CN105469744B - 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

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CN105469744B
CN105469744B CN201610067869.7A CN201610067869A CN105469744B CN 105469744 B CN105469744 B CN 105469744B CN 201610067869 A CN201610067869 A CN 201610067869A CN 105469744 B CN105469744 B CN 105469744B
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controllable switch
switch
control terminal
connects
driving
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CN105469744A (zh
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韩佰祥
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/021,709 priority patent/US9892684B2/en
Priority to PCT/CN2016/074528 priority patent/WO2017128464A1/zh
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    • 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
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    • 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]
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    • 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
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    • 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
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    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G—PHYSICS
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    • 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]
    • G09G3/3266—Details of drivers for scan electrodes
    • G—PHYSICS
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
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    • G09G2300/00—Aspects of the constitution of display devices
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    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
    • 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
    • G09G2310/0262—The 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
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    • G09G2320/043—Preventing or counteracting the effects of ageing
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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (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。像素补偿电路包括第一及第三可控开关的控制端连第一及第二扫描线，第一端连数据线，第二端连驱动开关的控制端；有机发光二极管的阳极连驱动开关的第二端，阴极接地；第二可控开关的控制端连发光控制端，第一端连电压端，第二端连驱动开关的第一端；第三可控开关的第一端连第二可控开关的第一端，第二端连驱动开关的控制端；第四及第五可控开关的控制端连第二扫描线，第一端连驱动开关的第一端，第二端连参考电压端；第五可控开关的第一端连驱动开关的第二端，第二端连参考电压端；驱动开关的控制端经存储电容连第一端，以对阈值电压漂移进行恢复，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(Organic Light Emitting diode，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的电流，目前的驱动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，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，导致有机发光二极管器件劣化，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，以对阈值电压漂移进行恢复，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：
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数据线；
驱动开关，所述驱动开关包括控制端、第一端及第二端，所述驱动开关的控制端连接所述第一可控开关的第二端；
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驱动开关的第二端，所述有机发光二极管的阴极接地；
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发光控制端，所述第二可控开关的第一端连接一电压端，所述第二可控开关的第二端连接所述驱动开关的第一端；
