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1. 发明公开

EP1640964A4 MATRIX TYPE DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME 有权
标题翻译： MATRIZENANZEIGEVORRICHTUNG UND SEIN VERFAHREN ZUM ANSTREUERN
公开(公告)号：EP1640964A4
公开(公告)日：2008-06-04
申请号：EP04792420
申请日：2004-10-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ARIMOTO KATSUYUKI , KOBAYASHI TAKAHIRO , OHTA YOSHIHITO , MATSUMOTO KEIZO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20
CPC分类号： G09G3/36 , G09G3/20 , G09G2320/0276 , G09G2320/028
摘要： A pair of Ϝ1A and Ϝ2A converter circuits (1a,2a) to a pair of Ϝ1C and Ϝ2C converter circuits (1c,2c) use first to third types of first and second Ϝ characteristics to Ϝ convert an input video signal (IS). Selectors (3 to 5) select one pair among three pairs of Ϝ characteristics in accordance with a transmittance to be used for display, and select one of the six Ϝ corrected outputs such that both a distribution area ratio of pixels driven by the video signal as Ϝ corrected by use of the first Ϝ characteristic of the selected pair of Ϝ characteristics and a distribution area ratio of pixels driven by the video signal as Ϝ corrected by use of the second Ϝ characteristic of the selected pair of Ϝ characteristics are equal to a distribution area ratio specified in advance for the selected pair of Ϝ characteristics.
摘要翻译：到一对“1C”和“2C”转换器电路（1c，2c）的一对“1A”和“2A”转换器电路（1a，2a）使用第一至第三类型的第一和第二“1”特性来转换输入视频信号（IS）。选择器（3至5）根据要用于显示的透射率从三对“◎”特性中选择一对，并且选择六个“经校正的输出”中的一个，使得由视频信号驱动的像素的分布面积比通过使用所选对的第一特性的第一特性进行校正，并且由视频信号驱动的像素的分布面积比被校正为通过使用所选择的第三对特性的第二特性校正的分布等于预先为选定的一对特征指定面积比。

2. 发明公开

EP1382993A4 LIQUID CRYSTAL DISPLAY APPARATUS AND DRIVE METHOD THEREOF 有权
标题翻译：液晶显示装置及保证行车
公开(公告)号：EP1382993A4
公开(公告)日：2008-03-19
申请号：EP02777874
申请日：2002-10-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ARIMOTO KATSUYUKI , OHTA YOSHIHITO , KOBAYASHI TAKAHIRO , MURAO TSUGIO , FUNAMOTO TARO
IPC分类号： G02F1/139 , G09G3/36 , G02F1/133 , G09G3/20
CPC分类号： G09G3/3648 , G02F1/1395 , G09G3/3677 , G09G2300/0486 , G09G2300/0491 , G09G2320/041
摘要： A liquid crystal display apparatus includes a sensing unit (108) for sensing a value of parameter as a fluctuation factor of inverse transition generation condition, a calculation unit (106) for deciding at least one of a high voltage application time ratio for one frame period, the high voltage being applied to liquid crystal panel so as to prevent inverse transition, the high voltage value, and application voltage corresponding to white display, and a controller (104) for alternately outputting a video signal and a non-video signal for applying the high voltage and driving the liquid crystal panel under a condition according to the decision result of the calculation unit. Thus, it is possible to always display optimal video not depending on fluctuation of the inverse transition generation condition.

