CN112837623A

CN112837623A - Display module and electronic equipment

Info

Publication number: CN112837623A
Application number: CN202110221086.0A
Authority: CN
Inventors: 蒲乾林; 梁恒镇
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-05-25
Anticipated expiration: 2041-02-26
Also published as: CN112837623B

Abstract

The embodiment of the invention provides a display module and electronic equipment, relates to the technical field of display, and aims to solve the problem that the communication performance of the electronic equipment is influenced when the anti-static interference capability of a display screen is improved by the electronic equipment. The display module comprises a touch layer, a display screen, a conductive layer, an insulating layer and a grounding layer. The touch layer and the display screen are arranged in a laminated mode; the conducting layer is arranged between the touch layer and the display screen; the insulating layer is arranged between the touch layer and the conductive layer; the ground layer is disposed on a side of the display screen away from the conductive layer, and the conductive layer is coupled to the ground layer.

Description

Display module and electronic equipment

Technical Field

The invention relates to the technical field of display, in particular to a display module and electronic equipment comprising the same.

Background

With the popularization of electronic devices such as mobile phones and tablet computers, people have higher dependence on the electronic devices, and particularly some mobile game enthusiasts often play mobile games for several hours continuously. Since the user's finger is constantly sliding on the display screen surface while playing a hand game, a large amount of frictional static electricity is accumulated. Static electricity accumulated on the display screen can generate an induction electric field in the display panel, and further causes abnormal display of the display screen.

In the prior art, a metal ground terminal is disposed in a casing of an electronic device at a position close to a display screen, and the metal ground terminal can transfer static electricity to a conductive casing, so as to release the static electricity generated by the display screen. However, for an electronic device having a communication function, the conductive housing may affect the communication performance of the electronic device.

Disclosure of Invention

The embodiment of the invention provides a display module and electronic equipment, which are used for solving the problem that the communication performance of the electronic equipment is influenced when the anti-static interference capability of a display screen is improved by the electronic equipment.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a display module is provided, which includes a touch layer, a display screen, a conductive layer, an insulating layer, and a ground layer. The touch layer and the display screen are arranged in a laminated mode; the conducting layer is arranged between the touch layer and the display screen; the insulating layer is arranged between the touch layer and the conductive layer; the ground layer is disposed on a side of the display screen away from the conductive layer, and the conductive layer is coupled to the ground layer.

In some embodiments, the display module further includes a connecting member, and the conductive layer is coupled to the ground layer through the connecting member.

In some embodiments, the connector is a flexible circuit board.

In some embodiments, the flexible circuit board includes a first connection pattern and a second connection pattern coupled. The first connection pattern is coupled to the conductive layer, and the second connection pattern is coupled to the ground layer.

In some embodiments, the display screen includes a signal layer including a signal terminal, the conductive layer is coupled to the signal terminal, and the signal terminal is bonded to the first connection pattern.

In some embodiments, the display screen is a flexible display screen, and an edge of the flexible display screen, where the signal end is disposed, is bent, so that the signal end is located on a side of the ground layer away from the touch layer.

In some embodiments, the display module further includes a conductive adhesive layer, and the second connection pattern is adhered to the ground layer through the conductive adhesive layer.

In some embodiments, the conductive layer is an indium tin oxide layer or a metal mesh.

In some embodiments, the ground layer is a metal layer.

In a second aspect, an electronic device is provided, which includes the display module according to any of the embodiments.

The embodiment of the invention enables the conductive layer and the grounding layer to be electrically connected into a whole by arranging the conductive layer between the display screen and the touch layer and coupling the conductive layer and the grounding layer in the display module. Therefore, a loop formed by the conductive layer and the ground layer can form a 'shielding cover', the display screen is wrapped in the 'shielding cover', the display screen can not be interfered by external static electricity, and the electrostatic shielding effect is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an electronic device according to some embodiments of the invention.

Fig. 2 is a display module according to some embodiments of the present invention.

Fig. 3 is a stacked structure diagram of the touch display screen of the display module shown in fig. 2.

Fig. 4 is a stacked structure diagram of a display module according to some embodiments of the invention.

Fig. 5 is a laminated structure diagram of a flexible circuit board of a display module according to some embodiments of the present invention.

Fig. 6 is another stacked structure diagram of a flexible circuit board of a display module according to some embodiments of the invention.

Fig. 7 is a top view of a connector of a display module according to some embodiments of the present invention.

