Display device and terminal equipment

Abstract

The application relates to the technical field of electronic equipment, and discloses a display device and a terminal device. The display device comprises a flexible display screen, a curling storage assembly and a supporting assembly. The supporting assembly comprises supporting units and differentials. The supporting units are used for supporting the flexible display screen, and a plurality of supporting units are arranged along the length direction of the flexible display screen. The plurality of supporting units support different curling radius regions of the flexible display screen. Two adjacent supporting units are connected through a differential. The differential is used for adjusting the speed difference between the two adjacent supporting units, so as to adjust the curling speed difference of the different curling radius regions of the flexible display screen. The speed of the two adjacent supporting units is different under the action of the differential, so that the different curling radius regions of the flexible display screen have a curling speed difference. The movement track of the flexible display screen is prevented from being changed during the curling process, the acting force of the supporting units is reduced, and the deformation resistance generated by the flexible screen in the curling region is reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic equipment technology, and more particularly to a display device and terminal equipment. Background Technology

[0002] In the field of display technology, flexible displays, with their rollable characteristics, are widely used in people's lives. However, in the process of rolling up and storing existing flexible displays, the screen body lacks sufficient substrate support. Under the influence of the external environment, the screen body will bend and shift, causing the displayed image to be distorted and deformed, thus reducing the display effect. Summary of the Invention

[0003] Based on the above problems, the purpose of this invention is to provide a display device and terminal equipment that enables different curling radius areas of a flexible display screen to have different curling speeds, avoids damage caused by changes in the movement trajectory of the flexible display screen during the curling process, reduces the force exerted on the support unit, improves the overall strength of the screen, reduces the deformation resistance generated by the flexible screen in the curling area, extends the service life of the flexible display screen, and ensures the display effect of the flexible display screen.

[0004] To achieve the above objectives, the following technical solution is provided:

[0005] In a first aspect, the present invention provides a display device, comprising:

[0006] Flexible display screen;

[0007] A rollable storage component for rolling up and storing the flexible display screen;

[0008] A support assembly includes a support unit and a differential. The support unit is used to support the flexible display screen. Multiple support units are arranged along the length direction of the flexible display screen. The multiple support units support different curling radius regions of the flexible display screen. Two adjacent support units are connected by a differential. The differential is used to adjust the speed difference between two adjacent support units to adjust the curling speed difference between different curling radius regions of the flexible display screen.

[0009] As an optional solution of the display device provided by the present invention, the support unit includes a first support rod, which is arranged along the length direction of the flexible display screen and supported at the bottom of the flexible display screen. The first support rods of two adjacent support units are connected by a differential, which is used to adjust the speed difference between two adjacent first support rods to adjust the curling speed difference of different curling radius regions of the flexible display screen.

[0010] As an optional solution to the display device provided by the present invention, the differential includes a first drive gear, a second drive gear, a first transmission gear, and a second transmission gear. The first drive gear is provided with a mounting bracket, and the second drive gear is rotatably mounted on the mounting bracket. Both the first transmission gear and the second transmission gear are connected to the second drive gear. One of two adjacent first support rods is connected to the first transmission gear, and the other of two adjacent first support rods is connected to the second transmission gear.

[0011] As an optional embodiment of the display device provided by the present invention, the first transmission gear is connected to the first support rod through a first lead screw and nut pair, and the second transmission gear is connected to another first support rod through a second lead screw and nut pair.

[0012] As an optional embodiment of the display device provided by the present invention, two mounting brackets are symmetrically arranged, and two second drive gears are symmetrically arranged, one of the second drive gears being rotatably mounted on one of the mounting brackets, and the other second drive gear being rotatably mounted on the other mounting bracket.

[0013] As an optional embodiment of the display device provided by the present invention, the differential further includes a drive motor and a third drive gear, wherein the drive motor is used to drive the third drive gear to rotate, and the third drive gear is connected to the first drive gear.

[0014] As an optional embodiment of the display device provided by the present invention, the support unit further includes a second support rod connected to the first support rod. The second support rod is arranged along the width direction of the flexible display screen and is supported on the bottom of the flexible display screen.

[0015] As an optional embodiment of the display device provided by the present invention, the support unit further includes a third support rod, which is supported on the bottom of the flexible display screen, and the first support rod, the second support rod and the third support rod are connected to form a triangular structure.

