Display panel and display device

Abstract

The present invention discloses a display panel and a display device, which relate to the field of display technology. The display panel includes a first polarizer, an array substrate, a color filter substrate, and a second polarizer arranged along the thickness direction. The array substrate is located on the side of the first polarizer facing the light-emitting surface of the display panel, the color filter substrate is located on the side of the array substrate away from the first polarizer, and the second polarizer is located on the side of the color filter substrate away from the first polarizer; it also includes a water-absorbing material layer, the water-absorbing material layer is located on the surface of the second polarizer away from the first polarizer, and / or, is located on the surface of the second polarizer facing the first polarizer; by adding at least one layer of water-absorbing material layer to absorb water vapor around the second polarizer, the problem of acidic substances formed by the reaction of water vapor with TAC in the second polarizer causing the polarizer to turn red is avoided, and the problem of acidic components generated by OCA and water vapor contacting the polarizer causing the polarizer to turn red is avoided, thereby improving the reliability of the display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more particularly, to a display panel and a display device. Background Art

[0002] In the prior art, a display module includes a backlight unit, a lower polarizer, a liquid crystal box, an upper polarizer, an adhesive layer, and a glass cover plate, which are arranged in sequence along the thickness direction. The upper polarizer includes two stacked film layers of PVA (Polyvinyl Alcohol) and TAC (Triacetyl Cellulose), wherein TAC is arranged on the side of the PVA facing the glass cover plate. PVA is the main functional layer of the upper polarizer, and TAC is a protective film layer. The adhesive layer densely covers the upper polarizer, resulting in a polyene reaction in the upper polarizer due to the high temperature during high-temperature experiments such as reliability testing. During the high-temperature process, PVA undergoes a dehydration reaction, and water vapor cannot be discharged in time, reacting with the TAC in the upper polarizer to form acetic acid. The material used to make the adhesive layer also contains acidic components. The presence of acidity will cause the upper polarizer to turn red, thereby reducing the reliability of the display module. Summary of the Invention

[0003] In view of this, the present invention provides a display panel and a display device to improve the problem of polarizer reddening during reliability testing.

[0004] In a first aspect, the present application provides a display panel, comprising a first polarizer, an array substrate, a color filter substrate, and a second polarizer arranged along the thickness direction of the display panel, wherein the array substrate is located on a side of the first polarizer facing a light-emitting surface of the display panel, the color filter substrate is located on a side of the array substrate away from the first polarizer, and the second polarizer is located on a side of the color filter substrate away from the first polarizer;

[0005] It also includes a water-absorbing material layer, which is located on a surface of the second polarizer that is away from the first polarizer, and / or

[0006] The water absorbing material layer is located on a surface of the second polarizer facing the first polarizer.

[0007] In a second aspect, the present application provides a display device, which includes a display panel.

[0008] Compared with the prior art, the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0009] The present application provides a display panel and a display device. The display panel is provided with a first polarizer, an array substrate, a color filter substrate, and a second polarizer in the thickness direction. The present application provides a water-absorbing material layer on the surface of the second polarizer away from the first polarizer, and / or provides a water-absorbing material layer on the surface of the second polarizer facing the first polarizer. The water-absorbing material layer provided on the side of the second polarizer facing the first polarizer can be used to absorb water vapor generated by PVA in the second polarizer at high temperature, and the water-absorbing material layer provided on the side of the second polarizer away from the first polarizer can be used to absorb water vapor generated by OCA (Optically Colored Photodiode) provided on the side of the second polarizer away from the first polarizer in the display panel. The water vapor around the second polarizer is absorbed by the OCA and the optical adhesive, and the transmission of water vapor to the TAC is reduced or even avoided. At the same time, the water-absorbing material layer can also absorb the water vapor around the second polarizer as much as possible. This arrangement is conducive to avoiding the problem of the polarizer turning red due to the acidic substance formed by the reaction of water vapor with the TAC in the second polarizer, and can also avoid the dissolution of the acidic components in the OCA due to the contact of water vapor with the OCA, thereby avoiding the problem of the polarizer turning red due to the contact of the acidic components in the OCA with the polarizer, thereby improving the reliability of the display panel.

