WO2022095409A1 - 亮度调节方法、亮度调节装置、显示面板和显示装置 - Google Patents

亮度调节方法、亮度调节装置、显示面板和显示装置 Download PDF

Info

Publication number
WO2022095409A1
WO2022095409A1 PCT/CN2021/094431 CN2021094431W WO2022095409A1 WO 2022095409 A1 WO2022095409 A1 WO 2022095409A1 CN 2021094431 W CN2021094431 W CN 2021094431W WO 2022095409 A1 WO2022095409 A1 WO 2022095409A1
Authority
WO
WIPO (PCT)
Prior art keywords
brightness
display
frame
light
frames
Prior art date
Application number
PCT/CN2021/094431
Other languages
English (en)
French (fr)
Inventor
刘阿强
Original Assignee
北京集创北方科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京集创北方科技股份有限公司 filed Critical 北京集创北方科技股份有限公司
Publication of WO2022095409A1 publication Critical patent/WO2022095409A1/zh

Links

Images

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
    • G09G3/22—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
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
    • 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
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Definitions

  • the present invention relates to the field of display technology, in particular to a brightness adjustment method, a brightness adjustment device, a display panel and a display device.
  • FPD flat panel display devices
  • LCD liquid crystal display device
  • PDP plasma display panel device
  • OLED organic light emitting diode display device
  • EPD electrophoretic display device
  • an organic light emitting diode display device is a self-luminous device capable of displaying an image by light emission of an organic light emitting diode utilizing repolymerization of holes and electrons.
  • the organic light emitting diode display device has characteristics of high-speed response and low power consumption.
  • the organic light emitting diode display device exhibits an excellent viewing angle due to the use of a spontaneous light emitting element. Therefore, the organic light-emitting display device has received attention as a next-generation flat panel display device.
  • a conventional organic light emitting diode display device has a plurality of pixels disposed on a panel.
  • Each of the plurality of pixels includes an organic light emitting diode (OLED) element and a plurality of transistors each configured to apply current to the organic light emitting diode element.
  • OLED organic light emitting diode
  • Applied to the transistors of the corresponding pixels are gate scan signals, EM signals, and source data signals for controlling on/off of the OLED elements.
  • FIG. 1 shows a schematic circuit diagram of an organic light emitting diode display device according to the prior art.
  • the organic light emitting diode display device includes shift registers SR1 and SR2 and an EM signal control circuit INV coupled to the shift registers SR1 and SR2.
  • the shift registers SR1 and SR2 generate scan signals Scan1 and Scan2.
  • the EM signal control circuit INV generates an EM signal by using emission power source voltages EVGH and EVGL, a clock signal G1CLK2 and a scan signal Scan1.
  • FIG. 2 shows a schematic circuit diagram of an EM signal control circuit in the organic light emitting diode display device according to FIG. 1
  • FIG. 3 shows a schematic diagram of waveforms of corresponding signals obtained according to the operation of the EM signal control circuit of FIG. 2 .
  • the voltage of the first emission power source EVGH and the voltage of the first gate power source GVGH are respectively 14V
  • the voltage of the second emission power source EVGL and the voltage of the second gate power source GVGL are respectively -6V
  • the set signal SET and the reset signal RESET are a low voltage level of -6V and a high voltage level of 14V, respectively.
  • a scan signal Scan1 of -6V is applied to the QB node as a set signal SET during a time period "t1". Due to the application of the set signal SET during the time period "t1", a voltage level of -6V is generated on the QB node and the transistor T11 is turned on, and the first emission power supply EVGH is output as an EM signal through the output node NOUT. Since the voltage level of -6V on the QB node also turns on the transistor T13, the voltage level of the first gate power supply GVGH (ie, the voltage level of 14V) is generated on the Q node, so the transistor T12 is turned off. Accordingly, as illustrated in FIG. 3 , the first emission power source EVGH of 14V having a level opposite to the set signal SET of ⁇ 6V is output as the EM signal during the time period “t1”.
  • the clock signal CLK2 of -6V is applied to the gate of the transistor T14 as the reset signal RESET, and the set signal SET of 14V is applied to the QB node. Therefore, transistor T14 is turned on and produces a voltage level of -6V on the Q node. Therefore, the transistor T12 is turned on and the second emission power source EVGL of -6V is output as the EM signal. At this time, the voltage level of -6V on the Q node is held by the capacitor C. Therefore, although the reset signal RESET is periodically applied after the time period "t2", the voltage level of the EM signal is maintained at -6V due to the voltage level of -6V maintained by the capacitor C.
  • the organic light emitting diode display device can adjust the brightness of the panel according to the external illuminance, so as to improve power consumption and image quality in a low illuminance environment.
  • This brightness adjustment can be achieved by controlling the duty cycle of the EM signal, by adjusting the on-time period of the EM signal (eg, the time period "t1" described with reference to FIG. 3 ) to adjust the off-time period of the corresponding pixel, by Adjust the conduction time of the light-emitting diodes in one frame, and then realize the adjustment of the screen brightness.
  • the skip frame method as an example for the display driver, it usually refreshes one frame of data and then waits for N frames to refresh the next frame of image.
  • This working mode takes N+1 frames as a cycle.
  • this N+1 frame The EM signals of the frames all use the same duty cycle, and the brightness of the N+1 frame images varies in each frame due to the different leakage of the light-emitting diodes, which in turn causes the screen to flicker.
  • the present disclosure provides a brightness adjustment method, a brightness adjustment device, a display panel and a display device, which can compensate for screen flicker caused by different leakage conditions of light-emitting diodes in refreshing a frame of data, and improve the display effect.
  • the present disclosure provides a brightness adjustment method, including:
  • N is a positive integer not less than 1.
  • the brightness adjustment method includes:
  • the display images of the N frames are inserted.
  • the aforementioned setting of the brightness of the aforementioned N frames according to the ratio of the difference between the target brightness of the next frame and the aforementioned initial brightness includes:
  • the light-emitting control signal is used to drive the pixels in the display image of the current display frame to emit light
  • the aforementioned effective duty ratio is used to represent the display brightness of the frame corresponding to the effective duty ratio.
  • the output waveform of the aforementioned light-emitting control signal includes a plurality of valid pulses.
  • the foregoing ratio setting is switched to the effective duty cycle of the light-emitting control signal received corresponding to each of the foregoing N frames including:
  • the foregoing ratio setting is switched to the effective duty cycle of the light-emitting control signal received corresponding to each of the foregoing N frames including:
  • the present disclosure provides a brightness adjustment device, comprising:
  • a determination module used for determining the initial brightness of the display image of the current frame and the target brightness of the display image of the next frame after the refresh when the display image of the current frame is refreshed;
  • control module connected to the aforementioned determining module, and configured to set the display brightness corresponding to the inserted N frames according to the ratio of the difference between the aforementioned target brightness and the aforementioned initial brightness;
  • an adjustment module connected with the aforementioned control module, and configured to adjust the respective display parameters when driving the aforementioned N frames of display according to the set display brightness corresponding to the N frames,
  • N is a positive integer not less than 1.
  • the aforementioned display parameter is the effective duty ratio of the light-emitting control signal received corresponding to each of the aforementioned N frames, and the light-emitting control signal is used to drive the pixels in the display image of the current display frame to emit light.
  • the output waveform of the aforementioned light-emitting control signal includes a plurality of valid pulses.
  • the aforementioned adjustment module includes:
  • a calculation unit configured to calculate the duty ratio of the light-emitting control signal driving the display screen of each of the N frames according to the display brightness corresponding to the inserted N frames;
  • the pulse adjustment unit is connected to the calculation unit, and is configured to adjust the width of at least one valid pulse in the light-emitting control signal for driving and switching to the display screen of each frame of the N frames according to the calculation result of the calculation unit.
  • the present disclosure also provides a display panel, comprising:
  • each of the light-emitting control lines corresponding to and electrically connected to at least one row of sub-pixels
