Display panel, preparation method thereof and electronic equipment

Abstract

The invention discloses a display panel, a preparation method thereof and electronic equipment. The display panel comprises a screen body, a bonding layer, a cover plate and a side edge adhesive layer, wherein the bonding layer is located on one side of the light-emitting face of the screen body, and the outer edge of the bonding layer shrinks inwards relative to the outer edge of the screen body; the cover plate is located on the side, away from the screen body, of the bonding layer, and the outer edge of the bonding layer shrinks inwards relative to the outer edge of the cover plate; the side edge glue layer is at least partially filled between the cover plate and the screen body, at least part of the side edge glue layer and the bonding layer are arranged on the same layer, and the side edge glue layer is used for shading. According to the display panel, the outer edge of the bonding layer shrinks inwards relative to the outer edge of the screen body, meanwhile, the side edge glue layer is at least partially filled between the cover plate and the screen body, light shielding is conducted through the side edge glue layer, and therefore printing ink is omitted, and an ultra-narrow frame of the display panel can be achieved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a preparation method thereof and an electronic device. Background Art

[0002] In the display panel of the prior art, ink is usually used to cover the non-display area of ​​the screen body, resulting in a larger frame of the display panel.

[0003] Therefore, as the application scope of display panels becomes wider and wider, it is urgent to narrow the border of the display panel to meet the user's pursuit of narrow border. Summary of the invention

[0004] The present application mainly provides a display panel and a manufacturing method thereof and an electronic device, which can realize a narrow frame of the display panel.

[0005] In order to solve the above technical problems, the technical solution adopted in the present application is: to provide a display panel, comprising: a screen body; an adhesive layer, located on the light-emitting side of the screen body, wherein the outer edge of the adhesive layer is retracted relative to the outer edge of the screen body; a cover plate, located on the side of the adhesive layer away from the screen body, wherein the outer edge of the adhesive layer is retracted relative to the outer edge of the cover plate; a side adhesive layer, at least partially filled between the cover plate and the screen body and at least part of the side adhesive layer is arranged on the same layer as the adhesive layer, and the side adhesive layer is used for shading.

[0006] Wherein, the orthographic projections of the adhesive layer and the side adhesive layer on the cover plate cover the cover plate;

[0007] Preferably, a surface of the side adhesive layer facing away from the bonding layer is flush with a side wall of the cover plate.

[0008] Wherein, the outer edge of the screen body is retracted relative to the outer edge of the cover plate, and the side glue layer further extends to the side wall of the screen body.

[0009] Wherein, the material of the side adhesive layer includes black adhesive;

[0010] Preferably, the material of the bonding layer includes at least one of optical adhesive OCA and liquid optically transparent adhesive OCR.

[0011] The screen body comprises a display area and a non-display area arranged outside the display area, and the orthographic projection of the adhesive layer on the screen body at least covers the display area of ​​the screen body.

[0012] The non-display area includes a connection sub-area and a wiring sub-area, the connection sub-area is located between the display area and the wiring sub-area, the orthographic projection of the adhesive layer on the screen body extends from the display area of ​​the screen body to the connection sub-area, and the orthographic projection of the side adhesive layer on the screen body covers the wiring sub-area;

[0013] Preferably, the adhesive layer includes a main body and an extension portion, the orthographic projection of the main body on the screen body covers the display area of ​​the screen body, and the orthographic projection of the extension portion on the screen body is located in the connecting sub-area, wherein the width of the extension portion is greater than 0.15 mm.

[0014] Wherein, the cover plate is a transparent cover plate.

[0015] In order to solve the above technical problems, another technical solution adopted by the present application is: to provide an electronic device, comprising: a middle frame, provided with a accommodating space: a display panel as described in any one of the above items, wherein the display panel is arranged in the accommodating space.

[0016] Wherein, the electronic device further comprises: a middle frame adhesive, which is arranged on the non-light-emitting surface of the screen body and bonds the screen body and the middle frame;

[0017] Preferably, the middle frame adhesive is a double-sided adhesive;

[0018] Preferably, the side adhesive layer is bonded to the middle frame.

