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    • 53. 发明授权
    • Logic circuit, timing generation circuit, display device, and portable terminal
    • 逻辑电路,定时生成电路,显示装置和便携式终端
    • US07368945B2
    • 2008-05-06
    • US11441879
    • 2006-05-26
    • Yoshitoshi KidaYoshiharu NakajimaToshikazu Maekawa
    • Yoshitoshi KidaYoshiharu NakajimaToshikazu Maekawa
    • H03K19/173H03K3/037
    • G09G3/20G09G3/3648G09G5/18G09G2300/0408G09G2310/0289G09G2310/08
    • When a buffer is formed by using transistors having large element characteristic variations, the deviation of the timing between the input clock pulse and the reset pulse is likely to occur. When the deviation of the timing becomes larger, a malfunction is caused to occur, and an operation margin becomes smaller with respect to the variations of the element characteristics. In a timing generation circuit, which is formed on an insulating substrate and which has two TFFs (12, 13), for generating a dot clock DCK and a horizontal clock HCK whose frequencies are different in synchronization with a master clock MCK which is input external to the substrate, separate reset pulses drst and hrst are generated at a pulse generation circuit 15 with respect to the two TFFs (12, 13), and a resetting operation is performed at separate timings. Thus, a large operation margin can be ensured even when each circuit is formed by using TFTs having large element characteristic variations and a rough process rule.
    • 当通过使用具有大的元件特性变化的晶体管形成缓冲器时,可能会发生输入时钟脉冲与复位脉冲之间的定时偏差。 当定时的偏差变大时,会发生故障,相对于元件特性的变化,操作余量变小。 在形成在绝缘基板上并具有两个TFF(12,13)的定时产生电路中,用于产生点时钟DCK和频率与输入外部的主时钟MCK同步的频率不同的水平时钟HCK 在相对于两个TFF(12,13)的脉冲发生电路15处产生分离的复位脉冲drst和hrst,并且在单独的定时执行复位操作。 因此,即使当通过使用具有大的元件特性变化的TFT和粗略的处理规则形成每个电路时,也可以确保大的操作余量。
    • 56. 发明授权
    • Power supply voltage converting circuit control method thereof display apparatus and portable terminal
    • 电源电压转换电路的控制方法显示装置和便携式终端
    • US07205989B2
    • 2007-04-17
    • US10182873
    • 2001-12-06
    • Yoshiharu Nakajima
    • Yoshiharu Nakajima
    • G09G5/00
    • G09G3/3696G09G2300/0408G09G2310/04G09G2320/0233G09G2330/02G09G2330/022G09G2340/0428H02M3/07H02M2001/0012H02M2001/0032H02M2003/071Y02B70/16
    • In a power supply voltage converting circuit using a charge pump circuit having a switch device (Nch MOS transistor Qn(12) and Pch MOS transistor Qp(12)) in an output unit, a first clamp circuit (13) diode-clamps a switching pulse voltage (control pulse voltage) for the switch device at the time of starting the power supply voltage converting circuit, and a second clamp circuit (16) clamps the switching pulse voltage at a ground level (negative side circuit power supply potential) on the basis of a clamp pulse obtained by using an output voltage Vout at the time of an end of the starting process. A sufficient driving voltage is thereby provided for the Pch MOS transistor Qp(12) in particular. Thus, a power supply voltage converting circuit that can obtain a high current capacity on a small-area circuit scale, a control method thereof, a display apparatus having the power supply voltage converting circuit as a power supply circuit, and a portable terminal having the display apparatus are provided.
