Display device and intelligent terminal

Abstract

The invention provides a display device and an intelligent terminal.The display device comprises a supporting plate and a display screen assembly of cooling liquid arranged on the supporting plate, at least one heat dissipation channel is formed in the supporting 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, and the heating temperature of the first area is higher than that of the second area. And the cooling liquid, corresponding to the first area, in the supporting plate is heated and vaporized and flows to the heat dissipation channel corresponding to the second area to be liquefied, so that internal circulation heat transfer is achieved. According to the display device, large-area heat exchange between the two shells can be achieved, and the heat dissipation problem of the folding displayer can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of display equipment, and in particular to a display device and a smart terminal. Background Art

[0002] Currently, the shipment volume of foldable smart devices is growing continuously, but due to the pursuit of extremely thin and light design, the internal components are arranged closely, and there is not enough space reserved to accommodate a complete liquid cooling system. In addition, the screen has improved the visual effect in order to achieve high brightness display and high refresh rate, but it also brings more significant temperature rise challenges. Therefore, integrating graphite sheet heat dissipation in foldable smart devices has become a necessary choice.

[0003] When developing this innovative solution, the designers noticed several key issues: the current graphite sheet bonding solution is limited by the shape of folding devices, the area of ​​the graphite sheet is greatly reduced compared to straight-plate mobile phones, and the splicing design is used in the hinge area, resulting in limited heat dissipation effect, causing frequent local overheating problems of the device, which has become a hot spot and difficulty in user feedback. In addition, adding graphite sheets to the bending part of the device will increase the stress during bending, causing the screen to bulge upward and deform, and in severe cases, even causing damage to the screen package and forming black spot defects. At the same time, the graphite sheet bonding process in the hinge area is complex and requires extremely high positioning accuracy, which increases the difficulty of production.

[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 the present application is to provide a display device that can achieve large-area heat exchange between two shells and solve the heat dissipation problem of a foldable display.

[0006] In order to solve the above technical problems, the present application provides a display device, including a support plate and a display screen assembly with a coolant arranged on the support plate, wherein at least one heat dissipation channel is provided in the support plate, and a coolant is provided in the heat dissipation channel, and the display screen assembly includes at least one first area and a second area arranged around the first area, the heating temperature of the first area is greater than the heating temperature of the second area, and the coolant corresponding to the first area in the support plate is vaporized by heat and flows to the heat dissipation channel corresponding to the second area to be liquefied to realize internal circulation 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 films stacked on each other, and the heat dissipation channel is formed between two adjacent support films;

[0009] The three layers of support films stacked in sequence 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 in sequence, the display screen assembly is arranged on the first support film, the second support film is formed with a patterned groove on the upper surface close to the first support film, and 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 supporting film close to the second supporting film, and the third supporting film covers the patterned groove to form another heat dissipation channel.

[0011] Optionally, the heat dissipation channel defined as the upper surface of the second supporting film is a first heat dissipation channel, and the heat dissipation channel defined as the lower surface of the second supporting film is a second heat dissipation channel; the second supporting film is provided with at least one through hole passing through 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 supporting film is greater than the thickness of the first supporting film;

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

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

[0016] The first supporting film includes a first adhesive layer and a plurality of first carbon fiber bundles arranged in the first adhesive layer;

[0017] The second supporting film includes a second adhesive layer and a plurality of second carbon fiber bundles arranged in the second adhesive layer;

[0018] The third supporting film comprises a third adhesive layer and a plurality of third carbon fiber bundles arranged in the third adhesive layer;

[0019] The first carbon fiber bundle and the third carbon fiber bundle are extended along a first direction, the second carbon fiber bundle is extended along a second direction, and an angle is formed between the first direction and the second direction;

[0020] The angle is a right angle.

[0021] Optionally, the support plate includes a first supporting portion, a second supporting portion, and a bending portion connected between the first supporting portion and the second supporting portion, the bending portion includes a hole area and a non-hole 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 arranged in the first supporting portion, the second array microchannel is arranged in the second supporting portion, and the intermediate channel is arranged in the non-hole area.

