Display device and intelligent terminal

Abstract

The utility model provides a display device and an intelligent terminal.The display device comprises a first bending area and a second bending area which are oppositely arranged, the display device is folded twice along the first bending area and the second bending area, and the display device comprises a display screen assembly and a cover plate layer covering the display screen assembly; and the cover plate layer is provided with a patterned structure for reducing stress in the first bending area and / or the second bending area. According to the display device, the screen reliability can be improved, creases are reduced, and the failure rate is reduced.

Description

Technical Field

[0001] This application relates to the field of display device technology, specifically to a display device and a smart terminal. Background Technology

[0002] With the gradual development and maturation of flexible screen technology, foldable screens are being used more and more widely in the field of electronic devices. Most existing foldable screens are bi-fold screens, and their relatively large folded size can easily affect the portability of electronic devices. Therefore, the screen size of foldable electronic devices is somewhat limited. Electronic devices that use multiple folding methods have a larger overall thickness after folding, which affects the user experience.

[0003] In the process of conceiving and realizing this application, the inventors discovered at least the following problems: existing multi-fold screens are not reliable enough and have serious creases; multi-fold screens take into account both the compressive stress of inward folding and the tensile stress of outward folding, which poses a high challenge to screen design and results in a high failure rate; multi-fold screens require thinner screens and smaller bending radii, which poses an even greater challenge to screen design.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this application is to provide a display device that can improve screen reliability, reduce creases, and reduce failure rate.

[0006] To solve the above-mentioned technical problems, this application provides a display device, including a first bending area and a second bending area disposed opposite to each other. The display device is folded twice along the first bending area and the second bending area. The display device includes a display screen assembly and a cover plate layer covering the display screen assembly. The cover plate layer is provided with a stress-reducing patterned structure in the first bending area and / or the second bending area.

[0007] Optionally, the cover plate layer includes a base layer and a first adhesive layer. The base layer includes a first surface and a second surface disposed opposite to each other. The first adhesive layer is disposed on the first surface, and the first adhesive layer has the patterned structure in the first bending area.

[0008] Optionally, the first adhesive layer does not have the patterned structure in the second bending area.

[0009] Optionally, the base layer forms a first groove in the second bending area to reduce stress, and the first adhesive layer partially fills the first groove.

[0010] Optionally, the first groove is an arc-shaped groove.

[0011] Optionally, the cover plate layer further includes a second adhesive layer disposed on the second surface.

[0012] Optionally, the second adhesive layer has the patterned structure in the second bending region.

[0013] Optionally, the base layer has a second groove in the first bending area to reduce stress, and the second adhesive layer partially fills the second groove.

[0014] Optionally, the second groove is an arc-shaped groove.

[0015] Optionally, the patterned structure includes a plurality of first grooves, which extend along the width direction of the display device and are arranged at intervals along the length direction of the display device.

[0016] Optionally, the patterned structure includes a plurality of second grooves, which are arranged at intervals along the width direction of the display device, and each second groove is cross-connected with each first groove.

[0017] Optionally, each of the first grooves and / or each of the second grooves is formed by a combination of multiple perforations.

[0018] Optionally, the shape of each perforation can be any one of a circle, rectangle, or trapezoid.

[0019] Optionally, the display device further includes a protective layer covering the cover plate layer.

[0020] Optionally, the display assembly includes a support layer, a buffer layer, and a display layer stacked sequentially, with the cover layer covering the display layer.

[0021] Optionally, the support layer includes a first full-etched area and two first half-etched areas located on both sides of the first full-etched area in the first bending region. The first full-etched area is provided with a plurality of patterned first through holes, each of which penetrates the support layer. Each first half-etched area is provided with a plurality of patterned first thinning holes, each of which does not penetrate the support layer.

[0022] Optionally, the support layer includes a second full-etched area and two second half-etched areas located on both sides of the second full-etched area in the second bending region. The second full-etched area is provided with a plurality of patterned second through holes, each of the second through holes penetrating the support layer. Each second half-etched area is provided with a plurality of patterned second thinning holes, each of the second thinning holes not penetrating the support layer.

