WO2017041343A1 - Amoled实时补偿系统 - Google Patents

Amoled实时补偿系统 Download PDF

Info

Publication number
WO2017041343A1
WO2017041343A1 PCT/CN2015/091717 CN2015091717W WO2017041343A1 WO 2017041343 A1 WO2017041343 A1 WO 2017041343A1 CN 2015091717 W CN2015091717 W CN 2015091717W WO 2017041343 A1 WO2017041343 A1 WO 2017041343A1
Authority
WO
WIPO (PCT)
Prior art keywords
thin film
film transistor
driving
real
data signal
Prior art date
Application number
PCT/CN2015/091717
Other languages
English (en)
French (fr)
Inventor
梁鹏飞
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to JP2018512297A priority Critical patent/JP2018528476A/ja
Priority to GB1803467.8A priority patent/GB2556799B/en
Priority to US14/787,770 priority patent/US9940878B2/en
Priority to KR1020187006682A priority patent/KR102007614B1/ko
Publication of WO2017041343A1 publication Critical patent/WO2017041343A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • 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
    • G09G2300/0833—Several active elements per pixel in active matrix panels forming a linear amplifier or follower
    • G09G2300/0838—Several active elements per pixel in active matrix panels forming a linear amplifier or follower with level shifting
    • 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
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • 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
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • 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
    • G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an AMOLED real-time compensation system.
  • OLED Organic Light Emitting Display
  • OLED Organic Light Emitting Display
  • Many advantages such as large-area full-color display are recognized by the industry as the most promising display device.
  • the OLED display device can be divided into two types: passive matrix OLED (PMOLED) and active matrix OLED (AMOLED), namely direct addressing and thin film transistor (Thin Film Transistor, according to the driving method). TFT) matrix addressing two types.
  • the AMOLED has pixels arranged in an array, belongs to an active display type, has high luminous efficiency, and is generally used as a high-definition large-sized display device. Since the thin film transistor driving the organic light emitting diode and the organic light emitting diode themselves have threshold voltage deviations, the AMOLED display device usually needs to set a compensation system to compensate.
  • FIG. 1 is a schematic structural diagram of a conventional AMOLED compensation system, including a plurality of pixel units 10 arranged in a matrix, electrically connected to a source driving module 20 of each element unit 10, and electrically connected to each pixel unit 10
  • the gate driving module 30, the detecting and opening module 40 electrically connected to each pixel unit 10, the detecting module 50 electrically connected to each pixel unit 10, the electrically connected source driving module 20, the gate driving module 30, and the detecting
  • the module 40, the control module 60 of the detection module 50, and the storage module 70 of the control module 60 are electrically connected.
  • 2 is a circuit diagram of a pixel unit 10 of FIG. 1.
  • the pixel unit 10 includes a first TFT T10, a second TFT T20, a third TFT T30, a capacitor C10, and an organic light emitting diode D10.
  • the gate of the first TFT T10 is connected to the gate driving signal WR provided by the gate driving module 30, the source is connected to the data signal data provided by the source driving module 20, and the gate of the second TFT T20 is
  • the drain of the TFT T10 is electrically connected, the drain is connected to the constant voltage high potential Vdd, and the source is connected to the node A10; the gate of the third TFT T30 is connected to the detection enable signal RD provided by the open module 40, and the source is connected.
  • the drain is connected to the detecting module 50 through a trace L; the anode of the organic light emitting diode D10 is connected to the node A10, and the cathode is grounded; one end of the capacitor C10 is electrically connected to the gate of the second TFT T20, and the other end is electrically connected. Connect to node A10.
  • the working process of the existing AMOLED compensation system includes TFT detection, organic light emitting diode detection, and display phase.
  • the TFT detecting process is: the gate driving signal WR is pulled high by the gate driving module 30, and the source driving module 20 outputs the high potential data signal data to the second TFT T20, and the second TFT T20 is turned on.
  • the detection enable module 40 sets the detection enable signal RD high, the third TFT T30 is turned on, and the current flows into the detection module 50 through the trace L; the detection module 50 transmits the measured current value to the control module 60; the control module
  • the threshold voltage deviation value of the second TFT T20 is calculated and stored in the memory module 70.
  • the OLED detection process is: the gate driving signal WR is pulled up by the gate driving module 30, the first TFT T10 is turned on, and the source driving module 20 outputs the data signal data of the low potential to the second TFT T20, the second TFT. T20 is turned off; the detection on module 40 sets the detection enable signal RD high, the third TFT T30 is turned on, the detection module 50 discharges the organic light emitting diode D10 through the trace L; the detection module 50 transmits the current value measured at this time to
  • the control module 60 calculates the threshold voltage deviation value of the organic light emitting diode D10 and exists in the storage module 70.
  • the data signal data is input into the control module 60.
  • the control module 60 performs data signal data according to the threshold voltage deviation value of the TFT T20 stored in the storage module 70 and the threshold voltage deviation value of the organic light emitting diode D10. Compensation is then displayed on the AMOLED panel.
  • the compensated data signal data is output through the source driving module 20, and the data signals of 0 and 255 gray scales cannot be effectively compensated, and real-time measurement and real-time compensation cannot be performed for each pixel unit. .
  • the object of the present invention is to provide an AMOLED real-time compensation system, which can effectively compensate all gray-scale data signals, and can perform real-time measurement and real-time compensation for each pixel unit.
  • the present invention provides an AMOLED real-time compensation system, comprising: a plurality of pixel units arranged in a matrix, and a source driving and a real-time detection compensation integrated by electrically connecting each column of pixel units through a data line and a detection line.
  • the module is electrically connected to the gate driving module of each row of pixel units, the detection opening module electrically connecting each column of pixel units, and the electrically connected source driving and real-time detection compensation integrated module, the gate driving module, and the detecting opening module Control module
  • the pixel unit includes a switching thin film transistor, a driving thin film transistor, a detecting thin film transistor, and an organic light emitting diode;
  • the gate driving module is configured to provide a gate driving signal to each row of pixel units
  • the detection opening module is configured to provide a detection enable signal to each column of pixel units
  • the source driving and real-time detection compensation integrated module includes a latch buffer unit and a driving film a transistor source target voltage acquisition unit, a first operational amplifier, and a second operational amplifier;
  • the latch buffer unit is configured to receive, latch, buffer, and output a data signal;
  • the driving thin film transistor source target voltage acquiring unit Electrically connecting a latch buffer unit, configured to calculate a source target voltage of the driving thin film transistor according to a function f(data) of a source voltage of the driving thin film transistor and a data signal;
  • the first operational amplifier is electrically connected to the driving film
  • the transistor source target voltage obtaining unit and the pixel unit have positive and negative input terminals respectively connected to the driving target voltage of the driving thin film transistor and the actual voltage of the driving thin film transistor source, and the output terminal outputs the source target voltage and the actual voltage of the driving thin film transistor.
  • the difference is used to detect the threshold voltage deviation of the driving thin film transistor in real time;
  • the second operational amplifier is electrically connected to the latch buffer unit and the pixel unit, and the positive input terminal is connected to the data signal, and the negative input terminal is grounded through the first switch Connected to the output of the first operational amplifier, the output first outputs the data signal The voltage of the signal is then summed with the voltage of the output of the first operational amplifier to compensate the threshold voltage deviation of the driving thin film transistor in real time.
  • the gate of the switching thin film transistor is connected to the gate driving signal, and the source is electrically connected to the output end of the second operational amplifier through the data line;
  • the gate of the driving thin film transistor is electrically connected to the drain of the switching thin film transistor,
  • the drain is connected to a constant voltage and a high potential, and the source is connected to the node;
  • the gate of the detecting thin film transistor is connected to the detection open signal, the source is connected to the node, and the drain is electrically connected to the negative input terminal of the first operational amplifier through the detecting line;
  • the anode of the organic light emitting diode is electrically connected to the node, and the cathode is grounded.
  • the pixel unit further includes a storage capacitor, one end of the storage capacitor is electrically connected to the gate of the driving thin film transistor, and the other end is electrically connected to the node.
  • the source driving and real-time detection compensation integration module further includes a current detecting unit electrically connected to the control module, and the current detecting unit is turned on or off with the detecting line through the second switch.
  • the AMOLED real-time compensation system further includes a storage module electrically connected to the control module, the control module calculates a threshold voltage deviation of the organic light emitting diode according to the current value measured by the current detecting unit, and the storage module is configured to store the The threshold voltage deviation of the LED.
  • the working process of the AMOLED real-time compensation system is divided into five stages in sequence:
