Electronic device and display screen control method

Abstract

Embodiments of the present application relate to the technical field of wireless charging, and provide an electronic device and a display screen control method, for use in improving the accuracy of determining the relative position of a wireless charging device and the electronic device. The electronic device comprises a display screen and a processor. The display screen comprises a touch driver chip and a plurality of touch sensors arranged at intervals. The touch sensors collect transmitted signals from a wireless charging power coil. The touch driver chip feeds back the collection result to the processor. The processor determines, on the basis of the collection result from the display screen, whether there is a touch operation or a wireless charging power coil above the display screen. The detection of the position of a wireless charging power coil does not require the participation of a power coil in the electronic device; when a wireless charging power coil is outside an area that can be collected by the power coil of the electronic device, the display screen can still detect the position of the wireless charging power coil, and the relative position of a wireless charging device and the electronic device can be determined with higher accuracy.

Description

Electronic device and display screen control method

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on January 5, 2024, with application number 202410029299.7 and invention name “Control Method for Electronic Device and Display Screen”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless charging technology, and in particular to a control method for an electronic device and a display screen. Background Art

[0003] Wireless power transmission (WPT) is a technology that uses coupled electromagnetic fields to transfer electrical energy to charge devices. Compared to traditional contact charging, wireless charging has gained widespread adoption due to its advantages, including ease of use, no sparks or electric shock hazards, no mechanical wear, adaptability to a variety of harsh environments and weather conditions, and ease of unmanned, automated, and mobile charging.

[0004] Currently, mainstream wireless charging relies on establishing a connection between the first power coil in the wireless charging device and the second power coil in the device being charged. This allows the alignment of the first and second power coils to be determined and a prompt to be displayed. If the first and second power coils are not connected, it is impossible to determine the alignment and perform subsequent operations. However, whether the first and second power coils can establish a connection is affected by many factors, such as their alignment and the environment, making it difficult to determine the relative position of the first and second power coils, or even incorrectly determining it.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide a control method for an electronic device and a display screen, for improving the accuracy of determining the relative position of a wireless charging device and a device to be charged.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] According to a first aspect of an embodiment of the present application, an electronic device is provided, comprising: a display screen and a processor, wherein the display screen includes a touch driver chip and a plurality of touch sensors spaced apart from each other; when a wireless charging device approaches the display screen, the touch sensor is configured to receive a transmission signal from a first power coil of the wireless charging device and output a feedback signal; the touch driver chip is configured to collect feedback signals output by at least one touch sensor and transmit the feedback signals to the processor, the feedback signals being configured to indicate the relative position of the first power coil and the display screen; and the processor adjusts the display and / or touch control of the display screen in response to the feedback signals.

[0009] The electronic device provided in the embodiment of the present application uses the touch detection technology corresponding to the display screen to identify whether the first power coil is located above the display screen along the thickness direction and the pixel position of the first power coil on the display screen along the length direction and the width direction to determine the relative position of the first power coil and the display screen (the absolute position of the first power coil itself). The processor adjusts the display of the display screen in response to the feedback signal representing the position information to provide feedback on the detection result. Based on this, the detection of the position of the first power coil does not require the participation of the second power coil in the electronic device. When the first power coil is outside the area that can be collected by the second power coil, the position of the first power coil can still be detected. It is not limited by the prerequisite for the successful handshake between the first power coil and the second power coil, and is not limited by the effective detection area of ​​the second power coil. The accuracy of judging the relative position of the wireless charging device and the electronic device is higher.

[0010] In a possible implementation, adjusting the display of the display screen includes: adjusting a display state of the display screen to improve an influence of the first power coil on the display.

[0011] In one possible implementation, the electronic device further includes a display driver chip coupled to the processor. Adjusting the display state of the display screen includes controlling the display driver chip to increase the display brightness of the display screen. In high-brightness mode, water ripples are less noticeable or disappear. Therefore, increasing the display brightness of the display screen can alleviate display interference caused by the first power coil.

[0012] In one possible implementation, the electronic device further includes a display driver chip coupled to the processor. Adjusting the display state of the display screen includes controlling the display driver chip to drive the display screen to exit or not enter the off-screen display mode. In low refresh rate display states, water ripples on the display screen are more noticeable. Increasing the refresh rate of the display screen can improve the display quality.

[0013] In one possible implementation, the electronic device further includes a display driver chip coupled to the processor. Adjusting the display state of the display screen includes controlling the duration of a data write signal output by the display driver chip to the display screen to be greater than a set value. Because the first power coil affects the potential of the gate of the driver transistor, interfering with the charging effect on the gate of the driver transistor, extending the duration of the data write signal prolongs the charging time, improves the stability of capacitor C in the driver circuit, and thereby reduces display interference.

[0014] In one possible implementation, the electronic device further includes a display driver chip coupled to the processor. Adjusting the display state of the display screen includes controlling a period during which the display driver chip outputs a data write signal to the display screen to be non-intersecting with a period during which the first power coil transmits a signal. By ensuring that the period during which the display driver chip outputs the data write signal to the display screen is non-intersecting with the period during which the first power coil transmits a signal, interference with the charging effect of the first power coil on the gate of the driver transistor can be avoided, thereby reducing display interference.

[0015] In one possible implementation, the processor is configured to adjust the display state of the display screen when the relative position indicates that the first power coil is within a set distance from the light-emitting side of the display screen. If the first power coil is farther away from the display screen, the impact on the display may be minimal, and adjustment of the display state of the display screen may not be necessary. By adding a distance determination step, if the first power coil has a minor impact on the display, there is no need to adjust the display state of the display screen, thereby reducing power consumption.

[0016] In one possible implementation, adjusting the display of the display screen includes adjusting the displayed image on the display screen. Based on the detected actual position of the first power coil on the display screen, combined with the folding state and screen status of the electronic device, the user is prompted to place the wireless charging device in a charging area supported by the electronic device, thereby guiding the user to accurately move the device and improve the user experience.

[0017] In one possible implementation, adjusting the display screen includes generating prompt information, the prompt information including one or more of the following: the relative position of the first power coil and the display screen, the relative position of the first power coil and the second power coil of the electronic device, the movement direction of the first power coil, the movement distance of the first power coil, the movement direction of the electronic device, the movement distance of the electronic device, the position of the second power coil, and removing an interfering object; and the display screen is configured to display the prompt information. Multiple prompt information can be generated to guide the user to accurately move the device, thereby improving the user experience.

[0018] In one possible implementation, the processor responds to the feedback signal, including determining whether the feedback signal is a charging interference signal or a touch signal. By determining whether the feedback signal is a touch signal, the processor can mitigate the problem of the processor mistakenly feeding back interference signals as touch signals, thereby reducing the probability of malfunction of the electronic device.

[0019] In a possible implementation, the processor determines that the feedback signal is a charging interference signal and does not output the touch control signal.

[0020] In a possible implementation, the processor determines that the feedback signal is a touch signal, and outputs a touch control signal according to the touch signal.

