CN101278327A - 一种补偿照明设备老化过程的方法 - Google Patents

一种补偿照明设备老化过程的方法 Download PDF

Info

Publication number
CN101278327A
CN101278327A CNA2006800360617A CN200680036061A CN101278327A CN 101278327 A CN101278327 A CN 101278327A CN A2006800360617 A CNA2006800360617 A CN A2006800360617A CN 200680036061 A CN200680036061 A CN 200680036061A CN 101278327 A CN101278327 A CN 101278327A
Authority
CN
China
Prior art keywords
oled
parameter
actual
driver
correction signal
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
CNA2006800360617A
Other languages
English (en)
Other versions
CN101278327B (zh
Inventor
D·亨特
E·W·A·扬
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CN101278327A publication Critical patent/CN101278327A/zh
Application granted granted Critical
Publication of CN101278327B publication Critical patent/CN101278327B/zh
Expired - Fee Related 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]
    • 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]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/60—Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
    • 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
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Landscapes

  • 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 Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

所述发明涉及一种补偿照明设备老化过程的方法，该照明设备包含至少一个其光输出线随时间变化的有机发光二极管(1)(OLED)和与该OLED(1)相连接的驱动器，该OLED具有独特的伏安特性。

Description

一种补偿照明设备老化过程的方法
本发明涉及一种补偿照明设备老化过程的方法，该照明设备包含至少一个其光输出随时间改变的有机发光二极管(OLED)。
使用有机发光二极管的照明设备使高级平板系统等产生了极大的兴趣。这些系统利用流经有机材料薄膜的电流来产生光。所发射光的颜色和光电能量转换效率由有机薄膜材料的成分决定。然而，随着OLED的使用，照明设备中的有机材料会逐渐老化并且发光效率也变低。这缩短了照明设备的使用寿命。效率降低的速度是电流密度和照明设备温度的函数。同时，照明设备温度的变化也会影响效率的变化。
US 2004/0070558 A1描述了一种有机发光二极管(OLED)显示系统，该系统具有位于衬底上的可寻址的且具备性能属性的像素和用于控制显示设备像素的控制电路，该显示系统包含位于衬底上的且与控制电路连接的一个或者多个OLED像素和一个OLED参考像素。OLED参考像素包含与一个或者多个OLED像素相同的性能属性，OLED参考像素具有一种电压感测电路，该电路包含一个连接在OLED参考像素的一个端子上的晶体管，用于感测OLED参考像素上的电压以产生一个表示OLED参考像素上电压的电压信号。并且，有机发光二极管包含用来产生表示OLED参考像素性能属性的输出信号的测量电路和连接到该测量电路用来接收输出信号的分析电路，所述分析电路将该性能属性同预先设定的性能属性相比较，并响应于此产生一个反馈信号。所述控制电路对该反馈信号做出响应来补偿OLED像素输出的变化。
