Display device and intelligent terminal

Abstract

The application provides a display device and a smart terminal. The display device comprises a support plate and a display screen assembly of cooling liquid arranged on the support plate. At least one heat dissipation channel is arranged in the support plate, and the cooling liquid is arranged in the heat dissipation channel. The display screen assembly comprises at least one first area and a second area arranged around the first area. The heating temperature of the first area is greater than that of the second area. The cooling liquid corresponding to the first area in the support plate is heated and vaporized to flow to the heat dissipation channel corresponding to the second area to be liquefied to realize internal circulation heat transfer. The display device of the application can realize large-area heat exchange between two shells and solve the problem of heat dissipation of a folding display.

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] Currently, shipments of foldable smart devices are continuing to grow. However, due to the pursuit of an ultra-thin and lightweight design, the internal components are densely packed, leaving insufficient space to accommodate a complete liquid cooling system. In addition, while achieving high brightness and high refresh rates improves the visual experience, it also brings more significant temperature rise challenges. Therefore, integrating graphite sheet heat dissipation into foldable smart devices has become a necessary choice.

[0003] In developing this innovative solution, the designers noticed several key issues: Current graphite sheet bonding methods, due to the limitations of foldable devices, significantly reduce the area of ​​the graphite sheet compared to candybar phones. Furthermore, the splicing design in the hinge area results in limited heat dissipation, leading to frequent localized overheating issues and becoming a major point of concern in user feedback. Additionally, adding graphite sheets to the bending area increases stress during bending, causing the screen to bulge upwards and deform, potentially even damaging the screen encapsulation and creating black spot defects. Simultaneously, the graphite sheet bonding process in the hinge area is complex, requiring extremely high positioning precision, which increases production difficulty.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide a display device that enables large-area heat exchange between two housings, thereby solving the heat dissipation problem of foldable displays.

[0006] To address the aforementioned technical problems, this application provides a display device, including a support plate and a display screen assembly with coolant disposed on the support plate. The support plate has at least one heat dissipation channel, and coolant is disposed within the heat dissipation channel. The display screen assembly includes at least one first region and a second region disposed around the first region. The heating temperature of the first region is greater than that of the second region. The coolant in the support plate corresponding to the first region is heated and vaporized, then flows to the heat dissipation channel corresponding to the second region for liquefaction, achieving internal circulation and heat transfer.

[0007] Optionally, the display device includes at least one of the following:

[0008] The support plate includes at least three layers of support film stacked on top of each other, and the heat dissipation channel is formed between two adjacent support films;

[0009] The three support films stacked sequentially are defined as a first support film, a second support film, and a third support film. The first support film, the second support film, and the third support film are stacked sequentially. The display screen assembly is disposed on the first support film. The second support film has a patterned groove formed on its upper surface near the first support film. The first support film covers the patterned groove to form a heat dissipation channel.

[0010] Optionally, a patterned groove is formed on the lower surface of the second support film near the second support film, and the third support film covers the patterned groove to form another heat dissipation channel.

[0011] Optionally, the heat dissipation channel on the upper surface of the second support film is defined as the first heat dissipation channel, and the heat dissipation channel on the lower surface of the second support film is defined as the second heat dissipation channel; the second support film is provided with at least one through hole penetrating the upper surface and the lower surface, and the through hole connects the first heat dissipation channel and the second heat dissipation channel.

[0012] Optionally, the display device includes at least one of the following:

[0013] The thickness of the second support film is greater than the thickness of the first support film;

[0014] The thickness of the second support film is greater than the thickness of the third support film;

[0015] The thickness of the first support film is equal to the thickness of the third support film;

[0016] The first support membrane includes a first adhesive layer and a plurality of first carbon fiber bundles disposed within the first adhesive layer;

[0017] The second support membrane includes a second adhesive layer and a plurality of second carbon fiber bundles disposed within the second adhesive layer;

[0018] The third support membrane includes a third adhesive layer and multiple third carbon fiber bundles disposed within the third adhesive layer;

[0019] The first carbon fiber bundle and the third carbon fiber bundle extend along a first direction, and the second carbon fiber bundle extends along a second direction, with the first direction and the second direction forming an angle.

[0020] The included angle is a right angle.