  • Data signal input stage the control module controls the data signal input source drive and the real-time detection compensation integrated module, and is latched in the latch buffer unit;
  • Data signal output stage the gate drive signal is high potential, the data signal is high potential, the detection turn-on signal is low potential, the first switch is grounded, the second operational amplifier output terminal outputs a data signal, and the switching thin film transistor is turned on and driven The thin film transistor is turned on;
  • the driving thin film transistor source target voltage acquiring unit is based on a signal for driving the source transistor target voltage and the data signal of the thin film transistor Number relationship f (data) to calculate the source target voltage of the driving thin film transistor;
  • Driving the thin film transistor threshold voltage deviation real-time detection phase detecting the turn-on signal is set to a high potential, detecting the thin film transistor is turned on, the positive and negative input terminals of the first operational amplifier are respectively connected to the driving thin film transistor source target voltage and the driving thin film transistor source The actual voltage, the output of the output terminal drives the difference between the source target voltage of the thin film transistor and the actual voltage;
  • the first switch is connected to the output end of the first operational amplifier, the positive input end of the second operational amplifier is connected to the data signal, the negative input terminal is connected to the output end of the first operational amplifier, and the output is output The sum of the data signal voltage and the voltage at the output of the first operational amplifier;
  • Display phase the gate drive signal and the detection enable signal are turned to a low potential, the switching thin film transistor and the detection thin film transistor are turned off, and the organic light emitting diode emits light.
  • the working process of the AMOLED real-time compensation system further includes an organic light-emitting diode threshold voltage deviation detection stage before the data signal input stage: the gate drive signal is high, the data signal is low, and the detection turn-on signal is high.
  • the first switch is grounded, the second switch is closed, the driving thin film transistor is turned off, the detecting thin film transistor is turned on, the current detecting unit is electrically connected to the detecting line through the second switch, and the current detecting unit passes the detecting line to the organic light emitting diode Discharging, the current detecting unit transmits the measured current value to the control module, and the control module calculates a threshold voltage deviation value of the organic light emitting diode, and exists in the storage module;
  • control module first compensates the threshold voltage deviation of the organic light emitting diode to the data signal, and then inputs the compensated data signal into the source driving and real-time detection compensation integration module.
  • the first switch is grounded under the control of a low potential, and is connected to the output of the first operational amplifier under the control of a high potential.
  • the present invention also provides an AMOLED real-time compensation system, comprising: a plurality of pixel units arranged in a matrix, a source driving and a real-time detection compensation integrated module electrically connected to each column of pixel units through a data line, and a detection line, and an electrical property a gate driving module connecting each row of pixel units, a detection opening module electrically connected to each column of pixel units, and an electrical connection source driving and real-time detection compensation integration module, a gate driving module, and a control module for detecting the opening module;
  • the pixel unit includes a switching thin film transistor, a driving thin film transistor, a detecting thin film transistor, and an organic light emitting diode;
  • the gate driving module is configured to provide a gate driving signal to each row of pixel units
  • the detection opening module is configured to provide a detection enable signal to each column of pixel units
  • the source driving and real-time detection compensation integration module includes a latch buffer unit, a driving thin film transistor source target voltage acquiring unit, a first operational amplifier, and a second operational amplifier;
  • the latch buffer unit is configured to receive, latch, buffer, and output a data signal;
  • the driving thin film transistor source target voltage acquiring unit is electrically connected to the latch buffer unit for driving the source voltage and data of the thin film transistor according to the source
  • the function relationship f(data) of the signal is used to calculate the source target voltage of the driving thin film transistor;
  • the first operational amplifier is electrically connected to the source target voltage acquiring unit and the pixel unit of the driving thin film transistor, and the positive and negative input terminals thereof are respectively connected.
  • the amplifier is electrically connected to the latch buffer unit and the pixel unit, and the positive input terminal is connected to the data signal, and the negative input terminal is first grounded and then connected to the output end of the first operational amplifier through the first switch, and the output terminal first outputs the data signal voltage, and then outputs.
  • the sum of the data signal voltage and the voltage at the output of the first operational amplifier, in pairs The threshold voltage deviation of the driving thin film transistor is compensated in real time;
  • the gate of the switching thin film transistor is connected to the gate driving signal, and the source is electrically connected to the output end of the second operational amplifier through the data line; the gate of the driving thin film transistor and the drain electrical property of the switching thin film transistor Connected, the drain is connected to a constant voltage high potential, and the source is connected to the node; the gate of the detecting thin film transistor is connected to the detection open signal, the source is connected to the node, and the drain is electrically connected to the negative input terminal of the first operational amplifier through the detecting line.
  • the anode of the organic light emitting diode is electrically connected to the node, and the cathode is grounded;
  • the pixel unit further includes a storage capacitor, one end of the storage capacitor is electrically connected to the gate of the driving thin film transistor, and the other end is electrically connected to the node;
  • the source driving and real-time detection compensation integration module further includes a current detecting unit electrically connected to the control module, and the current detecting unit is turned on or off with the detecting line through the second switch;
  • the device further includes a storage module electrically connected to the control module, wherein the control module calculates a threshold voltage deviation of the organic light emitting diode according to the current value measured by the current detecting unit, and the storage module is configured to store the threshold voltage of the light emitting diode of the machine deviation;
  • the working process of the AMOLED real-time compensation system is divided into five stages in sequence:
  • Data signal input stage the control module controls the data signal input source drive and the real-time detection compensation integrated module, and is latched in the latch buffer unit;
  • Data signal output stage the gate drive signal is high potential, the data signal is high potential, the detection turn-on signal is low potential, the first switch is grounded, the second operational amplifier output terminal outputs a data signal, and the switching thin film transistor is turned on and driven The thin film transistor is turned on;
  • the driving thin film transistor source target voltage acquiring unit is based on a signal for driving the source transistor target voltage and the data signal of the thin film transistor Number relationship f (data) to calculate the source target voltage of the driving thin film transistor;
  • Driving the thin film transistor threshold voltage deviation real-time detection phase detecting the turn-on signal is set to a high potential, detecting the thin film transistor is turned on, the positive and negative input terminals of the first operational amplifier are respectively connected to the driving thin film transistor source target voltage and the driving thin film transistor source The actual voltage, the output of the output terminal drives the difference between the source target voltage of the thin film transistor and the actual voltage;
  • the first switch is connected to the output end of the first operational amplifier, the positive input end of the second operational amplifier is connected to the data signal, the negative input terminal is connected to the output end of the first operational amplifier, and the output is output The sum of the data signal voltage and the voltage at the output of the first operational amplifier;
  • Display phase the gate drive signal and the detection enable signal are turned to a low potential, the switching thin film transistor and the detection thin film transistor are turned off, and the organic light emitting diode emits light.
  • the present invention provides an AMOLED real-time compensation system, which is provided with a source driving and real-time detection compensation integration module, in which a first operational amplifier and a second operational amplifier are disposed, the first operational amplifier
  • the positive and negative input terminals are respectively connected to the source voltage of the driving thin film transistor and the actual voltage of the source of the driving thin film transistor, and the output terminal outputs the difference between the source target voltage of the driving thin film transistor and the actual voltage, and the threshold voltage deviation of the driving thin film transistor is performed.
  • the second operational amplifier accumulates the difference between the source target voltage of the driving thin film transistor and the actual voltage outputted from the output of the first operational amplifier to the data signal voltage, to compensate the threshold voltage deviation of the driving thin film transistor in real time, Real-time measurement, real-time compensation for each pixel unit is realized, and data signals of all gray levels can be effectively compensated.
  • FIG. 1 is an architectural diagram of a conventional AMOLED compensation system
  • FIG. 2 is a circuit diagram of a pixel unit of FIG. 1;
  • FIG. 3 is a structural diagram of an AMOLED real-time compensation system of the present invention.
  • FIG. 4 is a circuit diagram of the source driving and real-time detection compensation integrated module and the pixel unit of FIG. 3;
