CN114815031B

CN114815031B - Polarizer and display module

Info

Publication number: CN114815031B
Application number: CN202210467582.9A
Authority: CN
Inventors: 武峰; 陈华山; 冯凯
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2024-02-02
Anticipated expiration: 2042-04-29
Also published as: CN114815031A

Abstract

The application provides a polaroid and a display module, wherein the polaroid comprises a polaroid body and a protective layer, the polaroid body comprises a first surface and a second surface which are oppositely arranged along the thickness direction, and side surfaces for connecting the first surface and the second surface, and at least part of the side surfaces deviate from the thickness direction of the polaroid; the protective layer covers at least a portion of the side surface. The protective layer is used for preventing the polaroid from being scalded, thereby avoiding the polaroid from losing efficacy and ensuring the display effect of the display panel. Therefore, the polaroid and the display module provided by the application can avoid the damage of the polaroid in the binding process, thereby ensuring the display effect of the display module.

Description

Polarizer and display module

Technical Field

The application relates to the technical field of display panels, in particular to a polaroid and a display module.

Background

An organic light emitting diode (Organic Light Emitting Diode, abbreviated as OLED) display panel has a wider application range due to the advantages of light weight, self-luminescence, wide viewing angle, low driving signal, high luminous efficiency, low power consumption, high response speed and the like.

In the related art, the display module may include a display panel and a polarizer that are stacked, where a binding area of the display panel is bound and connected with a flexible circuit board, and the flexible circuit board is electrically connected with a driving circuit (Integrated Circuit, abbreviated as IC), so as to realize signal transmission between the IC and the display panel.

However, the polarizer is easily damaged during the binding process, thereby affecting the display effect of the display module.

Disclosure of Invention

In view of at least one technical problem described above, embodiments of the present application provide a polarizer and a display module, which can avoid the polarizer from being damaged in the binding process, thereby ensuring the display effect of the display module.

In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

a first aspect of embodiments of the present application provides a polarizer, where the polarizer includes a polarizer body and a protective layer, the polarizer body includes a first surface and a second surface that are disposed opposite to each other along a thickness direction, and a side surface that connects the first surface and the second surface, and at least a portion of the side surface is disposed offset from the thickness direction of the polarizer; the protective layer covers at least a portion of the side surface.

The polaroid comprises a polaroid body and a protective layer, wherein the polaroid body comprises a first surface and a second surface which are oppositely arranged along the thickness direction, and side surfaces which are connected with the first surface and the second surface, and at least part of the side surfaces deviate from the thickness direction of the polaroid; the protective layer covers at least a portion of the side surface. If the side surface provided with the protective layer faces the binding area of the display panel, the protective layer can be used for preventing the polaroid from being scalded, thereby avoiding the polaroid from losing efficacy and ensuring the display effect of the display panel. The protective layer is covered on the side wall to protect the polaroid body, the distance between the polaroid body and the conductive structure in the binding area is not required to be increased, the screen occupation ratio of the display module is not influenced, and the narrow frame is facilitated. In addition, at least part of the side surface deviates from the thickness direction of the polaroid, namely, the extending direction of the side surface is non-perpendicular to the plane where the polaroid body is located, and the side surface is obliquely arranged, so that the area of the side surface can be increased, more protective layers can be covered on the side surface, and the anti-scalding effect of the protective layers is improved.

In one possible implementation, the side surfaces include a first side surface and a second side surface that meet along a circumferential direction of the polarizer;

the protective layer comprises a first protective layer, and the first protective layer covers the surface of the first side; the first protective layer comprises a heat insulating adhesive layer and/or a heat absorbing adhesive layer.

Like this, first protective layer can prevent that the polaroid body from being scalded, can also prevent the influence of water oxygen to the polaroid.

In one possible implementation, the protective layer includes a second protective layer, and the second protective layer covers the second side surface; the second protective layer includes a hot melt adhesive layer.

Thus, the second protective layer can improve the strength of the display panel and can also prevent the influence of water oxygen on the polarizer.

