CN118158301A - Display method of foldable terminal and terminal equipment - Google Patents

Abstract

The present application provides a display method and terminal device for a foldable terminal, which is conducive to improving the accuracy of opening and closing detection and avoiding the problem of abnormal screen display switching. The method is applied to a foldable terminal, the foldable terminal includes a foldable screen, the foldable screen includes a touch electrode structure for touch detection, the touch electrode structure includes a plurality of capacitor structures arranged in an array, the foldable screen includes a foldable area, and the foldable screen is folded or unfolded through the foldable area. The method includes: obtaining a first capacitance value corresponding to at least one capacitor structure in the foldable area; determining the display area of the foldable terminal according to the first capacitance value.

Description

Display method and terminal device of foldable terminal

Technical Field

The present application relates to the field of terminal technology, and in particular to a display method and terminal device of a foldable terminal.

Background technique

The foldable screen has the characteristic of being foldable and can achieve a variety of usage postures, such as a folding posture and an unfolding posture. Terminals with foldable screens (referred to as foldable terminals) generally adopt two folding methods: inward folding and outward folding. Taking the inward folding foldable terminal as an example, in addition to the folding screen (inner screen), the foldable terminal also includes an outer screen. In the process of switching from a folding posture to an unfolding posture, or from an unfolding posture to a folding posture, the foldable terminal performs an opening and closing detection on the folding screen to determine whether the display interface is switched between the inner screen and the outer screen. Among them, the opening and closing detection is used to detect whether the folding screen is switched from a folding posture to an unfolding posture, or from an unfolding posture to a folding posture.

Currently, foldable terminals can use Hall devices and magnets to perform opening and closing detection on foldable screens. However, this solution requires additional devices, which takes up architectural space. When there are other magnetic devices in the space, it may interfere with the magnetism of the magnets on the foldable terminal, making the opening and closing detection inaccurate, and thus causing abnormal screen switching.

Summary of the invention

The present application provides a display method and terminal device of a foldable terminal, which are helpful to avoid the problem of abnormal screen display switching.

In a first aspect, the present application provides a display method for a foldable terminal, the method being applied to the foldable terminal, the foldable terminal comprising a foldable screen, the foldable screen comprising a touch electrode structure for touch detection, the touch electrode structure comprising a plurality of capacitor structures arranged in an array, the foldable screen comprising a foldable area, the foldable screen being folded or unfolded through the foldable area. The method comprises: obtaining a first capacitance value corresponding to at least one capacitor structure in the foldable area; and determining a display area of the foldable terminal according to the first capacitance value.

Among them, each capacitor structure in the at least one capacitor structure corresponds to a first capacitance value, so the foldable terminal obtains at least one first capacitance value of the foldable area, and the at least one capacitor structure corresponds to the at least one first capacitance value one by one.

The folding screen of the present application includes a capacitive touch panel (TP), the capacitive touch panel includes a touch chip (TP integrated circuit, TPIC), and the touch chip includes a touch electrode structure for touch detection. The touch electrode structure includes a plurality of capacitor structures arranged in an array, and each capacitor structure corresponds to a capacitance value.

When the foldable screen switches from the folded posture to the unfolded posture, or from the unfolded posture to the folded posture, the deformation of the foldable screen will cause the capacitance value of the foldable area to change. When the foldable screen switches from the folded posture to the unfolded posture, the capacitance value of the foldable area will gradually increase; when the foldable screen switches from the unfolded posture to the folded posture, the capacitance value of the foldable area will gradually decrease.

Based on the technical solution of the present application, the foldable terminal can detect the switching of the posture of the foldable screen according to the change of the first capacitance value, and then determine the display area of the foldable terminal according to the switching of the posture of the foldable screen. This method is simple to implement, and the foldable terminal does not need to add additional devices (for example, magnets, Hall components) for opening and closing detection, which is conducive to reducing the space occupied by the foldable terminal, and is conducive to avoiding the problem of abnormal switching display area caused by inaccurate opening and closing detection, thereby improving the user experience.

Among them, for a foldable terminal that folds inward, the folding screen is the inner screen of the foldable terminal, and the foldable terminal also includes an outer screen. The display area of the foldable terminal is the inner screen or the outer screen.

For a foldable terminal that folds outward, the folding screen includes a first screen and a second screen after being folded, and the display area of the foldable terminal is the full screen of the folding screen, or the display area is the first screen/second screen of the folding screen.

In combination with the first aspect, in some implementations of the first aspect, the folding method of the foldable terminal is inward folding, the folding screen is the inner screen of the foldable terminal, and the foldable terminal also includes an outer screen, and the folding screen and the outer screen are located on two opposite sides of the main body of the foldable terminal.

In combination with the first aspect, in certain implementations of the first aspect, the display area of the foldable terminal is determined according to the first capacitance value, including: detecting that the folding screen switches from a folded posture to an unfolded posture; if the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is greater than or equal to a first threshold, determining that the display area is an inner screen; if the first capacitance value corresponding to any one of the at least one capacitance structure is less than the first threshold, determining that the display area is an outer screen.

In the present application, the folding mode of the foldable terminal is inward folding, and the display area of the foldable screen in the folded posture is the external screen. When the foldable terminal detects that the foldable screen switches from the folded posture to the unfolded posture, the first capacitance value corresponding to each capacitor structure is compared with the first threshold. The first capacitance value corresponding to each capacitor structure changes dynamically during the process of switching the foldable screen from the folded posture to the unfolded posture, and the change trend is consistent. Only when the first capacitance value corresponding to each capacitor structure is greater than or equal to the first threshold, the foldable terminal determines that the display area is the inner screen, that is, the external screen display interface is switched to the inner screen display interface. As long as the first capacitance value corresponding to any one of the capacitor structures is less than the first threshold, the foldable terminal determines that the display area is the external screen, that is, the external screen display interface continues to be maintained without switching the screen display. In this way, it is conducive to improving the accuracy of screen display switching.

In combination with the first aspect, in certain implementations of the first aspect, determining the display area of the foldable terminal based on the first capacitance value also includes: detecting that the folding screen switches from an unfolded posture to a folded posture; if the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is less than or equal to a second threshold, determining that the display area is an external screen; if the first capacitance value corresponding to any one of the at least one capacitance structure is greater than the second threshold, determining that the display area is an internal screen.

In the present application, the folding mode of the foldable terminal is inward folding, and the display area of the foldable screen in the unfolded posture is the inner screen. When the foldable terminal detects that the foldable screen switches from the unfolded posture to the folded posture, the first capacitance value corresponding to each capacitor structure is compared with the second threshold. The first capacitance value corresponding to each capacitor structure changes dynamically during the process of switching the foldable screen from the unfolded posture to the folded posture, and the change trend is consistent. Only when the first capacitance value corresponding to each capacitor structure is less than or equal to the second threshold, the foldable terminal determines that the display area is the outer screen, that is, the inner screen display interface is switched to the outer screen display interface. As long as the first capacitance value corresponding to any one of the capacitor structures is greater than the second threshold, the foldable terminal determines that the display area is the inner screen, that is, the inner screen display interface continues to be maintained without switching the screen display. In this way, it is conducive to improving the accuracy of screen display switching.

