CN105489165A - 像素补偿电路、方法、扫描驱动电路及平面显示装置 - Google Patents

像素补偿电路、方法、扫描驱动电路及平面显示装置 Download PDF

Info

Publication number
CN105489165A
CN105489165A CN201610066459.0A CN201610066459A CN105489165A CN 105489165 A CN105489165 A CN 105489165A CN 201610066459 A CN201610066459 A CN 201610066459A CN 105489165 A CN105489165 A CN 105489165A
Authority
CN
China
Prior art keywords
gate
controlled switch
switch
control end
voltage
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201610066459.0A
Other languages
English (en)
Other versions
CN105489165B (zh
Inventor
聂诚磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201610066459.0A priority Critical patent/CN105489165B/zh
Priority to PCT/CN2016/074557 priority patent/WO2017128469A1/zh
Priority to US15/028,920 priority patent/US10115340B2/en
Publication of CN105489165A publication Critical patent/CN105489165A/zh
Application granted granted Critical
Publication of CN105489165B publication Critical patent/CN105489165B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3225Control 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
    • G09G3/3233Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3225Control 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
    • G09G3/3258Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3266Details of drivers for scan electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/786Thin film transistors, i.e. transistors with a channel being at least partly a thin film
    • H01L29/78645Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/121Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1216Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being capacitors
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active 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
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0819Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active 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
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0842Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0262The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • G09G2320/045Compensation of drifts in the characteristics of light emitting or modulating elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1251Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs comprising TFTs having a different architecture, e.g. top- and bottom gate TFTs

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Ceramic Engineering (AREA)
  • Geometry (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

本发明公开了一种像素补偿电路、方法、扫描驱动电路及平面显示装置。像素补偿电路包括驱动开关的第一控制端连参考电压端,第一及第二可控开关的控制端连第一及第二扫描线,第一端连第一电压端,第二端连驱动开关的第一端;第二可控开关的第一端连驱动开关的第二端;有机发光二极管的阳极连第二可控开关的第二端,阴极接地;第三及第四可控开关的控制端连第三扫描线,第一端连第一可控开关的第二端及驱动开关的第一端,第二端连驱动开关的第二控制端;驱动开关的第二控制端经存储电容接地;第四可控开关的第一端连驱动开关的第二端,第二端连接数据线,以避免阈值电压漂移造成有机发光二极管的电流不稳定,以此实现面板亮度显示均匀。

