Display panel and manufacturing method thereof, and mobile terminal

Abstract

The present application proposes a display panel, a manufacturing method thereof, and a mobile terminal, wherein the display panel includes a first substrate and a second substrate arranged opposite to each other, the first substrate includes a driving circuit layer, the driving circuit layer includes a plurality of first terminals, the second substrate includes a light-emitting layer and a plurality of second terminals arranged on the light-emitting layer, and a second terminal is arranged opposite to a first terminal; wherein, the display panel also includes a connecting layer arranged between the first substrate and the second substrate, the connecting layer includes a first connecting portion and a plurality of second connecting portions, the first connecting portion includes a plurality of first connecting sub-portions, the plurality of first connecting sub-portions are connected one-to-one with the plurality of first terminals, and the plurality of second connecting portions are connected one-to-one with the plurality of second terminals, wherein a first connecting sub-portion is connected correspondingly with a second connecting portion, so that the force between the first connecting portion and the second connecting portion is evenly distributed on the first substrate and the second substrate, thereby improving the connection reliability between the first substrate and the second substrate.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a mobile terminal. Background Art

[0002] At present, for display screens in which the circuit driving layer and the organic light-emitting display (OLED) light-emitting layer are separated into a mother-and-daughter board form, a conductive material is usually used to bond the circuit driving layer and the OLED light-emitting layer to achieve the function of electrical signal transmission and conduction. Among them, in the existing technology, a conductive material connector is usually provided on the daughter board to bond the OLED light-emitting layer located on the daughter board to the circuit driving layer located on the mother board.

[0003] However, if only conductive material connectors are provided on the daughter board, when the daughter board is bonded to the mother board, the bonding pressure between the daughter board and the mother board may be concentrated on the daughter board, or diffused to other areas outside the area where the conductive material connectors are located, thereby causing the daughter board to be prone to local depression or protrusion. There is a height difference between the area where the conductive material connectors are located and other areas, resulting in uneven force on the conductive material connectors, and further causing uneven bonding of the conductive material connectors; and since there is a gap between the circuit driving layer and the OLED light-emitting layer, the air retained in the gap will reduce the reliability of the display product. In the prior art, a filling layer needs to be provided between the driving circuit layer and the light-emitting layer. The filling layer is used to fill the gap between the circuit driving layer and the light-emitting layer, thereby improving the bonding strength between the circuit driving layer and the light-emitting layer. However, since the gap in the filling area is too small after the daughter board is bonded to the mother board, bubbles and uneven height of glue shortage are prone to occur during the filling process. Summary of the Invention

[0004] The embodiments of the present application provide a display panel and a manufacturing method thereof, and a mobile terminal to alleviate the deficiencies in the related art.

[0005] To achieve the above functions, the technical solutions provided in the embodiments of the present application are as follows:

[0006] An embodiment of the present application provides a display panel, comprising:

[0007] a first substrate, the first substrate comprising a driving circuit layer, the driving circuit layer comprising a plurality of first terminals;

[0008] a second substrate, one or more second substrates being arranged opposite to the first substrate, the second substrate comprising a light-emitting layer and a plurality of second terminals arranged on the light-emitting layer, a second terminal being arranged opposite to a first terminal; wherein,

[0009] The display panel also includes a connecting layer arranged between the first substrate and the second substrate, the connecting layer includes a first connecting portion and multiple second connecting portions, the first connecting portion includes multiple first conductive sub-portions, the multiple first connecting sub-portions are connected one-to-one with the multiple first terminals, and the multiple second connecting portions are connected one-to-one with the multiple second terminals, wherein one first conductive sub-portion is connected to one second connecting portion.

[0010] In the display panel provided in the embodiment of the present application, the first connecting portion further includes a filling portion arranged around the first connecting sub-portion and the second connecting portion; wherein the material of the first connecting sub-portion and the material of the second connecting portion are both metal materials, and the material of the filling portion is an insulating material.

[0011] In the display panel provided in the embodiment of the present application, in a direction perpendicular to the first substrate, a height of the filling portion is greater than or equal to a height of the first connecting sub-portion.

