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1. 发明公开

EP1485903A1 DISPLAY DRIVER CIRCUITS 审中-公开
标题翻译：数据驱动电路对无源矩阵OLED显示器
公开(公告)号：EP1485903A1
公开(公告)日：2004-12-15
申请号：EP03744444.5
申请日：2003-03-14
申请人： Cambridge Display Technology Limited , Smith, Euan Christopher , Routley, Paul Richard
发明人： SMITH, Euan, C.,Cambridge Display Technology Ltd. , ROUTLEY, Paul, R.,Cambridge Display Tech. Ltd.
IPC分类号： G09G3/32
CPC分类号： G09G3/3216 , G09G3/3266 , G09G2310/027 , G09G2330/021 , Y02E60/36
摘要： Display driver circuits are described for driving organic light emitting diode displays, particularly passive matrix displays, with greater efficiency. The display drivers comprise a controllable current generator (506) to provide a variable current drive output (508) to an OLED display, the current generator comprising at least one bipolar transistor (524) in series with the current drive output. The display brightness is adjustable by controlling the current generator to vary the current drive to the display. Preferably the bipolar transistor has an emitter terminal substantially directly connected to a power supply line of the driver to reduce losses in the driver. A corresponding method is also described. By employing a bipolar transistor current drive and varying display brightness by controlling the current an efficient driver-display combination is obtained.

2. 发明专利

AU2003215745A1 DISPLAY DRIVER CIRCUITS 未知
公开(公告)号：AU2003215745A1
公开(公告)日：2003-09-29
申请号：AU2003215745
申请日：2003-03-14
申请人： ROUTLEY PAUL RICHARD , CAMBRIDGE DISPLAY TECH LTD , SMITH EUAN CHRISTOPHER
发明人： SMITH EUAN CHRISTOPHER , ROUTLEY PAUL RICHARD
IPC分类号： G09G3/32
摘要： Display driver circuits are described for driving organic light emitting diode displays, particularly passive matrix displays, with greater efficiency. The display drivers comprise a controllable current generator to provide a variable current drive output to an OLED display, the current generator comprising at least one bipolar transistor in series with the current drive output. The display brightness is adjustable by controlling the current generator to vary the current drive to the display. Preferably the bipolar transistor has an emitter terminal substantially directly connected to a power supply line of the driver to reduce losses in the driver. A corresponding method is also described. By employing a bipolar transistor current drive and varying display brightness by controlling the current an efficient driver-display combination is obtained.

3. 发明申请

WO2009056877A1 PIXEL DRIVER CIRCUITS 审中-公开
标题翻译：像素驱动电路
公开(公告)号：WO2009056877A1
公开(公告)日：2009-05-07
申请号：PCT/GB2008/051007
申请日：2008-10-29
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , RANKOV, Aleksandra , SMITH, Euan Christopher
发明人： RANKOV, Aleksandra , SMITH, Euan Christopher
IPC分类号： G09G3/32
CPC分类号： G09G3/3283 , G09G3/3233 , G09G3/325 , G09G3/3291 , G09G2300/0465 , G09G2300/0819 , G09G2300/0852 , G09G2300/0861 , G09G2300/0876 , G09G2310/0256 , G09G2320/043 , G09G2360/148
摘要： This invention relates to pixel driver circuits for active matrix optoelectronic devices, in particular OLED (organic light emitting diodes) displays.We describe an active matrix optoelectronic device having a plurality of active matrix pixels each said pixel including a pixel circuit comprising a thin film transistor (TFT) for driving the pixel and a pixel capacitor for storing a pixel value, whereinsaid TFT comprises a TFT with a floating gate.
摘要翻译：本发明涉及用于有源矩阵光电子器件，特别是OLED（有机发光二极管）显示器的像素驱动器电路。我们描述了具有多个有源矩阵像素的有源矩阵光电子器件，每个所述像素包括像素电路，该像素电路包括薄膜晶体管（TFT）和用于存储像素值的像素电容器，其中TFT包括具有浮动栅极的TFT。

