Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel and a preparation method thereof, and a display device. The display panel comprises a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface; the first surface is provided with a plurality of first binding contacts, and the second surface is provided with a plurality of second binding contacts; the display panel further comprises a plurality of connecting lines and a plurality of auxiliary structures. The connecting line extends from the first surface to the second surface through the side surface; the connecting line is correspondingly connected with the first binding contact and the second binding contact; at least part of the connecting lines are located between the two adjacent auxiliary structures. According to the technical scheme, the reliability of electric connection between the connecting line and the binding contact in the display panel can be improved, the overall impedance of the connecting line can be reduced, and the signal transmission efficiency of the connecting line can be improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display panel, a preparation method thereof, and a display device. Background Art

[0002] With the development of the information society, the demand for display devices for displaying information such as images and texts is increasing day by day. Display devices have gradually become indispensable electronic devices in people's current clothing, food, housing, and transportation, making people's display requirements for display devices gradually increase.

[0003] Currently, the core structure of a display device is a display panel. In the prior art, the display panel can adopt a side-wiring process to achieve a full-screen display with a narrow border or an extremely narrow border, or to achieve seamless splicing display of a large-size display device. However, when preparing the side-wiring, due to the limitations of the preparation process, the preparation yield of the side-wiring will be affected, resulting in a risk of wire breakage in the side-wiring, and further affecting the display effect of the display panel. Summary of the Invention

[0004] The present invention provides a display panel, a preparation method thereof, and a display device, which can improve the electrical connection reliability between the connection lines and the bonding contacts, is beneficial to reducing the overall impedance of the connection lines, and improving the signal transmission efficiency of the connection lines.

[0005] In a first aspect, the present invention provides a display panel, including: a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface;

[0006] A plurality of first bonding contacts are provided on the first surface, and a plurality of second bonding contacts are provided on the second surface;

[0007] The display panel further includes a plurality of connection lines and a plurality of auxiliary structures; the connection lines extend from the first surface to the second surface through the side surface; the connection lines are correspondingly connected to the first bonding contacts and the second bonding contacts; at least a part of the connection lines is located between two adjacent auxiliary structures.

[0008] In a second aspect, the present invention provides a preparation method of a display panel, including:

[0009] Providing a display substrate; the display substrate includes a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface; a plurality of first bonding contacts are provided on the first surface, and a plurality of second bonding contacts are provided on the second surface;

[0010] Form a plurality of connection lines and a plurality of auxiliary structures; the connection lines extend from the first surface through the side surface to the second surface; the connection lines correspondingly connect the first bonding contact and the second bonding contact; at least part of the connection lines are located between two adjacent auxiliary structures.

[0011] In a third aspect, the present invention provides a display device including a plurality of display panels according to the first aspect.

[0012] According to the technical solution provided by the present invention, by arranging at least part of the connection lines between two adjacent auxiliary structures, the auxiliary structures located on one side or both sides of the connection lines can assist in connecting to the first bonding contact or the second bonding contact. When problems such as the preparation width of the connection lines becoming narrower occur, the auxiliary structures can be connected in parallel to the connection lines to increase the overall line width of the connection lines, improve the electrical connection reliability between the connection lines and the bonding contacts, facilitate reducing the overall impedance of the connection lines, and improve the signal transmission efficiency of the connection lines. In addition, when faults such as disconnection or short circuit occur in the connection lines, the connection lines can also be repaired through the auxiliary structures to ensure the signal transmission reliability between the first bonding contact and the second bonding contact, and further facilitate improving the display effect of the display panel. When the display panel is applied to a tiled display screen, the signal lines arranged on the display surface side of the display panel can be led to the back of the display panel through the connection lines, so as to realize the bonding of flexible printed circuit boards, driving chips, etc. on the back, and realize the interconnection between two adjacent display panels, which further facilitates the seamless tiling of the tiled display screen and improves the display effect of the tiled display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a schematic structural diagram of a display panel in the related art;

[0014] Figure 2 FIG. is a schematic structural diagram of a dry film photoresist attached to the surface of the display panel in the related art;

[0015] Figure 3 FIG. is a top view structural diagram of a display panel provided by an embodiment of the present invention;

[0016] Figure 4 FIG. is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0017] Figure 5 FIG. is a side view structural diagram of a display panel provided by an embodiment of the present invention;

[0018] Figure 6 FIG. is a side view structural diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 7 FIG. is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 8 Schematic structural diagram of a dry film photoresist provided for the related art;

[0021] Figure 9 Schematic structural diagram of a dry film photoresist provided by an embodiment of the present invention;

[0022] Figure 10 Schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0023] Figure 11 Schematic side view structural diagram of another display panel provided by an embodiment of the present invention;

[0024] Figure 12 Schematic structural diagram of another dry film photoresist provided by an embodiment of the present invention;

[0025] Figure 13 Schematic structural diagram of yet another display panel provided by an embodiment of the present invention;

[0026] Figure 14 Schematic side view structural diagram of yet another display panel provided by an embodiment of the present invention;

[0027] Figure 15 Schematic structural diagram of another dry film photoresist provided by an embodiment of the present invention;

[0028] Figure 16 Schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0029] Figure 17 Schematic side view structural diagram of a display panel provided by an embodiment of the present invention;

[0030] Figure 18 Schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0031] Figure 19 For Figure 18 Schematic side view structural diagram of the display panel in;

[0032] Figure 20 Schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0033] Figure 21 Schematic structural diagram of yet another display panel provided by an embodiment of the present invention;

[0034] Figure 22 Schematic side view structural diagram of a display panel provided by an embodiment of the present invention;

[0035] Figure 23Another schematic side view of a display panel provided by an embodiment of the present invention;

[0036] Figure 24 Another schematic view of a display panel provided by an embodiment of the present invention;

[0037] Figure 25 Another schematic side view of a display panel provided by an embodiment of the present invention;

[0038] Figure 26 Another schematic side view of a display panel provided by an embodiment of the present invention;

[0039] Figure 27 Another schematic view of a display panel provided by an embodiment of the present invention;

[0040] Figure 28 A flowchart of a method for manufacturing a display panel provided by an embodiment of the present invention;

[0041] Figure 29 A schematic structural view of a process for manufacturing a display panel provided by an embodiment of the present invention;

[0042] Figure 30 A flowchart of a process for forming multiple connection lines and multiple auxiliary structures provided by an embodiment of the present invention;

[0043] Figure 31 A schematic structural view of a process for forming multiple connection lines and multiple auxiliary structures provided by an embodiment of the present invention;

[0044] Figure 32 A schematic view of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the accompanying drawings, rather than all the structures.