Description

像素补偿电路、方法、扫描驱动电路及平面显示装置
技术领域
本发明涉及显示技术领域,特别是涉及一种像素补偿电路、方法、扫描驱动电路及平面显示装置。
背景技术
目前的有机发光二极管(OrganicLightEmittingdiode,OLED)显示器具有体积小、结构简单、自主发光、亮度高、可视角度大、响应时间短等优点,吸引了广泛的注意。
现有的有机发光二极管显示器中有一个晶体管作为驱动晶体管用于控制通过有机发光二极管OLED的电流,因此驱动晶体管的阈值电压的重要性便十分明显,所述阈值电压的正向或负向漂移都会使得在相同数据信号下有不同的电流通过有机发光二极管,目前的晶体管在使用过程中如氧化物半导体中的照光、源漏电极电压应力作用等因素,都可能导致阈值电压漂移,造成通过有机发光二极管的电流不稳定,进而引起面板亮度显示不均匀。
发明内容
本发明主要解决的技术问题是提供一种像素补偿电路、方法、扫描驱动电路及平面显示装置,以避免阈值电压漂移造成有机发光二极管的电流不稳定,以此实现面板亮度显示均匀。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种像素补偿电路,包括:
驱动开关,所述驱动开关包括第一控制端、第二控制端、第一端及第二端,所述驱动开关的第一控制端连接一参考电压端,用于接收所述参考电压端输出的参考电压;
第一可控开关,所述第一可控开关包括控制端、第一端及第二端,所述第一可控开关的控制端连接一第一扫描线,所述第一可控开关的第一端连接一第一电压端,用于接收所述第一电压端输出的第一电压,所述第一可控开关的第二端连接所述驱动开关的第一端;
第二可控开关,所述第二可控开关包括控制端、第一端及第二端,所述第二可控开关的控制端连接一第二扫描线,所述第二可控开关的第一端连接所述驱动开关的第二端;
有机发光二极管,所述有机发光二极管包括阳极及阴极,所述有机发光二极管的阳极连接所述第二可控开关的第二端,所述有机发光二极管的阴极接地;
第三可控开关,所述第三可控开关包括控制端、第一端及第二端,所述第三可控开关的控制端连接一第三扫描线,所述第三可控开关的第一端连接所述第一可控开关的第二端及所述驱动开关的第一端,所述第三可控开关的第二端连接所述驱动开关的第二控制端;
存储电容,所述存储电容包括第一端及第二端,所述存储电容的第一端连接所述驱动开关的第二控制端及所述第三可控开关的第二端,所述存储电容的第二端接地;及
第四可控开关,所述第四可控开关包括控制端、第一端及第二端,所述第四可控开关的控制端连接所述第三扫描线,所述第四可控开关的第一端连接所述驱动开关的第二端及所述第二可控开关的第一端,所述第四可控开关的第二端连接一数据线,用于接收所述数据线输出的第二电压。
其中,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极。
其中,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种像素补偿方法,包括:
在预充电阶段,驱动开关、第一可控开关、第三可控开关及第四可控开关均导通,第二可控开关截止,所述驱动开关的第二控制端与所述驱动开关的第一端相连,由于所述第一可控开关导通,所述驱动开关的第二控制端的电压与所述驱动开关的第一端的电压相等且均为所述第一电压,所述驱动开关的第一控制端的电压等于参考电压,由于所述第四可控开关导通,所述驱动开关的第二端的电压等于第二电压;
在编程阶段,所述驱动开关、所述第三可控开关及所述第四可控开关均导通,所述第一可控开关及所述第二可控开关均截止,所述驱动开关的阈值电压非常小,随着所述驱动开关的第二控制端与所述驱动开关的第一端之间电压不断减小,所述驱动开关的阈值电压不断上升,直到所述驱动开关的第一控制端的电压与所述驱动开关的第二端的电压之间的差值等于所述驱动开关的阈值电压时,所述驱动开关的第二控制端的电压不再变化并存储在存储电容中;及
在驱动发光阶段,所述驱动开关、所述第一可控开关及所述第二可控开关均导通,所述第三可控开关及所述第四可控开关均截止,在编程阶段得到的所述驱动开关的第二控制端的电压由所述存储电容维持,以使得所述驱动开关的阈值电压等于所述参考电压与所述第二电压的差值,此时所述驱动开关的第一控制端的电压仍然为所述参考电压,所述驱动开关的第二端的电压为有机发光二极管上的电压。
其中,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极。
其中,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种扫描驱动电路,所述扫描驱动电路包括像素补偿电路,所述像素补偿电路包括:
驱动开关,所述驱动开关包括第一控制端、第二控制端、第一端及第二端,所述驱动开关的第一控制端连接一参考电压端,用于接收所述参考电压端输出的参考电压;
第一可控开关,所述第一可控开关包括控制端、第一端及第二端,所述第一可控开关的控制端连接一第一扫描线,所述第一可控开关的第一端连接一第一电压端,用于接收所述第一电压端输出的第一电压,所述第一可控开关的第二端连接所述驱动开关的第一端;