不幸的是，所描述的这种使用参考像素的OLED显示系统的复杂性非常高。并且，使用参考像素的做法并不适用于“单像素”的照明设备，因为这样就意味着安装的照明设备的数量要加倍，而这在经济性和实用性上都是一个根本的缺陷。
本发明的目标就在于消除上面所提到的缺陷。特别地，本发明的一个目标在于提供一种补偿照明设备老化过程的方法，该方法简单并且容易调整来产生光，其中OLED的光输出以这样一种方式来控制：在该照明设备的整个使用期内亮度是恒定的。
这个目标通过本发明权利要求1中所述的一种补偿照明设备老化过程的方法来实现。本发明方法的有利实施例在从属权利要求中定义。
于是，提供一种补偿照明设备老化过程的方法，该照明设备包含至少一个具备独特伏安特性并且其光输出随时间变化的有机发光二极管(OLED)。并且，一驱动器与该OLED连接。本发明的方法包含一个由多个步骤组成的校正计算过程。本发明的方法所提出的解决方案基于OLED上伏安特性的相关性。依照本发明的方法，必须确定第一参数，这个参数包括有关OLED实际伏安特性的斜率的信息。在接下来的步骤中，至少基于所测量的第一参数来产生一个表示老化过程的校正信号，以用于补偿OLED光输出的变化。令人惊讶地，我们已经发现基于已确定的第一参数来可以产生校正信号，该参数包含有关实际伏安特性斜率的实际值的信息。伏安特性的斜率(IV曲线)在OLED的使用期内会降低。
优选地，第一参数考虑了取对数后的OLED实际伏安特性的斜率。那意味着所述特性包括取对数后的电流值和未取对数的电压值(log-lin伏安特性或者半对数特性)。有利地，驱动器包含测量电路和控制电路，其中测量电路检测OLED实际半对数伏安曲线的实际斜率值，控制电路产生用于该OLED的校正信号。在校正计算的过程中，驱动器能够改变电流而测量电路检测OLED的电压。同样，通过改变OLED的电压以及测量电流可以得到伏安曲线的斜率。在这两个实施例中，半对数伏安曲线的斜率被用作包含OLED的照明设备的老化补偿的指标。所检测的半对数伏安曲线的斜率值被反馈给控制电路，该控制电路调整驱动电流从而获得该照明设备恒定的光输出。获得恒定光输出所需的补偿量能够通过数学方程得到，该方程基于所测量的第一参数产生一个校正信号。
依照本发明的另一个优选实施例，驱动器可以包含一个查找表，从而依据测量得到的半对数伏安曲线的斜率来确定所述校正信号。优选地，校正计算过程由基于微处理器的控制电路来执行。
有利地，驱动器检测高于OLED阈值电压的实际伏安特性的实际斜率值。该阈值电压被定义为能够在OLED上引发照明的最小电压值。由于老化的原因，OLED的阈值电压会在使用期内逐渐升高。因而，正常的操作电压也会随之升高。OLED的阈值电压值能够储存在驱动器的存储器中。可替换地，测量电路可以在检测实际半对数伏安曲线的实际斜率值之前测量OLED的阈值电压。通过考虑OLED阈值电压之上的半对数伏安曲线，校正信号补偿光输出变化的效果会得到充分的提高。
根据计算过程，检测得到的实际半对数伏安曲线的斜率可以是计算校正信号的唯一参数。依照本发明的一个优选实施例，计算过程包含多于一个参数来产生校正信号。一个附加参数可以是由测量电路检测得到的OLED的导通时间。驱动器也可以计算OLED的平均导通时间，也可以在校正计算的过程中进行考虑。
温度也可以作为反映老化的一个附加参数。例如，可以用一种温度传感器来确定温度信息并将其传送给控制电路。温度的测量可以每几分钟执行一次并将测量结果储存在驱动器的存储器内。温度信息也可以从作为驱动器固定部分的查找表中读取得到。
依照另一个优选实施例，未使用的OLED的伏安特性也可以作为校正计算过程的一个重要参数。在这种情况下，比较实际半对数伏安曲线的实际斜率值和未使用的半对数伏安曲线的斜率值从而得到有关OLED老化的信息。优选地，未使用的OLED的伏安特性储存在驱动器中。
另外，根据本发明的方法可以在计算机系统上执行。适合于执行本发明各步骤的计算机程序自动产生用于补偿OLED光输出变化的校正信号。借助这样一种适合于操作本发明方法的计算机程序，根据本发明的校正计算过程可以被自动地执行并且具有较低的整体能量消耗。
