Polarizing plate, display panel and display device

Abstract

The invention discloses a polarized light plate, a display panel and a display device. According to the polarized light sheet, an isolation structure and an opening are arranged on the polarized light sheet, the opening is surrounded by the isolation structure, or the isolation structure is a linear isolation structure arranged on the plane of the polarized light sheet in the first direction; the isolation structure comprises a plurality of through holes penetrating through the polarized light sheet in the second direction and / or a plurality of grooves sunken in the second direction, and the depth of the grooves in the second direction is smaller than the thickness of the polarized light sheet in the second direction; wherein the first direction is the direction from the inside of the opening to the outside of the opening on the plane of the polarized light sheet, and the second direction is the direction perpendicular to the plane of the polarized light sheet. According to the polarized light plate, stress transmission between the hole area of the polarized light plate and other areas except the hole area is blocked by arranging the surrounding hole or the linear isolation structure, and the hole area is prevented from being influenced by stress of other areas of the polarized light plate, so that the stress of the hole area is effectively reduced, and defects such as black spots are avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a polarizing plate, a display panel and a display device. Background Art

[0002] With the development of display technology, users' demand for display devices with high screen-to-body ratio is increasing, and active area hole (AA Hole) products have emerged. That is, a hole is opened in the display area of ​​the display device to place the front camera of the display device.

[0003] AA Hole products require laser drilling of the display screen and polarizer of the display device. However, due to the shrinkage stress of the polarizer, the hole position of the AA Hole product is prone to black spot defects (Growing Dark Spot Hole, GDSH). Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a polarizer, a display panel and a display device, which block the stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area by setting an isolation structure surrounding the opening or a linear isolation structure, thereby avoiding the stress in the opening area from being affected by the stress in other areas of the polarizer, thereby effectively reducing the stress in the opening area and avoiding the generation of defects such as black spots.

[0005] In a first aspect, the present application provides a polarizer. The polarizer is provided with an isolation structure and an opening, the isolation structure surrounds the opening, or the isolation structure is a linear isolation structure arranged along a first direction on the plane of the polarizer; the isolation structure includes a plurality of through holes penetrating the polarizer along a second direction, and / or a plurality of grooves sunken along the second direction, the depth of the grooves along the second direction is less than the thickness of the polarizer along the second direction; wherein the first direction is a direction from the inside of the opening to the outside of the opening on the plane of the polarizer, and the second direction is a direction perpendicular to the plane of the polarizer.

[0006] In combination with the first aspect, in a possible implementation, when the isolation structure surrounds the opening, the isolation structure is a closed structure, or includes a plurality of sub-isolation structures with intervals therebetween.

[0007] In combination with the first aspect, in a possible implementation, when the isolation structure includes two sub-isolation structures, the two sub-isolation structures are symmetrical in a direction perpendicular to the absorption axis of the polarizer, and the two sub-isolation structures are at the same distance from the edge of the opening.

[0008] In combination with the first aspect, in a possible implementation manner, a shape of the isolation structure is the same as an edge shape of the opening.

[0009] In combination with the first aspect, in a possible implementation, when the isolation structure is circular, the length of the interval is less than or equal to the arc length corresponding to π / 6 radians of the isolation structure.

[0010] In combination with the first aspect, in a possible implementation manner, when the isolation structure is a linear isolation structure disposed along a first direction on the plane of the polarizer, the straight line where the linear isolation structure is located passes through the opening.

[0011] In combination with the first aspect, in a possible implementation manner, the straight line where the linear isolation structure is located passes through the center of the opening.

[0012] In combination with the first aspect, in a possible implementation, when the isolation structure includes two linear isolation structures, the straight line where the two linear isolation structures are located passes through the center of the opening and is perpendicular to the absorption axis of the polarizer.

[0013] In combination with the first aspect, in a possible implementation manner, a length of the linear isolation structure along the first direction is less than or equal to 0.5 mm.

[0014] In a second aspect, the present application further provides a display panel, which includes a display screen and the polarizing plate described in the first aspect, wherein the display screen and the polarizing plate are stacked.

[0015] In a third aspect, the present application further provides a display device, which includes the display panel described in the second aspect.

