Display panel, display panel prefabricated member, preparation method and display device

Abstract

The invention provides a display panel, a display panel prefabricated member, a preparation method and a display device, and the display panel comprises a display screen which is provided with a display surface and a back surface which are opposite to each other; the circuit board is arranged on the back surface of the display screen; the bonding structure is bonded between the back surface of the display screen and the circuit board; wherein a hollowed-out area is arranged in the bonding structure, the bonding structure is further provided with an opening, and the hollowed-out area is communicated with the outside through the opening. According to the display panel provided by the invention, the circuit board is bonded to the back surface of the display screen through the bonding structure; wherein a hollow area is arranged in the bonding structure, the bonding structure is further provided with an opening, and the hollow area is communicated with the outside through the opening, so that poor appearance such as bubbles or pits when the circuit board is bonded is avoided, and the performance of the display panel is improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) is an active light-emitting device with a sandwich structure consisting of multiple organic layers and electrodes on both sides. At present, display screens based on AMOLED (Active-Matrix Organic Light-Emitting Diode) have been commercialized in the fields of smart phones, watches and laptops.

[0003] However, the performance of existing display screens needs to be improved. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display panel that can avoid poor appearance such as bubbles or pits when the circuit boards are attached.

[0005] Based on the above purpose, the present application provides a display panel, which includes:

[0006] A display screen having a display surface and a back surface facing each other;

[0007] A circuit board is arranged on the back of the display screen;

[0008] A bonding structure bonded between the back of the display screen and the circuit board;

[0009] Wherein, a hollow area is arranged inside the bonding structure, and the bonding structure is also provided with an opening, and the hollow area is connected with the outside through the opening.

[0010] In one embodiment, the bonding structure includes a first portion, and the first portion encloses the hollow area and the opening;

[0011] Preferably, the orthographic projection of the bonding structure on the display screen is located within the orthographic projection of the circuit board on the display screen;

[0012] Preferably, the bonding structure comprises double-sided tape;

[0013] In one embodiment, the bonding structure further includes a second portion, and the second portion is disposed in the hollow area;

[0014] Preferably, the second portion extends along the width direction of the hollow area;

[0015] Preferably, one end of the second part is connected to the first part, and the other end is spaced apart from the first part;

[0016] Preferably, the bonding structure includes a plurality of the second parts, and the plurality of the second parts are arranged at intervals along the length direction of the hollow area.

[0017] In one embodiment, the display screen includes a screen body and a supporting structure, and the bonding structure is bonded between the supporting structure and the circuit board;

[0018] Preferably, the support structure comprises at least one of a composite tape, a copper foil or an aluminum plate;

[0019] Preferably, the supporting structure and the bonding structure are made in one piece.

[0020] Based on the same inventive concept, the present application also discloses a display panel prefabricated component, which includes:

[0021] A display screen having a display surface and a back surface facing each other;

[0022] An adhesive structure, adhered to the back of the display screen, wherein a hollow area is provided inside the adhesive structure, and the adhesive structure is also provided with an opening, and the hollow area is connected to the outside through the opening;

[0023] A protective structure, disposed on a side of the bonding structure away from the display screen;

[0024] Wherein, the orthographic projection of the bonding structure on the display screen is located within the orthographic projection of the protection structure on the display screen.

[0025] In one embodiment, the protective structure includes a protective film layer, the protective film layer is partially bonded to the bonding structure and partially bonded to the display screen, and the thickness of the protective film layer is greater than or equal to the thickness of the bonding structure;

[0026] Preferably, the orthographic projection of the bonding structure on the display screen is located within the orthographic projection of the protective film layer on the display screen;

[0027] Preferably, the bonding structure comprises double-sided tape.

[0028] The bonding structure includes a first part, and the first part encloses the hollow area and the opening;

[0029] Preferably, the bonding structure further comprises a second portion, and the second portion is arranged in the hollow area;

[0030] Preferably, the second portion extends along the width direction of the hollow area;

[0031] Preferably, one end of the second part is connected to the first part, and the other end is spaced apart from the first part;

[0032] Preferably, the bonding structure includes a plurality of the second parts, and the plurality of the second parts are arranged at intervals along the length direction of the hollow area.