  • a multi-level cascaded shift register unit the multi-level cascaded shift register unit is arranged in a one-to-one correspondence with the aforementioned plurality of light-emitting control lines and is electrically connected, and the shift register unit of each level is used for corresponding one of the aforementioned light-emitting control lines.
  • the control line transmits the aforementioned light emission control signal.
  • the aforementioned display panel is an organic light-emitting display panel.
  • the present disclosure also provides a display device, including:
  • the beneficial effects of the present disclosure are as follows: in a brightness adjustment method, a brightness adjustment device, a display panel and a display device provided by the present disclosure, the initial brightness of the current frame is obtained first; the data of the current frame is refreshed after waiting for N frames, and the During this period, the display brightness of the N frames is also set according to the difference ratio between the target brightness of the next frame and the initial brightness, where N is a positive integer not less than 1.
  • the effective duty ratio is used to represent the display brightness of the frame corresponding to the effective duty ratio, so that each of the inserted
  • the independent adjustment of the effective duty cycle of the frame luminescence control signal (EM) enables smooth transition of the brightness of the N-frame display images inserted before the current frame is refreshed to the next frame, ensuring stable changes in the brightness of the display images of consecutive frames, making up for the existing In the technology, the screen flickering due to the leakage of light-emitting diodes in a frame of data is refreshed, which improves the display effect.
  • FIG. 1 shows a schematic circuit diagram of an organic light emitting diode display device according to the prior art
  • FIG. 2 shows a schematic circuit diagram of an EM signal control circuit in the organic light emitting diode display device according to FIG. 1;
  • FIG. 3 shows a schematic diagram of corresponding signal waveforms obtained according to the operation of the EM signal control circuit of FIG. 2;
  • FIG. 4 shows a schematic flowchart of a brightness adjustment method provided according to an embodiment of the present disclosure
  • FIG. 5 shows a schematic flowchart of sub-step S130 in the brightness adjustment method according to FIG. 4;
  • FIG. 6 shows a schematic flowchart according to an embodiment of sub-step S130 of FIG. 5;
  • FIG. 7 shows a schematic structural diagram of a brightness adjustment device provided according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a display panel provided according to an embodiment of the present disclosure.
  • FIG. 4 shows a schematic flowchart of a brightness adjustment method according to an embodiment of the present disclosure
  • FIG. 5 shows a schematic flowchart of sub-step S130 in the brightness adjustment method according to FIG. 4 .
  • the present disclosure is mainly aimed at the problem of screen flicker caused by different leakage conditions of light-emitting diodes in refreshing a frame of data in the prior art. Therefore, the brightness adjustment method and the brightness adjustment device described in the embodiments of the present disclosure are mainly Applied in organic light-emitting display panels.
  • an aspect of the present disclosure provides a brightness adjustment method according to an embodiment, including:
  • Sub-step S110 Obtain the initial brightness of the current frame.
  • the brightness level of the organic light emitting display panel and the maximum gray-scale brightness corresponding to each brightness level of the organic light emitting display panel need to be set before leaving the factory.
  • the organic light-emitting display panel optionally has, for example, 256 (0-255) brightness levels, and each brightness level is set with a minimum gray level The minimum gray-level brightness of each brightness level is 0, and the maximum gray-level brightness of different brightness levels is different. The higher the brightness level value, the higher the corresponding maximum gray-level brightness.
  • the initial brightness corresponding to the display image of the current frame (the highest gray-scale brightness corresponding to the brightness level) is obtained first.
  • Sub-step S120 refresh the data of the current frame after waiting for N frames, and display the next frame of image.
  • the current frame can be the screen display frame of the aforementioned organic light-emitting display panel at any time, and after waiting for N frames, the data of the current frame is refreshed, and the next frame of image is displayed, aiming to obtain the next frame.
  • the brightness of a frame is displayed.
  • N is a positive integer not less than 1.
  • Sub-step S130 Calculate the difference between the target brightness of the next frame and the aforementioned initial brightness, and set the display brightness of the aforementioned N frames according to the ratio of the difference.
  • setting the display brightness of the aforementioned N frames according to the aforementioned difference ratio specifically includes:
  • Sub-step S131 Acquire a light-emitting control signal.
  • the light emission control signal is used to drive the pixels in the display picture of the current display frame to emit light.
  • the output waveform of the lighting control signal includes a plurality of valid pulses.
  • Sub-step S132 Set according to the difference ratio to switch to the effective duty ratio of the light-emitting control signal received corresponding to each of the preceding N frames.
  • the aforementioned effective duty ratio is used to represent the display brightness of the frame corresponding to the effective duty ratio.
  • the driving mode of the light-emitting control signal EM is level-triggered. Specifically, for example, when the light-emitting control signal EM is at a high level Usually valid; invalid at low level, and the way to set the effective duty cycle of the light-emitting control signal EM can be by adjusting the high level in at least one pulse period of the light-emitting control signal EM of each frame of display screen switched by the drive width or low level width.
  • the foregoing ratio setting is switched to the effective duty cycle of the light-emitting control signal received corresponding to each of the foregoing N frames, in one embodiment, may include:
  • it can also include:
  • sub-step S130 for an application scenario in which N frames of data are inserted when the display driver chip normally refreshes one frame of data to the next frame.
  • a single pixel constitutes a horizontal scan line, and the stacking of the horizontal scan lines in the vertical direction forms a complete picture.
  • the refresh rate of the display is controlled by the graphics card DAC. After the graphics card DAC completes a frame scan, a vertical synchronization signal Vsync will be generated.
  • the organic light emitting display panel includes, for example, a timing controller that can receive digital video data (RGB), a vertical synchronization signal Vsync (and a horizontal synchronization signal Hsync) from a system disposed inside or outside the organic light emitting display panel ) and the clock signal (CLK).
  • RGB digital video data
  • Vsync vertical synchronization signal
  • Hsync horizontal synchronization signal
  • each frame includes two periods of the light emission control signal EM, and the period of the light emission control signal EM is assumed to be the same for one frame in which data is refreshed in normal display and two frames for insertion.
  • the low level width of the light-emitting control signal EM in one pulse period is W1.
  • one frame of data is usually refreshed and then waited for N frames are used to refresh the next frame of image. This working mode takes N+1 frames as a cycle.
  • the light-emitting control signals EM of these N+1 frames all use the same duty cycle, and in each frame Due to the different leakage conditions of the light-emitting diodes, the brightness of the N+1 frame images is different, which in turn causes the screen to flicker.
  • the effective duty cycle (ie, the low level) of the light-emitting control signal EM received corresponding to each frame of the N frames is set. width).
  • the low level width of the light-emitting control signal EM of the inserted first frame (inserted frame 1) in one pulse period is set to W2
  • the low-level width of W3 is set as W3, and W1, W2 and W3 can be independently and flexibly configured through registers.
  • the proportional relationship between the values depends on the difference between the target brightness and the aforementioned initial brightness, that is, the ratio of the leakage current of the LEDs obtained by the three frames of testing.
  • the frame rate is changed by inserting frames, and the display brightness of each inserted frame of the display image is set to ensure the stable change of the brightness of the continuous frame display image, and the display effect and its stability are improved.
  • FIG. 7 shows a schematic structural diagram of a brightness adjustment device provided according to an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a brightness adjustment device 100 , which is mainly applied to an organic light emitting display panel and can be used to execute the brightness adjustment method described in the above embodiments.