[0012] In the display panel provided in the embodiment of the present application, the height range of the first connecting sub-portion is 10 microns to 200 microns, the height range of the second connecting portion is 10 microns to 100 microns, and the height range of the filling portion is 10 microns to 200 microns.

[0013] In the display panel provided in the embodiment of the present application, in a first connecting sub-portion and a corresponding second connecting portion, the orthographic projection of the first connecting sub-portion in a direction perpendicular to the display panel overlaps with the orthographic projection of the second connecting portion in a direction perpendicular to the display panel.

[0014] In the display panel provided in the embodiment of the present application, the first connecting portion further includes a plurality of protrusions, one protrusion is provided corresponding to one first connecting sub-portion, and the protrusion is located between the first connecting sub-portion and the first terminal;

[0015] Among them, in a first connecting sub-portion and a corresponding protrusion, the orthographic projection of the first connecting sub-portion in a direction perpendicular to the first substrate covers the orthographic projection of the protrusion in a direction perpendicular to the first substrate.

[0016] In the display panel provided in the embodiment of the present application, in a direction perpendicular to the first substrate, the sum of the heights of the first connecting sub-portion and the protrusion is less than or equal to the height of the filling portion.

[0017] An embodiment of the present application provides a method for manufacturing a display panel, the method comprising the following steps:

[0018] Providing a first substrate, the first substrate including a driving circuit layer, the driving circuit layer including a plurality of first terminals, preparing a first connecting portion on the first substrate, the first connecting portion including a plurality of first connecting sub-portions, the plurality of first connecting sub-portions being connected to the plurality of first terminals in a one-to-one correspondence;

[0019] Providing one or more second substrates disposed opposite to the first substrate, the second substrates comprising a light-emitting layer and a plurality of second terminals disposed on the light-emitting layer, wherein a second terminal is disposed opposite to a first terminal, and a plurality of second connecting portions are formed on the second substrates, wherein the plurality of second connecting portions are connected to the plurality of second terminals in a one-to-one correspondence;

[0020] The first substrate and the second substrate are pressed together, wherein a first connecting sub-portion is correspondingly connected to a second connecting portion.

[0021] In the method for manufacturing a display panel provided in an embodiment of the present application, the step of preparing a first connecting portion on the first substrate includes:

[0022] forming the first connecting sub-portion on the first terminal;

[0023] A filling portion is formed on the second substrate, and the filling portion is arranged around the first connecting sub-portion.

[0024] An embodiment of the present application provides a mobile terminal, comprising a terminal body and any one of the above-mentioned display panels, wherein the terminal body and the display panel are integrated into one.

[0025] Beneficial effects of the embodiments of the present application: The embodiments of the present application provide a display panel and a manufacturing method thereof, and a mobile terminal, wherein the display panel includes a first substrate and a second substrate arranged relatively to each other, the first substrate includes a driving circuit layer, the driving circuit layer includes a plurality of first terminals, the second substrate includes a light-emitting layer and a plurality of second terminals arranged on the light-emitting layer, and a second terminal is arranged relatively to a first terminal; wherein, the display panel also includes a connecting layer arranged between the first substrate and the second substrate, the connecting layer includes a first connecting part and a plurality of second connecting parts, the first connecting part includes a plurality of first connecting sub-parts, a plurality of first connecting sub-parts are connected one-to-one with a plurality of first terminals, and a plurality of second connecting parts are connected one-to-one with a plurality of second terminals, wherein a first connecting sub-part is connected correspondingly with a second connecting part, so that the force between the first connecting part and the second connecting part is evenly distributed on the first substrate and the second substrate, thereby improving the connection reliability between the first substrate and the second substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the structure of an existing display panel;

[0028] Figure 2 A top view of a display panel provided in an embodiment of the present application;

[0029] Figure 3 for Figure 2 Schematic diagram of the first cross section at AA in the middle;

[0030] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0031] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0032] Figure 6 for Figure 2 Schematic diagram of the second cross section at AA in the middle;