In one possible implementation, the first side surface includes a first bevel having a first edge proximate the first surface, the first bevel extending obliquely outward from the first edge and toward the second surface, the first bevel forming a first angle with the first surface;

it is possible that the first angle is in the range of 60 ° -75 °;

it is achieved that the second side surface comprises a third bevel having a third edge adjacent to the first surface, the third bevel extending from the third edge outwards and obliquely towards the second surface, the third bevel forming a third angle with the first surface.

In this way, the first slope can increase the area of the first side surface, thereby better protecting the polarizer.

In one possible implementation, the first side surface further includes a second bevel having a second edge proximate the second surface, the second bevel extending outwardly from the second edge and obliquely toward the first surface, the second bevel forming a second included angle with the second surface;

it is possible that the second angle is in the range of 15 ° -30 °;

it is achieved that the second side surface comprises a fourth bevel having a fourth edge adjacent to the second surface, the fourth bevel extending from the fourth edge outwards and obliquely towards the first surface, the fourth bevel forming a fourth angle with the second surface.

In this way, the second inclined surface can increase the area of the first side surface, thereby better protecting the polarizer.

In one possible implementation, the first inclined plane and the second inclined plane are connected in the thickness direction;

it is possible to realize that the sum of the first angle and the second angle is 90 °.

Therefore, the first inclined plane and the second inclined plane enable the area of the surface of the first side to be larger, and the polarizer can be well protected.

In one possible implementation manner, the polarizer body includes a first film layer, a polarizing film layer and a second film layer, which are sequentially stacked, where the first film layer is located on a side of the polarizing film layer, which is close to the first surface, and the second film layer is located on a side of the polarizing film layer, which is close to the second surface;

the connection position of the first inclined plane and the second inclined plane is positioned on the polarizing film layer or the second film layer.

Thus, the protective effect on the polarizing film layer is better.

In one possible implementation, the side surface deviating from the thickness direction of the polarizer includes at least one of a wavy surface and a serrated surface.

In this way, the side surfaces are provided in a plurality of ways, and many scenes can be applied.

A second aspect of embodiments of the present application provides a display module, including the polarizer in the first aspect.

The display module comprises a polaroid, wherein the polaroid comprises a polaroid body and a protective layer, the polaroid body comprises a first surface and a second surface which are oppositely arranged along the thickness direction, and side surfaces connecting the first surface and the second surface, and at least part of the side surfaces deviate from the thickness direction of the polaroid; the protective layer covers at least a portion of the side surface. If the side surface provided with the protective layer faces the binding area of the display panel, the protective layer can be used for preventing the polaroid from being scalded, thereby avoiding the polaroid from losing efficacy and ensuring the display effect of the display panel. The protective layer is covered on the side wall to protect the polaroid body, the distance between the polaroid body and the conductive structure in the binding area is not required to be increased, the screen occupation ratio of the display module is not influenced, and the narrow frame is facilitated. In addition, at least part of the side surface deviates from the thickness direction of the polaroid, namely, the extending direction of the side surface is non-perpendicular to the plane where the polaroid body is located, and the side surface is obliquely arranged, so that the area of the side surface can be increased, more protective layers can be covered on the side surface, and the anti-scalding effect of the protective layers is improved.

In one possible implementation, the display device comprises a display panel, wherein a polarizer is positioned on the light emergent side of the display panel; the display panel comprises a binding area, and the first side surface of the polaroid is close to the binding area.

In this way, the polarizer can be reduced or prevented from being scalded.

The construction of the present application, as well as other objects and advantages thereof, will be more readily understood from the description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a top view of a display module provided in an embodiment of the present application;

fig. 2 is a top view of a display panel according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 4 is a schematic diagram of a structure in which a first protective layer provided in an embodiment of the present application is melted;

FIG. 5 is a cross-sectional view of a polarizer body according to an embodiment of the present disclosure;

FIG. 6 is a cross-sectional view taken along the direction B-B in FIG. 1;

FIG. 7 is a schematic diagram of a structure in which a second protective layer provided in an embodiment of the present application is melted;

FIG. 8 is a partial top view of a polarizer body according to an embodiment of the present disclosure;

FIG. 9 is another partial top view of a polarizer body according to an embodiment of the present disclosure;

FIG. 10 is a cross-sectional view of a first bevel and a second bevel provided in an embodiment of the present application;

fig. 11 is another cross-sectional view of the first and second inclined surfaces provided in an embodiment of the present application.