[0010] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0011] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0013] Figure 1 Shown is a schematic diagram of a display panel provided by this application;

[0014] Figure 2 Shown is the application provided Figure 1 A cross-sectional view of AA';

[0015] Figure 3 Shown is the application provided Figure 1 Another cross-sectional view of AA';

[0016] Figure 4 Shown is the application provided Figure 1 Another cross-sectional view of AA';

[0017] Figure 5 Shown is the application provided Figure 1Another cross-sectional view of AA';

[0018] Figure 6 Shown is the application provided Figure 1 Another cross-sectional view of AA';

[0019] Figure 7 Shown is the application provided Figure 1 Another cross-sectional view of AA';

[0020] Figure 8 Shown is a cross-sectional view of the adhesive layer provided by the present application;

[0021] Figure 9 Shown is the application provided Figure 1 AA' includes a cross-sectional view of the adhesive layer;

[0022] Figure 10 Shown is a cross-sectional view of the first electrode layer provided by the present application;

[0023] Figure 11 Shown is the application provided Figure 1 AA' includes a cross-sectional view of the first electrode layer;

[0024] Figure 12 Shown is a schematic diagram of the water-absorbing material layer provided by the present application;

[0025] Figure 13 Shown is the application provided Figure 1 An AA' cross-sectional view of the second polarizer;

[0026] Figure 14 Shown is the application provided Figure 1 Another cross-sectional view of AA';

[0027] Figure 15 Shown is a schematic diagram of a display device provided in this application. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] Figure 1 FIG. 1 is a schematic diagram of a display panel provided by the present application. Figure 2 Shown is the application provided Figure 1 A cross-sectional view of AA', Figure 3 Shown is the application provided Figure 1 Another cross-sectional view of AA', Figure 4 Shown is the application provided Figure 1 For another cross-sectional view of AA', please refer to Figure 1 and Figure 2 The present application provides a display panel 100, comprising a first polarizer 11, an array substrate 13, a color filter substrate 14, and a second polarizer 12, which are arranged along the thickness direction of the display panel 100. The array substrate 13 is located on the side of the first polarizer 11 facing the light-emitting surface of the display panel 100, the color filter substrate 14 is located on the side of the array substrate 13 away from the first polarizer 11, and the second polarizer 12 is located on the side of the color filter substrate 14 away from the first polarizer 11.

[0034] It also includes a water-absorbing material layer 15, which is located on a side of the second polarizer 12 away from the first polarizer 11, and / or

[0035] The water-absorbing material layer 15 is located on a surface of the second polarizer 12 facing the first polarizer 11 .

[0036] Specifically, the present application provides a display panel 100, the film structure of which includes at least a first polarizer 11, an array substrate 13, a color film substrate 14 and a second polarizer 12. Specifically, the array substrate 13 can be arranged to be located on the side of the first polarizer 11 facing the light-emitting surface of the display panel 100, and the color film substrate 14 is located on the side of the array substrate 13 away from the first polarizer 11, so as to realize the color display of the display panel 100. The second polarizer 12 is arranged on the side of the color film substrate 14 away from the array substrate 13, and the color display effect of the display panel 100 is ensured by the cooperation of the first polarizer 11 and the second polarizer 12.

[0037] Based on the film layer structure of the display panel 100, the present application provides three optional implementations. The first one is: Figure 2As shown, a water-absorbing material layer 15 is provided on the surface of the second polarizer 12 away from the first polarizer 11. The water-absorbing material layer 15 is provided to absorb the OCA (Optically Clear Adhesive) and the surrounding water vapor provided on the side of the second polarizer 12 away from the first polarizer 11 in the display panel, and reduce or even avoid the transmission of water vapor to TAC. At the same time, the water-absorbing material layer 15 can also absorb the water vapor around the second polarizer 12 as much as possible, thereby reducing or eliminating the problem of acidic substances formed by the reaction of water vapor with TAC in the second polarizer 12 causing the polarizer to turn red, and can also avoid the problem of acidic substances generated by water vapor in the OCA reacting with the second polarizer 12 causing the polarizer to turn red, thereby helping to improve the reliability of the display panel 100. The second type is, Figure 3 As shown, a water-absorbing material layer 15 is provided on the surface of the second polarizer 12 facing the first polarizer 11. The water-absorbing material layer 15 provided on the side of the second polarizer 12 facing the first polarizer 11 can be used to absorb the water vapor generated by the PVA in the second polarizer 12 at high temperature, thereby reducing or eliminating the problem of the polarizer turning red due to the acidic substances formed by the reaction between the water vapor and the TAC in the second polarizer 12, thereby improving the reliability of the display panel 100. The third type is, as shown in FIG. Figure 4 As shown, a water-absorbing material layer 15 is provided on the side surface of the second polarizer 12 away from the first polarizer 11 and the side surface facing the first polarizer 11. The double-layer water-absorbing material layer 15 (151 and 152) is provided to absorb the water vapor in the second polarizer 12 and the water vapor around the second polarizer 12, thereby reducing or eliminating the problem of the polarizer turning red due to the acidic substances formed by the reaction of water vapor with TAC in the second polarizer 12. It can also avoid the problem of the polarizer turning red due to the acidic substances generated by OCA due to contact with water vapor reacting with the second polarizer 12, which is beneficial to further improve the reliability of the display panel 100 and improve the subsequent use effect of the display panel 100.