[0019] In order to solve the above-mentioned technical problems, another technical solution adopted in the present application is: providing a method for preparing a display panel, the method comprising: setting an adhesive layer on one side of the light-emitting surface of the screen body; bonding the cover plate to the screen body through the adhesive layer, wherein the outer edge of the adhesive layer is retracted relative to the outer edge of the screen body and the outer edge of the cover plate; filling a side adhesive layer for shading at least between the cover plate and the screen body, wherein at least a part of the side adhesive layer is set on the same layer as the adhesive layer.

[0020] The beneficial effects of the present application are as follows: the outer edge of the adhesive layer is set inward relative to the outer edge of the screen body, and a side adhesive layer is set to at least partially fill the space between the cover plate and the screen body, and the side adhesive layer is used for light shielding, thereby eliminating ink and achieving an extremely narrow frame of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 It is a structural schematic diagram of an implementation scheme of a display panel in the prior art;

[0023] Figure 2 This is a schematic structural diagram of an embodiment of a display panel in the present application;

[0024] Figure 3 This is a schematic diagram of the structure of an electronic device in this application;

[0025] Figure 4 A schematic diagram of a process of an embodiment of a method for preparing a display panel in the present application;

[0026] Explanation of reference numerals: 1 screen body; 11 display area; 12 non-display area; 13 connection sub-area; 14 wiring sub-area; 2 adhesive layer; 21 main body; 22 extension part; 3 cover plate; 4 side glue layer; 5 ink; 6 middle frame glue; 7 middle frame. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] See also Figure 1 In the prior art, ink 5 is used in the display panel to cover the frame of the screen body 1. On the one hand, ink 5 can cover the wiring in the frame, and on the other hand, ink 5 can also prevent light from leaking from the edge of the cover plate 3, causing light leakage. However, since the ink 5 has a certain height and considering the influence of the fitting accuracy and material accuracy, the length difference between the cover plate 3 and the screen body 1 is usually set to be larger, and a step needs to be designed in the middle frame 7 to support the ink 5, so that the frame of the display panel is larger. In addition, since the ink 5 is prepared on the cover plate 3 in advance, and then the cover plate 3 is combined with the adhesive layer 2, at this time, since there is an overlapping area between the ink 5 and the adhesive layer 2, and the ink 5 has a certain height, bubbles will be generated in the area where the adhesive layer 2 and the ink 5 are placed.

[0033] See also Figure 2 The present application provides a display panel, which includes a screen body 1, an adhesive layer 2, a cover plate 3 and a side adhesive layer 4; wherein the adhesive layer 2 is located on the light emitting surface side of the screen body 1, wherein the outer edge of the adhesive layer 2 is retracted relative to the outer edge of the screen body 1; the cover plate 3 is located on the side of the adhesive layer 2 away from the screen body 1, wherein the outer edge of the adhesive layer 2 is retracted relative to the outer edge of the cover plate 3; the side adhesive layer 4 is at least partially filled between the cover plate 3 and the screen body 1 and at least part of the side adhesive layer 4 is arranged on the same layer as the adhesive layer 2, and the side adhesive layer 4 is used for shading.

[0034] Specifically, the screen body 1 is the core part of the display panel, which emits light and enables the display panel to display images. The screen body 1 is provided with a light-emitting surface and a non-light-emitting surface arranged opposite to each other. The light in the screen body 1 is emitted from the light-emitting surface. At the same time, the screen body 1 has a display area 11 and a non-display area 12. The display area 11 is used to display the image and is usually provided with structures such as light-emitting pixels and a driving circuit. The non-display area 12 cannot display the image and is usually provided with structures such as peripheral wiring. The adhesive layer 2 is located on the light-emitting surface side of the screen body 1, and the adhesive layer 2 plays the role of bonding the screen body 1 and the cover plate 3. The outer edge of the adhesive layer 2 is retracted relative to the outer edge of the screen body 1, that is, the positive projection of the adhesive layer 2 on the screen body 1 cannot cover the screen body 1. At the same time, the cover plate 3 is located on the side of the adhesive layer 2 away from the screen body 1. The cover plate 3 is bonded to the screen body 1 through the adhesive layer 2. The cover plate 3 plays the role of protecting the screen body 1 and decorating the appearance of the display panel. The outer edge of the adhesive layer 2 is retracted relative to the outer edge of the cover plate 3 , that is, the orthographic projection of the adhesive layer 2 on the cover plate 3 cannot cover the entire cover plate 3 .