  • FIG. 5 is a real-time detection system of the AMOLED real-time compensation system of the present invention in the data signal output stage, the real-time detection phase of the threshold voltage deviation of the driving thin film transistor, and the threshold voltage deviation of the driving thin film transistor in real time. Timing diagram for the compensation phase and the display phase.
  • the present invention provides an AMOLED real-time compensation system, including: a plurality of pixel units 1 arranged in a matrix, and a data line 11 and a detection line 12 electrically connected to each column of pixel units 1
  • the compensation integration module 2, the gate drive module 3, and the control module 5 for detecting the open module 4.
  • the gate driving module 3 is configured to supply a gate driving signal WR to each row of pixel units 1.
  • the detection on module 4 is configured to provide a detection enable signal RD to each column of pixel units 1.
  • the pixel unit 1 includes a switching thin film transistor T1, a driving thin film transistor T2, a detecting thin film transistor T3, an organic light emitting diode D, and a storage capacitor C.
  • the gate of the switching thin film transistor T1 is connected to the gate driving signal WR, and the source is electrically connected to the output end of the second operational amplifier Y2 through the data line 11; the gate of the driving thin film transistor T2 and the switching thin film transistor T1
  • the drain is electrically connected, the drain is connected to the constant voltage high potential Vdd, the source is connected to the node A; the gate of the detecting thin film transistor T3 is connected to the detection enable signal RD, the source is connected to the node A, and the drain is electrically connected to the detection line 12.
  • the anode of the organic light emitting diode D is electrically connected to the node A, and the cathode is grounded; one end of the storage capacitor C is electrically connected to the gate of the driving thin film transistor T2, and the other end is electrically connected. Sexually connected to node A.
  • the source driving and real-time detection compensation integration module 2 includes a latch buffer unit 21, a driving thin film transistor source target voltage acquiring unit 22, a first operational amplifier Y1, and a second operational amplifier Y2.
  • the latch buffer unit 21 is configured to receive, latch, buffer, and output the data signal data.
  • the driving thin film transistor source target voltage acquiring unit 22 is electrically connected to the latch buffer unit 21 for calculating the source of the driving thin film transistor according to the functional relationship f(data) of the driving thin film transistor source target voltage and the data signal data.
  • the target voltage i.e., the target voltage of node A, f(data) can be selected by those skilled in the art in the corresponding known functions.
  • the first operational amplifier Y1 is electrically connected to the driving thin film transistor source target voltage acquiring unit 22 and the pixel unit 1, and the positive and negative input terminals respectively input the source voltage of the driving thin film transistor and the actual voltage of the driving thin film transistor source.
  • Output output drive thin film transistor source The difference ⁇ V between the standard voltage and the actual voltage, that is, the difference ⁇ V between the target voltage of the node A and the actual voltage, detects the threshold voltage deviation of the driving thin film transistor T2 in real time.
  • the second operational amplifier Y2 is electrically connected to the latch buffer unit 21 and the pixel unit 1, and the positive input terminal is connected to the data signal data, and the negative input terminal is grounded first through the first switch S1 and then connected to the output end of the first operational amplifier Y1.
  • the output terminal first outputs the data signal data voltage, and then outputs the data signal data voltage plus the sum of the difference ⁇ V between the source target voltage of the driving thin film transistor and the actual voltage outputted by the first operational amplifier Y1 to threshold the driving thin film transistor T2.
  • the voltage deviation is compensated in real time.
  • the data signal data is input to the gate of the driving thin film transistor T2. If the actual threshold voltage of the driving thin film transistor T2 is different from the ideal threshold voltage by 0.1V, it is reflected to the source target voltage of the driving thin film transistor T2 and the driving film.
  • the difference ⁇ V of the source actual voltage of the transistor T2 is also 0.1 V, that is, the difference ⁇ V between the target voltage of the node A and the actual voltage is also 0.1V.
  • the output of the first operational amplifier outputs the voltage difference of 0.1V, and then the second operational amplifier adds the voltage difference of 0.1V to the data signal data voltage, and drives the source voltage of the thin film transistor T2, that is, the voltage of the node A.
  • a corresponding increase of about 0.1 V compensates for the threshold voltage deviation of the driving thin film transistor T2.
  • the threshold voltage thereof is relatively stable, and the AMOLED real-time compensation system can achieve the operation of each pixel unit without compensating for the threshold voltage deviation of the organic light emitting diode.
  • the control module 5 controls the data signal input source drive and real-time detection compensation integration module 2, and is latched in the latch buffer unit 21.
  • Data signal output stage the gate drive signal WR is high, the data signal data is high, the detection enable signal RD is low, the first switch S1 is grounded under the control of the low potential, and the output of the second operational amplifier Y2
  • the data signal data is output, the switching thin film transistor T1 is turned on, and the driving thin film transistor T2 is turned on;
  • the driving thin film transistor source target voltage acquiring unit 22 is based on a function relationship between the driving target voltage of the thin film transistor and the data signal data f(data) To calculate the source target voltage of the driving thin film transistor.
  • Driving the thin film transistor threshold voltage deviation real-time detection phase detecting the turn-on signal RD is set to a high potential, detecting the thin film transistor T3 is turned on, the positive and negative input terminals of the first operational amplifier Y1 are respectively
  • the source target voltage of the driving thin film transistor is connected to the actual voltage of the source of the driving thin film transistor, and the output terminal outputs a difference ⁇ V between the source target voltage of the driving thin film transistor and the actual voltage.
  • the first switch S1 is connected to the output end of the first operational amplifier Y1 under the control of the high potential, the positive input terminal of the second operational amplifier Y2 is connected to the data signal data, and the negative input terminal is connected An output terminal of the operational amplifier Y1 outputs an output voltage data voltage summed with a voltage of an output terminal of the first operational amplifier Y1.
  • the gate driving signal WR and the detection on signal RD are turned to a low potential, the switching thin film transistor T1 and the detecting thin film transistor T3 are turned off, and the organic light emitting diode D is illuminated.
  • the AMOLED real-time compensation system of the present invention is further provided with a memory module 6 electrically connected to the control module 5, where the source is driven and A current detecting unit 23 electrically connected to the control module 5 is further disposed in the real-time detection and compensation integration module 2 .
  • the current detecting unit 23 is turned on or off with the detecting line 12 through the second switch S2.
  • the control module 5 calculates a threshold voltage deviation of the organic light emitting diode D according to the current value measured by the current detecting unit 23, and the storage module 6 is configured to store the threshold voltage deviation of the machine light emitting diode D.
  • the working process of the AMOLED real-time compensation system needs to increase the threshold voltage deviation detection phase of the organic light-emitting diode before the data signal input stage: the gate drive signal WR is high, the data signal data is low, and the detection turn-on signal RD
  • the first switch S1 is grounded, the second switch S2 is closed, the driving thin film transistor T2 is turned off, the detecting thin film transistor T3 is turned on, and the current detecting unit 23 is turned on with the detecting line 12 through the second switch S2, current
  • the detecting unit 23 discharges the organic light emitting diode D through the detecting line 12, and the current detecting unit 23 transmits the measured current value to the control module 5, and the control module 5 calculates the threshold voltage of the organic light emitting diode D.
  • the offset value is present in the memory module 6.
  • control module 5 first compensates the threshold voltage deviation of the organic light emitting diode D to the data signal, and then inputs the compensated data signal into the source driving and real-time detection compensation integration module 2.
  • the data signal output phase, the real-time detection phase of the threshold voltage deviation of the driving thin film transistor, the real-time compensation phase of the threshold voltage deviation of the driving thin film transistor, and the display phase are sequentially performed, and the description thereof will not be repeated here.
  • the AMOLED real-time compensation system provided by the present invention is provided with a source driving and real-time detection and compensation integration module, wherein a first operational amplifier and a second operational amplifier are disposed, and the first operational amplifier is positive and negative.
  • the input end is respectively connected to the source voltage of the driving thin film transistor and the actual voltage of the source of the driving thin film transistor, and the difference between the source target voltage of the driving thin film transistor and the actual voltage is outputted at the output end, and the threshold voltage deviation of the driving thin film transistor is detected in real time.
  • the second operational amplifier accumulates the difference between the source target voltage of the driving thin film transistor outputted from the output terminal of the first operational amplifier and the actual voltage to the data signal voltage, so as to compensate the threshold voltage deviation of the driving thin film transistor in real time, thereby realizing
  • Each pixel unit performs real-time measurement, real-time compensation, and can effectively compensate all gray-scale data signals.