[0033] In one embodiment, the protection structure further includes a bearing film layer, and the bearing film layer is disposed on a side of the protection film layer away from the display screen;

[0034] Preferably, the orthographic projection of the protective film layer on the display screen is located within the orthographic projection of the carrier film layer on the display screen;

[0035] Preferably, the boundary of the carrier film layer and the boundary of the protective film layer are staggered;

[0036] Preferably, the tearing portion of the bearing film layer and the tearing portion of the protective film layer are staggered.

[0037] In one embodiment, the bonding structure includes a first portion, and the first portion encloses the hollow area and the opening;

[0038] Preferably, the bonding structure further comprises a second portion, and the second portion is arranged in the hollow area;

[0039] Preferably, the second portion extends along the width direction of the hollow area;

[0040] Preferably, one end of the second part is connected to the first part, and the other end is spaced apart from the first part;

[0041] Preferably, the bonding structure includes a plurality of the second parts, and the plurality of the second parts are arranged at intervals along the length direction of the hollow area.

[0042] In one embodiment, the display screen includes a screen body and a supporting structure, and the supporting structure is arranged between the screen body and the bonding structure;

[0043] Preferably, the support structure comprises at least one of a composite tape, a copper foil or an aluminum plate;

[0044] Preferably, the supporting structure, the bonding structure and the protective structure are made of one piece.

[0045] Based on the same inventive concept, the present application also discloses a method for preparing a display panel, which comprises:

[0046] Providing a screen body, the screen body having a display surface facing backward and a back surface;

[0047] The adhesive assembly is arranged on the back of the screen body, the adhesive assembly comprises a support structure, an adhesive structure and a protective structure which are stacked in sequence in a direction away from the display screen, a hollow area is arranged inside the adhesive structure, and the adhesive structure is also provided with an opening, and the hollow area is connected to the outside through the opening;

[0048] removing the protective structure;

[0049] The circuit board is bent and attached to a side of the bonding structure away from the screen body.

[0050] Based on the same inventive concept, the present application also discloses a display device, which includes any one of the display panels described above.

[0051] Compared with the prior art, the display panel provided in the present application bonds the circuit board to the back of the display screen through a bonding structure; wherein a hollow area is provided inside the bonding structure, and the bonding structure is also provided with an opening, and the hollow area is connected to the outside through the opening, thereby avoiding the appearance of bubbles or pits when the circuit boards are bonded, thereby improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0053] Figure 1 is a schematic diagram of a related display panel;

[0054] Figure 2 A schematic diagram of the layer structure of a display panel provided in an embodiment of the present application;

[0055] Figure 3 A schematic diagram of a bonding structure provided in one embodiment of the present application;

[0056] Figure 4 A schematic diagram of a bonding structure and a display screen provided in an embodiment of the present application;

[0057] Figure 5 A schematic diagram of a bonding structure provided in another embodiment of the present application;

[0058] Figure 6 A schematic diagram of a bonding structure and a display screen provided in another embodiment of the present application;

[0059] Figure 7 A schematic diagram of a bonding structure provided in another embodiment of the present application;

[0060] Figure 8 A schematic diagram of the layer structure of a display panel provided in another embodiment of the present application;

[0061] Fig. 9 A schematic diagram of the layer structure of a display panel preform provided in another embodiment of the present application;

[0062] Fig.10 A schematic diagram of the layer structure of a display panel preform provided in another embodiment of the present application;

[0063] Fig.11 A schematic diagram of a partial structure of a display panel prefabricated component provided in another embodiment of the present application;

[0064] Fig.12 A flow chart of a method for preparing a display panel provided in another embodiment of the present application;

[0065] Fig.13 A process diagram of a method for preparing a display panel provided in another embodiment of the present application Figure 1 ;

[0066] Fig.14 A process diagram of a method for preparing a display panel provided in another embodiment of the present application Figure 2 .

[0067] Marking Description:

[0068] 100. Display panel;

[0069] 1. Display screen; 11. Screen body; 12. Support structure;

[0070] 2. Circuit board;

[0071] 3. bonding structure; 31. hollow area; 32. opening; 33. first part; 331. sub-part; 332. gap; 34. second part;

[0072] 4. Protective structure; 41. Protective film layer; 42. Bearing film layer; 43. Tearing portion;

[0073] 5. Bonding components;

[0074] 200. Display panel prefabricated component. DETAILED DESCRIPTION

[0075] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0076] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0077] As AMOLED technology matures, its market applications are becoming more and more diversified, migrating from early mobile phones to mid-sized products such as laptops and car-mounted products, such as tablets, notebooks, and car-mounted central control and rear seats.

