WO2018072312A1 - 补偿电路及有机发光二极管显示器 - Google Patents

补偿电路及有机发光二极管显示器 Download PDF

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Publication number
WO2018072312A1
WO2018072312A1 PCT/CN2016/111698 CN2016111698W WO2018072312A1 WO 2018072312 A1 WO2018072312 A1 WO 2018072312A1 CN 2016111698 W CN2016111698 W CN 2016111698W WO 2018072312 A1 WO2018072312 A1 WO 2018072312A1
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Prior art keywords
reset
signal
switch tube
energy storage
coupled
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Ceased
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PCT/CN2016/111698
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English (en)
French (fr)
Inventor
何健
许神贤
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/327,619 priority Critical patent/US10109236B2/en
Publication of WO2018072312A1 publication Critical patent/WO2018072312A1/zh
Anticipated expiration legal-status Critical
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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
    • G09G3/20—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]
    • G09G3/3225—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] using an active matrix
    • G09G3/3233—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] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • 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]
    • G09G3/3225—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] using an active matrix
    • G09G3/3258—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] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • 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
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • 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
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0254—Control of polarity reversal in general, other than for liquid crystal displays
    • G09G2310/0256—Control of polarity reversal in general, other than for liquid crystal displays with the purpose of reversing the voltage across a light emitting or modulating element within a 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
    • 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
    • G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
    • 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
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking
    • 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
    • G09G2320/0238—Improving the black level
    • 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
    • G09G2320/0252—Improving the response speed
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a compensation circuit and an organic light emitting diode display.
  • the active matrix light-emitting diode realizes display by controlling the current flowing through the light-emitting diode through the driving TFT.
  • the driving TFT is affected by factors such as illumination, source-drain voltage stress, etc., causing the threshold voltage to shift, thereby affecting the flow.
  • the current flowing through the LED causes the display of the panel to be uneven.
  • the threshold voltage shift of the driving transistor is usually compensated and restored by internal compensation, wherein the reset phase resets the potential of the gate and the source of the driving TFT, that is, charges the capacitor by resetting the initial signal Vini.
  • the voltage of the gate and source of the driving TFT is reset to Vini.
  • the time that can be allocated to the Reset phase is short, and the driving TFT is turned off, that is, VGL-Vini ⁇ Vth, and Vth is the shutdown threshold voltage of the driving TFT, which determines that the reset initial signal Vini cannot be set. Too low, so there is often insufficient charging of the Reset stage capacitor, which causes the gate potential of the driving TFT to not reach the preset potential Vini, which affects the final compensation effect. Therefore, it is necessary to design a way to shorten the charging time of the capacitor and improve the efficiency of the Reset.
  • the invention provides a compensation circuit, a display driving circuit and an organic light emitting diode display, which can quickly charge the reset energy storage component, shorten the charging time of the reset energy storage component in the Reset phase, and improve the reset efficiency.
  • a technical solution adopted by the present invention is to provide a compensation circuit, comprising: driving a switch tube for driving a load; resetting an energy storage element, coupling with a reset end of the drive switch tube; and resetting a charging circuit Coupling with the reset energy storage element, and outputting at least sequentially during resetting the drive switch Charging a signal and resetting an initial signal to the reset energy storage element, the fast charge signal for quickly charging the reset energy storage element, the reset initial signal being used to reset the energy storage
  • the voltage output from the component to the reset terminal of the drive switch tube is adjusted to a preset voltage.
  • the reset charging circuit includes a two-way multiplexer, and the two-way multiplexer includes a first reset signal input terminal, a second reset signal input terminal, a reset output terminal, and a reset a control terminal, the first reset signal input end inputs the fast charge signal, the second reset signal input end inputs the reset initial signal, and the reset control end inputs a strobe signal to sequentially select
  • the fast charging signal and the reset initial signal are respectively output from the reset output.
  • the method further includes a reset switch coupled to the reset charging circuit, a reset switch between the reset energy storage elements, and a first pulse input by the control terminal of the reset switch
  • the signal is synchronized with the strobe signal and has a pulse width greater than a pulse width of the strobe signal.
  • the first switch tube and the second switch tube are further included, the input end of the first switch tube inputs a reference signal, and the output end of the first switch tube is coupled to the reset energy storage element and the drive switch
  • the input end of the second switch tube is coupled to the output end of the first switch tube, and the output end of the second switch tube is coupled to the reset switch tube and the two paths Between the reset control terminals of the multiplexer; the control end of the second switch tube inputs the first pulse signal, and the control end of the first switch tube inputs a second pulse signal, the The two pulse signals are later than the first pulse signal.
  • the reset energy storage component includes a storage capacitor, and the two ends of the storage capacitor are respectively coupled to the gate and the source of the driving switch, and the source of the driving switch is coupled to the reset. Charging circuit.
  • the voltage of the fast charging signal is lower than the reset initial signal.
  • an organic light emitting diode display including a compensation circuit, the compensation circuit comprising: a driving switch tube for driving an organic light emitting diode; and a resetting energy storage element And a resetting end of the driving switch tube; a charging circuit coupled to the reset energy storage element, and at least sequentially outputting a fast charging signal and a reset initial signal during resetting the driving switch Up to the reset energy storage component, the fast charge signal is used to quickly charge the reset energy storage component, and the reset initial signal is used to input the reset energy storage component
  • the voltage to be reset to the drive switch tube is adjusted to a preset voltage.
