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    • 13. 发明申请
    • LED CAPACITANCE DISCHARGE WITH LIMITED CURRENT
    • 带电流的LED电容放电
    • WO2003098974A1
    • 2003-11-27
    • PCT/IB2003/001554
    • 2003-04-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.SEMPEL, Adrianus
    • SEMPEL, Adrianus
    • H05B33/08
    • G09G3/3216G09G3/3275G09G2310/0248G09G2310/0251G09G2320/0233G09G2330/025G09G2330/06H05B33/0896
    • This invention relates to a driver (10') for light emitting devices with an associated capacitance, comprising: - a first switch (S2') coupled to a first terminal (11a') of a light emitting device (11') included in a two dimensional array of light emitting devices, the first switch (S2') being coupled for allowing discharging of the associated capacitance (12') of the light emitting device (11') upon closing of the first switch (S2'); and- a current limiting circuit (31) coupled to the first switch (S2') and to a reference voltage for discharging the associated capacitance (12') with a limited current. Further, the current limiting circuit (31) comprises a first discharge circuit (50) and a second discharge circuit. As a result, the discharge current is controlled in an efficient manner during discharging of the associated capacitance (12').
    • 本发明涉及一种用于具有相关电容的发光器件的驱动器(10'),包括: - 耦合到包括在发光器件(11')中的发光器件(11')的第一端子(11a')的第一开关(S2') 发光装置的二维阵列,第一开关(S2')被耦合以允许在关闭第一开关(S2')时放电发光装置(11')的相关电容(12'); 以及耦合到第一开关(S2')的限流电路(31)和用于以有限电流放电相关电容(12')的参考电压。 此外,限流电路(31)包括第一放电电路(50)和第二放电电路。 结果,在相关联的电容(12')的放电期间,放电电流被有效地控制。