[0016] As an optional embodiment of the display device provided by the present invention, the support unit is made of carbon fiber.

[0017] As an optional embodiment of the display device provided by the present invention, the width of the support unit is the same as the width of the flexible display screen.

[0018] As an optional embodiment of the display device provided by the present invention, the support unit is made of a flexible material.

[0019] As an optional embodiment of the display device provided by the present invention, the support unit is provided with a limit sensor.

[0020] As an optional solution to the display device provided by the present invention, the rollable storage assembly includes a housing and a roller. The roller is rotatably disposed on the housing and is connected to the flexible display screen. Rotating the roller can cause the flexible display screen to be rolled onto the roller.

[0021] As an optional solution to the display device provided by the present invention, the rollable storage assembly further includes a guide shaft, which is rotatably mounted on the housing.

[0022] Secondly, the present invention also provides a terminal device, including the aforementioned display device.

[0023] The beneficial effects of this invention are as follows:

[0024] The display device provided by this invention can be applied to various terminal devices (such as mobile phones and tablets) with flexible display requirements. A flexible display screen is folded and stored using a roll-up storage component. The flexible display screen can extend beyond or be rolled into the roll-up storage component, making it convenient to carry and meeting users' flexible display needs for different display areas, thus improving the user experience. When the flexible display screen is in a flattened state, it is supported by support units. Since multiple support units are arranged along the length of the flexible display screen, each support unit supports different folding radius areas of the flexible display screen, preventing screen deformation and improving the display's visual appeal. When the flexible display screen needs to be folded, the speed difference between adjacent support units, due to the differential gear, creates a folding speed difference between different folding radius areas of the flexible display screen. This prevents damage caused by changes in the movement trajectory of the flexible display screen during folding, reduces the force pulling the support units, improves the overall strength of the screen, reduces the deformation resistance generated in the folding area, extends the service life of the flexible display screen, and ensures the display effect of the flexible display screen.

[0025] The terminal device provided by this invention includes the aforementioned display device. The terminal device can be a mobile phone, tablet computer, or other wearable device. A flexible display screen is rolled up and stored using a roll-up storage component. The flexible display screen can extend beyond the roll-up storage component or be rolled inside it, making it convenient to carry and meeting users' flexible display needs for different display areas, thus improving the user experience. When the flexible display screen is in a flattened state, it is supported by support units. Since multiple support units are arranged along the length of the flexible display screen, each support unit supports different roll-up radius areas of the flexible display screen, preventing screen deformation and improving performance. Regarding the screen's display quality, when the flexible display needs to be folded up, the speed difference between adjacent support units, facilitated by a differential gear, creates a difference in folding speed across different folding radius areas. This prevents damage caused by changes in the flexible display's trajectory during folding, reduces the force pulling on the support units, enhances the overall screen strength, lowers deformation resistance in the folding area, extends the lifespan of the flexible display, and ensures optimal display performance. The product is novel, highly recognizable, suitable for a wide range of users and scenarios, and features smooth and natural folding and unfolding movements. It is easy to operate, durable, and provides a superior user experience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the display device provided in a specific embodiment of the present invention from a certain perspective, wherein the flexible display screen is in a rolled-up state;

[0028] Figure 2 This is a structural schematic diagram of the display device provided in a specific embodiment of the present invention from another perspective, wherein the flexible display screen is in a rolled-up state;

[0029] Figure 3 This is a schematic diagram of the display device provided in a specific embodiment of the present invention from a certain perspective, wherein the flexible display screen is in a flattened state;

[0030] Figure 4 This is a structural schematic diagram of the display device provided in a specific embodiment of the present invention from another perspective, wherein the flexible display screen is in a flattened state;

[0031] Figure 5This is a schematic diagram of the display device provided in a specific embodiment of the present invention from a certain perspective, wherein the roll-up storage component is provided with a guide shaft;

[0032] Figure 6 This is a schematic diagram of the display device provided in a specific embodiment of the present invention from another perspective, wherein the support component is provided with a limit sensor;

[0033] Figure 7 This is a schematic diagram of the display device provided in a specific embodiment of the present invention from a certain perspective, wherein two rollable storage components are provided;

[0034] Figure 8 This is a schematic diagram of the differential provided in a specific embodiment of the present invention.