[0016] The embodiments of the present application provide a polarizer, a display panel and a display device, wherein an isolation structure and an opening are provided on the polarizer, wherein the isolation structure surrounds the opening, or the isolation structure is a linear isolation structure provided on the plane of the polarizer along a direction from the inside of the opening to the outside of the opening; the isolation structure includes a plurality of through holes penetrating the polarizer in a direction perpendicular to the plane of the polarizer, and / or a plurality of grooves sunken in a direction perpendicular to the plane of the polarizer. The embodiments of the present application block the stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area by providing an isolation structure surrounding the opening or a linear structure, thereby preventing the stress in the opening area from being affected by the stress in other areas of the polarizer, thereby effectively reducing the stress in the opening area and avoiding the generation of defects such as black spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 Schematic diagram of stress vectors in the opening area of ​​the polarizer; Figure 2 is a schematic structural diagram of a polarizer in one embodiment; Figure 3 is another schematic structural diagram of a polarizer in one embodiment; Figure 4 is another schematic structural diagram of a polarizer in one embodiment; Figure 5 is a schematic diagram of an isolation structure in one embodiment; Figure 6 is another schematic diagram of an isolation structure in one embodiment; Figure 7 is another schematic structural diagram of a polarizer in one embodiment; Figure 8 is another schematic structural diagram of a polarizer in one embodiment; Fig. 9 is a schematic diagram of parameters of a polarizer in one embodiment; Fig.10 is another schematic structural diagram of a polarizer in one embodiment; Fig.11 is another schematic structural diagram of a polarizer in one embodiment; Fig.12 FIG. 4 is another schematic diagram of the structure of a polarizer in an embodiment. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In addition, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone.

[0020] In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] With the development of display technology, users' demand for display devices with high screen-to-body ratio is increasing, and active area hole (AA Hole) products have emerged. That is, a hole is opened in the display area of ​​the display device to place the front camera of the display device.

[0025] AA Hole products require laser drilling of the display screen and polarizer of the display device. However, due to the shrinkage stress of the polarizer, the hole position of the AA Hole product is prone to black spot defects (Growing Dark Spot Hole, GDSH). Figure 1 As shown in the figure, during the laser hole opening process, the polarizer is prone to contraction stress. The contraction stress of the polarizer, the stress vectors (1, 2) in the direction parallel to the absorption axis of the polarizer are away from the center of the hole, and the stress vectors (3, 4) in the direction perpendicular to the absorption axis of the polarizer are toward the center of the hole. The stress vector magnitude relationship of stress vector 1, stress vector 2, stress vector 3, and stress vector 4 is 1>2≫3≈4. Therefore, the stress at the edge of the hole (dot) pointed by stress vector 3 and stress vector 4 is the largest, and GDSH is most likely to occur.

[0026] Based on this, the embodiments of the present application provide a polarizer, a display panel and a display device, in which an isolation structure is set in the opening area of ​​the polarizer to block the stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area, thereby preventing the stress in the opening area from being affected by the stress in other areas of the polarizer, thereby effectively reducing the stress in the opening area and avoiding the generation of defects such as black spots.

[0027] In one embodiment, a polarizer is provided, on which an isolation structure 10 and an opening 20 are provided, wherein the isolation structure 10 surrounds the opening 20, or the isolation structure 10 is a linear isolation structure provided along a first direction on a plane of the polarizer; the isolation structure 10 includes a plurality of through holes 30 penetrating the polarizer along a second direction, and / or a plurality of grooves 40 sunken along the second direction, wherein the depth of the grooves along the second direction is less than the thickness of the polarizer along the second direction.

[0028] The first direction is a direction from the inside of the opening to the outside of the opening on the plane of the polarizer, and the second direction is a direction perpendicular to the plane of the polarizer.

[0029] In the embodiment of the present application, an isolation structure 10 and an opening 20 are provided on the polarizer. The opening 20 is used to expose electronic devices (for example, a camera). The isolation structure 10 is used to block the stress transmission channel between the opening area and other areas of the polarizer to avoid the influence of the contraction stress of other areas of the polarizer on the opening area, thereby effectively reducing the stress in the opening area and avoiding the occurrence of GDSH.

