Display module and display device

Abstract

The invention provides a display module and a display device.The display module comprises a display panel, and the display panel comprises a display area, a binding area and a bending area located between the display area and the binding area; the polaroid adhesive layer is located on one side of the display panel, the polaroid adhesive layer comprises a main body part and a pattern part which are separated from each other, the main body part covers the display area, and the pattern part is located in the bending area; the bending protection layer and the polaroid adhesive layer are located on the same side of the display panel, the bending protection layer is located in the bending area, and the bending protection layer is bonded with the pattern part. According to the display module, the peeling risk of the bending protection layer and the polaroid adhesive layer in the bending process of the display module can be reduced, water vapor is prevented from entering the display module to corrode an internal metal structure, and the yield of the display module is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of displays, and more particularly, to a display module and a display device. Background Art

[0002] An OLED (Organic Light-Emitting Diode) display device is a device that uses a multi-layer organic thin film structure to generate electroluminescence. OLED display screens are thinner, brighter, lower in power consumption, faster in response, higher in clarity, better in flexibility, and higher in luminous efficiency, and thus are widely used.

[0003] However, in the related art, the bending protective layer of the OLED display module is in contact with the edge of the polarizer adhesive layer. During the bending preparation process of the display module, due to the deformation of the polarizer adhesive layer material, the polarizer adhesive layer will squeeze the bottom of the bending protective layer, resulting in the peeling off of the bending protective layer and affecting the yield of the display module.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] In view of this, the present disclosure provides a display module and a display device to at least solve the problem of peeling between the bending protective layer and the polarizer adhesive layer during the bending process of the existing display module.

[0006] In one aspect, an embodiment of the present disclosure provides a display module, including: a display panel, the display panel including a display area, a bonding area, and a bending area located between the display area and the bonding area; a polarizer adhesive layer, the polarizer adhesive layer being located on one side of the display panel, the polarizer adhesive layer including a main body portion and a pattern portion that are separated from each other, the main body portion covering the display area, and the pattern portion being located in the bending area; a bending protective layer, the bending protective layer being located on the same side of the display panel as the polarizer adhesive layer, the bending protective layer being located in the bending area, and the bending protective layer being bonded to the pattern portion.

[0007] In another aspect, an embodiment of the present disclosure further provides a display device including the above display module.

[0008] Compared with the prior art, the present disclosure has at least the following technical effects:

[0009] The display module and the display device of the present disclosure divide the polarizer adhesive layer into a separated main body part and a pattern part, and bond the pattern part to the bending protection layer, so that during the bending preparation process of the display module, only the main body part of the polarizer adhesive layer will undergo a large deformation. Since the pattern part is small, its deformation amount is small or even no deformation occurs. Furthermore, the main body part with a large deformation will not squeeze the bottom of the bending protection layer due to being separated from the pattern part, and the pattern part with a small deformation amount or even no deformation has a small extrusion on the bending protection layer, reducing the risk of peeling of the bending protection layer, preventing water vapor from entering the display module to corrode the internal metal structure, and improving the yield rate of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0011] Figure 1 is a schematic structural diagram of a display module in the related art;

[0012] Figure 2 is Figure 1 a schematic structural diagram of the display module before bending in ;

[0013] Figure 3 is Figure 1 a partial structural diagram of the bending area of the display module in ;

[0014] Figure 4 is a schematic structural diagram of a display module before bending provided by an embodiment of the present disclosure;

[0015] Figure 5 is Figure 4 a schematic structural diagram of the bending area after bending of the display module in ;

[0016] Figure 6 is Figure 4 a schematic structural diagram of the display module after bending in ;

[0017] Figure 7 is a top view of a display module provided by an embodiment of the present disclosure;

[0018] Figure 8 is a top view of another display module provided by an embodiment of the present disclosure;

[0019] Figure 9 is a top view of yet another display module provided by an embodiment of the present disclosure;

[0020] Figure 10 It is a top view of another display module provided by an embodiment of the present disclosure;

[0021] Figure 11 It is a top view of another display module provided by an embodiment of the present disclosure;

