CN112908262B - 有机发光显示装置及其驱动方法 - Google Patents

有机发光显示装置及其驱动方法 Download PDF

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CN112908262B
CN112908262B CN202011345619.8A CN202011345619A CN112908262B CN 112908262 B CN112908262 B CN 112908262B CN 202011345619 A CN202011345619 A CN 202011345619A CN 112908262 B CN112908262 B CN 112908262B
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transistor
organic light
light emitting
display device
driving
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CN112908262A (zh
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曺景铉
高在德
韩成檍
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LG Display Co Ltd
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  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

本发明涉及一种有机发光显示装置及其驱动方法，能够检测扫描晶体管和感测晶体管同时操作的有机发光显示装置中的扫描晶体管中的缺陷。有机发光显示装置包括：设置在子像素中的OLED；电连接在OLED与驱动电压线之间的驱动晶体管；电连接在向驱动晶体管施加数据电压的第一节点与数据线之间的扫描晶体管；电连接在位于驱动晶体管和OLED之间的第二节点与基准电压线之间的感测晶体管；和缺陷检测器，用于在扫描晶体管和感测晶体管都截止的状态下施加数据电压，然后检测充入OLED的寄生电容器中的电荷量，以确定设置在子像素中的扫描晶体管是否有缺陷。本发明能够检测由于异物而导致的在子像素中包括的扫描晶体管中的缺陷。

Description

有机发光显示装置及其驱动方法
技术领域
本发明涉及一种有机发光显示装置及其驱动方法，更具体地，涉及一种能够检测有机发光显示装置中的扫描晶体管中的缺陷的有机发光显示装置及其驱动方法，其中在有机发光显示装置中扫描晶体管和感测晶体管被同时驱动。
背景技术
随着信息社会的发展，对显示图像的显示装置的各种需求逐渐增加，并且诸如液晶显示器、等离子体显示面板和有机发光显示装置之类的各种显示装置得到使用。
在这些显示装置之中，使用自发光的有机发光二极管(OLED)的有机发光显示装置具有高响应速度、高动态范围、高发光效率、高亮度和宽视角的优点。
这种有机发光显示装置具有用于显示图像的子像素并且通过根据数据的灰度级控制经由扫描信号选择的子像素的亮度来显示图像，其中子像素包括OLED和驱动OLED的驱动晶体管并且子像素以矩阵形式布置。
除了OLED和驱动晶体管以外，每个子像素还包括：扫描晶体管，扫描晶体管通过扫描信号操作并且控制施加至驱动晶体管的数据电压；电容器，电容器用于将施加至驱动晶体管的数据电压保持一帧；连接至基准电压线的感测晶体管等。
由于异物，在设置于子像素中的前述电路元件中可能产生缺陷，包括有缺陷电路元件的子像素可表现为亮点或暗点。
因此，需要用于检测设置在每个子像素中的电路元件中的缺陷的方法。然而，存在以下问题：不能正确地检测包括有缺陷电路元件的子像素的坐标，以及不能正确地确定设置在子像素中的电路元件之中的有缺陷电路元件。
特别是，需要这样一种方法：用于检测在有机发光显示装置出货之后产生的电路元件中的缺陷，并且提供与被检测为有缺陷电路元件的电路元件和包括有缺陷电路元件的子像素的坐标有关的信息。
发明内容
本发明的一个目的是提供一种能够检测由于异物而导致的设置在每个子像素中的晶体管中的缺陷的显示装置及其驱动方法。
