Display panel, display panel preform and display device

Abstract

The application provides a display panel, a display panel prefabricated part and a display device. The display panel comprises a substrate, an encapsulation layer and a polarizer. The substrate comprises a display area and a bonding area on one side of the display area. The polarizer comprises a polarizing layer and a first pressure-sensitive adhesive layer. In the display panel, the pressure-sensitive adhesive layer on the polarizer connected with the encapsulation layer is extended to the bonding area, so that the orthographic projection of the pressure-sensitive adhesive layer on the substrate and the gap between the bonding area are less than or equal to the orthographic projection of the encapsulation layer on the substrate and the gap between the bonding area. That is, the end of the pressure-sensitive adhesive layer close to the bonding area covers the encapsulation layer completely. In the process of high-temperature and high-humidity experiment, when the polarizing layer in the polarizer shrinks along the absorption axis direction, the entire encapsulation layer is driven to shrink together through the pressure-sensitive adhesive layer, so that the encapsulation layer is prevented from being cracked due to partial shrinkage and partial non-shrinkage, the encapsulation layer is effectively protected, water vapor is prevented from entering due to encapsulation failure, black spots are prevented from being formed, and normal display of the display panel is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel, a display panel prefabricated part and a display device. BACKGROUND

[0002] Organic Light Emitting Display (OLED) and flat display devices based on Light Emitting Diode (LED) technology have been widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to their high image quality, power saving, thin body and wide application range, and have become the mainstream of display devices.

[0003] However, the process performance of the current display device needs to be improved. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a display panel which can avoid packaging failure and improve process performance.

[0005] To achieve the above purpose, the present application provides a display panel, which comprises:

[0006] a substrate, wherein the substrate comprises a display area and a bonding area located on one side of the display area;

[0007] an encapsulation layer, wherein the encapsulation layer is located on one side of the substrate and covers at least the display area;

[0008] a polarizer, wherein the polarizer is located on the side of the encapsulation layer away from the substrate and covers at least the display area;

[0009] the polarizer comprises a polarizing layer and a first pressure sensitive adhesive layer, the first pressure sensitive adhesive layer is located on the side of the encapsulation layer away from the substrate, and the polarizing layer is located on the side of the first pressure sensitive adhesive layer away from the substrate;

[0010] a first gap is provided between the normal projection of the encapsulation layer on the substrate and the bonding area, a second gap is provided between the normal projection of the first pressure sensitive adhesive layer on the substrate and the bonding area, and a third gap is provided between the normal projection of the polarizing layer on the substrate and the bonding area;

[0011] wherein the width of the second gap is less than or equal to the width of the first gap, and the width of the first gap is less than the width of the third gap.

[0012] In one embodiment, the first pressure sensitive adhesive layer comprises a first body portion and a first extension portion, the first extension portion is connected to one end of the first body portion close to the bonding area, and the first body portion is located between the polarizing layer and the encapsulation layer.

[0013] The first extension portion is located in the projection of the polarizing layer on the substrate.

[0014] Preferably, the substrate comprises a glass substrate.

[0015] In one embodiment, the polarizing sheet further comprises a second protective layer, the second protective layer is located between the first pressure sensitive adhesive layer and the polarizing layer.

[0016] In one embodiment, the polarizing sheet further comprises a second pressure sensitive adhesive layer and a compensation layer, the compensation layer is located on the side of the first pressure sensitive adhesive layer away from the substrate, and the second pressure sensitive adhesive layer is located between the compensation layer and the second protective layer.

[0017] In one embodiment, the first pressure sensitive adhesive layer further comprises a third extension portion, the third extension portion is connected to one end of the first pressure sensitive adhesive layer away from the bonding area.

[0018] In one embodiment, one side of the third extension portion is connected to the polarizing layer.

[0019] In one embodiment, the projection of the third extension portion on the substrate is located in the projection of the polarizing layer on the substrate.

[0020] Based on the same inventive concept, the present application further discloses a display device comprising the display panel.