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二扫描线，所述第三可控开关的第一端连接所述第二可控开关的第一端，所述第三可控开关的第二端连接所述驱动开关的控制端；
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二扫描线，所述第四可控开关的第一端连接所述驱动开关的第一端，所述第四可控开关的第二端连接一参考电压端；
第五可控开关，所述第五可控开关包括控制端、第一端及第二端，所述第五可控开关的控制端连接所述第二扫描线，所述第五可控开关的第一端连接所述驱动开关的第二端，所述第五可控开关的第二端连接所述参考电压端；及
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控制端，所述存储电容的第二端连接所述驱动开关的第一端。
其中，所述驱动开关、所述第一可控开关至所述第五可控开关均为PMOS型薄膜晶体管或均为NMOS型薄膜晶体管或为PMOS型薄膜晶体管与NMOS型薄膜晶体管的组合，所述驱动开关、第一可控开关至所述第五可控开关的控制端、第一端及第二端分别对应所述薄膜晶体管的栅极、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：提供一种像素补偿电路，包括：
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数据线；
驱动开关，所述驱动开关包括控制端、第一端及第二端，所述驱动开关的控制端连接所述第一可控开关的第二端；
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驱动开关的第二端，所述有机发光二极管的阴极接地；
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发光控制端，所述第二可控开关的第一端连接一电压端，所述第二可控开关的第二端连接所述驱动开关的第一端；
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二扫描线，所述第三可控开关的第一端连接所述第二可控开关的第一端，所述第三可控开关的第二端连接所述驱动开关的控制端；
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二扫描线，所述第四可控开关的第一端连接所述驱动开关的第一端，所述第四可控开关的第二端连接一参考电压端；
第五可控开关，所述第五可控开关包括控制端、第一端及第二端，所述第五可控开关的控制端连接所述第二扫描线，所述第五可控开关的第一端连接所述驱动开关的第二端，所述第五可控开关的第二端连接所述参考电压端；及
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控制端，所述存储电容的第二端连接所述驱动开关的第二端。
其中，所述驱动开关、所述第一可控开关至所述第五可控开关均为PMOS型薄膜晶体管或均为NMOS型薄膜晶体管或为PMOS型薄膜晶体管与NMOS型薄膜晶体管的组合，所述驱动开关、第一可控开关至所述第五可控开关的控制端、第一端及第二端分别对应所述薄膜晶体管的栅极、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：
在编程/驱动发光阶段，第二扫描线输出高电平信号，第三可控开关、第四可控开关及第五可控开关均截止，第一扫描线及发光控制线均出低电平信号，驱动开关、第一及第二可控开关均导通，所述第一扫描线逐行开启写入数据信息，有机发光二极管发光；及
在电性恢复阶段，所述第二扫描线输出低电平信号，所述驱动开关、所述第三可控开关、所述第四可控开关及所述第五可控开关均导通，所述第一扫描线及所述发光控制线均输出高电平信号，所述第一可控开关及所述第二可控开关均截止，此时所述驱动开关控制端的电压等于电压端输出的电压，所述驱动开关的第一端及第二端的电压均等于参考电压端输出的负参考电压，所述驱动开关进行电性恢复，同时所述驱动开关的第一端的负参考电压对所述有机发光二极管进行电性恢复。
其中，所述驱动开关、所述第一可控开关至所述第五可控开关均为PMOS型薄膜晶体管或均为NMOS型薄膜晶体管或为PMOS型薄膜晶体管与NMOS型薄膜晶体管的组合，所述驱动开关、第一可控开关至所述第五可控开关的控制端、第一端及第二端分别对应所述薄膜晶体管的栅极、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上述的像素补偿电路。
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上述的像素补偿电路。
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多个晶体管对所述驱动开关及所述有机发光二极管的阈值电压漂移进行恢复，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第一实施例的结构示意图；
图2是本发明的像素补偿电路的第二实施例的结构示意图；
图3是本发明的像素补偿电路的波形图；
图4是本发明的扫描驱动电路的示意图；
图5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第一实施例的结构示意图。如图1所示，本发明的像素补偿电路包括第一可控开关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scan，所述第一可控开关T1的第一端连接一数据线Data；
驱动开关T0，所述驱动开关T0包括控制端、第一端及第二端，所述驱动开关T0的控制端连接所述第一可控开关T1的第二端；
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的阳极连接所述驱动开关T0的第二端，所述有机发光二极管D1的阴极接地；
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的控制端连接一发光控制端Em，所述第二可控开关T2的第一端连接一电压端VDD1，所述第二可控开关T2的第二端连接所述驱动开关T0的第一端；
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的控制端连接一第二扫描线scan2，所述第三可控开关T3的第一端连接所述第二可控开关T2的第一端，所述第三可控开关T3的第二端连接所述驱动开关T0的控制端；
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二扫描线scan2，所述第四可控开关T4的第一端连接所述驱动开关T0的第一端，所述第四可控开关T4的第二端连接一参考电压端VREF；
第五可控开关T5，所述第五可控开关T5包括控制端、第一端及第二端，所述第五可控开关T5的控制端连接所述第二扫描线scan2，所述第五可控开关T5的第一端连接所述驱动开关T0的第二端，所述第五可控开关T5的第二端连接所述参考电压端VREF；及
所述存储电容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的控制端，所述存储电容C1的第二端连接所述驱动开关T0的第一端。