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

[0023] The first array microchannel comprises at least two first straight channels, at least two first curved channels and at least two second curved channels, the first straight channels are parallel to each other and arranged at intervals, the first curved channels are connected to one end of two adjacent first straight channels, the second curved channels are connected to the other ends of two adjacent first straight channels, and the first curved channels are at least partially staggered with the second curved channels;

[0024] The second array microchannel comprises at least two second straight channels, at least two third curved channels and at least two fourth curved channels, the second straight channels are parallel to each other and arranged at intervals, the third curved channels are connected to one end of two adjacent second straight channels, the fourth curved channels are connected to the other end of two adjacent second straight channels, and the third curved channels are at least partially staggered with the fourth curved channels;

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

[0026] Each of the first straight paths and each of the second straight paths are perpendicular to each other.

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

[0028] The width of the first straight road is smaller than the width of the first curve;

[0029] The width of the first straight track is smaller than the width of the second curve;

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

[0031] The width of the second straight track is smaller than the width of the third curve;

[0032] The width of the second straight track is smaller than the width of the fourth curve;

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

[0034] Optionally, the channel density of the heat dissipation channel corresponding to the first area is greater than the channel density corresponding to the second area; 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, and the side surface is covered with a sealant.

[0036] The present application also relates to an intelligent terminal, comprising the above-mentioned display device.

[0037] The display device of the present application integrates the display function and the cross-axis heat dissipation function in a folding display, which can realize large-area heat exchange between the two shells, solve the heat dissipation problem of the folding display, perfectly solve the bottleneck point of the thickness of the whole machine caused by the heat dissipation problem, and realize the lightness and thinness of the whole machine. The display device of the present application supports a small water drop design, and the heat dissipation space can be transferred to the hinge, further improving key performances such as falling and folding. Compared with traditional heat dissipation solutions, the present application has the advantages of low cost and high mass production feasibility. Moreover, the display device of the present application does not add heat dissipation film materials, which can ensure the lightness and thinness requirements of the whole machine; and the bending area of ​​the display device does not need to be attached with a bridge heat sink, which reduces the bending stress and is beneficial to improve the reliability of the whole machine. In addition, the heat dissipation channel covers the entire support plate, that is, the entire back of the display assembly is cooled, so the heat dissipation area is large and the heat dissipation effect is good.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specifically cites the preferred embodiments and describes them in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0040] Figure 1 A schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

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

[0042] Figure 3is a schematic diagram of the structure of the display device of the present application;

[0043] Figure 4 is a schematic diagram of the top view of the internal structure of the support plate of the first embodiment of the present application;

[0044] Figure 5 is a schematic cross-sectional structural diagram of the support plate of the first embodiment of the present application along its width direction;

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

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

[0047] Figure 8 is a schematic cross-sectional structural diagram of a support plate of a second embodiment of the present application along its width direction;

[0048] Fig. 9 is a schematic diagram of channel density corresponding to the first area and the second area of ​​a support plate according to another embodiment of the present application;

[0049] Fig.10 It is a schematic diagram of the cross-sectional structure of the support plate of the third embodiment of the present application along its width direction.

[0050] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0052] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. Optionally, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context in the specific embodiment.

[0053] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" etc. used in this application can be interpreted as inclusive, or mean any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0054] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0055] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0056] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application and have no specific meaning. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0058] The smart terminal may be implemented in various forms. For example, the smart terminal described in this application may include smart terminals such as mobile phones, tablet computers, laptop computers, 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 subsequent description will be illustrated by taking a smart terminal as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type terminals.

[0060] Figure 1 For a hardware structure diagram of a mobile terminal implementing each embodiment of the present application, please refer to Figure 1, which is a schematic diagram of the hardware structure of a smart terminal for implementing various embodiments of the present application, the smart terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, A / V (audio / video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111 and other components. Those skilled in the art can understand that Figure 1 The structure of the smart terminal shown in the figure does not constitute a limitation on the smart terminal. The smart terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0061] Combine the following Figure 1 A detailed introduction to each component of the smart terminal:

[0062] The radio frequency unit 101 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving the downlink information of the base station, it is sent to the processor 110 for processing; in addition, the uplink data is sent to the base station. Generally, 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, a duplexer, etc. In addition, the radio frequency unit 101 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communications can 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. The smart terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 102. It provides users with wireless broadband Internet access. Figure 1 The WiFi module 102 is shown, but it is understandable that it is not a necessary component of the smart terminal and can be omitted as needed without changing the essence of the invention.

