公开(公告)号：US20090002298A1

公开(公告)日：2009-01-01

申请号：US11814108

申请日：2006-01-19

申请人： Tomoo Furukawa

发明人： Tomoo Furukawa

IPC分类号： G09G3/36

CPC分类号： G09G5/02 ,  G09G2300/0452 ,  G09G2310/0235 ,  G09G2320/0242 ,  G09G2320/0285

摘要： A display apparatus includes a luminance compressing section, a luminance extending section, and a W calculating section. The luminance compressing section subjects three color signals to luminance compression according to a luminance in a preceding frame, and outputs compressed color signals. The luminance extending section outputs luminance extended and converted color signals of respective three colors. Each of the luminance extended and converted color signals is obtained by subtracting a corrected minimum luminance value from a luminance extended color signal which is obtained by subjecting the compressed color signal to luminance extension at a luminance extending rate S in accordance with a function F(t). The function F(t) has as a variable a ratio t of a minimum luminance value to a maximum luminance value of the compressed color signals. The corrected minimum luminance value is obtained by multiplying the minimum luminance value by a coefficient k. The W calculating section outputs the minimum luminance value as a white signal. The function F(t) has a constant according to light emitting efficiencies of four color picture elements. The coefficient k is set so that a luminance of the W (white) color signal becomes equal to or less than a minimum luminance of the luminance extended and converted color signals of the three colors.

摘要翻译： 显示装置包括亮度压缩部分，亮度延伸部分和W计算部分。 亮度压缩部根据前一帧的亮度对三色信号进行亮度压缩，并输出压缩的彩色信号。 亮度延长部分输出各种三种颜色的亮度扩展和转换的颜色信号。 通过从根据函数F（t）的亮度扩展率S对压缩色彩信号进行亮度扩展而得到的亮度扩展颜色信号中减去校正的最小亮度值，获得每个亮度扩展和转换的颜色信号 ）。 函数F（t）具有作为最小亮度值与压缩颜色信号的最大亮度值的比率t的变量。 校正的最小亮度值通过将最小亮度值乘以系数k而获得。 W计算部分输出最小亮度值作为白色信号。 函数F（t）根据四个彩色像素的发光效率具有常数。 设定系数k使得W（白色）彩色信号的亮度变得等于或小于三种颜色的亮度延迟和转换的彩色信号的最小亮度。

公开(公告)号：US20050219180A1

公开(公告)日：2005-10-06

申请号：US11084205

申请日：2005-03-21

申请人： Masumi Kubo ,  Tomoo Furukawa

发明人： Masumi Kubo ,  Tomoo Furukawa

IPC分类号： G02F1/1337 ,  G02F1/133 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3648 ,  G09G2320/02 ,  G09G2320/0252 ,  G09G2320/0261 ,  G09G2320/041 ,  G09G2340/16

摘要： A liquid crystal display device according to the present invention includes a liquid crystal panel having a vertical alignment type liquid crystal layer, and a drive circuit for supplying a driving voltage to the liquid crystal panel, and performs display in a normally black mode. At least at panel temperature 40° C., a rise transmittance Tr is equal to or greater than 75% of the transmittance in the highest gray scale level displaying state, and a decay transmittance Td is equal to or less than 8% of the transmittance in the highest gray scale level displaying state. At a panel temperature T1 below 40° C., the decay transmittance Td is greater than 4% and equal to or less than 8% of the transmittance in the highest gray scale level displaying state, and when displaying an intermediate gray scale level which is higher than a gray scale level displayed in a previous vertical scanning period, the drive circuit supplies an overshoot voltage OSVT1 which is lower than a just overshoot voltage JOSVT1 for the panel temperature T1.

摘要翻译： 根据本发明的液晶显示装置包括具有垂直取向型液晶层的液晶面板和用于向液晶面板提供驱动电压的驱动电路，并以常黑模式进行显示。 至少在面板温度40℃时，上升透射率Tr等于或大于最高灰度级显示状态下的透射率的75％，并且衰变透射率Td等于或小于透射率的8％ 在最高的灰度级显示状态。 在40℃以下的面板温度T 1 <1时，衰变透过率Td大于4％且等于或小于最高灰度级显示状态下透光率的8％，当 显示高于在先前垂直扫描周期中显示的灰度级别的中间灰度级，驱动电路提供低于恰好过冲电压JOSV _{的过冲电压OSV < T1 面板温度T 1 <1。}

公开(公告)号：US07936347B2

公开(公告)日：2011-05-03

申请号：US12659390

申请日：2010-03-08

申请人： Tomoo Furukawa ,  Makoto Shiomi ,  Tai Shiraishi ,  Mitsuhiro Shigeta

发明人： Tomoo Furukawa ,  Makoto Shiomi ,  Tai Shiraishi ,  Mitsuhiro Shigeta

IPC分类号： G09G5/00

CPC分类号： G09G3/2055 ,  G09G3/3611 ,  G09G2320/0252 ,  G09G2320/0261 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/16

摘要： A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data. With this driving system which adopts a combination of (a) a overshoot-driving method for enforcing liquid crystal to respond at a high speed, and (b) a bit-depth extension technology in which a number of grayscales is increased by adding noise, it is possible to provide, at a low cost, a high-definition displaying device such as a liquid crystal display, having a high-response-characteristics and a high quality of grayscale reproduction.

