公开(公告)号：US07698573B2

公开(公告)日：2010-04-13

申请号：US10397236

申请日：2003-03-27

申请人： Asahi Yamato ,  Toshihiro Yanagi

发明人： Asahi Yamato ,  Toshihiro Yanagi

IPC分类号： G06F1/26 ,  G06F1/32

CPC分类号： G09G3/3696 ,  G09G2310/0245 ,  G09G2330/02

摘要： A power source apparatus for a display is provided, which comprises a voltage generating section capable of controlling outputting or output termination of one or more predetermined output voltages, and a switching section provided between an output terminal of the predetermined output voltage and a predetermined reference potential terminal. The switch section is turned from OFF to ON when the voltage generating section performs the output termination control.

公开(公告)号：US07696969B2

公开(公告)日：2010-04-13

申请号：US11898559

申请日：2007-09-13

申请人： Toshihiro Yanagi ,  Hideki Morii ,  Hidekazu Miyata

发明人： Toshihiro Yanagi ,  Hideki Morii ,  Hidekazu Miyata

IPC分类号： G09G3/36

CPC分类号： G09G3/3677 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2310/066 ,  G09G2320/0204 ,  G09G2320/0219 ,  G09G2320/0223 ,  G09G2320/0247

摘要： In the display device and the display method of the present invention, a scanning signal line driving circuit controls falls of a scanning signal line, so as to make level shifts occurring to pixel potentials substantially uniform throughout display plane, the level shifts being caused by parasitic capacitances which parasitically exist in scanning signal lines. Fall waveforms of the scanning signal change at a change rate Sx which is a change quantity per unit time, and by desirably setting the change rate Sx, a change rate Sx1 in the vicinity of an input-side end of the scanning signal line and a change rate SxN in the vicinity of the other end thereof are substantially equal to each other, not being influenced by signal delay transmission characteristic which the scanning signal line possesses, like scanning signal line waveforms Vg(1, j) and Vg(N, j).

摘要翻译： 在本发明的显示装置和显示方法中，扫描信号线驱动电路控制扫描信号线的下降，使得在显示面上使像素电位发生大致均匀的电平偏移，电平偏移由寄生 寄生在扫描信号线上的电容。 扫描信号的下降波形以每单位时间的变化量的变化率Sx变化，并且希望将变化率Sx设定为扫描信号线的输入侧端部附近的变化率Sx1， 像扫描信号线波形Vg（1，j）和Vg（N，j）一样，其另一端附近的变化率SxN基本相等，不受扫描信号线所具有的信号延迟传输特性的影响 ）。

公开(公告)号：US20090295779A1

公开(公告)日：2009-12-03

申请号：US12309978

申请日：2007-06-08

申请人： Toshihiro Yanagi ,  Takuji Miyamoto ,  Atsuhito Murai

发明人： Toshihiro Yanagi ,  Takuji Miyamoto ,  Atsuhito Murai

IPC分类号： G09G5/00

CPC分类号： G09G3/3677 ,  G09G5/008 ,  G09G2310/062 ,  G09G2310/08 ,  G09G2370/08

摘要： In one embodiment of the present invention, a display controller includes a stable pixel writing period in one horizontal period in a display device, the stable pixel writing period being a period during which a voltage outputted from a gate driver is at a high level. The display controller also includes a first stable pixel writing period determination circuit which determines, by using a reference signal independent from the frame rate in the display device, the stable pixel writing period during which the voltage is at the high level. Thus, the display controller can be provided in which, regardless of whether and how the frame rate is changed, the stable pixel writing period can be of a target length.

