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1. 发明授权

US08994617B2 Lifetime uniformity parameter extraction methods 有权
标题翻译：寿命均匀参数提取方法
公开(公告)号：US08994617B2
公开(公告)日：2015-03-31
申请号：US13050006
申请日：2011-03-17
申请人： Gholamreza Chaji , Javid Jaffari , Arokia Nathan
发明人： Gholamreza Chaji , Javid Jaffari , Arokia Nathan
IPC分类号： G09G3/30 , G09G3/00 , G09G3/32
CPC分类号： G09G3/006 , G09G3/3225 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2330/12 , G09G2360/14
摘要： A system and method for deriving a sequence of OLED non-uniformity test patterns. A pattern generator generates a full sequence of display patterns according to a transform function, such as a discrete cosine transformation or wavelet transformation. A driver drives a display with each of the sequence of patterns. A sensor senses a property of the display, such as a total current for the display, for each of the sequence of patterns. An extraction unit derives a pixel non-uniformity model using the sensed properties and an inverse of the transform function. Patterns that contribute less than a threshold amount to the non-uniformity model can be identified and deleted to derive a sparse sequence of patterns, which can be stored in a memory. The sparse sequence of patterns can be used to test the display and extract a set of pixel non-uniformity values. The pixel non-uniformity values can be used to generate a correction signal for the display.
摘要翻译：用于导出OLED非均匀性测试图案序列的系统和方法。模式发生器根据变换函数（如离散余弦变换或小波变换）生成完整的显示模式序列。驱动器驱动具有每个模式序列的显示器。对于每个图案序列，传感器感测显示器的属性，例如显示器的总电流。提取单元使用感测到的属性和变换函数的逆，得出像素非均匀性模型。可以识别和删除贡献小于非均匀性模型的阈值量的模式以导出可以存储在存储器中的模式的稀疏序列。模式的稀疏序列可用于测试显示并提取一组像素非均匀性值。可以使用像素非均匀性值来产生用于显示的校正信号。

2. 发明申请

US20110227964A1 LIFETIME UNIFORMITY PARAMETER EXTRACTION METHODS 有权
标题翻译： LIFETIME均质参数提取方法
公开(公告)号：US20110227964A1
公开(公告)日：2011-09-22
申请号：US13050006
申请日：2011-03-17
申请人： GHOLAMREZA CHAJI , Javid Jaffari , Arokia Nathan
发明人： GHOLAMREZA CHAJI , Javid Jaffari , Arokia Nathan
IPC分类号： G09G5/10
CPC分类号： G09G3/006 , G09G3/3225 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2330/12 , G09G2360/14
摘要： A system and method for deriving a sequence of OLED non-uniformity test patterns. A pattern generator generates a full sequence of display patterns according to a transform function, such as a discrete cosine transformation or wavelet transformation. A driver drives a display with each of the sequence of patterns. A sensor senses a property of the display, such as a total current for the display, for each of the sequence of patterns. An extraction unit derives a pixel non-uniformity model using the sensed properties and an inverse of the transform function. Patterns that contribute less than a threshold amount to the non-uniformity model can be identified and deleted to derive a sparse sequence of patterns, which can be stored in a memory. The sparse sequence of patterns can be used to test the display and extract a set of pixel non-uniformity values. The pixel non-uniformity values can be used to generate a correction signal for the display.
摘要翻译：用于导出OLED非均匀性测试图案序列的系统和方法。模式发生器根据变换函数（如离散余弦变换或小波变换）生成完整的显示模式序列。驱动器驱动具有每个模式序列的显示器。对于每个图案序列，传感器感测显示器的属性，例如显示器的总电流。提取单元使用感测到的属性和变换函数的逆，得出像素非均匀性模型。可以识别和删除贡献小于非均匀性模型的阈值量的模式以导出可以存储在存储器中的模式的稀疏序列。模式的稀疏序列可用于测试显示并提取一组像素非均匀性值。可以使用像素非均匀性值来产生用于显示的校正信号。