本发明的另一个目的是提供一种能够正确地提取被检测为有缺陷晶体管的晶体管所处的坐标的显示装置及其驱动方法。
为了实现上述目的，根据本发明的有机发光显示装置包括：设置在子像素中的有机发光二极管(OLED)；电连接在所述有机发光二极管与驱动电压线之间的驱动晶体管；电连接在第一节点与数据线之间的扫描晶体管，其中所述第一节点向所述驱动晶体管施加数据电压；电连接在第二节点与基准电压线之间的感测晶体管，其中所述第二节点设置在所述驱动晶体管与所述有机发光二极管之间；和缺陷检测器，所述缺陷检测器用于在所述扫描晶体管和所述感测晶体管都截止的状态下施加所述数据电压，然后检测充入所述有机发光二极管的寄生电容器中的电荷量，以确定设置在所述子像素中的扫描晶体管是否有缺陷。
在根据本发明的有机发光显示装置中，所述扫描晶体管和所述感测晶体管可同时导通或同时截止。
在根据本发明的有机发光显示装置中，当施加所述数据电压时，充入所述有机发光二极管的寄生电容器中的电荷量可与从所述驱动晶体管提供的电流量成比例，其中即使所述扫描晶体管截止，所述驱动晶体管仍通过施加至所述驱动晶体管的栅极电极的漏电流而导通。
在根据本发明的有机发光显示装置中，在所述扫描晶体管和所述感测晶体管都截止的状态下通过所述数据线提供的数据电压可高于0V。
在根据本发明的有机发光显示装置中，当向所述数据线施加0V的电压时，所述缺陷检测器可在所述感测晶体管导通的时间段中检测充入所述有机发光二极管的寄生电容器中的电流量。
在根据本发明的有机发光显示装置中，所述缺陷检测器可包括：电流比较器，所述电流比较器用于将充入所述有机发光二极管的寄生电容器中的电流量与基准值进行比较；和模数转换器，所述模数转换器用于将所述电流比较器的输出结果转换为数字信号。
在根据本发明的有机发光显示装置中，所述电流比较器可包括：运算放大器，所述运算放大器通过反相输入端接收与充入所述有机发光二极管的寄生电容器中的电荷量对应的电压值，并且通过非反相输入端接收基准电压；和反馈电容器，所述反馈电容器连接在所述运算放大器的反相输入端和输出端之间。
在根据本发明的有机发光显示装置中，电流传送器可连接至所述运算放大器的反相输入端，其中所述电流传送器将与充入所述有机发光二极管的寄生电容器中的电荷量对应的电流转换为所述电压值。
根据本发明的有机发光显示装置可进一步包括存储器，所述存储器用于存储其中所述扫描晶体管有缺陷的子像素的坐标。
根据本发明的有机发光显示装置可进一步包括时序控制器，所述时序控制器利用存储在所述存储器中的信息将有缺陷子像素处理为暗点。
根据本发明的有机发光显示装置的驱动方法包括：通过向包括有机发光二极管(OLED)的子像素中的同时操作的扫描晶体管和感测晶体管都提供黑数据来进行初始化，以使驱动晶体管截止；通过数据线提供数据电压；和通过使所述扫描晶体管和所述感测晶体管都导通来检测充入所述有机发光二极管的寄生电容器中的电荷量并且确定所述扫描晶体管是否有缺陷。
根据本发明的有机发光显示装置及其驱动方法，通过在设置于子像素中的扫描晶体管和感测晶体管都截止时向数据线施加数据电压、然后确定在OLED的寄生电容器中是否充入电荷，可检测由于异物而导致的设置于子像素中的扫描晶体管中的缺陷。
根据本发明的有机发光显示装置及其驱动方法，通过将包括有缺陷晶体管的子像素的坐标信息存储在存储器中并且将该子像素处理为暗点，可防止由于亮点导致的清晰度劣化。
附图说明
图1是示出根据本发明实施方式的有机发光显示装置的示意性配置的示图。
图2是示出在根据本发明实施方式的有机发光显示装置中，检测设置在子像素中的晶体管中的缺陷的配置的示图。
图3是示出在根据本发明实施方式的有机发光显示装置中，用于检测晶体管中的缺陷的初始化阶段的示图。
图4图解了在根据本发明实施方式的有机发光显示装置中，当施加数据电压以检测晶体管中的缺陷时的操作示例。
图5图解了在根据本发明实施方式的有机发光显示装置中，当向扫描晶体管和感测晶体管施加驱动信号以检测晶体管中的缺陷时的操作示例。
图6是在根据本发明实施方式的有机发光显示装置中，为了检测晶体管中的缺陷而提供给各部件的信号的波形图。
图7是示出根据本发明实施方式的有机发光显示装置的驱动方法的过程的流程图。
具体实施方式