In combination with the first aspect, in some implementations of the first aspect, the first threshold is greater than the second threshold.

In the present application, the first threshold is greater than the second threshold, so that space is reserved between the first threshold and the second threshold to allow the folding screen to shake. This helps to reduce the problem of frequent switching of display areas due to screen shaking and improve the user experience.

In combination with the first aspect, in some implementations of the first aspect, the folding screen is folded outward, and the folding screen includes a first screen and a second screen after being folded.

In combination with the first aspect, in certain implementations of the first aspect, the display area of the foldable terminal is determined according to the first capacitance value, including: detecting that the folding screen switches from a folded posture to an unfolded posture; if the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is greater than or equal to a third threshold, determining that the display area is the full screen of the foldable screen; if the first capacitance value corresponding to any one of the at least one capacitance structure is less than the third threshold, determining that the display area is the first screen or the second screen.

In the present application, the folding mode of the foldable terminal is outward folding, and the foldable screen includes a first screen and a second screen after being folded. The display area of the foldable terminal in the folded posture is the first screen/second screen. When the foldable terminal detects that the foldable screen switches from the folded posture to the unfolded posture, the first capacitance value corresponding to each capacitor structure is compared with the third threshold. The first capacitance value corresponding to each capacitor structure changes dynamically during the process of switching the foldable screen from the folded posture to the unfolded posture, and the change trend is consistent. Only when the first capacitance value corresponding to each capacitor structure is greater than or equal to the third threshold, the foldable terminal determines that the display area is the full screen of the foldable screen, that is, the first screen/second screen display interface is switched to the full screen display interface of the foldable screen. As long as the first capacitance value corresponding to any one of the capacitor structures is less than the point threshold, the foldable terminal determines that the display area is the first screen/second screen, that is, the first screen/second screen display interface continues to be maintained without screen display switching. In this way, it is conducive to improving the accuracy of screen display switching.

In combination with the first aspect, in certain implementations of the first aspect, determining the display area of the foldable terminal based on the first capacitance value also includes: detecting that the folding screen switches from an unfolded posture to a folded posture; if the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is less than or equal to a fourth threshold, determining that the display area is the first screen or the second screen; if the first capacitance value corresponding to any one of the at least one capacitance structure is greater than the fourth threshold, determining that the display area is the full screen of the foldable screen.

In the present application, the folding mode of the foldable terminal is outward folding, and the foldable screen includes a first screen and a second screen after being folded. The display area of the foldable terminal in the unfolded posture is the full screen of the foldable screen. When the foldable terminal detects that the foldable screen switches from the unfolded posture to the folded posture, the first capacitance value corresponding to each capacitor structure is compared with the fourth threshold. The first capacitance value corresponding to each capacitor structure changes dynamically during the process of switching the foldable screen from the unfolded posture to the folded posture, and the change trend is consistent. Only when the first capacitance value corresponding to each capacitor structure is less than or equal to the fourth threshold, the foldable terminal determines that the display area is the first screen or the second screen, that is, the full-screen display interface of the foldable screen is switched to the first screen or the second screen display interface of the foldable screen. As long as the first capacitance value corresponding to any one of the capacitor structures is greater than the fourth threshold, the foldable terminal determines that the display area is the full screen of the foldable screen, that is, the full-screen display interface of the foldable screen is continued to be maintained without screen display switching. In this way, it is conducive to improving the accuracy of screen display switching.

In combination with the first aspect, in some implementations of the first aspect, the third threshold is greater than the fourth threshold.

In the present application, the third threshold is greater than the fourth threshold, so that space is reserved between the third threshold and the fourth threshold to allow the folding screen to shake. This helps reduce the problem of frequent switching of display areas due to screen shaking and improves the user experience.

In combination with the first aspect, in certain implementations of the first aspect, detecting that the folding screen switches from a folded posture to an unfolded posture includes: when it is detected that the first capacitance value corresponding to each capacitor structure changes from small to large, determining that the folding screen switches from a folded posture to an unfolded posture; or, when it is detected according to the acceleration sensor that the angle of the folding screen changes from small to large, determining that the folding screen switches from a folded posture to an unfolded posture.

In the present application, the foldable terminal can detect the opening and closing of the foldable screen according to the change of the first capacitance value corresponding to each capacitor structure, or the change of the angle of the foldable screen, and determine that the foldable screen is switching from the folded posture to the unfolded posture. In this way, the foldable terminal does not need to add additional devices (for example, magnets, Hall components) for opening and closing detection, which is conducive to reducing the space occupied by the foldable terminal and improving the accuracy of the opening and closing detection results.

In combination with the first aspect, in certain implementations of the first aspect, detecting that the folding screen switches from the unfolded posture to the folded posture includes: when it is detected that the first capacitance value corresponding to each capacitor structure changes from large to small, determining that the folding screen switches from the unfolded posture to the folded posture; or, when it is detected according to the acceleration sensor that the angle of the folding screen changes from large to small, determining that the folding screen switches from the unfolded posture to the folded posture.

In the present application, the foldable terminal can detect the opening and closing of the foldable screen according to the change of the first capacitance value corresponding to each capacitor structure, or the change of the angle of the foldable screen, and determine that the foldable screen is switching from the unfolded posture to the folded posture. In this way, the foldable terminal does not need to add additional devices (for example, magnets, Hall components) for opening and closing detection, which is conducive to reducing the space occupied by the foldable terminal and improving the accuracy of the opening and closing detection results.

In combination with the first aspect, in some implementations of the first aspect, before obtaining the first capacitance value corresponding to at least one capacitance structure in the foldable area, the method further includes: when the screen of the foldable terminal is lit, obtaining the second capacitance value corresponding to the at least one capacitance structure in the foldable area; and determining whether the second capacitance value corresponding to each capacitance structure in the at least one capacitance structure is within a preset threshold range. Obtaining the first capacitance value corresponding to at least one capacitance structure in the foldable area includes: obtaining the first capacitance value when the second capacitance value corresponding to each capacitance structure is within a preset threshold range.

In the present application, if the second capacitance value corresponding to each capacitance structure in the at least one capacitance structure shown is within the preset threshold range, it means that the second capacitance value corresponding to each capacitance structure is normal. In this way, the first capacitance value corresponding to the at least one capacitance structure shown obtained when the second capacitance value corresponding to each capacitance structure in the at least one capacitance structure shown is within the preset threshold range is more reliable, which is beneficial to improving the success rate of opening and closing detection through the first capacitance value, thereby improving the accuracy of screen display switching.

In combination with the first aspect, in some implementations of the first aspect, the touch electrode structure includes a plurality of first electrodes arranged in a horizontal direction and a plurality of second electrodes arranged in a vertical direction, and the first electrodes and the second electrodes cross each other to form a capacitor structure.

In a second aspect, the present application provides a terminal device, which may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may be a mobile phone, a personal computer (PC), a smart TV, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

The terminal device comprises: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the terminal device executes the method of the first aspect.

In a third aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the method of the first aspect is implemented.

In a fourth aspect, the present application provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the method of the first aspect.

In a fifth aspect, the present application provides a chip, the chip comprising a processor, the processor being used to call a computer program in a memory to execute the method described in the first aspect.

