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公开(公告)号：EP1367428A4
公开(公告)日：2008-08-06
申请号：EP01936928
申请日：2001-06-08
发明人： SATO ICHIRO , KUMAGAWA KATSUHIKO , INOUE KAZUO , FUNAMOTO TARO , MACHIDORI WATARU , ARIMOTO KATSUYUKI
IPC分类号： G02F1/1343 , G02F1/1368 , G09G3/36 , G02F1/133
CPC分类号： G02F1/134363 , G02F1/1368 , G02F2202/42 , G09G3/3611 , G09G2300/0434 , G09G2320/02 , G09G2320/0257 , G09G2320/0261 , G09G2340/16
摘要： In order to solve the problem that a stripe pattern trails when a dynamic image is displayed on a liquid crystal panel, thereby deteriorating the quality of image, an echo suppressing circuit (100) divides a video signal into pairs of consecutive frames and compares the levels of the two frames for each pair, thus suppressing the echo phenomenon occurring when a video signal including a dynamic image is displayed on a liquid crystal panel (108). When the signal levels are different, the signal is corrected to equalize the signal levels. A controller (102) drives the liquid crystal panel with an AC voltage through a source driver (104) and a gate driver (106) based on the video signal corrected through the echo suppressing circuit (100). The AC drive voltage for driving the liquid crystal panel is regulated so that the positive and negative voltages are balanced, thus preventing a stripe pattern from trailing during the displaying of a dynamic image.
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2.发明公开LIQUID CRYSTAL DISPLAY COMPRISING OCB CELL AND METHOD FOR DRIVING THE SAME 审中-公开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
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。
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3.发明公开MATRIX TYPE DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME 有权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
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。
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公开(公告)号：EP1382993A4
公开(公告)日：2008-03-19
申请号：EP02777874
申请日：2002-10-18
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.
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公开(公告)号：EP1492077A4
公开(公告)日：2008-06-18
申请号：EP03712974
申请日：2003-03-26
发明人： OHTA YOSHIHITO , KOBAYASHI TAKAHIRO , ARIMOTO KATSUYUKI , KOBAYASHI YOSHINORI , KAWAGUCHI SEIJI
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。
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公开(公告)号：EP1111578A4
公开(公告)日：2008-04-09
申请号：EP00922988
申请日：2000-05-09
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.
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公开(公告)号：EP1441326A4
公开(公告)日：2007-09-05
申请号：EP02802023
申请日：2002-10-17
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.
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公开(公告)号：EP1489590A4
公开(公告)日：2008-07-23
申请号：EP03712889
申请日：2003-03-25
CPC分类号： G09G3/3648 , G09G3/2018 , G09G3/3406 , G09G2310/061 , G09G2320/0247 , G09G2320/0606 , G09G2320/0626 , G09G2320/064
摘要： A double-speed changing section (10) doubles the frequency of a video signal. A drive control circuit (34) creates PWM dimming frequency information according to a synchronizing signal outputted from the double-speed changing section (10) so that the relation between the PWM dimming frequency f and the black display ratio B may be f>=25B+250 and B>10 and sends the information to a PWM dimming signal generator circuit (17). A drive control circuit (34) drives a gate driver (12) and a source driver (13) for an image display period and a black display period defined by dividing one frame period. The PWM dimming signal generator circuit (17) generates a PWM dimming signal according to a synchronizing signal and the PWM dimming frequency information and sends it to an operating circuit (16). The operating circuit (16) operates and dims a back light unit (15) according to the PWM dimming signal. Thus the colored interference fringes of a liquid crystal display formed when the black insertion driving and the PWM dimming are combined can be reduced.
摘要翻译： 倍速改变部分（10）使视频信号的频率加倍。 驱动控制电路（34）根据从倍速改变部分（10）输出的同步信号创建PWM调光频率信息，使得PWM调光频率f与黑显示比率B之间的关系可以是f> = 25B +250和B> 10并将该信息发送到PWM调光信号发生器电路（17）。 驱动控制电路（34）在通过划分一个帧周期而定义的图像显示周期和黑色显示周期中驱动栅极驱动器（12）和源极驱动器（13）。 PWM调光信号发生器电路（17）根据同步信号和PWM调光频率信息产生PWM调光信号并将其发送到工作电路（16）。 操作电路（16）根据PWM调光信号操作并调暗背光单元（15）。 因此，可以减少在黑插入驱动和PWM调光结合时形成的液晶显示器的彩色干涉条纹。
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公开(公告)号：EP1376528A4
公开(公告)日：2008-03-05
申请号：EP02705372
申请日：2002-03-20
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.
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公开(公告)号：EP1286202A4
公开(公告)日：2007-06-06
申请号：EP02710455
申请日：2002-02-01
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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