对于说明书中公开的本发明的实施方式来说，为了描述本发明实施方式的目的而举例说明了具体结构和功能描述，但是本发明的实施方式可以以各种形式实施，不应认为是对本发明的限制。
本发明可以以各种方式修改并且具有各种形式，将参照附图详细描述具体实施方式。然而，公开内容不应解释为限于在此阐述的实施方式，而是相反，公开内容覆盖落入实施方式的精神和范围内的所有修改、等同物和可替换方案。
尽管可使用诸如“第一”、“第二”等之类的术语描述各种部件，但这些部件必然不受上面的术语限制。上面的术语仅用于将一个部件与另一个部件区分开。例如，在不背离本发明的范围的情况下，第一部件可被称为第二部件，第二部件可被称为第一部件。
当一元件“接合”或“连接”至另一元件时，应当理解为尽管该元件可直接接合或连接至另一元件，但也可在这两个元件之间存在第三元件。当一元件“直接接合”或“直接连接”至另一元件时，应当理解为在这两个元件之间不存在元件。用于描述元件之间的关系的其他表述，即，“在……之间”、“正好在……之间”、“接近……”、“直接接近……”等应当以相同的方式进行解释。
仅是为了描述具体实施方式而使用了本发明的说明书和权利要求书中使用的术语，但这些术语并不旨在限制本发明的范围。在本发明的说明书和权利要求书中，将进一步理解，术语“包括”和“包含”指定所描述的特征、整体、步骤、操作、元件、部件和/或其组合的存在，但不排除一个或多个其他特征、整体、步骤、操作、元件、部件和/或其组合的存在或添加。
除非有相反定义，否则在此使用的包括技术术语和科技术语在内的所有术语都具有与示例性实施方式所属领域的普通技术人员通常理解的含义相同的含义。将进一步理解，诸如常用字典中定义的术语之类的术语应当解释为具有与相关领域的上下文中的含义一致的含义，不应当以理想化的或过度形式化的含义进行解释，除非本文有明确定义。
同时，当某一实施方式能以不同的方式实现时，具体框中指定的功能或操作可以以与流程图中指定的顺序不同的顺序执行。例如，根据相关的功能或操作，两个连续的框可同时执行或相反地执行。
在以下描述中，形成在显示面板的基板上的像素电路和栅极驱动电路可由n型或p型晶体管实现。例如，晶体管可由MOSFET(金属氧化物半导体场效应晶体管)实现。晶体管是包括栅极、源极和漏极的三电极元件。源极是向晶体管提供载流子的电极。载流子在晶体管中从源极流动。漏极是晶体管中发射载流子的电极。例如，载流子在晶体管中从源极流到漏极。在n型晶体管的情况下，载流子是电子，因而源极电压低于漏极电压，使得电子可从源极流到漏极。由于在n型晶体管中电子从源极流到漏极，因此电流从漏极流到源极。在p型晶体管的情况下，载流子是空穴，因而源极电压高于漏极电压，使得空穴可从源极流到漏极。由于在p型晶体管中空穴从源极流到漏极，因此电流从源极流到漏极。晶体管的源极和漏极不是固定的，可根据所施加的电压互换。
栅极导通电压可以是能够使晶体管导通的栅极信号的电压。栅极截止电压可以是能够使晶体管截止的电压。p型晶体管的栅极导通电压可以是逻辑低电压VL，其栅极截止电压可以是逻辑高电压VH。n型晶体管的栅极导通电压可以是逻辑高电压，其栅极截止电压可以是逻辑低电压。
下文中，将参照附图描述根据本发明的有机发光显示装置及其驱动方法。图1示出了根据本发明的显示装置100的示意性配置。
参照图1，根据本发明实施方式的有机发光显示装置100包括：其中布置有多条栅极线GL(GL1至GLn，n为自然数)、多条数据线DL(DL1至DLm，m为自然数)和多个子像素SP的显示面板110；用于驱动多条栅极线GL的栅极驱动器120；用于驱动多条数据线DL的数据驱动器130；以及用于控制栅极驱动器120和数据驱动器130的时序控制器140。有机发光显示装置100还可包括存储器150。栅极驱动器120通过向多条栅极线GL依次提供扫描信号来依次驱动多条栅极线GL。
栅极驱动器120通过根据时序控制器140的控制向多条栅极线GL依次提供导通电压或截止电压的扫描信号来依次驱动多条栅极线GL。
根据驱动模式，栅极驱动器120可仅位于显示面板110的一侧或位于显示面板110的两侧。
此外，栅极驱动器120可包括一个或多个栅极驱动器集成电路(IC)。
每个栅极驱动器IC可通过带式自动接合(TAB)或玻上芯片(COG)连接至显示面板110的接合焊盘，或者可实现为面板内栅极(GIP)型并且直接设置在显示面板110上。