4. 发明申请

WO2007107793A1 IMAGE PROCESSING SYSTEMS 审中-公开
标题翻译：图像处理系统
公开(公告)号：WO2007107793A1
公开(公告)日：2007-09-27
申请号：PCT/GB2007/050139
申请日：2007-03-21
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , SMITH, Euan, Christopher
发明人： SMITH, Euan, Christopher
IPC分类号： G09G3/30 , G09G3/32
CPC分类号： G09G3/3283 , G09G3/2022 , G09G3/3216 , G09G2310/0205 , G09G2320/043 , G09G2330/025 , G09G2360/16
摘要： Image Processing Systems This invention generally relates to image processing systems. More particularly it relates to systems and methods for displaying images using mult i-line addressing (MLA) or total matrix addressing (TMA) techniques, and to techniques for post- processing of data for display generated by these techniques. Embodiments of the invention are particularly useful for driving OLED (organic light emitting diode) displays. We describe a method of driving an electroluminescent display to display an image using a plurality of temporal sub-frames, data for a said sub-frame comprising a first set of drive values (R;C) and second set of drive values (C;R) for driving respective first and second axes of said display, a said sub-frame having an associated sub-frame display time. The method comprises: determining a said sub-frame display time for a displayed sub-frame responsive to one or more of said drive values for the sub-frame; and driving said display to display said temporal sub-frames for respective said sub- frame display times.
摘要翻译：图像处理系统本发明一般涉及图像处理系统。更具体地说，涉及使用多线寻址（MLA）或总矩阵寻址（TMA）技术来显示图像的系统和方法，以及用于后处理由这些技术产生的显示的数据的技术。本发明的实施例对于驱动OLED（有机发光二极管）显示器是特别有用的。我们描述了一种使用多个时间子帧驱动电致发光显示器来显示图像的方法，所述子帧的数据包括第一组驱动值（R; C）和第二组驱动值（C; C）; R），用于驱动所述显示器的相应第一和第二轴，所述子帧具有相关联的子帧显示时间。该方法包括：响应于子帧的一个或多个所述驱动值，确定所显示的子帧的所述子帧显示时间; 并且驱动所述显示器以显示相应的所述子帧显示时间的所述时间子帧。

5. 发明申请

WO2003107313A3 DATA DRIVER CIRCUIT FOR OLED DISPLAY 审中-公开
公开(公告)号：WO2003107313A3
公开(公告)日：2003-12-24
申请号：PCT/GB2003/002529
申请日：2003-06-11
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , ROUTLEY, Paul, Richard , SMITH, Euan, Christopher
发明人： ROUTLEY, Paul, Richard , SMITH, Euan, Christopher
IPC分类号： G09G3/32
摘要： This invention generally relates to display driver circuits for electro-optic displays, and more particularly relates to circuits and methods for driving active matrix organic light emitting diode displays with greater efficiency. A display driver (800) for an electroluminescent display (802), comprises a plurality of electroluminescent display elements each associated with a display element driver circuit (820), each said display element driver circuit including a drive transistor having a control connection for driving the associated display element in accordance with a voltage on the control connection. The display driver comprises at least one display element brightness controller (846) to provide an output to drive a said control connection to control the electroluminescent output from a said display element. A voltage sensor (854, 858) senses the voltage on a said control connection; and a power controller (860) for controls an adjustable power supply for providing an adjustable voltage to said electroluminescent display to power said drive transistors for driving said display elements. The power controller is configured to provide a control signal to adjust said power supply voltage in response to said sensed voltage.

