Display device and driving method thereof

Abstract

The embodiment of the invention provides a display device and a driving method thereof. The display device comprises an application processor and a light sensor, and the application processor is connected with the light sensor. When the display device enters the water entry mode, the application processor controls the light sensor to enter the touch detection mode. The light sensor performs detection at a preset detection frequency in a touch detection mode, and outputs a touch signal and sends the touch signal to the application processor when a detection result meets the condition that an object approaches and the distance is smaller than a threshold value and / or the illumination intensity of the sensing area changes. The application processor responds to the touch signal to execute the touch instruction, so that the display device executes a specified function. Therefore, the touch operation can be realized when the display device is immersed into water.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device and its driving method. Background Technology

[0002] In the display field, touch screens have become an indispensable part of human-computer interaction due to their intuitiveness, space-saving design, and multi-touch support. In particular, AMOLED Oncell (Active-Matrix Organic Light-Emitting Diode Once-cell) displays are widely used in various electronic interaction devices due to their high durability, long lifespan, and multi-touch functionality. With improvements in overall device manufacturing capabilities and increasing end-user demands, the requirements for waterproof performance are becoming increasingly stringent. For example, sometimes even the highest internationally recognized IP68 protection rating for electronic device enclosures is required, meaning the device needs to remain submerged in water for a period of time while still displaying normally. Currently, although the device can still display normally after being submerged in water, touch operation is not possible. Summary of the Invention

[0003] This application provides a display device and its driving method, which can realize touch operation of the display device after it is immersed in water.

[0004] On one hand, this application provides a display device, including: an application processor and a light sensor; wherein the application processor is connected to the light sensor and is configured to: control the light sensor to enter a touch detection mode in response to the display device entering a water immersion mode; the light sensor is configured to: perform detection at a preset detection frequency in the touch detection mode; output a touch signal and send a touch signal to the application processor when the detection result meets preset conditions; the preset conditions include an object approaching and the distance between the object and the light sensor being less than a preset threshold, and / or, the illumination intensity of the sensing area corresponding to the light sensor in the display device changes; the application processor is further configured to: execute a corresponding touch instruction in response to the touch signal, so that the display device performs a corresponding specified function.

[0005] On the other hand, embodiments of this application provide a driving method for a display device. In response to the display device entering a water immersion mode, an application processor within the display device controls a light sensor within the display device to enter a touch detection mode. In the touch detection mode, the light sensor performs detection at a preset detection frequency, and when the detection result meets preset conditions, outputs a touch signal and sends the touch signal to the application processor. The preset conditions include an object approaching and the distance between the object and the light sensor being less than a preset threshold, and / or a change in the illumination intensity of the sensing area corresponding to the light sensor in the display device. The application processor, in response to the touch signal, executes a corresponding touch instruction to cause the display device to perform a corresponding specified function.

[0006] This application provides a display device in which, when an application processor detects that the display device has entered an underwater mode, it controls a light sensor to enter a touch detection mode. In this mode, the light sensor detects objects at a preset detection frequency. When the detection result indicates that an object is approaching at a distance less than a preset threshold, and / or the light intensity of the sensing area corresponding to the light sensor in the display device changes, the light sensor outputs a touch command to the application processor. Upon receiving the touch command, the application processor causes the display device to execute the specified function. Thus, the display device can achieve touch operation even underwater. Attached Figure Description

[0007] The present application will be further described below with reference to the accompanying drawings. It should be noted that the accompanying drawings described below are merely for explaining some embodiments of the present application. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0008] Figure 1 This is a structural block diagram of a display device provided in an embodiment of this application.

[0009] Figure 2 This is a schematic diagram illustrating an exemplary installation position of the proximity sensor in a notch-screen mobile phone, as provided in an embodiment of this application.

[0010] Figure 3 This is a schematic diagram illustrating an exemplary installation position of the proximity sensor in a wide-bezel mobile phone provided in an embodiment of this application.

[0011] Figure 4 This is a schematic diagram illustrating the exemplary dark mounting positions of a proximity sensor and an ambient light sensor, shown in a side view of a mobile phone provided for an embodiment of this application.

[0012] Figure 5 This is a schematic flowchart of a driving method for a display device provided in an embodiment of this application. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0014] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include steps or modules not listed, or may optionally include other steps or modules inherent to these processes, methods, products, or devices.

