Driving method of display device, intelligent terminal and storage medium

Abstract

This application belongs to the field of display technology, and particularly relates to a driving method for a display device, a smart terminal, and a storage medium. The driving method for the display device includes: in LPWG mode, outputting a target control signal to the TFT gate of a liquid crystal pixel, wherein the minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold. The technical solution of this application can optimize the touch scanning signal in LPWG mode to avoid screen flickering, thereby improving the user experience.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a driving method for a display device, a smart terminal, and a storage medium. Background Technology

[0002] LCD (Liquid Crystal Display) products typically have three display modes: Normal display, power off, and LPWG (Low Power Wake-up Gesture). In LPWG mode, the touch scanning signal is periodically scanned to ensure gesture wake-up sensitivity.

[0003] In conceiving and implementing this application, the inventors discovered at least the following problems: Frequent touch scanning signals cause pixels to generate coupled charges, and since the TFTs (Thin Film Transistors) of the pixel circuits are always in an off state, there is no release path for the coupled charges. Consequently, the accumulated coupled charges cause voltage fluctuations when the screen is on, leading to liquid crystal polarization and ultimately display abnormalities such as screen flickering. Therefore, optimizing the touch scanning signal in LPWG mode to avoid screen flickering is a pressing technical problem that needs to be solved.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a driving method for a display device, a smart terminal, and a storage medium, which can control the touch scanning of the display device and the release of coupled charges generated by pixels through the output target control signal in LPWG mode, thereby effectively avoiding the screen flickering problem when the screen is on in LPWG mode, and thus improving the user experience.

[0006] This application provides a driving method for a display device, comprising: in LPWG mode, outputting a target control signal to the TFT gate of a liquid crystal pixel, wherein the minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold.

[0007] Optionally, the target control signal includes at least one of the following: a touch scan signal, which includes at least one periodically output scan waveform signal; a release signal, which includes at least one release waveform signal, wherein the maximum value of the release signal is greater than a threshold voltage, and the maximum value of the release signal is greater than the maximum value of the touch scan signal.

[0008] Optionally, the touch scan signal includes at least one of the following: the minimum value of the scan waveform signal is less than the threshold voltage of the TFT; the maximum value of the scan waveform signal is equal to the minimum value of the release signal; the minimum value of the scan waveform signal is greater than the threshold voltage of the TFT; the minimum value of the scan waveform signal is equal to the minimum value of the release signal.

[0009] Optionally, the release signal includes at least one of the following: the release signal includes a single release waveform signal; the release signal includes at least two release waveform signals; the release signal is located at the beginning of the target control signal; and there is at least one set of touch scan signals between two adjacent release signals.

[0010] Optionally, when the release signal includes at least two release waveform signals, the release waveform signals may be the same or different.

[0011] Optionally, the target control signal includes at least two sets of touch scanning signals, each set of touch scanning signals containing the same or different number of scanning waveform signals.

[0012] Optionally, it also includes: in LPWG mode, outputting a first low-level signal to the TFT source of the liquid crystal pixel, wherein the first low-level signal is less than a third threshold.

[0013] Optionally, it also includes: after exiting LPWG mode, restoring the control signal output to the TFT gate to a second low-level signal, the second low-level signal being less than a fourth threshold.

[0014] This application also provides a smart terminal, including: a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, it implements the steps of any of the driving methods described above.

[0015] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements the steps of any of the driving methods described above.