摘要翻译： 在本发明的一个实施例中，显示控制器包括在显示设备中的一个水平周期中的稳定的像素写入周期，稳定的像素写入周期是从栅极驱动器输出的电压处于高电平的期间。 显示控制器还包括第一稳定像素写入周期确定电路，其通过使用独立于显示装置中的帧速率的参考信号来确定电压处于高电平的稳定像素写入周期。 因此，可以提供显示控制器，其中，无论帧速率是否改变和如何改变，稳定的像素写入周期可以是目标长度。

公开(公告)号：US20090262124A1

公开(公告)日：2009-10-22

申请号：US12309866

申请日：2007-06-14

申请人： Keiichi Yamamoto ,  Asahi Yamato ,  Kohji Saitoh ,  Akizumi Fujioka ,  Toshihiro Yanagi

发明人： Keiichi Yamamoto ,  Asahi Yamato ,  Kohji Saitoh ,  Akizumi Fujioka ,  Toshihiro Yanagi

IPC分类号： G06F12/02

CPC分类号： G09G3/3611 ,  G09G2310/08 ,  G09G2320/0252 ,  G09G2320/041 ,  G09G2340/16

摘要： In one embodiment of the present invention, LUTs (T3) through (T5) are stored in a table memory. When an overshoot calculation section switches over from the LUT (T4), which is being used, to the LUT (T5), the overshoot calculation section obtains the LUT (T5) not out of an external memory but out of the table memory. At this time, in order that the overshoot calculation section can switch over quickly from the LUT (T5) to an LUT (T6) at the next time, a table managing section deletes, from the internal memory, the LUT (T3) to which the LUT (T5) does not switch over directly, meanwhile the table managing section obtains the LUT from the external memory so as to store the LUT (T6) in the table memory. With the arrangement, it becomes possible for a drive circuit to (i) operate at the same processing speed as a drive circuit in which all tables are stored in the internal memory, and simultaneously, (ii) reduce the amount of memory.

摘要翻译： 在本发明的一个实施例中，LUT（T3）至（T5）被存储在表存储器中。 当过冲计算部分从正在使用的LUT（T4）切换到LUT（T5）时，过冲计算部分获得不在外部存储器中而不在表存储器中的LUT（T5）。 此时，为了使冲突计算部能够在下一次从LUT（T5）迅速切换到LUT（T6），表管理部从内部存储器中删除LUT（T3） LUT（T5）不直接切换，同时表管理部分从外部存储器获取LUT，以便将LUT（T6）存储在表存储器中。 通过这种布置，驱动电路可以（i）以与所有表存储在内部存储器中的驱动电路相同的处理速度进行操作，并且同时（ii）减少存储器的量。

公开(公告)号：US20090207163A1

公开(公告)日：2009-08-20

申请号：US12309489

申请日：2007-06-06

申请人： Asahi Yamato ,  Kohji Saitoh ,  Akizumi Fujioka ,  Keiichi Yamamoto ,  Toshihiro Yanagi

发明人： Asahi Yamato ,  Kohji Saitoh ,  Akizumi Fujioka ,  Keiichi Yamamoto ,  Toshihiro Yanagi

IPC分类号： G09G5/00

CPC分类号： G09G3/3648 ,  G09G3/2096 ,  G09G3/3614 ,  G09G2320/0252 ,  G09G2320/0261 ,  G09G2320/0285 ,  G09G2320/046 ,  G09G2360/18

摘要： In one embodiment of the present application, a memory stores a lookup table storing, in accordance with a combination of a value of a video signal of a current frame and a value of a video signal of a previous frame, each of correction values, the correction values in each of which a temporal change of a video signal is enhanced. A correcting circuit carries out, with respect to a correction value selected from the lookup table, a predetermined correcting operation in accordance with a polarity of a voltage to be applied to each of data signal lines S1 through Sm, with the use of a correction coefficient which is set based on properties of liquid crystal. Thus found is a corrected video signal in accordance with a positive or negative polarity. This makes it possible to find, with less memory capacity, an optimum corrected video signal in accordance with a polarity of a voltage to be applied to a data signal line.