此外，每个栅极驱动器IC可集成在显示面板110中，或者可实现为安装在与显示面板110连接的膜上的膜上芯片(COF)。
数据驱动器130通过向多条数据线DL提供数据电压来驱动多条数据线DL。
当具体栅极线GL开启时，数据驱动器130将从时序控制器140接收的图像数据Data转换为模拟数据电压并且将模拟数据电压提供至多条数据线DL，以驱动数据线DL。
数据驱动器130可包括至少一个源极驱动器IC，以驱动多条数据线DL。
每个源极驱动器IC可通过TAB或COG连接至显示面板110的接合焊盘，可直接设置在显示面板110中，或者可集成在显示面板110中。
此外，每个源极驱动器IC可实现为COF。在这种情况下，每个源极驱动器IC的一端接合至源极印刷电路板，其另一端接合至显示面板110。
时序控制器140向栅极驱动器120和数据驱动器130提供各种控制信号，以控制栅极驱动器120和数据驱动器130。
时序控制器140以每一帧的时序开始扫描，将外部输入的图像数据转换为数据驱动器130中使用的数据信号格式，输出转换后的图像数据，并且根据扫描在适当时间控制数据驱动。
时序控制器140从外部装置(例如，主机系统)接收包括垂直同步信号Vsync、水平同步信号Hsync、输入数据使能信号DE和时钟信号CLK在内的各种时序信号以及输入的图像数据。
除了将外部输入的图像数据转换为数据驱动器130中使用的数据信号格式并且输出转换后的图像数据的操作以外，时序控制器140还接收诸如垂直同步信号Vsync、水平同步信号Hsync、输入数据使能信号DE和时钟信号CLK之类的时序信号，产生各种控制信号并且将控制信号输出至栅极驱动器120和数据驱动器130，以控制栅极驱动器120和数据驱动器130。
例如，时序控制器140输出包括栅极起始脉冲信号GSP、栅极移位时钟信号GSC和栅极输出使能信号GOE在内的各种栅极控制信号GCS，以便控制栅极驱动器120。
在此，栅极起始脉冲信号GSP控制构成栅极驱动器120的一个或多个栅极驱动器IC的操作起始时序。栅极移位时钟信号GSC是共同地输入至一个或多个栅极驱动器IC的时钟信号并且控制扫描信号(栅极脉冲)移位时序。栅极输出使能信号GOE指定一个或多个栅极驱动器IC的时序信息。
此外，时序控制器140输出包括源极起始脉冲信号SSP、源极采样时钟信号SSC和源极输出使能信号SOE在内的各种数据控制信号DCS，以便控制数据驱动器130。
在此，源极起始脉冲信号SSP控制构成数据驱动器130的一个或多个源极驱动器IC的数据采样起始时序。源极采样时钟信号SSC是用于控制每个源极驱动器IC中的数据采样时序的时钟信号。源极输出使能信号SOE控制数据驱动器130的输出时序。
时序控制器140可设置在控制印刷电路板上，控制印刷电路板通过诸如柔性扁平电缆(FFC)或柔性印刷电路(FPC)之类的连接介质连接至接合有源极驱动器IC的源极印刷电路板。
控制印刷电路板可进一步包括设置在其上的电源控制器(未示出)，电源控制器向显示面板110、栅极驱动器120和数据驱动器130提供各种电压或电流，或者控制要提供至这些部件的各种电压或电流。电源控制器也可被称为电源管理IC。设置在显示装置100的显示面板110中的子像素可包括诸如晶体管和电容器之类的电路元件，当显示装置100是有机发光显示装置时，每个子像素可包括诸如OLED、两个或更多个晶体管和至少一个电容器之类的电路元件。
可根据电路元件提供的功能和电路元件设计方法以各种方式确定用于构成每个子像素的电路元件的类型和数量。
图2是示出在根据本发明实施方式的有机发光显示装置中，检测设置在子像素中的晶体管中的缺陷的配置的示图。参照图2，每个子像素包括：OLED；电连接在OLED与驱动电压线DVL之间的驱动晶体管DT；扫描晶体管T1，扫描晶体管T1电连接在第一节点N1(经由第一节点N1向驱动晶体管DT施加数据电压Vdata)与数据线DL之间；感测晶体管T2，感测晶体管T2连接至位于驱动晶体管DT与OLED之间的第二节点N2并且用于感测子像素中包括的诸如OLED或驱动晶体管DT之类的电路元件的劣化；和缺陷检测器200，缺陷检测器200在扫描晶体管T1和感测晶体管T2都截止的状态下施加数据电压，然后检测充入OLED的寄生电容器COLED中(见图4)的电荷量，从而确定设置在子像素中的扫描晶体管T1是否有缺陷。