上面描述的校正计算过程的步骤可以在上电、断电以及使用过程中连续地或者周期性地执行。可替换地，校正计算过程也可以通过响应提供给控制电路的用户信号来执行。校正的任何变化可以在幅值上进行限制，比如限制为5％的变化。校正变化也可以在时间上平均。可替换地，一次实际的校正可以只在若干次读取之后进行，比如每当OLED上电的时候，执行校正计算以及多个所计算的校正信号被平均来产生应用于OLED的实际校正信号。在OLED的正常照明过程中执行校正计算过程，其对人眼是不可见的。
本发明涉及一种照明设备，该照明设备包含至少一个具有随时间变化的光输出的有机发光二极管(OLED)和与该OLED相连接的驱动器，该OLED具有独特的伏安特性，其中该照明设备包括测量电路和控制电路，该测量电路用来确定包含关于OLED实际伏安特性的斜率的信息的第一参数，该控制电路至少基于反映老化的第一参数来生成校正信号从而补偿OLED的光输出的变化。获得恒定光输出的补偿量既可以是驱动器的一个固定部分又可以基于微处理器的电路的控制算法的形式来实现。补偿特性取决于OLED并且能够可编程地改变。
上面所提到的照明设备和方法都能应用于多种系统当中，尤其例如车辆系统、家庭照明系统、用于显示的背光系统、环境照明系统、(具有可调颜色的)照相机闪光灯或者商店照明系统。
前面提到的组件以及要求权利的组件和所述实施例中将根据本发明使用的组件都不受任何关于技术概念上大小、形状、材料选择等特殊异常的约束，这样使得在相关领域已知的所选条件能够无限制地应用。
本发明目标的附加细节、特征以及优点将在从属权利要求中得到公开，接下来对各个附图的描述涉及有关本发明的照明设备的优选实施例，该描述只作说明的目的。
图1示出了一个根据本发明的照明设备的非常概要的视图，
图2a示出了根据图1中照明设备的OLED的半对数曲线，该曲线是温度的函数，
图2b示出了根据图1中的OLED的两条半对数伏安曲线，这些曲线是使用寿命的函数
图1举例说明了包含一个有机发光二极管1(OLED)的照明设备，其中照明设备的光输出会随着时间改变。该照明设备包含连接在OLED1上的驱动器2。驱动器2包含测量电路3和控制电路4，测量电路3确定OLED1的实际对数伏安特性的实际斜率值。在本发明的所示实施例中，电流值被取对数，而电压值不取对数(半对数伏安特性)。控制电路4基于所测得的实际半对数伏安特性的实际斜率值来产生校正信号从而补偿OLED1的光输出的变化。确定的伏安曲线斜率是OLED1老化的一个重要参数。
现在已经发现，对于恒定的驱动电流，OLED1上的电压会随着操作时间而增大，这被图解在图2b中。参考图2a，电压随着温度的升高也会增大。所以，电压并不能被用作OLED设备1的老化指标，因为老化取决于温度和工作时间。但是对比这两张图可以发现，半对数伏安曲线的斜率随工作时间发生非常大的变化，但几乎不依赖于温度。温度的变化仅仅引起半对数伏安特性的电压漂移，这被图解在图2b中。
依照所示的实施例，驱动器2检测高于OLED1的阈值电压的实际半对数伏安曲线的实际斜率值，该阈值电压以附图标记8示出在图2b中。并且，未使用的OLED1的半对数伏安特性7和具有1/2使用寿命的OLED1的半对数伏安特性6都被示在图2b中，该图显示出伏安特性曲线6、7之间的主要差别只存在于高于OLED1的阈值电压8的区域内。
在照明过程中，驱动器2测量OLED1的实际半对数伏安特性的斜率。随后，基于所检测的半对数伏安曲线的实际斜率值生成校正信号，这种校正信号调整驱动电流从而获得恒定的光输出。附加的一些参数例如OLED的导通时间或者温度也可以被用于产生校正信号的过程。在本发明的一个可能的实施例中，这些附加的参数可以从驱动器2的存储器5中读取。可替换地，这些附加参数也可以在校正计算过程之前或者该过程期间测量。在所示的实施例中，产生校正信号的过程由控制电路4中微处理器的算法来实现。
在本发明的一个可能的实施例中，用于OLED校正信号的计算结果可以被储存在所述存储器5中，该校正信号包含有关使用寿命和光输出的信息。将OLED砖片1特定的附加信息储存在本地存储器5的一个好处是，当有新的OLED砖片1被添加进OLED砖片1组件或者当OLED砖片1在OLED砖片1组件中被重新排列时，有价值的色彩校正数据、老化参数和其他一些详细资料也同时被传送。
数字列表：
1  OLED
2  驱动器
3  测量电路
4  控制电路
5  存储设备
6  半对数IV曲线(1/2使用寿命)
7  半对数IV曲线(未使用的OLED)
8  阈值电压区域

