WO2023159705A1 - 显示面板的调光方法、装置、存储介质及终端设备 - Google Patents

显示面板的调光方法、装置、存储介质及终端设备 Download PDF

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Publication number
WO2023159705A1
WO2023159705A1 PCT/CN2022/082023 CN2022082023W WO2023159705A1 WO 2023159705 A1 WO2023159705 A1 WO 2023159705A1 CN 2022082023 W CN2022082023 W CN 2022082023W WO 2023159705 A1 WO2023159705 A1 WO 2023159705A1
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WO
WIPO (PCT)
Prior art keywords
signal
dimming
display panel
stage
light
Prior art date
Application number
PCT/CN2022/082023
Other languages
English (en)
French (fr)
Inventor
李睿雄
陈金佳
Original Assignee
惠州华星光电显示有限公司
Tcl华星光电技术有限公司
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Publication date
Application filed by 惠州华星光电显示有限公司, Tcl华星光电技术有限公司 filed Critical 惠州华星光电显示有限公司
Priority to US17/771,482 priority Critical patent/US11915635B2/en
Publication of WO2023159705A1 publication Critical patent/WO2023159705A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to the technical field of display panels, in particular to a dimming method, device, storage medium and terminal equipment for a display panel.
  • the current dimming methods are mainly divided into two parts.
  • the first is pulse width modulation (PWM) dimming. Different internal conduction conditions can be used to achieve different brightness. The advantage is that when displaying low gray scales, the output amplitude is constant, the color consistency is good, and the luminous rate of LEDs is high. It is more accurate for low gray scale reality, but it is easy Produces stroboscopic flicker visible to the naked eye.
  • the second is DC (Direct Current, DC) dimming. Its principle is to directly control the brightness by controlling the output power (current or voltage). Smaller, the luminous efficiency of the LED is low, and the color consistency is poor.
  • the N-type switch tube has its own minimum on-time limit (generally 6.7us), it is difficult to meet the more accurate low grayscale display, and the future development trend of high refresh rate and high grayscale number (10bit). Moreover, the reliability of PWM dimming at low gray levels is significantly better than that of DC dimming.
  • PWM dimming and DC dimming are used for the problem of low accuracy of low gray scale regulation.
  • the present invention provides a dimming method of a display panel, the method comprising: acquiring the gray value of the frame to be displayed, and determining the lighting stage of the display panel; when the lighting stage is the first dimming During the stage, the lighting signal and the control signal are determined according to the gray value of the frame to be displayed; the display panel is controlled to emit light by superimposing the control signal on the lighting signal.
  • the method further includes: when the light-emitting stage is the second dimming stage, determining a light-emitting signal according to the gray value of the frame to be displayed; and controlling the display panel to emit light through the light-emitting signal.
  • the determining the lighting signal according to the gray value of the frame to be displayed includes: generating the dimming signal according to the gray value of the frame to be displayed to control the input of the lighting signal.
  • control signal is input synchronously with the lighting signal, the frequency of the control signal is the same as the frequency of the dimming signal, the amplitude of the control signal is smaller than the amplitude of the lighting signal, and the control signal The direction of the magnitude of the signal is opposite to the direction of the magnitude of the luminescence signal.
  • the display gray value of the display panel is controlled according to the duty ratio of the dimming signal and the amplitude of the control signal; or in the first light-emitting stage, according to the The amplitude of the control signal controls the display gray scale of the display panel.
  • the display grayscale value of the display panel is controlled according to the duty cycle of the dimming signal.
  • the first dimming stage is a light-emitting stage when the grayscale value of the frame to be displayed does not exceed 10% of the maximum grayscale value of the display panel; the second dimming stage is the frame to be displayed A light-emitting stage when the grayscale value of the frame is greater than 10% of the maximum grayscale value of the display panel.
  • the present invention provides a dimming device for a display panel.
  • the device includes: an input unit for inputting a light emitting signal; Generating a dimming signal to control the input of the light emitting signal; a low gray scale control unit, used to generate a control signal according to the gray value of the frame to be displayed and superimposed on the light emitting signal in the first dimming stage; and a A light emitting unit, configured to control the display panel to emit light according to the superimposed light emitting signal.
  • the present invention provides a storage medium, wherein a computer program is stored in the storage medium, and when the computer program is run on a computer, the computer is executed to obtain the gray value of the frame to be displayed. , determine the light-emitting stage of the display panel; when the light-emitting stage is the first dimming stage, determine the light-emitting signal and the control signal according to the gray value of the frame to be displayed; superimpose the control signal on the light-emitting signal to The display panel is controlled to emit light.
  • a light-emitting signal is determined according to the gray value of the frame to be displayed; the display panel is controlled to emit light through the light-emitting signal.
  • the determining the lighting signal according to the gray value of the frame to be displayed includes: generating the dimming signal according to the gray value of the frame to be displayed to control the input of the lighting signal.
  • control signal is input synchronously with the lighting signal, the frequency of the control signal is the same as the frequency of the dimming signal, the amplitude of the control signal is smaller than the amplitude of the lighting signal, and the control signal The direction of the magnitude of the signal is opposite to the direction of the magnitude of the luminescence signal.
  • the display gray value of the display panel is controlled according to the duty ratio of the dimming signal and the amplitude of the control signal; or in the first light-emitting stage, according to the The amplitude of the control signal controls the display gray scale of the display panel.
  • the display grayscale value of the display panel is controlled according to the duty cycle of the dimming signal.
  • the first dimming stage is a light-emitting stage when the grayscale value of the frame to be displayed does not exceed 10% of the maximum grayscale value of the display panel; the second dimming stage is the frame to be displayed A light-emitting stage when the grayscale value of the frame is greater than 10% of the maximum grayscale value of the display panel.
  • the present invention provides a terminal device including a processor and a memory, the processor is electrically connected to the memory, the memory is used to store instructions and data, and the processor is used to execute the Steps in the dimming method of a display panel described in any embodiment of the invention.
  • the advantage of the present invention is that the present invention controls the grayscale of the light-emitting stage of the display panel through the light-emitting signal in the second light-adjusting stage in one frame, and controls the gray scale of the light-emitting stage of the display panel in the first light-adjusting stage in one frame.
