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1. 发明专利

JP2006301220A Display apparatus and driving method thereof 审中-公开
标题翻译：显示装置及其驱动方法
公开(公告)号：JP2006301220A
公开(公告)日：2006-11-02
申请号：JP2005121836
申请日：2005-04-20
申请人： Hitachi Displays Ltd , 株式会社日立ディスプレイズ
发明人： AWAKURA HIROMOTO , KASAI SHIGEHIKO , SATO TOSHIHIRO , AKIMOTO HAJIME
IPC分类号： G09G3/30 , G09G3/20 , H01L51/50
CPC分类号： G09G3/3258 , G09G3/2014 , G09G2300/0842 , G09G2300/0861 , G09G2320/0295 , G09G2320/043 , G09G2320/048 , G09G2330/021 , G09G2330/025
摘要： PROBLEM TO BE SOLVED: To suppress the reduction of luminance which may be caused by the deterioration of an L-I characteristic. SOLUTION: A pulse width modulation type display apparatus is provided with a current measuring circuit 19 for measuring the peak current value of pixels, a reference current value calculation circuit 195 for calculating a reference current value in accordance with at least one of the accumulated operating time of the pixels and the deteriorated state of the pixels and an anode power supply circuit 15 for controlling the peak current value of the pixels by using the reference current value as a target. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：抑制可能由L-1特性的劣化引起的亮度的降低。解决方案：脉冲宽度调制型显示装置设置有用于测量像素的峰值电流值的电流测量电路19，用于根据以下中的至少一个来计算参考电流值的参考电流值计算电路195 像素的累积运行时间和像素的恶化状态，以及通过使用基准电流值作为目标来控制像素的峰值电流值的阳极电源电路15。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2009294676A Display device 审中-公开
标题翻译：显示设备
公开(公告)号：JP2009294676A
公开(公告)日：2009-12-17
申请号：JP2009215257
申请日：2009-09-17
申请人： Hitachi Displays Ltd , Hitachi Ltd , 株式会社日立ディスプレイズ , 株式会社日立製作所
发明人： KASAI SHIGEHIKO , AWAKURA HIROMOTO , SATO TOSHIHIRO , AKIMOTO HAJIME
IPC分类号： G09G3/30 , G09G3/20 , H01L51/50
摘要： PROBLEM TO BE SOLVED: To improve an aperture ratio of a display device by reducing switches and wiring in a pixel in the display device, the display device including a drive driver for supplying optional voltage for gradation control and compensating luminance variation. SOLUTION: The display device includes a self-luminous element display 22 in which a plurality of self-luminous elements are arranged in a matrix form, a drive voltage generating means 18 for generating drive voltage for driving the self-luminous element, a flyback period control built-in data line driving means 14 for controlling drive voltage by a signal voltage corresponding to display data and for generating pixel control voltage being independent of the display data, a scan line-driving means 16 for selecting the self-luminous element to be driven, and a pixel control means 20 for controlling signal voltage write-in for a pixel. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了通过减少显示装置中的像素中的开关和布线来改善显示装置的开口率，显示装置包括用于提供用于灰度控制和补偿亮度变化的可选电压的驱动驱动器。解决方案：显示装置包括：自发光元件显示器22，其中多个自发光元件以矩阵形式布置;驱动电压产生装置18，用于产生用于驱动自发光元件的驱动电压; 反激时段控制内置数据线驱动装置14，用于通过与显示数据相对应的信号电压来控制驱动电压，并产生独立于显示数据的像素控制电压;扫描线驱动装置16，用于选择自发光要被驱动的元件，以及用于控制像素的信号电压写入的像素控制装置20。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2004252216A Spontaneous light emission type display device and its driving method 审中-公开
公开(公告)号：JP2004252216A
公开(公告)日：2004-09-09
申请号：JP2003043251
申请日：2003-02-20
申请人： Hitachi Displays Ltd , Hitachi Ltd , 株式会社日立ディスプレイズ , 株式会社日立製作所
发明人： AWAKURA HIROMOTO , KASAI SHIGEHIKO , FURUHASHI TSUTOMU , SATO TOSHIHIRO
IPC分类号： H04N5/66 , G09G3/20 , G09G3/30