[0015] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0016] The display device provided in this application may include, but is not limited to, the following embodiments and combinations thereof.

[0017] In some embodiments, the display device provided in this application may be, but is not limited to, a liquid crystal display device or a self-emissive display device. For example, the display device may be an AMOLED display device as described above. Figure 1As shown, the display device 100 may include an application processor (AP) 101, an optical sensor (OS) 102, and a display screen (DS) 103. The AP 101 may be the core computing component of the display device 100 (such as a mobile phone, tablet, or in-vehicle system), responsible for data integration, logical decision-making, and system scheduling. The role of the AP 101 is not limited to driving the display; it can also enable human-computer interaction. The OS 102 may include, but is not limited to, a proximity light sensor (PLS) and an ambient light sensor (ALS). The OS 102 may be installed below the display screen 103 and connected to the AP 101. This connection may not be limited to physical contact but may also include the establishment of a data transmission channel. For example, as... Figures 2 to 4 As shown, Figure 2 The diagram shows the installation of the proximity sensor in a notch-screen mobile phone. Figure 3 This is a schematic diagram showing the installation of the proximity sensor in a wide-bezel mobile phone. Figure 4The diagram shows the installation schematic of the proximity sensor and ambient light sensor in a side view of a mobile phone. In practical applications, the PLS can be used to detect whether an object is approaching the display device 100 and to calculate the distance between the object and the display device 100. The detection frequency of the PLS is between 10 Hz and 100 Hz, and its applicable light intensity range is between 0 lux (lumens) and 100,000 lux. The ALS can sense the brightness of the current ambient light. The detection frequency of the ALS is between 1 Hz and 100 Hz, and its applicable light intensity range is between 0.01 lux and 100,000 lux. The display screen 103 may be, but is not limited to, a touch screen. When the display screen 103 is a touch screen, the touch screen may include a display panel and a touch panel, wherein the display panel may include multiple pixel units. The multiple pixel units may be arranged in rows and columns to form multiple pixel rows arranged along the row direction and multiple pixel columns arranged along the column direction, and each pixel row and each pixel column includes multiple pixel units. For ease of description, the pixel rows and pixel columns may also be referred to as "rows" and "columns" hereafter. In some embodiments, AP 101 sends image data to a driver chip connected to the display panel, causing the driver chip to control each pixel unit in the display panel according to the image data, so that the display panel displays visual content such as text, images, and videos that are recognizable to the human eye. The touch panel can be used to detect input touch commands so that AP 101 controls the display device 100 to perform corresponding functions. For example, when the display device 100 is a smartphone, when the user swipes down with three fingers on the touch screen, a screenshot function can be achieved. In simple terms, the display panel is a medium for presenting visual results. The touch panel can be a medium for input commands, which can control the specific visual content presented by the display panel. For example, when a user clicks on an application on the touch screen, the display panel will display the interface of the opened application.

[0018] In one exemplary implementation of the touch panel and display panel setup, the relationship between the display panel and the touch panel can be add-on / discrete. In this case, the touch panel is independent of the display panel and is attached to the top of the display panel via an adhesive layer. An exemplary structure can be as follows: from top to bottom: surface glass, touch sensor layer (touch panel), adhesive layer, display panel. In another exemplary implementation, the relationship between the display panel and the touch panel can also be integrated. This integration can include two types: On-Cell and In-Cell. In the On-Cell type, the touch sensor layer is directly integrated into the outermost layer of the display panel (such as on the OLED encapsulation glass). For example, AMOLED screens can use a flexible On-Cell solution. In the In-Cell type, the touch sensor is embedded inside the display panel (such as in the thin-film transistor (TFT) array layer of a liquid crystal display (LCD). For example, Micro-OLED displays can use an In-Cell solution.

[0019] Based on the aforementioned structure and description, with increasingly stringent requirements for the waterproof performance of display devices, while the display function remains normal for a period of time in special environments (such as underwater), the touchscreen operation becomes unusable. Therefore, this application provides a display device that can operate in both a water-immersion mode and a non-water-immersion mode. Furthermore, in water-immersion mode, a light sensor is used for touch operation. In non-water-immersion mode, the touchscreen operation is used.

