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    • 81. 发明申请
    • LIQUID CRYSTAL DISPLAY DRIVE CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示驱动电路和液晶显示器件
    • US20110205203A1
    • 2011-08-25
    • US12998481
    • 2009-10-28
    • Toru KuriyamaHisashi YamaguchiHiromasa Asada
    • Toru KuriyamaHisashi YamaguchiHiromasa Asada
    • G09G3/36G06F3/038
    • G09G3/3629G09G2300/0486G09G2310/02G09G2310/061G09G2310/062G09G2320/0233
    • In order to carry out a display reset operation, a segment driver and a common driver are driven to operate as below during a display data reading period in which voltages to be applied to a liquid crystal display panel are nonuniform between lines. First, a shift register and a level shifter which are provided in the segment driver and a shift register and a level shifter which are provided in the common driver are driven to operate as usual, whereas a display control signal supplied from a controller causes output circuits to stop carrying out their respective output operations. In at least one embodiment, during a period in which a writing operation is carried out with respect to the liquid crystal display panel so as to carry out the display reset operation, the display control signal supplied from the controller allows the output circuits to carry out the respective output operations. This allows a memory (e.g., cholesteric) liquid crystal display device to carry out a display reset operation without causing display unevenness by simultaneously selecting a plurality of lines.
    • 为了执行显示复位操作,在施加到液晶显示面板的电压在线之间不均匀的显示数据读取周期期间,段驱动器和公共驱动器被驱动以如下操作。 首先,设置在段驱动器中的移位寄存器和电平移位器以及设置在公共驱动器中的移位寄存器和电平移位器被驱动以照常操作,而从控制器提供的显示控制信号使输出电路 停止执行各自的产出业务。 在至少一个实施例中,在相对于液晶显示面板执行写入操作以执行显示复位操作的时段期间,从控制器提供的显示控制信号允许输出电路执行 各自的输出操作。 这允许存储器(例如胆甾型)液晶显示装置通过同时选择多条线来执行显示复位操作而不引起显示不均匀。
    • 83. 发明授权
    • Active matrix type display device
    • 主动矩阵型显示装置
    • US07796102B2
    • 2010-09-14
    • US11587905
    • 2004-04-30
    • Atsuo IshizukaHisashi YamaguchiYasunobu Hashimoto
    • Atsuo IshizukaHisashi YamaguchiYasunobu Hashimoto
    • G09G3/32
    • G09G3/325G09G2300/0842G09G2300/0861G09G2310/0251G09G2320/0233
    • The display device of the invention comprises a plurality of scanning lines (Wscan and Escan) which are selected successively, a plurality of data lines (Data) to which the writing electric current (Idata) in accordance with brightness information is supplied according to the scanning line selection, and a plurality of pixels (PX) arranged at intersecting points between the scanning lines and the data lines. Each of the pixels comprises a light emitting element (OLED), a driving transistor (TFT4), a capacitor (C) connected to the gate (Nd) of the driving transistor for accumulating writing data, a first transistor (TFT1) which is turned on during writing period in which the scanning lines are scanned and which connects the data lines and the drain of the driving transistor, and a second transistor (TFT2) which is turned on during the writing period and which short-circuits the gate and drain of the driving transistor. With such a structure, the light emitting element can be driven with a driving electric current equivalent to the writing electric current, irrespective of variations in characteristics of the transistors.