摘要翻译： 用于显示装置的本发明的驱动系统具有伪位深度延伸部分。 在伪比特深度扩展部分中，将噪声模式添加到m位中的输入信号D0的高n位数据，其中（i）m是9或更大的整数，并且（ii）n是 8或更大，但小于m的整数。 然后，从D0获得的数据D1的上n位作为输出数据D2从伪位深度扩展部分输出。 驱动系统还设置有用于对每个像素进行过冲驱动的过冲驱动部。 在8位数据中噪声模式的噪声量为1或更小，并且利用n位数据执行过冲驱动部分中的计算。 该驱动系统采用（a）用于强制液晶高速响应的过冲驱动方法的组合，以及（b）通过增加噪声增加多个灰度级的位深度扩展技术， 可以以低成本提供具有高响应特性和高质量的灰度再现的诸如液晶显示器的高清晰度显示装置。

公开(公告)号：US20100164923A1

公开(公告)日：2010-07-01

申请号：US12659390

申请日：2010-03-08

申请人： Tomoo Furukawa ,  Makoto Shiomi ,  Tai Shiraishi ,  Mitsuhiro Shigeta

发明人： Tomoo Furukawa ,  Makoto Shiomi ,  Tai Shiraishi ,  Mitsuhiro Shigeta

IPC分类号： G09G5/00

CPC分类号： G09G3/2055 ,  G09G3/3611 ,  G09G2320/0252 ,  G09G2320/0261 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/16

摘要： A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data. With this driving system which adopts a combination of (a) a overshoot-driving method for enforcing liquid crystal to respond at a high speed, and (b) a bit-depth extension technology in which a number of grayscales is increased by adding noise, it is possible to provide, at a low cost, a high-definition displaying device such as a liquid crystal display, having a high-response-characteristics and a high quality of grayscale reproduction.

公开(公告)号：US07583278B2

公开(公告)日：2009-09-01

申请号：US10743770

申请日：2003-12-24

申请人： Makoto Shiomi ,  Kazunari Tomizawa ,  Koichi Miyachi ,  Tomoo Furukawa

发明人： Makoto Shiomi ,  Kazunari Tomizawa ,  Koichi Miyachi ,  Tomoo Furukawa

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： G09G3/3648 ,  G09G2320/0252 ,  G09G2340/16

摘要： Data, such as video signal data, for example, for a next desired frame is first modulated or varied to facilitate a transition from a current frame to a next desired frame. A modulation processing section can be used, for example, to thus produce a corrected video signal to facilitate the current-to-next desired grayscale level transition. Thereafter, spatial filtering is then carried on the corrected video signal, using a spatial filtering section for example. As such, high frequency components in a spatial domain may be reduced, even after the spatial frequencies of an ordinary video signal and potentially those of noise have been scaled up. Therefore, undesirable noise-caused display quality degradation can be reduced or even prevented, while pixel response speed as a result of the facilitation of grayscale level transition, is increased.

摘要翻译： 首先调制或改变数据，例如视频信号数据，用于下一个所需帧，以便于从当前帧到下一个所需帧的转换。 例如，可以使用调制处理部分来产生经校正的视频信号，以便于当前到下一个期望的灰度级转换。 此后，使用例如空间滤波部分对校正后的视频信号进行空间滤波。 因此，即使在普通视频信号的空间频率和潜在噪声的空间频率已经被放大之后，空间域中的高频分量也可能被减小。 因此，可以降低或甚至防止不良的噪声引起的显示质量下降，同时由于灰度等级转换的促进而引起的像素响应速度增加。

公开(公告)号：US07382383B2

公开(公告)日：2008-06-03

申请号：US10815693

申请日：2004-04-02

申请人： Makoto Shiomi ,  Tomoo Furukawa ,  Koichi Miyachi ,  Kazunari Tomizawa

发明人： Makoto Shiomi ,  Tomoo Furukawa ,  Koichi Miyachi ,  Kazunari Tomizawa

IPC分类号： G09G5/10

CPC分类号： G09G3/3648 ,  G09G3/2011 ,  G09G3/2048 ,  G09G3/2051 ,  G09G5/02 ,  G09G2320/0252 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2340/0428 ,  G09G2340/16