[0020] The touch operation implemented by the display device in both submerged and non-submerged modes will be explained in detail below.

[0021] Example 1

[0022] In practical applications, the display screen 103 of the display device 100 may be, but is not limited to, a capacitive touch screen. This capacitive touch screen may include a touch panel and a touch chip for controlling the touch panel. Based on this, AP101 can determine whether the display device 100 enters the water immersion mode (i.e., the working water immersion mode) using the following two methods.

[0023] In the first approach, the touch chip first detects the current self-capacity value of each transmission channel of the touch panel and sends this value to the AP101. Then, the AP101 receives the current self-capacity value of each transmission channel and determines the number of transmission channels whose current self-capacity value is greater than or equal to a set self-capacity value. If the number of transmission channels is greater than or equal to a preset number, the application processor determines that the display device has entered a water immersion mode. If the number of transmission channels is less than the preset number, the AP101 determines that the display device has entered a non-water immersion mode.

[0024] In the second approach, firstly, the touch chip detects the current self-capacity value of each transmission channel of the touch panel and determines the number of transmission channels whose current self-capacity value is greater than or equal to a set self-capacity value. If the number of transmission channels is greater than or equal to a preset number of channels, the touch chip determines that the display device has entered a water immersion mode and sends a first indication signal to the application processor. If the number of transmission channels is less than the preset number of channels, the touch chip determines that the display device has entered a non-water immersion mode and sends a second indication signal to the application processor. Then, upon receiving the first indication signal, the AP101 determines that the display device has entered a water immersion mode. Alternatively, upon receiving the second indication signal, the AP101 determines that the display device has entered a non-water immersion mode.

[0025] It should be noted that each transmission channel (TRx channel, or sensing electrode) of a capacitive touchscreen forms a parasitic capacitance (i.e., self-capacitance Cs) with ground. When the touch panel is touched, the capacitance value of the self-capacitance Cs (i.e., the self-capacitance value) increases. Since water will cover the touch panel when it is submerged, if the display device 100 falls into the water, the self-capacitance value of the entire touch panel will increase. Therefore, the AP101 or touch chip in this embodiment can determine whether the display device 100 has entered the water immersion mode by comparing the current self-capacitance value with a set self-capacitance value, counting the number of transmission channels whose current self-capacitance value is greater than or equal to the set self-capacitance value (i.e., the number of transmission channels), and comparing the counted number of transmission channels with a preset number of channels. If the number of transmission channels is greater than or equal to the preset number of channels, the AP101 or touch chip determines that the display device 100 has entered the water immersion mode. If the number of transmission channels is less than the preset number of channels, AP101 or the touch chip determines that the display device 100 has entered a non-water immersion mode, or in other words, AP101 or the touch chip determines that the display device 100 is operating in a non-water immersion mode. Here, the set self-capacity value can be the self-capacity value of each transmission channel stored in the memory of the application processor or touch chip when there is no touch on the touch panel. The set number of channels can be set based on empirical values.

[0026] In some embodiments, when the display device 100 is used in a normal environment (non-underwater environment), when touched by a finger, an additional coupling capacitance Cf is added between the finger and the sensing electrode, resulting in an increase in the total self-capacitance (Ctotal = Cs + Cf). At this time, AP101 or the touch chip can periodically apply an excitation signal to each TRx channel and determine whether there is a touch by measuring the capacitance change (ΔC, the difference between the measured current self-capacitance and the set self-capacitance). When ΔC exceeds a certain threshold, AP101 or the touch chip determines that the touch panel has been touched. It should be noted that the determination of whether the touch is a finger also needs to be combined with other sensors in the display device (such as a temperature sensor or a biometric fingerprint sensor, etc.) for assistance. Since water is a conductor, an equivalent capacitance is formed between the water-covered sensing electrode and ground, significantly increasing the self-capacitance, resulting in an increase in the capacitance change ΔC of the display device in water. 水 It is far greater than the capacitance change ΔC caused by normal contact of the display device under normal conditions (such as finger touch). 正常接触 That is, ΔC 水 >>ΔC 正常接触 Therefore, in this embodiment, AP101 or the touch chip can still detect ΔC by comparing it with the pre-stored ΔC. 正常接触 And statistically, it was found that ΔC was greater than the pre-stored ΔC. 正常接触 The number of TRx channels is counted, and if the counted number of TRx channels is greater than or equal to the preset number of channels, the display device is determined to enter the water immersion mode; otherwise, the display device is determined to enter the non-water immersion mode, or in other words, the display device is determined to be operating in the non-water immersion mode.

