Display panel

Abstract

The utility model discloses a display panel which comprises at least one display unit, the display unit comprises a substrate, the substrate comprises a first surface, a second surface and at least one film coating side surface, the first surface is opposite to the second surface, the film coating side surface is connected between the first surface and the second surface, and the first surface is opposite to the second surface. The coating side surface is used for arranging side surface wires, and the area, close to the coating side surface, of the first surface is provided with at least two grooves; the light-emitting module is located on the first surface, and the orthographic projection of the light-emitting module on the first surface is not overlapped with the orthographic projection of the groove on the first surface; the at least two binding terminals are embedded into the at least two grooves in a one-to-one correspondence mode, and the at least two binding terminals are electrically connected with the light emitting module; and the at least two connecting terminals are located on the second surface, and the at least two connecting terminals are in one-to-one correspondence with the at least two binding terminals. According to the display panel, the performance and the manufacturing yield can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, and particularly relates to a display panel. Background Art

[0002] At present, Mini-LED (sub-millimeter light-emitting diode) display devices and Micro-LED (micro light-emitting diode) display devices are widely used due to their advantages such as self-luminescence, high brightness, high contrast, high resolution and color saturation, long service life, fast response speed, and low power consumption.

[0003] Mini-LED display devices and Micro LED display devices are mainly applied to large-size display devices by means of splicing. In order to achieve seamless splicing, a back-bonding technology is usually adopted to reduce the splicing width. At present, glass-based Mini-LED or Micro LED borderless splicing screens mainly adopt a side-wiring method to connect the bonding terminals on the front side of the substrate to the connection terminals on the back side of the substrate, and the bonding terminals and the connection terminals are located in the non-display area of the splicing screen.

[0004] When a conventional side structure is used to make side-wiring during the side-coating process, it is necessary to coat and protect the devices in the display area of the splicing screen. In order to ensure the complete protection of the devices in the display area by the protective film, the protective film may cover a part of the bonding terminal adjacent to the display area. Due to the height step difference problem of the bonding terminal, the protective film on the bonding terminal side cannot be completely attached to the substrate, and there is a gap between the bonding terminals. During the side-coating process, metal will enter the gap between the bonding terminals under the protective film, which will cause metal residue and lead to a short circuit between the bonding terminals, affecting the display performance and production yield of the splicing screen. Summary of the Utility Model

[0005] The utility model provides a display panel, which can improve the performance and production yield.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A display panel includes at least one display unit, and the display unit includes:

[0008] A substrate, the substrate includes a first surface, a second surface, and at least one coated side surface, the first surface and the second surface face away from each other, the coated side surface is connected between the first surface and the second surface, side-wiring is arranged on the coated side surface, and the area of the first surface adjacent to the coated side surface has at least two grooves;

[0009] A light-emitting module, the light-emitting module being located on the first surface, and the orthographic projection of the light-emitting module on the first surface having no overlap with the orthographic projection of the groove on the first surface;

[0010] At least two bonding terminals, the at least two bonding terminals being respectively embedded in the at least two grooves one by one, and the at least two bonding terminals being electrically connected to the light-emitting module;

[0011] At least two connection terminals, the at least two connection terminals being located on the second surface, and the at least two connection terminals corresponding to the at least two bonding terminals one by one.

[0012] Optionally, the depth of the groove in the first direction is greater than or equal to the thickness of the bonding terminal in the first direction, and the first direction is the arrangement direction of the first surface and the second surface.

[0013] Optionally, the depth of the groove in the first direction is 10 micrometers to 15 micrometers.

[0014] Optionally, the shape of the orthographic projection of the groove on the first surface is rectangular, circular or elliptical.

[0015] Optionally, the area of the first surface of the substrate adjacent to the coated side has a plurality of grooves, and the plurality of grooves are arranged at equal intervals along the extension direction of the coated side;

[0016] The area of the second surface of the substrate adjacent to the coated side has a plurality of connection terminals, and the plurality of connection terminals are arranged corresponding to the plurality of grooves one by one.