第二可控开关,所述第二可控开关包括控制端、第一端及第二端,所述第二可控开关的控制端连接一第二扫描线,所述第二可控开关的第一端连接所述驱动开关的第二端;
有机发光二极管,所述有机发光二极管包括阳极及阴极,所述有机发光二极管的阳极连接所述第二可控开关的第二端,所述有机发光二极管的阴极接地;
第三可控开关,所述第三可控开关包括控制端、第一端及第二端,所述第三可控开关的控制端连接一第三扫描线,所述第三可控开关的第一端连接所述第一可控开关的第二端及所述驱动开关的第一端,所述第三可控开关的第二端连接所述驱动开关的第二控制端;
存储电容,所述存储电容包括第一端及第二端,所述存储电容的第一端连接所述驱动开关的第二控制端及所述第三可控开关的第二端,所述存储电容的第二端接地;及
第四可控开关,所述第四可控开关包括控制端、第一端及第二端,所述第四可控开关的控制端连接所述第三扫描线,所述第四可控开关的第一端连接所述驱动开关的第二端及所述第二可控开关的第一端,所述第四可控开关的第二端连接一数据线,用于接收所述数据线输出的第二电压。
其中,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种平面显示装置,所述平面显示装置包括像素补偿电路,所述像素补偿电路包括:
驱动开关,所述驱动开关包括第一控制端、第二控制端、第一端及第二端,所述驱动开关的第一控制端连接一参考电压端,用于接收所述参考电压端输出的参考电压;
第一可控开关,所述第一可控开关包括控制端、第一端及第二端,所述第一可控开关的控制端连接一第一扫描线,所述第一可控开关的第一端连接一第一电压端,用于接收所述第一电压端输出的第一电压,所述第一可控开关的第二端连接所述驱动开关的第一端;
第二可控开关,所述第二可控开关包括控制端、第一端及第二端,所述第二可控开关的控制端连接一第二扫描线,所述第二可控开关的第一端连接所述驱动开关的第二端;
有机发光二极管,所述有机发光二极管包括阳极及阴极,所述有机发光二极管的阳极连接所述第二可控开关的第二端,所述有机发光二极管的阴极接地;
第三可控开关,所述第三可控开关包括控制端、第一端及第二端,所述第三可控开关的控制端连接一第三扫描线,所述第三可控开关的第一端连接所述第一可控开关的第二端及所述驱动开关的第一端,所述第三可控开关的第二端连接所述驱动开关的第二控制端;
存储电容,所述存储电容包括第一端及第二端,所述存储电容的第一端连接所述驱动开关的第二控制端及所述第三可控开关的第二端,所述存储电容的第二端接地;及
第四可控开关,所述第四可控开关包括控制端、第一端及第二端,所述第四可控开关的控制端连接所述第三扫描线,所述第四可控开关的第一端连接所述驱动开关的第二端及所述第二可控开关的第一端,所述第四可控开关的第二端连接一数据线,用于接收所述数据线输出的第二电压。
其中,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
本发明的有益效果是:区别于现有技术的情况,本发明的所述像素补偿电路及方法通过使用双栅极薄膜晶体管作为驱动晶体管,因为双栅极薄膜晶体管所受到电压与光照的应力影响较小,同时由于双栅极薄膜晶体管阈值电压与顶栅电压负相关特性,能够通过输入预设电压来指定驱动晶体管的阈值电压,无需通过调整数据信号的大小来减弱驱动晶体管的阈值电压漂移,因此也不会增加驱动管的应力影响,以此避免了所述驱动晶体管的阈值电压漂移造成所述有机发光二极管的电流不稳定,以此实现面板亮度显示均匀。
附图说明
图1是本发明的像素补偿电路的结构示意图;
图2是本发明的像素补偿电路的波形图;
图3是本发明的扫描驱动电路的示意图;
图4是本发明的平面显示装置的示意图。
具体实施方式
请参阅图1,是本发明的像素补偿电路的结构示意图。如图1所示,本发明的像素补偿电路包括驱动开关T0,所述驱动开关T0包括第一控制端BG、第二控制端TG、第一端D及第二端S,所述驱动开关T0的第一控制端BG连接一参考电压端VPRE,用于接收所述参考电压端VPRE输出的参考电压Vpre
第一可控开关T1,所述第一可控开关T1包括控制端、第一端及第二端,所述第一可控开关T1的控制端连接一第一扫描线scan2,所述第一可控开关T1的第一端连接一第一电压端VDD1,用于接收所述第一电压端VDD1输出的第一电压VDD,所述第一可控开关T1的第二端连接所述驱动开关T0的第一端D;
第二可控开关T2,所述第二可控开关T2包括控制端、第一端及第二端,所述第二可控开关T2的控制端连接一第二扫描线scan3,所述第二可控开关T2的第一端连接所述驱动开关T0的第二端S;
有机发光二极管D1,所述有机发光二极管D1包括阳极及阴极,所述有机发光二极管D1的阳极连接所述第二可控开关T2的第二端,所述有机发光二极管D1的阴极接地;