Claims (11)

1.一种用于补偿照明设备老化过程的方法，该照明设备包括：
至少一个有机发光二极管(1)(OLED)，其具有随时间变化的光输出，
与该OLED(1)相连接的驱动器(2)，该OLED具有独特的伏安特性，
该方法包括含有以下步骤的校正计算过程：
确定包含有关OLED(1)实际伏安特性的斜率的信息的第一参数，至少基于该第一参数产生表示老化的校正信号以用于补偿OLED(1)的光输出中的变化。
2.依照权利要求1的方法，其特征在于第一参数考虑了OLED(1)的实际半对数伏安特性的斜率。
3.依照权利要求1或2的方法，其特征在于驱动器(2)包括测量电路(3)和控制电路(4)，其中测量电路(3)检测OLED(1)的实际半对数伏安特性的实际斜率值，控制电路(4)产生用于该OLED的校正信号。
4.依照前面任何一个权利要求的方法，其特征在于驱动器(2)检测高于OLED(1)阈值电压的实际半对数伏安特性的实际斜率值。
5.依照前面任何一个权利要求的方法，其特征在于测量电路(3)测量OLED(1)的导通时间作为表示老化的第二参数。
6.依照前面任何一个权利要求的方法，其特征在于第三参数包含未使用的OLED(1)的伏安特性。
7.依照前面任何一个权利要求的方法，其特征在于驱动器(2)包含数学方程和/或查找表以用来基于上述参数产生校正信号。
8.依照前面任何一个权利要求的方法，其特征在于驱动器(2)包含硬件电路，特别是无源网络，用来响应于所测量的第一参数确定校正信号。
9.依照前面任何一个权利要求的方法，其特征在于表示老化的参数和计算得到的校正信号都被储存在存储器(5)中。
10.一种照明设备，包括
至少一个有机发光二极管(1)(OLED)，其具有随时间变化的光输出，以及
与该OLED相连的驱动器(2)，该OLED具有独特的伏安特性，
其中该照明设备包含：
测量电路(3)和控制电路(4)，该测量电路用于确定包含有关OLED(1)实际伏安特性的斜率的信息的第一参数，该控制电路至少基于该第一参数生成表示老化的校正信号以用于补偿OLED(1)的光输出中的变化。
11.依照权利要求10的照明设备，使用了依照权利要求1至9的方法。
CN2006800360617A 2005-09-29 2006-09-19 一种补偿照明设备老化过程的方法 Expired - Fee Related CN101278327B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05108988.6 2005-09-29
EP05108988 2005-09-29
PCT/IB2006/053364 WO2007036837A2 (en) 2005-09-29 2006-09-19 A method of compensating an aging process of an illumination device

Publications (2)

Publication Number Publication Date
CN101278327A true CN101278327A (zh) 2008-10-01
CN101278327B CN101278327B (zh) 2011-04-13

Family

ID=37898569

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006800360617A Expired - Fee Related CN101278327B (zh) 2005-09-29 2006-09-19 一种补偿照明设备老化过程的方法

Country Status (7)

Country Link
US (1) US20080252571A1 (zh)
EP (1) EP1932137B1 (zh)
JP (1) JP5268643B2 (zh)
KR (1) KR101333025B1 (zh)
CN (1) CN101278327B (zh)
TW (1) TWI415078B (zh)
WO (1) WO2007036837A2 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102741910A (zh) * 2010-02-04 2012-10-17 伊格尼斯创新公司 用于提取有机发光器件的相关曲线的系统和方法
CN103314644A (zh) * 2010-12-20 2013-09-18 夏普株式会社 照明装置
CN102077691B (zh) * 2008-06-27 2014-07-30 创新公司 照明装置及控制方法
CN103996369A (zh) * 2014-05-14 2014-08-20 京东方科技集团股份有限公司 电荷泵电路的控制系统、方法、装置及显示装置
WO2018228076A1 (zh) * 2017-06-16 2018-12-20 京东方科技集团股份有限公司 发光器件的老化测试方法和老化测试系统