[0022] Figure 12 It is a schematic structural diagram of a display device provided by an embodiment of the present disclosure;

[0023] Reference numerals:

[0024] 100, display module;

[0025] 110, display panel;

[0026] 111, display area;

[0027] 112, bonding area;

[0028] 113, bending area;

[0029] 120, polarizer adhesive layer;

[0030] 121, main body part;

[0031] 122, pattern part;

[0032] 122a, first sub-pattern;

[0033] 122b, second sub-pattern;

[0034] 123, groove;

[0035] 130, bending protective layer;

[0036] 140, polarizer;

[0037] 150, optical adhesive layer;

[0038] 160, backplane layer;

[0039] 161, first backplane;

[0040] 162, second backplane;

[0041] 170, cover plate;

[0042] D1, first spacing;

[0043] D2, second spacing;

[0044] H, depth;

[0045] X, first direction;

[0046] Y, second direction;

[0047] 200. Display device. Detailed implementation manners

[0048] Example implementation manners will now be described more fully with reference to the accompanying drawings. However, the example implementation manners can be implemented in various forms and should not be construed as limited to the implementation manners set forth herein. On the contrary, these implementation manners are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example implementation manners to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their repetitive description will be omitted.

[0049] The terms "first", "second", and the like used in the specific description do not denote any order, quantity, or importance, but are merely used to distinguish different components. In addition, in the description of this disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for convenience of description and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this disclosure.

[0050] It should be noted that, without conflict, the features in the embodiments of this disclosure and different embodiments can be combined with each other.

[0051] An OLED (Organic Light-Emitting Diode) display device is a device that uses a multi-layer organic thin film structure to generate electroluminescence. OLED display screens are thinner, brighter, lower in power consumption, faster in response, higher in clarity, better in flexibility, and higher in luminous efficiency, and thus are widely used.

[0052] However, in the related art, the bending protection layer of the OLED display module is in contact with the edge of the polarizer adhesive layer. During the bending preparation process of the display module, due to the deformation of the polarizer adhesive layer material, the polarizer adhesive layer will squeeze the bottom of the bending protection layer, resulting in the peeling off of the bending protection layer and affecting the yield of the display module.

[0053] Specifically, as Figure 1 and Figure 2 shown, the display module 100' includes a display panel 110', a polarizer adhesive layer 120', and a bending protection layer 130'. Among them, the polarizer adhesive layer 120' is located on one side of the display panel 110'. The bending protection layer 130' and the polarizer adhesive layer 120' are located on the same side of the display panel 110'. The bending protection layer 130' is bonded to the polarizer adhesive layer 120'.

[0054] Furthermore, as Figure 3As shown, during the preparation of the display module 100', the bonding area of the display panel 110' needs to be bent to the back of the display area for bonding preparation. However, during the bending process, the polarizer adhesive layer 120' will be deformed, causing the upper surface of the polarizer adhesive layer 120' to move away from the bending protection layer 130', and the lower surface to approach the bending protection layer 130', thereby squeezing the bottom of the bending protection layer 130', resulting in the peeling of the bonding between the bending protection layer 130' and the polarizer adhesive layer 120'. Moisture will enter the display module 100' from the peeling position, corroding the metal structure inside the display module 100' and affecting the yield of the display module 100'.

[0055] In view of this, on the one hand, as Figure 4 shown, an embodiment of the present disclosure provides a display module 100. The display module 100 includes: a display panel 110, a polarizer adhesive layer 120, and a bending protection layer 130.

[0056] Among them, the display panel 110 includes a display area 111, a bonding area 112, and a bending area 113 located between the display area 111 and the bonding area 112. The side of the display area 111 facing the polarizer adhesive layer 120 emits light, which is used to provide the display of the display module 100. The bonding area 112 is used to connect the driving chip and the devices of the flexible circuit board to drive the light-emitting state of the display area 111 or receive the light-emitting signal of the display area 111. The bending area 113 is used to connect the display area 111 and the bonding area 112, and a plurality of traces are formed in the bending area 113 to complete the signal transmission between the display area 111 and the bonding area 112.