第三可控开关T3,所述第三可控开关T3包括控制端、第一端及第二端,所述第三可控开关T3的控制端连接一第三扫描线scan1,所述第三可控开关T3的第一端连接所述第一可控开关T1的第二端及所述驱动开关T0的第一端D,所述第三可控开关T3的第二端S连接所述驱动开关T0的第二控制端TG;
存储电容C1,所述存储电容C1包括第一端及第二端,所述存储电容C1的第一端连接所述驱动开关T0的第二控制端TG及所述第三可控开关T3的第二端,所述存储电容C1的第二端接地;
第四可控开关T4,所述第四可控开关T4包括控制端、第一端及第二端,所述第四可控开关T4的控制端连接所述第三扫描线scan3,所述第四可控开关T4的第一端连接所述驱动开关T0的第二端S及所述第二可控开关T2的第一端,所述第四可控开关T4的第二端连接一数据线Data,用于接收所述数据线Data输出的第二电压VData
在本实施例中,所述驱动开关T0为双栅极薄膜晶体管,所述驱动开关T0的第一控制端BG、第二控制端TG、第一端D及第二端S分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极。
在本实施例中,所述第一可控开关至所述第四可控开关T1-T4均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关T1-T4的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
请参阅图2,是本发明上述实施例的所述像素补偿电路的波形图。根据图1及图2获得所述像素补偿电路的工作原理如下(即所述像素补偿方法):在预充电阶段,驱动开关T0、第一可控开关T1、第三可控开关T3及第四可控开关T4均导通,第二可控开关T2截止,所述驱动开关T0的第二控制端TG与所述驱动开关T0的第一端D相连,由于所述第一可控开关T1导通,所述驱动开关T0的第二控制端TG的电压与所述驱动开关T0的第一端D的电压相等且均为所述第一电压VDD,即VTG=VD=VDD(公式1),所述驱动开关T0的第一控制端BG的电压等于参考电压Vpre,即VBG=Vpre(公式2),由于所述第四可控开关T4导通,所述驱动开关T0的第二端S的电压等于第二电压VData,即VS=VData(公式3),完成初始化过程;
在编程阶段,所述驱动开关T0、所述第三可控开关T3及所述第四可控开关T4均导通,所述第一可控开关T1及所述第二可控开关T2均截止,所述驱动开关T0的阈值电压Vth非常小,随着所述驱动开关T0的第二控制端TG与所述驱动开关T0的第一端D之间电压不断减小,所述驱动开关T0的阈值电压Vth不断上升,直到所述驱动开关T0的第一控制端BG的电压与所述驱动开关T0的第二端S的电压之间的差值等于所述驱动开关T0的阈值电压Vth时,即VBG-VS=Vth(公式4),所述驱动开关T0的第二控制端TG的电压不再变化并存储在存储电容C1中,此时所述驱动开关T0的阈值电压Vth=VBG-VS=Vpre-VData(公式5);
在驱动发光阶段,所述驱动开关T0、所述第一可控开关T1及所述第二可控开关T2均导通,所述第三可控开关T3及所述第四可控开关T4均截止,在编程阶段得到的所述驱动开关T0的第二控制端TG的电压由所述存储电容C1维持,以使得所述驱动开关T0的阈值电压Vth等于所述参考电压Vpre与所述第二电压VData的差值,即Vth=Vpre-VData(公式6),此时所述驱动开关T0的第一控制端BG的电压仍然为所述参考电压Vpre,所述驱动开关T0的第二端S的电压为有机发光二极管D1上的电压VOLED,根据晶体管电流公式及上述公式1至公式6得到:
I=β(VBG-Vth-Vs)2=β(Vpre-Vpre+VData-VOLED)2=β(VData-VOLED)2(公式7)由上述公式7可以看出,通过所述有机发光二极管D1的电流与所述驱动开关T0的阈值电压Vth无关,因此,所述像素补偿电路避免了所述驱动开关T0的阈值电压Vth漂移造成所述有机发光二极管D1的电流不稳定,以此实现面板亮度显示均匀。
请参阅图3,为本发明一种扫描驱动电路的示意图。所述扫描驱动电路中包括所述像素补偿电路,用于避免所述扫描驱动电路中的驱动晶体管发生阈值电压漂移,从而造成面板亮度显示不均匀。
请参阅图4,为本发明一种平面显示装置的示意图。所述平面显示装置例如可为OLED,其包括前述的扫描驱动电路及像素补偿电路,所述具有像素补偿电路的扫描驱动电路设置在所述平面显示装置的周边,例如设置在平面显示装置的两端。
所述像素补偿电路及方法通过使用双栅极薄膜晶体管作为驱动晶体管,因为双栅极薄膜晶体管所受到电压与光照的应力影响较小,同时由于双栅极薄膜晶体管阈值电压与顶栅电压负相关特性,能够通过输入预设电压来指定驱动晶体管的阈值电压,无需通过调整数据信号的大小来减弱驱动晶体管的阈值电压漂移,因此也不会增加驱动管的应力影响,以此避免了所述驱动晶体管的阈值电压漂移造成所述有机发光二极管的电流不稳定,以此实现面板亮度显示均匀。
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 (10)