[0046] Figure 1 A schematic view of a display panel in related art, as Figure 1As shown, the display panel 001 includes a first surface 01, a second surface 02, and a side surface 03 connecting the first surface 01 and the second surface 02. The display panel 001 further includes a plurality of connection lines 04. The connection lines 04 extend from the first surface 01 through the side surface 03 to the second surface 02, ensuring that signals can be transmitted from the first surface 01 to the second surface 02, or from the second surface 02 to the first surface 01. Thus, a driving chip and / or a flexible printed circuit board, etc., can be bonded to the back of the display panel 001 to achieve a narrow-bezel or borderless full-screen display. Or, when using this display panel to form a tiled display screen, adjacent two display panels 001 can be interconnected on the back of the display panel 001 (opposite to the display surface of the display panel 001), thereby achieving seamless tiling of the tiled display screen.

[0047] However, since the connection lines 04 are located on the side of the display panel 001, when using conventional deposition and other processes to prepare the connection lines 04, problems such as uneven deposition thickness are likely to occur, resulting in risks such as broken lines and short circuits in the formed connection lines 04, and further affecting the display effect of the display panel.

[0048] In the prior art, laser engraving or pad printing and other processes are usually used to prepare the connection lines 04. However, the preparation efficiency of the laser engraving process is low, and the laser has a large amount of energy, which is likely to damage devices such as circuits inside the display panel; there is a misalignment between the connection lines 04 formed on the side surface 03 by the pad printing process and the connection lines 04 on the first surface 01 or the second surface 02, affecting the transmission reliability of electrical signals.

[0049] In addition, in related technologies, a dry film photoresist process is used to prepare connection lines. As Figure 2 shown, by attaching a dry film photoresist 05 with a connection line preparation pattern to the side of the display panel 001 and using the dry film photoresist 05 as a mask to form connection lines, connection lines can be formed through processes such as coating and deposition. However, during the process of preparing the connection lines, in order to ensure the bonding reliability of the dry film photoresist 05 to the display panel 001, pressure is applied to the dry film photoresist 05, causing the dry film photoresist 05 to deform, and it will squeeze towards the area 0051 for setting the connection lines, thereby making the setting area 0051 of the connection lines narrower, resulting in a smaller line width of the formed connection lines 04 (as Figure 1 shown), leading to a high risk of broken lines in the connection lines 04 and further affecting the display effect of the display panel 001.

[0050] To solve the above problems, an embodiment of the present invention provides a display panel, including a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface; a plurality of first bonding contacts are provided on the first surface, and a plurality of second bonding contacts are provided on the second surface; the display panel further includes a plurality of connection lines and a plurality of auxiliary structures; the connection lines extend from the first surface through the side surface to the second surface; the connection lines are correspondingly connected to the first bonding contacts and the second bonding contacts; at least part of the connection lines are located between two adjacent auxiliary structures.

[0051] With the above technical solution, by arranging at least part of the connection lines between two adjacent auxiliary structures, the auxiliary structures located on one side or both sides of the connection lines can assist in connecting to the first bonding contacts or the second bonding contacts. When problems such as the preparation width of the connection lines becoming narrower occur, the auxiliary structures can be connected in parallel to the connection lines to increase the overall line width of the connection lines, improve the electrical connection reliability between the connection lines and the bonding contacts, help reduce the overall impedance of the connection lines, and improve the signal transmission efficiency of the connection lines. In addition, when faults such as disconnection or short circuit occur in the connection lines, the connection lines can also be repaired through the auxiliary structures to ensure the signal transmission reliability between the first bonding contacts and the second bonding contacts, and thus help improve the display effect of the display panel. When the display panel is applied to a tiled display screen, the signal lines provided on the display surface side of the display panel can be led to the back of the display panel through the connection lines, so as to achieve the bonding of a flexible printed circuit board, a driving chip, etc. on the back, and realize the interconnection between two adjacent display panels, which is conducive to the seamless tiling of the tiled display screen and improves the display effect of the tiled display screen.

[0052] The above is the core idea of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0053] Figure 3 It is a top view structural schematic diagram of a display panel provided by an embodiment of the present invention. Figure 4 It is a structural schematic diagram of a display panel provided by an embodiment of the present invention. Figure 5 It is a side view structural schematic diagram of a display panel provided by an embodiment of the present invention, referring to Figures 3 - 5, the display panel 100 includes a first surface 11, a second surface 12 opposite to the first surface 11, and a side surface 13 connecting the first surface 11 and the second surface 12; a plurality of first bonding contacts 21 are provided on the first surface 11, and a plurality of second bonding contacts 22 are provided on the second surface 12; the display panel 100 further includes a plurality of connection lines 31 and a plurality of auxiliary structures 32; the connection lines 31 extend from the first surface 11 through the side surface 13 to the second surface 12; the connection lines 31 correspondingly connect the first bonding contacts 21 and the second bonding contacts 22; at least a part of the connection lines 31 is located between two adjacent auxiliary structures 32.

[0054] It should be noted that the display panel 100 may include a display area 110 and at least a part of a non-display area 120 surrounding the display area 10. The display area 110 includes a plurality of pixels 140 arranged in an array and a plurality of signal lines. The signal lines may include a gate signal line S, a data signal line D, etc., such that the gate signal line S can transmit a gate signal to the pixel 140 electrically connected thereto, and the data signal line D can transmit a data signal to the pixel 140 electrically connected thereto. Thus, when the gate signal line S electrically connected to the pixel 140 transmits an effective level of the gate signal, the data signal transmitted by the data signal line D can be controlled to be written into the pixel 140, so that the pixel 140 can display and emit light according to the data signal. The non-display area 120 may include a wiring area 121 located on at least one side of the display area 110. The first bonding contacts 21, the second bonding contacts 22, and the connection lines 31 are provided in the wiring area 121. One end of the connection line 31 is connected to the first bonding contact 21, and the other end is connected to the second bonding contact 22. Among them, the first bonding contact 21 or the second bonding contact 22 may be electrically connected to at least a part of the signal lines in the display area 110. In an exemplary embodiment, the first bonding contact 21 or the second bonding contact 22 may be electrically connected to the data signal line D in the display area 110. In another exemplary embodiment, the first bonding contact 21 or the second bonding contact 22 may be electrically connected to the gate signal line S in the display area 110. In other exemplary embodiments, some of the first bonding contacts 21 or the second bonding contacts 22 may be electrically connected to the gate signal line S, and some of the first bonding contacts 21 or the second bonding contacts 22 may be electrically connected to the data signal line D. The specific connection manner between the bonding contacts and the signal lines can be designed according to actual needs, and the embodiments of the present invention do not make specific limitations thereto.

[0055] It can be understood that when the signal lines further include other signal lines, such as a reset signal line, a power supply signal line, a clock signal line, etc., there may also be some of the first bonding contacts 21 or the second bonding contacts 22 electrically connected to at least one of the signal lines such as the reset signal line and the power supply signal line. Specifically, it can be designed according to actual needs, and the embodiments of the present invention do not make specific limitations thereto.

[0056] Among them, the pixel 140 may include a pixel circuit and a light-emitting element. The pixel circuit may be electrically connected to a signal line so that the pixel circuit controls the light-emitting element to emit light for display according to the signal transmitted by the signal line. The light-emitting element may include at least one of an OLED, a micro LED, and a mini LED, and may be specifically designed according to actual needs. The embodiments of the present invention do not make specific limitations thereto.