Abstract

一种AMOLED实时补偿系统，设置有源极驱动与实时检测补偿集成模块(2)，其内设置第一、第二运算放大器（Y1，Y2），所述第一运算放大器(Y1)的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值(ΔV)，对驱动薄膜晶体管(T2)的阈值电压偏差进行实时检测，然后第二运算放大器(Y2)将第一运算放大器(Y1)输出端输出的驱动薄膜晶体管源极目标电压与实际电压的差值(ΔV)累加到数据信号(data)电压上，对驱动薄膜晶体管(T2)的阈值电压偏差进行实时补偿，实现了对每个像素单元进行实时量测、实时补偿，并且能够对所有灰阶的数据信号(data)进行有效补偿。

Description

AMOLED实时补偿系统 技术领域
本发明涉及显示技术领域，尤其涉及一种AMOLED实时补偿系统。
背景技术
有机发光二极管(Organic Light Emitting Display，OLED)显示装置具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽，可实现柔性显示与大面积全彩显示等诸多优点，被业界公认为是最有发展潜力的显示装置。
OLED显示装置按照驱动方式可以分为无源矩阵型OLED(Passive Matrix OLED，PMOLED)和有源矩阵型OLED(Active Matrix OLED，AMOLED)两大类，即直接寻址和薄膜晶体管(Thin Film Transistor，TFT)矩阵寻址两类。其中，AMOLED具有呈阵列式排布的像素，属于主动显示类型，发光效能高，通常用作高清晰度的大尺寸显示装置。由于驱动有机发光二极管的薄膜晶体管及有机发光二极管自身均存在阈值电压偏差，因此AMOLED显示装置通常需要设置补偿系统来进行补偿。
图1所示为现有的AMOLED补偿系统的结构示意图，包括呈矩阵式排列的多个像素单元10，电性连接每一素单元10的源极驱动模块20、电性连接每一像素单元10的栅极驱动模块30、电性连接每一像素单元10的检测开启模块40、电性连接每一像素单元10的检测模块50、电性连接源极驱动模块20、栅极驱动模块30、检测开启模块40、与检测模块50的控制模块60、以及电性连接控制模块60的存储模块70。图2所示为图1中一个像素单元10的电路图，所述像素单元10包括第一TFT T10，第二TFT T20，第三TFT T30，电容C10，及有机发光二极管D10。所述第一TFT T10的栅极接入栅极驱动模块30提供的栅极驱动信号WR，源极接入源极驱动模块20提供的数据信号data；所述第二TFT T20的栅极与第一TFT T10的漏极电性连接，漏极连接恒压高电位Vdd，源极连接节点A10；所述第三TFT T30的栅极接入检测开启模块40提供的检测开启信号RD，源极连接节点A10，漏极通过一走线L连接到检测模块50；有机发光二极管D10的阳极连接节点A10，阴极接地；所述电容C10的一端电性连接第二TFT T20的栅极，另一端电性连接节点A10。
请同时参阅图1和图2，该现有的AMOLED补偿系统的工作过程包括 TFT检测、有机发光二极管检测、以及显示阶段。TFT检测过程为：通过栅极驱动模块30将栅极驱动信号WR拉高第一TFT T10导通，源极驱动模块20输出高电位的数据信号data给第二TFT T20，第二TFT T20导通；检测开启模块40将检测开启信号RD置高，第三TFT T30导通，电流通过走线L流入检测模块50；所述检测模块50将量测到的电流值传给控制模块60；控制模块60计算出第二TFT T20的阀值电压偏差值，并存在存储模块70中。有机发光二极管检测过程为：通过栅极驱动模块30将栅极驱动信号WR拉高，第一TFT T10导通，源极驱动模块20输出低电位的数据信号data给第二TFT T20，第二TFT T20截止；检测开启模块40将检测开启信号RD置高，第三TFT T30导通，检测模块50通过走线L对有机发光二极管D10放电；检测模块50将此时量测到的电流值传给控制模块60；控制模块60计算出有机发光二极管D10的阀值电压偏差值，并存在存储模块70中。显示阶段时，数据信号data输入进控制模块60，所述控制模块60会根据存储模块70中存放的TFT T20的阀值电压偏差值和有机发光二极管D10的阀值电压偏差值对数据信号data进行补偿，然后再显示到AMOLED面板上。
上述现有的AMOLED补偿系统，补偿后的数据信号data经过源极驱动模块20输出，不能对0与255灰阶的数据信号进行有效补偿，并且无法对每个像素单元进行实时量测、实时补偿。
发明内容
本发明的目的在于提供一种AMOLED实时补偿系统，能够对所有灰阶的数据信号进行有效补偿，还能够对每个像素单元进行实时量测、实时补偿。
为实现上述目的，本发明提供一种AMOLED实时补偿系统，包括：呈矩阵式排列的多个像素单元、通过数据线、与检测线电性连接每一列像素单元的源极驱动与实时检测补偿集成模块、电性连接每一行像素单元的栅极驱动模块、电性连接每一列像素单元的检测开启模块、及电性连接源极驱动与实时检测补偿集成模块、栅极驱动模块、与检测开启模块的控制模块；
所述像素单元包括开关薄膜晶体管、驱动薄膜晶体管、检测薄膜晶体管、及有机发光二极管；
所述栅极驱动模块用于向每一行像素单元提供栅极驱动信号；
所述检测开启模块用于向每一列像素单元提供检测开启信号；
所述源极驱动与实时检测补偿集成模块包括锁存缓冲单元、驱动薄膜 晶体管源极目标电压获取单元、第一运算放大器、及第二运算放大器；所述锁存缓冲单元用于接收、锁存、缓冲、与输出数据信号；所述驱动薄膜晶体管源极目标电压获取单元电性连接锁存缓冲单元，用于根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；所述第一运算放大器电性连接驱动薄膜晶体管源极目标电压获取单元与像素单元，其正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值，对驱动薄膜晶体管的阈值电压偏差进行实时检测；所述第二运算放大器电性连接锁存缓冲单元与像素单元，其正输入端接入数据信号，负输入端通过第一开关先接地再接第一运算放大器的输出端，输出端先输出数据信号电压，再输出数据信号电压与第一运算放大器输出端电压的加和，以对驱动薄膜晶体管的阈值电压偏差进行实时补偿。
所述开关薄膜晶体管的栅极接入栅极驱动信号，源极通过数据线电性连接第二运算放大器的输出端；所述驱动薄膜晶体管的栅极与开关薄膜晶体管的漏极电性连接，漏极连接恒压高电位，源极连接节点；所述检测薄膜晶体管的栅极接入检测开启信号，源极连接节点，漏极通过检测线电性连接第一运算放大器的负输入端；所述有机发光二极管的阳极电性连接节点，阴极接地。
所述像素单元还包括一存储电容，所述存储电容的一端电性连接驱动薄膜晶体管的栅极，另一端电性连接节点。
所述源极驱动与实时检测补偿集成模块还包括电性连接于所述控制模块的电流检测单元，所述电流检测单元通过第二开关与所述检测线导通或断开。
所述AMOLED实时补偿系统还包括电性连接控制模块的存储模块，所述控制模块根据电流检测单元量测到的电流值来计算有机发光二极管的阈值电压偏差，所述存储模块用于存放所述机发光二极管的阈值电压偏差。
该AMOLED实时补偿系统的工作过程按先后顺序分为五个阶段：
数据信号输入阶段：控制模块控制数据信号输入源极驱动与实时检测补偿集成模块，锁存于锁存缓冲单元；
数据信号输出阶段：所述栅极驱动信号为高电位，数据信号为高电位，检测开启信号为低电位，第一开关接地，第二运算放大器输出端输出数据信号，开关薄膜晶体管导通，驱动薄膜晶体管导通；所述驱动薄膜晶体管源极目标电压获取单元根据驱动薄膜晶体管源极目标电压与数据信号的函 数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；
驱动薄膜晶体管阈值电压偏差实时检测阶段：检测开启信号置为高电位，检测薄膜晶体管导通，第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值；
驱动薄膜晶体管阈值电压偏差实时补偿阶段：第一开关接第一运算放大器的输出端，第二运算放大器的正输入端接入数据信号，负输入端接第一运算放大器的输出端，输出端输出数据信号电压与第一运算放大器输出端电压的加和；
显示阶段：栅极驱动信号与检测开启信号转变为低电位，开关薄膜晶体管与检测薄膜晶体管截止，有机发光二极管发光显示。
该AMOLED实时补偿系统的工作过程还包括设于数据信号输入阶段之前的有机发光二极管阈值电压偏差检测阶段：所述栅极驱动信号为高电位，数据信号为低电位，检测开启信号为高电位，第一开关接地，第二开关闭合，驱动薄膜晶体管截止，检测薄膜晶体管导通，所述电流检测单元通过第二开关与所述检测线导通，电流检测单元通过检测线对有机发光二级管放电，电流检测单元将量测到的电流值传给所述控制模块，所述控制模块计算出有机发光二极管的阀值电压偏差值，并存在存储模块中；
在接下来的数据信号输入阶段：控制模块先将有机发光二极管的阀值电压偏差补偿给数据信号，再将补偿后的数据信号输入源极驱动与实时检测补偿集成模块。
所述第一开关在低电位的控制下接地，在高电位的控制下接第一运算放大器的输出端。
本发明还提供一种AMOLED实时补偿系统，包括：呈矩阵式排列的多个像素单元、通过数据线、与检测线电性连接每一列像素单元的源极驱动与实时检测补偿集成模块、电性连接每一行像素单元的栅极驱动模块、电性连接每一列像素单元的检测开启模块、及电性连接源极驱动与实时检测补偿集成模块、栅极驱动模块、与检测开启模块的控制模块；
所述像素单元包括开关薄膜晶体管、驱动薄膜晶体管、检测薄膜晶体管、及有机发光二极管；
所述栅极驱动模块用于向每一行像素单元提供栅极驱动信号；
所述检测开启模块用于向每一列像素单元提供检测开启信号；
所述源极驱动与实时检测补偿集成模块包括锁存缓冲单元、驱动薄膜晶体管源极目标电压获取单元、第一运算放大器、及第二运算放大器；所 述锁存缓冲单元用于接收、锁存、缓冲、与输出数据信号；所述驱动薄膜晶体管源极目标电压获取单元电性连接锁存缓冲单元，用于根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；所述第一运算放大器电性连接驱动薄膜晶体管源极目标电压获取单元与像素单元，其正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值，对驱动薄膜晶体管的阈值电压偏差进行实时检测；所述第二运算放大器电性连接锁存缓冲单元与像素单元，其正输入端接入数据信号，负输入端通过第一开关先接地再接第一运算放大器的输出端，输出端先输出数据信号电压，再输出数据信号电压与第一运算放大器输出端电压的加和，以对驱动薄膜晶体管的阈值电压偏差进行实时补偿；
