Display screen and electronic device

Abstract

The present application relates to the technical field of display. Provided are a display screen and an electronic device. The display screen comprises a cover plate and a display layer, wherein the cover plate is disposed on a light-emergent side of the display layer; the cover plate comprises a first region and a second region, the thickness of the first region of the cover plate being less than the thickness of the second region of the cover plate; and the cover plate comprises a first film layer, the thickness of the first film layer in the first region being less than the thickness of the first film layer in the second region. While ensuring the hardness of the cover plate, the present application can reduce the probability of problems during repeated bending of the display screen, such as the cover plate peeling off from a surface of the display screen or the cover plate aging and having obvious creases formed thereon, which affect the display effect.

Description

A display screen and an electronic device

[0001] This application claims priority to Chinese Patent Application No. 202510126609.1, filed with the State Intellectual Property Office of China on January 27, 2025, entitled “A Display Screen and Electronic Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic technology, and in particular to a display screen and an electronic device. Background Technology

[0003] With the development of flexible displays, various foldable electronic devices have emerged, such as foldable mobile phones. Because the flexible displays in foldable electronic devices need to repeatedly deform and recover as the devices are repeatedly bent, high requirements are placed on the bending resistance of the display cover, while the cover must also possess a certain degree of rigidity to protect the display.

[0004] During repeated bending, the cover plate may peel off from the display surface or age, forming noticeable creases, further affecting the display's performance. Related technologies improve the cover plate's bending resistance by designing it with uneven thickness within the bending zone. Another approach involves attaching a protective film to the cover plate surface. When the uneven thickness design is used, the adhesive layer fills in the depressions created by the uneven thickness. However, the adhesive layer within these depressions is prone to deformation during repeated bending, leading to irreversible deformation or peeling off the cover plate, again affecting the display's performance. Reducing the impact of adhesive layer deformation on the protective film and improving display performance is a pressing issue in the display industry. Summary of the Invention

[0005] In order to avoid the situation where the adhesive layer filling the depressions of cover plates with uneven thicknesses is used to bond the protective film to the surface of the cover plate, the adhesive layer filling the depressions is prone to deformation, which may have an adverse effect on the protective film layer or the display effect of the display screen. Therefore, this application proposes the following technical solution.

[0006] In a first aspect, embodiments of this application provide a display screen, the display screen including a cover plate and a display layer, wherein the cover plate is disposed on the light-emitting side of the display layer, the cover plate includes a first region and a second region, the thickness of the first region of the cover plate is less than the thickness of the second region of the cover plate, the cover plate includes a first film layer, the thickness of the first film layer in the first region is less than the thickness of the first film layer in the second region. The thickness of the cover plate in the bending region is less than the thickness in other regions, which can reduce the stress and deformation experienced by the cover plate during bending, improve the bending resistance of the cover plate, help extend the service life of the display screen, and reduce cover plate peeling and display screen damage caused by bending.

[0007] In some possible implementations, the first region includes the bending area.

[0008] In some possible implementations, the first region and the bending region coincide. The stress and pressure experienced by the cover plate during bending are concentrated in the bending region; thinning the cover plate within the bending region can effectively alleviate this stress and pressure. This improves the cover plate's bending resistance while maintaining its rigidity.

[0009] In some possible implementations, the first region includes a portion of the bending and non-bending areas. Thinning the cover plate within the non-bending area near the bending area can further alleviate the stress and pressure experienced by the cover plate during bending. A larger first region can also reduce the impact of uneven thickness design on the display's lighting effects, decrease the probability of users noticing the uneven thickness design, and improve the user experience.

[0010] In some possible implementations, the first region includes both a bent area and a non-bent area. The first region covers the entire cover plate. In this case, since the cover plate includes the first region, a second region is not required. The cover plate forms a recessed structure across the entire display screen. This minimizes the impact of the uneven thickness design of the cover plate on screen lighting. Furthermore, it makes the curvature of the recess on the display screen difficult for users to perceive during use, further enhancing the user experience.

[0011] In some possible implementations, the first region may also be within the bending area, and the distance between the edge of the first region and the edge of the bending area is less than a preset length. The preset length may be 2mm, 1.5mm, 1mm, or 0.5mm.

[0012] In some possible implementations, the first region includes a first sub-region, a second sub-region, and a third sub-region, wherein the first sub-region is disposed between the second sub-region and the third sub-region, the thickness of the second sub-region gradually decreases along the transition direction from the second sub-region to the first sub-region, and the thickness of the third sub-region gradually increases along the transition direction from the first sub-region to the third sub-region, and the thickness of the first sub-region is less than the thickness of the second sub-region, and the thickness of the first sub-region is less than the thickness of the third sub-region.

[0013] In some possible implementations, the thickness of the first film layer in the first sub-region is in the range of 0.018 mm to 0.044 mm.

[0014] In some possible implementations, the thickness of the cover plate varies along a smooth curve within the second and third sub-regions.

[0015] In some possible implementations, the length of the second sub-region is greater than or equal to 10 mm.

[0016] In some possible implementations, the length of the third sub-region is greater than or equal to 10 mm.

[0017] In some possible implementations, the bending area includes an inward bending area with the bending arc facing the light-emitting surface and an outward bending area with the bending arc facing the non-light-emitting surface when the display screen is in a bent state, and the first sub-region includes the inward bending area.

[0018] In some possible implementations, the first sub-region coincides with the inward bending area. When the display screen is folded, the inward bending area experiences greater pressure on the light-emitting side of the cover plate due to the bending arc facing the light-emitting surface and the smaller bending radius. This results in more concentrated stress, while the side of the cover plate closer to the display layer also experiences tensile force. This increases the probability of damage to the cover plate within the inward bending area, potentially causing irreversible deformation and resulting in noticeable creases on the cover plate surface. Reducing the thickness of the cover plate within the inward bending area can effectively decrease the pressure experienced during bending, thus lowering the probability of crease formation.

[0019] In some possible implementations, the first sub-region includes a portion of both the inward bending region and the outward bending region. The first sub-region, maintaining its thinnest thickness, extends not only into the inward bending region but also into the outward bending region. This helps to further alleviate stress on the cover plate within the inward bending region, improving the cover plate's bending resistance.

[0020] In some possible implementations, the first sub-region includes the inward bending area and the outward bending area. Both the inward and outward bending areas are set to the same thickness and are thinned to their minimum, making the overall appearance of the bending area more consistent and reducing visual abruptness caused by differences in thickness. The same thickness means that the stress and deformation experienced by the two areas during bending will be more similar, which helps improve the performance consistency of the entire bending area. For example, when the display is a touch display, this design can reduce problems such as differences in screen touch sensitivity caused by differences in cover plate thickness.

[0021] In some possible implementations, the material of the first film layer includes at least one of ultra-thin glass (UTG), colorless polyimide (CPI), or polyethylene terephthalate (PET).

[0022] In some possible implementations, the thickness of the first film layer in the second region is in the range of 0.36 mm to 0.44 mm.

[0023] In some possible implementations, the cover plate further includes a second membrane layer. Adding multiple membrane layers to the cover plate can increase its rigidity, thereby improving its impact resistance and enhancing its overall structural strength. The second membrane layer helps protect the first membrane layer, which may have unequal thicknesses.

[0024] In some possible implementations, the material of the second membrane layer includes at least one of colorless polyimide or polyethylene terephthalate. The second membrane layer can be formed using the aforementioned highly flexible and flexurally resistant materials, further enhancing the impact resistance and flexural strength of the cover plate.

[0025] In some possible implementations, the cover plate further includes a third adhesive layer, which bonds the first film layer and the second film layer together.

[0026] In some possible implementations, the first film layer is disposed between the second film layer and the display layer. The second film layer is disposed above the first film layer of unequal thickness, so that the second film layer can more effectively protect the first film layer.

[0027] In some possible implementations, the second film layer and the third adhesive layer can be designed to have the same thickness. The second film layer bends on the surface of the recessed structure formed by the unequal thickness design of the first film layer in the first region, so as to form a corresponding recessed structure on the surface of the cover plate. The second film layer can also effectively protect the first film layer in the first region.