[0035] At the same time, the side adhesive layer 4 is at least partially filled between the cover plate 3 and the screen body 1, and is bonded to the screen body 1 and the cover plate 3. At this time, the side adhesive layer 4 can cover at least part of the non-display area 12 of the screen body 1. At the same time, the side adhesive layer 4 is used for shading, thereby shielding the edge of the screen body 1.

[0036] In one embodiment, the side glue layer 4 is only filled between the cover plate 3 and the screen body 1, and the side glue layer 4 and the adhesive layer 2 are designed in the same layer. Figure 2 As shown, the outer edge of the screen body 1 is retracted relative to the outer edge of the cover plate 3, and the side adhesive layer 4 is further extended from between the cover plate 3 and the screen body 1 to the side wall of the screen body 1. At this time, the side adhesive layer 4 is designed around the adhesive layer 2 and the screen body 1, thereby increasing the bonding area of ​​the side adhesive layer 4 and improving the structural stability of the display panel.

[0037] From the above content, it can be seen that in the display panel of the present application, a side glue layer 4 is filled between the cover plate 3 and the screen body 1, and the side glue layer 4 replaces the ink 5 for light shielding, so there is no need to set ink on the cover plate 3, and the ink 5 distance reserved in the non-display area 12 due to the ink 5 step difference (height difference), fitting tolerance, and material tolerance can be released, thereby reducing the frame. At the same time, due to the elimination of the design of ink 5, the poor fitting bubbles caused by the height difference of ink 5 can also be reduced, thereby improving the yield of the display panel.

[0038] Please continue reading Figure 2 The orthographic projections of the adhesive layer 2 and the side adhesive layer 4 on the cover plate 3 cover the cover plate 3. At this time, the side adhesive layer 4 and the adhesive layer 2 can stably support the cover plate 3, ensure the bonding area of ​​the adhesive layer 2, and improve the stability of the display panel.

[0039] In one embodiment, the orthographic projections of the adhesive layer 2 and the side adhesive layer 4 on the cover plate 3 overlap with the cover plate 3. At this time, the surface of the side adhesive layer 4 facing away from the adhesive layer 2 is flush with the side wall of the cover plate 3. The side adhesive layer 4 can support the cover plate 3, which has a good effect of maintaining structural stability. In another embodiment, the orthographic projections of the adhesive layer 2 and the side adhesive layer 4 on the cover plate 3 exceed the area of ​​the cover plate 3, that is, the side adhesive layer 4 protrudes from the cover plate 3. At this time, the side adhesive layer 4 can be bonded to the middle frame 7 when preparing the electronic device, thereby improving the structural stability of the electronic device.

[0040] Please continue reading Figure 2 , the outer edge of the screen body 1 is retracted relative to the outer edge of the cover plate 3, and the side glue layer 4 further extends to the side wall of the screen body 1. Specifically, the outer edge of the screen body 1 is retracted relative to the outer edge of the cover plate 3, so that there is a length difference between the outer edge of the screen body 1 and the outer edge of the cover plate 3.

[0041] In one embodiment, the material of the side adhesive layer 4 includes black glue, which has the advantages of being widely used and easy to prepare. Therefore, setting the material of the side adhesive layer 4 to include black glue can reduce the preparation cost and difficulty. The material of the black glue is made of any transparent colloid with viscosity. The light transmittance of the side adhesive layer 4 is changed by adding black dye to the transparent colloid to meet the light shielding effect of the side adhesive layer 4 in the present application. Alternatively, the black glue can be a colloid made of black or gray materials, which can also make the side adhesive layer 4 have a light shielding effect.