1.一种像素补偿电路,其特征在于,所述像素补偿电路包括:
驱动开关,所述驱动开关包括第一控制端、第二控制端、第一端及第二端,所述驱动开关的第一控制端连接一参考电压端,用于接收所述参考电压端输出的参考电压;
第一可控开关,所述第一可控开关包括控制端、第一端及第二端,所述第一可控开关的控制端连接一第一扫描线,所述第一可控开关的第一端连接一第一电压端,用于接收所述第一电压端输出的第一电压,所述第一可控开关的第二端连接所述驱动开关的第一端;
第二可控开关,所述第二可控开关包括控制端、第一端及第二端,所述第二可控开关的控制端连接一第二扫描线,所述第二可控开关的第一端连接所述驱动开关的第二端;
有机发光二极管,所述有机发光二极管包括阳极及阴极,所述有机发光二极管的阳极连接所述第二可控开关的第二端,所述有机发光二极管的阴极接地;
第三可控开关,所述第三可控开关包括控制端、第一端及第二端,所述第三可控开关的控制端连接一第三扫描线,所述第三可控开关的第一端连接所述第一可控开关的第二端及所述驱动开关的第一端,所述第三可控开关的第二端连接所述驱动开关的第二控制端;
存储电容,所述存储电容包括第一端及第二端,所述存储电容的第一端连接所述驱动开关的第二控制端及所述第三可控开关的第二端,所述存储电容的第二端接地;及
第四可控开关,所述第四可控开关包括控制端、第一端及第二端,所述第四可控开关的控制端连接所述第三扫描线,所述第四可控开关的第一端连接所述驱动开关的第二端及所述第二可控开关的第一端,所述第四可控开关的第二端连接一数据线,用于接收所述数据线输出的第二电压。
2.根据权利要求1所述的像素补偿电路,其特征在于,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极。
3.根据权利要求1所述的像素补偿电路,其特征在于,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
4.一种像素补偿方法,其特征在于,所述像素补偿方法包括:
在预充电阶段,驱动开关、第一可控开关、第三可控开关及第四可控开关均导通,第二可控开关截止,所述驱动开关的第二控制端与所述驱动开关的第一端相连,由于所述第一可控开关导通,所述驱动开关的第二控制端的电压与所述驱动开关的第一端的电压相等且均为所述第一电压,所述驱动开关的第一控制端的电压等于参考电压,由于所述第四可控开关导通,所述驱动开关的第二端的电压等于第二电压;
在编程阶段,所述驱动开关、所述第三可控开关及所述第四可控开关均导通,所述第一可控开关及所述第二可控开关均截止,所述驱动开关的阈值电压非常小,随着所述驱动开关的第二控制端与所述驱动开关的第一端之间电压不断减小,所述驱动开关的阈值电压不断上升,直到所述驱动开关的第一控制端的电压与所述驱动开关的第二端的电压之间的差值等于所述驱动开关的阈值电压时,所述驱动开关的第二控制端的电压不再变化并存储在存储电容中;及
在驱动发光阶段,所述驱动开关、所述第一可控开关及所述第二可控开关均导通,所述第三可控开关及所述第四可控开关均截止,在编程阶段得到的所述驱动开关的第二控制端的电压由所述存储电容维持,以使得所述驱动开关的阈值电压等于所述参考电压与所述第二电压的差值,此时所述驱动开关的第一控制端的电压仍然为所述参考电压,所述驱动开关的第二端的电压为有机发光二极管上的电压。
5.根据权利要求4所述的像素补偿方法,其特征在于,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极。
6.根据权利要求4所述的像素补偿方法,其特征在于,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
7.一种扫描驱动电路,其特征在于,所述扫描驱动电路包括像素补偿电路,所述像素补偿电路包括:
驱动开关,所述驱动开关包括第一控制端、第二控制端、第一端及第二端,所述驱动开关的第一控制端连接一参考电压端,用于接收所述参考电压端输出的参考电压;
第一可控开关,所述第一可控开关包括控制端、第一端及第二端,所述第一可控开关的控制端连接一第一扫描线,所述第一可控开关的第一端连接一第一电压端,用于接收所述第一电压端输出的第一电压,所述第一可控开关的第二端连接所述驱动开关的第一端;
第二可控开关,所述第二可控开关包括控制端、第一端及第二端,所述第二可控开关的控制端连接一第二扫描线,所述第二可控开关的第一端连接所述驱动开关的第二端;
