公开(公告)号：US11217152B1

公开(公告)日：2022-01-04

申请号：US17111449

申请日：2020-12-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Tso-Sheng Chan ,  Ren-Chieh Yang

IPC: G09G3/32

Abstract: The present invention provides a source driver for driving a light emitting diode panel. The source driver includes a buffer including an output terminal; and a plurality of driving circuits coupled to the buffer. Each of the plurality of driving circuits includes a constant current transistor including a gate controlled by a node voltage of the output terminal of the buffer; and a compensation unit for compensating the node voltage of the output terminal of the buffer.

公开(公告)号：US11291095B1

公开(公告)日：2022-03-29

申请号：US17216666

申请日：2021-03-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Tso-Sheng Chan ,  Jin-Yi Lin ,  Chun-Fu Lin ,  Jhih-Siou Cheng ,  Yu-Sheng Ma

IPC: H05B45/39

Abstract: A coupling compensation module is provided, for compensating a channel voltage of a channel outputted by a constant current circuit of a light emitting diode (LED) driver. The coupling compensation module includes a detecting circuit, for detecting a voltage variation of the channel voltage, to generate a detection result; and a compensation circuit, for compensating the voltage variation of the channel voltage according to the detection result.

公开(公告)号：US20210390901A1

公开(公告)日：2021-12-16

申请号：US17111449

申请日：2020-12-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Sheng Ma ,  Jhih-Siou Cheng ,  Chun-Fu Lin ,  Tso-Sheng Chan ,  Ren-Chieh Yang

IPC: G09G3/32

Abstract: The present invention provides a source driver for driving a light emitting diode panel. The source driver includes a buffer including an output terminal; and a plurality of driving circuits coupled to the buffer. Each of the plurality of driving circuits includes a constant current transistor including a gate controlled by a node voltage of the output terminal of the buffer; and a compensation unit for compensating the node voltage of the output terminal of the buffer.