OLED包括第一电极(例如，阳极电极或阴极电极)、有机层和第二电极(例如，阴极电极或阳极电极)。OLED的第一电极可连接至驱动晶体管DT的第二节点N2，并且地电压EVSS可施加至OLED的第二电极。
驱动晶体管DT向OLED提供驱动电流以驱动OLED，驱动晶体管DT包括对应于栅极节点的第一节点N1、对应于源极节点的第二节点N2、和被施加高电压EVDD的漏极节点。
驱动电压EVDD可施加至驱动电压线DVL并且地电压EVSS可施加至OLED的第二电极。
扫描晶体管T1将数据电压传送至驱动晶体管DT的第一节点N1。扫描晶体管T1可电连接在驱动晶体管DT的第一节点N1与数据线DL之间并且通过施加至其栅极节点的扫描信号SCAN导通，从而将数据电压传送至驱动晶体管DT的第一节点N1。
存储电容器Cst电连接在驱动晶体管DT的第一节点N1和第二节点N2之间。
存储电容器Cst电连接在驱动晶体管DT的第一节点N1和第二节点N2之间，以将具体电压保持一帧。
感测晶体管T2可用于根据所施加的感测信号SEN感测子像素中包括的诸如OLED或驱动晶体管DT之类的电路元件的劣化。
因此，设置在子像素中的前述晶体管需要进行相应操作，使得子像素中包括的OLED能够根据数据正确地呈现灰度级。
缺陷检测器200包括：电流比较器210，电流比较器210将充入OLED的寄生电容器COLED中的电流量与基准值进行比较；和模数转换器ADC 220，模数转换器ADC 220将电流比较器210的输出结果转换为数字信号。
此外，电流比较器210包括：运算放大器OP，运算放大器OP通过反相输入端接收与充入OLED的寄生电容器COLED中的电荷量对应的电压值，并且通过非反相输入端接收基准电压Vref；和反馈电容器CFB，反馈电容器CFB连接在OP的反相输入端和输出端之间。
电流传送器conv 211连接至OP的反相输入端，电流传送器211将与充入OLED的寄生电容器COLED中的电荷量对应的电流转换为电压值。
在根据本发明的有机发光显示装置中，扫描晶体管T1和感测晶体管T2被提供相同的逻辑电压或相反的电压，使得它们同时导通或截止。例如，这两个晶体管之一可配置为n型或p型晶体管，或者这两个晶体管可配置为n型或p型晶体管。
当由于异物而在扫描晶体管中产生缺陷时，产生具有不同亮度的亮点缺陷子像素。本发明提供一种用于检测前述子像素结构中的扫描晶体管T1中的缺陷的方法、以及用于使用该方法正确地检测包括有缺陷晶体管的子像素的坐标的方法。
图3是示出在根据本发明实施方式的显示装置中，用于检测晶体管中的缺陷的初始化阶段的示图，图4图解了在根据本发明实施方式的显示装置中，当施加数据电压以检测晶体管中的缺陷时的操作示例，图5图解了在根据本发明实施方式的显示装置中，当向扫描晶体管和感测晶体管施加驱动信号以检测晶体管中的缺陷时的操作示例，图6是在根据本发明实施方式的显示装置中，为了检测晶体管中的缺陷而提供给各部件的信号的波形图。在图6中，SCAN表示扫描信号的电压，SAM表示采样信号SAM的电压。
首先，在初始化时段t1中，向同时操作的扫描晶体管T1和感测晶体管T2提供黑数据，例如，“0”V的Vdata，如图3中所示。在此初始化阶段，低逻辑电压VL施加至驱动晶体管DT的栅极电极，使得驱动晶体管DT截止。因此，没有电流流到OLED的寄生电容器COLED，因而充入寄生电容器中的电流量(电荷量)为“0”。
在此初始化状态下，在第二时段t2中非常高的电压(例如，14V)施加至用于提供数据电压Vdata的数据线DL，如图4中所示。如果扫描晶体管T1处于正常状态，则即使通过漏极电极提供高电压，也不会通过扫描晶体管T1的源极电极提供电流。
然而，当扫描晶体管T1有缺陷时，由于漏电流而导致通过扫描晶体管T1的源极电极提供电流。因此，与驱动晶体管DT的栅极电极连接的第一节点的电位增加，因而驱动晶体管DT导通。因为感测晶体管T2截止，所以通过驱动晶体管DT的源极电极提供的电流被充入OLED的寄生电容器COLED中。在此，充电量与从驱动晶体管(即使扫描晶体管截止仍通过施加至驱动晶体管的栅极电极的漏电流而导通)提供的电流量成比例。
在这种状态下，当在感测时段t3中提供采样信号SAM时，缺陷检测器200进行操作，使得通过数据线施加0V并且扫描晶体管T1和感测晶体管T2导通(从关到开)。在此，充入OLED的寄生电容器COLED中的电荷被提供至缺陷检测器200，如图5中所示。