Families Citing this family (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2443206A1 (en) 2003-09-23 2005-03-23 Ignis Innovation Inc. Amoled display backplanes - pixel driver circuits, array architecture, and external compensation
CA2472671A1 (en) 2004-06-29 2005-12-29 Ignis Innovation Inc. Voltage-programming scheme for current-driven amoled displays
US8576217B2 (en) 2011-05-20 2013-11-05 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10012678B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US9280933B2 (en) 2004-12-15 2016-03-08 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10013907B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
TWI402790B (zh) 2004-12-15 2013-07-21 Ignis Innovation Inc 用以程式化，校準及驅動一發光元件顯示器的方法及系統
US9275579B2 (en) 2004-12-15 2016-03-01 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US20140111567A1 (en) 2005-04-12 2014-04-24 Ignis Innovation Inc. System and method for compensation of non-uniformities in light emitting device displays
US9799246B2 (en) 2011-05-20 2017-10-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9171500B2 (en) 2011-05-20 2015-10-27 Ignis Innovation Inc. System and methods for extraction of parasitic parameters in AMOLED displays
CA2496642A1 (en) 2005-02-10 2006-08-10 Ignis Innovation Inc. Fast settling time driving method for organic light-emitting diode (oled) displays based on current programming
WO2006131924A2 (en) 2005-06-07 2006-12-14 Oree, Advanced Illumination Solutions Inc. Illumination apparatus
US8215815B2 (en) 2005-06-07 2012-07-10 Oree, Inc. Illumination apparatus and methods of forming the same
US8272758B2 (en) 2005-06-07 2012-09-25 Oree, Inc. Illumination apparatus and methods of forming the same
JP5355080B2 (ja) 2005-06-08 2013-11-27 イグニス・イノベイション・インコーポレーテッド 発光デバイス・ディスプレイを駆動するための方法およびシステム
CA2518276A1 (en) 2005-09-13 2007-03-13 Ignis Innovation Inc. Compensation technique for luminance degradation in electro-luminance devices
WO2007118332A1 (en) 2006-04-19 2007-10-25 Ignis Innovation Inc. Stable driving scheme for active matrix displays
CA2556961A1 (en) 2006-08-15 2008-02-15 Ignis Innovation Inc. Oled compensation technique based on oled capacitance
US7355574B1 (en) * 2007-01-24 2008-04-08 Eastman Kodak Company OLED display with aging and efficiency compensation
KR100858615B1 (ko) * 2007-03-22 2008-09-17 삼성에스디아이 주식회사 유기전계발광 표시장치 및 그의 구동방법
KR100858616B1 (ko) * 2007-04-10 2008-09-17 삼성에스디아이 주식회사 유기전계발광 표시장치 및 그의 구동방법
KR100846970B1 (ko) * 2007-04-10 2008-07-17 삼성에스디아이 주식회사 유기전계발광 표시장치 및 그의 구동방법
KR100846969B1 (ko) 2007-04-10 2008-07-17 삼성에스디아이 주식회사 유기전계발광 표시장치 및 그의 구동방법
KR100893482B1 (ko) 2007-08-23 2009-04-17 삼성모바일디스플레이주식회사 유기전계발광 표시장치 및 그의 구동방법
US7929816B2 (en) 2007-12-19 2011-04-19 Oree, Inc. Waveguide sheet containing in-coupling, propagation, and out-coupling regions
US7907804B2 (en) 2007-12-19 2011-03-15 Oree, Inc. Elimination of stitch artifacts in a planar illumination area
KR100902238B1 (ko) 2008-01-18 2009-06-11 삼성모바일디스플레이주식회사 유기전계발광 표시장치 및 그의 구동방법
TW200950178A (en) * 2008-01-30 2009-12-01 Koninkl Philips Electronics Nv OLED lighting device
US20090225566A1 (en) 2008-03-05 2009-09-10 Micha Zimmermann Illumination apparatus and methods of forming the same
US8301002B2 (en) 2008-07-10 2012-10-30 Oree, Inc. Slim waveguide coupling apparatus and method
US8297786B2 (en) 2008-07-10 2012-10-30 Oree, Inc. Slim waveguide coupling apparatus and method
US8130182B2 (en) * 2008-12-18 2012-03-06 Global Oled Technology Llc Digital-drive electroluminescent display with aging compensation
US8624527B1 (en) 2009-03-27 2014-01-07 Oree, Inc. Independently controllable illumination device