3. 发明公开

EP1050954A4 CIRCUIT FOR DRIVING PIEZOELECTRIC TRANSFORMER 有权
标题翻译： SCHALTUNG ZUR STEUERUNG VON PIEZOELEKTRISCHEN TRANSFORMATOREN
公开(公告)号：EP1050954A4
公开(公告)日：2001-08-16
申请号：EP99947979
申请日：1999-10-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKANISHI HIDEYUKI , KOBAYASHI TAKAHIRO
IPC分类号： H05B41/282 , H05B41/392 , H02M7/48
CPC分类号： H05B41/2824 , H05B41/2822 , H05B41/3925
摘要： A circuit for driving a piezoelectric transformer adapted for generating a drive pulse of high frequency-resolution from a low-frequency clock and capable of being digitally processed by carrying out voltage detection by means of a low-cost structure, comprising an error voltage calculating circuit (7) for multiplying the difference between the output data of an A/D converter and the reference data given externally by a constant and outputting the product as error data, a frequency setting circuit (8) for setting the frequency of the drive pulse for driving the piezoelectric transformer as M-bit data based on the error data, and a frequency-division ratio dispersion frequency-dividing circuit (9) for dividing the frequency of a clock of predetermined frequency and generating the drive pulse, wherein the frequency-division ratio of the frequency-division ratio dispersion frequency-dividing circuit is dispersed by the time equal to N periods (N is an integer) of the drive pulse, and the average frequency-division ratio over the N periods is substantially equal to the quotient of the M-bit data divided by N.
摘要翻译：一种压电变压器驱动电路，其中通过改变驱动脉冲信号的频率来改变其输出电压，以控制流过冷阴极管的电流，包括：电流检测电路; 整流电路; A / D转换器; 误差电压计算电路，输出误差数据; 用于检测所述压电变压器的谐振点的峰值检测电路; 极性反转电路，用于根据所述峰值检测电路的输出数据反转所述误差数据的极性; 频率设定电路，用于通过将所述极性反转电路的输出数据与先前的频率设定值相加来设定所述压电变压器的所述驱动脉冲信号的频率。

4. 发明公开

EP1492077A4 LIQUID CRYSTAL DISPLAY DEVICE 审中-公开
标题翻译： FLÜSSIGKRISTALLANZEIGEEINRICHTUNG
公开(公告)号：EP1492077A4
公开(公告)日：2008-06-18
申请号：EP03712974
申请日：2003-03-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OHTA YOSHIHITO , KOBAYASHI TAKAHIRO , ARIMOTO KATSUYUKI , KOBAYASHI YOSHINORI , KAWAGUCHI SEIJI
IPC分类号： G02F1/139 , G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/3688 , G09G3/3607 , G09G3/3614 , G09G2300/0426 , G09G2300/0491 , G09G2310/0297 , G09G2310/08 , G09G2320/0209 , G09G2320/0233
摘要： A liquid crystal display device includes a signal converter (101), a drive pulse generator (102), a source driver (103), a gate driver (1704), and a multiplexer unit (1706). Between the source driver (103) and a display area unit (1705), the liquid crystal display device further includes an intersection portion (204) where wires corresponding to two source lines (S2, S3) as the second and the third lines from the end of each set are intersected when the source lines (S1, S2, S3, S4, ...) in the display area unit are divided into four-line sets. Thus, in the liquid crystal display device using the multiplexer unit for switching a plurality of source lines by time division, it is possible to suppress deterioration of pixel display quality due to insufficient capacity of write to pixels.
摘要翻译：液晶显示装置包括信号转换器（101），驱动脉冲发生器（102），源极驱动器（103），栅极驱动器（1704）和多路复用器单元（1706）。在源极驱动器（103）和显示区域单元（1705）之间，液晶显示装置进一步包括交叉部分（204），在该交叉部分（204）中，与作为第二线和第三线的两条源极线当显示区域单元中的源极线（S1，S2，S3，S4，...）被划分成四行时，每组的结尾相交。因此，在使用用于通过时分切换多个源极线的多路复用器单元的液晶显示装置中，可以抑制由于写入像素的容量不足而导致的像素显示质量的劣化。

5. 发明公开

EP1111578A4 IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD 有权
标题翻译：图像显示装置和图像显示方法
公开(公告)号：EP1111578A4
公开(公告)日：2008-04-09
申请号：EP00922988
申请日：2000-05-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUNAMOTO TARO , MACHIDORI WATARU , KOBAYASHI TAKAHIRO , OTA YOSHIHITO , ARIMOTO KATSUYUKI
IPC分类号： G06F3/14 , G09G3/34 , G09G3/36 , H04N9/77
CPC分类号： G09G3/3611 , G06F3/14 , G09G3/3406 , G09G3/3426 , G09G2320/0238 , G09G2320/0247 , G09G2320/0271 , G09G2320/0276 , G09G2320/0626 , G09G2320/0646 , G09G2320/0653 , G09G2320/066 , G09G2320/103 , G09G2330/021 , G09G2340/10 , G09G2360/145 , G09G2360/16
摘要： An image display device and method therefor, which improve a visual contrast feeling by regulating a contrast and light source with a correlation maintained therebetween. A feature detection unit (11) detects MAX, MIN and APL of an input image signal. A control data generating unit (12) determines Gain for amplifying the difference between the MAX and the MIN up to a dynamic range width, and Offset for affording a DC level shift amount at which the input image signal to be amplified by the Gain falls within the output dynamic range of a DC level regulating unit (13B). A signal amplitude regulating unit (13A) amplifies the input image signal based on the APL and according to the Gain. The DC level regulating unit (13B) level-shifts the amplified input image signal according to the Offset value. The light source control unit (16) controls a light source (18) based on the Offset so that a visual brightness level on the screen is identical with a brightness level of the input image signal.

