阅读说明：本技术 显示模组及移动终端 (Display module and mobile terminal ) 是由 余朋飞 于 2021-08-04 设计创作，主要内容包括：本申请提供一种显示模组及移动终端,包括显示面板,柔性电路板和印刷电路板,印刷电路板通过柔性电路板与显示面板电性连接；柔性电路板靠近印刷电路板的一侧包括与印刷电路板电性连接的绑定端子组；印刷电路板至少包括与绑定端子组电性连接的第一导电层、及设置于第一导电层和绑定端子组之间的绝缘层；其中,第一导电层包括第一主体、以及连接第一主体与绑定端子组的裸露连接段,绝缘层设置于第一主体上且覆盖第一主体；绑定端子组在印刷电路板上的正投影覆盖连接段在印刷电路板上的正投影,从而避免现有技术中当印刷电路板处于潮湿、盐雾等环境中时,其第一导电层的第一主体暴露在外,而存在腐蚀、损伤等隐患。(The application provides a display module and a mobile terminal, which comprise a display panel, a flexible circuit board and a printed circuit board, wherein the printed circuit board is electrically connected with the display panel through the flexible circuit board; one side of the flexible circuit board close to the printed circuit board comprises a binding terminal group electrically connected with the printed circuit board; the printed circuit board at least comprises a first conductive layer electrically connected with the binding terminal group and an insulating layer arranged between the first conductive layer and the binding terminal group; the first conducting layer comprises a first main body and an exposed connecting section for connecting the first main body and the binding terminal group, and the insulating layer is arranged on the first main body and covers the first main body; the orthographic projection of the binding terminal group on the printed circuit board covers the orthographic projection of the connecting section on the printed circuit board, so that the hidden troubles of corrosion, damage and the like caused by the fact that a first main body of a first conducting layer of the printed circuit board is exposed outside when the printed circuit board is in environments of humidity, salt mist and the like in the prior art are avoided.)

1. A display module is characterized by comprising a display panel, a flexible circuit board and a printed circuit board, wherein the printed circuit board is electrically connected with the display panel through the flexible circuit board;

one side of the flexible circuit board close to the printed circuit board comprises a binding terminal group electrically connected with the printed circuit board; the printed circuit board at least comprises a first conductive layer electrically connected with the binding terminal group and an insulating layer arranged between the first conductive layer and the binding terminal group;

the first conducting layer comprises a first main body and an exposed connecting section for connecting the first main body and the binding terminal group, and the insulating layer is arranged on the first main body and covers the first main body; the orthographic projection of the binding terminal group on the printed circuit board covers the orthographic projection of the connecting section on the printed circuit board.

2. The display module assembly of claim 1, wherein the insulating layer has an opening formed thereon for exposing the connecting segment, and the connecting segment is electrically connected to the binding terminal set through the opening; wherein, the orthographic projection of the binding terminal group on the printed circuit board covers the opening.

3. The display module of claim 2, wherein an orthographic projection of the binding terminal set on the printed circuit board coincides with the opening, and the binding terminal set is disposed in the opening and electrically connected to the connecting section.

4. The display module of claim 3, wherein a first conductive adhesive is disposed in the opening, the first conductive adhesive filling a gap between the binding terminal set and the connecting section, and the connecting section is electrically connected to the binding terminal set through the first conductive adhesive.

5. The display module assembly as claimed in claim 2, wherein a second conductive layer electrically connected to the binding terminal set is disposed between the insulating layer and the binding terminal set, and a side of the second conductive layer away from the binding terminal set passes through the opening and is connected to the connecting section; the orthographic projection of the binding terminal group on the printed circuit board covers the second conducting layer, and the binding terminal group is electrically connected with the connecting section through the second conducting layer.

6. The display module according to claim 5, wherein the display module further comprises a second conductive adhesive located between the flexible circuit board and the printed circuit board, and the second conductive layer is electrically connected to the binding terminal group through the second conductive adhesive; wherein, the orthographic projection of the second conductive adhesive on the printed circuit board covers the second conductive layer.

