WO2016179936A1 - 显示面板、调试画面闪烁的方法及装置、显示装置 - Google Patents

显示面板、调试画面闪烁的方法及装置、显示装置 Download PDF

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WO2016179936A1
WO2016179936A1 PCT/CN2015/089941 CN2015089941W WO2016179936A1 WO 2016179936 A1 WO2016179936 A1 WO 2016179936A1 CN 2015089941 W CN2015089941 W CN 2015089941W WO 2016179936 A1 WO2016179936 A1 WO 2016179936A1
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common electrode
pixel electrode
voltage
electrode
frequency
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PCT/CN2015/089941
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English (en)
French (fr)
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严允晟
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京东方科技集团股份有限公司
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Priority to US15/302,016 priority Critical patent/US9990875B2/en
Publication of WO2016179936A1 publication Critical patent/WO2016179936A1/zh

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    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
    • G01R31/2825—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere in household appliances or professional audio/video equipment
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2230/00—Details of flat display driving waveforms
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes

Definitions

  • the present disclosure relates to the field of liquid crystal displays, and in particular, to a display panel, a method and device for debugging a screen flicker, and a display device.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • liquid crystal molecules are characterized in that they always maintain a flip direction when the applied voltage is constant. If the liquid crystal molecules are in the same deflection direction for a long time, the characteristics of the TFT-LCD will be damaged, and the liquid crystal molecules cannot be restored to their original state after the voltage is changed. Therefore, in practical applications, an alternating driving voltage is applied to the liquid crystal molecules, so that the liquid crystal molecules are different. The direction of deflection.
  • a data line 11 and a gate line 12 are cross-arranged on the array substrate, wherein a region surrounded by the data line 11 and the gate line 12 is a sub-pixel unit.
  • Each of the sub-pixel units includes a thin film transistor (TFT) 13, a first common electrode 14, a pixel electrode 15 between the first common electrode 14 and the thin film transistor 13, and a pixel electrode 15 and a first common electrode A capacitor 16 is generated between 14.
  • TFT thin film transistor
  • the thin film transistor 13 When the thin film transistor 13 is turned on, the voltage on the data line 11 is introduced to the pixel electrode 15, while a fixed voltage is also applied to the first common electrode 14.
  • the pixel electrode voltage is higher than the first common electrode voltage, the liquid crystal molecules are forwardly deflected; when the pixel electrode voltage is lower than the first common electrode voltage, the liquid crystal molecules are reversely deflected.
  • the forward and reverse deflections are asymmetrical, the picture flickers.
  • Fig. 2 shows a variation curve of the luminance of the pixel electrode in a low frequency range, for example, when the frequency at which the pixel electrode drives the liquid crystal inversion is 60 Hz.
  • the brightness variation of the pixel electrode is large, and because the frequency at which the pixel electrode is flipped is low, the brightness of the pixel electrode changes at a low frequency.
  • the frequency at which the pixel electrode drives the liquid crystal to flip is low, causing the phenomenon of flickering of the screen in the display panel to be serious, and is easily perceived by the human eye.
  • the embodiment of the present invention provides a display panel, a method and a device for debugging a screen flicker, and a display device, which is used to improve the flickering phenomenon of the screen in the display panel when the pixel electrode drives the liquid crystal inversion frequency to be constant, so that the screen flickers. Not easily noticed by the human eye.
  • a display panel includes: a substrate, a data line and a gate line disposed on the substrate, and a sub-pixel unit surrounded by the data line and the gate line, each sub-pixel unit including a TFT and a pixel electrode. a first common electrode and a second common electrode, and the second common electrode is connected to an input terminal for supplying an alternating voltage of a first frequency; wherein
  • the projection of the second common electrode and the pixel electrode on the substrate has an overlapping area.
  • a display panel provided by an embodiment of the present disclosure includes a second common electrode. After the AC voltage of the first frequency is supplied to the second common electrode, since the projection of the second common electrode and the pixel electrode on the substrate has an overlapping area, a capacitance is formed between the second common electrode and the pixel electrode, and the capacitor is formed through the capacitor. Charging or discharging, introducing an alternating voltage of the first frequency to the pixel electrode, so that the frequency of the pixel electrode voltage is the first frequency, thereby increasing the frequency of the pixel electrode voltage, thereby improving the phenomenon of flickering of the screen in the display panel, causing the screen to flicker Not easily noticed by the human eye.
  • the data line is connected to an input terminal for providing an AC voltage of a second frequency, and the first frequency is greater than the second frequency;
  • the data line is connected to the pixel electrode, and the frequency of the voltage change of the pixel electrode is a first frequency.
  • the data line is connected to the pixel electrode for inputting the AC voltage of the second frequency to the pixel electrode; meanwhile, the second common electrode is connected to the pixel electrode for the intersection of the first frequency greater than the second frequency
  • the flow voltage is input to the pixel electrode, so that the pixel electrode voltage frequency is the same as the first frequency, the frequency of the pixel electrode voltage is increased, and the pixel electrode voltage value is reduced, thereby improving the phenomenon of flickering of the screen in the display panel, causing the screen to flicker. Not easily noticed by the human eye.
  • the pixel electrode, the first common electrode and the second common electrode are both disposed on the array substrate, the first common electrode is located above the pixel electrode, and the second common electrode is located at the pixel electrode Below; or,
  • the second common electrode is located above the pixel electrode, and the first common electrode is located below the pixel electrode;
  • the second common electrode is disposed in the same layer as the first common electrode.
  • the pixel electrode and the second common electrode are both disposed on the array substrate, the first common electrode is disposed on the color filter substrate, and the second common electrode is located above the pixel electrode Or below.
  • the pixel electrode is disposed on the array substrate, the second common electrode and the first common electrode are both disposed on the color filter substrate, and the second common electrode is located above the first common electrode Or below; or,
  • the second common electrode is disposed in the same layer as the first common electrode.
  • the projection of the second common electrode and the pixel electrode on the substrate in the array substrate has an overlapping area
  • the projections of the second common electrode and the first common electrode on the substrate in the array substrate or the color filter substrate have no overlapping regions and are insulated from each other.