[0028] In some possible implementations, the second film layer comprises multiple layers. Multiple second film layers can provide more effective and comprehensive protection for the first film layer. The multiple second film layers can be bonded together with adhesive layers.

[0029] In some possible implementations, the adhesive layer between multiple second film layers is designed to be of equal thickness.

[0030] In some possible implementations, the first film layer is thinned from the side closest to the second film layer in the first region, the second film layer and the third adhesive layer are designed to be of equal thickness, and the second film layer bends along the curvature of the surface of the first film layer in the first region.

[0031] In some possible implementations, the cover plate includes a plurality of the first regions, the plurality of first regions corresponding to a plurality of bending regions.

[0032] Secondly, this application also provides an electronic device, which includes a protective film, a first adhesive layer, and a display screen as described in any of the above embodiments, wherein the protective film is bonded to the surface of the cover plate away from the display layer by the first adhesive layer, the first adhesive layer is of uniform thickness, and the protective film includes a recessed structure corresponding to the first region.

[0033] Thirdly, this application also provides a cover plate, the cover plate including a first region and a second region, the thickness of the cover plate in the first region being less than the thickness of the cover plate in the second region, the cover plate including a first film layer, the thickness of the first film layer in the first region being less than the thickness of the first film layer in the second region, and the first region including a bending region.

[0034] Other implementation methods for the second and third aspects can refer to the first aspect, which will not be elaborated here.

[0035] Other features, aspects, and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of the structure of an electronic device according to an embodiment of this application;

[0038] Figure 2 is a schematic diagram of the stacked structure of an electronic device according to an embodiment of this application;

[0039] Figure 3 is a schematic diagram of the display screen in a flattened state according to an embodiment of this application;

[0040] Figure 4 is a schematic diagram of the stacked structure of the cover plate according to an embodiment of this application;

[0041] Figure 5 is a schematic diagram of the stacked structure of the cover plate according to another embodiment of this application;

[0042] Figure 6 is a schematic diagram of the structure of a cover plate according to an embodiment of this application;

[0043] Figure 7 is a structural schematic diagram of the cover plate according to another embodiment of this application;

[0044] Figure 8 is a structural schematic diagram of the cover plate according to another embodiment of this application;

[0045] Figure 9 is a structural schematic diagram of a cover plate according to another embodiment of this application;

[0046] Figure 10 is a schematic diagram of the shape of the recessed structure of the cover plate provided in the embodiment of this application;

[0047] Figure 11 is a schematic diagram of the structure of the bent area of ​​the display screen in a bent state according to some embodiments of this application;

[0048] Figure 12 is a schematic diagram of the structure of a cover plate according to an embodiment of this application;

[0049] Figure 13 is a structural schematic diagram of the cover plate according to another embodiment of this application;

[0050] Figure 14 is a schematic diagram of the cover plate according to another embodiment of this application;

[0051] Figure 15 is a structural schematic diagram of a cover plate according to another embodiment of this application;

[0052] Figure 16 is a schematic diagram of the stacked structure of the display layer of a display screen according to an embodiment of this application;

[0053] Figure 17 is a schematic diagram of the stacked structure of a display screen according to an embodiment of this application;

[0054] Figure 18 is a schematic diagram of the stacked structure of a display screen according to some embodiments of this application. Detailed Implementation

[0055] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the scope of this application or its application or use. This application may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0056] The terms "first," "second," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above" and "below" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0057] In this application, when a specific component is described as being located between a first component and a second component, an intermediary component may or may not be present between the specific component and the first or second component. When a specific component is described as connecting to other components, the specific component may be directly connected to the other components without an intermediary component, or it may not be directly connected to the other components but may have an intermediary component.

[0058] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0059] An electronic device of this application is described below with reference to Figure 1.

[0060] Figure 1 shows a schematic diagram of the structure of an electronic device.

[0061] As shown in Figure 1, the electronic device 100 may include at least one of the following: mobile phone, foldable electronic device, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, super mobile personal computer, netbook, cellular phone, PDA, AR device, VR device, artificial intelligence device, wearable device, in-vehicle device, smart home device, and smart city device. This application embodiment does not impose any special limitations on the type of electronic device 100.

[0062] Electronic device 100 may include a processor 110, internal memory 121, USB connector 130, charging management module 140, power management module 141, battery 142, antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone connector 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, memory card connector 120, and SIM card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, gyroscope sensor 180B, barometric pressure sensor 180C, magnetic sensor 180D, accelerometer sensor 180E, proximity sensor 180F, proximity light sensor 180G, fingerprint sensor 180H, temperature sensor 180J, touch sensor 180K, ambient light sensor 180L, bone conduction sensor 180M, etc.

[0063] The structures illustrated in the embodiments of this application do not constitute a limitation on the electronic device 100. In other embodiments of this application, the electronic device 100 may include more or fewer components than illustrated. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0064] Processor 110 may include one or more processing units, such as application processors, modem processors, graphics processing units (GPUs), image signal processors (ISPs), controllers, video codecs, digital signal processors (DSPs), baseband processors, and / or neural network processing units (NPUs). These different processing units may be independent devices or integrated into one or more processors.

[0065] The processor 110 can generate operation control signals based on the instruction opcode and timing signals to control the instruction fetching and execution.

[0066] The processor 110 may also include a memory for storing instructions and data. In some embodiments, the memory in the processor 110 may be a cache memory. This memory can store instructions or data that have been used or are frequently used by the processor 110.

[0067] In some embodiments, the processor 110 may include one or more interfaces. These interfaces may include integrated circuit I2C interfaces, I2S interfaces, PCM interfaces, UART interfaces, MIPI interfaces, GPIO interfaces, SIM interfaces, and / or USB interfaces, etc. The processor 110 can connect to modules such as touch sensors, audio modules, wireless communication modules, displays, or cameras through at least one of these interfaces.

[0068] It is understood that the interface connection relationships between the modules illustrated in the embodiments of this application are merely illustrative and do not constitute a limitation on the electronic device 100. In other embodiments of this application, the electronic device 100 may also employ different interface connection methods or combinations of multiple interface connection methods as described in the above embodiments.

[0069] USB connector 130 is a USB standard-compliant connector used to connect electronic device 100 to peripheral devices. USB connector 130 can be a Mini-USB connector, Micro-USB connector, USB Type-C connector, etc. USB connector 130 can be used to connect a charger to charge electronic device 100. It can also be used to connect other electronic devices to enable data transfer between electronic device 100 and other electronic devices. It can also be used to connect headphones to output audio stored in the electronic device. This connector can also be used to connect other electronic devices, such as VR devices.

[0070] The charging management module 140 receives charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 receives charging input from the wired charger via a USB connector 130. In some wireless charging embodiments, the charging management module 140 receives wireless charging input via a wireless charging coil. While charging the battery 142, the charging management module 140 can also supply power to the electronic device 100 via the power management module 141. The battery 142 may include at least one set of electrode terminals, each set including at least one positive terminal. In one embodiment, when the battery includes two sets of electrode terminals, the electronic device can be configured with two wired charging paths or two wireless charging paths, each wired or wireless charging path connecting to at least one set of electrode terminals. Multiple charging paths simultaneously charge the battery 142, increasing charging power and reducing temperature rise. In another embodiment, when the battery includes two sets of electrode terminals, one set is used for wired charging and the other for wireless charging, allowing for a more flexible charging circuit layout. Based on the same design concept, those skilled in the art can configure more than two sets of electrode terminals and more than two charging paths according to design needs.

[0071] The power management module 141 connects the battery 142, the charging management module 140, and the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140, providing power to the processor 110, internal memory 121, display screen 194, camera 193, etc. The power management module 141 can also monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage current, impedance). In some other embodiments, the power management module 141 may also be located within the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be housed in the same device.

[0072] The wireless communication function of electronic device 100 can be realized through antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, modem processor and baseband processor, etc.

[0073] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in electronic device 100 can be used to cover one or more communication frequency bands. Different antennas can also be multiplexed to improve antenna utilization. For example, antenna 1 can be multiplexed as a diversity antenna for a wireless local area network. In some other embodiments, the antennas can be used in conjunction with tuning switches.