[0027] When AP101 detects that the display device 100 has entered the water immersion mode, AP101 can be configured to control the light sensor to enter the touch detection mode in response to the display device 100 entering the water immersion mode. OS102 can be configured to perform detection at a preset detection frequency in the touch detection mode, and output a touch signal and send it to the application processor when the detection result satisfies the conditions that an object is approaching and the distance between the object and the light sensor is less than a preset threshold and / or the light intensity of the sensing area corresponding to the light sensor in the display device changes. AP101 can receive the touch signal transmitted by OS102 and execute the corresponding touch command in response to the touch signal to cause the display device 100 to perform the corresponding specified function. That is, when AP101 detects that the display device 100 has entered the water immersion mode, AP101 controls OS102 to enter the touch detection mode. OS102 performs detection at a preset detection frequency in the touch detection mode, and outputs a touch signal to AP101 when the detection result meets the preset conditions. After receiving the touch signal, AP 101 executes the touch command corresponding to the touch signal, causing the display device to perform the specified function corresponding to the touch command. The touch command may include, but is not limited to, click commands and swipe commands. The specified function includes, but is not limited to, a first function, a second function, a third function, and a fourth function. For example, the first function, the second function, the third function, and the fourth function may be, but are not limited to, a camera function, focus adjustment, power off, or a call function. The first function, the second function, the third function, and the fourth function may be the same or different.

[0028] In practical design, after the display device 100 enters the water immersion mode, different touch operations can be achieved using different light sensors 102. The following three implementation methods are used to illustrate this application.

[0029] Method 1

[0030] If OS102 includes a proximity sensor, then when AP 101 detects that the display device 100 has entered a water immersion mode, it controls the proximity sensor to enter the touch detection mode. In the touch detection mode, the proximity sensor performs detection at the first detection frequency, and when the detection result meets a first preset condition, it outputs a first touch signal and transmits the first touch signal to the application processor. Subsequently, the application processor responds to the first touch signal by executing a first click instruction to cause the display device to perform a first function. The first preset condition can be that the proximity sensor detects an approaching object and the distance between the object and the proximity sensor is less than or equal to the preset threshold.

[0031] It should be noted that the preset threshold can be, but is not limited to, 0.01 millimeters (mm). In this case, when the proximity sensor detects an object approaching and the distance between the object and the proximity sensor is less than 0.01 mm, the proximity sensor will send a first touch signal to the application processor 101. Upon receiving the first touch signal, the application processor 101 will execute a first click command in response to the first touch signal, causing the display device to perform the corresponding first function.

[0032] For example, suppose the first function is a photo-taking function. The process described above is that the proximity sensor detects objects at a first preset detection frequency (e.g., 100Hz), and when it detects an object approaching and the distance between the object and the proximity sensor is less than 0.01mm, it sends a first touch signal to the application processor, so that the application processor responds to the first touch signal to execute a first click command, thereby enabling the display device to perform the photo-taking function.

[0033] It should be understood that the object can be, but is not limited to, a finger. In most use cases, the object is a finger. In practical applications, to prevent accidental touches underwater, the application processor can also combine other sensors in the display device (such as temperature sensors or biometric fingerprint sensors) to help determine whether the object approaching the proximity sensor is a finger. For example, the temperature sensor can collect the object's temperature and transmit it to the application processor. The application processor determines whether it is a finger based on the temperature; for example, if the object's temperature is greater than a certain set value, it determines that the object approaching the proximity sensor is a finger.

[0034] Method 2

[0035] If the light sensor 102 includes an ambient light sensor, then when the AP 101 detects that the display device 100 has entered the water immersion mode, it controls the ambient light sensor to enter the touch detection mode. In the touch detection mode, the ambient light sensor performs detection at the second detection frequency, and when the detection result meets a second preset condition, it outputs a second touch signal and transmits the second touch signal to the application processor. The second preset condition is that the ambient light sensor detects a change in the ambient light intensity in the sensing area of ​​the display device 100 corresponding to the ambient light sensor. Afterwards, the AP 101 responds to the second touch signal by executing the second click command to cause the display device to perform the second function.