[0016] As described above, the driving method of the display device of this application includes: in LPWG mode, outputting a target control signal to the TFT gate of a liquid crystal pixel, wherein the minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold. Therefore, this application can optimize the touch scanning signal in LPWG mode to avoid screen flickering, thereby improving the user experience. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application;

[0019] Figure 2 A communication network system architecture diagram provided in this application embodiment;

[0020] Figure 3 This is a schematic flowchart of the driving method for the display device shown in this application;

[0021] Figure 4 This is a schematic diagram illustrating the timing principle of the source drive signal shown in this application;

[0022] Figure 5 This is a flowchart illustrating the timing principle of drive signals in some current technical solutions;

[0023] Figure 6 This is a timing principle flowchart of the first type of driving signal shown in this application;

[0024] Figure 7 This is a circuit diagram of a shift register shown in this application;

[0025] Figure 8 This is a timing principle flowchart of the second type of driving signal shown in this application;

[0026] Figure 9 This is a timing principle flowchart of the third type of driving signal shown in this application;

[0027] Figure 10 This is a timing principle flowchart of the fourth type of driving signal shown in this application;

[0028] Figure 11 This is a schematic diagram of the driving circuit of the display device provided in this application;

[0029] Figure 12 This is a schematic diagram of the driving circuit for the pixel unit of the display device provided in this application.

[0030] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0032] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Optionally, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which needs to be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0033] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0034] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0035] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0036] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0037] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustration and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0038] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include smart terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0039] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminals.

[0040] Please see Figure 1 This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0041] The following is combined Figure 1 A detailed introduction to each component of the mobile terminal:

[0042] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, and a duplexer. Optionally, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G, and 6G.

[0043] WiFi is a short-range wireless transmission technology. Mobile terminals using the WiFi module 102 can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the invention.

[0044] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0045] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0046] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0047] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0048] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to processor 110, and can also receive and execute commands sent by processor 110. Optionally, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0049] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0050] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.

[0051] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Optionally, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0052] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0053] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0054] although Figure 1 As not shown, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0055] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.

[0056] Please see Figure 2 , Figure 2 This application provides a communication network system architecture diagram. The communication network system is an LTE system based on the universal mobile communication technology. The LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.

[0057] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.

[0058] E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Optionally, eNodeB2021 can connect to other eNodeB2022 via backhaul (e.g., X2 interface), and eNodeB2021 connects to EPC203, providing access from UE201 to EPC203.

[0059] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gateway) 2034, PGW (Packet Data Network Gateway) 2035, and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).

[0060] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0061] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.

[0062] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0063] First Embodiment

[0064] Figure 3 This is a schematic flowchart of the driving method for the display device shown in this application; Figure 4 This is a schematic diagram illustrating the timing principle of the source drive signal shown in this application; Figure 5 This is a flowchart illustrating the timing principle of the drive signals in some current embodiments; Figure 6 This is a flowchart illustrating the timing principle of the first type of drive signal; Figure 7 This is a circuit diagram of a shift register shown in this application; Figure 8 This is a timing principle flowchart of the second type of driving signal shown in this application; Figure 9 This is a timing principle flowchart of the third type of driving signal shown in this application; Figure 10 This is a timing diagram illustrating the fourth type of driving signal shown in this application. For a clear description of the driving method for the display device provided in the first embodiment of this application, see [link to relevant documentation]. Figures 3 to 10 .

[0065] The first embodiment of this application provides a driving method for a display device, including the following steps:

[0066] S10: In LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel. The minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold.

[0067] In one embodiment, in LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel via the shift register of the display device.

[0068] In one embodiment, the threshold voltage of the TFT can be a voltage that enables the pixel TFT to turn on, and can be 1 to 3V. It is understood that the threshold voltage of the TFT can be, but is not limited to, 1 to 3V, and can be other voltage values ​​according to subsequent technological developments, as long as the principle of Vg≥Vth is met.