  • the projection of the second common electrode and the pixel electrode on the substrate in the array substrate has an overlapping area such that a capacitance is formed between the second common electrode and the pixel electrode.
  • the projections of the second common electrode and the first common electrode on the substrate in the array substrate or the color filter substrate have no overlapping regions and are insulated from each other, thereby preventing capacitance from being formed between the first common electrode and the second common electrode.
  • the second common electrode is composed of a transparent conductive layer or a conductive metal layer.
  • the second common electrode is located within a projection of a black matrix of the color filter substrate or the array substrate.
  • the second common electrode is disposed within the projection of the black matrix of the color filter substrate or the array substrate.
  • An embodiment of the present disclosure provides a method for debugging a screen of a display panel according to any one of the embodiments of the present disclosure.
  • the method includes:
  • a change value of the brightness of the pixel electrode is determined according to a change value of the pixel electrode voltage.
  • the AC voltage of the first frequency when the AC voltage of the first frequency is applied to the second common electrode, the AC voltage of the first frequency on the second common electrode passes, and the second common electrode and the pixel
  • the function of the capacitance between the electrodes is such that the frequency of change of the pixel electrode voltage is the first frequency, thereby increasing the frequency of change of the pixel electrode voltage, and simultaneously reducing the variation value of the pixel electrode voltage, thereby causing the variation value of the pixel electrode brightness.
  • the phenomenon of flickering in the display panel is improved, so that the flickering of the screen is not easily perceived by the human eye.
  • determining a change value of the pixel electrode voltage according to a change value of the AC voltage of the first frequency on the second common electrode including:
  • the change value of the pixel electrode voltage is determined according to a change value of the AC voltage of the first frequency on the second common electrode, and a capacitance between the first common electrode and the pixel electrode and a capacitance between the second common electrode and the pixel electrode.
  • the change value of the pixel electrode voltage satisfies the following formula:
  • ⁇ V p represents a change value of the pixel electrode voltage
  • C1 represents a capacitance between the first common electrode and the pixel electrode
  • C2 represents a capacitance between the second common electrode and the pixel electrode
  • ⁇ V represents the change value of the alternating voltage of the first frequency.
  • An embodiment of the present disclosure provides an apparatus for debugging a screen of a display panel according to any one of the embodiments of the present disclosure, the apparatus comprising:
  • Determining a pixel electrode voltage change unit for determining a change value of the pixel electrode voltage according to a change value of the AC voltage of the first frequency on the second common electrode;
  • Determining a pixel electrode brightness change unit for determining a change value of the pixel electrode voltage The change value of the brightness of the pixel electrode.
  • the apparatus for blinking the debug screen provided by the embodiment of the present disclosure, when an AC voltage of a first frequency is applied to the second common electrode, an AC voltage of the first frequency on the second common electrode passes, and the second common electrode and the pixel
  • the function of the capacitance between the electrodes is such that the frequency of change of the pixel electrode voltage is the first frequency, thereby increasing the frequency of change of the pixel electrode voltage, and simultaneously reducing the variation value of the pixel electrode voltage, thereby causing the variation value of the pixel electrode brightness.
  • the phenomenon of flickering in the display panel is improved, so that the flickering of the screen is not easily perceived by the human eye.
  • the determining a pixel electrode voltage change unit is specifically configured to:
  • the change value of the pixel electrode voltage is determined according to a change value of the AC voltage of the first frequency on the second common electrode, and a capacitance between the first common electrode and the pixel electrode and a capacitance between the second common electrode and the pixel electrode.
  • the change value of the pixel electrode voltage satisfies the following formula:
  • ⁇ V p represents a change value of the pixel electrode voltage
  • C1 represents a capacitance between the first common electrode and the pixel electrode
  • C2 represents a capacitance between the second common electrode and the pixel electrode
  • ⁇ V represents the change value of the alternating voltage of the first frequency.
  • An embodiment of the present disclosure provides a display device, including any of the display panels provided by the embodiments of the present disclosure.
  • the display device further includes any of the devices provided by the embodiments of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a sub-pixel unit provided by the prior art
  • FIG. 2 is a graph showing brightness changes of a pixel electrode provided by the prior art
  • FIG. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart diagram of a method for debugging a screen flicker according to an embodiment of the present disclosure
  • FIG. 5 is a waveform diagram of an AC voltage signal of a first frequency according to an embodiment of the present disclosure
  • FIG. 6 is a graph showing brightness changes of a pixel electrode according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of an apparatus for debugging a screen flicker according to an embodiment of the present disclosure.
  • the embodiment of the present invention provides a display panel, a method and a device for debugging a screen flicker, and a display device, which is used to improve the flickering phenomenon of the screen in the display panel when the pixel electrode drives the liquid crystal inversion frequency to be constant, so that the screen flickers. Not easily noticed by the human eye.
  • a display panel includes: a substrate (not shown), data lines 11 and gate lines 12 disposed on the substrate, and sub-areas surrounded by data lines and gate lines.
  • a pixel unit each sub-pixel unit includes a TFT 13, a pixel electrode 15, a first common electrode 14, and a second common electrode 21, and the second common electrode 21 is connected to an input terminal for supplying an alternating voltage of a first frequency;
  • the projection of the second common electrode 21 and the pixel electrode 15 on the substrate has an overlapping area.
  • the first frequency is generally greater than or equal to 120 Hz for providing a high frequency to the second common electrode.
  • the projection of the second common electrode 21 and the pixel electrode 15 on the substrate has an overlapping area, such that a capacitance 22 is formed between the second common electrode 21 and the pixel electrode 15, and the value of the capacitor 22 is according to the manufacturing characteristics of the display panel.
  • the value of the capacitor 22 is fixed.
  • FIG. 3 Two capacitors are shown in FIG. 3, wherein the capacitor 16 is a capacitance formed between the pixel electrode 15 and the first common electrode 14, and the capacitor 22 is a capacitance formed between the pixel electrode 15 and the second common electrode 21. Therefore, the capacitor 16 and the capacitor 22 do not belong to the newly added structure.