[0030] like Figure 2 As shown, the isolation structure 10 can avoid the stress transmission channel between the opening area and other areas of the polarizer by surrounding the opening 20; Figure 3 As shown, a linear isolation structure may also be provided at the edge of the opening 20 to prevent stress in other areas of the polarizer from affecting stress in the opening area.

[0031] Among them, Figure 3 or Figure 4 As shown, the linear isolation structure starts from the edge of the opening 20 and is arranged along a direction from the inside of the opening to the outside of the opening (ie, a first direction).

[0032] like Figure 5 As shown, the isolation structure 10 may be a through hole 30 that penetrates the polarizer in a direction perpendicular to the plane of the polarizer (ie, the second direction), or may be a through hole 30 that penetrates the polarizer in a direction perpendicular to the plane of the polarizer. Figure 6 As shown, there is a groove 40 that is sunken in a direction perpendicular to the plane of the polarizer, and the depth of the groove 40 in the second direction is less than the thickness of the polarizer in the second direction, that is, the groove 40 does not penetrate the polarizer in the direction perpendicular to the plane of the polarizer. Figure 5 and Figure 6 For along Figure 3 Schematic diagram of the cross section along line AA'.

[0033] Both the through hole 30 and the groove 40 can effectively block the stress transmission between the open area and other areas of the polarizer. Preferably, the isolation structure 10 can be a through hole 30 that penetrates the polarizer along the second direction.

[0034] The polarizer provided in the embodiment of the present application is provided with an isolation structure and an opening, the isolation structure surrounds the opening, or the isolation structure is a linear isolation structure provided in the direction from the inside of the opening to the outside of the opening on the plane of the polarizer; the isolation structure includes a plurality of through holes penetrating the polarizer in a direction perpendicular to the plane of the polarizer, and / or a plurality of grooves sunken in a direction perpendicular to the plane of the polarizer. The embodiment of the present application blocks the stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area by providing an isolation structure surrounding the opening or a linear structure, thereby preventing the stress in the opening area from being affected by the stress in other areas of the polarizer, thereby effectively reducing the stress in the opening area and avoiding the generation of defects such as black spots.

[0035] In one embodiment, when the isolation structure 10 surrounds the opening 20 , the isolation structure 10 is a closed structure 11 , or includes a plurality of sub-isolation structures 12 at intervals.

[0036] In the present application embodiment, Figure 7 As shown, the isolation structure 10 forms a through hole 30 or a groove 40 at every small gap, and finally forms an isolation structure in the form of a dotted line, that is, a closed structure 11, so as to increase the length of the connection between the opening area and other areas of the polarizer except the opening area, and increase the connection stability between the opening area and other areas.

[0037] like Figure 2 As shown, the isolation structure 10 may also include a plurality of spaced-apart sub-isolation structures 12, which may effectively increase the length of the isolation structure 10, thereby effectively blocking stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area.

[0038] It can be understood that the length of the gap of the closed structure 11 is smaller than the length of the interval between the sub-isolation structures 12 .

[0039] In the polarizer provided in the embodiment of the present application, when the isolation structure surrounds the opening, the isolation structure is set as a closed structure to increase the length of the connection between the opening area and other areas of the polarizer except the opening area, thereby increasing the connection stability between the opening area and other areas; or, the isolation structure is set to include a plurality of spaced sub-isolation structures 12 to increase the length of the isolation structure 10, thereby achieving the effect of effectively blocking the stress transmission between the opening area of ​​the polarizer and other areas of the polarizer except the opening area.

[0040] In one embodiment, Figure 8 As shown, when the isolation structure 10 includes two sub-isolation structures 12 , the two sub-isolation structures 12 are symmetrical in a direction perpendicular to the absorption axis of the polarizer, and the distances between the two sub-isolation structures 12 and the edge of the opening 20 are the same.

[0041] The direction of the arrow in the figure is the direction of the absorption axis.