[0017] Optionally, it further includes a coating layer, and the coating layer includes at least two side traces, and the at least two side traces correspond to the at least two grooves one by one;

[0018] The side trace includes a first end, an intermediate section and a second end. The first end is located on the first surface and covers a part of the groove adjacent to the coated side. The second end is located on the second surface and covers the connection terminal. The intermediate section is located on the coated side, and both ends of the intermediate section are respectively connected to the first end and the second end, so that the bonding terminal in the groove is electrically connected to the corresponding connection terminal.

[0019] Optionally, it further includes an insulating coating, and the insulating coating covers the side of the coating layer facing away from the substrate.

[0020] Optionally, the coated side includes a first side, a second side and a third side;

[0021] The first side is perpendicular to the first surface and the second surface. The first side is connected to the first surface through the second side, and the angle between the second side and the first surface is an obtuse angle. The angle between the second side and the first side is also an obtuse angle;

[0022] The first side is connected to the second surface through the third side. The angle between the third side and the second surface is an obtuse angle, and the angle between the third side and the first side is an obtuse angle.

[0023] Optionally, the substrate is a glass substrate.

[0024] Optionally, it includes a plurality of display units, and the plurality of display units are spliced;

[0025] Among any two adjacent display units, the coated side of one display unit faces the coated side of the other display unit; or,

[0026] Among any two adjacent display units, the coated side of one display unit does not face the coated side of the other display unit.

[0027] In the display panel provided by the embodiment of the present invention, when it is necessary to perform film covering protection on the first surface of the substrate, the first protective film can cover the light-emitting module on the first surface of the substrate to protect the light-emitting module. In order to ensure the complete coverage of the light-emitting module by the first protective film, the edge of the first protective film may cover a part of the bonding terminal adjacent to the light-emitting module. Since there are at least two grooves on the first surface of the substrate, at least two bonding terminals are respectively embedded in at least two grooves, and there is no step difference between the bonding terminals and the first surface of the substrate. The edge of the first protective film can be completely attached to the first surface of the substrate. During the subsequent coating process on the coated side of the substrate and the etching of the formed coating metal layer, it can be ensured that there is no metal residue between adjacent bonding terminals, avoiding short circuits between adjacent two bonding terminals, thereby improving the performance and manufacturing yield of the display panel. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of a display panel provided in the related art;

[0029] Figure 2 It is a schematic diagram of film covering protection on the display panel in the related art;

[0030] Figure 3 It is a cross-sectional view of a display panel in the related art;

[0031] Figure 4 It is a schematic structural diagram of a display panel provided by the embodiment of the present invention;

[0032] Figure 5 A schematic plan view of a display panel provided by an embodiment of the present utility model;

[0033] Figure 6 A schematic diagram of a display panel film provided by an embodiment of the present utility model;

[0034] Figure 7 For Figure 6 A cross-sectional schematic view at PP in

[0035] Figure 8 A schematic diagram of a display panel film provided by an embodiment of the present utility model;

[0036] Figure 9 For Figure 8 A cross-sectional schematic view at QQ in

[0037] Figure 10 A schematic plan view of a display panel provided by an embodiment of the present utility model;

[0038] Figure 11 A schematic structural view of a display panel provided by an embodiment of the present utility model;

[0039] Figure 12 A plan view of a display panel provided by an embodiment of the present utility model;

[0040] Figure 13 Another schematic structural view of a display panel provided by an embodiment of the present utility model;

[0041] Figure 14 A schematic structural view of a display device provided by an embodiment of the present utility model;

[0042] Figure 15 A flowchart of a manufacturing method of a display panel provided by an embodiment of the present utility model;

[0043] Figure 16 A schematic diagram of a manufacturing process of a display panel provided by an embodiment of the present utility model.