[0021] Based on the same inventive concept, the present application further discloses a display panel preform comprising:

[0022] a substrate comprising a display area and a bonding area located on one side of the display area;

[0023] an encapsulation layer located on one side of the substrate and covering at least the display area;

[0024] a polarizing sheet located on the side of the encapsulation layer away from the substrate and covering at least the display area;

[0025] the polarizing sheet comprises a polarizing layer, a first pressure sensitive adhesive layer and a first protective layer, the first pressure sensitive adhesive layer is located on the side of the encapsulation layer away from the substrate, the polarizing layer is located on the side of the first pressure sensitive adhesive layer away from the substrate, and the first protective layer is located on the side of the polarizing layer away from the substrate;

[0026] The first gap is between the normal projection of the encapsulation layer on the substrate and the bonding area, the second gap is between the normal projection of the first pressure sensitive adhesive layer on the substrate and the bonding area, and the third gap is between the normal projection of the polarizing layer on the substrate and the bonding area;

[0027] The width of the second gap is less than or equal to the width of the first gap, and the width of the first gap is less than the width of the third gap.

[0028] In one embodiment, the first pressure sensitive adhesive layer includes a first body part and a first extension part, the first extension part is connected to one end of the first body part close to the bonding area, and the first body part is located between the polarizing layer and the encapsulation layer;

[0029] The normal projection of the first extension part on the substrate is located in the first gap.

[0030] Preferably, the first protective layer includes a second body part and a second extension part, the second extension part is connected to one end of the second body part close to the bonding area, the second body part is located on the side of the polarizing layer away from the substrate, and the second extension part is connected to the first extension part.

[0031] The normal projection of the second extension part on the substrate is located in the third gap.

[0032] Preferably, both sides of the first extension part have adhesion, and the side of the first extension part away from the substrate is bonded to the second extension part.

[0033] In one embodiment, the second extension part includes a bonding part and a connecting part, the bonding part is connected to the second body part through the connecting part, and the bonding part is bonded to the first extension part.

[0034] Preferably, the normal projection of the first extension part on the substrate is located in the normal projection of the bonding part on the substrate.

[0035] Preferably, the area of the normal projection of the bonding part on the substrate is greater than the area of the normal projection of the first extension part on the substrate.

[0036] In one embodiment, the normal projection of the polarizing layer on the substrate is located in the normal projection of the second body part on the substrate.

[0037] Preferably, the normal projection of the polarizing layer on the substrate completely overlaps the normal projection of the second body part on the substrate.

[0038] In one embodiment, a fourth gap is provided between the normal projection of the second extension on the substrate and the bonding area, and the width of the fourth gap is less than or equal to the width of the second gap.

[0039] Compared with the prior art, the display panel provided in the application has the following advantages. The normal projection of the pressure-sensitive adhesive layer on the substrate and the bonding area is less than or equal to the normal projection of the packaging layer on the substrate and the bonding area, that is, the end of the pressure-sensitive adhesive layer close to the bonding area covers the packaging layer completely. During the high-temperature and high-humidity experiment, when the polarizing layer in the polarizing sheet shrinks along the absorption axis direction, the entire packaging layer is driven to shrink together through the pressure-sensitive adhesive layer, avoiding the packaging layer from being cracked due to partial shrinkage and partial non-shrinkage, effectively protecting the packaging layer, avoiding water vapor from entering due to packaging failure, forming black spots, and ensuring normal display of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the application or related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0041] Figure 1 It is a schematic view of a related display panel;

[0042] Figure 2 It is a schematic view of a layer structure of a related display panel;

[0043] Figure 3 It is a schematic view of a display panel provided in an embodiment of the application;

[0044] Figure 4 It is a schematic view of a layer structure of a display panel provided in an embodiment of the application;

[0045] Figure 5 It is Figure 4 It is an enlarged schematic view of the structure at A in FIG. 8;

[0046] Figure 6 It is a schematic view of a display panel provided in another embodiment of the application;

[0047] Figure 7 It is a schematic view of a layer structure of a display panel provided in another embodiment of the application;

[0048] Figure 8 It is Figure 7 It is an enlarged schematic view of the structure at B in FIG. 10;

[0049] Figure 9 A schematic view of a layer structure of a display panel preform provided for another embodiment of the present application is shown in FIG. 1B.

[0050] Figure 10 A schematic view of a layer structure of a display panel preform provided for another embodiment of the present application is shown in FIG. 1B. Figure 9 A schematic view of a structure at C in FIG. 1A is shown in FIG. 1C.

[0051] Figure 11 A schematic view of a layer structure of a polarizer provided for another embodiment of the present application is shown in FIG. 2B.