It should be understood that the second to fifth aspects of the present application correspond to the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a terminal device applicable to an embodiment of the present application;

FIG2 is a schematic diagram of a foldable mobile phone provided in an embodiment of the present application;

FIG3 is a schematic diagram of another foldable mobile phone provided in an embodiment of the present application;

FIG4 is a schematic flow chart of a display method of a foldable terminal provided in an embodiment of the present application;

FIG5 is a schematic diagram of a touch electrode structure provided in an embodiment of the present application;

FIG6 is a diagram showing a relationship between a capacitance value and a screen display strategy provided in an embodiment of the present application;

FIG7 is a diagram showing another relationship between capacitance value and screen display strategy provided in an embodiment of the present application;

FIG8 is a diagram showing the relationship between an angle of a folding screen and a screen display strategy provided by an embodiment of the present application;

FIG. 9 is a diagram showing the relationship between the angle of another folding screen and the screen display strategy provided in an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

In order to clearly describe the technical solutions of the embodiments of the present application, some of the terms involved in the embodiments of the present application are briefly introduced below:

In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects, and do not limit their order. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

It should be noted that, in this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

In addition, "at least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character "/" generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the display interface provided in the embodiment of the present application is only an example, and the display interface can also include more or less content.

FIG. 1 is a schematic diagram of the structure of a terminal device applicable to an embodiment of the present application. As shown in FIG. 1 , the terminal device 100 may include: a processor 110, an external memory interface 120, an internal memory 121, a USB interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc. It can be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the terminal device 100. In other embodiments of the present application, the terminal device 100 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, for example: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, a display processing unit (displayprocess unit, DPU), and/or a neural-network processing unit (neural-network processing unit, NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors. In some embodiments, the terminal device 100 may also include one or more processors 110. Among them, the processor may be the nerve center and command center of the terminal device 100. The processor may generate an operation control signal according to the instruction opcode and the timing signal to complete the control of fetching and executing instructions. A memory may also be set in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may save instructions or data used or recycled by the processor 110. If the processor 110 needs to use the instruction or data again, it can be directly called from the memory. This avoids repeated accesses, reduces the waiting time of the processor 110 , and thus improves the efficiency of the terminal device 100 .

In some embodiments, the processor 110 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (SIM) interface, and/or a USB interface, etc. Among them, the USB interface 130 is an interface that complies with the USB standard specification, and specifically can be a Mini USB interface, a MicroUSB interface, a USB Type C interface, etc. The USB interface 130 can be used to connect a charger to charge the terminal device 100, and can also be used to transmit data between the terminal device 100 and a peripheral device. It can also be used to connect headphones and play audio through the headphones.

It is understandable that the interface connection relationship between the modules illustrated in the embodiment of the present application is for schematic illustration and does not constitute a structural limitation on the terminal device 100. In other embodiments of the present application, the terminal device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

The wireless communication function of the terminal device 100 can be implemented by antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, modulation and demodulation processor and baseband processor. Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the terminal device 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of the antenna. For example, antenna 1 can be reused as a diversity antenna of a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

The mobile communication module 150 can provide solutions for wireless communications including 2G/3G/4G/5G applied to the terminal device 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a low noise amplifier, etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the same device as at least some of the modules of the processor 110.

The wireless communication module 160 can provide wireless communication solutions including wireless local area networks (WLAN), Bluetooth, global navigation satellite system (GNSS), frequency modulation (FM), NFC, infrared technology (IR), etc. applied to the terminal device 100. 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 the antenna 2, modulates the frequency of the electromagnetic wave signal and filters it, and sends the processed signal to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, modulate the frequency of it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

In some embodiments, the antenna 1 of the terminal device 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the terminal device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include GSM, GPRS, CDMA, WCDMA, TD-SCDMA, LTE, GNSS, WLAN, NFC, FM, and/or IR technology.

The terminal device 100 can realize the display function through the GPU, the display screen 194 and the application processor. The application processor may include an NPU and/or a DPU. The GPU is a microprocessor for image processing, which is connected to the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs, which execute instructions to generate or change display information. The DPU is also called a display subsystem (DSS). The DPU is used to adjust the color of the display screen 194. The DPU can adjust the color of the display screen through a color three-dimensional (3D) lookup table (LUT). The DPU can also perform processing such as scaling, noise reduction, contrast enhancement, backlight brightness management, HDR processing, and display parameter Gamma adjustment on the picture.

The display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed or a quantum dot light-emitting diode (QLED). In some embodiments, the terminal device 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

The terminal device 100 can realize the shooting function through an ISP, one or more cameras 193, a video codec, a GPU, one or more display screens 194, and an application processor.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. For example, data files such as music, photos, and videos are stored in the external memory card.

The internal memory 121 can be used to store one or more computer programs, which include instructions. The processor 110 can enable the terminal device 100 to perform various functional applications and data processing by running the above instructions stored in the internal memory 121. The internal memory 121 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system; the program storage area can also store one or more applications (such as a gallery, contacts, etc.). The data storage area can store data (such as photos, contacts, etc.) created during the use of the terminal device 100. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. In some embodiments, the processor 110 can enable the terminal device 100 to perform various functional applications and data processing by running instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor 110.

The terminal device 100 can implement audio functions such as music playing and recording through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor.

The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It should be noted that in the embodiment of the present application, the terminal device includes a folding screen, which is called a foldable terminal. The foldable terminal can be folded or unfolded along the foldable area. The foldable terminal includes a folding posture and an unfolding posture. When the foldable terminal is in the unfolded posture, the folding screen can be used for a full-screen display interface. After the terminal device is folded, the folding screen presents multiple display areas, each display area is called a screen. For example, the folding screen is folded along the foldable area to form a first screen and a second screen.

The following takes a foldable mobile phone as an example of the foldable terminal to illustrate the display area presented by the foldable terminal in different postures.

FIG2 is a schematic diagram of a folding mobile phone provided in an embodiment of the present application. As shown in a of FIG2, the folding mobile phone 200 is in an unfolded posture. The folding mobile phone 200 includes an inner screen 20 and an outer screen (see the outer screen 21 shown in b of FIG2), and the inner screen 20 is a folding screen. The folding mobile phone 200 includes a hinge. The structure of the folding mobile phone 200 includes a hinge. For example, a flexible hinge can achieve flexible bending to ensure that the folding screen maintains the integrity of the screen in the open and closed state. As shown in FIG2, in the embodiment of the present application, the area of the folding screen corresponding to the hinge is referred to as the hinge area. The hinge area can be folded (bent) based on the hinge, so the hinge area can also be referred to as a foldable area.

The folding method of the foldable mobile phone 200 is inward folding (folding inward, after being completely folded, the first screen is opposite to the second screen).

When the foldable phone 200 is in the unfolded posture, the foldable phone 200 can display the interface on the inner screen 20 in full screen, that is, the display area of the foldable phone 200 is the full screen of the inner screen 20. When the foldable phone 200 is currently in the screen-on state, the foldable phone 200 displays the interface on the full screen of the inner screen 20 (for example, a in FIG. 2 displays the lock screen interface); when the foldable phone 200 is currently in the screen-off state, if the foldable phone 200 receives a notification message at this time, the inner screen 20 of the foldable phone 200 is awakened and the notification message is displayed on the inner screen 20.