[0023] This application also relates to a smart terminal, including the aforementioned display device.

[0024] The display device of this application has two bending directions and two bending areas (a first bending area and a second bending area). The two bending areas of the Z-shaped folding display device are subjected to different forces, with the first bending area subjected to compressive or tensile stress and the second bending area subjected to tensile or compressive stress. Therefore, the failure modes of the two bending areas are also different. The cover layer of the display device of this application has a patterned structure to reduce stress in the first bending area and / or the second bending area, which can significantly improve screen reliability (impact resistance, bending resistance) and reduce creases (less than 100um). It can solve the balance between compressive and tensile stresses in the inward and outward folds, reduce the adverse effects of internal stress, and reduce the failure rate. Moreover, the display device of this application can achieve a thinner and lighter design, meeting the requirements of ultra-thin and light devices.

[0025] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0027] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application;

[0028] Figure 2 A communication network system architecture diagram provided for an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the display device of the first embodiment of this application in its unfolded state;

[0030] Figure 4 This is a schematic diagram of the display device of the first embodiment of this application in a folded state;

[0031] Figure 5 This is a schematic diagram of the display device of the first embodiment of this application in a bent state;

[0032] Figure 6 This is a schematic diagram of the cover plate layer in the unfolded state according to the first embodiment of this application;

[0033] Figure 7This is a top view of the cover plate layer according to an embodiment of this application;

[0034] Figure 8 This is a top view of the cover plate layer according to another embodiment of this application;

[0035] Figure 9 This is a schematic diagram of the cover plate layer in the unfolded state according to the second embodiment of this application;

[0036] Figure 10 This is a schematic diagram of the cover plate layer in the unfolded state according to the third embodiment of this application;

[0037] Figure 11 This is a schematic diagram of the cover plate layer in the unfolded state according to the fourth embodiment of this application.

[0038] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Optionally, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which needs to be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0041] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0042] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0043] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0044] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0045] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0046] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include smart terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0047] The following description will use a smart terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminals.

[0048] Figure 1 For a hardware structure diagram of a mobile terminal that implements various embodiments of this application, please refer to... Figure 1 This is a schematic diagram of the hardware structure of a smart terminal implementing various embodiments of this application. The smart terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The smart terminal structure shown does not constitute a limitation on the smart terminal. A smart terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0049] The following is combined with Figure 1 A detailed introduction to each component of the smart terminal:

[0050] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, and a duplexer. Furthermore, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), and 5G, etc.

[0051] WiFi is a short-range wireless transmission technology. Smart terminals, through the WiFi module 102, can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a smart terminal and can be omitted as needed without changing the essence of the invention.

[0052] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the smart terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the smart terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0053] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0054] The smart terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the panel 1061 according to the ambient light level, and the proximity sensor can turn off the panel 1061 and / or backlight when the smart terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that can also be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0055] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0056] User input unit 107 can be used to receive input digital or character information, and generate key signal inputs related to user settings and function control of the smart terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands sent by processor 110. In addition, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0057] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the smart terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the smart terminal. The specific implementation is not limited here.

[0058] Interface unit 108 serves as an interface through which at least one external device can connect to smart terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within smart terminal 100, or it may be used to transmit data between smart terminal 100 and the external device.

[0059] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0060] The processor 110 is the control center of the smart terminal. It connects various parts of the smart terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the smart terminal, thereby providing overall monitoring of the smart terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0061] The smart terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system.

[0062] although Figure 1 As not shown, the smart terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0063] To facilitate understanding of the embodiments of this application, the communication network system on which the smart terminal of this application is based is described below.

[0064] Please see Figure 2 , Figure 2 This application provides a communication network system architecture diagram. The communication network system is an LTE system based on the universal mobile communication technology. The LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.