[0064] The audio output unit 103 can convert the audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the smart terminal 100 is in a call signal receiving mode, a call mode, a recording mode, a voice recognition mode, a broadcast receiving mode, etc. Moreover, the audio output unit 103 can also provide audio output related to a specific function performed by the smart terminal 100 (for example, a call signal receiving sound, a 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 processor (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 106. The image frame processed by the graphics processor 1041 can be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, and other operating modes, and can process such sound into audio data. The processed audio (voice) data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 can implement various types of noise elimination (or suppression) algorithms to eliminate (or suppress) noise or interference generated in the process of receiving and sending 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 brightness of the ambient light, and the proximity sensor can turn off the panel 1061 and / or the 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 all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can also be configured on the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated 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] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the intelligent terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 1071 or near the touch panel 1071 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. The 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 orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1071, the user input unit 107 may further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not 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 it to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the panel 1061 according to the type of touch event. Figure 1 In the figure, the touch panel 1071 and the display panel 1061 are used as 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, which is not limited here.

[0070] The interface unit 108 is used as an interface through which at least one external device can be connected to the 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, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the smart terminal 100 or may be used to transmit data between the smart terminal 100 and an external device.

[0071] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a program storage area and a data storage area. Optionally, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0072] The processor 110 is the control center of the smart terminal. It uses various interfaces and lines to connect various parts of the entire smart terminal. It executes various functions of the smart terminal and processes data by running or executing software programs and / or modules stored in the memory 109, and calling data stored in the memory 109, so as to monitor the smart terminal as a whole. 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 processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 110.

[0073] The intelligent terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0074] although Figure 1 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 the present application, the communication network system on which the smart terminal of the present application is based is described below.

[0076] See also Figure 2 , Figure 2 A communication network system architecture diagram is provided for an embodiment of the present application, wherein the communication network system is an LTE system of universal mobile communication technology, and 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 an operator's IP service 204, which are connected in sequence for communication.

[0077] Optionally, UE201 may be the above-mentioned terminal 100, which will not be described in detail here.

[0078] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 , etc. Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface), and eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide UE 201 with access to EPC 203 .

[0079] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, PGW (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, and provides bearer and connection management. HSS 2032 is used to provide some registers to manage functions such as home location register (not shown in the figure), and store some user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, which selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

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

[0081] Although the above introduction takes the LTE system as an example, those skilled in the art should know that the present 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 here.

[0082] Based on the above-mentioned smart terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0083] First embodiment

[0084] Figure 3 is a schematic diagram of the structure of the display device of the present application, Figure 4 is a schematic diagram of the top view of the internal structure of the support plate of the first embodiment of the present application, Figure 5 FIG. 1 is a schematic cross-sectional view of the support plate of the first embodiment of the present application along its width direction. Figure 3 , Figure 4 and Figure 5As shown, the display device includes a support plate 10 and a display screen assembly 20 with a coolant arranged on the support plate 10. At least one heat dissipation channel 12 is arranged in the support plate 10, and a coolant is arranged in the heat dissipation channel 12. The display screen assembly 20 includes at least one first area 21 and a second area 22 arranged around the first area 21. The heating temperature of the first area 21 is greater than the heating temperature of the second area 22. The coolant corresponding to the first area 21 in the support plate 10 is vaporized by heat and flows to the heat dissipation channel 12 corresponding to the second area 22 to be liquefied to realize internal circulation heat transfer.

[0085] When the temperature of the first area 21 continues to rise, the coolant located around the first area 21 continuously absorbs heat and begins to heat up. A part of the coolant continuously conducts heat with the low-temperature coolant in the nearby second area 22 through the capillary heat dissipation channel 12 inside the support plate 10 to achieve heat exchange and cooling. The other part of the coolant facing the first area 21 is heated and continuously evaporates to form a gas, and continuously gathers and moves toward the second area 22. As the temperature of the second area 22 decreases, the steam begins to liquefy and condense, and begins to flow back to the area opposite to the first area 21, thereby achieving continuous heat transfer.