3. 发明授权

US08589100B2 System and methods for extracting correlation curves for an organic light emitting device 有权
标题翻译：用于提取有机发光器件的相关曲线的系统和方法
公开(公告)号：US08589100B2
公开(公告)日：2013-11-19
申请号：US13020252
申请日：2011-02-03
申请人： Gholamreza Chaji , Javid Jaffari , Arokia Nathan
发明人： Gholamreza Chaji , Javid Jaffari , Arokia Nathan
IPC分类号： G01R19/0092 , G01R19/2513 , G01R21/133 , G01R19/25
CPC分类号： G09G3/006 , G09G3/32 , G09G3/3258 , G09G3/3291 , G09G2300/0413 , G09G2320/0285 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2360/145
摘要： A system and method for determining and applying characterization correlation curves for aging effects on an organic light organic light emitting device (OLED) based pixel is disclosed. A first stress condition is applied to a reference pixel having a drive transistor and an OLED. An output voltage based on a reference current is measured periodically to determine an electrical characteristic of the reference pixel under the first predetermined stress condition. The luminance of the reference pixel is measured periodically to determine an optical characteristic of the reference pixel. A characterization correlation curve corresponding to the first stress condition including the determined electrical and optical characteristic of the reference pixel is stored. The stress condition of an active pixel is determined and a compensation voltage is determined by correlating the stress condition of the active pixel with the curves of the predetermined stress conditions.
摘要翻译：公开了一种用于确定和应用有机光有机发光器件（OLED）基于像素的老化效应的表征相关曲线的系统和方法。对具有驱动晶体管和OLED的参考像素施加第一应力条件。周期性地测量基于参考电流的输出电压，以确定在第一预定应力条件下参考像素的电特性。周期性地测量参考像素的亮度，以确定参考像素的光学特性。存储对应于包括所确定的参考像素的电特性和光学特性的第一应力条件的表征相关曲线。确定有源像素的应力条件，并通过将有源像素的应力条件与预定应力条件的曲线相关联来确定补偿电压。

4. 发明申请

US20110191042A1 SYSTEM AND METHODS FOR EXTRACTING CORRELATION CURVES FOR AN ORGANIC LIGHT EMITTING DEVICE 有权
标题翻译：用于提取有机发光装置的相关曲线的系统和方法
公开(公告)号：US20110191042A1
公开(公告)日：2011-08-04
申请号：US13020252
申请日：2011-02-03
申请人： Gholamreza Chaji , Javid Jaffari , Arokia Nathan
发明人： Gholamreza Chaji , Javid Jaffari , Arokia Nathan
IPC分类号： G06F19/00
CPC分类号： G09G3/006 , G09G3/32 , G09G3/3258 , G09G3/3291 , G09G2300/0413 , G09G2320/0285 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2360/145
摘要： A system and method for determining and applying characterization correlation curves for aging effects on an organic light organic light emitting device (OLED) based pixel is disclosed. A first stress condition is applied to a reference pixel having a drive transistor and an OLED. An output voltage based on a reference current is measured periodically to determine an electrical characteristic of the reference pixel under the first predetermined stress condition. The luminance of the reference pixel is measured periodically to determine an optical characteristic of the reference pixel. A characterization correlation curve corresponding to the first stress condition including the determined electrical and optical characteristic of the reference pixel is stored. Characterization correlation curves for other predetermined stress conditions are also stored based on application of the predetermined stress conditions on other reference pixels. The stress condition of an active pixel is determined and a compensation voltage is determined by correlating the stress condition of the active pixel with the curves of the predetermined stress conditions.
摘要翻译：公开了一种用于确定和应用有机光有机发光器件（OLED）基于像素的老化效应的表征相关曲线的系统和方法。对具有驱动晶体管和OLED的参考像素施加第一应力条件。周期性地测量基于参考电流的输出电压，以确定在第一预定应力条件下参考像素的电特性。周期性地测量参考像素的亮度，以确定参考像素的光学特性。存储对应于包括所确定的参考像素的电特性和光学特性的第一应力条件的表征相关曲线。基于预定应力条件对其它参考像素的应用，也存储其它预定应力条件的表征相关曲线。确定有源像素的应力条件，并通过将有源像素的应力条件与预定应力条件的曲线相关联来确定补偿电压。