7. The display module of claim 6, wherein the second conductive layer comprises a plurality of second sub-conductive layers arranged in an array on the printed circuit board, and the first conductive layer comprises a plurality of first sub-conductive layers connected to the plurality of second sub-conductive layers in a one-to-one correspondence;

any first sub-conducting layer comprises a first sub-main body and a sub-connecting section for connecting the first sub-main body with the second sub-conducting layer; the insulating layer is arranged on the plurality of first sub-bodies and covers the first sub-bodies.

8. The display module of claim 7, wherein the binding terminal set comprises a plurality of binding terminals in one-to-one correspondence with the plurality of second sub-conductive layers, an orthographic projection of the plurality of binding terminals on the printed circuit board covers the plurality of second sub-conductive layers, and the binding terminals are electrically connected with the sub-connection segments through the second sub-conductive layers.

9. The display module according to claim 8, wherein the second conductive paste comprises a plurality of second sub-conductive pastes corresponding to the plurality of second sub-conductive layers one to one, and the second sub-conductive layers are electrically connected to the bonding terminals through the second sub-conductive pastes; wherein, the orthographic projection of the second sub-conductive adhesive on the printed circuit board covers the second sub-conductive layer.

10. A mobile terminal, characterized in that the mobile terminal comprises a terminal body and a display module according to any one of claims 1-9, wherein the terminal body and the display module are combined into a whole.

Technical Field

The application relates to the field of display, in particular to a display module and a mobile terminal.

Background

In order to ensure the power supply capability of the liquid crystal panel, the middle-sized product mostly adopts a Printed Circuit Board (PCB) to solder important electronic components on the PCB, so that input signals of the liquid crystal panel are processed and then input to a chip (IC) through a flexible circuit Board, thereby realizing processing and power supply of signals inside the panel.

At present, a Flexible Printed Circuit (FPC) is mostly used for electrically connecting a panel (panel) with the FPC; in the prior art, the gold fingers of the flexible circuit board and the gold fingers arranged on the outermost layer of the printed circuit board are aligned and crimped by a high-temperature binding method, so that electrical conduction is realized.

However, when the flexible circuit board is bonded with the printed circuit board by hot pressing, the flexible circuit board cannot completely cover the input end wiring of the printed circuit board, so that when the product is in environments such as moisture, salt mist and the like, the wiring at the position is not effectively protected, and hidden dangers such as corrosion, damage and the like exist; meanwhile, when the external environment generates electrostatic interference, the exposed wires are easily subjected to electrostatic interference, and the functions of the product such as display, touch and the like are affected.

Disclosure of Invention

The embodiment of the application provides a display module and a mobile terminal, which are used for effectively avoiding the hidden troubles of corrosion, damage and the like of an output line end in a printed circuit board due to the fact that the output line end is exposed outside.

In order to realize the above functions, the technical solutions provided in the embodiments of the present application are as follows:

the embodiment of the application provides a display module, which comprises a display panel, a flexible circuit board and a printed circuit board, wherein the printed circuit board is electrically connected with the display panel through the flexible circuit board;

one side of the flexible circuit board close to the printed circuit board comprises a binding terminal group electrically connected with the printed circuit board; the printed circuit board at least comprises a first conductive layer electrically connected with the binding terminal group and an insulating layer arranged between the first conductive layer and the binding terminal group;

the first conducting layer comprises a first main body and an exposed connecting section for connecting the first main body and the binding terminal group, and the insulating layer is arranged on the first main body and covers the first main body; the orthographic projection of the binding terminal group on the printed circuit board covers the orthographic projection of the connecting section on the printed circuit board.

In the display module provided by the embodiment of the application, the insulating layer is provided with an opening for exposing the connecting section, and the connecting section is electrically connected with the binding terminal group through the opening; wherein, the orthographic projection of the binding terminal group on the printed circuit board covers the opening.

In the display module assembly that this application embodiment provided, bind the terminal group and be in orthographic projection on the printed circuit board with the opening coincidence, bind the terminal group set up in the opening with linkage segment electric connection.

In the display module assembly that this application embodiment provided, be provided with first conducting resin in the opening, first conducting resin fills bind terminal group with space between the linkage segment, the linkage segment passes through first conducting resin with bind terminal group electric connection.

In the display module provided by the embodiment of the application, a second conductive layer electrically connected with the binding terminal group is arranged between the insulating layer and the binding terminal group, and one side, far away from the binding terminal group, of the second conductive layer penetrates through the opening to be connected with the connecting section; the orthographic projection of the binding terminal group on the printed circuit board covers the second conducting layer, and the binding terminal group is electrically connected with the connecting section through the second conducting layer.