[0057] Among them, the polarizer adhesive layer 120 is located on one side of the display panel 110. The polarizer adhesive layer 120 includes a separated main body portion 121 and a pattern portion 122. The main body portion 121 covers the display area 111, and the pattern portion 122 is located in the bending area 113. The polarizer adhesive layer 120 is used to bond the polarizer and the display panel 110. Specifically, the preparation of the polarizer adhesive layer 120 can be achieved by separating the glue of the main body portion 121 and the pattern portion 122 by a certain distance during the glue coating preparation of the polarizer adhesive layer 120, ensuring that the glue of the main body portion 121 and the pattern portion 122 remains separated after being pressed and solidified; or the preparation of the polarizer adhesive layer 120 can also be achieved by first preparing a complete polarizer adhesive layer 120, and then forming the separated main body portion 121 and pattern portion 122 through etching and other means, finally ensuring that the main body portion 121 and the pattern portion 122 do not generate mutual forces or the mutual forces are extremely small during the bending preparation process of the display module 100.

[0058] Among them, the bent protective layer 130 and the polarizer adhesive layer 120 are on the same side of the display panel 110. The bent protective layer 130 is at least partially located in the bent area 113, and the bent protective layer 130 is adhered to the pattern portion 122. The bent protective layer 130 can be prepared by curing a protective adhesive. Since the bent area 113 of the display panel 110 needs to maintain a bent state during preparation and subsequent finished products, the display module 100 is provided with the bent protective layer 130 to protect the bent area 113 of the display panel 110, so as to avoid physical damage and chemical corrosion of the bent area 113. In addition, the bent protective layer 130 can also improve the stress distribution in the entire display panel 110 and avoid damage to the display panel 110 during the bending process.

[0059] In this embodiment, by dividing the polarizer adhesive layer 120 into a separated main body portion 121 and a pattern portion 122, and bonding the pattern portion 122 to the bent protective layer 130, during the bending preparation process of the display module 100, only the main body portion 121 of the polarizer adhesive layer 120 will undergo a large deformation. Since the pattern portion 122 is small, its deformation amount is small or even does not deform. Furthermore, the main body portion 121 with a large deformation will not squeeze the bottom of the bent protective layer 130 due to being separated from the pattern portion 122, and the pattern portion 122 with a small or even no deformation squeezes the bent protective layer 130 less, reducing the risk of peeling of the bent protective layer 130, avoiding water vapor from entering the display module 100 to corrode the internal metal structure, and improving the yield of the display module 100.

[0060] In some embodiments, as Figure 5 shown, the thickness of the polarizer adhesive layer 120 is 5 - 30 microns; the ratio of the first distance D1 between the main body portion 121 and the pattern portion 122 to the thickness of the polarizer adhesive layer 120 is 0.5 - 2. Specifically, the thickness of the polarizer adhesive layer 120 can be any value among 5 microns, 10 microns, 15 microns, 20 microns, 25 microns or 30 microns, and the present disclosure does not limit this. The ratio of the first distance D1 between the main body portion 121 and the pattern portion 122 to the thickness of the polarizer adhesive layer 120 can be any value among 0.5, 1.0, 1.5 or 2, and the present disclosure does not limit this. Through the above thickness setting of the polarizer adhesive layer 120 in this embodiment, the bonding and fixing strength of the polarizer and the display panel 110 can be improved, while avoiding the excessive thickness of the polarizer adhesive layer 120 from affecting the light transmittance of the display module 100. This embodiment also provides sufficient space for the deformation of the main body portion 121 and the pattern portion 122 during the bending preparation process of the display module 100 through the above setting of the first distance D1 and the thickness of the polarizer adhesive layer 120, so that the main body portion 121 will not contact and squeeze the pattern portion 122 even if it deforms greatly, and then squeeze the bent protective layer 130, thereby avoiding the peeling of the bent protective layer 130 and the polarizer adhesive layer 120.

