Electronic equipment and display screen control method

Abstract

The embodiment of the invention provides an electronic device and a display screen control method, relates to the technical field of wireless charging, and is used for improving the judgment accuracy of the relative position of a wireless charging device and the electronic device. The electronic equipment comprises a display screen and a processor, the display screen comprises a touch driving chip and a plurality of touch sensors arranged at intervals, the touch sensors collect emission signals of the wireless charging power coil, and the touch driving chip feeds back collection results to the processor. And the processor judges whether a touch operation or a wireless charging power coil exists above the display screen according to an acquisition result of the display screen. When the position of the wireless charging power coil is detected, a power coil in the electronic equipment does not need to participate, and when the wireless charging power coil is located outside an area which can be collected by the power coil of the electronic equipment, the display screen can still detect the position of the wireless charging power coil; and the judgment accuracy of the relative position of the wireless charging equipment and the electronic equipment is higher.

Description

Technical Field

[0001] This application relates to the field of wireless charging technologies, and in particular, to an electronic device and a control method for a display screen. Background Art

[0002] Wireless power transmission (WPT) is a technology that transfers electrical energy through a coupled electromagnetic field to charge a device to be charged. Compared with traditional contact charging, wireless charging has been widely used due to its advantages such as convenience of use, no risk of spark and electric shock, no mechanical wear, adaptability to various harsh environments and weather conditions, ease of implementing unattended automatic charging and mobile charging.

[0003] Currently, the 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 to be charged, and then can judge the alignment situation of the first power coil and the second power coil and give a prompt. If the first power coil and the second power coil do not establish a connection, it is impossible to judge the alignment situation and perform subsequent operations. However, whether the first power coil and the second power coil can establish a connection is interfered by many factors such as their alignment degree and environment, resulting in frequent difficulty in judging or misjudging the relative positions of the first power coil and the second power coil. Summary of the Invention

[0004] An embodiment of this application provides an electronic device and a control method for a display screen, which are used to improve the accuracy of judging the relative position between a wireless charging device and a device to be charged.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] In a first aspect of an embodiment of this application, an electronic device is provided, including: a display screen and a processor. The display screen includes a touch drive chip and a plurality of touch sensors arranged at intervals; 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 touch sensor, 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 adjusts the display and / or touch of the display screen in response to the feedback signal.

[0007] The electronic device provided by 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 in the thickness direction and the pixel positions of the first power coil on the display screen in the length and width directions, so as 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 characterizing the position information to give 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 located outside the area that the second power coil can collect, the position of the first power coil can still be detected. It is not restricted by the prerequisite for successful handshaking between the first power coil and the second power coil, nor by the effective detection area of the second power coil, and the judgment accuracy of the relative position between the wireless charging device and the electronic device is higher.

[0008] In a possible implementation manner, adjusting the display of the display screen includes: adjusting the display state of the display screen to improve the influence of the first power coil on the display.

[0009] In a possible implementation manner, the electronic device further includes a display driver chip, and the display driver chip is 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 the high-brightness mode, the water ripples are not easily found or disappear. Therefore, increasing the display brightness of the display screen can improve the problem of display interference caused by the first power coil.

[0010] In a possible implementation manner, the electronic device further includes a display driver chip, and the display driver chip is 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 the screen-off display mode or not enter the screen-off display mode. In the low-refresh-rate display state, the water ripple phenomenon of the display screen is more obvious. After increasing the refresh rate of the display screen, the display effect of the display screen can be improved.

[0011] In a possible implementation manner, the electronic device further includes a display driver chip, and the display driver chip is coupled to the processor; adjusting the display state of the display screen includes: controlling the display driver chip to output a data write signal to the display screen for a duration greater than a set value. Since the first power coil affects the potential of the gate of the driving transistor and interferes with the charging effect of the gate of the driving transistor. By extending the duration of the data write signal, the charging time is extended, and the stability of the capacitor C in the driving circuit is improved, thereby reducing the display interference.

[0012] In a possible implementation, the electronic device further includes a display driver chip, and the display driver chip is coupled to the processor; adjusting the display state of the display screen includes: controlling the time period when the display driver chip outputs a data writing signal to the display screen and the time period when the first power coil emits a signal do not intersect. By making the time period when the display driver chip outputs a data writing signal to the display screen and the time period when the first power coil emits a signal do not intersect, the interference of the first power coil on the charging effect of the driving transistor gate can be avoided, thereby reducing display interference.

[0013] In a 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 on the light-emitting side of the display screen. When the first power coil is far from the display screen, the impact on the display may be negligible, so there is no need to adjust the display state of the display screen. By adding a distance judgment step, when the impact of the first power coil on the display is small, there is no need to adjust the display state of the display screen to reduce power consumption.

[0014] In a possible implementation, adjusting the display of the display screen includes: adjusting the display screen of the display. According to the actual position of the first power coil detected on the display screen, combined with the folding state and screen state of the electronic device, the user is prompted to place the wireless charging device in the charging area supported by the electronic device, guiding the user to move the device precisely and improving the user experience.