When the foldable phone 200 is folded inward along the foldable area, the foldable phone 200 presents the posture shown in b in FIG. 2 . It can be seen that the foldable phone 200 also includes an outer screen 21. During the folding process, the foldable phone 200 performs an opening and closing detection to determine the display area of the foldable phone 200. During this process, the display area switches between the inner screen 20 and the outer screen 21.

When the foldable phone 200 is completely folded in a folded posture, as shown in c in FIG. 2 , the inner screen 20 is folded and invisible and cannot be used to display the interface. The outer screen 21 is a display area and can be used to display the interface. When the foldable phone 200 is currently in the screen-on state, the foldable phone 200 displays the interface on the outer screen 21 (for example, c in FIG. 2 displays the lock screen interface); when the foldable phone 200 is currently in the screen-off state, if the foldable phone 200 receives a notification message at this time, the outer screen 21 of the foldable phone 200 is awakened and the notification message is displayed on the outer screen 21.

FIG3 is a schematic diagram of another folding mobile phone provided in an embodiment of the present application. As shown in a of FIG3, the folding mobile phone 300 is in an unfolded posture, and the folding mobile phone 300 includes a folding screen 30, and the folding screen 30 may include a first screen 301 and a second screen 302 after being folded. The folding method of the folding mobile phone 300 is outward folding (folding outward, and after being completely folded, the first screen 301 and the second screen 302 are located on the opposite sides of the main body of the folding mobile phone 300).

When the foldable phone 300 is folded inward along the foldable area, the foldable phone 300 may present a posture as shown in b in FIG. 3 . During the folding process, the foldable phone 300 performs an opening and closing detection to determine whether the display area is the full screen of the foldable screen 30, or the first screen 301/second screen 302. The display area shown in b in FIG. 3 is the first screen 301.

When the foldable phone 300 is completely folded in a folded posture, as shown in c in FIG3 , the display area of the foldable terminal is the first screen 301. Exemplarily, when the user turns on the screen or receives a message, a lock screen interface or a message notification interface is displayed on the first screen 301.

Currently, terminal devices can use Hall devices and magnets to perform opening and closing detection on folding screens. However, this solution requires additional devices and occupies architectural space. When there are other magnetic devices in the space, it may interfere with the magnetism of the magnets on the terminal device, making the opening and closing detection inaccurate, and thus causing abnormal screen switching.

In view of this, an embodiment of the present application provides a display method for a foldable terminal, which detects the opening and closing of a foldable screen based on the capacitance value of the foldable area. This method does not require the addition of additional devices, such as Hall devices and magnets, and can free up the architectural space of the terminal device, which is conducive to avoiding abnormal screen display switching caused by magnetic interference.

FIG4 is a schematic flow chart of a display method 400 of a foldable terminal provided in an embodiment of the present application. The method 400 is applied to a foldable terminal, the foldable terminal includes a foldable screen, the foldable screen includes a touch electrode structure for touch detection, the touch electrode structure includes a plurality of capacitor structures arranged in an array. The foldable screen includes a foldable area, and the foldable screen is folded or unfolded through the foldable area.

The foldable terminal of the embodiment of the present application may be, for example, the foldable mobile phone 200 shown in Figure 2, or may be, for example, the foldable mobile phone 300 shown in Figure 3. The foldable terminal may have a structure as shown in Figure 1, but the embodiment of the present application is not limited thereto.

The method 400 includes S401 and S402, and the specific steps are as follows:

S401, obtaining a first capacitance value corresponding to at least one capacitance structure in a foldable area.

It should be understood that each capacitor structure in at least one capacitor structure corresponds to a first capacitance value. The first capacitance value corresponding to at least one capacitor structure can be understood as the first capacitance value corresponding to each capacitor structure in at least one capacitor structure, the number of first capacitance values is at least one, and the at least one capacitor structure corresponds to the at least one first capacitance value one-to-one.

The folding screen of the embodiment of the present application includes a touch screen (TP), which can also be called a touch screen or a touch panel. It is an inductive liquid crystal display device that can receive input signals such as contacts. A touch screen is an interactive input device. A user can control the operation of a computer by touching a certain position of the touch screen with a finger or a light pen. It has the characteristics of simple operation and flexible use.

Exemplarily, the touch screen may be a capacitive touch screen, the capacitive touch screen includes a touch chip, the touch chip includes a touch electrode structure for touch detection. The touch electrode structure includes a plurality of first electrodes (which may be referred to as horizontal electrodes or driving electrodes) arranged in a horizontally spaced manner and a plurality of second electrodes (which may be referred to as vertical electrodes or sensing electrodes) arranged in a vertically spaced manner, the first electrodes and the second electrodes intersect each other to form a capacitive structure, and the capacitive structure includes the position of the intersection of the first electrodes and the second electrodes.

Currently, most touch chips support self-capacitance mode and mutual capacitance mode. In the self-capacitance mode, indium tin oxide (ITO) is used to make horizontal and vertical electrode arrays on the glass surface, and each of them forms a capacitor with the ground. This capacitor is usually self-capacitance, that is, the capacitance of the electrode to the ground, but self-capacitance cannot achieve true multi-finger touch. In the mutual capacitance mode, ITO is used to make horizontal and vertical electrodes on the glass surface. The difference from self-capacitance is that a capacitor will be formed where the two groups of electrodes intersect, that is, the two groups of electrodes constitute the two levels of the capacitor. When the mobile phone touches the capacitive touch screen, it affects the coupling between the two electrodes near the touch point, thereby equivalently changing the capacitance between the two electrodes.

It should be understood that the first capacitance value and the second capacitance value in the embodiment of the present application refer to the mutual capacitance value. The mutual capacitance will be taken as an example for description below.

Taking the touch chip having X horizontal electrodes and Y vertical electrodes as an example, the area of the touch screen covered by the X horizontal electrodes and the Y vertical electrodes is the touch area (TP area) of the folding screen. When detecting the size of the mutual capacitance, the X horizontal electrodes send out an excitation signal in turn, and the Y vertical electrodes receive the signal at the same time, so that the capacitance value of the position of all intersections of the X horizontal electrodes and the Y vertical electrodes can be obtained, that is, the capacitance value of the two-dimensional plane of the entire TP area. According to the two-dimensional capacitance change data of the capacitive touch screen, the coordinates of each touch point can be calculated. Therefore, even if there are multiple touch points on the capacitive touch screen, the true coordinates of each touch point can be calculated.

The horizontal electrodes and the longitudinal electrodes can be respectively arranged on two bottom plates, and the distance between the two bottom plates is d. It should be understood that the size of the capacitance value is inversely proportional to the distance d between the two bottom plates. In the process of switching the folding screen from the folding posture to the unfolding posture, the deformation of the semi-solid bonding glue on the screen causes the distance d between the two bottom plates in the foldable area to gradually decrease, so the capacitance value of the foldable area will gradually increase. Conversely, in the process of switching the folding screen from the unfolding posture to the folding posture, the deformation of the semi-solid bonding glue on the screen causes the distance d between the two bottom plates in the foldable area to gradually increase, so the capacitance value of the foldable area will gradually decrease. Based on this principle, the foldable terminal can detect the switching of the posture of the folding screen, that is, detect whether the folding screen is switched from the folding posture to the unfolding posture, or from the unfolding posture to the folding posture.