[0021] Optionally, the support plate includes a first support portion, a second support portion, and a bent portion connecting the first support portion and the second support portion. The bent portion includes a perforated area and a non-perforated area. The heat dissipation channel includes a first array microchannel, a second array microchannel, and an intermediate channel connecting the first array microchannel and the second array microchannel. The first array microchannel is disposed within the first support portion, the second array microchannel is disposed within the second support portion, and the intermediate channel is disposed within the non-perforated area.

[0022] Optionally, the display device includes at least one of the following:

[0023] The first array microchannel includes at least two first straight channels, at least two first bends and at least two second bends. Each first straight channel is parallel to each other and spaced apart. Each first bend is connected to one end of two adjacent first straight channels. Each second bend is connected to the other end of two adjacent first straight channels. Each first bend and each second bend are at least partially offset.

[0024] The second array microchannel includes at least two second straight channels, at least two third bends and at least two fourth bends. Each second straight channel is parallel to each other and spaced apart. Each third bend is connected to one end of two adjacent second straight channels, and each fourth bend is connected to the other end of two adjacent second straight channels. Each third bend and each fourth bend are at least partially offset.

[0025] Each of the first straight sections and each of the second straight sections are parallel to each other;

[0026] Each of the first straight sections is perpendicular to each of the second straight sections.

[0027] Optionally, the display device includes at least one of the following:

[0028] The width of the first straight section is less than the width of the first curve;

[0029] The width of the first straight section is less than the width of the second curve;

[0030] The depth of the first straight section is equal to the depth of the first curve, and the depth of the first straight section is equal to the depth of the second curve;

[0031] The width of the second straight section is less than the width of the third curve;

[0032] The width of the second straight section is less than the width of the fourth curve;

[0033] The depth of the second straight section is equal to the depth of the third curve, and the depth of the second straight section is equal to the depth of the fourth curve.

[0034] Optionally, the channel density of the heat dissipation channel in the first region is greater than the channel density in the second region; and / or,

[0035] The support plate includes a first surface, a second surface, and a side surface connected between the first surface and the second surface, the side surface being covered with sealant.

[0036] This application also relates to a smart terminal, including the aforementioned display device.

[0037] The display device of this application integrates display functions and cross-axis heat dissipation functions into a foldable display, enabling large-area heat exchange between the two shells. This solves the heat dissipation problem of foldable displays, perfectly addressing the bottleneck of overall thickness caused by heat dissipation issues, and achieving a thinner and lighter overall design. The display device of this application supports a small waterdrop design, allowing heat dissipation space to be transferred to the hinge, further improving key performance aspects such as drop and folding resistance. Compared to traditional heat dissipation solutions, this application has advantages such as lower cost and higher mass production feasibility. Moreover, the display device of this application does not require additional heat dissipation film, ensuring the thinness and lightness requirements of the entire device; and the bending area of ​​the display device does not require bridging heat sinks, reducing bending stress and improving the overall reliability. In addition, the heat dissipation channel covers the entire support plate, dissipating heat from the entire back of the display assembly, resulting in a large heat dissipation area and excellent heat dissipation effect.

[0038] 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

[0039] 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.

[0040] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application;

[0041] Figure 2 A communication network system architecture diagram provided for an embodiment of this application;

[0042] Figure 3This is a schematic diagram of the display device of this application;

[0043] Figure 4 This is a top view of the internal structure of the support plate according to the first embodiment of this application;

[0044] Figure 5 This is a cross-sectional view of the support plate along its width direction according to the first embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the carbon fiber bundle structure of the support plate shown in this application;

[0046] Figure 7 This is a schematic diagram of the channel density of the support plate corresponding to the first and second regions according to an embodiment of this application;

[0047] Figure 8 This is a cross-sectional view of the support plate along its width direction according to the second embodiment of this application;

[0048] Figure 9 This is a schematic diagram of the channel density of the support plate corresponding to the first and second regions according to another embodiment of this application;

[0049] Figure 10 This is a cross-sectional view of the support plate along its width direction according to the third embodiment of this application.

[0050] 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

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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).”

[0056] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] Figure 1 For a hardware structure diagram of a mobile terminal that implements various embodiments of this application, please refer to... Figure 1This 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.

[0061] The following is combined with Figure 1 A detailed introduction to each component of the smart terminal:

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.

[0078] 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.

[0079] 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).

[0080] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0081] 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.

