CN109949746B - 电致发光显示器及其驱动方法 - Google Patents

电致发光显示器及其驱动方法 Download PDF

Info

Publication number
CN109949746B
CN109949746B CN201811348662.2A CN201811348662A CN109949746B CN 109949746 B CN109949746 B CN 109949746B CN 201811348662 A CN201811348662 A CN 201811348662A CN 109949746 B CN109949746 B CN 109949746B
Authority
CN
China
Prior art keywords
pixel
value
compensation
current
data
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.)
Active
Application number
CN201811348662.2A
Other languages
English (en)
Other versions
CN109949746A (zh
Inventor
安珠永
朴效廷
李在珹
吴义烈
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.)
LG Display Co Ltd
Original Assignee
LG Display 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 LG Display Co Ltd filed Critical LG Display Co Ltd
Publication of CN109949746A publication Critical patent/CN109949746A/zh
Application granted granted Critical
Publication of CN109949746B publication Critical patent/CN109949746B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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]
    • G09G3/3275—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • 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
    • 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
    • G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
    • 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
    • G09G2300/0828—Several active elements per pixel in active matrix panels forming a digital to analog [D/A] conversion 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
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/0257—Reduction of after-image effects
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

本发明公开了一种电致发光显示器及其驱动方法，所述方法包括：通过积累每个像素处的输入图像的像素数据来产生预测值，该预测值指示像素的退化程度；通过调节所述预测值到测量与所述像素相连的电力线中的电流所获得的电流测量值来产生补偿值。通过用所述补偿值调制所述像素数据来产生补偿数据，该补偿数据将被写入每个像素。