充入OLED的寄生电容器COLED中的电荷通过电流传送器211转换为电压值并且传送至OP的反相输入端。OP将位于该电压值与施加至非反相输入端的基准电压Vref之间的差放大，并且通过输出端输出放大后的电压。通过OP的输出端输出的值通过ADC 220转换为数字信号。此数字信号传输至时序控制器140。时序控制器140识别相应子像素的坐标并且将坐标存储在存储器150中，使得该子像素被处理为暗点。
图7是示出根据本发明实施方式的显示装置的驱动方法的过程的流程图。在初始化时段t1中同时操作的扫描晶体管T1和感测晶体管T2导通，并且通过数据线DL提供0V的黑数据。因此，驱动晶体管DT截止，因而与驱动晶体管DT的栅极电极和源极电极连接的节点N1和N2的电位被初始化(步骤S701)。
在扫描晶体管T1和感测晶体管T2都截止的状态下，通过数据线DL提供非常高的数据电压(高于0V的电压)。如果扫描晶体管T1正常，则驱动晶体管DT保持截止状态。然而，如果扫描晶体管T1异常，则由于漏电流，与驱动晶体管DT的栅极电极连接的第一节点N1的电位增加，从而导致驱动晶体管DT导通。因此，通过驱动晶体管DT的漏极电极提供驱动电压VDD。由于驱动晶体管DT导通，所以通过源极电极提供的电流被充入OLED的寄生电容器COLED中(步骤S702)。
在扫描晶体管T1和感测晶体管T2都导通的同时提供用于驱动缺陷检测器200的采样信号，以检查通过缺陷检测器200是否检测到电流(步骤S703)。
如果在OLED的寄生电容器COLED中没有充入电荷，则扫描晶体管T1正常，因为通过缺陷检测器200的电流比较器210输出的电压不对应于基准值。然而，当扫描晶体管T1有缺陷时，由于漏电流而充入OLED的寄生电容器COLED的电荷通过电流比较器210输出为预定值。这个值通过ADC 220转换为数字信号并且传输至时序控制器140。时序控制器140将相应子像素的坐标信息存储在存储器150中(步骤S704)。
由于具有有缺陷扫描晶体管T1的子像素作为亮点操作，因此时序控制器140从存储器150读取与该子像素有关的信息并且将该子像素处理为暗点，从而不向该子像素提供数据电压(步骤S705)。
如上所述，本发明通过在子像素中包括的扫描晶体管和感测晶体管都截止时向数据线施加高数据电压，然后确定在OLED的寄生电容器中是否充入电荷，能够检测由于异物而导致的子像素中包括的扫描晶体管中的缺陷。
在不背离本发明的精神或范围的情况下可在本发明中进行各种修改和变化，这对于所属领域技术人员将是显而易见的。因而，本发明旨在覆盖落入所附权利要求书范围及其等同范围内的对本发明的修改和变化。

Claims (13)

1.一种有机发光显示装置，包括：
设置在子像素中的有机发光二极管；
电连接在所述有机发光二极管与驱动电压线之间的驱动晶体管；
电连接在第一节点与数据线之间的扫描晶体管，其中所述第一节点向所述驱动晶体管施加数据电压；
电连接在第二节点与基准电压线之间的感测晶体管，其中所述第二节点设置在所述驱动晶体管与所述有机发光二极管之间；和
缺陷检测器，所述缺陷检测器用于在所述扫描晶体管和所述感测晶体管都截止的状态下施加所述数据电压，然后检测充入所述有机发光二极管的寄生电容器中的电荷量，以确定设置在所述子像素中的扫描晶体管是否有缺陷，
其中在所述扫描晶体管和所述感测晶体管都截止的状态下通过所述数据线提供的数据电压高于0V，以及
其中在向所述数据线施加0V的电压时，所述缺陷检测器在所述感测晶体管导通的时间段中检测充入所述有机发光二极管的寄生电容器中的电流量。
2.根据权利要求1所述的有机发光显示装置，其中所述扫描晶体管和所述感测晶体管同时导通或同时截止。
3.根据权利要求1所述的有机发光显示装置，其中在施加所述数据电压时，充入所述有机发光二极管的寄生电容器中的电荷量与从所述驱动晶体管提供的电流量成比例，其中即使所述扫描晶体管截止，所述驱动晶体管仍通过施加至所述驱动晶体管的栅极电极的漏电流而导通。
4.根据权利要求1所述的有机发光显示装置，其中所述缺陷检测器包括：
电流比较器，所述电流比较器用于将充入所述有机发光二极管的寄生电容器中的电流量与基准值进行比较；和
模数转换器，所述模数转换器用于将所述电流比较器的输出结果转换为数字信号。