摘要翻译： 在本申请的一个实施例中，存储器存储查找表，该查找表根据当前帧的视频信号的值与前一帧的视频信号的值的组合存储每个校正值， 每个视频信号的时间变化增强的校正值。 校正电路相对于从查找表中选择的校正值，根据要施加到每个数据信号线S1至Sm的电压的极性，执行预定的校正操作，使用校正系数 其基于液晶的性质而设定。 这样找到的是根据正或负极性的校正视频信号。 这使得可以根据要施加到数据信号线的电压的极性，以更少的存储容量找到最佳校正视频信号。

公开(公告)号：US20090079682A1

公开(公告)日：2009-03-26

申请号：US11886958

申请日：2006-02-02

申请人： Asahi Yamato ,  Yuki Kawashima ,  Kiyoshi Nakagawa ,  Kohzoh Takahashi ,  Toshihiro Yanagi

发明人： Asahi Yamato ,  Yuki Kawashima ,  Kiyoshi Nakagawa ,  Kohzoh Takahashi ,  Toshihiro Yanagi

IPC分类号： G09G3/36

CPC分类号： G09G3/3696 ,  G09G3/3406 ,  G09G2320/0252 ,  G09G2320/0271 ,  G09G2320/0613 ,  G09G2320/066 ,  G09G2320/0673 ,  G09G2340/16

摘要： In one embodiment of the present invention, when a still image is displayed, applied voltages respectively corresponding to a total of n (n being an integer of not less than 4) types of gradation 0 to (n−1) are outputted to pixels. On the other hand, when a moving image is displayed, an applied voltage corresponding to a predetermined gradation m (1≦m≦(n−2)) is applied to the pixels instead of applied voltages respectively corresponding to gradations of less than the predetermined gradation m.

摘要翻译： 在本发明的一个实施例中，当显示静止图像时，分别对应于n（n是不小于4的整数）的灰度级0至（n-1）的总和的施加电压被输出到像素。 另一方面，当显示运动图像时，将对应于预定灰度m（1 <= m <=（n-2））的施加电压施加到像素，而不是施加分别对应于小于等于 预定灰度m。

公开(公告)号：US20070279402A1

公开(公告)日：2007-12-06

申请号：US11632056

申请日：2005-07-11

申请人： Ken Inada ,  Takuya Tsuda ,  Toshihiro Yanagi

发明人： Ken Inada ,  Takuya Tsuda ,  Toshihiro Yanagi

IPC分类号： G09G3/36

CPC分类号： G09G3/3685 ,  G09G3/2059 ,  G09G2310/0218 ,  G09G2310/027 ,  H01L2924/12041

摘要： The present invention relates to a video signal line drive circuit of a display device. An object of the present invention is to, when gradation conversion is performed in the display device using an error diffusion method, provide a display with a smooth gradation change even at boundaries of display blocks. In an error diffusion operation circuit (36) of a source driver unit (302), an error diffusion process is performed for each pixel based on, in addition to image data (Da) for a display block of the source driver unit (302), image data (Da) for areas near boundaries between the display block of the source driver unit (302) and display blocks of source driver units (301, 303) in previous and subsequent stages. A video signal is generated based on error-diffused image data (Db) generated by the error diffusion process.

摘要翻译： 本发明涉及一种显示装置的视频信号线驱动电路。 本发明的目的在于，在使用误差扩散方法的显示装置中进行灰度转换时，即使在显示块的边界也提供平滑的灰度变化的显示。 在源极驱动器单元（302）的误差扩散运算电路（36）中，除了源极驱动器单元（302）的显示块的图像数据（Da）之外，还对每个像素进行误差扩散处理， ，用于在源驱动器单元（302）的显示块和前一级和后续级中的源驱动器单元（301,303）的显示块之间的边界附近的区域的图像数据（Da）。 基于由误差扩散处理产生的误差扩散图像数据（Db）产生视频信号。

公开(公告)号：US07126595B2

公开(公告)日：2006-10-24

申请号：US09924698

申请日：2001-08-08

申请人： Toshihiro Yanagi ,  Kouji Kumada ,  Takashige Ohta

发明人： Toshihiro Yanagi ,  Kouji Kumada ,  Takashige Ohta

IPC分类号： G09G5/00 ,  G09G3/36 ,  G02F1/1343

CPC分类号： H02M3/073 ,  G09G3/3611 ,  G09G3/3696 ,  G09G2300/08 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/023