  • a control signal is superimposed to control the grayscale of the display panel in the light-emitting phase, so when the grayscale is low, the low grayscale is realized by reducing the amplitude of the light-emitting signal.
  • Fig. 1a is a flow chart of steps of a dimming method for a display panel provided by one embodiment of the present invention
  • Fig. 1b is a flow chart of the steps of the dimming method of the display panel provided by one embodiment of the present invention.
  • Fig. 2 is a schematic structural diagram of a dimming device for a display panel provided by one embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a terminal device provided by one embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a terminal device provided by one embodiment of the present invention.
  • Fig. 5 is a timing diagram of light emitting signals according to one embodiment of the present invention.
  • FIG. 6 is a timing diagram of control signals according to one embodiment of the present invention.
  • FIG. 7 is a timing diagram of the superimposed luminescence signals according to one embodiment of the present invention.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation.
  • installation connection
  • connection connection
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation.
  • FIG. 1a and FIG. 1b it is a flow chart of the steps of the dimming method of the display panel provided by the embodiment of the present invention.
  • the methods include:
  • Step S110 Obtain the grayscale value of the frame to be displayed, and determine the lighting stage of the display panel.
  • Step S120 When the lighting phase is the first dimming phase, determine a lighting signal and a control signal according to the gray value of the frame to be displayed.
  • Step S130 controlling the display panel to emit light by superimposing the control signal on the light emitting signal.
  • Step S210 When the lighting phase is the second dimming phase, determine a lighting signal according to the gray value of the frame to be displayed.
  • Step S220 Controlling the display panel to emit light through the emitting signal.
  • the light emitting phase includes the second dimming phase and the first dimming phase.
  • the gray value currently displayed by the display panel is greater than 10% of the maximum gray value of the display panel.
  • the first dimming stage is that the gray value currently displayed by the display panel does not exceed 10% of the maximum gray value of the display panel.
  • the gray value currently displayed by the display panel does not exceed 10% of the maximum gray value of the display panel.
  • the grayscale value of 27-256 grayscale can be used as the second dimming stage, and the grayscale value of 0-26 grayscale can be used as the first dimming stage.
  • the grayscale value of the frame to be displayed corresponding to the first dimming stage and the second dimming stage can be determined according to requirements, for example, the grayscale value of the frame to be displayed in the first dimming stage does not exceed the maximum value of the display panel.
  • the light-emitting stage when the grayscale value is 15%, and the second dimming stage is the light-emitting stage when the grayscale value of the frame to be displayed is greater than 15% of the maximum grayscale value of the display panel.
  • the boundary point of the grayscale value between the first dimming stage and the second dimming stage may be 8%-21% of the maximum grayscale value of the display panel.
  • the light-emitting signal is regulated and generated by a dimming signal, and the dimming signal is a PWM signal.
  • the control signal is input synchronously with the lighting signal, the frequency of the control signal is the same as the frequency of the lighting signal, the amplitude of the control signal is smaller than the amplitude of the lighting signal, and the amplitude of the control signal is The direction of is opposite to the amplitude direction of the luminescent signal.
  • the grayscale of the lighting phase of the display panel is controlled according to the duty cycle of the dimming signal.
  • control the grayscale of the light-emitting stage of the display panel according to the duty ratio of the dimming signal and the amplitude of the control signal, or control the gray scale according to the amplitude of the control signal in the first light-emitting stage Displays the grayscale of the glow phase of the panel.
  • the dimming signal controls the input of the light emitting signal
  • the dimming signal controls the duty cycle of the input of the light emitting signal through various switches in the switch unit.
  • changing the input amplitude of the light-emitting signal can change the gray level of the light-emitting stage, and because the amplitude of the light-emitting signal is determined by the received light-emitting signal, when the gray level is low (that is, the first light-emitting stage) The required amplitude is small and difficult to control.
  • the amplitude of the light-emitting signal in the second dimming stage is greater than a preset value, and the second dimming stage
  • the stage is that the amplitude of the light emitting signal does not exceed a preset value. That is to say, the amplitude of the light-emitting signal can be used as the demarcation point.
  • the demarcation point can be determined according to the working performance of the components in the display panel. 1 volt is used as the second dimming stage, and less than or equal to 1 volt is used as the first dimming stage.
  • the present invention controls the gray level of the light-emitting stage of the display panel through the light-emitting signal in the second dimming stage in one frame, and superimposes a control signal on the light-emitting signal to control the display in the first dimming stage in one frame.
  • the grayscale of the light-emitting phase of the panel so at low grayscales, low grayscales are achieved by reducing the amplitude of the light-emitting signal.
  • FIG. 2 it is a schematic structural diagram of a dimming device for a display panel provided by an embodiment of the present invention.
  • the device includes: an input unit 10 , a dimming unit 20 , a low gray scale control unit 30 and a light emitting unit 40 .
  • the input unit is used for receiving the light emitting signal.
  • the dimming unit is used to generate a dimming signal according to the gray value of the frame to be displayed to control the input of the lighting signal.
  • the low grayscale control unit is used for generating a control signal according to the grayscale value of the frame to be displayed and superimposing it with the light emitting signal in the first dimming stage.
  • the light emitting unit is used for controlling the display panel to emit light according to the superimposed light emitting signal.
  • the light emitting phase includes the second dimming phase and the first dimming phase.
  • the gray value currently displayed by the display panel is greater than 10% of the maximum gray value of the display panel.
  • the first dimming stage is that the gray value currently displayed by the display panel does not exceed 10% of the maximum gray value of the display panel.
  • the gray value currently displayed by the display panel does not exceed 10% of the maximum gray value of the display panel.
  • the grayscale value of 27-256 grayscale can be used as the second dimming stage, and the grayscale value of 0-26 grayscale can be used as the first dimming stage.
  • the grayscale value of the frame with display corresponding to the first dimming stage and the second dimming stage can be determined according to requirements, for example, the grayscale value of the frame to be displayed in the first dimming stage does not exceed the maximum value of the display panel.
  • the light-emitting stage when the grayscale value is 15%, and the second dimming stage is the light-emitting stage when the grayscale value of the frame to be displayed is greater than 15% of the maximum grayscale value of the display panel.