[0042] Depend on Figure 1 It can be seen that at the edge of the opening 20, the stress vector (stress vector 1) parallel to the absorption axis of the polarizer and facing the large area of ​​the polarizer region is larger. Therefore, when the isolation structure 10 includes two sub-isolation structures 12, the sub-isolation structure 12 can be set between the opening region and the large area of ​​the polarizer region, that is, the two sub-isolation structures 12 are set symmetrically in the vertical direction with respect to the absorption axis of the polarizer. Moreover, each sub-isolation structure 12 should be at the same distance from the edge of the opening 20 to ensure the structural stability of the opening region.

[0043] In a possible implementation, the shape of the isolation structure 10 is the same as the edge shape of the opening 20. For example, if the opening 20 is circular, the isolation structure 10 is circular; if the opening is elliptical, the isolation structure 10 is elliptical.

[0044] When the isolation structure 10 and the opening 20 are circular, the difference between the diameter D2 of the isolation structure 10 and the diameter D1 of the opening 20 is less than or equal to 1 mm, that is, the distance between the sub-isolation structure 12 and the edge of the opening 20 is less than or equal to 0.5 mm.

[0045] When the isolation structure provided in the embodiment of the present application includes two sub-isolation structures, the two sub-isolation structures are arranged symmetrically in a direction perpendicular to the absorption axis of the polarizer to avoid the influence of the larger stress vector of the polarizer on the opening area, and the two sub-isolation structures are arranged at the same distance from the edge of the opening to ensure the structural stability of the opening area.

[0046] In one embodiment, when the isolation structure is circular, the length of the interval is less than or equal to the arc length corresponding to π / 6 radians of the isolation structure 12 .

[0047] In the embodiment of the present application, when the isolation structure 10 surrounds the opening 20, the spacing length between adjacent sub-isolation structures 12 should be adaptively adjusted according to the size of the isolation structure to avoid the isolation structure being small and the adjacent sub-isolation structures 12 being far apart, which affects the stress transmission blocking effect of the isolation structure; to avoid the isolation structure 10 being large and the adjacent sub-isolation structures 12 being closely spaced, which results in poor stability of the isolation structure 10.

[0048] Therefore, when the isolation structure 10 is circular, the stability of the isolation structure and the stress transmission blocking effect can be ensured by limiting the arc corresponding to the interval. Preferably, the length of the interval is less than or equal to the arc length corresponding to π / 6 arc of the isolation structure 12.

[0049] In the embodiment of the present application, the length of the interval between adjacent sub-isolation structures is set to be less than or equal to the arc length corresponding to π / 6 radians of the isolation structure, which can not only ensure the connection stability between the opening area and other areas of the polarizer, but also ensure the length of the isolation structure, so as to effectively block the stress transmission between other areas of the polarizer and the opening area, and reduce the occurrence rate of defects such as black spots.

[0050] In one embodiment, the isolation structure 10 is a linear isolation structure arranged along a first direction on the plane of the polarizer. Figure 4 As shown, the straight line where the linear isolation structure is located passes through the opening 20 .

[0051] Preferably, Figure 3 As shown, the straight line where the linear isolation structure is located passes through the center of the opening.

[0052] In one embodiment, when the isolation structure 10 includes two linear isolation structures, the straight line where the two linear isolation structures are located passes through the center of the opening 20 and is perpendicular to the absorption axis of the polarizer.

[0053] In the present application embodiment, Fig.10 As shown, when the isolation structure 10 includes two linear isolation structures, the two linear isolation structures 12 are arranged on a straight line, and the straight line passes through the center of the opening 20 and is perpendicular to the absorption axis of the polarizer, which can effectively reduce the influence of the stress vector parallel to the absorption axis on the opening, thereby effectively reducing the occurrence rate of defects such as black spots.

[0054] In one embodiment, when the isolation structure 10 includes a plurality of linear isolation structures, the angles between the plurality of linear isolation structures are the same.

[0055] In a possible implementation, when the isolation structure 10 includes four linear isolation structures, the angles between the four linear isolation structures are the same, which is 90°. And two opposite linear isolation structures are on a straight line, so that the straight lines where the two groups of opposite linear isolation structures are located are at angles of 0° and 90° with the absorption axis of the polarizer, respectively.

[0056] In a possible implementation, when the isolation structure 10 includes eight linear isolation structures, the angles between the eight linear isolation structures are the same, which is 45°. Two opposing linear isolation structures are on a straight line, so that the straight lines where the four groups of opposing linear isolation structures are located are at angles of 0°, 45°, 90° and 135° with the absorption axis of the polarizer, respectively.