[0052] Legend:

[0053] 100, display panel; 1, substrate; 11, display area; 12, bonding area; 2, encapsulation layer; 3, polarizer; 31, polarizing layer; 32, first pressure-sensitive adhesive layer; 321, first body portion; 322, first extension portion; 323, third extension portion; 33, first protective layer; 331, second body portion; 332, second extension portion; 333, adhesive portion; 334, connecting portion; 34, second protective layer; 35, second pressure-sensitive adhesive layer; 36, compensation layer; 200, display panel preform. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments and drawings.

[0055] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as their common meanings to those having ordinary skills in the art to which the present application belongs. The terms "first", "second" and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "comprise", "include" and similar terms mean that the components or objects before the terms encompass the components or objects listed after the terms and their equivalents, without excluding other components or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0056] Referring to FIG. 1A, a display panel 100 is shown, which includes a substrate 1, an encapsulation layer 2 and a polarizer 3. The encapsulation layer 2 is located on one side of the substrate 1 and covers a display area 11. The polarizer 3 is located on the side of the encapsulation layer 2 away from the substrate 1 and covers the display area 11. The substrate 1 includes the display area 11 and a bonding area 12 located on one side of the display area 11. The bonding area 12 is used for bonding with a flexible circuit board or a driving chip. Figures 1-2 The display panel 100 includes a substrate 1, an encapsulation layer 2 and a polarizer 3. The encapsulation layer 2 is located on one side of the substrate 1 and covers a display area 11. The polarizer 3 is located on the side of the encapsulation layer 2 away from the substrate 1 and covers the display area 11. The substrate 1 includes the display area 11 and a bonding area 12 located on one side of the display area 11. The bonding area 12 is used for bonding with a flexible circuit board or a driving chip.

[0057] Because polarizer 3 is not heat resistant, therefore, refer to Figure 2 The polarizer 3 is usually far from the bonding area 12. At the same time, in order to ensure the encapsulation effect, the encapsulation layer 2 will extend out of the display area 11, so that the boundary of the encapsulation layer 2 is outside the display area 11. This results in the end of the polarizer 3 near the bonding area 12 being recessed relative to the encapsulation layer 2. That is, the boundary of the end of the polarizer 3 near the bonding area 12 is located inside the encapsulation layer 2. Part of the encapsulation layer 2 is covered by the polarizer 3, and part of the encapsulation layer 2 is not covered by the polarizer 3.

[0058] Through long-term research, the inventors discovered that during high-temperature and high-humidity experiments, the polarizing layer in the polarizer 3 shrinks along the absorption axis, causing the entire polarizer 3 to shrink. At the same time, the portion of the encapsulation layer 2 covered by the polarizer 3 also shrinks along with it, while the portion of the encapsulation layer 2 not covered by the polarizer 3 does not shrink. This causes the interface between the covered and uncovered portions of the encapsulation layer 2 to crack, resulting in encapsulation failure, allowing moisture to enter and forming black spots.

[0059] Based on this, this application provides a display panel solution to solve the above-mentioned technical problems, as detailed in the following embodiments.

[0060] Reference Figures 3-5 As shown, one embodiment of this application discloses a display panel 100, which includes a substrate 1, an encapsulation layer 2 and a polarizer 3. The substrate 1 includes a display area 11 and a bonding area 12 located on one side of the display area 11. The encapsulation layer 2 is located on one side of the substrate 1 and at least covers the display area 11. The polarizer 3 is located on the side of the encapsulation layer 2 away from the substrate 1 and at least covers the display area 11.

[0061] The polarizer 3 includes a polarizing layer 31 and a first pressure-sensitive adhesive layer 32. The first pressure-sensitive adhesive layer 32 is located on the side of the encapsulation layer 2 away from the substrate 1, and the polarizing layer 31 is located on the side of the first pressure-sensitive adhesive layer 32 away from the substrate 1. A first gap is provided between the orthographic projection of the encapsulation layer 2 on the substrate 1 and the bonding area 12. A second gap is provided between the orthographic projection of the first pressure-sensitive adhesive layer 32 on the substrate 1 and the bonding area 12. A third gap is provided between the orthographic projection of the polarizing layer 31 on the substrate 1 and the bonding area 12. The width of the second gap is less than or equal to the width of the first gap, and the width of the first gap is less than the width of the third gap.