摘要： A noise adding circuit adds noise data to video data, and a circuit rounds a less significant bit, so as to output video data of 6 bits from 8 bit input data for example. The video data of 6 bits is stored in a frame memory until a further next frame, and a previous frame grayscale correction circuit corrects video data of a previous frame as required so that the video data of the previous frame approaches video data of a further previous frame. It then outputs thus corrected video data. Further, a modulation processing section corrects video data of a current frame so as to emphasize grayscale transition from the video data of the previous frame which is outputted by the previous frame grayscale correction circuit. Thus, it is possible to realize a driving device of an image display device, which can improve a response speed of pixels and has a simple arrangement, without apparently deteriorating display quality of an image displayed in the pixels.

摘要翻译： 噪声加法电路将噪声数据添加到视频数据中，并且电路使较低有效位回合，以便例如从8位输入数据输出6位的视频数据。 6位的视频数据被存储在帧存储器中，直到另外的下一帧，并且前一帧灰度校正电路根据需要校正先前帧的视频数据，使得先前帧的视频数据接近另一前一帧的视频数据 帧。 然后输出这样校正的视频数据。 此外，调制处理部分校正当前帧的视频数据，以便强调从前一帧灰度校正电路输出的先前帧的视频数据的灰度转换。 因此，可以实现图像显示装置的驱动装置，其可以提高像素的响应速度并且具有简单的布置，而不会显着地劣化在像素中显示的图像的显示质量。

公开(公告)号：US20080074374A1

公开(公告)日：2008-03-27

申请号：US11980420

申请日：2007-10-31

申请人： Makoto Shiomi ,  Kazunari Tomizawa ,  Koichi Miyachi ,  Tomoo Furukawa

发明人： Makoto Shiomi ,  Kazunari Tomizawa ,  Koichi Miyachi ,  Tomoo Furukawa

IPC分类号： G09G3/36

CPC分类号： G09G3/3648 ,  G09G2320/0252 ,  G09G2340/16

摘要： In one embodiment of the present invention, data, such as video signal data, for example, for a next desired frame is first modulated or varied to facilitate a transition from a current frame to a next desired frame. A modulation processing section can be used, for example, to thus produce a corrected video signal to facilitate the current-to-next desired grayscale level transition. Thereafter, spatial filtering is then carried on the corrected video signal, using a spatial filtering section for example. As such, high frequency components in a spatial domain may be reduced, even after the spatial frequencies of an ordinary video signal and potentially those of noise have been scaled up. Therefore, undesirable noise-caused display quality degradation can be reduced or even prevented, while pixel response speed as a result of the facilitation of grayscale level transition is increased.

摘要翻译： 在本发明的一个实施例中，例如用于下一期望帧的诸如视频信号数据的数据首先被调制或变化，以便于从当前帧到下一个期望帧的转变。 例如，可以使用调制处理部分来产生经校正的视频信号，以便于当前到下一个期望的灰度级转换。 此后，使用例如空间滤波部分对校正后的视频信号进行空间滤波。 因此，即使在普通视频信号的空间频率和潜在噪声的空间频率已经被放大之后，空间域中的高频分量也可能被减小。 因此，可以降低或甚至防止不期望的噪声引起的显示质量下降，同时由于促进灰度等级转换而导致的像素响应速度增加。

公开(公告)号：US20060290855A1

公开(公告)日：2006-12-28

申请号：US11515273

申请日：2006-08-31

申请人： Nobuyuki Itoh ,  Akira Tagawa ,  Masaaki Kabe ,  Tomoo Furukawa

发明人： Nobuyuki Itoh ,  Akira Tagawa ,  Masaaki Kabe ,  Tomoo Furukawa

IPC分类号： G02F1/1337

CPC分类号： G02F1/133753 ,  G02F1/133512 ,  G02F1/133707 ,  G02F1/1393

摘要： A liquid crystal display apparatus includes: a pair of substrates opposing each other; a liquid crystal layer interposed between the pair of substrates, the liquid crystal layer containing liquid crystal molecules having a negative dielectric anisotropy; at least one electrode provided on each of the pair of substrates, the at least one electrode being used for applying an electric field across the liquid crystal layer; and at least one volume excluding member. One of the at least one volume excluding member is provided on the at least one electrode on at least one of the pair of substrates, the volume excluding member being provided so as to be on at least a portion of one side edge of the at least one electrode. A side of each of the pair of substrates facing the liquid crystal layer is subjected to a vertical alignment treatment. The liquid crystal molecules are tilted in a uniform direction from the at least one side edge of the at least one electrode to an opposite edge when a voltage is applied to the at least one electrode.

