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公开(公告)号：US20100265242A1
公开(公告)日：2010-10-21
申请号：US12760582
申请日：2010-04-15
申请人： Naoki TAKADA , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Akihito Akai
发明人： Naoki TAKADA , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Akihito Akai
CPC分类号： H02M3/156
摘要： A power circuit includes a coil that charges an electric charge of an input voltage, a switch device that controls charging and discharging of the coil, a diode that rectifies the flow of the electric charge from the coil, a capacitor that stabilizes an output voltage when the switch device is turned on, and a driving circuit that controls ON and OFF states of the switch device. The power circuit alternately switches the ON and OFF states of the switch device to control charging and discharging of the coil and the capacitor, and generates and supplies an output voltage higher than the input voltage, and the driving circuit controls the off-period of the switch device according to the on-period of the switch device and the voltage ratio of the output voltage and the input voltage while changing the repetition period of the ON and OFF states of the switch device.
摘要翻译： 电源电路包括对输入电压的电荷进行充电的线圈，控制线圈的充电和放电的开关装置，对来自线圈的电荷的流量进行整流的二极管，稳定输出电压的电容器， 开关装置被接通，以及控制开关装置的ON和OFF状态的驱动电路。 电源电路交替地切换开关器件的导通和截止状态，以控制线圈和电容器的充电和放电，并产生并提供高于输入电压的输出电压，并且驱动电路控制 开关装置根据开关装置的导通周期和开关装置的ON和OFF状态的重复周期，输出电压和输入电压的电压比。
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2.发明授权公开(公告)号：US08339390B2
公开(公告)日：2012-12-25
申请号：US12625683
申请日：2009-11-25
申请人： Naoki Takada , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Yoshihiro Kotani
发明人： Naoki Takada , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Yoshihiro Kotani
IPC分类号： G06F3/038
CPC分类号： G09G3/3696 , G09G2330/02 , G09G2330/021 , H02M3/07 , H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： Provided are a power supply circuit and a display device which are capable of enhancing power efficiency even when applied to a display panel whose current consumption varies. The power supply circuit boosts and outputs an input voltage using a booster chopper circuit. A frequency control circuit changes a frequency of a clock signal, which controls a switch of the chopper circuit, in accordance with a load of the power supply circuit. The frequency control circuit divides an operation of the display device into a display effective period at a high load and a vertical retrace period at a low load, based on a vertical synchronizing signal and a horizontal synchronizing signal. The frequency control circuit sets the frequency of the clock signal in a high-load period to be higher than that in a low-load period.
摘要翻译： 提供了即使在电流消耗变化的显示面板上也能够提高功率效率的电源电路和显示装置。 电源电路使用升压斩波电路来提升输出电压。 频率控制电路根据电源电路的负载改变控制斩波电路的开关的时钟信号的频率。 频率控制电路基于垂直同步信号和水平同步信号，在低负载下将显示装置的操作划分为高负载和垂直回扫周期的显示有效期间。 频率控制电路将高负载时段的时钟信号的频率设定为比低负载期间的频率高。
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3.发明申请公开(公告)号：US20100128022A1
公开(公告)日：2010-05-27
申请号：US12625683
申请日：2009-11-25
申请人： Naoki Takada , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Yoshihiro Kotani
发明人： Naoki Takada , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Yoshihiro Kotani
IPC分类号： G06F3/038
CPC分类号： G09G3/3696 , G09G2330/02 , G09G2330/021 , H02M3/07 , H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： Provided are a power supply circuit and a display device which are capable of enhancing power efficiency even when applied to a display panel whose current consumption varies. The power supply circuit boosts and outputs an input voltage using a booster chopper circuit. A frequency control circuit changes a frequency of a clock signal, which controls a switch of the chopper circuit, in accordance with a load of the power supply circuit. The frequency control circuit divides an operation of the display device into a display effective period at a high load and a vertical retrace period at a low load, based on a vertical synchronizing signal and a horizontal synchronizing signal. The frequency control circuit sets the frequency of the clock signal in a high-load period to be higher than that in a low-load period.
