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1. 发明授权

US08279143B2 OLED luminance degradation compensation 有权
标题翻译： OLED亮度降级补偿
公开(公告)号：US08279143B2
公开(公告)日：2012-10-02
申请号：US13179963
申请日：2011-07-11
申请人： Arokia Nathan , Gholamreza Chaji
发明人： Arokia Nathan , Gholamreza Chaji
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G3/3241 , G09G3/3283 , G09G2300/0465 , G09G2300/0819 , G09G2300/0842 , G09G2320/0233 , G09G2320/029 , G09G2320/0295 , G09G2320/041 , G09G2320/043 , G09G2320/045 , H05B33/0896
摘要： A system and method are disclosed for determining a pixel capacitance. The pixel capacitance is correlated to a pixel age to determine a current correction factor used for compensating the pixel drive current to account for luminance degradation of the pixel that results from the pixel aging.
摘要翻译：公开了一种用于确定像素电容的系统和方法。像素电容与像素年龄相关，以确定用于补偿像素驱动电流的当前校正因子，以解决由像素老化导致的像素的亮度劣化。

2. 发明申请

US20110069096A1 Driving System For Active-Matrix Displays 有权
标题翻译：主动矩阵显示驱动系统
公开(公告)号：US20110069096A1
公开(公告)日：2011-03-24
申请号：US12878439
申请日：2010-09-09
申请人： Kongning Li , Vasudha Gupta , Gholamreza Chaji , Arokia Nathan
发明人： Kongning Li , Vasudha Gupta , Gholamreza Chaji , Arokia Nathan
IPC分类号： G09G5/10
CPC分类号： G09G3/2081 , G09G3/2022 , G09G3/3225 , G09G2320/0276 , G09G2320/043 , G09G2320/0626 , G09G2320/0673 , G09G2360/144 , G09G2360/16
摘要： A system is provided for using raw grayscale image data, representing images to be displayed in successive frames, to drive a display having pixels that include a drive transistor and an organic light emitting device. The system defines high and low ranges of raw grayscale image data, and determines whether the raw grayscale image data for each pixel falls within the high range or the low range. Raw grayscale image data that falls within the low range is converted to higher grayscale values, and the pixels are driven with currents corresponding to the higher grayscale values during time periods that are shorter than complete frame time periods. Raw grayscale image data that falls within the high range is converted to higher grayscale values, and the pixels are driven with currents corresponding to the higher grayscale values during time periods that are shorter than complete frame time periods and different from the time periods of the low range image data. When the raw grayscale image data is adjusted according to a preselected gamma curve before using that data to drive the pixels, the high and low ranges may be selected according to how well the gamma curve corrects the raw grayscale image data within the ranges.
摘要翻译：提供了一种系统，用于使用原始灰度级图像数据，表示要在连续帧中显示的图像，以驱动具有包括驱动晶体管和有机发光装置的像素的显示。该系统定义原始灰度级图像数据的高范围和低范围，并确定每个像素的原始灰度图像数据是否落在高范围或低范围内。落在低范围内的原始灰度图像数据被转换为较高的灰度值，并且在比完整帧时间段短的时间段期间，以对应于较高灰度值的电流驱动像素。落在高范围内的原始灰度图像数据被转换为较高的灰度值，并且在比完整的帧时间段短的时间段内与不同于低的时间段的时间段内的较高灰度值的电流驱动像素范围图像数据。当在使用该数据驱动像素之前根据预先选择的伽马曲线调整原始灰度图像数据时，可以根据伽马曲线如何校正范围内的原始灰度图像数据来选择高和低范围。

3. 发明申请

US20060176250A1 Method and system for programming and driving active matrix light emitting devcie pixel 有权
标题翻译：用于编程和驱动有源矩阵发光器件的方法和系统
公开(公告)号：US20060176250A1
公开(公告)日：2006-08-10
申请号：US11298240
申请日：2005-12-07
申请人： Arokia Nathan , Gholamreza Chaji , Peyman Servati
发明人： Arokia Nathan , Gholamreza Chaji , Peyman Servati
IPC分类号： G09G3/30
CPC分类号： G09G3/3258 , G09G3/3233 , G09G3/3696 , G09G2300/0465 , G09G2300/0842 , G09G2300/0852 , G09G2310/0262 , G09G2310/06 , G09G2310/061 , G09G2320/043
摘要： Method and system for programming and driving active matrix light emitting device pixel is provided. The pixel is a voltage programmed pixel circuit, and has a light emitting device, a driving transistor and a storage capacitor. The pixel has a programming cycle having a plurality of operating cycles, and a driving cycle. During the programming cycle, the voltage of the connection between the OLED and the driving transistor is controlled so that the desired gate-source voltage of a driving transistor is stored in a storage capacitor.
摘要翻译：提供了编程和驱动有源矩阵发光器件像素的方法和系统。像素是电压编程像素电路，并且具有发光器件，驱动晶体管和存储电容器。像素具有具有多个操作周期的编程周期和驱动周期。在编程周期期间，控制OLED和驱动晶体管之间的连接电压，使得驱动晶体管的期望的栅极 - 源极电压被存储在存储电容器中。