  • the reset charging circuit includes a two-way multiplexer, and the two-way multiplexer includes a first reset signal input terminal, a second reset signal input terminal, a reset output terminal, and a reset a control terminal, the first reset signal input end inputs the fast charge signal, the second reset signal input end inputs the reset initial signal, and the reset control end inputs a strobe signal to sequentially select
  • the fast charging signal and the reset initial signal are respectively output from the reset output.
  • the method further includes a reset switch coupled to the reset charging circuit, a reset switch between the reset energy storage elements, and a first pulse input by the control terminal of the reset switch
  • the signal is synchronized with the strobe signal and has a pulse width greater than a pulse width of the strobe signal.
  • the first switch tube and the second switch tube are further included, the input end of the first switch tube inputs a reference signal, and the output end of the first switch tube is coupled to the reset energy storage element and the drive switch The input end of the second switch tube inputs the first pulse signal, and the output end of the second switch tube is coupled to the reset switch tube and the two-way multiplexer The control terminal of the second switch tube inputs the first pulse signal, the control end of the first switch tube inputs a second pulse signal, and the second pulse signal is compared.
  • the first pulse signal is late.
  • the invention has the beneficial effects that the compensation circuit, the display driving circuit and the organic light emitting diode display are provided, and the threshold voltage of the driving switch tube is internally compensated by introducing a multiplexer by introducing a multiplexer.
  • Reset stage strobe fast charging signal to quickly charge the reset energy storage component, can shorten the charging time of the reset energy storage component in the Reset phase, and improve the reset efficiency.
  • FIG. 1 is a schematic structural diagram of a circuit of an embodiment of a compensation circuit of the present invention.
  • FIG. 2 is a waveform timing diagram of an embodiment of the compensation circuit of the present invention.
  • FIG. 3 is a schematic diagram of comparison of a dual-potential switching of an embodiment of the compensation circuit of the present invention and a variation of a single-potential capacitor charging voltage of the prior art;
  • FIG. 4 is a schematic structural view of an embodiment of an organic light emitting diode display of the present invention.
  • FIG. 1 is a schematic structural diagram of a circuit of an embodiment of a compensation circuit according to the present invention.
  • the compensation circuit 10 includes a drive switch tube T3, a reset energy storage element 12, and a reset charging circuit 11.
  • the driving switch tube T3 is used to drive the load, and the source is electrically connected to the anode of the organic light emitting diode OLED, and the drain is connected to the positive power supply voltage OVDD.
  • the reset energy storage component 12 includes a storage capacitor.
  • the two ends of the storage capacitor C are respectively coupled to the gate and the source of the driving switch T3, and the source of the driving switch T3 is coupled to the reset charging circuit 11.
  • the reset charging circuit 11 includes a two-way multiplexer, and the two-way multiplexer includes a first reset signal input terminal 111, a second reset signal input terminal 112, a reset output terminal 113, and a heavy
  • the control terminal 114, the first reset signal input terminal 111 inputs the fast charge signal Vini_H, the second reset signal input terminal 112 inputs the reset initial signal Vini, and the reset control terminal 114 inputs the strobe signal SCN3 to sequentially select the fast charge.
  • the signal and reset initial signals are respectively output from the reset output terminal 113.
  • the reset charging circuit 11 is coupled to the reset energy storage element 12, and at least the fast charging signal and the reset initial signal are sequentially output to the reset energy storage element 12 during the resetting of the driving switch tube T3, and the charging device is fast charged.
  • the signal is used to quickly charge the reset energy storage element 12, and the reset initial signal is used to adjust the voltage of the reset energy storage element 12 to the reset end of the drive switch tube T3 to a preset voltage.
  • the compensation circuit 10 further includes a reset switch T4 coupled between the reset output terminal 113 of the reset charging circuit 11 and the reset energy storage element 12.
  • the first pulse signal SCN1 input by the control terminal of the reset switch tube T4 is synchronized with the strobe signal SCN3, and the pulse width is greater than the pulse width of the strobe signal SCN3.
  • the compensation circuit 10 further includes a first switch tube T1 and a second switch tube T2.
  • the input end of the first switch tube T1 inputs a reference signal V ref , and the output end of the first switch tube T1 is coupled to the reset energy storage element. 12 and the required reset end of the switch tube T3, and the input end of the second switch tube T2 is coupled to the output end of the first switch tube T1, and the output end of the second switch tube T2 is coupled to the reset switch tube T4 and the two way Between the reset control terminals 114 of the multiplexer.
  • control end of the second switch tube T2 inputs the first pulse signal SCN1
  • control end of the first switch tube T1 inputs the second pulse signal SCN2
  • the second pulse signal SCN2 is later than the first pulse signal SCN1.
  • FIG. 2 is a waveform timing diagram of an embodiment of the compensation circuit of the present invention.