  • the brightness adjustment device 100 includes: a determination module 110, a control module 120 and an adjustment module 130, wherein the determination module 110 is configured to determine the initial brightness and refresh rate of the display image of the current frame when the display image of the current frame is refreshed The target brightness of the next frame to be displayed; the control module 120 is connected to the determination module 110, and is used to set the display brightness corresponding to the inserted N frames according to the ratio of the difference between the aforementioned target brightness and the aforementioned initial brightness; and the adjustment module 130 is the same as the aforementioned The control module 120 is connected to the control module 120 for adjusting the corresponding display parameters when driving the aforementioned N frames according to the display brightness corresponding to the set N frames,
  • N is a positive integer not less than 1.
  • the aforementioned display parameter is the effective duty ratio of the light-emitting control signal EM received corresponding to each of the aforementioned N frames, and the light-emitting control signal EM is used to drive the pixels in the display image of the current display frame to emit light.
  • the output waveform of the aforementioned light-emitting control signal EM includes a plurality of valid pulses.
  • the adjustment module 130 includes: a calculation unit 131 and a pulse adjustment unit 132, wherein the calculation unit 131 is configured to set the display brightness corresponding to the inserted N frames according to the foregoing ratio to calculate and drive the display image of each frame in the foregoing N frames The duty cycle of the light-emitting control signal EM.
  • the driving mode of the light-emitting control signal EM is level-triggered.
  • the light-emitting control signal EM is valid when the light-emitting control signal EM is at a high level; it is invalid when the light-emitting control signal EM is set at a low level.
  • the effective duty cycle can be achieved by adjusting the high-level width or the low-level width in at least one pulse period of the light-emitting control signal EM of each frame of the display image switched by the drive.
  • the pulse adjustment unit 132 is connected to the calculation unit 131, and is used to adjust the width of at least one valid pulse (such as the pulse period) in the light-emitting control signal EM that is driven to switch to the display screen of each frame of the N frames according to the calculation result of the calculation unit 131. low-level width in ).
  • the light-emitting time of the organic light-emitting diode is adjusted by changing the duty ratio of the effective pulse of the light-emitting control signal EM for driving each frame of the display picture, so as to change the brightness of the organic light-emitting display panel corresponding to the display picture of the current display frame, and
  • the brightness adjustment device also realizes the smooth change of the brightness of the continuous frame display image, and improves the display effect of the organic light-emitting display panel.
  • FIG. 8 is a schematic structural diagram of a display panel provided according to an embodiment of the present disclosure.
  • the present disclosure further provides a display panel 10, preferably, the display panel 10 is an organic light-emitting display panel, and the organic light-emitting display panel 10 integrates the brightness adjustment device described in any of the above embodiments (not shown), the brightness adjustment device is used to execute the brightness adjustment method described in the above-mentioned embodiment, and therefore the repeated points will not be repeated.
  • the organic light emitting display panel 10 described in this embodiment may further include:
  • the plurality of pixels P are disposed on the intersections of the plurality of gate lines GL and the plurality of data lines DL.
  • Each pixel P may include a switch transistor driven by a corresponding gate line GL, a drive transistor turned on by an image signal supplied through the switch transistor, a light emitting transistor driven by a light emission control signal EM, and an organic light emitting diode, and
  • each of the light-emitting control lines 11 corresponding to and electrically connected to at least one row of sub-pixels P;
  • a multi-stage cascaded shift register unit 200 the multi-stage cascaded shift register unit 200 is arranged in a one-to-one correspondence with the aforementioned plurality of light-emitting control lines 11 and is electrically connected, and the shift register unit of each stage may include a configuration
  • a plurality of shift registers for generating scan signals are used to transmit the aforementioned light-emitting control signal EM to a corresponding one of the aforementioned light-emitting control lines 11 .
  • the image signal supplied through the data line DL may be transferred to the driving transistor through the switching transistor turned on by the scan signal supplied through the gate line GL.
  • the organic light emitting diode may emit light by the current flowing therein through the driving transistor.
  • the organic light-emitting display panel 10 may further include a light-emitting driving chip 400 for configuring the clock signals CLK1 and CLK2 required by the multi-stage cascaded shift register units 200 , and applying shift to the first-stage shift register unit 200 Trigger signal IN. Based on the shift trigger signal IN transmitted by the light-emitting driving chip 400 , the shift register unit 200 outputs light-emitting control signals EM1 , EM2 , . . . EMn.
  • the light-emitting driving chip 400 can adjust the brightness level of the organic light-emitting display panel 10 by adjusting the waveform (duty ratio) of the shift trigger signal IN.
  • the organic light emitting display panel 10 may further include a control unit 300 configured to transmit the EM signal to the emission control signal EM of the corresponding pixel P, and the control unit 300 may include a plurality of control circuits (not shown) for the emission control signals. output), the control circuits of the lighting control signals may be respectively connected to the plurality of shift register units 200 in a one-to-one correspondence, and may generate the lighting control signals EM1 , EM2 , . . . EMn by using the output signals of the plurality of shift registers.
  • the light-emitting driver chip 400 in the organic light-emitting display panel 10 will pre-determine the target brightness of the next frame display screen after the switching and the initial brightness of the current frame display screen, and the light-emitting driver chip 400 can be configured
  • the highest grayscale brightness corresponding to different brightness levels and the effective duty ratio of the lighting control signal are stored, and the lighting driver chip 400 sets the display of each frame in the inserted N frames according to the ratio of the difference between the target brightness and the initial brightness.
  • the duty cycle of the light-emitting control signal EM of the picture and adjust the shift trigger signal IN of the corresponding light-emitting control signal EM so that the multi-stage cascaded shift register unit 200 outputs the light-emitting control signal EM1 corresponding to driving the current display frame , EM2, ...EMn.
  • the present disclosure also provides a display device (not shown), wherein the display device includes, for example, the organic light emitting display panel described in the foregoing embodiments.
  • the display device may be, for example, but not limited to, a display device of a mobile phone, a tablet computer, a computer, a display device applied to a smart wearable device, or a display device applied to vehicles such as automobiles.
  • the display device includes the organic light-emitting display panel included in the display device of the present disclosure, and the organic light-emitting display panel performs the brightness adjustment method described in the foregoing embodiments during the brightness adjustment process, it is deemed to fall within the scope of the present application. within the scope of protection.
  • the brightness adjustment method, brightness adjustment device, display panel and display device provided by the embodiments of the present disclosure can firstly obtain the initial brightness of the current frame; secondly, when determining the target brightness of each pixel in the next frame and the corresponding
  • the difference value of the aforementioned initial brightness is greater than the preset threshold, according to the aforementioned data of the current frame, before the aforementioned current frame is refreshed to the aforementioned next frame, the display screen of N frames is inserted, and the data of the current frame is refreshed after waiting for N frames, And display the next frame of image; and during this period, set the display brightness of the aforementioned N frames according to the ratio of the difference between the target brightness of the next frame and the aforementioned initial brightness, where N is a positive integer not less than 1.
  • the luminescence control signal (EM) used to drive the pixels in the display frame of the current display frame to emit light
  • EM luminescence control signal
  • the switch according to the ratio of the difference
  • the effective duty ratio is used to represent the display brightness of the frame corresponding to the effective duty ratio
  • the independent adjustment of the effective duty cycle of one frame of luminous control signal (EM) uses the display screen of each frame of the N frames to define the difference in brightness change that the human eye can perceive before and after the refresh, so that the current frame is refreshed to The brightness of the N-frame display images inserted before the next frame is smoothly transitioned.
  • the brightness of the display images of consecutive frames is guaranteed to change steadily, making up for the refreshment in the existing technology.
  • the screen flickers due to different leakage conditions of the light-emitting diodes, which improves the display effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