The image shapes of the horizontal electrodes and the vertical electrodes can be various, such as stripes, diamonds, triangles. FIG5 below takes a stripe shape as an example to show a schematic diagram of a touch electrode structure.

Exemplarily, the size of the folding screen of the foldable terminal shown in FIG5 is 152 mm×132 mm, and the touch electrode structure of the folding screen includes 38 horizontal electrodes with image shapes of bars and arranged at intervals in the horizontal direction and 33 vertical electrodes with image shapes of bars and arranged at intervals in the vertical direction (longitudinal direction). The 38 horizontal electrodes and the 33 vertical electrodes cross each other to form 38×33 capacitor structures, and each capacitor structure includes the position of the intersection of a horizontal electrode and a vertical electrode, and the position of each intersection corresponds to a first capacitance value, that is, each capacitor structure corresponds to a first capacitance value. According to the size of the folding screen, the number of horizontal electrodes, and the number of vertical electrodes, it can be known that the distance between two adjacent horizontal electrodes is 4 mm, and the distance between two adjacent vertical electrodes is 4 mm.

The foldable terminal can select an area containing the intersection positions of any combination of horizontal electrodes and the 17th column (an intermediate number from 1 to 33) of vertical electrodes in the foldable area as the target area, and obtain a first capacitance value corresponding to the position of at least one intersection point (i.e., at least one capacitance structure) in the target area.

Exemplarily, as shown in a of FIG5 , the foldable terminal selects the area including the positions of the intersections of the horizontal electrodes in the 1st to 38th rows and the vertical electrodes in the 17th column as the target area 01. The target area 01 includes the positions of 38 intersections of 38 horizontal electrodes and 1 vertical electrode, and the position of each intersection corresponds to a capacitance value. Therefore, the foldable terminal can obtain 38 first capacitance values in the target area 01.

Exemplarily, as shown in b in FIG5 , the foldable terminal selects the area including the positions of the intersections of the horizontal electrodes in the 1st to 19th rows and the vertical electrodes in the 17th column as the target area 02. The target area 02 includes the positions of 19 intersections of 19 horizontal electrodes and 1 vertical electrode, and the position of each intersection corresponds to a capacitance value. Therefore, the foldable terminal can obtain 19 first capacitance values in the target area 02.

Exemplarily, as shown in c in FIG5 , the foldable terminal selects the region where the intersections of the horizontal electrodes in the 1st to 2nd rows and the vertical electrodes in the 17th column, and the region where the intersections of the horizontal electrodes in the 37th to 38th rows and the vertical electrodes in the 17th column are located as the target region 03. The target region 03 includes the positions of the four intersections of the four horizontal electrodes and one vertical electrode, and the position of each intersection corresponds to a capacitance value, so the foldable terminal can obtain four first capacitance values in the target region 03.

The division of the touch screen is determined by comprehensively considering the screen size, screen processing technology, and the number of electrodes of the touch chip used. When the size of the folding screen of the foldable terminal is 152mm×132mm, the touch chip used in the touch screen can also contain 76 horizontal electrodes and 65 vertical electrodes. The 76 horizontal electrodes and 65 vertical electrodes cross each other to form a 76×65 capacitor structure.

Similar to the above description of Figure 5, exemplarily, the foldable terminal can determine the area containing the intersection of any combination of horizontal electrodes and the middle column (i.e., the 33rd column, 33 is an intermediate number between 1 and 65) of the longitudinal electrodes in the foldable area as the target area.

Alternatively, because the 76 horizontal line drive circuits and 65 vertical electrodes divide the touch screen more finely, the foldable area of the foldable screen may contain more columns of vertical electrodes, for example, including the 32nd, 33rd, and 34th columns of vertical electrodes. Therefore, the foldable terminal can also determine the area containing the intersection of any combination of horizontal electrodes and the 32nd, 33rd, and 34th columns of vertical electrodes in the foldable area as the target area. The embodiment of the present application does not limit the selection of the target area, but the target area must be limited to the foldable area.

In the process of actually determining the target area, the foldable terminal can obtain the change in the capacitance value of the intersection of all driving electrodes and sensing electrodes in the foldable area during the process of the folding screen changing from a folded posture to an unfolded posture (or the folding screen changing from an unfolded posture to a folded posture), and determine the change range of the capacitance value of the foldable terminal, for example [C, D], where C is (or is approximately) the capacitance value corresponding to the position of the intersection of each horizontal electrode and each longitudinal electrode in the folded posture, and D is (or is approximately) the capacitance value corresponding to the position of the intersection of each horizontal electrode and each longitudinal electrode in the unfolded posture.

The foldable terminal can select the area formed by the positions of the intersections of the first M horizontal electrodes and the vertical electrodes with the largest capacitance value changes in the foldable area as the target area, where M is greater than or equal to 2. The greater the capacitance value change, the larger the capacitance value change interval [C, D] is. The positions of the intersections of the horizontal electrodes and the vertical electrodes with large changes are more sensitive to changes in the posture of the foldable screen, which is conducive to setting a more appropriate threshold in the change interval [C, D] for screen display switching, thereby improving the stability and accuracy of screen display switching.

S402: Determine a display area of the foldable terminal according to the first capacitance value.

It should be understood that the foldable terminal selects a first capacitance value corresponding to at least one capacitance structure within the foldable area. During the folding or unfolding of the folding screen, the first capacitance value changes in real time. Therefore, the foldable terminal can detect the opening and closing of the folding screen according to the changed capacitance value, thereby determining the display area of the terminal device.

Based on the technical solution of the present application, the foldable terminal does not need to add additional devices (for example, magnets, Hall components), which is conducive to reducing the space occupied by the foldable terminal. As the posture of the folding screen changes, the first capacitance value corresponding to at least one capacitance structure of the horizontal electrode and the vertical electrode in the foldable area also changes accordingly. Therefore, the foldable terminal can detect the opening and closing of the folding screen according to the real-time changing first capacitance value, and then determine the display area of the foldable terminal. This method is simple to implement and is conducive to avoiding abnormal problems in switching display areas caused by inaccurate opening and closing detection, thereby improving the user experience.

As an optional embodiment, before S401, method 400 further includes: when the screen of the terminal device is turned on, obtaining a second capacitance value corresponding to the at least one capacitance structure in the foldable area; and determining whether the second capacitance value corresponding to each capacitance structure in the at least one capacitance structure is abnormal. S401 includes: when the second capacitance value corresponding to each capacitance structure is normal, obtaining the first capacitance value.

In an embodiment of the present application, the at least one capacitor structure includes the positions of the intersections of the transverse electrodes and the longitudinal electrodes included in the target area described above, and the position of each intersection corresponds to a second capacitance value, so each capacitor structure corresponds to a second capacitance value.

After the foldable terminal described above determines the target area, the foldable terminal first obtains the second capacitance value corresponding to the at least one capacitance structure in the target area each time the screen is turned on (including power on), and detects whether the second capacitance value corresponding to each capacitance structure is abnormal. In the event that there is an abnormality in the second capacitance value corresponding to any one of the capacitance structures, the foldable terminal prompts the user to repair the screen and use other methods to detect the opening and closing of the foldable screen. In the event that there is no abnormality in the second capacitance value corresponding to each capacitance structure, the foldable terminal executes the display method 400 of the foldable terminal of the present application, which is conducive to improving the success rate of opening and closing detection through the first capacitance value, thereby improving the accuracy of screen display switching.