Fig. 8 is a top view of another connector of a display module according to some embodiments of the invention.

Fig. 9 is a stacked structure diagram of a display screen of a display module according to some embodiments of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.

In describing some embodiments, expressions of "coupled" and "connected," along with their derivatives, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, some embodiments may be described using the term "coupled" to indicate that two or more elements are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

"at least one of A, B and C" has the same meaning as "A, B or at least one of C," each including the following combination of A, B and C: a alone, B alone, C alone, a and B in combination, a and C in combination, B and C in combination, and A, B and C in combination.

"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.

"plurality" means at least two.

The use of "adapted to" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps.

Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.

The embodiment of the invention provides electronic equipment which can be equipment consisting of electronic components such as an integrated circuit, a transistor, an electronic tube and the like and playing a role by applying electronic technology (software), such as a computer, a mobile phone, a digital camera, a fax machine, an all-in-one machine and the like. The present invention is mainly directed to an electronic device with touch and display functions, which may exemplarily be: the portable electronic device comprises a portable computer, a tablet computer, a mobile phone, an intelligent watch, a bracelet, a Personal Digital Assistant (PDA), a Digital camera, a portable video camera, a viewfinder, a navigator, a large-area wall, information inquiry equipment, business inquiry equipment of departments such as e-government affairs, banks, hospitals, electric power and the like.

Fig. 1 illustrates a general structure of a common electronic device, taking a mobile phone as an example. The electronic device 1 includes a display module 30. Referring to fig. 1 and 2, the display module 30 may include a touch display screen 300 and a ground layer 320. The touch display screen 300 is a component having both screen display and touch control functions, and the ground layer 320 is configured to conduct out static electricity accumulated on the display module 30. In addition to this, the electronic device 1 may further include other members such as the frame 10, the cover plate 20, and the printed circuit board 40.

Referring to fig. 1, a frame 10 of the electronic device 1 is used for forming an appearance of the electronic device 1, and has a substantially U-shaped cross section, and a display module 30 or other components may be disposed in the frame 10, so that the frame 10 may also protect other components including the display module 30.

The cover plate 20 is disposed on a side of the frame 10 away from the display module 30, i.e., a side close to a light emitting surface of the display module 30. For example, referring to fig. 1, the cover plate 20 may be disposed over the display module 30 and fixed to the opening of the frame 10 by an adhesive such as foam glue, so as to cover at least a portion of the opening of the frame 10. Alternatively, referring to fig. 2, the cover plate 20 may be adhered to the display surface of the touch display screen 300 by an Optical Clear Adhesive (OCA).

The printed circuit board 40 is disposed in the accommodating space defined by the frame 10 and the display module 30, and a hardware circuit for controlling the electronic device 1 is integrated thereon.

Fig. 3 shows a stacked structure of a touch display screen 300, in which different filling lines represent different film layers. The touch display screen 300 may include: display screen 310, touch layer 330, conductive layer 340, and insulating layer 350; the touch layer 330 and the display screen 310 are stacked, and the conductive layer 340 is arranged between the touch layer 330 and the display screen 310; the insulating layer 350 is disposed between the touch layer 330 and the conductive layer 340.

The Display screen 310 of the touch Display screen 300 is mainly used for displaying images of the electronic device 1, and the Display screen 310 may be a Liquid Crystal Display (LCD), or a self-luminous Display screen or a micro LED (including a miniLED or a micro LED) Display screen. When the display screen is a self-luminous display screen, the self-luminous display screen may be an Organic Light-Emitting Diode (OLED) or a Quantum Dot self-luminous display screen (QLED).

Illustratively, when the display panel 310 is a self-luminous display panel, the display panel 310 may include a substrate 311, a driving backplane 312, a light emitting layer 313, and an encapsulation layer 314. The substrate 311 provides a basis for other structures in the display screen 310, and the driving backplane 312, the light emitting layer 313 and the encapsulation layer 314 can be fabricated on the substrate. The material of the substrate 311 may be glass, and for a flexible display screen, the material of the substrate is typically a flexible material such as PI (polyimide), PET (saturated polyester), and the like. Driving backplane 312 is configured to drive luminescent layer 313 to emit light. Driving backplane 312 may include a plurality of pixel circuits (also referred to as pixel driving circuits), light-emitting layer 313 may include a plurality of light-emitting devices, and one pixel circuit in driving backplane 312 is coupled to one light-emitting device in light-emitting layer 313 for controlling the intensity of light emitted by the light-emitting device. The encapsulation layer 314 encapsulates the light emitting device for protection, and the encapsulation layer 314 may be an encapsulation substrate or an encapsulation film. In some embodiments, the encapsulation layer 314 includes at least one organic encapsulation layer and one inorganic encapsulation layer, the inorganic encapsulation layer primarily functions as a barrier to water and oxygen ingress, and the organic encapsulation layer functions as an auxiliary encapsulation and planarization layer. The organic packaging layer can be made of organic materials such as acrylic-based polymers and silicon-based polymers.