[0036] It should be noted that the ambient light sensor can detect changes in the intensity of ambient light in the sensing area. Therefore, underwater, the ambient light sensor detects at a second detection frequency (e.g., 100Hz) and sends a second touch signal to AP 101 when it detects a change in the intensity of light in the sensing area. AP 101 receives the second touch signal and, in response, executes a second click command to cause the display device to perform the second function. As described above, the second function may be the same as or different from the first function.

[0037] Furthermore, in both Method 1 and Method 2, the first detection frequency and the second detection frequency can be the same or different. In Method 2, other types of sensors can also be used to assist in determining whether it is a finger touch.

[0038] Method 3

[0039] If the light sensor 102 includes a proximity light sensor and an ambient light sensor, then when the AP 101 detects that the display device 100 has entered the water immersion mode, it controls both the ambient light sensor and the proximity light sensor to enter the touch detection mode. In the touch detection mode, the proximity light sensor performs detection at the first detection frequency; if the detection result meets the first preset condition, it outputs a first touch signal and transmits the first touch signal to the AP 101. The ambient light sensor performs detection at the second detection frequency in the touch detection mode; if the detection result meets the second preset condition, it outputs a second touch signal and transmits the second touch signal to the AP 101. The AP 101 responds to the first touch signal and the second touch signal by executing the sliding command, causing the display device 100 to perform the specified function corresponding to the sliding command. The first and second preset conditions have the same meanings as those in the aforementioned methods one and two, and will not be repeated here.

[0040] In practical applications, the aforementioned sliding command may include a first sliding command or a second sliding command. The specified function may include a third function corresponding to the first sliding command or a fourth function corresponding to the second sliding command. The first sliding command may include a command to slide the object from the proximity sensor to the ambient light sensor. The second sliding command may include a command to slide the object from the ambient light sensor to the proximity sensor. Based on this, the application processor may execute the first sliding command in response to the order in which the first touch signal and the second touch signal are received as a first order, so that the display device performs the third function; the first order includes the AP 101 receiving the first touch signal first, and then receiving the second touch signal. Alternatively, the AP 101 may execute the second sliding command in response to the order in which the first touch signal and the second touch signal are received as a second order, so as to implement the fourth function; the second order includes the AP 101 receiving the second touch signal first, and then receiving the first touch signal.

[0041] That is, AP 101 can execute different sliding commands depending on the order in which the first touch signal and the second touch signal are received, thereby enabling the display device to achieve more touch functions.

[0042] In some embodiments, in order to improve and enhance underwater touch operation, the light sensor 102 may include multiple sets of proximity light sensors and ambient light sensors, wherein the multiple sets of proximity light sensors and ambient light sensors are used to realize touch operation with different functions.

[0043] For example, two sets of proximity light sensors and ambient light sensors are set up. One set of proximity light sensors and ambient light sensors enables touch operation for taking pictures, while the other set of proximity light sensors and ambient light sensors enables touch operation for focusing or zooming in / out of the camera.

[0044] Example 2

[0045] In practical applications, the display device 100 enters a non-water immersion mode, also known as normal mode. At this time, the touchscreen is usable, and touch operations are implemented by the touchscreen in conjunction with the application processor.

[0046] For the optical sensor, when the application processor detects that the display device has entered a non-water immersion mode, the application processor responds to the display device entering a non-water immersion mode by controlling the optical sensor to enter a non-touch detection mode; wherein, the detection frequency of the optical sensor in the non-touch detection mode is less than the detection frequency of the optical sensor in the touch detection mode.

[0047] For example, the light sensor may include a proximity sensor and an ambient light sensor. In non-touch detection mode, the proximity sensor can emit infrared light at a certain detection frequency (e.g., 50Hz) and detect the intensity or duration of the reflected light to determine the distance between the display device (e.g., a mobile phone) and the object. This can be used to automatically turn off the screen during calls or prevent accidental touches. For instance, when a user brings the phone close to their ear, the proximity sensor detects the proximity and automatically turns off the screen to prevent accidental touches and save power. Furthermore, in certain scenarios (such as when the phone is in a pocket or close to an object, or when the environment is dark and an object is near the proximity sensor), the proximity sensor detects the proximity and the phone can keep the screen off or limit wake-up, preventing accidental screen touches caused by friction in the pocket, which could lead to accidental dialing, application launches, or power consumption. In non-touch detection mode, the ambient light sensor senses the brightness of the current environment at a certain detection frequency (e.g., 60Hz) and adaptively adjusts the brightness of the display device (e.g., a mobile phone) screen.