[0033] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0034] Figure 8 A flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0035] Figures 9A-9D This is a structural diagram of the display panel during the manufacturing process provided by an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0037] The embodiments of the present application provide a display panel, a method for manufacturing the same, and a mobile terminal. These are described in detail below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0038] See also Figures 2 to 7 , an embodiment of the present application provides a display panel, the display panel including a first substrate 100 , the first substrate 100 including a driving circuit layer 102 , the driving circuit layer 102 including a plurality of first terminals 1021 ;

[0039] The second substrate 200, one or more second substrates 200 are arranged opposite to the first substrate 100, the second substrate 200 includes a light-emitting layer 202 and a plurality of second terminals 203 arranged on the light-emitting layer 202, and a second terminal 203 is arranged opposite to a first terminal 1021; wherein,

[0040] The display panel also includes a connecting layer 300 arranged between the first substrate 100 and the second substrate 200, the connecting layer 300 includes a first connecting portion 310 and multiple second connecting portions 320, the first connecting portion 310 includes multiple first connecting sub-portions 311, the multiple first connecting portions 310 are connected one-to-one with multiple first terminals 1021, and the multiple second connecting portions 320 are connected one-to-one with multiple second terminals 203, wherein one first connecting sub-portion 311 is connected to one second connecting portion 320.

[0041] It should be noted that, at present, for display screens in which the circuit driving layer and the organic light-emitting display (OLED) light-emitting layer are separated into mother-and-daughter boards, conductive materials are usually used to bond the circuit driving layer and the OLED light-emitting layer to achieve the function of electrical signal transmission and conduction. In the prior art, conductive material connectors are usually provided on the daughter board to bond the OLED light-emitting layer on the daughter board to the circuit driving layer on the mother board.

[0042] For example Figure 1, is a structural schematic diagram of an existing display panel, the display panel includes a first substrate 100 and a second substrate 200 arranged opposite to each other, and a filling portion 312 located between the first substrate 100 and the second substrate 200, wherein the first substrate 100 includes a first base 101, a driving circuit layer 102 arranged on the first substrate 101, the driving circuit layer 102 includes a plurality of first terminals 1021, the second substrate 200 includes a second base 201, a light-emitting layer 202 arranged on the second base 201, and a plurality of second terminals 203 arranged on the light-emitting layer 202, a second terminal 203 is arranged opposite to a first terminal 1021, the display panel also includes a connecting layer 300 located on the second substrate 200 near the first substrate 100, the connecting layer 300 includes a plurality of connecting portions 301, a connecting portion 301 connects a first terminal 1021 and a second terminal 203, and the first substrate 100 and the second substrate 200 are electrically connected through the connecting layer 300.

[0043] It is understandable that in the prior art, the number of the second substrate 200 can be one or more. In the embodiment of the present application, only the relative arrangement of the second substrate 200 and the first substrate 100 is used as an example to illustrate the display panel in the prior art.

[0044] Among them, since the connecting layer 300 is located on the second substrate 200, when the second substrate 200 is bonded to the first substrate 100, the bonding pressure between the second substrate 200 and the first substrate 100 may be concentrated on the second substrate 200, or diffused to other areas outside the area where the connecting layer 300 is located, thereby causing the second substrate 200 to easily have local depressions or protrusions 313. There is a height difference between the area where the connecting layer 300 is located and other areas, resulting in uneven force on the connecting layer 300, and further causing uneven bonding of the connecting layer 300.

[0045] It can be understood that the embodiment of the present application sets the connection layer 300 to include a first connection part 310 and multiple second connection parts 320, the first connection part 310 includes multiple first connection sub-parts 311, multiple first connection parts 310 are connected one-to-one with multiple first terminals 1021, and multiple second connection parts 320 are connected one-to-one with multiple second terminals 203, wherein one first connection sub-part 311 is connected to one second connection part 320, so that the force between the first connection part 310 and the second connection part 320 is evenly distributed on the first substrate 100 and the second substrate 200, thereby improving the connection reliability between the first substrate 100 and the second substrate 200.