[0038] Figure 5 Shown is the application provided Figure 1 Another cross-sectional view of AA', Figure 6 Shown is the application provided Figure 1 Another cross-sectional view of AA', Figure 7 Shown is the application provided Figure 1 Another cross-sectional view of AA', Figure 5-Figure 7 The middle vertical dotted line is used to mark the opening area 21 and the non-opening area 22 set at intervals, and only two groups 21 and 22 are used as identification; please refer to Figure 1 and Figure 5-Figure 7 , Optionally, the water-absorbing material layer 15 includes a plurality of water-absorbing material blocks 153;

[0039] The color filter substrate 14 includes multiple opening areas 21 and non-opening areas 22 surrounding the opening areas 21. Along the thickness direction of the display panel 100, the orthographic projection of the water-absorbing material block 153 on the first polarizer 11 overlaps with the orthographic projection of at least one opening area 21 on the first polarizer 11.

[0040] Specifically, the color filter substrate 14 of the display panel 100 includes a plurality of opening areas 21 for color display, and a non-opening area 22 arranged around the opening area 21; the present application also provides an optional implementation method in which the water-absorbing material layer 15 is not provided with a whole layer of water-absorbing material, and the water-absorbing material layer 15 can be provided with a plurality of water-absorbing material blocks 153 arranged at intervals; further, along the thickness direction of the display panel 100, the water-absorbing material block 153 can be optionally provided with an orthographic projection of the first polarizer 11 overlapping with the orthographic projection of at least part of the opening area 21 on the first polarizer 11. For example, each water-absorbing material block 153 can be optionally provided at The orthographic projection of the first polarizer 11 overlaps with the orthographic projection of each opening area 21 on the first polarizer 11, so that the arrangement of the water-absorbing material block 153 can be mainly used to absorb water vapor in the second polarizer 12 in the area corresponding to the opening area 21 in the display panel 100, so as to reduce or eliminate the problem of the polarizer turning red due to the acidic substances formed by the reaction of water vapor with TAC in the second polarizer 12. It can also avoid the problem of the polarizer turning red due to the acidic substances generated by OCA due to contact with water vapor reacting with the second polarizer 12, thereby further improving the reliability of the display panel 100 and improving the subsequent use effect of the display panel 100.

[0041] It should also be added that when a water-absorbing material block 153 is set corresponding to each opening area 21, along the thickness direction of the display panel 100, the water-absorbing material block 153 can be set so that the orthographic projection of the first polarizer 11 and the corresponding opening area 21 on the plane where the first polarizer 11 are located at least partially overlap, or the orthographic projection of the water-absorbing material block 153 on the plane where the first polarizer 11 are located covers the orthographic projection of the corresponding opening area 21 on the plane where the first polarizer 11 are located. This application does not make specific restrictions on this, and the setting relationship between the water-absorbing material block 153 and the opening area 21 can be selected according to needs.

[0042] It is also necessary to add that, as mentioned above, please continue to refer to Figure 1 and Figure 5-Figure 7, it is possible to choose to set a water-absorbing material block 153 on the side of the second polarizer 12 facing the first polarizer 11, and / or to set a water-absorbing material block 153 on the side of the second polarizer 12 away from the first polarizer 11; in addition, it is also possible to choose to set the water-absorbing material block 153 only on the side of the second polarizer 12 corresponding to the partial opening area 21 facing the first polarizer 11, or to choose to set the water-absorbing material block 153 only on the side of the second polarizer 12 corresponding to the partial opening area 21 away from the first polarizer 11. This application does not make specific restrictions on this, and the setting method of the water-absorbing material block 153 can be selected according to needs.