The touch layer 330 of the touch display screen 300 is used to input a touch signal from the outside, for example, the touch signal may be a click signal of a finger of a user or a fingerprint image of the user. The touch layer 330 is stacked with the display screen 310 in the touch display screen 300, wherein the touch layer 330 may be disposed on one side of the display screen 310, for example, when the display screen 310 is a self-luminous display screen, the touch layer 330 may be disposed on one side of a light emitting surface of the display screen 310; in addition, the touch layer 330 may also be disposed inside the display screen 310, for example, In the case that the display screen 310 is a liquid crystal display screen, the touch layer 330 may be embedded In the liquid crystal layer (i.e., In cell), or the touch layer 330 may be disposed between the color film substrate and the upper polarizer (i.e., On cell).

Referring to fig. 3, the touch layer 330 includes a first touch electrode layer 331 and a second touch electrode layer 333, wherein one of the first touch electrode layer 331 and the second touch electrode layer 333 may be a metal mesh layer, and the other may be a bridge metal layer, an insulating layer 332 is disposed between the two touch electrode layers, and a via hole is disposed on the insulating layer 332 to couple the metal mesh layer and the bridge metal layer, thereby forming a self-capacitance touch electrode. In some embodiments, one touch electrode layer may be used as an emitting electrode layer, and the other touch electrode layer may be used as a sensing electrode layer, which are separated by an insulating layer, to form a mutual capacitance type touch electrode. The detailed structure is not described herein. Further, the touch layer 330 may further include a protection layer 334 covering a side of the second touch electrode layer 333 away from the display screen 310, where the protection layer 334 may protect the touch electrode layer, and the protection layer 334 may be made of an organic material.

In some embodiments, the touch Layer 330 may be directly formed On the display screen 310 through a continuous process after the display screen 310 is formed, for example, in a case that the display screen 310 is an organic self-luminous display screen, the touch Layer 330 may be disposed On an encapsulation Layer of the OLED display screen through a touch display integration (FMLOC) technology, where the FMLOC process is to fabricate a Metal mesh electrode Layer On an encapsulation substrate of the display screen 330 for touch control, the process may reduce the thickness of the screen, and is beneficial to design of a folding screen, however, in order to prevent the encapsulation Layer 314 from being damaged when the touch Layer 330 is formed On the encapsulation Layer 314, before the touch Layer 330 is formed On the encapsulation Layer 314, a substrate Layer may be formed On the encapsulation Layer 314. In other embodiments, the touch layer 330 may also be formed as a separate element, and the touch layer 330 may be adhered to the display screen 310 by an adhesive layer. In the case where the touch layer 330 is formed as a separate element (e.g., a separate film layer), the touch layer 330 may further include a carrier film for carrying the touch electrode.

The display screen 310 of the touch display screen 300 may be flexible or rigid. In the case that the display screen 310 is a flexible touch display screen, the display screen 310 may be bent, and the touch layer 330 may be disposed only on an unbent area of the flexible display screen 310, or may extend to a bent area of the flexible display screen 310 and be bent together with the flexible display screen 310.

In addition, the touch display screen 300 further includes a conductive layer 340 and an insulating layer 350 disposed between the display screen 310 and the touch layer 330, wherein the conductive layer 340 is disposed between the display screen 310 and the touch layer 330 and close to the display screen 310, the insulating layer 350 is disposed between the touch layer 330 and the conductive layer 340, and the insulating layer 350 is used for separating the conductive layer 340 from the first touch electrode layer 331 of the touch layer 330 and preventing short circuit. In order to make the conductive layer 340 not obstruct normal display of the display panel 310, the conductive layer 340 may be made of a transparent material, for example, in a self-luminous display panel, the conductive layer 340 may be an indium tin oxide layer (ITO layer for short), and in an LCD display panel, the conductive layer 340 may be a metal mesh layer.