[0057] In a possible implementation, the length of the linear isolation structure along the first direction is less than or equal to 0.5 mm, so as to avoid the influence of the long linear isolation structure on the stability of the polarizer.

[0058] In one possible implementation, Fig.11 As shown, when the isolation structure 10 surrounds the opening 20 , when the isolation structure 10 includes a plurality of sub-isolation structures 12 , each sub-isolation structure 12 may also be composed of isolation segments with a gap smaller than the interval between the sub-isolation structures 12 .

[0059] In one possible implementation, Fig.12 As shown, when the isolation structure 10 is a linear isolation structure arranged along the first direction on the plane of the polarizer, the linear isolation structure can also be composed of isolated segments with smaller gaps.

[0060] In one embodiment, a display panel is provided, which includes a display screen and the polarizing film described in the above embodiment, and the display screen and the polarizing film are stacked. An isolation structure 10 and an opening 20 are provided on the polarizing film, and the isolation structure 10 surrounds the opening 20, or the isolation structure 10 is a linear isolation structure provided along a first direction on the plane of the polarizing film; the isolation structure 10 includes a plurality of through holes 30 penetrating the polarizing film along a second direction, and / or a plurality of grooves 40 sunken along the second direction, and the depth of the grooves along the second direction is less than the thickness of the polarizing film along the second direction. The first direction is a direction from the inside of the opening to the outside of the opening on the plane of the polarizing film, and the second direction is a direction perpendicular to the plane of the polarizing film.

[0061] In the embodiment of the present application, an isolation structure 10 and an opening 20 are provided on the polarizer. The opening 20 is used to expose electronic devices (for example, a camera). The isolation structure 10 is used to block the stress transmission channel between the opening area and other areas of the polarizer to avoid the influence of the contraction stress of other areas of the polarizer on the opening area, thereby effectively reducing the stress in the opening area and avoiding the occurrence of GDSH.

[0062] The isolation structure 10 can avoid the stress transmission channel between the opening area and other areas of the polarizer by surrounding the opening 20; or a linear isolation structure can be arranged at the edge of the opening 20 to avoid the stress of other areas of the polarizer affecting the stress of the opening area. The linear isolation structure starts from the edge of the opening 20 and is arranged along the direction from the inside of the opening to the outside of the opening (i.e., the first direction).

[0063] For example, the isolation structure 10 may specifically be a through hole 30 that penetrates the polarizer along a direction perpendicular to the plane of the polarizer (i.e., the second direction), or may be a groove 40 that is recessed along a direction perpendicular to the plane of the polarizer, wherein the depth of the groove 40 along the second direction is less than the thickness of the polarizer along the second direction, i.e., the groove 40 does not penetrate the polarizer in the direction perpendicular to the plane of the polarizer.

[0064] Both the through hole 30 and the groove 40 can effectively block the stress transmission between the open area and other areas of the polarizer. Preferably, the isolation structure 10 can be a through hole 30 that penetrates the polarizer along the second direction.

[0065] In one embodiment, when the isolation structure 10 surrounds the opening 20 , the isolation structure 10 is a closed structure 11 , or includes a plurality of sub-isolation structures 12 at intervals.

[0066] The isolation structure 10 forms a through hole 30 or a groove 40 at every small gap, and finally forms an isolation structure in the form of a dotted line, that is, a closed structure 11, so as to increase the length of the connection between the opening area and other areas of the polarizer except the opening area, and increase the connection stability between the opening area and other areas.

[0067] The isolation structure 10 may also include a plurality of spaced-apart sub-isolation structures 12, which can effectively increase the length of the isolation structure 10, thereby effectively blocking stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area.

[0068] In one embodiment, when the isolation structure 10 includes two sub-isolation structures 12 , the two sub-isolation structures 12 are symmetrical in a direction perpendicular to the absorption axis of the polarizer, and the two sub-isolation structures 12 are at the same distance from the edge of the opening 20 .