[0046] The technical solution of this application is now described in conjunction with specific embodiments.

[0047] In one embodiment, please combine Figure 2 and Figure 3 ;in, Figure 2 A top view of a display panel provided in an embodiment of the present application; Figure 3 for Figure 2 Schematic diagram of the first cross section at AA in the middle.

[0048] This embodiment provides a display panel, which includes a first substrate 100, a second substrate 200 and a plurality of driving chips 400, wherein one or more second substrates 200 are arrayed on the same first substrate 100, the second substrate 200 is arranged opposite to the first substrate 100, there is a gap between the second substrate 200 and the first substrate 100, and the plurality of driving chips 400 are arranged on the first substrate 100; it should be noted that this embodiment takes the display panel including two second substrates 200 as an example to illustrate the technical solution of the present application.

[0049] The first substrate 100 includes a first base 101, a driving circuit layer 102 arranged on the first base 101, the driving circuit layer 102 includes a plurality of first terminals 1021, the second substrate 200 includes a second base 201, a light-emitting layer 202 arranged on the second base 201, and a plurality of second terminals 203 arranged on the light-emitting layer 202, and a second terminal 203 is arranged opposite to a first terminal 1021.

[0050] In this embodiment, the first substrate 101 and the second substrate 201 may each include a rigid substrate or a flexible substrate. When the first substrate 101 and the second substrate 201 are rigid substrates, the material may be metal or glass. When the first substrate 101 and the second substrate 201 are flexible substrates, the material may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, silicone resin, polyimide resin, and polyamide resin. This embodiment does not impose any specific restrictions on the materials of the first substrate 101 and the second substrate 201.

[0051] The driving circuit layer 102 includes but is not limited to thin film transistors, a gate insulating layer, an interlayer dielectric layer, a conductive pad, a first passivation layer, a pixel electrode, a second passivation layer and other structures well known to those skilled in the art, and its specific structure will not be described here.

[0052] The light-emitting layer 202 includes multiple pixel units, each of which is composed of at least two sub-pixels of different colors, and each of the pixel units includes but is not limited to red sub-pixels, green sub-pixels and blue sub-pixels arranged in an array; further, the light-emitting layer 202 is any one of an organic electroluminescent layer 202, a light-emitting diode light-emitting layer 202, a micro light-emitting diode light-emitting layer 202 and a mini light-emitting diode light-emitting layer 202.

[0053] In this embodiment, the display panel also includes a connecting layer 300 arranged between the first substrate 100 and the second substrate 200, the connecting layer 300 includes a first connecting portion 310 and multiple second connecting portions 320, the first connecting portion 310 includes multiple first connecting sub-portions 311, multiple first connecting sub-portions 311 are connected one-to-one with multiple first terminals 1021, and multiple second connecting portions 320 are connected one-to-one with multiple second terminals 203, wherein one first connecting sub-portion 311 is connected to one second connecting portion 320.

[0054] It can be understood that in this embodiment, the connection layer 300 is provided to include a first connection part 310 and multiple second connection parts 320, the first connection part 310 includes multiple first connection sub-parts 311, the multiple first connection sub-parts 311 are connected one-to-one with the multiple first terminals 1021, and the multiple second connection parts 320 are connected one-to-one with the multiple second terminals 203, wherein one first connection sub-part 311 is connected to one second connection part 320, so that the force between the first connection part 310 and the second connection part 320 is evenly distributed on the first substrate 100 and the second substrate 200, thereby improving the connection reliability between the first substrate 100 and the second substrate 200.

[0055] Furthermore, in this embodiment, the first connecting portion 310 also includes a filling portion 312 arranged around the first connecting sub-portion 311 and the second connecting portion 320; wherein, the material of the first connecting sub-portion 311 and the material of the second connecting portion 320 are both metal materials, and the material of the filling portion 312 is insulating material.