In the display module provided by the embodiment of the application, the display module further comprises a second conductive adhesive located between the flexible circuit board and the printed circuit board, and the second conductive layer is electrically connected with the binding terminal group through the second conductive adhesive; wherein, the orthographic projection of the second conductive adhesive on the printed circuit board covers the second conductive layer.

In the display module provided in the embodiment of the present application, the second conductive layer includes a plurality of second sub-conductive layers arranged in an array on the printed circuit board, and the first conductive layer includes a plurality of first sub-conductive layers connected to the plurality of second sub-conductive layers in a one-to-one correspondence;

any first sub-conducting layer comprises a first sub-main body and a sub-connecting section for connecting the first sub-main body with the second sub-conducting layer; the insulating layer is arranged on the plurality of first sub-bodies and covers the first sub-bodies.

In the display module assembly that this application embodiment provided, it includes with a plurality of the second sub-conducting layer one-to-one to bind the terminal group, and is a plurality of it is in to bind the terminal orthographic projection on the printed circuit board covers a plurality of the second sub-conducting layer, just it passes through to bind the terminal the second sub-conducting layer with sub-linkage segment electric connection.

In the display module provided in the embodiment of the application, the second conductive adhesive includes a plurality of second sub conductive adhesives corresponding to the plurality of second sub conductive layers one to one, and the second sub conductive layers are electrically connected to the binding terminals through the second sub conductive adhesives; wherein, the orthographic projection of the second sub-conductive adhesive on the printed circuit board covers the second sub-conductive layer.

The embodiment of the application provides a mobile terminal, including terminal subject and above-mentioned arbitrary display module assembly, terminal subject with display module assembly makes up as an organic whole.

The beneficial effects of the embodiment of the application are as follows: the embodiment of the application provides a display module, which comprises a display panel, a flexible circuit board and a printed circuit board, wherein the printed circuit board is electrically connected with the display panel through the flexible circuit board; one side of the flexible circuit board close to the printed circuit board comprises a binding terminal group connected with the printed circuit board; the printed circuit board at least comprises a first conductive layer electrically connected with the binding terminal group and an insulating layer arranged between the first conductive layer and the binding terminal group; the first conducting layer comprises a first main body and an exposed connecting section for connecting the first main body and the binding terminal group, and the insulating layer is arranged on the first main body and covers the first main body; the orthographic projection of the binding terminal group on the printed circuit board covers the orthographic projection of the connecting section on the printed circuit board, so that the hidden troubles of corrosion, damage and the like caused by the fact that a conducting layer is exposed outside when the printed circuit board is in the environments of moisture, salt mist and the like in the prior art are avoided.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a display module in the prior art;

FIG. 2 is a top view of a prior art flexible circuit board on a side thereof adjacent to a printed circuit board;

FIG. 3 is a top view of a prior art side of a printed circuit board adjacent to a flexible circuit board;

FIG. 4 is a schematic view of the structure at A in FIG. 1;

fig. 5 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;

FIG. 6 is a top view of a side of a flexible printed circuit board adjacent to a printed circuit board according to an embodiment of the present disclosure;

FIG. 7 is a first top view of a side of a printed circuit board adjacent to a flexible circuit board according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a first configuration at B in FIG. 5;

FIG. 9 is a second schematic view of the structure at B in FIG. 5;

FIG. 10 is a second top view of a side of a printed circuit board adjacent to a flexible circuit board according to an embodiment of the present application;

fig. 11 is a schematic view of a third structure at B in fig. 5.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

Please refer to fig. 1 to 4, wherein fig. 1 is a schematic structural diagram of a display module in the prior art; FIG. 2 is a top view of a prior art flexible circuit board on a side thereof adjacent to a printed circuit board; FIG. 3 is a top view of a prior art side of a printed circuit board adjacent to a flexible circuit board; fig. 4 is a schematic structural diagram at a in fig. 1.

