Patent ID: 11922880
Assignee: LX SEMICON CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A current supply circuit comprising:
a first current mirror circuit configured to mirror a data current through first and second transistors and to output a mirrored data current to a light-emitting diode (LED);
a voltage/current converter comprising an amplifier configured to receive a data voltage through a first input terminal thereof and to output the data voltage and a third transistor configured to receive the data voltage output from the amplifier through a gate terminal thereof and to generate the data current; and
a compensation current generation circuit configured to change the data current by supplying a compensation current to the first current mirror circuit, wherein
the compensation current generation circuit includes a first current source comprising a transistor configured to output a base current defined by a data voltage, and a second current source configured to form a common node by being electrically connected to one terminal of the first current source and to output a direct current.