本发明涉及显示技术领域，提供了一种亮度调节方法、亮度调节装置、显示面板和显示装置，首先获取当前帧的初始亮度；其次在等待N帧后刷新所述当前帧的数据，并进行下一帧图像的显示；而在此期间还计算该下一帧的目标亮度与前述初始亮度的差值，并根据该差值比例设置前述N帧的显示亮度，其中，N为不小于1的正整数。由此可使当前帧刷新至下一帧之前插入的N帧显示画面的亮度平滑过渡，保证了连续帧显示画面的亮度稳定变化，弥补现有技术里刷新一帧数据中由于发光二极管漏电情况不同而导致的屏幕闪烁，提高了显示效果。

Description

亮度调节方法、亮度调节装置、显示面板和显示装置
本申请要求了申请日为2020年11月05日、申请号为2020112219496、名称为“亮度调节方法、亮度调节装置、显示面板和显示装置”的中国发明申请的优先权，并且通过参照上述中国发明申请的全部说明书、权利要求、附图和摘要的方式，将其引用于本申请。
技术领域
本发明涉及显示技术领域，具体涉及一种亮度调节方法、亮度调节装置、显示面板和显示装置。
背景技术
包括移动电话、平板PC、笔记本计算机等在内的各种类型的电子设备使用平板显示装置(FPD)。FPD的示例有：液晶显示装置(LCD)、等离子体显示面板装置(PDP)、有机发光二极管显示装置(OLED)和电泳显示装置(EPD)等。
在平板显示装置当中，有机发光二极管显示装置是能够通过利用空穴和电子的再聚合的有机发光二极管的发光来显示图像的自发发光装置。有机发光二极管显示装置具有高速响应和低功耗的特性。有机发光二极管显示装置由于使用自发发光元件而显示出优异的视角。因此，有机发光显示装置作为下一代平板显示装置而受到重视。
常规有机发光二极管显示装置具有设置在面板上的多个像素。多个像素中的每一个像素均包括有机发光二极管(OLED)元件和各自被配置为向有机发光二极管元件施加电流的多个晶体管。被施加到相应像素的晶体管的是用于控制OLED元件的接通/关断的栅极扫描信号、EM信号和源极数据信号。
图1示出根据现有技术的有机发光二极管显示装置的电路示意图。如图1所示，有机发光二极管显示装置包括移位寄存器SR1和SR2以及 联接到移位寄存器SR1和SR2的EM信号控制电路INV。
如图1所示，移位寄存器SR1和SR2例如通过使用栅极电源电压G1VGH、G1VGL、G2VGH和G2VGL、栅极起始电压G1VST和G2VST以及时钟信号G1CLK1～G1CLK4和G2CLK1～G2CLK4产生扫描信号Scan1和Scan2。EM信号控制电路INV通过使用发射电源(emission power source)电压EVGH和EVGL、时钟信号G1CLK2和扫描信号Scan1产生EM信号。
图2示出根据图1的有机发光二极管显示装置中EM信号控制电路的电路示意图，且图3示出根据图2的EM信号控制电路的操作获得相应信号的波形示意图。在下文中假定第一发射电源EVGH的电压和第一选通电源(gate power source)GVGH的电压分别为14V，并且第二发射电源的电压EVGL和第二选通电源GVGL的电压分别为-6V。另外，假定置位信号SET和复位信号RESET分别是-6V的低电压电平和14V的高电压电平。
参照图2和图3，-6V的扫描信号Scan1在时间区段“t1”期间作为置位信号SET被施加到QB节点。由于在时间区段“t1”期间施加置位信号SET，导致在QB节点上产生-6V的电压电平并且使晶体管T11导通，并且第一发射电源EVGH作为EM信号通过输出节点NOUT被输出。由于QB节点上的-6V的电压电平也使晶体管T13导通，因此在Q节点上产生第一选通电源GVGH的电压电平(即，14V的电压电平)，因此晶体管T12截止。相应地，如图3所例示，具有与-6V的置位信号SET相反的电平的14V的第一发射电源EVGH在时间区段“t1”期间作为EM信号被输出。
接下来，在时间区段“t2”期间，-6V的时钟信号CLK2作为复位信号RESET被施加到晶体管T14的栅极，并且14V的置位信号SET被施加到QB节点。因此，晶体管T14导通并且在Q节点上产生-6V的电压电平。因此，晶体管T12导通并且-6V的第二发射电源EVGL作为EM信号被输出。此时，Q节点上的-6V的电压电平通过电容器C而保持。因此，尽管在时间区段“t2”之后周期性地施加复位信号RESET，然而 EM信号的电压电平由于通过电容器C保持的-6V的电压电平而保持为-6V。
根据现有技术的有机发光二极管显示装置能够根据外部照度来调整面板的亮度，以便在低照度环境下改进功耗和图像质量。这种亮度调整可以通过控制EM信号的占空比，利用调整EM信号的导通时间区段(例如，参照图3描述的时间区段“t1”)来调整相应像素的截止时间区段，通过调整一帧中发光二极管的导通时间，进而实现屏幕亮度的调节。
以显示驱动采用skip frame的方式为例，通常进行刷新一帧数据然后等待N帧进行下一帧图像的刷新，这种工作模式以N+1帧为一个循环，现有技术中这N+1帧的EM信号都采用相同的占空比，而每一帧中由于发光二极管漏电情况不同，导致N+1帧图像的亮度各不相同，进而使得屏幕产生闪烁。
发明内容
为了解决上述技术问题，本公开提供了一种亮度调节方法、亮度调节装置、显示面板和显示装置，可以弥补刷新一帧数据中由于发光二极管漏电情况不同而导致的屏幕闪烁，提高显示效果。
一方面本公开提供了一种亮度调节方法，包括：
获取当前帧的初始亮度；
在等待N帧后刷新该当前帧的数据，并进行下一帧图像的显示；
根据该下一帧的目标亮度与前述初始亮度的差值比例设置前述N帧的显示亮度，
其中，N为不小于1的正整数。
优选地，所述在等待N帧后刷新所述当前帧的数据中，该亮度调节方法包括：
计算所述下一帧的目标亮度与所述当前帧的初始亮度的差值；
判定所述差值大于预设阈值时，在前述当前帧刷新至前述下一帧之前，插入前述N帧的显示画面。
优选地，前述根据该下一帧的目标亮度与前述初始亮度的差值比例 设置前述N帧的亮度包括：
获取发光控制信号，该发光控制信号用于驱动当前显示帧显示画面中的像素发光；
根据前述差值比例设置切换至前述N帧中每一帧所对应接收的发光控制信号的有效占空比，
前述有效占空比用以表征该有效占空比对应帧的显示亮度。
优选地，前述发光控制信号的输出波形包括多个有效脉冲。
优选地，前述比例设置切换至前述N帧中每一帧所对应接收的发光控制信号的有效占空比包括：
确定前述目标亮度与前述初始亮度的差值为正；
逐渐增加驱动切换至当前显示帧的发光控制信号中至少一个有效脉冲的宽度，以使当前发光控制信号的有效占空比大于驱动前一帧显示画面的发光控制信号的有效占空比。
优选地，前述比例设置切换至前述N帧中每一帧所对应接收的发光控制信号的有效占空比包括：
确定前述目标亮度与前述初始亮度的差值为负；
逐渐减小驱动切换至当前显示帧的发光控制信号中至少一个有效脉冲的宽度，以使当前的有效占空比小于驱动前一帧显示画面的发光控制信号的有效占空比。
另一方面本公开提供了一种亮度调节装置，包括：
确定模块，用于在当前帧的显示画面刷新时，确定当前帧显示画面的初始亮度和刷新后下一帧显示画面的目标亮度；
控制模块，与前述确定模块连接，用于根据前述目标亮度与前述初始亮度的差值比例设置插入的N帧对应的显示亮度；
调节模块，与前述控制模块连接，用于根据设置的N帧对应的显示亮度调节驱动前述N帧显示时各自对应的显示参数，
其中，N为不小于1的正整数。
优选地，前述显示参数为前述N帧中每一帧所对应接收的发光控制信号的有效占空比，且该发光控制信号用于驱动当前显示帧显示画面中 的像素发光。
优选地，前述发光控制信号的输出波形包括多个有效脉冲。
优选地，前述调节模块包括：
计算单元，用于根据前述比例设置插入的N帧对应的显示亮度计算驱动前述N帧中每一帧的显示画面的发光控制信号的占空比；
脉冲调节单元，与该计算单元连接，用于根据该计算单元的计算结果调节驱动切换至前述N帧中每一帧显示画面的发光控制信号中至少一个有效脉冲的宽度。