[0086] The display device of the present application integrates the display function and the cross-axis heat dissipation function in a folding display, which can realize large-area heat exchange between the two shells, solve the heat dissipation problem of the folding display, perfectly solve the bottleneck point of the thickness of the whole machine caused by the heat dissipation problem, and realize the lightness and thinness of the whole machine. The display device of the present application supports a small water drop design, and the heat dissipation space can be transferred to the hinge, further improving key performances such as falling and folding. Compared with traditional heat dissipation solutions, the present application has the advantages of low cost and high feasibility of mass production. Moreover, the display device of the present application does not add heat dissipation film materials, which can ensure the lightness and thinness requirements of the whole machine; and the bending area of ​​the display device does not need to be attached with a bridge heat sink, which reduces the bending stress and is conducive to improving the reliability of the whole machine. In addition, the heat dissipation channel 12 covers the entire support plate 10, that is, the entire back of the display screen assembly 20 is cooled, so the heat dissipation area is large and the heat dissipation effect is good.

[0087] Alternatively, if Figure 5 As shown, the support plate 10 includes at least three layers of support films 13 stacked one on another, and the heat dissipation channel 12 is formed between two adjacent layers of support films 13. In order to prevent the coolant from leaking, the two adjacent layers of support films 13 forming the heat dissipation channel 12 need to be laminated and molded.

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

[0089] Optionally, the three layers of support films 13 stacked in sequence 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 in sequence, the display screen assembly 20 is arranged on the first support film 13a, the second support film 13b is formed with a patterned groove on the upper surface close to the first support film 13a, and 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 engraved by using a CCD laser process.

[0090] Alternatively, if 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 supporting film 13b is greater than the thickness of the third supporting film 13c;

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

[0093] Optionally, Figure 6 This is a schematic diagram showing the structure of the carbon fiber bundle of the support plate of the present application. 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 in the first adhesive layer 1311a. The first adhesive layer 1311a is, for example, resin;

[0094] The second supporting film 13b includes a second adhesive layer 1311b and a plurality of second carbon fiber bundles 1312b disposed in the second adhesive layer 1311b. The second adhesive layer 1311b is, for example, resin.

[0095] The third supporting film 13c includes a third adhesive layer 1311c and a plurality of third carbon fiber bundles 1312c disposed in 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 extended along the first direction X, and the second carbon fiber bundle 1312b is extended 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 bending portion 10c connected between the first support portion 10a and the second support portion 10b, the bending portion 10c includes a hole area 101c and a non-hole 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 arranged in the first support portion 10a, the second array microchannel 122 is arranged in the second support portion 10b, and the intermediate channel 123 is arranged in the non-hole area 102c.

[0099] Alternatively, if Figure 5 As shown, the hole-digging area 101 c is provided with patterned through-holes and patterned wire grooves, the through-holes penetrate the support plate 10 , and the wire 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 curved channels 1212, and at least two second curved channels 1213, each first straight channel 1211 is parallel to each other and arranged at intervals, each first curved channel 1212 is connected to one end of two adjacent first straight channels 1211, each second curved channel 1213 is connected to the other end of two adjacent first straight channels 1211, and each first curved channel 1212 is at least partially staggered with each second curved channel 1213. In this embodiment, the first array microchannel 121 is in a tortuous shape, and its channel density is proportional to the heat generated by the heating device of the display screen assembly 20, that is, the greater the heat generated by the heating device, the greater the channel density of the first array microchannel 121.

[0101] The second array microchannel 122 includes at least two second straights 1221, at least two third bends 1222, and at least two fourth bends 1223. The second straights 1221 are parallel to each other and arranged at intervals. Each third bend 1222 is connected to one end of two adjacent second straights 1221, and each fourth bend 1223 is connected to the other end of two adjacent second straights 1221. The third bends 1222 and the fourth bends 1223 are at least partially staggered. In this embodiment, the second array microchannel 122 is in a tortuous shape, and its channel density is proportional to the heat generated by the heating device of the display screen assembly 20, that is, the greater the heat generated by the heating device, the greater the channel density of the second array microchannel 122.

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

[0103] Each first straight track 1211 and each second straight track 1221 are perpendicular to each other.