[0015] In a possible implementation, adjusting the display screen of the display includes: generating a prompt message, and 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. Multiple prompt messages can be generated to guide the user to move the device precisely and improve the user experience.

[0016] In a possible implementation, the processor responds to the feedback signal, including: the processor determines whether the feedback signal is a charging interference signal or a touch signal. By the processor judging whether the feedback signal is a touch signal, the problem that the processor mistakenly feeds back an interference signal as a touch signal can be improved, and the probability of misoperation of the electronic device can be reduced.

[0017] In a possible implementation, when the processor determines that the feedback signal is a charging interference signal, it does not output a touch control signal.

[0018] In a possible implementation, when the processor determines that the feedback signal is a touch signal, it outputs a touch control signal according to the touch signal.

[0019] In a possible implementation, the processor also obtains the time period during which the first power coil emits a signal in response to the feedback signal, and controls the time period during which the touch driving chip collects the feedback signal to intersect with the time period during which the first power coil emits a signal. By controlling the time period during which the touch driving chip collects the feedback signal to intersect with the time period during which the first power coil emits a signal, at least one of the feedback signals collected by the touch driving chip can represent the relative position between the first power coil and the display screen, and the power consumption can be reduced while meeting the minimum detection requirements.

[0020] In a possible implementation, controlling the time period during which the touch driving chip collects the feedback signal to intersect with the time period during which the first power coil emits a signal includes: controlling the time period during which the touch driving chip collects the feedback signal to be within the time period during which the first power coil emits a signal. By controlling that there is a time period within the time period during which the touch driving chip collects the feedback signal that is within the time period during which the first power coil emits a signal, 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.

[0021] In a second aspect of the embodiments of the present application, a control method for a display screen is provided, which is 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 touch sensors arranged at intervals; 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 signals output by at least one touch sensor and sends 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 adjusts the display and / or touch of the display screen in response to the feedback signal. The beneficial effects of the control method for the display screen provided in the second aspect of the embodiments of the present application are the same as those of the electronic device provided in the first aspect, and will not be elaborated here.

[0022] In a possible implementation, adjusting the display of the display screen includes: adjusting the display state of the display screen.

[0023] In a possible implementation, adjusting the display of the display screen includes: adjusting the display picture of the display screen.

[0024] 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.

[0025] In a third aspect of the embodiments of the present application, an electronic device is provided, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to enable the electronic device to execute the control method for the display screen according to any item in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A Schematic diagram of the structure of an electronic device provided by an embodiment of the present application;

[0027] Figure 1B and Figure 1C Schematic diagram of an alignment situation provided by an embodiment of the present application;

[0028] Figure 2 Coupling relationship diagram between an electronic device and a first power coil provided by an embodiment of the present application;

[0029] Figure 3A Touch sampling principle diagram provided by an embodiment of the present application;

[0030] Figure 3B Waveform diagram in the idle mode provided by an embodiment of the present application;

[0031] Figure 3C Waveform diagram in the active mode provided by an embodiment of the present application;

[0032] Figure 4 Equivalent circuit diagram of a first power coil and an electronic device provided by an embodiment of the present application;

[0033] Figure 5A Transmission power waveform diagram of a first power coil provided by an embodiment of the present application;

[0034] Figure 5B and Figure 5C Timing diagram of a first power coil and timing diagram of a touch driving chip provided by an embodiment of the present application;

[0035] Figure 6A Position confirmation schematic diagram of a first power coil provided by an embodiment of the present application;

[0036] Figure 6B Schematic diagram of a touch signal judgment process provided by an embodiment of the present application;

[0037] Figure 7A Coupling interference schematic diagram of a first power coil of a pixel circuit provided by an embodiment of the present application;

[0038] Figure 7B Drive timing diagram of a pixel circuit provided by an embodiment of the present application;

[0039] Figure 7C Schematic diagram of display abnormality provided by an embodiment of the present application;

[0040] Figure 8 Gray scale curve diagram provided by an embodiment of the present application;

[0041] Figure 9A A schematic diagram of the refresh rate in different display modes provided by an embodiment of the present application;

[0042] Figure 9B A schematic diagram of a prompt for a display screen provided by an embodiment of the present application;

[0043] Figure 10 A driving timing diagram of a display screen provided by an embodiment of the present application;

[0044] Figure 11 A timing diagram of a first power coil and a driving timing diagram of a display screen provided by an embodiment of the present application;

[0045] Figures 12A - 12C A schematic diagram of a display screen outputting prompt information provided by an embodiment of the present application. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0047] Hereinafter, terms such as "second" and "first" are only for convenience of description, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "second", "first", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0048] In addition, in the embodiments of the present application, azimuth terms such as "upper", "lower", "left", and "right" may include but are not limited to being defined relative to the schematic placement of components in the accompanying drawings. It should be understood that these directional terms may be relative concepts, which are used for relative description and clarification, and may change accordingly with the change of the placement azimuth of the components in the accompanying drawings.

[0049] In the embodiments of the present application, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, "connection" may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium. In addition, the term "coupled" may be a direct electrical connection, or an indirect electrical connection through an intermediate medium. The term "contact" may be direct contact, or indirect contact through an intermediate medium.