US20100320904A1 (en) 2009-05-13 2010-12-23 Oree Inc. LED-Based Replacement Lamps for Incandescent Fixtures
US10319307B2 (en) 2009-06-16 2019-06-11 Ignis Innovation Inc. Display system with compensation techniques and/or shared level resources
US9384698B2 (en) 2009-11-30 2016-07-05 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
US9311859B2 (en) 2009-11-30 2016-04-12 Ignis Innovation Inc. Resetting cycle for aging compensation in AMOLED displays
CA2688870A1 (en) 2009-11-30 2011-05-30 Ignis Innovation Inc. Methode and techniques for improving display uniformity
CA2669367A1 (en) 2009-06-16 2010-12-16 Ignis Innovation Inc Compensation technique for color shift in displays
US8727597B2 (en) 2009-06-24 2014-05-20 Oree, Inc. Illumination apparatus with high conversion efficiency and methods of forming the same
US10996258B2 (en) 2009-11-30 2021-05-04 Ignis Innovation Inc. Defect detection and correction of pixel circuits for AMOLED displays
US10867536B2 (en) 2013-04-22 2020-12-15 Ignis Innovation Inc. Inspection system for OLED display panels
US8803417B2 (en) 2009-12-01 2014-08-12 Ignis Innovation Inc. High resolution pixel architecture
CA2687631A1 (en) 2009-12-06 2011-06-06 Ignis Innovation Inc Low power driving scheme for display applications
US10089921B2 (en) 2010-02-04 2018-10-02 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US9881532B2 (en) 2010-02-04 2018-01-30 Ignis Innovation Inc. System and method for extracting correlation curves for an organic light emitting device
US10176736B2 (en) 2010-02-04 2019-01-08 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10163401B2 (en) 2010-02-04 2018-12-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US20140313111A1 (en) 2010-02-04 2014-10-23 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
CA2696778A1 (en) 2010-03-17 2011-09-17 Ignis Innovation Inc. Lifetime, uniformity, parameter extraction methods
US8907991B2 (en) 2010-12-02 2014-12-09 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
WO2012077046A2 (en) 2010-12-09 2012-06-14 Koninklijke Philips Electronics N.V. Electroluminescent device with adjustable color point
US9530349B2 (en) 2011-05-20 2016-12-27 Ignis Innovations Inc. Charged-based compensation and parameter extraction in AMOLED displays
US9466240B2 (en) 2011-05-26 2016-10-11 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
WO2012164475A2 (en) 2011-05-27 2012-12-06 Ignis Innovation Inc. Systems and methods for aging compensation in amoled displays
WO2013041109A1 (en) * 2011-09-23 2013-03-28 Martin Professional A/S Method of controling illumination device based on current-voltage model
US8591072B2 (en) 2011-11-16 2013-11-26 Oree, Inc. Illumination apparatus confining light by total internal reflection and methods of forming the same
US9324268B2 (en) 2013-03-15 2016-04-26 Ignis Innovation Inc. Amoled displays with multiple readout circuits
US10089924B2 (en) 2011-11-29 2018-10-02 Ignis Innovation Inc. Structural and low-frequency non-uniformity compensation
US8937632B2 (en) 2012-02-03 2015-01-20 Ignis Innovation Inc. Driving system for active-matrix displays
US9747834B2 (en) 2012-05-11 2017-08-29 Ignis Innovation Inc. Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
US8922544B2 (en) 2012-05-23 2014-12-30 Ignis Innovation Inc. Display systems with compensation for line propagation delay
WO2014006501A1 (en) 2012-07-03 2014-01-09 Yosi Shani Planar remote phosphor illumination apparatus
KR102025669B1 (ko) * 2012-11-20 2019-09-26 주성엔지니어링(주) 유기 발광 소자 구동 장치 및 구동 방법