在本实施例中，所述驱动开关T0、所述第一可控开关至所述第五可控开关T1-T5均为PMOS型薄膜晶体管或均为NMOS型薄膜晶体管或为PMOS型薄膜晶体管与NMOS型薄膜晶体管的组合，所述驱动开关T0、第一可控开关至所述第五可控开关T1-T5的控制端、第一端及第二端分别对应所述薄膜晶体管的栅极、漏极及源极。
请参阅图2，是本发明的像素补偿电路的第二实施例的结构示意图。所述像素补偿电路的第二实施例与第一实施例的区别之处在于：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的控制端，所述存储电容C1的第二端连接所述驱动开关T0的第二端。
请参阅图3，是本发明所述像素补偿电路的波形图。根据图1至图3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)：
在编程/驱动发光阶段，第二扫描线scan2输出高电平信号，第三可控开关T3、第四可控开关T4及第五可控开关T5均截止，第一扫描线scan及发光控制线Em均出低电平信号，驱动开关T0、第一及第二可控开关T1及T2均导通，所述第一扫描线scan逐行开启写入数据信息，有机发光二极管D1发光；及
在电性恢复阶段，所述第二扫描线scan2输出低电平信号，所述驱动开关T0、所述第三可控开关T3、所述第四可控开关T4及所述第五可控开关T5均导通，所述第一扫描线scan及所述发光控制线Em均输出高电平信号，所述第一可控开关T1及所述第二可控开关T2均截止，此时所述驱动开关T0控制端的电压等于电压端VDD1输出的电压VDD，所述驱动开关T0的第一端及第二端的电压均等于参考电压端VREF输出的负参考电压Vref，所述驱动开关T0进行电性恢复，同时所述驱动开关T0的第一端的负参考电压对所述有机发光二极管D1进行电性恢复。因此，所述像素补偿电路对阈值电压漂移进行恢复，实现面板亮度显示均匀。
请参阅图4，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上述像素补偿电路中的任何一个，用于对所述扫描驱动电路中的阈值电压漂移进行恢复，实现面板亮度显示均匀。
请参阅图5，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或LCD，其包括前述任一个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多个晶体管对所述驱动开关及所述有机发光二极管的阈值电压漂移进行恢复，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 (6)

1.一种像素补偿电路，其特征在于，所述像素补偿电路包括：
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数据线；
驱动开关，所述驱动开关包括控制端、第一端及第二端，所述驱动开关的控制端连接所述第一可控开关的第二端；
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驱动开关的第二端，所述有机发光二极管的阴极接地；
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发光控制端，所述第二可控开关的第一端连接一电压端，所述第二可控开关的第二端连接所述驱动开关的第一端；
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二扫描线，所述第三可控开关的第一端连接所述第二可控开关的第一端，所述第三可控开关的第二端连接所述驱动开关的控制端；
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二扫描线，所述第四可控开关的第一端连接所述驱动开关的第一端，所述第四可控开关的第二端连接一参考电压端；
第五可控开关，所述第五可控开关包括控制端、第一端及第二端，所述第五可控开关的控制端连接所述第二扫描线，所述第五可控开关的第一端连接所述驱动开关的第二端，所述第五可控开关的第二端连接所述参考电压端；及
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控制端，所述存储电容的第二端连接所述驱动开关的第一端；
其中，所述第一至第五可控开关及所述驱动开关均为PMOS型薄膜晶体管，所述第一至第三可控开关的控制端、第一端及第二端分别对应所述PMOS型薄膜晶体管的栅极、漏极及源极，所述驱动开关、第四及第五可控开关的控制端、第一端及第二端分别对应所述PMOS型薄膜晶体管的栅极、源极及漏极；
在编程/驱动发光阶段，第二扫描线输出高电平信号，第三可控开关、第四可控开关及第五可控开关均截止，第一扫描线及发光控制线均输出低电平信号，驱动开关、第一及第二可控开关均导通，所述第一扫描线逐行开启写入数据信息，有机发光二极管发光；
在电性恢复阶段，所述第二扫描线输出低电平信号，所述第三可控开关、所述第四可控开关及所述第五可控开关均导通，所述第一扫描线及所述发光控制线均输出高电平信号，所述第一可控开关及所述第二可控开关均截止，此时所述驱动开关控制端的电压等于电压端输出的电压，所述驱动开关的第一端及第二端的电压均等于参考电压端输出的负参考电压，所述驱动开关进行电性恢复，同时所述驱动开关的第二端的负参考电压对所述有机发光二极管进行电性恢复。
2.一种像素补偿电路，其特征在于，所述像素补偿电路包括：
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数据线；
驱动开关，所述驱动开关包括控制端、第一端及第二端，所述驱动开关的控制端连接所述第一可控开关的第二端；
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驱动开关的第二端，所述有机发光二极管的阴极接地；
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发光控制端，所述第二可控开关的第一端连接一电压端，所述第二可控开关的第二端连接所述驱动开关的第一端；
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二扫描线，所述第三可控开关的第一端连接所述第二可控开关的第一端，所述第三可控开关的第二端连接所述驱动开关的控制端；
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二扫描线，所述第四可控开关的第一端连接所述驱动开关的第一端，所述第四可控开关的第二端连接一参考电压端；
第五可控开关，所述第五可控开关包括控制端、第一端及第二端，所述第五可控开关的控制端连接所述第二扫描线，所述第五可控开关的第一端连接所述驱动开关的第二端，所述第五可控开关的第二端连接所述参考电压端；及
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控制端，所述存储电容的第二端连接所述驱动开关的第二端；
