公开(公告)号：US07535451B2

公开(公告)日：2009-05-19

申请号：US10822730

申请日：2004-04-13

申请人： Shinobu Nohtomi ,  Shigeru Ota ,  Shinya Suzuki ,  Yoshitaka Iwasaki ,  Masahito Fujihira

发明人： Shinobu Nohtomi ,  Shigeru Ota ,  Shinya Suzuki ,  Yoshitaka Iwasaki ,  Masahito Fujihira

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3614 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2330/021

摘要： There are provided a liquid crystal drive method, a liquid crystal display system and a liquid crystal drive control device, which can realize low power consumption at an alternating current drive of a liquid crystal panel. A common voltage given to a common electrode of a liquid crystal is switched between a positive phase and a negative phase. Display data is converted in such a manner that first display data and second display data selecting two of a plurality of gradation voltages in which magnitudes of potential differences in the pixel electrodes in the positive phase and the negative phase with reference to the common voltage corresponding to display data in a display memory are the same are in the same bit pattern except for one specified bit. For example, bit allocation of positive and negative gradation display data is made in such a manner that low-order bits other than the highest order bit are symmetric up and down in binary with respect to the middle.

摘要翻译： 提供了一种可在液晶面板的交流驱动下实现低功耗的液晶驱动方法，液晶显示系统和液晶驱动控制装置。 给予液晶的公共电极的公共电压在正相和负相之间切换。 转换显示数据，使得第一显示数据和第二显示数据选择多个灰度电压中的两个，其中参考相应于公共电压的正相和负相中的像素电极中的电位差的大小 显示存储器中的显示数据在相同的位模式中是相同的，除了一个指定的位。 例如，正和负灰度显示数据的位分配是这样一种方式：除了最高阶位之外的低阶位相对于中间是二进制对称的。

公开(公告)号：US20060227091A1

公开(公告)日：2006-10-12

申请号：US11395177

申请日：2006-04-03

申请人： Shinobu Nohtomi ,  Toshikazu Tachibana ,  Shinya Suzuki ,  Kazuo Okado

发明人： Shinobu Nohtomi ,  Toshikazu Tachibana ,  Shinya Suzuki ,  Kazuo Okado

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/2011 ,  G09G3/3614 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2300/0408 ,  G09G2310/0289 ,  G09G2310/0297 ,  G09G2320/0209

摘要： A semiconductor integrated circuit for driving a liquid crystal display, capable of improving the quality of an image displayed by preventing an imbalance between the outputs of a pair of amplifiers for positive voltage and negative voltage for AC driving of the liquid crystal panel and transmission of noise from one amplifier to the other amplifier is realized. A driver circuit that generates and outputs dive signals to be applied to signal lines of the liquid crystal panel includes decoder circuits, each of which selects a gray-scale voltage corresponding to image data. It also includes amplifiers for positive voltage which perform impedance conversion of positive voltages selected by the decoder circuits and amplifiers for negative voltage which perform impedance conversion of negative voltages selected by the decoder circuits. Furthermore, it includes an AC output section consisting of switch circuits, each of which alternately conducts an output of each amplifier for positive voltage to one of two adjacent output terminals and an output of each amplifier for negative voltage to the other one of the two adjacent terminals and vice versa. Two pairs of supply voltages having the same potential difference are generated as supply voltages to the amplifiers for positive voltage and the amplifiers for negative voltage and supplied through separate power supply lines.

公开(公告)号：US07573456B2

公开(公告)日：2009-08-11

申请号：US11434846

申请日：2006-05-17

申请人： Shinobu Nohtomi

发明人： Shinobu Nohtomi

IPC分类号： G09G3/36 ,  G06F3/038

CPC分类号： G09G3/3688 ,  G09G2310/0289 ,  G09G2330/021

摘要： A voltage impressed across the drain and source is reduced by further connecting in series one or two or more transistors between a couple of transistors in an output circuit including an output stage formed by connecting in series a couple of output transistors between a couple of power source voltage terminals and outputting the signal supplied to a gate signal generating circuit of a liquid crystal panel. Simultaneously, potential setting switch elements are also provided to prepare an intermediate potential of a couple of power source voltages and impress the intermediate potential to a base material of output transistors of the OFF state while the output transistors are turned OFF. Thereby, a liquid crystal display driving semiconductor integrated circuit may be realized. Accordingly, low manufacturing cost can also be realized without use of the high voltage resistance process by constituting a circuit for outputting the signal supplied to a gate signal generating circuit of a liquid crystal panel with an element having low resistance voltage. Moreover, operation rate of the output circuit can be improved and power consumption thereof can also be reduced.

摘要翻译： 通过在输出电路中的一对晶体管之间串联连接一个或两个或更多个晶体管来减少施加在漏极和源极之间的电压，该输出电路包括通过串联连接两对电源之间的一对输出晶体管而形成的输出级 并输出提供给液晶面板的门信号发生电路的信号。 同时，还提供电位设置开关元件以准备一对电源电压的中间电位，并且在输出晶体管截止时将中间电位施加到OFF状态的输出晶体管的基极材料。 由此，可以实现液晶显示驱动半导体集成电路。 因此，通过构成用于输出提供给具有低电阻电压的元件的液晶面板的门信号发生电路的信号的电路，也可以实现低制造成本，而不需要使用高电压电阻处理。 此外，可以提高输出电路的运行率，并且还可以降低其功耗。