[0057] It should be noted that in the direction perpendicular to the display surface of the display panel, the projected shape of the display panel may include regular or irregular shapes such as a triangle, a quadrilateral, a pentagon, etc., and may be specifically designed according to actual needs. On the premise of no special limitation, the embodiments of the present invention will take the projected shape of the display panel including a quadrilateral as an example to exemplarily illustrate the technical solutions of the embodiments of the present invention.

[0058] Continuing to refer to Figure 3 and Figure 4 , one of the first surface 11 and the second surface 12 of the display panel 100 may be the display surface of the display panel 100, and the other may be the back surface on the side of the display panel 100 facing away from the display surface. Taking the first surface 11 as the display surface of the display panel 100 and the second surface 12 as the back surface of the display panel 100 as an example. The first bonding contact 21 provided on the first surface 11 may be electrically connected to the signal line in the display area 110, and the second bonding contact 22 provided on the second surface 12 may be used for bonding a driving chip, a flexible circuit board, or electrically connecting to other display panels, etc.

[0059] The display panel 100 further includes a side surface 13 connecting the first surface 11 and the second surface 12. The connection line 31 disposed on the side surface 13 can be electrically connected to the first bonding contact 21 and the second bonding contact 22 respectively, so as to be electrically connected to a driving chip, a flexible printed circuit board, or other display panels through the second bonding contact 22, and be electrically connected to the signal lines in the display area 110 through the first bonding contact 21, such that the connection line 31 can receive the display signal provided by the driving chip, the flexible printed circuit board, or other display panels, and transmit the display signal to the signal lines in the display area 110 to control the pixels 140 in the display area 110 to display and emit light. Thus, by providing the connection line 31 connecting the first bonding contact 21 and the second bonding contact 22, it can ensure the normal transmission of the display signal between the driving chip and / or the flexible printed circuit board and the signal lines in the display area 110, or between the display panels 100, ensure that the display panel can display normally, or ensure that the display panels 100 in the tiled display screen can display synchronously, improving the display effect; meanwhile, by disposing the second bonding contact 22 for bonding the driving chip and the flexible printed circuit board, or for connecting to other display panels on the second surface 12 (the back surface on the side of the back display surface) of the display panel 100, it is thus not necessary to reserve a large non-display area size on the first surface 11 (display surface) of the display panel 100, and further, a narrow bezel design of the display panel can be achieved, or seamless tiling of the tiled display screen formed by multiple display panels 100 can be achieved.

[0060] In addition, the display panel 100 may further include a plurality of auxiliary structures 32. At least part of the connection lines 31 are located between two adjacent auxiliary structures 32, that is, auxiliary structures 32 are disposed on opposite sides of part of the connection lines 31, or auxiliary structures 32 are disposed on opposite sides of each connection line 31. Specifically, it can be designed according to actual needs, and the embodiments of the present invention do not make specific limitations thereto.

[0061] Wherein, the materials of the auxiliary structure 32 and the connection line 31 can both be conductive materials, and the materials of the auxiliary structure 32 and the connection line 31 can be the same or different, specifically, it can be designed according to actual needs. In an optional embodiment, the materials of the auxiliary structure 32 and the connection line 31 can be the same. For example, the materials of the auxiliary structure 32 and the connection line 31 can both include conductive materials such as gold, silver, or copper. The auxiliary structure 32 can assist the connection line 31 to be electrically connected to the first bonding contact 21 and the second bonding contact 22 to ensure the connection accuracy between the connection line 31 and the first bonding contact 21 and the second bonding contact 22, and ensure that the display signal can be accurately transmitted between the first bonding contact 21 and the second bonding contact 22, thereby being beneficial to improving the display accuracy of the display panel 100.

[0062] In an optional embodiment, as described above, when preparing the connection line 31 using a dry film photoresist, the size of the connection line setting area will be reduced due to the deformation of the dry film photoresist during attachment, resulting in the narrowing of the formed connection line 31, thereby causing a risk of breakage in some connection lines 31. Alternatively, during the use of the display panel 100, the connection line 31 may be squeezed or the like, resulting in faults such as open circuit and short circuit in the connection line 31. By providing auxiliary structures 32 on at least opposite sides of at least some of the connection lines 31, the connection line 31 can be connected to the first bonding contact 21 or the second bonding contact 22 through the auxiliary structures 32 located on one side or opposite sides of the connection line 31. The auxiliary structure 32 can provide auxiliary connection for the connection line 31, improve the electrical connection reliability between the connection line 31 and the bonding contact, and is beneficial to reducing the overall impedance of the connection line 31, improving the accuracy of signal transmission, and further improving the display effect of the display panel 100.

[0063] It should be noted that by arranging at least some of the connection lines 31 between two adjacent auxiliary structures 32, when auxiliary connection or faults such as disconnection occur in this part of the connection lines 31, any one or two of the two adjacent auxiliary structures 32 can be selected for auxiliary connection or repair. As Figure 5 shown, there is an auxiliary structure 32 on one side of a part of the connection lines 318. When a disconnection fault occurs in the connection line 318, the auxiliary structure 328 located on one side of the connection line 318 can be used for auxiliary connection or repair. Figure 6 This is a schematic side view of another display panel provided by an embodiment of the present invention. As Figure 6 shown, in order to improve the reliability of auxiliary connection or repair for each connection line 31, auxiliary structures 32 can be arranged on both opposite sides of each connection line 31. When auxiliary connection or faults such as disconnection occur in each connection line 31, for example, when the connection line 318 is disconnected, the connection line 318 can select any one or two of the two auxiliary structures 32 located on its opposite sides for auxiliary connection or repair, satisfying the selective connection of the connection line 31 to the auxiliary structure 32. And when the auxiliary structure 32 on one side of the connection line 31 is used by other connection lines 21, the connection line 31 can also select the auxiliary structure 32 on the other side of the connection line 31 for auxiliary connection or repair, improving the reparability of the connection line 31.

[0064] It should also be noted that Figure 3 and Figure 4 only show that the connection line 31 is located on one side surface 13 of the display panel 100. In other optional embodiments, Figure 7 This is a schematic structural view of another display panel provided by an embodiment of the present invention. As Figure 7As shown, the connection line 31 can also be located at two opposite side surfaces 13 of the display panel 100, or at the four side surfaces 13 of the display panel 100, which can be set according to actual needs and are not specifically limited here. For ease of description, without special limitations, the embodiments of the present invention will exemplarily illustrate the technical solutions of the embodiments of the present invention only by taking the connection line 04 located on one side surface 13 of the display panel 100 as an example.

[0065] In an optional embodiment, when the materials of the auxiliary structure 32 and the connection line 31 are the same. For example, when the materials of both the auxiliary structure 32 and the connection line 31 are copper, the connection line 31 and the auxiliary structure 32 can be formed from the same material in the same manufacturing process.