4. 发明申请

US20060158402A1 Method and system for programming, calibrating and driving a light emitting device display 有权
公开(公告)号：US20060158402A1
公开(公告)日：2006-07-20
申请号：US11304162
申请日：2005-12-15
申请人： Arokia Nathan , Gholamreza Chaji , Peyman Servati
发明人： Arokia Nathan , Gholamreza Chaji , Peyman Servati
IPC分类号： G09G3/32
CPC分类号： G01R19/0092 , G09G3/006 , G09G3/3208 , G09G3/3233 , G09G3/3241 , G09G3/3258 , G09G3/3283 , G09G3/3291 , G09G2300/0819 , G09G2300/0842 , G09G2310/0262 , G09G2310/027 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/043 , G09G2320/045 , G09G2320/0693
摘要： A method and system for programming, calibrating and driving a light emitting device display is provided. The system may include extracting a time dependent parameter of a pixel for calibration.

5. 发明授权

US09370075B2 System and method for fast compensation programming of pixels in a display 有权
标题翻译：用于显示器中像素的快速补偿编程的系统和方法
公开(公告)号：US09370075B2
公开(公告)日：2016-06-14
申请号：US13481789
申请日：2012-05-26
申请人： Gholamreza Chaji , Jackson Chi Sun Lai , Yaser Azizi , Maran Ran Ma , Arokia Nathan
发明人： Gholamreza Chaji , Jackson Chi Sun Lai , Yaser Azizi , Maran Ran Ma , Arokia Nathan
IPC分类号： H05B37/02 , G09G3/32
CPC分类号： G09G3/3233 , G09G3/3283 , G09G3/3291 , G09G2300/0465 , G09G2300/0819 , G09G2300/0842 , G09G2300/0852 , G09G2310/0259 , G09G2310/0262 , G09G2310/027 , G09G2310/066 , G09G2320/0233 , G09G2320/043 , G09G2330/021 , G09G2330/023 , H05B37/02
摘要： Circuits for programming a circuit with decreased programming time are provided. Such circuits include a storage device such as a capacitor for storing display information and for ensuring a driving device such as a driving transistor drives a light emitting device according to the display information. To increase programming time, the pixel circuits may be pre-charged or a biasing current may be applied to charge and/or discharge a data line and/or the driving device. Aspects of the present disclosure allow for the biasing current to drain partially through the storage device to allow the portion of the biasing current applied to the driving device to remain small while the data line discharges. Furthermore, the present disclosure provides display architectures and operation schemes for display arranged in segments each including a plurality of pixel circuits.
摘要翻译：提供了用于编程具有减少的编程时间的电路的电路。这种电路包括诸如用于存储显示信息的电容器的存储装置，并且用于确保诸如驱动晶体管的驱动装置根据显示信息驱动发光装置。为了增加编程时间，可以对像素电路进行预充电，或者可以施加偏置电流来对数据线和/或驱动装置进行充电和/或放电。本公开的方面允许偏置电流部分地通过存储装置排出，以允许施加到驱动装置的偏置电流的一部分在数据线放电时保持较小。此外，本公开提供了显示器的显示架构和操作方案，其布置成包括多个像素电路的段。

6. 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。

7. 发明授权

US08497828B2 Sharing switch TFTS in pixel circuits 有权
标题翻译：在像素电路中共享切换TFTS
公开(公告)号：US08497828B2
公开(公告)日：2013-07-30
申请号：US12944477
申请日：2010-11-11
申请人： Gholamreza Chaji , Arokia Nathan
发明人： Gholamreza Chaji , Arokia Nathan
IPC分类号： G09G5/00
CPC分类号： G09G5/18 , G09G3/3225 , G09G3/3283 , G09G3/3291 , G09G2300/0465 , G09G2300/0814 , G09G2300/0819 , G09G2300/0852 , G09G2310/0218 , G09G2310/0262 , G09G2320/0233 , G09G2320/0693
摘要： A circuit and driving technique to improve the display resolution of an AMOLED display. Sharing of switch transistors between several sub-pixels in the display leads to improved manufacturing yield by minimizing the number of transistors used. The method also allows for conventional sequential scan driving to be used. The circuit includes a shared switch transistor connected between a voltage data line and a shared line that is connected to a reference voltage through a reference voltage transistor, a first pixel including a first light emitting device configured to be current driven by a first drive circuit connected to the shared line through a first storage device, a second pixel including a second light emitting device configured to be current driven by a second drive circuit connected to the shared line through a second storage device, and a reference current line configured to apply a bias current to the first and second drive circuits.
摘要翻译：一种用于提高AMOLED显示器的显示分辨率的电路和驱动技术。在显示器中的几个子像素之间共享开关晶体管通过最小化使用的晶体管的数量来提高制造产量。该方法还允许使用常规的顺序扫描驱动。该电路包括连接在通过参考电压晶体管连接到参考电压的电压数据线和共享线之间的共享开关晶体管，包括第一发光器件的第一像素，该第一发光器件被配置为由连接到第一驱动电路的电流驱动通过第一存储设备到共享线路，第二像素包括被配置为由通过第二存储设备连接到共享线路的第二驱动电路驱动的第二发光器件，以及被配置为施加偏置的参考电流线电流到第一和第二驱动电路。