  • the capacitor 16 and the capacitor 22 are drawn in FIG. 3 for a better understanding of the scheme.
  • a second common electrode 21 is included in the display panel provided by the embodiment of the present disclosure. After the AC voltage of the first frequency is supplied to the second common electrode 21, since the projection of the second common electrode 21 and the pixel electrode 15 on the substrate has an overlapping area, a capacitance is formed between the second common electrode 21 and the pixel electrode 15. twenty two. Through the charging and discharging action of the capacitor 22, the AC voltage of the first frequency is introduced to the pixel electrode 15, so that the frequency of the pixel electrode voltage is the first frequency, thereby increasing the frequency of the pixel electrode voltage, thereby improving the flicker of the screen in the display panel. Phenomenon, making the picture flicker is not easy to be perceived by the human eye.
  • the data line 11 is coupled to an input for providing an alternating voltage of the second frequency, and the first frequency is greater than the second frequency.
  • the data line 11 is connected to the pixel electrode 15 through the TFT 13, and the frequency of the voltage change of the pixel electrode 15 is the first frequency.
  • the data line 11 is connected to the pixel electrode 15 for inputting the AC voltage of the second frequency to the pixel electrode 15; meanwhile, the second common electrode 21 is connected to the pixel electrode 15 for transmitting the first frequency greater than the second frequency.
  • the voltage is input to the pixel electrode 15 such that the pixel electrode voltage frequency is the same as the first frequency, increasing the frequency of the pixel electrode voltage, and reducing the voltage variation value of the pixel electrode voltage, that is, the amplitude, thereby improving the picture in the display panel.
  • the phenomenon of flickering makes the flickering of the picture not easily noticeable by the human eye.
  • the second common electrode 21 provided by the embodiment of the present disclosure may be located in different layers or in the same layer.
  • the projection of the second common electrode 21 and the first common electrode 14 on the substrate has no overlapping area (regardless of the intersection of the projections of the two, or the area of the overlapping portion of the projections of the two is zero), The capacitor is prevented from being formed between the second common electrode 21 and the first common electrode 14, thereby affecting the voltage on the second common electrode 21 or the first common electrode 14.
  • the substrate is a substrate in the color filter substrate, or the substrate in the array substrate, according to the positional relationship between the second common electrode 21 and the first common electrode 14, determining which of the second common electrode 21 and the first common electrode 14 The projection on the substrate has no overlapping areas.
  • the second common electrode 21, the first common electrode 14, and the pixel electrode 15 are described in detail below.
  • the embodiment of the present disclosure only describes several positional relationships, and does not cover all the positional relationships. Therefore, regardless of the positional relationship between the second common electrode 21, the first common electrode 14, and the pixel electrode 15, as long as the second position is passed through the second
  • the effect of the common electrode to increase the frequency of the pixel electrode voltage is within the scope of protection of embodiments of the present disclosure.
  • the positional relationship between the second common electrode 21, the first common electrode 14, and the pixel electrode 15 is:
  • the pixel electrode 15, the first common electrode 14, and the second common electrode 21 are all disposed on the array substrate, the first common electrode 14 is located above the pixel electrode 15, and the second common electrode 21 is located below the pixel electrode 15; or
  • the second common electrode 21 is located above the pixel electrode 15, and the first common electrode 14 is located below the pixel electrode 15; or
  • the second common electrode 21 is disposed in the same layer as the first common electrode 14.
  • the projections of the second common electrode 21 and the pixel electrode 15 on the substrate in the array substrate have overlapping regions;
  • the projections of the second common electrode 21 and the first common electrode 14 on the substrate in the array substrate have no overlapping regions and are insulated from each other.
  • the pixel electrode 15 and the second common electrode 21 are both disposed on the array substrate, the first common electrode 14 is disposed on the color filter substrate, and the second common electrode 21 is located above or below the pixel electrode 15.
  • the projections of the second common electrode 21 and the pixel electrode 15 on the substrate in the array substrate have overlapping regions;
  • the projections of the second common electrode 21 and the first common electrode 14 on the substrate in the array substrate have no overlapping regions and are insulated from each other.
  • the pixel electrode 15 is disposed on the array substrate, and the second common electrode 21 and the first common electrode 14 are both disposed on the color filter substrate, and the second common electrode 21 is located above or below the first common electrode 14; or
  • the second common electrode 21 is disposed in the same layer as the first common electrode 14.
  • the projections of the second common electrode 21 and the pixel electrode 15 on the substrate in the array substrate have overlapping regions;
  • the projections of the second common electrode 21 and the first common electrode 14 on the substrate in the color filter substrate have no overlapping regions and are insulated from each other.
  • the second common electrode 21 is composed of a transparent conductive layer or a conductive metal layer.
  • the second common electrode 21 is located within the projection of the black matrix of the color filter substrate or the array substrate.
  • the second common electrode 21 provided in the embodiment of the present disclosure may be disposed in a black matrix (BM) light blocking region.
  • BM black matrix
  • the phenomenon of adjusting the flicker of the display panel can be implemented.
  • the adjustment method is described in detail in Embodiment 2.
  • an embodiment of the present disclosure provides a method for debugging a screen of a display panel provided by an embodiment of the present disclosure, where the method includes:
  • the applied AC voltage of the first frequency is higher than the AC voltage of the second frequency provided by the data line.
  • S402. Determine a change value of the pixel electrode voltage according to a change value of the AC voltage of the first frequency on the second common electrode.
  • the change value of the AC voltage of the first frequency in the embodiment of the present disclosure is defined as the voltage difference before and after the AC voltage changes.
  • the change value of the pixel electrode voltage is the maximum voltage difference before and after the change of the pixel electrode voltage, that is, the amplitude.
  • the change of the alternating voltage of the first frequency is 2V (3V-1V). Since the voltage on the pixel electrode is still 1V, the voltage on the second common electrode becomes 3V, so that there is a voltage difference between the second common electrode and the pixel electrode. The capacitance between the second common electrode and the pixel electrode is charged due to the voltage difference, so that the voltage of the pixel electrode rises.