[0066] Exemplarily, taking the preparation of the connection line 31 by the dry film photoresist process as an example for illustration, Figure 8 FIG. is a schematic structural diagram of a dry film photoresist provided by the related art. As Figure 8 shown, when the auxiliary structure 32 is not provided, only a plurality of openings need to be provided at intervals in the dry film photoresist 40, so that the dry film photoresist 40 can include a plurality of strip-shaped colloid parts 401 and the gap parts 402 located between two adjacent strip-shaped colloid parts 401. By the hot pressing process, the dry film photoresist 40 is attached to the side surface 13 of the display panel and the first surface 11 and the second surface 12 connected to the side surface 13. The dry film photoresist 40 is squeezed, which will cause the strip-shaped colloid part 401 to deform and squeeze towards the gap part 402, making the size of the gap part 402 smaller, resulting in that the connection line 31 formed at the gap part 402 with this dry film photoresist 40 as a mask has a smaller line width and a higher risk of line breakage; in addition, no auxiliary structure is formed on both sides of the connection line 31 formed by using the dry film photoresist 40. When the connection line 31 breaks, an additional auxiliary structure needs to be provided to achieve the auxiliary connection of the connection line 31, thus making the manufacturing process steps relatively complex and resulting in a higher manufacturing cost of the display panel.

[0067] In view of the above technical problems, Figure 9 FIG. is a schematic structural diagram of a dry film photoresist provided by the embodiments of the present invention. Referring to Figure 6 and Figure 9 compared with Figure 8The dry film photoresist 40 shown. In the dry film photoresist 40 of the embodiment of the present invention, at least one hollow structure is provided on the strip-shaped colloid part 401 of the dry film photoresist 40. This hollow structure serves as the hollow part 42. When subsequently laminating the dry film photoresist 40 and causing the strip-shaped colloid part 401 of the dry film photoresist 40 to deform, the deformation generated by the strip-shaped colloid part 401 can be released towards the hollow part 42, reducing the extrusion on the gap part 402, ensuring that the gap part 402 can have a sufficiently large size for arranging the connecting wire, ensuring that the connecting wire 31 formed at the gap part 402 has a sufficient width, and improving the connection stability of the connecting wire 31. In addition, while forming the connecting wire 31, an auxiliary structure 32 will also be formed at the hollow part 42. Thus, during the use of the display panel 100, when a fault problem such as breakage or short circuit occurs in the connecting wire 31, the first binding contact 21 and the second binding contact 22 can be connected through the auxiliary structure 32, improving the maintenance convenience of the display panel 100, simplifying the manufacturing process of the display panel 100, and reducing the cost of the display panel 100.

[0068] In the technical solution of the present invention, by arranging at least part of the connecting wire between two adjacent auxiliary structures, the auxiliary structures located on one side or both sides of the connecting wire can assist in connecting with the first binding contact or the second binding contact. When problems such as a narrowing of the preparation width occur in the connecting wire, the auxiliary structure can be connected in parallel to the connecting wire, improving the electrical connection reliability between the connecting wire and the binding contact, facilitating a reduction in the overall impedance of the connecting wire, and improving the signal transmission efficiency of the signal wire. In addition, when a fault such as a break or short circuit occurs in the connecting wire, the connecting wire can also be repaired through the auxiliary structure, ensuring the signal transmission reliability between the first binding contact and the second binding contact, and further facilitating an improvement in the display effect of the display panel. When the display panel is applied to a tiled display screen, the signal wire arranged on the display surface side of the display panel can be led to the back of the display panel through the connecting wire, thereby realizing the binding of a flexible circuit board, a driving chip, etc. on the back, and realizing the interconnection between two adjacent display panels, further facilitating the seamless tiling of the tiled display screen and improving the display effect of the tiled display screen.

[0069] Optionally, Figure 10 is a schematic structural diagram of another display panel provided by an embodiment of the present invention, Figure 11 is a schematic side structural diagram of another display panel provided by an embodiment of the present invention. Referring to Figure 10 and Figure 11 , the display panel 100 further includes a first chamfered surface 14 connected between the side surface 13 and the first surface 11; the first chamfered surface 14 is not coplanar with both the first surface 11 and the side surface 13; at least part of the auxiliary structure 32 is located on the first chamfered surface 14.

[0070] It is understandable that by setting the first chamfered surface 14 between the first surface 11 and the side surface 13, the stress concentration problem between the display panel 100 and the cover plate can be effectively improved, and the stress dispersion can be played. At the same time, during the cutting or packaging process, the corner area of ​​the display panel 100 is prone to microcracks due to stress superposition. By setting a stress barrier layer or anti-crack structure on the first chamfered surface 14 between the first surface 11 and the side surface 13, the stress conduction path can be blocked, the risk of fracture of the packaging layer can be reduced, and the preparation yield of the display panel can be improved. In addition, the first chamfered surface 14 can be used to layout key circuit components, such as setting a multi-way decomposition circuit and an electrostatic release circuit, etc., so as to play an electrostatic protection role and solve the signal transmission problem, which is conducive to the narrow frame of the display panel 100.

[0071] Among them, the first chamfered surface 14 is not coplanar with the first surface 11 and the side surface 13, which can be understood as the angle between the first chamfered surface 14 and the first surface 11 is not equal to n*π, and the angle between the first chamfered surface 14 and the side surface 13 is not equal to n*π, where n is an integer. In an optional embodiment, when the first surface 11 and the side surface 13 are perpendicular to each other, the angle between the first chamfered surface 14 and the first surface 11 can be an obtuse angle, and the angle between the first chamfered surface 14 and the side surface 13 can also be an obtuse angle. In this case, the first chamfered surface 14 can be a slope surface, and the angle relationship between the first chamfered surface 14, the first surface 11 and the side surface 13 can be designed according to actual needs, and the embodiment of the present invention does not specifically limit this.

[0072] As a feasible embodiment, taking the first chamfered surface 14 as a sloped surface as an example, when the auxiliary structure 32 is prepared by deposition, evaporation and other processes, if the auxiliary material is provided from the side of the first surface 11 away from the second surface 12, the auxiliary material is more easily attached to the sloped surface, so that the auxiliary structure 32 is at least formed on the first chamfered surface 14, which is beneficial to simplify the preparation process of the auxiliary structure 32.

[0073] As another feasible embodiment, in combination with reference Figure 10 , Figure 11 and Figure 12, when the connection lines 31 and the auxiliary structure 32 are prepared using a dry film photoresist, since the first chamfered surface 14 has a relatively small area, when the dry film photoresist 40 is attached to the display panel 100, because the first chamfered surface 14 is between the first surface 11 and the side surface 13, the pressure on the dry film photoresist 40 attached to the first chamfered surface 14 is relatively large, making the strip-shaped colloid part 401 of the dry film photoresist 40 at the first chamfered surface 14 more likely to deform. At this time, a hollow part 42 can be provided in the area where the strip-shaped colloid part 401 contacts the first chamfered surface 14, so that the strip-shaped colloid part 401 in contact with the first chamfered surface 14 can release the deformation amount into the hollow part 42, improving the risk of disconnection due to the narrow width of the connection line 31 at the first chamfered surface 14 caused by the strip-shaped colloid part 401 in contact with the first chamfered surface 14 squeezing the gap part 402. At the same time, because there is a hollow part 42 in the strip-shaped colloid part 401 in contact with the first chamfered surface 14, when the connection line 31 is formed, the auxiliary structure 32 will be formed at the first chamfered surface 14 through the hollow part 42, so that the connection line 31 can be electrically connected to the first bonding contact 21 after being connected to the auxiliary structure 32 located at the first chamfered surface 14, improving the electrical connection stability and electrical signal transmission reliability of the connection line 31.