The ground layer 320 of the display module 30 is disposed on a side of the display screen 310 away from the conductive layer 340, and the ground layer 320 can conduct static electricity out, so that static electricity does not accumulate on the ground layer 320. The ground layer 320 needs to be coupled to the conductive layer 340 of the touch display screen 300, and when the conductive layer 340 is coupled to the ground layer 320, the conductive layer 340 and the ground layer 320 are electrically connected to form a whole. Therefore, the loop formed by the conductive layer 340 and the ground layer 320 can form a "shielding case" which encloses the display screen 310, so that the display screen 310 can not be interfered by external static electricity and has an electrostatic shielding effect.

Specifically, when the user uses the electronic device 1, the user's finger slides back and forth over the touch layer 330 of the touch display screen 300, and then the charges generated by friction are accumulated to form a micro electric field, and the transmission of the display signal of the display screen 310 is affected by the micro electric field, thereby causing poor display. When the display screen 310 is wrapped in the "shielding case" formed by coupling the conductive layer 340 and the ground layer 320, charges generated by sliding friction of the user's finger are blocked outside the "shielding case", and even if charges are accumulated on the outer wall of the "shielding case", for example, the charges are accumulated on the conductive layer 340, the accumulated charges can be timely conducted out through the ground layer 320, so that a micro electric field cannot be formed, and thus the display of the display screen 310 cannot be affected by static electricity.

In some embodiments, the display module 30 further includes a connecting member 370, for example, the connecting member 370 may be a flat cable. Referring to fig. 4, the ground layer 320 and the conductive layer 340 may be coupled by a connection 370.

In some embodiments, the connector 370 is a flexible circuit board. Referring to fig. 5 and 6, a general laminate structure of a flexible circuit board is shown. Referring first to fig. 5, the flexible circuit board may include a base film 321, a conductive film 323 disposed on opposite sides of the base film 321, an adhesive layer 322 for adhering the base film 321 and the conductive film 323, and a cover film 324 disposed on a side of the conductive film 323 away from the base film 321 for protecting the conductive film 323. Such a flexible circuit board including two layers of the conductive film 323 is referred to as a double-layer flexible circuit board.

In other embodiments, the conductive film 323 may be disposed only on either side of the base film 321, and referring to fig. 6, the flexible circuit board may include the base film 321, the conductive film 323 disposed on one side of the base film 321, an adhesive layer 322 for bonding the base film 321 and the conductive film 323, and a cover film 324 disposed on opposite sides of the conductive film 323 and the base film 321 for protecting the conductive film 323. Such a flexible circuit board including a conductive film 323 is referred to as a single-layer flexible circuit board.

When the connecting member 370 of the display module 30 is a flexible circuit board, the connecting member 370 may be any flexible circuit board with an electrical connection function, and the flexible circuit board may be a single-layer flexible circuit board or a double-layer flexible circuit board.

The conductive film 323 of the flexible circuit board has conductivity, and various conductive patterns can be formed thereon. Illustratively, fig. 7 shows a top view of a flexible circuit board having an electrical connection function, on a conductive film of which a connection pattern 323a and a connection pattern 323b for coupling with other members are formed, one connection pattern may include a plurality of connection pins, each of the connection pins may have a different shape and size, and an arrangement of the plurality of pins in the one connection pattern may be adjustable. When the conductive pattern formed on the conductive film of the flexible circuit board is a connection pattern for coupling with other components, the cover film at the position of the connection pattern needs to be removed on the side of the flexible circuit board to which the other components are coupled to expose the connection pattern so that the connection pattern is in direct contact with the member to be coupled. When the connection pattern is coupled with other members, the connection pattern may be coupled on a conductor portion of the member, for example, on a connection pin of the member.

In addition, the conductive pattern of the flexible circuit board may also be a connection line 323c for connecting other conductive patterns on the conductive film, for example, the connection line 323c may connect two connection patterns on the flexible circuit board, specifically, the connection line 323c is connected to connection pins of the connection patterns, where one connection pin of one connection pattern is connected to one connection line 323c, and signals transmitted by connection lines led out from different connection pins may be different. When the flexible circuit board is a double-layer flexible circuit board, the wiring 323c may also be formed on a conductive film of a different layer of the flexible circuit board.

In some embodiments, the flexible circuit board as the connection member 370 may include a first connection pattern and a second connection pattern coupled thereto, wherein the first connection pattern is coupled with the conductive layer 340 and the second connection pattern is coupled with the ground layer 320. Exemplarily, referring to fig. 7, the first connection pattern 323a and the second connection pattern 323b provided on the flexible circuit board are coupled therebetween by a connection line 323 c. When the first connection pattern 323a is coupled with the conductive layer 340, since the conductive layer 340 has conductivity, the first connection pattern 323a may be coupled by direct contact with the conductive layer 340, for example, a flexible circuit board is directly soldered to the conductive layer 340 through the first connection pattern 323a, or the first connection pattern 323a may also be indirectly coupled with the conductive layer 340, for example, a conductive adhesive is coated on the first connection pattern 323a, and the flexible circuit board is adhered to the conductive layer 340, so as to achieve coupling of the first conductive pattern 323a with the conductive layer 340. Similarly, the second connection pattern 323b may also be coupled with the ground layer 320 in the above manner, which is not described herein again.

The display module 30 of the electronic device 1 further includes a flexible circuit board 360. The flexible circuit board 360 includes at least one connection pattern for coupling with the display module 30.

Illustratively, the connection pattern of the flexible circuit board 360 is coupled on a signal layer of the display screen 310. The signal layer of the display screen 310 includes a plurality of driving control signals for controlling the image display of the display screen 310, and the plurality of driving control signals are collected into a plurality of signal terminals on the signal layer, and the connection pattern of the flexible circuit board 360 may be bound with the signal terminals in the signal layer of the display screen 310.

For example, the signal layer of the display panel 310 is a source/drain layer (SD layer for short), the SD layer may be a first pattern layer including a plurality of first patterns, and the plurality of first patterns include data lines. The "pattern layer" may be a layer structure including a specific pattern formed by performing a patterning process on at least one film layer using the same film forming process and then using the same mask. Depending on the specific pattern, the same patterning process may include a plurality of photoresist coating, exposing, developing or etching processes, and the specific pattern in the layer structure may be continuous or discontinuous, and may be at different heights or have different thicknesses. In addition, the SD layer may be a second pattern layer including a plurality of second patterns, the second pattern layer and the first pattern layer are two pattern layers, and at least one of the second patterns is coupled to the first pattern.

In some embodiments, the connector 370 of the display module 30 is a flexible circuit board 360. Referring to fig. 8, the flexible circuit board 360 includes a first connection pattern 323a for coupling with the display screen 310, and the first connection pattern 323a may be bound with a signal terminal of the display screen 310. The conductive layer 340 is coupled with a signal terminal of the display screen 310 in the touch display screen 300, so that the conductive layer 340 is indirectly coupled with the flexible circuit board 360. Illustratively, the conductive layer 340 may be coupled to a signal terminal of the display screen 310 through a signal layer of the display screen 310. For example, in an organic self-emissive display, the conductive layer 340 may be an ITO layer, the signal layer of the display 310 may be an SD layer, and other insulating layers are spaced between the ITO layer and the SD layer, for example, a planarization layer (PLN layer), a pixel definition layer (PDL layer), etc., the ITO layer may be punched to the SD layer, see fig. 9, and after punching, the ITO layer may be in contact with the signal terminal of the SD layer at the hole position.

In the above embodiment, the flexible circuit board 360 further includes the second connection pattern 323b for coupling with the ground layer 320 of the display module 30. The shape of the second connection pattern 323b may be a closed pattern, or may be formed by a plurality of closed patterns.

In some embodiments, the display module 30 further includes a conductive adhesive layer 380 through which the second connection pattern 323b is adhered to the ground layer 320. Exemplarily, referring to fig. 8, the conductive adhesive layer 380 is covered on the second connection pattern 323b of the flexible circuit board 360, wherein the conductive adhesive layer 380 may cover a portion of the second connection pattern 323b or may cover the entire second connection pattern 323 b. The ground layer 320 is adhered to the flexible circuit board 360 through the conductive adhesive layer 380, and the second connection pattern 323b and the ground layer 320 may be coupled due to conductivity of the conductive adhesive layer 380.

In some embodiments, the flexible circuit board 360 may be bent around one edge of the touch display screen 300, when the flexible circuit board 360 is bent, one end of the flexible circuit board 360 is bound to the conductive layer 340, and the other end is bent toward the ground layer 320, at this time, the second connection pattern 323b and the conductive adhesive layer 380 thereon are just bent to a side of the ground layer 320 far away from the display screen 310, and at this time, a side of the flexible circuit board 360 where the second connection pattern 323b is exposed is just a side close to the ground layer 320, and the second connection pattern 323b may be coupled to the ground layer 320 by adhesion of the conductive adhesive layer 380.

In some embodiments, the display screen 310 is a flexible display screen, and an edge of the flexible display screen where the signal terminal is disposed is bent, so that the signal terminal is located on a side of the ground layer 320 away from the touch layer 330. Exemplarily, referring to fig. 2, the flexible display module 30 is shown, wherein the flexible display module 30 is attached to the cover plate 20 through the OCA glue, and a polarizer POL is further disposed between the OCA glue layer and the flexible display module 30. The flexible display module 30 includes a flexible touch display 300, a ground layer 320, a flexible circuit board 360, and the like, and since the flexible circuit board 360 is located on a side of the ground layer 320 far from the flexible display 310, one end of the flexible display 310 needs to be bent toward the ground layer 320 to a side of the ground layer 320 far from the display 310, so as to be coupled to the flexible circuit board 360. The flexible display 310 is provided at the coupling position with a signal terminal which can be led out from a signal layer of the flexible display 310 and is provided at one end of the flexible circuit board 360, so that the bent end of the flexible display 310 must be the end including the connection pin. In addition, the conductive adhesive layer 380 in the above embodiment is located on one side of the flexible circuit board 360 close to the ground layer 320 for adhering the exposed second connection pattern 323b to the ground layer 320.

In some embodiments, ground layer 320 is a metal layer. The metal layer may be a separate copper layer, aluminum layer, or metal alloy layer, or may also be a metal component of the display module 30. For example, in some embodiments, the display module 30 may include an ultra Clean Foam (SCF) assembly, referring to fig. 2, the SCF assembly is disposed on a side of the display screen 310 away from the light-emitting surface, and the SCF assembly may include an adhesive layer, a Foam layer, a polyimide layer, and a metal layer, wherein the adhesive layer is used to adhere the SCF structure to the display screen 310, the Foam layer has a buffering and light-shielding effect, the polyimide layer has a reinforcing effect, and the metal layer has a heat dissipation effect, and may be a copper foil, an aluminum foil, and the like, and in the SCF structure, the metal layer is generally disposed on an outermost side of the light-emitting surface of the display screen 310, that is, the metal layer is a layer farthest from the light-emitting surface of the display screen 310, and is not covered by other structures, but is exposed on a side of the display screen 310 away from the light-emitting surface. For another example, in some embodiments, the display module 30 includes a reinforcing plate on a side of the display screen 310 away from the light emitting surface, and when the reinforcing plate is a metal plate, the reinforcing plate can also serve as the ground layer 320.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A display module, comprising:

the touch control device comprises a touch control layer and a display screen, wherein the touch control layer and the display screen are arranged in a stacked mode;

the conducting layer is arranged between the touch layer and the display screen;

the insulating layer is arranged between the touch layer and the conductive layer;

a ground layer disposed on a side of the display screen distal from the conductive layer, the conductive layer coupled to the ground layer.

2. The display module of claim 1, further comprising:

a connection through which the conductive layer is coupled with the ground layer.

3. The display module of claim 2, wherein the connector is a flexible circuit board.

4. The display module of claim 3, wherein the flexible circuit board comprises: a first connection pattern and a second connection pattern coupled;

the first connection pattern is coupled with the conductive layer, and the second connection pattern is coupled with the ground layer.

5. The display module of claim 4, wherein the display screen comprises a signal layer, the signal layer comprising: a signal terminal;

the conductive layer is coupled to the signal terminal, and the signal terminal is bonded to the first connection pattern.

6. The display module according to claim 5, wherein the display screen is a flexible display screen, and an edge of the flexible display screen, at which the signal terminal is disposed, is bent, so that the signal terminal is located on a side of the ground layer away from the touch layer.

7. The display module of claim 4, further comprising:

a conductive adhesive layer; the second connection pattern is adhered to the ground layer through the conductive adhesive layer.

8. The display module of claim 1, wherein the conductive layer is an indium tin oxide layer or a metal mesh.

9. The display module of claim 1, wherein the ground layer is a metal layer.

10. An electronic device, comprising: the display module of any one of claims 1 to 9.