[0050] In the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0051] The embodiments of the present application provide an electronic device, which can be a foldable electronic device, for example. Of course, the electronic device can also be a straight-board electronic device. The electronic device can be, for example, a mobile phone, a pad, a laptop computer, an e-reader, a personal computer (PC), a personal digital assistant (PDA), a smart wearable product (such as a smart watch, a smart bracelet), a virtual reality (VR) device, an augmented reality (AR) device, etc.

[0052] The embodiments of the present application do not impose special restrictions on the specific form of the above-mentioned electronic device. For the convenience of description in the following embodiments, the electronic device is taken as an example of a mobile phone for illustration.

[0053] Figure 1A It is a schematic structural diagram of an electronic device provided by the embodiments of the present application.

[0054] As Figure 1A shown, the electronic device 1 mainly includes a cover plate 10, a display screen 20, a middle frame 30, and a rear shell (or called a battery cover, a housing) 40.

[0055] The display screen 20 has a light-emitting side where a display picture can be seen and a back surface disposed opposite to the light-emitting side. The cover plate 10 is located on the light-emitting side of the display screen 20, and the rear shell 40 is located on the back surface of the display screen 20. The display screen 20 includes an active area (AA) for displaying images, and the active area includes a plurality of sub pixels (SP).

[0056] In a possible embodiment, the display screen 20 is a liquid crystal display (LCD). Based on this, the electronic device 1 further includes a backlight module (BLU) located on the back surface of the liquid crystal display. The backlight module can provide a light source to the liquid crystal display so that each sub pixel in the liquid crystal display can emit light to achieve image display.

[0057] 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, a quantum dot light emitting diodes (QLED) display module, etc. At this time, the display screen 20 can be a rigid display module, or the display screen 20 can also be a flexible display module.

[0058] 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 covers the display surface of the display screen 20 as a protective layer. In this way, the light transmitted by 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 for displaying a picture to the user. The display surface of the display screen 20 and the light-emitting side of the display screen 20 are on the same side, while the back surface of the display screen 20 refers to the surface opposite to the display surface of the display screen 20.

[0059] The middle frame 30 is located between the display screen 20 and the rear shell 40. An installation space is formed between the middle frame 30 and the rear shell 40 to accommodate electronic devices such as a printed circuit board (PCB), a battery, a receiver, a speaker, a camera, etc. The PCB can integrate electronic components such as the main controller, storage unit, antenna module, power management module, etc. of the electronic device, and the battery can supply power to electronic components such as the display screen 20, the circuit board, the receiver, the speaker, the camera, etc.

[0060] In some embodiments, the electronic device 1 further includes a central processing unit (CPU) chip, a dynamic random access memory (DRAM) chip, a radio frequency chip, a radio frequency power amplifier (PA) chip, a system on a chip (SOC), a power management integrated circuits (PMIC), a storage chip (such as a high bandwidth memory (HBM)), an audio processor chip, a touch screen control chip, a NAND flash, an image sensor chip, etc., which are disposed on the PCB. The PCB is used to carry the above chips and complete signal interaction with the above chips.

[0061] With the development of wireless power transmission (WPT) technology, wireless charging technology has gradually been incorporated into smart electronic devices.

[0062] In some embodiments, the electronic device includes a second power coil, and the wireless charging device includes a first power coil. During wireless charging, the handshake protocol is to detect whether there is a second power coil in its working area by the first power coil sending a personal identification number (PIN code) in real time. If the PIN code can form a closed loop, wireless charging will start. If the PIN code cannot form a closed loop, it will wait for the handshake at a certain period and frequency.

[0063] In this solution, it is mainly determined whether it is in the appropriate position through the wireless charging coil itself. Generally, the best charging position is obtained first. When the second power coil is at the best charging position, the charging efficiency is the highest and the charging current is the best at this time. It is determined whether the second power coil (i.e., the electronic device) is at the best position by judging whether the ideal charging efficiency and charging current are achieved. When it is not at the best position, the relative direction of the best position relative to the current position is prompted to the user, or the specific position of the best position is directly prompted to the user. It can be prompted through the display screen, or through lights, voice, vibration and other means.

[0064] Figure 1B and Figure 1C It is a schematic diagram of an alignment situation provided by an embodiment of the present application.

[0065] However, if the first power coil and the second power coil are used to determine the alignment situation, first of all, only after the first power coil and the second power coil establish a connection (handshake successfully), can a prompt message be sent to the user. Secondly, only when the alignment is performed within the effective working areas of the first power coil and the second power coil, can the handshake be successful, and it is impossible to exceed the effective working areas of the first power coil and the second power coil. As Figure 1B shown, when the first power coil is located 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 a multi-fold product, due to the diversity of the folding forms, there is a situation where the effective area of the second power coil of the electronic device is never aligned with the first power coil in a certain form. As a result, the first power coil and the second power coil can never shake hands, and there will be no subsequent reminder. Moreover, since the periodic PIN code is an interference to the display, therefore as Figure 1C shown, when the first power coil is placed on the light-emitting side of the display screen 20, it will cause abnormal display (such as water ripples, bright lines and dark lines flashing). However, when the first power coil is placed on the light-emitting side of the display screen 20, it also belongs to the situation where the first power coil is located outside the effective area of the second power coil, and there is no reminder at all.