[0043] Figure 8 Shown is a cross-sectional view of the adhesive layer provided by this application. Figure 9 Shown is the application provided Figure 1 AA' includes a cross-sectional view of the adhesive layer, Figure 9 The middle vertical dotted line is used to mark the opening area 21 and the non-opening area 22 set at intervals, and only two groups 21 and 22 are used as identification; please refer to Figure 1 、 Figure 8 、 Figure 9 Optionally, it further includes an adhesive layer 16, and the adhesive layer 16 is located on a side surface of the second polarizer 12 away from the first polarizer 11;

[0044] Along the thickness direction of the display panel 100 , the adhesive layer 16 includes at least one first opening 161 extending through the thickness thereof, wherein the orthographic projection of the first opening 161 on the first polarizer 11 overlaps with the orthographic projection of the at least one opening area 21 on the first polarizer 11 ;

[0045] The water-absorbing material block 153 is embedded in the first opening 161 .

[0046] Specifically, the display panel 100 includes a first polarizer 11, an array substrate 13, a color film substrate 14, a second polarizer 12 and a water-absorbing material layer 15, and further includes an adhesive layer 16. The present application provides an optional embodiment in which the adhesive layer 16 is provided on the side surface of the second polarizer 12 away from the first polarizer 11. In this case, the adhesive layer 16 and the water-absorbing material layer 15 can be provided on the same layer. The specific setting method is to provide the adhesive layer 16 on the side surface of the second polarizer 12 away from the first polarizer 11. The adhesive layer 16 is provided along the display panel 1 00 is provided with a first opening 161 penetrating the thickness of the adhesive layer 16, and the water-absorbing material block 153 can be embedded in the first opening 161, so that the adhesive layer 16 and the water-absorbing material layer 15 are arranged in the same layer. Compared with arranging the water-absorbing material layer 15 and the adhesive layer 16 in layers, the overall thickness of the display panel 100 can be reduced, and at the same time, the water-absorbing material layer 15 can be used to absorb the water vapor existing in the second polarizer 12, and the adhesive layer 16 can also be used to achieve the fixed arrangement of the glass cover plate on the side of the adhesive layer 16 away from the second polarizer 12.

[0047] It should be added that when the adhesive layer 16 is provided with a first opening 161 extending through the thickness of the display panel 100 and the water-absorbing material block 153 is embedded in the first opening 161, it can be selected that along the thickness direction of the display panel 100, the orthographic projection of one first opening 161 on the first polarizer 11 overlaps with the orthographic projection of one opening area 21 on the first polarizer 11, thereby achieving the orthographic projection of one water-absorbing material block 153 on the first polarizer 11 overlapping with the orthographic projection of each opening area 21 on the first polarizer 11, so that The setting of the water-absorbing material block 153 can be mainly used to absorb water vapor in the second polarizer 12 corresponding to the opening area 21 in the display panel 100, so as to reduce or eliminate the problem of the polarizer turning red due to the acidic substances formed by the reaction between water vapor and TAC in the second polarizer 12. It can also avoid the problem of the polarizer turning red due to the acidic substances generated by OCA due to contact with water vapor reacting with the second polarizer 12, which can further improve the reliability of the display panel 100 and improve the subsequent use effect of the display panel 100.

[0048] It should also be added that when the side of the second polarizer 12 away from the first polarizer 11 is provided with an adhesive layer 16 and a water-absorbing material block 153 embedded in the adhesive layer 16, it is further optional to further provide a water-absorbing material layer 15 on the surface of the second polarizer 12 facing the first polarizer 11, or it is also optional not to provide a water-absorbing material layer 15 on the surface of the second polarizer 12 facing the first polarizer 11. This application does not make specific restrictions on this, and whether to provide a water-absorbing material layer 15 on the surface of the second polarizer 12 facing the first polarizer 11 can be selected according to needs.