另一方面本公开还提供了一种显示面板，包括：
如前所述的亮度调节装置，以及
多条发光控制线，每一条前述发光控制线与至少一行子像素对应设置并电连接；
多级级联的移位寄存器单元，该多级级联的移位寄存器单元与前述多条发光控制线一一对应设置并且电连接，每一级的移位寄存器单元用于给对应一条前述发光控制线传输前述发光控制信号。
优选地，前述显示面板为有机发光显示面板。
另一方面本公开还提供了一种显示装置，其中，包括：
如前所述的显示面板。
本公开的有益效果是：本公开提供的一种亮度调节方法、亮度调节装置、显示面板和显示装置，首先获取当前帧的初始亮度；其次在等待N帧后刷新该当前帧的数据，并进行下一帧图像的显示；而在此期间还根据该下一帧的目标亮度与前述初始亮度的差值比例设置前述N帧的显示亮度，其中，N为不小于1的正整数。具体地，通过获取用于驱动当前显示帧显示画面中的像素发光的发光控制信号(EM)，并计算该下一帧的目标亮度与前述初始亮度的差值，再根据该差值比例设置切换至前述N帧中每一帧所对应接收的发光控制信号(EM)的有效占空比，该有效占空比用以表征该有效占空比对应帧的显示亮度，以此通过插入的每一帧发光控制信号(EM)的有效占空比的独立调节，使当前帧刷新至下一帧之前插入的N帧显示画面的亮度平滑过渡，保证了连续帧显示画 面的亮度稳定变化，弥补现有技术里刷新一帧数据中由于发光二极管漏电情况不同而导致的屏幕闪烁，提高了显示效果。
附图说明
通过以下参照附图对本公开实施例的描述，本公开的上述以及其他目的、特征和优点将更为清楚。
图1示出根据现有技术的机发光二极管显示装置的电路示意图；
图2示出根据图1的有机发光二极管显示装置中EM信号控制电路的电路示意图；
图3示出根据图2的EM信号控制电路的操作获得的相应信号波形的示意图；
图4示出根据本公开一实施例提供的亮度调节方法的流程示意图；
图5示出根据图4的亮度调节方法中子步骤S130的流程示意图；
图6示出根据图5的子步骤S130的一种实施方式中的流程示意图；
图7示出根据本公开一实施例提供的亮度调节装置的结构示意图；
图8示出根据本公开一实施例提供的显示面板的结构示意图。
具体实施方式
为了便于理解本公开，下面将参照相关附图对本公开进行更全面的描述。附图中给出了本公开的较佳实施例。但是，本公开可以通过不同的形式来实现，并不限于本文所描述的实施例。相反的，提供这些实施例的目的是使对本公开内容的理解更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本公开的技术领域的技术人员通常理解的含义相同。本文在本公开的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本公开。
下面，参照附图对本公开进行详细说明。
图4示出根据本公开一实施例提供的亮度调节方法的流程示意图，图5示出根据图4的亮度调节方法中子步骤S130的流程示意图。
需要说明的是，本公开主要针对现有技术中刷新一帧数据中由于发光二极管漏电情况不同而导致的屏幕闪烁这一问题，因此本公开实施例所记载的亮度调节方法及亮度调节装置主要是应用于有机发光显示面板中。
参考图4，本公开一方面根据一实施例提供的亮度调节方法，包括：
子步骤S110：获取当前帧的初始亮度。
本实施例中，一般有机发光显示面板出厂前需要对有机发光显示面板的亮度等级和每个亮度等级对应的最高灰阶亮度进行设置。基于现有有机发光显示面板多采用8位移位寄存器进行像素发光控制，本实施例中可选地有机发光显示面板例如具有256(0-255)个亮度等级，每个亮度等级设置有最小灰阶亮度和最高灰阶亮度，每个亮度等级的最小灰阶亮度均为0，不同亮度等级的最高灰阶亮度不同，亮度等级值越高则对应的最高灰阶亮度越高。在子步骤S110中，首先获取当前帧显示画面对应的初始亮度(对应亮度等级的最高灰阶亮度)。
子步骤S120：在等待N帧后刷新该当前帧的数据，并进行下一帧图像的显示。
在子步骤S120中，该当前帧可以为任意时刻下，前述有机发光显示面板的屏幕显示帧，而在等待N帧后刷新当前帧的数据，并进行下一帧图像的显示，旨在获取下一帧显示画面的亮度，通过计算前后两帧的相似性，来确定前一帧与当前帧图像中是否有大量的像素点，由亮变暗，或者由暗变亮。当确定前述下一帧各个像素点的目标亮度与对应的前述初始亮度的差值，并在该差值大于预设阈值时，根据前述当前帧的数据在前述当前帧刷新至前述下一帧之前，插入前述N帧的显示画面，通过逐次切换至该N帧的每一帧显示画面定义刷新前后人眼能够感觉到的亮度变化差值，避免发生跳帧时图像变化剧烈，而影响屏幕前观众的观感，保证了连续帧显示画面的亮度稳定变化，提高了显示效果及其稳定性。
其中，N为不小于1的正整数。
子步骤S130：计算该下一帧的目标亮度与前述初始亮度的差值，并根据该差值比例设置前述N帧的显示亮度。
参考图5，在子步骤S130中，根据前述差值比例设置前述N帧的显示亮度具体包括：
子步骤S131：获取发光控制信号。
在子步骤S131中，该发光控制信号用于驱动当前显示帧显示画面中的像素发光。
进一步地，该发光控制信号的输出波形包括多个有效脉冲。
子步骤S132：根据该差值比例设置切换至前述N帧中每一帧所对应接收的发光控制信号的有效占空比。
在子步骤S132中，前述有效占空比用以表征该有效占空比对应帧的显示亮度，例如该发光控制信号EM的驱动方式为电平触发，具体的例如该发光控制信号EM在高电平时有效；在低电平时无效，而设置该发光控制信号EM的有效占空比的方式可以是通过调节驱动切换的每一帧显示画面的发光控制信号EM的至少一个脉冲周期中的高电平宽度或低电平宽度。
前述比例设置切换至前述N帧中每一帧所对应接收的发光控制信号的有效占空比，在一种实施方式中可以包括：
确定前述目标亮度与前述初始亮度的差值为正；
逐渐增加驱动切换至当前显示帧的发光控制信号中至少一个有效脉冲的宽度(如脉冲周期中的低电平宽度)，以使当前的发光控制信号的有效占空比大于驱动前一帧显示画面的发光控制信号的有效占空比。
而在一种实施方式中还可以包括：
确定前述目标亮度与前述初始亮度的差值为负；
逐渐减小驱动切换至当前显示帧的发光控制信号中至少一个有效脉冲的宽度(如脉冲周期中的低电平宽度)，以使当前的有效占空比小于驱动前一帧显示画面的发光控制信号的有效占空比。
参考图6，在子步骤S130的一种实现方式中，对于显示驱动芯片正常刷新一帧数据到下一帧时，插入N帧数据的应用场景。
根据相关技术，从CRT显示器的显示原理来看，单个像素组成了水平扫描线，水平扫描线在垂直方向的堆积形成了完整的画面。而显示器 的刷新率受显卡DAC控制，显卡DAC完成一帧的扫描后就会产生一个垂直同步信号Vsync。
此外，有机发光显示面板例如包括有定时控制器，该定时控制器可以从设置在该有机发光显示面板的内部或外部的系统接收数字视频数据(RGB)、垂直同步信号Vsync(和水平同步信号Hsync)以及时钟信号(CLK)。
如图6所示只展示了插入帧的前两帧。假定每一帧中均包含2个周期的发光控制信号EM，对于正常显示进行数据刷新的1帧和插入的两帧，发光控制信号EM的周期均相同假定为T。在满足上述条件的正常显示中进行数据刷新到下一帧前，发光控制信号EM在一个脉冲周期中的低电平宽度为W1，在旧有的技术方案中，通常进行刷新一帧数据然后等待N帧进行下一帧图像的刷新，这种工作模式以N+1帧为一个循环，现有技术中这N+1帧的发光控制信号EM都采用相同的占空比，而每一帧中由于发光二极管漏电情况不同，导致N+1帧图像的亮度各不相同，进而使得屏幕产生闪烁。