[0074] Correspondingly, Figure 13 is a schematic structural diagram of another display panel provided by an embodiment of the present invention, Figure 14 is a schematic side view structure diagram of another display panel provided by an embodiment of the present invention. Refer to Figure 13 and Figure 14 , the display panel 100 further includes a second chamfered surface 15 connected between the side surface 13 and the second surface 12; the second chamfered surface 15 is not coplanar with both the second surface 12 and the side surface 13; at least part of the auxiliary structure 32 is located on the second chamfered surface 15.

[0075] It can be understood that by providing the second chamfered surface 15 between the second surface 12 and the side surface 13, the stress concentration problem between the display panel 100 and the cover plate, etc. can be effectively improved, and the stress dispersion effect can be achieved. At the same time, during the cutting or packaging process, the corner area of the display panel 100 is prone to microcracks due to stress superposition. By providing a stress barrier layer or anti-crack structure on the second chamfered surface 15 between the second surface 12 and the side surface 13, the stress conduction path can be blocked, the risk of package layer fracture can be reduced, and the manufacturing yield of the display panel can be improved. In addition, key circuit components, such as a multi-tap circuit or an electrostatic discharge circuit, etc., can be arranged on the second chamfered surface 15, so that on the premise of playing an electrostatic protection role and solving signal transmission problems, it is beneficial to the narrow border of the display panel 100.

[0076] Among them, the fact that the second chamfered surface 15 is not coplanar with the second surface 12 and the side surface 13 can be understood as that the included angle between the second chamfered surface 15 and the second surface 12 is not equal to n*π, and the included angle between the second chamfered surface 15 and the side surface 13 is not equal to n*π, where n is an integer. In an optional embodiment, when the second surface 12 and the side surface 13 are perpendicular to each other, the included angle between the second chamfered surface 15 and the second surface 12 can be an obtuse angle, and the included angle between the second chamfered surface 15 and the side surface 13 can also be an obtuse angle. At this time, the second chamfered surface 15 can be a slope surface, and the angular relationship between the second chamfered surface 15, the second surface 12 and the side surface 13 can be designed according to actual needs, and the embodiments of the present invention do not make specific limitations in this regard.

[0077] In another feasible embodiment, with reference to Figure 14 and Figure 15 , when the dry film photoresist 40 is used to prepare the connection line 31 and the auxiliary structure 32, since the second chamfered surface 15 has a small area, when the dry film photoresist 40 is attached to the display panel 100, because the second chamfered surface 15 is between the second surface 12 and the side surface 13, the pressure on the dry film photoresist 40 attached to the second chamfered surface 15 is relatively large, making the strip-shaped colloid part 40 of the dry film photoresist 40 at the second chamfered surface 15 more likely to deform. At this time, a hollow part 42 can be provided in the area where the strip-shaped colloid part 401 contacts the second chamfered surface 15, which can cause the strip-shaped colloid part 401 in contact with the second chamfered surface 15 to squeeze the gap part 401, resulting in a smaller width of the connection line 31 at the second chamfered surface 15 and a risk of open circuit. At the same time, because there is a hollow part 42 in the strip-shaped colloid part 401 in contact with the second chamfered surface 15, when the connection line 31 is formed, the auxiliary structure 32 can be formed at the first chamfered surface 14 through the hollow part 42, so that after the connection line 31 is connected to the auxiliary structure 32 at the second chamfered surface 15, it can be electrically connected to the second bonding contact 22, improving the electrical connection stability and electrical signal transmission reliability of the connection line 31.

[0078] It should be noted that in this embodiment, the auxiliary structure 32 can be provided only on the first chamfered surface 14 or the second chamfered surface 15, and in other optional embodiments, as shown in Figure 16 and Figure 17 , the auxiliary structure 32 can also be provided on both the first chamfered surface 14 and the second chamfered surface 15 at the same time, so that after the connection line 31 is connected to the auxiliary structure 32 at the second chamfered surface 15, it can be electrically connected to the second bonding contact 22, and / or, after the connection line 31 is connected to the auxiliary structure 31 at the first chamfered surface 14, it can be electrically connected to the first bonding contact 21, improving the electrical connection stability and electrical signal transmission reliability of the connection line 31.

[0079] Optionally, Figure 18A schematic structural diagram of another display panel provided by an embodiment of the present invention Figure 19 is Figure 18 a schematic side structure diagram of the display panel in Figure 20 A schematic structural diagram of yet another display panel provided by an embodiment of the present invention Figure 21 A schematic structural diagram of still another display panel provided by an embodiment of the present invention. Referring to Figures 18 - 21 , the intersection position of the first chamfered surface 14 and the first surface 11 is the first position 141, the intersection position of the first chamfered surface 14 and the side surface 13 is the second position 142, the intersection position of the second chamfered surface 15 and the second surface 12 is the third position 151, and the intersection position of the second chamfered surface 15 and the side surface 13 is the fourth position 152; the auxiliary structure 32 includes at least one auxiliary contact 320; the setting positions of the auxiliary contacts 320 include at least one of the first position 141, the second position 142, the third position 151, and the fourth position 152.

[0080] Among them, the shape of the auxiliary contact 320 may include at least one of a rhombus, a gourd shape, a spindle shape, and a quasi-circular shape, and can be set according to actual needs, and no specific limitation is made here.

[0081] It can be understood that when preparing the connection line 31 with a dry film photoresist, it is necessary to attach the dry film photoresist to the display panel, or when assembling other functional film layers (such as a protective film) with the display panel, it is necessary to attach other functional film layers to the display panel. During the attachment process, a certain pressure needs to be applied to the display panel. Usually, the pressure applied to the plane is relatively uniform, while when applying pressure to two surfaces with a bending angle, the pressure is easily transmitted to the intersection position of the two surfaces, making the pressure received at this intersection position relatively large.