[0056] Specifically, the material of the first connecting sub-part 311 and the material of the second connecting part 320 include but are not limited to conductive materials such as silver (Ag), aluminum (Al) and / or copper (Cu), and the material of the filling part 312 includes but is not limited to liquid optical adhesive (OCR), wherein the liquid optical adhesive is preferably OCR optical adhesive. It can be understood that when the liquid optical adhesive is filled in the gap between the first substrate 100 and the second substrate 200, since the liquid optical adhesive has high adhesion and reliability, bubbles will not be generated due to the presence of air, dust and particulate matter in the gap, thereby enhancing the viscosity of the first connecting part 310 on the first substrate 100.

[0057] Please combine Figure 4 and Figure 5 ;in, Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 for Figure 3 Enlarged view of point C in the middle.

[0058] In this embodiment, in a direction perpendicular to the first substrate 100, the height of the filling portion 312 is greater than or equal to the height of the first connecting sub-portion 311; further, the height of the filling portion 312 is greater than the height of the first connecting sub-portion 311, the height of the first connecting sub-portion 311 ranges from 10 microns to 200 microns, the height of the second connecting portion 320 ranges from 10 microns to 100 microns above the first substrate, and the height of the filling portion 312 ranges from 10 microns to 200 microns; it can be understood that in this embodiment, the fluidity of the liquid optical adhesive is utilized to automatically fill the gap between two adjacent first connecting sub-portions with the filling portion 312, and the viscosity of the liquid optical adhesive is increased through pre-curing treatment to prevent its diffusion. By setting the height of the filling portion 312 to be greater than the height of the first connecting sub-portion 311, when the first substrate 100 and the second substrate 200 are bonded, the filling portion 312 is squeezed by the driving circuit layer 102 and the light-emitting layer 202, thereby removing the internal air and thereby improving the adhesion of the connecting layer 300.

[0059] Furthermore, the orthographic projection of the first connecting sub-portion 311 on the first substrate 100 covers the orthographic projection of the first terminal 1021 on the first substrate 100, the orthographic projection of the second connecting portion 320 on the second substrate 200 covers the orthographic projection of the second terminal 203 on the second substrate 200, and the filling portion 312 is arranged around the first terminal 1021 and the second terminal 203. The first connecting sub-portion 311 and the second connecting portion 320 are used to connect the gap in the signal conduction area between the driving circuit layer 102 and the light-emitting layer 202, and the filling portion 312 is used to fill the gap in the non-signal conduction area between the driving circuit layer 102 and the light-emitting layer 202, so that the first terminal 1021 is electrically connected to the second terminal 203 through the connecting portion 301; and, by arranging the filling portion 312 around the first connecting sub-portion 311 and the second connecting portion 320, the bonding strength between the circuit driving layer and the light-emitting layer 202 is improved, and the reliability of the display panel is further improved.

[0060] Preferably, in a first connecting sub-portion 311 and a corresponding second connecting portion 320, the orthographic projection of the first connecting sub-portion 311 in a direction perpendicular to the display panel overlaps with the orthographic projection of the second connecting portion 320 in a direction perpendicular to the display panel, thereby further improving the connection reliability between the first substrate 100 and the second substrate 200.

[0061] It should be noted that the shape of the first connecting sub-part 311 includes but is not limited to one of a sphere, a hemispherical shape and a cylindrical shape, and the shape of the second connecting part 320 includes but is not limited to one of a sphere, a hemispherical shape and a cylindrical shape. This embodiment does not impose specific restrictions on the size and shape of the first connecting sub-part 311 and the size and shape of the second connecting part 320.

[0062] In another embodiment, please combine Figure 6 and Figure 7 ;in, Figure 6 for Figure 2 Schematic diagram of the second cross section at AA in the middle; Figure 7 for Figure 6 Enlarged view of point D in the middle.

[0063] In this embodiment, the structure of the display panel is similar to / identical to that of the display panel provided in the above embodiment. For details, please refer to the description of the display panel in the above embodiment, which will not be repeated here. The only difference between the two is:

[0064] In this embodiment, the first connecting portion 310 also includes a plurality of protrusions 313, one of the protrusions 313 is provided corresponding to one of the first connecting sub-portion 311, and the protrusion 313 is located between the first connecting sub-portion 311 and the first terminal 1021; wherein, in one of the first connecting sub-portion 311 and the corresponding one of the protrusions 313, the orthographic projection of the first connecting sub-portion 311 in the direction perpendicular to the first substrate 100 covers the orthographic projection of the protrusion 313 in the direction perpendicular to the first substrate 100.