[0074] The mobile communication module 150 can provide a wireless communication solution including at least one of 2G, 3G, 4G, 5G, or 6G for use on the electronic device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low-noise amplifier, etc. The mobile communication module 150 can filter, amplify, and otherwise process the electromagnetic waves received by the antenna 1 before transmitting them to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modem processor and convert it into electromagnetic waves for radiation via the antenna 1. In some embodiments, at least some functional modules of the mobile communication module 150 may be housed in the processor 110. In some embodiments, at least some functional modules of the mobile communication module 150 and at least some modules of the processor 110 may be housed in the same device.

[0075] The modem processor may include a modulator and a demodulator. The modulator modulates the low-frequency baseband signal to be transmitted into a mid-to-high frequency signal. The demodulator demodulates the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After processing by the baseband processor, the low-frequency baseband signal is transmitted to the application processor. The application processor outputs sound signals through an audio device (not limited to speaker 170A, receiver 170B, etc.) or displays images or videos through the display screen 194. In some embodiments, the modem processor may be a separate device. In other embodiments, the modem processor may be independent of the processor 110 and may be housed in the same device as the mobile communication module 150 or other functional modules.

[0076] The wireless communication module 160 can provide applications on the electronic device 100, including wireless local area network (WLAN) modules, Bluetooth modules, BLE modules, ultra-wideband (UWB) modules, global navigation satellite system (GNSS) modules, FM modules, near-field communication (NFC) modules, or infrared modules, etc. The wireless communication module 160 can be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via antenna 2, modulates and filters the electromagnetic wave signals, and sends the processed signal to processor 110. The wireless communication module 160 can also receive signals to be transmitted from processor 110, modulate and amplify them, and convert them into electromagnetic waves for radiation via antenna 2.

[0077] In some embodiments, antenna 1 of electronic device 100 is coupled to mobile communication module 150, and antenna 2 is coupled to wireless communication module 160, enabling electronic device 100 to communicate with other electronic devices via wireless communication technology. This wireless communication technology may include GSM, GPRS, CDMA, WCDMA, TD-SCDMA, LTE, BT, GNSS, WLAN, NFC, FM, and / or IR technology, etc. The GNSS may include GPS, Global Navigation Satellite System (GLONASS), BeiDou Navigation Satellite System (BDS), Quasi-Zenith Satellite System (QZSS), and / or satellite-based augmentation systems (SBAS).

[0078] Electronic device 100 can implement display functions through a GPU, display screen 194, and application processor. The GPU is a microprocessor for image processing, connected to the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations and graphics rendering. Processor 110 may include one or more GPUs, which execute program instructions to generate or modify display information.

[0079] Display screen 194 is used to display images, videos, etc. In some embodiments, electronic device 100 may include one or more display screens 194. Display screen 194 may be at least one of LCD, OLED, AMOLED, FLED, Miniled, MicroLED, Micro-OLED, quantum dot light-emitting diode (QLED) displays, etc.

[0080] In some possible implementations of this application, the display screen 194 may be a flexible display screen, which can be folded or bent along with the folding of the electronic device.

[0081] Electronic device 100 can realize camera function through camera 193, ISP, video codec, GPU, display screen 194, application processor AP, neural network processor NPU, etc.

[0082] Camera 193 can be used to acquire color image data and depth data of the subject. An ISP can be used to process the color image data acquired by camera 193. For example, when taking a picture, the shutter is opened, light passes through the lens to the camera's photosensitive element, the light signal is converted into an electrical signal, and the photosensitive element transmits this electrical signal to the ISP for processing, converting it into a visible image. The ISP can also perform algorithmic optimization of image noise, brightness, and skin tone. The ISP can also optimize parameters such as exposure and color temperature of the shooting scene. In some embodiments, the ISP can be integrated into camera 193.

[0083] In some embodiments, the camera 193 may consist of a color camera module and a 3D sensing module.

[0084] In some embodiments, the photosensitive element of the camera in a color camera module may include a CCD or a CMOS phototransistor. The photosensitive element converts light signals into electrical signals, which are then transmitted to the ISP for conversion into digital image signals. The ISP outputs the digital image signals to the DSP for processing.

[0085] In some embodiments, the 3D sensing module may be a structured light 3D sensing module. The structured light 3D sensing module may include an infrared emitter, an infrared camera module, etc. The structured light 3D sensing module first emits a light spot of a specific pattern onto the object being photographed, then receives the encoded pattern of the light spot on the object's surface, and compares it with the original projected light spot to determine the object's three-dimensional coordinates. These three-dimensional coordinates may include the distance between the electronic device 100 and the object being photographed. The 3D sensing module can obtain the distance (i.e., depth) between itself and the object being photographed by measuring the infrared reflection time, thus obtaining a 3D depth map.

[0086] Structured light 3D sensing modules can also be applied to fields such as facial recognition, motion-sensing game consoles, and industrial machine vision inspection. 3D sensing modules can also be applied to game consoles, AR, and VR.

[0087] In other embodiments, camera 193 may also consist of two or more cameras. These two or more cameras may include a color camera, which can be used to acquire color image data of the object being photographed. These two or more cameras may employ stereoscopic vision technology to acquire depth data of the object being photographed.

[0088] In some embodiments, the electronic device 100 may include one or more cameras 193. The electronic device 100 may include a front-facing camera 193 and a rear-facing camera 193. The front-facing camera 193 can be used to capture color image data and depth data of the photographer, while the rear-facing camera module can be used to capture color image data and depth data of the subject (such as a person, landscape, etc.) in front of the photographer.

[0089] In some embodiments, the CPU, GPU, or NPU in the processor 110 can process the color image data and depth data acquired by the camera 193. In some embodiments, the NPU can identify the skeletal points of the subject by using neural network algorithms based on skeletal point recognition technology, such as convolutional neural network algorithms (CNN). The CPU or GPU can also be used to run neural network algorithms to determine the skeletal points of the subject based on the color image data. In some embodiments, the CPU, GPU, or NPU can also be used to determine the body shape of the subject (such as body proportions and the degree of fatness or thinness of body parts between skeletal points) based on the depth data acquired by the camera 193 (which may be a 3D sensing module) and the identified skeletal points, and can further determine the beautification parameters for the subject, and finally process the captured image of the subject according to the body beautification parameters so that the body shape of the subject in the captured image is beautified.

[0090] Video codecs are used to compress or decompress digital video. Electronic device 100 may support one or more video codecs. Thus, electronic device 100 can play or record videos in various encoding formats, such as MPEG1, MPEG2, MPEG3, MPEG4, etc.

[0091] An NPU (Neural Processing Unit) is a computational processor for neural networks (NNs). By borrowing the structure of biological neural networks, such as the transmission patterns between neurons in the human brain, it can rapidly process input information and continuously learn on its own. NPUs enable intelligent cognitive applications in electronic devices, such as image recognition, facial recognition, speech recognition, and text understanding.

[0092] The memory card connector 120 can be used to connect memory cards, such as Micro SD cards and Nano SD cards, to expand the storage capacity of the electronic device 100. The memory card communicates with the processor 110 through the memory card connector 120 to perform data storage. In some embodiments, the memory card and SIM card can share the same connector in a time-sharing manner, and the electronic device can identify whether the card connected to the connector is a memory card or a SIM card, thus performing the corresponding functions. Alternatively, the memory card and SIM card can be simultaneously housed in the same connector, electrically connected to different contacts of the electronic device 100, respectively performing storage and SIM functions.

[0093] Internal memory 121 can be used to store computer executable program code, including instructions. Internal memory 121 may include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc. The data storage area may store data created during the use of electronic device 100 (such as audio data, phone book, etc.). In addition, internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc. Processor 110 executes various functional methods or data processing of electronic device 100 by running instructions stored in internal memory 121 and / or instructions stored in memory disposed in the processor.

[0094] Electronic device 100 can implement audio functions, such as music playback and recording, through audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone connector 170D, and application processor.

[0095] The audio module 170 is used to convert digital audio information into analog audio signals for output, and also to convert analog audio input into digital audio signals. The audio module 170 can also be used for encoding and decoding audio signals. In some embodiments, the audio module 170 may be located in the processor 110, or some functional modules of the audio module 170 may be located in the processor 110.