摘要： PROBLEM TO BE SOLVED: To improve display quality by adjusting luminance according to the mean luminance of a display image of a spontaneous light emission display device and to deter display luminance from varying owing to temperature variation of a spontaneous light emitting element and temporal deterioration of pixels resulting from long-time use. SOLUTION: The spontaneous light emission type display device has a display part 14 of active matrix constitution of spontaneous light emitting elements driven on a pulse-width modulation (PWM) basis, a display control part 6, a data signal driving circuit 11, a scanning signal driving circuit 12, a cathode power supply part 17, and an anode power supply part 15, and is equipped with a current measurement part 19, an averaging circuit 191, and a peak detection part 193 which measure the total quantity of currents flowing to spontaneous light emitting elements of the display device 14 to contribute to light emission. A driving method of the spontaneous light emission type display device includes the processes of: grasping states of I-V characteristics of spontaneous light emitting elements having changed in quality owing to temperature variation and temporal deterioration of the spontaneous light emitting elements from the peak of a current quantity increasing or decreasing in one frame period cycle; deciding the mean luminance of a display image from the ratio of a mean current quantity to a peak current quantity; and controlling a voltage applied to the spontaneous light emitting elements according to those pieces of information to adjust the luminance. COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2004157250A Display device 审中-公开
标题翻译：显示设备
公开(公告)号：JP2004157250A
公开(公告)日：2004-06-03
申请号：JP2002321346
申请日：2002-11-05
申请人： Hitachi Displays Ltd , Hitachi Ltd , 株式会社日立ディスプレイズ , 株式会社日立製作所
发明人： KASAI SHIGEHIKO , AWAKURA HIROMOTO , SATO TOSHIHIRO , AKIMOTO HAJIME
IPC分类号： H01L51/50 , G09G3/20 , G09G3/30 , G09G3/32 , G09G5/00 , H05B33/14
CPC分类号： G09G3/20 , G09G3/2014 , G09G3/3208 , G09G2300/0465 , G09G2310/0259 , G09G2310/0275
摘要： PROBLEM TO BE SOLVED: To reduce the number of switches and wiring in pixels and to enhance the numerical aperture in a display device provided with a driver supplying an arbitrary voltage for gradation control and brightness irregularity compensation. SOLUTION: The display device is provided with a self light emitting display 22 in which a plurality of self light emitting elements are arranged matrically, a driving voltage generating means 18 which generates a driving voltage for driving the self light emitting elements, a blanking period control built-in data line driving means 14 for controlling the driving voltage by means of a signal voltage in accordance with a display data and generating a pixel control voltage irrespective of the display data, a scanning line driving means 16 for selecting the self light emitting element to be driven and a pixel control means 20 for controlling the signal voltage writing to the pixel. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了减少开关的数量和以像素为单位的布线，并且提供具有提供用于灰度控制和亮度不均匀性补偿的任意电压的驱动器的显示装置的数值孔径。解决方案：显示装置设置有自发光显示器22，其中多个自发光元件被配置成基准;驱动电压产生装置18，其产生用于驱动自发光元件的驱动电压; 消隐周期控制内置数据线驱动装置14，用于根据显示数据通过信号电压控制驱动电压，并与显示数据无关地生成像素控制电压;扫描线驱动装置16，用于选择自身要被驱动的发光元件和用于控制写入像素的信号电压的像素控制装置20。版权所有（C）2004，JPO

5. 发明专利

JP2007086147A Display device with function of adjusting common electrode applied voltage, and its adjusting method 有权
标题翻译：具有调整常用电极应用电压功能的显示装置及其调整方法
公开(公告)号：JP2007086147A
公开(公告)日：2007-04-05
申请号：JP2005271798
申请日：2005-09-20
申请人： Hitachi Displays Ltd , 株式会社日立ディスプレイズ
发明人： AWAKURA HIROMOTO , KUDO YASUYUKI , MANBA NORIO
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/3655 , G02F1/13318 , G09G3/3614 , G09G2320/0223 , G09G2320/0247 , G09G2320/029 , G09G2360/145
摘要： PROBLEM TO BE SOLVED: To suppress a flicker appearing on the entire surface by providing a liquid crystal panel with a plurality of dummy pixels.