有机发光二极管,所述有机发光二极管包括阳极及阴极,所述有机发光二极管的阳极连接所述第二可控开关的第二端,所述有机发光二极管的阴极接地;
第三可控开关,所述第三可控开关包括控制端、第一端及第二端,所述第三可控开关的控制端连接一第三扫描线,所述第三可控开关的第一端连接所述第一可控开关的第二端及所述驱动开关的第一端,所述第三可控开关的第二端连接所述驱动开关的第二控制端;
存储电容,所述存储电容包括第一端及第二端,所述存储电容的第一端连接所述驱动开关的第二控制端及所述第三可控开关的第二端,所述存储电容的第二端接地;及
第四可控开关,所述第四可控开关包括控制端、第一端及第二端,所述第四可控开关的控制端连接所述第三扫描线,所述第四可控开关的第一端连接所述驱动开关的第二端及所述第二可控开关的第一端,所述第四可控开关的第二端连接一数据线,用于接收所述数据线输出的第二电压。
8.根据权利要求7所述的扫描驱动电路,其特征在于,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
9.一种平面显示装置,其特征在于,所述平面显示装置包括像素补偿电路,所述像素补偿电路包括:
驱动开关,所述驱动开关包括第一控制端、第二控制端、第一端及第二端,所述驱动开关的第一控制端连接一参考电压端,用于接收所述参考电压端输出的参考电压;
第一可控开关,所述第一可控开关包括控制端、第一端及第二端,所述第一可控开关的控制端连接一第一扫描线,所述第一可控开关的第一端连接一第一电压端,用于接收所述第一电压端输出的第一电压,所述第一可控开关的第二端连接所述驱动开关的第一端;
第二可控开关,所述第二可控开关包括控制端、第一端及第二端,所述第二可控开关的控制端连接一第二扫描线,所述第二可控开关的第一端连接所述驱动开关的第二端;
有机发光二极管,所述有机发光二极管包括阳极及阴极,所述有机发光二极管的阳极连接所述第二可控开关的第二端,所述有机发光二极管的阴极接地;
第三可控开关,所述第三可控开关包括控制端、第一端及第二端,所述第三可控开关的控制端连接一第三扫描线,所述第三可控开关的第一端连接所述第一可控开关的第二端及所述驱动开关的第一端,所述第三可控开关的第二端连接所述驱动开关的第二控制端;
存储电容,所述存储电容包括第一端及第二端,所述存储电容的第一端连接所述驱动开关的第二控制端及所述第三可控开关的第二端,所述存储电容的第二端接地;及
第四可控开关,所述第四可控开关包括控制端、第一端及第二端,所述第四可控开关的控制端连接所述第三扫描线,所述第四可控开关的第一端连接所述驱动开关的第二端及所述第二可控开关的第一端,所述第四可控开关的第二端连接一数据线,用于接收所述数据线输出的第二电压。
10.根据权利要求9所述的平面显示装置,其特征在于,所述驱动开关为双栅极薄膜晶体管,所述驱动开关的第一控制端、第二控制端、第一端及第二端分别对应所述双栅极薄膜晶体管的底栅、顶栅、漏极及源极,所述第一可控开关至所述第四可控开关均为NMOS型薄膜晶体管,所述第一可控开关至所述第四可控开关的控制端、第一端及第二端分别对应所述NMOS型薄膜晶体管的栅极、漏极及源极。
CN201610066459.0A 2016-01-29 2016-01-29 像素补偿电路、方法、扫描驱动电路及平面显示装置 Active CN105489165B (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201610066459.0A CN105489165B (zh) 2016-01-29 2016-01-29 像素补偿电路、方法、扫描驱动电路及平面显示装置
PCT/CN2016/074557 WO2017128469A1 (zh) 2016-01-29 2016-02-25 像素补偿电路、方法及平面显示装置
US15/028,920 US10115340B2 (en) 2016-01-29 2016-02-25 Pixel compensation circuit, method and flat display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610066459.0A CN105489165B (zh) 2016-01-29 2016-01-29 像素补偿电路、方法、扫描驱动电路及平面显示装置