[0065] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.

[0066] E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Optionally, eNodeB2021 can connect to other eNodeB2022 via backhaul (e.g., X2 interface), and eNodeB2021 connects to EPC203, providing access from UE201 to EPC203.

[0067] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gateway) 2034, PGW (Packet Data Network Gateway) 2035, and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).

[0068] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0069] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.

[0070] Based on the above-described intelligent terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0071] First Embodiment

[0072] Figure 3 This is a schematic diagram of the display device of the first embodiment of this application in its unfolded state. Figure 4 This is a schematic diagram of the display device of the first embodiment of this application in a folded state. Figure 5 This is a schematic diagram of the display device of the first embodiment of this application in a bent state. Figure 6 This is a schematic diagram of the cover plate layer in the unfolded state according to the first embodiment of this application. Please refer to it. Figures 3 to 6 The display device 10 includes a first bending region 10a and a second bending region 10b disposed opposite to each other. The display device 10 folds twice along the first bending region 10a and the second bending region 10b. The display device 10 includes a display screen assembly 12 and a cover layer 13 covering the display screen assembly 12. The cover layer 13 has a patterned structure 15 for reducing stress in the first bending region 10a and / or the second bending region 10b. In this embodiment, the display device 10 is a tri-fold display, capable of Z-shaped folding or G-shaped folding. The first bending region 10a and the second bending region 10b of the display device 10 refer to the areas where the display device 10 bends in the thickness direction when it is bent and folded.

[0073] The display device 10 of this application has two bending directions and two bending areas (first bending area 10a and second bending area 10b). The two bending areas of the Z-shaped folding display device 10 are subjected to different forces. The first bending area 10a is subjected to compressive or tensile stress, while the second bending area 10b is subjected to tensile or compressive stress. Therefore, the failure modes of the two bending areas are also different. The cover layer 13 of the display device 10 of this application has a patterned structure 15 for reducing stress in the first bending area 10a and / or the second bending area 10b, which can significantly improve screen reliability (impact resistance, bending resistance) and reduce creases (less than 100um). It can solve the balance between compressive and tensile stresses in inward and outward folds, reduce the adverse effects of internal stress, and reduce the failure rate. Moreover, the display device 10 of this application can achieve a thinner and lighter design, meeting the requirements of ultra-thin and light devices.

[0074] Optionally, such as Figure 6 As shown, the cover layer 13 includes a base layer 131 and a first adhesive layer 132. The base layer 131 includes a first surface 1311 and a second surface 1312 disposed opposite to each other. The first adhesive layer 132 is disposed on the first surface 1311. The first adhesive layer 132 has a patterned structure 15 in the first bending region 10a (as shown on the left side of the figure), and the patterned structure 15 penetrates through the first adhesive layer 132. In this embodiment, the material of the base layer 131 is flexible glass, such as UTG or UFG (Unequal-thickness Foldable glass).

[0075] Optionally, the first adhesive layer 132 is a polymer. The first adhesive layer 132 can absorb part of the impact force and has a good buffering effect, which can protect the cover layer 13 and the display screen assembly 12 below it, and is conducive to improving the reliability of the display device 10. Moreover, the first adhesive layer 132 can achieve planarization, and the rebound force of the cover layer 13 can be adjusted by adjusting the modulus of the first adhesive layer 132.

[0076] Optionally, such as Figure 6 As shown, the first adhesive layer 132 does not have a patterned structure 15 in the second bending region 10b (as shown on the right side of the figure).

[0077] Optionally, Figure 7 This is a top view of the cover plate layer according to an embodiment of this application, as shown below. Figure 7 As shown, the patterned structure 15 includes multiple first grooves 151, which extend along the width direction of the display device 10 and are arranged at intervals along the length direction of the display device 10.