Description

电致发光显示器及其驱动方法
本申请要求2017年11月30日提交的韩国专利申请No.10-2017-0163109的权益，该申请的全部内容实际上通过引用结合于此，如同在这里完全被阐述一样。
技术领域
本公开涉及一种电致发光显示器，其包括用于驱动像素的驱动装置。
背景技术
电致发光显示器根据发光层的材料分为无机发光显示器和有机发光显示器。有源矩阵型有机发光显示器包括有机发光二极管(OLED)，具有快响应速度和宽视角，并产生具有高发光效率的亮度。
有机发光显示器的每个像素都包括OLED和根据栅源电压向OLED提供电流从而驱动OLED的驱动装置。有机发光显示器的OLED包括阳极、阴极和形成在阳极和阴极之间的有机化合物层。有机化合物层由层叠在阳极和阴极之间的空穴注入层HIL、空穴输运层HTL、发射层EML、电子输运层ETL、和电子注入层EIL构成。如果电流流入OLED，则流过HTL的空穴和流过ETL的电子移动到EML，形成激子，从而EML产生可见光。
驱动装置可以实现为具有金属氧化物半导体场效应晶体管(MOSFET)结构的薄膜晶体管(TFT)。希望设计出的驱动装置在所有的像素中具有均匀电学性能(诸如阈值电压和迁移率)。然而，由于工艺偏差和装置性能偏差之故，像素之间驱动装置的电学性能会有差别。驱动装置的电学性能会随着显示器的驱动时间的流逝而变化。驱动装置的电学性能的这种变化会在有机发光显示器的屏幕中引起残留影像。
为了对驱动装置的电学性能偏差进行补偿，可以将内补偿电路或外补偿电路应用到有机发光显示器。内补偿电路嵌植在每个像素中，对驱动装置的随驱动装置的电学性能而变化的阈值电压Vth进行采样，并补偿驱动装置的栅源电压与阈值电压Vth同样多。外补偿电路感测根据驱动装置的电学性能而变化的像素的电流或电压，基于感测到的电流或电压，外补偿电路对输入图像的数据进行调制，从而对像素之间驱动装置的电学性能的偏差进行补偿。
发明内容
为了实现外补偿电路，需要有分别连接到像素的感测线、用于切换感测线的感测晶体管、用于切换感测路径的切换电路、用于将感测电压转换为数字数据的模拟-数字转换器(ADC)、感测电压源等。由于外补偿电路之故，像素开口率减小了。
不使用感测电路而估计像素的退化是可能的，但这会减小电学性能退化程度的补偿精度。
因此，本发明提供了一种电致发光显示器及其驱动方法，能够精确地补偿像素的退化程度。
本发明所述的电致发光显示器包括：显示面板，具有彼此交叉的数据线和扫描线、以及设置其上的多个像素；补偿装置，通过积累每个像素处的输入图像的像素数据来产生预测值，该预测值指示像素的退化程度；通过调节所述预测值到测量与所述像素相连的电力线中的电流所获得的电流测量值来产生补偿值；以及通过用所述补偿值调制所述像素数据来产生补偿数据；以及显示面板驱动电路，将所述补偿数据写入所述像素。
一种电致发光显示器的驱动方法，该方法包括：通过积累每个像素处的输入图像的像素数据来产生预测值，该预测值指示像素的退化程度；通过调节所述预测值到测量与所述像素相连的电力线中的电流所获得的电流测量值来产生补偿值；通过用所述补偿值调制所述像素数据来产生补偿数据；以及将所述补偿数据写入显示面板的每个像素。
附图说明
附图用来提供对本发明的进一步理解，其结合在这里并构成说明书的一部分，示出了本发明的实施例，并同说明书一起用来说明本发明的原理。在附图中：
图1是框图，示出了本发明的一个实施例所述的电致发光显示器；
图2详细示出了图1所示的补偿装置；
图3示出了图1所示的测量单元和像素电路；以及
图4详细示出了图2所示的预测单元和调节单元。
具体实施方式
从下面结合附图描述的实施例中，本公开的优点和特征以及实现这些优点和特征的方法变得很显然。然而，本公开不限于这些实施例，可以以各种变型来实施。提供这些实施例仅是充分公开本发明，并为本发明所属领域的技术人员提供建议。本公开仅通过所附权利要求来限定。在整个说明书中，相同的附图标记指示相同的元件。