Reference numerals illustrate:

100-a display module; a display panel;

101 A-A display area; 101 b-a non-display area;

102-a polarizer; 103-a polarizer body;

110-side surfaces; 111-a first side surface;

112-a second side surface; 120-a protective layer;

121-a first protective layer; 122-a second protective layer;

131-a first incline; 132-a second ramp;

141-a first edge; 142-a second edge;

150-a first film layer; 151-a first TAC film layer;

152-compensating film layer; 153-a first PSA film layer;

154-a second PSA film layer; 155-releasing film layer;

160-a second film layer; 161-a second TAC film layer;

162-a protective film layer; 170-a polarizing film layer;

181-conductive structures; 191-a first surface;

192-second surface.

Detailed Description

In the related art, a binding area is included in a non-display area of a display panel, and the binding area is used for binding an IC. The display panel of the binding area is provided with a conductive structure, the IC is connected to a flexible circuit board (Flexible Printed Circuit, FPC), conductive adhesive is arranged between the FPC and the conductive structure, and the FPC and the conductive structure are bound and connected through the conductive adhesive, so that signal transmission between the IC and the display panel is realized.

In the binding process, the high Wen Bang bonding tool is required to be abutted against one side of the FPC, which is away from the display panel, so that conductive adhesive between the FPC and the conductive structure is melted, and the FPC and the conductive structure are stably bound and connected.

However, because the temperature of the binding welding head is higher, the polaroid close to the binding area is easy to scald, so that the polaroid is invalid, and the display effect of the display module is affected. The distance between the conductive structure and the polaroid can be increased, so that the distance between the binding welding head and the polaroid is increased, and the influence of high temperature in the binding process on the polaroid is reduced. However, when the distance between the conductive structure and the polarizer is large, the area of the non-display area is large, which is unfavorable for realizing a narrow frame and affects the screen occupation ratio of the display module.

Based on at least one technical problem described above, an embodiment of the present application provides a polarizer and a display module, where the polarizer includes a polarizer body and a protective layer, the polarizer body includes a first surface and a second surface that are disposed opposite to each other along a thickness direction, and a side surface that connects the first surface and the second surface, and at least a portion of the side surface is disposed offset from the thickness direction of the polarizer; the protective layer covers at least a portion of the side surface. If the side surface provided with the protective layer faces the binding area of the display panel, the protective layer can be used for preventing the polaroid from being scalded, thereby avoiding the polaroid from losing efficacy and ensuring the display effect of the display panel. The protective layer is covered on the side wall to protect the polaroid body, the distance between the polaroid body and the conductive structure in the binding area is not required to be increased, the screen occupation ratio of the display module is not influenced, and the narrow frame is facilitated. In addition, at least part of the side surface deviates from the thickness direction of the polaroid, namely, the extending direction of the side surface is non-perpendicular to the plane where the polaroid body is located, and the side surface is obliquely arranged, so that the area of the side surface can be increased, more protective layers can be covered on the side surface, and the anti-scalding effect of the protective layers is improved.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The following will describe the display module 100 according to the embodiment of the present application with reference to fig. 1 to 11.

The present embodiment provides a display module 100, where the display module 100 can be applied to a mobile or fixed terminal with the display module 100, such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a smart bracelet, a smart watch, an ultra-personal computer, a navigator, etc.

As shown in fig. 1, the display module 100 may include a display panel 101, and the display panel 101 may be an Organic Light-Emitting Diode (OLED) display panel, a Micro Light-Emitting Diode (Micro Light Emitting Diode, micro LED or μled) display panel, or a liquid crystal (Liquid Crystal Display, LCD) display panel.

The display panel 101 may include a light-emitting surface and a backlight surface disposed opposite to each other. The light-emitting surface is used for displaying a picture, and the backlight surface is opposite to the light-emitting surface along the thickness direction of the display panel 101.