8. 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。

9. 发明授权

US09093019B2 Driving system for active-matrix displays 有权
标题翻译：有源矩阵显示驱动系统
公开(公告)号：US09093019B2
公开(公告)日：2015-07-28
申请号：US12878439
申请日：2010-09-09
申请人： Kongning Li , Vasudha Gupta , Gholamreza Chaji , Arokia Nathan
发明人： Kongning Li , Vasudha Gupta , Gholamreza Chaji , Arokia Nathan
IPC分类号： G09G3/22 , G09G3/20 , G09G3/32
CPC分类号： G09G3/2081 , G09G3/2022 , G09G3/3225 , G09G2320/0276 , G09G2320/043 , G09G2320/0626 , G09G2320/0673 , G09G2360/144 , G09G2360/16
摘要： A system is provided for using raw grayscale image data, representing images to be displayed in successive frames, to drive a display having pixels that include a drive transistor and an organic light emitting device. The system determines whether the raw grayscale image data for each pixel falls within a high range or a low range. Raw grayscale image data that falls within the low range is converted to higher grayscale values, and the pixels are driven with currents corresponding to the higher grayscale values during time periods that are shorter than complete frame time periods. Raw grayscale image data that falls within the high range is converted to higher grayscale values, and the pixels are driven with currents corresponding to the higher grayscale values during time periods that are shorter than complete frame time periods and different from the time periods of the low range image data.
摘要翻译：提供了一种系统，用于使用原始灰度级图像数据，表示要在连续帧中显示的图像，以驱动具有包括驱动晶体管和有机发光装置的像素的显示。系统确定每个像素的原始灰度图像数据是否落在高范围或低范围内。落在低范围内的原始灰度图像数据被转换为较高的灰度值，并且在比完整帧时间段短的时间段期间，以对应于较高灰度值的电流驱动像素。落在高范围内的原始灰度图像数据被转换为较高的灰度值，并且在比完整的帧时间段短的时间段内与不同于低的时间段的时间段内的较高灰度值的电流驱动像素范围图像数据。

10. 发明授权

US08937632B2 Driving system for active-matrix displays 有权
标题翻译：有源矩阵显示驱动系统
公开(公告)号：US08937632B2
公开(公告)日：2015-01-20
申请号：US13365391
申请日：2012-02-03
申请人： Kongning Li , Vasudha Gupta , Gholamreza Chaji , Arokia Nathan
发明人： Kongning Li , Vasudha Gupta , Gholamreza Chaji , Arokia Nathan
IPC分类号： G09G5/10 , G09G3/30
CPC分类号： G09G3/3233 , G09G3/2022 , G09G3/2081 , G09G3/3225 , G09G2320/0276 , G09G2320/043 , G09G2320/0626 , G09G2320/0673 , G09G2360/144 , G09G2360/16
摘要： Raw grayscale image data, representing images to be displayed in successive frames, is used to drive a display having pixels that include a drive transistor and an organic light emitting device by dividing each frame into at least first and second-frames, and supplying each pixel with a drive current that is higher in the first sub-frame than in the second sub-frame for raw grayscale values in a first preselected range, and higher in the second sub-frame than in the first sub-frame for raw grayscale values in a second preselected range. The display may be an active matrix display, such as an AMOLED display.
摘要翻译：用于表示要在连续帧中显示的图像的原始灰度图像数据用于通过将每个帧划分成至少第一和第二帧来驱动具有包括驱动晶体管和有机发光器件的像素的显示器，并且提供每个像素驱动电流在第一子帧中比在第二子帧中高于在第一预选范围内的原始灰度值的驱动电流，并且在第二子帧中比在第一子帧中对于原始灰度值的驱动电流高第二个预选范围。显示器可以是有源矩阵显示器，例如AMOLED显示器。

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