5. 发明申请

US20120299973A1 Adaptive Feedback System For Compensating For Aging Pixel Areas With Enhanced Estimation Speed 有权
标题翻译：用于补偿老化像素区域的自适应反馈系统，具有增强的估计速度
公开(公告)号：US20120299973A1
公开(公告)日：2012-11-29
申请号：US13291486
申请日：2011-11-08
申请人： Javid Jaffari , Gholamreza Chaji , Abdorreza Heidari
发明人： Javid Jaffari , Gholamreza Chaji , Abdorreza Heidari
IPC分类号： G09G5/10
CPC分类号： G09G3/006 , G09G3/3208 , G09G3/3233 , G09G3/3258 , G09G3/3266 , G09G3/3283 , G09G2310/0254 , G09G2310/0256 , G09G2310/08 , G09G2320/0233 , G09G2320/0242 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2320/0666 , G09G2360/145
摘要： A local priority-based scanning scheme that focuses scanning to areas of a display panel whose measured characteristics are under continuous change (e.g., aging or relaxation). The algorithm identifies areas or regions needing compensation, using a current measurement from a single pixel in an area as a candidate to determine whether the rest of the region needs further compensation. The algorithm thus detects newly changed areas quickly, focusing time-consuming measurements on those areas that need high attention. Optionally, neighboring pixels sharing the same state (e.g., aging or overcompensated) as the measured pixel can be adjusted automatically given the likelihood that the neighboring pixels will also require compensation if the measured pixel needs compensation.
摘要翻译：本地基于优先级的扫描方案，其将扫描重点集中在其测量特征处于连续变化（例如，老化或松弛）的显示面板的区域。该算法识别需要补偿的区域或区域，使用来自区域中的单个像素的当前测量作为候选来确定该区域的其余部分是否需要进一步的补偿。因此，该算法可以快速检测新改变的区域，将需要高度关注的那些区域的耗时测量集中起来。可选地，如果所测量的像素需要补偿，相邻像素也将需要补偿的可能性，可以自动调整共享与测量像素相同的状态（例如，老化或过补偿）的相邻像素。

6. 发明授权

US09466240B2 Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed 有权
标题翻译：用于补偿老化像素区域的自适应反馈系统，具有增强的估计速度
公开(公告)号：US09466240B2
公开(公告)日：2016-10-11
申请号：US13291486
申请日：2011-11-08
申请人： Javid Jaffari , Gholamreza Chaji , Abdorreza Heidari
发明人： Javid Jaffari , Gholamreza Chaji , Abdorreza Heidari
IPC分类号： G09G5/10 , G09G3/32 , G09G3/00
CPC分类号： G09G3/006 , G09G3/3208 , G09G3/3233 , G09G3/3258 , G09G3/3266 , G09G3/3283 , G09G2310/0254 , G09G2310/0256 , G09G2310/08 , G09G2320/0233 , G09G2320/0242 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2320/0666 , G09G2360/145
摘要： A local priority-based scanning scheme that focuses scanning to areas of a display panel whose measured characteristics are under continuous change (e.g., aging or relaxation). The algorithm identifies areas or regions needing compensation, using a current measurement from a single pixel in an area as a candidate to determine whether the rest of the region needs further compensation. The algorithm thus detects newly changed areas quickly, focusing time-consuming measurements on those areas that need high attention. Optionally, neighboring pixels sharing the same state (e.g., aging or overcompensated) as the measured pixel can be adjusted automatically given the likelihood that the neighboring pixels will also require compensation if the measured pixel needs compensation.
摘要翻译：本地基于优先级的扫描方案，其将扫描重点集中在其测量特征处于连续变化（例如，老化或松弛）的显示面板的区域。该算法识别需要补偿的区域或区域，使用来自区域中的单个像素的当前测量作为候选来确定该区域的其余部分是否需要进一步的补偿。因此，该算法可以快速检测新改变的区域，将需要高度关注的那些区域的耗时测量集中起来。可选地，如果所测量的像素需要补偿，相邻像素也将需要补偿的可能性，可以自动调整共享与测量像素相同的状态（例如，老化或过补偿）的相邻像素。