  • the entire internal compensation process can include reset, threshold voltage (Vth) sensing (Sensing), data writing (Data writing), and emission (Emission). The details of the specific compensation process are detailed below. description.
  • the reset control terminal 114 of the reset charging circuit 11 inputs the strobe signal SCN3 to a high level, so that the first reset signal input terminal 111 inputs The fast charging signal Vini_H, wherein the potential of the fast charging signal Vini_H is lower than the potential of the reset initial signal Vini.
  • the control terminal of the second switching transistor T2 and the control terminal of the reset switching transistor T4 input the first pulse signal SCN1 to a high level, and control the control terminal of the first switching transistor T1 to input the second pulse signal SCN2 to be low.
  • the level is such that the second switch tube T2 and the reset switch tube T4 are turned on, and the first switch tube T1 is turned off, and the reset energy storage element 12 can be quickly charged.
  • the charging circuit 11 is reset by control.
  • the reset control terminal 114 inputs the strobe signal SCN3 to a low level to strobe the second reset signal input terminal 112 to input the reset initial signal Vini, and after the time t2, resets the energy storage element 12 to be sufficient to enable the switch
  • the voltage of the gate and source of the tube T3 is reset to the preset potential Vini.
  • the second reset signal input terminal 112 inputs the reset initial signal Vini during the t2 time period, and the purpose is that when the voltage of the gate and the source of the driving switch T3 is driven When resetting to the preset potential Vini, it is necessary to satisfy the closing condition of the driving switch tube T3, that is, VGL-Vini ⁇ Vth, where Vth is the closing threshold voltage of the driving switching tube T3, so the fast charging signal Vini_H cannot be strobed all the way in the Reset phase.
  • the reset energy storage component 12 is charged. Otherwise, when the reset energy storage component 12 is fully charged, the drive switch T3 shutdown voltage will be greater than its closed threshold voltage, and cannot be turned off.
  • the control terminal of the second switching transistor T2 and the control terminal of the reset switching transistor T4 are input with the first pulse signal SCN1 as a low level, and the control terminal input of the first switching transistor T1 is controlled.
  • the two-pulse signal SCN2 is at a high level, so that the second switching transistor T2 and the reset switching transistor T4 are turned off, and the first switching transistor T1 is turned on.
  • the gate voltage of the driving switching transistor T3 is Vref
  • the source voltage thereof becomes Vref-Vth
  • the condition that the threshold voltage of the driving switch T3 can be sensed is Vref-Vini>Vth, that is, the potential difference between the gate and the source of the driving switch T3 is greater than the threshold voltage Vth of the driving switch T3.
  • the drive switch T3 is turned on until the charge is full and the current is zero.
  • the second switch tube T2 and the reset switch tube T4 are turned off, the first switch tube T1 is turned on, and the first switch tube T1 is input to the reference signal Vref to become a high level Vdata.
  • the gate voltage of the driving switch T3 is Vdata
  • the source voltage thereof becomes Vref-Vth+ ⁇ V(t)
  • ⁇ V(t) (Vdata - Vref) * C / (C + COLED) is satisfied due to the instantaneous capacitive coupling effect of the energy storage element 12, wherein the COLED is the capacitance of the OLED.
  • the control end of the control switch 2 and the control end of the reset switch T4 input the first pulse signal SCN1 and the second pulse signal SCN2 of the control end of the first switch T1.
  • the fast charging signal is strobed to quickly charge the reset energy storage component, and the reset phase is shortened.
  • the charging time of the energy storage component is set, the Reset efficiency is improved, and the compensation effect on the threshold voltage of the driving transistor is improved.
  • FIG. 3 is a schematic diagram showing the comparison between the bipotential switching of the embodiment of the compensation circuit of the present invention and the variation of the charging voltage of the prior art single potential capacitor.
  • the dotted line is the voltage change of the energy storage element when the single-potential charging is performed in the prior art
  • the solid line is the voltage change of the energy storage element when the compensation circuit of the present invention is charged twice.
  • the double potential is specifically a fast charging signal Vini_H input from the first reset signal input end and the second reset signal input end, respectively, and the initial reset Start signal Vini.
  • V 0 is the initial voltage of the reset energy storage element
  • R is the resistance, which can be regarded as the resistance value of the wire
  • the voltage of the double voltage switching mode is reset to the speed of the Vini, and the speed of the single voltage capacitor charging is higher than that of the prior art
  • FIG. 4 is a schematic structural diagram of an embodiment of an organic light emitting diode display according to the present invention.
  • the OLED display 20 includes a compensation circuit 10 and an organic light emitting diode 22 .
  • the compensation circuit 10 includes a drive switch tube T3, a reset energy storage element 12, and a reset charging circuit 11.
  • the driving switch tube T3 is used to drive the load, and the source is electrically connected to the anode of the organic light emitting diode OLED, and the drain is connected to the positive power supply voltage OVDD.
  • the reset energy storage component 12 includes a storage capacitor.
  • the two ends of the storage capacitor C are respectively coupled to the gate and the source of the driving switch T3, and the source of the driving switch T3 is coupled to the reset charging circuit 11.