[0082] Wherein, when the display panel 100 includes a first surface 11, a second surface 12, a side surface 13, a first chamfered surface 14, and a second chamfered surface 15, when attaching a dry film photoresist or other functional film layer to the display panel 100, the joint positions between the first chamfered surface 14 and the first surface 11, between the first chamfered surface 14 and the side surface 13, between the second chamfered surface 15 and the second surface 12, and between the second chamfered surface 15 and the side surface 13 are under greater pressure, resulting in a smaller width of the connection line 31 formed at this position and an increased risk of broken lines. Therefore, by disposing the auxiliary contacts in the auxiliary structure 32 at least at least one of a first position 141, a second position 142, a third position 151, and a fourth position 152, the connection line 31 at least at one of the first position 141, the second position 142, the third position 151, and the fourth position 152 can be connected to the first bonding contact 21 and / or the second bonding contact 22 through the auxiliary contact 320, improving the problem of inaccurate signal transmission due to the breakage of the connection line 31, enhancing the stability and accuracy of the signal transmission of the connection line 31, and thus being beneficial to improving the display effect of the display panel 100.

[0083] It can be understood that on the premise that the auxiliary contacts 320 in the auxiliary structure 32 are at least at least one of a first position 141, a second position 142, a third position 151, and a fourth position 152, the setting positions and the number of the auxiliary contacts 320 can be set according to actual needs and are not specifically limited herein. For the convenience of description, without special limitations, the embodiments of the present invention are exemplified by taking the auxiliary contacts of the auxiliary structure 32 being at least at the second position 142 and the fifth position 152 to illustrate the technical solutions of the embodiments of the present invention.

[0084] Optionally, Figure 22 is a schematic side view of a side structure of a display panel provided by an embodiment of the present invention. As Figure 22 shown, multiple connection lines 31 located on the same side surface 13 are arranged along a first direction X; in the first direction X, the width d2 of the auxiliary structure 32 is smaller than the width d1 of the connection line 31.

[0085] Specifically, by setting the width d2 of the auxiliary structure 32 to be smaller than the width d1 of the connection line 31, the auxiliary structure 32 can have a smaller width d2, thereby reserving a larger space between two adjacent auxiliary structures 32 for arranging the connection line 31, that is, reserving a larger preparation space for the connection line 31, and further forming a connection line 31 with a larger line width, reducing the impedance of the connection line 31, and improving the signal transmission efficiency of the connection line 31.

[0086] It should be noted that the above description only exemplarily illustrates the technical solution of the embodiments of the present invention by taking the auxiliary structure including auxiliary contacts as an example. In the embodiments of the present invention, on the premise that the auxiliary structure can achieve auxiliary connection and ensure that the connecting line has a large line width, the specific shape of the auxiliary structure is not limited in the embodiments of the present invention.

[0087] Optionally, Figure 23 The following is a schematic side view of another display panel provided by an embodiment of the present invention. As Figure 23 shown, the auxiliary structure 32 includes an auxiliary line 324; the auxiliary lines 324 of multiple auxiliary structures 32 located on the same side 13 are arranged along the first direction X; the auxiliary line 324 is located on the side 13 and extends along the second direction Y; the second direction Y is parallel to the arrangement direction of the first surface 11 and the second surface 12, and the second direction Y intersects the first direction X.

[0088] Specifically, by making the auxiliary structure 32 include the auxiliary line 324, when a fault such as breakage or short circuit occurs in the subsequent connecting line 31, the electrical connection path between the connecting line 31 and the first bonding contact 21 and the second bonding contact 22 can be disconnected. Then, one end of the auxiliary line 324 close to the first surface 11 is electrically connected to the first bonding contact 21, and one end of the auxiliary line 324 close to the second surface 12 is electrically connected to the second bonding contact 22, so as to use the auxiliary line 324 to replace the connecting line 31 and achieve the function of electrical signal transmission, improving the repair convenience.

[0089] Exemplarily, Figure 24 The following is a schematic diagram of another display panel provided by an embodiment of the present invention. Referring to Figure 23 and 24 , when a fault such as breakage or short circuit occurs in the connecting line 311, the electrical connection path between the connecting line 311 and the first bonding contact 21 and the second bonding contact 22 can be disconnected. Then, one end of the auxiliary line 3240 adjacent to the connecting line 311 close to the first surface 11 is electrically connected to the first bonding contact 21, and one end of the auxiliary line 3240 close to the second surface 12 is electrically connected to the second bonding contact 22, so as to use the auxiliary line 3240 to replace the connecting line 311 and achieve the function of electrical signal transmission, improving the repair convenience.

[0090] It can be understood that when the connection line 31 is located between two adjacent auxiliary lines 324, in the event of a fault such as a break in the connection line 31, one auxiliary line 324 on one side of the connection line 31 can be used to repair the connection line 31, or two auxiliary lines 324 on both sides of the connection line 31 can be used to repair the connection line 31. That is, one end of the two auxiliary lines 324 close to the first surface 11 is electrically connected to the first bonding contact 21, and one end of the two auxiliary lines 324 close to the second surface 12 is electrically connected to the second bonding contact 22, so as to combine and replace the connection line 31 with the two auxiliary lines 324. While ensuring signal transmission, the line impedance can be reduced and the signal transmission efficiency can be improved.

[0091] Optionally, continue to refer to Figure 23 , in the second direction Y, the length l2 of the auxiliary line 324 is less than the length l1 of the connection line 31.

[0092] Specifically, by setting the length l2 of the auxiliary line 324 in the second direction Y to be less than the length l1 of the connection line 31, when the display panel 100 is fabricated, the connection stability between the connection line 31 and the first bonding contact 21 and the second bonding contact 22 can be ensured. At the same time, it can avoid the risk of short circuit caused by the long auxiliary line 324 coming into contact with the first bonding contact 21, the second bonding contact 22, the signal line, etc. At the same time, as a spare repair line, the auxiliary line 324 can disconnect the connection path between the connection line 31 and the first bonding contact 21 and the second bonding contact 22 when the connection line 31 fails. Conductive materials are prepared between the auxiliary line 324 and the first bonding contact 21, and conductive materials are prepared between the auxiliary line 324 and the second bonding contact 22 by means of etching or transfer printing, etc., so as to connect the first bonding contact 21 and the second bonding contact 22 through the auxiliary line 324, and use the auxiliary line 324 as the connection line 32 to transmit signals, improving the repair efficiency of the display panel 100.

[0093] Optionally, continue to refer to Figure 23 , in the first direction X, the width d4 of the auxiliary line 324 is less than the width d3 of the connection line 31.

[0094] Specifically, by setting the width d4 of the auxiliary line 324 in the first direction X to be less than the width d3 of the connection line 31, the auxiliary line 324 will not occupy a large width space, leaving a large preparation space for the connection line 31, thereby forming a connection line 31 with a large line width, reducing the impedance of the connection line 31, and improving the signal transmission efficiency of the connection line 31.

[0095] Optionally, Figure 25 Another schematic side view structure of the display panel provided by the embodiment of the present invention, as Figure 25As shown, the auxiliary line 324 includes a main body portion 3241 and end portions 3242 located on one side or opposite sides of the main body portion 3241; in the first direction X, the width of the end portion 3242 is smaller than the width of the main body portion 3241.