    • 本发明的显示装置包括连续选择的多条扫描线(Wscan和Escan),根据扫描提供根据亮度信息提供写入电流(Idata)的多条数据线(Data) 线选择,以及布置在扫描线和数据线之间的交叉点处的多个像素(PX)。 每个像素包括发光元件(OLED),驱动晶体管(TFT4),连接到用于积累写入数据的驱动晶体管的栅极(Nd))的电容器(C),转动的第一晶体管(TFT1) 扫描线被扫描并连接驱动晶体管的数据线和漏极的写入周期期间导通,以及在写入周期期间导通的第二晶体管(TFT2),并且使栅极和漏极短路 驱动晶体管。 利用这种结构,不管晶体管的特性的变化如何,都可以用等于写入电流的驱动电流来驱动发光元件。
    • 85. 发明申请
    • DISPLAY DEVICE DRIVING METHOD AND DISPLAY DEVICE
    • 显示设备驱动方法和显示设备
    • US20100020055A1
    • 2010-01-28
    • US12572742
    • 2009-10-02
    • Masaki NoseHisashi Yamaguchi
    • Masaki NoseHisashi Yamaguchi
    • G09G3/36G09G5/00
    • G09G3/3622G02F1/13476G09G3/2011G09G3/2014G09G3/2018G09G3/3614G09G3/3618G09G3/3651G09G3/3692G09G2300/026G09G2320/0204G09G2330/021G09G2340/16G09G2380/02
    • A display device includes a liquid crystal display panel having a first and second substrates with scanning electrodes and data electrodes and a liquid crystal layer; a scanning electrode driving circuit applying to the scanning electrodes scan pulse; a data electrode driving circuit applying to the data electrodes data pulses having combinations of different voltage levels according to write data; and a driving control circuit supplying to the scanning and data electrode driving circuits a pulse control signal controlling the phase of the scan pulses and data pulses. The scanning and data electrode driving circuits control the scan pulses and data pulses at voltage levels according to the pulse control signal, and the driving control circuit inverts or does not invert the phase of the pulse control signal, at each application interval of the scan pulses, according to the number of changed values and unchanged values of the write data.
    • 一种显示装置,包括:液晶显示面板,具有具有扫描电极和数据电极以及液晶层的第一和第二基板; 扫描电极驱动电路,对扫描电极施加扫描脉冲; 数据电极驱动电路,根据写入数据向数据电极施加具有不同电压电平的组合的数据脉冲; 以及向扫描和数据电极驱动电路提供控制扫描脉冲和数据脉冲的相位的脉冲控制信号的驱动控制电路。 扫描和数据电极驱动电路根据脉冲控制信号控制电压电平下的扫描脉冲和数据脉冲,并且驱动控制电路在扫描脉冲的每个施加间隔反相或不反相脉冲控制信号的相位 ,根据变化的数值和不变的数据写入数据。
    • 88. 发明授权
    • Apparatus and method to improve quality of moving image displayed on liquid crystal display device
    • 提高在液晶显示装置上显示的运动图像质量的装置和方法
    • US07133015B1
    • 2006-11-07
    • US09651288
    • 2000-08-30
    • Hidefumi YoshidaMakoto OhashiHisashi Yamaguchi
    • Hidefumi YoshidaMakoto OhashiHisashi Yamaguchi
    • G09G3/36
    • G09G3/3648G09G3/342G09G3/3666G09G2310/024G09G2310/04G09G2310/062G09G2310/063G09G2320/0233G09G2320/0238G09G2320/0247G09G2320/0261G09G2330/021
    • A liquid crystal display device comprises a panel having pixel electrodes arranged at intersections of a plurality of signal lines via switching elements for transmitting display data and a plurality of scanning lines for transmitting control signals, and a control circuit for controlling the panel. The liquid crystal panel is divided into first pixel regions and second pixel regions adjacent to the first pixel regions. The control circuit carries out impulse driving in which the control signals transmitted to each of the scanning lines are activated two times in one frame period for displaying an image. The control circuit writes the display data in either one of the pixel regions and writes reset data in the other pixel regions when the control signals are activated once of the two times. By writing the reset data in the pixel regions, the display data written in an immediately preceding frame are reset. In consecutive frames, the display data written in the pixel regions are always reset in one frame period. Therefore, blurring in a moving image can be alleviated. Since writing the display data and the reset data is carried out separately in the first pixel regions and in the second pixel regions, flicker is prevented from occurring in a display screen.
    • 一种液晶显示装置,包括具有通过用于发送显示数据的开关元件和用于发送控制信号的多条扫描线而布置在多条信号线的交点处的像素电极的面板和用于控制面板的控制电路。 液晶面板被划分为与第一像素区域相邻的第一像素区域和第二像素区域。 控制电路进行脉冲驱动,其中发送到每个扫描线的控制信号在一个帧周期中被激活两次以显示图像。 控制电路将显示数据写入任一个像素区域,并且当控制信号两次激活一次时,将复位数据写入其他像素区域。 通过在像素区域中写入复位数据,写入前一帧的显示数据被复位。 在连续帧中,写入像素区域的显示数据总是在一个帧周期内重置。 因此,可以减轻运动图像中的模糊。 由于在第一像素区域和第二像素区域中单独执行写入显示数据和复位数据,因此防止在显示屏幕中发生闪烁。