6. 发明公开

EP1441326A4 LIQUID CRYSTAL DISPLAY AND ITS DRIVING METHOD 有权
标题翻译：液晶显示器及其控制方法
公开(公告)号：EP1441326A4
公开(公告)日：2007-09-05
申请号：EP02802023
申请日：2002-10-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ARIMOTO KATSUYUKI , OHTA YOSHIHITO , KOBAYASHI TAKAHIRO , MURAO TSUGIO
IPC分类号： G09G3/20 , G09G3/36 , G09G5/00 , G02F1/133
CPC分类号： G09G5/008 , G09G3/3648 , G09G5/005 , G09G5/006 , G09G2300/0486 , G09G2300/0491 , G09G2310/0205 , G09G2310/061 , G09G2320/0247 , G09G2320/0261 , G09G2340/0421
摘要： A frequency converting block (101) provided to a liquid crystal display inserts a non-image signal simultaneously written in the pixels along L gate lines of a liquid crystal panel between the image signals constituting the input video signal at a rate of one line for the image signal of L lines (L is an integer of 2 or more) so as to generate an output video signal and adjusts the number of horizontal scanning periods contained in the vertical blanking period of the output video signal so that the number of horizontal scanning periods constituting one frame period may be (L+1)×(2N+1) (N is an integer). When reverse transition prevention drive is carried out by using a liquid crystal panel of the OCB mode, the drive frequency is prevented from increasing, the luminance variation resulting from the AC drive of the liquid crystal panel is prevented, and the cost is reduced.

7. 发明公开

EP1401091A4 COLD-CATHODE DRIVER AND LIQUID CRYSTAL DISPLAY 审中-公开
标题翻译：冷阴极DRIVERS和液晶显示
公开(公告)号：EP1401091A4
公开(公告)日：2005-09-28
申请号：EP02743726
申请日：2002-06-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKANISHI HIDEYUKI , KOBAYASHI TAKAHIRO
IPC分类号： H05B41/282 , H05B41/392 , H02M7/48 , H02M7/538
CPC分类号： H05B41/3925 , H05B41/2822 , H05B41/2824 , H05B41/3927 , Y02B20/186
摘要： A cold−cathode driver using a step−up transformer for driving a cold−cathode tube, which is a piezoelectric transformer the output voltage of which varies with the frequency of the input voltage. The cold−cathode driver comprises frequency−dividing means for generating driving pulse of an average frequency corresponding to frequency data outputted from frequency setting means for a dispersion period corresponding to a period of N drive pulses, a controller for controlling the control period so that the same drive can be performed at the average frequency a predetermined times A (A ≥ 2), burst pulse generating means for generating pulses with duty width corresponding to a given dimming level at the frequency outputted from the controller. The drive method is a digital one by frequency dispersion of the drive pulses, thus achieving reduction of space and cost of the driving circuit. A frequency resolution required for favorable dimming performance and lighting performance is imparted. The dimming method is a burst one, so that luminance flickering as observed in the case of a tube current control method is suppressed.