其中，所述开关薄膜晶体管的栅极接入栅极驱动信号，源极通过数据线电性连接第二运算放大器的输出端；所述驱动薄膜晶体管的栅极与开关薄膜晶体管的漏极电性连接，漏极连接恒压高电位，源极连接节点；所述检测薄膜晶体管的栅极接入检测开启信号，源极连接节点，漏极通过检测线电性连接第一运算放大器的负输入端；所述有机发光二极管的阳极电性连接节点，阴极接地；
其中，所述像素单元还包括一存储电容，所述存储电容的一端电性连接驱动薄膜晶体管的栅极，另一端电性连接节点；
其中，所述源极驱动与实时检测补偿集成模块还包括电性连接于所述控制模块的电流检测单元，所述电流检测单元通过第二开关与所述检测线导通或断开；
还包括电性连接控制模块的存储模块，所述控制模块根据电流检测单元量测到的电流值来计算有机发光二极管的阈值电压偏差，所述存储模块用于存放所述机发光二极管的阈值电压偏差；
其中，该AMOLED实时补偿系统的工作过程按先后顺序分为五个阶段：
数据信号输入阶段：控制模块控制数据信号输入源极驱动与实时检测补偿集成模块，锁存于锁存缓冲单元；
数据信号输出阶段：所述栅极驱动信号为高电位，数据信号为高电位，检测开启信号为低电位，第一开关接地，第二运算放大器输出端输出数据信号，开关薄膜晶体管导通，驱动薄膜晶体管导通；所述驱动薄膜晶体管源极目标电压获取单元根据驱动薄膜晶体管源极目标电压与数据信号的函 数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；
驱动薄膜晶体管阈值电压偏差实时检测阶段：检测开启信号置为高电位，检测薄膜晶体管导通，第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值；
驱动薄膜晶体管阈值电压偏差实时补偿阶段：第一开关接第一运算放大器的输出端，第二运算放大器的正输入端接入数据信号，负输入端接第一运算放大器的输出端，输出端输出数据信号电压与第一运算放大器输出端电压的加和；
显示阶段：栅极驱动信号与检测开启信号转变为低电位，开关薄膜晶体管与检测薄膜晶体管截止，有机发光二极管发光显示。
本发明的有益效果：本发明供的一种AMOLED实时补偿系统，设置有源极驱动与实时检测补偿集成模块，其内设置第一运算放大器、及第二运算放大器，所述第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值，对驱动薄膜晶体管的阈值电压偏差进行实时检测，然后第二运算放大器将第一运算放大器输出端输出的驱动薄膜晶体管源极目标电压与实际电压的差值累加到数据信号电压上，以对驱动薄膜晶体管的阈值电压偏差进行实时补偿，实现了对每个像素单元进行实时量测、实时补偿，并且能够对所有灰阶的数据信号进行有效补偿。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为现有的AMOLED补偿系统的架构图；
图2为图1中一个像素单元的电路图；
图3为本发明的AMOLED实时补偿系统的架构图；
图4为图3中源极驱动与实时检测补偿集成模块及像素单元的电路图；
图5为本发明的AMOLED实时补偿系统在数据信号输出阶段、驱动薄膜晶体管阈值电压偏差实时检测阶段、驱动薄膜晶体管阈值电压偏差实时 补偿阶段、及显示阶段的时序图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请同时参阅图3与图4，本发明提供一种AMOLED实时补偿系统，包括：呈矩阵式排列的多个像素单元1、通过数据线11、与检测线12电性连接每一列像素单元1的源极驱动与实时检测补偿集成模块2、电性连接每一行像素单元1的栅极驱动模块3、电性连接每一列像素单元1的检测开启模块4、及电性连接源极驱动与实时检测补偿集成模块2、栅极驱动模块3、与检测开启模块4的控制模块5。
具体地，所述栅极驱动模块3用于向每一行像素单元1提供栅极驱动信号WR。
所述检测开启模块4用于向每一列像素单元1提供检测开启信号RD。
所述像素单元1包括开关薄膜晶体管T1、驱动薄膜晶体管T2、检测薄膜晶体管T3、有机发光二极管D、及存储电容C。所述开关薄膜晶体管T1的栅极接入栅极驱动信号WR，源极通过数据线11电性连接第二运算放大器Y2的输出端；所述驱动薄膜晶体管T2的栅极与开关薄膜晶体管T1的漏极电性连接，漏极连接恒压高电位Vdd，源极连接节点A；所述检测薄膜晶体管T3的栅极接入检测开启信号RD，源极连接节点A，漏极通过检测线12电性连接第一运算放大器Y1的负输入端；所述有机发光二极管D的阳极电性连接节点A，阴极接地；所述存储电容C的一端电性连接驱动薄膜晶体管T2的栅极，另一端电性连接节点A。
重点地，所述源极驱动与实时检测补偿集成模块2包括锁存缓冲单元21、驱动薄膜晶体管源极目标电压获取单元22、第一运算放大器Y1、及第二运算放大器Y2。
所述锁存缓冲单元21用于接收、锁存、缓冲、与输出数据信号data。
所述驱动薄膜晶体管源极目标电压获取单元22电性连接锁存缓冲单元21，用于根据驱动薄膜晶体管源极目标电压与数据信号data的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压，即节点A的目标电压，f(data)可由本领域的技术人员在相应的已知函数中选取。
所述第一运算放大器Y1电性连接驱动薄膜晶体管源极目标电压获取单元22与像素单元1，其正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目 标电压与实际电压的差值ΔV，即节点A的目标电压与实际电压的差值ΔV，对驱动薄膜晶体管T2的阈值电压偏差进行实时检测。
所述第二运算放大器Y2电性连接锁存缓冲单元21与像素单元1，其正输入端接入数据信号data，负输入端通过第一开关S1先接地再接第一运算放大器Y1的输出端，输出端先输出数据信号data电压，再输出数据信号data电压加上第一运算放大器Y1输出的驱动薄膜晶体管源极目标电压与实际电压的差值ΔV的和，以对驱动薄膜晶体管T2的阈值电压偏差进行实时补偿。
举例说明如下，数据信号data输入到驱动薄膜晶体管T2的栅极，若驱动薄膜晶体管T2的实际阈值电压比理想的阈值电压相差0.1V，那么反映到驱动薄膜晶体管T2的源极目标电压与驱动薄膜晶体管T2的源极实际电压的差值ΔV也为0.1V，即节点A的目标电压与实际电压的差值ΔV也为0.1V。第一运算放大器的输出端输出该0.1V的电压差值，然后第二运算放大器将该0.1V的电压差值累加到数据信号data电压上，驱动薄膜晶体管T2的源极电压即节点A的电压相应提高约0.1V，补偿了驱动薄膜晶体管T2的阈值电压偏差。
考虑到有机发光二极管D经过一段时间的使用、老化后，其阈值电压会比较稳定，在不需要补偿有机发光二极管阈值电压偏差的情况下，上述AMOLED实时补偿系统已经能够达到对每个像素单元进行实时量测、实时补偿的效果，并且由于节点A的电压值与数据信号data也具有函数关系，不论数据信号data的灰阶值是多少，均有对应的A点电压，即该AMOLED实时补偿系统能够对所有灰阶的数据信号进行有效补偿。
进一步地，结合图3、图4、与图5，该AMOLED实时补偿系统的工作过程按先后顺序分为五个阶段：
数据信号输入阶段：控制模块5控制数据信号输入源极驱动与实时检测补偿集成模块2，锁存于锁存缓冲单元21。
数据信号输出阶段：所述栅极驱动信号WR为高电位，数据信号data为高电位，检测开启信号RD为低电位，第一开关S1在低电位的控制下接地，第二运算放大器Y2输出端输出数据信号data，开关薄膜晶体管T1导通，驱动薄膜晶体管T2导通；所述驱动薄膜晶体管源极目标电压获取单元22根据驱动薄膜晶体管源极目标电压与数据信号data的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压。
驱动薄膜晶体管阈值电压偏差实时检测阶段：检测开启信号RD置为高电位，检测薄膜晶体管T3导通，第一运算放大器Y1的正、负输入端分别 接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值ΔV。
驱动薄膜晶体管阈值电压偏差实时补偿阶段：第一开关S1在高电位的控制下接第一运算放大器Y1的输出端，第二运算放大器Y2的正输入端接入数据信号data，负输入端接第一运算放大器Y1的输出端，输出端输出数据信号data电压与第一运算放大器Y1输出端电压的加和。
显示阶段：栅极驱动信号WR与检测开启信号RD转变为低电位，开关薄膜晶体管T1与检测薄膜晶体管T3截止，有机发光二极管D发光显示。
对于使用时间较短的AMOLED显示装置，有必要补偿有机发光二极管的阈值电压偏差，因此本发明的AMOLED实时补偿系统还设有电性连接控制模块5的存储模块6，在所述源极驱动与实时检测补偿集成模块2内还设置电性连接于所述控制模块5的电流检测单元23。所述电流检测单元23通过第二开关S2与所述检测线12导通或断开。所述控制模块5根据电流检测单元23量测到的电流值来计算有机发光二极管D的阈值电压偏差，所述存储模块6用于存放所述机发光二极管D的阈值电压偏差。
相应地，该AMOLED实时补偿系统的工作过程需要在数据信号输入阶段之前增加有机发光二极管阈值电压偏差检测阶段：所述栅极驱动信号WR为高电位，数据信号data为低电位，检测开启信号RD为高电位，第一开关S1接地，第二开关S2闭合，驱动薄膜晶体管T2截止，检测薄膜晶体管T3导通，所述电流检测单元23通过第二开关S2与所述检测线12导通，电流检测单元23通过检测线12对有机发光二级管D放电，电流检测单元23将量测到的电流值传给所述控制模块5，所述控制模块5计算出有机发光二极管D的阀值电压偏差值，并存在存储模块6中。
在接下来的数据信号输入阶段：控制模块5先将有机发光二极管D的阀值电压偏差补偿给数据信号，再将补偿后的数据信号输入源极驱动与实时检测补偿集成模块2。
此后的数据信号输出阶段、驱动薄膜晶体管阈值电压偏差实时检测阶段、驱动薄膜晶体管阈值电压偏差实时补偿阶段、及显示阶段均按序进行，此处不再重复描述。
综上所述，本发明供的AMOLED实时补偿系统，设置有源极驱动与实时检测补偿集成模块，其内设置第一运算放大器、及第二运算放大器，所述第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值，对驱动薄膜晶体管的阈值电压偏差进行实时检测， 然后第二运算放大器将第一运算放大器输出端输出的驱动薄膜晶体管源极目标电压与实际电压的差值累加到数据信号电压上，以对驱动薄膜晶体管的阈值电压偏差进行实时补偿，实现了对每个像素单元进行实时量测、实时补偿，并且能够对所有灰阶的数据信号进行有效补偿。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (14)