  • the boundary point of the grayscale value between the first dimming stage and the second dimming stage may be 8%-21% of the maximum grayscale value of the display panel.
  • the light-emitting signal is regulated and generated by a dimming signal, and the dimming signal is a PWM signal.
  • the control signal is input synchronously with the lighting signal, the frequency of the control signal is the same as the frequency of the lighting signal, the amplitude of the control signal is smaller than the amplitude of the lighting signal, and the amplitude of the control signal is The direction of is opposite to the amplitude direction of the luminescent signal.
  • the grayscale of the lighting phase of the display panel is controlled according to the duty cycle of the dimming signal.
  • control the grayscale of the light-emitting stage of the display panel according to the duty ratio of the dimming signal and the amplitude of the control signal, or control the gray scale according to the amplitude of the control signal in the first light-emitting stage Displays the grayscale of the glow phase of the panel.
  • the dimming signal controls the input of the light emitting signal
  • the dimming signal controls the duty cycle of the input of the light emitting signal through various switches in the switch unit.
  • changing the input amplitude of the light-emitting signal can change the gray level of the light-emitting stage, and because the amplitude of the light-emitting signal is determined by the received light-emitting signal, when the gray level is low (that is, the first light-emitting stage) The required amplitude is small and difficult to control.
  • the amplitude of the light-emitting signal in the second dimming stage is greater than a preset value, and the second dimming stage
  • the stage is that the amplitude of the light emitting signal does not exceed a preset value. That is to say, the amplitude of the light-emitting signal can be used as the demarcation point.
  • the demarcation point can be determined according to the working performance of the components in the display panel. 1 volt is used as the second dimming stage, and less than or equal to 1 volt is used as the first dimming stage.
  • the amplitude of the luminescence signal is a
  • the amplitude of the control signal is -a/2
  • the amplitude of the superimposed luminescence signal is a/2
  • reducing The amplitude is increased, so that a lower gray scale display can be achieved under the same duty cycle.
  • the amplitude of the luminescence signal is a
  • the amplitude of the control signal is -a/3
  • the amplitude of the superimposed luminescence signal is 2a/3.
  • the amplitude of the superimposed luminescence signal can be controlled by controlling the amplitudes of the luminescence signal and the control signal at the same time, or separately controlling the amplitudes of the luminescence signal and the control signal, Furthermore, the display of different gray scales is realized.
  • the present invention controls the gray level of the light-emitting stage of the display panel through the light-emitting signal in the second dimming stage in one frame, and superimposes a control signal on the light-emitting signal to control the display in the first dimming stage in one frame.
  • the grayscale of the light-emitting phase of the panel so at low grayscales, low grayscales are achieved by reducing the amplitude of the light-emitting signal.
  • an embodiment of the present invention also provides a terminal device, where the terminal device may be a smart phone, a tablet computer, or the like.
  • the terminal device 200 includes a processor 201 and a memory 202 .
  • the processor 201 is electrically connected with the memory 202 .
  • the processor 201 is the control center of the terminal device 200. It uses various interfaces and lines to connect various parts of the entire terminal device. By running or loading the application program stored in the memory 202 and calling the data stored in the memory 202, the terminal executes Various functions and processing data of the equipment, so as to monitor the terminal equipment as a whole.
  • the terminal device 200 is provided with multiple storage partitions, the multiple storage partitions include a system partition and a target partition, and the processor 201 in the terminal device 200 will follow the steps below to store one or more application
  • the instructions corresponding to the process of the program are loaded into the memory 202, and the processor 201 runs the application program stored in the memory 202, thereby realizing various functions:
  • the light-emitting stage When the light-emitting stage is the first dimming stage, determine a light-emitting signal and a control signal according to the gray value of the frame to be displayed;
  • the display panel is controlled to emit light by superimposing the control signal on the light emitting signal.
  • FIG. 4 shows a specific structural block diagram of a terminal device provided in an embodiment of the present application, and the terminal device may be used to implement the method for dimming a display panel provided in the foregoing embodiments.
  • the terminal device 300 may be a smart phone or a tablet computer.
  • the terminal device may further include the following components, the RF circuit 310 is used to receive and send electromagnetic waves, realize mutual conversion between electromagnetic waves and electrical signals, and communicate with a communication network or other devices.
  • the RF circuit 310 may include various existing circuit elements for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption/decryption chips, Subscriber Identity Module (SIM) cards, memory, and the like.
  • SIM Subscriber Identity Module
  • the RF circuit 310 can communicate with various networks, such as the Internet, intranet, wireless network, or communicate with other devices through a wireless network.
  • the wireless network mentioned above may include a cellular telephone network, a wireless local area network or a metropolitan area network.
  • the memory 320 can be used to store software programs and modules, such as program instructions/modules corresponding to the dimming method of the display panel in the above-mentioned embodiments, and the processor 380 executes various functional applications by running the software programs and modules stored in the memory 320 And data processing, that is, the function of realizing the dimming of the display panel.
  • the memory 320 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
  • the memory 320 may further include a memory that is remotely located relative to the processor 380, and these remote memories may be connected to the terminal device 300 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the input unit 330 can be used to receive input numbers or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.
  • the input unit 330 may include a touch-sensitive surface 331 and other input devices 332 .
  • the touch-sensitive surface 331 also referred to as a touch screen or touchpad, can collect user touch operations on or near it (for example, the user uses any suitable object or accessory such as a finger, a stylus, etc. on the touch-sensitive surface 331 or on the operation near the touch-sensitive surface 331), and drive the corresponding connection device according to the preset program.
  • the touch-sensitive surface 331 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the to the processor 380, and can receive and execute commands sent by the processor 380.
  • the touch-sensitive surface 331 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the input unit 330 may also include other input devices 332 .
  • other input devices 332 may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 340 can be used to display information input by or provided to the user and various graphical user interfaces of the terminal device 300. These graphical user interfaces can be composed of graphics, text, icons, videos and any combination thereof.
  • the display unit 340 may include a display panel 341, optionally, an LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, organic light-emitting diode) and other forms to configure the display panel 341 .