[0044] Icon:

[0045] 01 - Substrate; 02 - Driving layer; 03 - Light-emitting unit; 04 - Bonding terminal; 05 - Connection terminal; 06 - Side-walk line; 07 - First protective film; 08 - Coated metal layer; 09 - Metal residue;

[0046] 1 - Substrate; a - First surface; b - Second surface; c - Side surface; c11 - First side surface; c12 - Second side surface; c13 - Third side surface; 11 - Groove; 2 - Driving layer; 3 - Light-emitting unit; 4 - Bonding terminal; 5 - Connection terminal; 6 - Coated metal layer; 61 - Side trace; 611 - First end; 612 - Second end; 613 - Intermediate section; 101 - First protective film; 102 - Second protective film; 100 - Display unit;

[0047] AA - Display area; BB - Non-display area. Detailed implementation manner

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] In the related art, large-size display devices can be formed by splicing multiple splicing display panels, and the splicing display panels can be Micro LED or Mini LED borderless splicing screens. Among them, a structural schematic diagram of a splicing display panel can be as Figure 1 shown Figure 1 The splicing screen in the figure includes a substrate 01, a driving layer 02, a plurality of light-emitting units 03, a plurality of bonding terminals 04, a plurality of connection terminals 05, and a plurality of side traces 06.

[0050] Specifically, the substrate 01 has a first surface and a second surface. The first surface has a display area and a non-display area, and the non-display area can be located on at least one side of the display area. The driving layer 02 is located in the display area of the first surface. A plurality of light-emitting units 03 are bonded to the driving layer 02. A plurality of bonding terminals 04 are located in the non-display area of the first surface. The plurality of bonding terminals 04 are electrically connected to the plurality of light-emitting units 03 through the driving layer 02. The plurality of connection terminals 05 correspond to the plurality of bonding terminals 04 one by one. The plurality of connection terminals 05 are located on the second surface of the substrate 01. The plurality of side traces 06 correspond to the plurality of bonding terminals 04 one by one. The bonding terminal 04 is electrically connected to the corresponding connection terminal 05 through the corresponding side trace 06.

[0051] When performing the side coating process to make side traces, it is necessary to first cover and protect the display area, as Figure 2 and Figure 3As shown in the figure, the display area on the first surface of the substrate 01 is covered with a first protective film 07. In order to achieve a complete coverage of the display area by the first protective film 07, the first protective film 07 needs to cover a part of the bonding terminals 04. Then, a coating metal layer 08 is formed on the side of the display panel, and the coating metal layer 08 is etched to form a plurality of side traces 06.

[0052] Due to the height step difference between the bonding terminals 04 and the substrate 01, the first protective film on the first surface cannot completely adhere to the substrate 01, and there are gaps between the bonding terminals 04. During the process of forming the coating metal layer 08 by the side coating process, the coating metal will enter the gaps between the bonding terminals 04 under the first protective film 07, as Figure 3 shown in the figure. This will cause metal residues 09 between the bonding terminals 04, resulting in a short circuit between the bonding terminals 04 and affecting the display performance and production yield of the splicing screen.

[0053] To solve the above technical problems, the present utility model provides a display panel, as Figure 4 and Figure 5 shown in the figure, which includes at least one display unit 100. The display unit 100 includes:

[0054] A substrate 1, which includes a first surface a, a second surface b, and at least one coating side c1. The first surface a and the second surface b face away from each other, the coating surface c1 is connected between the first surface a and the second surface b, and the side traces are arranged on the coating side c1. The area of the first surface a adjacent to the coating side c1 has at least two grooves 11;

[0055] A light-emitting module, which is located on the first surface. The orthographic projection of the light-emitting module on the first surface does not overlap with the orthographic projection of the groove on the first surface;

[0056] At least two bonding terminals 4, which are embedded in at least two grooves 11 in a one-to-one correspondence, and at least two bonding terminals 4 are electrically connected to the light-emitting module;

[0057] At least two connection terminals 5, which are located on the second surface b, and at least two connection terminals 5 correspond to at least two bonding terminals 4 in a one-to-one correspondence.