摘要翻译： 提供了即使在电流消耗变化的显示面板上也能够提高功率效率的电源电路和显示装置。 电源电路使用升压斩波电路来提升输出电压。 频率控制电路根据电源电路的负载改变控制斩波电路的开关的时钟信号的频率。 频率控制电路基于垂直同步信号和水平同步信号，在低负载下将显示装置的操作划分为高负载和垂直回扫周期的显示有效期间。 频率控制电路将高负载时段的时钟信号的频率设定为比低负载期间的频率高。
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公开(公告)号：US20060087483A1
公开(公告)日：2006-04-27
申请号：US11255152
申请日：2005-10-21
申请人： Naoki Takada , Yasuyuki Kudo , Takuya Eriguchi , Akihito Akai , Kazuo Okado
发明人： Naoki Takada , Yasuyuki Kudo , Takuya Eriguchi , Akihito Akai , Kazuo Okado
IPC分类号： G09G3/36
CPC分类号： G09G3/3688 , G09G2310/027 , G09G2320/0673
摘要： A liquid crystal display is provided with: a tap adjustment register for adjusting a gray scale level to a gray scale voltage in intermediate portions close to the end portions of the gamma characteristic; and a partial-voltage-ratio adjustment register for adjusting a ratio of a gray scale voltage among a plurality of gray scale levels in the intermediate portions close to the end portions of the gamma characteristic, in addition to an amplitude adjustment register for adjusting an amplitude of a gamma characteristic which determines a relation between gray scale levels and gray scale voltages or brightness levels on a display panel; a gradient adjustment register for adjusting a gradient of intermediate portions of the gamma characteristic while fixing end portions of the gamma characteristic; and a fine adjustment register for finely adjusting the intermediate portions of the gamma characteristic for each gray scale level.
摘要翻译： 液晶显示器具有：用于在靠近γ特性的端部的中间部分中将灰度级调整为灰度级电压的抽头调整寄存器; 以及分压比调节寄存器，用于调整靠近伽马特性的端部的中间部分中的多个灰度级之间的灰度电压的比例，以及用于调整幅度的幅度调整寄存器 确定显示面板上的灰度级与灰度级电压或亮度级之间的关系的伽马特性; 梯度调整寄存器，用于调整伽马特性的中间部分的梯度，同时固定伽马特性的端部; 以及精细调整寄存器，用于精细地调整每个灰度级的伽马特性的中间部分。
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公开(公告)号：US07760178B2
公开(公告)日：2010-07-20
申请号：US11255152
申请日：2005-10-21
申请人： Naoki Takada , Yasuyuki Kudo , Takuya Eriguchi , Akihito Akai , Kazuo Okado
发明人： Naoki Takada , Yasuyuki Kudo , Takuya Eriguchi , Akihito Akai , Kazuo Okado
IPC分类号： G09G3/36
CPC分类号： G09G3/3688 , G09G2310/027 , G09G2320/0673
摘要： A liquid crystal display is provided with: a tap adjustment register for adjusting a gray scale level to a gray scale voltage in intermediate portions close to the end portions of the gamma characteristic; and a partial-voltage-ratio adjustment register for adjusting a ratio of a gray scale voltage among a plurality of gray scale levels in the intermediate portions close to the end portions of the gamma characteristic, in addition to an amplitude adjustment register for adjusting an amplitude of a gamma characteristic which determines a relation between gray scale levels and gray scale voltages or brightness levels on a display panel; a gradient adjustment register for adjusting a gradient of intermediate portions of the gamma characteristic while fixing end portions of the gamma characteristic; and a fine adjustment register for finely adjusting the intermediate portions of the gamma characteristic for each gray scale level.