As shown in fig. 2, the display panel 101 may include a display region 101a and a non-display region 101b, the display region 101a and the non-display region 101b being disposed adjacently. For example, the non-display area 101b may surround the outer circumference of the display area 101 a. The non-display area 101b includes a bonding area, and the display panel 101 of the bonding area is provided with a conductive structure 181 (fig. 3 and 4), where the conductive structure 181 is used for bonding connection with an IC.

As shown in fig. 1, the display module 100 may include a polarizer 102, the polarizer 102 may completely cover a display area 101a of the display panel 101, and a portion of the polarizer 102 may extend into a non-display area 101 b. The polarizer 102 may cover a light-emitting surface side of the display panel 101.

The structure of the polarizer 102 provided in the embodiments of the present application is described below.

As shown in fig. 1, the polarizer 102 includes a polarizer body 103 and a protective layer 120, the polarizer body 103 is a main body of the polarizer 102, and the protective layer 120 is used for protecting the polarizer body 103, so as to prevent the polarizer body 103 from being scalded and losing efficacy, and ensure the display effect of the display module 100.

The film layer in the polarizer body 103 according to the embodiment of the present application is described below.

As shown in fig. 5, the polarizer body 103 may include a first film layer 150, a polarizing film layer 170 and a second film layer 160 that are sequentially stacked, where the first film layer 150 is located on a side of the polarizing film layer 170 near the display panel 101, and the second film layer 160 is located on a side of the polarizing film layer 170 far from the display panel 101.

The polarizing film 170 may be polyvinyl alcohol (polyvinyl alcohol, abbreviated as PVA), and has the characteristics of high transparency, high ductility, good iodine adsorption, good film forming property, etc., and the material absorbs the dichroic absorption molecules of iodine, and then performs the function of polarization through extending alignment, which is a core part of the polarizer body 103, and affects the key optical indexes such as polarization performance, transmittance, color tone, etc. of the polarizer 102.

As shown in fig. 5, the first film layer 150 may include a cellulose triacetate (Triacetyl Cellulose, abbreviated as TAC) film layer, which may be a first TAC film layer 151, and the first TAC film layer 151 is located at a side of the polarizing film layer 170 facing the display panel 101. The first TAC film layer 151 has excellent supporting property and optical uniformity, and simultaneously has high transparency, acid and alkali resistance and ultraviolet irradiation resistance, so that the polarizing film layer 170 can be protected from retraction, and the environmental weather resistance of the polarizing film layer 170 is improved.

The first film 150 may include a 1/4 wavelength compensation film 152, where the compensation film 152 and the polarizing film 170 are combined to better prevent the reflected light from affecting the display effect of the display module 100. The compensation film 152 is located on a side of the first TAC film 151 facing away from the polarizing film 170.

The compensation film 152 and the first TAC film 151 may be adhered by a pressure sensitive adhesive (pressuresensitive adhesive, abbreviated as PSA) film, and the PSA film may be the first PSA film 153. The compensation film 152 is provided with a second PSA film 154 on a side facing away from the polarizing film 170, and the second PSA film 154 is used to adhere the polarizer body 103 to the display panel 101. A release film layer 155 may be disposed on a side of the second PSA film layer 154 facing away from the polarizing film layer 170, where the release film layer 155 is used to protect the second PSA film layer 154 from being damaged before bonding, and may also avoid air bubbles generated when the second PSA film layer 154 is bonded to the display panel 101.

It is understood that the first film layer 150 may include any one or more of the first TAC film layer 151, the compensation film layer 152, the first PSA film layer 153, the second PSA film layer 154, and the release film layer 155 described above.

As shown in fig. 5, the second film 160 may include a second TAC film 161, where the second TAC film 161 is located on a side of the polarizing film 170 facing away from the first film 150, and the second TAC film 161 is used for supporting and protecting the polarizing film 170, and the principle is similar to that of the first TAC film 151 and will not be repeated.

The second film 160 may include a protective film 162, where the protective film 162 is located on a side of the second TAC film 161 facing away from the polarizing film 170, and the protective film 162 protects the polarizer body 103 from external force damaging the polarizer body 103.

It is understood that the second film layer 160 may include any one or more of the second TAC film layer 161 and the protective film layer 162 described above.