  • the change value of the pixel electrode voltage is determined by the change value of the AC voltage of the first frequency supplied on the second common electrode, and the manner of specific satisfaction will be described in detail below.
  • the determining a change value of the pixel electrode voltage according to the change value of the AC voltage of the first frequency on the second common electrode includes:
  • the change value of the pixel electrode voltage is determined according to a change value of the AC voltage of the first frequency on the second common electrode, and a capacitance between the second common electrode and the pixel electrode and a capacitance between the first common electrode and the pixel electrode.
  • the capacitance between the first common electrode and the pixel electrode, and the capacitance between the second common electrode and the pixel electrode are both fixed. Therefore, the change value of the pixel electrode voltage is determined only by the change value of the AC voltage of the first frequency on the second common electrode.
  • ⁇ V p represents a change value of the pixel electrode voltage
  • C1 represents a capacitance between the first common electrode and the pixel electrode
  • C2 represents a capacitance between the second common electrode and the pixel electrode
  • ⁇ V represents the change value of the alternating voltage of the first frequency.
  • C1 and C2 are fixed, and C1 may be equal to C2, and C1 may not be equal to C2, which is not limited in the embodiment of the present disclosure.
  • the change value of the pixel electrode brightness may be determined according to a method in the prior art. Therefore, the method in step S403 is the same as the prior art, and is not described here.
  • the value of the capacitance C1 between the first common electrode and the pixel electrode is A
  • the value of the capacitance C2 between the second common electrode and the pixel electrode is B.
  • the frequency of the AC voltage of the first frequency is 240 Hz
  • the amplitude is -0.5 V-0.5 V.
  • Fig. 5 is a waveform diagram of an alternating voltage signal of a first frequency.
  • the frequency of the voltage change on the second common electrode is 240 Hz
  • the amplitude of the voltage is -0.5 V to 0.5 volt.
  • the voltage on the pixel electrode changes by the charging action of the capacitor C2, and the frequency of the voltage change on the pixel electrode is 240 Hz.
  • the change value of the pixel electrode voltage It can be seen that the change value of the pixel electrode voltage is less than 1V. It has been proved by many experiments that the pixel electrode voltage is up to 1.8V and the lowest is 1.5V, so that the voltage change value on the pixel electrode is 0.3V. Then, according to the change value of the pixel electrode voltage in the prior art, the change value of the pixel electrode luminance is determined.
  • FIG. 6 is a graph showing a brightness variation of a pixel electrode according to an embodiment of the present disclosure. It can be seen from FIG. 6 that the variation frequency of the brightness of the pixel electrode provided by the embodiment of the present disclosure is greater than the frequency of change of the brightness of the pixel electrode in the prior art, and the variation value of the brightness of the pixel electrode provided by the embodiment of the present disclosure is smaller than that in the prior art. The change in the brightness of the pixel electrode.
  • an apparatus for debugging screen flicker of an array substrate provided by an embodiment of the present disclosure is provided according to an embodiment of the present disclosure, and the apparatus includes:
  • the pixel electrode luminance changing unit 73 is configured to determine a variation value of the pixel electrode luminance according to the variation value of the pixel electrode voltage.
  • the device for debugging the screen flicker when the AC voltage of the first frequency is applied to the second common electrode, the AC voltage of the first frequency on the second common electrode passes through the second common electrode and the pixel electrode.
  • the function of the capacitor is such that the frequency of change of the pixel electrode voltage is the first frequency, thereby increasing the frequency of change of the pixel electrode voltage, and simultaneously reducing the variation value of the pixel electrode voltage, thereby reducing the variation of the brightness of the pixel electrode.
  • the phenomenon of flickering of the screen in the display panel is improved, so that the flickering of the screen is not easily perceived by the human eye.
  • the pixel electrode voltage changing unit 72 is specifically configured to:
  • the change value of the pixel electrode voltage is determined according to a change value of the AC voltage of the first frequency on the second common electrode, and a capacitance between the first common electrode and the pixel electrode and a capacitance between the second common electrode and the pixel electrode.
  • the change value of the pixel electrode voltage satisfies the following formula:
  • ⁇ V p represents a change value of the pixel electrode voltage
  • C1 represents a capacitance between the first common electrode and the pixel electrode
  • C2 represents a capacitance between the second common electrode and the pixel electrode
  • ⁇ V represents the change value of the alternating voltage of the first frequency.
  • a display device provided by an embodiment of the present disclosure includes any display panel provided by an embodiment of the present disclosure, and any device provided by an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a display panel, a method and device for debugging a screen flicker, and a display device.
  • the display panel provided by the embodiment of the present disclosure includes a second common electrode, after the AC voltage of the first frequency is supplied to the second common electrode, because the projection of the second common electrode and the pixel electrode on the substrate has an overlapping area, so that A capacitance is formed between the common electrode and the pixel electrode, and an AC voltage of the first frequency is introduced to the pixel electrode by the charging and discharging action of the capacitor, so that the frequency of the pixel electrode voltage is the first frequency, thereby increasing the voltage of the pixel electrode.
  • the frequency thereby improving the phenomenon of flickering of the screen in the display panel, so that the flickering of the screen is not easily perceived by the human eye.