[0035] In the picture:

[0036] 1. Flexible display screen; 2. Rollable storage component; 3. Support component;

[0037] 21. Housing; 22. Reel; 23. Guide shaft;

[0038] 31. Support unit; 32. Differential;

[0039] 311. First support rod; 312. Second support rod; 313. Third support rod; 314. Limit sensor;

[0040] 321. First drive gear; 322. Second drive gear; 323. First transmission gear; 324. Second transmission gear; 325. Mounting bracket; 326. Third drive gear. Detailed Implementation

[0041] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0044] like Figures 1 to 8 As shown, this embodiment provides a display device that can be applied to various terminal devices (such as mobile phones and tablets) with flexible display requirements. The display device includes a flexible display screen 1, a roll-up and storage assembly 2, and a support assembly 3. The roll-up and storage assembly 2 is used to roll up and store the flexible display screen 1, and the support assembly 3 is used to support the flexible display screen 1. Specifically, the support assembly 3 includes a support unit 31 and a differential 32. Multiple support units 31 are arranged along the length of the flexible display screen 1, and these multiple support units 31 support different roll-up radius regions of the flexible display screen 1. Adjacent support units 31 are connected by a differential 32, which is used to adjust the speed difference between adjacent support units 31 to adjust the roll-up speed difference between different roll-up radius regions of the flexible display screen 1.

[0045] The flexible display screen 1 is folded and stored using the roll-up storage component 2. The flexible display screen 1 can extend beyond or be rolled into the roll-up storage component 2, making it convenient to carry and meeting the flexible display needs of users with different display areas, thus improving the user experience. When the flexible display screen 1 is in a flattened state, it is supported by support units 31. Since multiple support units 31 are arranged along the length of the flexible display screen 1, each support unit 31 supports different curling radius areas of the flexible display screen 1, preventing screen deformation and improving the display's visual appeal. When the flexible display screen 1 needs to be folded, the speed difference between adjacent support units 31, under the action of the differential 32, creates a curling speed difference between different curling radius areas of the flexible display screen 1. This prevents damage caused by changes in the movement trajectory of the flexible display screen 1 during curling, reduces the force pulling the support units 31, improves the overall strength of the screen, reduces the deformation resistance generated in the curling area, extends the service life of the flexible display screen 1, and ensures the display effect of the flexible display screen 1.

[0046] Optionally, the support unit 31 includes a first support rod 311, which is arranged along the length of the flexible display screen 1 and supported at the bottom of the flexible display screen 1. The first support rods 311 of two adjacent support units 31 are connected by a differential 32. The differential 32 is used to adjust the speed difference between the two adjacent first support rods 311 to adjust the rolling speed difference of different rolling radius areas of the flexible display screen 1. During the rolling process of the flexible display screen 1, the linear velocity of the area closer to the rolling and storage component 2 is smaller, and the linear velocity of the area farther away from the rolling and storage component 2 is larger. The speed difference between two adjacent first support rods 311 is adjusted by the differential 32, so that the speed of the first support rod 311 closer to the curling and storage assembly 2 is greater than the speed of the first support rod 311 farther away from the curling and storage assembly 2. This causes different curling radius areas of the flexible display screen 1 to have different curling speeds, preventing damage caused by changes in the movement trajectory of the flexible display screen 1 during the curling process. It also reduces the force pulling the support unit 31, improves the overall strength of the screen, reduces the deformation resistance generated by the flexible screen in the curling area, extends the service life of the flexible display screen 1, and ensures the display effect of the flexible display screen 1. When the flexible display screen 1 is in a flattened state, it is supported by the first support rods 311. Since multiple first support rods 311 are arranged along the length direction of the flexible display screen 1, and multiple first support rods 311 support different curling radius areas of the flexible display screen 1 respectively, screen deformation is avoided and the display experience is improved.