As shown in fig. 5, the polarizer body 103 includes a first surface 191 and a second surface 192 disposed opposite to each other in a thickness direction, the first surface 191 may be a surface of the polarizer body 103 facing the display panel 101, and the second surface 192 may be a surface of the polarizer body 103 facing away from the display panel 101.

As shown in fig. 1, a side surface 110 is provided between the first surface 191 and the second surface 192, and the side surface 110 is used to connect the first surface 191 and the second surface 192. As shown in fig. 1, the side surface 110 may be covered with a protective layer 120, and the protective layer 120 is used to protect the polarizer body 103.

The side surface 110 and the protective layer 120 provided in the embodiment of the present application are described below.

As shown in fig. 1, the side surfaces 110 include a first side surface 111 near the binding region, and the remaining side surfaces 110 except the first side surface 111 may be a second side surface 112, and the second side surface 112 may be a side surface 110 far from the binding region. The first side surface 111 and the second side surface 112 may be disposed along a circumferential direction of the polarizer body 103, and the first side surface 111 and the second side surface 112 are connected.

For example, the front projection of the polarizer body 103 on the display panel 101 may be generally circular, polygonal (e.g., rectangular), elliptical, or other regular or irregular shape, and the shape of the polarizer body 103 is not limited in the embodiments of the present application. For example, as shown in fig. 1, the front projection of the polarizer body 103 on the display panel 101 may be rectangular.

As shown in fig. 3 and 4, the first side surface 111 may be covered with a protective layer 120, where the protective layer 120 may be a first protective layer 121, and the first protective layer 121 is used to avoid the bonding tool from scalding the polarizer body 103. The first protective layer 121 may cover a portion of the first side surface 111 or all of the first side surface 111. The first protection layer 121 may be used to prevent the polarizer body 103 from being scalded, thereby avoiding the failure of the polarizer 102 and ensuring the display effect of the display panel 101. By covering the first protective layer 121 on the first side surface 111, the polarizer body 103 is prevented from being scalded, the distance between the polarizer body 103 and the conductive structure 181 is not required to be increased, the screen occupation ratio of the display module 100 is not affected, and the realization of a narrow frame is facilitated.

The first protective layer 121 may include at least one of a heat insulation adhesive layer and a heat absorption adhesive layer. The first protective layer 121 may include a heat absorbing adhesive layer that is at least partially melted during the high Wen Bang process, and that absorbs heat during the melting process, thereby avoiding the influence of high temperature on the polarizer body 103. The first protective layer 121 may include a heat insulating adhesive layer for isolating high temperature, thereby avoiding the influence of high temperature on the polarizer body 103. For example, the material of the heat absorbing glue layer may include silicone gel, polyacrylate, etc.; the material of the insulating glue layer may comprise an insulating resin.

As shown in fig. 6 and 7, the second side surface 112 may be covered with a protective layer 120, and the protective layer 120 may be a second protective layer 122, and the second protective layer 122 may cover a part of the second side surface 112 or all of the second side surface 112. For example, the second protective layer 122 may include a hot melt adhesive layer that is melted in a subsequent process (e.g., a full-lamination deaeration process, a temperature range of 50-70 ℃) and the melted hot melt adhesive layer may enter into cracks generated by cutting of the side of the display panel 101 to fill the cracks of the side of the display panel 101, increase the strength of the side of the display panel 101, and protect the display panel 101.

As shown in fig. 8 to 11, at least part of the side surface 110 of the polarizer body 103 is disposed offset from the thickness direction of the polarizer 102. The thickness direction of the polarizer 102 is defined as a direction in which the side surface 110 extends and a plane of the polarizer body 103 is not perpendicular, and the side surface 110 is disposed obliquely. Part of the side surface 110 or all of the side surface 110 of the polarizer body 103 may be disposed offset from the thickness direction of the polarizer 102. The offset of the side surface 110 from the thickness direction of the polarizer 102 may increase the area of the side surface 110, and thus may increase the contact area between the protective layer 120 and the side surface 110; in addition, the side surface 110 can be covered with more protective layers 120, and the protective effect of the protective layers 120 is better. For example, the first side surface 111 may be partially or entirely disposed apart from the thickness direction of the polarizer 102. The second side surface 112 may be partially or entirely disposed away from the thickness direction of the polarizer 102.

