公开(公告)号：US06414668B1

公开(公告)日：2002-07-02

申请号：US09234511

申请日：1999-01-21

申请人： Masao Karube ,  Kazuo Nakamura ,  Masaki Miyatake ,  Hoko Hirai ,  Akihiko Saitoh ,  Yoshiro Aoki

发明人： Masao Karube ,  Kazuo Nakamura ,  Masaki Miyatake ,  Hoko Hirai ,  Akihiko Saitoh ,  Yoshiro Aoki

IPC分类号： G09G336

CPC分类号： G09G3/3688 ,  G09G3/2011 ,  G09G3/3614 ,  G09G2320/02

摘要： Arrangement of connection points of sampling switches to video bus lines within a signal line drive circuit 200 is improved such that connection points of video buses (SVn1 to SVn6) supplied with positive-polarity video signals relative to a predetermined reference potential and video buses (SVp1 to SVp6) supplied with negative-polarity video signals to analog switches (SWn11 to SWn22 and SWp11 to SWp22) make substantially symmetric patterns in the extending direction of the video buses. Since the sum of lengths of connection wirings belonging to a switch pair and their total resistance value becomes substantially equal in all switch pairs, the effective vales of shift amounts in signal line potentials are substantially flattened. Therefore, here is provided a drive circuit built-in liquid crystal display device realizing a good imaging quality removing noise such as stripe-shaped imaging defects which may occur when video signals are supplied to analog switches through a plurality of video buses.

摘要翻译： 改进采样开关到信号线驱动电路200内的视频总线的连接点的布置，使得提供有相对于预定参考电位的正极性视频信号的视频总线（SVn1至SVn6）的连接点和视频总线（SVp1 提供给模拟开关（SWn11〜SWn22，SWp11〜SWp22）的负极性视频信号的SVp6在视频总线的延伸方向上形成大致对称的图形。 由于属于开关对的连接布线的长度总和及其总电阻值在所有开关对中变得基本相等，所以信号线电位中的移位量的有效值基本上变平。 因此，这里提供了一种内置液晶显示装置的驱动电路，其实现了通过多个视频总线向视频信号提供视频信号时可能出现的诸如条纹成像缺陷之类的成像质量消除噪声。

公开(公告)号：US6072456A

公开(公告)日：2000-06-06

申请号：US34174

申请日：1998-03-03

申请人： Masao Karube ,  Yoshiro Aoki

发明人： Masao Karube ,  Yoshiro Aoki

IPC分类号： G02F1/133 ,  G09G3/36

CPC分类号： G09G3/3688 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2310/0218

摘要： A flat-panel display device includes a display panel plate, a plurality of display pixels arrayed in a matrix on the display panel plate, a plurality of signal lines formed on the display panel plate along columns of the display pixels, a scanning line driving circuit formed on the display panel plate, for sequentially and periodically selecting rows of the display pixels to connect the display pixels of a selected row to the signal lines, and a signal line driver circuit formed on the display panel plate for driving the display pixels of a selected row via the signal lines. Particularly, the signal line driving circuit includes a plurality of signal line driver blocks which are arranged to partition the signal lines into signal line groups each constituted by a predetermined number of adjacent signal lines, receive individual video signals supplied for the signal line groups from an outside of the display panel plate, and perform operations of driving the signal line groups on the basis of the individual video signals, in parallel.

摘要翻译： 平板显示装置包括显示面板板，在显示面板板上排列成矩阵状的多个显示像素，沿显示像素的列形成在显示面板板上的多条信号线，扫描线驱动电路 形成在显示面板板上，用于顺序地和周期性地选择显示像素的行以将所选行的显示像素连接到信号线;以及信号线驱动电路，形成在显示面板板上，用于驱动显示像素的显示像素 通过信号线选择行。 特别地，信号线驱动电路包括多个信号线驱动器模块，其被布置为将信号线划分成由预定数量的相邻信号线构成的信号线组，从一个或多个信号线组中提供的各个视频信号 在显示面板板外部，并行地并行地进行基于各视频信号驱动信号线组的动作。

公开(公告)号：US20060119563A1

公开(公告)日：2006-06-08

申请号：US11339552

申请日：2006-01-26

申请人： Takashi Nakamura ,  Hirotaka Hayashi ,  Hisao Fujiwara ,  Masao Karube ,  Kazuo Nakamura ,  Masakatsu Kitani

发明人： Takashi Nakamura ,  Hirotaka Hayashi ,  Hisao Fujiwara ,  Masao Karube ,  Kazuo Nakamura ,  Masakatsu Kitani