[0078] Optionally, Figure 8 This is a top view of the cover plate layer according to another embodiment of this application, as shown below. Figure 8 As shown, the patterned structure 15 includes multiple second grooves 152, which are arranged at intervals along the width direction of the display device 10, and each second groove 152 is cross-connected with each first groove 151.

[0079] Optionally, each first groove 151 and / or each second groove 152 is formed by a combination of multiple perforations, and the shape of each perforation can be circular, rectangular or trapezoidal, which can be freely designed according to actual needs.

[0080] Optionally, the display device 10 also includes a protective layer 14 that covers the cover plate layer 13.

[0081] Optionally, the display assembly 12 includes a support layer 121, a buffer layer 122, and a display layer 123 stacked sequentially, with a cover layer 13 covering the display layer 123. In this embodiment, the support layer 121 is made of one of the following materials: titanium alloy, stainless steel, titanium alloy, carbon fiber, or composite material; the buffer layer 122 is, for example, an adhesive layer used to bond the display layer 123 to the support layer 121; the display layer 123 is a flexible display panel (OLED) capable of being folded along the bending area.

[0082] Optionally, the support layer 121 includes a first full-etched area and two first half-etched areas located on both sides of the first full-etched area in the first bending region 10a. The first full-etched area is provided with a plurality of patterned first through holes, each of which penetrates the support layer 121. Each first half-etched area is provided with a plurality of patterned first thinning holes, each of which does not penetrate the support layer 121.

[0083] Optionally, the support layer 121 includes a second full-etched area and two second half-etched areas located on both sides of the second full-etched area. The second full-etched area is provided with a plurality of patterned second through holes, each of which penetrates the support layer 121. Each second half-etched area is provided with a plurality of patterned second thinning holes, each of which does not penetrate the support layer 121.

[0084] Optionally, the display device 10 includes a housing (not shown) in which the display assembly 12 is mounted.

[0085] Second Embodiment

[0086] Figure 9 This is a schematic diagram of the cover plate layer in the unfolded state according to the second embodiment of this application, as shown below. Figure 9 As shown, the display device 10 of this embodiment has a structure that is generally the same as that of the display device 10 of the first embodiment, except that the local structure of the cover plate layer 13 is different.

[0087] Optionally, the base layer 131 forms a first groove 301 in the second bending area 10b to reduce stress, and the first adhesive layer 132 partially fills the first groove 301. In this embodiment, the first groove 301 of the base layer 131 not only reduces the rebound force of the base layer 131, which is beneficial to the hovering of the display device 10 and the reliability of the screen, but also reduces the bending radius of the base layer 131, which is beneficial to the thinning of the display device 10, and reduces creases, thereby improving the user experience.

[0088] Optionally, the first groove 301 is an arc-shaped groove.

[0089] Third Embodiment

[0090] Figure 10 This is a structural schematic diagram of the cover plate layer in the unfolded state according to the third embodiment of this application, as shown below. Figure 10 As shown, the display device 10 of this embodiment has a structure that is generally the same as the display device 10 of the above embodiment, except that the local structure of the cover plate layer 13 is different.

[0091] Optionally, the cover layer 13 further includes a second adhesive layer 133, which is disposed on the second surface 1312. The second adhesive layer 133 is a polymer. The second adhesive layer 133 can absorb part of the impact force and has a good buffering effect, which can protect the cover layer 13 and the display assembly 12 below it, and is conducive to improving the reliability of the display device 10. Moreover, the second adhesive layer 133 can achieve planarization, and the rebound force of the cover layer 13 can be adjusted by adjusting the modulus of the second adhesive layer 133.

[0092] Optionally, the second adhesive layer 133 is provided with a patterned structure 15 in the second bending region 10b, and the patterned structure 15 penetrates the second adhesive layer 133.

[0093] Fourth embodiment

[0094] Figure 11 This is a structural schematic diagram of the cover plate layer in the unfolded state according to the fourth embodiment of this application, as shown below. Figure 11 As shown, the display device 10 of this embodiment has a structure that is generally the same as the display device 10 of the above embodiment, except that the local structure of the cover plate layer 13 is different.

