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    • 2. 发明申请
    • BEAM CURRENT MEASUREMENT
    • 光束电流测量
    • WO2004028145A1
    • 2004-04-01
    • PCT/IB2003/003623
    • 2003-08-08
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.CORTENRAAD, Hubertus, M., R.VAN DEN BIGGELAAR, Peter
    • CORTENRAAD, Hubertus, M., R.VAN DEN BIGGELAAR, Peter
    • H04N5/14
    • G09G1/002H04N5/141H04N5/68H04N9/645
    • The display apparatus comprises a picture tube (CRT) with an electron gun which generates an electron beam (EB) directed towards a display screen. The electron gun comprises a first and a second electrode (CA, G1). The electron beam (EB) originates from the first electrode (CA). The voltage between the first electrode (CA) and the second electrode (G1) controls the intensity of the electron beam (EB). A beam current (IB) flows in the first electrode (CA) in response to the electron beam (EB). A total current (ICA) in the first electrode (CA) is the sum of the beam current (IB) and a current (IC) flowing through a capacitance (CIN) between the first and the second electrode (CA, G1). A compensation circuit (COM) supplies a compensation current (ICO) to the first electrode (CA) to compensate for a capacitive current (IC) through a capacitance (CIN) between the first and the second electrode (CA, G1). A beam current measurement circuit (BMC) measures the total current (IT) which is the sum of the total current in the first electrode (ICA) and the compensation current (ICO).
    • 显示装置包括具有电子枪的显像管(CRT),该电子枪产生指向显示屏的电子束(EB)。 电子枪包括第一和第二电极(CA,G1)。 电子束(EB)起源于第一电极(CA)。 第一电极(CA)和第二电极(G1)之间的电压控制电子束(EB)的强度。 射束电流(IB)响应于电子束(EB)在第一电极(CA)中流动。 第一电极(CA)中的总电流(ICA)是流过第一和第二电极(CA,G1)之间的电容(CIN)的电流(IB)和电流(IC)之和。 补偿电路(COM)通过第一和第二电极(CA,G1)之间的电容(CIN)向第一电极(CA)提供补偿电流(ICO)以补偿电容电流(IC)。 光束电流测量电路(BMC)测量作为第一电极(ICA)中的总电流与补偿电流(ICO)之和的总电流(IT)。
    • 3. 发明申请
    • DRIVING METHOD AND DRIVING APPARATUS FOR A FIELD EMISSION DEVICE
    • 用于场发射装置的驱动方法和驱动装置
    • WO02033689A1
    • 2002-04-25
    • PCT/JP2001/007140
    • 2001-08-21
    • H01J1/304G09G1/00G09G3/20G09G3/22H01J3/02
    • G09G3/22G09G1/002G09G2300/08G09G2320/043H01J3/022
    • The object of the present invention is to provide a driving method and a driving apparatus for a field emission device that controls emission current with stability regardless of how long the device is driven. The field emission device driving method and driving apparatus of the present invention set the actual emission current at a reference level by adjusting the amount of current which is supplied to the emitter to a reference level. The amount of current supplied to the emitter is adjusted to the reference level by increasing the driving voltage in response to driving time elapsing in a state in which the electron emission performance is sustained above the reference level. By adjusting the amount of current supplied to the emitter in a state in which the driving voltage is sustained higher than the minimum voltage, a stable amount of emission current can be sustained and electron emission without fluctuations can be realized, even when the performance of the field emission device in emitting electrons deteriorates due to driving time elapsing.
    • 本发明的目的是提供一种用于场发射装置的驱动方法和驱动装置,其无论驱动器件多长时间,都能稳定地控制发射电流。 本发明的场致发射器件驱动方法和驱动装置通过将提供给发射极的电流量调整到参考电平来将实际发射电流设定在参考电平。 通过在电子发射性能维持在基准电平以上的状态下经过的驱动时间增加驱动电压,将供给发射极的电流量调整到参考电平。 通过调节在驱动电压维持高于最小电压的状态下提供给发射极的电流量,可以维持稳定的发射电流量,并且可以实现不发生波动的电子发射。 由于驱动时间的流逝,发射电子的场致发射器件劣化。