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    Display device having driving circuitry with driving gate lines
    1.
    发明授权
    Display device having driving circuitry with driving gate lines 有权

    公开(公告)号：US10679578B2

    公开(公告)日：2020-06-09

    申请号：US16147414

    申请日：2018-09-28

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Kohhei Tanaka ,  Kaoru Yamamoto ,  Tokihiro Yokono

    IPC分类号： G09G3/36 ,  G06F3/041 ,  G06F3/044

    摘要： The display device includes drive circuits 301 provided in correspondence to the gate lines, respectively, and alternately switches a scanning period for scanning the gate lines and a non-scanning period during one vertical scanning period. The drive circuit 301 includes netA(n), an output switching element M5 connected to netA(n), and a reset circuit R. The output switching element M5 applies a selection voltage to the gate line GLn. The potential of netA(n) changes between a first potential that is equal to or higher than a threshold voltage of the output switching element M5, and a second potential that is lower than the first potential. In the drive circuit 301 wherein a period while netA(n) thereof has the second potential overlaps with the non-scanning period, the reset circuit R resets the potential of netA(n) to the second potential, before the resumption of the scanning period after the non-scanning period.

    Display device
    4.
    发明授权
    Display device 有权

    公开(公告)号：US11900872B2

    公开(公告)日：2024-02-13

    申请号：US17437812

    申请日：2019-03-29

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Kaoru Yamamoto ,  Ryo Yonebayashi

    IPC分类号： G09G3/3233 ,  G09G3/3266

    CPC分类号： G09G3/3233 ,  G09G3/3266 ,  G09G2310/0286 ,  G09G2310/08

    摘要： To make a frame size of a display device having an external compensation function smaller than those of the known display devices.
    Each of a plurality of unit circuits configuring a gate driver includes a first output control transistor including a second conduction terminal connected to a first output terminal-connected to another unit circuit and a control terminal connected to a first internal node, a second output control transistor including a second conduction terminal connected to a second output terminal configured to output an on level signal for at least a part of a monitoring period and a control terminal connected to a second internal node, and an output circuit control transistor including a first conduction terminal connected to the first internal node and a second conduction terminal connected to the second internal node. A potential to be applied to a control terminal of the output circuit control transistor is switched between a potential of a high level and a potential of a low level.

    Display device and method for driving same
    5.
    发明授权
    Display device and method for driving same 有权

    公开(公告)号：US11741897B2

    公开(公告)日：2023-08-29

    申请号：US17603531

    申请日：2019-05-14

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Kaoru Yamamoto

    IPC分类号： G09G3/32 ,  G09G3/3233

    CPC分类号： G09G3/3233 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2320/0214 ,  G09G2320/0295 ,  G09G2320/043

    摘要： With regard to a display device having an external compensation function, the occurrence of operational failure caused by off-leakage at a transistor is suppressed. A unit circuit configuring a gate driver is provided with a stabilization transistor including a control terminal, a first conduction terminal connected to a first internal node, and a second conduction terminal connected to a first control signal line, a stabilization circuit-configured to control a potential of the control terminal of the stabilization transistor-based on a potential of the first internal node, a first reset transistor including a control terminal, a first conduction terminal connected to a second output terminal, and a second conduction terminal connected to a first reference potential line, and a reset circuit configured to control a potential of the control terminal of the first reset transistor based on the potential of the first internal node.

    Unit shift register circuit, shift register circuit, control method for unit shift register circuit, and display device
    6.
    发明授权
    Unit shift register circuit, shift register circuit, control method for unit shift register circuit, and display device 有权

    公开(公告)号：US10276122B2

    公开(公告)日：2019-04-30

    申请号：US15522425

    申请日：2015-10-23

    申请人： Sharp Kabushiki Kaisha

    发明人： Kaoru Yamamoto ,  Yasuyuki Ogawa

    IPC分类号： G11C19/00 ,  G09G3/36 ,  G11C19/28

    摘要： In a forward shift operation, a second input signal having a higher voltage than a voltage of a first input signal is input to a second gate terminal in a case that a first gate terminal of a first transistor is charged, and a fourth input signal having a higher voltage than a voltage of a third input signal is input to a third gate terminal in a case that the first gate terminal of the first transistor is discharged. In a backward shift operation, the fourth input signal having a higher voltage than a voltage of the third input signal is input to the third gate terminal in a case that the first gate terminal of the first transistor is charged, and the second input signal having a higher voltage than a voltage of the first input signal is input to the second gate terminal in a case that the first gate terminal of the first transistor is discharged.

    Display device with compensating backlight drive circuit and method for driving same
    9.
    发明授权
    Display device with compensating backlight drive circuit and method for driving same 有权
    具有补偿背光驱动电路的显示装置及其驱动方法

    公开(公告)号：US09520097B2

    公开(公告)日：2016-12-13

    申请号：US14351613

    申请日：2012-10-31

    申请人： Sharp Kabushiki Kaisha

    发明人： Yutaka Takamaru ,  Seiji Kaneko ,  Yasuyuki Ogawa ,  Kaoru Yamamoto ,  Kohhei Tanaka ,  Seiichi Uchida ,  Noriaki Yamaguchi ,  Shigeyasu Mori

    IPC分类号： G09G3/36 ,  G09G3/34

    CPC分类号： G09G3/3648 ,  G09G3/3406 ,  G09G3/3614 ,  G09G2310/0237 ,  G09G2320/0247 ,  G09G2320/0626 ,  G09G2360/16

    摘要： In a display control circuit (200) of a display device, an image pattern detection portion (230) detects whether an image is an anti-flicker pattern or not, and when it is an anti-flicker pattern, a backlight source is driven (typically, such that its luminance changes in the opposite phase relative to luminance changes that would occur), on the basis of predicted values, which are predetermined so as to compensate for the luminance changes that would occur. Moreover, the backlight is not turned on during the scanning period. As a result, flicker due to current leakage, etc., can be reduced or eliminated in a display device for which a scanning period and a scan stop period are set.

    摘要翻译： 在显示装置的显示控制电路（200）中，图像图案检测部（230）检测图像是否为防闪烁图案，并且当其为防闪烁图案时，驱动背光源（ 通常，使得其亮度相对于将发生的亮度变化在相反相位变化），基于预定值，预测值来补偿将发生的亮度变化。 此外，在扫描期间背光源未被接通。 结果，在设置了扫描期间和扫描停止期间的显示装置中，可以减少或消除由于电流泄漏等引起的闪烁。

    Display device and method for driving same
    10.
    发明授权
    Display device and method for driving same 有权

    公开(公告)号：US11996044B2

    公开(公告)日：2024-05-28

    申请号：US18029897

    申请日：2020-10-01

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Kaoru Yamamoto ,  Kohhei Tanaka ,  Ryo Yonebayashi

    IPC分类号： G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

    CPC分类号： G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2320/0247 ,  G09G2330/021

    摘要： A display device includes a display control circuit configured to control a data-side drive circuit and a scanning-side drive circuit such that a drive period and a pause period alternate between one another. The display control circuit, in the pause period, such that voltage of corresponding data signal line is applied to first conduction terminal of drive transistor as bias voltage when light emission control transistor is in an off state and current corresponding to holding voltage of holding capacitor flows through display element when light emission control transistor is in an on state, causes the data-side drive circuit to output the bias voltage and apply the bias voltage to data signal lines and causes the scanning-side drive circuit to stop driving first scanning signal lines and selectively drive second scanning signal lines and selectively make light emission control lines inactive.