  1. 一种AMOLED实时补偿系统，包括：呈矩阵式排列的多个像素单元、通过数据线、与检测线电性连接每一列像素单元的源极驱动与实时检测补偿集成模块、电性连接每一行像素单元的栅极驱动模块、电性连接每一列像素单元的检测开启模块、及电性连接源极驱动与实时检测补偿集成模块、栅极驱动模块、与检测开启模块的控制模块；
    所述像素单元包括开关薄膜晶体管、驱动薄膜晶体管、检测薄膜晶体管、及有机发光二极管；
    所述栅极驱动模块用于向每一行像素单元提供栅极驱动信号；
    所述检测开启模块用于向每一列像素单元提供检测开启信号；
    所述源极驱动与实时检测补偿集成模块包括锁存缓冲单元、驱动薄膜晶体管源极目标电压获取单元、第一运算放大器、及第二运算放大器；所述锁存缓冲单元用于接收、锁存、缓冲、与输出数据信号；所述驱动薄膜晶体管源极目标电压获取单元电性连接锁存缓冲单元，用于根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；所述第一运算放大器电性连接驱动薄膜晶体管源极目标电压获取单元与像素单元，其正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值，对驱动薄膜晶体管的阈值电压偏差进行实时检测；所述第二运算放大器电性连接锁存缓冲单元与像素单元，其正输入端接入数据信号，负输入端通过第一开关先接地再接第一运算放大器的输出端，输出端先输出数据信号电压，再输出数据信号电压与第一运算放大器输出端电压的加和，以对驱动薄膜晶体管的阈值电压偏差进行实时补偿。
  2. 如权利要求1所述的AMOLED实时补偿系统，其中，所述开关薄膜晶体管的栅极接入栅极驱动信号，源极通过数据线电性连接第二运算放大器的输出端；所述驱动薄膜晶体管的栅极与开关薄膜晶体管的漏极电性连接，漏极连接恒压高电位，源极连接节点；所述检测薄膜晶体管的栅极接入检测开启信号，源极连接节点，漏极通过检测线电性连接第一运算放大器的负输入端；所述有机发光二极管的阳极电性连接节点，阴极接地。
  3. 如权利要求2所述的AMOLED实时补偿系统，其中，所述像素单元还包括一存储电容，所述存储电容的一端电性连接驱动薄膜晶体管的栅 极，另一端电性连接节点。
  4. 如权利要求2所述的AMOLED实时补偿系统，其中，所述源极驱动与实时检测补偿集成模块还包括电性连接于所述控制模块的电流检测单元，所述电流检测单元通过第二开关与所述检测线导通或断开。
  5. 如权利要求4所述的AMOLED实时补偿系统，还包括电性连接控制模块的存储模块，所述控制模块根据电流检测单元量测到的电流值来计算有机发光二极管的阈值电压偏差，所述存储模块用于存放所述机发光二极管的阈值电压偏差。
  6. 如权利要求2所述的AMOLED实时补偿系统，其中，该AMOLED实时补偿系统的工作过程按先后顺序分为五个阶段：
    数据信号输入阶段：控制模块控制数据信号输入源极驱动与实时检测补偿集成模块，锁存于锁存缓冲单元；
    数据信号输出阶段：所述栅极驱动信号为高电位，数据信号为高电位，检测开启信号为低电位，第一开关接地，第二运算放大器输出端输出数据信号，开关薄膜晶体管导通，驱动薄膜晶体管导通；所述驱动薄膜晶体管源极目标电压获取单元根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；
    驱动薄膜晶体管阈值电压偏差实时检测阶段：检测开启信号置为高电位，检测薄膜晶体管导通，第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值；
    驱动薄膜晶体管阈值电压偏差实时补偿阶段：第一开关接第一运算放大器的输出端，第二运算放大器的正输入端接入数据信号，负输入端接第一运算放大器的输出端，输出端输出数据信号电压与第一运算放大器输出端电压的加和；
    显示阶段：栅极驱动信号与检测开启信号转变为低电位，开关薄膜晶体管与检测薄膜晶体管截止，有机发光二极管发光显示。
  7. 如权利要求5所述的AMOLED实时补偿系统，其中，该AMOLED实时补偿系统的工作过程按先后顺序分为五个阶段：
    数据信号输入阶段：控制模块控制数据信号输入源极驱动与实时检测补偿集成模块，锁存于锁存缓冲单元；
    数据信号输出阶段：所述栅极驱动信号为高电位，数据信号为高电位，检测开启信号为低电位，第一开关接地，第二运算放大器输出端输出数据信号，开关薄膜晶体管导通，驱动薄膜晶体管导通；所述驱动薄膜晶体管 源极目标电压获取单元根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；
    驱动薄膜晶体管阈值电压偏差实时检测阶段：检测开启信号置为高电位，检测薄膜晶体管导通，第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值；
    驱动薄膜晶体管阈值电压偏差实时补偿阶段：第一开关接第一运算放大器的输出端，第二运算放大器的正输入端接入数据信号，负输入端接第一运算放大器的输出端，输出端输出数据信号电压与第一运算放大器输出端电压的加和；
    显示阶段：栅极驱动信号与检测开启信号转变为低电位，开关薄膜晶体管与检测薄膜晶体管截止，有机发光二极管发光显示。
  8. 如权利要求6所述的AMOLED实时补偿系统，其中，该AMOLED实时补偿系统的工作过程还包括设于数据信号输入阶段之前的有机发光二极管阈值电压偏差检测阶段：所述栅极驱动信号为高电位，数据信号为低电位，检测开启信号为高电位，第一开关接地，第二开关闭合，驱动薄膜晶体管截止，检测薄膜晶体管导通，所述电流检测单元通过第二开关与所述检测线导通，电流检测单元通过检测线对有机发光二级管放电，电流检测单元将量测到的电流值传给所述控制模块，所述控制模块计算出有机发光二极管的阀值电压偏差值，并存在存储模块中；
    在接下来的数据信号输入阶段：控制模块先将有机发光二极管的阀值电压偏差补偿给数据信号，再将补偿后的数据信号输入源极驱动与实时检测补偿集成模块。
  9. 如权利要求7所述的AMOLED实时补偿系统，其中，该AMOLED实时补偿系统的工作过程还包括设于数据信号输入阶段之前的有机发光二极管阈值电压偏差检测阶段：所述栅极驱动信号为高电位，数据信号为低电位，检测开启信号为高电位，第一开关接地，第二开关闭合，驱动薄膜晶体管截止，检测薄膜晶体管导通，所述电流检测单元通过第二开关与所述检测线导通，电流检测单元通过检测线对有机发光二级管放电，电流检测单元将量测到的电流值传给所述控制模块，所述控制模块计算出有机发光二极管的阀值电压偏差值，并存在存储模块中；
    在接下来的数据信号输入阶段：控制模块先将有机发光二极管的阀值电压偏差补偿给数据信号，再将补偿后的数据信号输入源极驱动与实时检测补偿集成模块。
  10. 如权利要求6所述的AMOLED实时补偿系统，其中，所述第一开关在低电位的控制下接地，在高电位的控制下接第一运算放大器的输出端。
  11. 如权利要求7所述的AMOLED实时补偿系统，其中，所述第一开关在低电位的控制下接地，在高电位的控制下接第一运算放大器的输出端。
  12. 一种AMOLED实时补偿系统，包括：呈矩阵式排列的多个像素单元、通过数据线、与检测线电性连接每一列像素单元的源极驱动与实时检测补偿集成模块、电性连接每一行像素单元的栅极驱动模块、电性连接每一列像素单元的检测开启模块、及电性连接源极驱动与实时检测补偿集成模块、栅极驱动模块、与检测开启模块的控制模块；
    所述像素单元包括开关薄膜晶体管、驱动薄膜晶体管、检测薄膜晶体管、及有机发光二极管；
    所述栅极驱动模块用于向每一行像素单元提供栅极驱动信号；
    所述检测开启模块用于向每一列像素单元提供检测开启信号；
    所述源极驱动与实时检测补偿集成模块包括锁存缓冲单元、驱动薄膜晶体管源极目标电压获取单元、第一运算放大器、及第二运算放大器；所述锁存缓冲单元用于接收、锁存、缓冲、与输出数据信号；所述驱动薄膜晶体管源极目标电压获取单元电性连接锁存缓冲单元，用于根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；所述第一运算放大器电性连接驱动薄膜晶体管源极目标电压获取单元与像素单元，其正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值，对驱动薄膜晶体管的阈值电压偏差进行实时检测；所述第二运算放大器电性连接锁存缓冲单元与像素单元，其正输入端接入数据信号，负输入端通过第一开关先接地再接第一运算放大器的输出端，输出端先输出数据信号电压，再输出数据信号电压与第一运算放大器输出端电压的加和，以对驱动薄膜晶体管的阈值电压偏差进行实时补偿；
    其中，所述开关薄膜晶体管的栅极接入栅极驱动信号，源极通过数据线电性连接第二运算放大器的输出端；所述驱动薄膜晶体管的栅极与开关薄膜晶体管的漏极电性连接，漏极连接恒压高电位，源极连接节点；所述检测薄膜晶体管的栅极接入检测开启信号，源极连接节点，漏极通过检测线电性连接第一运算放大器的负输入端；所述有机发光二极管的阳极电性连接节点，阴极接地；
    其中，所述像素单元还包括一存储电容，所述存储电容的一端电性连 接驱动薄膜晶体管的栅极，另一端电性连接节点；
    其中，所述源极驱动与实时检测补偿集成模块还包括电性连接于所述控制模块的电流检测单元，所述电流检测单元通过第二开关与所述检测线导通或断开；
    还包括电性连接控制模块的存储模块，所述控制模块根据电流检测单元量测到的电流值来计算有机发光二极管的阈值电压偏差，所述存储模块用于存放所述机发光二极管的阈值电压偏差；
    其中，该AMOLED实时补偿系统的工作过程按先后顺序分为五个阶段：
    数据信号输入阶段：控制模块控制数据信号输入源极驱动与实时检测补偿集成模块，锁存于锁存缓冲单元；
    数据信号输出阶段：所述栅极驱动信号为高电位，数据信号为高电位，检测开启信号为低电位，第一开关接地，第二运算放大器输出端输出数据信号，开关薄膜晶体管导通，驱动薄膜晶体管导通；所述驱动薄膜晶体管源极目标电压获取单元根据驱动薄膜晶体管源极目标电压与数据信号的函数关系f(data)来计算获取驱动薄膜晶体管源极目标电压；
    驱动薄膜晶体管阈值电压偏差实时检测阶段：检测开启信号置为高电位，检测薄膜晶体管导通，第一运算放大器的正、负输入端分别接入驱动薄膜晶体管源极目标电压与驱动薄膜晶体管源极实际电压，输出端输出驱动薄膜晶体管源极目标电压与实际电压的差值；
    驱动薄膜晶体管阈值电压偏差实时补偿阶段：第一开关接第一运算放大器的输出端，第二运算放大器的正输入端接入数据信号，负输入端接第一运算放大器的输出端，输出端输出数据信号电压与第一运算放大器输出端电压的加和；
    显示阶段：栅极驱动信号与检测开启信号转变为低电位，开关薄膜晶体管与检测薄膜晶体管截止，有机发光二极管发光显示。
  13. 如权利要求12所述的AMOLED实时补偿系统，其中，该AMOLED实时补偿系统的工作过程还包括设于数据信号输入阶段之前的有机发光二极管阈值电压偏差检测阶段：所述栅极驱动信号为高电位，数据信号为低电位，检测开启信号为高电位，第一开关接地，第二开关闭合，驱动薄膜晶体管截止，检测薄膜晶体管导通，所述电流检测单元通过第二开关与所述检测线导通，电流检测单元通过检测线对有机发光二级管放电，电流检测单元将量测到的电流值传给所述控制模块，所述控制模块计算出有机发光二极管的阀值电压偏差值，并存在存储模块中；
    在接下来的数据信号输入阶段：控制模块先将有机发光二极管的阀值电压偏差补偿给数据信号，再将补偿后的数据信号输入源极驱动与实时检测补偿集成模块。
  14. 如权利要求12所述的AMOLED实时补偿系统，其中，所述第一开关在低电位的控制下接地，在高电位的控制下接第一运算放大器的输出端。
PCT/CN2015/091717 2015-09-09 2015-10-12 Amoled实时补偿系统 WO2017041343A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2018512297A JP2018528476A (ja) 2015-09-09 2015-10-12 Ａｍｏｌｅｄリアルタイム補償システム
GB1803467.8A GB2556799B (en) 2015-09-09 2015-10-12 Amoled real-time compensation system
US14/787,770 US9940878B2 (en) 2015-09-09 2015-10-12 AMOLED real-time compensation system
KR1020187006682A KR102007614B1 (ko) 2015-09-09 2015-10-12 Amoled 실시간 보상 시스템