The following describes an implementation manner of the side surface 110 provided in the embodiment of the present application, which is disposed offset from the thickness direction of the polarizer 102.

As shown in fig. 8 and 9, the side surface 110 disposed offset from the thickness direction of the polarizer 102 may be rugged, so that the area of the side surface 110 may be further increased, more protective layers 120 may be attached, and the polarizer 102 may be better protected. For example, the side surface 110 disposed offset from the thickness direction of the polarizer 102 may be any one or more of a wavy surface (fig. 9), a serrated surface (fig. 8). Of course, the side surface 110 disposed offset from the thickness direction of the polarizer 102 may be a plane, which has a simple structure and low manufacturing difficulty.

As shown in fig. 10, the first side surface 111 may include a first inclined surface 131, the first inclined surface 131 having a first edge 141 adjacent to the first surface 191, the first inclined surface 131 extending obliquely outward from the first edge 141 toward the second surface 192, the first inclined surface 131 forming a first angle α with the first surface 191, the first angle α being less than 90 °.

For example, the first edge 141 of the first inclined surface 131 may be spaced apart from the first surface 191 in the thickness direction, or the first edge 141 of the first inclined surface 131 may be located on the first surface 191; that is, the distance between the first edge 141 and the first surface 191 in the thickness direction is 0 or more. The other edge of the first inclined surface 131 away from the first edge 141 and the second surface 192 may be spaced apart in the thickness direction, or the other edge of the first inclined surface 131 away from the first edge 141 may be located on the second surface 192; i.e., the distance between the edge and the second surface 192 in the thickness direction is 0 or more.

With continued reference to fig. 10, the first side surface 111 further includes a second sloped surface 132, the second sloped surface 132 having a second edge 142 proximate to the second surface 192, the second sloped surface 132 extending obliquely outward from the second edge 142 and toward the first surface 191, the second sloped surface 132 forming a second angle β with the second surface 192, the second angle β being less than 90 °.

Illustratively, the second edge 142 of the second inclined surface 132 may be spaced apart from the second surface 192 in the thickness direction, or the second edge 142 of the second inclined surface 132 may be located on the second surface 192; i.e., the distance between the second edge 142 and the second surface 192 in the thickness direction is 0 or more. The other edge of the second inclined surface 132 away from the second edge 142 may be spaced apart from the first surface 191 in the thickness direction, or the other edge of the second inclined surface 132 away from the second edge 142 may be located on the first surface 191; i.e., the distance between the edge and the first surface 191 in the thickness direction is 0 or more.

Since the first inclined surface 131 and the second inclined surface 132 are provided, the first edge 141 of the first inclined surface 131 and the second edge 142 of the second inclined surface 132 are further away from the bonding tool, and the influence of the bonding tool on the polarizer body 103 at a further portion from the bonding tool can be reduced.

In other embodiments, as shown in FIG. 11, the first slope 131 extends obliquely inward from the first edge 141 and toward the second surface 192, and the second slope 132 extends obliquely inward from the second edge 142 and toward the first surface 191. At this time, the side surface 110 of the polarizer body 103 forms a concave area, at least part of the protective layer 120 is embedded into the concave area, the concave area plays a supporting role on the protective layer 120, and can slow down the overflow of the protective layer 120 caused by gravity in the melting process, so that the protective layer 120 can be better attached to the side surface 110, the protective layer 120 and the side surface 110 are prevented from being separated due to the excessively fast overflow speed, and the influence of external water oxygen on the polarizer body 103 is prevented. The embodiment of the present application is illustrated by the first slope 131 extending outward from the first edge 141 and obliquely toward the second surface 192.

As shown in fig. 10 and 11, the front projection of the first inclined plane 131 on the display panel 101 and the front projection of the second inclined plane 132 on the display panel 101 at least partially overlap, so that the total area of the first inclined plane 131 and the second inclined plane 132 in the plane of the display panel 101 is smaller, the influence of the first inclined plane 131 and the second inclined plane 132 on the width of the frame can be reduced, and the narrow frame is facilitated.