6. 发明申请

WO2003038798A2 DISPLAY DRIVER CIRCUITS 审中-公开
标题翻译：显示驱动器电路
公开(公告)号：WO2003038798A2
公开(公告)日：2003-05-08
申请号：PCT/GB2002/004781
申请日：2002-10-23
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , SMITH, Euan, Christopher , ROUTLEY, Paul, Richard
发明人： SMITH, Euan, Christopher , ROUTLEY, Paul, Richard
IPC分类号： G09G3/32
CPC分类号： G09G3/3233 , G09G2300/0417 , G09G2300/0819 , G09G2300/0842 , G09G2300/088 , G09G2310/0262 , G09G2320/045 , G09G2360/148 , H01L27/3234 , H01L27/3269
摘要： Display driver circuitry for electro-optic displays, in particular active matrix displays using organic light emitting diodes. The circuitry comprises a driver to drive an electro-optic element in accordance with a drive voltage, a photosensitive device optically coupled to the electro-optic display element to pass a current dependent upon illumination reaching the photosensitive device, a first control device coupled between the photosensitive device and a data line and responsive to a first control signal on a first control line to couple the photosensitive device to the data line; and a second control device coupled between the photosensitive device and the driver and responsive to a second control signal on a second control line to couple the photosensitive device to the driver. The circuit can be operated in a number of different modes and provides flexible control of an electro-display element such as an organic LED pixel.
摘要翻译：显示器用于电光显示器的驱动电路，特别是使用有机发光二极管的有源矩阵显示器。该电路包括根据驱动电压驱动电光元件的驱动器，光耦合到电光显示元件以传递取决于到达光敏器件的照明的电流的光敏器件，耦合在电光元件之间的第一控制装置光敏器件和数据线，并响应第一控制线上的第一控制信号以将光敏器件耦合到数据线; 以及第二控制装置，其耦合在所述光敏装置与所述驱动器之间并响应于第二控制线上的第二控制信号以将所述光敏装置耦合到所述驱动器。该电路可以以多种不同的模式操作，并提供诸如有机LED像素之类的电子显示元件的灵活控制。

7. 发明申请

WO03021340A2 OPTOELECTRONIC DISPLAYS 审中-公开
标题翻译：光电显示
公开(公告)号：WO03021340A2
公开(公告)日：2003-03-13
申请号：PCT/GB0203935
申请日：2002-08-29
申请人： CAMBRIDGE DISPLAY TECH , SMITH EUAN CHRISTOPHER , GUNNER ALEC GORDON , HALLS JONATHAN J M
发明人： SMITH EUAN CHRISTOPHER , GUNNER ALEC GORDON , HALLS JONATHAN J M
IPC分类号： G09F9/30 , G09G3/32 , H01L27/32 , H01L51/00 , H01L51/30 , H01L51/40 , H01L51/50 , H01L51/52 , G02F1/00
CPC分类号： H01L27/3244 , G09G3/3225 , G09G2300/046 , G09G2300/0842 , H01L27/3211 , H01L51/0004 , H01L51/0037 , H01L51/0038 , H01L51/0043 , H01L51/0081 , H01L51/5036 , H01L51/5262
摘要： Apparatus and methods for providing displays based upon the principle of photoluminescence quenching are described. The invention includes a method of displaying information using photoluminescence quenching, the method comprising: providing an optoelectronic display comprising a photoluminescent material between a pair of electrodes; providing illumination for the photoluminescent material to cause the photoluminescent material to photoluminesce; and biassing the electrodes to at least partially quench said photoluminescence.
摘要翻译：描述了基于光致发光淬灭原理提供显示器的装置和方法。本发明包括使用光致发光淬灭来显示信息的方法，该方法包括：在一对电极之间提供包括光致发光材料的光电子显示器; 为光致发光材料提供照明以使光致发光材料发光; 并偏置电极以至少部分地熄灭所述光致发光。