[0047] Optionally, the differential 32 includes a first drive gear 321, a second drive gear 322, a first transmission gear 323, and a second transmission gear 324. The first drive gear 321 is provided with a mounting bracket 325, and the second drive gear 322 is rotatably mounted on the mounting bracket 325. The first transmission gear 323 and the second transmission gear 324 are both connected to the second drive gear 322. One of two adjacent first support rods 311 is connected to the first transmission gear 323, and the other of two adjacent first support rods 311 is connected to the second transmission gear 324. The rotation axes of the first drive gear 321, the first transmission gear 323, and the second transmission gear 324 can coincide and be fixed. The rotation axis of the second drive gear 322 can be perpendicular to and movable with the rotation axis of the first drive gear 321. When the first drive gear 321 rotates, the mounting bracket 325 rotates accordingly, thereby driving the second drive gear 322 to revolve. Since both the first transmission gear 323 and the second transmission gear 324 mesh with the second drive gear 322, the second drive gear 322 will also rotate on its own axis during the revolution. Because the transmission ratio between the first transmission gear 323 and the second drive gear 322 is different from that between the second transmission gear 324 and the second drive gear 322, different transmission speeds of the first transmission gear 323 and the second transmission gear 324 are achieved, so that the two adjacent first support rods 311 have a speed difference, thereby driving the different curling radius areas of the flexible display screen 1 to have a curling speed difference, avoiding damage caused by changes in the movement trajectory of the flexible display screen 1 during the curling process.

[0048] To facilitate the transmission between the first transmission gear 323 and the first support rod 311, and between the second transmission gear 324 and another first support rod 311, optionally, the first transmission gear 323 is connected to the first support rod 311 via a first lead screw and nut pair, and the second transmission gear 324 is connected to the other first support rod 311 via a second lead screw and nut pair. The first transmission gear 323 drives the lead screw of the first lead screw and nut pair to move, and the nut of the first lead screw and nut pair is fixedly connected to the first support rod 311, thus transmitting the rotational motion of the first transmission gear 323 to form the traversal motion of the first support rod 311. The second transmission gear 324 drives the lead screw of the second lead screw and nut pair to move, and the nut of the second lead screw and nut pair is fixedly connected to the second support rod 312, thus transmitting the rotational motion of the second transmission gear 324 to form the traversal motion of the second support rod 312.

[0049] To avoid bending stress in the differential 32, optionally, two mounting brackets 325 and two second drive gears 322 are symmetrically arranged. One second drive gear 322 is rotatably mounted on one mounting bracket 325, and the other second drive gear 322 is rotatably mounted on the other mounting bracket 325. The tooth groove of one second drive gear 322 can be offset by 180 degrees relative to the tooth groove of the other second drive gear 322.

[0050] Optionally, the differential 32 also includes a drive motor and a third drive gear 326, the drive motor being used to drive the third drive gear 326 to rotate, the third drive gear 326 being connected to the first drive gear 321. Driven by the drive motor, the third drive gear 326 rotates. The meshing of the third drive gear 326 with the first drive gear 321 further drives the first drive gear 321. As the first drive gear 321 rotates, the mounting bracket 325 rotates accordingly, causing the second drive gear 322 to revolve. Since both the first transmission gear 323 and the second transmission gear 324 mesh with the second drive gear 322, the second drive gear 322 also rotates on its own axis during its revolution. Because the transmission ratio between the first transmission gear 323 and the second drive gear 322 is different from that between the second transmission gear 324 and the second drive gear 322, different transmission speeds are achieved between the first transmission gear 323 and the second transmission gear 324. This results in a speed difference between adjacent first support rods 311, thereby causing different curling radius areas of the flexible display screen 1 to have different curling speeds, preventing damage caused by changes in the movement trajectory of the flexible display screen 1 during curling. The drive motor can be a servo motor, which can control speed with very high positional accuracy and can convert voltage signals into torque and speed to drive the controlled object. Because servo motors operate at high speeds, they can be connected to the third drive gear 326 via a reduction gearbox. This ensures smooth operation, high transmission precision, high transmission efficiency, and accurate transmission ratios for the third drive gear 326. Alternatively, the servo motor can be connected to the third drive gear 326 via a rack and pinion transmission structure. This approach is simpler, occupies less space, provides precise and reliable transmission, and avoids the accumulation of transmission errors. The specific choice depends on the application scenario.