Publications (2)

Publication Number Publication Date
CN105489165A true CN105489165A (zh) 2016-04-13
CN105489165B CN105489165B (zh) 2018-05-11

Family

ID=55676122

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610066459.0A Active CN105489165B (zh) 2016-01-29 2016-01-29 像素补偿电路、方法、扫描驱动电路及平面显示装置

Country Status (3)

Country Link
US (1) US10115340B2 (zh)
CN (1) CN105489165B (zh)
WO (1) WO2017128469A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106504699A (zh) * 2016-10-14 2017-03-15 深圳市华星光电技术有限公司 Amoled像素驱动电路及驱动方法
CN107248394A (zh) * 2017-08-02 2017-10-13 深圳市华星光电半导体显示技术有限公司 Amoled显示面板的驱动电路及amoled显示面板
CN107358915A (zh) * 2017-08-11 2017-11-17 上海天马有机发光显示技术有限公司 一种像素电路、其驱动方法、显示面板及显示装置
US10304377B2 (en) 2017-08-02 2019-05-28 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Driving circuit for AMOLED display panel and AMOLED display panel
CN110189707A (zh) * 2019-05-30 2019-08-30 京东方科技集团股份有限公司 一种像素驱动电路及其驱动方法、显示装置
CN110444167A (zh) * 2019-06-28 2019-11-12 福建华佳彩有限公司 一种amoled补偿电路

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104732927B (zh) * 2015-04-09 2017-10-03 京东方科技集团股份有限公司 一种像素电路及其驱动方法和显示装置
KR20210013488A (ko) * 2019-07-26 2021-02-04 삼성디스플레이 주식회사 표시장치 및 표시장치의 구동 방법
US11442572B2 (en) 2019-10-17 2022-09-13 Samsung Electronics Co., Ltd. Touch display controller and touch display system including the same
US10916197B1 (en) * 2020-02-14 2021-02-09 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Pixel compensation circuit and display panel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200712599A (en) * 2005-09-05 2007-04-01 Au Optronics Corp Display apparatus and thin-film-transistor discharge method therefor
CN102315278A (zh) * 2010-07-07 2012-01-11 三星移动显示器株式会社 双栅薄膜晶体管及包括双栅薄膜晶体管的oled显示装置
JP2012255875A (ja) * 2011-06-08 2012-12-27 Sony Corp 画素回路、表示装置、電子機器、及び、画素回路の駆動方法
CN103871362A (zh) * 2012-12-17 2014-06-18 乐金显示有限公司 有机发光显示器
US8847942B2 (en) * 2011-03-29 2014-09-30 Intrigue Technologies, Inc. Method and circuit for compensating pixel drift in active matrix displays
CN104732927A (zh) * 2015-04-09 2015-06-24 京东方科技集团股份有限公司 一种像素电路及其驱动方法和显示装置
CN105280141A (zh) * 2015-11-11 2016-01-27 北京大学 一种oled显示像素电路及驱动方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9812742D0 (en) * 1998-06-12 1998-08-12 Philips Electronics Nv Active matrix electroluminescent display devices
JP2003150104A (ja) 2001-11-15 2003-05-23 Matsushita Electric Ind Co Ltd El表示装置の駆動方法とel表示装置および情報表示装置
CN101251981B (zh) * 2002-03-04 2011-03-16 三洋电机株式会社 有机电致发光显示装置及其应用
US9190456B2 (en) * 2012-04-25 2015-11-17 Ignis Innovation Inc. High resolution display panel with emissive organic layers emitting light of different colors
CN103077680B (zh) 2013-01-10 2016-04-20 上海和辉光电有限公司 一种oled像素驱动电路
TWI625714B (zh) * 2014-02-21 2018-06-01 群創光電股份有限公司 有機發光顯示器
TWI514352B (zh) * 2014-05-20 2015-12-21 Au Optronics Corp 有機發光二極體顯示器之像素驅動電路及其操作方法
CN104299572B (zh) 2014-11-06 2016-10-12 京东方科技集团股份有限公司 像素电路、显示基板和显示面板