[0062] Specifically, refer to Figure 5As shown, the width of the first gap is d1, the width of the second gap is d2, and the width of the third gap is d3, which satisfies d3>d1≥d2. The width d3 of the third gap is relatively large, which can avoid the edge of the bonding polarizing layer 31 from being scalded, and even if the edge of the first pressure-sensitive adhesive layer 32 is scalded, since there is a certain distance from the edge of the polarizing layer 31, the appearance of the polarizing layer 31 will not be affected.

[0063] The display panel 100 provided in the present application extends the first pressure-sensitive adhesive layer 32 connected with the encapsulation layer 2 on the polarizing sheet 3 to the bonding area 12, so that the gap between the orthographic projection of the first pressure-sensitive adhesive layer 32 on the substrate 1 and the bonding area 12 is less than or equal to the gap between the orthographic projection of the encapsulation layer 2 on the substrate 1 and the bonding area 12, that is, the end of the first pressure-sensitive adhesive layer 32 close to the bonding area 12 covers the entire encapsulation layer 2. During the high-temperature and high-humidity experiment, when the polarizing layer 31 in the polarizing sheet 3 shrinks along the absorption axis direction, the entire encapsulation layer 2 will shrink together through the first pressure-sensitive adhesive layer 32, avoiding the encapsulation layer 2 from cracking due to partial shrinkage and partial non-shrinkage, effectively protecting the encapsulation layer 2, avoiding water vapor entering due to encapsulation failure, forming black spots, and ensuring the normal display of the display panel 100.

[0064] Optionally, the substrate 1 comprises a substrate and a driving device layer; the driving device layer is arranged on the substrate, and the driving device layer comprises a light sensing transistor and a pixel driving transistor for driving the light emitting unit to emit light.

[0065] Preferably, the substrate 1 comprises a glass substrate, which is used as the substrate and has the advantages of high strength and rigidity, and good thermal stability. In the related display panel, part of the encapsulation layer 2 is not covered by the polarizing sheet 3. During the high-temperature and high-humidity experiment, the polarizing sheet 3 drives part of the encapsulation layer 2 to shrink, while the glass substrate does not shrink, which will cause the interface between the covered part and the uncovered part of the encapsulation layer 2 to crack, resulting in encapsulation failure, water vapor entering, and black spots forming. In the present embodiment, when the polarizing layer 31 in the polarizing sheet 3 shrinks along the absorption axis direction, the entire encapsulation layer 2 will shrink together through the first pressure-sensitive adhesive layer 32, avoiding the encapsulation layer 2 from cracking due to partial shrinkage and partial non-shrinkage, effectively protecting the encapsulation layer 2, and avoiding water vapor entering due to encapsulation failure. In other embodiments, the substrate can also be a flexible substrate, such as PI (polyimide) and the like.

[0066] Reference Figures 6-8 As shown, in one embodiment, the first pressure-sensitive adhesive layer 32 comprises a first body part 321 and a first extension part 322, the first extension part 322 is connected with the end of the first body part 321 close to the bonding area 12, and the first body part 321 is located between the polarizing layer 31 and the encapsulation layer 2; wherein the orthographic projection of the first extension part 322 on the substrate 1 is located in the first gap.

[0067] The display panel 100 in the embodiment corresponds to the first pressure-sensitive adhesive layer 32 extending further to the bonding area 12 to form a first extension 322 on the basis of the above-mentioned embodiment, so that the first extension 322 can better wrap the one end of the encapsulation layer 2 close to the bonding area 12. During the high-temperature and high-humidity experiment, when the polarizing layer 31 shrinks along the absorption axis direction, the first pressure-sensitive adhesive layer 32 can better drive the entire encapsulation layer 2 to shrink together due to the existence of the first extension 322, so as to better protect the encapsulation layer 2 and avoid encapsulation failure.

[0068] Referring to Figure 11 As shown in the figure, in one of the embodiments, the polarizing sheet 3 further comprises a second protective layer 34, which is located between the first pressure-sensitive adhesive layer 32 and the polarizing layer 31. The first protective layer 33 and the second protective layer 34 support and protect the polarizing layer 31 from both sides of the polarizing layer 31, respectively.

[0069] Further, the polarizing sheet 3 further comprises a second pressure-sensitive adhesive layer 35 and a compensation layer 36. The compensation layer 36 is located on the side of the first pressure-sensitive adhesive layer 32 away from the substrate 1, and the second pressure-sensitive adhesive layer 35 is located between the compensation layer 36 and the second protective layer 34. The second pressure-sensitive adhesive layer 35 is used to bond the compensation layer 36 and the second protective layer 34, and the compensation layer 36 is used to compensate for the phase difference of the liquid crystal material inside the liquid crystal display.