  • LCD Liquid Crystal Display, liquid crystal display
  • OLED Organic Light-Emitting Diode, organic light-emitting diode
  • the touch-sensitive surface 331 may cover the display panel 341, and when the touch-sensitive surface 331 detects a touch operation on or near it, the touch operation is sent to the processor 380 to determine the type of the touch event, and then the processor 380 determines the type of the touch event according to the touch event.
  • the type provides a corresponding visual output on the display panel 341 .
  • the touch-sensitive surface 331 and the display panel 341 are used as two independent components to realize input and output functions, in some embodiments, the touch-sensitive surface 331 and the display panel 341 can be integrated to realize input. and output functions.
  • the terminal device 300 may also include at least one sensor 350, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 341 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 341 when the terminal device 300 moves to the ear. and/or backlighting.
  • the gravitational acceleration sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used for applications that recognize the attitude of mobile phones (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for the gyroscope, barometer, hygrometer, thermometer, infrared sensor and other sensors that can also be configured on the terminal device 300, here No longer.
  • the audio circuit 360 , the speaker 361 and the microphone 362 can provide an audio interface between the user and the terminal device 300 .
  • the audio circuit 360 can transmit the electrical signal converted from the received audio data to the loudspeaker 361, and the loudspeaker 361 converts it into a sound signal output; After being received, it is converted into audio data, and after being processed by the output processor 380, the audio data is sent to another terminal through the RF circuit 310, or the audio data is output to the memory 320 for further processing.
  • the audio circuit 360 may also include an earplug jack to provide communication between an external earphone and the terminal device 300 .
  • the terminal device 300 can help the user to send and receive e-mails, browse the web, access streaming media, etc. through the transmission module 370 (such as a Wi-Fi module), which provides users with wireless broadband Internet access.
  • the transmission module 370 such as a Wi-Fi module
  • FIG. 4 shows the transmission module 370, it can be understood that it is not an essential component of the terminal device 300, and can be completely omitted as required without changing the essence of the invention.
  • the processor 380 is the control center of the terminal device 300, and uses various interfaces and lines to connect various parts of the entire mobile phone, by running or executing software programs and/or modules stored in the memory 320, and calling data stored in the memory 320 , execute various functions and process data of the terminal device 300, so as to monitor the mobile phone as a whole.
  • the processor 380 may include one or more processing cores; in some embodiments, the processor 380 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and applications, etc., and the modem processor mainly handles wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 380 .
  • the terminal device 300 also includes a power supply 390 (such as a battery) for supplying power to various components.
  • the power supply can be logically connected to the processor 380 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • the power supply 390 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.