In the prior art, the display module 1 includes a display panel 10, a flexible circuit board 20, a printed circuit board 30 and a chip 40, wherein the printed circuit board 30 is electrically connected to the display panel 10 through the flexible circuit board 20; one side of the flexible circuit board 20 close to the printed circuit board 30 includes a binding terminal group 22 electrically connected to the printed circuit board 30, and the binding terminal group 22 is disposed on the first substrate 21 of the flexible circuit board 20; the printed circuit board 30 includes a first conductive layer 32 electrically connected to the binding terminal group 22, the first conductive layer 32 is disposed on the second substrate 31 of the printed circuit board 30, wherein the first conductive layer 32 includes a plurality of first sub-conductive layers 321 arranged in an array on the printed circuit board 30, the first sub-conductive layer 321A includes a first sub-body 3211 and a connecting segment 3212 connecting the first sub-body 3211 and the binding terminal group 22, and the binding terminal group 22 includes a plurality of binding terminals 221 connected to the plurality of connecting segments 3212 in a one-to-one correspondence manner; the display module 1 further includes a conductive adhesive 50 located between the flexible circuit board 20 and the printed circuit board 30, and the connection segment 3212 and the binding terminal 221 are electrically connected through the conductive adhesive 50; in the prior art, a high-temperature bonding method is usually adopted to align and crimp the bonding terminal 221 of the flexible circuit board 20 and the connection segment 3212 disposed at the outermost layer of the printed circuit board 30, so as to achieve electrical conduction.

However, when the binding terminals 221 and the connecting segments 3212 are hot-pressed and bound, the binding terminals 221 of the flexible circuit board 20 cannot cover the plurality of first sub-bodies 3211 of the printed circuit board 30, so that a portion of the first sub-bodies 3211 is exposed to the outside, and when the display module 1 is in a humid environment, a salt mist environment, and the like, the exposed portion of the first sub-bodies 3211 is not effectively protected, so that hidden troubles such as corrosion and damage exist; meanwhile, when the external environment generates electrostatic interference, the exposed portion of the first sub-body 3211 is easily subjected to electrostatic interference, which affects the display and touch functions of the product. Based on this, the embodiment of the application provides a display module and a mobile terminal, which are used for effectively avoiding hidden troubles such as corrosion and damage caused by the fact that the first sub-body is exposed outside in the printed circuit board.

Referring to fig. 5 to 11, an embodiment of the present application provides a display module 1, where the display module 1 includes a display panel 10, a flexible circuit board 20 and a printed circuit board 30, and the printed circuit board 30 is electrically connected to the display panel 10 through the flexible circuit board 20; one side of the flexible circuit board 20 close to the printed circuit board 30 comprises a binding terminal group 22 connected with the printed circuit board 30; the printed circuit board 30 at least includes a first conductive layer 32 electrically connected to the binding terminal group 22, and an insulating layer 34 disposed between the first conductive layer 32 and the binding terminal group 22; the first conductive layer 32 includes a first main body 321 and an exposed connecting segment 322 connecting the first main body 321 and the binding terminal group 22, and the insulating layer 34 is disposed on the first main body 321 and covers the first main body 321; the orthographic projection of the binding terminal group 22 on the printed circuit board 30 covers the orthographic projection of the connecting section 322 on the printed circuit board 30.

In the embodiment of the present application, the first conductive layer 32 includes a first main body 321 and an exposed connecting segment 322 connecting the first main body 321 and the binding terminal group 22, and the insulating layer 34 is disposed on the first main body 321 and covers the first main body 321; the orthographic projection of the binding terminal group 22 on the printed circuit board 30 covers the orthographic projection of the connecting section 322 on the printed circuit board 30, so that the hidden troubles of corrosion, damage and the like caused by the fact that the first conducting layer 32 is exposed when the printed circuit board 30 is in a humid environment, a salt fog environment and the like in the prior art are avoided; meanwhile, the influence of environmental factors such as water vapor and static electricity on the first conductive layer 32 is isolated, so that the stability of the product in the use stage is improved.

The technical solution of the present application will now be described with reference to specific embodiments.

Example one

Please refer to fig. 5 to 9, wherein fig. 5 is a schematic structural diagram of a display module 1 according to an embodiment of the present disclosure; FIG. 6 is a top view of a side of a flexible printed circuit board adjacent to a printed circuit board according to an embodiment of the present disclosure; FIG. 7 is a first top view of a side of a printed circuit board adjacent to a flexible circuit board according to an embodiment of the present disclosure; fig. 8 is a first structural diagram at B in fig. 5, and fig. 9 is a second structural diagram at B in fig. 5.