[0066] Based on this, the embodiments of the present application provide 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, anti-interference can be increased through display adjustment or the user can be reminded to move the wireless charging device away.

[0067] Figure 2 It is a coupling relationship diagram between an electronic device and a first power coil provided by an embodiment of the present application, Figure 3A It is a touch sampling principle diagram provided by an embodiment of the present application.

[0068] The embodiments of the present application provide an electronic device 1, as Figure 2 shown, the electronic device 1 includes a display screen 20 and a processor 50.

[0069] The display screen 20 is used to display a picture, 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.

[0070] Exemplarily, the display screen 20 includes a touch panel driver integrated circuit (TPIC) and a plurality of spaced-apart touch sensors (TS). The plurality of touch sensors TS can be arranged in an array, for example. When the wireless charging device approaches the display screen 20 and the first power coil of the wireless charging device emits a signal, the touch sensor TS is used to receive the emission signal of 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 used to receive the emission power of the first power coil through capacitive coupling with the first power coil.

[0071] Exemplarily, the touch sensor TS includes a touch detection electrode and a common electrode, and the touch detection electrode and the common electrode form a self-inductance capacitance. The touch detection electrode forms an external capacitance with a finger, and the external capacitance and the self-inductance capacitance of the touch detection electrode form a coupling electric field between the touch detection electrode and the finger. The change of the external capacitance will change the size of the self-inductance capacitance, and the position of the touch point is calculated according to the change of the capacitance at the touch point position.

[0072] In some embodiments, the electronic device 1 further includes a screen protection layer and a middle frame. The screen protection layer is disposed on the light-emitting side of the display screen 20 to protect the display screen 20. The middle frame is disposed on the back of the display screen 20 to carry the display screen 20. The electronic device 1 may further include other film layer structures. The electronic device 1 schematically shown in the embodiments of the present application only schematically shows some structures included in the electronic device 1 and does not constitute a limitation on the electronic device provided by the embodiments of the present application.

[0073] The touch panel driver integrated circuit TPIC can be fixed on the middle frame, for example, as Figure 3A shown, the touch panel driver integrated circuit TPIC is coupled to at least one touch sensor TS, and is used to collect the feedback signal output by at least one touch sensor TS and send 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, and the feedback signal can also be used to indicate whether there is a touch object (such as a finger) performing a touch operation on the display screen 20.

[0074] Or it can be understood that the touch sensor TS has the function of touch feedback. The principle of the touch sensor TS to realize the touch feedback function is the same as the touch principle in the related art, which will not be elaborated 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 judge the alignment situation of the first power coil, rather than judging the alignment situation of the first power coil through the second power coil inside the electronic device 1.

[0075] For example, the touch driving chip TPIC receives feedback signals output by multiple touch sensors TS arranged in an array. After collecting the feedback signals, it outputs a matrix space (rawdata) signal.

[0076] The embodiments of the present application do not limit the method for demodulating the feedback signals output by the touch driving chip TPIC to the touch sensors TS. It only needs to receive the analog signals output by the touch detection electrodes and convert the analog signals into digital signals for output. For example, the feedback signals can be decoupled by performing analogue-to-digital conversion (ADC), analog filtering (FAE), self and mutual capacitance detection, etc. on the feedback signals. The structures of touch driving chips TPIC in related technologies are all applicable to the embodiments of the present application.

[0077] Figure 3B It is a waveform diagram in an idle power saving detection mode provided by the embodiments of the present application; Figure 3C It is a waveform diagram in an active accurate coordinate detection mode provided by the embodiments of the present application.

[0078] For example, the touch driving chip TPIC uses the idle mode to collect the feedback signals. As Figure 3B shown, the touch driving chip TPIC quickly collects the self and mutual capacitance feedback signals of the touch sensor TS in a short time to output a matrix space signal.

[0079] Alternatively, for example, the touch driving chip TPIC uses the active mode to collect the feedback signals. As Figure 3C shown, the touch driving 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 multiple times to output a matrix space signal.

[0080] Figure 4 It is an equivalent circuit diagram of a first power coil and an electronic device provided by the embodiments of the present application.

[0081] As Figure 4 shown, a signal path can be formed between the first power coil and the electronic device 1. One end of the first power coil is equivalently grounded to GND, and the other end forms a coupling capacitor C with the touch sensor TS. The signal of the first power coil is coupled into the touch sensor TS through the coupling capacitor C, and then transmitted to the touch driving chip TPIC through the touch sensor TS. The trace between the touch sensor TS and the touch driving chip TPIC can be equivalently regarded as a resistor R.

[0082] Figure 5A It is a transmitted power waveform diagram of a first power coil provided by the embodiments of the present application.

[0083] As shown Figure 5A in the figure, the first power coil periodically emits 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 emitted.