  • the terminal device 300 may also include a camera (such as a front camera, a rear camera), a Bluetooth module, etc., which will not be repeated here.
  • the display unit of the terminal device is a touch screen display, and the terminal device also includes a memory, and one or more programs, wherein one or more programs are stored in the memory, and are configured to be controlled by one or one
  • the above processor executes one or more programs containing instructions for:
  • the light-emitting stage When the light-emitting stage is the first dimming stage, determine a light-emitting signal and a control signal according to the gray value of the frame to be displayed;
  • the display panel is controlled to emit light by superimposing the control signal on the light emitting signal.
  • each of the above modules may be implemented as an independent entity, or may be combined arbitrarily as the same or several entities.
  • each of the above modules please refer to the previous method embodiments, which will not be repeated here.
  • an embodiment of the present application provides a storage medium in which a plurality of instructions are stored, and the instructions can be loaded by a processor to perform the steps in any method for dimming a display panel provided in the embodiments of the present application. .
  • the storage medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD, etc.
  • the steps in the dimming method of any display panel provided in the embodiments of the present application can be executed, and therefore, the dimming method of any display panel provided in the embodiments of the present application can be realized.
  • the beneficial effects that can be achieved by the optical method are detailed in the previous embodiments, and will not be repeated here.

Abstract

本发明公开了一种显示面板的调光方法、装置、存储介质及终端设备。本发明通过在一帧画面内的第二调光阶段，通过发光信号控制显示面板的发光阶段的灰度，在一帧画面内的第一调光阶段，将发光信号中叠加一控制信号控制显示面板的发光阶段的灰度，因此在低灰度时，通过降低发光信号的幅度实现低灰度。

Description

显示面板的调光方法、装置、存储介质及终端设备 技术领域
本发明涉及显示面板技术领域，尤其涉及一种显示面板的调光方法、装置、存储介质及终端设备。
 背景技术
目前的调光方式主要分为两大部分，第一是脉冲宽度调制（Pulse width modulation，简称PWM）调光，其调光原理是通过改变导通的占空比，使其在一帧的时间内导通情况不同来实现亮度不同，其优点是在低灰阶显示时，输出的幅值一定，颜色的一致性好，LED的发光率效率高，对于低灰阶的现实更加精准，但容易产生肉眼可见的频闪。第二是直流（Direct Current，DC）调光，其原理是通过控制输出功率（电流或电压）直接控制亮度，其优点是无频闪，缺点是在低灰阶显示时由于流过LED的电流变小，LED的发光效率低，颜色一致性差。
由PWM调光原理可知，在一帧内的发光阶段，高占空比对应着高亮度，以8bit灰阶为例，需要一帧内的发光阶段切分出256种占空比。而以较低的刷新率60HZ为例，一帧的时间为16.67ms，在理论上最大不超过16.67ms的时间内切分256个不同的占空比，若平均切分每一灰阶的时间为65us，但灰阶的切分不能简单地线形切分，需要配合符合人眼特性伽马2.2的曲线进行非线性切分。在低灰阶情况需要比高灰更精细的占空比切分。而由于N型开关管有自己的最小导通时间限制（普遍为6.7us），难以符合更精准的低灰阶显示，以及未来高刷新率，高灰阶数（10bit）的发展趋势。而且PWM调光在低灰阶的可靠性明显优于DC调光。
DC调光在低灰阶调节亮度时，需要非常精确地切分每个灰阶的功率，对于电流或电压的纹波要求非常高，技术开发难度较大。
 技术问题
目前采用PWM调光和DC调光对于低灰阶调控精准度低的问题。
 技术解决方案
根据本发明的一方面，本发明提供一种显示面板的调光方法，所述方法包括：获取待显示帧的灰度值，确定显示面板的发光阶段；当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号；通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
进一步地，所述方法还包括：当所述发光阶段为第二调光阶段时，根据所述待显示帧的灰度值确定发光信号；通过所述发光信号控制所述显示面板发光。
进一步地，所述根据所述待显示帧的灰度值确定发光信号，包括：根据所述待显示帧的灰度值生成所述调光信号以控制所述发光信号的输入。
进一步地，所述控制信号与所述发光信号同步输入，所述控制信号的频率与所述调光信号频率相同，所述控制信号的幅值小于所述发光信号的幅值，且所述控制信号的幅值的方向与所述发光信号的幅值方向相反。
进一步地，在所述第一发光阶段，根据所述调光信号的占空比和所述控制信号的幅值控制显示面板的显示灰度值；或在所述第一发光阶段，根据所述控制信号的幅值控制显示面板的显示灰度。
进一步地，在所述第二发光阶段，根据所述调光信号的占空比控制显示面板的显示灰度值。
进一步地，所述第一调光阶段为所述待显示帧的灰度值不超过所述显示面板最大灰度值的10%时的发光阶段；所述第二调光阶段为所述待显示帧的灰度值大于所述显示面板最大灰度值的10%时的发光阶段。
根据本发明的另一方面，本发明提供一种显示面板的调光装置，所述装置包括：一输入单元，用于输入发光信号；一调光单元，用于根据待显示帧的灰度值生成调光信号以控制所述发光信号的输入；一低灰阶控制单元，用于在第一调光阶段，根据待显示帧的灰度值生成控制信号并与所述发光信号叠加；以及一发光单元，用于根据叠加后的发光信号控制所述显示面板发光。
根据本发明的另一方面，本发明提供一种存储介质，所述存储介质中存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行获取待显示帧的灰度值，确定显示面板的发光阶段；当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号；通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