[0021] In one possible implementation, the processor further obtains the time period during which the first power coil transmits the signal in response to the feedback signal, and controls the touch driver chip to collect the feedback signal so that the time period overlaps with the time period during which the first power coil transmits the signal. By controlling the time period during which the touch driver chip collects the feedback signal to overlap with the time period during which the first power coil transmits the signal, at least one of the feedback signals collected by the touch driver chip can represent the relative position of the first power coil and the display screen, thereby reducing power consumption while meeting minimum detection requirements.

[0022] In one possible implementation, controlling the time period during which the touch driver chip collects feedback signals intersects with the time period during which the first power coil transmits signals, including controlling the time period during which the touch driver chip collects feedback signals to lie within the time period during which the first power coil transmits signals. By controlling the time period during which the touch driver chip collects feedback signals to lie within the time period during which the first power coil transmits signals, sampling can be synchronized with coding by the first power coil, thereby improving inaccurate or non-detection issues with lower power consumption.

[0023] The second aspect of the embodiments of the present application provides a method for controlling a display screen, which is applied to an electronic device; the electronic device includes a display screen and a processor; the display screen includes a touch driver chip and a plurality of touch sensors arranged at intervals; the control method includes: when a wireless charging device is close to the display screen, the touch sensor receives a transmission signal from a first power coil of the wireless charging device and outputs a feedback signal; the touch driver chip collects a feedback signal output by at least one touch sensor and sends the feedback signal to the processor, the feedback signal being used to indicate the relative position of the first power coil and the display screen; the processor adjusts the display and / or touch of the display screen in response to the feedback signal. The beneficial effects of the display screen control method provided in the second aspect of the embodiments of the present application are the same as the beneficial effects of the electronic device provided in the first aspect, and will not be repeated here.

[0024] In a possible implementation, adjusting the display of the display screen includes: adjusting a display state of the display screen.

[0025] In a possible implementation, adjusting the display of the display screen includes: adjusting a display screen of the display screen.

[0026] In a possible implementation, responding to the feedback signal includes: determining whether the feedback signal is a charging interference signal or a touch signal, and outputting a control signal according to the determination result.

[0027] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program so that the electronic device executes the method for controlling a display screen as described in any one of the second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1A is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0029] 1B and 1C are schematic diagrams of an alignment situation provided in an embodiment of the present application;

[0030] FIG2 is a diagram showing a coupling relationship between an electronic device and a first power coil provided in an embodiment of the present application;

[0031] FIG3A is a schematic diagram of a touch sampling principle provided by an embodiment of the present application;

[0032] FIG3B is a waveform diagram of an idle mode provided by an embodiment of the present application;

[0033] FIG3C is a waveform diagram of an active mode provided in an embodiment of the present application;

[0034] FIG4 is an equivalent circuit diagram of a first power coil and an electronic device provided in an embodiment of the present application;

[0035] FIG5A is a transmission power waveform diagram of a first power coil provided in an embodiment of the present application;

[0036] 5B and 5C are a timing diagram of a first power coil and a timing diagram of a touch driver chip provided in an embodiment of the present application;

[0037] FIG6A is a schematic diagram of confirming the position of a first power coil according to an embodiment of the present application;

[0038] FIG6B is a schematic diagram of a touch signal determination process according to an embodiment of the present application;

[0039] FIG7A is a schematic diagram of coupling interference of a first power coil of a pixel circuit provided by an embodiment of the present application;

[0040] FIG7B is a driving timing diagram of a pixel circuit provided in an embodiment of the present application;

[0041] FIG7C is a schematic diagram showing an abnormality according to an embodiment of the present application;

[0042] FIG8 is a grayscale curve diagram provided in an embodiment of the present application;

[0043] FIG9A is a schematic diagram of refresh rates in different display modes provided by an embodiment of the present application;

[0044] FIG9B is a schematic diagram of a prompt of a display screen provided in an embodiment of the present application;

[0045] FIG10 is a driving timing diagram of a display screen provided in an embodiment of the present application;

[0046] FIG11 is a timing diagram of a first power coil and a driving timing diagram of a display screen provided in an embodiment of the present application;

[0047] 12A-12C are schematic diagrams of a display screen outputting prompt information provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0049] Hereinafter, the terms "second," "first," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature qualified as "second," "first," etc., may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0050] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", and "right" may be defined including but not limited to the orientation relative to the schematic placement of the components in the drawings. It should be understood that these directional terms may be relative concepts, which are used for relative descriptions and clarifications, and may change accordingly according to changes in the orientation of the components in the drawings.

[0051] In the embodiments of this application, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean direct connection or indirect connection through an intermediate medium. In addition, the term "coupling" can mean direct electrical connection or indirect electrical connection through an intermediate medium. The term "contact" can mean direct contact or indirect contact through an intermediate medium.

[0052] In the embodiments of the present application, "and / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0053] An embodiment of the present application provides an electronic device, which may be, for example, a foldable electronic device, or a bar-type electronic device. The electronic device may be, for example, a mobile phone, a tablet computer, a laptop computer, an e-reader, a personal computer (PC), a personal digital assistant (PDA), a smart wearable product (e.g., a smart watch, a smart bracelet), a virtual reality (VR) device, an augmented reality (AR) device, etc.

[0054] The embodiments of the present application do not impose any special restrictions on the specific form of the above-mentioned electronic device. For the convenience of explanation, the following embodiments are all illustrated by taking the electronic device as a mobile phone.

[0055] FIG1A is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

[0056] As shown in FIG1A , the electronic device 1 mainly includes a cover plate 10 , a display screen 20 , a middle frame 30 and a rear shell (or battery cover, housing) 40 .

[0057] The display screen 20 has a light-emitting side through which the display image can be viewed and a back side opposite the light-emitting side. The cover 10 is located on the light-emitting side of the display screen 20, and the rear housing 40 is located on the back side of the display screen 20. The display screen 20 includes an active area (AA) for displaying images, which includes multiple sub-pixels (SP).

[0058] In one possible embodiment, the display screen 20 is a liquid crystal display (LCD). Therefore, the electronic device 1 further includes a backlight unit (BLU) located on the back of the LCD. The backlight unit can provide light to the LCD so that each sub-pixel in the LCD can emit light to display an image.

[0059] In another possible embodiment, the display screen 20 is a self-luminous display module such as an organic light emitting diode (OLED) display module, an active-matrix organic light-emitting diode (AMOLED) display module, a mini organic light-emitting diode (Mini-OLED) display module, a micro light-emitting diode (Micro-LED) display module, a micro organic light-emitting diode (Micro-OLED) display module, or a quantum dot light emitting diode (QLED) display module. In this case, the display screen 20 can be a rigid display module or a flexible display module.