[0070] Please continue to refer to Figure 11 As shown in the figure, in one of the embodiments, the first pressure-sensitive adhesive layer 32 further comprises a third extension 323, which is connected to the end of the first pressure-sensitive adhesive layer 32 away from the bonding area 12. The first pressure-sensitive adhesive layer 32 extends away from the bonding area 12 to better wrap the encapsulation layer 2. During the high-temperature and high-humidity experiment, when the polarizing layer 31 shrinks along the absorption axis direction, the first pressure-sensitive adhesive layer 32 can better drive the entire encapsulation layer 2 to shrink.

[0071] Further, one side of the third extension 323 is connected to the polarizing layer 31. Specifically, the side of the third extension 323 away from the substrate 1 is bonded to the polarizing layer 31, and the polarizing layer 31 supports the third extension 323 to avoid the third extension 323 being bonded to the encapsulation layer 2.

[0072] Further, the orthographic projection of the third extension 323 on the substrate 1 is located within the orthographic projection of the polarizing layer 31 on the substrate 1, that is, the side of the third extension 323 away from the substrate 1 is entirely covered by the polarizing layer 31, so as to ensure the supporting effect of the polarizing layer 31 on the third extension 323.

[0073] Optionally, the polarizing layer 31 is PVA (polyvinyl alcohol) or the like, and the first protective layer 33, the second protective layer 34, and the compensation layer 36 are TAC (triacetyl cellulose) or the like.

[0074] Another embodiment of the present application discloses a display device, which comprises the display panel 100 in the above-mentioned embodiments. The display device can be a smart device (such as a mobile phone, a VR device, a computer, a television, a vehicle-mounted display, etc.).

[0075] The display device provided by the embodiment can effectively protect the encapsulation layer 2 and avoid encapsulation failure to cause water vapor to enter and form black spots, thereby ensuring normal display of the display panel 100.

[0076] Referring to Figures 9-10 Another embodiment of the present application discloses a display panel preform, which comprises a substrate 1, an encapsulation layer 2 and a polarizing sheet 3. The substrate 1 comprises a display area 11 and a bonding area 12 located on one side of the display area 11. The encapsulation layer 2 is located on one side of the substrate 1 and covers at least the display area 11. The polarizing sheet 3 is located on the side of the encapsulation layer 2 away from the substrate 1 and covers at least the display area 11.

[0077] The polarizing sheet 3 comprises a polarizing layer 31, a first pressure-sensitive adhesive layer 32 and a first protective layer 33. The first pressure-sensitive adhesive layer 32 is located on the side of the encapsulation layer 2 away from the substrate 1. The polarizing layer 31 is located on the side of the first pressure-sensitive adhesive layer 32 away from the substrate 1. The normal projection of the encapsulation layer 2 on the substrate 1 is provided with a first gap between the bonding area 12. The normal projection of the first pressure-sensitive adhesive layer 32 on the substrate 1 is provided with a second gap between the bonding area 12. The normal projection of the polarizing layer 31 on the substrate 1 is provided with a third gap between the bonding area 12. The width of the second gap is less than or equal to the width of the first gap, and the width of the first gap is less than the width of the third gap. The first protective layer 33 is used to provide protection before the polarizing sheet 3 is attached to the cover plate. The first protective layer 33 can be removed when the polarizing sheet 3 needs to be attached to the cover plate.

[0078] In one embodiment, the first protective layer 33 comprises a second body part 331 and a second extension part 332. The second extension part 332 is connected to the end of the second body part 331 close to the bonding area 12. The second body part 331 is located on the side of the polarizing layer 31 away from the substrate 1. The second extension part 332 is connected to the first extension part 322. The normal projection of the second extension part 332 on the substrate 1 is located in the third gap.

[0079] In this embodiment, the display panel preform 200 extends the first protective layer 33 towards the bonding region 12 and connects the extended portion of the first protective layer 33 with the extended portion of the first pressure-sensitive adhesive layer 32. This effectively covers the end of the polarizing layer 31 near the bonding region 12, further preventing the edge of the polarizing layer 31 from being burned during bonding. Simultaneously, since the first extension 322 lacks support on both sides, connecting the second extension 332 to the first extension 322 provides support for the first extension 322, increasing its rigidity and preventing it from adhering to the encapsulation layer 2 or the polarizer 3.