[0042] In one embodiment, the material of the bonding layer 2 includes at least one of optical adhesive OCA and liquid optical transparent adhesive OCR. Optical adhesive OCA and liquid optical transparent adhesive OCR have good bonding strength and are currently widely used. The materials are mature and convenient for large-scale use. Of course, the bonding layer 2 in the present application can also use other adhesive materials with better bonding effects.

[0043] Please continue reading Figure 2 The screen body 1 includes a display area 11 and a non-display area 12 arranged outside the display area 11 , and the orthographic projection of the adhesive layer 2 on the screen body 1 at least covers the display area 11 of the screen body 1 .

[0044] Specifically, the orthographic projection of the adhesive layer 2 on the screen body 1 is set to at least cover the display area 11 to ensure the bonding firmness between the screen body 1 and the cover plate 3. In one embodiment, the orthographic projection of the adhesive layer 2 on the screen body 1 only covers the display area 11. In another embodiment, the orthographic projection of the adhesive layer 2 on the screen body 1 can cover the area outside the display area 11 of the screen body 1 in addition to covering the display area 11.

[0045] Please continue reading Figure 2The non-display area 12 includes a connecting sub-area 13 and a wiring sub-area 14, wherein the connecting sub-area 13 is located between the display area 11 and the wiring sub-area 14, wherein the orthographic projection of the adhesive layer 2 on the screen body 1 extends from the display area 11 of the screen body 1 to the connecting sub-area 13, and the orthographic projection of the side adhesive layer 4 on the screen body 1 covers the wiring sub-area 14.

[0046] Specifically, various peripheral circuits are formed in the wiring sub-area 14, and the purpose of the side adhesive layer 4 is to cover the various peripheral circuits in the wiring sub-area 14. At the same time, the connecting sub-area 13 connects the display area 11 and the wiring sub-area 14. The orthographic projection of the adhesive layer 2 on the screen body 1 is extended from the display area 11 of the screen body 1 to the connecting sub-area 13. On the one hand, the strength of the bonding between the cover plate 3 and the screen body 1 through the adhesive layer 2 can be ensured, and on the other hand, the precision requirement for placing the adhesive layer 2 during the preparation process can be reduced.

[0047] In one application scenario, the orthographic projection of the adhesive layer 2 on the screen body 1 covers the display area 11 and part of the connection sub-area 13 of the screen body 1. At this time, the orthographic projection of the side adhesive layer 4 on the screen body 1 covers all the wiring sub-areas 14 of the screen body 1 and the remaining part of the connection sub-areas 13, and then the side adhesive layer 4 can effectively shield the wiring sub-areas 14. In another embodiment, the orthographic projection of the adhesive layer 2 on the screen body 1 covers the display area 11 and all the connection sub-areas 13 of the screen body 1. At this time, the orthographic projection of the side adhesive layer 4 on the screen body 1 covers all the wiring sub-areas 14 of the screen body 1, and at this time, the side adhesive layer 4 can still effectively shield the wiring sub-areas 14.

[0048] That is to say, in the above configuration, the orthographic projection of the side adhesive layer 4 on the screen body 1 covers all the wiring sub-areas 14 of the screen body 1 , thereby achieving effective shielding of the wiring sub-areas 14 .

[0049] In one embodiment, continue to refer to Figure 2 The bonding layer 2 includes a main body portion 21 and an extension portion 22, wherein the orthographic projection of the main body portion 21 on the screen body 1 covers the display area 11 of the screen body 1, and the orthographic projection of the extension portion 22 on the screen body 1 is located in the connecting sub-area 13, wherein the width of the extension portion 22 is greater than 0.15 mm.