[0065] It can be understood that the present application further includes a plurality of protrusions 313 by setting the first connecting portion 310, one protrusion 313 corresponding to one first connecting sub-portion 311, and the protrusion 313 is located between the first connecting sub-portion 311 and the first terminal 1021, so that during the pressing process of the first substrate 100 and the second substrate 200, the protrusion 313 can limit the first connecting sub-portion 311 from moving upwards. Figure 6 The relative movement in the horizontal direction improves the alignment accuracy of the first connecting sub-portion 311 and the second connecting portion 320, thereby improving the bonding accuracy between the first substrate 100 and the second substrate 200.

[0066] Furthermore, the material of the protrusion 313 includes but is not limited to organic material, and the protrusion 313 can be prepared by a photomask process, wherein protrusion 313 structures of various shapes can be formed on the first substrate 100 by simply adjusting the pattern of the mask plate. Therefore, this embodiment does not impose any specific restrictions on the shape of the protrusion 313.

[0067] In a direction perpendicular to the first substrate 100, the sum of the heights of the first connecting sub-portion 311 and the protrusion 313 is less than or equal to the height of the filling portion 312; preferably, the sum of the heights of the first connecting sub-portion 311 and the protrusion 313 is less than the height of the filling portion 312, so that when the first substrate 100 and the second substrate 200 are bonded, the filling portion 312 is squeezed by the driving circuit layer 102 and the light-emitting layer 202, and the air inside the filling portion 312 is expelled, thereby improving the adhesion of the connecting layer 300.

[0068] See also Figure 8 , is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application.

[0069] An embodiment of the present application provides a method for manufacturing a display panel, the method comprising the following steps:

[0070] Step S10: Provide a first substrate 100, wherein the first substrate 100 includes a driving circuit layer 102, and the driving circuit layer 102 includes a plurality of first terminals 1021. Prepare a first connecting portion 310 on the first substrate 100, wherein the first connecting portion 310 includes a plurality of first connecting sub-portions 311, and the plurality of first connecting sub-portions 311 are connected one-to-one with the plurality of first terminals 1021.

[0071] The step S10 includes: providing a first substrate 101 , and forming the driving circuit layer 102 on the first substrate 101 .

[0072] In this embodiment, the step of preparing the first connecting portion 310 on the first substrate 100 includes:

[0073] Step S11: forming the first connecting sub-portion 311 on the first terminal 1021, such as Figure 9A shown.

[0074] Specifically, step S11 includes:

[0075] Step S111: forming a patterned photoresist layer on the second substrate 200 , wherein the orthographic projection of the photoresist layer on the first substrate 100 does not overlap with the orthographic projection of the first terminal 1021 on the first substrate 100 ;

[0076] Step S112: Form the first connecting sub-part 311 on the first terminal 1021. The material of the first connecting sub-part 311 includes but is not limited to conductive materials such as silver (Ag), aluminum (Al) and / or copper (Cu). The manufacturing method of the first connecting sub-part 311 includes but is not limited to one of screen printing, coating and yellow light processing. This embodiment does not impose any specific restrictions on this.

[0077] Step S113: removing the photoresist layer.

[0078] Step S12: forming a filling portion 312 on the second substrate 200, wherein the filling portion 312 is arranged around the first connecting sub-portion 311, as shown in FIG. Figure 9B shown.

[0079] Among them, the material of the filling part 312 includes but is not limited to liquid optical glue (OCR), and the manufacturing method of the filling part 312 includes but is not limited to one of screen printing and inkjet printing. Among them, the liquid optical glue is preferably OCR optical glue. It can be understood that in step S12, pre-curing treatment can also be performed to increase the viscosity of the liquid optical glue to prevent its diffusion.