8. 发明申请

WO2007107795A2 DATA PROCESSING HARDWARE 审中-公开
标题翻译：数据处理硬件
公开(公告)号：WO2007107795A2
公开(公告)日：2007-09-27
申请号：PCT/GB2007/050141
申请日：2007-03-21
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , SMITH, Euan, Christopher , LAWRENCE, Nicholas
发明人： SMITH, Euan, Christopher , LAWRENCE, Nicholas
IPC分类号： G06F17/16 , G09G3/36
CPC分类号： G06F17/16 , G09G3/2022 , G09G3/2081 , G09G3/3216 , G09G3/3283 , G09G2310/0208 , G09G2320/0276
摘要： This invention generally relates to data processing hardware, and more particularly to hardware accelerators and related methods for matrix factorisation especially non- negat ive matrix factorisation (NMF). Embodiments of the invention are particularly useful for driving electroluminescent displays such as OLED displays. A matrix factorisation hardware accelerator for determining a pair of factor matrices (R;C) which when multiplied together approximate a target matrix, the hardware accelerator comprising: an input to receive an input data matrix representing said target matrix; a first factor matrix memory for storing row and column data for a first factor matrix (R), said first factor matrix memory having a plurality of first data buses each associated with a respective block of said first factor matrix memory for accessing first factor matrix column data stored in the block; a second factor matrix memory for storing row and column data for a second factor matrix (C), said second factor matrix memory having a plurality of second data buses each associated with a respective block of said second factor matrix memory for accessing second factor matrix row data stored in the block; a matrix of processor blocks, each processor block having: a first processor block data bus coupled to one of said first data buses, a second processor block data bus coupled to one of said second data buses, and a result data output; a processor memory block for storing a portion of a matrix (Q) representing a difference between a product of said pair of factor matrices and said target matrix; and a data processor comprising at least one multiply-add unit, said data processor having a first input coupled to said processor memory block and a second input coupled to one or both of said first and second processor block data buses and having an output coupled to said result data output; and control circuitry to control writing of data from said input into said processor memory blocks of said matrix of processor blocks, to control reading of data from said first and second factor matrix memories for provision to said matrix of processor blocks, and to control writing of data derived from said result data outputs back to said first and second factor matrix memories to perform said matrix factorisation.
摘要翻译：本发明一般涉及数据处理硬件，更具体地涉及用于矩阵分解的硬件加速器和相关方法，特别是非负矩阵因子分解（NMF）。本发明的实施例对于驱动诸如OLED显示器的电致发光显示器特别有用。一种用于确定一对因子矩阵（R; C）的矩阵分解硬件加速器，当一对乘以目标矩阵时，所述硬件加速器包括：用于接收表示所述目标矩阵的输入数据矩阵的输入; 用于存储用于第一因子矩阵（R）的行和列数据的第一因子矩阵存储器，所述第一因子矩阵存储器具有多个第一数据总线，每个第一数据总线与所述第一因子矩阵存储器的相应块相关联，用于访问第一因子矩阵列存储在块中的数据; 用于存储第二因子矩阵（C）的行和列数据的第二因子矩阵存储器，所述第二因子矩阵存储器具有多个第二数据总线，每个第二数据总线与所述第二因子矩阵存储器的相应块相关联，用于访问第二因子矩阵行存储在块中的数据; 处理器块的矩阵，每个处理器块具有：耦合到所述第一数据总线之一的第一处理器块数据总线，耦合到所述第二数据总线之一的第二处理器块数据总线和结果数据输出; 处理器存储块，用于存储表示所述一对因子矩阵和所述目标矩阵的乘积之间的差的矩阵（Q）的一部分; 以及包括至少一个乘法单元的数据处理器，所述数据处理器具有耦合到所述处理器存储器块的第一输入和耦合到所述第一和第二处理器块数据总线中的一个或两者的第二输入，并且具有耦合到表示结果数据输出; 以及控制电路，用于控制将数据从所述输入写入到所述处理器块矩阵的所述处理器存储器块中，以控制从所述第一和第二因子矩阵存储器读取数据以供给所述矩阵的处理器块，并且控制写入从所述结果数据导出的数据输出回所述第一和第二因子矩阵存储器以执行所述矩阵分解。