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510572417.XA CN105047137B (zh) 2015-09-09 2015-09-09 Amoled实时补偿系统
CN201510572417.X 2015-09-09

Publications (1)

Publication Number Publication Date
WO2017041343A1 true WO2017041343A1 (zh) 2017-03-16

Family

ID=54453631

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/091717 WO2017041343A1 (zh) 2015-09-09 2015-10-12 Amoled实时补偿系统

Country Status (6)

Country Link
US (1) US9940878B2 (zh)
JP (1) JP2018528476A (zh)
KR (1) KR102007614B1 (zh)
CN (1) CN105047137B (zh)
GB (1) GB2556799B (zh)
WO (1) WO2017041343A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020523617A (ja) * 2017-06-15 2020-08-06 京東方科技集團股▲ふん▼有限公司Ｂｏｅ Ｔｅｃｈｎｏｌｏｇｙ Ｇｒｏｕｐ Ｃｏ．，Ｌｔｄ． 画素回路を駆動するための方法、画像回路及び表示パネル

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105304022B (zh) * 2015-11-27 2017-11-21 上海天马有机发光显示技术有限公司 一种amoled显示装置
CN106935200A (zh) * 2015-12-29 2017-07-07 上海和辉光电有限公司 有机发光显示装置及其驱动方法
KR102586459B1 (ko) * 2016-01-20 2023-10-10 주식회사 엘엑스세미콘 디스플레이 장치의 소스 드라이버
US10937360B2 (en) 2016-01-20 2021-03-02 Silicon Works Co., Ltd. Source driver for display apparatus
CN106097959A (zh) * 2016-06-02 2016-11-09 京东方科技集团股份有限公司 像素单元及其驱动方法、像素驱动电路和显示装置
CN106409198B (zh) 2016-11-24 2017-11-10 京东方科技集团股份有限公司 一种检测驱动电路的方法
CN107980159B (zh) * 2016-12-27 2021-06-29 深圳市柔宇科技股份有限公司 像素电路驱动方法、像素电路组及有机发光显示设备
KR102642578B1 (ko) 2016-12-29 2024-02-29 엘지디스플레이 주식회사 유기 발광 다이오드 표시 장치 및 그 구동 방법
KR102636683B1 (ko) * 2016-12-30 2024-02-14 엘지디스플레이 주식회사 유기 발광 다이오드 표시 장치
CN106782326B (zh) * 2017-03-06 2018-11-16 京东方科技集团股份有限公司 像素电路及其驱动方法、显示装置
CN106782312B (zh) * 2017-03-08 2019-01-29 合肥鑫晟光电科技有限公司 一种像素电路及其驱动方法、显示装置
CN107068054A (zh) * 2017-04-25 2017-08-18 深圳市华星光电技术有限公司 一种驱动电路及液晶显示器
CN106910463B (zh) * 2017-04-28 2021-03-05 深圳市华星光电半导体显示技术有限公司 一种amoled驱动电路及显示装置
US10424247B2 (en) 2017-04-28 2019-09-24 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd AMOLED driving circuit and AMOLED display device
CN108877650B (zh) * 2017-05-12 2020-12-18 京东方科技集团股份有限公司 像素驱动电路、驱动补偿方法、显示基板和显示装置
CN108877649B (zh) * 2017-05-12 2020-07-24 京东方科技集团股份有限公司 像素电路及其驱动方法、显示面板
CN107093402B (zh) 2017-06-02 2019-01-22 深圳市华星光电半导体显示技术有限公司 Oled显示面板驱动方法
CN107731163B (zh) 2017-10-30 2019-10-18 合肥鑫晟光电科技有限公司 像素驱动电路及其驱动方法、显示装置
US10621924B2 (en) 2017-11-08 2020-04-14 Novatek Microelectronics Corp. Display panel driving circuit and method for capturing driving circuit error information thereof
CN107978271B (zh) * 2017-12-20 2021-02-26 上海交通大学 Oled显示装置及其驱动方法
CN110097840B (zh) * 2018-01-29 2021-11-16 京东方科技集团股份有限公司 像素电路的检测方法、显示面板的驱动方法和显示装置
CN110364119B (zh) * 2018-03-26 2021-08-31 京东方科技集团股份有限公司 像素电路及其驱动方法、显示面板
CN108711400B (zh) * 2018-05-31 2020-08-07 京东方科技集团股份有限公司 像素电路及显示装置
WO2020010512A1 (zh) 2018-07-10 2020-01-16 上海视欧光电科技有限公司 一种像素电路及显示装置
CN110706657B (zh) * 2018-07-10 2021-03-09 合肥视涯技术有限公司 一种像素电路及显示装置
CN109036278B (zh) * 2018-10-10 2020-05-19 深圳市华星光电技术有限公司 Oled显示器及其驱动方法
CN109192141B (zh) 2018-10-30 2021-01-22 京东方科技集团股份有限公司 显示面板及其检测方法、显示装置
TWI681378B (zh) * 2018-11-15 2020-01-01 友達光電股份有限公司 顯示面板
CN109545134B (zh) * 2018-11-30 2020-07-03 昆山国显光电有限公司 一种oled显示面板驱动电路及驱动方法
JP7222706B2 (ja) * 2018-12-27 2023-02-15 キヤノン株式会社 表示装置および電子機器
CN109658868B (zh) * 2019-01-25 2020-11-27 北京大学深圳研究生院 加法器单元以及显示设备
CN109935205B (zh) * 2019-04-02 2020-12-08 深圳市华星光电半导体显示技术有限公司 像素驱动电路以及像素驱动电路的补偿方法
CN109979383B (zh) * 2019-04-24 2021-04-02 深圳市华星光电半导体显示技术有限公司 像素驱动电路以及显示面板
CN110197645B (zh) * 2019-05-20 2020-09-08 深圳市华星光电半导体显示技术有限公司 像素电路的驱动方法和补偿方法
WO2021189497A1 (zh) * 2020-03-27 2021-09-30 京东方科技集团股份有限公司 显示面板及其驱动方法
CN111583872B (zh) 2020-06-11 2021-03-12 京东方科技集团股份有限公司 像素补偿装置及像素补偿方法、显示装置
CN111785197B (zh) * 2020-08-06 2023-06-09 京东方科技集团股份有限公司 一种电流检测装置及显示装置
CN112309330B (zh) * 2020-11-10 2022-04-15 北京京东方光电科技有限公司 像素单元驱动补偿方法、装置、显示面板及显示装置
CN112731092A (zh) * 2020-12-15 2021-04-30 哈尔滨理工大学 一种有机薄膜晶体管的测试系统
CN112735340A (zh) * 2020-12-31 2021-04-30 合肥视涯技术有限公司 一种数据电流产生电路、驱动方法、驱动芯片和显示面板
US11462162B1 (en) * 2021-06-01 2022-10-04 Sharp Display Technology Corporation High current active matrix pixel architecture
CN113808529B (zh) * 2021-09-28 2023-03-21 深圳市华星光电半导体显示技术有限公司 像素电路及其外部补偿方法
CN114023244B (zh) * 2021-11-29 2023-12-29 Tcl华星光电技术有限公司 一种goa驱动电路、显示面板及显示装置
CN115019735B (zh) * 2022-06-28 2023-12-26 惠科股份有限公司 像素补偿方法、像素补偿装置及显示装置
CN114895231B (zh) * 2022-07-12 2022-10-21 南京宏泰半导体科技有限公司 一种高端电压差分采样校准系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1632850A (zh) * 2005-01-27 2005-06-29 广辉电子股份有限公司 显示器装置及其所使用的显示面板、像素电路和补偿机制
KR20110032937A (ko) * 2009-09-24 2011-03-30 엘지디스플레이 주식회사 유기발광다이오드 표시장치 및 그 구동방법
CN102881257A (zh) * 2012-10-18 2013-01-16 四川虹视显示技术有限公司 主动式有机发光二极管显示器及其驱动方法