  • the reset charging circuit 11 includes a two-way multiplexer, and the two-way multiplexer includes a first reset signal input terminal 111, a second reset signal input terminal 112, a reset output terminal 113, and a heavy
  • the control terminal 114, the first reset signal input terminal 111 inputs the fast charge signal Vini_H, the second reset signal input terminal 112 inputs the reset initial signal Vini, and the reset control terminal 114 inputs the strobe signal SCN3 to sequentially select the fast charge.
  • the signal and reset initial signals are respectively output from the reset output terminal 113.
  • the reset charging circuit 11 is coupled to the reset energy storage component 12, and at least sequentially outputs a fast charging signal and a reset initial signal to the reset energy storage component 12 during the resetting of the driving switch T3, the fast charging signal
  • the reset initial signal is used to reset the voltage of the reset energy storage component 12 output to the reset terminal of the drive switch T3 to a preset voltage.
  • the compensation circuit 10 further includes a reset switch T4 coupled between the reset output terminal 113 of the reset charging circuit 11 and the reset energy storage element 12.
  • the first pulse signal SCN1 input by the control terminal of the reset switch tube T4 is synchronized with the strobe signal SCN3, and the pulse width is greater than the pulse width of the strobe signal SCN3.
  • the compensation circuit 10 further includes a first switch tube T1 and a second switch tube T2.
  • the input end of the first switch tube T1 inputs a reference signal V ref , and the output end of the first switch tube T1 is coupled to the reset energy storage element. 12 and the required reset end of the switch tube T3, and the input end of the second switch tube T2 is coupled to the output end of the first switch tube T1, and the output end of the second switch tube T2 is coupled to the reset switch tube T4 and the two way Between the reset control terminals 114 of the multiplexer.
  • control end of the second switch tube T2 inputs the first pulse signal SCN1
  • control end of the first switch tube T1 inputs the second pulse signal SCN2
  • the second pulse signal SCN2 is later than the first pulse signal SCN1.