It is understood that the first inclined surface 131 and the second inclined surface 132 may be disposed in contact with each other in the thickness direction; alternatively, there may be a space between the other edge of the first inclined surface 131, which is far from the first edge 141, and the other edge of the second inclined surface 132, which is far from the second edge 142, and the first inclined surface 131 and the second inclined surface 132 have a space in the thickness direction.

The present application will be described by taking an example in which the first inclined surface 131 and the second inclined surface 132 may be provided so as to be in contact with each other in the thickness direction.

As shown in fig. 10, the first inclined surface 131 is connected with the second inclined surface 132, and an included angle (sum of α and β in fig. 10) between the first inclined surface 131 and the second inclined surface 132 may be 90 °.

The first inclined plane 131 and the first surface 191 have a first angle α, and the second inclined plane 132 and the second surface 192 have a second angle β, where the first angle α may be greater than the second angle β. The first included angle α is larger, and the area of the first inclined surface 131 is smaller. Since the first inclined surface 131 is close to the display panel 101 and the display panel 101 is in contact with the bonding tool, the temperature of the display panel 101 in the bonding region is high, so that the first inclined surface 131 is affected by heat of both the display panel 101 and the bonding tool. Setting the first included angle α larger may reduce the area of the first inclined surface 131, thereby reducing the area of the structural film layer exposed to the high temperature environment to reduce the influence on the structural film layer exposed to the first inclined surface 131.

Illustratively, the first included angle α may range from 60 ° to 75 °, and the first included angle α may be any angle between 60 °, 65 °, 70 °, 75 °, and 60 ° to 75 °. Thereby, the first included angle alpha is prevented from being too small, and the exposed structural membrane area is prevented from being too large; and the first included angle alpha is prevented from being too large, so that the whole first inclined plane 131 is too close to the bonding head, and the influence of high temperature on the polaroid body 103 at the first inclined plane 131 can be reduced.

With continued reference to fig. 10, the second inclined surface 132 supports the protection layer 120, and when the angle of the second included angle β is smaller, the support effect is better, so that the protection layer 120 can be better prevented from being separated from the second inclined surface 132 in the melting process.

For example, the second included angle β may range from 15 ° to 30 °, and the second included angle β may be any angle between 15 °, 20 °, 25 °, 30 °, and 15 ° -30 °, so that the second inclined plane 132 may be prevented from influencing the polarizer body 103 in the display area 101a due to too small second included angle β, and may be prevented from influencing the supporting effect of the second inclined plane 132 on the protective layer 120 due to too large second included angle β.

Illustratively, the connection position of the first inclined plane 131 and the second inclined plane 132 is located in the second film 160, so that the polarizing film 170 can be exposed through the first inclined plane 131, the exposed polarizing film 170 has a smaller area, the polarizing film 170 is less affected by high temperature, and in addition, the probability of the polarizing film 170 being eroded by water and oxygen is smaller.

As illustrated in fig. 3, the connection position of the first inclined plane 131 and the second inclined plane 132 may be located in the polarizing film layer 170, and the connection position may be located in the polarizing film layer 170 to increase the thickness of the film layer through which the second inclined plane 132 passes, thereby preventing the thickness of the film layer through which the second inclined plane 132 passes from being too small to increase the difficulty of preparation, compared to the connection position of the first inclined plane 131 and the second inclined plane 132 being located in the second film layer 160. For example, in the thickness direction of the polarizer body 103, the polarizing film layer 170 includes a first portion and a second portion, the first portion and the second portion are respectively located at opposite sides of the connection position, the first portion is close to the first surface 191, and the second portion is close to the second surface 192. Wherein, the first inclined surface 131 is located at the first portion, and the second inclined surface 132 is located at the second portion. Since the first inclined surface 131 has a smaller area than the film layer exposed by the second inclined surface 132, the thickness of the first portion may be set to be greater than that of the second portion, thereby reducing the exposed area of the polarizing film layer 170 to reduce the influence of high temperature on the polarizing film layer 170.