[0082] Based on the above-described intelligent terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0083] First Embodiment

[0084] Figure 3 This is a schematic diagram of the display device of this application. Figure 4 This is a top view of the internal structure of the support plate according to the first embodiment of this application. Figure 5 This is a cross-sectional view of the support plate along its width direction according to the first embodiment of this application, as shown below. Figure 3 , Figure 4 and Figure 5As shown, the display device includes a support plate 10 and a display screen assembly 20 with coolant disposed on the support plate 10. The support plate 10 has at least one heat dissipation channel 12, and the heat dissipation channel 12 is filled with coolant. The display screen assembly 20 includes at least one first region 21 and a second region 22 disposed around the first region 21. The heating temperature of the first region 21 is greater than the heating temperature of the second region 22. The coolant in the support plate 10 corresponding to the first region 21 is heated and vaporized, and flows to the heat dissipation channel 12 corresponding to the second region 22 for liquefaction to achieve internal circulation heat transfer.

[0085] As the temperature of the first region 21 continues to rise, the coolant surrounding the first region 21 continuously absorbs heat and begins to heat up. Part of the coolant continuously conducts heat with the low-temperature coolant in the nearby second region 22 through the capillary heat dissipation channel 12 inside the support plate 10 to achieve heat exchange and cooling. Another part of the coolant facing the first region 21 is heated and continuously evaporates to form a gaseous state, and continuously gathers and moves towards the second region 22. As the temperature of the second region 22 decreases, the vapor begins to liquefy and condense, and begins to flow back to the region facing the first region 21, thereby achieving continuous heat transfer.

[0086] The display device of this application integrates display functions and cross-axis heat dissipation functions into a foldable display, enabling large-area heat exchange between the two shells. This solves the heat dissipation problem of foldable displays and perfectly addresses the bottleneck of overall thickness caused by heat dissipation issues, achieving a thinner and lighter overall design. The display device of this application supports a small waterdrop design, allowing heat dissipation space to be transferred to the hinge, further improving key performance aspects such as drop and folding resistance. Compared to traditional heat dissipation solutions, this application has advantages such as lower cost and higher mass production feasibility. Moreover, the display device of this application does not require additional heat dissipation film, ensuring the thinness and lightness requirements of the entire device; and the bending area of ​​the display device does not require bridging heat sinks, reducing bending stress and improving the overall reliability. Furthermore, the heat dissipation channel 12 covers the entire support plate 10, dissipating heat from the entire back of the display assembly 20, thus providing a large heat dissipation area and excellent heat dissipation effect.

[0087] Optionally, such as Figure 5 As shown, the support plate 10 includes at least three layers of support film 13 stacked on top of each other, and heat dissipation channels 12 are formed between two adjacent support film layers 13. In order to prevent coolant leakage, the two adjacent support film layers 13 forming the heat dissipation channels 12 need to be laminated and molded together.

[0088] In other embodiments, the support plate 10 includes four or more support films 13, and the number of heat dissipation channels 12 is less than the number of support films 13.

[0089] Optionally, the three sequentially stacked support films 13 are defined as a first support film 13a, a second support film 13b, and a third support film 13c. The first support film 13a, the second support film 13b, and the third support film 13c are stacked sequentially. The display assembly 20 is disposed on the first support film 13a. A patterned groove is formed on the upper surface of the second support film 13b near the first support film 13a. The first support film 13a covers the patterned groove to form a heat dissipation channel 12. In this embodiment, the groove on the surface of the support film 13 is formed by CCD laser engraving.

[0090] Optionally, such as Figure 5 As shown, the thickness of the second support film 13b is greater than the thickness of the first support film 13a;

[0091] The thickness of the second support film 13b is greater than the thickness of the third support film 13c;

[0092] The thickness of the first support membrane 13a is equal to the thickness of the third support membrane 13c.

[0093] Optionally, Figure 6 This is a schematic diagram of the carbon fiber bundle structure of the support plate shown in this application, as follows: Figure 6 As shown, the first support film 13a includes a first adhesive layer 1311a and a plurality of first carbon fiber bundles 1312a disposed within the first adhesive layer 1311a. The first adhesive layer 1311a is, for example, resin.

[0094] The second support membrane 13b includes a second adhesive layer 1311b and a plurality of second carbon fiber bundles 1312b disposed within the second adhesive layer 1311b, the second adhesive layer 1311b being, for example, resin.

[0095] The third support membrane 13c includes a third adhesive layer 1311c and a plurality of third carbon fiber bundles 1312c disposed within the third adhesive layer 1311c. The third adhesive layer 1311c is, for example, resin.