进一步地，当所述发光阶段为第二调光阶段时，根据所述待显示帧的灰度值确定发光信号；通过所述发光信号控制所述显示面板发光。
进一步地，所述根据所述待显示帧的灰度值确定发光信号，包括：根据所述待显示帧的灰度值生成所述调光信号以控制所述发光信号的输入。
进一步地，所述控制信号与所述发光信号同步输入，所述控制信号的频率与所述调光信号频率相同，所述控制信号的幅值小于所述发光信号的幅值，且所述控制信号的幅值的方向与所述发光信号的幅值方向相反。
进一步地，在所述第一发光阶段，根据所述调光信号的占空比和所述控制信号的幅值控制显示面板的显示灰度值；或在所述第一发光阶段，根据所述控制信号的幅值控制显示面板的显示灰度。
进一步地，在所述第二发光阶段，根据所述调光信号的占空比控制显示面板的显示灰度值。
进一步地，所述第一调光阶段为所述待显示帧的灰度值不超过所述显示面板最大灰度值的10%时的发光阶段；所述第二调光阶段为所述待显示帧的灰度值大于所述显示面板最大灰度值的10%时的发光阶段。
根据本发明的另一方面，本发明提供一种终端设备包括处理器和存储器，所述处理器与所述存储器电性连接，所述存储器用于存储指令和数据，所述处理器用于执行本发明任意实施例所述的显示面板的调光方法中的步骤。
 有益效果
本发明的优点在于，本发明通过在一帧画面内的第二调光阶段，通过发光信号控制显示面板的发光阶段的灰度，在一帧画面内的第一调光阶段，将发光信号中叠加一控制信号控制显示面板的发光阶段的灰度，因此在低灰度时，通过降低发光信号的幅度实现低灰度。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1a是本发明其中一实施例提供的显示面板的调光方法的步骤流程图；
图1b是本发明其中一实施例提供的显示面板的调光方法的步骤流程图；
图2是本发明其中一实施例提供的显示面板的调光装置结构示意图；
图3是本发明其中一实施例提供终端设备的结构示意图；
图4是本发明其中一实施例提供的终端设备结构示意图；
图5是本发明其中一实施例发光信号的时序图；
图6是本发明其中一实施例控制信号的时序图；
图7是本发明其中一实施例叠加后的发光信号的时序图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
如图1a和图1b所示，为本发明实施例提供的显示面板的调光方法步骤流程图。所述方法包括：
步骤S110：获取待显示帧的灰度值，确定显示面板的发光阶段。
步骤S120：当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号。
步骤S130：通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
步骤S210：当所述发光阶段为第二调光阶段时，根据所述待显示帧的灰度值确定发光信号。
步骤S220：通过所述发光信号控制所述显示面板发光。
在本实施例中，所述发光阶段包括所述第二调光阶段和所述第一调光阶段。
可选的，所述第二调光阶段为显示面板当前所显示的灰度值大于显示面板最大灰度值的10%。所述第一调光阶段为显示面板当前所显示的灰度值不超过显示面板最大灰度值的10%。例如以8bit灰阶为例，需要一帧内的发光阶段切分出256种占空比。而以较低的刷新率60HZ为例，一帧的时间为16.67ms，在理论上最大不超过16.67ms的时间内切分256个不同的占空比。那么27-256灰阶的灰度值可以作为第二调光阶段，0-26灰阶的灰度值可以作为第一调光阶段。可以理解的是，第一调光阶段和第二调光阶段对应的待显示帧的灰度值可以是根据需求确定，例如第一调光阶段为待显示帧的灰度值不超过显示面板最大灰度值的15%时的发光阶段，第二调光阶段为待显示帧的灰度值大于显示面板最大灰度值的15%的发光阶段。示例性的，第一调光阶段和第二调光阶段的灰度值分界点可以是显示面板最大灰度值的8%~21%。
示例性地，所述发光信号由调光信号调控生成，所述调光信号为PWM信号。所述控制信号与所述发光信号同步输入，所述控制信号的频率与所述发光信号频率相同，所述控制信号的幅值小于所述发光信号的幅值，且所述控制信号的幅值的方向与发光信号的幅值方向相反。
示例性地，在第二发光阶段，根据所述调光信号的占空比控制显示面板的发光阶段的灰度。在第一发光阶段，根据所述调光信号的占空比和所述控制信号的幅值控制显示面板的发光阶段的灰度，或在第一发光阶段，根据所述控制信号的幅值控制显示面板的发光阶段的灰度。
当然在其他实施例中，由于调光信号控制生成发光信号的输入，例如调光信号通过开关单元中各种开关的通断控制发光信号的输入的占空比，在发光信号的输入占空比不变的情况下，改变发光信号的输入的幅值可以改变发光阶段的灰度，又因发光信号的幅值由所接收的发光信号决定，当低灰阶时(即第一发光阶段)所需的幅值较小难以控制，因而在划分第一调光阶段和第二调光阶段时，所述第二调光阶段为发光信号的幅值大于一预设值，所述第二调光阶段为发光信号的幅值不超过一预设值。也就是说可以以发光信号的幅值作为分界点，该分界点可以根据显示面板中元器件的工作性能决定，例如当幅值大于1伏特时对电流或电压的波动较小，那么可以将大于1伏特作为第二调光阶段，小于等于1伏特作为第一调光阶段。
本发明通过在一帧画面内的第二调光阶段，通过发光信号控制显示面板的发光阶段的灰度，在一帧画面内的第一调光阶段，将发光信号中叠加一控制信号控制显示面板的发光阶段的灰度，因此在低灰度时，通过降低发光信号的幅度实现低灰度。
如图2所示，为本发明实施例提供的显示面板的调光装置的结构示意图。所述装置包括：输入单元10、调光单元20、低灰阶控制单元30和发光单元40。
输入单元用于接收发光信号。调光单元用于用于根据待显示帧的灰度值生成调光信号以控制所述发光信号的输入。低灰阶控制单元用于用于在第一调光阶段，根据待显示帧的灰度值生成控制信号并与所述发光信号叠加。发光单元用于根据叠加后的发光信号控制所述显示面板发光。
在本实施例中，所述发光阶段包括所述第二调光阶段和所述第一调光阶段。
可选的，所述第二调光阶段为显示面板当前所显示的灰度值大于显示面板最大灰度值的10%。所述第一调光阶段为显示面板当前所显示的灰度值不超过显示面板最大灰度值的10%。例如以8bit灰阶为例，需要一帧内的发光阶段切分出256种占空比。而以较低的刷新率60HZ为例，一帧的时间为16.67ms，在理论上最大不超过16.67ms的时间内切分256个不同的占空比。那么27-256灰阶的灰度值可以作为第二调光阶段，0-26灰阶的灰度值可以作为第一调光阶段。可以理解的是，第一调光阶段和第二调光阶段对应的带显示帧的灰度值可以是根据需求确定，例如第一调光阶段为待显示帧的灰度值不超过显示面板最大灰度值的15%时的发光阶段，第二调光阶段为待显示帧的灰度值大于显示面板最大灰度值的15%的发光阶段。示例性的，第一调光阶段和第二调光阶段的灰度值分界点可以是显示面板最大灰度值的8%~21%。
示例性地，所述发光信号由调光信号调控生成，所述调光信号为PWM信号。所述控制信号与所述发光信号同步输入，所述控制信号的频率与所述发光信号频率相同，所述控制信号的幅值小于所述发光信号的幅值，且所述控制信号的幅值的方向与发光信号的幅值方向相反。
示例性地，在第二发光阶段，根据所述调光信号的占空比控制显示面板的发光阶段的灰度。在第一发光阶段，根据所述调光信号的占空比和所述控制信号的幅值控制显示面板的发光阶段的灰度，或在第一发光阶段，根据所述控制信号的幅值控制显示面板的发光阶段的灰度。
当然在其他实施例中，由于调光信号控制生成发光信号的输入，例如调光信号通过开关单元中各种开关的通断控制发光信号的输入的占空比，在发光信号的输入占空比不变的情况下，改变发光信号的输入的幅值可以改变发光阶段的灰度，又因发光信号的幅值由所接收的发光信号决定，当低灰阶时(即第一发光阶段)所需的幅值较小难以控制，因而在划分第一调光阶段和第二调光阶段时，所述第二调光阶段为发光信号的幅值大于一预设值，所述第二调光阶段为发光信号的幅值不超过一预设值。也就是说可以以发光信号的幅值作为分界点，该分界点可以根据显示面板中元器件的工作性能决定，例如当幅值大于1伏特时对电流或电压的波动较小，那么可以将大于1伏特作为第二调光阶段，小于等于1伏特作为第一调光阶段。