在本实施方式中，根据该下一帧的目标亮度与前述初始亮度的差值比例设置切换至该N帧中每一帧所对应接收的发光控制信号EM的有效占空比(即低电平宽度)。例如插入的第一帧(插入帧1)的发光控制信号EM在一个脉冲周期中的低电平宽度设置为W2，插入的第二帧(插入帧2)的发光控制信号EM在一个脉冲周期中的低电平宽度设置为W3，W1、W2和W3均可通过寄存器进行独立灵活的配置。其数值大小的比例关系取决于目标亮度与前述初始亮度的差值，即这三帧测试得到的发光二极管漏电流大小的比例。以此通过插入帧改变帧率，并设置该插入的每一帧显示画面的显示亮度，来保证连续帧显示画面的亮度稳定变化，提高了显示效果及其稳定性。
图7示出根据本公开一实施例提供的亮度调节装置的结构示意图。
另一方面本公开实施例提供了一种亮度调节装置100，该亮度调节装置主要应用于有机发光显示面板中，可用于执行上述实施例中所述的亮度调节方法。
参考图7，该亮度调节装置100包括：确定模块110、控制模块120和调节模块130，其中，该确定模块110用于在当前帧的显示画面刷新时，确定当前帧显示画面的初始亮度和刷新后下一帧显示画面的目标亮度；控制模块120与该确定模块110连接，用于根据前述目标亮度与前述初始亮度的差值比例设置插入的N帧对应的显示亮度；而调节模块130与前述的控制模块120连接，用于根据设置的N帧对应的显示亮度调节驱动前述N帧显示时各自对应的显示参数，
其中，N为不小于1的正整数。
进一步地，前述显示参数为前述N帧中每一帧所对应接收的发光控制信号EM的有效占空比，且该发光控制信号EM用于驱动当前显示帧显示画面中的像素发光。
进一步地，前述的发光控制信号EM的输出波形包括多个有效脉冲。
进一步地，该调节模块130包括：计算单元131和脉冲调节单元132，其中，该计算单元131用于根据前述比例设置插入的N帧对应的显示亮度计算驱动前述N帧中每一帧的显示画面的发光控制信号EM的占空比。
在一优选地实施方案中，例如该发光控制信号EM的驱动方式为电平触发，具体的例如该发光控制信号EM在高电平时有效；在低电平时无效，而设置该发光控制信号EM的有效占空比的方式可以是通过调节驱动切换的每一帧显示画面的发光控制信号EM的至少一个脉冲周期中的高电平宽度或低电平宽度。
脉冲调节单元132与该计算单元131连接，用于根据该计算单元131的计算结果调节驱动切换至前述N帧中每一帧显示画面的发光控制信号EM中至少一个有效脉冲的宽度(如脉冲周期中的低电平宽度)。
本实施例中，通过改变驱动每一帧显示画面的发光控制信号EM的有效脉冲的占空比来调节有机发光二极管的发光时间，从而改变当前显示帧显示画面对应有机发光显示面板的亮度，并且该亮度调节装置还实现了连续帧显示画面的亮度平滑变化，提高有机发光显示面板的显示效果。
图8示出根据本公开一实施例提供的显示面板的结构示意图。
基于同一发明构思，另一方面本公开还提供了一种显示面板10，优选地，该显示面板10为有机发光显示面板，该有机发光显示面板10集成有上述任意实施例所述的亮度调节装置(未示出)，该亮度调节装置用于执行上述实施例中所述的亮度调节方法，因此重复之处不再赘述。
参考图8，本实施例所述的有机发光显示面板10还可以包括：
设置在多条栅极线GL和多条数据线DL的交叉点上的多个像素P。每个像素P可以包括由对应栅极线GL驱动的开关晶体管、通过经由开关晶体管提供的图像信号导通的驱动晶体管、由发光控制信号EM驱动的发光晶体管以及有机发光二极管，以及
多条发光控制线11，每一条前述发光控制线11与至少一行子像素P对应设置并电连接；
多级级联的移位寄存器单元200，该多级级联的移位寄存器单元200与前述多条发光控制线11一一对应设置并且电连接，每一级的移位寄存器单元可以包括被配置为产生扫描信号的多个移位寄存器，用于给对应一条前述发光控制线11传输前述发光控制信号EM。
在本实施例中，通过数据线DL提供的图像信号可以通过经由栅极线GL提供的扫描信号导通的开关晶体管被传送到驱动晶体管。当发光晶体管通过发光控制信号EM而导通时，有机发光二极管可以通过经过驱动晶体管而在其中流动的电流发光。
该有机发光显示面板10还可以包括发光驱动芯片400，用以配置多级级联的移位寄存器单元200所需的时钟信号CLK1和时钟信号CLK2，以及给首级移位寄存器单元200施加移位触发信号IN。基于该发光驱动芯片400传输的移位触发信号IN，移位寄存器单元200输出发光控制信号EM1、EM2、…EMn。该发光驱动芯片400通过调整移位触发信号IN的波形(占空比)，可调整该有机发光显示面板10的亮度等级。
进一步地，该有机发光显示面板10还可以包括被配置为将EM信号传送到相应像素P的发光控制信号EM的控制单元300，该控制单元300可以包括多个发光控制信号的控制电路(未示出)，该发光控制信号的控制电路可以分别一一对应连接到多个移位寄存器单元200，并且可以通 过使用多个移位寄存器的输出信号来产生发光控制信号EM1、EM2、…EMn。
该有机发光显示面板10在控制显示画面进行帧切换时，其中的发光驱动芯片400会预先确定切换后下一帧显示画面的目标亮度和当前帧显示画面的初始亮度，而发光驱动芯片400可配置存储有不同亮度等级对应的最高灰阶亮度及其发光控制信号的有效占空比，则发光驱动芯片400根据前述目标亮度与前述初始亮度的差值比例设置插入的N帧中每一帧的显示画面的发光控制信号EM的占空比，并以此调节对应的发光控制信号EM的移位触发信号IN以使多级级联的移位寄存器单元200输出对应驱动当前显示帧的发光控制信号EM1、EM2、…EMn。
另一方面本公开还提供了一种显示装置(未示出)，其中，该显示装置例如包括有如前述实施例中所述的有机发光显示面板。
该显示装置例如可以是但不限于：移动电话、平板电脑、计算机的显示器、应用于智能穿戴设备上的显示器或应用于汽车等交通工具上的显示装置。只要显示装置包含了本公开的显示装置所包括的有机发光显示面板，该有机发光显示面板在亮度调节过程中执行了前述实施例中所述的亮度调节方法，便视为落入了本申请的保护范围之内。
综上所述，本公开实施例提供的一种亮度调节方法、亮度调节装置、显示面板和显示装置，能首先获取当前帧的初始亮度；其次当确定下一帧各个像素点的目标亮度与对应的前述初始亮度的差值大于预设阈值时，根据前述当前帧的数据在前述当前帧刷新至前述下一帧之前，插入N帧的显示画面，在等待N帧后刷新该当前帧的数据，并进行下一帧图像的显示；而在此期间根据该下一帧的目标亮度与前述初始亮度的差值比例设置前述N帧的显示亮度，其中，N为不小于1的正整数。具体地，通过获取用于驱动当前显示帧显示画面中的像素发光的发光控制信号(EM)，并计算该下一帧的目标亮度与前述初始亮度的差值，再根据该差值比例设置切换至前述N帧中每一帧所对应接收的发光控制信号(EM)的有效占空比(该有效占空比用以表征该有效占空比对应帧的显示亮度)，以此通过插入的每一帧发光控制信号(EM)的有效占空比的独立调节， 利用逐次切换至该N帧的每一帧的显示画面定义刷新前后人眼能够感觉到的亮度变化差值，使当前帧刷新至下一帧之前插入的N帧显示画面的亮度平滑过渡，通过避免发生跳帧时图像变化剧烈，而影响屏幕前观众的观感，保证了连续帧显示画面的亮度稳定变化，弥补现有技术里刷新一帧数据中由于发光二极管漏电情况不同而导致的屏幕闪烁，提高了显示效果。
应当说明的是，在本公开的描述中，需要理解的是，术语“上”、“下”、“内”等指示方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的组件或元件必须具有特定的方位，以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，在本文中，所含术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
最后应说明的是：显然，上述实施例仅仅是为清楚地说明本公开所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本公开的保护范围之中。