[0050] Specifically, 0.15 mm can ensure that the display area 11 of the screen body 1 can be completely covered during the preparation of the adhesive layer 2, and this size is the fitting tolerance of the adhesive layer 2. At the same time, the width of the extension portion 22 is less than or equal to the width of the connection sub-area 13 of the screen body 1. This design can ensure that the side adhesive layer 4 fully covers the wiring sub-area 14, ensure that the orthographic projection of the side adhesive layer 4 on the screen body 1 covers all the wiring sub-areas 14 of the screen body 1, and ensure that the side adhesive layer 4 effectively blocks the wiring sub-areas 14.

[0051] In one embodiment, the cover plate 3 is a transparent cover plate 3. In the prior art, the cover plate 3 is already printed with ink 5 when it is received, forming a partially opaque cover plate 3. In the present application, the side adhesive layer 4 is used, and the cover plate 3 does not need to be printed with ink 5. The transparent cover plate 3 can be attached to the side of the adhesive layer away from the screen body 1. The process is simple and the yield rate of the display panel is improved.

[0052] See also Figure 3 The present application also provides an electronic device, which includes the display panel and the middle frame 7 described in the above embodiment, the middle frame 7 is provided with a receiving space, and the display panel is arranged in the receiving space. Specifically, the display panel is arranged in the receiving space of the middle frame 7, and the middle frame 7 in the electronic device can protect the display panel. Of course, other structures can also be used in the electronic device to replace the middle frame 7 to protect the display panel.

[0053] Please continue reading Figure 3 The electronic device further includes a middle frame glue 6, which is arranged on the non-light-emitting surface of the screen body 1 and bonds the screen body 1 and the middle frame 7. Specifically, the middle frame glue 6 bonds the screen body 1 and the middle frame 7 to achieve structural fixation of the electronic device. Of course, in other embodiments, the screen body 1 and the middle frame 7 may also be connected by other structures instead of being bonded by glue, such as a locking mechanism, a positioning mechanism, a snap-on mechanism, etc.

[0054] In one embodiment, the middle frame glue 6 is a double-sided glue, so that one side of the middle frame glue 6 is bonded to the screen body 1, and the other side is bonded to the middle frame 7, thereby achieving the function of bonding the screen body 1 and the middle frame 7. The use of double-sided glue has the advantages of simple process and easy preparation.

[0055] In one embodiment, the side adhesive layer 4 can also be bonded to the middle frame 7. Since the side adhesive layer 4 is sticky, when the adhesive layer 2 and the orthographic projection of the side adhesive layer 4 on the cover plate 3 cover the cover plate 3, the outer edge of the side adhesive layer 4 is flush with the outer edge of the cover plate 3, or the outer edge of the side adhesive layer 4 protrudes from the outer edge of the cover plate 3, the contact between the side adhesive layer 4 and the middle frame 7 can be achieved. When the side adhesive layer 4 is sticky, the side adhesive layer 4 and the middle frame 7 are bonded, which can improve the overall structural stability of the electronic device.

[0056] Furthermore, the electronic device in the embodiment of the present invention may be any product or component with a touch function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame or a navigator.

[0057] See also Figure 4 The present application also provides a method for preparing a display panel, the method is used to prepare the display panel in the above embodiment, combined with Figure 2 and Figure 3 , the preparation method comprises:

[0058] S10: a bonding layer 2 is provided on the light emitting surface side of the screen body 1 .

[0059] An adhesive layer 2 is disposed on one side of the light emitting surface of the screen body 1 . In one application scenario, the adhesive layer 2 covers the display area 11 of the screen body 1 to ensure the adhesive strength between the screen body 1 and the cover plate 3 .

[0060] S20: Bonding the cover plate 3 to the screen body 1 via the adhesive layer 2 , wherein the outer edge of the adhesive layer 2 is retracted relative to the outer edge of the screen body 1 and the outer edge of the cover plate 3 .

[0061] The cover plate 3 is placed on the side of the adhesive layer 2 facing away from the screen body 1, and the cover plate 3 is bonded to the screen body 1 through the adhesive layer 2. The outer edge of the adhesive layer 2 is retracted relative to the outer edge of the screen body 1 and the outer edge of the cover plate 3.