[0084] As shown Figure 4 in the figure, when the first power coil is located above the display screen 20, the first power coil and the display screen 20 form a transmission detection circuit. At this time, the touch driving 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 capacitance C between the touch detection electrode in the touch sensor TS. The touch driving chip TPIC demodulates the signal on the touch detection electrode, converts the analog signal into a digital signal, and then 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 touch, the processor 50 can determine whether there is a first power coil above the display screen 20 through the frequency and magnitude corresponding to the matrix space signal.

[0085] Figure 5B And Figure 5C are a timing diagram of a first power coil and a timing diagram of a touch driving chip provided by an embodiment of the present application.

[0086] In some embodiments, the processor 50 also responds to the feedback signal to obtain the time period when the first power coil emits a signal. As shown Figure 5B in the figure, and controls the touch driving chip DDIC to collect the time period when the feedback signal intersects with the time period when the first power coil emits a signal.

[0087] For example Figure 5B in the figure, the time period (encoding width) when the first power coil emits a signal is H, the time period when the touch driving chip TPIC collects the feedback signal is x, and the period of collecting the feedback signal is d. The time period x when the touch driving chip TPIC collects the feedback signal intersects with the time period H when the first power coil emits a signal, but there is no restrictive requirement for the relationship between the period of the touch driving chip TPIC collecting the feedback signal and the period of the first power coil emitting a signal. For example, it can be that the period of the touch driving chip TPIC collecting the feedback signal is less than the period of the first power coil emitting a signal, or it can be understood that the frequency of the touch driving chip TPIC collecting the feedback signal is greater than the frequency of the first power coil emitting a signal.

[0088] For example, to control the touch driving chip DDIC to frequently collect feedback signals, it is only necessary to have one collection period x intersect with the coding period H. Each coding period H can intersect with a collection period x, or some coding periods H can intersect with the collection period x.

[0089] By controlling the period x of the touch driving chip TPIC to collect feedback signals to intersect with the period H of the first power coil to emit signals, at least one of the feedback signals collected by the touch driving chip TPIC can represent the relative position of the first power coil and the display screen 20, while meeting the minimum detection requirements, the power consumption can be reduced.

[0090] In some embodiments, as Figure 5C shown, at least one period for the touch driving chip TPIC to collect feedback signals is located within the period of the first power coil to emit signals.

[0091] For example, the frequency of the first power coil to emit signals is F = 0.747 hz, the period T = 1.339 s, and the coding width H = 6.6 ms. The period for the touch driving chip TPIC to collect feedback signals is x, and the period is d. The touch driving chip TPIC needs a minimum width of x ms (x ms < H ms) for each detection. Assuming the period is d ms, then, if the touch driving chip TPIC is required to be able to detect each signal emitted by the first power coil, the detection period x and the period d need to satisfy H = d + 2x.

[0092] Considering the worst case, within the coding width H of the first power coil to emit signals, 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 driving chip TPIC can detect each signal emitted 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.

[0093] By controlling that there is a period within the period for the touch driving chip TPIC to collect feedback signals that is located within the period of the first power coil to emit signals, 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.

[0094] 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 driving chip TPIC.

[0095] In some embodiments, the processor 50 determines the position of the first power coil by analyzing the matrix space signal output by the touch driving chip TPIC, finding the row and column corresponding to the maximum point. This principle is simple.

[0096] 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.

[0097] Or for example, the processor 50 directly determines whether the interference is generated by the first power coil according to the matrix space signal and determines the position of the first power coil.

[0098] Figure 6A FIG. is a schematic diagram for confirming the position of a first power coil provided by an embodiment of the present application.

[0099] In other embodiments, the processor 50 accurately determines the position of the first power coil through the perpendicular bisector algorithm.

[0100] For example, as Figure 6A shown, first find the column i corresponding to the maximum point in the matrix space signal and the matrix value R corresponding to this point i . As shown in formula (1), for several columns centered on the i-th column (for example, sampling three columns), weighted average is taken to obtain the accurate abscissa. In formula (1), K is the coordinate coefficient.

[0101]

[0102] Similarly, first find the column j corresponding to the maximum point in the matrix space signal and the matrix value R corresponding to this point j . As shown in formula (12), for several columns centered on the j-th column (for example, sampling three columns), weighted average is taken to obtain the accurate abscissa. In formula (2), K is the coordinate coefficient.

[0103]

[0104] Combining the directions of 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 perpendicular bisector algorithm is used to obtain the coordinates in the X and Y directions, that is, the specific coordinate values of the first power coil on the display screen 20 are obtained.

[0106] The electronic device 1 provided by 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 above the display screen 20 along the third direction Z (thickness direction), and the pixel positions of the first power coil on the display screen 20 along the first direction X and the second direction Y, so as 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 characterizing the position information to give 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 the second power coil can collect, the position of the first power coil can still be detected. It is not restricted by the prerequisite for the successful handshake between the first power coil and the second power coil, nor by the effective detection area of the second power coil, and 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 driving chip TPIC and makes a control that matches 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 according to the matrix space signal output by the touch driving chip TPIC. For example, when the processor 50 determines that the feedback signal is a touch signal, it outputs a touch control signal according to the touch signal, and the processor 50 controls the display screen 20 to make a touch feedback display. 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 make an interference feedback display. The feedback of the electronic device 1 on the touch signal can be the same as that in the related art. The feedback of the electronic device 1 on the charging interference signal can be any one of the feedbacks in the related art. The embodiment of the present application does not limit this.