[0096] Wherein, when the display panel includes a first surface 11, a second surface 12, a side surface 13, a first chamfered surface 14 and a second chamfered surface 15, the end portions 3242 may be located at the first chamfered surface 14 and the second chamfered surface 15. At this time, by setting the width of the end portion 3242 to be smaller than the width of the main body portion 3241, when preparing the auxiliary structure with dry film photoresist, the size of the hollow portion corresponding to the end portion 3242 in the dry film photoresist is smaller. Thus, on the premise of satisfying the deformation release of the dry film photoresist at this position and reducing the extrusion degree on the connection line 31 setting area, enough space can be reserved for the connection line 31 at this position, so that the connection line 31 can have a larger setting width, which is conducive to reducing the impedance of the connection line 31 and improving the signal transmission efficiency of the connection line 31.

[0097] Optionally, Figure 26 is a schematic side structure diagram of another display panel provided by an embodiment of the present invention. As Figure 26 shown, the auxiliary structure 32 further includes auxiliary contacts 320 connected to one end or opposite ends of the auxiliary line 324; among the connected auxiliary contacts 320 and the auxiliary line 324, the width d6 of the auxiliary contact 320 in the first direction X is greater than the width d5 of the auxiliary line 324 in the first direction X.

[0098] In this way, when a fault such as a break occurs in the connection line 31 and the auxiliary structure 32 is used to replace the connection line 31 to achieve signal transmission, by making the auxiliary contact 320 have a larger width d6, the contact width or contact area between the auxiliary contact 320 and the first bonding contact 21 or the second bonding contact 22 can be increased, thereby improving the electrical signal transmission reliability of the auxiliary structure 32 as a repair line replacing the connection line 31 and increasing the repair success rate.

[0099] Exemplarily, Figure 27 is a schematic structure diagram of another display panel provided by an embodiment of the present invention. Referring to Figure 27 , when a fault such as a break or short circuit occurs in the connection line 311, the electrical connection path between the connection line 311 and the first bonding contact 21 and the second bonding contact 22 can be disconnected. Then, the auxiliary contact 320 of the two auxiliary structures 32 adjacent to the connection line 311 and close to the first surface 11 is electrically connected to the part of the connection line 311 that is electrically connected to the first bonding contact 21, and the auxiliary contact 320 of the two adjacent auxiliary structures 32 close to the second surface 12 is electrically connected to the part of the connection line 311 that is electrically connected to the second bonding contact 22, so as to use the auxiliary structure 32 to replace the connection line 311 and increase the repair success rate.

[0100] Based on the same inventive concept, an embodiment of the present invention further provides a method for manufacturing a display panel. Figure 28 FIG. is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present invention, and this method is applicable to manufacturing the display panel provided by the embodiment of the present invention. Figure 29 FIG. is a schematic structural diagram of a process for manufacturing a display panel provided by an embodiment of the present invention. As Figure 28 shown, the method for manufacturing the display panel includes:

[0101] S101. Provide a display substrate.

[0102] Among them, referring to Figure 29 , the display substrate includes a first surface 11, a second surface 12 opposite to the first surface 11, and a side surface 13 connecting the first surface 11 and the second surface 12. A plurality of first bonding contacts 21 are provided on the first surface 11, and a plurality of second bonding contacts 22 are provided on the second surface 12.

[0103] Specifically, the display substrate includes a substrate 16 and a driving circuit layer 17. The driving circuit layer 17 includes pixel circuits arranged in an array, and signal lines electrically connected to each pixel circuit and the first bonding contacts 21. The signal lines may include, for example, at least one of display signal lines such as data signal lines, scan signal lines, and clock signal lines. The signal lines are electrically connected to the pixel circuits to control the working state of the pixel circuits, and further control the pixels to display images. The formation method of the display substrate may include: providing a substrate 16; preparing the driving circuit layer 17 and the first bonding contacts 17 on the surface of the driving circuit layer 17 on one side surface of the substrate 16 through processes such as deposition, etching, and evaporation, and the second bonding contacts 22 on the side of the substrate 16 facing away from the driving circuit layer 17; the light-emitting elements can be directly formed on the surface of the driving circuit layer 17 facing away from the substrate 16 through processes such as evaporation, or bonding terminals are provided on the side of the driving circuit layer 17 facing away from the substrate 16, and the light-emitting elements are bonded to the display substrate through the bonding terminals.

[0104] S102. Form a plurality of connection lines and a plurality of auxiliary structures.

[0105] Among them, the connection lines 31 extend from the first surface 11 through the side surface 13 to the second surface 12; the connection lines 31 are correspondingly connected to the first bonding contacts 21 and the second bonding contacts 22; at least part of the connection lines 31 are located between two adjacent auxiliary structures 32.

[0106] Specifically, the forming methods of the multiple connection lines and the multiple auxiliary structures may include, but are not limited to, processes such as laser etching, pad printing, dry film lithography, etc. The connection lines and the auxiliary structures may be formed under the same process or separately under different processes, and may be specifically designed according to actual needs. The embodiments of the present invention do not make specific limitations thereto.

[0107] In an alternative embodiment, Figure 30 is a flowchart of a method for forming multiple connection lines and multiple auxiliary structures provided by an embodiment of the present invention, Figure 31 is a schematic structural diagram of a process for forming multiple connection lines and multiple auxiliary structures provided by an embodiment of the present invention. Refer to Figure 30 and Figure 31 , the preparation method for forming multiple connection lines and multiple auxiliary structures includes:

[0108] S121. Provide a dry film photoresist.

[0109] Among them, the dry film photoresist 40 includes a plurality of strip-shaped colloid parts 43 and a gap part 41 located between the strip-shaped colloid parts 43, and at least one hollow part 430 is provided on the strip-shaped colloid part 43.

[0110] Specifically, the dry film photoresist may be provided first, and then according to the setting positions of the connection lines 31 and the auxiliary structures 32 on the side surface 13 in the display panel, exposure and development are performed at the corresponding positions in the dry film photoresist to form the gap part 41 and the hollow part 430 where the dry film photoresist is not provided.

[0111] S122. Attach the dry film photoresist from the first surface along the side surface to the second surface so that the gap part exposes the first bonding contact and the second bonding contact.

[0112] Specifically, the dry film photoresist 40 may be attached from the first surface 11 along the side surface 13 to the second surface 12 through a thermal pressing process to avoid generating bubbles and wrinkles. In addition, the gap part 41 can expose the first bonding contact 21 and the second bonding contact 22, so that after the connection line 31 is formed at the gap part 41, the connection line 31 can cover the first bonding contact 21 and the second bonding contact 22, improving the contact area between the connection line 31 and the first bonding contact 21 and the second bonding contact 22, and further improving the reliability of signal transmission of the connection line 31.

[0113] S123. Use the dry film photoresist as a mask plate to form connection lines at the gap part and form auxiliary structures at the hollow part.

[0114] Specifically, using the dry film photoresist 40 as a mask plate, a conductive material is coated at the gap part 41 and the hollow part 430, so that the connection line 31 can be formed at the gap part 41 and the auxiliary structure 32 can be formed at the hollow part 430.