[0104] The length direction of each first straight channel 1211 of the present application is parallel to the length direction of the support plate 10 , and the plurality of first straight channels 1211 are arranged at intervals from each other along the width direction of the support plate 10 .

[0105] Optionally, the width of the first straight channel 1211 is smaller than the width of the first curved channel 1212 . This design facilitates the fluid to pass through the first curved channel 1212 smoothly.

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

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

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

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

[0110] Optionally, the depth of the second straight track 1221 is equal to the depth of the third curve 1222 , and the depth of the second straight track 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-hole-digging areas 102c, the two non-hole-digging areas 102c are arranged opposite to each other along the width direction of the support plate 10, the hole-digging area 101c is located between the two non-hole-digging areas 102c, and the heat dissipation channel 12 includes two intermediate channels 123, and the two intermediate channels 123 are respectively arranged in the two non-hole-digging 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 to or perpendicular to the first straight channel 1211 and the second straight channel 1221.

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

[0113] Optionally, the support plate 10 includes a first surface 112, a second surface 113, and a side surface 114 connected between the first surface 112 and the second surface 113, and the side surface 114 is covered with a sealant 14. In this embodiment, the sealant 14 is, for example, a light-curing sealant or a high-temperature curing sealant; the sealant 14 is used to prevent water vapor from invading the support plate 10.

[0114] Optionally, the display screen assembly 20 includes a back support layer, a flexible display screen and a protective film layer which are stacked, and the back support layer is 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 also includes a shell (not shown), the display screen assembly 20 and the support plate 10 are installed in the shell, the shell includes a first bearing shell, a second bearing shell, at least one hinge assembly, a first baffle and a second baffle, the hinge 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 arranged corresponding to the hinge assembly.

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

[0117] Second embodiment

[0118] Figure 8 FIG. 2 is a schematic cross-sectional view of the support plate of the second embodiment of the present application along its width direction. Figure 8 As shown, the structure of the support plate 10 of this embodiment is substantially the same as that of the support plate 10 of the first embodiment, except that at least two heat dissipation channels 12 are provided in the support plate 10 of this embodiment. In this embodiment, a patterned groove is formed on the lower surface of the second support film 13b close to the second support film 13b, and the third support film 13c covers the patterned groove to form another heat dissipation channel 12, and a coolant is provided in the heat dissipation channel 12.

[0119] Optionally, Fig. 9Schematic diagram of the channel density of the support plate corresponding to the first area and the second area of ​​another embodiment of the present application. Fig. 9 As shown, the support plate 10 is provided with two layers of heat dissipation channels 12 corresponding to the first area 21, and the support plate 10 is provided with one layer of heat dissipation channels 12 corresponding to the second area 22. Therefore, the channel density of the support plate 10 corresponding to the first area 21 is greater than the channel density of the second area 22. This design can increase the heat transfer speed and avoid heat concentration.

[0120] Third embodiment

[0121] Fig.10 FIG. 4 is a schematic cross-sectional view of the support plate of the third embodiment of the present application along its width direction. Fig.10 As shown, the structure of the support plate 10 of this embodiment is substantially the same as that of the support plate 10 of the second embodiment, except that at least one through hole 15 is further provided in the support plate 10 of this embodiment. In this embodiment, the heat dissipation channel 12 defined on the upper surface of the second support film 13b is the first heat dissipation channel 12a, and the heat dissipation channel 12 defined on the lower surface of the second support film 13b is the second heat dissipation channel 12b; at least one through hole 15 penetrating the upper surface and the lower surface is provided on the second support film 13b, and the through hole 15 connects the first heat dissipation channel 12a and the second heat dissipation channel 12b, and the coolant in the first heat dissipation channel 12a and the second heat dissipation channel 12b can flow mutually, which can significantly increase the heat transfer speed.

[0122] The present application also relates to an intelligent terminal, comprising the above-mentioned display device.

[0123] Please refer to the above for the structure and functions of the smart terminal, which will not be repeated here.

[0124] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0125] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

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

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

[0128] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0129] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0130] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various 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 description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.

[0132] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that contains one or more available media integrated. The available medium can be a magnetic medium, (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)), etc.