[0060] The cover plate 10 is located on the side of the display screen 20 away from the middle frame 30. The cover plate 10 is a light-transmitting structure and acts as a protective layer covering the display surface of the display screen 20. In this way, light transmitted from the display surface of the display screen 20 can pass through the cover plate 10 and be received by the user. The display surface of the display screen 20 involved in the embodiments of the present application is the side of the display screen 20 used to display the image to the user. The display surface of the display screen 20 is located on the same side as the light-emitting side of the display screen 20, and the back surface of the display screen 20 refers to the side opposite the display surface of the display screen 20.

[0061] The middle frame 30 is located between the display 20 and the rear housing 40. The space between the middle frame 30 and the rear housing 40 creates an installation space for electronic components such as a printed circuit board (PCB), a battery, a receiver, a speaker, and a camera. The PCB can integrate electronic components such as the electronic device's main controller, storage unit, antenna module, and power management module. The battery can power the display 20, PCB, receiver, speaker, camera, and other electronic components.

[0062] In some embodiments, the electronic device 1 also includes a processor (center processing unit, CPU) chip, a dynamic random access memory (dynamic random access memory, DRAM) chip, a radio frequency chip, a radio frequency power amplifier (power amplifier, PA) chip, a system-on-a-chip (system on a chip, SOC), a power management chip (power management integrated circuits, PMIC), a storage chip (such as high bandwidth memory (HBM)), an audio processor chip, a touch screen control chip, NAND flash (flash memory), an image sensor chip and other chips arranged on the PCB. The PCB is used to carry the above chips and complete signal interaction with the above chips.

[0063] With the development of wireless power transmission (WPT) technology, wireless charging technology has gradually been introduced into smart electronic devices.

[0064] In some embodiments, the electronic device includes a second power coil, and the wireless charging device includes a first power coil. During wireless charging, a handshake protocol is implemented in which the first power coil sends a personal identification number (PIN) in real time to detect whether the second power coil is within its operating area. If the PIN code can close the loop, wireless charging begins. If the PIN code cannot close the loop, a waiting handshake is performed at a certain period and frequency.

[0065] In this solution, the wireless charging coil itself is mainly used to determine whether it is in the right position. Generally speaking, the best charging position is obtained first. When the second power coil is in the best charging position, the charging efficiency is the highest and the charging current is the best. Whether the second power coil (i.e., the electronic device) is in the best position is determined by judging whether the ideal charging efficiency and charging current are achieved. When it is not in the best position, the user is prompted with the relative direction of the best position relative to the current position, or the specific location of the best position is directly prompted to the user. The user can be prompted on the display screen, or by light, voice, vibration, etc.

[0066] 1B and 1C are schematic diagrams of an alignment situation provided in an embodiment of the present application.

[0067] However, if the first power coil and the second power coil are used to determine the alignment, first, a prompt message can only be sent to the user after the first power coil and the second power coil establish contact (handshake successfully). Secondly, the handshake can only be successful if the alignment is performed within the effective working area of ​​the first power coil and the second power coil, and it cannot exceed the effective working area of ​​the first power coil and the second power coil. As shown in Figure 1B, when the first power coil is outside the effective area of ​​the second power coil, the first power coil and the second power coil cannot shake hands. For example, the second power coil is located in the main screen area of ​​the electronic device 1, but the first power coil is located in the secondary screen area of ​​the electronic device 1. Or, for example, for multi-fold products, due to the diversity of folding forms, there is a certain form in which the effective area of ​​the second power coil of the electronic device is never aligned with the first power coil. As a result, the first power coil and the second power coil are never able to shake hands, and there will be no subsequent reminders. Furthermore, since the periodic PIN code is a kind of interference to the display, as shown in Figure 1C, when the first power coil is placed on the light-emitting side of the display screen 20, it will cause display abnormality (for example, water ripples, bright and dark lines flashing). However, when the first power coil is placed on the light-emitting side of the display screen 20 , the first power coil is also outside the effective area of ​​the second power coil, and there is no reminder.

[0068] Based on this, an embodiment of the present application provides a new means to identify whether the first power coil is located above the display screen 20, whether there is wireless charging interference, and whether the alignment is accurate. When the first power coil is detected, the display and other adjustments can be made to increase anti-interference or remind the user to move the wireless charging device away.

[0069] FIG2 is a diagram illustrating a coupling relationship between an electronic device and a first power coil according to an embodiment of the present application, and FIG3A is a diagram illustrating a touch sampling principle according to an embodiment of the present application.

[0070] An embodiment of the present application provides an electronic device 1 , as shown in FIG2 , the electronic device 1 includes a display screen 20 and a processor 50 .

[0071] The display screen 20 is used to display images, and the display screen 20 can be any of the above-mentioned display screens. The display screen 20 also has a touch function, and the display screen 20 can be any display screen with a touch function.

[0072] For example, the display screen 20 includes a touch panel driver integrated circuit (TPIC) and a plurality of touch sensors (TS) spaced apart. The plurality of touch sensors TS can be arranged in an array, for example. When the wireless charging device is close to the display screen 20, after the first power coil of the wireless charging device transmits a signal, the touch sensor TS is configured to receive the transmission signal from the first power coil of the wireless charging device and output a feedback signal. For example, the first power coil can form a coupling capacitor C with the touch sensor TS, and the touch sensor TS is configured to receive the transmission power of the first power coil through capacitive coupling with the first power coil.

[0073] For example, a touch sensor TS includes a touch detection electrode and a common electrode, which form a self-capacitor. The touch detection electrode and the finger form an external capacitor. The external capacitor and the self-capacitor of the touch detection electrode form a coupled electric field between the touch detection electrode and the finger. Changes in the external capacitor will change the self-capacitor. The touch point's location is calculated based on the change in capacitance at the touch point.

[0074] In some embodiments, the electronic device 1 further includes a screen protection layer and a middle frame. The screen protection layer is provided on the light-emitting side of the display screen 20 to protect the display screen 20. The middle frame is provided on the back of the display screen 20 to support the display screen 20. The electronic device 1 may also include other film layer structures. The electronic device 1 illustrated in the embodiments of the present application only illustrates a portion of the structure of the electronic device 1 and does not constitute a limitation on the electronic device provided in the embodiments of the present application.

[0075] The touch driver chip TPIC can be fixed to the middle frame, for example, as shown in FIG3A . The touch driver chip TPIC is coupled to at least one touch sensor TS and is configured to collect a feedback signal output by the at least one touch sensor TS and transmit the feedback signal to the processor 50. The feedback signal is used to indicate the relative position of the first power coil and the display screen 20. The feedback signal can also be used to indicate whether a touch object (e.g., a finger) is performing a touch operation on the display screen 20.

[0076] Alternatively, it can be understood that the touch sensor TS has a touch feedback function. The principle of the touch sensor TS implementing the touch feedback function is the same as the touch principle in the related art and will not be repeated here. On this basis, the touch sensor TS also has the function of interference feedback of the first power coil. The touch sensor TS is used to determine the alignment of the first power coil, rather than using the second power coil inside the electronic device 1 to determine the alignment of the first power coil.

[0077] For example, the touch driving chip TPIC receives feedback signals output by a plurality of touch sensors TS arranged in an array, collects the feedback signals, and outputs matrix space (rawdata) signals.

