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    1.
    发明专利
    未知

    公开(公告)号：DE60224624T2

    公开(公告)日：2008-05-21

    申请号：DE60224624

    申请日：2002-09-10

    Applicant: SEIKO EPSON CORP

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/32 ,  H01L51/50 ,  G09F9/30 ,  G09G3/10 ,  G09G3/20 ,  G09G3/30 ,  G09G5/00 ,  H01L27/32 ,  H01L29/786 ,  H03K17/695 ,  H05B33/14 ,  H05B44/00

    Abstract: The invention seeks to compensate for variations of a driving transistor Tr1. A pixel circuit including a current-type driven element L, a driving transistor Tr1 for controlling the amount of electrical current to be supplied to the driven element, a capacitor element C connected to the gate of the driving transistor, a switching transistor Tr3 connected to the gate of the driving transistor Tr1, a scanning line S connected to the gate of the switching transistor Tr3, a data line D connected to the source or the drain of the switching transistor Tr3, and a power-supply line V connected to a signal line via the switching transistor Tr3, wherein a diode-connected compensating transistor Tr4 is disposed between the power-supply line V and the switching transistor Tr3.

    2.
    发明专利
    未知

    公开(公告)号：DE60228392D1

    公开(公告)日：2008-10-02

    申请号：DE60228392

    申请日：2002-12-11

    Applicant: SEIKO EPSON CORP

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/32 ,  H01L51/50 ,  G09F9/30 ,  G09G3/20 ,  G09G3/22 ,  G09G3/30 ,  H01L27/32 ,  H05B44/00

    Abstract: An electronic device includes a scanning line (Y 1 -Y N ), a data line (X 1 -X N , U1, U2), a current generating circuit (412) for generating a current signal (lout) that is output to the data line, and an electronic circuit. The electronic circuit includes a diode (220), a driving transistor (214) for controlling a current level of a driving current that is supplied to the diode, a holding capacitor (230) that is connected to a gate of the driving transistor and maintains a charge in accordance with a signal level of the current signal, a first transistor (252) that is connected between the holding capacitor and the data line and controls an electrical connection between the holding capacitor and the data line, and a second transistor (213). The device is configured so that a voltage signal (Vout) is output to the data line; the voltage signal is supplied to the holding capacitor (230) through the first transistor (252) during a first period that starts when the voltage signal (Vout) begins to be output to the data line; the current signal (lout) is supplied to the electronic circuit through a third transistor (211) during a second period; the driving current is supplied to the diode (220) through the driving transistor (214) and the second transistor (213) during a third period, and the first period starts when the second transistor (213) is in an off-state.

    3.
    发明专利
    未知

    公开(公告)号：DE60224624D1

    公开(公告)日：2008-03-06

    申请号：DE60224624

    申请日：2002-09-10

    Applicant: SEIKO EPSON CORP

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/32 ,  H01L51/50 ,  G09F9/30 ,  G09G3/10 ,  G09G3/20 ,  G09G3/30 ,  G09G5/00 ,  H01L27/32 ,  H01L29/786 ,  H03K17/695 ,  H05B33/14 ,  H05B44/00

    Abstract: The invention seeks to compensate for variations of a driving transistor Tr1. A pixel circuit including a current-type driven element L, a driving transistor Tr1 for controlling the amount of electrical current to be supplied to the driven element, a capacitor element C connected to the gate of the driving transistor, a switching transistor Tr3 connected to the gate of the driving transistor Tr1, a scanning line S connected to the gate of the switching transistor Tr3, a data line D connected to the source or the drain of the switching transistor Tr3, and a power-supply line V connected to a signal line via the switching transistor Tr3, wherein a diode-connected compensating transistor Tr4 is disposed between the power-supply line V and the switching transistor Tr3.

    Driving method for electrooptical device
    5.
    发明专利
    Driving method for electrooptical device 审中-公开
    电动装置的驱动方法

    公开(公告)号：JP2011002845A

    公开(公告)日：2011-01-06

    申请号：JP2010184787

    申请日：2010-08-20

    Applicant: Seiko Epson Corp ,  セイコーエプソン株式会社

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/30 ,  G09G3/20

    Abstract: PROBLEM TO BE SOLVED: To enhance the flexibility of operational design, by conducting Vth compensation and reverse bias application with an operation process.SOLUTION: By connecting the gate of a drive transistor T3 and one of own terminals and applying a non-forward bias to the drive transistor T3, the voltage of a node N1, connected to the gate of the drive transistor T3 is set to an offset level, corresponding to the Vth of the drive transistor. Then, by applying data voltage Vdata to a data line X which is coupled in capacitance to the node N1, data writing is conducted to capacitors C1 and C2 connected to the node N1 using the offset level as a reference. Then, by applying a forward bias to the drive transistor T3, a drive current Ioled is generated, and luminance of an organic EL element OLED is set by the drive current.