[0069] In one embodiment, when the minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold (for example, the second threshold may be slightly greater than 0), and the difference between the threshold voltage of the TFT and the first threshold is equal to the second threshold, the first threshold is slightly less than the threshold voltage of the TFT. Therefore, when the minimum value of the target control signal is equal to the first threshold, the target control signal remains above the threshold voltage of the TFT for most of the time, enabling the pixel TFT to be turned on for a long time and the accumulated charge to be continuously released, ensuring that the liquid crystal does not become polarized due to coupled charge and that power consumption does not increase. Optionally, when the minimum value of the target control signal is greater than the first threshold (for example, when the minimum value of the target control signal is greater than or equal to the threshold voltage of the TFT), the target control signal can be maintained at or above the threshold voltage of the TFT, enabling the pixel TFT to be turned on for a long time and the accumulated charge to be continuously released, ensuring that the liquid crystal does not become polarized due to coupled charge. For example, the second threshold can be equal to 0, where the difference between the TFT threshold voltage and the first threshold is equal to the second threshold, and the first threshold is equal to the TFT threshold voltage. Therefore, when the minimum value of the target control signal is greater than the first threshold, the target control signal can be maintained at or above the TFT threshold voltage, allowing the pixel TFT to remain on for an extended period, and the accumulated charge can be continuously released, ensuring that the liquid crystal does not become polarized due to coupled charges. This implementation is easier for practical design and application. Optionally, the first and second thresholds can also be other values, which can be set based on power consumption or other practical needs.

[0070] In one embodiment, in LPWG mode, a first low-level signal is output to the TFT source of the liquid crystal pixel via the source driver of the display device. The first low-level signal is less than a third threshold. For example, see... Figure 4 The minimum voltage value of the first low-level signal is the reference low voltage GND, and the maximum voltage value of the first low-level signal is less than the third threshold. Optionally, the difference between the third threshold and the reference low voltage GND is very small, close to 0V.

[0071] In one embodiment, the target control signal includes at least one of the following: a touch scan signal and a release signal. Optionally, the touch scan signal enables the display device to perform touch scanning and may include at least one periodically output scan waveform signal. Optionally, the release signal enables the pixel TFT to reach a threshold voltage to turn on the pixel TFT, thereby releasing the coupled charge generated during touch scanning; the release signal may include at least one release waveform signal, the maximum value of the release signal being greater than or equal to the threshold voltage, and the maximum value of the release signal being greater than the maximum value of the touch scan signal. Therefore, this embodiment can control the touch scanning of the display device and the release of coupled charge generated by the pixels through the output target control signal in LPWG mode, thereby effectively avoiding the screen flickering problem when the screen is on in LPWG mode, and thus improving the user experience.

[0072] In one embodiment, the release signal may include at least one of the following: the release signal includes a single release waveform signal; the release signal includes at least two release waveform signals; the release signal is located at the beginning of the target control signal; and there is at least one set of touch scan signals between two adjacent release signals.

[0073] In one embodiment, when the release signal includes at least two release waveform signals, the release waveform signals may be the same or different.

[0074] In one embodiment, the target control signal includes at least two sets of touch scan signals, each set of touch scan signals containing the same or different number of scan waveform signals.

[0075] In one embodiment, the touch scan signal includes at least one of the following: the minimum value of the scan waveform signal is less than the threshold voltage of the TFT; the maximum value of the scan waveform signal is equal to the minimum value of the release signal; the minimum value of the scan waveform signal is greater than the threshold voltage of the TFT; and the minimum value of the scan waveform signal is equal to the minimum value of the release signal.

[0076] To facilitate understanding of the above technical concept of this embodiment, the following examples are provided for reference:

[0077] Some current technical solutions offer examples of partial optimization for the screen flickering problem:

[0078] In LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel, and a first low-level signal is output to the TFT source of the liquid crystal pixel; see [link to relevant documentation]. Figure 5The target control signal GOA includes multiple periodically output scanning waveform signals and release waveform signals. There is at least one set of touch scanning signals between the initial signal and an adjacent release waveform signal, and at least one set of touch scanning signals between two adjacent release signals. Optionally, the highest value VSP of the release waveform signal is greater than or equal to the threshold voltage of the TFT, and the maximum value of the scanning waveform signal is less than the threshold voltage of the TFT. Based on the above target control signal flicker test (or flicker test), the test conclusions are as follows:

[0079] In some current technical solutions, the LPWG mode, where the target control signal GOA is partially pulled high to VSP, allows the pixel TFT to be turned on for a short time, and the accumulated charge to be released for a short time. It has been verified that this can partially optimize the flickering problem caused by liquid crystal polarization and reduce the defect rate to a certain extent, but it cannot completely solve the problem. At the same time, because the target control signal frequently changes between the release waveform signal VSP and the minimum value VSN of the scan waveform signal, the voltage of the Vcom signal will be coupled, resulting in a worsening of the flickering situation in a short period of time, for example, the flickering situation will worsen in the first 10 minutes.