[0078] The present embodiment of the present application does not limit the manner in which the touch driver chip TPIC demodulates the feedback signal output by the touch sensor TS. The touch driver chip TPIC receives the analog signal output by the touch detection electrode and converts the analog signal into a digital signal for output. For example, the feedback signal can be decoupled by performing analog-to-digital conversion (ADC), analog filtering (FAE), and self-capacitance detection. The structures of touch driver chips TPICs in related technologies are all applicable to the present embodiment.

[0079] FIG3B is a waveform diagram of a power saving detection (idle) mode provided in an embodiment of the present application; FIG3C is a waveform diagram of a precise coordinate detection (active) mode provided in an embodiment of the present application.

[0080] For example, the touch driver chip TPIC uses idle mode to collect feedback signals. As shown in FIG3B , the touch driver chip TPIC quickly collects the self-capacitance and mutual-capacitance feedback signals of the touch sensor TS in a short time to output a matrix space signal.

[0081] Alternatively, for example, the touch driver chip TPIC uses active mode to collect feedback signals. As shown in FIG3C , the touch driver chip TPIC first collects the self-capacitance feedback signal of the touch sensor TS, and then repeatedly collects the mutual-capacitance feedback signal of the touch sensor TS to output a matrix spatial signal.

[0082] FIG4 is an equivalent circuit diagram of a first power coil and an electronic device provided in an embodiment of the present application.

[0083] As shown in Figure 4, a signal path can be formed between the first power coil and the electronic device 1. One end of the first power coil is equivalent to ground GND, and the other end forms a coupling capacitor C with the touch sensor TS. The signal from the first power coil is coupled to the touch sensor TS through the coupling capacitor C, and then transmitted to the touch driver chip TPIC through the touch sensor TS. The wiring between the touch sensor TS and the touch driver chip TPIC can be equivalent to a resistor R.

[0084] FIG5A is a transmission power waveform diagram of a first power coil provided in an embodiment of the present application.

[0085] As shown in FIG5A , the first power coil periodically transmits a frequency waveform (detection signal). If a wireless charging receiving device (the second power coil in the electronic device 1 ) is detected, the charging handshake is completed. If no wireless charging receiving device is detected, the frequency waveform is continuously transmitted.

[0086] As shown in Figure 4, when the first power coil is located above the display screen 20, the first power coil and the display screen 20 form an emission detection circuit. At this time, the touch driver chip TPIC periodically detects the signal emitted by the first power coil and outputs a matrix space signal. When the signal emitted by the first power coil is coupled to the self-inductance capacitance of the touch detection electrode through the coupling capacitor C between the touch detection electrode and the touch sensor TS. The touch driver chip TPIC demodulates the signal on the touch detection electrode, converts the analog signal into a digital signal, and outputs a matrix space signal. Since the frequency band of the signal emitted by the first power coil is quite different from the frequency band of the signal generated by the touch, the processor 50 can determine whether the first power coil is located above the display screen 20 by the frequency and size corresponding to the matrix space signal.

[0087] 5B and 5C are a timing diagram of a first power coil and a timing diagram of a touch driver chip provided in an embodiment of the present application.

[0088] In some embodiments, the processor 50 further obtains the time period of the first power coil transmitting the signal in response to the feedback signal, as shown in FIG5B , and controls the touch driver chip DDIC to collect the feedback signal so that the time period intersects with the time period of the first power coil transmitting the signal.

[0089] For example, in FIG5B , the time period (coding width) during which the first power coil transmits the signal is detected to be H, the time period during which the touch driver chip TPIC collects the feedback signal is x, and the period during which the feedback signal is collected is d. The time period x during which the touch driver chip TPIC collects the feedback signal intersects with the time period H during which the first power coil transmits the signal, but the relationship between the period during which the touch driver chip TPIC collects the feedback signal and the period during which the first power coil transmits the signal is not restrictive. For example, the period during which the touch driver chip TPIC collects the feedback signal may be less than the period during which the first power coil transmits the signal, or it may be understood that the frequency at which the touch driver chip TPIC collects the feedback signal is greater than the frequency at which the first power coil transmits the signal.

[0090] For example, the touch driver chip DDIC is controlled to frequently collect feedback signals, and only one collection period x intersects with the coding period H. Each coding period H may intersect with one collection period x, or some coding periods H may intersect with the collection period x.

[0091] By controlling the intersection of the period x of the feedback signal collected by the touch control driving chip TPIC and the period H of the signal transmitted by the first power coil, at least one of the feedback signals collected by the touch control driving chip TPIC can represent the relative position of the first power coil and the display screen 20, while meeting the minimum detection requirements and reducing power consumption.

[0092] In some embodiments, as shown in FIG. 5C, at least one period of the feedback signal collected by the touch control driving chip TPIC is located within the period of the signal transmitted by the first power coil.

[0093] For example, the frequency of the signal transmitted by the first power coil is F = 0.747 hz, the period T = 1.339 s, and the coding width H = 6.6 ms. The period of the feedback signal collected by the touch control driving chip TPIC is x, and the period is d. The touch control driving chip TPIC requires a minimum width of x ms (x ms < H ms) for each detection. Assuming the period is d ms, then, if the touch control driving chip TPIC is required to be able to detect each signal transmitted by the first power coil, the detection period x and the period d need to satisfy H = d + 2x.

[0094] Considering the worst case, within the coding width H of the signal transmitted by the first power coil, there is just one detection that is not completed, that is, a detection time of y < x ms, and at this time, another detection period x is just sufficient; then it is necessary to satisfy: H - y = d + x, that is, H = d + x + y. Then, if H = d + 2x, it is certain that the touch control driving chip TPIC can detect each signal transmitted by the first power coil. If x = 0.15 us, then d = 6.6 ms - 2 * 0.15 = 6.3 ms, and the frequency t is 159 hz.

[0095] By controlling that there is a period within the period of the feedback signal collected by the touch control driving chip TPIC that is located within the period of the signal transmitted by the first power coil, it is possible to achieve synchronization between sampling and the coding of the first power coil, and improve the problems of inaccurate detection and undetectability with lower power consumption.

[0096] The processor 50 is, for example, an application processor (AP). The processor 50 can be fixed to the middle frame and coupled to the touch control driving chip TPIC.

[0097] In some embodiments, the processor 50 analyzes the matrix space signal output by the touch control driving chip TPIC, finds the row and column corresponding to the maximum point, and determines the position of the first power coil. This principle is simple.

[0098] For example, the processor 50 first determines whether there is interference according to the matrix space signal, further determines whether the interference is generated by the first power coil, and then determines the position of the first power coil.

[0099] Or for example, the processor 50 directly determines whether the first power coil generates interference based on the matrix space signal, and determines the position of the first power coil.

[0100] FIG6A is a schematic diagram of confirming the position of a first power coil provided in an embodiment of the present application.

[0101] In other embodiments, the processor 50 accurately determines the position of the first power coil through a sag algorithm.