[0078] Reference Figure 1 As shown, a related display panel 100 includes a display screen 1 and a circuit board 2, wherein the circuit board 2 is bent and bonded to the double-sided adhesive on the back of the display screen 1. During bonding, the circuit board 2 needs to be pressed by rolling, and due to the large bonding area, the force on the circuit board 2 is uneven, and bubbles or pits and other poor appearances are likely to appear.

[0079] Based on this, the present application provides a display panel solution to solve the above problems.

[0080] Please refer to Figure 2-Figure 4 As shown, a display panel 100 provided in an embodiment of the present application includes a display screen 1, a circuit board 2 and a bonding structure 3. The display screen 1 has a display surface and a back surface opposite to each other. The circuit board 2 is arranged on the back surface of the display screen 1, and the bonding structure 3 is bonded between the back surface of the display screen 1 and the circuit board 2.

[0081] The adhesive structure 3 is provided with a hollow area 31 inside, and the adhesive structure 3 is also provided with an opening 32 , and the hollow area 31 is connected with the outside through the opening 32 .

[0082] The display panel 100 provided in this embodiment bonds the circuit board 2 to the back of the display screen 1 through the bonding structure 3; wherein a hollow area 31 is provided inside the bonding structure 3, and the bonding structure 3 is also provided with an opening 32, and the hollow area 31 is connected to the outside through the opening 32, thereby avoiding the appearance of bubbles or pits when the circuit board 2 is bonded, thereby improving the performance of the display panel 100.

[0083] Specifically, during the bonding process between the circuit board 2 and the adhesive structure 3 , the gas in the hollow area 31 can be discharged through the opening 32 , thereby avoiding the formation of bubbles or pits.

[0084] Reference Figure 5-Figure 6 As shown, in one embodiment, the bonding structure 3 includes a first portion 33, and the first portion 33 encloses a hollow area 31 and an opening 32. The first portion 33 can be bonded to the circuit board 2 to ensure the stability of the bonding of the circuit board 2, and at the same time, the area of ​​the hollow area 31 is large enough to better avoid bubbles or pits during the bonding process between the circuit board 2 and the bonding structure 3. The enclosure of the first portion 33 can be understood as the first portion 33 being continuously arranged or intermittently arranged in its length direction, and the gap is smaller than the opening 32.

[0085] Preferably, the orthographic projection of the bonding structure 3 on the display screen 1 is located within the orthographic projection of the circuit board 2 on the display screen 1 to ensure the stability of the bonding of the circuit board 2 .

[0086] Preferably, the bonding structure 3 includes a double-sided adhesive tape, one side of the double-sided adhesive tape is bonded to the display screen 1 , and the other side of the double-sided adhesive tape is bonded to the circuit board 2 .

[0087] Reference Figure 5-Figure 6 As shown, in one embodiment, the bonding structure 3 further includes a second portion 34, and the second portion 34 is disposed in the hollow area 31. The second portion 34 is beneficial to increase the bonding area of ​​the circuit board 2 and ensure the flatness of the circuit board 2 after bonding.

[0088] Preferably, the second portion 34 extends along the width direction of the hollow area 31 , which is beneficial to increasing the flatness of the circuit board 2 after bonding.

[0089] Preferably, one end of the second portion 34 is connected to the first portion 33 , and the other end is spaced apart from the first portion 33 , thereby avoiding the formation of a closed area in the hollow area 31 , thereby avoiding the formation of bubbles or pits.

[0090] Preferably, the bonding structure 3 includes a plurality of second portions 34 , and the plurality of second portions 34 are arranged at intervals along the length direction of the hollow region 31 , so as to further increase the flatness of the circuit board 2 after bonding.

[0091] Reference Figure 7 As shown, in one embodiment, the first part 33 is intermittently arranged, and the first part 33 includes a plurality of sub-parts 331, and gaps 332 are formed between adjacent sub-parts 331. The gas in the hollow area 31 can be discharged through the gaps 332, and the gaps 332 cooperate with the openings 32 to enhance the exhaust effect and further avoid the appearance of bubbles or pits.