  • the present invention provides a compensation circuit, a display driving circuit, and an organic light emitting diode display, which are internally compensated for resetting the threshold voltage of the driving switch by introducing a multiplexer. Reset, strobe fast charging signal to quickly charge the reset energy storage component, shorten the reset phase to reset the charging time of the energy storage component, and improve the reset efficiency.

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Abstract

一种补偿电路（10）及有机发光二极管显示器（20），补偿电路（10）包括：驱动开关管（T3），用于驱动负载；重置储能元件（12），与驱动开关管（T3）的需重置端耦接；重置充电电路（11），与重置储能元件（12）耦接，在重置驱动开关管（T3）期间至少依次输出快速充电信号（Vini_H）与重置初始信号（Vini）至重置储能元件（12），快速充电信号（Vini_H）用于对重置储能元件（12）进行快速充电，重置初始信号（Vini）用于将重置储能元件（12）输出至驱动开关管（T3）的需重置端的电压调整至预设电压。通过该方式，能够对重置储能元件（12）进行快速充电，缩短重置阶段重置储能元件（12）的充电时间，提高重置效率。

Description

补偿电路及有机发光二极管显示器 【技术领域】
本发明涉及显示技术领域，特别是涉及一种补偿电路及有机发光二极管显示器。
【背景技术】
有源矩阵发光二极管(AMOLED)通过驱动TFT控制流过发光二极管的电流实现显示，在使用过程中驱动TFT受到光照、源漏极电压应力等因素影响，导致其阈值电压产生偏移，进而影响流过发光二极管的电流，导致面板的显示不均。
目前，通常通过内部补偿的方式对驱动晶体管阈值电压偏移进行补偿恢复，其中重置(Reset)阶段将驱动TFT的栅极和源极的电位重置，即通过重置初始信号Vini为电容充电，使得驱动TFT的栅极和源极的电压被Reset至Vini。但在实际操作中可分配给Reset阶段的时间很短，同时需满足驱动TFT的关闭条件即VGL-Vini＜Vth，Vth为驱动TFT的关闭阈值电压，则决定了重置初始信号Vini不能设置的过低，因此常常会出现Reset阶段电容充电不足，导致驱动TFT栅极源极电位未达到预设电位Vini，影响最终的补偿效果，因此需要设计一种方式缩短电容充电时间，提升Reset的效率。
【发明内容】
本发明提供一种补偿电路及显示驱动电路及有机发光二极管显示器，能够对重置储能元件进行快速充电，缩短Reset阶段重置储能元件的充电时间，提高Reset效率。
本发明采用的一个技术方案是：提供一种补偿电路，包括：驱动开关管，用于驱动负载；重置储能元件，与所述驱动开关管的需重置端耦接；重置充电电路，与所述重置储能元件耦接，在重置所述驱动开关期间至少依次输出快速 充电信号与重置初始信号至所述重置储能元件，所述快速充电信号用于对所述重置储能元件进行快速充电，所述重置初始信号用于将所述重置储能元件输出至所述驱动开关管的需重置端的电压调整至预设电压。
其中，所述重置充电电路包括两路选通复用器，所述两路选通复用器包括第一重置信号输入端、第二重置信号输入端、重置输出端以及重置控制端，所述第一重置信号输入端输入所述快速充电信号，所述第二重置信号输入端输入所述重置初始信号，所述重置控制端输入选通信号，以依次选择所述快速充电信号、所述重置初始信号从所述重置输出端分别输出。
其中，进一步包括耦接于所述重置充电电路的所述重置输出端、所述重置储能元件之间的重置开关管，所述重置开关管的控制端输入的第一脉冲信号与所述选通信号同步，且脉冲宽度大于所述选通信号的脉冲宽度。
其中，进一步包括第一开关管、第二开关管，所述第一开关管的输入端输入参考信号，所述第一开关管的输出端耦接所述重置储能元件与所述驱动开关管的需重置端；所述第二开关管的输入端耦接所述第一开关管的输出端，所述第二开关管的输出端耦接所述重置开关管与所述两路选通复用器的所述重置控制端之间；所述第二开关管的控制端输入所述第一脉冲信号，所述第一开关管的控制端输入第二脉冲信号，所述第二脉冲信号较所述第一脉冲信号晚。
其中，所述重置储能元件包括储能电容，所述储能电容两端分别耦接所述驱动开关管的栅极、源极，所述驱动开关管的源极耦接所述重置充电电路。
其中，所述快速充电信号的电压低于所述重置初始信号。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种有机发光二极管显示器，包括补偿电路，所述补偿电路包括：驱动开关管，用于驱动有机发光二极管；重置储能元件，与所述驱动开关管的需重置端耦接；重置充电电路，与所述重置储能元件耦接，在重置所述驱动开关期间至少依次输出快速充电信号与重置初始信号至所述重置储能元件，所述快速充电信号用于对所述重置储能元件进行快速充电，所述重置初始信号用于将所述重置储能元件输 出至所述驱动开关管的需重置端的电压调整至预设电压。
其中，所述重置充电电路包括两路选通复用器，所述两路选通复用器包括第一重置信号输入端、第二重置信号输入端、重置输出端以及重置控制端，所述第一重置信号输入端输入所述快速充电信号，所述第二重置信号输入端输入所述重置初始信号，所述重置控制端输入选通信号，以依次选择所述快速充电信号、所述重置初始信号从所述重置输出端分别输出。
其中，进一步包括耦接于所述重置充电电路的所述重置输出端、所述重置储能元件之间的重置开关管，所述重置开关管的控制端输入的第一脉冲信号与所述选通信号同步，且脉冲宽度大于所述选通信号的脉冲宽度。