[0102] For example, as shown in FIG6A , first find the column i corresponding to the largest point in the matrix space signal and the matrix value R corresponding to the point i As shown in formula (1), by taking the weighted average of several columns (e.g., sampling three columns) centered around column i, we can obtain the precise horizontal coordinate. In formula (1), K is the coordinate coefficient.

[0103] Similarly, first find the column j corresponding to the largest point in the matrix space signal, and the matrix value R corresponding to the point j As shown in formula (12), by taking the weighted average of several columns centered on column j (for example, sampling three columns), we can obtain the precise horizontal coordinate. In formula (2), K is the coordinate coefficient.

[0104] By combining the first direction X and the second direction Y, the specific coordinates of the first power coil can be obtained.

[0105] That is, the coupling capacitance between the first power coil and the touch sensor TS is converted into a digital matrix value R, and then the coordinates in the X and Y directions are obtained using the midpoint algorithm, that is, the specific coordinate values ​​of the first power coil on the display screen 20 are obtained.

[0106] The electronic device 1 provided in the embodiment of the present application uses the touch detection technology corresponding to the display screen 20 to identify whether the first power coil is located above the display screen 20 along the third direction Z (thickness direction) and the pixel position of the first power coil on the display screen 20 along the first direction X and the second direction Y to determine the relative position of the first power coil and the display screen 20 (the absolute position of the first power coil itself). The processor 50 adjusts the display of the display screen 20 in response to the feedback signal representing the position information to provide feedback on the detection result. Based on this, the detection of the position of the first power coil does not require the participation of the second power coil in the electronic device 1. When the first power coil is outside the area that can be collected by the second power coil, the position of the first power coil can still be detected. It is not limited by the prerequisite for the successful handshake of the first power coil and the second power coil, and is not limited by the effective detection area of ​​the second power coil. The detection result is more accurate.

[0107] The processor 50 also adjusts the display and / or touch of the display screen 20 in response to the feedback signal. That is, the processor 50 analyzes the detection result of the touch driver chip TPIC and makes control matching the detection result to control the display screen 20 to present the detection result.

[0108] For example, the processor 50 determines whether the feedback signal is a charging interference signal or a touch signal based on the matrix space signal output by the touch driver chip TPIC. For example, when the processor 50 determines that the feedback signal is a touch signal, it outputs a touch control signal based on the touch signal, and the processor 50 controls the display screen 20 to display touch feedback. When the processor 50 determines that the feedback signal is a charging interference signal, the processor 50 does not output a touch control signal, and the processor 50 controls the display screen 20 to display interference feedback. The feedback of the electronic device 1 to the touch signal can be the same as in the related art, and the feedback of the electronic device 1 to the charging interference signal can be any feedback in the related art, and the embodiments of the present application are not limited to this.

[0109] FIG. 6B is a schematic diagram of a touch signal determination process according to an embodiment of the present application.

[0110] For example, as shown in FIG6B , the touch driver chip TPIC detects feedback signals in two modes: idle mode and active mode. When no object approaches the display screen 20, the touch driver chip TPIC is in idle mode. When an object approaches the display screen 20, the touch driver chip TPIC switches from idle mode to active mode. The processor 50 analyzes the matrix space signal output by the touch driver chip TPIC to determine whether the matrix space signal exhibits large, chaotic fluctuations. If the matrix space signal exhibits large fluctuations that are significantly different from those corresponding to a conventional touch signal, it is determined to be a charging interference signal, and the processor 50 does not output a touch control signal. If the matrix space signal does not exhibit large fluctuations, it is determined to be a touch signal, and the processor 50 outputs a touch control signal.

[0111] By having the processor 50 determine whether the feedback signal is a touch signal, the problem of the processor 50 mistakenly feeding back an interference signal as a touch signal can be improved, and the probability of erroneous operation ("ghost hand") of the electronic device 1 can be reduced.

[0112] Figure 7A is a schematic diagram of coupling interference of a first power coil of a pixel circuit provided in an embodiment of the present application, Figure 7B is a driving timing diagram of a pixel circuit provided in an embodiment of the present application; Figure 7C is a schematic diagram of a display abnormality provided in an embodiment of the present application.

[0113] For any of the above-mentioned display screens 20, the display screen 20 includes an active display area (AA) and a non-display area located around the active display area. The active display area is used to display an image, and the active display area includes a plurality of sub-pixels (SP). For example, the plurality of sub-pixels are arranged in a matrix form into multiple rows and columns. A pixel circuit is provided in each sub-pixel, and the active display area of ​​the display screen 20 is provided with a plurality of pixel circuits, and the plurality of pixel circuits are arranged into multiple rows and columns.

[0114] For example, the pixel circuit 11 includes a first reset circuit 111, a second reset circuit 112, a third reset circuit 113, a write and threshold compensation circuit 114, a light emitting control circuit 115, and a light emitting device 116. The write and threshold compensation circuit 114 includes a driving transistor (driving thin film transistor, DTFT) T1, a second transistor T2, a third transistor T3, and a storage capacitor Cst. The first reset circuit 111 includes a fourth transistor T4, the second reset circuit 112 includes an eighth transistor T8, the third reset circuit 113 includes a seventh transistor T7, and the light emitting control circuit 115 includes a fifth transistor T5 and a sixth transistor T6.

[0115] The control electrode of the driving transistor T1 is electrically connected to the first node N1, the first electrode of the driving transistor T1 is electrically connected to the second node N2, and the second electrode of the driving transistor T1 is electrically connected to the first electrode of the third transistor T3. The control electrode of the second transistor T2 is electrically connected to the fourth control signal terminal P4, the first electrode of the second transistor T2 is electrically connected to the data voltage terminal Vdata, and the second electrode of the second transistor T2 is electrically connected to the second node N2. The control electrode of the third transistor T3 is electrically connected to the fifth control signal terminal P5, and the second electrode of the third transistor T3 is electrically connected to the first node N1. One end of the storage capacitor Cst is electrically connected to the first node N1, and the other end of the storage capacitor Cst is coupled to the first power supply voltage terminal ELVDD. The control electrode of the fourth transistor T4 is electrically connected to the first control signal terminal P1, the first electrode of the fourth transistor T4 is electrically connected to the first reset voltage terminal Vref1, and the second electrode of the fourth transistor T4 is electrically connected to the first node N1. The control electrode of the seventh transistor T7 is electrically connected to the third control signal terminal P3, the first electrode of the seventh transistor T7 is electrically connected to the third reset voltage terminal Vref3, and the second electrode of the seventh transistor T7 is electrically connected to the anode of the light-emitting device 116. The control electrode of the eighth transistor T8 is electrically connected to the second control signal terminal P2, the first electrode of the eighth transistor T8 is electrically connected to the second reset voltage terminal Vref2, and the second electrode of the eighth transistor T8 is electrically connected to the second node N2. The control electrode of the fifth transistor T5 is electrically connected to the emission control signal terminal EM, the first electrode of the fifth transistor T5 is electrically connected to the first power supply voltage terminal ELVDD, and the second electrode of the fifth transistor T5 is electrically connected to the second node N2. The control electrode of the sixth transistor T6 is electrically connected to the emission control signal terminal EM, the first electrode of the sixth transistor T6 is electrically connected to the second electrode of the driving transistor T1, and the second electrode of the sixth transistor T6 is electrically connected to the anode of the light-emitting device 116.