When the foldable terminal detects whether the second capacitance value corresponding to each capacitance structure is abnormal, it determines whether the second capacitance value corresponding to each capacitance structure is within the preset threshold range [A, B]. If each second capacitance value is within the preset threshold range [A, B], the foldable terminal determines that the second capacitance value corresponding to each capacitance structure is normal. If the second capacitance value corresponding to any capacitance structure is not within the preset threshold range [A, B], the foldable terminal determines that there is an abnormality in the screen. Among them, A and B can be determined based on big data analysis of the capacitance values of a large number of normal screens.

The specific implementation of determining the display area of the foldable terminal according to the first capacitance value is introduced below.

Possible scenario 1: The folding mode of the folding screen is inward folding, the folding screen is the inner screen of the foldable terminal, and the foldable terminal also includes an outer screen, and the inner screen and the outer screen are located on two opposite sides of the main body of the foldable terminal. When the posture of the folding screen changes, the foldable terminal switches the display interface between the inner screen and the outer screen, that is, the display area of the foldable terminal is the inner screen or the outer screen.

A possible scenario 2: The folding mode of the folding screen is outward folding. When the folding mode is outward folding, the foldable terminal may not be configured with an external screen. When the posture of the folding screen changes, the foldable terminal switches the display interface between the full screen of the folding screen and the partial screen of the folding screen (such as the first screen 301 or the second screen 302 in FIG. 3), that is, the display area of the foldable terminal is the full screen of the folding screen or the partial screen of the folding screen.

First, taking scenario 1 as an example, the specific implementation of the foldable terminal determining the display area of the foldable terminal according to the first capacitance value is introduced below.

Assumption 1: The current posture of the foldable screen is the folded posture, and the user expects to switch the foldable screen from the folded posture to the unfolded posture. When the foldable screen is in the folded posture, the outer screen of the foldable terminal is used to display the interface.

Figure 6 is a relationship diagram between a capacitance value and a screen display strategy provided in an embodiment of the present application. Referring to Figure 6, the horizontal axis represents the capacitance value, and the vertical axis represents the screen display strategy, wherein an output of "0" indicates that an external screen display interface is used, and an output of "1" indicates that an internal screen (full screen of a folding screen) display interface is used. In the folded posture, the first capacitance value corresponding to each capacitor structure in the target area is C, or approximately C. In the process of the folding screen being unfolded, the first capacitance value corresponding to each capacitor structure in the target area gradually increases from C to D. In the unfolded posture, the first capacitance value corresponding to each capacitor structure in the target area is D or approximately D.

The foldable terminal can detect the opening and closing of the folding screen based on the change of the first capacitance value corresponding to each capacitor structure in the target area.

In a possible implementation, when the foldable terminal detects that the first capacitance value corresponding to each capacitance structure in the target area changes from small to large, it can determine that the folding screen is switching from a folded posture to an unfolded posture.

In another possible implementation, the foldable terminal further includes an acceleration sensor, and the foldable terminal can detect the change of the angle of the foldable screen according to the acceleration sensor. When detecting that the angle of the foldable screen changes from small to large, the foldable terminal can determine that the foldable screen is switching from a folded posture to an unfolded posture.

When it is determined that the folding screen is switching from a folded posture to an unfolded posture, if the first capacitance value corresponding to any one of the at least one capacitor structure is less than the first threshold, the foldable terminal determines that the display area is the external screen, that is, the interface continues to be displayed by the external screen.

When it is determined that the folding screen is switching from a folded posture to an unfolded posture, if the first capacitance value corresponding to each capacitor structure in the at least one capacitor structure is greater than or equal to the first threshold, the foldable terminal determines that the display area is the inner screen (the full screen of the folding screen), that is, the external screen display interface is switched to the full-screen display interface of the folding screen.

Assumption 2: The current posture of the foldable screen is the unfolded posture, and the user expects to switch the foldable screen from the unfolded posture to the folded posture. When the foldable screen is in the unfolded posture, the inner screen of the foldable terminal (the full screen of the foldable screen) is used to display the interface.

Figure 7 is a relationship diagram between another capacitance value and screen display strategy provided by an embodiment of the present application. Referring to Figure 7, the horizontal axis represents the capacitance value, and the vertical axis represents the screen display strategy, wherein the output of "0" indicates that the external screen display interface is used, and the output of "1" indicates that the internal screen (full screen of the folding screen) display interface is used. In the unfolded posture, the first capacitance value corresponding to each capacitor structure in the target area is D, or approximately D. In the process of the folding screen being folded, the first capacitance value corresponding to each capacitor structure in the target area gradually decreases from D to C. In the folded posture, the first capacitance value corresponding to each capacitor structure in the target area is C, or approximately C.

The foldable terminal can detect the opening and closing of the folding screen based on the change of the first capacitance value corresponding to each capacitor structure in the target area.

Similar to the above description of hypothesis one, in one possible implementation, when the foldable terminal detects that the first capacitance value corresponding to each capacitor structure in the target area changes from large to small, it can determine that the folding screen is switching from the unfolded posture to the folded posture.

In another possible implementation, when the foldable terminal detects, according to the acceleration sensor, that the angle of the foldable screen changes from large to small, the foldable terminal may determine that the foldable screen is switching from the unfolded posture to the folded posture.

When it is determined that the folding screen is switching from the unfolded posture to the folded posture, if the first capacitance value corresponding to any one of the at least one capacitor structures is greater than the second threshold, the foldable terminal determines that the display area is the inner screen, that is, the full-screen display interface of the folding screen continues, and the outer screen is still not used to display the interface.

When it is determined that the folding screen is switching from an unfolded posture to a folded posture, if the first capacitance value corresponding to each capacitor structure in the at least one capacitor structure is less than or equal to the second threshold, the foldable terminal determines that the display area is the external screen, that is, the full-screen display interface of the folding screen is switched to the external screen display interface.

In a possible implementation, the first threshold is equal to the second threshold. Exemplarily, the first threshold and the second threshold may be (C+D)/2.

In another possible implementation, the first threshold is greater than the second threshold. Exemplarily, the first threshold and the second threshold are symmetrical with (C+D)/2 as the symmetry point. Taking C=10 and D=30 as an example, (C+D)/2=20, the first threshold can be 20+5=25, and the second threshold can be 20-5=15; or, the first threshold can be 20+3=23, and the second threshold can be 20-3=17. Usually, (C+D)/2 corresponds to the intermediate state of folding or unfolding the folding screen (such as the angle of the folding screen is 90 degrees). In the intermediate state, the folding screen may shake. The shaking of the folding screen may cause the capacitance value of the target area to change, resulting in the problem of frequent switching of the screen display. In the embodiment of the present application, if the first threshold and the second threshold are symmetrical with (C+D)/2 as the symmetry point, the posture of the folding screen corresponding to the value with (C+D)/2 as the symmetry point is relatively stable, and space is reserved between the first threshold and the second threshold to allow the folding screen to shake. This is helpful in reducing the problem of frequent switching of display areas due to screen shaking and improving the user experience.