摘要翻译： 液晶显示装置包括：一对彼此相对的基板; 夹在所述一对基板之间的液晶层，所述液晶层包含具有负介电各向异性的液晶分子; 设置在所述一对基板的每一个上的至少一个电极，所述至少一个电极用于跨越所述液晶层施加电场; 和至少一个体积排除构件。 所述至少一个体积排除构件中的一个设置在所述一对基板中的至少一个基板上的所述至少一个电极上，所述体积排除构件设置成至少在所述一个基板的一个侧边缘的至少一部分上 一个电极。 面对液晶层的一对基板中的每一个的一侧进行垂直取向处理。 当向至少一个电极施加电压时，液晶分子在从至少一个电极的至少一个侧边缘到相对边缘的均匀方向上倾斜。

公开(公告)号：US20050024310A1

公开(公告)日：2005-02-03

申请号：US10804027

申请日：2004-03-19

申请人： Makoto Shiomi ,  Kazunari Tomizawa ,  Koichi Miyachi ,  Tomoo Furukawa

发明人： Makoto Shiomi ,  Kazunari Tomizawa ,  Koichi Miyachi ,  Tomoo Furukawa

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3648 ,  G09G3/2007 ,  G09G2310/0224 ,  G09G2320/0252 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2340/16

摘要： A liquid crystal display apparatus includes a plurality of areas in which response speeds greatly different from each other coexist in a pixel. A first replacement process section replaces the image data of the desired target frame with a first gradation, when a gradation transition from a current frame to a desired target frame corresponds to the above gradation transition. A second replacement process section replaces the image data of the current frame with a second value. The first value is set to a value causing the pixel to respond at a relatively higher speed without the occurrence of the excessive brightness. Without avoiding the deterioration of the image, it is possible to drive a liquid crystal display apparatus including areas whose response speeds are different from each other coexist in the pixel, such as a liquid crystal display apparatus of vertically aligned mode and normally black mode.

摘要翻译： 液晶显示装置包括多个区域，其中响应速度彼此大不相同，在像素中共存。 当从当前帧到期望目标帧的灰度转换对应于上述灰度转换时，第一替换处理部分用第一灰度代替期望目标帧的图像数据。 第二替换处理部分用第二值代替当前帧的图像数据。 将第一值设置为导致像素以相对较高的速度响应而不发生过度亮度的值。 在不避免图像劣化的情况下，可以驱动包括像素中的响应速度彼此不同的区域共同存在的液晶显示装置，例如垂直对准模式和常黑模式的液晶显示装置。

公开(公告)号：US6067130A

公开(公告)日：2000-05-23

申请号：US213375

申请日：1998-12-17

申请人： Eiji Okabe ,  Ryushi Shundo ,  Shinichi Saito ,  Hideo Saito ,  Takashi Kaneko ,  Tomoo Furukawa ,  Akira Sakaigawa ,  Mitsuhiro Koden

发明人： Eiji Okabe ,  Ryushi Shundo ,  Shinichi Saito ,  Hideo Saito ,  Takashi Kaneko ,  Tomoo Furukawa ,  Akira Sakaigawa ,  Mitsuhiro Koden

IPC分类号： G02F1/13 ,  C09K19/02 ,  C09K19/34 ,  C09K19/42 ,  G02F1/141 ,  G02F1/133

CPC分类号： C09K19/0225 ,  C09K19/42 ,  G02F1/141 ,  Y10T428/10

摘要： Ferroelectric liquid crystal compositions having a large dependency of spontaneous polarization on temperature; liquid crystal display devices exhibiting a small dependency of response speed on temperature and making it possible to obtain a wide temperature margin in practical use, and fabricated by using the ferroelectric liquid crystal composition; and methods for driving the devices are provided;the compositions comprising at least one compound expressed by the following general formula (1) ##STR1## at least one compound expressed by the following general formula (2), and ##STR2## at least one compound expressed by the following general formula (3) ##STR3## wherein R.sub.1 to R.sub.6, ring A-B, A, X.sub.1, and X.sub.2 are herein defined.

摘要翻译： 具有自发极化对温度的依赖性大的铁电液晶组合物; 显示响应速度对温度的依赖性小的液晶显示装置，并且可以在实际应用中获得宽的温度裕度，并且通过使用铁电液晶组合物制造; 并提供用于驱动装置的方法; 所述组合物包含至少一种由以下通式（1）表示的化合物，至少一种由以下通式（2）表示的化合物和至少一种由以下通式（3）表示的化合物：其中R1至R6，环 此处定义了AB，A，X1和X2。