附图中所公开的形状、尺寸、比例、角度、数目等是示例性的，实施例不限于此。在整个说明书中，相同的附图标记指示相同的元件。在下面的实施例的说明中，当确定实施例的要旨会被不必要地模糊时，会省略已知现有技术的详细描述。
在本说明书中使用术语“包括”、“具有”等的情形中，除非使用了“仅”，否则可以添加其他部件。如这里所使用的，单数形式意在也包括复数形式，除非上下文清楚地说明并非如此。
在描述构成元件时，解释为包括误差范围，即使没有单独的描述也是如此。
在位置关系的描述中，例如，如果两个部件之间的位置关系描述为“在…上”、“在…之上”、“在…之下”或“挨着”，那么，除非使用术语“紧接地”或“直接地”，否则在两部件之间可以布置一个或多个其他部件。
在此使用诸如第一、第二等术语来描述各种组件，但这些组件不由这些术语限定。这些术语仅用于将一个组件与其他组件区分开。因此，在实施例的技术精神范围内，下面所提及的第一组件可以是第二组件。
应该明白，各个实施例的特征可以部分或全部地相互耦合或结合，并且从技术上讲，各种联锁或驱动也是可能的，并且这些实施例可以彼此独立地实施。
下面将结合附图描述本公开的各种实施例。在这些实施例中，电致发光显示器被描述为包括有机发光材料的有机发光显示器，但本公开的各方面不限于此。
图1是框图，示出了本发明的一个实施例所述的电致发光显示器，图2详细示出了图1所示的补偿装置，图3示出了图1所示的测量单元和像素电路。
参看图1和图2，本发明的一个实施例所述的电致发光显示器包括显示面板100；将输入图像的数据写入显示面板100的像素中的显示面板驱动电路，其包括数据驱动器110和扫描驱动器120；用于控制显示面板驱动电路的时序控制器130；通过调制输入图像的像素数据对每个像素的退化进行补偿的补偿装置200。时序控制器130和补偿装置200可以集成到一个IC芯片中。
显示面板100的屏幕包括显示输入图像的有源区AA。在有源区AA中排列有像素阵列。像素阵列包括多个数据线102、与所述数据线相交的多个扫描线104、以及以矩阵形式排列的像素。
为了实现现有的外补偿电路，显示面板需要与像素相连的感测线、以及用于切换像素的感测晶体管。外补偿电路还需要用于切换感测路径的切换电路、用于将感测电压转换为数字数据的模拟-数字转换器(ADC)、感测电压源等。与此相比，本发明预测每个像素的退化程度、利用在显示面板的电力线上测量的实际电流精确地校正预测值。因此，在本发明中就从显示面板中去掉了感测线和感测晶体管，从而增加了像素开口率。另外，也可以从外补偿电路去掉用于切换感测路径的切换电路、用于将感测电压转换为数字数据的ADC、感测电压源等。
每个像素可以分成红色子像素、绿色子像素和蓝色子像素，以实现颜色。每个像素还可以包括其他颜色(包括白色)的子像素。在下文中，“像素”也可以解释为子像素。每个子像素101可以实现为具有最小配置、没有内补偿电路的像素电路，如图3所示。
像素电路包括第一薄膜晶体管(TFT)T1、第二TFT T2、OLED、电容器Cst，如图3所示。晶体管T1和T2可以用n沟道MOSFET实现为TFT。
第一TFT T1响应扫描信号SCAN而导通，将来自数据线102的数据电压Vdata提供给第二TFT T2的栅极和电容器Cst。第一TFT T1包括与施加有扫描信号的扫描线104相连的栅极、与数据线102相连的漏极、以及与第二TFT T2的栅极相连的源极。
第二TFT T2是驱动装置，用于根据其栅源电压Vgs调节OLED电流来驱动OLED。第二TFT T2包括与第一节点n1连接的栅极、与施加有像素驱动电压VDD的VDD线103相连的漏极、以及与OLED的阳极相连的源极。电容器Cst连接在第二TFT T2的栅极和源极之间，充入数据电压Vdata，以在一帧期间维持第二TFT T2的栅源电压。