[0080] In one embodiment, both sides of the first extension 322 are adhesive. The side of the first extension 322 away from the substrate 1 is bonded to the second extension 332. Specifically, the first pressure-sensitive adhesive layer 32 is a pressure-sensitive adhesive with adhesive on both sides. Therefore, both sides of the first extension 322 are also adhesive. The first protective layer 33 can be directly bonded to the side of the first extension 322 away from the substrate 1, while the side of the first extension 322 close to the substrate 1 can be suspended. When the polarizing layer 31 shrinks along the absorption axis, the first extension 322 and the second extension 332 shrink together, thereby causing the encapsulation layer 2 to shrink as a whole.

[0081] Please continue to refer to Figure 10 As shown, in one embodiment, the second extension 332 includes an adhesive portion 333 and a connecting portion 334. The adhesive portion 333 is connected to the second body portion 331 via the connecting portion 334, and is also bonded to the first extension 322. The connecting portion 334 connects the adhesive portion 333 to the second body portion 331 and provides support for the adhesive portion 333, thereby supporting the first extension 322. When the polarizing layer 31 contracts along the absorption axis, the second body portion 331, through the connecting portion 334, causes the adhesive portion 333 to contract. Simultaneously, the first body portion 321 causes the first extension 322 to contract, and the first extension 322 and the adhesive portion 333 contract as a whole.

[0082] In one embodiment, the orthographic projection of the first extension 322 on the substrate 1 is located within the orthographic projection of the adhesive portion 333 on the substrate 1, ensuring that the side of the first extension 322 away from the substrate 1 is bonded to the adhesive portion 333, thus ensuring the bonding area and bonding effect, facilitating better support for the first extension 322, and preventing the second extension 332 from bonding to the encapsulation layer 2 or the polarizer 3.

[0083] Furthermore, the area of ​​the orthographic projection of the adhesive portion 333 on the substrate 1 is larger than the area of ​​the orthographic projection of the first extension portion 322 on the substrate 1. That is, the adhesive portion 333 is not only bonded to the side of the first extension portion 322 away from the substrate 1, but also bonded to the side of the first body portion 321 away from the substrate 1. This can further enhance the support effect on the first extension portion 322. At the same time, when the polarizing layer 31 shrinks along the absorption axis, it can better drive the encapsulation layer 2 to shrink together.

[0084] In one embodiment, the orthographic projection of the polarizing layer 31 on the substrate 1 lies within the orthographic projection of the second body portion 331 on the substrate 1, ensuring that the first protective layer 33 completely covers the polarizing layer 31 and guarantees the protective effect on the polarizing layer 31. Furthermore, the orthographic projection of the polarizing layer 31 on the substrate 1 completely overlaps with the orthographic projection of the second body portion 331 on the substrate 1, thereby achieving effective protection for the polarizing layer 31.

[0085] Please continue to refer to Figure 10 As shown, in one embodiment, a fourth gap is provided between the orthographic projection of the second extension 332 on the substrate 1 and the bonding region 12, and the width of the fourth gap is less than or equal to the width of the second gap. Specifically, the width of the fourth gap is d4, which satisfies d4≥d2. That is, the second extension 332 extends relative to the first extension 322 toward the bonding region 12 to further enhance the support effect on the first extension 322.

[0086] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0087] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0088] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: A substrate, the substrate including a display area and a bonding area located on one side of the display area; An encapsulation layer, the encapsulation layer being located on one side of the substrate and at least covering the display area; A polarizer, the polarizer being located on the side of the encapsulation layer away from the substrate and at least covering the display area; The polarizer includes a polarizing layer and a first pressure-sensitive adhesive layer, wherein the first pressure-sensitive adhesive layer is located on the side of the encapsulation layer away from the substrate, and the polarizing layer is located on the side of the first pressure-sensitive adhesive layer away from the substrate. The encapsulation layer has a first gap between its orthographic projection on the substrate and the bonding area, the first pressure-sensitive adhesive layer has a second gap between its orthographic projection on the substrate and the bonding area, and the polarizing layer has a third gap between its orthographic projection on the substrate and the bonding area. The width of the second gap is less than or equal to the width of the first gap, and the width of the first gap is less than the width of the third gap.