公开(公告)号：US07567244B2

公开(公告)日：2009-07-28

申请号：US11395177

申请日：2006-04-03

申请人： Shinobu Nohtomi ,  Toshikazu Tachibana ,  Shinya Suzuki ,  Kazuo Okada

发明人： Shinobu Nohtomi ,  Toshikazu Tachibana ,  Shinya Suzuki ,  Kazuo Okada

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/2011 ,  G09G3/3614 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2300/0408 ,  G09G2310/0289 ,  G09G2310/0297 ,  G09G2320/0209

摘要： A semiconductor integrated circuit for driving a liquid crystal display, capable of improving the quality of an image displayed by preventing an imbalance between the outputs of a pair of amplifiers for positive voltage and negative voltage for AC driving of the liquid crystal panel and transmission of noise from one amplifier to the other amplifier is realized. A driver circuit that generates and outputs dive signals to be applied to signal lines of the liquid crystal panel includes decoder circuits, each of which selects a gray-scale voltage corresponding to image data. It also includes amplifiers for positive voltage which perform impedance conversion of positive voltages selected by the decoder circuits and amplifiers for negative voltage which perform impedance conversion of negative voltages selected by the decoder circuits. Furthermore, it includes an AC output section consisting of switch circuits, each of which alternately conducts an output of each amplifier for positive voltage to one of two adjacent output terminals and an output of each amplifier for negative voltage to the other one of the two adjacent terminals and vice versa. Two pairs of supply voltages having the same potential difference are generated as supply voltages to the amplifiers for positive voltage and the amplifiers for negative voltage and supplied through separate power supply lines.

摘要翻译： 一种用于驱动液晶显示器的半导体集成电路，其能够通过防止用于正电压的一对放大器的输出和用于液晶面板的AC驱动的负电压的输出之间的不平衡以及噪声的传输来提高显示的图像的质量 从一个放大器到另一个放大器实现。 生成并输出要施加到液晶面板的信号线的潜水信号的驱动电路包括解码器电路，每个解码器电路选择与图像数据对应的灰度电压。 它还包括用于正电压的放大器，其对由解码器电路选择的负电压进行阻抗转换的负电压执行由解码器电路和放大器选择的正电压的阻抗转换。 此外，它包括由开关电路组成的AC输出部分，每个交流电路交替地将两个相邻输出端子之一的正电压的每个放大器的输出和负电压的每个放大器的输出交替地传送到两个相邻的另一个 终端，反之亦然。 产生具有相同电位差的两对电源电压作为用于正电压的放大器的电源电压和用于负电压的放大器并通过单独的电源线提供。

公开(公告)号：US20060262068A1

公开(公告)日：2006-11-23

申请号：US11434846

申请日：2006-05-17

申请人： Shinobu Nohtomi

发明人： Shinobu Nohtomi

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G2310/0289 ,  G09G2330/021

摘要： A voltage impressed across the drain and source is reduced by further connecting in series one or two or more transistors between a couple of transistors in an output circuit including an output stage formed by connecting in series a couple of output transistors between a couple of power source voltage terminals and outputting the signal supplied to a gate signal generating circuit of a liquid crystal panel. Simultaneously, potential setting switch elements are also provided to prepare an intermediate potential of a couple of power source voltages and impress the intermediate potential to a base material of output transistors of the OFF state while the output transistors are turned OFF. Thereby, a liquid crystal display driving semiconductor integrated circuit may be realized. Accordingly, low manufacturing cost can also be realized without use of the high voltage resistance process by constituting a circuit for outputting the signal supplied to a gate signal generating circuit of a liquid crystal panel with an element having low resistance voltage. Moreover, operation rate of the output circuit can be improved and power consumption thereof can also be reduced.

公开(公告)号：US20050001798A1

公开(公告)日：2005-01-06

申请号：US10822730

申请日：2004-04-13

申请人： Shinobu Nohtomi ,  Shigeru Ota ,  Shinya Suzuki ,  Yoshitaka Iwasaki ,  Masahito Fujihira

发明人： Shinobu Nohtomi ,  Shigeru Ota ,  Shinya Suzuki ,  Yoshitaka Iwasaki ,  Masahito Fujihira

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

CPC分类号： G09G3/3688 ,  G09G3/3614 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2330/021

摘要： There are provided a liquid crystal drive method, a liquid crystal display system and a liquid crystal drive control device, which can realize low power consumption at an alternating current drive of a liquid crystal panel. A common voltage given to a common electrode of a liquid crystal is switched between a positive phase and a negative phase. Display data is converted in such a manner that first display data and second display data selecting two of a plurality of gradation voltages in which magnitudes of potential differences in the pixel electrodes in the positive phase and the negative phase with reference to the common voltage corresponding to display data in a display memory are the same are in the same bit pattern except for one specified bit. For example, bit allocation of positive and negative gradation display data is made in such a manner that low-order bits other than the highest order bit are symmetric up and down in binary with respect to the middle.

摘要翻译： 提供了一种可在液晶面板的交流驱动下实现低功耗的液晶驱动方法，液晶显示系统和液晶驱动控制装置。 给予液晶的公共电极的公共电压在正相和负相之间切换。 转换显示数据，使得第一显示数据和第二显示数据选择多个灰度电压中的两个，其中参考相应于公共电压的正相和负相中的像素电极中的电位差的大小 显示存储器中的显示数据在相同的位模式中是相同的，除了一个指定的位。 例如，正和负灰度显示数据的位分配是以除了最高阶位之外的低阶位相对于中间二进制对称上下对称的方式进行的。