Claims (13)

  1. 一种亮度调节方法，包括：
    获取当前帧的初始亮度；
    在等待N帧后刷新所述当前帧的数据，并进行下一帧图像的显示；
    根据该下一帧的目标亮度与所述初始亮度的差值比例设置所述N帧的显示亮度，
    其中，N为不小于1的正整数。
  2. 根据权利要求1所述的亮度调节方法，其中，所述在等待N帧后刷新所述当前帧的数据中，所述亮度调节方法包括：
    计算所述下一帧的目标亮度与所述当前帧的初始亮度的差值；
    判定所述差值大于预设阈值时，在所述当前帧刷新至所述下一帧之前，插入所述N帧的显示画面。
  3. 根据权利要求2所述的亮度调节方法，其中，所述根据该下一帧的目标亮度与所述初始亮度的差值比例设置所述N帧的亮度包括：
    获取发光控制信号，所述发光控制信号用于驱动当前显示帧显示画面中的像素发光；
    根据所述差值比例设置切换至所述N帧中每一帧所对应接收的发光控制信号的有效占空比，
    所述有效占空比用以表征该有效占空比对应帧的显示亮度。
  4. 根据权利要求3所述的亮度调节方法，其中，所述发光控制信号的输出波形包括多个有效脉冲。
  5. 根据权利要求4所述的亮度调节方法，其中，所述比例设置切换至所述N帧中每一帧所对应接收的发光控制信号的有效占空比包括：
    确定所述目标亮度与所述初始亮度的差值为正；
    逐渐增加驱动切换至当前显示帧的发光控制信号中至少一个有效脉冲的宽度，以使当前所述有效占空比大于驱动前一帧显示画面的发光控制信号的有效占空比。
  6. 根据权利要求4所述的亮度调节方法，其中，所述比例设置切换至所述N帧中每一帧所对应接收的发光控制信号的有效占空比包括：
    确定所述目标亮度与所述初始亮度的差值为负；
    逐渐减小驱动切换至当前显示帧的发光控制信号中至少一个有效脉冲的宽度，以使当前的有效占空比小于驱动前一帧显示画面的发光控制信号的有效占空比。
  7. 一种亮度调节装置，包括：
    确定模块，用于在当前帧的显示画面刷新时，确定当前帧显示画面的初始亮度和刷新后下一帧显示画面的目标亮度；
    控制模块，与所述确定模块连接，用于根据所述目标亮度与所述初始亮度的差值比例设置插入的N帧对应的显示亮度；
    调节模块，与所述控制模块连接，用于根据设置的N帧对应的显示亮度调节驱动所述N帧显示时各自对应的显示参数，
    其中，N为不小于1的正整数。
  8. 根据权利要求7所述的亮度调节装置，其中，所述显示参数为所述N帧中每一帧所对应接收的发光控制信号的有效占空比，所述发光控制信号用于驱动当前显示帧显示画面中的像素发光。
  9. 根据权利要求8所述的亮度调节装置，其中，所述发光控制信号的输出波形包括多个有效脉冲。
  10. 根据权利要求8所述的亮度调节装置，其中，所述调节模块包括：
    计算单元，用于根据所述比例设置插入的N帧对应的显示亮度计算驱动所述N帧中每一帧的显示画面的发光控制信号的占空比；
    脉冲调节单元，与所述计算单元连接，用于根据所述计算单元的计算结果调节驱动切换至所述N帧中每一帧显示画面的发光控制信号中至少一个有效脉冲的宽度。
  11. 一种显示面板，其中，包括：
    如权利要求7～10中任一项所述的亮度调节装置，以及
    多条发光控制线，每一条所述发光控制线与至少一行子像素对应设置并电连接；
    多级级联的移位寄存器单元，所述多级级联的移位寄存器单元与所述多条发光控制线一一对应设置并且电连接，每一级所述移位寄存器单元用于给对应一条所述发光控制线传输所述发光控制信号。
  12. 根据权利要求11所述的显示面板，其中，所述显示面板为有机发光显示面板。
  13. 一种显示装置，其中，包括：如权利要求11或12中所述的显示面板。
PCT/CN2021/094431 2020-11-05 2021-05-18 亮度调节方法、亮度调节装置、显示面板和显示装置 WO2022095409A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011221949.6 2020-11-05
CN202011221949.6A CN112164374A (zh) 2020-11-05 2020-11-05 亮度调节方法、亮度调节装置、显示面板和显示装置