7. 发明授权

US08914246B2 System and methods for aging compensation in AMOLED displays 有权
标题翻译： AMOLED显示屏老化补偿系统和方法
公开(公告)号：US08914246B2
公开(公告)日：2014-12-16
申请号：US12956842
申请日：2010-11-30
申请人： Gholamreza Chaji , Joseph Marcel Dionne , Yaser Azizi , Javid Jaffari , Abbas Hormati , Tong Liu , Stefan Alexander
发明人： Gholamreza Chaji , Joseph Marcel Dionne , Yaser Azizi , Javid Jaffari , Abbas Hormati , Tong Liu , Stefan Alexander
IPC分类号： G01R31/00 , G09G3/32 , G09G3/00
CPC分类号： G09G3/006 , G01R31/44 , G09G3/3233 , G09G3/3283 , G09G2300/0842 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/043 , G09G2320/045
摘要： Methods and systems to provide baseline measurements for aging compensation for a display device are disclosed. An example display system has a plurality of active pixels and a reference pixel. Common input signals are provided to the reference pixel and the plurality of active pixels. The outputs of the reference pixel is measured and compared to the output of the active pixels to determine aging effects. The display system may also be tested applying a first known reference current to a current comparator with a second variable reference current and the output of a device under test such as one of the pixels. The variable reference current is adjusted until the second current and the output of the device under test is equivalent of the first current. The resulting current of the device under test is stored in a look up table for a baseline for aging measurements during the display system operation. The display system may also be tested to determine production flaws by determining anomalies such as short circuits in pixel components such as OLEDs and drive transistors.
摘要翻译：公开了提供用于显示装置的老化补偿的基线测量的方法和系统。示例性显示系统具有多个有源像素和参考像素。公共输入信号被提供给参考像素和多个有源像素。测量参考像素的输出并将其与有源像素的输出进行比较，以确定老化效应。还可以使用第二可变参考电流和正在测试的设备的输出（诸如像素之一）将显示系统应用于当前比较器的第一已知参考电流。调整可变参考电流，直到第二个电流和被测器件的输出等于第一个电流。在显示系统操作期间，被测器件的结果电流存储在查询表中，用于老化测量的基线。也可以通过确定诸如OLED和驱动晶体管等像素部件中的短路的异常来测试显示系统来确定生产缺陷。

8. 发明授权

US08907991B2 System and methods for thermal compensation in AMOLED displays 有权
标题翻译： AMOLED显示屏中的热补偿系统和方法
公开(公告)号：US08907991B2
公开(公告)日：2014-12-09
申请号：US12958655
申请日：2010-12-02
申请人： Javid Jaffari , Tong Liu , Gholamreza Chaji
发明人： Javid Jaffari , Tong Liu , Gholamreza Chaji
IPC分类号： G09G5/10 , G09G3/32 , G06F17/50
CPC分类号： G09G3/3258 , G06F17/5018 , G06F2217/80 , G09G3/3233 , G09G3/3291 , G09G2300/0819 , G09G2310/0289 , G09G2320/0233 , G09G2320/0271 , G09G2320/029 , G09G2320/041 , G09G2320/0626 , G09G2320/0693
摘要： Disclosed is a circuit and technique to determine the temperature of an AMOLED display in order to calibrate programming data signals. The temperature of selected pixels of a plurality of pixels in an AMOLED display is measured via one of several disclosed methods. A thermal sensor for the selected pixels may be used. A measurement of output voltage data may be used to estimate temperature. A finite element analysis model may be used based on consumed power of the selected pixel. The temperature data for the selected pixel is then interpolated to the neighboring non-selected pixels to estimate the temperature of those pixels.
摘要翻译：公开了一种用于确定AMOLED显示器的温度以便校准编程数据信号的电路和技术。通过几种公开的方法之一测量AMOLED显示器中的多个像素的选定像素的温度。可以使用用于所选像素的热传感器。可以使用输出电压数据的测量来估计温度。可以基于所选像素的消耗功率来使用有限元分析模型。然后将所选择的像素的温度数据内插到相邻的未选择的像素以估计这些像素的温度。