[0092] Reference Figure 8 As shown, in one embodiment, the display screen 1 includes a screen body 11 and a support structure 12, and the bonding structure 3 is bonded between the support structure 12 and the circuit board 2. The support structure 12 supports the screen body 11 and ensures the strength of the overall structure.

[0093] Preferably, the support structure 12 includes at least one of a composite tape, a copper foil or an aluminum plate.

[0094] Preferably, the support structure 12 and the adhesive structure 3 are made of one piece. During assembly, the support structure 12 and the adhesive structure 3 are assembled together on the back of the display screen 1, thereby reducing the process of attaching double-sided adhesive tape separately, and reducing costs and process risks.

[0095] Based on the same inventive concept, another embodiment of the present application further discloses a display panel preform 200, referring to Figure 3 and 9 As shown, it includes a display screen 1, an adhesive structure 3 and a protective structure 4. The display screen 1 has a display surface and a back surface opposite to each other. The adhesive structure 3 is adhered to the back surface of the display screen 1. A hollow area 31 is arranged inside the adhesive structure 3. The adhesive structure 3 is also provided with an opening 32. The hollow area 31 is connected to the outside through the opening 32. The protective structure 4 is arranged on a side of the adhesive structure 3 away from the display screen 1; wherein the orthographic projection of the adhesive structure 3 on the display screen 1 is located within the orthographic projection of the protective structure 4 on the display screen 1.

[0096] The protective structure 4 is used to provide protection for the bonding structure 3. After the protective structure 4 is removed, the circuit board 2 can be bonded to the back of the display screen 1 through the bonding structure 3. Figure 2 shown.

[0097] Among them, a hollow area 31 is set inside the adhesive structure 3, and the adhesive structure 3 is also set with an opening 32. The hollow area 31 is connected to the outside through the opening 32, so as to avoid the appearance of bubbles or pits when the circuit board 2 is attached, thereby improving the performance of the display panel 100.

[0098] Reference Fig.10 As shown, in one embodiment, the protective structure 4 includes a protective film layer 41, a portion of the protective film layer 41 is bonded to the bonding structure 3, and a portion of the protective film layer 41 is bonded to the display screen 1, and the thickness of the protective film layer 41 is greater than or equal to the thickness of the bonding structure 3. In particular, since the bonding structure 3 is provided with a hollow area 31 inside, and the thickness of the protective film layer 41 is greater than or equal to the thickness of the bonding structure 3, the protective film layer 41 can better fill the hollow area 31 and can better provide protection for the bonding structure 3.

[0099] The orthographic projection of the adhesive structure 3 on the display screen 1 is located within the orthographic projection of the protective film layer 41 on the display screen 1 , so that the adhesive structure 3 can be protected in all directions.

[0100] Preferably, the bonding structure 3 includes a double-sided adhesive tape, one side of the double-sided adhesive tape is bonded to the display screen 1 , and the other side of the double-sided adhesive tape is bonded to the circuit board 2 .

[0101] Reference Fig.10 As shown, in one embodiment, the protective structure 4 further includes a bearing film layer 42, which is disposed on a side of the protective film layer 41 away from the display screen 1. The bearing film layer 42 plays a bearing role, facilitating the formation of the protective film layer 41 and the bonding structure 3 on the bearing film layer 42.

[0102] Preferably, the orthographic projection of the protective film layer 41 on the display screen 1 is located within the orthographic projection of the supporting film layer 42 on the display screen 1 , so as to better support the protective film layer 41 .

[0103] Reference Fig.11 As shown, in one embodiment, the boundary 421 of the carrier film layer 42 and the boundary 411 of the protective film layer 41 are staggered to facilitate film tearing and reduce the impact of the carrier film layer 42 on the protective film layer 41 when tearing off.

[0104] Preferably, the tearing portion of the carrying film layer 42 and the tearing portion of the protective film layer 41 are staggered to facilitate film tearing. Fig.11 As shown, the tearing portion 43 is arranged at the edge of the film layer and can be in a rectangular or semicircular shape to facilitate pinching and tearing.