The embodiment provides a display module 1, which includes a flexible circuit board 20 and a printed circuit board 30, wherein the printed circuit board 30 is electrically connected to the display panel 10 through the flexible circuit board 20.

It is understood that, in the present embodiment, the display panel 10 may be an organic Light-emitting diode display panel 10 (OLED) or a Light-emitting diode display panel 10 (LED), which is not limited in this embodiment, wherein the display panel 10 includes but is not limited to a substrate, a metal layer, an insulating layer 34, an active layer, and other conventional film layers that are stacked in sequence, and this embodiment does not have to be described in more detail.

In this embodiment, one side of the flexible circuit board 20 close to the printed circuit board 30 includes a binding terminal group 22 electrically connected to the printed circuit board 30, and the binding terminal group 22 is disposed on the first substrate 21 of the flexible circuit board 20; the printed circuit board 30 at least includes a first conductive layer 32 electrically connected to the binding terminal group 22, and an insulating layer 34 disposed between the first conductive layer 32 and the binding terminal group 22, wherein the first conductive layer 32 and the insulating layer 34 are stacked on a second substrate 31 of the printed circuit board 30.

The first conductive layer 32 includes a first main body 321 and an exposed connecting segment 322 connecting the first main body 321 and the binding terminal group 22, and the insulating layer 34 is disposed on the first main body 321 and covers the first main body 321; the orthographic projection of the binding terminal group 22 on the printed circuit board 30 covers the orthographic projection of the connecting section 322 on the printed circuit board 30. It can be understood that, in the present embodiment, by disposing the theater cable on the first body 321 and covering the insulating layer 34 on the first body 321, the first conductive layer 32 is prevented from being exposed to the outside when the first body 321 is in a humid environment, a salt fog environment, or the like, and thus, corrosion, damage, or the like are prevented.

Further, in this embodiment, the insulating layer 34 is provided with an opening 341 exposing the connecting segment 322, and the connecting segment 322 is electrically connected to the binding terminal group 22 through the opening 341; wherein, the orthographic projection of the binding terminal group 22 on the printed circuit board 30 covers the opening 341. It can be understood that, in the present embodiment, the orthographic projection of the binding terminal group 22 on the printed circuit board 30 is arranged to cover the opening 341, so that the contact surface between the binding terminal group 22 and the connecting section 322 in the orthographic projection direction of the printed circuit board 30 is maximized, thereby improving the electrical connection performance between the flexible circuit board 20 and the printed circuit board 30.

In an embodiment, an orthographic projection of the binding terminal group 22 on the printed circuit board 30 coincides with the opening 341, and the binding terminal group 22 is disposed in the opening 341 and electrically connected to the connecting section 322, as shown in fig. 8. It can be understood that, in the embodiment, by making the orthographic projection of the binding terminal group 22 on the printed circuit board 30 coincide with the opening 341, the binding terminal group 22 is disposed in the opening 341 and electrically connected to the connecting section 322, so that the thickness of the display module 1 is reduced, and the purpose of saving space is achieved.

In an embodiment, a first conductive adhesive 51 is disposed in the opening 341, the first conductive adhesive 51 fills a gap between the binding terminal group 22 and the connecting segment 322, and the connecting segment 322 is electrically connected to the binding terminal group 22 through the first conductive adhesive 51, as shown in fig. 9. It can be understood that in the present embodiment, the first conductive adhesive 51 is disposed in the opening 341, the first conductive adhesive 51 fills a gap between the binding terminal group 22 and the connecting section 322, and the connecting section 322 is electrically connected to the binding terminal group 22 through the first conductive adhesive 51, so that an influence of environmental factors such as moisture, static electricity and the like on the binding section subgroup and the connecting section 322 is avoided, and further, the stability of the product in the use stage is improved.

It should be noted that, in this embodiment, the first conductive adhesive 51 is disposed in the opening 341, the first conductive adhesive 51 fills a gap between the binding terminal group 22 and the connection section 322, and the connection section 322 is electrically connected to the binding terminal group 22 through the first conductive adhesive 51.