[0096] The speaker 170A, also known as a "loudspeaker," is used to convert audio electrical signals into sound signals. The electronic device 100 can listen to music through the speaker 170A or output audio signals for hands-free calling.

[0097] The receiver 170B, also known as the "earpiece," is used to convert audio electrical signals into sound signals. When the electronic device 100 answers a telephone call or voice message, the receiver 170B can be brought close to the ear to listen to the voice.

[0098] Microphone 170C, also known as a "microphone" or "voice transducer," is used to convert sound signals into electrical signals. When making a phone call or sending a voice message, the user can hold the microphone 170C close to their mouth and speak, inputting the sound signal into the microphone 170C. Electronic device 100 may have at least one microphone 170C. In some embodiments, electronic device 100 may have two or more microphones 170C, which, in addition to collecting sound signals, can also achieve noise reduction. In other embodiments, electronic device 100 may also use the microphones to identify the sound source, achieving directional recording functions, etc.

[0099] The headphone connector 170D is used to connect wired headphones. The headphone connector 170D can be a USB connector 130 or a 3.5mm connector compliant with the Open Mobile Terminal Platform (OMTP) standard, or a connector compliant with the Cellular Telecommunications Industry Association of the USA (CTIA) standard.

[0100] Pressure sensor 180A is used to sense pressure signals and convert them into electrical signals. In some embodiments, pressure sensor 180A can be disposed on display screen 194. There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors. A capacitive pressure sensor may include at least two parallel plates with conductive material. When force is applied to pressure sensor 180A, the capacitance between the electrodes changes. Electronic device 100 determines the pressure intensity based on the change in capacitance. When a touch operation is applied to display screen 194, electronic device 100 detects the intensity of the touch operation based on pressure sensor 180A. Electronic device 100 can also calculate the touch position based on the detection signal from pressure sensor 180A. In some embodiments, touch operations applied to the same touch position but with different touch operation intensities can correspond to different operation commands. For example, when a touch operation with an intensity less than a first pressure threshold is applied to the SMS application icon, a command to view an SMS is executed. When a touch operation with an intensity greater than or equal to the first pressure threshold is applied to the SMS application icon, a command to create a new SMS is executed.

[0101] The gyroscope sensor 180B can be used to determine the motion attitude of the electronic device 100. In some embodiments, the gyroscope sensor 180B can determine the angular velocity of the electronic device 100 around three axes (i.e., the x, y, and z axes). The gyroscope sensor 180B can be used for image stabilization. For example, when the shutter is pressed, the gyroscope sensor 180B detects the angle of the shake of the electronic device 100, calculates the distance that the lens module needs to compensate based on the angle, and controls the lens to move in the opposite direction to counteract the shake of the electronic device 100, thus achieving image stabilization. The gyroscope sensor 180B can also be used in navigation and motion-sensing game scenarios.

[0102] A barometric pressure sensor 180C is used to measure air pressure. In some embodiments, the electronic device 100 calculates altitude based on the air pressure value measured by the barometric pressure sensor 180C to assist in positioning and navigation.

[0103] The magnetic sensor 180D includes a Hall effect sensor. The electronic device 100 can use the magnetic sensor 180D to detect the opening and closing of the flip cover. When the electronic device is a foldable device, the magnetic sensor 180D can be used to detect the folding or unfolding of the electronic device, or the folding angle. In some embodiments, when the electronic device 100 is a flip phone, the electronic device 100 can detect the opening and closing of the flip cover based on the magnetic sensor 180D. Furthermore, based on the detected opening and closing state of the cover or the flip cover, features such as automatic flip unlocking can be set.

[0104] The 180E accelerometer can detect the magnitude of acceleration of electronic device 100 in various directions (typically three axes). When electronic device 100 is stationary, it can detect the magnitude and direction of gravity. It can also be used to identify the posture of electronic devices and is applicable to screen orientation switching, pedometers, and other applications.

[0105] A distance sensor 180F is used to measure distance. Electronic device 100 can measure distance via infrared or laser. In some embodiments, during a shooting scene, electronic device 100 can utilize the distance sensor 180F to measure distance for rapid focusing.

[0106] The proximity sensor 180G may include, for example, a light-emitting diode (LED) and a light detector, such as a photodiode. The LED may be an infrared LED. The electronic device 100 emits infrared light outward through the LED. The electronic device 100 uses the photodiode to detect infrared reflected light from nearby objects. When the intensity of the detected reflected light is greater than a threshold, it can be determined that an object is approaching the electronic device 100. When the intensity of the detected reflected light is less than the threshold, the electronic device 100 can determine that no object is approaching the electronic device 100. The electronic device 100 may use the proximity sensor 180G to detect when a user holds the electronic device 100 close to their ear for a phone call, so as to automatically turn off the screen to save power. The proximity sensor 180G can also be used in holster mode and pocket mode for automatic unlocking and locking of the screen.

[0107] The ambient light sensor 180L can be used to sense ambient light brightness. The electronic device 100 can adaptively adjust the brightness of its display screen 194 based on the sensed ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking a picture. The ambient light sensor 180L can also work in conjunction with the proximity sensor 180G to detect whether the electronic device 100 is obstructed, such as when the electronic device is in a pocket. When obstruction or being in a pocket is detected, some functions (such as touch functionality) can be disabled to prevent accidental operation.

[0108] The fingerprint sensor 180H is used to collect fingerprints. The electronic device 100 can utilize the characteristics of the collected fingerprints to achieve fingerprint unlocking, accessing application locks, taking photos with fingerprints, answering calls with fingerprints, etc.

[0109] Temperature sensor 180J is used to detect temperature. In some embodiments, electronic device 100 uses the temperature detected by temperature sensor 180J to execute a temperature handling strategy. For example, when the temperature detected by temperature sensor 180J exceeds a threshold, electronic device 100 reduces processor performance to reduce power consumption and implement thermal protection. In other embodiments, when the temperature detected by temperature sensor 180J is below another threshold, electronic device 100 heats battery 142. In still other embodiments, when the temperature is below yet another threshold, electronic device 100 may boost the output voltage of battery 142.

[0110] Touch sensor 180K, also known as a "touch device," can be located on display screen 194. The touch sensor 180K and display screen 194 together form a touchscreen, also known as a "touchscreen." Touch sensor 180K detects touch operations applied to or near it. The touch sensor can transmit the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through display screen 194. In other embodiments, touch sensor 180K may also be located on the surface of electronic device 100, in a different position than display screen 194.

[0111] The bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire vibration signals from the vibrating bone segments of the human vocal cords. The bone conduction sensor 180M can also contact the human pulse to receive blood pressure signals. In some embodiments, the bone conduction sensor 180M can also be incorporated into headphones to form bone conduction headphones. The audio module 170 can parse the voice signals from the vibrating bone segments of the vocal cords acquired by the bone conduction sensor 180M to realize voice functionality. The application processor can parse heart rate information from the blood pressure signals acquired by the bone conduction sensor 180M to realize heart rate detection functionality.

[0112] Button 190 may include a power button, volume buttons, etc. Button 190 may be a mechanical button or a touch button. Electronic device 100 may receive button input and generate key signal inputs related to user settings and function control of electronic device 100.

[0113] Motor 191 can generate vibration alerts. Motor 191 can be used for incoming call vibration alerts or for touch vibration feedback. For example, different vibration feedback effects can correspond to touch operations performed on different applications (such as taking photos, playing audio, etc.). Motor 191 can also correspond to different vibration feedback effects for touch operations performed on different areas of the display screen 194. Different application scenarios (such as time reminders, receiving messages, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also be customized.

[0114] Indicator 192 can be an indicator light, used to indicate charging status, power changes, or to indicate messages, missed calls, notifications, etc.

[0115] The SIM card interface 195 can be a hardware module used to connect a SIM card. The SIM card can be inserted into or removed from the SIM card interface 195 to make contact with and detach from the electronic device 100. The electronic device 100 can support one or more SIM card interfaces. The SIM card interface 195 can support Nano SIM cards, Micro SIM cards, SIM cards, etc. Multiple cards can be inserted into the same SIM card interface 195 simultaneously. The multiple cards can be of the same or different types. The SIM card interface 195 can also be compatible with different types of SIM cards. The SIM card interface 195 can also be compatible with memory cards. The electronic device 100 interacts with the network through the SIM card to realize functions such as calls and data communication. In some embodiments, the electronic device 100 uses an eSIM, i.e., an embedded SIM card. The eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100.