其中，所述第一至第五可控开关及所述驱动开关均为PMOS型薄膜晶体管，所述第一至第三可控开关的控制端、第一端及第二端分别对应所述PMOS型薄膜晶体管的栅极、漏极及源极，所述驱动开关、第四及第五可控开关的控制端、第一端及第二端分别对应所述PMOS型薄膜晶体管的栅极、源极及漏极；
在编程/驱动发光阶段，第二扫描线输出高电平信号，第三可控开关、第四可控开关及第五可控开关均截止，第一扫描线及发光控制线均出低电平信号，驱动开关、第一及第二可控开关均导通，所述第一扫描线逐行开启写入数据信息，有机发光二极管发光；
在电性恢复阶段，所述第二扫描线输出低电平信号，所述第三可控开关、所述第四可控开关及所述第五可控开关均导通，所述第一扫描线及所述发光控制线均输出高电平信号，所述第一可控开关及所述第二可控开关均截止，此时所述驱动开关控制端的电压等于电压端输出的电压，所述驱动开关的第一端及第二端的电压均等于参考电压端输出的负参考电压，所述驱动开关进行电性恢复，同时所述驱动开关的第二端的负参考电压对所述有机发光二极管进行电性恢复。
3.一种扫描驱动电路，其特征在于，所述扫描驱动电路包括如权利要求1所述的像素补偿电路。
4.一种扫描驱动电路，其特征在于，所述扫描驱动电路包括如权利要求2所述的像素补偿电路。
5.一种平面显示装置，其特征在于，所述平面显示装置包括如权利要求1所述的像素补偿电路。
6.一种平面显示装置，其特征在于，所述平面显示装置包括如权利要求2所述的像素补偿电路。
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CN107393477B (zh) 2017-08-24 2019-10-11 深圳市华星光电半导体显示技术有限公司 顶发射amoled像素电路及其驱动方法
TWI652665B (zh) * 2018-02-14 2019-03-01 友達光電股份有限公司 像素驅動電路
KR102584639B1 (ko) * 2018-11-21 2023-10-06 삼성디스플레이 주식회사 표시 장치의 픽셀 회로
US11442572B2 (en) 2019-10-17 2022-09-13 Samsung Electronics Co., Ltd. Touch display controller and touch display system including the same
CN110827757A (zh) * 2019-10-28 2020-02-21 福建华佳彩有限公司 Oled电路补偿方法
CN111312170A (zh) * 2019-11-13 2020-06-19 武汉华星光电半导体显示技术有限公司 像素驱动电路及显示装置
CN112116899A (zh) * 2020-10-12 2020-12-22 北京集创北方科技股份有限公司 驱动装置及电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101236724A (zh) * 2008-02-29 2008-08-06 上海广电光电子有限公司 通过数据写入实现负脉冲退火的方法、装置及其驱动电路
CN201266474Y (zh) * 2008-09-27 2009-07-01 上海广电光电子有限公司 一种有源驱动有机发光显示器件
CN101916533A (zh) * 2010-05-19 2010-12-15 友达光电股份有限公司 有机发光显示器及其驱动方法
EP2736037A1 (en) * 2012-11-27 2014-05-28 LG Display Co., Ltd. Organic light emitting diode display device and method of driving the same
CN103871359A (zh) * 2012-12-13 2014-06-18 乐金显示有限公司 有机发光显示器
CN104680978A (zh) * 2015-03-03 2015-06-03 友达光电股份有限公司 一种用于高分辨率amoled的像素补偿电路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI276029B (en) * 2005-11-28 2007-03-11 Chi Mei El Corp Organic light-emitting display and voltage-driven organic light-emitting pixel
TWI343042B (en) * 2006-07-24 2011-06-01 Au Optronics Corp Light-emitting diode (led) panel and driving method thereof
JP2009276744A (ja) * 2008-02-13 2009-11-26 Toshiba Mobile Display Co Ltd Ｅｌ表示装置
CA2631683A1 (en) * 2008-04-16 2009-10-16 Ignis Innovation Inc. Recovery of temporal non-uniformities in active matrix displays
KR101125571B1 (ko) * 2010-02-05 2012-03-22 삼성모바일디스플레이주식회사 화소, 이를 이용한 표시 장치 및 그 구동 방법
CN103021338B (zh) 2012-12-24 2015-08-05 北京京东方光电科技有限公司 像素电路及其驱动方法、显示装置
CN103996379B (zh) * 2014-06-16 2016-05-04 深圳市华星光电技术有限公司 有机发光二极管的像素驱动电路及像素驱动方法
CN104269133B (zh) * 2014-09-25 2016-07-06 合肥鑫晟光电科技有限公司 一种像素电路及有机电致发光显示面板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101236724A (zh) * 2008-02-29 2008-08-06 上海广电光电子有限公司 通过数据写入实现负脉冲退火的方法、装置及其驱动电路
CN201266474Y (zh) * 2008-09-27 2009-07-01 上海广电光电子有限公司 一种有源驱动有机发光显示器件
CN101916533A (zh) * 2010-05-19 2010-12-15 友达光电股份有限公司 有机发光显示器及其驱动方法
EP2736037A1 (en) * 2012-11-27 2014-05-28 LG Display Co., Ltd. Organic light emitting diode display device and method of driving the same
CN103871359A (zh) * 2012-12-13 2014-06-18 乐金显示有限公司 有机发光显示器
CN104680978A (zh) * 2015-03-03 2015-06-03 友达光电股份有限公司 一种用于高分辨率amoled的像素补偿电路

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