[0080] Step 20: Provide one or more second substrates 200 disposed opposite to the first substrate 100, wherein the second substrate 200 includes a light-emitting layer 202 and a plurality of second terminals 203 disposed on the light-emitting layer 202, wherein one second terminal 203 is disposed opposite to one first terminal 1021, and a plurality of second connecting portions 320 are prepared on the second substrate 200, wherein the plurality of second connecting portions 320 are connected to the plurality of second terminals 203 in a one-to-one correspondence, as shown in FIG. Figure 9C shown.

[0081] The step S10 includes: providing a second substrate 201 , and sequentially forming the light-emitting layer 202 and a plurality of second terminals 203 on the second substrate 201 .

[0082] Step 30: Press the first substrate 100 and the second substrate 200 together, wherein a first connecting sub-portion 311 is correspondingly connected to a second connecting portion 320, as shown in FIG. Figure 9D shown.

[0083] Specifically, in this embodiment, step S30 includes:

[0084] Step S31 : Aligning the first connecting sub-portion 311 and the second connecting portion 320 .

[0085] Step S32 : pressing the first substrate 100 and the second substrate 200 to connect the first connecting sub-portion 311 with the second connecting portion 320 , wherein the filling portion 312 is disposed around the second connecting portion 320 .

[0086] Please note that Figure 1 In the existing display panel manufacturing method, the first substrate 100 and the second substrate 200 are usually first bonded together, and then the filling portion 312 is filled between the first substrate 100 and the second substrate 200. Since the gap between the first substrate 100 and the second substrate 200 is small after bonding, and the filling portion 312 is usually made of liquid optical adhesive and other materials, it is easy to cause problems such as bubbles.

[0087] It can be understood that in this embodiment, after the first substrate 100 and the second substrate 200 are connected, the liquid optical adhesive is filled in the gap between the first substrate 100 and the second substrate 200. Since the liquid optical adhesive has high adhesion and reliability, bubbles will not be generated due to the presence of air, dust and particulate matter in the gap, thereby enhancing the viscosity of the first connecting portion 310 on the first substrate 100; at the same time, the filling portion 312 is squeezed by the first substrate 100 and the second substrate 200, thereby expelling the internal air, thereby improving the adhesion of the connecting layer 300.

[0088] This embodiment provides a mobile terminal, which includes a terminal body and the display panel described in any one of the above embodiments, wherein the terminal body and the display panel are integrated into one.

[0089] It can be understood that the display panel has been described in detail in the above embodiments and will not be repeated here.

[0090] In specific applications, the mobile terminal can be the display screen of a smartphone, tablet computer, laptop computer, smart bracelet, smart watch, smart glasses, smart helmet, desktop computer, smart TV or digital camera, and can even be used on electronic devices with flexible display screens.

[0091] In summary, the present application proposes a display panel, a manufacturing method thereof, and a mobile terminal, wherein the display panel includes a first substrate and a second substrate arranged relatively to each other, the first substrate including a driving circuit layer, the driving circuit layer including a plurality of first terminals, the second substrate including a light-emitting layer and a plurality of second terminals arranged on the light-emitting layer, and a second terminal is arranged relatively to a first terminal; wherein the display panel also includes a connecting layer arranged between the first terminal and the second terminal, the connecting layer including a first connecting portion and a plurality of second connecting portions, the first connecting portion including a plurality of first connecting sub-portions, the plurality of first connecting sub-portions being connected one-to-one with the plurality of first terminals, and the plurality of second connecting portions being connected one-to-one with the plurality of second terminals, wherein a first connecting sub-portion is connected correspondingly to a second connecting portion, so that the force between the first connecting portion and the second connecting portion is evenly distributed on the first substrate and the second substrate, thereby improving the connection reliability between the first substrate and the second substrate. In the above embodiments, the description of each embodiment has its own focus. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0092] The above is a detailed introduction to a display panel, a manufacturing method thereof, and a mobile terminal provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display panel, characterized in that: include: a first substrate, the first substrate comprising a driving circuit layer, the driving circuit layer comprising a plurality of first terminals; a second substrate, one or more second substrates being arranged opposite to the first substrate, the second substrate comprising a light-emitting layer and a plurality of second terminals arranged on the light-emitting layer, a second terminal being arranged opposite to a first terminal; wherein, The display panel also includes a connecting layer arranged between the first substrate and the second substrate, the connecting layer including a first connecting portion and multiple second connecting portions, the first connecting portion including multiple first connecting sub-portions, the multiple first connecting sub-portions correspond one-to-one to and are connected to the multiple first terminals, the first connecting sub-portions cover the first terminals, the multiple second connecting portions correspond one-to-one to and are connected to the multiple second terminals, the second connecting portions cover the second terminals, wherein one first connecting sub-portion is correspondingly connected to one second connecting portion, and the first substrate and the second substrate are electrically connected through the connecting layer.