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Abstract

提供了一种显示面板，包括：基板、基板上交叉设置的数据线（11）和栅线（12）、以及由数据线（11）和栅线（12）围成的亚像素单元，其中，各亚像素单元包括TFT（13）、像素电极（15）、第一公共电极（14）和第二公共电极（21），且第二公共电极（21）与用于提供第一频率的交流电压的输入端相连；其中，第二公共电极（21）与像素电极（15）在基板上的投影具有重叠区域。还提供了显示面板的调试画面闪烁的方法及装置、显示装置。

Description

显示面板、调试画面闪烁的方法及装置、显示装置
相关申请的交叉引用
本申请主张在2015年5月11日在中国提交的中国专利申请号No.201510236707.7的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及液晶显示器领域，尤其涉及一种显示面板、调试画面闪烁的方法及装置、显示装置。
背景技术
随着数字技术的飞速发展，数字化显示器也在不断更新换代。液晶显示面板的显示画面效果也是人们不断追求的。相关技术中，薄膜晶体管液晶显示器(Thin Firm Transistor Liquid Crystal Display，TFT-LCD)因为其体积小，低功耗，无辐射，高分辨率等优点也逐渐成为了目前的主导产品。
一般在实际应用中，当TFT-LCD画面显示时，会出现一种屏幕闪烁(Flicker)的问题。通常地，液晶分子的特性是在施加电压不变的情况下，始终会保持一个翻转方向。如果液晶分子长时间处于同一个偏转方向，则会损坏TFT-LCD的特性，改变电压后液晶分子就不能恢复原状，所以在实际应用中，会施加交流驱动电压给液晶分子，使液晶分子朝不同的方向偏转。
参见图1，阵列基板上交叉设置有数据线11和栅线12，其中，数据线11和栅线12围成的区域为亚像素单元。每个亚像素单元包括，薄膜晶体管(Thin Firm Transistor，TFT)13、第一公共电极14、位于第一公共电极14和薄膜晶体管13之间的像素电极15、以及像素电极15与第一公共电极14之间产生的电容16。
当薄膜晶体管13导通时，将数据线11上的电压引入到像素电极15上，同时第一公共电极14上也施加有固定的电压。当像素电极电压高于第一公共电极电压时，液晶分子正向偏转；当像素电极电压低于第一公共电极电压时，液晶分子反向偏转。当正向偏转和反向偏转不对称时，会造成画面闪烁的现象。
现有技术中，一般采用正负交替方式驱动液晶偏转，且像素电极驱动液 晶翻转的频率是固定不变的。图2示出了在低频范围内，例如当像素电极驱动液晶翻转的频率为60HZ时，像素电极的亮度的变化曲线。从图2中看出，像素电极的亮度变化幅值较大，同时因为像素电极翻转的频率较低，使得像素电极的亮度变化频率较低。一般地，当驱动液晶偏转的频率低于120HZ时，画面闪烁的现象容易被人眼察觉；当驱动液晶偏转的频率高于或等于120HZ时，画面闪烁的现象则不容易被人眼察觉。
综上所述，现有技术中，像素电极驱动液晶翻转的频率较低，造成显示面板中画面闪烁的现象严重，且容易被人眼察觉。
发明内容
本公开实施例提供了一种显示面板、调试画面闪烁的方法及装置、显示装置，用以在像素电极驱动液晶翻转的频率不变的情况下，改善显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
本公开实施例提供的一种显示面板，包括：基板、基板上交叉设置的数据线和栅线、以及由数据线和栅线围成的亚像素单元，各亚像素单元包括TFT、像素电极、第一公共电极和第二公共电极，且所述第二公共电极与用于提供第一频率的交流电压的输入端相连；其中，
所述第二公共电极与所述像素电极在所述基板上的投影具有重叠区域。
本公开实施例提供的显示面板中包括第二公共电极。当第一频率的交流电压提供给该第二公共电极后，因为第二公共电极与像素电极在基板上的投影具有重叠区域，使得第二公共电极与像素电极之间形成电容，通过该电容的充电或放电作用，引入第一频率的交流电压给像素电极，使得像素电极电压的频率为第一频率，从而增大了像素电极电压的频率，从而改善显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
可选地，所述数据线与用于提供第二频率的交流电压的输入端相连，且所述第一频率大于所述第二频率；
其中，所述数据线与所述像素电极相连，所述像素电极的电压变化的频率为第一频率。
数据线与像素电极相连，用于将第二频率的交流电压输入给像素电极；同时，第二公共电极与像素电极相连，用于将大于第二频率的第一频率的交 流电压输入给像素电极，使得像素电极电压频率与第一频率相同，增大了像素电极电压的频率，同时减小了像素电极电压值，从而改善了显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
可选地，所述像素电极、第一公共电极和第二公共电极均设置在阵列基板上，所述第一公共电极位于所述像素电极的上方，所述第二公共电极位于所述像素电极的下方；或者，
所述第二公共电极位于所述像素电极的上方，所述第一公共电极位于所述像素电极的下方；或者，
所述第二公共电极与所述第一公共电极同层设置。
可选地，所述像素电极和所述第二公共电极均设置在阵列基板上，所述第一公共电极设置在所述彩膜基板上，所述第二公共电极位于所述像素电极的上方或下方。
可选地，所述像素电极设置在所述阵列基板上，所述第二公共电极和第一公共电极均设置在彩膜基板上，所述第二公共电极位于所述第一公共电极的上方或下方；或者，
所述第二公共电极与所述第一公共电极同层设置。
可选地，所述第二公共电极与所述像素电极在所述阵列基板中的基板上的投影具有重叠区域；
所述第二公共电极与所述第一公共电极在所述阵列基板或彩膜基板中的基板上的投影无重叠区域且相互绝缘。
具体地，第二公共电极与像素电极在阵列基板中的基板上的投影具有重叠区域，使得第二公共电极与像素电极之间形成电容。第二公共电极与第一公共电极在阵列基板或彩膜基板中的基板上的投影无重叠区域且相互绝缘，防止第一公共电极与第二公共电极之间形成电容。
可选地，所述第二公共电极由透明导电层或导电金属层构成。
可选地，所述第二公共电极位于所述彩膜基板或阵列基板的黑矩阵的投影内。
为了不影响显示面板的开口率，将第二公共电极设置在彩膜基板或者阵列基板的黑矩阵的投影内。
本公开实施例提供了一种利用本公开实施例提供的任一所述的显示面板调试画面闪烁的方法，该方法包括：
在所述第二公共电极上施加第一频率的交流电压；