8. 发明公开

EP1302807A4 LIQUID CRYSTAL DISPLAY COMPRISING OCB CELL AND METHOD FOR DRIVING THE SAME 审中-公开
标题翻译： FLÜSSIGKRISTALLANZEIGEMIT OCB-ZELLE UND DEREN ANSTEUERUNGSVERFAHREN
公开(公告)号：EP1302807A4
公开(公告)日：2005-10-05
申请号：EP01947935
申请日：2001-07-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OHTA YOSHIHITO , ARIMOTO KATSUYUKI , KOBAYASHI TAKAHIRO , FUNAMOTO TARO
IPC分类号： G02F1/133 , G02F1/139 , G09G3/20 , G09G3/34 , G09G3/36
CPC分类号： G09G3/3406 , G02F1/1395 , G09G3/3648 , G09G3/3655 , G09G3/3688 , G09G3/3696 , G09G2300/0491 , G09G2310/0251 , G09G2320/0261 , G09G2320/0626 , G09G2320/0633 , G09G2320/103 , G09G2360/16
摘要： A liquid crystal display and a method for driving the same, by which reverse transition in an OCB cell can be suppressed and a good image can be displayed. One frame period comprises a first period P1 for which a signal initializing the state of the liquid crystal is written in a pixel cell, and a second period P2 for which image data corresponding to a video signal is written in the pixel cell, and the first period includes a Vsup hold period during which each pixel cell holds a potential Vsup having a higher level applied to each pixel cell higher than that of second period.
摘要翻译：提供一种能够抑制OCB单元中的背面转变的发生和显示出优异的图像的液晶显示装置及其驱动方法。一帧周期具有用于写入用于初始化像素单元中的液晶的状态的信号的第一周期P 1和与像素单元中的图像信号对应地写入像素数据的第二周期，以及应用于每个像素单元被设置在第一周期中，使得每个像素单元保持比第二周期高的电压Vsup。

9. 发明公开

EP1376528A4 IMAGE DISPLAY AND DISPLAYING METHOD 有权
标题翻译： VIEW显示方法
公开(公告)号：EP1376528A4
公开(公告)日：2008-03-05
申请号：EP02705372
申请日：2002-03-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUNAMOTO TARO , MACHIDORI WATARU , ARIMOTO KATSUYUKI , OHTA YOSHIHITO , KOBAYASHI TAKAHIRO , KUMAMOTO YASUHIRO , KARIYA TETSUO
IPC分类号： G02F1/13357 , G02F1/133 , G09G3/20 , G09G3/34 , G09G3/36
CPC分类号： G09G3/36 , G09G3/3406 , G09G2310/08 , G09G2320/0247 , G09G2320/0261 , G09G2320/062 , G09G2320/0626 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2320/066 , G09G2320/103 , G09G2320/106
摘要： A liquid crystal display being displayed by a backlight (104) and comprising a circuit (101) for outputting a video signal while compressing in the time direction, an LCD controller (106) for driving a liquid crystal panel (105) based on a video signal compressed in the time direction, a source driver (107) and a gate driver (108), a circuit (2) for detecting the amount of movement of a display image based on the video signal, a circuit (4) generating PWM light control pulses of different frequencies depending on the detection results from the movement detecting circuit (2), and an inverter (103) for lighting the backlight (104) based on the light control pulse, wherein blur at the outline of a moving image is reduced and flicker of a still image can be reduced.

10. 发明公开

EP1286202A4 LIQUID CRYSTAL DISPLAY UNIT AND DRIVING METHOD THEREFOR 审中-公开
标题翻译：液晶显示单元和确保行驶
公开(公告)号：EP1286202A4
公开(公告)日：2007-06-06
申请号：EP02710455
申请日：2002-02-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ARIMOTO KATSUYUKI , OHTA YOSHIHITO , KOBAYASHI TAKAHIRO , FUNAMOTO TARO , KOBAYASHI YOSHINORI , NAKAO KENJI , KAWAGUCHI SEIJI
IPC分类号： G02F1/139 , G02F1/133 , G02F1/1368 , G09G3/20 , G09G3/36
CPC分类号： G09G3/3648 , G09G3/3614 , G09G3/3655 , G09G2300/0491 , G09G2310/0251 , G09G2310/06 , G09G2320/0209
摘要： A signal conversion unit (401) increases the transfer rate of input image signals to be supplied to a liquid crystal panel (405) and inserts into gaps between input image signals non-image signals for applying a specified voltage to liquid crystal cells for supplying to a source driver (403) as pixel signals. Input image signals and non-image signals are sequentially written into each pixel cell with a positive or negative polarity; and, after input image signals are written, non-image signals having the same polarity as that of the input image signals are written into all the pixels without fail, and after non-image signals are written, input image signals having polarity opposite to that of the non-image signals are written. Therefore, when an image is displayed on a liquid crystal panel in an OCB mode, a counter transfer can be prevented and a uniform image display is ensured.

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