触摸传感器可以设置在显示面板100上。可以利用附加的触摸传感器、或者利用像素来感测触摸输入。触摸传感器可以实现为排列在显示面板100的屏幕上的上置式(on-cell type)或外挂式(add-on type)触摸传感器，或者可以是嵌入像素阵列的内置式(in-cell type)触摸传感器。
显示面板驱动电路包括数据驱动器110和扫描驱动器120。在数据驱动器110和数据线102之间可以设置附图中未示出的多路输出选择器。多路输出选择器设置在数据驱动器110和数据线之间，将数据驱动器110输出的数据电压分配到数据线102。由于数据驱动器110的一个通道通过多路输出选择器连接到多个数据线，因此，可以减少数据线102的数目。
在时序控制器130的控制下，显示面板驱动电路将从补偿装置200接收到的补偿数据写入显示面板100的像素中，并在屏幕上显示输入图像。显示面板驱动电路可以进一步包括用于驱动触摸传感器的触摸传感器驱动器。图1省略了触摸传感器驱动器。在移动装置或可穿戴装置中，数据驱动器110、时序控制器130、补偿装置200、以及未示出的电源可以集成到一个集成电路(IC)中。电源产生驱动像素以及显示面板驱动电路所需要的电力。
数据驱动器110接收由补偿装置200调制的补偿数据。数据驱动器110利用数字-模拟转换器(DAC)在每帧期间将输入图像的补偿数据转换成伽马补偿电压，以输出数据电压Vdata。数据电压通过数据线102提供给像素。图3中的附图标记“111”是指数据驱动器110的DAC。
扫描驱动器120可以实现为GIP电路(gate-in-panel circuit)，其连同有源区的晶体管阵列直接形成在显示面板100的边框区。在时序控制器130的控制下，扫描驱动器120将扫描信号输出到扫描线104，其中扫描信号与数据驱动器输出的数据电压同步。扫描驱动器120利用移位寄存器将扫描信号顺序提供给扫描线104。
时序控制器130从未示出的主机***接收输入图像的像素数据和与像素数据同步的时序信号。时序控制器130基于来自主机***的时序信号控制数据驱动器110、扫描驱动器120、以及补偿装置200的工作时序。主机***可以是电视***、机顶盒、导航***、个人电脑(PC)、家庭影院***、移动装置、以及可穿戴装置中的任何一种。
补偿装置200通过在每个像素处积累实时变化的输入图像的像素数据来计算每个像素的消耗量，并基于每个像素的计算出的消耗量预测每个像素的驱动装置的退化。补偿装置200对连接到像素的电力线中流动的电流进行测量。所述电力线可以是与所有像素相连的VDD线103，如图3所示。另外，补偿装置200利用在电力线上所测量的电流和退化预测值可以确定每个像素的补偿程度。补偿装置200通过将最终的补偿值加到输入图像的像素数据来输出补偿数据。补偿数据被传送到数据驱动器110。补偿装置200可以嵌入时序控制器130中。补偿装置200的测量单元206可以实现为时序控制器130中的电流积分器以及ADC。ADC可以安装在数据驱动器110中。
补偿装置200不需要感测电路，其中该感测电路包括连接到显示面板的每个像素的感测线、感测晶体管、感测切换电路等。补偿装置200用每个像素的预测值精确地校正电流，从而能够精确地校正像素的退化。因此，本发明可以增加像素的开口率、减少制造成本、并精确地校正像素的退化，从而能够延长显示器的寿命。
图2详细地示出了图1中所示出的补偿装置。图3示出了图1中所示出的测量单元和像素电路。在图2中，Vimage、ΔVth、Vcompensation是指数字数据。
参看图2和图3，补偿装置200包括预测单元202、测量单元206、调节单元204、以及补偿单元205。
预测单元202接收输入图像的像素数据、积累每个像素处的像素数据、计算每个像素的消耗量、以及预测每个像素的退化程度。预测单元202将每个像素的消耗量转换为阈值电压预测值ΔVth1(其指示每个像素的驱动装置T2的阈值电压的退化程度)，并基于阈值电压预测值ΔVth1根据像素数据预测每个像素的电流IDS1。