根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值；
根据所述像素电极电压的变化值，确定像素电极亮度的变化值。
在本公开实施例提供的调试画面闪烁的方法中，当给第二公共电极施加第一频率的交流电压时，第二公共电极上的第一频率的交流电压会通过，第二公共电极与像素电极之间的电容的作用，使得像素电极电压的变化频率为第一频率，从而增大了像素电极电压的变化频率，同时减小了像素电极电压的变化值，从而使得像素电极亮度的变化值减小，改善了显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
可选地，根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值，包括：
根据第二公共电极上第一频率的交流电压的变化值，以及第一公共电极与像素电极间的电容和第二公共电极与像素电极间的电容，确定像素电极电压的变化值。
可选地，所述像素电极电压的变化值，满足如下公式：
Figure PCTCN2015089941-appb-000001
其中，ΔVp代表像素电极电压的变化值；
C1代表第一公共电极与像素电极间的电容；
C2代表第二公共电极与像素电极间的电容；
ΔV代表第一频率的交流电压的变化值。
本公开实施例提供了一种利用本公开实施例提供的任一所述的显示面板调试画面闪烁的装置，该装置包括：
施加电压单元，用于在第二公共电极上施加第一频率的交流电压；
确定像素电极电压变化单元，用于根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值；
确定像素电极亮度变化单元，用于根据所述像素电极电压的变化值，确 定像素电极亮度的变化值。
在本公开实施例提供的调试画面闪烁的装置中，当给第二公共电极施加第一频率的交流电压时，第二公共电极上的第一频率的交流电压会通过，第二公共电极与像素电极之间的电容的作用，使得像素电极电压的变化频率为第一频率，从而增大了像素电极电压的变化频率，同时减小了像素电极电压的变化值，从而使得像素电极亮度的变化值减小，改善了显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
可选地，所述确定像素电极电压变化单元，具体用于：
根据第二公共电极上第一频率的交流电压的变化值，以及第一公共电极与像素电极间的电容和第二公共电极与像素电极间的电容，确定像素电极电压的变化值。
可选地，所述像素电极电压的变化值满足如下公式：
Figure PCTCN2015089941-appb-000002
其中，ΔVp代表像素电极电压的变化值；
C1代表第一公共电极与像素电极间的电容；
C2代表第二公共电极与像素电极间的电容；
ΔV代表第一频率的交流电压的变化值。
本公开实施例提供了一种显示装置，包括本公开实施例提供的任一所述的显示面板。
可选地，所述显示装置还包括本公开实施例提供的任一所述的装置。
附图说明
图1为现有技术提供的一种亚像素单元的结构示意图；
图2为现有技术提供的一种像素电极的亮度变化曲线图；
图3为本公开实施例提供的一种显示面板的结构示意图；
图4为本公开实施例提供的一种调试画面闪烁的方法的流程示意图；
图5为本公开实施例提供的一种第一频率的交流电压信号的波形图；
图6为本公开实施例提供的一种像素电极的亮度变化曲线图；以及
图7为本公开实施例提供的一种调试画面闪烁的装置的结构示意图。
具体实施方式
为了使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开作进一步地详细描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
本公开实施例提供了一种显示面板、调试画面闪烁的方法及装置、显示装置，用以在像素电极驱动液晶翻转的频率不变的情况下，改善显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
下面通过附图具体说明本公开实施例提供的技术方案。
实施例一
参见图3，本公开实施例提供的一种显示面板，包括：基板(图中未画出)、基板上交叉设置的数据线11和栅线12、以及由数据线和栅线围成的亚像素单元，各亚像素单元包括TFT 13、像素电极15、第一公共电极14和第二公共电极21，且第二公共电极21与用于提供第一频率的交流电压的输入端相连；其中，第二公共电极21与像素电极15在基板上的投影具有重叠区域。
需要说明的是第一频率一般大于或等于120HZ，用于提供高频率给第二公共电极。第二公共电极21与像素电极15在基板上的投影具有重叠区域，该重叠区域使得第二公共电极21与像素电极15之间形成电容22，且该电容22的值会根据显示面板的制作特点而固定该电容22的值。
图3中画出了两个电容，其中，电容16是像素电极15与第一公共电极14之间形成的电容，电容22是像素电极15与第二公共电极21之间形成的电容。所以电容16与电容22不属于新增加的结构，在图3中画出电容16和电容22是为了更好地理解本方案。
本公开实施例提供的显示面板中包括第二公共电极21。当第一频率的交流电压提供给该第二公共电极21后，因为第二公共电极21与像素电极15在基板上的投影具有重叠区域，使得第二公共电极21与像素电极15之间形成电容22。通过电容22的充电和放电作用，引入第一频率的交流电压给像素电极15，使得像素电极电压的频率为第一频率，从而增大了像素电极电压的频率，从而改善显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
可选地，数据线11与用于提供第二频率的交流电压的输入端相连，且第一频率大于第二频率。其中，数据线11通过TFT 13与像素电极15相连，像素电极15的电压变化的频率为第一频率。
数据线11与像素电极15相连，用于将第二频率的交流电压输入给像素电极15；同时，第二公共电极21与像素电极15相连，用于将大于第二频率的第一频率的交流电压输入给像素电极15，使得像素电极电压频率与第一频率相同，增大了像素电极电压的频率，同时减小了像素电极电压的电压变化值，即，振幅，从而改善了显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
需要说明的是，本公开实施例提供的第二公共电极21第一公共电极14可以位于不同的层，也可以位于同一层。但需要注意的是，第二公共电极21与第一公共电极14在基板上的投影无重叠区域(不考虑二者投影的交点，或者，二者的投影的重合部分的面积为零)，用以防止第二公共电极21与第一公共电极14之间形成电容，从而影响第二公共电极21或者第一公共电极14上的电压。其中，基板为彩膜基板中的基板，或者阵列基板中的基板，根据第二公共电极21与第一公共电极14之间的位置关系，确定第二公共电极21与第一公共电极14在哪个基板上的投影无重叠区域。