[0062] S30: Filling a side adhesive layer 4 for shading at least between the cover plate 3 and the screen body 1 .

[0063] At least part of the side adhesive layer 4 is arranged in the same layer as the adhesive layer 2. Since the outer edge of the adhesive layer 2 is inwardly contracted relative to the outer edges of the cover plate 3 and the screen body 1, the side adhesive layer 4 can be filled between the cover plate 3 and the screen body 1. The side adhesive layer 4 can be prepared by a dispensing process.

[0064] In one embodiment, the side adhesive layer 4 is only located between the cover plate 3 and the screen body 1, and is arranged in the same layer as the adhesive layer 2. In one embodiment, the side adhesive layer 4 is arranged around the screen body 1 and the adhesive layer 2, increasing the bonding area of ​​the side adhesive layer 4 and improving the overall structural stability of the display panel.

[0065] After the display panel is prepared, the display panel is fixed in the middle frame by the middle frame glue 6, thereby obtaining an electronic device.

[0066] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: include: Screen body; An adhesive layer is located on the light emitting surface side of the screen body, wherein the outer edge of the adhesive layer is retracted relative to the outer edge of the screen body; A cover plate is located on a side of the adhesive layer away from the screen body, wherein an outer edge of the adhesive layer is retracted relative to an outer edge of the cover plate; The side adhesive layer at least partially fills the space between the cover plate and the screen body, and at least a part of the side adhesive layer is arranged in the same layer as the bonding layer, and the side adhesive layer is used for light shielding.

2. The display panel according to claim 1, characterized in that: The orthographic projections of the adhesive layer and the side adhesive layer on the cover plate cover the cover plate; Preferably, a surface of the side adhesive layer facing away from the bonding layer is flush with a side wall of the cover plate.

3. The display panel according to claim 1, characterized in that: The outer edge of the screen body is retracted relative to the outer edge of the cover plate, and the side glue layer further extends to the side wall of the screen body.

4. The display panel according to claim 1, characterized in that: The material of the side adhesive layer includes black adhesive; Preferably, the material of the bonding layer includes at least one of optical adhesive OCA and liquid optically transparent adhesive OCR.

5. The display panel according to claim 1, characterized in that: The screen body comprises a display area and a non-display area arranged outside the display area, and the orthographic projection of the adhesive layer on the screen body at least covers the display area of ​​the screen body.

6. The display panel according to claim 5, characterized in that: The non-display area includes a connection sub-area and a wiring sub-area, wherein the connection sub-area is located between the display area and the wiring sub-area, wherein the orthographic projection of the adhesive layer on the screen body extends from the display area of ​​the screen body to the connection sub-area, and the orthographic projection of the side adhesive layer on the screen body covers the wiring sub-area; Preferably, the adhesive layer includes a main body and an extension portion, the orthographic projection of the main body on the screen body covers the display area of ​​the screen body, and the orthographic projection of the extension portion on the screen body is located in the connecting sub-area, wherein the width of the extension portion is greater than 0.15 mm.

7. The display panel according to claim 1, characterized in that: The cover plate is a transparent cover plate.

8. An electronic device, characterized in that: The electronic device comprises: Middle frame, with space for: The display panel according to any one of claims 1 to 7, wherein the display panel is arranged in the accommodating space.

9. The electronic device according to claim 8, characterized in that: The electronic device further comprises: Middle frame glue, arranged on the non-light-emitting surface of the screen body, to bond the screen body and the middle frame; Preferably, the middle frame adhesive is a double-sided adhesive; Preferably, the side adhesive layer is bonded to the middle frame.

10. A method for preparing a display panel, characterized in that: The method comprises: A bonding layer is provided on one side of the light emitting surface of the screen body; Bonding the cover plate to the screen body through the bonding layer, wherein the outer edge of the bonding layer is retracted relative to the outer edge of the screen body and the outer edge of the cover plate; A side adhesive layer for shading is filled at least between the cover plate and the screen body, wherein at least a part of the side adhesive layer is arranged in the same layer as the adhesive layer.

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