[0116] The cover plate of a foldable flexible display needs to have high rigidity to protect the various components in the flexible display, and also needs high bending resistance to avoid problems such as peeling or aging and the formation of obvious creases during repeated bending of the flexible display.

[0117] Some embodiments of this application disclose an electronic device including a display screen, which includes a cover plate. The cover plate has an uneven thickness design, which maintains high rigidity while improving bending resistance, reducing the probability of the cover plate peeling off from the display screen or aging and forming noticeable creases during repeated bending. The electronic device may also include a protective film to protect the display screen. The protective film can be adhered to the surface of the cover plate. The protective film can increase the rigidity of the display screen, improve its impact resistance, prevent the screen from shattering due to accidental drops or collisions, and also prevent scratches and wear on the display screen. Due to the uneven thickness design of the cover plate, the application of the protective film can be tailored to the uneven thickness design of the cover plate.

[0118] Figure 2 is a schematic diagram of the stacked structure of an electronic device according to an embodiment of this application. The electronic device proposed in this application will now be described with reference to Figure 2.

[0119] In some embodiments of this application, as shown in FIG2, the electronic device may include a display screen 200, a protective film 210, and a first adhesive layer 211. The display screen 200 includes a display layer 201 and a cover plate 202. The cover plate 202 is disposed on the light-emitting side of the display layer 201. The cover plate 202 includes a first region 10 and a second region 20. The thickness of the first region 10 of the cover plate 202 is less than the thickness of the second region 20 of the cover plate 202. The first region 10 corresponds to a bending area. The unequal thickness design of the first region 10 and the second region 20 of the cover plate 202 results in a recessed structure on the surface of the cover plate 202 away from the display layer 201. The protective film 210 is bonded to the surface of the cover plate 202 away from the display layer 201 via the first adhesive layer 211. The first adhesive layer 211 can be of uniform thickness, meaning the thickness of the first adhesive layer 211 remains constant at all locations. The protective film 210 includes a recessed structure. The recessed structure of the protective film 210 corresponds to the first region 10.

[0120] The cover plate 202 has a thinner thickness in the bending area than in other areas. This reduces the stress and deformation experienced by the cover plate 202 during bending, improving its bending resistance and extending the lifespan of the display screen 200. It also reduces the risk of cover plate peeling and damage to the display screen 200 due to bending. The recessed structure in the first area 10 helps maintain a flat surface during bending, reducing creases and contributing to a more aesthetically pleasing display screen 200 while enhancing the user experience. Furthermore, thinning the cover plate 202 reduces the thickness of the display screen 200 within the bending area. For inward-folding flexible displays, a thinner bending area allows for a tighter fit during folding, improving the folding effect. Thinning the bending area also reduces the overall weight of the device, making the device with the display screen 200 lighter and more portable. The first adhesive layer 211 has a uniform thickness design, which makes it less likely for the first adhesive layer 211 to deform when the display screen is bent, causing the protective film 210 to detach from the surface of the cover plate 202. It also reduces the impact of the first adhesive layer 211 on the display image, improving the display effect of the electronic device. Within the first region 10, the protective film 210 has a recessed structure corresponding to the first region 10. This allows the protective film 210 to bend according to the thickness of the cover plate 202, enabling the protective film 210 to more effectively protect the cover plate 202 with its uneven thickness design.

[0121] In some embodiments of this application, the protective film 210 can be designed with uniform thickness, that is, the thickness of the protective film 210 remains unchanged at each location.

[0122] In some embodiments of this application, the permissible tolerance for the first adhesive layer 211 or the protective film 210 is ±10%. Thickness variations at various locations of the first adhesive layer 210 or the protective film 210 within ±10% can be considered as uniform thickness.

[0123] In some embodiments of this application, the second region 20 of the cover plate 202 is designed with uniform thickness. For example, the thickness of the cover plate 202 in the second region 20 is equal to the length of line segment AB in FIG2.

[0124] In some implementations of this application, the various layers of the display screen 200 are bonded to each other by a second adhesive layer 203 disposed between the various layers. For example, the display layer 201 and the cover plate 202 are bonded together by the second adhesive layer 203.

[0125] In some embodiments of this application, the second adhesive layer 203 between the various layers of the display screen 200 can be designed with uniform thickness, that is, the thickness of the second adhesive layer 203 remains unchanged at all locations. When there are multiple second adhesive layers, the thicknesses of the different second adhesive layers can be equal or unequal.

[0126] In some embodiments of this application, the first adhesive layer 211 or the second adhesive layer 203 may be formed of an optically transparent adhesive.

[0127] Figure 3 is a schematic diagram of the display screen in a flattened state according to an embodiment of this application.

[0128] As shown in Figure 3, the areas where the various film layers within the display screen 200 deform under bending conditions are called bending areas 30, and the areas where the film layers do not deform under bending conditions are called non-bending areas 40. Each film layer of the display screen 200 includes bending areas 30 and non-bending areas 40, and the bending areas 30 and non-bending areas 40 of each film layer correspond to the bending areas 30 and non-bending areas 40 of the display screen 200. It should be understood that the areas where the film layers of the display screen 200 deform under bending conditions refer to the areas that deform relative to the non-bending conditions, where the non-bending conditions can also be called the flattened conditions. The display screen shown in Figure 3 is in the flattened condition. The stacked structure of the display screen 200 shown in Figure 2 is also a stacked structure in the flattened condition. Figure 2 also shows the bending areas 30 and non-bending areas 40 corresponding to those in Figure 3.

[0129] Figure 4 is a schematic diagram of the stacked structure of the cover plate according to an embodiment of this application.

[0130] As shown in Figure 4, the cover plate 202 may include a first film layer 2021. The thickness of the first film layer 2021 in the first region 10 is less than the thickness of the first film layer 2021 in the second region 20. In some embodiments of this application, the recessed structure on the surface of the cover plate 202 is formed by the unequal thickness design of the first film layer 2021 in the first region 10 and the second region 20. For example, the thickness of the first film layer 2021 in the second region 20 is shown by line segment ab in Figure 4.

[0131] In some embodiments of this application, the material of the first film layer 2021 may include at least one of ultra-thin flexible glass, colorless polyimide, and polyethylene terephthalate. The material of the first film layer 2021 can be ultra-thin flexible glass, which has high light transmittance, hardness, and good resilience. While ensuring the display effect of the screen, it can effectively resist impact, is not prone to creases during repeated bending, and can reduce the thickness of the cover plate 202.

[0132] In some embodiments of this application, the material of the first film layer 2021 can be ultra-thin flexible glass. Ultra-thin flexible glass has high hardness and strength, effectively protecting the display layer 201, and also has good resilience, making it less prone to creases. The unequal thickness design of the first film layer 2021 further improves its bending resistance, reducing the stress in the area corresponding to the bending zone 30, thus making the cover plate 202 less prone to breakage. The first film layer can be a single layer of ultra-thin flexible glass or multiple layers of ultra-thin flexible glass. The cover plate 202 can include a single first film layer or multiple first film layers.

[0133] In some embodiments of this application, the first film layer 2021 may be of uniform thickness within the second region 20. For example, the first thickness of the first film layer 2021 within the second region 20 may be 0.4 mm, with an allowable tolerance of ±10%. That is, the first thickness may be in the range of 0.36 mm to 0.44 mm (inclusive). For example, the first thickness may be 0.36 mm, 0.38 mm, 0.4 mm, 0.42 mm, or 0.44 mm, etc.

[0134] Figure 5 is a schematic diagram of the stacked structure of the cover plate according to another embodiment of this application.

[0135] As shown in Figure 5, the cover plate 202 may include a first film layer 2021 and a second film layer 2022. The thickness of the first film layer 2021 in the first region 10 is less than the thickness of the first film layer 2021 in the second region 20. Providing multiple film layers in the cover plate 202 can increase the hardness of the cover plate 202, thereby improving its impact resistance and enhancing its overall structural strength. The second film layer 2022 helps protect the first film layer 2021, which has an uneven thickness.