[0049] Figure 10 Shown is a cross-sectional view of the first electrode layer provided by this application. Figure 11 Shown is the application provided Figure 1 AA' includes a cross-sectional view of the first electrode layer, Figure 11 The middle vertical dotted line is used to mark the opening area 21 and the non-opening area 22 set at intervals, and only two groups 21 and 22 are used as identification; please refer to Figure 1 、 Figure 10 、 Figure 11 Optionally, it further includes a first electrode layer 17, and the first electrode layer 17 is located on a side surface of the second polarizer 12 away from the first polarizer 11;

[0050] Along the thickness direction of the display panel 100, the first electrode layer 17 includes at least one second opening 171 extending through the thickness thereof, and the orthographic projection of the second opening 171 on the first polarizer 11 overlaps with the orthographic projection of the at least one opening area 21 on the first polarizer 11;

[0051] The water-absorbing material block 153 is embedded in the second opening 171 .

[0052] Specifically, the display panel 100 includes a first polarizer 11, an array substrate 13, a color film substrate 14, a second polarizer 12 and a water-absorbing material layer 15, and further includes a first electrode layer 17. The present application also provides an optional implementation method in which the first electrode layer 17 is arranged on the surface of the second polarizer 12 away from the first polarizer 11. In this case, the first electrode layer 17 and the water-absorbing material layer 15 can be arranged in the same layer. The specific setting method is to arrange the first electrode layer 17 on the surface of the second polarizer 12 away from the first polarizer 11. A first electrode layer 17 is provided on the surface, and a second opening 171 is provided in the first electrode layer 17 along the thickness direction of the display panel 100 and penetrates the thickness of the first electrode layer 17. The water-absorbing material block 153 can be embedded in the second opening 171, so that the first electrode layer 17 and the water-absorbing material layer 15 are arranged in the same layer. Compared with arranging the water-absorbing material layer 15 and the first electrode layer 17 in layers, the overall thickness of the display panel 100 can be reduced, and at the same time, the water-absorbing material layer 15 can be used to absorb water vapor in the second polarizer 12.

[0053] It should be added that when the first electrode layer 17 is provided with a second opening 171 extending through the thickness of the display panel 100 and a water-absorbing material block 153 is embedded in the second opening 171, it can be selected to be arranged along the thickness direction of the display panel 100 so that the orthographic projection of a second opening 171 on the first polarizer 11 overlaps with the orthographic projection of an opening area 21 on the first polarizer 11, thereby achieving the overlap of the orthographic projection of a water-absorbing material block 153 on the first polarizer 11 and the orthographic projection of each opening area 21 on the first polarizer 11, so that the arrangement of the water-absorbing material block 153 can be mainly used to absorb water vapor in the second polarizer 12 corresponding to the opening area 21 in the display panel 100, so as to reduce or eliminate the problem of the polarizer turning red due to the acidic substance formed by the reaction of water vapor with TAC in the second polarizer 12, and can also further enhance the reliability of the display panel 100 and enhance the subsequent use effect of the display panel 100.

[0054] It should also be added that when the first electrode layer 17 and the water-absorbing material block 153 embedded in the first electrode layer 17 are provided on the side of the second polarizer 12 away from the first polarizer 11, it is further optional to further provide a water-absorbing material layer 15 on the surface of the second polarizer 12 facing the first polarizer 11, or it is also optional not to provide a water-absorbing material layer 15 on the surface of the second polarizer 12 facing the first polarizer 11. This application does not make specific restrictions on this, and whether to provide a water-absorbing material layer 15 on the surface of the second polarizer 12 facing the first polarizer 11 can be selected according to needs.

[0055] Figure 12 The diagram shows a schematic diagram of the water-absorbing material layer provided in this application. Figure 5-Figure 7 Reference Figure 1 and Figure 12 Optionally, the display panel 100 includes a first display area 31 and a second display area 32 surrounding the first display area 31;

[0056] The arrangement density of the water absorbent material blocks 153 in the first display area 31 is greater than the arrangement density of the water absorbent material blocks 153 in the second display area 32 .