Taking scenario 2 as an example, the following describes a specific implementation of the foldable terminal determining the display area of the foldable terminal according to the first capacitance value.

Assumption 3: The current posture of the folding screen is the folding posture, and the user expects to switch the folding screen from the folding posture to the unfolding posture. When the folding screen is in the folding posture, the first screen or the second screen of the folding screen is used to display the interface.

Similar to Assumption 1 in Scenario 1, the foldable terminal can detect the opening and closing of the folding screen according to the change of the first capacitance value corresponding to each capacitor structure in the target area. The detection method is similar to the description in Assumption 1 and will not be repeated here.

When it is determined that the folding screen is switching from a folded posture to an unfolded posture, if the first capacitance value corresponding to each capacitor structure in the at least one capacitor structure is greater than or equal to the third threshold, the foldable terminal determines that the display area is the full screen of the folding screen, that is, the first screen or the second screen display interface is switched to the full screen display interface of the folding screen.

When it is determined that the folding screen is switching from a folded posture to an unfolded posture, if the first capacitance value corresponding to any capacitor structure is less than the third threshold, the foldable terminal determines that the display area is the first screen, that is, the interface continues to be displayed by the first screen.

Assumption 4: The current posture of the foldable screen is the unfolded posture, and the user expects to switch the foldable screen from the unfolded posture to the folded posture. When the foldable screen is in the unfolded posture, the foldable screen of the foldable terminal is used to display the interface in full screen.

Similar to Assumption 2 in Scenario 1, the foldable terminal can detect the opening and closing of the folding screen according to the change of the first capacitance value corresponding to each capacitor structure in the target area. The detection method is similar to the description in Assumption 2 and will not be repeated here.

When it is determined that the folding screen is switching from a folded posture to an unfolded posture, if the first capacitance value corresponding to any one of the at least one capacitor structures is greater than the fourth threshold, the foldable terminal determines that the display area is the full screen of the folding screen, that is, the full-screen display interface of the folding screen continues.

When it is determined that the folding screen is switching from a folded posture to an unfolded posture, if the first capacitance value corresponding to each capacitor structure in the at least one capacitor structure is less than or equal to the fourth threshold, the foldable terminal determines that the display area is the first screen or the second screen, that is, the full-screen display interface of the folding screen is switched to the first screen or the second screen display interface of the folding screen.

Similar to the relationship between the first threshold and the second threshold described in scenario one, the third threshold may be greater than or equal to the fourth threshold.

Exemplarily, the third threshold and the fourth threshold are symmetrically taken with (C+D)/2 as the symmetry point. Taking C=10 and D=30 as an example, (C+D)/2=20, the third threshold can be 20+5=25, and the fourth threshold can be 20-5=15; or, the third threshold can be 20+3=23, and the fourth threshold can be 20-3=17. Usually, (C+D)/2 corresponds to the intermediate state of the folding screen being folded or unfolded (such as the angle of the folding screen is 90 degrees). In the intermediate state, the folding screen may shake. The shaking of the folding screen may cause the capacitance value of the target area to change, resulting in the problem of frequent switching of the screen display. In the embodiment of the present application, if the third threshold and the fourth threshold are symmetrically taken with (C+D)/2 as the symmetry point, the posture of the folding screen corresponding to the value of (C+D)/2 as the symmetry point is relatively stable, and space is reserved between the third threshold and the fourth threshold to allow the folding screen to shake, which is conducive to reducing the problem of frequent switching of display areas due to screen shaking and improving the user experience.

In the embodiment of the present application, the foldable terminal obtains the first capacitance value corresponding to the at least one capacitance structure through the touch chip, and the touch chip can send the obtained first capacitance value corresponding to the at least one capacitance structure to the processor after analog-to-digital conversion to perform the operation of determining the display area of the foldable terminal. In other words, the first capacitance value corresponding to each capacitance value compared with the threshold in the embodiment of the present application is a capacitance value that has been digitized.

As described above, when the second capacitance value corresponding to each capacitance structure in the at least one capacitance structure of the target area obtained by the foldable terminal is normal, the foldable terminal executes the method 400 provided in the present application. However, when the second capacitance value corresponding to any one of the at least one capacitance structure is abnormal, if the first capacitance value corresponding to the at least one capacitance structure of the target area is obtained to detect the opening and closing of the folding screen, this may cause inaccurate opening and closing monitoring, thereby causing abnormal screen display switching.

Based on this, an embodiment of the present application provides another display method for a foldable device, which determines the display area of the foldable terminal based on the angle of the folding screen collected in real time by the foldable terminal.

Exemplarily, each of the two sides of the foldable device has an A+G sensor (accelerometer-sensor), and the A+G sensor can calculate the angle of the folding screen by rotating the rotation point in two-dimensional space.

For example, the coordinates of a point on the screen of the foldable device are P (x _p , y _p ), and after being rotated counterclockwise by an angle θ, the coordinates of the point are Q (x _q , y _q ), and the coordinates P and Q have the following relationship:

Since P (x _p , y _p ) and Q (x _q , y _q ) are known, the rotation angle θ can be calculated by the above formula, and then the angle of the folding screen can be obtained according to the rotation angle θ.

The angle of the folding screen changes in real time during the folding or unfolding process. During the switching process from the folding posture to the unfolding posture, the angle of the folding screen becomes larger and larger. Therefore, when the foldable device detects that the angle of the folding screen is getting larger and larger, it can be determined that the folding screen is switching from the folding posture to the unfolding posture. Correspondingly, during the switching process from the unfolding posture to the folding posture, the angle of the folding screen becomes smaller and smaller. Therefore, when the foldable device detects that the angle of the folding screen is getting smaller and smaller, it can be determined that the folding screen is switching from the unfolding posture to the folding posture.

Similar to the method of determining the display area of the foldable terminal according to the first capacitance value corresponding to the at least one capacitor structure described above, when the foldable terminal determines the switching direction of the posture of the folding screen (switching from the folding posture to the unfolding posture, or from the unfolding posture to the folding posture), the display area of the foldable terminal can be determined according to the size of the angle of the folding screen.

For a folding screen that folds inward, as shown in FIG8 , when the folding screen is in a folded posture, the angle of the folding screen is 0. The output of "0" indicates that the external screen is used to display the interface, and the output of "1" indicates that the internal screen (full screen of the folding screen) is used to display the interface.

When the foldable terminal determines that the foldable screen switches from the folded posture to the unfolded posture, if it is detected that the angle of the foldable screen is less than the first preset angle, the display area of the foldable terminal is determined to be the outer screen. If the foldable terminal detects that the angle of the foldable screen is greater than or equal to the first preset angle, the display area of the foldable terminal is determined to be the inner screen (the full screen of the foldable screen).

For a folding screen that folds inward, as shown in Figure 9, when the folding screen is in the unfolded position, the angle of the folding screen is π (180°). The output of "0" indicates that the external screen is used to display the interface, and the output of "1" indicates that the internal screen (full screen of the folding screen) is used to display the interface.