[0096] The first carbon fiber bundle 1312a and the third carbon fiber bundle 1312c are arranged to extend along the first direction X, and the second carbon fiber bundle 1312b is arranged to extend along the second direction Y. The first direction X and the second direction Y form an angle.

[0097] The included angle is a right angle.

[0098] Optionally, the support plate 10 includes a first support portion 10a, a second support portion 10b, and a bent portion 10c connecting the first support portion 10a and the second support portion 10b. The bent portion 10c includes a perforated area 101c and a non-perforated area 102c. The heat dissipation channel 12 includes a first array microchannel 121, a second array microchannel 122, and an intermediate channel 123 connecting the first array microchannel 121 and the second array microchannel 122. The first array microchannel 121 is disposed in the first support portion 10a, the second array microchannel 122 is disposed in the second support portion 10b, and the intermediate channel 123 is disposed in the non-perforated area 102c.

[0099] Optionally, such as Figure 5 As shown, the perforated area 101c is provided with patterned perforations and patterned grooves. The perforations penetrate the support plate 10, while the grooves do not penetrate the support plate 10.

[0100] Optionally, the first array microchannel 121 includes at least two first straight channels 1211, at least two first bends 1212, and at least two second bends 1213. The first straight channels 1211 are parallel to each other and spaced apart. Each first bend 1212 is connected to one end of two adjacent first straight channels 1211, and each second bend 1213 is connected to the other end of two adjacent first straight channels 1211. The first bends 1212 and the second bends 1213 are at least partially offset. In this embodiment, the first array microchannel 121 is in a meandering shape, and its channel density is proportional to the heat generation of the heat-generating device of the display assembly 20; that is, the greater the heat generation of the heat-generating device, the greater the channel density of the first array microchannel 121.

[0101] The second array microchannel 122 includes at least two second straight channels 1221, at least two third bends 1222, and at least two fourth bends 1223. The second straight channels 1221 are parallel to each other and spaced apart. Each third bend 1222 is connected to one end of two adjacent second straight channels 1221, and each fourth bend 1223 is connected to the other end of two adjacent second straight channels 1221. The third bends 1222 and the fourth bends 1223 are at least partially offset. In this embodiment, the second array microchannel 122 is in a meandering shape, and its channel density is proportional to the heat generated by the heat-generating device of the display assembly 20; that is, the greater the heat generated by the heat-generating device, the greater the channel density of the second array microchannel 122.

[0102] Each first straight track 1211 and each second straight track 1221 are parallel to each other;

[0103] Each first straight track 1211 is perpendicular to each second straight track 1221.

[0104] In this application, the length direction of each first straight channel 1211 is parallel to the length direction of the support plate 10, and the multiple first straight channels 1211 are arranged at intervals along the width direction of the support plate 10.

[0105] Optionally, the width of the first straight section 1211 is smaller than the width of the first bend 1212. This design allows the fluid to pass smoothly through the first bend 1212.

[0106] Optionally, the width of the first straight section 1211 is smaller than the width of the second bend 1213. This design allows the fluid to pass smoothly through the second bend 1213.

[0107] Optionally, the depth of the first straight section 1211 is equal to the depth of the first curve 1212, and the depth of the first straight section 1211 is equal to the depth of the second curve 1213. This design can ensure the structural strength of the support plate 10.

[0108] Optionally, the width of the second straight section 1221 is smaller than the width of the third bend 1222. This design allows the fluid to pass smoothly through the third bend 1222.

[0109] Optionally, the width of the second straight section 1221 is smaller than the width of the fourth bend 1223. This design allows the fluid to pass smoothly through the fourth bend 1223.

[0110] Optionally, the depth of the second straight section 1221 is equal to the depth of the third curve 1222, and the depth of the second straight section 1221 is equal to the depth of the fourth curve 1223. This design can ensure the structural strength of the support plate 10.

[0111] Optionally, the bending portion 10c includes two non-perforated areas 102c, which are arranged opposite each other along the width direction of the support plate 10. A perforated area 101c is located between the two non-perforated areas 102c. The heat dissipation channel 12 includes two intermediate channels 123, which are respectively disposed within the two non-perforated areas 102c. In this embodiment, one end of each intermediate channel 123 is connected to the first straight channel 1211, and the other end of each intermediate channel 123 is connected to the second straight channel 1221. Each intermediate channel 123 is parallel or perpendicular to the first straight channel 1211 and the second straight channel 1221.