[0116] As shown in FIG. 7B , the light emitting process of the pixel circuit 11 in one image frame can be divided into an initialization phase t1 , a data writing and compensation phase t2 , a light emitting phase t3 , and an anode reset phase t4 .

[0117] In the initialization phase t1:

[0118] The first control signal at the first control signal terminal P1 changes from a low level to a high level, and then from a high level to a low level. Consequently, the fourth transistor T4 changes from off to on, and then from on to off. The second control signal at the second control signal terminal P2 changes from a high level to a low level, and then from a low level to a high level. Consequently, the eighth transistor T8 changes from off to on, and then from on to off.

[0119] The fifth control signal of the fifth control signal terminal P5 maintains a low level, the fourth control signal of the fourth control signal terminal P4 and the light-emitting control signal of the light-emitting control signal terminal EM all maintain a high level, therefore, the seventh transistor T7, the second transistor T2, the third transistor T3, the fifth transistor T5 and the sixth transistor T6 all remain in the off state.

[0120] In the data writing and compensation phase t2:

[0121] The fourth control signal at the fourth control signal terminal P4 changes from a high level to a low level, and then from a low level to a high level. Consequently, the second transistor T2 changes from off to on, and then from on to off. The fifth control signal at the fifth control signal terminal P5 changes from a low level to a high level, and then from a high level to a low level. Consequently, the third transistor T3 changes from off to on, and then from on to off.

[0122] The second control signal at the second control signal terminal P2, the third control signal at the third control signal terminal P3, and the light-emitting control signal at the light-emitting control signal terminal EM all maintain a high level, and the first control signal at the first control signal terminal P1 maintains a low level. Therefore, the seventh transistor T7, the eighth transistor T8, the fifth transistor T5, the sixth transistor T6, and the fourth transistor T4 all remain in the off state.

[0123] During the data writing and compensation phase t2, the second transistor T2, the third transistor T3, and the driving transistor T1 are turned on, storing the data voltage at the data voltage terminal Vdata in the storage capacitor Cst, completing the data voltage writing. This also compensates for the threshold voltage of the driving transistor T1. The threshold voltage compensation process of the driving transistor T1 can be considered as the process of the driving transistor T1 switching from an on state to an off state.

[0124] In the lighting phase t3:

[0125] The light emitting control signal changes from high level to low level, and then changes from low level to high level. Thus, the sixth transistor T6 and the fifth transistor T5 change from off to on, and then from on to off.

[0126] The first control signal at the first control signal terminal P1 and the fifth control signal at the fifth control signal terminal P5 remain at a low level, and the fourth transistor T4 and the third transistor T3 both remain in an off state. The second control signal at the second control signal terminal P2, the third control signal at the third control signal terminal P3, and the fourth control signal at the fourth control signal terminal P4 each remain at a high level, and the seventh transistor T7, the eighth transistor T8, and the second transistor T2 all remain in an off state.

[0127] In the light emitting stage t3 , the fifth transistor T5 , the driving transistor T1 and the sixth transistor T6 are turned on respectively to transmit the driving current to the light emitting device 116 , and the light emitting device 116 emits light under the driving current.

[0128] Anode reset phase t:

[0129] The third control signal of the third control signal terminal P3 changes from high level to low level and then changes from low level to high level. Thus, the seventh transistor T7 changes from off to on and then from on to off.

[0130] The first control signal at the first control signal terminal P1 and the fifth control signal at the fifth control signal terminal P5 always maintain a low level, the second control signal at the second control signal terminal P2, the fourth control signal at the fourth control signal terminal P4, and the light-emitting control signal at the light-emitting control signal terminal EM always maintain a high level. The third transistor T3, the fourth transistor T4, the second transistor T2, the fifth transistor T5, the sixth transistor T6, and the eighth transistor T8 all remain in the off state.

[0131] The first power coil is placed above the display screen 20, which will interfere with the display of the display screen 20. When the first power coil is located above the display screen 20, the coupling interference brought by the first power coil will affect the potential at the gate of the driving transistor T1 (the first node N1). At this time, if the original display strategy is still followed, under its original timing drive, as shown in Figure 7C, it will cause water ripples and other defects. Moreover, when the picture is not refreshed, it will automatically enter low refresh mode (such as screen-off display mode). After entering low refresh mode, the display anti-interference ability is further reduced, and the display abnormality will be more obvious.

[0132] In some embodiments, the processor 50 adjusts the display state of the display screen 20 in response to the feedback signal to improve the effect of the first power coil on the display.

[0133] For example, when the processor 50 detects that there is a first power coil above the display screen 20 , the processor 50 adjusts the display state of the display screen 20 in response to the feedback signal.

[0134] Or for example, the processor 50 is used to adjust the display state of the display screen 20 when the relative position of the first power coil and the display screen 20 indicates that the first power coil is located within a set distance from the light-emitting side of the display screen 20.

[0135] When the first power coil is far away from the display screen 20, the effect on the display may be minimal, and there is no need to adjust the display state of the display screen 20. By adding the distance determination step, when the first power coil has little effect on the display, there is no need to adjust the display state of the display screen 20, thereby reducing power consumption.

[0136] 2 , the electronic device further includes a display driver integrated circuit (DDIC), which adjusts the display state of the display screen 20 under the control of the processor 50. For example, the display driver chip DDIC is coupled to the processor 50 and the display screen 20, respectively.

[0137] Water ripples are a display effect that can be achieved by shielding, improving the charging rate, avoiding sensitive frequency points, changing display conditions, and other aspects to avoid interference time. The following is a schematic explanation of the method for adjusting the display state of the display screen 20 in an embodiment of the present application.

[0138] FIG8 is a grayscale curve diagram provided in an embodiment of the present application.

[0139] In a first implementation, the processor 50 controls the display driver chip DDIC to increase the display brightness of the display screen 20 .

[0140] For example, as shown in FIG8 , the initial display brightness of the display screen 20 is at point A. When the processor 50 determines that the first power coil is above the display screen 20 and a possible display abnormality is detected, it sends a control signal to the display driver chip DDIC to increase the display brightness of the display screen 20 to point B, thereby increasing the grayscale brightness of the display screen 20. When it is determined that the first power coil above the display screen 20 has disappeared, the processor 50 sends a control signal to the display driver chip DDIC to return the display brightness of the display screen 20 to point A, thereby reducing the grayscale brightness of the display screen 20.

[0141] For example, the grayscale brightness of the display screen 20 is adjusted by changing the duty cycle and frequency of the light emitting control signal at the light emitting control signal terminal EM.