电源208通过VDD线103将像素驱动电压VDD提供给测量单元206。测量单元206对连接到像素的VDD线103中流动的电流INET进行测量。如图3所示，测量单元206可以嵌入时序控制器130中。测量单元206所测量的电流INET可以等于屏幕AA的所有像素中实际流动的电流之和。
调节单元204通过反映实际电流来校正预测单元202所计算出的驱动装置的退化程度，并确定补偿值ΔVth。调节单元204所确定的补偿值ΔVth是每个像素的驱动装置T2的阈值电压值的补偿值。补偿单元205通过将补偿值ΔVth加到输入图像的像素数据来输出补偿数据Vcompensation。补偿数据Vcompensation被传送到数据驱动器110。
在另一个实施例中，可以将补偿数据Vcompensation输入到预测单元202。预测单元202通过将实际要施加到像素的补偿数据加到每个像素处输入图像的像素数据Vimage，可以更精确地预测每个像素的退化程度。
图4详细示出了图2所示的预测单元202和调节单元204。
参看图4，预测单元202通过积累每个像素处的输入图像的像素数据来计算每个像素的消耗量。每个像素的像素数据可以积累在存储器中，直到像素的寿命终止，但考虑存储容量可以改变积累时间。预测单元202通过将每个像素的消耗量转换为由公式1表示的每个像素的阈值电压预测值ΔVth1来计算驱动装置的退化量。
【公式1】
ΔVth1＝A(1-exp[-τβ])
其中，A和β是根据显示装置的特性而预置的参数，而τ是每个像素的消耗量。
预测单元202通过将阈值电压预测值ΔVth1代入下面的公式2中来计算每像素的电流预测值IDS1，该值表示每像素的电流变化。
【公式2】
IDS1＝α(Vimage-ΔVth1)
其中，Vimage是输入图像的像素数据。
在另一个实施例中，预测单元202通过将实际施加到像素的补偿数据加到每个像素处输入图像的像素数据，可以更精确地预测每个像素的消耗量。
调节单元204通过将每个像素的电流预测值IDS1代入下面的公式3来计算每个像素的电流比IRatio，其中，∑xyIDS1约为所有像素所需要的电流。调节单元204通过将电流比IRatio乘以测量单元206所测量的电流INET来进行电流校正，如在公式4中那样，以输出补偿电流IDS2。
【公式3】
Figure GDA0002205957360000081
【公式4】
IDS2＝INET·IRatio
像素的电流和驱动装置的阈值电压之间的关系预置在调节单元204中，如公式5。
【公式5】
IDS2＝α·(Vimage-Vth2)2
其中，α是根据显示器的初始特性预置的参数，Vth2是从IDS2预测的阈值电压。
公式5变为如下公式6。调节单元204通过将Vth2结合到Vth1中来调节驱动装置的阈值电压的预测值，如公式7所示，从而确定补偿值ΔVth，其中，Vth1是从每个像素的消耗量预测的阈值电压。补偿单元205将补偿值ΔVth加到输入图像的像素数据，并输出要写入屏幕AA的像素中的补偿数据Vcompensation。
【公式6】
log IDS2＝logα+2·log(Vimage-Vth2)
【公式7】
ΔVth＝Vth1+(1-c)·Vth2
其中，c是预置参数。
如上所述，本发明预测了每个像素的退化程度，并使用显示面板的电力线上测量的实际电流测量值精确地校正了预测值，从而能够精确地补偿像素的退化，而不使用与像素相连的感测电路。
因此，本发明使得从显示面板去掉与像素相连的感测线、感测晶体管和感测切换电路等成为可能，从而增加了像素的开口率、减少了制造成本、并通过补偿像素的退化而延长了显示器的寿命。
尽管参照若干说明性例子描述了实施例，但应该明白，本领域技术人员可以构思出落在本发明原理范围内的很多其他变型和实施例。具体说，在本说明书、附图及所附权利要求的范围内，在组件部分和/或组合排列方面各种变化和变型是可能的。除了组件部分和/或排列方面的变化和变型外，对本领域技术人员来说，其他用途也是显而易见的。