US9786223B2 (en) 2012-12-11 2017-10-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9336717B2 (en) 2012-12-11 2016-05-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9830857B2 (en) 2013-01-14 2017-11-28 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
WO2014108879A1 (en) 2013-01-14 2014-07-17 Ignis Innovation Inc. Driving scheme for emissive displays providing compensation for driving transistor variations
EP2779147B1 (en) 2013-03-14 2016-03-02 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
DE112014003719T5 (de) 2013-08-12 2016-05-19 Ignis Innovation Inc. Kompensationsgenauigkeit
US9741282B2 (en) 2013-12-06 2017-08-22 Ignis Innovation Inc. OLED display system and method
US9761170B2 (en) 2013-12-06 2017-09-12 Ignis Innovation Inc. Correction for localized phenomena in an image array
US9502653B2 (en) 2013-12-25 2016-11-22 Ignis Innovation Inc. Electrode contacts
DE102015206281A1 (de) 2014-04-08 2015-10-08 Ignis Innovation Inc. Anzeigesystem mit gemeinsam genutzten Niveauressourcen für tragbare Vorrichtungen
CA2879462A1 (en) 2015-01-23 2016-07-23 Ignis Innovation Inc. Compensation for color variation in emissive devices
CA2889870A1 (en) 2015-05-04 2016-11-04 Ignis Innovation Inc. Optical feedback system
CA2892714A1 (en) 2015-05-27 2016-11-27 Ignis Innovation Inc Memory bandwidth reduction in compensation system
CA2900170A1 (en) 2015-08-07 2017-02-07 Gholamreza Chaji Calibration of pixel based on improved reference values
DE102019115817A1 (de) 2019-06-11 2020-12-17 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Verfahren zum Betreiben einer Leuchtdiodenanordnung, Verfahren zum Charakterisieren einer Leuchtdiode und Leuchtdiodenanordnung
WO2021205564A1 (ja) * 2020-04-08 2021-10-14 シャープ株式会社 表示装置及び表示装置の駆動方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5457434A (en) * 1994-03-31 1995-10-10 At&T Global Information Solutions Company Integrated circuit oscillator with high voltage feedback network
US6473065B1 (en) * 1998-11-16 2002-10-29 Nongqiang Fan Methods of improving display uniformity of organic light emitting displays by calibrating individual pixel
US7227519B1 (en) * 1999-10-04 2007-06-05 Matsushita Electric Industrial Co., Ltd. Method of driving display panel, luminance correction device for display panel, and driving device for display panel
US6414661B1 (en) * 2000-02-22 2002-07-02 Sarnoff Corporation Method and apparatus for calibrating display devices and automatically compensating for loss in their efficiency over time
EP1158483A3 (en) * 2000-05-24 2003-02-05 Eastman Kodak Company Solid-state display with reference pixel
JP2005501273A (ja) * 2001-08-23 2005-01-13 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 有機電界発光素子における色補正のための方法および駆動手段
US20030071821A1 (en) * 2001-10-11 2003-04-17 Sundahl Robert C. Luminance compensation for emissive displays
DE60321852D1 (de) * 2002-04-15 2008-08-14 Pioneer Corp Steuervorrichtung mit Verschlechterungsfeststellung für eine selbstleuchtende Anzeigevorrichtung
US7079091B2 (en) * 2003-01-14 2006-07-18 Eastman Kodak Company Compensating for aging in OLED devices
WO2004066249A1 (en) * 2003-01-24 2004-08-05 Koninklijke Philips Electronics N.V. Active matrix display devices
US7161566B2 (en) * 2003-01-31 2007-01-09 Eastman Kodak Company OLED display with aging compensation
US7262753B2 (en) * 2003-08-07 2007-08-28 Barco N.V. Method and system for measuring and controlling an OLED display element for improved lifetime and light output
US7183707B2 (en) * 2004-04-12 2007-02-27 Eastman Kodak Company OLED device with short reduction
TWI278800B (en) * 2004-10-28 2007-04-11 Au Optronics Corp Current-driven OLED panel and related pixel structure
JP4513528B2 (ja) * 2004-11-25 2010-07-28 セイコーエプソン株式会社 発光装置、画像形成装置、表示装置、及び発光素子の駆動方法