摘要翻译： 液晶显示器具有：用于在靠近γ特性的端部的中间部分中将灰度级调整为灰度级电压的抽头调整寄存器; 以及分压比调节寄存器，用于调整靠近伽马特性的端部的中间部分中的多个灰度级之间的灰度电压的比例，以及用于调整幅度的幅度调整寄存器 确定显示面板上的灰度级与灰度级电压或亮度级之间的关系的伽马特性; 梯度调整寄存器，用于调整伽马特性的中间部分的梯度，同时固定伽马特性的端部; 以及精细调整寄存器，用于精细地调整每个灰度级的伽马特性的中间部分。
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公开(公告)号：US20060227628A1
公开(公告)日：2006-10-12
申请号：US11299743
申请日：2005-12-13
申请人： Takuya Eriguchi , Yasuyuki Kudo , Akihito Akai , Naoki Takada , Goro Sakamaki
发明人： Takuya Eriguchi , Yasuyuki Kudo , Akihito Akai , Naoki Takada , Goro Sakamaki
IPC分类号： G11C7/06
CPC分类号： G09G3/20 , G09G3/3688 , G09G2310/0235 , G09G2310/0248 , G09G2310/027 , G09G2310/0297 , G09G2320/0209
摘要： In a display driver, a period D following a period P in one scanning period is divided into periods R, G, and B in which data voltages are applied to data lines R, G, and B, and two output orders of the data voltage such as the period R→the period G→period B and the period B→the period G→period R are switched in each two frames.
摘要翻译： 在显示驱动器中，在一个扫描周期内的周期P之后的周期D被划分成数据电压施加到数据线R，G和B的时段R，G和B，数据电压的两个输出次数 例如在每两帧中切换周期R->周期G->周期B和周期B->周期G->周期R。
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公开(公告)号：US20050052477A1
公开(公告)日：2005-03-10
申请号：US10879047
申请日：2004-06-30
申请人： Yasuyuki Kudo , Akihito Akai , Takuya Eriguchi , Kazuo Okado , Hiroki Aizawa
发明人： Yasuyuki Kudo , Akihito Akai , Takuya Eriguchi , Kazuo Okado , Hiroki Aizawa
CPC分类号： G09G3/2011 , G09G3/2025 , G09G3/3614 , G09G3/3688 , G09G3/3696 , G09G2330/021
摘要： A driving circuit provided by the present invention is characterized in that the driving circuit selects a gray-scale voltage in accordance with high-order bits of display data from a group of gray-scale voltages with their voltage level varying step by step from fractional time period to fractional time period, which are set in advance, and outputs the selected gray-scale voltage during a time period between the start of a scanning period and a time at which a number assigned to a fractional time period matches quantitative information contained in low-order bits of the display data. In addition, the driving circuit provided by the present invention is also characterized in that the time ratio of the first fractional time period is set at a relatively high value while the time ratios of the second and subsequent fractional time periods are each set at a relatively low value.
摘要翻译： 本发明提供的驱动电路的特征在于，驱动电路根据来自一组灰度级电压的显示数据的高位选择灰度电压，其电压电平从分数时间逐步变化 预先设定的时间间隔到分数时间段，并且在扫描周期的开始和分配给分数时间段的时间之间的时间段期间输出所选择的灰度级电压与低包含的定量信息相匹配 显示数据的顺序位。 此外，本发明提供的驱动电路的特征还在于，将第一分数时间段的时间比设定为相对较高的值，同时将第二和后续分数时间段的时间比率设置为相对较高 低价值。
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公开(公告)号：US20050122321A1
公开(公告)日：2005-06-09
申请号：US11006709
申请日：2004-12-08
申请人： Akihito Akai , Yasuyuki Kudo , Takuya Eriguchi , Kazuo Okado
发明人： Akihito Akai , Yasuyuki Kudo , Takuya Eriguchi , Kazuo Okado
CPC分类号： G09G3/3688 , G09G2310/0248 , G09G2310/027 , G09G2320/0209
摘要： A driver for driving a display device, which has signal lines arranged in a first direction, scanning lines arranged in a second direction intersecting with the first direction, and pixels provided to correspond to intersections of the signal lines and the scanning lines, each pixel having a pixel electrode connected to the signal line through a capacitance and a switching element whose first, second, and third terminals are connected respectively to the signal line, the scanning line, and the pixel electrode, comprises: a converter for converting inputted display data to a gray-scale voltage and outputting the gray-scale voltage to the signal lines; and a switching circuit for opening/closing a first electrical coupling provided between the signal line and the converter and a second electrical coupling provided between the signal lines, wherein one scanning period for scanning the scanning lines includes a first period during which the switching circuit closes the first electrical coupling and opens the second electrical coupling, and a second period during which the switching circuit opens the first electrical coupling and closes the second electrical coupling.