[0136] In some embodiments of this application, the material of the second film layer 2022 may include at least one of colorless polyimide and polyethylene terephthalate. The second film layer 2022 can be formed using the aforementioned highly flexible and bend-resistant material, which further helps to improve the impact resistance and bend resistance of the cover plate 202.

[0137] In some embodiments of this application, as shown in FIG5, the cover plate 202 further includes a third adhesive layer 2023. The first film layer 2021 and the second film layer 2022 are bonded to each other by the third adhesive layer 2023.

[0138] In some embodiments of this application, when the cover plate 202 is disposed in the display screen 200, the first film layer 2021 is disposed between the second film layer 2022 and the display layer 201. The second film layer 2022 is disposed above the first film layer 2021 of unequal thickness, so that the second film layer 2022 can more effectively protect the first film layer 2021.

[0139] In some embodiments of this application, the second film layer 2022 and the third adhesive layer 2023 can be designed to have the same thickness. The second film layer 2022 bends on the surface of the recessed structure formed in the first region 10 along with the unequal thickness design of the first film layer 2021, so as to form a corresponding recessed structure on the surface of the cover plate 202. The second film layer 2022 can also effectively protect the first film layer 2021 in the first region 10.

[0140] In some embodiments of this application, the cover plate 202 may include multiple layers of second film layers 2022. Multiple second film layers 2022 may be bonded together by adhesive layers.

[0141] In the case where the cover plate 202 may include multiple layers of second film layers 2022, the material and thickness of each second film layer 2022 may be the same or different.

[0142] In some embodiments of this application, the adhesive layer between the plurality of second film layers 2022 is designed with equal thickness, and the thickness of the adhesive layer remains unchanged.

[0143] The first region will be described below with reference to Figures 6 to 9.

[0144] In some embodiments of this application, the range of the first region may correspond to the range of the bending region 30.

[0145] Figure 6 is a schematic diagram of the structure of a cover plate according to an embodiment of this application.

[0146] For example, as shown in Figure 6, the area of ​​the first region 601 can overlap with the area of ​​the bending region 30. The bending region 30 is the area where the cover plate 202 deforms when folded. The stress and pressure on the cover plate 202 during bending are concentrated in the bending region 30. Thinning the cover plate 202 within the bending region 30 can effectively alleviate the stress and pressure. While maintaining the rigidity of the cover plate 202, the bending resistance of the cover plate 202 is improved.

[0147] Figure 7 is a structural schematic diagram of a cover plate according to another embodiment of this application.

[0148] As shown in Figure 7, the first region 701 may include a portion of the bending region 30 and the non-bending region 40. For example, the non-bending region 40 includes region 401. The first region 701 may include the bending region 30 and region 401. When the cover plate 202 is applied to the display screen 200, thinning the cover plate 202 within region 401 near the bending region 30 can further alleviate the stress and pressure borne by the cover plate 202 during bending. The larger first region 701 can also reduce the impact of uneven thickness design on the light and shadow effects of the display screen 200, reduce the probability of users noticing the uneven thickness design, and improve the user experience.

[0149] Figure 8 is a structural schematic diagram of the cover plate according to another embodiment of this application.

[0150] As shown in Figure 8, the first region 801 may include a bent area 30 and a non-bent area 40. That is, the first region 801 covers the entire cover plate 202. In this case, since the cover plate 202 includes the first region 801, there is no need to provide a second region. The cover plate 202 forms a recessed structure across its entire surface. This minimizes the impact of the uneven thickness design of the cover plate 202 on screen lighting and shadows. Furthermore, it makes the curvature of the recess on the display screen 200 difficult for users to perceive during use, further enhancing the user experience.

[0151] Figure 9 is a structural schematic diagram of a cover plate according to another embodiment of this application.

[0152] In some embodiments of this application, the range of the first region may also correspond to a portion of the bending area 30. For example, as shown in FIG9, the first region 901 is within the range of the bending area 30. In some embodiments of this application, the distance between the edge of the first region 901 and the edge of the bending area 30 is less than a preset length. The preset length may be 2 mm, 1.5 mm, 1 mm, or 0.5 mm. Exemplarily, the distance between the edge of the first region 901 and the edge of the bending area 30 can be represented by the length of line segment d as shown in FIG9.

[0153] In some embodiments of this application, the first region may be formed with a recessed structure.

[0154] Figure 10 is a schematic diagram of the shape of the recessed structure of the cover plate provided in the embodiment of this application. In addition to the shape of the recessed structure of the first region shown in Figures 4 to 9, the recessed structure of the first region can also be any shape among Figures 10(a) to 10(d).

[0155] For example, as shown in Figure 10(a), the shape of the recessed structure in the first region 10a can be an inverted trapezoid, with the upper base of the trapezoid located at the bottom of the recessed structure and the lower base of the trapezoid being the opening portion of the recessed structure.

[0156] For example, as shown in Figure 10(b), the shape of the concave structure in the first region 10b can be a stepped shape formed by the superposition of two inverted trapezoids. A smaller inverted trapezoidal concave structure is formed at the bottom of the first inverted trapezoidal concave structure.

[0157] For example, as shown in Figure 10(c), the shape of the concave structure in the first region 10c can be an arc shape.

[0158] For example, as shown in Figure 10(d), the shape of the concave structure in the first region 10d can be an inverted triangle.

[0159] The bending zone 30 will be further described below with reference to Figure 11.

[0160] The embodiments of this application do not limit the bending direction of the display screen. The display screen can be bent inward, that is, the light-emitting surfaces are folded together, or it can be bent outward, that is, the light-emitting surfaces are folded in opposite directions.

[0161] Figure 11 is a schematic diagram of the bending area in a bending state according to an embodiment of this application.

[0162] In some embodiments of this application, taking an inwardly bent display screen 200 as an example, a structural schematic diagram of the bent area 30 in the bent state is shown. For example, the structure of the bent area 30 in the bent state is as shown in FIG11. The light-emitting surface of the display screen 200 is bent inward to form a teardrop shape as shown in FIG11. FIG11 only shows a portion of the non-bent area 40 and the entire bent area 30. The bent area 30 is located between points E1 and E2 shown in FIG11, that is, the area covered by the curved surface formed by connecting points E1, F1, F2 and E2 in sequence as shown by the dashed arrow in FIG11.

[0163] The bending area 30 includes an inward bending area 50 and an outward bending area 60. The inward bending area 50 refers to the region where the bending arc faces inward towards the inside of the display screen 200, as shown by the dashed arrow in Figure 10, covering the area formed by the curved surfaces of connection points F1 and F2. The outward bending area 60 refers to the region where the bending arc faces outward towards the outside of the display screen 200, as shown by the dashed arrow in Figure 11, covering the areas formed by the curved surfaces of connection points E1 and F1, and the areas covered by the curved surfaces of connection points F2 and E2.

[0164] When the entire display screen 200 is folded, it begins to deform at point E1, bending outwards. At point F1, it changes from bending outwards to bending inwards, and at point F2, it changes from bending inwards to bending outwards. At point E2, the outward bending ends and connects with the non-bending area 40 of the display screen 200.

[0165] In some embodiments of this application, E1 and E2 are inflection points between the non-bending region 40 and the outward bending region 60, and F1 and F2 are inflection points between the outward bending region 60 and the inward bending region 50. In other embodiments of this application, E1 and E2 may be referred to as outer R tangent points, and F1 and F2 may be referred to as outer R tangent points.

[0166] In some embodiments of this application, the unequal thickness of the cover plate 202 can be achieved by reducing its thickness. The method of reducing the thickness of the cover plate 202 will be described in conjunction with Figure 11, which illustrates the inward bending region 50 and the outward bending region 60, as well as Figures 12 to 15.

[0167] Figure 12 is a schematic diagram of the structure of a cover plate according to an embodiment of this application.

[0168] In some embodiments of this application, as shown in FIG12, the display screen 200 shown in FIG12 is in a flattened state, corresponding to the bent state shown in FIG11. In the flattened state, the inward bending area 50 and the outward bending area 60 in FIG11 are also marked at the corresponding positions in FIG12.

