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    • 123. 发明公开
    • SEMICONDUCTOR DEVICE
    • HALBLEITERBAUELEMENT
    • EP1619570A4
    • 2008-01-16
    • EP04726321
    • 2004-04-07
    • SEMICONDUCTOR ENERGY LAB
    • KIMURA HAJIME
    • G05F3/24
    • G09G3/3283G05F3/242G09G3/325G09G2300/0465G09G2300/0842G09G2300/0861G09G2310/0248G09G2320/0233
    • A semiconductor device is disclosed wherein a transistor for supplying an electric current to a load (such as an EL pixel or a signal line) is capable of supplying a correct current without being affected by variations. The voltage at each terminal of the transistor is controlled by using a feedback circuit using an amplifier. The voltage between the gate and the source which is necessary for the transistor to pass a current (Idata) is set by using the feedback circuit by inputting the current (Idata) from a current source circuit to the transistor. The feedback circuit controls so that the transistor operates in the saturation region, and the gate voltage necessary to pass the current (Idata) is set accordingly. By using the transistor so set, a correct current can be supplied to a load (such as an EL pixel or a signal line). In this connection, the necessary gate voltage can be set quickly since an amplifier is used.
    • 公开了一种半导体器件,其中用于向负载(诸如EL像素或信号线)提供电流的晶体管能够提供正确的电流而不受变化的影响。 晶体管各端的电压通过使用放大器的反馈电路来控制。 晶体管通过电流(Idata)所需的栅极和源极之间的电压通过使用反馈电路通过将来自电流源电路的电流(Idata)输入到晶体管来设定。 反馈电路进行控制以使晶体管工作在饱和区,并且相应地设置通过电流(Idata)所需的栅极电压。 通过使用如此设置的晶体管,可以向负载(诸如EL像素或信号线)提供正确的电流。 就此而言,由于使用了放大器,因此可以快速设置所需的栅极电压。
    • 125. 发明公开
    • CONSTANT VOLTAGE GENERATING CIRCUIT
    • KONSTANTSPANNUNGS-ERZEUGUNGSSCHALTUNG
    • EP1798627A1
    • 2007-06-20
    • EP05788196.3
    • 2005-09-29
    • CITIZEN WATCH CO. LTD.
    • HITOMI, Masahiko, CITIZEN WATCH CO., LTD.SHIMOZURU, Masashi, CITIZEN WATCH CO., LTD.
    • G05F3/24H03F3/343
    • H03F3/45475G05F3/242H03F1/305H03F3/345H03F2200/507
    • A constant voltage generating circuit according to the present invention includes a reference voltage generation source 1, a differential amplifier 2 that receives an output voltage (REF1) of the reference voltage generation source 1 at one terminal and receives a potential (VREF2), generated by adding a predetermined potential difference to a regulator voltage (VREG), at another terminal, and switching means 6 that controls the current amount of an output terminal 10 of the reference voltage generation source 1 so that the current amount increases for a fixed period of time immediately after the power is turned on. The switching means 6, which is turned on/off based on VREF2, stabilizes the output voltage (REF1) of the reference voltage generation source 1 quickly after the power is turned on and then stabilizes the regulator voltage (VREG).
    • 根据本发明的恒压发生电路包括参考电压产生源1,差分放大器2,其在一个端子处接收参考电压产生源1的输出电压(REF1)并且接收由(VREF2)产生的电位 在另一个端子处对调节器电压(VREG)增加预定的电位差,以及控制参考电压产生源1的输出端子10的电流量使得电流量增加一定时间的开关装置6 电源打开后立即。 基于VREF2导通/截止的开关装置6在电源接通之后快速稳定基准电压产生源1的输出电压(REF1),然后稳定稳压器电压(VREG)。