[0105] Reference Figure 5-Figure 6 As shown, in one embodiment, the bonding structure 3 includes a first portion 33, and the first portion 33 encloses a hollow area 31 and an opening 32. The first portion 33 can be bonded to the circuit board 2 to ensure the stability of the bonding of the circuit board 2, and at the same time, the area of ​​the hollow area 31 is large enough to better avoid bubbles or pits during the bonding process between the circuit board 2 and the bonding structure 3.

[0106] In one embodiment, the bonding structure 3 further includes a second portion 34, and the second portion 34 is disposed in the hollow area 31. The second portion 34 is beneficial to increase the bonding area of ​​the circuit board 2 and ensure the flatness of the circuit board 2 after bonding.

[0107] Preferably, the second portion 34 extends along the width direction of the hollow area 31 , which is beneficial to increasing the flatness of the circuit board 2 after bonding.

[0108] Preferably, one end of the second portion 34 is connected to the first portion 33 , and the other end is spaced apart from the first portion 33 , thereby avoiding the formation of a closed area in the hollow area 31 , thereby avoiding the formation of bubbles or pits.

[0109] Preferably, the bonding structure 3 includes a plurality of second portions 34 , and the plurality of second portions 34 are arranged at intervals along the length direction of the hollow region 31 , so as to further increase the flatness of the circuit board 2 after bonding.

[0110] Reference Fig.10 As shown, in one embodiment, the display screen 1 includes a screen body 11 and a support structure 12, and the support structure 12 is arranged between the screen body 11 and the bonding structure 3. The support structure 12 plays a supporting role for the screen body 11 to ensure the strength of the overall structure.

[0111] Preferably, the support structure 12 comprises at least one of a composite tape, a copper foil or an aluminum plate;

[0112] Preferably, the support structure 12, the adhesive structure 3 and the protective structure 4 are made of one piece. During assembly, the support structure 12 and the adhesive structure 3 are first assembled on the back of the screen body 11, and then the protective structure 4 is removed, thereby reducing the process of attaching double-sided adhesive tape separately, and reducing costs and process risks.

[0113] Based on the same inventive concept, another embodiment of the present application further discloses a method for preparing a display panel, referring to Fig.12 As shown, the following steps are included:

[0114] Step S10, providing a screen body 11, wherein the screen body 11 has a display surface and a back surface facing backwards;

[0115] Step S20, setting the adhesive assembly 5 on the back of the screen body 11, the adhesive assembly 5 includes a support structure 12, an adhesive structure 3 and a protective structure 4 stacked in sequence in a direction away from the screen body 11, a hollow area 31 is provided inside the adhesive structure 3, and the adhesive structure 3 is also provided with an opening 32, and the hollow area 31 is connected to the outside through the opening 32, refer to Figure 3 and 13 shown.

[0116] Step S30: removing the protective structure 4, referring to Fig.14 shown.

[0117] Step S40: bend the circuit board 2 and attach it to the side of the bonding structure 3 away from the screen body 11, referring to Figure 8 shown.

[0118] The method for preparing the display panel provided in this embodiment provides a hollow area 31 inside the adhesive structure 3, and the adhesive structure 3 is also provided with an opening 32. The hollow area 31 is connected to the outside through the opening 32, thereby avoiding the appearance of bubbles or pits when the circuit board 2 is bonded, thereby improving the performance of the display panel 100.

[0119] Preferably, the support structure 12, the adhesive structure 3 and the protective structure 4 in the adhesive assembly 5 are made of one piece. During assembly, the support structure 12 and the adhesive structure 3 are first assembled on the back of the screen body 11, and then the protective structure 4 is removed, thereby reducing the process of attaching double-sided adhesive tape separately, and reducing costs and process risks.

[0120] In the method for preparing the display panel provided in this embodiment, the structure and mechanism of each component thereof can refer to the above-mentioned display panel embodiment and display panel preform embodiment, and have the same technical effects, which will not be described in detail here.

[0121] Based on the same inventive concept, another embodiment of the present application further discloses a display device, which includes the display panel in the above embodiment. Further, the display device includes a mobile phone, VR equipment, computer, television, car display equipment, etc.

[0122] A display device provided in this embodiment has a display panel 100 in which a circuit board 2 is bonded to the back of a display screen 1 through an adhesive structure 3; wherein a hollow area 31 is provided inside the adhesive structure 3, and an opening 32 is also provided in the adhesive structure 3, and the hollow area 31 is connected to the outside through the opening 32, thereby avoiding the appearance of bubbles or pits when the circuit board 2 is bonded, which is beneficial to improving the performance of the display device.