Publications (1)

Publication Number Publication Date
WO2022095409A1 true WO2022095409A1 (zh) 2022-05-12

Family

ID=73865609

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/094431 WO2022095409A1 (zh) 2020-11-05 2021-05-18 亮度调节方法、亮度调节装置、显示面板和显示装置

Country Status (2)

Country Link
CN (1) CN112164374A (zh)
WO (1) WO2022095409A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115620667A (zh) * 2022-12-19 2023-01-17 惠科股份有限公司 显示装置和显示方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112164374A (zh) * 2020-11-05 2021-01-01 北京集创北方科技股份有限公司 亮度调节方法、亮度调节装置、显示面板和显示装置
CN113064682A (zh) * 2021-03-11 2021-07-02 浙江大华技术股份有限公司 一种显示设备的画面显示方法、装置及显示设备
CN113380177B (zh) * 2021-06-29 2022-06-14 合肥维信诺科技有限公司 图像获取装置的调节方法、装置及显示面板的补偿方法
CN113611237A (zh) * 2021-07-03 2021-11-05 深圳市南极光电子科技股份有限公司 一种mini led背光显示画面调节方法及系统
CN113611239A (zh) * 2021-08-16 2021-11-05 业成科技（成都）有限公司 画面更新方法、显示装置和驱动芯片
CN114038417B (zh) * 2021-11-22 2023-05-05 Tcl华星光电技术有限公司 发光控制信号生成电路及oled显示面板
CN117037746A (zh) * 2023-06-19 2023-11-10 广州炫视智能科技有限公司 一种基于环境光线变化调节屏幕帧频的方法及其系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103956143A (zh) * 2014-05-21 2014-07-30 友达光电股份有限公司 一种用于主动矩阵有机发光二极管显示器的驱动装置
CN108922495A (zh) * 2018-07-25 2018-11-30 北京小米移动软件有限公司 屏幕亮度调节方法及装置
CN108962134A (zh) * 2018-07-25 2018-12-07 Oppo广东移动通信有限公司 控制方法、控制装置、电子装置、存储介质和计算机设备
US20190066611A1 (en) * 2017-08-25 2019-02-28 Asustek Computer Inc. Drive circuit and picture black insertion method of display device
CN111462691A (zh) * 2020-05-13 2020-07-28 京东方科技集团股份有限公司 亮度调节方法及亮度调节装置、显示装置
CN112164374A (zh) * 2020-11-05 2021-01-01 北京集创北方科技股份有限公司 亮度调节方法、亮度调节装置、显示面板和显示装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2059023B1 (en) * 2007-02-20 2015-11-04 Sony Corporation Image display device, video signal processing device, and video signal processing method
US20110267384A1 (en) * 2009-02-25 2011-11-03 Sharp Kabushiki Kaisha Illumination device, display device, data generation method, data generation program, and recording medium
CN105430804A (zh) * 2015-12-20 2016-03-23 合肥艾斯克光电科技有限责任公司 一种led驱动方法
CN110392282B (zh) * 2018-04-18 2022-01-07 阿里巴巴（中国）有限公司 一种视频插帧的方法、计算机存储介质及服务器
TWI703545B (zh) * 2018-10-05 2020-09-01 瑞鼎科技股份有限公司 顯示驅動電路及顯示更新頻率調整方法
CN109326266B (zh) * 2018-12-24 2020-06-30 合肥惠科金扬科技有限公司 改善屏幕闪烁的方法、系统、显示器及存储介质
CN109859719B (zh) * 2019-02-19 2020-12-18 北京集创北方科技股份有限公司 亮度补偿方法、补偿电路及其显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103956143A (zh) * 2014-05-21 2014-07-30 友达光电股份有限公司 一种用于主动矩阵有机发光二极管显示器的驱动装置
US20190066611A1 (en) * 2017-08-25 2019-02-28 Asustek Computer Inc. Drive circuit and picture black insertion method of display device
CN108922495A (zh) * 2018-07-25 2018-11-30 北京小米移动软件有限公司 屏幕亮度调节方法及装置
CN108962134A (zh) * 2018-07-25 2018-12-07 Oppo广东移动通信有限公司 控制方法、控制装置、电子装置、存储介质和计算机设备
CN111462691A (zh) * 2020-05-13 2020-07-28 京东方科技集团股份有限公司 亮度调节方法及亮度调节装置、显示装置
CN112164374A (zh) * 2020-11-05 2021-01-01 北京集创北方科技股份有限公司 亮度调节方法、亮度调节装置、显示面板和显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115620667A (zh) * 2022-12-19 2023-01-17 惠科股份有限公司 显示装置和显示方法
US11908402B1 (en) 2022-12-19 2024-02-20 HKC Corporation Limited Display device and display method

Also Published As

Publication number Publication date
CN112164374A (zh) 2021-01-01

Similar Documents

Publication Publication Date Title
WO2022095409A1 (zh) 亮度调节方法、亮度调节装置、显示面板和显示装置
US8144108B2 (en) Liquid crystal display device and driving method thereof
KR101100947B1 (ko) 유기전계발광 표시장치 및 그의 구동방법
CN108630151B (zh) 像素电路及其驱动方法、阵列基板及显示装置
CN108109583A (zh) 电致发光显示装置及其驱动方法
US8054321B2 (en) Display and driving method thereof
KR20230058023A (ko) 표시 장치 및 그 구동 방법
KR102627276B1 (ko) 구동회로, 표시장치 및 이의 구동방법
KR20190077689A (ko) 유기 발광 다이오드 디스플레이 장치
CN112313732A (zh) 显示设备
CN110379351B (zh) 显示面板的驱动方法、显示面板及显示装置
US11417278B2 (en) Display device and driving method thereof
KR20190034376A (ko) 타이밍 제어부 및 이를 포함하는 표시 장치
WO2022057294A1 (zh) 亮度调节方法、装置及显示设备
CN111179849B (zh) 控制单元、控制电路、显示装置及其控制方法
KR20170132401A (ko) 표시 장치 및 이의 구동 방법
KR20200033359A (ko) 표시 장치 및 이의 구동 방법
US20240078972A1 (en) Display panel, method for driving display panel, driving circuit and display device
CN114283750A (zh) 显示装置及其显示方法
KR20140119511A (ko) 유기 발광 표시 장치 및 그 구동 방법
JP2021192093A (ja) 表示パネルを制御するための装置及び方法
CN112365843A (zh) 像素驱动电路及其驱动方法、显示面板及装置
KR20150035073A (ko) 유기발광소자표시장치 및 그 구동방법
CN113903307A (zh) 信号提供方法、信号提供模组和显示装置
CN116665592A (zh) 一种显示装置及其控制方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21888112

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21888112

Country of ref document: EP

Kind code of ref document: A1