[0069] Since the stress vector (stress vector 1) at the edge of the opening 20 is parallel to the absorption axis of the polarizer and is oriented toward the large-area polarizer region is larger, when the isolation structure 10 includes two sub-isolation structures 12, the sub-isolation structure 12 can be arranged between the opening region and the large-area polarizer region, that is, the two sub-isolation structures 12 are arranged symmetrically in the vertical direction with respect to the absorption axis of the polarizer. Moreover, each sub-isolation structure 12 should be at the same distance from the edge of the opening 20 to ensure the structural stability of the opening region.

[0070] In a possible implementation, the shape of the isolation structure 10 is the same as the edge shape of the opening 20. For example, if the opening 20 is circular, the isolation structure 10 is circular; if the opening is elliptical, the isolation structure 10 is elliptical.

[0071] When the isolation structure 10 and the opening 20 are circular, the difference between the diameter D2 of the isolation structure 10 and the diameter D1 of the opening 20 is less than or equal to 1 mm, that is, the distance between the sub-isolation structure 12 and the edge of the opening 20 is less than or equal to 0.5 mm.

[0072] In one embodiment, when the isolation structure is circular, the length of the interval is the arc length corresponding to π / 6 radians of the isolation structure 12 .

[0073] When the isolation structure 10 surrounds the opening 20, the spacing length between adjacent sub-isolation structures 12 should be adaptively adjusted according to the size of the isolation structure to avoid the isolation structure being small and the adjacent sub-isolation structures 12 being far apart, which affects the stress transmission blocking effect of the isolation structure; and to avoid the isolation structure 10 being large and the adjacent sub-isolation structures 12 being closely spaced, which results in poor stability of the isolation structure 10.

[0074] Therefore, when the isolation structure 10 is circular, the stability of the isolation structure and the stress transmission blocking effect can be ensured by limiting the arc corresponding to the interval. Preferably, the length of the interval is less than or equal to the arc length corresponding to π / 6 arc of the isolation structure 12.

[0075] In one embodiment, when the isolation structure 10 is a linear isolation structure arranged along the first direction on the polarizer plane, the straight line where the linear isolation structure is located passes through the opening 20. Preferably, the straight line where the linear isolation structure is located passes through the center of the opening.

[0076] In one embodiment, when the isolation structure 10 includes two linear isolation structures, the straight line where the two linear isolation structures are located passes through the center of the opening 20 and is perpendicular to the absorption axis of the polarizer, so as to reduce the influence of the stress vector parallel to the absorption axis on the opening, thereby reducing the occurrence rate of defects such as black spots.

[0077] In one embodiment, when the isolation structure 10 includes a plurality of linear isolation structures, the angles between the plurality of linear isolation structures are the same.

[0078] In a possible implementation, the length of the linear isolation structure along the first direction is less than or equal to 0.5 mm, so as to avoid the influence of the long linear isolation structure on the stability of the polarizer.

[0079] In a possible implementation, when the isolation structure 10 surrounds the opening 20 , when the isolation structure 10 includes a plurality of sub-isolation structures 12 , each sub-isolation structure 12 may also be composed of isolation segments with a gap smaller than the interval between the sub-isolation structures 12 .

[0080] In a possible implementation, when the isolation structure 10 is a linear isolation structure disposed along a first direction on a polarizer plane, the linear isolation structure may also be composed of segments with smaller gaps.

[0081] In one embodiment, a display device is provided, which includes the display panel described in the above embodiment. The display panel includes a display screen and a polarizer, and the display screen and the polarizer are stacked. An isolation structure 10 and an opening 20 are provided on the polarizer, and the isolation structure 10 surrounds the opening 20, or the isolation structure 10 is a linear isolation structure arranged along the first direction on the plane of the polarizer; the isolation structure 10 includes a plurality of through holes 30 penetrating the polarizer along the second direction, and / or a plurality of grooves 40 recessed along the second direction, and the depth of the grooves along the second direction is less than the thickness of the polarizer along the second direction. Wherein, the first direction is the direction from the inside of the opening to the outside of the opening on the plane of the polarizer, and the second direction is the direction perpendicular to the plane of the polarizer.