In other embodiments, the second side surface 112 may include a third inclined surface, which has a third edge adjacent to the first surface 191, and the third inclined surface extends from the third edge outwards and obliquely towards the second surface 192, and forms a third included angle with the first surface 191, and the principle of the third inclined surface is similar to that of the first inclined surface 131 and will not be described again.

The second side surface 112 may include a fourth inclined surface having a fourth edge adjacent to the second surface 192, the fourth inclined surface extending from the fourth edge outwards and inclined towards the first surface 191, and the fourth inclined surface and the second surface 192 form a fourth included angle, which is similar to the second inclined surface 132, and will not be described again.

In the embodiment in which the first inclined surface 131, the second inclined surface 132, the third inclined surface, and the fourth inclined surface are provided at the same time, the first included angle and the third included angle may be the same or different; the second included angle and the fourth included angle may be the same or different; the first inclined surface 131 and the third inclined surface may be the same or different; the second bevel 132 and the fourth bevel may be the same or different.

It should be noted that, the numerical values and the numerical ranges referred to in the embodiments of the present application are approximate values, and may have a certain range of errors under the influence of the manufacturing process, and those errors may be considered to be negligible by those skilled in the art.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The polarizer is characterized by comprising a polarizer body and a protective layer, wherein the polarizer body comprises a first surface and a second surface which are oppositely arranged along the thickness direction, and a side surface which connects the first surface and the second surface, and at least part of the side surface is arranged away from the thickness direction of the polarizer; the protective layer covers at least part of the side surface;

the side surface includes a first side surface configured to be disposed proximate to a binding region; the protective layer covers at least part of the first side surface; the first side surface is partially or entirely disposed away from the thickness direction of the polarizer.

2. The polarizer of claim 1, wherein the side surface further comprises a second side surface, the first side surface and the second side surface meeting along a circumferential direction of the polarizer;

the protective layer comprises a first protective layer, and the first protective layer covers the first side surface; the first protective layer comprises a heat insulation adhesive layer and/or a heat absorption adhesive layer.

3. The polarizer of claim 2, wherein the protective layer comprises a second protective layer covering the second side surface; the second protective layer includes a hot melt adhesive layer.

4. A polarizer according to claim 2 or 3, wherein the first side surface comprises a first bevel having a first edge adjacent to the first surface, the first bevel extending outwardly from the first edge and obliquely toward the second surface, the first bevel forming a first angle with the first surface.

5. A polarizer according to claim 4, wherein the first included angle is in the range of 60 ° to 75 °.

6. The polarizer of claim 4, wherein the second side surface includes a third bevel having a third edge proximate the first surface, the third bevel extending outward from the third edge and obliquely toward the second surface.

7. The polarizer of claim 4, wherein the first side surface further comprises a second bevel having a second edge proximate the second surface, the second bevel extending outward from the second edge and obliquely toward the first surface, the second bevel forming a second included angle with the second surface.

8. A polarizer according to claim 7, wherein the second included angle is in the range of 15 ° to 30 °.

9. The polarizer of claim 7, wherein the second side surface includes a fourth bevel having a fourth edge proximate the second surface, the fourth bevel extending outward from the fourth edge and obliquely toward the first surface.

10. The polarizer of claim 7, wherein the first slope and the second slope are disposed to meet in a thickness direction.

11. The polarizer of claim 10, wherein the sum of the first included angle and the second included angle is 90 °.

12. The polarizer of claim 10, wherein the polarizer body comprises a first film layer, a polarizing film layer, and a second film layer that are sequentially stacked, the first film layer being positioned on a side of the polarizing film layer that is adjacent to the first surface, the second film layer being positioned on a side of the polarizing film layer that is adjacent to the second surface;

13. A polarizer according to any one of claims 1 to 3, wherein the side surface offset from the thickness direction of the polarizer includes at least one of a wavy surface and a serrated surface.

14. A display module comprising a polarizer according to any one of claims 1-13.

15. The display module of claim 14, comprising a display panel, the polarizer being positioned on a light exit side of the display panel;

the display panel comprises a binding area, and the first side surface of the polaroid is close to the binding area.