[0080] Example 1 of this application:

[0081] In LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel, and a first low-level signal is output to the TFT source of the liquid crystal pixel; see [link to relevant documentation]. Figure 6 The target control signal GOA includes multiple periodically output scanning waveform signals, and the minimum value of the scanning waveform signal is greater than or equal to the threshold voltage of the TFT. A flicker test (or flash test) was performed based on the above target control signal GOA, and the test results are as follows:

[0082] In Example 1, in LPWG mode, the target control signal GOA is fully pulled high, allowing the pixel TFTs to remain on for an extended period, enabling continuous release of accumulated charge and preventing liquid crystal polarization due to coupled charges. Verification has shown that Example 1 thoroughly optimizes the flickering issue caused by liquid crystal polarization, and since the target control signal GOA does not fluctuate frequently, flickering is unaffected. Furthermore, test results show that flickering levels during all test periods are within industry standards. Additionally, increasing the overall voltage of the target control signal GOA within a certain range does not lead to increased power consumption, as measured by actual tests.

[0083] Optionally, Example 1 also provides an implementation scheme for a shift register, enabling the shift register to output the aforementioned target control signal GOA; details are as follows, see below. Figure 7 The shift register includes a frame start unit, a reset unit, and an output unit.

[0084] Optionally, the frame start unit includes a first switching element M1, which includes a first control terminal, a first path terminal, and a second path terminal. The first control terminal and the first path terminal receive the frame start signal STV.

[0085] Optionally, the reset unit includes a second switching element M2, which includes a second control terminal, a third path terminal, and a fourth path terminal. The second control terminal receives a reset signal Reset, and the third path terminal is connected to the power supply terminal VGL.

[0086] Optionally, the output unit includes a charging node PU, a third switching element M3, a fourth switching element M4, and a GOA signal output interface. Optionally, the third switching element M3 includes a third control terminal, a fifth path terminal, and a sixth path terminal. The third control terminal is connected to the charging node PU, the fifth path terminal receives the clock signal CLK, and the sixth path terminal is connected to the GOA signal output interface. The fourth switching element M4 includes a fourth control terminal, a seventh path terminal, and an eighth path terminal. The fourth control terminal receives the reset signal Reset, the seventh path terminal is connected to the GOA signal output interface, and the eighth path terminal is connected to the power supply terminal VGL. Optionally, the charging node PU is also connected to the second path terminal and the fourth path terminal, and is also connected to the GOA signal output interface through a capacitor C1.

[0087] Optionally, capacitor C1 can be a storage capacitor or a parasitic capacitor.

[0088] Therefore, the aforementioned shift register can achieve the output of the target control signal GOA as shown in Example 2 at the end of LPWG. The specific working steps are as follows: 1. The frame start signal STV controls the voltage VSP output, which charges the charging node PU to VSP through the first switching element M1; 2. The third switching element M3 is turned on, and the clock signal CLK is turned on through the third switching element M3 to ensure that the GOA out control voltage VSP is output; 3. At the same time, the reset signal reset ensures that the second switching element M2 and the fourth switching element M4 are turned on, and the power supply VGL outputs the voltage VSP to GOA out through the fourth switching element M4, further ensuring the stability of GOA out to output the target control signal GOA.