[0109] Figure 6B It is a schematic diagram of a touch signal judgment process provided by the embodiment of the present application.

[0110] For example, as Figure 6BAs shown, the touch driving chip TPIC detects the feedback signal in idle mode and active mode. When no object approaches the display screen 20, the touch driving chip TPIC is in idle mode. When an object approaches the display screen 20, the detection of the feedback signal by the touch driving chip TPIC enters the active mode from the idle mode. The processor 50 analyzes the matrix space signal output by the touch driving chip TPIC to determine whether there is large-scale random fluctuation in the matrix space signal. If there is large-scale fluctuation in the matrix space signal, which is significantly different from the matrix space signal corresponding to the conventional touch signal, it is determined as a charging interference signal, and the processor 50 does not output a touch control signal. If there is no large-scale fluctuation in the matrix space signal, it is determined as a touch signal, and the processor 50 outputs a touch control signal.

[0111] By judging whether the feedback signal is a touch signal through the processor 50, the problem that the processor 50 mistakenly feeds back the interference signal as a touch signal can be improved, and the probability of misoperation ("ghost touch") of the electronic device 1 can be reduced.

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

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

[0114] Exemplarily, the pixel circuit 11 includes a first reset circuit 111, a second reset circuit 112, a third reset circuit 113, a writing and threshold compensation circuit 114, a light emitting control circuit 115, and a light emitting device 116. The writing and threshold compensation circuit 114 includes a 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 capacitively 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 light-emitting 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 light-emitting 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 Figure 7B shown, the light-emitting process of the pixel circuit 11 in an image frame can be divided into an initialization stage t1, a data writing and compensation stage t2, a light-emitting stage t3, and an anode reset stage t.

[0117] In the initialization stage t1:

[0118] The first control signal of 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. Thus, the fourth transistor T4 changes from off to on and then from on to off. The second control signal of 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. Thus, the eighth transistor T8 changes from off to on and then from on to off.

[0119] The fifth control signal at the fifth control signal terminal P5 remains at a low level, and the fourth control signal at the fourth control signal terminal P4 and the light emission control signal at the light emission control signal terminal EM both remain at 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] During the data writing and compensation stage 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. As a result, 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. As a result, 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 emission control signal at the light emission control signal terminal EM all remain at a high level, and the first control signal at the first control signal terminal P1 remains at 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 stage t2, the second transistor T2, the third transistor T3, and the driving transistor T1 are respectively turned on, realizing the storage of the data voltage at the data voltage terminal Vdata in the storage capacitor Cst, completing the writing of the data voltage. Also, the threshold voltage compensation of the driving transistor T1 is realized. The threshold voltage compensation process of the driving transistor T1 can be considered as the process of the driving transistor T1 changing from the on state to the off state.

[0124] During the light emission stage t3:

[0125] The light emission control signal changes from a high level to a low level and then from a low level to a high level. As a result, 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 the 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 respectively remain at a high level, and the seventh transistor T7, the eighth transistor T8, and the second transistor T2 all remain in the off state.

[0127] During the light-emitting stage t3, the fifth transistor T5, the driving transistor T1, and the sixth transistor T6 are turned on respectively, transmitting a driving current to the light-emitting device 116, and the light-emitting device 116 emits light under the drive of the driving current.

[0128] Anode reset stage t:

[0129] The third control signal at the third control signal terminal P3 changes from a high level to a low level, and then from a low level to a 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 remain at a low level, and 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 remain at 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 an off state.

[0131] The first power coil is placed above the display screen 20, which will cause interference to 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 Figure 7C shown, it will cause the appearance of water ripples and other defects. Moreover, when the screen is not refreshed, the low brush mode (such as the screen-off display mode) will be automatically entered. After entering the low brush mode, the anti-interference ability of the display 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 influence of the first power coil on the display.

[0133] Exemplarily, 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 exemplarily, the processor 50 is configured to adjust the display state of the display screen 20 when the relative position between the first power coil and the display screen 20 indicates that the first power coil is within a set distance from the light-emitting side of the display screen 20.

[0135] When the first power coil is far from the display screen 20, the influence on the display may be negligible, so there is no need to adjust the display state of the display screen 20. By adding a distance judgment step, when the influence of the first power coil on the display is small, there is no need to adjust the display state of the display screen 20 to reduce power consumption.

[0136] Exemplarily, such as Figure 2 As shown, the electronic device further includes a display driver integrated circuit (DDIC). Under the control of the processor 50, the display driver chip DDIC adjusts the display state of the display screen 20. For example, the display driver chip DDIC is respectively coupled to the processor 50 and the display screen 20.

[0137] The water ripple is a display effect. It can start from aspects such as shielding, improving the charging rate, avoiding sensitive frequency points, and changing display conditions to avoid interference time. The following schematically illustrates the manner in which the display state of the display screen 20 is adjusted in the embodiments of the present application.