[0142] In the high-brightness mode, the water ripples are not easily visible or disappear. Therefore, increasing the display brightness of the display screen 20 can improve the display interference problem caused by the first power coil.

[0143] FIG9A is a schematic diagram of refresh rates in different display modes provided in an embodiment of the present application, and FIG9B is a prompt schematic diagram of a display screen provided in an embodiment of the present application.

[0144] In a second implementation, the processor 50 controls the display driver chip DDIC to drive the display screen 20 to exit the always on display (AOD) mode or not enter the always on display mode.

[0145] For example, as shown in FIG9A , the display screen 20 is in normal mode (Nom) and displays at a high refresh rate. When the first power coil is detected above the display screen 20, the processor 50 sends a control signal to the display driver chip DDIC to drive the display screen 20 to always display at a high refresh rate (for example, a refresh rate greater than 30Hz) and not enter the screen-off display mode. When it is determined that the first power coil above the display screen 20 disappears, the processor 50 can send a control signal to the display driver chip DDIC to drive the display screen 20 to enter the screen-off display mode according to the application scenario.

[0146] Alternatively, as shown in FIG9A , the display screen 20 has entered the off-screen display mode and displays at a low refresh rate. When the first power coil is detected above the display screen 20, the processor 50 sends a control signal to the display driver chip DDIC to drive the display screen 20 to display at a high refresh rate and exit the off-screen display mode. When it is determined that the first power coil above the display screen 20 has disappeared, the processor 50 can send a control signal to the display driver chip DDIC to drive the display screen 20 into the off-screen display mode, depending on the application scenario.

[0147] In some embodiments, when exiting the screen-off display mode, the processor 50 controls the display driver chip DDIC to drive the display screen 20 to directly exit the screen-off display mode.

[0148] In other embodiments, as shown in FIG9B , when exiting the screen-off display mode, the processor 50 controls the display driver chip DDIC to drive the display screen 20 to display a prompt message, reminding the user that the first power coil is located above the display screen and exiting the screen-off display mode. The display screen 20 exits the screen-off display mode after (or simultaneously with) displaying the prompt message.

[0149] The present embodiment of the present application does not limit the refresh rate of the display screen 20 in the screen-off display mode. Different electronic devices 1 can set different refresh rates as the refresh rate in the screen-off display mode. For example, in the screen-off display mode, the refresh rate of the display screen 20 is less than 30Hz. For example, whether the display screen 20 has entered the screen-off display mode can be determined by the refresh rate, the displayed image, etc.

[0150] In the low refresh rate display state, the water ripple phenomenon of the display screen 20 is more obvious. After increasing the refresh rate of the display screen 20, the display effect of the display screen 20 can be improved.

[0151] FIG10 is a driving timing diagram of a display screen provided in an embodiment of the present application.

[0152] In a third implementation, the processor 50 controls the display driver chip DDIC to output a data write signal to the display screen 20 for a duration greater than a set value.

[0153] For example, in the data writing and compensation phase t2, the second transistor T2, the third transistor T3 and the driving transistor T1 store the data voltage of the data voltage terminal Vdata in the storage capacitor Cst, change the capacitance of the storage capacitor Cst, and complete the writing of the data voltage. As shown in Figure 10, when it is detected that there is a first power coil above the display screen 20, the processor 50 sends a control signal to the display driver chip DDIC to control the duration of the data write signal output by the display driver chip DDIC to the display screen 20 to be greater than the default set value. That is, the duration of the second transistor T2, the third transistor T3 and the driving transistor T1 being turned on is greater than the set value to extend the time for charging the gate of the driving transistor T1. When it is determined that the first power coil above the display screen 20 disappears, the control processor 50 sends a control signal to the display driver chip DDIC to control the duration of the data write signal output by the display driver chip DDIC to the display screen 20 to restore the default value.

[0154] For example, while the first power coil is located above the display screen 20 , the duration of the data writing signal output by the display driver chip DDIC to each row of pixels in the display screen 20 is greater than the set value.

[0155] Or, for example, while the first power coil is located above the display screen 20 , the duration of the data writing signal output by the display driver chip DDIC to some rows of pixels in the display screen 20 is greater than the set value.

[0156] Because the first power coil affects the potential of the drive transistor gate, interfering with the charging effect on the drive transistor gate, by extending the duration of the data write signal, the charging time is extended, improving the stability of the capacitor Cd in the drive circuit, thereby reducing display interference.

[0157] FIG11 is a timing diagram of a first power coil and a driving timing diagram of a display screen provided in an embodiment of the present application.

[0158] In a fourth implementation, as shown in FIG11 , the processor 50 controls the display driver chip DDIC to output a data write signal to the display screen 20 so that the period does not overlap with the period when the first power coil transmits the signal.

[0159] For example, as shown in FIG11 , during the period when the first power coil transmits a signal (or is called coding), the touch driver chip TPIC collects feedback signals from the display screen 20, but the display driver chip DDIC does not send a data write signal to the display screen 20. When the first power coil is not transmitting a signal, the display driver chip DDIC sends a data write signal to the display screen 20. That is, the period when the first power coil transmits a signal and the period when the display driver chip DDIC sends a data write signal to the display screen 20 are exactly staggered.

[0160] For example, the electronic device 1 may continuously detect whether there is a first power coil above the display screen 20. When the first power coil is detected above the display screen 20, the electronic device 1 detects whether the first power coil sends a signal. When the first power coil sends a signal, the display driver chip DDIC stops sending data write signals to the display screen 20.

[0161] Alternatively, for example, the electronic device 1 repeatedly detects whether the first power coil sends a signal and summarizes the pattern of the first power coil sending the signal. The electronic device 1 then adjusts the timing of the display driver chip DDIC sending the data write signal to the display screen 20 so that the data write signal is sent during a period that coincides with the period when the first power coil sends the signal.

[0162] By making the period when the display driver chip DDIC outputs the data write signal to the display screen 20 not intersect with the period when the first power coil transmits the signal, the interference of the charging effect of the first power coil on the gate of the driving transistor can be avoided, thereby reducing display interference.

[0163] 12A-12C are schematic diagrams of a display screen outputting prompt information provided in an embodiment of the present application.

[0164] In other embodiments, the processor 50 adjusts the display screen 20 in response to the feedback signal. Based on the detected actual position of the first power coil on the display screen 20, combined with the folded state and screen status of the electronic device 1, the processor 50 prompts the user to place the wireless charging device in a charging area supported by the electronic device 1, thereby guiding the user to move the device accurately and improving the user experience.

[0165] For example, the processor 50 generates a prompt signal in response to the feedback signal, and the display screen 20 displays the prompt information. For example, the prompt information includes one or more of the following: the relative position of the first power coil and the display screen 20, the relative position of the first power coil and the second power coil of the electronic device 1, the movement direction of the first power coil, the movement distance of the first power coil, the movement direction of the electronic device 1, the movement distance of the electronic device 1, the position of the second power coil, and removing the interference object.

