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    • 84. 发明授权
    • Two-way shift register and image display device using the same
    • 双向移位寄存器和图像显示装置使用相同
    • US07365727B2
    • 2008-04-29
    • US10788161
    • 2004-02-25
    • Masakazu SatohYasushi KubotaHajime WashioKazuhiro MaedaMichael James BrownlowGraham Andrew Cairns
    • Masakazu SatohYasushi KubotaHajime WashioKazuhiro MaedaMichael James BrownlowGraham Andrew Cairns
    • G09G3/36
    • G11C19/00G09G3/3674G09G3/3685G09G2310/0283G09G2310/0289G09G2330/021G11C19/28
    • A shift register is provided with a shift register section composed of a plurality of stages of flip-flops that operate in synchronization with a clock signal, and level shifters for boosting a start signal lower than a driving voltage and for applying the same to both ends of the shift register section, and the shift register is capable of switching the shift direction in accordance with the switching signal. The foregoing level shifters are current-driving-type level shifters that can operate even in the case where the transistor characteristics are inferior or in the case of fast operations, and that can carry out level shifting even with a start signal having a small amplitude. Furthermore, the foregoing level shifters are provided at both ends of the shift register section, respectively, and one of the same stops operating in accordance with a switching signal, so that consumed power should decrease. Consequently, there can be provided a shift register that is capable of shifting in two directions, that can normally operate even with an input signal having a small amplitude, and that therefore consumes less electric power.
    • 移位寄存器具有移位寄存器部分,该移位寄存器部分由与时钟信号同步操作的多级触发器组成;以及电平移位器,用于升压低于驱动电压的启动信号,并将其施加到两端 的移位寄存器,并且移位寄存器能够根据切换信号切换移位方向。 上述电平移位器是电流驱动型电平移位器,即使在晶体管特性较差的情况下或者在快速操作的情况下也能够工作,并且即使利用具有小振幅的启动信号也能进行电平移位。 此外,上述电平移位器分别设置在移位寄存器部分的两端,并且其中一个电平移位器根据切换信号停止工作,从而消耗的功率应该减小。 因此,可以提供能够在两个方向上移位的移位寄存器,即使在具有小幅度的输入信号的情况下也能正常地进行操作,因此消耗较少的电力。
    • 88. 发明申请
    • Level shift circuit
    • 电平移位电路
    • US20050248381A1
    • 2005-11-10
    • US11103893
    • 2005-04-12
    • Yasushi KubotaMasahiro SatoHiroshi Watanabe
    • Yasushi KubotaMasahiro SatoHiroshi Watanabe
    • H03K19/0185H03K3/356H03K17/22H03L5/00
    • H03K3/356113H03K17/223
    • The circuit is to provide a type of level shift circuit that operates correctly even when the input timings of voltages from multiple power sources are different. :evel shift circuit 10 that outputs the output signal of the high voltage source as a response to the input signal of the low voltage source has the following attribute: When feeding of the low voltage source is delayed with respect to feeding of the high voltage source, on the basis of the high voltage source, power-on-reset circuit 20 generates power-on-reset signal PWR. During the period before the input signal of the low voltage source is fed as a response to power-on-reset PWR, latch circuit 30 initializes the level shift circuit, and holds its output OUT at the low level.
    • 电路是提供一种类型的电平移位电路,即使当来自多个电源的电压的输入定时不同时也能正常工作。 :作为对低电压源的输入信号的响应而输出高电压源的输出信号的电平移位电路10具有以下特性:当低电压源的馈电相对于高电压源的馈送而被延迟时 基于高电压源,上电复位电路20产生上电复位信号PWR。 在将低电压源的输入信号作为对上电复位PWR的响应进给之前的期间,锁存电路30初始化电平移位电路,并将其输出OUT保持在低电平。
    • 89. 发明授权
    • Drive circuit
    • 驱动电路
    • US06791526B2
    • 2004-09-14
    • US10097784
    • 2002-03-13
    • Yasushi KubotaTatsumi Satoh
    • Yasushi KubotaTatsumi Satoh
    • G09G336
    • G09G3/3685G09G2300/0408G09G2300/08G09G2310/0275G09G2310/0297G09G2310/06
    • A drive circuit, for example a gate line drive circuit for a TFT liquid-crystal display, having a circuit size smaller than in the past. A TFT drive circuit has the shifting direction of drive data sequentially shifted through shift registers (SR116-R60) and is further inverted by a control signal (SEL_SFT), and the data are shifted in the opposite direction, from the first shift register (SR61) to the second shift register (SR116). At this time, the upper group of switching circuits (SW1-SW56) or the lower group of switching circuits (SW116-SW61) is enabled and the other group is disabled by control signals (SEL_UP, SEL_LO). Once the drive data are shifted to the bits of the shift registers, a voltage selection signal generated by a decoder (DEn) is inputted to an output circuit via an effective switching circuit, and a drive signal for a TFT gate is outputted. The number of circuits is reduced because the shift registers (SR61-SR116) and decoders (DE61-DE116) are shared by two outputs.
    • 驱动电路,例如TFT液晶显示器的栅极线驱动电路,其电路尺寸比以往小。 TFT驱动电路具有通过移位寄存器(SR116-R60)顺序移位的驱动数据的移位方向,并且由控制信号(SEL_SFT)进一步反转,并且数据沿相反方向从第一移位寄存器(SR61 )到第二移位寄存器(SR116)。 此时,开关电路(SW1-SW56)或下组开关电路(SW116-SW61)被使能,另一组被控制信号(SEL_UP,SEL_LO)禁止。 一旦驱动数据被移位到移位寄存器的位,由解码器(DEn)产生的电压选择信号通过有效的开关电路被输入到输出电路,并且输出用于TFT栅极的驱动信号。 由于移位寄存器(SR61-SR116)和解码器(DE61-DE116)由两个输出共享,所以电路数量减少。