[0123] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0124] It should be noted that the above describes some embodiments of the present 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 an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0125] The embodiments of the present 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 the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: A display screen having a display surface and a back surface facing each other; A circuit board is arranged on the back of the display screen; A bonding structure bonded between the back of the display screen and the circuit board; Wherein, a hollow area is arranged inside the bonding structure, and the bonding structure is also provided with an opening, and the hollow area is connected with the outside through the opening.

2. The display panel according to claim 1, characterized in that: The bonding structure includes a first part, and the first part encloses the hollow area and the opening; Preferably, the orthographic projection of the bonding structure on the display screen is located within the orthographic projection of the circuit board on the display screen; Preferably, the bonding structure comprises double-sided tape; Preferably, the bonding structure further comprises a second portion, and the second portion is arranged in the hollow area; Preferably, the second portion extends along the width direction of the hollow area; Preferably, one end of the second part is connected to the first part, and the other end is spaced apart from the first part; Preferably, the bonding structure includes a plurality of the second parts, and the plurality of the second parts are arranged at intervals along the length direction of the hollow area.

3. The display panel according to claim 1, characterized in that: The display screen comprises a screen body and a supporting structure, and the bonding structure is bonded between the supporting structure and the circuit board; Preferably, the support structure comprises at least one of a composite tape, a copper foil or an aluminum plate; Preferably, the supporting structure and the bonding structure are made in one piece.

4. A display panel prefabricated component, characterized in that: include: A display screen having a display surface and a back surface facing each other; An adhesive structure, adhered to the back of the display screen, wherein a hollow area is provided inside the adhesive structure, and the adhesive structure is also provided with an opening, and the hollow area is connected to the outside through the opening; A protective structure, disposed on a side of the bonding structure away from the display screen; Wherein, the orthographic projection of the bonding structure on the display screen is located within the orthographic projection of the protection structure on the display screen.

5. The display panel preform according to claim 4, characterized in that: The protective structure comprises a protective film layer, the protective film layer is partially bonded to the bonding structure and partially bonded to the display screen, and the thickness of the protective film layer is greater than or equal to the thickness of the bonding structure; Preferably, the orthographic projection of the bonding structure on the display screen is located within the orthographic projection of the protective film layer on the display screen; Preferably, the bonding structure comprises double-sided tape.

6. The display panel preform according to claim 5, characterized in that: The protection structure further comprises a bearing film layer, and the bearing film layer is arranged on a side of the protection film layer away from the display screen; Preferably, the orthographic projection of the protective film layer on the display screen is located within the orthographic projection of the carrier film layer on the display screen; Preferably, the boundary of the carrier film layer and the boundary of the protective film layer are staggered; Preferably, the tearing portion of the bearing film layer and the tearing portion of the protective film layer are staggered.

7. The display panel preform according to claim 4, characterized in that: The bonding structure includes a first part, and the first part encloses the hollow area and the opening; Preferably, the bonding structure further comprises a second portion, and the second portion is arranged in the hollow area; Preferably, the second portion extends along the width direction of the hollow area; Preferably, one end of the second part is connected to the first part, and the other end is spaced apart from the first part; Preferably, the bonding structure includes a plurality of the second parts, and the plurality of the second parts are arranged at intervals along the length direction of the hollow area.

8. The display panel preform according to claim 4, characterized in that: The display screen comprises a screen body and a supporting structure, wherein the supporting structure is arranged between the screen body and the bonding structure; Preferably, the support structure comprises at least one of a composite tape, a copper foil or an aluminum plate; Preferably, the supporting structure, the bonding structure and the protective structure are made of one piece.

9. A method for preparing a display panel, characterized in that: include: Providing a screen body, the screen body having a display surface facing backward and a back surface; The adhesive assembly is arranged on the back of the display screen, the adhesive assembly comprises a support structure, an adhesive structure and a protective structure which are stacked in sequence in a direction away from the screen body, a hollow area is arranged inside the adhesive structure, and the adhesive structure is also provided with an opening, and the hollow area is connected to the outside through the opening; removing the protective structure; The circuit board is bent and attached to a side of the bonding structure away from the screen body.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 3.

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