其中，进一步包括第一开关管、第二开关管，所述第一开关管的输入端输入参考信号，所述第一开关管的输出端耦接所述重置储能元件与所述驱动开关管的需重置端；所述第二开关管的输入端输入所述第一脉冲信号，所述第二开关管的输出端耦接所述重置开关管与所述两路选通复用器的所述重置控制端之间；所述第二开关管的控制端输入所述第一脉冲信号，所述第一开关管的控制端输入第二脉冲信号，所述第二脉冲信号较所述第一脉冲信号晚。
本发明的有益效果是：区别于现有技术的情况，本发明提供一种补偿电路及显示驱动电路及有机发光二极管显示器，通过引入选通复用器，在对驱动开关管阈值电压进行内部补偿的重置阶段(Reset)，选通快速充电信号对重置储能元件进行快速充电，能够缩短Reset阶段重置储能元件的充电时间，提高Reset效率。
【附图说明】
图1是本发明补偿电路一实施方式的电路结构示意图；
图2是本发明补偿电路一实施方式工作的波形时序图；
图3是本发明补偿电路一实施方式双电位切换以及现有技术单电位电容充电电压变化的对比示意图；
图4是本发明有机发光二极管显示器一实施方式的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域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他实施例，都属于本发明保护的范围。
请参阅图1，图1是本发明补偿电路一实施方式的电路结构示意图。如图1所示，该补偿电路10包括驱动开关管T3、重置储能元件12以及重置充电电路11。
其中，驱动开关管T3用于驱动负载，其源极电性连接有机发光二极管OLED的阳极，漏极接入正电源电压OVDD。
进一步地，重置储能元件12包括储能电容，储能电容C两端分别耦接驱动开关管T3的栅极、源极，驱动开关管T3的源极耦接重置充电电路11。
进一步地，重置充电电路11包括两路选通复用器，两路选通复用器包括第一重置信号输入端111、第二重置信号输入端112、重置输出端113以及重置控制端114，第一重置信号输入端111输入快速充电信号Vini_H，第二重置信号输入端112输入重置初始信号Vini，重置控制端114输入选通信号SCN3，以依次选择快速充电信号、重置初始信号从重置输出端113分别输出。
在具体实施例中，重置充电电路11与重置储能元件12耦接，在重置驱动开关管T3期间至少依次输出快速充电信号与重置初始信号至重置储能元件12，快速充电信号用于对重置储能元件12进行快速充电，重置初始信号用于将所述重置储能元件12输出至驱动开关管T3的需重置端的电压调整至预设电压。
除此之外，该补偿电路10进一步包括耦接于重置充电电路11的重置输出端113、重置储能元件12之间的重置开关管T4。其中，重置开关管T4的控制端输入的第一脉冲信号SCN1与选通信号SCN3同步，且脉冲宽度大于选通信号SCN3的脉冲宽度。
进一步地，该补偿电路10还包括第一开关管T1、第二开关管T2，第一开关管T1的输入端输入参考信号Vref，第一开关管T1的输出端耦接重置储能元件12与驱动开关管T3的需重置端，且第二开关管T2的输入端耦接第一开关管T1 的输出端，第二开关管T2的输出端耦接重置开关管T4与两路选通复用器的重置控制端114之间。
具体地，第二开关管T2的控制端输入第一脉冲信号SCN1，第一开关管T1的控制端输入第二脉冲信号SCN2，且第二脉冲信号SCN2较第一脉冲信号SCN1晚。
请参阅图2，图2是本发明补偿电路一实施方式工作的波形时序图。简单来说，整个内部补偿过程可以包括重置(Reset)、阈值电压(Vth)感测(Sensing)、数据写入(Data writing)以及发射(Emission)四个阶段，下面就具体补偿过程进行详细描述。
在本发明的一个应用场景中，在该补偿电路10的Reset阶段，重置充电电路11的重置控制端114输入选通信号SCN3为高电平，以使得第一重置信号输入端111输入快速充电信号Vini_H，其中，所述快速充电信号Vini_H的电位低于重置初始信号Vini的电位。与此同时，控制第二开关管T2的控制端及重置开关管T4的控制端输入第一脉冲信号SCN1为高电平，控制第一开关管T1的控制端输入第二脉冲信号SCN2为低电平，以使得第二开关管T2及重置开关管T4导通，第一开关管T1截止，可以将重置储能元件12快速充电，经过t1时间后，通过控制重置充电电路11的重置控制端114输入选通信号SCN3为低电平，来选通第二重置信号输入端112输入重置初始信号Vini，经过t2时间后将重置储能元件12充足，以使得驱动开关管T3的栅极、源极的电压被重置为预设电位Vini。
需要说明的是，在具体实施例中，t2时间段内选通第二重置信号输入端112输入重置初始信号Vini，其目的在于，当驱动开关管T3的栅极、源极的电压被重置为预设电位Vini的同时需满足驱动开关管T3的关闭条件，即VGL-Vini＜Vth，其中Vth为驱动开关管T3的关闭阈值电压，故在Reset阶段不能一直选通快速充电信号Vini_H对重置储能元件12进行充电，否则当重置储能元件12充电完成时，则驱动开关管T3关闭电压会大于其关闭的阈值电压，而无法进行关闭。
请继续参阅图2，在Sensing阶段，控制第二开关管T2的控制端及重置开关管T4的控制端输入第一脉冲信号SCN1为低电平，控制第一开关管T1的控制端输入第二脉冲信号SCN2为高电平，以使得第二开关管T2及重置开关管T4截止，第一开关管T1导通。此时，第一开关管T1输入参考信号Vref为低电平，则驱动开关管T3的栅极电压为Vref，经过驱动开关管T3后，其源极电压变为 Vref-Vth，栅极源极间或重置储能元件12两侧电位差为Vgs＝Vth，故驱动开关管T3导通，重置储能元件12存储驱动开关管T3的阈值电压Vth。