[0089] Example 2 of this application:

[0090] In LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel, and a first low-level signal is output to the TFT source of the liquid crystal pixel; see [link to relevant documentation]. Figure 8The target control signal GOA includes multiple periodically output scan waveform signals and an initial signal. The highest value of the initial signal is set to a reference high voltage value VGH, and the minimum value of the subsequent touch scan waveform signals is greater than the threshold voltage of the TFT. Here, the initial signal refers to the situation where the release signal is located at the beginning of the target control signal. The initial signal is the release signal, which includes a single release waveform signal located at the beginning of the target control signal.

[0091] Therefore, Example 2 of this application adds a reference high voltage VGH to Example 1, which can ensure that the pixel TFT is turned on more fully. To ensure that the power consumption is within a reasonable range, VGH is only maintained in stages and then reduced to the minimum value of the touch scan signal, which can maintain the normal electrostatic discharge path.

[0092] Example 3 of this application:

[0093] In LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel, and a first low-level signal is output to the TFT source of the liquid crystal pixel; see [link to relevant documentation]. Figure 9 The target control signal GOA includes multiple periodically output scan waveform signals and release waveform signals. At least one set of touch scan signals is spaced between two adjacent release signals. Optionally, the highest value of the release waveform signal is set to a reference high voltage value VGH, and the lowest value is set to VSP. Optionally, the minimum value of the scan waveform signal is greater than the threshold voltage of the TFT, and the minimum value of the scan waveform signal is equal to the minimum value of the release signal.

[0094] Therefore, Example 3 of this application adds a reference high voltage VGH to Example 1, which can ensure that the pixel TFT is fully opened. To ensure that the power consumption is within a reasonable range, VGH is periodically maintained and then reduced to VSP, which can maintain the normal electrostatic discharge path, thereby optimizing the LPWG mode to avoid screen flickering and thus improving the user experience.

[0095] Example 4 of this application:

[0096] See Figure 10In Example 4 of this application, based on Example 3, the touch scan signal in the target control signal GOA is inverted, and the first low-level signal output to the TFT source of the liquid crystal pixel is also inverted. Optionally, the target control signal GOA includes multiple periodically output scan waveform signals and release waveform signals, with at least one set of touch scan signals between two adjacent release signals. Optionally, the highest value of the release waveform signal is set to a reference high voltage value VGH, and the lowest value is set to VSP. Optionally, the minimum value of the scan waveform signal of the touch scan signal is greater than the threshold voltage of the TFT, and the maximum value of the scan waveform signal is equal to the minimum value of the release signal. Tests show that Example 4 can effectively reduce power consumption without affecting the touch effect.

[0097] In one embodiment, the method further includes: after exiting the LPWG mode, restoring the control signal output to the TFT gate to a second low-level signal, the second low-level signal being less than a fourth threshold. For example, the minimum voltage value of the second low-level signal is a reference low voltage GND, and the maximum voltage value of the second low-level signal is less than a third threshold. Optionally, the difference between the third threshold and the reference low voltage GND is extremely small, close to 0V.

[0098] The first embodiment of this application provides a driving method for a display device, including: S10: In LPWG mode, outputting a target control signal to the TFT gate of a liquid crystal pixel, wherein the minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold. Therefore, this embodiment can optimize the touch scanning signal in LPWG mode to avoid screen flickering, thereby improving the user experience.

[0099] Second Embodiment

[0100] This application also provides a smart terminal, including: a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, it implements the steps of the driving method as described in any of the above embodiments. Therefore, the smart terminal provided in this embodiment can optimize the touch scanning signal in LPWG mode to avoid screen flickering, thereby improving the user experience.

[0101] Figure 11 This is a schematic diagram of the driving circuit of the display device provided in this application; Figure 12 This is a schematic diagram of the driving circuit for the pixel unit of the display device provided in this application. For a clearer description of the display device in the smart terminal of this embodiment, please refer to... Figures 11 to 12 .