IPC分类号： G09G3/36

CPC分类号： G09G3/2011 ,  G09G3/3688 ,  G09G2300/0408 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2330/02 ,  G09G2330/021 ,  H03M1/804

摘要： A signal line drive circuit according to the present invention has: a latch circuit which latches digital pixel data; a D/A converter which converts a latch output from the latch circuit into an analog video signal; an AMP which amplifies the analog video signal converted by the D/A converter; and a signal selection circuit which selects a signal line to which the analog video signal amplified by the AMP is supplied. The AMP has: an odd number of inverters which are cascade-connected; capacitor elements which are respectively connected between stages of the inverters and between an input terminal of the inverter on a first stage and an output terminal of the inverter on a last stage; a first power supply line which supplies a power supply voltage to the inverter on the first stage; and a second power supply line which supplies a power supply voltage to inverters other than the inverter on the first stage. The accuracy of the AMP can be improved by separating the power supply line for only the inverter on the first stage.

公开(公告)号：US06600435B2

公开(公告)日：2003-07-29

申请号：US10095916

申请日：2002-03-13

申请人： Masao Karube

发明人： Masao Karube

IPC分类号： H03M166

CPC分类号： H03M1/66

摘要： A digital-analog converting circuit capable of shortening time necessary to digital-analog conversion. The converting circuit includes first switching circuits for turning on/off in accordance with a digital pixel signal, second switching circuits connected to the first switching circuit, first through third capacitors, and third through seventh switching circuits. Electric charges corresponding to the digital pixel signal are accumulated in the second capacitors. When the accumulation of the electric charges is completed, the switching circuit is turned on in order to transfer the accumulated electric charges into the third capacitor. Because of this, during an OFF period of the switching circuit, the third capacitor can hold the electric charge in accordance with the pixel data.

摘要翻译： 数模转换电路能够缩短数模转换所需的时间。 转换电路包括根据数字像素信号接通/断开的第一开关电路，连接到第一开关电路的第二开关电路，第一至第三电容器以及第三至第七开关电路。 对应于数字像素信号的电荷被累积在第二电容器中。 当电荷累积完成时，开关电路导通，以将累积的电荷转移到第三电容器中。 因此，在切换电路的OFF周期期间，第三电容器可以根据像素数据保持电荷。

公开(公告)号：US06456282B1

公开(公告)日：2002-09-24

申请号：US09696971

申请日：2000-10-27

申请人： Masao Karube

发明人： Masao Karube

IPC分类号： G09G500

CPC分类号： G09G3/3688 ,  G09G2310/0291

摘要： A inverting amplifier circuit 10 for controlling the voltage of the signal line S is provided in a load drive circuit 11. Before the inverting amplifier circuit 10 controls the voltage of the signal line S, the voltage of each inverter INV1 to INV3 constituting the inverting amplifier circuit 10 is set at the voltage substantially equal to each threshold voltage thereof. As a result, even when the threshold voltages of the inverters INV1 to INV3 vary, it is possible that this would not exert any influence on the voltage of the signal line S. Therefore, it is possible to provide the load drive circuit 11 not to be affected by the variation of the characteristic of the inverting amplifier circuit 10.

摘要翻译： 用于控制信号线S的电压的反相放大器电路10设置在负载驱动电路11中。在反相放大器电路10控制信号线S的电压之前，构成反相放大器的每个反相器INV1至INV3的电压 电路10被设定为与其每个阈值电压基本相等的电压。 结果，即使当反相器INV1至INV3的阈值电压变化时，也可能不会对信号线S的电压施加任何影响。因此，可以将负载驱动电路11不提供给 受到反相放大器电路10的特性变化的影响。

公开(公告)号：US07777739B2

公开(公告)日：2010-08-17

申请号：US11339552

申请日：2006-01-26

申请人： Takashi Nakamura ,  Hirotaka Hayashi ,  Hisao Fujiwara ,  Masao Karube ,  Kazuo Nakamura ,  Masakatsu Kitani

发明人： Takashi Nakamura ,  Hirotaka Hayashi ,  Hisao Fujiwara ,  Masao Karube ,  Kazuo Nakamura ,  Masakatsu Kitani

IPC分类号： G09G5/00

CPC分类号： G09G3/2011 ,  G09G3/3688 ,  G09G2300/0408 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2330/02 ,  G09G2330/021 ,  H03M1/804

摘要： A signal line drive circuit according to the present invention has: a latch circuit which latches digital pixel data; a D/A converter which converts a latch output from the latch circuit into an analog video signal; an AMP which amplifies the analog video signal converted by the D/A converter; and a signal selection circuit which selects a signal line to which the analog video signal amplified by the AMP is supplied. The AMP has: an odd number of inverters which are cascade-connected; capacitor elements which are respectively connected between stages of the inverters and between an input terminal of the inverter on a first stage and an output terminal of the inverter on a last stage; a first power supply line which supplies a power supply voltage to the inverter on the first stage; and a second power supply line which supplies a power supply voltage to inverters other than the inverter on the first stage. The accuracy of the AMP can be improved by separating the power supply line for only the inverter on the first stage.