[0058] In the display panel provided by the embodiment of the present utility model, when it is necessary to perform film covering protection on the first surface a of the substrate 1, the first protective film 101 can cover the light-emitting module on the first surface a of the substrate 1 to protect the light-emitting module. In order to ensure the complete coverage of the light-emitting module by the first protective film 101, the edge of the first protective film 101 may cover a part of the bonding terminal 4 adjacent to the light-emitting module, as Figure 6As shown, since the first surface a of the substrate 1 has at least two grooves 11, at least two bonding terminals 4 are respectively embedded in at least two grooves 11, and there is no step difference between the bonding terminals 4 and the first surface a of the substrate 1. As Figure 7 shown, the edge of the first protective film 101 can be completely attached to the first surface a of the substrate 1. During the subsequent coating process on the coated side c1 of the substrate 1 and the etching of the formed coating metal layer 6, it can be ensured that there is no metal residue between adjacent bonding terminals 4, avoiding short - circuit between two adjacent bonding terminals 4, thereby improving the performance and manufacturing yield of the display panel.

[0059] Specifically, as Figure 4 and Figure 5 shown, on the first surface a of the substrate 1, the area where the light - emitting module is located can be defined as the display area AA, and the area where the grooves 11 are located can be defined as the non - display area BB. When covering the first surface a of the substrate 1 with a protective film, it is necessary to make the first protective film 101 completely cover the display area AA, as Figure 5 and Figure 6 shown. Since the distance between the display area AA and the non - display area BB is reduced, in order to ensure, the edge of the first protective film 101 will cover the part of the bonding terminal 4 in the groove 11 adjacent to the display area AA.

[0060] Specifically, as Figure 8 and Figure 9 shown, Figure 8 is a schematic diagram of forming a coating metal layer 6 through a coating process after covering the display area AA of the first surface a of the substrate 1, Figure 9 is a cross - sectional view of the display unit after the coating metal layer 6 is formed.

[0061] It can be seen from Figure 9 that since the bonding terminals 4 are embedded in the grooves 11 on the substrate 1 and there is no step difference between the bonding terminals 4 and the first surface a of the substrate 1, the first protective film 101 can be completely attached to the first surface a of the substrate 1, so that there is no gap between two adjacent bonding terminals 4. During the coating process on the coated side c1, there will be no metal residue between the two bonding terminals 4, thereby being able to avoid the problem of short - circuit caused by metal residue.

[0062] In the embodiment of the present utility model, as Figure 4 and Figure 5 shown, the light - emitting module may include a driving layer 2 and a plurality of light - emitting units 3. The driving layer 2 is located on the first surface a of the substrate 1, and the plurality of light - emitting units 3 are located on the side of the driving layer 2 away from the substrate 1. At least two bonding terminals 4 are electrically connected to the plurality of light - emitting units 3 through the driving layer 2.

[0063] Among them, the multiple light-emitting units 3 may include at least three light-emitting units 3 with different light-emitting colors. For example, the multiple light-emitting units 3 may include red light-emitting units 3, green light-emitting units 3, or blue light-emitting units 3.

[0064] Specifically, as Figure 5 shown, the multiple light-emitting units 3 may be arranged in an array. Along the row direction in which the multiple light-emitting units 3 are arranged, three adjacent light-emitting units 3 may form a pixel unit, and in each pixel unit, the red light-emitting units 3, green light-emitting units 3, or blue light-emitting units 3 are arranged in sequence. Along the column direction in which the multiple light-emitting units 3 are arranged, the light-emitting colors of the light-emitting units 3 in one column may be the same.

[0065] Among them, the light-emitting unit 3 may be a Micro LED or a Mini LED, which is not shown here and is determined according to the actual situation.