5.根据权利要求4所述的有机发光显示装置，其中所述电流比较器包括：
运算放大器，所述运算放大器通过反相输入端接收与充入所述有机发光二极管的寄生电容器中的电荷量对应的电压值，并且通过非反相输入端接收基准电压；和
反馈电容器，所述反馈电容器连接在所述运算放大器的反相输入端和输出端之间。
6.根据权利要求5所述的有机发光显示装置，其中所述电流比较器还包括电流传送器，所述电流传送器连接至所述运算放大器的反相输入端，其中所述电流传送器将与充入所述有机发光二极管的寄生电容器中的电荷量对应的电流转换为所述电压值。
7.根据权利要求1所述的有机发光显示装置，还包括存储器，所述存储器用于存储其中所述扫描晶体管有缺陷的子像素的坐标。
8.根据权利要求7所述的有机发光显示装置，还包括时序控制器，所述时序控制器利用存储在所述存储器中的信息将有缺陷的子像素处理为暗点。
9.一种有机发光显示装置的驱动方法，包括：
通过向包括有机发光二极管的子像素中的同时操作的扫描晶体管和感测晶体管都提供黑数据来进行初始化，以使驱动晶体管截止；
通过数据线提供数据电压；和
通过使所述扫描晶体管和所述感测晶体管都导通来检测充入所述有机发光二极管的寄生电容器中的电荷量并且确定所述扫描晶体管是否有缺陷，
其中当向所述数据线施加0V的数据电压时，在其中所述感测晶体管导通的时间段中检测充入所述有机发光二极管的寄生电容器中的电荷量。
10.根据权利要求9所述的驱动方法，其中在施加所述数据电压时，充入所述有机发光二极管的寄生电容器中的电荷量与从所述驱动晶体管提供的电流量成比例，其中即使所述扫描晶体管截止，所述驱动晶体管仍通过施加至所述驱动晶体管的栅极电极的漏电流而导通。
11.根据权利要求9所述的驱动方法，其中通过所述数据线提供的数据电压高于0V。
12.根据权利要求9所述的驱动方法，其中检测充入所述有机发光二极管的寄生电容器中的电荷量包括：利用电流比较器将充入所述有机发光二极管的寄生电容器中的电流量与基准值进行比较。
13.根据权利要求9所述的驱动方法，还包括：
将其中所述扫描晶体管有缺陷的子像素的坐标存储在存储器中；和
将与存储在所述存储器中的坐标对应的有缺陷的子像素处理为暗点。
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102702446B1 (ko) * 2019-12-16 2024-09-04 엘지디스플레이 주식회사 표시장치와 그 구동 방법
TWI800166B (zh) * 2021-12-17 2023-04-21 聚積科技股份有限公司 具短路偵測功能的掃描式顯示器及其資料裝置
TWI804112B (zh) * 2021-12-17 2023-06-01 聚積科技股份有限公司 具短路偵測功能的掃描式顯示器及其資料裝置
TWI799015B (zh) * 2021-12-17 2023-04-11 聚積科技股份有限公司 具短路偵測功能的掃描式顯示器及其掃描裝置
KR20230103560A (ko) * 2021-12-31 2023-07-07 엘지디스플레이 주식회사 발광표시장치 및 이의 구동방법
CN116543704B (zh) * 2023-07-07 2023-09-01 惠科股份有限公司 补偿电路、补偿方法和显示面板

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104424893A (zh) * 2013-08-30 2015-03-18 乐金显示有限公司 有机发光显示设备
CN105321456A (zh) * 2014-07-10 2016-02-10 乐金显示有限公司 能够感测有机发光二极管退化的有机发光显示器
KR20170081020A (ko) * 2015-12-31 2017-07-11 엘지디스플레이 주식회사 유기발광 다이오드의 열화 센싱 방법
KR20180025798A (ko) * 2016-08-29 2018-03-09 엘지디스플레이 주식회사 표시장치 및 표시장치의 구동 방법
CN107799061A (zh) * 2016-08-30 2018-03-13 乐金显示有限公司 数据驱动器、有机发光显示装置及其驱动方法