    • 在输出单元中使用具有开关器件(Nch MOS晶体管Qn(12)和Pch MOS晶体管Qp(12))的电荷泵电路的电源电压转换电路中,第一钳位电路(13)二极管钳位开关 在启动电源电压转换电路时用于开关装置的脉冲电压(控制脉冲电压),以及第二钳位电路(16)将开关脉冲电压(负侧电路电源电位)钳位在 在启动过程结束时通过使用输出电压Vout获得的钳位脉冲的基础。 从而为Pch MOS晶体管Qp(12)提供足够的驱动电压。 因此,可以在小面积电路规模上获得高电流容量的电源电压转换电路,其控制方法,具有电源电压转换电路作为电源电路的显示装置,以及具有 提供显示装置。
    • 57. 发明申请
    • Power supply generating circuit, display apparatus, and portable terminal device
    • 电源发生电路,显示装置和便携式终端装置
    • US20070040827A1
    • 2007-02-22
    • US11590169
    • 2006-10-30
    • Noboru ToyozawaYoshiharu Nakajima
    • Noboru ToyozawaYoshiharu Nakajima
    • G09G5/00
    • H02M3/073G09G3/36G09G2330/022H02M3/07
    • A power supply generating circuit, a display apparatus incorporating the same, and a portable terminal device using the display apparatus as an output display unit are provided. In a DC-DC converter having a charge pump circuit (31), a voltage dividing circuit (32), and a regulation circuit (33), p-channel MOS transistors (Qp21, Qp22, Qp31) are turned on/off based on an enable pulse enb to make the voltage dividing circuit (32) and a comparator (41) active only for a period of regulation time and inactive otherwise. This can cause a current to flow in voltage-divider resistors (R1, R2) and the comparator (41) only for a certain period of time required for the regulation operation, thus reducing the power consumption loss caused by a constant current flow in the voltage-divider resistors (R1, R2) and the comparator (41).
    • 提供电源发生电路,其结合的显示装置以及使用该显示装置作为输出显示单元的便携式终端装置。 在具有电荷泵电路(31),分压电路(32)和调节电路(33)的DC-DC转换器中,p沟道MOS晶体管(Qp 21,Qp 22,Qp 31)导通/ 基于使能脉冲enb使得分压电路(32)和比较器(41)仅在调节时间的周期内有效,否则不起作用。 这可能导致电流在分压电阻(R 1,R 2)和比较器(41)中流过调节操作所需的一段时间,从而减少由恒定电流流动引起的功耗损耗 在分压电阻(R 1,R 2)和比较器(41)中。
    • 60. 发明申请
    • Display device
    • 显示设备
    • US20060152460A1
    • 2006-07-13
    • US10542503
    • 2003-12-25
    • Noboru ToyozawaYoshiharu NakajimaHirotoshi Koyama
    • Noboru ToyozawaYoshiharu NakajimaHirotoshi Koyama
    • G09G3/36
    • G09G3/3677G09G3/2011G09G3/3614G09G3/3648G09G3/3655G09G3/3696G09G2300/0876G09G2310/027G09G2310/08G09G2330/02G09G2330/021
    • A display apparatus that can improve power savings in a waiting mode is disclosed. The display apparatus (0) is used as a display component of an electronic device capable of switching between a normal power consumption state and a low power consumption state and includes a panel in which a display area (2) and a peripheral circuit section for driving the display area are integrally formed on an insulating substrate (1). The circuit section can switch between an operation mode and a waiting mode in response to the switching between the normal power consumption state and the low power consumption state of a main body of the electronic device. The circuit section includes standby control means that, in the operation mode, the circuit section operates by receiving a power supply voltage from the main body of the electronic device and drives the display area (2) to show an image. In the waiting mode, while receiving the power supply voltage from the main body of the electronic device, the standby control means stops driving the display area 2 and inactivates the circuit section to suppress power consumption. The standby control means executes a control sequence to shut off direct current components flowing through resistive elements at least included in the circuit section during the inactivation.
    • 公开了一种可以提高等待模式下的节能的显示装置。 显示装置(0)用作能够在正常功耗状态和低功耗状态之间切换的电子设备的显示部件,并且包括其中显示区域(2)和用于驱动的​​外围电路部分 显示区域一体地形成在绝缘基板(1)上。 响应于电子设备的主体的正常功耗状态和低功耗状态之间的切换,电路部分可以在操作模式和等待模式之间切换。 电路部分包括备用控制装置,在操作模式中,电路部分通过从电子设备的主体接收电源电压并驱动显示区域(2)来显示图像来操作。 在等待模式中,待机控制装置在从电子装置主体接收电源电压的同时,停止驱动显示区域2,使电路部分失效以抑制电力消耗。 备用控制装置执行控制顺序,以在停用期间截止至少包括在电路部分中的电阻元件流过的直流分量。