下面详细描述第二公共电极21、第一公共电极14以及像素电极15相互 之间的位置关系。本公开实施例只是描述了几种位置关系，并不涵盖所有位置关系，所以无论第二公共电极21、第一公共电极14以及像素电极15相互之间的是何种位置关系，只要通过第二公共电极实现增加像素电极电压的频率的效果，都属于本公开实施例保护的范围。
第二公共电极21、第一公共电极14以及像素电极15相互之间的位置关系为：
位置关系一：
像素电极15、第一公共电极14和第二公共电极21均设置在阵列基板上，第一公共电极14位于像素电极15的上方，第二公共电极21位于像素电极15的下方；或者，
第二公共电极21位于像素电极15的上方，第一公共电极14位于像素电极15的下方；或者，
第二公共电极21与第一公共电极14同层设置。
其中，第二公共电极21与像素电极15在阵列基板中的基板上的投影有重叠区域；
第二公共电极21与所述第一公共电极14在阵列基板中的基板上的投影无重叠区域且相互绝缘。
位置关系二：
像素电极15和第二公共电极21均设置在阵列基板上，第一公共电极14设置在彩膜基板上，第二公共电极21位于像素电极15的上方或下方。
其中，第二公共电极21与像素电极15在阵列基板中的基板上的投影有重叠区域；
第二公共电极21与所述第一公共电极14在阵列基板中的基板上的投影无重叠区域且相互绝缘。
位置关系三：
像素电极15设置在阵列基板上，第二公共电极21和第一公共电极14均设置在彩膜基板上，第二公共电极21位于第一公共电极14的上方或下方；或者，
第二公共电极21与第一公共电极14同层设置。
其中，第二公共电极21与像素电极15在阵列基板中的基板上的投影有重叠区域；
第二公共电极21与所述第一公共电极14在彩膜基板中的基板上的投影无重叠区域且相互绝缘。
可选地，第二公共电极21由透明导电层或导电金属层构成。
可选地，第二公共电极21位于彩膜基板或阵列基板的黑矩阵的投影内。
为了不影响显示面板的开口率，本公开实施例中提供的第二公共电极21可以设置在黑矩阵(BM)挡光区。
针对本公开实施例提供的显示面板，当给第二公共电极施加第一频率的交流电压时，能实现调节该显示面板画面闪烁的现象，该调节方法在实施例二中详细描述。
实施例二
参见图4，本公开实施例提供一种利用本公开实施例提供的显示面板调试画面闪烁的方法，该方法包括：
S401、在第二公共电极上施加第一频率的交流电压；
需要说明的是，施加的第一频率的交流电压高于数据线提供的第二频率的交流电压。
S402、根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值；
需要说明的是，本公开实施例中第一频率的交流电压的变化值定义为：交流电压在发生变化前后的电压差。像素电极电压的变化值为：像素电极电压发生变化前后的最大电压差，即振幅。
例如，假设在t0时刻，像素电极上的电压为1V，第二公共电极上的电压为1V，在t1时刻第一频率的交流电压从1V跳变到3V，则第一频率的交流电压的变化值为2V(3V-1V)。由于像素电极上的电压仍为1V，第二公共电极上电压变为3V，使得第二公共电极与像素电极之间存在电压差。第二公共电极与像素电极间的电容就会因为电压差进行充电，使得像素电极的电压升高。像素电极电压的变化值是由第二公共电极上提供的第一频率的交流电压的变化值所确定的，具体满足的方式下面将详细描述。
其中，根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值，包括：
根据第二公共电极上第一频率的交流电压的变化值，以及第二公共电极与像素电极间的电容和第一公共电极与像素电极间的电容，确定像素电极电压的变化值。
具体地，每一个显示面板中，第一公共电极与像素电极间的电容，和第二公共电极与像素电极间的电容都是固定的。所以像素电极电压的变化值仅仅由第二公共电极上第一频率的交流电压的变化值确定。
其中，像素电极电压的变化值满足公式一：
Figure PCTCN2015089941-appb-000003
   (公式一)
其中，ΔVp代表像素电极电压的变化值；
C1代表第一公共电极与像素电极间的电容，C2代表第二公共电极与像素电极间的电容；
ΔV代表第一频率的交流电压的变化值。
其中，针对每一个显示面板，C1和C2的值是固定的，且C1可以等于C2，C1也可以不等于C2，本公开实施例不做限定。
S403、根据像素电极电压的变化值，确定像素电极亮度的变化值。
其中，当确定像素电极电压的变化值后，可以根据现有技术中的方法确定像素电极亮度的变化值。所以步骤S403中的方法与现有技术相同，此处不在赘述。
下面以具体实例描述本公开实施例提供的调节画面闪烁的方法带来的效果。
例如，当根据本公开实施例提供的显示面板结构制作完成该显示面板之后，第一公共电极与像素电极间的电容C1的值为A，第二公共电极与像素电极间的电容C2的值为B，第一频率的交流电压信号的频率为240HZ，幅值为-0.5V-0.5V。图5为第一频率的交流电压信号的波形图。
当施加如图5所示的第一频率的交流电压给第二公共电极后，第二公共电极上电压变化的频率为240HZ，电压的幅值为-0.5V至0.5V。通过电容C2的充电作用，使得像素电极上的电压发生变化，且像素电极上电压变化的频 率为240HZ。通过公式一可知，像素电极电压的变化值
Figure PCTCN2015089941-appb-000004
可知像素电极电压的变化值小于1V。通过多次试验证明，像素电极电压最高为1.8V，最低为1.5V，使得像素电极上的电压变化值为0.3V。然后根据现有技术中根据像素电极电压的变化值，从而确定像素电极亮度的变化值。
图6为本公开实施例提供的一种像素电极亮度变化曲线。从图6中可以看出，本公开实施例提供的像素电极亮度的变化频率大于现有技术中像素电极亮度的变化频率，且本公开实施例提供的像素电极亮度的变化值小于现有技术中像素电极亮度的变化值。
参见图7，其为根据本公开实施例提供的一种利用本公开实施例提供的阵列基板调试画面闪烁的装置，该装置包括：
施加电压单元71，用于在第二公共电极上施加第一频率的交流电压；
确定像素电极电压变化单元72，用于根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值；
确定像素电极亮度变化单元73，用于根据像素电极电压的变化值，确定像素电极亮度的变化值。