[0048] The display device provided in this application embodiment detects the self-capacitance value through its built-in capacitive touchscreen. After immersion in water, the self-capacitance value increases significantly. If multiple TRx channel self-capacitance values ​​increase, the display device is determined to have entered a water immersion mode. If the TRx channel self-capacitance values ​​do not increase, the display device is determined to be in a non-water immersion mode. When the display device is in a non-water immersion mode, the proximity sensor and ambient light sensor operate in normal mode (non-touch detection mode). When the display device is in a water immersion mode, the proximity sensor and ambient light sensor switch their operating modes (touch detection mode) to enable touch functionality. The embodiments provided in this application enable waterproof mobile phones to maintain basic touch functions, such as taking photos, after immersion in water, with little or no additional cost.

[0049] Based on the display device provided above, embodiments of this application also provide a driving method, applied to, for example... Figures 1 to 4 The display device is shown. The driving method is as follows: Figure 5 The steps shown are as follows.

[0050] S1, the application processor in the display device responds to the display device entering the water immersion mode by controlling the light sensor in the display device to enter the touch detection mode.

[0051] S2, the light sensor performs detection at a preset detection frequency in the touch detection mode, and outputs a touch signal and sends a touch signal to the application processor when the detection result meets preset conditions; the preset conditions include an object approaching and the distance between the object and the light sensor is less than a preset threshold, and / or the light intensity of the sensing area corresponding to the light sensor in the display device changes.

[0052] S3, the application processor responds to the touch signal by executing a corresponding touch instruction to cause the display device to perform a corresponding specified function.

[0053] It should be noted that the driving method provided here is based on the same concept as the display device provided earlier. The features mentioned here have been described in detail above and can be referred to for understanding. They will not be repeated here.

[0054] The display device and its driving method provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display device, characterized in that, include: Application processor and light sensor; among which, The application processor is connected to the light sensor and is configured to: control the light sensor to enter the touch detection mode in response to the display device entering the water immersion mode; The light sensor is configured to: perform detection at a preset detection frequency in the touch detection mode; output a touch signal and send a touch signal to the application processor when the detection result meets preset conditions; the preset conditions include an object approaching and the distance between the object and the light sensor being less than a preset threshold, and / or the light intensity of the sensing area corresponding to the light sensor in the display device changes. The application processor is further configured to execute a corresponding touch instruction in response to the touch signal, so that the display device performs a corresponding specified function.

2. The display device according to claim 1, characterized in that, The light sensor includes a proximity light sensor; the preset detection frequency includes a first detection frequency; the touch signal includes a first touch signal; the preset condition includes a first preset condition; the touch command includes a first click command; the specified function includes a first function. The proximity sensor is configured to: perform detection at the first detection frequency in the touch detection mode; output a first touch signal and transmit the first touch signal to the application processor when the detection result meets the first preset condition; the first preset condition is that the proximity sensor detects an object approaching and the distance between the object and the proximity sensor is less than or equal to the preset threshold. The application processor is further configured to execute the first click instruction in response to the first touch signal, so that the display device performs the first function.

3. The display device according to claim 1, characterized in that, The light sensor includes an ambient light sensor; the preset detection frequency includes a second detection frequency; the touch signal includes a second touch signal; the preset conditions include a second preset condition; the touch command includes a second click command; and the specified function includes a second function. The ambient light sensor is configured to: perform detection at the second detection frequency in the touch detection mode; output a second touch signal and transmit the second touch signal to the application processor when the detection result meets the second preset condition; the second preset condition is that the ambient light sensor detects a change in the ambient light intensity of the sensing area corresponding to the ambient light sensor in the display device; The application processor is further configured to execute the second click instruction in response to the second touch signal, so that the display device performs the second function.