9. 发明申请

WO2006067520A2 DIGITAL SIGNAL PROCESSING METHODS AND APPARATUS 审中-公开
标题翻译：数字信号处理方法和装置
公开(公告)号：WO2006067520A2
公开(公告)日：2006-06-29
申请号：PCT/GB2005/050219
申请日：2005-11-30
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , SMITH, Euan, Christopher , ROUTLEY, Paul, Richard , FODEN, Clare
发明人： SMITH, Euan, Christopher , ROUTLEY, Paul, Richard , FODEN, Clare
IPC分类号： G06F17/16 , G09G3/32
CPC分类号： G09G3/3216 , G06F17/16 , G09G2310/0208 , G09G2320/043
摘要： This invention generally relates to methods, apparatus and computer program code processing digital data using non-negative matrix factorisation. A method of digitally processing data in a data array defining a target matrix (X) using non-negative matrix factorisation to determine a pair of matrices (F, G), a first matrix of said pair determining a set of features for representing said data, a second matrix of said pair determining weights of said features, such that a product of said first and second matrices approximates said target matrix, the method comprising: inputting said target matrix data (X); selecting a row of said one of said first and second matrices and a column of the other of said first and second matrices; determining a target contribution (R) of said selected row and column to said target matrix; determining, subject to a non- negativity constraint, updated values for said selected row and column from said target contribution; and repeating said selecting and determining for the other rows and columns of said first and second matrices until all said rows and columns have been updated.
摘要翻译：本发明一般涉及使用非负矩阵因式分解处理数字数据的方法，装置和计算机程序代码。一种使用非负矩阵分解来定义目标矩阵（X）的数据阵列中的数据进行数字处理的方法，以确定一对矩阵（F，G），所述对的第一矩阵确定用于表示所述数据的一组特征所述对的第二矩阵确定所述特征的权重，使得所述第一和第二矩阵的乘积近似于所述目标矩阵，所述方法包括：输入所述目标矩阵数据（X）; 选择所述第一和第二矩阵中的所述一个的行和所述第一和第二矩阵中的另一个的列; 确定所述选择的行和列的目标贡献（R）到所述目标矩阵; 根据非消极性约束确定来自所述目标贡献的所述所选行和列的更新值; 并重复所述选择和确定所述第一和第二矩阵的其他行和列，直到所有所述行和列都被更新。

10. 发明申请

WO2003107313A2 DISPLAY DRIVER CIRCUITS 审中-公开
标题翻译：显示驱动电路
公开(公告)号：WO2003107313A2
公开(公告)日：2003-12-24
申请号：PCT/GB2003/002529
申请日：2003-06-11
申请人： CAMBRIDGE DISPLAY TECHNOLOGY LIMITED , ROUTLEY, Paul, Richard , SMITH, Euan, Christopher
发明人： ROUTLEY, Paul, Richard , SMITH, Euan, Christopher
IPC分类号： G09G
CPC分类号： G09G3/3233 , G09G3/325 , G09G3/3291 , G09G2300/0417 , G09G2300/0819 , G09G2300/0842 , G09G2300/088 , G09G2320/029 , G09G2320/045 , G09G2330/021 , G09G2360/148
摘要： This invention generally relates to display driver circuits for electro-optic displays, and more particularly relates to circuits and methods for driving active matrix organic light emitting diode displays with greater efficiency. A display driver (800) for an electroluminescent display (802), the display comprising a plurality of electroluminescent display elements each associated with a display element driver circuit (820), each said display element driver circuit including a drive transistor having a control connection for driving the associated display element in accordance with a voltage on the control connection, the display driver comprising at least one display element brightness controller (846) to provide an output to drive a said control connection to control the electroluminescent output from a said display element; a voltage sensor (854, 858) to sense the voltage on a said control connection; and a power controller (860) for controlling an adjustable power supply for providing an adjustable voltage to said electroluminescent display to power said drive transistors for driving said display elements, said power controller being configured to provide a control signal to adjust said power supply voltage in response to said sensed voltage.
摘要翻译：本发明总体上涉及用于电光显示器的显示驱动器电路，更具体地说，涉及用于以更高效率驱动有源矩阵有机发光二极管显示器的电路和方法。一种用于电致发光显示器（802）的显示驱动器（800），所述显示器包括多个与显示元件驱动电路（820）相关联的电致发光显示元件，每个所述显示元件驱动电路包括驱动晶体管，所述驱动晶体管具有用于根据控制连接上的电压驱动相关的显示元件，显示驱动器包括至少一个显示元件亮度控制器（846），以提供输出来驱动所述控制连接以控制来自所述显示元件的电致发光输出; 电压传感器（854,885），用于感测所述控制连接上的电压; 以及功率控制器（860），用于控制可调节电源，以向所述电致发光显示器提供可调电压，为所述驱动晶体管供电以驱动所述显示元件，所述功率控制器被配置为提供控制信号以调整所述电源电压响应于所述感测的电压。

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