CN103268756A (zh) * 2013-05-29 2013-08-28 上海中科高等研究院 Amoled电压外部补偿方法及系统
CN103681772A (zh) * 2013-12-27 2014-03-26 京东方科技集团股份有限公司 一种阵列基板和显示装置
US20150138177A1 (en) * 2013-11-18 2015-05-21 Samsung Display Co., Ltd Display device and driving method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4589614B2 (ja) * 2003-10-28 2010-12-01 株式会社 日立ディスプレイズ 画像表示装置
WO2006063448A1 (en) * 2004-12-15 2006-06-22 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
CA2590366C (en) * 2004-12-15 2008-09-09 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
JP2010044257A (ja) * 2008-08-14 2010-02-25 Fujifilm Corp 表示装置およびその駆動制御方法
JP5278119B2 (ja) * 2009-04-02 2013-09-04 ソニー株式会社 表示装置の駆動方法
WO2012164475A2 (en) * 2011-05-27 2012-12-06 Ignis Innovation Inc. Systems and methods for aging compensation in amoled displays
JP6138236B2 (ja) * 2013-03-14 2017-05-31 シャープ株式会社 表示装置およびその駆動方法
JP2014224904A (ja) * 2013-05-16 2014-12-04 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． 電気光学装置およびその駆動方法
KR102056784B1 (ko) * 2013-08-30 2020-01-22 엘지디스플레이 주식회사 유기 발광 표시 장치
CN103531151B (zh) * 2013-11-04 2016-03-02 京东方科技集团股份有限公司 Oled像素电路及驱动方法、显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1632850A (zh) * 2005-01-27 2005-06-29 广辉电子股份有限公司 显示器装置及其所使用的显示面板、像素电路和补偿机制
KR20110032937A (ko) * 2009-09-24 2011-03-30 엘지디스플레이 주식회사 유기발광다이오드 표시장치 및 그 구동방법
CN102881257A (zh) * 2012-10-18 2013-01-16 四川虹视显示技术有限公司 主动式有机发光二极管显示器及其驱动方法
CN103268756A (zh) * 2013-05-29 2013-08-28 上海中科高等研究院 Amoled电压外部补偿方法及系统
US20150138177A1 (en) * 2013-11-18 2015-05-21 Samsung Display Co., Ltd Display device and driving method thereof
CN103681772A (zh) * 2013-12-27 2014-03-26 京东方科技集团股份有限公司 一种阵列基板和显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020523617A (ja) * 2017-06-15 2020-08-06 京東方科技集團股▲ふん▼有限公司Ｂｏｅ Ｔｅｃｈｎｏｌｏｇｙ Ｇｒｏｕｐ Ｃｏ．，Ｌｔｄ． 画素回路を駆動するための方法、画像回路及び表示パネル
JP7107954B2 (ja) 2017-06-15 2022-07-27 京東方科技集團股▲ふん▼有限公司 画素回路を駆動するための方法、画像回路及び表示パネル

Also Published As

Publication number Publication date
GB2556799A (en) 2018-06-06
KR20180038519A (ko) 2018-04-16
JP2018528476A (ja) 2018-09-27
US20170162125A1 (en) 2017-06-08
US9940878B2 (en) 2018-04-10
KR102007614B1 (ko) 2019-08-05
GB2556799B (en) 2021-05-12
CN105047137A (zh) 2015-11-11
GB201803467D0 (en) 2018-04-18
CN105047137B (zh) 2017-05-31

Similar Documents

Publication Publication Date Title
WO2017041343A1 (zh) Amoled实时补偿系统
US10896637B2 (en) Method of driving organic light emitting display device
US10217412B2 (en) OLED display device drive system and OLED display drive method
US10019950B2 (en) Panel defect detection method and organic light-emitting display device using the same
US9135862B2 (en) Organic light emitting display device and method for operating the same
US10593260B1 (en) Pixel driving circuit for OLED display device and OLED display device
US9842546B2 (en) Organic light emitting display device for improving a contrast ratio
US9105236B2 (en) Light emitting display device
US10242616B2 (en) Pixel compensation circuit and active matrix organic light emitting diode display apparatus
WO2017080081A1 (zh) 采用外部补偿的amoled驱动电路架构
TWI437529B (zh) 補償驅動電晶體之特性偏移的顯示裝置及其驅動方法
US10198999B2 (en) Organic light emitting display device and method of compensating for image quality of organic light emitting display device
KR102212424B1 (ko) 표시 장치 및 표시 장치 구동방법
WO2018214258A1 (zh) Oled显示装置的ovss电压降的补偿方法及像素驱动电路
US10755635B2 (en) Organic light-emitting display device and related driving method
KR101932744B1 (ko) 픽셀 회로, 이를 위한 구동 방법 및 능동형 유기 발광 디스플레이
WO2017161650A1 (zh) 感测amoled像素驱动特性的系统及amoled显示装置
WO2020015337A1 (zh) 像素驱动电路感测方法及像素驱动电路
WO2020187200A1 (zh) 有机发光二极管显示基板及其驱动方法
CN110570820B (zh) Amoled显示装置及其驱动方法
US10354591B2 (en) Pixel driving circuit, repair method thereof and display device
US10748478B2 (en) OLED panel temperature compensation system and OLED panel temperature compensation method
US11037510B2 (en) Pixel driving system for AMOLED display device and driving method
US9262959B2 (en) EL display device
US11830428B2 (en) Display device and method for driving same

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14787770

Country of ref document: US

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

Ref document number: 15903446

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 201803467

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20151012

ENP Entry into the national phase

Ref document number: 2018512297

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20187006682

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15903446

Country of ref document: EP

Kind code of ref document: A1