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    • 5. 发明授权
    • Display device
    • 显示设备
    • US08605077B2
    • 2013-12-10
    • US13382508
    • 2010-04-28
    • Takahiro Senda
    • Takahiro Senda
    • G06F3/038
    • G09G3/3233G09G2300/0417G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0262
    • TFTs 10 and 15 and the organic EL device 17 are provided between a power line Vp and a common cathode Vcom, and a capacitor 16 and a TFT 11 are provided between a gate of the TFT 10 and a data line Sj. A TFT 12 is provided between the gate and a drain of the TFT 10, a TFT 13 is provided between an anode terminal of the organic EL device 17 and the common cathode Vcom, and a TFT 14 is provided between one electrode of the capacitor 16 and the power line Vp. Gates of the TFTs 11 to 13 are connected to a scanning line Gi, and gates of the TFTs 14 and 15 are connected to a scanning line Ei. When writing, a high potential is supplied to the scanning line Gi, and a low potential is supplied to the scanning line Ei a little after this. While the high potentials are supplied to the two scanning lines, the data line Sj is controlled to be in a high impedance state. In this manner, a pixel circuit configured by N-type transistors is driven using two types of scanning lines.
    • TFT10和15以及有机EL器件17设置在电源线Vp和公共阴极Vcom之间,并且电容器16和TFT 11设置在TFT 10的栅极和数据线Sj之间。 TFT12设置在TFT10的栅极和漏极之间,TFT13设置在有机EL器件17的阳极端子和公共阴极Vcom之间,并且TFT 14设置在电容器16的一个电极之间 和电源线Vp。 TFT11至13的栅极连接到扫描线Gi,TFT 14和15的栅极连接到扫描线Ei。 当写入时,高电位被提供给扫描线Gi,并且稍后将稍微的电位提供给扫描线Ei。 当高电位被提供给两条扫描线时,数据线Sj被控制成处于高阻抗状态。 以这种方式,使用两种类型的扫描线驱动由N型晶体管构成的像素电路。
    • 6. 发明授权
    • Current-driven display device
    • 电流驱动显示设备
    • US08344982B2
    • 2013-01-01
    • US12452758
    • 2008-06-23
    • Takahiro Senda
    • Takahiro Senda
    • G09G3/36
    • G09G1/005G09G3/3233G09G2300/0819G09G2300/0842G09G2310/0251G09G2310/061
    • In one embodiment of the present invention, to allow a circuit that compensates for variations in a threshold voltage of a drive element to operate properly and prevent luminances of other pixel circuits from fluctuating due to a compensation operation, a pixel circuit is disclosed. A driving TFT, a switching TFT, and an organic EL element are provided between a power supply wiring line and a common cathode, and a capacitor and a switching TFT are provided between a gate terminal of the driving TFT and a data line. A switching TFT is provided between a connection point B between the capacitor and the switching TFT and a reference supply wiring line, a switching TFT is provided between the gate terminal and a drain terminal of the driving TFT, and a switching TFT is provided between the gate terminal of the driving TFT and the connection point B.
    • 在本发明的一个实施例中,为了允许补偿驱动元件的阈值电压的变化以正常工作并且防止其他像素电路的亮度由于补偿操作而波动的电路,公开了一种像素电路。 驱动TFT,开关TFT和有机EL元件设置在电源布线和公共阴极之间,电容器和开关TFT设置在驱动TFT的栅极端子与数据线之间。 开关TFT设置在电容器和开关TFT之间的连接点B与基准电源布线之间,开关TFT设置在驱动TFT的栅极端子和漏极端子之间,开关TFT设置在 驱动TFT的栅极端子和连接点B.
    • 7. 发明申请
    • DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME
    • 显示装置及其驱动方法
    • US20120120046A1
    • 2012-05-17
    • US13384867
    • 2010-03-17
    • Takahiro Senda
    • Takahiro Senda
    • G09G5/00G09G3/30
    • G09G3/3225G09G3/2022G09G2300/0895G09G2310/0251G09G2310/0262G09G2320/0238
    • An erasing TFT 13 is provided between a gate terminal of a driving TFT 11 and a control line Ei, and a gate terminal of the erasing TFT 13 is connected to the control line Ei. When performing data erase, a potential not lower than a sum of a potential of a power supply line Vp and a threshold voltage of the erasing TFT 13 is applied to the control line Ei before performing data write, and an organic EL element 15 is controlled to be in a non-light-emitting state. A high level potential applied to a control line Wi is a potential at which a writing TFT 12 is maintained in an OFF state when a potential applied to a data line Sj is a high level potential corresponding to the non-light-emitting state. Accordingly, it is possible to prevent electrooptic elements from emitting light unnecessarily along with changes of potentials of the control lines without increasing the number of power supply or wiring.
    • 在驱动TFT11的栅极端子和控制线Ei之间设置擦除TFT13,并且擦除TFT13的栅极端子连接到控制线Ei。 在执行数据擦除时,在执行数据写入之前,将不低于电源线Vp的电位和擦除TFT13的阈值电压之和的电位施加到控制线Ei,并且控制有机EL元件15 处于非发光状态。 施加到控制线Wi的高电平电位是当施加到数据线Sj的电位是对应于非发光状态的高电平电位时,写入TFT 12保持在截止状态的电位。 因此,可以防止电光元件随着控制线的电位变化而不必要地发光,而不增加电源或布线的数量。
    • 8. 发明申请
    • DISPLAY DEVICE
    • 显示设备
    • US20120105427A1
    • 2012-05-03
    • US13382508
    • 2010-04-28
    • Takahiro Senda
    • Takahiro Senda
    • G09G3/30G09G5/00
    • G09G3/3233G09G2300/0417G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0262
    • TFTs 10 and 15 and the organic EL device 17 are provided between a power line Vp and a common cathode Vcom, and a capacitor 16 and a TFT 11 are provided between a gate of the TFT 10 and a data line Sj. A TFT 12 is provided between the gate and a drain of the TFT 10, a TFT 13 is provided between an anode terminal of the organic EL device 17 and the common cathode Vcom, and a TFT 14 is provided between one electrode of the capacitor 16 and the power line Vp. Gates of the TFTs 11 to 13 are connected to a scanning line G1, and gates of the TFTs 14 and 15 are connected to a scanning line Ei. When writing, a high potential is supplied to the scanning line G1, and a low potential is supplied to the scanning line Ei a little after this. While the high potentials are supplied to the two scanning lines, the data line Sj is controlled to be in a high impedance state. In this manner, a pixel circuit configured by N-type transistors is driven using two types of scanning lines.