[0138] Figure 8 It is a grayscale curve graph provided by the embodiments of the present application.

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

[0140] Exemplarily, such as Figure 8 As shown, the initial display brightness of the display screen 20 is at point A. When it is determined that there is a first power coil above the display screen 20 and it is found that display anomalies may occur, the processor 50 sends a control signal to the display driver chip DDIC to increase the display brightness of the display screen 20 to point B, increasing the grayscale brightness of the display screen 20. When it is determined that the first power coil above the display screen 20 disappears, 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, 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 emission control signal at the light emission control signal terminal EM.

[0142] In the high-brightness mode, the water ripple is not easily found or disappears. Therefore, increasing the display brightness of the display screen 20 can improve the problem of display interference caused by the first power coil.

[0143] Figure 9A It is a schematic diagram of the refresh rate under different display modes provided by the embodiments of the present application, Figure 9B It is a schematic diagram of a prompt for a display screen provided by the embodiments of the present application.

[0144] In the second implementation manner, 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] Exemplarily, such as Figure 9AAs shown, in the normal mode (Nom), the display screen 20 displays at a high refresh rate. When a first power coil is detected above the display screen 20, the processor 50 sends a control signal to the display driver integrated circuit (DDIC) to drive the display screen 20 to always display at a high refresh rate (for example, the refresh rate is greater than 30 Hz) and not enter the screen-off display mode. When it is determined that the first power coil above the display screen 20 has disappeared, according to the application scenario, the processor 50 may send a control signal to the display driver integrated circuit (DDIC) to drive the display screen 20 to enter the screen-off display mode.

[0146] Alternatively, by way of example, as Figure 9A As shown, the display screen 20 has entered the screen-off display mode and displays at a low refresh rate. When a first power coil is detected above the display screen 20, the processor 50 sends a control signal to the display driver integrated circuit (DDIC) to drive the display screen 20 to display at a high refresh rate and exit the screen-off display mode. When it is determined that the first power coil above the display screen 20 has disappeared, according to the application scenario, the processor 50 may send a control signal to the display driver integrated circuit (DDIC) to drive the display screen 20 to enter the screen-off display mode.

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

[0148] In other embodiments, as Figure 9B As shown, when exiting the screen-off display mode, the processor 50 controls the display driver integrated circuit (DDIC) to drive the display screen 20 to display a prompt message to remind the user that the first power coil is located above the display screen and exit the screen-off display mode. After (or simultaneously with) the display screen 20 displays the prompt message, it exits the screen-off display mode.

[0149] In the embodiments of the present application, the refresh rate of the display screen 20 in the screen-off display mode is not limited, and different electronic devices 1 may 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 30 Hz. For example, it is possible to determine whether the display screen 20 enters the screen-off display mode by means of the refresh rate, the displayed picture, etc.

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

[0151] Figure 10 This is a driving timing diagram of a display screen provided by the embodiments of the present application.

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

[0153] Exemplarily, in the data writing and compensation stage 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 value of the storage capacitor Cst, and complete the writing of the data voltage. As Figure 10 shown, when a first power coil is detected above the display screen 20, the processor 50 sends a control signal to the display driving chip DDIC to control the duration of the data writing signal output by the display driving chip DDIC to the display screen 20 to be greater than a default set value. That is, the duration of turning on the second transistor T2, the third transistor T3, and the driving transistor T1 is controlled to be greater than the set value to extend the charging time of the gate of the driving transistor T1. When it is determined that the first power coil above the display screen 20 disappears, the processor 50 is controlled to send a control signal to the display driving chip DDIC to control the duration of the data writing signal output by the display driving chip DDIC to the display screen 20 to return to the default value.

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

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

[0156] Since the first power coil will affect the potential of the gate of the driving transistor and interfere with the charging effect of the gate of the driving transistor. By extending the duration of the data writing signal, the charging time is extended, the stability of the capacitor Cd in the driving circuit is improved, and thus the display interference is reduced.

[0157] Figure 11 This is a timing diagram of a first power coil and a driving timing diagram of a display screen provided by an embodiment of the present application.

[0158] In the fourth implementation manner, as Figure 11 shown, the processor 50 controls the period when the display driving chip DDIC outputs a data writing signal to the display screen 20 not to intersect with the period when the first power coil emits a signal.

[0159] Exemplarily, as Figure 11As shown, during the period when the first power coil emits a signal (or encodes), the touch driving chip TPIC collects feedback signals from the display screen 20. However, the display driving chip DDIC does not send a data writing signal to the display screen 20. When the first power coil does not emit a signal, the display driving chip DDIC sends a data writing signal to the display screen 20. That is, the period when the first power coil emits a signal is exactly staggered from the period when the display driving chip DDIC sends a data writing signal to the display screen 20.

[0160] For example, the electronic device 1 can continuously detect whether there is a first power coil above the display screen 20. When it detects that there is a first power coil above the display screen 20, it detects whether the first power coil sends a signal. When it detects that the first power coil sends a signal, the display driving chip DDIC pauses sending a data writing signal to the display screen 20.