9. 发明申请

US20120139955A1 SYSTEM AND METHODS FOR THERMAL COMPENSATION IN AMOLED DISPLAYS 有权
标题翻译：用于在显示器中进行热补偿的系统和方法
公开(公告)号：US20120139955A1
公开(公告)日：2012-06-07
申请号：US12958655
申请日：2010-12-02
申请人： Javid Jaffari , Gholamreza Chaji , Tong Liu
发明人： Javid Jaffari , Gholamreza Chaji , Tong Liu
IPC分类号： G09G5/10 , G09G3/30
CPC分类号： G09G3/3258 , G06F17/5018 , G06F2217/80 , G09G3/3233 , G09G3/3291 , G09G2300/0819 , G09G2310/0289 , G09G2320/0233 , G09G2320/0271 , G09G2320/029 , G09G2320/041 , G09G2320/0626 , G09G2320/0693
摘要： Disclosed is a circuit and technique to determine the temperature of an AMOLED display in order to calibrate programming data signals. The temperature of selected pixels of a plurality of pixels in an AMOLED display is measured via one of several disclosed methods. A thermal sensor for the selected pixels may be used. A measurement of output voltage data may be used to estimate temperature. A finite element analysis model may be used based on consumed power of the selected pixel. The temperature data for the selected pixel is then interpolated to the neighboring non-selected pixels to estimate the temperature of those pixels.
摘要翻译：公开了一种用于确定AMOLED显示器的温度以便校准编程数据信号的电路和技术。通过几种公开的方法之一测量AMOLED显示器中的多个像素的选定像素的温度。可以使用用于所选像素的热传感器。可以使用输出电压数据的测量来估计温度。可以基于所选像素的消耗功率来使用有限元分析模型。然后将所选择的像素的温度数据内插到相邻的未选择的像素以估计这些像素的温度。

10. 发明申请

US20110130981A1 SYSTEM AND METHODS FOR AGING COMPENSATION IN AMOLED DISPLAYS 有权
标题翻译：用于在AMOLED显示器中老化补偿的系统和方法
公开(公告)号：US20110130981A1
公开(公告)日：2011-06-02
申请号：US12956842
申请日：2010-11-30
申请人： Gholamreza Chaji , Joseph Marcel Dionne , Yaser Azizi , Javid Jaffari , Abbas Hormati , Tong Liu , Stefan Alexander
发明人： Gholamreza Chaji , Joseph Marcel Dionne , Yaser Azizi , Javid Jaffari , Abbas Hormati , Tong Liu , Stefan Alexander
IPC分类号： G06F19/00 , G09G5/10 , G01R31/28
CPC分类号： G09G3/006 , G01R31/44 , G09G3/3233 , G09G3/3283 , G09G2300/0842 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/043 , G09G2320/045
摘要： Methods and systems to provide baseline measurements for aging compensation for a display device are disclosed. An example display system has a plurality of active pixels and a reference pixel. Common input signals are provided to the reference pixel and the plurality of active pixels. The outputs of the reference pixel is measured and compared to the output of the active pixels to determine aging effects. The display system may also be tested applying a first known reference current to a current comparator with a second variable reference current and the output of a device under test such as one of the pixels. The variable reference current is adjusted until the second current and the output of the device under test is equivalent of the first current. The resulting current of the device under test is stored in a look up table for a baseline for aging measurements during the display system operation. The display system may also be tested to determine production flaws by determining anomalies such as short circuits in pixel components such as OLEDs and drive transistors.
摘要翻译：公开了提供用于显示装置的老化补偿的基线测量的方法和系统。示例性显示系统具有多个有源像素和参考像素。公共输入信号被提供给参考像素和多个有源像素。测量参考像素的输出并将其与有源像素的输出进行比较，以确定老化效应。还可以使用第二可变参考电流和正在测试的设备的输出（诸如像素之一）将显示系统应用于当前比较器的第一已知参考电流。调整可变参考电流，直到第二个电流和被测器件的输出等于第一个电流。在显示系统操作期间，被测器件的结果电流存储在查询表中，用于老化测量的基线。也可以通过确定诸如OLED和驱动晶体管等像素部件中的短路的异常来测试显示系统来确定生产缺陷。

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