[0061] In some embodiments, the material of the polarizer adhesive layer 120 includes one or a combination of at least two of acrylic adhesive, acrylate polyurethane adhesive, or ultraviolet curable adhesive. The material of the polarizer adhesive layer 120 may also be a glue of other materials, and the present disclosure does not limit this. Specifically, since acrylic adhesive and acrylate polyurethane adhesive have certain flexibility, the curing operation of acrylic adhesive and acrylate polyurethane adhesive can be performed before or after the bending of the display module 100. Since the ultraviolet curable adhesive (UV adhesive) has a relatively high hardness after curing, when the ultraviolet curable adhesive is selected to be cured by ultraviolet irradiation after the bending of the display module 100, it is possible to avoid excessive stress in the cured ultraviolet curable adhesive during the bending process, thereby avoiding peeling off from the polarizer and the display panel 110; or when the ultraviolet curable adhesive is selected to be cured by ultraviolet irradiation before the bending of the display module 100, the deformation amount of the main body portion 121 and the pattern portion 122 of the polarizer adhesive layer 120 can be reduced, thereby reducing the extrusion on the bending protection layer 130, and thus avoiding peeling off between the bending protection layer 130 and the polarizer adhesive layer 120.

[0062] In some embodiments, the material of the main body portion 121 is one or a combination of two of acrylic adhesive or acrylate polyurethane; the material of the pattern portion 122 is ultraviolet curable adhesive. In this embodiment, since acrylic adhesive and acrylate polyurethane adhesive have certain flexibility, during the bending process of the display module 100, the stress generated by the main body portion 121 can be made smaller. Even if the deformation of the main body portion 121 is large, the setting of the first distance D1 between the main body portion 121 and the pattern portion 122 can still be used to avoid the deformed main body portion 121 from extruding the pattern portion 122, thereby reducing the extrusion on the bending protection layer 130 and avoiding peeling off between the bending protection layer 130 and the polarizer adhesive layer 120. In this embodiment, since the ultraviolet curable adhesive has a relatively high hardness after curing, when the ultraviolet curable adhesive is selected to be cured by ultraviolet irradiation before the bending of the display module 100, the deformation amount of the pattern portion 122 before and after the bending of the display module 100 is relatively small, thereby reducing the extrusion of the pattern portion 122 on the bending protection layer 130, and thus avoiding peeling off between the bending protection layer 130 and the polarizer adhesive layer 120.

[0063] In some embodiments, such as Figure 6As shown in the figure, the display module 100 further includes a polarizer 140 and an optical adhesive layer 150. Among them, the polarizer 140 is located on the side of the polarizer adhesive layer 120 away from the display panel 110. The optical adhesive layer 150 is located on the side of the polarizer 140 away from the polarizer adhesive layer 120. The thickness of the bending protection layer 130 is greater than the thickness of the polarizer adhesive layer 120. The bending protection layer 130 is also adhered to the polarizer 140. The adhesion height of the bending protection layer 130 and the polarizer 140 is less than the sum of the heights of the polarizer 140 and the pattern part 122, so as to avoid the bending protection layer 130 climbing onto the polarizer protective film during curing, and further avoid forming sharp corners on the side of the bending protection layer 130 close to the display panel 110 after the polarizer protective film is torn off, thereby avoiding the presence of air bubbles in the display module 100 after the optical adhesive layer 150 is attached. Specifically, the polarizer 140 is used to improve the contrast of the display panel 110, improve the viewing angle and reduce the reflectivity. The optical adhesive layer 150 can be an OCA (Optically Clear Adhesive) optical adhesive. The OCA optical adhesive can achieve full adhesion, reduce the existence of the air layer, enhance the display effect, improve the contrast and clarity, and reduce reflection and glare. In this embodiment, when the polarizer adhesive layer 120 is divided into a separated main body part 121 and a pattern part 122, during the bending preparation process of the display module 100, the sum of the extrusion forces caused by the deformation of the pattern part 122 of the polarizer adhesive layer 120 and the polarizer 140 on the bending protection layer 130 can be reduced, and further the peeling risk between the bending protection layer 130 and the polarizer 140 can be reduced, avoiding water vapor entering the display module 100 to corrode the internal metal structure, and improving the yield of the display module 100.