需要说明的是，能够感测到驱动开关管T3的阈值电压的条件为Vref-Vini＞Vth，也就是驱动开关管T3栅极源极间电位差要大于驱动开关管T3的阈值电压Vth，才能将驱动开关管T3导通，直至电荷充满，电流为0。其次，为了使OLED不发光，需满足驱动开关管T3的源极电压小于或等于OLED的阈值电压，才不会对Sensing到驱动开关管T3的Vth有影响。
进一步参阅图2，在Data writing阶段，保持第二开关管T2及重置开关管T4截止，第一开关管T1导通，同时，将第一开关管T1输入参考信号Vref变为高电平Vdata，则驱动开关管T3的栅极电压为Vdata，，其源极电压变为Vref-Vth+ΔV(t)，栅极源极间或重置储能元件12两侧电位差为Vgs＝Vdata-Vref+Vth-ΔV(t)，其中由于重置储能元件12瞬间的电容耦合效应，则满足ΔV(t)＝(Vdata-Vref)*C/(C+COLED)，其中COLED为OLED的电容。
进一步参阅图2，在Emitting阶段，控制控制第二开关管T2的控制端及重置开关管T4的控制端输入第一脉冲信号SCN1为及第一开关管T1的控制端输入第二脉冲信号SCN2为低电平，则第一开关管T1、第二开关管T2及重置开关管T4均截止，则流出驱动开关管T3的电流为I＝K(Vgs-Vth)2＝K(Vdata-Vref-ΔV(t))2，其中K＝W/L×C1×u，W为驱动晶体管T3沟道宽度，L是驱动晶体管T3沟道长度，C1是驱动晶体管T3沟道与栅极间的本征电容，u为驱动晶体管T3沟道的载流子迁移速率。由公式可以看出，流经OLED的电流与驱动晶体管T3的阈值电压Vth无关，消除了驱动晶体管T3的阈值电压Vth对通过驱动晶体管T3的驱动电流I的影响。
上述实施方式中，通过引入选通复用器，在对驱动开关管阈值电压进行内部补偿的重置阶段(Reset)，选通快速充电信号对重置储能元件进行快速充电，缩短Reset阶段重置储能元件的充电时间，提高Reset效率，并且提升了对驱动晶体管阈值电压的补偿效果。
请参阅图3，图3是采用本发明补偿电路一实施方式双电位切换以及现有技术单电位电容充电电压变化的对比示意图。如图，其中，虚线为现有技术单电位充电时，重置储能元件的电压变化情况，实线为采用本发明补偿电路双电位充电时，重置储能元件的电压变化情况。其中，所述的双电位具体为分别从第一重置信号输入端及第二重置信号输入端输入的快速充电信号Vini_H及重置初 始信号Vini。
具体地，根据重置储能元件充电公式可知，单电压Reset阶段电压变化为：Vt＝V0+(Vini-V0)*(1-e(-t/RC))；双电压Reset阶段电压变化为：Vt1＝V0+(Vini_H-V0)*(1-e(-t1/RC))，Vt2＝V0+(Vini-Vt1)*(1-e(-t2/RC))其中，V0为重置储能元件的初始电压，R为电阻，这里可视为导线阻值，C为重置储能元件的容值，其中双电压在t＝RC时切换电压，如图3箭头所示，可以明显看出双电压切换的方式电压被重置为Vini的速度优于现有技术单电压电容充电的方式，其Reset的效率更高。
请参阅图1及图4，图4为本发明有机发光二极管显示器一实施方式的结构示意图。其中，该有机发光二极管显示器20包括补偿电路10及有机发光二极管22。该补偿电路10包括驱动开关管T3、重置储能元件12以及重置充电电路11。
其中，驱动开关管T3用于驱动负载，其源极电性连接有机发光二极管OLED的阳极，漏极接入正电源电压OVDD。
进一步地，重置储能元件12包括储能电容，储能电容C两端分别耦接驱动开关管T3的栅极、源极，驱动开关管T3的源极耦接重置充电电路11。
进一步地，重置充电电路11包括两路选通复用器，两路选通复用器包括第一重置信号输入端111、第二重置信号输入端112、重置输出端113以及重置控制端114，第一重置信号输入端111输入快速充电信号Vini_H，第二重置信号输入端112输入重置初始信号Vini，重置控制端114输入选通信号SCN3，以依次选择快速充电信号、重置初始信号从重置输出端113分别输出。
在具体实施例中，重置充电电路11与重置储能元件12耦接，在重置驱动开关T3期间至少依次输出快速充电信号与重置初始信号至重置储能元件12，快速充电信号用于对重置储能元件12进行快速充电，重置初始信号用于述重置储能元件12输出至驱动开关管T3的需重置端的电压调整至预设电压。
除此之外，该补偿电路10进一步包括耦接于重置充电电路11的重置输出端113、重置储能元件12之间的重置开关管T4。其中，重置开关管T4的控制端输入的第一脉冲信号SCN1与选通信号SCN3同步，且脉冲宽度大于选通信号SCN3的脉冲宽度。
进一步地，该补偿电路10还包括第一开关管T1、第二开关管T2，第一开关管T1的输入端输入参考信号Vref，第一开关管T1的输出端耦接重置储能元件12与驱动开关管T3的需重置端，且第二开关管T2的输入端耦接第一开关管T1 的输出端，第二开关管T2的输出端耦接重置开关管T4与两路选通复用器的重置控制端114之间。
具体地，第二开关管T2的控制端输入第一脉冲信号SCN1，第一开关管T1的控制端输入第二脉冲信号SCN2，且第二脉冲信号SCN2较第一脉冲信号SCN1晚。
需要说明的是，本发明有机发光二极管显示器20中的补偿电路10的具体实施方式可参照上文的详细描述，此处不再重复赘述。
综上所述，本领域技术人员容易理解，本发明提供一种补偿电路及显示驱动电路及有机发光二极管显示器，通过引入选通复用器，在对驱动开关管阈值电压进行内部补偿的重置阶段(Reset)，选通快速充电信号对重置储能元件进行快速充电，缩短Reset阶段重置储能元件的充电时间，提高Reset效率。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (14)