[0066] Specifically, the driving layer 2 may have multiple thin-film transistor (TFT) switch units corresponding one-to-one to the multiple light-emitting units 3. The TFT switch unit may include a thin-film transistor, a capacitor, etc. Each TFT switch unit may provide a display driving signal for the corresponding light-emitting unit 3 to control the lighting state of the light-emitting unit 3. The bonding terminal 4 may be electrically connected to the TFT switch unit to provide a switching driving signal for the TFT switch unit.

[0067] In the embodiment of the present utility model, as Figure 5 shown, the area of the first surface a of the substrate 1 adjacent to the coating side surface c1 has multiple grooves 11, and the multiple grooves 11 are arranged at equal intervals along the extending direction of the coating side surface c1; the area of the second surface of the substrate 1 adjacent to the coating side surface c1 has multiple connection terminals 5, and the multiple connection terminals 5 are arranged corresponding one-to-one to the multiple grooves 11, which can facilitate coating on the coating side surface c1, so that the bonding terminal 4 in the groove 11 on the first surface a is electrically connected to the connection terminal 5 on the second surface b.

[0068] Specifically, the shape of the substrate 1 may be a polygon, for example, a triangle or a rectangle, etc., which is not limited here and is determined according to the actual situation. As Figure 5 shown, the shape of the substrate 1 may be a rectangle, and the substrate 1 has four side surfaces c, and at least one of the four side surfaces c is a coating side surface c1.

[0069] Specifically, one of the four side surfaces c of the substrate 1 may have a first side surface c1, and the groove 11 is arranged adjacent to one first side surface c1. As Figure 5 shown, or it may also have at least two first side surfaces c1. As Figure 10 shown, the multiple grooves 11 may be divided into two parts, and the two parts of the grooves 11 are respectively arranged adjacent to the two first side surfaces c1, which is not limited here and is determined according to the actual situation.

[0070] As Figure 5 and Figure 10 shown, multiple light-emitting units 3 are arranged in an array, and multiple grooves 11 can be arranged at equal intervals along the row direction or column direction of the multiple light-emitting units 3. The structure is simple and easy to manufacture.

[0071] For example, multiple grooves 11 can be arranged along the row direction of the multiple light-emitting units 3. The number of the multiple grooves 11 can be equal to the number of rows of the light-emitting units 3. The bonding terminals 4 in each groove 11 can be electrically connected to the TFT switching units corresponding to one row of light-emitting units 3 through signal lines. The switching drive signals are provided to one row of TFT switching units through the bonding terminals 4 to control the states of each TFT switching unit, and further to control the states of each light-emitting unit 3.

[0072] Or, as Figure 5 shown, multiple grooves 11 can also be arranged along the column direction of the multiple light-emitting units 3. The number of the multiple grooves 11 can be equal to the number of columns of the light-emitting units 3. The bonding terminals 4 in each groove 11 can be electrically connected to the TFT switching units corresponding to one column of light-emitting units 3 through signal lines. The switching drive signals are provided to one column of TFT switching units through the bonding terminals 4 to control the states of each TFT switching unit, and further to control the states of each light-emitting unit 3.

[0073] Or, as Figure 10 shown, multiple light-emitting units 3 are arranged in an array. A part of the grooves 11 are arranged along the row direction of the multiple light-emitting units 3. The number of this part of the grooves 11 can be the same as the number of rows of the light-emitting units 3. The bonding terminals 4 in the grooves 11 are electrically connected to the TFT switching units corresponding to one row of light-emitting units 3. And another part of the grooves 11 are arranged along the column direction of the multiple light-emitting units 3. The number of this part of the grooves 11 can be the same as the number of columns of the light-emitting units 3. The bonding terminals 4 in the grooves 11 are electrically connected to the TFT switching units corresponding to one column of light-emitting units 3. The two bonding terminals 4 connected to one TFT switching unit can provide the switching drive signals to the TFT switching unit to control the states of each TFT switching unit, and further to control the states of each light-emitting unit 3.