[0064] In some embodiments, the thickness of the polarizer 140 is 60 - 80 microns; the thickness of the bending protection layer 130 is 30 - 60 microns. Specifically, the thickness of the polarizer 140 can be any value among 60 microns, 65 microns, 70 microns, 75 microns or 80 microns, and the present disclosure does not limit this. The thickness of the bending protection layer 130 can be any value among 30 microns, 35 microns, 40 microns, 45 microns, 50 microns, 55 microns or 60 microns, and the present disclosure does not limit this. The above settings of the thicknesses of the polarizer 140 and the bending protection layer 130 in this embodiment, combined with the thickness setting of the polarizer adhesive layer 120, can make the adhesion height of the bending protection layer 130 and the polarizer 140 less than the sum of the heights of the polarizer 140 and the pattern part 122, so as to avoid the bending protection layer 130 climbing onto the polarizer protective film during curing, and further avoid forming sharp corners on the side of the bending protection layer 130 close to the display panel 110 after the polarizer protective film is torn off, thereby avoiding the presence of air bubbles in the display module 100 after the optical adhesive layer 150 is attached.

[0065] In some embodiments, the material of the bending protection layer 130 includes an ultraviolet curable adhesive. After curing, the ultraviolet curable adhesive has a relatively high hardness, which enables the bending protection layer 130 to effectively protect the bending area 113 of the display panel 110, avoiding physical damage and chemical corrosion of the bending area 113, and also avoiding damage to the display panel 110 during the bending process. The ultraviolet curable adhesive has a fast curing speed, which can improve the preparation speed of the display module 100.

[0066] In some embodiments, as Figure 7 shown, the pattern portion 122 includes at least one strip-shaped first sub-pattern 122a extending along the first direction X. Specifically, in certain embodiments, the number of the strip-shaped first sub-patterns 122a of the pattern portion 122 can be one. In this case, the first sub-pattern 122a is located in the bending area 113 and adhered to the bending protection layer 130, and the main body portion 121 covers the display area 111 of the display panel 110. In certain embodiments, the number of the strip-shaped first sub-patterns 122a of the pattern portion 122 can also be two or more, and the present disclosure does not limit this. The setting of the first sub-pattern 122a in this embodiment can prevent the glue material of the bending protection layer 130 from penetrating into the gap between the main body portion 121 and the pattern portion 122 before curing, thereby reducing the risk that the glue material of the bending protection layer 130 enters the display area 111 of the display panel 110 to affect the display of the display panel 110.

[0067] In some embodiments, as Figure 8As shown, the number of the first sub-patterns 122a is at least two. The first sub-patterns 122a are arranged along the second direction Y, and the first sub-patterns 122a are separated from each other. The first direction X intersects with the second direction Y. Specifically, in some embodiments, the number of the strip-shaped first sub-patterns 122a of the pattern portion 122 may be two. In this case, both of the two first sub-patterns 122a are located in the bending region 113, wherein the first sub-pattern 122a closer to the bending protection layer 130 along the second direction Y is bonded to the bending protection layer 130, and the main body portion 121 covers the display area 111 of the display panel 110. A gap is formed between the two first sub-patterns 122a, and a gap is also formed between the first sub-pattern 122a closer to the main body portion 121 along the second direction Y and the main body portion 121, that is, two gaps are formed between the bending protection layer 130 and the main body portion 121. In some embodiments, the number of the strip-shaped first sub-patterns 122a of the pattern portion 122 may also be three or more, that is, three or more gaps are formed between the bending protection layer 130 and the main body portion 121, and the present disclosure does not limit this. By arranging the first sub-patterns 122a in this embodiment, at least two gaps are formed between the bending protection layer 130 and the main body portion 121, so that it is further possible to prevent the glue material of the bending protection layer 130 from infiltrating into the gap between the main body portion 121 and the pattern portion 122 before curing, and further reduce the risk that the glue material of the bending protection layer 130 enters the display area 111 of the display panel 110 to affect the display of the display panel 110. At the same time, by forming at least two gaps between the bending protection layer 130 and the main body portion 121 in this embodiment, it is also possible to further reduce or even avoid the extrusion of the main body portion 121 with a large deformation on the bending protection layer 130, and further reduce the risk of peeling of the bending protection layer 130.