In this embodiment, the first conductive layer 32 includes a plurality of first sub-conductive layers 321 arranged in an array on the printed circuit board 30, and any one of the first sub-conductive layers 321A includes a first sub-body 3211 and a sub-connecting segment 3212 connecting the first sub-body 3211 and the second sub-conductive layer 331; the insulating layer 34 is disposed on the first sub-bodies 3211 and covers the first sub-bodies 3211.

Furthermore, a plurality of openings 341 exposing the sub-connecting segments 3212 are formed in the insulating layer 34, and the sub-connecting segments 3212 are electrically connected to the binding terminal group 22 through the openings 341; wherein, the orthographic projection of the binding terminal group 22 on the printed circuit board 30 covers the opening 341.

Specifically, the binding terminal group 22 includes a plurality of binding terminals 221 corresponding to the plurality of sub-connection segments 3212 one to one, an orthographic projection of the plurality of binding terminals 221 on the printed circuit board 30 covers the plurality of sub-connection segments 3212, and the binding terminals 221 are electrically connected to the first sub-body 3211 through the sub-connection segments 3212, so that the flexible circuit board 20 is electrically connected to the printed circuit board 30.

In this embodiment, the first conductive adhesive 51 includes a plurality of first sub conductive adhesives 511 corresponding to the plurality of sub connection segments 3212 one to one, and the connection segment 322 is electrically connected to the binding terminal 221 through the first sub conductive adhesives 511; the orthographic projection of the first sub-conductive adhesive 511 on the printed circuit board 30 covers the connecting section 322, so that the first main body 321 is isolated from the environment such as water vapor and static electricity, and the stability of the product in the use stage is further improved.

It is understood that, in an embodiment, the side of the binding terminal 221 away from the flexible circuit board 20 can pass through the opening 341 to be electrically connected with the connecting section 322, which has the same beneficial effects as the above-mentioned embodiment, and this embodiment is not repeated for brevity.

It should be noted that, in this embodiment, the binding terminal 221 is a first gold finger on the flexible circuit board 20, the sub-connection segment 3212 is a second gold finger on the printed circuit board 30, and in the display module 1, the first gold finger on the flexible circuit board 20 and the second gold finger on the printed circuit board 30 are bound by hot pressing, so that the flexible circuit board 20 and the printed circuit board 30 are electrically connected.

In this embodiment, the printed circuit board 30 further includes components (not shown), including but not limited to resistors, capacitors, inductors, potentiometers, transformers, diodes, and transistors; one of the resistor, the capacitor, the inductor, the potentiometer, the transformer, the diode and the transistor is electrically connected to any one of the first sub-conductive layers 321A, the first sub-conductive layer 321A is a signal input line of the printed circuit board 30, and the signal input line is electrically connected to the first gold finger through the second gold finger, so that transmission of an external electrical signal and the display panel 10 is realized.

Example II

In this embodiment, the structure of the display module 1 is similar to/the same as the first structure of the display module 1 provided in the above embodiment, and please refer to the description of the display module 1 in the above embodiment, which is not repeated herein, and the difference between the two structures is only:

please refer to fig. 5, fig. 6, fig. 10 and fig. 11; fig. 10 is a second top view of a side of the printed circuit board close to the flexible circuit board according to the embodiment of the present application; fig. 11 is a schematic view of a third structure at B in fig. 5.

In this embodiment, a second conductive layer 33 electrically connected to the binding terminal group 22 is disposed between the insulating layer 34 and the binding terminal group 22, and one side of the second conductive layer 33 away from the binding terminal group 22 passes through the opening 341 and is electrically connected to the connecting segment 322; the orthographic projection of the binding terminal group 22 on the printed circuit board 30 covers the second conductive layer 33, and the binding terminal group 22 is electrically connected with the connecting section 322 through the second conductive layer 33.