CN107799040A (zh) * 2016-08-31 2018-03-13 乐金显示有限公司 有机发光显示面板、有机发光显示装置及短路检测方法
CN107799060A (zh) * 2016-08-31 2018-03-13 乐金显示有限公司 有机发光显示器及其劣化感测方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9672947B2 (en) * 2004-11-15 2017-06-06 Atomic Energy Of Canada Limited Finned strainer
JP2008203478A (ja) * 2007-02-20 2008-09-04 Sony Corp 表示装置とその駆動方法
US9236011B2 (en) * 2011-08-30 2016-01-12 Lg Display Co., Ltd. Organic light emitting diode display device for pixel current sensing in the sensing mode and pixel current sensing method thereof
US10062326B2 (en) * 2014-03-31 2018-08-28 Sharp Kabushiki Kaisha Display device and method for driving same
US9721502B2 (en) * 2014-04-14 2017-08-01 Apple Inc. Organic light-emitting diode display with compensation for transistor variations
KR20160007900A (ko) * 2014-07-09 2016-01-21 삼성디스플레이 주식회사 화소, 화소 구동 방법, 및 화소를 포함하는 표시 장치
KR102208993B1 (ko) * 2014-09-01 2021-01-29 엘지디스플레이 주식회사 터치 감지 기능을 포함하는 유기발광 표시장치
KR102233719B1 (ko) 2014-10-31 2021-03-30 엘지디스플레이 주식회사 유기 발광 다이오드 표시 장치 및 그 구동 방법
KR101789602B1 (ko) 2014-12-31 2017-10-26 엘지디스플레이 주식회사 유기발광 표시장치 및 그의 구동 방법
KR102390474B1 (ko) 2015-08-20 2022-04-26 엘지디스플레이 주식회사 전류 센싱형 보상장치와 그를 포함한 유기발광 표시장치
CN109935212A (zh) * 2019-02-28 2019-06-25 合肥京东方卓印科技有限公司 显示面板、显示装置及驱动方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104424893A (zh) * 2013-08-30 2015-03-18 乐金显示有限公司 有机发光显示设备
CN105321456A (zh) * 2014-07-10 2016-02-10 乐金显示有限公司 能够感测有机发光二极管退化的有机发光显示器
KR20170081020A (ko) * 2015-12-31 2017-07-11 엘지디스플레이 주식회사 유기발광 다이오드의 열화 센싱 방법
KR20180025798A (ko) * 2016-08-29 2018-03-09 엘지디스플레이 주식회사 표시장치 및 표시장치의 구동 방법
CN107799061A (zh) * 2016-08-30 2018-03-13 乐金显示有限公司 数据驱动器、有机发光显示装置及其驱动方法
CN107799040A (zh) * 2016-08-31 2018-03-13 乐金显示有限公司 有机发光显示面板、有机发光显示装置及短路检测方法
CN107799060A (zh) * 2016-08-31 2018-03-13 乐金显示有限公司 有机发光显示器及其劣化感测方法

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