Claims (14)

1.一种电致发光显示器，包括：
显示面板，具有彼此交叉的数据线和扫描线、以及设置其上的多个像素；
补偿装置，通过积累每个像素处的输入图像的像素数据来产生预测值，该预测值指示像素的退化程度；通过调节所述预测值到测量与所述像素相连的电力线中的电流所获得的电流测量值来产生补偿值；以及通过用所述补偿值调制所述像素数据来产生补偿数据，其中，与所述像素相连的所述电力线中的所述电流是从所述电力线经过像素发光路径所流动的实际电流，并且所述电力线为所述像素提供驱动电压；以及
显示面板驱动电路，将所述补偿数据写入所述像素。
2.如权利要求1所述的电致发光显示器，其中，所述补偿装置包括：
预测单元，基于积累每个像素处的所述输入图像的所述像素数据而获得的每个像素的消耗量来产生所述预测值；
测量单元，测量与所述像素相连的所述电力线中流动的电流；
调节单元，通过在所述预测值中反映所述测量单元所测量的电流测量值来确定所述补偿值；以及
补偿单元，通过将所述补偿值加到所述像素数据来产生所述补偿数据。
3.如权利要求1所述的电致发光显示器，其中，所述补偿装置包括：
预测单元，基于每个像素的消耗量产生所述预测值，所述消耗量通过在每个像素处添加将所述补偿数据加到所述输入图像的所述像素数据的结果来获得；
测量单元，测量与所述像素相连的所述电力线中流动的电流；
调节单元，通过反映所述测量单元所测量的电流测量值到所述预测值中来确定所述补偿值；以及
补偿单元，通过将所述补偿值加到所述像素数据来产生所述补偿数据。
4.如权利要求3所述的电致发光显示器，
其中，所述预测单元还用来将每个像素的所述消耗量转换为驱动相应像素的发光装置的驱动装置的阈值电压的预测值，并基于所述阈值电压的所述预测值计算每个像素的电流预测值，
其中，所述调节单元还用来计算所述电流预测值与所述显示面板的所有像素的电流之和的电流比，通过反映所述电流测量值到所述电流比中来调节所述电流预测值，并通过将所述电流预测值转换为所述阈值电压的补偿值来确定所述补偿值。
5.一种电致发光显示器的驱动方法，该方法包括：
通过积累每个像素处的输入图像的像素数据来产生预测值，该预测值指示像素的退化程度；
通过调节所述预测值到测量与所述像素相连的电力线中的电流所获得的电流测量值来产生补偿值，其中，与所述像素相连的所述电力线中的所述电流是从所述电力线经过像素发光路径所流动的实际电流，并且所述电力线为所述像素提供驱动电压；
通过用所述补偿值调制所述像素数据来产生补偿数据；以及
将所述补偿数据写入显示面板的每个像素。
6.如权利要求5所述的驱动方法，
其中，所述预测值的产生包括：基于每个像素的消耗量产生所述预测值，所述消耗量通过积累每个像素处的所述输入图像的所述像素数据来获得；
其中，所述补偿数据的产生包括：通过在所述预测值中反映所述电流测量值来确定所述补偿值，并通过将所述补偿值加到所述像素数据来产生所述补偿数据。
7.如权利要求6所述的驱动方法，
其中，所述预测值的产生包括：基于每个像素的所述消耗量来产生所述预测值，所述消耗量通过在每个像素处添加将所述补偿数据加到所述输入图像的所述像素数据的结果来获得，以及
其中，所述补偿数据的产生包括：通过在所述预测值中反映所述电流测量值来确定所述补偿值，并且通过将所述补偿值加到所述像素数据来产生所述补偿数据。
8.如权利要求5所述的驱动方法，
其中，所述预测值的产生包括：将每个像素的消耗量转换为驱动所述像素的发光装置的驱动装置的阈值电压的预测值，并基于所述阈值电压的所述预测值计算每个像素的电流预测值，从而产生所述预测值，以及
其中，所述补偿数据的产生包括：产生所述电流预测值相对于所述显示面板的所有像素的电流之和的电流比，通过在所述电流比中反映所述电流测量值来调节每个像素的电流预测值，以及通过将每个像素的所述电流预测值转换为所述阈值电压补偿值来确定所述补偿值。
9.一种电致发光显示器，包括：
显示面板，具有彼此交叉的数据线和扫描线、以及设置其上的多个像素，其中，感测线没有连接到所述像素；
补偿装置，配置为：
通过积累每个像素处的输入图像的像素数据来产生预测值，该预测值指示像素的退化程度；
通过调节所述预测值到测量与所述像素相连的电力线中的电流所获得的电流测量值来产生补偿值，其中，与所述像素相连的所述电力线中的所述电流是从所述电力线经过像素发光路径所流动的实际电流，并且所述电力线为所述像素提供驱动电压；以及
通过用所述补偿值调制所述像素数据来产生补偿数据；以及
显示面板驱动电路，将所述补偿数据写入所述像素。
10.如权利要求9所述的电致发光显示器，其中，所述补偿装置包括：
预测单元，基于积累每个像素处的所述输入图像的所述像素数据而获得的每个像素的消耗量来产生所述预测值；
测量单元，测量与所述多个像素相连的所述电力线中流动的电流；
调节单元，通过在所述预测值中反映所述测量单元所测量的电流测量值来确定所述补偿值；以及
补偿单元，通过将所述补偿值加到所述像素数据来产生所述补偿数据。
11.如权利要求10所述的电致发光显示器，其中，所述预测单元将每个像素的所述消耗量转换为驱动相应像素的发光装置的驱动装置的阈值电压的预测值，并基于所述阈值电压的所述预测值计算每个像素的电流预测值。
12.如权利要求11所述的电致发光显示器，其中，所述调节单元计算所述电流预测值与显示面板的所有像素的电流之和的电流比，通过反映所述电流测量值到所述电流比中来调节所述电流预测值，并通过将所述电流预测值转换为所述阈值电压的补偿值来确定所述补偿值。
13.如权利要求11所述的电致发光显示器，其中，每个像素的所述阈值电压的所述预测值ΔVth1通过ΔVth1＝A(1-exp[-τβ])来计算，其中，A和β是根据所述电致发光显示器的特性而预置的参数，而τ是每个像素的所述消耗量。
14.如权利要求11所述的电致发光显示器，其中，将所述阈值电压的预测值ΔVth1代入IDS1＝α(Vimage-ΔVth1)中来计算每像素的所述电流预测值IDS1，其中，Vimage是输入图像的像素数据，α是根据所述电致发光显示器的特性预置的参数。
CN201811348662.2A 2017-11-30 2018-11-13 电致发光显示器及其驱动方法 Active CN109949746B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170163109A KR102618389B1 (ko) 2017-11-30 2017-11-30 전계 발광 표시장치와 그 구동 방법
KR10-2017-0163109 2017-11-30