2. The display panel as described in claim 1, characterized in that, The first pressure-sensitive adhesive layer includes a first body portion and a first extension portion, the first extension portion being connected to one end of the first body portion near the bonding area, and the first body portion being located between the polarizing layer and the encapsulation layer; Wherein, the orthographic projection of the first extension on the substrate is located in the first gap; And / or, the substrate includes a glass substrate.

3. The display panel as described in claim 1, characterized in that, The polarizer also includes a second protective layer, which is located between the first pressure-sensitive adhesive layer and the polarizing layer.

4. The display panel as described in claim 3, characterized in that, The polarizer further includes a second pressure-sensitive adhesive layer and a compensation layer. The compensation layer is located on the side of the first pressure-sensitive adhesive layer away from the substrate, and the second pressure-sensitive adhesive layer is located between the compensation layer and the second protective layer.

5. The display panel as described in claim 1, characterized in that, The first pressure-sensitive adhesive layer further includes a third extension, which is connected to one end of the first pressure-sensitive adhesive layer away from the bonding area.

6. The display panel as described in claim 5, characterized in that, One side of the third extension is connected to the polarizing layer.

7. The display panel as described in claim 5, characterized in that, The orthographic projection of the third extension on the substrate lies within the orthographic projection of the polarizing layer on the substrate.

8. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-7.

9. A display panel prefabricated component, characterized in that, include: A substrate, the substrate including a display area and a bonding area located on one side of the display area; An encapsulation layer, the encapsulation layer being located on one side of the substrate and at least covering the display area; A polarizer, the polarizer being located on the side of the encapsulation layer away from the substrate and at least covering the display area; The polarizer includes a polarizing layer, a first pressure-sensitive adhesive layer, and a first protective layer. The first pressure-sensitive adhesive layer is located on the side of the encapsulation layer away from the substrate, the polarizing layer is located on the side of the first pressure-sensitive adhesive layer away from the substrate, and the first protective layer is located on the side of the polarizing layer away from the substrate. The encapsulation layer has a first gap between its orthographic projection on the substrate and the bonding area, the first pressure-sensitive adhesive layer has a second gap between its orthographic projection on the substrate and the bonding area, and the polarizing layer has a third gap between its orthographic projection on the substrate and the bonding area. The width of the second gap is less than or equal to the width of the first gap, and the width of the first gap is less than the width of the third gap.

10. The display panel preform as described in claim 9, characterized in that, The first pressure-sensitive adhesive layer includes a first body portion and a first extension portion, the first extension portion being connected to one end of the first body portion near the bonding area, and the first body portion being located between the polarizing layer and the encapsulation layer; Wherein, the orthographic projection of the first extension on the substrate is located in the first gap.

11. The display panel preform as described in claim 10, characterized in that, The first protective layer includes a second body portion and a second extension portion. The second extension portion is connected to one end of the second body portion near the bonding area. The second body portion is located on the side of the polarizing layer away from the substrate. The second extension portion is connected to the first extension portion. The orthographic projection of the second extension on the substrate is located in the third gap.

12. The display panel preform as described in claim 11, characterized in that, Both sides of the first extension are adhesive, and the side of the first extension away from the substrate is bonded to the second extension.

13. The display panel preform as described in claim 11, characterized in that, The second extension includes an adhesive portion and a connecting portion. The adhesive portion is connected to the second body portion through the connecting portion, and the adhesive portion is bonded to the first extension.

14. The display panel preform as described in claim 13, characterized in that, The orthographic projection of the first extension on the substrate lies within the orthographic projection of the adhesive portion on the substrate.

15. The display panel preform as described in claim 13, characterized in that, The area of ​​the adhesive portion projected onto the substrate is larger than the area of ​​the first extension portion projected onto the substrate.

16. The display panel preform as claimed in claim 11, characterized in that, The orthogonal projection of the polarizing layer on the substrate is located within the orthogonal projection of the second body portion on the substrate.

17. The display panel preform as claimed in claim 16, characterized in that, The orthographic projection of the polarizing layer on the substrate completely overlaps with the orthographic projection of the second body portion on the substrate.

18. The display panel preform as claimed in claim 11, characterized in that, A fourth gap is provided between the orthographic projection of the second extension on the substrate and the bonding area, the width of the fourth gap being less than or equal to the width of the second gap.

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