[0074] In the embodiment of the present utility model, the depth of the groove 11 along the first direction can be greater than or equal to the thickness of the bonding terminal 4 along the first direction, and the first direction is the arrangement direction of the first surface a and the second surface b. This can ensure that the bonding terminal 4 is completely embedded in the groove 11. When the display panel is covered with a film for protection, it can better make the edge of the first protective film 101 fit completely with the first surface a of the substrate 1.

[0075] Specifically, the depth of the groove 11 in the first direction can be 10 micrometers to 15 micrometers, and the thickness of the bonding terminal 4 in the first direction can be equal to the depth of the groove 11 in the first direction. The structure is simple and easy to manufacture.

[0076] Specifically, the shape of the positive projection of the groove 11 on the first surface a can be a rectangle, a circle, an ellipse, etc. The shape of the bonding terminal 4 embedded in the groove 11 is the same as the shape of the groove 11. The specific shape of the groove 11 is not limited here and is determined according to the actual situation. For example, as Figure 5 shown, the shape of the groove 11 is a rectangle, and the shape of the bonding terminal 4 is correspondingly a rectangle.

[0077] In the embodiment of the present utility model, a coating layer may further be included. The coating layer includes at least two side traces 61, and the at least two side traces 61 correspond to the at least two grooves 11 one by one; the side trace 61 includes a first end 611, a middle section 613, and a second end 612, as Figure 11 shown;

[0078] wherein, as Figure 12 shown, the first end 611 is located on the first surface a of the substrate and covers a part of the groove 11 adjacent to the coating side c1; the second end 612 is located on the second surface b of the substrate and covers the connection terminal 5, and the middle section 613 is located on the coating side c1, and both ends of the middle section 613 are respectively connected to the first end 611 and the second end 612.

[0079] Specifically, after the side coating process is performed on the coating side c1 of the display panel, the formed coating metal layer 6 can be etched to form the side traces 61 corresponding to the bonding terminals 4 one by one. Through the side traces 61, the bonding terminals 4 on the first surface a can be electrically connected to the corresponding connection terminals 5 on the second surface b.

[0080] Specifically, as Figure 4 and Figure 9 shown, since no components are provided in the area of the second surface b of the substrate 1 opposite to the display area AA of the first surface a, when the substrate 1 is covered with a protective film, a second protective film 102 can be attached to the second surface b of the substrate 1, and the second protective film 102 may not cover the connection terminal 5. In this way, during the subsequent side coating process, the coating metal layer 6 can completely cover the connection terminal 5. Then, when the coating metal layer 6 is etched to form the side traces 61, the side traces 61 can be better connected to the connection terminal 5.

[0081] In an embodiment of the present utility model, the main control unit of the display unit may be disposed on the side of the second surface b of the substrate 1 away from the first surface a. The main control unit may be electrically connected to a plurality of connection terminals 5, and the display signal output by the main control unit may be transmitted to the driving layer 2 through the connection terminals 5, the side traces 61, and the bonding terminals 4, and the lighting states of a plurality of light-emitting units 3 may be controlled through the driving layer 2.

[0082] Specifically, the display unit further includes an insulating coating, and the insulating coating may cover the side of the coating layer away from the substrate, which can prevent short circuits from occurring when the coated sides of the display unit are spliced with the coated sides of other display units.

[0083] In an embodiment of the present utility model, as Figure 13 shown, the coated side c1 may include a first side c11, a second side c12, and a third side c13;

[0084] Among them, the first side c11 is perpendicular to the first surface a and the second surface b. The first side c11 is connected to the first surface a through the second side c12. The angle between the second side c12 and the first surface a is an obtuse angle, and the angle between the second side c12 and the first side c11 is an obtuse angle, which can enable the side trace 61 to smoothly route at the connection between the coated side c1 and the first surface a, and can prevent the side trace 61 from breaking at the connection between the coated side c1 and the first surface a;

[0085] In addition, the first side c11 is connected to the second surface b through the third side c13. The angle between the third side c13 and the second surface b is an obtuse angle, and the angle between the third side c13 and the first side c12 is an obtuse angle, which can enable the side trace 61 to smoothly route at the connection between the coated side c1 and the second surface b, and can prevent the side trace 61 from breaking at the connection between the coated side c1 and the second surface b.