[0068] In some embodiments, as Figure 9 shown, at least one groove 123 recessed away from the bending protection layer 130 is formed on the side of the first sub-pattern 122a bonded to the bending protection layer 130, and the depth H of the groove 123 is less than or equal to 50 microns. Specifically, the shape of the groove 123 may be triangular (as Figure 9As shown in the figure, it can be a rectangle, a square, a semi - circle, etc., and the present disclosure does not limit this. The depth H of the groove 123 along the second direction Y can be any value among 10 microns, 20 microns, 30 microns, 40 microns, or 50 microns, and the present disclosure does not limit this. Further, the width of the first sub - pattern 122a along the second direction Y is greater than or equal to 50 microns, so as to ensure that the groove 123 does not penetrate the first sub - pattern 122a, and it can avoid the adhesive material of the bending protection layer 130 from seeping into the gap between the main body part 121 and the pattern part 122 before curing, thereby reducing the risk that the adhesive material of the bending protection layer 130 enters the display area 111 of the display panel 110 and affects the display of the display panel 110. In this embodiment, by setting the groove 123 in the first sub - pattern 122a, the volume of the first sub - pattern 122a can be reduced, and then the deformation of the first sub - pattern 122a when the display device 200 is bent can be reduced, so as to reduce the extrusion of the pattern part 122 (that is, the first sub - pattern 122a with the groove 123) on the bending protection layer 130, and further reduce the risk of peeling off of the bending protection layer 130.

[0069] In some embodiments, as Figure 10 shown, the pattern part 122 includes at least two second sub - patterns 122b that extend along the first direction X and are separated from each other. The ratio of the second spacing D2 between two adjacent second sub - patterns 122b to the thickness of the polarizer adhesive layer 120 is 0.5 - 4. Specifically, the ratio of the second spacing D2 to the thickness of the polarizer adhesive layer 120 can be any value among 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, or 4, and the present disclosure does not limit this. In this embodiment, by setting the pattern part 122 as a plurality of mutually separated second sub - patterns 122b, the volume of the pattern part 122 and the contact area between the pattern part 122 and the bending protection layer 130 can be reduced, thereby reducing the extrusion of the pattern part 122 on the bending protection layer 130, and further reducing the risk of peeling off of the bending protection layer 130. At the same time, in this embodiment, by setting the ratio of the second spacing D2 to the thickness of the polarizer adhesive layer 120 within the above range, it can avoid the adhesive material of the bending protection layer 130 from seeping into the gap between the main body part 121 and the pattern part 122 before curing, thereby reducing the risk that the adhesive material of the bending protection layer 130 enters the display area 111 of the display panel 110 and affects the display of the display panel 110.

[0070] In some embodiments, as Figure 11As shown, the pattern portion 122 includes a strip-shaped first sub-pattern 122a extending along the first direction X and at least two second sub-patterns 122b extending along the first direction X and separated from each other. Along the second direction Y, the second sub-pattern 122b is located between the first sub-pattern 122a and the bending protection layer 130, the second sub-pattern 122b is bonded to the bending protection layer 130, and the first direction X intersects with the second direction Y. The ratio of the second spacing D2 between two adjacent second sub-patterns 122b to the thickness of the polarizer glue layer 120 is 0.5 to 4. Specifically, the setting of the ratio of the second spacing D2 to the thickness of the polarizer glue layer 120 can refer to the aforementioned embodiment, which will not be repeated here. Moreover, along the second direction Y, a gap is formed between the second sub-pattern 122b and the first sub-pattern 122a, and a gap is formed between the first sub-pattern 122a and the main body 121. In this embodiment, the pattern portion 122 includes a first sub-pattern 122a and a second sub-pattern 122b, so that the contact area between the pattern portion 122 and the bending protection layer 130 can be reduced, thereby reducing the squeezing of the bending protection layer 130 by the pattern portion 122, and reducing the risk of peeling off the bending protection layer 130; at the same time, it can prevent the glue material of the bending protection layer 130 from penetrating into the gap between the main body portion 121 and the pattern portion 122 before curing, thereby reducing the risk of the glue material of the bending protection layer 130 entering the display area 111 of the display panel 110 to affect the display of the display panel 110; in addition, the formation of two gaps between the bending protection layer 130 and the main body portion 121 can further reduce or even avoid the squeezing of the bending protection layer 130 by the main body portion 121 with a larger deformation, and further reduce the risk of peeling off the bending protection layer 130.

