Low current drive of light emitting devices
    1.
    发明授权
    Low current drive of light emitting devices 有权
    发光器件的低电流驱动

    公开(公告)号:US06191534B1

    公开(公告)日:2001-02-20

    申请号:US09357786

    申请日:1999-07-21

    IPC分类号: G09G312

    摘要: Control circuitry for an array of light emitting devices includes a first column line connected to each light emitting device in a column of light emitting devices. First column circuitry includes a first current source and a second current source. The first current source is connected to the first column line. The second current source is connected to the first column line. When a first light emitting device from the column of light emitting devices is to be turned on, the first current source is turned on until a voltage on the first column line is equal to a predetermined voltage. Then the first current source is turned off and the second current source supplies current sufficient to cause the first light emitting device to emit light to a first brightness level.

    摘要翻译: 用于发光器件阵列的控制电路包括连接到发光器件列中的每个发光器件的第一列线。 第一列电路包括第一电流源和第二电流源。 第一个电流源连接到第一列。 第二电流源连接到第一列线。 当来自发光器件列的第一发光器件将导通时,第一电流源被导通,直到第一列线上的电压等于预定电压。 然后关闭第一电流源,并且第二电流源提供足以使第一发光器件发光到第一亮度水平的电流。