[0161] Or, for example, the electronic device 1 continuously detects multiple times whether the first power coil sends a signal and summarizes the rule of the first power coil sending a signal. Then, it adjusts the timing of the display driving chip DDIC sending a data writing signal to the display screen 20 so that the period of sending the data writing signal exactly avoids the period when the first power coil sends a signal.

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

[0163] Figures 12A - 12C This is a schematic diagram of a display screen outputting a prompt message provided by an embodiment of the present application.

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

[0165] Exemplarily, the processor 50 generates a prompt signal in response to the feedback signal, and the display screen 20 displays the prompt message. For example, the prompt message includes one or more of the relative position between the first power coil and the display screen 20, the relative position between the first power coil and the second power coil of the electronic device 1, the moving direction of the first power coil, the moving distance of the first power coil, the moving direction of the electronic device 1, the moving distance of the electronic device 1, the position of the second power coil, and removing interfering objects.

[0166] For example, when the position of the first power coil relative to the display screen 20 is detected, the relative position between 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. 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 downward and to the right by XX cm. The prompt message 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. 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 upward and to the right by XX cm. 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 message can be displayed in the form of text, or it can also be displayed in the form of a pattern. The drawings in the embodiments of the present application are only for illustration and are not limited in any way.

[0168] The embodiments of the present application further provide a control method for a display screen, and this method can be applied to the above-mentioned electronic device 1. The control method of the 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 driving chip TPIC collects the feedback signals output by at least one touch sensor TS and sends the feedback signals to the processor 50. The feedback signals are used to indicate the relative position between the first power coil and the display screen 20; the processor 50 responds to the feedback signals and adjusts the display and / or touch control of the display screen 20.

[0170] In some embodiments, the control method of the display screen includes: in response to the 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 control of the display screen 13.

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

[0172] Or, exemplarily, adjusting the display of the display screen 13 includes: adjusting the display picture of the display screen 13.

[0173] The ways of adjusting the display state and the display picture of the display screen 13 can refer to the above relevant descriptions and will not be elaborated here.

[0174] An embodiment of the present application further provides an electronic device, including a memory and a processor 50. The memory stores a computer program. When the processor 50 executes the computer program to cause the electronic device 1 to execute the computer program, the above control method of the display screen is implemented.

[0175] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electronic device, characterized in that, The electronic device comprises a display screen and a processor, The display screen includes a touch driving chip and a plurality of touch sensors arranged at intervals; when the wireless charging device is close to the display screen, the touch sensor is used to receive the transmission signal of the first power coil of the wireless charging device and output a feedback signal; The touch driving chip is used to collect the feedback signal output by at least one of the touch sensors and send the feedback signal to the processor, wherein the feedback signal is used to indicate the relative position of the first power coil and the display screen; The processor adjusts the display and / or touch control of the display screen in response to the feedback signal.

2. The electronic device according to claim 1, wherein The adjusting the display of the display screen includes: adjusting the display state of the display screen.

3. The electronic device according to claim 2, characterized in that The electronic device further comprises a display driver chip, wherein the display driver chip is coupled to the processor; The adjusting the display state of the display screen includes: controlling the display driver chip to increase the display brightness of the display screen.

4. The electronic device according to claim 2, characterized in that, The electronic device further comprises a display driver chip, wherein the display driver chip is coupled to the processor; The adjusting the display state of the display screen includes: controlling the display driver 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 comprises a display driver chip, wherein the display driver chip is coupled to the processor; The adjusting the display state of the display screen includes: controlling the duration of the data writing signal output by the display driver chip to the display screen to be greater than a set value.

6. The electronic device according to claim 2, wherein The electronic device further comprises a display driver chip, wherein the display driver chip is coupled to the processor; The adjusting the display state of the display screen includes: controlling the time period during which the display driver chip outputs a data write signal to the display screen to be non-intersecting with the time period during which the first power coil transmits a signal.

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

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

9. The electronic device according to claim 8, wherein Adjusting the display screen of the display screen includes: Generate prompt information, the prompt information including one or more of 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 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 interference; The display screen is used to display the prompt information.

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

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

12. The electronic device according to claim 10, wherein The processor determines that the feedback signal is a touch signal, and 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 obtains a time period during which the first power coil transmits a signal in response to the feedback signal, and controls a time period during which the touch driving chip collects the feedback signal to intersect with the time period during which the first power coil transmits a signal.

14. The electronic device according to claim 13, wherein Controlling the time period during which the touch driving chip collects the feedback signal to intersect with the time period during which the first power coil transmits a signal includes: controlling the time period during which the touch driving chip collects the feedback signal to be within the time period during which the first power coil transmits 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 sensor receives a transmission signal of a first power coil of the wireless charging device and outputs a feedback signal; The touch driving chip collects the feedback signal output by at least one of the touch sensors, and sends the feedback signal to the processor, and the feedback signal is used to indicate a relative position between 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.

16. The control method of the display screen according to claim 15, characterized in that, Adjusting the display of the display screen includes: adjusting a 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 a 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 responding to the feedback signal includes: the processor determining 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 to cause the electronic device to execute the control method of the display screen according to any one of claims 15-18.

Images