[0082] In the embodiment of the present application, an isolation structure 10 and an opening 20 are provided on the polarizer. The opening 20 is used to expose electronic devices (for example, a camera). The isolation structure 10 is used to block the stress transmission channel between the opening area and other areas of the polarizer to avoid the influence of the contraction stress of other areas of the polarizer on the opening area, thereby effectively reducing the stress in the opening area and avoiding the occurrence of GDSH.

[0083] The isolation structure 10 can avoid the stress transmission channel between the opening area and other areas of the polarizer by surrounding the opening 20; or a linear isolation structure can be set at the edge of the opening 20 to avoid the stress of other areas of the polarizer affecting the stress of the opening area.

[0084] The linear isolation structure starts from the edge of the opening 20 and is arranged along a direction from the inside of the opening to the outside of the opening (ie, a first direction).

[0085] The isolation structure 10 can be a through hole 30 that penetrates the polarizer in a direction perpendicular to the plane of the polarizer (i.e., the second direction), or a groove 40 that is recessed in a direction perpendicular to the plane of the polarizer. The depth of the groove 40 in the second direction is less than the thickness of the polarizer in the second direction, i.e., it does not penetrate the polarizer in the direction perpendicular to the plane of the polarizer. Both the through hole 30 and the groove 40 can effectively block the stress transmission between the open area and other areas of the polarizer. Preferably, the isolation structure 10 can be a through hole 30 that penetrates the polarizer along the second direction.

[0086] In one embodiment, when the isolation structure 10 surrounds the opening 20 , the isolation structure 10 is a closed structure 11 , or includes a plurality of sub-isolation structures 12 at intervals.

[0087] In the embodiment of the present application, the isolation structure 10 forms a through hole 30 or a groove 40 at every small gap, and finally forms an isolation structure in the form of a dotted line, that is, a closed structure 11, thereby increasing the length of the connection between the opening area and other areas of the polarizer except the opening area, and increasing the connection stability between the opening area and other areas.

[0088] The isolation structure 10 may also include a plurality of spaced-apart sub-isolation structures 12, which can effectively increase the length of the isolation structure 10, thereby effectively blocking stress transmission between the opening area of ​​the polarizer and other polarizer areas except the opening area.

[0089] In one embodiment, when the isolation structure 10 includes two sub-isolation structures 12 , the two sub-isolation structures 12 are symmetrical in a direction perpendicular to the absorption axis of the polarizer, and the two sub-isolation structures 12 are at the same distance from the edge of the opening 20 .

[0090] Since the stress vector (stress vector 1) at the edge of the opening 20 is parallel to the absorption axis of the polarizer and is oriented toward the large-area polarizer region is larger, when the isolation structure 10 includes two sub-isolation structures 12, the sub-isolation structure 12 can be arranged between the opening region and the large-area polarizer region, that is, the two sub-isolation structures 12 are arranged symmetrically in the vertical direction with respect to the absorption axis of the polarizer. Moreover, each sub-isolation structure 12 should be at the same distance from the edge of the opening 20 to ensure the structural stability of the opening region.

[0091] In a possible implementation, the shape of the isolation structure 10 is the same as the edge shape of the opening 20. For example, if the opening 20 is circular, the isolation structure 10 is circular; if the opening is elliptical, the isolation structure 10 is elliptical.

[0092] When the isolation structure 10 and the opening 20 are circular, the difference between the diameter D2 of the isolation structure 10 and the diameter D1 of the opening 20 is less than or equal to 1 mm, that is, the distance between the sub-isolation structure 12 and the edge of the opening 20 is less than or equal to 0.5 mm.

[0093] When the isolation structure provided in the embodiment of the present application includes two sub-isolation structures, the two sub-isolation structures are arranged symmetrically in a direction perpendicular to the absorption axis of the polarizer to avoid the influence of the larger stress vector of the polarizer on the opening area, and the two sub-isolation structures are arranged at the same distance from the edge of the opening to ensure the structural stability of the opening area.

[0094] In one embodiment, when the isolation structure is circular, the length of the interval is the arc length corresponding to π / 6 radians of the isolation structure 12 .

