D/A conversion circuit, organic EL drive circuit and organic EL display device
    1.
    发明授权
    D/A conversion circuit, organic EL drive circuit and organic EL display device 有权
    D / A转换电路,有机EL驱动电路和有机EL显示装置

    公开(公告)号:US07629908B2

    公开(公告)日:2009-12-08

    申请号:US12067811

    申请日:2006-09-26

    IPC分类号: H03M1/66 H03M1/68

    摘要: A D/A converter of the current switching type has a first current mirror circuit that D/A converts the upper (n−m) digits in n bit data to be converted and a weighting current circuit block or a second current mirror circuit that D/A converts the lower m digits in the data, by cascade connecting the weighting current circuit block or the second current mirror circuit at the upstream or at the downstream side of an output side transistor other than the output side transistors of the first current mirror circuit. In this manner, current flowing through the output side transistor flows as diverting currents to the weighting current circuit block or the second current mirror circuit corresponding to the digit weights of the lower m digits, and the diverting currents are taken out at the outputs of the D/A conversion circuit as analog converted currents of the lower m digits.

    摘要翻译: 电流开关型的AD / A转换器具有第一电流镜电路,其D / A转换要转换的n位数据中的上(nm)位,以及D / A转换的加权电流电路块或第二电流镜电路 通过在第一电流镜电路的输出侧晶体管以外的输出侧晶体管的上游或下游侧级联连接加权电流电路块或第二电流镜电路,数据中的较低m位数。 以这种方式,流过输出侧晶体管的电流作为转向电流流向对应于较低m位的数字权重的加权电流电路块或第二电流镜电路,并且转向电流在 D / A转换电路作为低m位数的模拟转换电流。

    D/A CONVERSION CIRCUIT, ORGANIC EL DRIVE CIRCUIT AND ORGANIC EL DISPLAY DEVICE
    2.
    发明申请
    D/A CONVERSION CIRCUIT, ORGANIC EL DRIVE CIRCUIT AND ORGANIC EL DISPLAY DEVICE 有权
    D / A转换电路,有机EL驱动电路和有机EL显示设备

    公开(公告)号:US20090179783A1

    公开(公告)日:2009-07-16

    申请号:US12067811

    申请日:2006-09-26

    IPC分类号: H03M1/66

    摘要: A D/A converter of the current switching type has a first current mirror circuit that D/A converts the upper (n−m) digits in n bit data to be converted and a weighting current circuit block or a second current mirror circuit that D/A converts the lower m digits in the data, by cascade connecting the weighting current circuit block or the second current mirror circuit at the upstream or at the downstream side of an output side transistor other than the output side transistors of the first current mirror circuit. In this manner, current flowing through the output side transistor flows as diverting currents to the weighting current circuit block or the second current mirror circuit corresponding to the digit weights of the lower m digits, and the diverting currents are taken out at the outputs of the D/A conversion circuit as analog converted currents of the lower m digits.

    摘要翻译: 电流开关型的AD / A转换器具有第一电流镜电路,其D / A转换要转换的n位数据中的上(nm)位,以及D / A转换的加权电流电路块或第二电流镜电路 通过在第一电流镜电路的输出侧晶体管以外的输出侧晶体管的上游或下游侧级联连接加权电流电路块或第二电流镜电路,数据中的较低m位数。 以这种方式,流过输出侧晶体管的电流作为转向电流流向对应于较低m位的数字权重的加权电流电路块或第二电流镜电路,并且转向电流在 D / A转换电路作为低m位数的模拟转换电流。