[0051] To avoid concentrated stress on the flexible display screen 1, the support unit 31 may optionally include a second support rod 312 connected to the first support rod 311. The second support rod 312 is arranged along the width direction of the flexible display screen 1 and supports the bottom of the flexible display screen 1. Under the joint support of the first support rod 311 and the second support rod 312, the stress on the flexible display screen 1 is relatively uniform. To improve the structural strength of the support unit 31, the support unit 31 may optionally include a third support rod 313, which supports the bottom of the flexible display screen 1. The first support rod 311, the second support rod 312, and the third support rod 313 are connected to form a triangular structure. The triangular structure is a relatively stable structural form, ensuring the support strength of the support unit 31.

[0052] Optionally, the support unit 31 is made of carbon fiber. Carbon fiber refers to high-strength, high-modulus fibers with a carbon content of over 90%. Carbon fiber is made from acrylic and viscose fibers through high-temperature oxidation and carbonization. Mainly composed of carbon elements, carbon fiber possesses properties such as high-temperature resistance, friction resistance, thermal conductivity, and corrosion resistance. It is fibrous, flexible, and can be processed into various fabrics. Due to its graphite microcrystalline structure preferentially oriented along the fiber axis, it exhibits high strength and modulus along the fiber axis. Carbon fiber has a low density, resulting in high specific strength and specific modulus. To prevent the support unit 31 from protruding from the flexible display screen 1 and to ensure the supporting area of ​​the support unit 31, the width of the support unit 31 is optionally the same as the width of the flexible display screen 1.

[0053] Optionally, the support unit 31 is made of a flexible material. The support unit 31 can be made of the following flexible materials: polyvinyl alcohol (PVA), polyester (PET), polyimide (PI), polyethylene naphthalate (PEN), paper, textile materials, etc. Polyimide materials have advantages such as high temperature resistance, low temperature resistance, chemical resistance, and good electrical properties, making them the most promising materials for flexible electronics. However, in addition to high temperature resistance, the light transmittance, surface roughness, and material cost of the flexible substrate must also be considered when selecting a flexible substrate. Polydimethylsiloxane (PDMS) is also a widely recognized flexible material, with advantages including easy availability, chemical stability, transparency, and good thermal stability. Its distinct adhesion and non-adhesion regions under ultraviolet light make it easy to adhere electronic materials to its surface. Although PET has a low conversion temperature (approximately 70℃-80℃), its low price and excellent light transmittance make it a cost-effective material for transparent conductive films.

[0054] To facilitate the detection of the position information of the support unit 31, the support unit 31 may optionally be equipped with a limit sensor 314. Multiple limit sensors 314 can be set to measure the position information of the flexible display screen 1 at different curling stages. Based on the position information transmitted by the limit sensors 314, the control system can accordingly activate the curling and storage assembly 2 to orderly curl and store the flexible display screen 1.

[0055] Optionally, the rollable storage component 2 includes a housing 21 and a scroll 22. The scroll 22 is rotatably mounted on the housing 21 and connected to the flexible display screen 1. Rotating the scroll 22 causes the flexible display screen 1 to be wound onto the scroll 22. The scroll 22 can have an independent drive element or can be linked with other moving parts in the terminal device; this is not limited here. The drive element can be a servo motor. A servo motor can control speed and has very accurate position. It can convert voltage signals into torque and speed to drive the controlled object. Since the servo motor has a relatively high speed, it can be connected to the scroll 22 through a reduction gearbox to ensure smooth operation, high transmission accuracy, high transmission efficiency, and accurate transmission ratio. Of course, the servo motor can also be connected to the scroll 22 through a rack and pinion transmission structure. This structure is simple, occupies little space, and provides accurate and reliable transmission, avoiding the accumulation of transmission errors. The specific choice depends on the application scenario. The scroll 22 can be a hollow cylindrical structure to reduce the weight of the terminal device and facilitate carrying.

[0056] The scroll 22 can be connected to the flexible display screen 1 via a flexible connector. Connecting the scroll 22 and the flexible display screen 1 via the flexible connector allows for convenient arrangement of the scroll 22's installation position, eliminating the need for a direct connection between the scroll 22 and the flexible display screen 1, thus offering significant layout advantages in structural design. The flexible connector can be made of the following flexible materials: polyvinyl alcohol (PVA), polyester (PET), polyimide (PI), polyethylene naphthalate (PEN), paper, textile materials, etc. Polyimide materials possess advantages such as high temperature resistance, low temperature resistance, chemical resistance, and good electrical properties, making them the most promising material for flexible electronics. However, in selecting a flexible substrate, besides considering high temperature resistance, the light transmittance, surface roughness, and material cost of the flexible substrate are also factors to consider. Polydimethylsiloxane (PDMS) is also a widely recognized flexible material, with advantages including easy availability, chemical stability, transparency, and good thermal stability. Its distinct adhesion and non-adhesion regions, especially under ultraviolet light, allow for easy adhesion of electronic materials to its surface. Although PET has a low conversion temperature, around 70℃-80℃, it is inexpensive and has good light transmittance, making it a cost-effective material for transparent conductive films.