[0166] For example, when the position of the first power coil relative to the display screen 20 is detected, the relative position of the first power coil and the second power coil can be obtained. The processor 50 generates a prompt message to remind the user to accurately move the first power coil. In Figure 12A, it is detected that the first power coil is located at the upper left side of the screen, and the user is reminded to move the first power coil to the lower right by XX cm. The prompt information includes the relative position of the first power coil and the display screen 20, the moving direction of the first power coil, and the moving distance of the first power coil. In Figure 12B, it is detected that the first power coil is located at the lower left side of the screen, and the user is reminded to move the first power coil to the upper right by XX cm. In Figure 12C, it is detected that the first power coil is located on the left side of the screen, and the user is reminded to move the first power coil to the right by XX cm.

[0167] The prompt information can be displayed in the form of text or in the form of a pattern. The drawings in the embodiments of the present application are only for illustration and do not constitute any limitation.

[0168] The embodiment of the present application further provides a method for controlling a display screen, which can be applied to the above-mentioned electronic device 1. The method for controlling a display screen includes:

[0169] When the wireless charging device approaches the display screen 20, the touch sensor TS receives the transmission signal of the first power coil of the wireless charging device and outputs a feedback signal; the touch driver chip TPIC collects the feedback signal output by at least one touch sensor TS and sends the feedback signal to the processor 50. The feedback signal is used to indicate the relative position of the first power coil and the display screen 20; the processor 50 adjusts the display and / or touch of the display screen 20 in response to the feedback signal.

[0170] In some embodiments, the method for controlling a display screen includes: responding to a feedback signal, determining whether the feedback signal is a charging interference signal or a touch signal, and outputting a control signal according to the determination result to adjust the display or touch of the display screen 13 .

[0171] For example, adjusting the display of the display screen 13 includes: adjusting the display state of the display screen 13 .

[0172] Alternatively, for example, adjusting the display of the display screen 13 includes: adjusting the display screen of the display screen 13 .

[0173] For adjusting the display state and the display screen of the display screen 13, please refer to the above-mentioned related descriptions, which will not be repeated here.

[0174] An embodiment of the present application further provides an electronic device, including a memory and a processor 50, wherein the memory stores a computer program, and the processor 50 executes the computer program so that the electronic device 1 implements the above-mentioned display screen control method when executing the computer program.

[0175] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An electronic device, characterized in that, The electronic device includes a display screen and a processor. The display screen includes a touch drive chip and a plurality of spaced-apart touch sensors; when a wireless charging device approaches the display screen, the touch sensors are used to receive the transmission signal of the first power coil of the wireless charging device and output a feedback signal. The touch drive chip is used to collect the feedback signals output by at least one of the touch sensors and send the feedback signals to the processor, and the feedback signals are used to indicate the relative position between the first power coil and the display screen. The processor, in response to the feedback signal, adjusts the display and / or touch control of the display screen.

2. The electronic device according to claim 1, characterized in that The adjustment of the display of the display screen includes: adjusting the display state of the display screen.

3. The electronic device according to claim 2, wherein The electronic device further includes a display drive chip, and the display drive chip is coupled to the processor. The adjustment of the display state of the display screen includes: controlling the display drive chip to increase the display brightness of the display screen.

4. The electronic device according to claim 2, wherein The electronic device further includes a display drive chip, and the display drive chip is coupled to the processor. The adjustment of the display state of the display screen includes: controlling the display drive chip to drive the display screen to exit the screen-off display mode or not enter the screen-off display mode.

5. The electronic device according to claim 2, characterized in that, The electronic device further includes a display drive chip, and the display drive chip is coupled to the processor. The adjustment of the display state of the display screen includes: controlling the display drive chip to make the duration of the data write signal output to the display screen greater than a set value.

6. The electronic device according to claim 2, wherein The electronic device further includes a display drive chip, and the display drive chip is coupled to the processor. The adjustment of the display state of the display screen includes: controlling the display drive chip to make the period of the data write signal output to the display screen not intersect with the period of the transmission signal of the first power coil.

7. The electronic device according to any one of claims 2-6, characterized in that, The processor, in response to the feedback signal, adjusts the display of the display screen, including: when the relative position indicates that the first power coil is within a set distance from the light-emitting side of the display screen, the processor adjusts the display state of the display screen.

8. The electronic device according to claim 1, wherein The adjustment of the display of the display screen includes: adjusting the display picture of the display screen.

9. The electronic device according to claim 8, wherein Adjusting the display picture of the display screen includes: generating a prompt message, where the prompt message includes one or more of the relative position between the first power coil and the display screen, the relative position between the first power coil and the second power coil of the electronic device, the moving direction of the first power coil, the moving distance of the first power coil, the moving direction of the electronic device, the moving distance of the electronic device, the position of the second power coil, and removing interfering objects. The display screen is used to display the prompt message.

10. The electronic device according to any one of claims 1-9, characterized in that, The processor, in response to the feedback signal, includes: the processor determines whether the feedback signal is a charging interference signal or a touch signal.

11. The electronic device according to claim 10, wherein When the processor determines that the feedback signal is a charging interference signal, it does not output a touch control signal.

12. The electronic device according to claim 10, wherein When the processor determines that the feedback signal is a touch signal, it outputs a touch control signal according to the touch signal.

13. The electronic device according to any one of claims 1-12, characterized in that, The processor also responds to the feedback signal, obtains the time period during which the first power coil emits a signal, and controls the touch driving chip such that the time period for collecting the feedback signal intersects with the time period during which the first power coil emits a signal.

14. The electronic device according to claim 13, wherein Controlling the touch driving chip such that the time period for collecting the feedback signal intersects with the time period during which the first power coil emits a signal includes: controlling the time period for the touch driving chip to collect the feedback signal to be within the time period during which the first power coil emits a signal.

15. A control method for a display screen, characterized in that, Applied to an electronic device; the electronic device includes a display screen and a processor; the display screen includes a touch driving chip and a plurality of spaced-apart touch sensors; The control method includes: When a wireless charging device approaches the display screen, the touch sensors receive the emission signal of the first power coil of the wireless charging device and output a feedback signal; The touch driving chip collects the feedback signal output by at least one of the touch sensors, sends the feedback signal to the processor, and the feedback signal is used to indicate the relative position of the first power coil and the display screen; The processor responds to the feedback signal and adjusts the display and / or touch function of the display screen.

16. The control method of the display screen according to claim 15, wherein, Adjusting the display of the display screen includes: adjusting the display state of the display screen.

17. The control method of the display screen according to claim 15, wherein Adjusting the display of the display screen includes: adjusting the display picture of the display screen.

18. The control method of the display screen according to any one of claims 15-17, characterized in that, The processor's response to the feedback signal includes: the processor determines whether the feedback signal is a charging interference signal or a touch signal.

19. An electronic device, characterized in that, Including a memory and a processor, the memory stores a computer program, and the processor executes the computer program such that the electronic device executes the control method for the display screen according to any one of claims 15 - 18.

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