摘要翻译： 根据本发明的信号线驱动电路具有锁存数字像素数据的锁存电路; D / A转换器，其将来自锁存电路的锁存器输出转换为模拟视频信号; 放大由D / A转换器转换的模拟视频信号的AMP; 以及信号选择电路，其选择供给由AMP放大的模拟视频信号的信号线。 AMP具有：奇数级逆变器级联; 电容器元件分别连接在反相器的级之间，在第一级的反相器的输入端和最后级的反相器的输出端之间; 在第一级上向逆变器供给电源电压的第一电源线; 以及第二电源线，其向第一级上的逆变器的逆变器供给电源电压。 通过在第一级分离仅逆变器的电源线，可以提高AMP的精度。

公开(公告)号：US07187421B2

公开(公告)日：2007-03-06

申请号：US10886628

申请日：2004-07-09

申请人： Takanori Tsunashima ,  Hiroyuki Kimura ,  Masao Karube ,  Hisao Fujiwara

发明人： Takanori Tsunashima ,  Hiroyuki Kimura ,  Masao Karube ,  Hisao Fujiwara

IPC分类号： G02F1/136

CPC分类号： G09G3/3655 ,  G09G3/3614 ,  G09G2300/0876 ,  G09G2330/02

摘要： A liquid crystal display according to one embodiment of the present invention, comprising: signal lines and scanning lines arranged in first and second directions on an insulation substrate; display elements formed in vicinity of cross points of the signal lines and scanning lines; liquid crystal capacitors and auxiliary capacitors which accumulate electric charge in accordance with voltages of the signal lines via said display elements; a signal line drive circuit which drives the signal lines; a scanning line drive circuit which drives the scanning lines; auxiliary capacitor power supply lines arranged in the first direction, to which one ends of said auxiliary capacitors arranged in the second direction are commonly connected; and auxiliary capacitor power supply line voltage control circuits which control voltages of said auxiliary capacitor power supply lines in sync with a cycle which drives said liquid crystal capacitors and said auxiliary capacitors by polarity reverse, wherein said auxiliary capacitor power supply line voltage control circuit supplies a first reference voltage to all of said auxiliary capacitor power supply lines during a predetermine period after power-on.

摘要翻译： 根据本发明的一个实施例的液晶显示器，包括：在绝缘基板上沿第一和第二方向布置的信号线和扫描线; 形成在信号线和扫描线的交叉点附近的显示元件; 液晶电容器和辅助电容器，其通过所述显示元件根据信号线的电压累积电荷; 驱动信号线的信号线驱动电路; 驱动扫描线的扫描线驱动电路; 辅助电容器电源线布置在第一方向上，所述辅助电容器的沿第二方向布置的一端共同连接到该辅助电容器电源线; 以及辅助电容器电源线电压控制电路，其将所述辅助电容器电源线的电压与通过极性反向驱动所述液晶电容器和所述辅助电容器的周期同步，其中所述辅助电容器电源线电压控制电路提供 在上电之后的预定时段期间，向所有辅助电容器电源线提供第一参考电压。

公开(公告)号：US07136058B2

公开(公告)日：2006-11-14

申请号：US10132521

申请日：2002-04-26

申请人： Takashi Nakamura ,  Hirotaka Hayashi ,  Hisao Fujiwara ,  Masao Karube ,  Kazuo Nakamura ,  Masakatsu Kitani

发明人： Takashi Nakamura ,  Hirotaka Hayashi ,  Hisao Fujiwara ,  Masao Karube ,  Kazuo Nakamura ,  Masakatsu Kitani

IPC分类号： G09G5/00

CPC分类号： G09G3/2011 ,  G09G3/3688 ,  G09G2300/0408 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2330/02 ,  G09G2330/021 ,  H03M1/804

摘要： A signal line drive circuit according to the present invention has: a latch circuit which latches digital pixel data; a D/A converter which converts a latch output from the latch circuit into an analog video signal; an AMP which amplifies the analog video signal converted by the D/A converter; and a signal selection circuit which selects a signal line to which the analog video signal amplified by the AMP is supplied. The AMP has: an odd number of inverters which are cascade-connected; capacitor elements which are respectively connected between stages of the inverters and between an input terminal of the inverter on a first stage and an output terminal of the inverter on a last stage; a first power supply line which supplies a power supply voltage to the inverter on the first stage; and a second power supply line which supplies a power supply voltage to inverters other than the inverter on the first stage. The accuracy of the AMP can be improved by separating the power supply line for only the inverter on the first stage.