[0086] In an embodiment of the present utility model, the substrate 1 may be a glass substrate 1 or a substrate of other materials, which is not limited here and is determined according to the actual situation.

[0087] In an embodiment of the present utility model, the display panel may include a plurality of display units 100, and the plurality of display units 100 may be spliced to form a large-size display screen.

[0088] As Figure 14 shown, four display units 100 are spliced to form a large-size display screen. Optionally, the number of display units 100 is not limited here and is determined according to the actual situation.

[0089] Among them, in any two adjacent display units 100, the coated side c1 of one display unit 100 may be opposite to the coated side c1 of the other display unit 100;

[0090] Alternatively, in any two adjacent display units 100, the coated side surface c1 of one display unit 100 is not opposite to the coated side surface c1 of the other display unit, as Figure 14 shown, which can reduce the splicing border at the splicing position of the two display units 100 and improve the user experience.

[0091] Specifically, the splicing form of multiple display units is not limited here and is determined according to the actual situation.

[0092] The embodiment of the present utility model further provides a manufacturing method of a display panel for manufacturing any one of the display panels in the above technical solutions. The display panel includes at least one display unit, as Figure 15 shown, the specific steps of manufacturing the display unit may include:

[0093] S1501: Provide a substrate. The substrate includes a first surface, a second surface, and at least one coated side surface. The first surface and the second surface face away from each other, and the coated side surface is connected between the first surface and the second surface; specifically, the substrate may be a glass substrate;

[0094] S1502: Form a light-emitting module on the first surface of the substrate;

[0095] S1503: Form at least two connection terminals in the area of the second surface of the substrate adjacent to the coated side surface. The orthographic projection of the connection terminals on the first surface does not overlap with the orthographic projection of the light-emitting module on the first surface; specifically, a metal layer may be formed on the second surface of the substrate, and then the metal layer is etched to form at least two connection terminals;

[0096] S1504: Form at least two grooves in the area of the first surface of the substrate adjacent to the coated side surface. The at least two grooves correspond to the at least two connection terminals one by one; specifically, the grooves may be formed on the first surface of the substrate by means of a metal mask;

[0097] S1505: Deposit and form at least two bonding terminals in the at least two grooves on the first surface of the substrate; specifically, the bonding terminals may be prepared by physical vapor deposition (PVD), atomic layer deposition (ALD), magnetron sputtering deposition (MOCVD), etc.

[0098] Specifically, the display panel may further include at least two side traces. The process of forming the side traces may include:

[0099] S1506: Attach a first protective film to the first surface of the substrate and attach a second protective film to the second surface of the substrate. The first protective film covers the light-emitting module, and the edge of the first surface covers one side of the bonding terminal adjacent to the light-emitting module. The second protective film covers the area of the second surface corresponding to the light-emitting module, and the multiple connection terminals are exposed outside the second protective film;

[0100] S1507: A coating metal layer is formed on the coated side of the substrate, and the coating metal layer connects the bonding terminals on the first surface of the substrate to the connection terminals on the second surface of the substrate; specifically, the coating metal layer can be formed by physical vapor deposition (PVD), atomic layer deposition (ALD), magnetron sputtering deposition (MOCVD), etc.

[0101] For example, as Figure 16 shown, the substrate is covered and protected by a first protective film 101 and a second protective film 102; a coating metal layer is deposited by magnetron sputtering through a target source, and the target source can include a positive target source 92 opposite to the coated side of the substrate, a side target source 91 opposite to the bonding terminals on the first surface, and a side target source 93 opposite to the connection terminals on the second surface.

[0102] S1508: The coating metal layer is etched to form patterns of at least two bonding terminals, at least two connection terminals, and at least two side traces; specifically, the patterns of the bonding terminals, connection terminals, and side traces can be etched by a laser engraving process.