[0057] Specifically, when the water-absorbing material layer 15 in the display panel 100 includes a plurality of water-absorbing material blocks 153, the present application also provides an optional embodiment in which the display panel 100 includes a first display area 31 and a second display area 32 surrounding the first display area 31. The density of the water-absorbing material blocks 153 in the first display area 31 can be set to be greater than the density of the water-absorbing material blocks 153 in the second display area 32, so that the water-absorbing material layer 15 has a better water-absorbing effect on the central area (first display area 31) of the display panel 100 than on the edge area (second display area 32); because in the display panel 100, the closer to the central area, the more water vapor can pass through. The farther the water vapor escapes from the side edge of the display panel 100, the less likely it is to be discharged. Therefore, by setting the density of the water-absorbing material block 153 in the central area of ​​the display panel 100 to be higher, it is more conducive to improving the absorption of water vapor in the second polarizer 12 by the water-absorbing material layer 15, thereby reducing or eliminating the problem of acidic substances formed by the reaction between water vapor and TAC in the second polarizer 12 causing the polarizer to turn red. It can also avoid the problem of acidic substances generated by the OCA further arranged on the side of the second polarizer away from the first polarizer due to contact with water vapor and reacting with the second polarizer 12, causing the polarizer to turn red, thereby improving the reliability of the display panel 100.

[0058] Please continue to combine Figure 5-Figure 7 Reference Figure 1 and Figure 12 Optionally, the display panel 100 includes a first display area 31 and a second display area 32 surrounding the first display area 31;

[0059] The area proportion of the water-absorbing material block 153 in the first display area 31 is greater than the area proportion of the water-absorbing material block 153 in the second display area 32 .

[0060] Specifically, when the water-absorbing material layer 15 in the display panel 100 includes a plurality of water-absorbing material blocks 153, the present application also provides an optional embodiment in which the display panel 100 includes a first display area 31 and a second display area 32 surrounding the first display area 31. The total area of ​​the water-absorbing material blocks 153 in the first display area 31 can be set to be larger than the total area of ​​the water-absorbing material blocks 153 in the second display area 32, so that the water-absorbing material layer 15 has a better water-absorbing effect on the central area (first display area 31) of the display panel 100 than on the edge area (second display area 32); because in the display panel 100, the closer to the central area, the less water vapor can absorb. The farther the water escapes from the side edge of the display panel 100, the less likely it is to be discharged. Therefore, by setting the area of ​​the water-absorbing material block 153 in the central area of ​​the display panel 100 to be larger, it is more conducive to improving the absorption of water vapor in the second polarizer 12 by the water-absorbing material layer 15, thereby reducing or eliminating the problem of acidic substances formed by the reaction of water vapor with TAC in the second polarizer 12 causing the polarizer to turn red. It can also avoid the problem of acidic substances generated by the OCA further arranged on the side of the second polarizer away from the first polarizer due to contact with water vapor and reacting with the second polarizer 12, causing the polarizer to turn red, thereby improving the reliability of the display panel 100.

[0061] Figure 13 Shown is the application provided Figure 1 Please refer to the AA' cross-section of the second polarizer. Figure 1-Figure 4 and Figure 13 Optionally, along the thickness direction of the display panel 100 , the second polarizer 12 includes a polarizing layer 121 and a protective layer 122 that are stacked, and the protective layer 122 is located on a side of the polarizing layer 121 away from the first polarizer 11 ;

[0062] The water absorbing material layer 15 is located on a surface of the second polarizer 12 away from the first polarizer 11 , and is also located on a surface of the second polarizer 12 facing the first polarizer 11 .

[0063] Specifically, the present application also provides an optional embodiment in which the second polarizer 12 includes a polarizing layer 121 and a protective layer 122, and the polarizing layer 121 and the protective layer 122 are stacked along the thickness direction of the display panel 100, wherein the protective layer 122 can be arranged on the side surface of the polarizing layer 121 away from the first polarizer 11. At this time, a water-absorbing material layer 15 can be further arranged on the side surface of the second polarizer 12 away from the first polarizer 11, and on the side surface of the second polarizer 12 facing the first polarizer 11, that is, on the side surface of the second polarizer 12 facing the first polarizer 11. A water-absorbing material layer 15 is provided on the surface of the side away from the first polarizer 11. The double-layer water-absorbing material layer 15 (151 and 152) can absorb the water vapor in the second polarizer 12, thereby reducing or eliminating the problem of the polarizer turning red due to the acidic substances formed by the reaction between the water vapor in the polarizing layer 121 and the protective layer 122. It can also avoid the problem of the polarizer turning red due to the acidic substances generated by the OCA due to contact with water vapor reacting with the second polarizer 12, further improving the reliability of the display panel 100 and improving the subsequent use effect of the display panel 100.