[0095] When the isolation structure 10 surrounds the opening 20, the spacing length between adjacent sub-isolation structures 12 should be adaptively adjusted according to the size of the isolation structure to avoid the isolation structure being small and the adjacent sub-isolation structures 12 being far apart, which affects the stress transmission blocking effect of the isolation structure; and to avoid the isolation structure 10 being large and the adjacent sub-isolation structures 12 being closely spaced, which results in poor stability of the isolation structure 10.

[0096] Therefore, when the isolation structure 10 is circular, the stability of the isolation structure and the stress transmission blocking effect can be ensured by limiting the arc corresponding to the interval. Preferably, the length of the interval is less than or equal to the arc length corresponding to π / 6 arc of the isolation structure 12.

[0097] In one embodiment, when the isolation structure 10 is a linear isolation structure arranged along the first direction on the polarizer plane, the straight line where the linear isolation structure is located passes through the opening 20. Preferably, the straight line where the linear isolation structure is located passes through the center of the opening.

[0098] In one embodiment, when the isolation structure 10 includes two linear isolation structures, the straight line where the two linear isolation structures are located passes through the center of the opening 20 and is perpendicular to the absorption axis of the polarizer, so as to reduce the influence of the stress vector parallel to the absorption axis on the opening, thereby reducing the occurrence rate of defects such as black spots.

[0099] In one embodiment, when the isolation structure 10 includes a plurality of linear isolation structures, the angles between the plurality of linear isolation structures are the same.

[0100] In a possible implementation, the length of the linear isolation structure along the first direction is less than or equal to 0.5 mm, so as to avoid the influence of the long linear isolation structure on the stability of the polarizer.

[0101] In a possible implementation, when the isolation structure 10 surrounds the opening 20 , when the isolation structure 10 includes a plurality of sub-isolation structures 12 , each sub-isolation structure 12 may also be composed of isolation segments with a gap smaller than the interval between the sub-isolation structures 12 .

[0102] In a possible implementation, when the isolation structure 10 is a linear isolation structure disposed along a first direction on a polarizer plane, the linear isolation structure may also be composed of segments with smaller gaps.

[0103] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A polarizing plate, characterized in that: The polarizer is provided with an isolation structure and openings. The isolation structure surrounds the opening, or the isolation structure is a linear isolation structure arranged along the first direction on the plane of the polarizer; the isolation structure includes a plurality of through holes penetrating the polarizer along the second direction, and / or a plurality of grooves sunken along the second direction, the depth of the grooves along the second direction is less than the thickness of the polarizer along the second direction; The first direction is a direction from the inside of the opening to the outside of the opening on the plane of the polarizer, and the second direction is a direction perpendicular to the plane of the polarizer.

2. The polarizer according to claim 1, characterized in that: In the case where the isolation structure surrounds the opening, the isolation structure is a closed structure, or includes a plurality of sub-isolation structures at intervals.

3. The polarizer according to claim 2, characterized in that: When the isolation structure includes two sub-isolation structures, the two sub-isolation structures are symmetrical with respect to a direction perpendicular to the absorption axis of the polarizer, and the distances between the two sub-isolation structures and the edge of the opening are the same.

4. The polarizer according to claim 2, characterized in that: The shape of the isolation structure is the same as the edge shape of the opening.

5. The polarizer according to claim 4, characterized in that: When the isolation structure is circular, the length of the interval is less than or equal to the arc length corresponding to π / 6 radians of the isolation structure.

6. The polarizer according to claim 1, characterized in that: When the isolation structure is a linear isolation structure disposed along a first direction on the plane of the polarizer, the straight line where the linear isolation structure is located passes through the opening.

7. The polarizer according to claim 6, characterized in that: The straight line where the linear isolation structure is located passes through the center of the opening.

8. The polarizer according to claim 1, characterized in that: When the isolation structure includes two linear isolation structures, the straight line where the two linear isolation structures are located passes through the center of the opening and is perpendicular to the absorption axis of the polarizer.

9. The polarizer according to claim 1, characterized in that: The length of the linear isolation structure along the first direction is less than or equal to 0.5 mm.

10. A display panel, characterized in that: The display panel comprises a display screen and the polarizing plate as described in any one of claims 1 to 9, wherein the display screen and the polarizing plate are stacked.

11. A display device, characterized in that: The display device comprises the display panel as claimed in claim 10.

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