[0112] Optionally, Figure 7 This is a schematic diagram of the channel density of the support plate corresponding to the first and second regions according to an embodiment of this application, as shown below. Figure 7As shown, the channel density of the heat dissipation channel 12 corresponding to the first region 21 is greater than the channel density of the corresponding second region 22. In this embodiment, the greater the heat generation of the first region 21, the smaller the distance between the two adjacent first straight channels 1211 corresponding to that region, that is, the greater the density of the first straight channels 1211 corresponding to that region; or the smaller the distance between the two adjacent second straight channels 1221 corresponding to that region, that is, the greater the density of the second straight channels 1221 corresponding to that region.

[0113] Optionally, the support plate 10 includes a first surface 112, a second surface 113 disposed opposite to each other, and a side surface 114 connecting the first surface 112 and the second surface 113, the side surface 114 being covered with sealant 14. In this embodiment, the sealant 14 is, for example, a light-curing adhesive or a high-temperature curing adhesive; the sealant 14 is used to prevent moisture from penetrating into the support plate 10.

[0114] Optionally, the display assembly 20 includes a back support layer, a flexible display screen, and a protective film layer stacked together, with the back support layer connected to the support plate 10 via an adhesive layer. In this embodiment, the flexible display screen is an OLED screen.

[0115] Optionally, the display device further includes a housing (not shown), in which the display assembly 20 and the support plate 10 are installed. The housing includes a first bearing shell, a second bearing shell, at least one rotating shaft assembly, a first baffle and a second baffle. The rotating shaft assembly is connected between the first bearing shell and the second bearing shell. The first support portion 10a is fixed on the first bearing shell, the second support portion 10b is fixed on the second bearing shell, and the bending portion 10c is correspondingly provided with the rotating shaft assembly.

[0116] Optionally, the rotating shaft assembly includes a rotating shaft, a first swing arm, and a second swing arm. The first swing arm and the second swing arm are rotatably connected to both sides of the rotating shaft, respectively. The first bearing shell is rotatably connected to the first swing arm, and the second bearing shell is rotatably connected to the second swing arm. Both the first swing arm and the second swing arm are connected to the bent portion 10c of the support plate 10.

[0117] Second Embodiment

[0118] Figure 8 This is a cross-sectional view of the support plate along its width direction according to the second embodiment of this application, as shown below. Figure 8 As shown, the structure of the support plate 10 in this embodiment is roughly the same as that of the support plate 10 in the first embodiment, except that the support plate 10 in this embodiment is provided with at least two heat dissipation channels 12. In this embodiment, a patterned groove is formed on the lower surface of the second support film 13b near the second support film 13b, and the third support film 13c covers the patterned groove to form another heat dissipation channel 12, and coolant is disposed in the heat dissipation channel 12.

[0119] Optionally, Figure 9This is a schematic diagram of the channel density of the support plate corresponding to the first and second regions according to another embodiment of this application, as shown below. Figure 9 As shown, the support plate 10 has two heat dissipation channels 12 corresponding to the first region 21 and one heat dissipation channel 12 corresponding to the second region 22. Therefore, the channel density of the support plate 10 corresponding to the first region 21 is greater than the channel density of the second region 22. This design can increase the heat transfer speed and avoid heat concentration.

[0120] Third Embodiment

[0121] Figure 10 This is a cross-sectional view of the support plate along its width direction according to the third embodiment of this application, as shown below. Figure 10 As shown, the structure of the support plate 10 in this embodiment is largely the same as that in the second embodiment, except that the support plate 10 in this embodiment also has at least one through hole 15. In this embodiment, the heat dissipation channel 12 on the upper surface of the second support film 13b is defined as the first heat dissipation channel 12a, and the heat dissipation channel 12 on the lower surface of the second support film 13b is defined as the second heat dissipation channel 12b; the second support film 13b has at least one through hole 15 penetrating the upper and lower surfaces, and the through hole 15 connects the first heat dissipation channel 12a and the second heat dissipation channel 12b. The coolant in the first heat dissipation channel 12a and the second heat dissipation channel 12b can flow to each other, which can significantly increase the heat transfer rate.

[0122] This application also relates to a smart terminal, including the aforementioned display device.

[0123] Please refer to the above for the structure and functions of smart terminals; they will not be repeated here.

[0124] 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.

[0125] 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.

[0126] The steps in the method of this application embodiment can be adjusted, combined, or deleted according to actual needs.

[0127] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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)).