[0169] In some embodiments of this application, as shown in FIG12, the first region 10 includes a first sub-region 101, a second sub-region 102, and a third sub-region 103. The first sub-region 101 is disposed between the second sub-region 102 and the third sub-region 103. Along the transition direction from the second sub-region 102 to the first sub-region 101, the thickness of the second sub-region 102 gradually decreases. Along the transition direction from the first sub-region 101 to the third sub-region 103, the thickness of the third sub-region 103 gradually increases. The thickness of the first sub-region 101 is less than the thickness of the second sub-region 102. The thickness of the first sub-region 101 is less than the thickness of the third sub-region 103.

[0170] In some embodiments of this application, the first sub-region 101 includes an inwardly bent region 50.

[0171] In some embodiments of this application, as shown in FIG12, the first sub-region 101 coincides with the inward bending region 50. When the display screen 200 is folded, the inward bending region 50 experiences greater compression on the light-emitting side of the cover plate 202 within this region due to the bending arc facing the light-emitting surface and the smaller bending radius. This results in more concentrated stress, while the side of the cover plate 202 closer to the display layer also experiences tensile force. This increases the probability of damage to the cover plate 202 within the inward bending region 50, potentially causing irreversible deformation and forming obvious creases on the surface of the cover plate 202. Reducing the thickness of the cover plate 202 within the inward bending region 50 to its thinnest point effectively reduces the compression experienced by the cover plate 202 during bending, thus lowering the probability of creases forming on the cover plate 202.

[0172] Figure 13 is a structural schematic diagram of a cover plate according to another embodiment of this application.

[0173] In some embodiments of this application, for example, as shown in FIG13, the first sub-region 101 includes a portion of an inward bending region 50 and an outward bending region 60. For example, the outward bending region 60 includes region 1301. The first sub-region 101 includes the inward bending region 50 and region 1301. The first sub-region 101, whose thickness is kept to the thinnest, includes not only the inward bending region 50 but also extends to region 1301 located within the outward bending region 60 near the inward bending region 50. This helps to further alleviate the stress on the cover plate 202 within the inward bending region 50 and improve the bending resistance of the cover plate 202.

[0174] Figure 14 is a structural schematic diagram of a cover plate according to another embodiment of this application.

[0175] For example, as shown in Figure 14, the first sub-region 101 includes an inward bending area 50 and an outward bending area 60. The inward bending area 50 and the outward bending area 60 are of equal thickness. The second sub-region 102 and the third sub-region 103 are located in the non-bending area of ​​the display screen 200. This makes the appearance of the entire bending area 30 more consistent and reduces the visual abruptness caused by differences in thickness. The same thickness means that the stress and deformation experienced by the two areas during bending will be more similar, which helps to improve the consistency of performance of the entire bending area 30. For example, when the display screen 200 is a touch display screen, this design can reduce problems such as differences in screen touch sensitivity caused by differences in the thickness of the cover plate 202.

[0176] In some embodiments, as shown in FIG14, since the area of ​​the platform area, i.e. the first sub-area 101, is expanded, the area of ​​the first area can also cover the entire area of ​​the cover plate 202. This not only makes the appearance of the entire bending area 30 more consistent, but also makes the appearance of the entire surface of the cover plate 202 more consistent, so that the thickness change is not obvious and is not easily noticed by the user. This reduces the impact of the uneven thickness design on the display effect of the display screen 200, thereby improving the user experience.

[0177] Figure 15 is a structural schematic diagram of a cover plate according to another embodiment of this application.

[0178] In some embodiments, as shown in FIG15, a first sub-region is not provided within the first region 101. The first region 101 includes a second sub-region 102 and a third sub-region 103. The thickness of the cover plate 202 within the second sub-region 102 and the third sub-region 103 is symmetrical with respect to the centerline of the bending region 30. The centerline of the bending region 30 is shown as the straight line where point D is located in FIG1. ​​The stress on the cover plate 202 within the bending region 30 during bending is related to the deformation of the cover plate within the bending region 30; the smaller the radius of curvature of the bend, the greater the stress. The radius of curvature at the centerline of the bending region 30 is the smallest, and it is the location where the cover plate 202 is most likely to deform and develop creases. By means of the above method, the stress on the cover plate 202 at the centerline of the bending region 30 can be effectively reduced, which helps to improve the bending resistance of the cover plate 202 and reduce the probability of creases appearing on the cover plate 202 at this external location.

[0179] In some embodiments of this application, the second thickness of the cover plate 202 within the first sub-region is in the range of 0.02 mm to 0.04 mm (inclusive), and a tolerance of ±10% is allowed for any second thickness value within this range. In other words, at the thinnest point of the cover plate 202, its thickness is in the range of 0.02 mm to 0.04 mm.

[0180] Specifically, the second thickness should fall between the minimum and maximum values ​​corresponding to each thickness value, where the minimum value is the thickness value minus 10%, and the maximum value is the thickness value plus 10%. For example, if the second thickness is 0.02 mm, its actual thickness should be between 0.018 mm and 0.022 mm; if the second thickness is 0.03 mm, its actual thickness should be between 0.027 mm and 0.033 mm; and if the second thickness is 0.04 mm, its actual thickness should be between 0.036 mm and 0.044 mm. Therefore, overall, the actual thickness of the film should be within the range of 0.018 mm to 0.044 mm (inclusive). In other words, the second thickness should be within the range of 0.018 mm to 0.044 mm (inclusive), a range that takes into account any value within the thickness range of 0.2 mm to 0.4 mm and its ±10% tolerance.

[0181] In some embodiments of this application, the thickness of the first region varies along a smooth curve within the second sub-region 102.

[0182] In other embodiments of this application, the thickness of the first region varies along a smooth curve within the third sub-region 103.

[0183] In other words, the thickness of the first region is smoothly transitioned, and the increase or decrease in thickness is continuous without sudden jumps or abrupt changes. The thickness change curve is a continuous curve without inflection points.

[0184] The smooth thickness transition not only makes the cover plate 202 more aesthetically pleasing and reduces the probability that users will notice the recess in the middle of the display screen 200, but also reduces the impact of the recess on the screen's light and shadow effects. The smooth curved surface can provide a flatter display effect when the display screen 200 is unfolded, reducing visual interference caused by creases.

[0185] In some embodiments of this application, the thickness of the first region of the cover plate 202 is symmetrical with respect to the centerline of the first region. This makes the forces on both sides of the cover plate 202 that deform during folding more uniform, reducing the probability of the cover plate 202 peeling or breaking due to uneven forces on both sides of the first region.

[0186] In some embodiments of this application, the length of the second sub-region 102 in the first region of the cover plate 202 is greater than or equal to 10 mm in a direction perpendicular to the stacking direction. For example, as shown in FIG12, the length of the second sub-region 102 in a direction perpendicular to the stacking direction can be represented by the length of the line segment D1 indicated by the arrow marking the second sub-region 102. In FIG13 and FIG14, the length of the second sub-region 102 is also marked at the corresponding position by the line segment D1. The length of D1 is greater than or equal to 10 mm.

[0187] In some embodiments of this application, the length of the third sub-region 103 in the first region of the cover plate 202 is greater than or equal to 10 mm in a direction perpendicular to the stacking direction. For example, as shown in FIG12, the length of the third sub-region 103 in a direction perpendicular to the stacking direction can be represented by the length of the line segment D2 indicated by the arrow marking the third sub-region 103. In FIG13 to FIG15, the length of the third sub-region 103 is also marked at the corresponding position by the line segment D2. The length of D2 is greater than or equal to 10 mm.

[0188] The second sub-region 102 and the third sub-region 103 are the transition areas where the thickness of the cover plate 202 changes. The longer the length of the transition area, the larger the transition area. A larger transition area has less impact on the screen's light and shadow, which can reduce the impact of the thinned area on the display effect of the display screen 200. At the same time, it makes it difficult for users to perceive the uneven thickness of the cover plate, that is, it makes it difficult for users to perceive the existence of the recess.

[0189] Figure 16 is a schematic diagram of the stacked structure of the display layer according to an embodiment of this application.