[0057] Optionally, the roll-up storage assembly 2 also includes a guide shaft 23, which is rotatably mounted on the housing 21. The guide shaft 23 can be either an active or passive moving part, and is not limited thereto. Under the guidance of the guide shaft 23, the flexible display screen 1 can be smoothly rolled into or out of the housing 21. The guide shaft 23 can be a hollow cylindrical structure to reduce the weight of the terminal device and facilitate carrying. The diameters of the multiple guide shafts 23 can be the same or different to accommodate flexible display screens 1 with different degrees of bendability on both sides.

[0058] To increase the rollable area of ​​the flexible display screen 1, optionally, two rollable storage components 2 are provided, one on each side of the flexible display screen 1. It can be understood that one side of the flexible display screen 1 is rolled up and stored using one rollable storage component 2, and the other side is rolled up and stored using another rollable storage component 2, allowing both sides of the flexible display screen 1 to be rolled up, thereby increasing the rollable area of ​​the flexible display screen 1, making the display device smaller and more portable.

[0059] It should be noted that the flexible display screen 1 mentioned above refers to a flexible OLED (Organic Light-Emitting Diode). OLEDs are very thin and can be mounted on flexible materials such as plastic or metal foil. Using plastic instead of glass makes the display more durable and lighter. Flexible OLED panels are concave from top to bottom, with a bending radius of up to 700 mm. OLEDs use plastic substrates instead of the more common glass substrates. They utilize thin-film encapsulation technology and a protective film adhered to the back of the panel, making the panel flexible and less prone to breakage.

[0060] OLED devices consist of a substrate, cathode, anode, hole injection layer (HIL), electron injection layer (EIL), hole transport layer (HTL), electron transport layer (ETL), electron blocking layer (EBL), hole blocking layer (HBL), and emissive layer (EML). The substrate is the foundation of the entire device; all functional layers are deposited onto it. Glass is typically used as the substrate, but for flexible OLED devices, other materials such as plastics are required. The anode is connected to the positive terminal of the applied driving voltage. Holes in the anode move towards the emissive layer under the influence of this voltage. The anode needs to have sufficient light transmittance to allow the light emitted from the device to be observed. Indium-carbon oxide (ITO) is the most commonly used material for the anode.

[0061] The hole injection layer modifies the anode of the device and allows holes from the anode to be smoothly injected into the hole transport layer. The hole transport layer is responsible for transporting holes to the light-emitting layer. The electron blocking layer blocks electrons from the cathode at the interface of the light-emitting layer, increasing the electron concentration at the interface. The light-emitting layer is where electrons and holes recombine to form excitons, which then de-excite light. The hole blocking layer blocks holes from the anode at the interface of the light-emitting layer, thereby increasing the probability of electron-hole recombination at the interface and increasing the luminous efficiency of the device. The electron transport layer is responsible for transporting electrons from the cathode to the light-emitting layer. The electron injection layer modifies the cathode and transports electrons to the electron transport layer. Electrons in the cathode move towards the light-emitting layer under the drive of an external driving voltage, and then recombine with holes from the anode in the light-emitting layer.

[0062] Compared to traditional screens, flexible displays offer significant advantages. They are not only thinner and lighter but also consume less power, improving battery life. Furthermore, their flexibility and bendability greatly enhance durability, reducing the likelihood of accidental damage. Foldable screens require up to 200,000 folds to remain intact, demanding high flexibility and necessitating a custom-designed structure.