[0064] It should also be added that when the water-absorbing material layer 15 is provided on both the side surface of the second polarizer 12 facing the first polarizer 11 and the side surface away from the first polarizer 11, one of the water-absorbing material layers 15 can be selected to be planar and the other water-absorbing material layer 15 can be block-shaped; it is also possible to select both water-absorbing material layers 15 to be planar, and the areas of the two planar shapes can be the same or different; it is also possible to select both water-absorbing material layers 15 to be block-shaped, and the block-shaped water-absorbing material blocks 153 in the two water-absorbing material layers 15 can be arranged one-to-one, or the areas and sizes of the water-absorbing material blocks 153 in different water-absorbing material layers 15 can be different; this application does not make any specific restrictions on this, and the specific setting structure of the water-absorbing material layer 15 can be selected according to needs.

[0065] Figure 14 Shown is the application provided Figure 1 For another cross-sectional view of AA', please refer to Figure 1 and Figure 14 Optionally, an adhesive layer 16 is further included, and the water-absorbing material layer 15 is located between the adhesive layer 16 and the second polarizer 12 .

[0066] Specifically, the present application also provides an optional implementation method, in which, on the basis of the display panel 100 including the first polarizer 11, the array substrate 13, the color film substrate 14 and the second polarizer 12, an adhesive layer 16 is further provided, and the water-absorbing material layer 15 can be optionally provided on the side of the second polarizer 12 away from the first polarizer 11, and then the adhesive layer 16 is provided on the side of the water-absorbing material layer 15 away from the second polarizer 12. By providing the water-absorbing material layer 15 between the adhesive layer 16 and the second polarizer 12, the water-absorbing material layer 15 absorbs the water vapor generated after the polarizer is dehydrated, thereby reducing or eliminating the problem of the polarizer turning red due to the acidic substances formed by the reaction of water vapor with TAC in the second polarizer 12, and also avoiding the problem of the second polarizer 12 turning red due to the reaction of the acidic substances in the adhesive layer 16 with the polarizer, thereby improving the reliability of the display panel 100 and further improving the subsequent use effect of the display panel 100.

[0067] It is also necessary to specifically add that when the second polarizer 12 is provided with a polarizing layer 121 and a protective layer 122, and an adhesive layer 16 is further provided on the side of the second polarizer 12 away from the first polarizer 11, the water vapor generated by the dehydration of the polarizing layer 121 can be absorbed by the water-absorbing material layer 15, which can reduce the continuous reaction between the water vapor and the material of the protective layer 122, and at the same time reduce the acidic components dissolved and precipitated by the water vapor in contact with the adhesive layer 16, thereby reducing the problem of the second polarizer 12 turning red; or the water-absorbing material layer 15 absorbs the water vapor so that the acidic components are not generated at all, so that the polyolefination reaction disappears, thereby avoiding the problem of the second polarizer 12 turning red, and improving the reliability and display effect of the display panel 100.

[0068] Please refer to Figure 1 and Figure 14 Optionally, the water-absorbing material layer 15 is made of at least one of sodium polyacrylate, polyvinyl alcohol, and ethylene oxide.

[0069] Specifically, the present application also provides an optional implementation method, in which the material for making the water-absorbing material layer 15 can be selected from any one or at least one of sodium polyacrylate, polyvinyl alcohol, and ethylene oxide. The present application does not make any specific restrictions on this, and other materials can also be selected as needed to make the water-absorbing material layer 15, as long as it can achieve the effect of absorbing water vapor in the polarizer.

[0070] Figure 15 The figure shows a schematic diagram of the display device provided by this application. Figures 1-14 Reference Figure 15 Based on the same inventive concept, the present application further provides a display device 200, which includes a display panel 100. The display panel is any display panel 100 provided in the present application.

[0071] It should be noted that the embodiments of the display device provided in the embodiments of the present application can refer to the embodiments of the display panel described above, and the repeated parts will not be repeated. The display device provided in the present application can be: a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a car display screen, a navigation system, or any other product or component with a display function.