[0190] In some embodiments of this application, as shown in FIG16, the display layer 201 sequentially includes a back film layer 2011, a fourth adhesive layer 2012, and a display panel 2013. The display panel 2013 is connected to an electronic device equipped with the display screen 200 to realize display, touch, and other functions; the fourth adhesive layer 2012 is used to bond the back film layer 2011 and the display panel 2013 together; the back film layer 2011 is used to support the display panel 2013.

[0191] In some embodiments, the fourth adhesive layer 2012 may be formed of pressure sensitive adhesive tape (PSA), which can bond the display panel 2013 and the back film layer 2011 together by applying pressure for a short time without the need for heating or other treatments.

[0192] In some embodiments, the backsheet layer 2011 may be formed of polyethylene terephthalate or polyimide (PI).

[0193] Figure 17 is a schematic diagram of the stacked structure of a display screen according to an embodiment of this application.

[0194] In some embodiments of this application, as shown in FIG17, the display screen 200 may further include a support layer 206. The support layer 206 is disposed on the side of the display layer 201 away from the cover plate 202. The support layer 206 mainly serves to support the display layer 201, and the support layer 206 can also play a role in fixing the bending trajectory during the bending process of the display screen 200.

[0195] In some embodiments of this application, the support layer 206 may include a bamboo book 2061 and a fifth adhesive layer 2062. The bamboo book 2061 is formed of a non-bending material, and through its cooperation with the hinge of the foldable electronic device carrying the display screen 200, the bamboo book 2061 supports the display screen 200 to follow a predetermined bending trajectory during bending, thereby protecting the bending area 30.

[0196] In some embodiments of this application, the material of the bamboo book 2061 may include at least one of stainless steel, titanium alloy, and carbon fiber.

[0197] In some embodiments of this application, the support layer 206 may further include a support layer located on the side of the bamboo book 2061 near the fifth adhesive layer 2062. The support layer helps to fix the bamboo book 2061 and further prevent its displacement, and also acts as a buffer to reduce the impact on the bending area 30 when the display screen is dropped in a bent state. In some implementations of this application, the support layer may be formed using double-sided PI tape.

[0198] In some embodiments of this application, an adhesive dispensing area may be provided on the bamboo book 2061 for bonding the display screen and the housing of the foldable electronic device. The adhesive dispensing area may be located in the portion of the bamboo book 2061 within the outward bending area 60.

[0199] In some embodiments of this application, a through hole is provided in the bending area 30 of the bamboo book 2061. The through hole can reduce the rigidity of the bamboo book 2061 in the bending area 30, making the bamboo book 2061 easier to bend, improving the flexibility of the bamboo book 2061, and also reducing the weight of the bamboo book 2061, thereby reducing the overall weight of the display screen 200.

[0200] In some embodiments of this application, the through holes include a plurality of through holes, which are evenly distributed within the inward bending area 50 and / or the outward bending area 60.

[0201] In some embodiments of this application, the density of through holes in the inward bending region 50 is higher than that in the outward bending region 60. The portion of the bamboo book 2061 located in the inward bending region 50 will undergo greater deformation when folded. Providing a higher density of through holes in the inward bending region 50 can improve the flexibility of the bamboo book 2061, while reducing the density of through holes in the outward bending region 60 can ensure the strength of the bamboo book 2061 and prevent the impact resistance of the bending region 30 from decreasing due to excessive through hole density.

[0202] In some embodiments of this application, no through holes are provided in the dispensing area of ​​the bamboo book 2061 to ensure the bonding strength between the dispensing area and the electronic device housing.

[0203] The cover plate 202 proposed in this application embodiment can also be applied to multiple displays 200 having multiple bending areas 30.

[0204] Figure 18 is a schematic diagram of the stacked structure of an electronic device according to some embodiments of this application.

[0205] For example, as shown in Figure 18, the cover plate 202 of the display screen 200 includes two first regions 10 to correspond to the two bending regions 30 of the display screen 200, respectively.

[0206] When a protective film 210 needs to be adhered to the cover plate 202 of a display screen 200 having multiple first regions 10 to protect the cover plate 202 of unequal thickness, as shown in FIG18, the protective film 210 is adhered to the surface of the cover plate 202 away from the display layer 201 by a first adhesive layer 211. The first adhesive layer 211 is designed to be of uniform thickness, and the protective film 210 bends within the first region 10 along with the recessed structure of the cover plate.

[0207] The electronic device in any of the above embodiments can be the electronic device 100 shown in FIG1. ​​The display screen in any of the above embodiments can be the display screen 194 of the electronic device 100.

[0208] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0209] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A display screen, characterized in that, The display screen includes a cover plate and a display layer. The cover plate is disposed on the light-emitting side of the display layer. The cover plate includes a first region and a second region. The thickness of the first region of the cover plate is less than the thickness of the second region of the cover plate. The cover plate includes a first film layer. The thickness of the first film layer in the first region is less than the thickness of the first film layer in the second region.

2. The display screen according to claim 1, characterized in that, The first region includes the bending area.

3. The display screen according to claim 1, characterized in that, The first region includes a bent area and a portion of the non-bent area.

4. The display screen according to any one of claims 1-3, characterized in that, The first region includes a first sub-region, a second sub-region, and a third sub-region. The first sub-region is located between the second sub-region and the third sub-region. Along the transition direction from the second sub-region to the first sub-region, the thickness of the second sub-region gradually decreases, and along the transition direction from the first sub-region to the third sub-region, the thickness of the third sub-region gradually increases. The thickness of the first sub-region is less than the thickness of the second sub-region, and the thickness of the first sub-region is less than the thickness of the third sub-region.

5. The display screen according to claim 4, characterized in that, The thickness of the first film layer in the first sub-region is in the range of 0.018 mm to 0.044 mm.

6. The display screen according to claim 4, characterized in that, The thickness of the cover plate varies along a smooth curve in the second and third sub-regions.

7. The display screen according to claim 4, characterized in that, The length of the second sub-region is greater than or equal to 10 mm.

8. The display screen according to claim 4, characterized in that, The length of the third sub-region is greater than or equal to 10 mm.

9. The display screen according to any one of claims 4-8, characterized in that, The bending area includes an inward bending area where the bending arc of the display screen faces the light-emitting surface and an outward bending area where the bending arc faces the non-light-emitting surface, and the first sub-region includes the inward bending area.

10. The display screen according to claim 9, characterized in that, The first sub-region also includes a portion of the outward bending region.

11. The display screen according to any one of claims 1-10, characterized in that, The material of the first film layer includes at least one of ultrathin flexible glass, colorless polyimide, or polyethylene terephthalate.

12. The display screen according to any one of claims 1-10, characterized in that, The thickness of the first film layer in the second region is in the range of 0.36 mm to 0.44 mm.

13. The display screen according to any one of claims 1-12, characterized in that, The cover plate further includes a second film layer, the material of which includes at least one of colorless polyimide or polyethylene terephthalate.

14. The display screen according to claim 13, characterized in that, The first film layer is located between the second film layer and the display layer.

15. The display screen according to claim 14, characterized in that, The cover plate also includes a third adhesive layer, the first film layer and the second film layer are bonded to each other by the third adhesive layer, the first film layer is thinned from the side closer to the second film layer in the first region, the second film layer and the third adhesive layer are designed to be of equal thickness, and the second film layer bends with the curvature of the surface of the first film layer in the first region.

16. The display screen according to claim 13, characterized in that, The second film layer comprises multiple layers.

17. The display screen according to any one of claims 1-16, characterized in that, The cover plate includes a plurality of first regions, and the plurality of first regions correspond to a plurality of bending areas.

18. An electronic device, characterized in that, The electronic device includes a protective film, a first adhesive layer, and a display screen as described in any one of claims 1-17, wherein the protective film is bonded to the surface of the cover plate away from the display layer via the first adhesive layer, the first adhesive layer is of uniform thickness, and the protective film includes a recessed structure corresponding to the first region.

19. A cover plate, characterized in that, The cover plate includes a first region and a second region, wherein the thickness of the first region of the cover plate is less than the thickness of the second region of the cover plate, the cover plate includes a first film layer, wherein the thickness of the first film layer in the first region is less than the thickness of the first film layer in the second region, and the first region includes a bending area.

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