  1. 一种补偿电路，其中，包括：
    驱动开关管，用于驱动负载；
    重置储能元件，与所述驱动开关管的需重置端耦接；
    重置充电电路，包括两路选通复用器，所述两路选通复用器包括第一重置信号输入端、第二重置信号输入端、重置输出端以及重置控制端；
    重置开关管，耦接于所述重置充电电路的所述重置输出端、所述重置储能元件之间；
    其中，在重置所述驱动开关管期间，所述第一重置信号输入端输入快速充电信号，所述第二重置信号输入端输入重置初始信号，所述重置控制端输入选通信号，以依次选择所述快速充电信号、所述重置初始信号从所述重置输出端分别输出；
    所述快速充电信号用于对所述重置储能元件进行快速充电，所述重置初始信号用于将所述重置储能元件输出至所述驱动开关管的需重置端的电压调整至预设电压；
    所述重置开关管的控制端输入的第一脉冲信号与所述选通信号同步，且脉冲宽度大于所述选通信号的脉冲宽度。
  2. 根据权利要求1所述的补偿电路，其中，
    进一步包括第一开关管、第二开关管，所述第一开关管的输入端输入参考信号，所述第一开关管的输出端耦接所述重置储能元件与所述驱动开关管的需重置端；所述第二开关管的输入端耦接所述第一开关管的输出端，所述第二开关管的输出端耦接所述重置开关管与所述两路选通复用器的所述重置控制端之间；
    所述第二开关管的控制端输入所述第一脉冲信号，所述第一开关管的控制端输入第二脉冲信号，所述第二脉冲信号较所述第一脉冲信号晚。
  3. 根据权利要求1所述的补偿电路，其中，
    所述重置储能元件包括储能电容，所述储能电容两端分别耦接所述驱动开关管的栅极、源极，所述驱动开关管的源极耦接所述重置充电电路。
  4. 根据权利要求3所述的补偿电路，其中，
    所述快速充电信号的电压低于所述重置初始信号。
  5. 一种补偿电路，其中，包括：
    驱动开关管，用于驱动负载；
    重置储能元件，与所述驱动开关管的需重置端耦接；
    重置充电电路，与所述重置储能元件耦接，在重置所述驱动开关期间至少依次输出快速充电信号与重置初始信号至所述重置储能元件，所述快速充电信号用于对所述重置储能元件进行快速充电，所述重置初始信号用于将所述重置储能元件输出至所述驱动开关管的需重置端的电压调整至预设电压。
  6. 根据权利要求5所述的补偿电路，其中，
    所述重置充电电路包括两路选通复用器，所述两路选通复用器包括第一重置信号输入端、第二重置信号输入端、重置输出端以及重置控制端，所述第一重置信号输入端输入所述快速充电信号，所述第二重置信号输入端输入所述重置初始信号，所述重置控制端输入选通信号，以依次选择所述快速充电信号、所述重置初始信号从所述重置输出端分别输出。
  7. 根据权利要求5所述的补偿电路，其中，
    进一步包括耦接于所述重置充电电路的重置输出端、所述重置储能元件之间的重置开关管，所述重置开关管的控制端输入的第一脉冲信号与所述选通信号同步，且脉冲宽度大于所述选通信号的脉冲宽度。
  8. 根据权利要求5所述的补偿电路，其中，
    进一步包括第一开关管、第二开关管，所述第一开关管的输入端输入参考信号，所述第一开关管的输出端耦接所述重置储能元件与所述驱动开关管的需重置端；所述第二开关管的输入端耦接所述第一开关管的输出端，所述第二开关管的输出端耦接所述重置开关管与所述两路选通复用器的所述重置控制端之间；
    所述第二开关管的控制端输入所述第一脉冲信号，所述第一开关管的控制端输入第二脉冲信号，所述第二脉冲信号较所述第一脉冲信号晚。
  9. 根据权利要求5所述的补偿电路，其中，
    所述重置储能元件包括储能电容，所述储能电容两端分别耦接所述驱动开关管的栅极、源极，所述驱动开关管的源极耦接所述重置充电电路。
  10. 根据权利要求9所述的补偿电路，其中，
    所述快速充电信号的电压低于所述重置初始信号。
  11. 一种有机发光二极管显示器，其中，包括补偿电路，所述补偿电路包括：
    驱动开关管，用于驱动有机发光二极管；
    重置储能元件，与所述驱动开关管的需重置端耦接；
    重置充电电路，与所述重置储能元件耦接，在重置所述驱动开关管期间至少依次输出快速充电信号与重置初始信号至所述重置储能元件，所述快速充电信号用于对所述重置储能元件进行快速充电，所述重置初始信号用于将所述重置储能元件输出至所述驱动开关管的需重置端的电压调整至预设电压。
  12. 根据权利要求11所述的显示器，其中，
    所述重置充电电路包括两路选通复用器，所述两路选通复用器包括第一重置信号输入端、第二重置信号输入端、重置输出端以及重置控制端，所述第一重置信号输入端输入所述快速充电信号，所述第二重置信号输入端输入所述重置初始信号，所述重置控制端输入选通信号，以依次选择所述快速充电信号、所述重置初始信号从所述重置输出端分别输出。
  13. 根据权利要求11所述的显示器，其中，
    进一步包括耦接于所述重置充电电路的所述重置输出端、所述重置储能元件之间的重置开关管，所述重置开关管的控制端输入的第一脉冲信号与所述选通信号同步，且脉冲宽度大于所述选通信号的脉冲宽度。
  14. 根据权利要求11所述的显示器，其中，
    进一步包括第一开关管、第二开关管，所述第一开关管的输入端输入参考信号，所述第一开关管的输出端耦接所述重置储能元件与所述驱动开关管的需重置端；所述第二开关管的输入端输入所述第一脉冲信号，所述第二开关管的输出端耦接所述重置开关管与所述两路选通复用器的所述重置控制端之间；
    所述第二开关管的控制端输入所述第一脉冲信号，所述第一开关管的控制端输入第二脉冲信号，所述第二脉冲信号较所述第一脉冲信号晚。
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