摘要翻译： 一种用于驱动显示装置的驱动器，其具有沿第一方向布置的信号线，沿与第一方向相交的第二方向布置的扫描线，以及与信号线和扫描线的交点相对应的像素，每个像素具有 通过电容连接到信号线的像素电极和其第一，第二和第三端子分别连接到信号线，扫描线和像素电极的开关元件，包括：转换器，用于将输入的显示数据转换为 灰度电压并将灰度电压输出到信号线; 以及用于打开/关闭设置在信号线和转换器之间的第一电耦合的开关电路和设置在信号线之间的第二电耦合，其中用于扫描扫描线的一个扫描周期包括开关电路闭合的第一周期 所述第一电耦合并且打开所述第二电耦合;以及第二周期，在所述第二周期期间，所述开关电路打开所述第一电耦合并闭合所述第二电耦合。
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公开(公告)号：US07924252B2
公开(公告)日：2011-04-12
申请号：US11443224
申请日：2006-05-31
申请人： Akihito Akai , Yasuyuki Kudo , Takuya Eriguchi , Kazuo Okado
发明人： Akihito Akai , Yasuyuki Kudo , Takuya Eriguchi , Kazuo Okado
IPC分类号： G09G3/36
CPC分类号： G09G3/3696 , G09G3/20 , G09G3/3614 , G09G3/3688 , G09G2310/0297 , G09G2320/0219 , G09G2320/0276 , G09G2320/0673 , G09G2330/021 , G09G2360/18
摘要： In consideration of the current leakage path of a liquid crystal panel and a signal line voltage fluctuation due to the current leakage path, a γ adjusting function (second driving method) is applied for each divided period in the first driving method. In a signal line driving unit, a gray scale voltage obtained by adding or subtracting a voltage fluctuation value different in each of the output periods of each gray scale is generated, and a gray scale voltage taking the voltage fluctuation value into consideration is applied to a signal line.
摘要翻译： 考虑到液晶面板的电流泄漏路径和由于电流泄漏路径引起的信号线电压波动，在第一驱动方法中，对于每个分割周期应用γ调整功能（第二驱动方法）。 在信号线驱动单元中，生成通过对每个灰度级的每个输出周期不同的电压波动值进行相加或减去而获得的灰度级电压，并且将考虑了电压波动值的灰度级电压应用于 信号线。
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公开(公告)号：US07616221B2
公开(公告)日：2009-11-10
申请号：US10879047
申请日：2004-06-30
申请人： Yasuyuki Kudo , Akihito Akai , Takuya Eriguchi , Kazuo Okado , Hiroki Aizawa
发明人： Yasuyuki Kudo , Akihito Akai , Takuya Eriguchi , Kazuo Okado , Hiroki Aizawa
CPC分类号： G09G3/2011 , G09G3/2025 , G09G3/3614 , G09G3/3688 , G09G3/3696 , G09G2330/021
摘要： A driving circuit provided by the present invention is characterized in that the driving circuit selects a gray-scale voltage in accordance with high-order bits of display data from a group of gray-scale voltages with their voltage level varying step by step from fractional time period to fractional time period, which are set in advance, and outputs the selected gray-scale voltage during a time period between the start of a scanning period and a time at which a number assigned to a fractional time period matches quantitative information contained in low-order bits of the display data. In addition, the driving circuit provided by the present invention is also characterized in that the time ratio of the first fractional time period is set at a relatively high value while the time ratios of the second and subsequent fractional time periods are each set at a relatively low value.
摘要翻译： 本发明提供的驱动电路的特征在于，驱动电路根据来自一组灰度级电压的显示数据的高位选择灰度电压，其电压电平从分数时间逐步变化 预先设定的时间间隔到分数时间段，并且在扫描周期的开始和分配给分数时间段的时间之间的时间段期间输出所选择的灰度级电压与低包含的定量信息相匹配 显示数据的顺序位。 此外，本发明提供的驱动电路的特征还在于，将第一分数时间段的时间比设定为相对较高的值，同时将第二和后续分数时间段的时间比率设置为相对较高 低价值。
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