[0063] The display device provided in this embodiment uses a roll-up storage component 2 to roll up and store the flexible display screen 1. The flexible display screen 1 can extend out of the roll-up storage component 2 or be rolled into it, making it convenient to carry and meeting the flexible display needs of users with different display areas, thus improving the user experience. When the flexible display screen 1 is in a flattened state, it is supported by a support unit 31. Since multiple support units 31 are arranged along the length of the flexible display screen 1, they support different roll-up radius areas of the flexible display screen 1, avoiding screen deformation and improving the display quality. When the flexible display screen 1 needs to be stored, the speeds of adjacent support units 31 differ under the action of a differential 32, resulting in a roll-up speed difference between different roll-up radius areas of the flexible display screen 1. This prevents the movement trajectory of the flexible display screen 1 from changing and causing damage during the roll-up process, reduces the force pulling the support unit 31, improves the overall strength of the screen, reduces the deformation resistance generated by the flexible screen in the roll-up area, extends the service life of the flexible display screen 1, and ensures the display effect of the flexible display screen 1.

[0064] It should be noted that the display device provided in this embodiment can be applied to terminal devices such as mobile phones, tablets, wearable devices, in-vehicle devices, augmented reality (AR) / virtual reality (VR) devices, laptops, ultra-mobile personal computers (UMPCs), netbooks, and personal digital assistants (PDAs). It can also be applied to databases, servers, and service response systems based on terminal artificial intelligence. This embodiment does not impose any restrictions on the specific type of terminal device.

[0065] For example, the aforementioned terminal devices can be STAION (ST) stations in WLANs, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, computers, laptops, handheld communication devices, handheld computing devices, and / or other devices used for communication over wireless systems, as well as next-generation communication systems, such as mobile terminals in 5G networks, mobile terminals in future evolved Public Land Mobile Networks (PLMNs), or mobile terminals in future evolved Non-terrestrial Networks (NTNs).

[0066] As an example and not a limitation, when the aforementioned terminal device is a wearable device, the term "wearable device" can also refer to any device that utilizes wearable technology to intelligently design and develop everyday wearables, such as gloves and watches equipped with near-field communication modules. Wearable devices are portable devices worn directly on the body or integrated into a user's clothing or accessories. By attaching to the user and using a pre-bound electronic card, they perform operations such as payment and authentication. Wearable devices are not merely hardware devices; they achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined, wearable smart devices include those with comprehensive functions, large sizes, and the ability to perform complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those focused on a specific application function that require interaction with other devices such as smartphones, such as various smartwatches and smart bracelets with displays.

[0067] As an example, the aforementioned terminal device can also communicate with networks and other devices wirelessly. This wireless communication can use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, and Short Messaging Service (SMS).

[0068] This embodiment also provides a terminal device, including the aforementioned display device. The terminal device can be a mobile phone, tablet computer, or other wearable device. The flexible display screen 1 is curled and stored using the curling and storage component 2. The flexible display screen 1 can extend beyond the curling and storage component 2 or be rolled into it, making it convenient to carry and meeting users' flexible display needs for different display areas, thus improving the user experience. When the flexible display screen 1 is in a flattened state, it is supported by support units 31. Since multiple support units 31 are arranged along the length of the flexible display screen 1, and each support unit 31 supports different curling radius areas of the flexible display screen 1, screen deformation is avoided. This design enhances the screen's display quality. When the flexible display screen 1 needs to be folded up, the speeds of the two adjacent support units 31 differ under the action of the differential 32, resulting in different folding radius areas of the flexible display screen 1 having different folding speeds. This prevents damage caused by changes in the movement trajectory of the flexible display screen 1 during the folding process, reduces the force pulling the support units 31, improves the overall strength of the screen, reduces the deformation resistance generated by the flexible screen in the folding area, extends the service life of the flexible display screen 1, and ensures the display effect of the flexible display screen 1. The product is novel, highly recognizable, suitable for a wide range of people and various application scenarios. The screen folding and unfolding action is smooth and natural, easy to operate, not easily damaged, has a long service life, and provides a good user experience.

[0069] In terms of hardware, terminal devices possess a central processing unit (CPU), memory, input components, and output components; in other words, they are often microcomputer devices with communication capabilities. Furthermore, terminal devices can have multiple input methods, such as a keyboard, mouse, touchscreen, microphone, and camera, and can be adjusted as needed. Similarly, terminal devices often have multiple output methods, such as a receiver and display screen, which can also be adjusted as required.