[0072] It can be seen from the above embodiments that the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0073] The present application provides a display panel and a display device. The display panel is provided with a first polarizer, an array substrate, a color filter substrate, and a second polarizer in the thickness direction. The present application provides a water-absorbing material layer on the surface of the second polarizer away from the first polarizer, and / or provides a water-absorbing material layer on the surface of the second polarizer facing the first polarizer. The water-absorbing material layer provided on the side of the second polarizer facing the first polarizer can be used to absorb water vapor generated by PVA in the second polarizer at high temperature, and the water-absorbing material layer provided on the side of the second polarizer away from the first polarizer can be used to absorb water vapor generated by OCA (Optically Colored Photodiode) provided on the side of the second polarizer away from the first polarizer in the display panel. The water vapor around the second polarizer is absorbed by the OCA and the optical adhesive, and the transmission of water vapor to the TAC is reduced or even avoided. At the same time, the water-absorbing material layer can also absorb the water vapor around the second polarizer as much as possible. This arrangement is conducive to avoiding the problem of the polarizer turning red due to the acidic substance formed by the reaction of water vapor with the TAC in the second polarizer, and can also avoid the dissolution of the acidic components in the OCA due to the contact of water vapor with the OCA, thereby avoiding the problem of the polarizer turning red due to the contact of the acidic components in the OCA with the polarizer, thereby improving the reliability of the display panel.

[0074] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display panel, characterized in that: The display panel comprises a first polarizer, an array substrate, a color filter substrate, and a second polarizer, the array substrate being located on a side of the first polarizer facing a light-emitting surface of the display panel, the color filter substrate being located on a side of the array substrate away from the first polarizer, and the second polarizer being located on a side of the color filter substrate away from the first polarizer. It also includes a water-absorbing material layer, the water-absorbing material layer is located on a side of the second polarizer away from the first polarizer, and / or The water absorbing material layer is located on a surface of the second polarizer facing the first polarizer; The water-absorbing material layer includes a plurality of water-absorbing material blocks; The color film substrate includes multiple opening areas and non-opening areas surrounding the opening areas. Along the thickness direction of the display panel, the orthographic projection of the water-absorbing material block on the first polarizer overlaps with the orthographic projection of at least one of the opening areas on the first polarizer.

2. The display panel according to claim 1, wherein: It also includes an adhesive layer, the adhesive layer is located on a surface of the second polarizer that is away from the first polarizer; The adhesive layer includes at least one first opening extending through the thickness of the display panel, wherein an orthographic projection of the first opening on the first polarizer overlaps with an orthographic projection of at least one opening area on the first polarizer; The water-absorbing material block is embedded in the first opening.

3. The display panel according to claim 1, wherein: It also includes a first electrode layer, wherein the first electrode layer is located on a side of the second polarizer away from the first polarizer; Along the thickness direction of the display panel, the first electrode layer includes at least one second opening extending through the thickness thereof, and an orthographic projection of the second opening on the first polarizer overlaps with an orthographic projection of at least one of the opening areas on the first polarizer; The water-absorbing material block is embedded in the second opening.

4. The display panel according to claim 1, wherein: The display panel includes a first display area and a second display area surrounding the first display area; The arrangement density of the water-absorbing material blocks in the first display area is greater than the arrangement density of the water-absorbing material blocks in the second display area.

5. The display panel according to claim 1, wherein: The display panel includes a first display area and a second display area surrounding the first display area; The area proportion of the water-absorbing material block in the first display area is greater than the area proportion of the water-absorbing material block in the second display area.

6. The display panel according to claim 1, wherein: Along the thickness direction of the display panel, the second polarizer includes a polarizing layer and a protective layer stacked together, and the protective layer is located on a side of the polarizing layer away from the first polarizer; The water absorbing material layer is located on a side surface of the second polarizer away from the first polarizer, and is also located on a side surface of the second polarizer facing the first polarizer.

7. The display panel according to claim 1, wherein: It also includes an adhesive layer, and the water-absorbing material layer is located between the adhesive layer and the second polarizer.

8. The display panel according to claim 1, wherein: The water-absorbing material layer is made of at least one of sodium polyacrylate, polyvinyl alcohol, and ethylene oxide.

9. A display device, characterized in that: The display panel comprises any one of claims 1 to 8.

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