[0102] In one embodiment, this application also provides a display device applied to the aforementioned smart terminal. See also... Figure 11The display device includes a source driving circuit, a gate driving circuit, and a pixel array; optionally, the source driving circuit outputs a source driving signal EOA to each column of pixels through multiple source driving modules; optionally, the gate driving circuit outputs a target control signal GOA to each row of pixel units through multiple scan driving modules.

[0103] In one embodiment, the pixel array includes multiple pixel unit circuits, see [link to relevant documentation]. Figure 12 Each pixel unit circuit is connected to a gate driving line and a source driving line. When driving the display device based on the driving method of this application, in LPWG mode, the accumulated charge in the pixel unit can be released to avoid screen flickering, thereby improving the user experience.

[0104] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described above. The storage medium provided in this embodiment, when executed by a processor, can optimize the touch scanning signal in LPWG mode to avoid screen flickering, thereby improving the user experience.

[0105] In one embodiment, the storage medium may be, but is not limited to, volatile memory or non-volatile memory, or may include both. Optionally, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); the magnetic surface memory may be disk storage or magnetic tape storage. The volatile memory may be random access memory (RAM), which serves as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).

[0106] In the embodiments of the smart terminal and storage medium provided in this application, all the technical features of any of the above-described driving method embodiments may be included. The extended and explained contents of the specification are basically the same as the embodiments of the above methods, and will not be repeated here.

[0107] This application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, it causes the computer to perform the methods described in the various possible implementations above.

[0108] This application also provides a chip, including a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device with the chip installed performs the methods described in the various possible implementations above.

[0109] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0110] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0111] The steps in the method of this application embodiment can be adjusted, combined, or deleted according to actual needs.

[0112] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0113] In this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions that are not described in detail later can be referred to their previous relevant detailed descriptions.

[0114] In this application, the descriptions of the various embodiments have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0115] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0116] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal, or network device, etc.) to execute the methods of each embodiment of this application.

[0117] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, storage disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0118] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A driving method for a display device, characterized in that, include: In LPWG mode, a target control signal is output to the TFT gate of the liquid crystal pixel. The minimum value of the target control signal is greater than or equal to a first threshold, and the difference between the threshold voltage of the TFT and the first threshold is less than or equal to a second threshold.

2. The driving method according to claim 1, characterized in that, The target control signal includes at least one of the following: The touch scanning signal includes at least one periodically output scanning waveform signal; A release signal, the release signal comprising at least one release waveform signal.

3. The driving method according to claim 2, characterized in that, The touch scanning signal includes at least one of the following: The minimum value of the scan waveform signal is less than the threshold voltage of the TFT; The maximum value of the scan waveform signal is equal to the minimum value of the release signal; The minimum value of the scan waveform signal is greater than the threshold voltage of the TFT; The minimum value of the scan waveform signal is equal to the minimum value of the release signal.

4. The driving method according to claim 2, characterized in that, The release signal includes at least one of the following: The release signal includes a single release waveform signal; The release signal includes at least two release waveform signals; The release signal is located at the initial point of the target control signal; There is at least one set of touch scan signals between two adjacent release signals.

5. The driving method according to claim 4, characterized in that, When the release signal includes at least two release waveform signals, the release waveform signals may be the same or different.

6. The driving method according to claim 4, characterized in that, The target control signal includes at least two sets of the touch scanning signals, and the number of scanning waveform signals contained in each set of the touch scanning signals may be the same or different.

7. The driving method according to any one of claims 1 to 6, characterized in that, Also includes: In the LPWG mode, a first low-level signal is output to the TFT source of the liquid crystal pixel, and the first low-level signal is less than a third threshold.

8. The driving method according to any one of claims 1 to 6, characterized in that, Also includes: After exiting the LPWG mode, the control signal output to the TFT gate is restored to a second low-level signal, which is less than the fourth threshold.

9. A smart terminal, characterized in that, include: A memory and a processor, wherein the memory stores a computer program, which, when executed by the processor, implements the steps of the driving method as described in any one of claims 1 to 8.

10. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the steps of the driving method as described in any one of claims 1 to 8.

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