[0070] In terms of software architecture, terminal devices must have an operating system, such as Windows Mobile, Symbian, Palm, Android, and iOS. At the same time, these operating systems are becoming increasingly open, leading to a proliferation of personalized applications developed based on these open operating system platforms, such as address books, calendars, notepads, calculators, and various games, greatly satisfying the needs of individual users.

[0071] In terms of communication capabilities, the terminal device features flexible access methods and high-bandwidth communication performance. It can automatically adjust the selected communication method based on the chosen service and the environment, thus facilitating user operation. The terminal device supports GSM, WCDMA, CDMA2000, TDSCDMA, Wi-Fi, and WiMAX, adapting to various network standards. It supports not only voice services but also a variety of wireless data services.

[0072] In terms of functionality, terminal devices place greater emphasis on user-friendliness, personalization, and multi-functionality. With the development of computer technology, terminal devices have shifted from a "device-centric" model to a "human-centric" model, integrating embedded computing, control technology, artificial intelligence, and biometric authentication technology, fully embodying the principle of human-centered design. Due to advancements in software technology, terminal devices can be customized to individual needs, becoming more personalized. Simultaneously, the integration of numerous software and hardware components within terminal devices has led to increasingly powerful functionalities.

[0073] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display device, characterized by include: Flexible display screen; A rollable storage component for rolling up and storing the flexible display screen; A support assembly includes a support unit and a differential. The support unit is used to support the flexible display screen. Multiple support units are arranged along the length direction of the flexible display screen. The multiple support units support different curling radius regions of the flexible display screen. Two adjacent support units are connected by a differential. The differential is used to adjust the speed difference between two adjacent support units to adjust the curling speed difference between different curling radius regions of the flexible display screen.

2. The display device according to claim 1, wherein The support unit includes a first support rod, which is arranged along the length of the flexible display screen and supported at the bottom of the flexible display screen. The first support rods of two adjacent support units are connected by a differential, which is used to adjust the speed difference between the two adjacent first support rods to adjust the curling speed difference of different curling radius regions of the flexible display screen.

3. The display device according to claim 2, wherein The differential includes a first drive gear, a second drive gear, a first transmission gear, and a second transmission gear. The first drive gear is provided with a mounting bracket, and the second drive gear is rotatably mounted on the mounting bracket. Both the first transmission gear and the second transmission gear are connected to the second drive gear. One of two adjacent first support rods is connected to the first transmission gear, and the other of two adjacent first support rods is connected to the second transmission gear.

4. The display device according to claim 3, wherein The first transmission gear is connected to the first support rod via a first lead screw and nut pair, and the second transmission gear is connected to another first support rod via a second lead screw and nut pair.

5. The display device according to claim 3, wherein Two mounting brackets are symmetrically arranged, and two second drive gears are symmetrically arranged, one of the second drive gears being rotatably mounted on one of the mounting brackets, and the other of the second drive gears being rotatably mounted on the other mounting bracket.

6. The display device according to claim 3, wherein The differential also includes a drive motor and a third drive gear. The drive motor is used to drive the third drive gear to rotate, and the third drive gear is connected to the first drive gear.

7. The display device according to claim 2, wherein The support unit further includes a second support rod connected to the first support rod. The second support rod is arranged along the width direction of the flexible display screen and is supported at the bottom of the flexible display screen.

8. The display device according to claim 7, wherein The support unit also includes a third support rod, which is supported at the bottom of the flexible display screen. The first support rod, the second support rod, and the third support rod are connected to form a triangular structure.

9. The display device according to claim 1, characterized in that, The support unit is made of carbon fiber.

10. The display device according to claim 1, characterized in that, The width of the support unit is the same as the width of the flexible display screen.

11. The display device according to claim 1, characterized in that, The support unit is made of flexible material.

12. The display device according to claim 1, characterized in that, The support unit is equipped with a limit sensor.

13. The display device according to claim 1, characterized in that, The rollable storage assembly includes a housing and a roller. The roller is rotatably mounted on the housing and is connected to the flexible display screen. Rotating the roller can cause the flexible display screen to be rolled up on the roller.

14. The display device according to claim 13, characterized in that, The curlable storage assembly also includes a guide shaft, which is rotatably mounted on the housing.

15. A terminal device, characterized in that, Includes the display device as described in any one of claims 1-14.

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