[0133] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display device, characterized in that: A display screen assembly includes a support plate and a cooling liquid arranged on the support plate, wherein at least one heat dissipation channel is arranged in the support plate, and cooling liquid is arranged in the heat dissipation channel, and the display screen assembly includes at least one first area and a second area arranged around the first area, the heating temperature of the first area is greater than the heating temperature of the second area, and the cooling liquid corresponding to the first area in the support plate is vaporized by heat and flows to the heat dissipation channel corresponding to the second area to be liquefied to realize internal circulation heat transfer.

2. The display device according to claim 1, wherein: Include at least one of the following: The support plate includes at least three layers of support films stacked on each other, and the heat dissipation channel is formed between two adjacent support films; The three layers of support films stacked in sequence 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 in sequence, the display screen assembly is arranged on the first support film, the second support film is formed with a patterned groove on the upper surface close to the first support film, and the first support film covers the patterned groove to form a heat dissipation channel.

3. The display device according to claim 2, wherein: A patterned groove is formed on the lower surface of the second supporting film close to the second supporting film, and the third supporting film covers the patterned groove to form another heat dissipation channel.

4. The display device according to claim 3, characterized in that The heat dissipation channel defined as the upper surface of the second supporting film is a first heat dissipation channel, and the heat dissipation channel defined as the lower surface of the second supporting film is a second heat dissipation channel; the second supporting 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.

5. The display device according to claim 2, wherein: Include at least one of the following: The thickness of the second supporting film is greater than the thickness of the first supporting film; The thickness of the second supporting film is greater than the thickness of the third supporting film; The thickness of the first supporting film is equal to the thickness of the third supporting film; The first supporting film includes a first adhesive layer and a plurality of first carbon fiber bundles arranged in the first adhesive layer; The second supporting film includes a second adhesive layer and a plurality of second carbon fiber bundles arranged in the second adhesive layer; The third supporting film comprises a third adhesive layer and a plurality of third carbon fiber bundles arranged in the third adhesive layer; The first carbon fiber bundle and the third carbon fiber bundle are extended along a first direction, the second carbon fiber bundle is extended along a second direction, and an angle is formed between the first direction and the second direction; The angle is a right angle.

6. The display device according to any one of claims 1 to 5, characterized in that: The support plate includes a first support portion, a second support portion, and a bending portion connected between the first support portion and the second support portion, the bending portion includes a hole-digging area and a non-hole-digging 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 arranged in the first support portion, the second array microchannel is arranged in the second support portion, and the intermediate channel is arranged in the non-hole-digging area.

7. The display device according to claim 6, wherein: Include at least one of the following: The first array microchannel comprises at least two first straight channels, at least two first curved channels and at least two second curved channels, the first straight channels are parallel to each other and arranged at intervals, the first curved channels are connected to one end of two adjacent first straight channels, the second curved channels are connected to the other ends of two adjacent first straight channels, and the first curved channels are at least partially staggered with the second curved channels; The second array microchannel comprises at least two second straight channels, at least two third curved channels and at least two fourth curved channels, the second straight channels are parallel to each other and arranged at intervals, the third curved channels are connected to one end of two adjacent second straight channels, the fourth curved channels are connected to the other end of two adjacent second straight channels, and the third curved channels are at least partially staggered with the fourth curved channels; Each of the first straight roads and each of the second straight roads are parallel to each other; Each of the first straight paths and each of the second straight paths are perpendicular to each other.

8. The display device according to claim 7, characterized in that: Include at least one of the following: The width of the first straight road is smaller than the width of the first curve; The width of the first straight track is smaller than the width of the second curve; The depth of the first straight is equal to the depth of the first curve, and the depth of the first straight is equal to the depth of the second curve; The width of the second straight track is smaller than the width of the third curve; The width of the second straight track is smaller than the width of the fourth curve; The depth of the second straight is equal to the depth of the third curve, and the depth of the second straight is equal to the depth of the fourth curve.

9. The display device according to any one of claims 1 to 5, characterized in that: The channel density of the heat dissipation channel corresponding to the first area is greater than the channel density corresponding to the second area; and / or, The support plate includes a first surface, a second surface and a side surface connected between the first surface and the second surface, and the side surface is covered with a sealant.

10. An intelligent terminal, characterized in that: A display device comprising any one of claims 1 to 9.

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