[0133] 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 system includes a support plate and a display assembly disposed on the support plate. The support plate has at least one heat dissipation channel containing coolant. The display assembly includes at least one first region and a second region surrounding the first region. The heating temperature of the first region is higher than that of the second region. The coolant in the support plate corresponding to the first region vaporizes upon heating and flows to the heat dissipation channel corresponding to the second region for liquefaction, achieving internal circulation and heat transfer. The support plate includes at least three stacked support films, with the heat dissipation channel formed between adjacent support films. The three stacked support films are defined as a first support film, a second support film, and a third support film. The display assembly is disposed on the first support film... On a supporting membrane, a patterned groove is formed on the upper surface of the second supporting membrane near the first supporting membrane. The first supporting membrane covers the patterned groove to form a heat dissipation channel. The heat dissipation channel includes a first array of microchannels, which includes at least two first straight channels, at least two first bends, and at least two second bends. Each first straight channel is parallel to each other and spaced apart. Each first bend is connected to one end of two adjacent first straight channels, and each second bend is connected to the other end of two adjacent first straight channels. Each first bend and each second bend are at least partially offset. The channel density of the heat dissipation channel corresponding to the first region is greater than the channel density corresponding to the second region, and the distance between two adjacent first straight channels corresponding to the first region is less than the distance between two adjacent first straight channels corresponding to the second region.

2. The display device as claimed in claim 1, characterized in that, The second support film has a patterned groove formed on its lower surface near the third support film, and the third support film covers the patterned groove to form another heat dissipation channel.

3. The display device as claimed in claim 2, characterized in that, The heat dissipation channel on the upper surface of the second support film is defined as the first heat dissipation channel, and the heat dissipation channel on the lower surface of the second support film is defined as the second heat dissipation channel; the second support film is provided with at least one through hole penetrating the upper surface and the lower surface, and the through hole connects the first heat dissipation channel and the second heat dissipation channel.

4. The display device as claimed in claim 1, characterized in that, Includes at least one of the following: The thickness of the second support film is greater than the thickness of the first support film; The thickness of the second support film is greater than the thickness of the third support film; The thickness of the first support film is equal to the thickness of the third support film; The first support membrane includes a first adhesive layer and a plurality of first carbon fiber bundles disposed within the first adhesive layer; The second support membrane includes a second adhesive layer and a plurality of second carbon fiber bundles disposed within the second adhesive layer; The third support membrane includes a third adhesive layer and multiple third carbon fiber bundles disposed within the third adhesive layer; The first carbon fiber bundle and the third carbon fiber bundle extend along a first direction, and the second carbon fiber bundle extends along a second direction, with the first direction and the second direction forming an angle. The included angle is a right angle.

5. The display device according to any one of claims 1 to 4, characterized in that, The support plate includes a first support portion, a second support portion, and a bent portion connecting the first support portion and the second support portion. The bent portion includes a perforated area and a non-perforated area. The heat dissipation channel includes a second array microchannel and an intermediate channel connecting the first array microchannel and the second array microchannel. The first array microchannel is disposed in the first support portion, the second array microchannel is disposed in the second support portion, and the intermediate channel is disposed in the non-perforated area.

6. The display device as claimed in claim 5, characterized in that, Includes at least one of the following: The second array microchannel includes at least two second straight channels, at least two third bends and at least two fourth bends. Each second straight channel is parallel to each other and spaced apart. Each third bend is connected to one end of two adjacent second straight channels, and each fourth bend is connected to the other end of two adjacent second straight channels. Each third bend and each fourth bend are at least partially offset. Each of the first straight sections and each of the second straight sections are parallel to each other; Each of the first straight sections is perpendicular to each of the second straight sections.

7. The display device as claimed in claim 6, characterized in that, Includes at least one of the following: The width of the first straight section is less than the width of the first curve; The width of the first straight section is less than the width of the second curve; The depth of the first straight section is equal to the depth of the first curve, and the depth of the first straight section is equal to the depth of the second curve; The width of the second straight section is less than the width of the third curve; The width of the second straight section is less than the width of the fourth curve; The depth of the second straight section is equal to the depth of the third curve, and the depth of the second straight section is equal to the depth of the fourth curve.

8. The display device according to any one of claims 1 to 4, characterized in that, The support plate includes a first surface, a second surface, and a side surface connected between the first surface and the second surface, the side surface being covered with sealant.

9. A smart terminal, characterized in that, Includes the display device according to any one of claims 1 to 8.

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