示例性的，结合参阅图5、图6和图7，所述发光信号的幅值为a，控制信号的幅值为-a/2，叠加后的发光信号的幅值为a/2，降低了幅值，从而使得在相同占空比的情况下可以实现更低灰阶的显示。对应于另一低灰阶时，发光信号的幅值为a，控制信号的幅值为-a/3，叠加后的发光信号的幅值为2a/3。可以理解的是，根据具体对灰阶的需求，可以通过同时控制发光信号和控制信号的幅值、或分别控制发光信号和控制信号的幅值，来控制叠加后的发光信号的幅值大小，进而实现不同灰阶的显示。
本发明通过在一帧画面内的第二调光阶段，通过发光信号控制显示面板的发光阶段的灰度，在一帧画面内的第一调光阶段，将发光信号中叠加一控制信号控制显示面板的发光阶段的灰度，因此在低灰度时，通过降低发光信号的幅度实现低灰度。
另外，本发明实施例还提供一种终端设备，该终端设备可以是智能手机、平板电脑等设备。具体地，如图3所示，终端设备200包括处理器201和存储器202。其中，处理器201与存储器202电性连接。
处理器201是终端设备200的控制中心，利用各种接口和线路连接整个终端设备的各个部分，通过运行或加载存储在存储器202内的应用程序，以及调用存储在存储器202内的数据，执行终端设备的各种功能和处理数据，从而对终端设备进行整体监控。
在本实施例中，该终端设备200设有多个存储分区，该多个存储分区包括系统分区和目标分区，终端设备200中的处理器201会按照如下的步骤，将一个或一个以上的应用程序的进程对应的指令加载到存储器202中，并由处理器201来运行存储在存储器202中的应用程序，从而实现各种功能：
获取待显示帧的灰度值，确定显示面板的发光阶段；
当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号；
通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
图4示出了本申请实施例提供的终端设备的具体结构框图，该终端设备可以用于实施上述实施例中提供的显示面板的调光方法。该终端设备300可以为智能手机或平板电脑。另外，所述终端设备还可以包括以下部件，RF电路310用于接收以及发送电磁波，实现电磁波与电信号的相互转换，从而与通讯网络或者其他设备进行通讯。RF电路310可包括各种现有的用于执行这些功能的电路元件，例如，天线、射频收发器、数字信号处理器、加密/解密芯片、用户身份模块（SIM）卡、存储器等等。RF电路310可与各种网络如互联网、企业内部网、无线网络进行通讯或者通过无线网络与其他设备进行通讯。上述的无线网络可包括蜂窝式电话网、无线局域网或者城域网。
存储器320可用于存储软件程序以及模块，如上述实施例中显示面板的调光方法对应的程序指令/模块，处理器380通过运行存储在存储器320内的软件程序以及模块，从而执行各种功能应用以及数据处理，即实现显示面板的调光的功能。存储器320可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器320可进一步包括相对于处理器380远程设置的存储器，这些远程存储器可以通过网络连接至终端设备300。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
输入单元330可用于接收输入的数字或字符信息，以及产生与用户设置以及功能控制有关的键盘、鼠标、操作杆、光学或者轨迹球信号输入。具体地，输入单元330可包括触敏表面331以及其他输入设备332。触敏表面331，也称为触摸显示屏或者触控板，可收集用户在其上或附近的触摸操作（比如用户使用手指、触笔等任何适合的物体或附件在触敏表面331上或在触敏表面331附近的操作），并根据预先设定的程式驱动相应的连接装置。可选的，触敏表面331可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器380，并能接收处理器380发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触敏表面331。除了触敏表面331，输入单元330还可以包括其他输入设备332。具体地，其他输入设备332可以包括但不限于物理键盘、功能键（比如音量控制按键、开关按键等）、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元340可用于显示由用户输入的信息或提供给用户的信息以及终端设备300的各种图形用户接口，这些图形用户接口可以由图形、文本、图标、视频和其任意组合来构成。显示单元340可包括显示面板341，可选的，可以采用LCD(Liquid Crystal Display，液晶显示器)、OLED(Organic Light-Emitting Diode,有机发光二极管)等形式来配置显示面板341。进一步的，触敏表面331可覆盖显示面板341，当触敏表面331检测到在其上或附近的触摸操作后，传送给处理器380以确定触摸事件的类型，随后处理器380根据触摸事件的类型在显示面板341上提供相应的视觉输出。虽然在图4中，触敏表面331与显示面板341是作为两个独立的部件来实现输入和输出功能，但是在某些实施例中，可以将触敏表面331与显示面板341集成而实现输入和输出功能。
终端设备300还可包括至少一种传感器350，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板341的亮度，接近传感器可在终端设备300移动到耳边时，关闭显示面板341和/或背光。作为运动传感器的一种，重力加速度传感器可检测各个方向上（一般为三轴）加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用（比如横竖屏切换、相关游戏、磁力计姿态校准）、振动识别相关功能（比如计步器、敲击）等; 至于终端设备300还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器，在此不再赘述。
音频电路360、扬声器361，传声器362可提供用户与终端设备300之间的音频接口。音频电路360可将接收到的音频数据转换后的电信号，传输到扬声器361，由扬声器361转换为声音信号输出；另一方面，传声器362将收集的声音信号转换为电信号，由音频电路360接收后转换为音频数据，再将音频数据输出处理器380处理后，经RF电路310以发送给比如另一终端，或者将音频数据输出至存储器320以便进一步处理。音频电路360还可能包括耳塞插孔，以提供外设耳机与终端设备300的通信。
终端设备300通过传输模块370（例如Wi-Fi模块）可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图4示出了传输模块370，但是可以理解的是，其并不属于终端设备300的必须构成，完全可以根据需要在不改变发明的本质的范围内而省略。
处理器380是终端设备300的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器320内的软件程序和/或模块，以及调用存储在存储器320内的数据，执行终端设备300的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器380可包括一个或多个处理核心；在一些实施例中，处理器380可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器380中。
终端设备300还包括给各个部件供电的电源390（比如电池），在一些实施例中，电源可以通过电源管理系统与处理器380逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。电源390还可以包括一个或一个以上的直流或交流电源、再充电系统、电源故障检测电路、电源转换器或者逆变器、电源状态指示器等任意组件。
尽管未示出，终端设备300还可以包括摄像头（如前置摄像头、后置摄像头）、蓝牙模块等，在此不再赘述。具体在本实施例中，终端设备的显示单元是触摸屏显示器，终端设备还包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行一个或者一个以上程序包含用于进行以下操作的指令：
获取待显示帧的灰度值，确定显示面板的发光阶段；
当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号；
通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