When the foldable terminal determines that the foldable screen switches from the unfolded posture to the folded posture, if it detects that the angle of the foldable screen is greater than the second preset angle, it determines that the display area of the foldable terminal is the inner screen (the full screen of the foldable screen). If the foldable terminal detects that the angle of the foldable screen is less than or equal to the second preset angle, it determines that the display area of the foldable terminal is the outer screen.

For a folding screen whose folding mode is outward folding, similar to FIG8 , when the foldable terminal determines that the folding screen switches from the folding posture to the unfolding posture, if it is detected that the angle of the folding screen is less than the third preset angle, the display area of the foldable terminal is determined to be the first screen or the second screen of the folding screen. If it is detected that the angle of the folding screen is greater than or equal to the third preset angle, the display area of the foldable terminal is determined to be the full screen of the folding screen.

For a folding screen whose folding mode is outward folding, similar to FIG9 , when the foldable terminal determines that the folding screen switches from the unfolded posture to the folded posture, if it is detected that the angle of the folding screen is greater than the fourth preset angle, the display area of the foldable terminal is determined to be the full screen of the folding screen. If it is detected that the angle of the folding screen is less than or equal to the fourth preset angle, the display area of the foldable terminal is determined to be the first screen or the second screen of the folding screen.

An embodiment of the present application provides a terminal device, which includes: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the terminal device executes the method in the above embodiment.

The embodiment of the present application provides a chip. The chip includes a processor, and the processor is used to call a computer program in a memory to execute the technical solution in the above embodiment. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

The embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium stores a computer program. The above method is implemented when the computer program is executed by the processor. The method described in the above embodiment can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the function can be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Computer-readable media can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium that can be accessed by a computer.

In one possible implementation, a computer readable medium may include random access memory (RAM), read-only memory (ROM), compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that is intended to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. Moreover, any connection is appropriately referred to as a computer readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave), the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of medium. Disk and optical disk as used herein include optical disk, laser disk, optical disk, digital versatile disc (DVD), floppy disk and Blu-ray disk, where disks usually reproduce data magnetically, while optical disks reproduce data optically using lasers. Combinations of the above should also be included in the scope of computer readable media.

An embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the above method.

The present application embodiment is described with reference to the flowchart and/or block diagram of the method, device (system) and computer program product according to the present application embodiment. It should be understood that each flow process and/or box in the flow chart and/or block diagram and the combination of the flow chart and/or box in the flow chart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable device to produce a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart or multiple flows and/or one box or multiple boxes of the block chart.

The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the scope of protection of the present application.

Claims (16)

1. A display method for a foldable terminal, wherein the foldable terminal comprises a foldable screen, the foldable screen comprises a touch electrode structure for touch detection, the touch electrode structure comprises a plurality of capacitor structures arranged in an array, the foldable screen comprises a foldable area, the foldable screen is folded or unfolded through the foldable area, wherein the method comprises: Acquire a first capacitance value corresponding to at least one capacitance structure in the foldable area; A display area of the foldable terminal is determined according to the first capacitance value. 2. The method according to claim 1 is characterized in that the folding mode of the foldable terminal is inward folding, the folding screen is the inner screen of the foldable terminal, the foldable terminal also includes an outer screen, and the inner screen and the outer screen are located on two opposite sides of the main body of the foldable terminal. 3. The method according to claim 2, wherein determining the display area of the foldable terminal according to the first capacitance value comprises: Detecting that the folding screen switches from a folded posture to an unfolded posture; If a first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is greater than or equal to a first threshold, determining that the display area is the inner screen; If a first capacitance value corresponding to any one of the at least one capacitance structure is smaller than the first threshold, it is determined that the display area is the external screen. 4. The method according to claim 3, wherein determining the display area of the foldable terminal according to the first capacitance value further comprises: Detecting that the folding screen switches from an unfolded posture to a folded posture; If the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is less than or equal to a second threshold, determining that the display area is the external screen; If a first capacitance value corresponding to any one of the at least one capacitance structure is greater than the second threshold, it is determined that the display area is the inner screen. The method according to claim 4 , wherein the first threshold is greater than the second threshold. 6 . The method according to claim 1 , wherein the foldable terminal is folded outwards, and the foldable screen includes a first screen and a second screen after being folded. 7. The method according to claim 6, wherein determining the display area of the foldable terminal according to the first capacitance value comprises: Detecting that the folding screen switches from a folded posture to an unfolded posture; If the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is greater than or equal to a third threshold, determining that the display area is the full screen of the folding screen; If the first capacitance value corresponding to any one of the at least one capacitance structure is smaller than the third threshold, it is determined that the display area is the first screen or the second screen. 8. The method according to claim 7, wherein determining the display area of the foldable terminal according to the first capacitance value further comprises: Detecting that the folding screen switches from an unfolded posture to a folded posture; If the first capacitance value corresponding to each capacitance structure in the at least one capacitance structure is less than or equal to a fourth threshold, determining that the display area is the first screen or the second screen; If the first capacitance value corresponding to any one of the at least one capacitance structure is greater than the fourth threshold, it is determined that the display area is the full screen of the folding screen. 9 . The method according to claim 8 , wherein the third threshold is greater than the fourth threshold. 10. The method according to claim 3 or 7, characterized in that the detecting that the folding screen switches from the folding posture to the unfolding posture comprises: When it is detected that the first capacitance value corresponding to each of the capacitance structures changes from small to large, it is determined that the folding screen switches from the folding posture to the unfolding posture; or, When the acceleration sensor detects that the angle of the folding screen changes from small to large, it is determined that the folding screen switches from the folding posture to the unfolding posture. 11. The method according to claim 4 or 8, characterized in that the detecting that the folding screen switches from the unfolded posture to the folded posture comprises: When it is detected that the first capacitance value corresponding to each of the capacitance structures changes from large to small, it is determined that the folding screen switches from the unfolded posture to the folded posture; or, When the acceleration sensor detects that the angle of the folding screen changes from large to small, it is determined that the folding screen switches from the unfolding posture to the folding posture. 12. The method according to any one of claims 1 to 11, characterized in that before obtaining a first capacitance value corresponding to at least one capacitor structure in the foldable area, the method further comprises: When the screen of the foldable terminal is turned on, obtaining a second capacitance value corresponding to the at least one capacitance structure in the foldable area; Determining whether a second capacitance value corresponding to each capacitance structure in the at least one capacitance structure is within a preset threshold range; The obtaining a first capacitance value corresponding to at least one capacitance structure in the foldable area includes: When the second capacitance value corresponding to each capacitance structure is within the preset threshold range, the first capacitance value is acquired. 13. The method according to any one of claims 1 to 12, characterized in that the touch electrode structure comprises a plurality of first electrodes arranged in a horizontal direction and a plurality of second electrodes arranged in a vertical direction, and the first electrodes and the second electrodes intersect with each other to form the capacitor structure. 14. A terminal device, comprising: a processor and a memory, wherein: The memory is used to store computer programs; The processor is used to call and execute the computer program so that the terminal device executes the method according to any one of claims 1 to 13. 15. A computer-readable storage medium, characterized in that it is used to store a computer program, and when the computer program is run on a computer, the computer is caused to execute the method according to any one of claims 1 to 13. 16. A computer program product, characterized by comprising a computer program, which enables a computer to execute the method according to any one of claims 1 to 13 when the computer program is executed.