[0103] S1509: The first protective film and the second protective film are peeled off to form a display unit.

[0104] In the above method for manufacturing a display panel, when the first protective film is attached to the first surface of the substrate, the first protective film needs to completely cover the light-emitting module. In this way, the edge of the first protective film needs to cover the part of the bonding terminals adjacent to the light-emitting module. Since the bonding terminals are embedded in the grooves of the substrate and there is no step difference between the bonding terminals and the first surface of the substrate, the edge of the first protective film can be completely attached to the first surface of the substrate. During the subsequent side coating process on the side of the substrate and the etching of the formed coating metal layer, metal residues between two adjacent bonding terminals can be avoided, thereby improving the performance and manufacturing yield of the display panel.

[0105] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A display panel, characterized in that, Comprising at least one display unit, the display unit comprising: A substrate, the substrate comprising a first surface, a second surface, and at least one coated side surface, the first surface and the second surface facing away from each other, the coated side surface being connected between the first surface and the second surface, side traces being arranged on the coated side surface, and at least two grooves being provided in a region of the first surface adjacent to the coated side surface; A light-emitting module, the light-emitting module being located on the first surface, and a positive projection of the light-emitting module on the first surface having no overlap with a positive projection of the groove on the first surface; At least two bonding terminals, the at least two bonding terminals being respectively embedded in the at least two grooves one by one, and the at least two bonding terminals being electrically connected to the light-emitting module; At least two connection terminals, the at least two connection terminals being located on the second surface, and the at least two connection terminals corresponding to the at least two bonding terminals one by one.

2. The display panel according to claim 1, wherein A depth of the groove in a first direction is greater than or equal to a thickness of the bonding terminal in the first direction, the first direction being an arrangement direction of the first surface and the second surface.

3. The display panel according to claim 2, wherein The depth of the groove in the first direction is 10 micrometers to 15 micrometers.

4. The display panel according to claim 2, wherein A shape of a positive projection of the groove on the first surface is rectangular, circular, or elliptical.

5. The display panel according to claim 1, wherein A region of the first surface of the substrate adjacent to the coated side surface has a plurality of grooves, and the plurality of grooves are arranged at equal intervals along an extending direction of the coated side surface; A region of the second surface of the substrate adjacent to the coated side surface has a plurality of connection terminals, and the plurality of connection terminals are provided corresponding to the plurality of grooves one by one.

6. The display panel according to claim 1, wherein Further comprising a coating layer, the coating layer comprising at least two side traces, and the at least two side traces corresponding to the at least two grooves one by one; The side trace comprises a first end, an intermediate section, and a second end, the first end being located on the first surface and covering a part of the groove adjacent to the coated side surface, the second end being located on the second surface and covering the connection terminal, the intermediate section being located on the coated side surface, and two ends of the intermediate section being respectively connected to the first end and the second end, so that the bonding terminal in the groove is electrically connected to the corresponding connection terminal.

7. The display panel according to claim 6, wherein Further comprising an insulating coating, the insulating coating covering a side of the coating layer facing away from the substrate.

8. The display panel according to claim 6, wherein The coated side surface comprises a first side surface, a second side surface, and a third side surface; The first side surface is perpendicular to the first surface and the second surface, the first side surface is connected to the first surface through the second side surface, an included angle between the second side surface and the first surface is an obtuse angle, and an included angle between the second side surface and the first side surface is an obtuse angle; The first side surface is connected to the second surface through the third side surface, an included angle between the third side surface and the second surface is an obtuse angle, and an included angle between the third side surface and the first side surface is an obtuse angle.

9. The display panel according to claim 1, wherein The substrate is a glass substrate.

10. The display panel according to any one of claims 1-9, characterized in that, Comprising a plurality of display units, and the plurality of display units are spliced; In any two adjacent display units, the coated side of one display unit faces the coated side of the other display unit; or, In any two adjacent display units, the coated side of one display unit does not face the coated side of the other display unit.

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