摘要： Adapting to load currents which differ by more than 100 times between a scanning mode and a hold mode, a frequency of pump operation is decided according to the maximum value of the load currents, and circuit elements of a power supply, for example, such as capacitance of a capacitor for pump operation or a smoothing capacitor, element configurations of switching elements, or capacitance or resistance value of a CR oscillator are set based on this frequency, so that a load current detector lowers the frequency of the pump operation under light load to reduce a self-loss of power in the power supply. This realizes a charge-pump power supply which is installed in a liquid crystal display device of a terminal device of a portable phone, with reduced power consumption under light load and a longer standby time.

摘要翻译： 适应于在扫描模式和保持模式之间相差大于100倍的负载电流，根据负载电流的最大值和电源的电路元件决定泵运行频率，例如 基于该频率设置用于泵运行的电容器的电容或平滑电容器，开关元件的元件配置或CR振荡器的电容或电阻值，使得负载电流检测器降低在轻负载下的泵操作的频率 以减少电源中的电力自身损耗。 这实现了安装在便携式电话的终端装置的液晶显示装置中的电荷泵电源，其在轻负载下的功耗降低和待机时间更长。

公开(公告)号：US07098901B2

公开(公告)日：2006-08-29

申请号：US10176243

申请日：2002-06-20

申请人： Taketoshi Nakano ,  Takafumi Kawaguchi ,  Toshihiro Yanagi ,  Keishi Nishikubo

发明人： Taketoshi Nakano ,  Takafumi Kawaguchi ,  Toshihiro Yanagi ,  Keishi Nishikubo

IPC分类号： G09G5/00

CPC分类号： G09G3/3611 ,  G09G3/20 ,  G09G3/3685 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/0275

摘要： A display device includes a display panel including a bus line section; and at least one driver for driving the bus line section included in the display panel. Each of the at least one driver includes an amplifier for generating a non-driving signal based on an input signal, the non-driving signal not contributing to driving of the bus line section.

公开(公告)号：US20060077163A1

公开(公告)日：2006-04-13

申请号：US11237827

申请日：2005-09-29

申请人： Toshihiro Yanagi ,  Hideki Morii ,  Hidekazu Miyata

发明人： Toshihiro Yanagi ,  Hideki Morii ,  Hidekazu Miyata

IPC分类号： G09G3/36

CPC分类号： G09G3/3677 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2310/066 ,  G09G2320/0204 ,  G09G2320/0219 ,  G09G2320/0223 ,  G09G2320/0247

摘要： In the display device and the display method of the present invention, a scanning signal line driving circuit controls falls of a scanning signal line, so as to make level shifts occurring to pixel potentials substantially uniform throughout display plane, the level shifts being caused by parasitic capacitances which parasitically exist in scanning signal lines. Fall waveforms of the scanning signal change at a change rate Sx which is a change quantity per unit time, and by desirably setting the change rate Sx, a change rate Sxl in the vicinity of an input-side end of the scanning signal line and a change rate SxN in the vicinity of the other end thereof are substantially equal to each other, not being influenced by signal delay transmission characteristic which the scanning signal line possesses, like scanning signal line waveforms Vg(1, j) and Vg(N, j).

摘要翻译： 在本发明的显示装置和显示方法中，扫描信号线驱动电路控制扫描信号线的下降，使得在显示面上使像素电位发生大致均匀的电平偏移，电平偏移由寄生 寄生在扫描信号线上的电容。 扫描信号的下降波形以每单位时间的变化量的变化率Sx变化，并且希望将变化率Sx设定为扫描信号线的输入侧端部附近的变化率Sx1， 像扫描信号线波形Vg（1，j）和Vg（N，j）一样，其另一端附近的变化率SxN基本相等，不受扫描信号线所具有的信号延迟传输特性的影响 ）。