    Abstract translation: 要解决的问题：为了提高操作设计的灵活性，通过使用操作过程进行Vth补偿和反向偏置应用。解决方案：通过连接驱动晶体管T3的栅极和自己的端子之一并施加非正向偏置 连接到驱动晶体管T3的栅极的驱动晶体管T3的节点N1的电压被设定为对应于驱动晶体管的Vth的偏移电平。 然后，通过将数据电压Vdata应用于与节点N1电容耦合的数据线X，以偏移电平为参考，对连接到节点N1的电容器C1和C2进行数据写入。 然后，通过向驱动晶体管T3施加正向偏压，产生驱动电流Ioled，并且通过驱动电流来设置有机EL元件OLED的亮度。

    Electro-optical apparatus, method of driving the same, and electronic device
    6.
    发明专利
    Electro-optical apparatus, method of driving the same, and electronic device 审中-公开
    电光装置，其驱动方法和电子装置

    公开(公告)号：JP2010181903A

    公开(公告)日：2010-08-19

    申请号：JP2010063676

    申请日：2010-03-19

    Applicant: Seiko Epson Corp ,  セイコーエプソン株式会社

    Inventor： MIYAZAWA TAKASHI ,  OZAWA NORIO

    IPC: G09G3/30 ,  G09G3/20 ,  H01L51/50

    Abstract: PROBLEM TO BE SOLVED: To provide an electro-optical apparatus in which the life of an electro-optical element can be prolonged by applying a non-forward bias to the electro-optical element, and to provide a method of driving the electro-optical apparatus and an electronic device. SOLUTION: A pixel circuit 20 is provided so as to correspond to an intersection of a scanning line Y1 and a data line X1. The pixel circuit 20 includes an organic EL element 21, a driving transistor Q20, switching transistors Q21 to Q24, a program transistor Q25, and a retention capacity C1. In the pixel circuit 20, the switching transistor Q24 is turned on when the organic EL element 21 does not emit light, and a pixel electrode of the organic EL element 21 is electrically connected to a scanning line Y2 of a trailing stage to apply a reverse bias to the organic EL element 21. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 解决的问题：提供一种通过向电光元件施加非正向偏压来延长电光元件的寿命的电光设备，并且提供一种驱动电光元件的方法 电光装置和电子装置。 解决方案：像素电路20被设置为对应于扫描线Y1和数据线X1的交点。 像素电路20包括有机EL元件21，驱动晶体管Q20，开关晶体管Q21〜Q24，编程晶体管Q25和保持容量C1。 在像素电路20中，当有机EL元件21不发光时，开关晶体管Q24导通，有机EL元件21的像素电极与后级的扫描线Y2电连接， 偏向有机EL元件21.版权所有（C）2010，JPO＆INPIT

    Electro-optical device and electronic equipment
    7.
    发明专利
    Electro-optical device and electronic equipment 审中-公开
    电光设备和电子设备

    公开(公告)号：JP2010122700A

    公开(公告)日：2010-06-03

    申请号：JP2010000981

    申请日：2010-01-06

    Applicant: Seiko Epson Corp ,  セイコーエプソン株式会社

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/30 ,  G09G3/20 ,  H01L51/50

    Abstract: PROBLEM TO BE SOLVED: To compensate a dispersion of a driving transistor Tr1. SOLUTION: A pixel circuit 200 is arranged corresponding to crossing of a data line Xm and a scanning line Yn with electric wires, and the pixel circuit 200 includes an element L to be driven, and the driving transistor Tr1 for controlling a current amount supplied thereto. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：补偿驱动晶体管Tr1的色散。 解决方案：对应于数据线Xm和扫描线Yn与电线的交叉对应地设置像素电路200，像素电路200包括要驱动的元件L和用于控制电流的驱动晶体管Tr1 供应量。 版权所有（C）2010，JPO＆INPIT