公开(公告)号：US20050099167A1

公开(公告)日：2005-05-12

申请号：US10971068

申请日：2004-10-25

申请人： Masao Karube

发明人： Masao Karube

IPC分类号： G02F1/133 ,  G05F1/40 ,  G09G3/20 ,  G09G3/36 ,  H02M3/07

CPC分类号： H02M3/073 ,  H02M2003/078

摘要： In order to restrict variations of an output voltage of a DC-DC conversion circuit using TFTs, in a boost-type, a second n-ch TFT N2 and a second p-ch TFT P2 are newly provided. With regard to the second n-ch TFT N2, a gate thereof is connected to a second capacitor C2, a source thereof is connected to a first reference voltage source YVDD, and a drain thereof is connected to a first capacitor C1. With regard to the second p-ch TFT P2, a gate thereof is connected to the second capacitor C2, a source thereof is connected to a third capacitor C3, and a drain thereof is connected to the first capacitor C1. Thus, a voltage at the first capacitor C1 stops being influenced by the variations of a threshold voltage between a source and drain of a first diode D1.

摘要翻译： 为了限制使用TFT的DC-DC转换电路的输出电压的变化，在升压型中，新提供第二n-ch TFT N 2和第二p-ch TFT P 2。 关于第二n沟道TFT N 2，其栅极连接到第二电容器C 2，其源极连接到第一参考电压源YVDD，并且其漏极连接到第一电容器C 1。 关于第二p-ch TFT P 2，其栅极连接到第二电容器C 2，其源极连接到第三电容器C 3，并且其漏极连接到第一电容器C 1。 因此，第一电容器C 1处的电压停止受第一二极管D1的源极和漏极之间的阈值电压的变化的影响。

公开(公告)号：US20050036078A1

公开(公告)日：2005-02-17

申请号：US10886628

申请日：2004-07-09

申请人： Takanori Tsunashima ,  Hiroyuki Kimura ,  Masao Karube ,  Hisao Fujiwara

发明人： Takanori Tsunashima ,  Hiroyuki Kimura ,  Masao Karube ,  Hisao Fujiwara

IPC分类号： G02F1/133 ,  G02F1/1343 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3655 ,  G09G3/3614 ,  G09G2300/0876 ,  G09G2330/02

摘要： A liquid crystal display according to one embodiment of the present invention, comprising: signal lines and scanning lines arranged in first and second directions on an insulation substrate; display elements formed in vicinity of cross points of the signal lines and scanning lines; liquid crystal capacitors and auxiliary capacitors which accumulate electric charge in accordance with voltages of the signal lines via said display elements; a signal line drive circuit which drives the signal lines; a scanning line drive circuit which drives the scanning lines; auxiliary capacitor power supply lines arranged in the first direction, to which one ends of said auxiliary capacitors arranged in the second direction are commonly connected; and auxiliary capacitor power supply line voltage control circuits which control voltages of said auxiliary capacitor power supply lines in sync with a cycle which drives said liquid crystal capacitors and said auxiliary capacitors by polarity reverse, wherein said auxiliary capacitor power supply line voltage control circuit supplies a first reference voltage to all of said auxiliary capacitor power supply lines during a predetermine period after power-on.

摘要翻译： 根据本发明的一个实施例的液晶显示器，包括：在绝缘基板上沿第一和第二方向布置的信号线和扫描线; 形成在信号线和扫描线的交叉点附近的显示元件; 液晶电容器和辅助电容器，其通过所述显示元件根据信号线的电压累积电荷; 驱动信号线的信号线驱动电路; 驱动扫描线的扫描线驱动电路; 辅助电容器电源线布置在第一方向上，所述辅助电容器的沿第二方向布置的一端共同连接到该辅助电容器电源线; 以及辅助电容器电源线电压控制电路，其将所述辅助电容器电源线的电压与通过极性反向驱动所述液晶电容器和所述辅助电容器的周期同步，其中所述辅助电容器电源线电压控制电路提供 在上电之后的预定时段期间，向所有辅助电容器电源线提供第一参考电压。