通过本公开实施例提供的调试画面闪烁的装置，当给第二公共电极施加第一频率的交流电压时，第二公共电极上的第一频率的交流电压会通过第二公共电极与像素电极之间的电容的作用，使得像素电极电压的变化频率为第一频率，从而增大了像素电极电压的变化频率，同时减小了像素电极电压的变化值，从而使得像素电极亮度的变化值减小，改善了显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
其中，确定像素电极电压变化单元72，具体用于：
根据第二公共电极上第一频率的交流电压的变化值，以及第一公共电极与像素电极间的电容和第二公共电极与像素电极间的电容，确定像素电极电压的变化值。
其中，像素电极电压的变化值满足如下公式：
Figure PCTCN2015089941-appb-000005
其中，ΔVp代表像素电极电压的变化值；
C1代表第一公共电极与像素电极间的电容；
C2代表第二公共电极与像素电极间的电容；
ΔV代表第一频率的交流电压的变化值。
本公开实施例提供的一种显示装置，包括本公开实施例提供的任一显示面板，以及本公开实施例提供的任一装置。
综上所述，本公开实施例提供一种显示面板、调试画面闪烁的方法及装置、显示装置。本公开实施例提供的显示面板中包括第二公共电极，当第一频率的交流电压提供给该第二公共电极后，因为第二公共电极与像素电极在基板上的投影具有重叠区域，使得第二公共电极与像素电极之间形成电容，通过该电容的充电和放电作用，引入第一频率的交流电压给像素电极，使得像素电极电压的频率为第一频率，从而增大了像素电极电压的频率，从而改善显示面板中画面闪烁的现象，使得画面闪烁不容易被人眼察觉。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (16)

  1. 一种显示面板，包括：基板、基板上交叉设置的数据线和栅线、以及由数据线和栅线围成的亚像素单元，
    其中，各亚像素单元包括薄膜晶体管、像素电极、第一公共电极和第二公共电极，且所述第二公共电极与用于提供第一频率的交流电压的输入端相连；
    其中，所述第二公共电极与所述像素电极在所述基板上的投影具有重叠区域。
  2. 根据权利要求1所述的显示面板，其中，所述数据线与用于提供第二频率的交流电压的输入端相连，且所述第一频率大于所述第二频率；
    其中，所述数据线还与所述像素电极相连，所述像素电极的电压变化的频率为第一频率。
  3. 根据权利要求1所述的显示面板，其中，所述像素电极、第一公共电极和第二公共电极均设置在阵列基板上，所述第一公共电极位于所述像素电极的上方，所述第二公共电极位于所述像素电极的下方；或者，
    所述第二公共电极位于所述像素电极的上方，所述第一公共电极位于所述像素电极的下方；或者，
    所述第二公共电极与所述第一公共电极同层设置。
  4. 根据权利要求1所述的显示面板，其中，所述像素电极和所述第二公共电极均设置在阵列基板上，所述第一公共电极设置在彩膜基板上，所述第二公共电极位于所述像素电极的上方或下方。
  5. 根据权利要求1所述的显示面板，其中，所述像素电极设置在阵列基板上，所述第二公共电极和第一公共电极均设置在彩膜基板上，所述第二公共电极位于所述第一公共电极的上方或下方；或者，
    所述第二公共电极与所述第一公共电极同层设置。
  6. 根据权利要求1所述的显示面板，其中，所述第二公共电极与所述像素电极在所述阵列基板中的基板上的投影具有重叠区域；
    所述第二公共电极与所述第一公共电极在所述阵列基板或彩膜基板中的 基板上的投影无重叠区域且相互绝缘。
  7. 根据权利要求1所述的显示面板，其中，所述第二公共电极由透明导电层或导电金属层构成。
  8. 根据权利要求1所述的显示面板，其中，所述第二公共电极位于彩膜基板或阵列基板的黑矩阵的投影内。
  9. 一种利用如权利要求1-8任一权项所述的显示面板调试画面闪烁的方法，其中，该方法包括：
    在所述第二公共电极上施加第一频率的交流电压；
    根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值；
    根据所述像素电极电压的变化值，确定像素电极亮度的变化值。
  10. 根据权利要求9所述的调试画面闪烁的方法，其中，根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值，包括：
    根据第二公共电极上第一频率的交流电压的变化值，以及第一公共电极与像素电极间的电容和第二公共电极与像素电极间的电容，确定像素电极电压的变化值。
  11. 根据权利要求10所述的调试画面闪烁的方法，其中，所述像素电极电压的变化值，满足如下公式：
    Figure PCTCN2015089941-appb-100001
    其中，ΔVp代表像素电极电压的变化值；
    C1代表第一公共电极与像素电极间的电容；
    C2代表第二公共电极与像素电极间的电容；
    ΔV代表第一频率的交流电压的变化值。
  12. 一种利用如权利要求1-8任一权项所述的显示面板调试画面闪烁的装置，包括：
    施加电压单元，用于在第二公共电极上施加第一频率的交流电压；
    确定像素电极电压变化单元，用于根据第二公共电极上第一频率的交流电压的变化值，确定像素电极电压的变化值；
    确定像素电极亮度变化单元，用于根据所述像素电极电压的变化值，确定像素电极亮度的变化值。
  13. 根据权利要求12所述的装置，其中，确定像素电极电压变化单元，具体用于：
    根据第二公共电极上第一频率的交流电压的变化值，以及第一公共电极与像素电极间的电容和第二公共电极与像素电极间的电容，确定像素电极电压的变化值。
  14. 根据权利要求13所述的装置，其中，所述像素电极电压的变化值满足如下公式：
    Figure PCTCN2015089941-appb-100002
    其中，ΔVp代表像素电极电压的变化值；
    C1代表第一公共电极与像素电极间的电容；
    C2代表第二公共电极与像素电极间的电容；
    ΔV代表第一频率的交流电压的变化值。
  15. 一种显示装置，包括如权利要求1-8任一权项所述的显示面板。
  16. 根据权利要求15所述的显示装置，还包括如权利要求12-14任一权项所述的装置。
PCT/CN2015/089941 2015-05-11 2015-09-18 显示面板、调试画面闪烁的方法及装置、显示装置 WO2016179936A1 (zh)

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