[0071] In some embodiments, continue to refer to Figure 6 , the display module 100 further includes: a backplane layer 160 and a cover plate 170. The backplane layer 160 is located on the side of the display panel 110 away from the polarizer adhesive layer 120, and the backplane layer 160 includes a first backplane 161 and a second backplane 162 separated from each other, the first backplane 161 covers the display area 111, and the second backplane 162 covers the binding area 112. The cover plate 170 is located on the side of the optical adhesive layer 150 away from the polarizer 140. Since the display panel 110 is flexible, the backplane layer 160 is required to support and fix it, and at the same time facilitate the bending of the display panel 110. The first backplane 161 and the second backplane 162 of the backplane layer 160 are used to support the display area 111 and the binding area 112 of the display panel 110, respectively, and leave a gap in the bending area 113 to facilitate the bending of the display panel 110. The cover plate 170 is also at least partially located in the bending area 113. The portion of the cover plate 170 located in the bending area 113 does not contact the bending protection layer 130 to prevent the cover plate 170 from being adhered to the protective glue of the bending protection layer 130 , causing the cover plate 170 to transfer the protective glue to other film structures during the preparation of the display module 100 .

[0072] In some alternative embodiments, the display panel 110 may be a liquid crystal display (LCD) panel, an organic light emitting diode (OLED) display panel 110, an active-matrix organic light-emitting diode (AMOLED) display panel 110, a micro-light emitting diode (Micro-LED) display panel 110, etc., and the present application does not limit this. The above-described display panels 110 are all exemplified by the OLED display panel 110 to schematically illustrate some embodiments of the present application. It is easy to understand that the implementation manners of the present application are not limited thereto, and any other display panel 110 may also be used as long as it has the same technical concept.

[0073] For the display module 100 of the present disclosure, by dividing the polarizer adhesive layer 120 into a separated main body portion 121 and a pattern portion 122, and bonding the pattern portion 122 to the bending protection layer 130, during the bending preparation process of the display module 100, only the main body portion 121 of the polarizer adhesive layer 120 will undergo a large deformation. Since the pattern portion 122 is small, its deformation amount is small or even no deformation occurs. Furthermore, the main body portion 121 with a large deformation will not squeeze the bottom of the bending protection layer 130 because it is separated from the pattern portion 122, and the pattern portion 122 with a small or even no deformation amount exerts a small extrusion on the bending protection layer 130, reducing the risk of peeling of the bending protection layer 130, preventing moisture from entering the display module 100 to corrode the internal metal structure, and improving the yield of the display module 100.

[0074] On the other hand, as Figure 12 shown, the embodiment of the present disclosure also provides a display device 200. The display device 200 includes the display module 100 provided in any embodiment of the present disclosure. The display device 200 provided in the embodiment of the present disclosure may be Figure 12 the mobile phone shown, or any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, in-vehicle display, medical device, industrial control device, touch interaction terminal, etc., and the embodiment of the present disclosure does not make special limitations on this. The display device 200 may also have a folding function or a folding display structure.

[0075] For the specific implementation manners and technical effects of the display device 200 of the present disclosure, reference may be made to the specific embodiments of the above display module 100, and the repeated parts will not be elaborated.

[0076] In summary, for the display module and the display device of the present disclosure, by dividing the polarizer adhesive layer into a separated main part and a pattern part, and bonding the pattern part to the bending protection layer, during the bending preparation process of the display module, only the main part of the polarizer adhesive layer will undergo a large deformation. Since the pattern part is small, its deformation amount is small or even no deformation occurs. Furthermore, the main part with a large deformation will not squeeze the bottom of the bending protection layer due to being separated from the pattern part, and the pattern part with a small or even no deformation amount exerts less extrusion on the bending protection layer, reducing the risk of peeling of the bending protection layer, preventing moisture from entering the display module to corrode the internal metal structure, and improving the yield of the display module.