    Electronic circuit, drive method thereof, electronic device and electronic apparatus
    9.
    发明专利
    Electronic circuit, drive method thereof, electronic device and electronic apparatus 有权
    电子电路，其驱动方法，电子设备和电子设备

    公开(公告)号：JP2007334178A

    公开(公告)日：2007-12-27

    申请号：JP2006168397

    申请日：2006-06-19

    Applicant: Seiko Epson Corp ,  セイコーエプソン株式会社

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/30 ,  G09G3/20 ,  H01L51/50

    CPC classification number: G09G3/3233 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0847 ,  G09G2300/0861

    Abstract: PROBLEM TO BE SOLVED: To surely compensate a threshold voltage and write a data voltage in a drive transistor. SOLUTION: A compensation period overlaps with a data-write period. During the period of both periods overlapping each other, a transistor Tr1 goes to off state, so that a capacitive element Ca is charged to a threshold voltage and, at the same time, a capacitive element Cb is charged with a data voltage. During a drive period, the transistor Tr1 goes to off-state, so that the capacitive element Ca is serially connected with the capacitive element Cb. As a result, the voltage obtained by adding a threshold voltage and data voltage will be applied between the gate and the source of the drive transistor Tdrp. Consequently, a driving current Iel which is compensated for the threshold voltage is supplied to an electro-optical element E. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：确保补偿阈值电压并写入驱动晶体管中的数据电压。

    解决方案：补偿周期与数据写入周期重叠。 在两个周期彼此重叠的周期期间，晶体管Tr1变为截止状态，使得电容元件Ca被充电到阈值电压，并且同时电容元件Cb被充满数据电压。 在驱动周期期间，晶体管Tr1进入截止状态，使得电容元件Ca与电容元件Cb串联连接。 结果，在驱动晶体管Tdrp的栅极和源极之间施加通过添加阈值电压和数据电压而获得的电压。 因此，补偿阈值电压的驱动电流Iel被提供给电光元件E.版权所有（C）2008，JPO＆INPIT

    Electronic circuit, electro-optical device, electronic apparatus, and electronic device
    10.
    发明专利
    Electronic circuit, electro-optical device, electronic apparatus, and electronic device 审中-公开
    电子电路，电光设备，电子设备和电子设备

    公开(公告)号：JP2007264647A

    公开(公告)日：2007-10-11

    申请号：JP2007128426

    申请日：2007-05-14

    Applicant: Seiko Epson Corp ,  セイコーエプソン株式会社

    Inventor： MIYAZAWA TAKASHI

    IPC: G09G3/30 ,  G09G3/20 ,  H01L51/50

    Abstract: PROBLEM TO BE SOLVED: To resolve write delay of data in a low gradation level. SOLUTION: A pixel circuit 10 includes; a driving transistor Tr5 which supplies a driving current to an organic EL element 12 connected to a current output terminal; a holding capacitor Cr which applies a prescribed voltage corresponding accumulated charges to a current control terminal of the driving transistor Tr5; and a capacitive element Cs which transmits a voltage change supplied from a variable voltage source V dd to the current control terminal through a capacitive coupling. The holding capacity Cr drives the driving transistor Tr5 by applying the prescribed voltage corresponding accumulated charges to the current control terminal and prompts supply of the driving current to the organic EL element 12 for a light emission period of which the time length is preliminarily determined correspondingly to gradation display, and the capacitive element Cs stops supply of the driving current to the organic EL element 12 by applying the voltage change outputted from the variable power source V dd to the current control terminal through the capacitive coupling after the light emission period. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：解决低灰度级数据的写入延迟。 像素电路10包括： 驱动晶体管Tr5，其向连接到电流输出端子的有机EL元件12提供驱动电流; 保持电容器Cr，其将对应的累积电荷的规定电压施加到驱动晶体管Tr5的电流控制端子; 以及通过电容耦合向电流控制端子发送从可变电压源V

    提供的电压变化的电容元件Cs。 保持容量Cr通过向电流控制端子施加相应的累积电荷的规定电压来驱动驱动晶体管Tr5，并且对与有机EL元件12的驱动电流进行预先确定的发光时段相对应地提供驱动电流 电容元件Cs通过在电流控制端子之间通过电容耦合施加从可变电源V
    输出的电压变化来停止对有机EL元件12的驱动电流的供给。 发光期。 版权所有（C）2008，JPO＆INPIT

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