SOLUTION: The plurality of dummy pixels 21 are formed outside a display area 14 on a TFT array substrate 1, and a photodiode 31 is provided in each dummy pixel 21. Cathode sides of all photodiodes are connected to one storage capacitor Cp. When the storage capacitor Cp is precharged and then all the photodiodes are exposed, precharged electric charges leak through the respective photodiodes. The voltage across the storage capacitor Cp is measured a specified time later, and then the total amount of currents flowing through all the photodiodes is known. The total amount of the currents, i.e. the voltage drop across the storage capacitor Cp is proportional to a mean photodetection quantity of all the photodiodes and detected to know mean luminance of the entire surface of the display area 14. Mean luminances when a positive voltage is applied to a liquid crystal element 32 of a dummy pixel 21 and a negative voltage is applied are compared with each other to detect flicker intensity.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过为液晶面板提供多个虚拟像素来抑制整个表面上出现的闪烁。解决方案：将多个虚拟像素21形成在TFT阵列基板1上的显示区域14的外部，并且在每个虚拟像素21中设置光电二极管31.所有光电二极管的阴极侧连接到一个存储电容器Cp。当存储电容器Cp被预充电然后所有的光电二极管被暴露时，预充电的电荷通过相应的光电二极管泄漏。存储电容器Cp两端的电压在规定的时间后测量，然后流过所有光电二极管的总电流是已知的。电流的总量，即存储电容器Cp两端的电压降与所有光电二极管的平均光电检测量成比例，并且被检测为知道显示区域14的整个表面的平均亮度。当正电压为对虚拟像素21的液晶元件32施加的负电压进行比较，以检测闪烁强度。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2005275003A Display device 有权
标题翻译：显示设备
公开(公告)号：JP2005275003A
公开(公告)日：2005-10-06
申请号：JP2004088468
申请日：2004-03-25
申请人： Hitachi Displays Ltd , 株式会社日立ディスプレイズ
发明人： KASAI SHIGEHIKO , AWAKURA HIROMOTO , SATO TOSHIHIRO , AKIMOTO HAJIME
IPC分类号： H01L51/50 , G09G3/20 , G09G3/30 , G09G3/32 , G09G3/36 , H05B33/14
CPC分类号： G09G3/3258 , G09G3/2011 , G09G3/3266 , G09G3/3275 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/0251 , G09G2320/0257 , G09G2320/0261 , G09G2360/18
摘要： PROBLEM TO BE SOLVED: To eliminate moving image blurring and to enhance moving image performance in a spontaneous emission element display device which inputs a triangular wave signal after writing of a data signal from a data line and controls emission time by a comparison result between data signal voltage and the triangular wave signal. SOLUTION: In a spontaneous emission element display display control part 6 corresponding to a moving image, the triangular wave signal 9 corresponding to the moving image to be at a voltage fixed level during ano optional period is generated, in the spontaneous emission element display 21, emission and non-emission are controlled from a result by comparing size of signal voltage written according to input display data 4 by a data line driving means 15 and the triangular wave signal 9 corresponding to the moving image. The fixed level of the triangular wave signal corresponding to the moving image is considered as a level in which the spontaneous emission element display 21 becomes non-emission irrespective of the signal voltage. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了消除运动图像模糊并增强在从数据线写入数据信号之后输入三角波信号的自发发射元件显示装置中的运动图像性能，并通过比较结果控制发射时间数据信号电压与三角波信号之间。解决方案：在与运动图像相对应的自发发光元件显示控制部分6中，在自发发射元件中产生与在任意时间段期间处于电压固定电平的运动图像相对应的三角波信号9 通过将数据线驱动装置15根据输入显示数据4写入的信号电压的大小与对应于运动图像的三角波信号9进行比较，从显示器21，发光和不发光的控制。对应于运动图像的三角波信号的固定电平被认为是与信号电压无关的自发发射元件显示器21变为非发射的电平。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2004341263A Method and device for self-luminous element display 审中-公开
公开(公告)号：JP2004341263A
公开(公告)日：2004-12-02
申请号：JP2003138089
申请日：2003-05-16
申请人： Hitachi Displays Ltd , Hitachi Ltd , 株式会社日立ディスプレイズ , 株式会社日立製作所
发明人： KASAI SHIGEHIKO , AWAKURA HIROMOTO , SATO TOSHIHIRO , AKIMOTO HAJIME
IPC分类号： H01L51/50 , G09G3/20 , G09G3/30 , H05B33/14
摘要： PROBLEM TO BE SOLVED: To eliminate a blurred moving picture and to control an illumination period regardless of the timing of input display data in a pixel control system for self-luminous element display. SOLUTION: The self-luminous element display 20 having a plurality of self-luminous elements arranged in matrix, a driving voltage generating means 10 of generating a driving voltage for driving the self-luminous elements, a data line divisionally switching means 12 of switching and outputting the driving voltage and a triangular wave signal to data lines, a write scanning line driving means 14 of selecting self-luminous elements to be driven, and a pixel illumination control line driving means 18 of controlling the illumination timing of pixels are provided for each of groups of odd-numbered pixels and even-numbered pixels. COPYRIGHT: (C)2005,JPO&NCIPI

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