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200712599A (en) * 2005-09-05 2007-04-01 Au Optronics Corp Display apparatus and thin-film-transistor discharge method therefor
CN102315278A (zh) * 2010-07-07 2012-01-11 三星移动显示器株式会社 双栅薄膜晶体管及包括双栅薄膜晶体管的oled显示装置
US8847942B2 (en) * 2011-03-29 2014-09-30 Intrigue Technologies, Inc. Method and circuit for compensating pixel drift in active matrix displays
JP2012255875A (ja) * 2011-06-08 2012-12-27 Sony Corp 画素回路、表示装置、電子機器、及び、画素回路の駆動方法
CN103871362A (zh) * 2012-12-17 2014-06-18 乐金显示有限公司 有机发光显示器
CN104732927A (zh) * 2015-04-09 2015-06-24 京东方科技集团股份有限公司 一种像素电路及其驱动方法和显示装置
CN105280141A (zh) * 2015-11-11 2016-01-27 北京大学 一种oled显示像素电路及驱动方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106504699A (zh) * 2016-10-14 2017-03-15 深圳市华星光电技术有限公司 Amoled像素驱动电路及驱动方法
WO2018068391A1 (zh) * 2016-10-14 2018-04-19 深圳市华星光电技术有限公司 Amoled像素驱动电路及驱动方法
CN106504699B (zh) * 2016-10-14 2019-02-01 深圳市华星光电技术有限公司 Amoled像素驱动电路及驱动方法
CN107248394A (zh) * 2017-08-02 2017-10-13 深圳市华星光电半导体显示技术有限公司 Amoled显示面板的驱动电路及amoled显示面板
CN107248394B (zh) * 2017-08-02 2018-01-12 深圳市华星光电半导体显示技术有限公司 Amoled显示面板的驱动电路及amoled显示面板
WO2019024252A1 (zh) * 2017-08-02 2019-02-07 深圳市华星光电半导体显示技术有限公司 Amoled显示面板的驱动电路及amoled显示面板
US10304377B2 (en) 2017-08-02 2019-05-28 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Driving circuit for AMOLED display panel and AMOLED display panel
CN107358915A (zh) * 2017-08-11 2017-11-17 上海天马有机发光显示技术有限公司 一种像素电路、其驱动方法、显示面板及显示装置
CN107358915B (zh) * 2017-08-11 2020-01-07 上海天马有机发光显示技术有限公司 一种像素电路、其驱动方法、显示面板及显示装置
CN110189707A (zh) * 2019-05-30 2019-08-30 京东方科技集团股份有限公司 一种像素驱动电路及其驱动方法、显示装置
CN110444167A (zh) * 2019-06-28 2019-11-12 福建华佳彩有限公司 一种amoled补偿电路

Also Published As

Publication number Publication date
US10115340B2 (en) 2018-10-30
US20180047333A1 (en) 2018-02-15
CN105489165B (zh) 2018-05-11
WO2017128469A1 (zh) 2017-08-03

Similar Documents

Publication Publication Date Title
CN105489165A (zh) 像素补偿电路、方法、扫描驱动电路及平面显示装置
CN105741781B (zh) Amoled像素驱动电路及像素驱动方法
CN106504707B (zh) Oled像素混合补偿电路及混合补偿方法
US10490136B2 (en) Pixel circuit and display device
US9583041B2 (en) Pixel circuit and driving method thereof, display panel, and display device
US9508287B2 (en) Pixel circuit and driving method thereof, display apparatus
US9355595B2 (en) Pixel unit driving circuit having an erasing transistor and matching transistor, and method thereof
CN104485074B (zh) 像素驱动电路、方法和显示装置
US9984622B2 (en) Pixel driving circuit, driving method thereof and display device using the same
US20210166624A1 (en) Pixel driver circuit, display device and pixel driving method
CN107424563A (zh) 有机发光二极管显示装置
TWI533277B (zh) 有機發光二極體畫素電路
CN113571009B (zh) 发光器件驱动电路、背光模组以及显示面板
CN105528992A (zh) 像素补偿电路、方法、扫描驱动电路及平面显示装置
CN104867456A (zh) 像素电路及其驱动方法、显示装置
CN104575392A (zh) 像素驱动电路及其驱动方法
CN105469744A (zh) 像素补偿电路、方法、扫描驱动电路及平面显示装置
CN106504700A (zh) Amoled像素驱动电路及驱动方法
CN104050918A (zh) 像素单元驱动电路及显示装置
CN105469745B (zh) 像素补偿电路、方法、扫描驱动电路及平面显示装置
CN109427298B (zh) 显示驱动方法和显示装置
CN109166528A (zh) 像素电路及其驱动方法
CN104537983A (zh) 像素电路及其驱动方法、显示装置
WO2017045376A1 (zh) 像素电路及其驱动方法、显示面板和显示装置
CN105469743A (zh) 像素补偿电路、扫描驱动电路及平面显示装置

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant