WO2021082557A1

WO2021082557A1 - Display apparatus and terminal device

Info

Publication number: WO2021082557A1
Application number: PCT/CN2020/104808
Authority: WO
Inventors: 魏山山; 李健辉; 龙浩晖
Original assignee: 华为技术有限公司
Priority date: 2019-10-29
Filing date: 2020-07-27
Publication date: 2021-05-06
Also published as: CN111064829B; CN111064829A

Abstract

The present application provides a display apparatus and a terminal device. The display apparatus is applied to an unfoldable terminal device. The display apparatus comprises a substrate having a folding region, and a first display module and a second display module which are respectively arranged at two sides of the folding region. When the substrate is folded, the first display module and the second display module have opposite display directions and are respectively arranged at two opposite sides of the terminal device. The substrate is further provided with a drive circuit for driving the first display module and the second display module; and the display apparatus further comprises a camera module located at one side of the second display module. When using the display apparatus, the terminal device may have two display modules having opposite display directions, and the two display modules may perform display synchronously. A camera module is provided at one side where one of the display modules is located, and the display module at the other side only needs to perform display, so that one side of the first display module can achieve a narrow-border or borderless effect. The present invention provides the usage effect.

Description

Display device and terminal equipment

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201911036656.8, and the application name is "a display device and terminal equipment" on October 29, 2019, the entire content of which is incorporated into this application by reference .

Technical field

This application relates to the field of heat dissipation technology, and in particular to a display device and terminal equipment.

Background technique

With the gradual maturity of under-screen fingerprints, under-screen camera modules, and screen voice technology, smart phones are now gradually entering the era of truly full screens. The four sides of the screen are required to be narrow borders, and the entire front screen accounts for up to 95%. Smart phone screens are generally Organic Light-Emitting Diode (OLED) and Liquid Crystal Display (LCD). Regardless of the type of display, its borders are getting narrower and narrower to meet the needs of users with high screen-to-body ratios. Applicable and aesthetic requirements.

The narrow borders of smart phone displays have developed to this day, and the left, right, up and down sides have been very narrow, but it is difficult for straight phones to break through the blind areas such as bangs, water droplets, and digging holes brought by the front camera module that cannot be used for display. Although some manufacturers can achieve a full-screen design by virtue of the camera module design before lifting and folding, it will bring about cost increase and greater dust intake, mechanical reliability problems, and even the increase of the thickness of the whole machine and the decline of the performance of the camera module. .

Summary of the invention

The present application provides a display device and terminal equipment to improve the display effect of the display device.

In a first aspect, a display device is provided, the display device is applied to a non-folding terminal device, the display device includes a substrate, the substrate is used to carry other layer structure, wherein the substrate is divided into a carrying area and bending The number of load-bearing areas is two, and the two load-bearing areas are arranged on both sides of the bending area. Wherein, a first display module and a second display module are arranged on the substrate, and the two display modules are respectively arranged in two bearing areas in a one-to-one correspondence, and after being arranged, the first display module and the second display module The group interval is set on both sides of the bending area. When the substrate is bent, the display directions of the first display module and the second display module are opposite, and are located on opposite sides of the terminal device. In addition, a drive circuit is laminated on the substrate, and the drive circuit is used to drive the first display module and the second display module to display; in addition, the display device further includes Camera module on one side. When using the display device, the terminal device can have two display modules with opposite display directions, and the two display modules are driven synchronously by the same driving circuit, so that the two display modules can display simultaneously; One side of the display module is provided with a camera module, so that the camera module on this side can perform video, photographing and other functions, while the display module on the other side only needs to display, so that one side of the first display module The effect of narrow border or no border can be achieved. Provides the effect when the user is in use.

In a specific implementation, the bending area is covered with a protective layer for protecting the driving circuit. The driving circuit in the bending area is protected by the protective layer, which improves the safety of the driving circuit.

In a specific implementation, the bending area is provided with a through hole for mating with the external connection line of the terminal device, and the driving circuit avoids the through hole. For example, avoid the charging interface or the through hole of the earphone jack, so as to prevent the folded substrate from affecting other components in the terminal device.

In a specific implementation, the first display module and the second display module each include a touch layer. The set control layer can facilitate touch operation and improve user experience.

In a specific implementation, the substrate is provided with a first buffer layer and a second buffer layer; wherein the first buffer layer and the first display module are arranged on both sides of the substrate and Opposite arrangement; the second buffer layer and the second display module are arranged on both sides of the substrate and arranged oppositely. The substrate is protected by the provided buffer layer.

In a specific implementation solution, at least one driving chip is further included, and each driving chip is connected to the driving circuit. The first display module and the second display module are driven by the driving chip.

In a specific implementation, it further includes a first protective layer covering the first display module, and a second protective layer covering the second display module, and the second protective layer covers the Camera module. The first display module and the second display module are protected by the provided protective layer.

In a specific implementation, the first display module has at least one window, and each window is used to correspond to a sensor of the terminal device.

In a specific implementation, the sensor can be a proximity light sensor, a fingerprint sensor, and other different sensors.

In a specific implementation, the number of the first display module is at least one, and the number of the second display module is at least one.

In a second aspect, there is also provided a terminal device, which is a non-folding terminal device, the terminal device includes a middle frame, and the display device according to any one of the above; wherein the bending area of the substrate is The side walls of the middle frame are bent, and the first display module and the second display module are arranged on opposite sides of the middle frame. In the above technical solution, the terminal device may have two display modules with opposite display directions, and the two display modules are driven synchronously by the same driving circuit, so that the two display modules can display simultaneously; one of them can be used at the same time. The camera module is set on one side of the display module, so that the camera module on this side can perform video, photographing and other functions, while the display module on the other side only needs to display, so that the first display module can Achieve the effect of narrow border or no border. Provides the effect when the user is in use.

In a specific implementation, one side wall of the middle frame has an arc-shaped arc guiding surface; the substrate is bent along the arc guiding surface.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of a substrate provided by an embodiment of the application;

2 is a cross-sectional view of a display device provided by an embodiment of the application;

FIG. 3 is a cross-sectional view of a mobile terminal provided by an embodiment of the application.

Detailed ways

In order to facilitate the understanding of the display device provided by the embodiment of the present application, the following first describes its application scenarios. The display device provided by the embodiment of the present application is applied to terminal devices, such as mobile phones, tablet computers, notebook computers and other common terminal devices. With the continuous development of current terminal equipment, people have higher and higher requirements for the screen-to-body ratio (the area of the display area of the terminal device’s display screen is higher than the area of the plane where the terminal device’s display screen is set). For mobile terminals in China, due to the need to set up camera modules and sensors, the terminal device needs to set aside a part of the area to accommodate these devices, which causes the screen-to-body ratio of the terminal device to be unable to be further improved. For this reason, this application provides a display device. It will be described in detail below with reference to the drawings and specific embodiments.

As shown in FIG. 1 and FIG. 2, FIG. 1 shows a schematic diagram of the structure of a substrate provided by an embodiment of the present application, and FIG. 2 shows a schematic diagram of the layer structure of a display device provided by an embodiment of the present application. As shown in FIG. 2, the display device provided by the embodiment of the present application includes a substrate 30 for carrying a display module. Referring to FIG. 1 together, FIG. 1 shows a schematic diagram of the structure of the substrate 30, in which the substrate 30 is divided into different areas according to functions: a carrying area and a bending area 32; wherein the carrying area is used to carry the above-mentioned other layer structures, and The bending area 32 has a certain degree of flexibility and can be bent. When the above-mentioned bearing area and bending area 32 are specifically set, as shown in FIG. 3, the bearing area and the bending area 32 are arranged in a single row along the length direction of the substrate 30, and the number of the bearing area is one, and the bending area 32 The number is one. In the specific arrangement, the two load-bearing divisions are arranged on both sides of the bending area 32. For the description of the aspect, the two carrying areas are named the first carrying area 31 and the second carrying area 34 respectively.

Continuing to refer to FIG. 2, a layer of driving circuit 40 is laid on the substrate 30. The driving circuit 40 is used to supply power to the display module carried in the carrying area and control the display module to display, as provided on the driving circuit 40 There are thin film transistors, through which the pixel units of the display module can be controlled to display different colors. In addition, the driving circuit 40 is connected to at least one driving chip 60. In FIG. 2, one driving chip 60 is shown, and the driving chip 60 drives two display modules at the same time. However, it should be understood that the number of driving chips 60 is not specifically limited in the embodiment of the present application. One or two driving chips 60 can be provided as required. When two driving chips 60 are provided, the two driving chips 60 are respectively provided. There is a one-to-one correspondence with the display modules carried in the two carrying areas, and each driving chip 60 controls the corresponding two display modules through the driving circuit 40.

Continuing to refer to FIG. 1 and FIG. 2, the number of display modules provided in the embodiment of the present application is two, and the two display modules are respectively arranged in two bearing areas in a one-to-one correspondence. They are named as the first display module 10 and the second display module 20 respectively for the purpose of expression. The first display module 10 is fixedly arranged in the first carrying area 31, and the second display module 20 is fixedly arranged in the first carrying area 31. Two bearing area 34.

Continuing to refer to FIG. 2, the first display module 10 adopts an organic light-emitting display module, and its specific structure includes: a first organic light-emitting diode layer 11 disposed in the first carrying area 31, and the first organic light-emitting diode layer 11 The first thin-film encapsulation layer 12 is stacked on the layer 11, wherein the first thin-film encapsulation layer 12 is disposed on the side of the first organic light-emitting diode layer 11 away from the driving circuit 40. The first organic light-emitting diode layer 11 is electrically connected to the driving circuit 40. connection. The first display module 10 also includes a first polarizer layer and a first touch layer. As shown in FIG. 2, the first polarizer layer and the first touch layer form a first structure layer 14; and A structural layer 14 is disposed on the side of the first thin-film encapsulation layer 12 facing away from the first organic light emitting diode layer 11, and the first structural layer 14 is adhesively connected to the first thin-film encapsulation layer 12 through the first adhesive layer 13. Of course, the first display module 10 may also include only the first polarizer layer, but not the first touch control layer. In this case, the first structure layer 14 only has the function of the first polarizer layer. Or the first polarizer layer and the first touch layer can be arranged in a two-layer structure. At this time, the number of the first structure layer 14 is two, and one of the first structure layers 14 is the first polarizer layer, and the other One first structure layer 14 is a first touch layer, and the first polarizer layer and the first structure layer 14 are laminated. In addition, the first display module 10 also includes a first cover plate 16 for protecting the above-mentioned various layer structures, and the first cover plate 16 is adhesively connected to the first structure layer 14 through a second adhesive layer 15; The plate 16 can be made of glass, tempered glass or resin, and has a certain strength, so that the first cover plate 16 can serve as a first protective layer to protect the above-mentioned various layer structures. Continuing to refer to FIG. 2, along the direction away from the substrate 30, the driving circuit 40, the first organic light emitting diode layer 11, the first thin film encapsulation layer 12, the first adhesive layer 13, the first structure layer 14, and the second The adhesive layer 15 and the first cover plate 16 are arranged in sequence, and the above-mentioned layer structures are all light-transmitting structures. As mentioned above, the first adhesive layer 13 and the second adhesive layer 15 are transparent optical adhesive layers, which have good light transmission and adhesion properties.

In order to protect the first display module 10, a first buffer layer 50 is provided on the substrate 30, and the first buffer layer 50 and the first display module 10 are arranged on two sides of the substrate 30 and are arranged oppositely. As shown in FIG. 2, the first buffer layer 50 includes multiple layer structures. For example, the substrate 30 is provided with a first foam layer 52, a first graphite layer 53, and a first copper clad layer on the side facing away from the first display module 10. 51; Among them, the first graphite layer 53, the first foam layer 52 and the first copper clad layer 51 are arranged in sequence along the direction away from the first display module 10. The first display module 10 is protected by the first foam surface layer, the first wet film layer and the first copper clad layer 51 provided. Of course, it should be understood that the above-mentioned layer structure is only a specific example, and the above-mentioned layer structure is not specifically limited in the embodiment of the present application. The display device provided in the embodiment of the present application may include part of the above-mentioned layer structure, or Other layer structures with protective functions can be set. Continuing to refer to FIG. 2, when the above-mentioned multi-layer structure is set up, the various layer structures can be bonded and connected, of course, other connection methods can also be used to achieve fixed connection. When the display device is applied to terminal equipment, multiple sensor devices, such as fingerprint sensors, proximity light sensors, etc., will be set. When these devices are set, these devices are usually set under the display device. Therefore, when setting the first bubble When the cotton layer 52, the first graphite layer 53 and the first copper clad layer 51 are used, windows 54 are provided on the first foam layer 52 and the first copper clad layer 51. Two windows 54 are illustrated in FIG. 2 , And the two windows 54 respectively correspond to the proximity light sensor and the fingerprint sensor, and the size of the window 54 matches the fingerprint sensor and the proximity light sensor. Of course, the above-mentioned sensor devices do not limit the integration of common sensors such as under-screen fingerprint sensors, under-screen sound sensors, under-screen ambient light sensors, proximity light sensors, etc., on the screen.

Continuing to refer to FIG. 2, the second display module 20 also adopts an organic light-emitting display module, and its specific structure includes: a second organic light-emitting diode layer 21 disposed in the second carrying region 34, and the second organic light-emitting diode layer 21 The second thin-film encapsulation layer 22 is stacked on the diode layer 21, wherein the second thin-film encapsulation layer 22 is disposed on the side of the second organic light-emitting diode layer 21 away from the driving circuit 40, wherein the second organic light-emitting diode layer 21 and the driving circuit 40 Electric connection. The second display module 20 also includes a second polarizer layer and a second touch layer. As shown in FIG. 2, the second polarizer layer and the second touch layer are made into a second structure layer 24; and The second structure layer 24 is disposed on the side of the second thin film encapsulation layer 22 facing away from the second organic light emitting diode layer 21, and the second structure layer 24 is adhesively connected to the second thin film encapsulation layer 22 through the third adhesive layer 23. Of course, the second display module 20 may also only include the second polarizer layer, excluding the second touch layer. In this case, the second structure layer 24 only has the function of the second polarizer layer. Or the second polarizer layer and the second touch layer can be arranged in a two-layer structure. At this time, the number of the second structure layer 24 is two, and one of the second structure layers 24 is the second polarizer layer, and the other One second structure layer 24 is a second touch layer, and the second polarizer layer and the second structure layer 24 are stacked. In addition, the second display module 20 also includes a second cover plate 26 for protecting the above-mentioned various layer structures, and the second cover plate 26 is adhesively connected to the second structure layer 24 through the fourth adhesive layer 25; the second cover The plate 26 can be made of glass, tempered glass or resin, and has a certain strength, so that the first cover plate 16 can be used as a first protective layer to protect the above-mentioned various layer structures. Continuing to refer to FIG. 2, along the direction away from the substrate 30, the driving circuit 40, the second organic light emitting diode layer 21, the second thin film encapsulation layer 22, the third adhesive layer 23, the second structure layer 24, and the fourth The adhesive layer 25 and the second cover plate 26 are arranged in sequence, and the above-mentioned layer structures are all light-transmitting structures. As mentioned above, the third adhesive layer 23 and the fourth adhesive layer 25 are transparent optical adhesive layers, which have good light transmittance and adhesive properties.

When the display device is applied to terminal equipment, multiple sensor devices, such as fingerprint sensors, proximity light sensors and other devices, camera modules, etc. will be installed. When these devices are installed, these devices are usually placed under the display device. When the second cover plate 26 is provided, the size of the second cover plate 26 is larger than the area size of the second organic light emitting diode layer 21 described above. As shown in FIG. 2, the second cover plate 26 and the second organic light emitting diode layer 21 are The width gap between is D. The second cover plate 26 extends to the part outside the second organic light emitting diode layer 21 to cover the camera module. As shown in Figure 2, the second cover plate 26 is provided with a fingerprint sensor and a window corresponding to the camera module (Figure Not marked in). When the display device includes a proximity light sensor, the proximity light sensor is also provided on the second cover 26 described above.

In order to protect the second display module 20, a second buffer layer 70 is provided on the substrate 30, and the second buffer layer 70 and the second display module 20 are arranged on both sides of the substrate 30 and are arranged oppositely. As shown in FIG. 2, the second buffer layer 70 includes multiple layer structures. For example, the substrate 30 is provided with a second foam layer 72, a second graphite layer 73, and a second copper clad layer on the side facing away from the second display module 20. 71; Among them, the second graphite layer 73, the second foam layer 72 and the second copper clad layer 71 are arranged in order along the direction away from the second display module 20. The second display module 20 is protected by the second foam layer 72, the second graphite layer 73, and the second copper clad layer 71 provided. Of course, it should be understood that the above-mentioned layer structure is only a specific example, and the above-mentioned layer structure is not specifically limited in the embodiment of the present application. The display device provided in the embodiment of the present application may include part of the above-mentioned layer structure, or Other layer structures with protective functions can be set. Continuing to refer to FIG. 2, when the above-mentioned multi-layer structure is set up, the various layer structures can be bonded and connected, of course, other connection methods can also be used to achieve fixed connection.

Continuing to refer to FIG. 2, in order to ensure the safety of the driving circuit 40 in the bending area 32, the display module provided in the embodiment of the present application further includes a protective layer disposed in the bending area 32. The protective layer may be an organic protective layer 80, such as a protective layer made of different organic materials, such as resin, plastic, or other common materials with certain flexibility. In the setting, as shown in FIG. 2, the organic protective layer 80 covers the part of the driving circuit located in the bending area 32, and the organic protective layer 80 is spaced from the first display module 10 and the second display module 20 on both sides A certain gap, but it is not specifically limited in the embodiments of the present application. During preparation, the organic protective layer 80 can also directly contact the layer structures in the first display module 10 and the second display module 20.

Continuing to refer to FIG. 1, when the substrate 30 is set, the bending area 32 is provided with a through hole 33 for mating with the external connection line of the terminal device, and the driving circuit 40 avoids the through hole 33. For example, avoid the charging port or the through hole 33 of the earphone jack, so as to prevent the folded substrate 30 from affecting other components in the terminal device. When the above-mentioned display device is used, the display device needs to be bent. As shown in FIG. 3, FIG. 3 illustrates a scene when the display device is applied to a terminal device. When the display device is assembled on the terminal device, the substrate 30 is bent from The area 32 is bent, and the first display module 10 and the second display module 20 are arranged on opposite sides of the terminal device, so that the first display module 10 and the second display module 20 are opposite to each other, and the first display module 10 and the second display module 20 are opposite to each other. The display surfaces of the group 10 and the second display module 20 are also opposite to each other, and both the front and the back of the terminal device have screens. Among them, the first display module 10 serves as the main screen, and the second display module 20 serves as the secondary screen. The bending area 32 corresponds to the end of the terminal device. In order to prevent the bending area 32 from covering the end of the socket (charging excuse or earphone jack), a through hole 33 is provided in the bending area 32, as shown in FIG. 1 The number of through holes 33 is one, but the number of through holes 33 is not limited in the embodiment of the present application. When setting, one through hole 33 can be set to correspond to the sockets of all terminal devices, or Two or three through holes 33 are provided, and each through hole 33 corresponds to a socket of the terminal device.

Continuing to refer to FIG. 3, the first display module 10 is used as the main screen, and the second display module 20 is used as the secondary screen. Since the sensor corresponding to the first display module 10 only includes the fingerprint sensor 100 and the proximity light sensor 200, the first display The display area (the area of the organic light emitting diode layer) of the module 10 can be set to be relatively large, so on the side where the first display module 10 is located, the terminal device has a larger screen-to-body ratio. As for the second display module 20, the second display module 20 is relatively small due to the need to leave space for the camera module 90, but because the second display module 20 is installed on the back of the terminal device, Even if the second display module 20 is made relatively small, it does not affect the normal use of the terminal device. In addition, when the above-mentioned display device is specifically set up, the first display module 10 and the second display module 20 are carried on the same substrate 30, and two flexible display screens formed by the same driving circuit 40 are used to drive the two flexible display screens. The display modules can be displayed synchronously; at the same time, a camera module is set on one side of the display module, so that the camera module on this side can perform functions such as video and photography, while the display module on the other side only needs The display is performed, so that the side of the first display module 10 can achieve a narrow frame or no frame effect. Provides the effect when the user is in use.

Of course, the number of display modules in the present application can be adjusted as needed. For example, the number of the first display module 10 is at least one, and the number of the second display module 20 is at least one. In the terminal device, the first display module 10 and the second display module 20 are located on two opposite display surfaces. In addition, in order to facilitate the bending of the display device, the bending area only includes the flexible substrate 30 and its packaging stack, and does not include the display function layer, so that it will not affect the display module.

Continuing to refer to FIG. 2 and FIG. 3, an embodiment of the present application also provides a terminal device. The terminal device is a non-folding terminal device. The so-called non-folding refers to that the display area of the terminal device is not foldable. The terminal device includes a middle frame 300 and the display device of any one of the above; wherein, the bending area of the substrate is bent along the side wall of the middle frame 300, and one side wall of the middle frame 300 has an arc-shaped arc guiding surface 301, The substrate of the display device is bent along the arc guide surface 301, so that the display device can be bent along a set angle, and the stability of the substrate can be improved by the support of the arc guide surface 301. 3, the first display module 10 and the second display module 20 are arranged on opposite sides of the middle frame 300, so that the terminal device can have two display modules with opposite display directions, and two display modules The modules are driven synchronously by the same driving circuit, so that the two display modules can display simultaneously; at the same time, a camera module 90 is installed on the side where one of the display modules is located, so that the camera module on this side can perform video and photography The display module on the other side only needs to display, so that one side of the first display module 10 can achieve a narrow frame or no frame effect. Provides the effect when the user is in use.

To facilitate understanding of the terminal device provided in the embodiment of the present application, the embodiment of the present application also provides a method for preparing the terminal device.

Step 1: First prepare the substrate. The preparation process is relatively mature and does not need to be elaborated. When preparing the substrate, the number of bearing areas on the substrate is two, and the two bearing areas respectively correspond to two display areas: AA1 and AA2, and AA1 and AA2 are used for the front and back display of the mobile phone, respectively. Various drive lines are arranged between the two AA areas. This area is the wiring area and can be bent in this area. Here, according to the requirements of the whole machine, you can design the power socket avoidance hole, etc.

Step 2: Module processing. On the substrate, an organic light emitting diode layer, a thin film encapsulation layer, a polarizer layer, a touch control layer, and a cover plate are sequentially arranged, and the upper structures are sequentially cut to form a dual-screen module: the first display module and the second display Module. According to the needs of the second display module, the camera module will be assembled to open the window and rear fingerprint. The first display module can be designed to open the fingerprint window under the screen, and open the window near the light environment according to the needs.

Step 3: Assembly of the whole machine. Design a suitable whole machine architecture and process flow to assemble the dual-screen display module on the whole machine. One solution is to assemble the various parts except the screen on both sides of the middle frame and dispense glue on the upper and lower sides of the middle frame, and then buckle the display flexible circuit board and fingerprint sensor of the screen to the main board, and connect the second display module The group is attached to the rear of the mobile phone, bends at the bending place, and the first display module is bent to the front of the mobile phone and is aligned and attached. Next, the first display module and the second display module are pre-compressed and pressure-maintained to assemble the lower casing. Finally, the waterproof process of circumferential sealant is carried out.

It can be seen from the above description that in the terminal device provided by the embodiment of the present application, the front camera module may not be designed at the first display module, but only the rear camera module group and the rear screen may be designed to realize Selfie and video. to chat with. And when the display device is fixed in the terminal equipment, the lower housing part is fixed to the middle frame by screws to realize the protection and assembly of the screen bending area. In addition, the first display module and the second display module are assembled on the whole machine to be finalized and cannot be moved, which greatly improves the reliability of the screen.

The above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed in this application, which shall cover Within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A display device, applied to a non-folding terminal device, characterized by comprising: a substrate with a bending area, and a driving circuit stacked on the substrate; and further including a drive circuit arranged at intervals on both sides of the bending area of the substrate When the substrate is bent, the display directions of the first display module and the second display module are opposite, and they are located on opposite sides of the terminal device. Side; wherein, the drive circuit is used to drive the first display module and the second display module to display;

The display device also includes a camera module located at one side of the second display module.
The display device of claim 1, wherein the bending area is covered with a protective layer for protecting the driving circuit.
The display device according to claim 1, wherein the bending area is provided with a through hole for mating with an external connection line of the terminal device, and the driving circuit avoids the through hole.
4. The display device of claim 3, wherein the first display module and the second display module each comprise a touch layer.
The display device according to any one of claims 1 to 4, wherein the substrate is provided with a first buffer layer and a second buffer layer; wherein,

The first buffer layer and the first display module are arranged on both sides of the substrate and are arranged opposite to each other;

The second buffer layer and the second display module are arranged on both sides of the substrate and are arranged opposite to each other.
5. The display device according to claim 5, further comprising at least one driving chip, and each driving chip is connected to the driving circuit.
The display device according to claim 5 or 6, further comprising a first protective layer covering the first display module, and a second protective layer covering the second display module, and the The second protective layer covers the camera module.
The display device according to any one of claims 1 to 7, wherein the first display module has at least one window, and each window is used to correspond to a sensor of the terminal device.
The display device according to any one of claims 1 to 8, wherein the number of the first display module is at least one, and the number of the second display module is at least one.
A terminal device, characterized in that the terminal device is a non-folding terminal device, the terminal device includes a middle frame, and the display device according to any one of claims 1-9; wherein the bending of the substrate The area is bent along the side wall of the middle frame, and the first display module and the second display module are arranged on opposite sides of the middle frame.
The terminal device according to claim 10, wherein a side wall of the middle frame has an arc-shaped arc guiding surface; and the substrate is bent along the arc guiding surface.