[0077] The above content is a further detailed description of the present disclosure in combination with specific optional implementation manners. It cannot be determined that the specific implementation of the present disclosure is only limited to these descriptions. For those of ordinary skill in the technical field to which the present disclosure belongs, without departing from the concept of the present disclosure, several simple deductions or substitutions can be made, which should all be regarded as belonging to the protection scope of the present disclosure.

Claims

1. A display module, characterized in that, Comprising: A display panel, the display panel including a display area, a bonding area, and a bending area located between the display area and the bonding area; A polarizer adhesive layer, the polarizer adhesive layer being located on one side of the display panel, the polarizer adhesive layer including a separated main body portion and a pattern portion, the main body portion covering the display area, and the pattern portion being located in the bending area; A bending protection layer, the bending protection layer being on the same side of the display panel as the polarizer adhesive layer, the bending protection layer being at least partially located in the bending area, and the bending protection layer being bonded to the pattern portion.

2. The display module according to claim 1, wherein The thickness of the polarizer adhesive layer is 5 to 30 microns; the ratio of the first distance between the main body portion and the pattern portion to the thickness of the polarizer adhesive layer is 0.5 to 2.

3. The display module according to claim 1, characterized in that, The material of the polarizer adhesive layer includes: one or a combination of at least two of acrylic adhesive, acrylate polyurethane adhesive, or ultraviolet curable adhesive.

4. The display module according to claim 3, wherein The material of the main body portion is one or a combination of two of acrylic adhesive or acrylate polyurethane; the material of the pattern portion is ultraviolet curable adhesive.

5. The display module according to claim 1, characterized in that, Further comprising: A polarizer, the polarizer being located on the side of the polarizer adhesive layer away from the display panel; An optical adhesive layer, the optical adhesive layer being located on the side of the polarizer away from the polarizer adhesive layer; The thickness of the bending protection layer is greater than the thickness of the polarizer adhesive layer, the bending protection layer is also bonded to the polarizer, and the bonding height of the bending protection layer with the polarizer is less than the sum of the heights of the polarizer and the pattern portion.

6. The display module according to claim 5, wherein, The thickness of the polarizer is 60 to 80 microns; the thickness of the bending protection layer is 30 to 60 microns.

7. The display module according to claim 5, wherein The material of the bending protection layer includes ultraviolet curable adhesive.

8. The display module according to claim 1, wherein The pattern portion includes at least one strip-shaped first sub-pattern extending in a first direction.

9. The display module according to claim 8, wherein The number of the first sub-patterns is at least two, the first sub-patterns are arranged in a second direction, the first sub-patterns are separated from each other, and the first direction intersects the second direction.

10. The display module according to claim 8, wherein One side of the first sub-pattern bonded to the bending protection layer has at least one groove recessed away from the bending protection layer, and the depth of the groove is less than or equal to 50 microns.

11. The display module according to claim 1, wherein The pattern portion includes at least two second sub-patterns extending in the first direction and separated from each other, and the ratio of the second distance between adjacent two of the second sub-patterns to the thickness of the polarizer adhesive layer is 0.5 to 4.

12. The display module according to claim 1, wherein, The pattern portion includes a strip-shaped first sub-pattern extending in the first direction and at least two second sub-patterns extending in the first direction and separated from each other; in the second direction, the second sub-patterns are located between the first sub-pattern and the bending protection layer, the second sub-patterns are bonded to the bending protection layer, the first direction intersects the second direction; and the ratio of the second distance between adjacent two of the second sub-patterns to the thickness of the polarizer adhesive layer is 0.5 to 4.

13. The display module according to claim 5, characterized in that, Further comprising: A backplane layer, the backplane layer being located on the side of the display panel away from the polarizer adhesive layer, the backplane layer including a separated first backplane and a second backplane, the first backplane covering the display area, and the second backplane covering the bonding area; A cover plate, the cover plate being located on a side of the optical adhesive layer away from the polarizer.

14. A display device, characterized in that, A display module comprising the display module according to any one of claims 1 to 13.

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