Publications (2)

Publication Number Publication Date
CN109949746A CN109949746A (zh) 2019-06-28
CN109949746B true CN109949746B (zh) 2022-05-03

Family

ID=66632630

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811348662.2A Active CN109949746B (zh) 2017-11-30 2018-11-13 电致发光显示器及其驱动方法

Country Status (3)

Country Link
US (1) US10916204B2 (zh)
KR (1) KR102618389B1 (zh)
CN (1) CN109949746B (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11004391B2 (en) * 2019-06-10 2021-05-11 Apple Inc. Image data compensation based on predicted changes in threshold voltage of pixel transistors
KR20210089819A (ko) * 2020-01-08 2021-07-19 삼성디스플레이 주식회사 표시 장치 및 그 구동 방법
CN111415619B (zh) * 2020-03-10 2021-01-19 华南理工大学 一种oled屏幕残影消除和使用寿命提升的方法及***
KR20210128523A (ko) * 2020-04-16 2021-10-27 삼성디스플레이 주식회사 구동 제어부, 이를 포함하는 표시 장치 및 이를 이용한 표시 패널의 구동 방법
KR20220017021A (ko) * 2020-08-03 2022-02-11 삼성디스플레이 주식회사 표시 장치 및 이를 이용한 표시 패널의 영상 보상 방법
US11632830B2 (en) * 2020-08-07 2023-04-18 Samsung Display Co., Ltd. System and method for transistor parameter estimation
US11908361B2 (en) * 2020-10-08 2024-02-20 Sharp Kabushiki Kaisha Display device and driving method therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101194300A (zh) * 2005-04-12 2008-06-04 伊格尼斯创新有限公司 补偿发光装置显示器的不均匀性的方法和***
CN102663976A (zh) * 2010-11-15 2012-09-12 伊格尼斯创新公司 用于发光器件显示器中的不均匀性的补偿的***和方法
CN103578412A (zh) * 2012-08-07 2014-02-12 乐金显示有限公司 发光二极管显示装置及其驱动方法
CN103871361A (zh) * 2012-12-17 2014-06-18 乐金显示有限公司 有机发光显示装置及其驱动方法
CN104751786A (zh) * 2013-12-31 2015-07-01 乐金显示有限公司 有机发光显示装置及其驱动方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2848375B1 (fr) * 2002-12-05 2005-01-14 Schneider Electric Ind Sas Dispositif d'eclairage a diodes electroluminescentes comportant un dispositif de communication et installation comportant un tel dispositif
KR101152120B1 (ko) * 2005-03-16 2012-06-15 삼성전자주식회사 표시 장치 및 그 구동 방법
DE102007044567A1 (de) * 2007-09-07 2009-03-12 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Beleuchtungseinrichtung mit mehreren steuerbaren Leuchtdioden
JP5580536B2 (ja) * 2009-01-09 2014-08-27 グローバル・オーエルイーディー・テクノロジー・リミテッド・ライアビリティ・カンパニー 表示装置
KR102013701B1 (ko) 2012-12-11 2019-08-26 엘지디스플레이 주식회사 유기 발광 표시 장치 및 그 구동방법
KR20140127048A (ko) * 2013-04-24 2014-11-03 삼성디스플레이 주식회사 유기 발광 표시 장치
US9437137B2 (en) * 2013-08-12 2016-09-06 Ignis Innovation Inc. Compensation accuracy
KR102206202B1 (ko) 2013-08-30 2021-01-22 엘지디스플레이 주식회사 유기발광다이오드 표시장치와 그 구동방법
KR102336685B1 (ko) * 2015-01-20 2021-12-08 삼성디스플레이 주식회사 유기발광표시장치 및 그 구동방법
KR20160123452A (ko) * 2015-04-15 2016-10-26 삼성디스플레이 주식회사 유기 발광 표시 장치 및 그의 구동 방법
KR102419876B1 (ko) * 2015-08-21 2022-07-12 삼성디스플레이 주식회사 열화 보상 방법 및 이를 수행하는 표시 장치
KR102389581B1 (ko) * 2016-01-18 2022-04-25 삼성디스플레이 주식회사 유기 발광 표시 장치의 화소 및 유기 발광 표시 장치
JP6892576B2 (ja) * 2017-04-28 2021-06-23 天馬微電子有限公司 表示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101194300A (zh) * 2005-04-12 2008-06-04 伊格尼斯创新有限公司 补偿发光装置显示器的不均匀性的方法和***
CN102663976A (zh) * 2010-11-15 2012-09-12 伊格尼斯创新公司 用于发光器件显示器中的不均匀性的补偿的***和方法
CN103578412A (zh) * 2012-08-07 2014-02-12 乐金显示有限公司 发光二极管显示装置及其驱动方法
CN103871361A (zh) * 2012-12-17 2014-06-18 乐金显示有限公司 有机发光显示装置及其驱动方法
CN104751786A (zh) * 2013-12-31 2015-07-01 乐金显示有限公司 有机发光显示装置及其驱动方法

