of course, in practical applications, there may be one annular recess 303 for each annular group 302.
It should be noted that, in the present embodiment, instead of the annular recess 303, an annular projection may also be used as the first undulation structure, or the combination of an annular projection and an annular recess may also be used as the first undulation structure.
For the above first and second embodiments, in practical applications, there may be one or more moisture resistant pads for each surface of the product. For the case of a plurality of moisture resistant pads, the first undulation structures of adjacent pair of the moisture resistant pads are stacked relative to one another (that is, the two moisture resistant constructions having the first undulation structures are arranged face to face), and the first undulation structures of two adjacent moisture resistant pads are symmetrical to each other to form closed channels between adjacent two first undulation structures so as to block water vapor in the external environment from entering between the two moisture resistant pads.
In the above first and second embodiments, in practical applications, as shown in
Specifically, as shown in
In
It should be noted that, in practical applications, the depth of the above central depressed region should be large enough to house the product.
Specifically, there is one moisture resistant construction, and the first undulation structure of the moisture resistant construction includes a closed first annular boss 502 disposed at the edge of the moisture resistant construction along the circumference of the moisture resistant construction, and a first center depressed region 504 is formed inside the first annular boss 502, and the first center depressed region 504 is used for housing a product. In addition, a closed annular projection 503 is protruded from the first annular boss 502, and the annular projection 503 is disposed along the circumference of the moisture resistant construction.
As shown in
Referring to
The present disclosure also relates to a packaging container, in particular a liquid crystal panel packaging container, containing any of the above moisture resistant pads.
It should be noted that, in practical applications, the depths of the first central depressed region and the second central depressed region should be sufficiently large to ensure that the product can be accommodated. For the above third and fourth embodiments, according to an aspect of the present disclosure, for each moisture resistant pad, a second undulation structure may be further formed in the above-mentioned central depressed region, and the second undulation structure is in shape of a closed loop. Water vapor, if any, that enters the inside of the first undulation structure is obstructed from entering the inside of the second undulation structure. In other words, the second undulation structure forms a second barrier against water vapor in the central depressed region, further enhancing the moisture barrier effect of the pad.
The specific structure of the second undulation structure may be any one of the first undulation structures of the first and second embodiments described above. That is, the first undulation structure of the first or second embodiment is disposed in the central depressed region. Since the specific structure of the first undulation structure has been described in detail in the above first and second embodiments, it will not be repeated here.
According to an aspect of the present disclosure, the top of the second undulation structure is lower than the top of the first undulation structure to ensure that the depth of the central depressed region can accommodate the product.
To sum up, in the moisture resistant pad provided by the above embodiments of the present disclosure, channels formed by the first undulation structure and the product surface are isolated from the outside environment so that water vapor in the external environment cannot reach the surface of the product through the channels. Therefore, the pad has good moisture resistance so that the product can be protected from moisture in transportation environments or packaging container environments.
It can be understood that the above embodiments are merely exemplary embodiments used for illustrating the principle of the present disclosure, but the disclosure is not limited thereto. For example, the present disclosure has been described based only on moisture protection conditions of liquid crystal panels, which of course also apply to other generally flat products requiring moisture resistance. For those skilled in the art, various modifications and improvements may be made without departing from the spirit and essence of the present disclosure, and these variations and improvements are also considered as the protection scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201710089597.5 | Feb 2017 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2017/104279 | 9/29/2017 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2018/149146 | 8/23/2018 | WO | A |
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| Number | Date | Country | |
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