[0115] S124. Use a stripping solution to remove the dry film photoresist attached to the display substrate.

[0116] Specifically, the stripping solution includes a strongly alkaline solution, etc., which can be set according to actual needs and will not be specifically limited here. After the preparation of the connection lines and the auxiliary structure is completed, there is no need to retain the photoresist on the display substrate. At this time, the dry film photoresist can be removed by the corresponding stripping solution.

[0117] Among them, since a plurality of hollow portions 430 are provided in the strip-shaped colloid portion 43, when using the stripping solution to remove the dry film photoresist, the contact area between the stripping solution and the dry film photoresist can be increased, the stripping rate of the dry film photoresist can be increased, and thus the preparation efficiency of the display panel can be improved.

[0118] The technical solution of the present invention provides a structure including a plurality of strip-shaped colloid portions and gap portions located between the strip-shaped colloid portions. At least one hollow portion is provided on the strip-shaped colloid portion. After the dry film photoresist is attached from the first surface to the second surface along the side surface, the deformation generated by the dry film photoresist towards the gap portion can be released to the hollow portion, ensuring that there is a sufficiently large space for preparing the connection lines in the gap portion. At the same time, the gap portion can expose the first bonding contact and the second bonding contact. After forming the connection lines at the gap portion with the dry film photoresist as the mask, the connection lines can have a large contact area with the first bonding contact and the second bonding contact, thereby improving the reliability of signal transmission of the connection lines. In addition, an auxiliary structure can be formed at the hollow portion, and this auxiliary structure can provide auxiliary connection for the connection lines or, when the connection lines fail, can replace the connection lines for signal transmission, which is beneficial to reducing the repair difficulty of the connection lines of the display panel and improving the display effect of the display panel.

[0119] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes a plurality of display panels provided in any embodiment of the present invention. Therefore, this display device has the technical features of the display panel provided in the embodiment of the present invention and can achieve the beneficial effects of the display panel provided in the embodiment of the present invention. The same parts can refer to the description of the display panel provided in the embodiment of the present invention above and will not be elaborated here.

[0120] Figure 32 Shown is a schematic structural diagram of a display device provided in an embodiment of the present invention. As Figure 32 shown, the display device 200 includes 4 display panels 100 provided by the present invention, and the 4 display panels are spliced to form the display device 200. In this way, the number of display panels 100 included in the display device 200 can be set according to actual needs, so that the display device 200 can achieve different sizes to adapt to different display requirements and improve the practicability of the display device 200.

[0121] Specifically, two adjacent display panels 100 can be connected through the second binding contacts. Alternatively, the second binding contacts of each display panel 100 can be used to bind a driving chip or a flexible circuit board, and two adjacent display panels 100 can be cascaded through the driving chip or the flexible circuit board, so that when each display panel 100 is working, the display device 200 can present a continuous display screen, improving the display effect. The display device 200 can be any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiments of the present invention do not make special limitations on this.

[0122] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, combinations with each other, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, Comprising: A first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface; The first surface is provided with a plurality of first bonding contacts, and the second surface is provided with a plurality of second bonding contacts; The display panel further includes a plurality of connection lines and a plurality of auxiliary structures; the connection lines extend from the first surface through the side surface to the second surface; the connection lines correspondingly connect the first bonding contacts and the second bonding contacts; at least part of the connection lines are located between two adjacent auxiliary structures.

2. The display panel according to claim 1, wherein, Further comprising: A first chamfered surface connected between the side surface and the first surface; The first chamfered surface is not coplanar with either the first surface or the side surface; At least part of the auxiliary structure is located on the first chamfered surface; And / or, A second chamfered surface connected between the side surface and the second surface; The second chamfered surface is not coplanar with either the second surface or the side surface; at least part of the auxiliary structure is located on the second chamfered surface.

3. The display panel according to claim 2, wherein The intersection position of the first chamfered surface and the first surface is the first position, the intersection position of the first chamfered surface and the side surface is the second position, the intersection position of the second chamfered surface and the second surface is the third position, and the intersection position of the second chamfered surface and the side surface is the fourth position; The auxiliary structure includes at least one auxiliary contact; the setting positions of the auxiliary contacts include at least one of the first position, the second position, the third position, and the fourth position.

4. The display panel according to claim 1, wherein A plurality of the connection lines located on the same side surface are arranged in a first direction; In the first direction, the width of the auxiliary structure is smaller than the width of the connection line.

5. The display panel according to claim 1, wherein The auxiliary structure includes auxiliary lines; the auxiliary lines of a plurality of the auxiliary structures located on the same side surface are arranged in the first direction; the auxiliary lines are located on the side surface and extend in a second direction; the second direction is parallel to the arrangement direction of the first surface and the second surface, and the second direction intersects with the first direction.

6. The display panel according to claim 5, wherein, In the second direction, the length of the auxiliary line is smaller than the length of the connection line.

7. The display panel according to claim 5, wherein, In the first direction, the width of the auxiliary line is smaller than the width of the connection line.

8. The display panel according to claim 5, characterized in that The auxiliary line includes a main body portion and end portions located on one side or opposite sides of the main body portion; in the first direction, the width of the end portion is smaller than the width of the main body portion.

9. The display panel according to claim 5, wherein The auxiliary structure further includes auxiliary contacts connected to one end or opposite ends of the auxiliary line; Among the connected auxiliary contacts and the auxiliary line, the width of the auxiliary contact in the first direction is greater than the width of the auxiliary line in the first direction.

10. The display panel according to claim 1, wherein The auxiliary structure and the connection line are made of the same material.

11. A method for preparing a display panel, characterized in that, Comprising: Providing a display substrate; The display substrate includes a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface; The first surface is provided with a plurality of first bonding contacts, and the second surface is provided with a plurality of second bonding contacts; Forming a plurality of connection lines and a plurality of auxiliary structures; The connecting line extends from the first surface, through the side surface, to the second surface; the connecting line correspondingly connects the first bonding contact and the second bonding contact; at least a part of the connecting line is located between two adjacent auxiliary structures.

12. The method for manufacturing a display panel according to claim 11, wherein Forming a plurality of connecting lines and a plurality of auxiliary structures, including: Providing a dry film photoresist; the dry film photoresist includes a plurality of strip-shaped colloid parts and gap parts located between the strip-shaped colloid parts; at least one hollow part is provided on the strip-shaped colloid parts; Attaching the dry film photoresist from the first surface along the side surface to the second surface, so that the gap parts expose the first bonding contact and the second bonding contact; Using the dry film photoresist as a mask plate, forming the connecting line at the gap part and forming the auxiliary structure at the hollow part.

13. The manufacturing method of the display panel according to claim 12, characterized in that, After using the dry film photoresist as a mask plate to form the connecting line at the gap part and form the auxiliary structure at the hollow part, it further includes: Removing the dry film photoresist attached to the display substrate by using a stripping solution.

14. A display device, characterized in that, Including: A plurality of display panels according to any one of claims 1-10.

Images