Also Published As

Publication number Publication date
US20190164503A1 (en) 2019-05-30
KR102618389B1 (ko) 2023-12-27
KR20190063936A (ko) 2019-06-10
CN109949746A (zh) 2019-06-28
US10916204B2 (en) 2021-02-09

Similar Documents

Publication Publication Date Title
CN109949746B (zh) 电致发光显示器及其驱动方法
CN108122531B (zh) 电致发光显示器及感测电致发光显示器的电特性的方法
CN108257554B (zh) 电致发光显示装置及其驱动方法
EP3113163B1 (en) Device and method for sensing threshold voltage of driving tft included in organic light emitting display
US10679562B2 (en) Electroluminescence display
US20180174518A1 (en) Electroluminescent display and method of compensating for electrical characteristics of electroluminescent display
US11151925B2 (en) Display device and driving method thereof
US11195472B2 (en) Display device
KR20170021406A (ko) 유기발광 표시장치의 발광소자에 대한 열화 센싱 방법
KR20190074847A (ko) 표시장치의 화질 보상 장치 및 방법
US10424254B2 (en) Driver integrated circuit and display device including the same
KR102566579B1 (ko) Oled 표시 장치
US11295675B2 (en) Display device and method of compensating pixel deterioration thereof
KR20180068175A (ko) 외부 보상용 드라이버 집적회로와 그를 포함한 표시장치, 및 표시장치의 데이터 보정방법
KR102379777B1 (ko) 전계 발광 시스템 및 그 기준전압 설정 방법
KR20210058232A (ko) 표시 장치
KR102380766B1 (ko) 전계 발광 표시장치 및 그 구동방법
JP7264980B2 (ja) 電界発光表示装置
US20220036813A1 (en) Electroluminescence display apparatus
KR20180059189A (ko) 외부 보상용 드라이버 집적회로와 그를 포함한 표시장치
KR20180059651A (ko) 전계발광 표시장치와 그의 전기적 특성 센싱방법
KR20180057285A (ko) 외부 보상용 드라이버 집적회로와 그를 포함한 표시장치, 및 표시장치의 데이터 보정방법
KR102458910B1 (ko) 유기발광 표시장치와 그 구동방법
US20230197003A1 (en) Electroluminescent Display Apparatus
KR102448545B1 (ko) Oled 표시 장치의 특성 편차에 따른 센싱 데이터 보정 방법

Legal Events

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