In this embodiment, the display module 1 further includes a second conductive adhesive 52 located between the flexible circuit board 20 and the printed circuit board 30, and the second conductive layer 33 is electrically connected to the binding terminal group 22 through the second conductive adhesive 52; wherein, the orthographic projection of the second conductive adhesive 52 on the printed circuit board 30 covers the second conductive layer 33, as shown in fig. 11. It can be understood that, in the present embodiment, the second conductive layer 33 electrically connected to the binding terminal group 22 is disposed between the insulating layer 34 and the binding terminal group 22, so that the first conductive layer 32 is located inside the printed circuit board 30, thereby avoiding the potential hazards of corrosion, damage and the like caused by the exposure of the first conductive layer 32 when the printed circuit board 30 is in the environment of humidity, salt fog and the like in the prior art; meanwhile, the orthographic projection of the second conductive adhesive 52 on the printed circuit board 30 is arranged to cover the second conductive layer 33, so that the influence of environmental factors such as water vapor and static electricity on the second conductive layer 33 is isolated, and the stability of the product in the use stage is improved.

Further, in the embodiment, the second conductive layer 33 includes a plurality of second sub-conductive layers 331 arranged in an array on the printed circuit board 30, the plurality of first sub-conductive layers 321A are connected to the second sub-conductive layers 331 in a one-to-one correspondence, wherein the sub-connecting segment 3212 is electrically connected to the second sub-conductive layers 331.

In this embodiment, the plurality of binding terminals 221 are connected to the second sub-conductive layers 331 in a one-to-one correspondence, the orthographic projections of the plurality of binding terminals 221 on the printed circuit board 30 cover the plurality of second sub-conductive layers 331, and the binding terminals 221 are electrically connected to the sub-connecting segments 3212 through the second sub-conductive layers 331.

Specifically, in this embodiment, the second conductive paste 52 includes a plurality of second sub-conductive pastes 521 corresponding to the plurality of second sub-conductive layers 331 one to one, and the second sub-conductive layers 331 are electrically connected to the binding terminals 221 through the second sub-conductive pastes 521; the orthogonal projection of the second sub-conductive adhesive 521 on the printed circuit board 30 covers the second sub-conductive layer 331, so that the second sub-conductive layer 331 is isolated from the environment such as water vapor and static electricity, and the stability of the product in the use stage is further improved.

It should be noted that, in this embodiment, the binding terminal 221 is a first gold finger on the flexible circuit board 20, the second sub-conductive layer 331 is a second gold finger on the printed circuit board 30, and in the display module 1, the first gold finger on the flexible circuit board 20 and the second gold finger on the printed circuit board 30 are bound by hot pressing, so that the flexible circuit board 20 and the printed circuit board 30 are electrically connected.

In this embodiment, the printed circuit board 30 further includes components (not shown), including but not limited to resistors, capacitors, inductors, potentiometers, transformers, diodes, and transistors; one of the resistor, the capacitor, the inductor, the potentiometer, the transformer, the diode and the transistor is electrically connected to any one of the first sub-conductive layers 321A, the first sub-conductive layer 321A is a signal input line of the printed circuit board 30, and the signal input line is electrically connected to the first gold finger through the second gold finger, so that transmission of an external electrical signal and the display panel 10 is realized.

This embodiment provides a mobile terminal, mobile terminal includes terminal main part and the display module assembly 1 of any above-mentioned embodiment, the terminal main part with the combination of display module assembly 1 is as an organic whole.

It is understood that the display module 1 has been described in detail in the above embodiments, and the description is not repeated here.

In specific application, the mobile terminal can be a display screen of a smart phone, a tablet computer, a notebook computer, an intelligent bracelet, an intelligent watch, intelligent glasses, an intelligent helmet, a desktop computer, an intelligent television or a digital camera and the like, and can even be applied to an electronic device with a flexible display screen.

The application provides a display module, which comprises a display panel, a flexible circuit board and a printed circuit board, wherein the printed circuit board is electrically connected with the display panel through the flexible circuit board; one side of the flexible circuit board close to the printed circuit board comprises a binding terminal group electrically connected with the printed circuit board; the printed circuit board at least comprises a first conductive layer electrically connected with the binding terminal group and an insulating layer arranged between the first conductive layer and the binding terminal group; the first conducting layer comprises a first main body and an exposed connecting section for connecting the first main body and the binding terminal group, and the insulating layer is arranged on the first main body and covers the first main body; the orthographic projection of the binding terminal group on the printed circuit board covers the orthographic projection of the connecting section on the printed circuit board, so that the hidden troubles of corrosion, damage and the like caused by the fact that the first main body of the first conducting layer is exposed outside when the printed circuit board is in environments of moisture, salt mist and the like in the prior art are avoided.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display module and the mobile terminal provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.