[0095] Optionally, the base layer 131 has a second groove 302 formed in the first bending area 10a to reduce stress, and the second adhesive layer 133 partially fills the second groove 302. In this embodiment, the second groove 302 of the base layer 131 can not only reduce the rebound force of the base layer 131, which is beneficial to the hovering of the display device 10 and the reliability of the screen, but also reduce the bending radius of the base layer 131, which is beneficial to the thinning of the display device 10, and can reduce creases, thereby improving the user experience.

[0096] Optionally, the second groove 302 is an arc-shaped groove.

[0097] Fifth embodiment

[0098] This application also relates to a smart terminal, including the aforementioned display device 10.

[0099] Please refer to the above for the structure and functions of smart terminals; they will not be repeated here.

[0100] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0101] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0102] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0103] In this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions that are not described in detail later can be referred to their previous relevant detailed descriptions.

[0104] In this application, the descriptions of the various embodiments have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0105] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0106] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal, or network device, etc.) to execute the methods of each embodiment of this application.

[0107] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, storage disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0108] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A display device, characterized in that, The display device includes a first bending area and a second bending area that are arranged opposite to each other. The display device folds twice along the first bending area and the second bending area. The display device includes a display screen assembly and a cover plate layer covering the display screen assembly. The cover plate layer has a patterned structure to reduce stress in the first bending area and / or the second bending area.

2. The display device as claimed in claim 1, characterized in that, The cover plate layer includes a base layer and a first adhesive layer. The base layer includes a first surface and a second surface disposed opposite to each other. The first adhesive layer is disposed on the first surface, and the first adhesive layer has the patterned structure in the first bending area.

3. The display device as claimed in claim 2, characterized in that, Includes at least one of the following: The first adhesive layer does not have the patterned structure in the second bending area; The base layer forms a first groove in the second bending area to reduce stress, and the first adhesive layer partially fills the first groove. The first groove is an arc-shaped groove.

4. The display device as described in claim 2 or 3, characterized in that, The cover plate layer further includes a second adhesive layer disposed on the second surface.

5. The display device as claimed in claim 4, characterized in that, The second adhesive layer has the patterned structure in the second bending area.

6. The display device as claimed in claim 5, characterized in that, Includes at least one of the following: The base layer has a second groove in the first bending area to reduce stress, and the second adhesive layer partially fills the second groove. The second groove is an arc-shaped groove.

7. The display device as claimed in claim 1, characterized in that, The patterned structure includes multiple first grooves, which extend along the width direction of the display device and are arranged at intervals along the length direction of the display device.

8. The display device as claimed in claim 7, characterized in that, Includes at least one of the following: The patterned structure includes multiple second grooves, which are arranged at intervals along the width direction of the display device, and each second groove is intersected and connected to each first groove. Each of the first grooves and / or each of the second grooves is formed by a combination of multiple perforations; The shape of each perforation can be any one of a circle, rectangle, or trapezoid.

9. The display device as claimed in claim 1, characterized in that, Includes at least one of the following: The display device further includes a protective layer that covers the cover plate layer; The display assembly includes a support layer, a buffer layer, and a display layer stacked sequentially, with the cover layer covering the display layer; The support layer includes a first full-etched area and two first half-etched areas located on both sides of the first full-etched area in the first bending region. The first full-etched area is provided with a plurality of patterned first through holes, each of which penetrates the support layer. Each first half-etched area is provided with a plurality of patterned first thinning holes, each of which does not penetrate the support layer. The support layer includes a second full-etched area and two second half-etched areas located on both sides of the second full-etched area in the second bending region. The second full-etched area is provided with a plurality of patterned second through holes, each of which penetrates the support layer. Each second half-etched area is provided with a plurality of patterned second thinning holes, each of which does not penetrate the support layer.

10. A smart terminal, characterized in that, Includes the display device according to any one of claims 1 to 9.

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