2. The display panel according to claim 1, wherein: The first connecting portion further includes a filling portion disposed around the first connecting sub-portion and the second connecting portion; wherein the first connecting sub-portion and the second connecting portion are both made of metal materials, and the filling portion is made of insulating material.

3. The display panel according to claim 2, wherein: In a direction perpendicular to the first substrate, a height of the filling portion is greater than or equal to a height of the first connecting sub-portion.

4. The display panel according to claim 3, wherein: The height of the first connecting portion is in the range of 10 micrometers to 200 micrometers, the height of the second connecting portion is in the range of 10 micrometers to 100 micrometers, and the height of the filling portion is in the range of 10 micrometers to 200 micrometers.

5. The display panel according to claim 2, wherein: In a first connecting sub-portion and a corresponding second connecting portion, an orthographic projection of the first connecting sub-portion in a direction perpendicular to the display panel overlaps with an orthographic projection of the second connecting portion in a direction perpendicular to the display panel.

6. The display panel according to claim 2, wherein: The first connecting portion further includes a plurality of protrusions, one protrusion being provided corresponding to one first connecting sub-portion, and the protrusion being located between the first connecting sub-portion and the first terminal; Among them, in a first connecting sub-portion and a corresponding protrusion, the orthographic projection of the first connecting sub-portion in a direction perpendicular to the first substrate covers the orthographic projection of the protrusion in a direction perpendicular to the first substrate.

7. The display panel according to claim 6, wherein: In a direction perpendicular to the first substrate, a sum of heights of the first connecting sub-portion and the protrusion is less than or equal to a height of the filling portion.

8. A method for manufacturing a display panel, characterized in that: The production method comprises the following steps: Providing a first substrate, the first substrate including a driving circuit layer, the driving circuit layer including a plurality of first terminals, preparing a first connecting portion on the first substrate, the first connecting portion including a plurality of first connecting sub-portions, the plurality of first connecting sub-portions corresponding one-to-one to and connected to the plurality of first terminals, the first connecting sub-portions covering the first terminals; Providing one or more second substrates disposed opposite to the first substrate, the second substrates comprising a light-emitting layer and a plurality of second terminals disposed on the light-emitting layer, wherein a second terminal is disposed opposite to a first terminal, and a plurality of second connecting portions are formed on the second substrate, wherein the plurality of second connecting portions correspond to and are connected to the plurality of second terminals one by one, and the second connecting portions cover the second terminals; The first substrate and the second substrate are pressed together, wherein a first connecting sub-portion is correspondingly connected to a second connecting portion, and the first substrate and the second substrate are electrically connected via a connecting layer, and the connecting layer includes a first connecting portion and a plurality of second connecting portions.

9. The method for manufacturing a display panel according to claim 8, wherein: The step of preparing the first connecting portion on the first substrate includes: forming the first connecting sub-portion on the first terminal; A filling portion is formed on the second substrate, and the filling portion is arranged around the first connecting sub-portion.

10. A mobile terminal, characterized in that: The mobile terminal includes a terminal body and the display panel according to any one of claims 1 to 7, wherein the terminal body and the display panel are integrated into one body.

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