4. The display device according to claim 1, characterized in that, The light sensor includes a proximity light sensor and an ambient light sensor; the preset detection frequency includes a first detection frequency and a second detection frequency; the preset conditions include a first preset condition and a second preset condition; the touch command includes a swipe command. The proximity sensor is configured to perform detection at the first detection frequency in the touch detection mode; and to output a first touch signal and transmit the first touch signal to the application processor when the detection result meets the first preset condition. The preset condition is that the proximity sensor detects an approaching object and the distance between the object and the proximity sensor is less than or equal to the preset threshold. The ambient light sensor is configured to perform detection at the second detection frequency in the touch detection mode; when the detection result meets the second preset condition, it outputs a second touch signal and transmits the second touch signal to the application processor; the second preset condition is that the ambient light sensor detects a change in the ambient light intensity of the sensing area corresponding to the ambient light sensor in the display device; The application processor is configured to execute the sliding command in response to the first touch signal and the second touch signal, so that the display device performs the specified function corresponding to the sliding command.

5. The display device according to claim 4, characterized in that, The sliding command includes a first sliding command or a second sliding command; the specified function includes a third function corresponding to the first sliding command or a fourth function corresponding to the second sliding command; the first sliding command includes a command for the object to slide from the proximity sensor to the ambient light sensor; the second sliding command includes a command for the object to slide from the ambient light sensor to the proximity sensor. The application processor is configured to execute the first sliding instruction in response to a first order in which the order of receiving the first touch signal and the second touch signal is specified, so that the display device performs the third function; the first order includes the application processor receiving the first touch signal first, and then receiving the second touch signal; Alternatively, in response to a second sequence in which the first touch signal and the second touch signal are received, the second sliding instruction is executed to achieve the fourth function; the second sequence includes the application processor receiving the second touch signal first, and then receiving the first touch signal.

6. The display device according to any one of claims 1 to 5, characterized in that, The application processor is also configured to: control the light sensor to enter a non-touch detection mode in response to the display device entering a non-water immersion mode; The detection frequency of the optical sensor in the non-touch detection mode is lower than the detection frequency of the optical sensor in the touch detection mode.

7. The display device according to claim 6, characterized in that, The display device further includes a capacitive touchscreen; the capacitive touchscreen includes a touch chip and a touch panel; wherein... The touch chip is configured to: detect the current self-capacity value of each transmission channel of the touch panel; and send the current self-capacity value of each transmission channel to the application processor. The application processor is further configured to: receive the current self-capacity value of each transmission channel; determine the number of transmission channels in each transmission channel whose current self-capacity value is greater than or equal to a set self-capacity value; and if the number of transmission channels is greater than or equal to a preset number of channels, determine that the display device enters the water immersion mode; and if the number of transmission channels is less than the preset number of channels, determine that the display device enters the non-water immersion mode.

8. The display device according to claim 6, characterized in that, The display device further includes a capacitive touchscreen; the capacitive touchscreen includes a touch chip and a touch panel; wherein... The touch chip is configured to detect the current self-capacitance value of each transmission channel of the touch panel; determine the number of transmission channels whose current self-capacitance value is greater than or equal to a set self-capacitance value; and if the number of transmission channels is greater than or equal to a preset number of channels, determine that the display device has entered a water immersion mode and send a first indication signal to the application processor; if the number of transmission channels is less than the preset number of channels, determine that the display device has entered a non-water immersion mode and send a second indication signal to the application processor. The application processor is further configured to: determine that the display device has entered a water immersion mode upon receiving the first indication signal; or determine that the display device has entered a non-water immersion mode upon receiving the second indication signal.

9. The display device according to claim 4, characterized in that, The light sensor includes multiple sets of proximity light sensors and ambient light sensors, wherein the multiple sets of proximity light sensors and ambient light sensors are used to realize different touch operations.

10. A driving method for a display device, characterized in that, include: The application processor within the display device responds to the display device entering the water immersion mode by controlling the light sensor within the display device to enter the touch detection mode; The light sensor performs detection at a preset detection frequency in the touch detection mode, and outputs a touch signal and sends a touch signal to the application processor when the detection result meets preset conditions; the preset conditions include an object approaching and the distance between the object and the light sensor is less than a preset threshold, and / or the light intensity of the sensing area corresponding to the light sensor in the display device changes. The application processor responds to the touch signal by executing a corresponding touch instruction, so that the display device performs the corresponding specified function.

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