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102077691B (zh) * 2008-06-27 2014-07-30 创新公司 照明装置及控制方法
CN102741910A (zh) * 2010-02-04 2012-10-17 伊格尼斯创新公司 用于提取有机发光器件的相关曲线的系统和方法
CN102741910B (zh) * 2010-02-04 2016-01-13 伊格尼斯创新公司 用于提取有机发光器件的相关曲线的系统和方法
CN103314644A (zh) * 2010-12-20 2013-09-18 夏普株式会社 照明装置
CN103314644B (zh) * 2010-12-20 2015-06-03 夏普株式会社 照明装置
CN103996369A (zh) * 2014-05-14 2014-08-20 京东方科技集团股份有限公司 电荷泵电路的控制系统、方法、装置及显示装置
US9343952B2 (en) 2014-05-14 2016-05-17 Boe Technology Group Co., Ltd. System and method for controlling charge pump circuit, and display device
WO2018228076A1 (zh) * 2017-06-16 2018-12-20 京东方科技集团股份有限公司 发光器件的老化测试方法和老化测试系统
US10914781B2 (en) 2017-06-16 2021-02-09 Boe Technology Group Co., Ltd. Aging test method and aging test system for light emitting device

Also Published As

Publication number Publication date
TW200729135A (en) 2007-08-01
US20080252571A1 (en) 2008-10-16
KR101333025B1 (ko) 2013-11-26
WO2007036837A2 (en) 2007-04-05
EP1932137B1 (en) 2016-07-13
JP5268643B2 (ja) 2013-08-21
CN101278327B (zh) 2011-04-13
KR20080063372A (ko) 2008-07-03
WO2007036837A3 (en) 2007-07-19
JP2009510685A (ja) 2009-03-12
EP1932137A2 (en) 2008-06-18
TWI415078B (zh) 2013-11-11

Similar Documents

Publication Publication Date Title
CN101278327B (zh) 一种补偿照明设备老化过程的方法
RU2643471C2 (ru) Способ прогнозирования срока службы, машиночитаемый носитель данных, включающий программу прогнозирования срока службы, и устройство для прогнозирования срока службы
CN102414737B (zh) 补偿驱动信号的电致发光子像素
US7262753B2 (en) Method and system for measuring and controlling an OLED display element for improved lifetime and light output
EP1701589B1 (en) Electric circuit and method for monitoring a temperature of a light emitting diode
CN105869575B (zh) 操作显示器的方法
CN102077691B (zh) 照明装置及控制方法
US7619598B2 (en) Driver for an OLED passive-matrix display
CN101194300B (zh) 补偿发光装置显示器的不均匀性的方法和系统
CN102663976B (zh) 用于发光器件显示器中的不均匀性的补偿的系统和方法
US20100327872A1 (en) Devices And Methods For LED Life Test
KR20090070375A (ko) 조도 감지 장치 및 이를 포함하는 표시 장치
KR20050043960A (ko) 디스플레이 디바이스
WO2009095853A2 (en) System and method for estimating the junction temperature of a light emitting diode
RU2012103548A (ru) Жидкокристаллическое дисплейное устройство и способ управления источником света
JP5993671B2 (ja) Ｌｅｄ光束制御装置、道路照明装置
US20190156737A1 (en) Display Degradation Compensation
KR20130053649A (ko) 발광다이오드 구동회로 및 그 구동 방법
CN102376255B (zh) 背光亮度控制电路及其方法
KR20100008845A (ko) 백라이트 밝기 제어 장치 및 방법
US20160374165A1 (en) Backlight module and liquid-crystal display device using the same
JP6074195B2 (ja) Ｌｅｄ光束制御装置、道路照明装置
KR101635911B1 (ko) Ｏｌｅｄ 디스플레이 디바이스의 수명 예측 시스템 및 방법
WO2008120133A2 (en) Method and device for driving an led system
CN116472575A (zh) 显示装置、电流校正值的建立方法与电流校正系统

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160328

Address after: Aachen

Patentee after: KONINKLIJKE PHILIPS N.V.

Address before: Holland Ian Deho Finn

Patentee before: Koninklijke Philips Electronics N.V.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110413

Termination date: 20210919

CF01 Termination of patent right due to non-payment of annual fee