具体实施时，以上各个模块可以作为独立的实体来实现，也可以进行任意组合，作为同一或若干个实体来实现，以上各个模块的具体实施可参见前面的方法实施例，在此不再赘述。
本领域普通技术人员可以理解，上述实施例的各种方法中的全部或部分步骤可以通过指令来完成，或通过指令控制相关的硬件来完成，该指令可以存储于一计算机可读存储介质中，并由处理器进行加载和执行。
为此，本申请实施例提供一种存储介质，其中存储有多条指令，该指令能够被处理器进行加载，以执行本申请实施例所提供的任一种显示面板的调光方法中的步骤。
其中，该存储介质可以包括：只读存储器（ROM，Read Only Memory）、随机存取记忆体（RAM，Random Access Memory）、磁盘或光盘等。
由于该存储介质中所存储的指令，可以执行本申请实施例所提供的任一种显示面板的调光方法中的步骤，因此，可以实现本申请实施例所提供的任一种显示面板的调光方法所能实现的有益效果，详见前面的实施例，在此不再赘述。
以上各个操作的具体实施可参见前面的实施例，在此不再赘述。
以上对本发明实施例所提供的一种显示面板进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (16)

  1. 一种显示面板的调光方法，其包括：
    获取待显示帧的灰度值，确定显示面板的发光阶段；
    当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号；
    通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
  2. 根据权利要求1所述的显示面板的调光方法，其中还包括：
    当所述发光阶段为第二调光阶段时，根据所述待显示帧的灰度值确定发光信号；
    通过所述发光信号控制所述显示面板发光。
  3. 根据权利要求2所述的显示面板的调光方法，其中所述根据所述待显示帧的灰度值确定发光信号，包括：
    根据所述待显示帧的灰度值生成所述调光信号以控制所述发光信号的输入。
  4. 根据权利要求3所述的显示面板的调光方法，其中所述控制信号与所述发光信号同步输入，所述控制信号的频率与所述调光信号频率相同，所述控制信号的幅值小于所述发光信号的幅值，且所述控制信号的幅值的方向与所述发光信号的幅值方向相反。
  5. 根据权利要求3所述的显示面板的调光方法，其中在所述第一发光阶段，根据所述调光信号的占空比和所述控制信号的幅值控制显示面板的显示灰度值；或
    在所述第一发光阶段，根据所述控制信号的幅值控制显示面板的显示灰度。
  6. 根据权利要求3所述的显示面板的调光方法，其中在所述第二发光阶段，根据所述调光信号的占空比控制显示面板的显示灰度值。
  7. 根据权利要求1所述的显示面板的调光方法，其中
    所述第一调光阶段为所述待显示帧的灰度值不超过所述显示面板最大灰度值的10%时的发光阶段；
    所述第二调光阶段为所述待显示帧的灰度值大于所述显示面板最大灰度值的10%时的发光阶段。
  8. 一种显示面板的调光装置，其包括：
    一输入单元，用于输入发光信号；
    一调光单元，用于根据待显示帧的灰度值生成调光信号以控制所述发光信号的输入；
    一低灰阶控制单元，用于在第一调光阶段，根据待显示帧的灰度值生成控制信号并与所述发光信号叠加；以及
    一发光单元，用于根据叠加后的发光信号控制所述显示面板发光。
  9. 一种存储介质，其中所述存储介质中存储有多条指令，所述指令适于由处理器加载以执行：
    获取待显示帧的灰度值，确定显示面板的发光阶段；
    当所述发光阶段为第一调光阶段时，根据所述待显示帧的灰度值确定发光信号和控制信号；
    通过所述发光信号中叠加所述控制信号以控制所述显示面板发光。
  10. 根据权利要求9所述的存储介质，其中
    当所述发光阶段为第二调光阶段时，根据所述待显示帧的灰度值确定发光信号；
    通过所述发光信号控制所述显示面板发光。
  11. 根据权利要求10所述的存储介质，其中所述根据所述待显示帧的灰度值确定发光信号，包括：
    根据所述待显示帧的灰度值生成所述调光信号以控制所述发光信号的输入。
  12. 根据权利要求11所述的存储介质，其中所述控制信号与所述发光信号同步输入，所述控制信号的频率与所述调光信号频率相同，所述控制信号的幅值小于所述发光信号的幅值，且所述控制信号的幅值的方向与所述发光信号的幅值方向相反。
  13. 根据权利要求11所述的存储介质，其中在所述第一发光阶段，根据所述调光信号的占空比和所述控制信号的幅值控制显示面板的显示灰度值；或
    在所述第一发光阶段，根据所述控制信号的幅值控制显示面板的显示灰度。
  14. 根据权利要求11所述的存储介质，其中在所述第二发光阶段，根据所述调光信号的占空比控制显示面板的显示灰度值。
  15. 根据权利要求9所述的存储介质，其中
    所述第一调光阶段为所述待显示帧的灰度值不超过所述显示面板最大灰度值的10%时的发光阶段；
    所述第二调光阶段为所述待显示帧的灰度值大于所述显示面板最大灰度值的10%时的发光阶段。
  16. 一种终端设备，其包括处理器和存储器，所述处理器与所述存储器电性连接，所述存储器用于存储指令和数据，所述处理器用于执行权利要求1所述的显示面板的调光方法中的步骤。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03182793A (ja) * 1989-12-12 1991-08-08 Sharp Corp 表示装置の駆動方法
CN102332247A (zh) * 2011-11-25 2012-01-25 深圳市摩西尔电子有限公司 一种调节led灰度的方法
US20130207954A1 (en) * 2012-02-13 2013-08-15 Samsung Mobile Display Co., Ltd. Power supply device, organic light emitting display device having the same, and method of supplying power
CN104103235A (zh) * 2013-04-01 2014-10-15 三星显示有限公司 有机发光显示设备及其驱动方法
CN112735343A (zh) * 2021-01-04 2021-04-30 成都中电熊猫显示科技有限公司 发光元器件调光控制方法、装置及显示装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001013902A (ja) * 1999-06-28 2001-01-19 Nec Home Electronics Ltd Ｃｒｔ表示装置
CN1366656A (zh) * 2000-04-25 2002-08-28 皇家菲利浦电子有限公司 可实现多种灰度等级的显示装置的驱动
JP5506843B2 (ja) * 2012-03-30 2014-05-28 ルネサスエレクトロニクス株式会社 自発光表示用駆動回路
CN111210778A (zh) * 2018-11-22 2020-05-29 海信视像科技股份有限公司 一种背光源驱动信号调制的方法和装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03182793A (ja) * 1989-12-12 1991-08-08 Sharp Corp 表示装置の駆動方法
CN102332247A (zh) * 2011-11-25 2012-01-25 深圳市摩西尔电子有限公司 一种调节led灰度的方法
US20130207954A1 (en) * 2012-02-13 2013-08-15 Samsung Mobile Display Co., Ltd. Power supply device, organic light emitting display device having the same, and method of supplying power
CN104103235A (zh) * 2013-04-01 2014-10-15 三星显示有限公司 有机发光显示设备及其驱动方法
CN112735343A (zh) * 2021-01-04 2021-04-30 成都中电熊猫显示科技有限公司 发光元器件调光控制方法、装置及显示装置

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