    • TFT10和15以及有机EL器件17设置在电源线Vp和公共阴极Vcom之间,并且电容器16和TFT 11设置在TFT 10的栅极和数据线Sj之间。 TFT12设置在TFT10的栅极和漏极之间,TFT13设置在有机EL器件17的阳极端子和公共阴极Vcom之间,并且TFT 14设置在电容器16的一个电极之间 和电源线Vp。 TFT11至13的栅极连接到扫描线G1,TFT14和15的栅极连接到扫描线Ei。 当写入时,高电位被提供给扫描线G1,并且稍后将低电位提供给扫描线Ei。 当高电位被提供给两条扫描线时,数据线Sj被控制成处于高阻抗状态。 以这种方式,使用两种类型的扫描线驱动由N型晶体管构成的像素电路。
    • 9. 发明申请
    • ELECTRIC CURRENT DRIVING TYPE DISPLAY DEVICE AND PIXEL CIRCUIT
    • 电流驱动型显示器件和像素电路
    • US20100225623A1
    • 2010-09-09
    • US12294834
    • 2006-12-18
    • Seiji OhhashiTakahiro SendaToshihiro Ohba
    • Seiji OhhashiTakahiro SendaToshihiro Ohba
    • G06F3/038
    • G09G3/3233G09G2300/0814G09G2300/0819G09G2300/0847G09G2300/0852G09G2300/0861G09G2310/0256
    • In a pixel circuit 100, a switching TFT 114, a driving TFT 110, and an organic EL element 130 are provided between a power supply wiring line Vp and a common cathode Vcom and a capacitor 121 and a switching TFT 111 are provided between a gate terminal of the driving TFT 110 and a data line Sj. A switching TFT 112 is provided between a connection point A between the capacitor 121 and the switching TFT 111 and a power supply wiring line Vr, a switching TFT 113 is provided between the gate and drain terminals of the driving TFT 110, and a capacitor 122 is provided between the gate terminal of the driving TFT 110 and the power supply wiring line Vr. Thus, a display device is provided that can freely set a period during which variations in the threshold voltage of a drive element are compensated for, and performs high-quality display by holding a control terminal potential of the drive element during light emission from an electro-optical element.
    • 在像素电路100中,在电源布线Vp和公共阴极Vcom之间设置开关TFT 114,驱动TFT 110和有机EL元件130,并且在栅极之间设置开关TFT111 驱动TFT 110的端子和数据线Sj。 开关TFT 112设置在电容器121和开关TFT 111之间的连接点A和电源布线Vr之间,开关TFT 113设置在驱动TFT 110的栅极和漏极端子之间,电容器122 设置在驱动TFT110的栅极端子和电源布线Vr之间。 因此,提供一种显示装置,其能够自由地设定驱动元件的阈值电压的变化被补偿的期间,并且通过在电子发光期间保持驱动元件的控制端电位来进行高质量的显示 光学元素。
    • 10. 发明申请
    • DRIVING CIRCUIT FOR DISPLAY DEVICE, AND DISPLAY DEVICE
    • 用于显示装置的驱动电路和显示装置
    • US20090153546A1
    • 2009-06-18
    • US12391386
    • 2009-02-24
    • Takahiro SENDAAkira TAGAWA
    • Takahiro SENDAAkira TAGAWA
    • G09G5/00G09G3/20G09G3/30
    • G09G3/3283G09G3/2022G09G2300/0417G09G2310/0251G09G2310/027G09G2320/0266
    • A driving circuit of display device includes digital/current converting (DCC) circuits one for each data line. The DCC circuit operates to charge a capacitor with a reference current according to a supplied signal from a shift register. The DCC circuit stores a current value of the reference current and outputs it to a data line via a switching element that has been turned on by a digital image data signal (H) of a single line supplied from a line latch. The output value of each DCC circuit is reset one after another in every select scan period in which an OFF signal is sent to all the data lines. In this way, the reset of the output value and the output of the image data signal can be successively carried out within one frame period, enabling the data to be applied to the pixel circuit with the DCC circuits provided one for each data line. This simplifies the driving circuit that drives the pixel circuits provided with an electro-optic element and disposed in a matrix.
    • 显示装置的驱动电路包括用于每条数据线的数字/电流转换(DCC)电路。 DCC电路根据来自移位寄存器的提供的信号操作以对参考电流进行充电。 DCC电路存储参考电流的电流值,并通过由线路锁存器提供的单线的数字图像数据信号(H)导通的开关元件将其输出到数据线。 在向所有数据线发送OFF信号的每个选择扫描周期中,每个DCC电路的输出值一个接一个地复位。 以这种方式,可以在一个帧周期内连续执行输出值的复位和图像数据信号的输出,使得能够利用为每个数据线设置的DCC电路将数据应用于像素电路。 这简化了驱动电路,驱动电路设置有电光元件并设置在矩阵中。