公开(公告)号：US20170202072A1

公开(公告)日：2017-07-13

申请号：US15392499

申请日：2016-12-28

Applicant: SILICON WORKS CO., LTD.

Inventor： Yong Geun KIM ,  Gyeong Sik Mun ,  Geon Soo Jang

IPC: H05B33/08

CPC classification number: H05B33/0887 ,  H05B33/0815 ,  H05B33/083 ,  H05B33/0842

Abstract: Disclosed is a lighting apparatus using an LED as a light source. The lighting apparatus may include: a first driver configured to control a flow of a first current through a low-power switching element by comparing a reference voltage and a sensing voltage, in response to light emission of an LED group; and a second driver configured to form a flow of a second current through a high-power switching element in connection with the flow of the first current of the first driver, in response to light emission of the LED group. The lighting apparatus stably provides a current path for a current corresponding to high power.

公开(公告)号：US09961732B2

公开(公告)日：2018-05-01

申请号：US15439151

申请日：2017-02-22

Applicant: SILICON WORKS CO., LTD.

Inventor： Gyeong Sik Mun ,  Geon Soo Jang

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/083 ,  Y02B20/341

Abstract: Disclosed is a control circuit for a lighting apparatus using an LED as a light source. The control circuit controls a driving current of a driving circuit, using a monitoring result for a rectified voltage and a monitoring result for an output voltage of a specific LED group among a plurality of LED groups.

公开(公告)号：US11676520B2

公开(公告)日：2023-06-13

申请号：US17408047

申请日：2021-08-20

Applicant: SILICON WORKS CO., LTD.

Inventor： Geon Soo Jang ,  Hyung Sub Kim ,  Jung Hyun Tark

IPC: G09G3/20 ,  G06F3/041

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G06F3/0416 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2330/021 ,  G09G2330/028

Abstract: The present disclosure relates to a technology for a power management device applied to a display device, in which driving voltages having different levels are supplied to driving devices having different sizes of load in different times, and this allows all of the driving devices to stably receive voltages within a limited range even though the number of driving devices increases according to the enlargement of a display panel.

公开(公告)号：US20220068180A1

公开(公告)日：2022-03-03

申请号：US17408047

申请日：2021-08-20

Applicant: SILICON WORKS CO., LTD.

Inventor： Geon Soo Jang ,  Hyung Sub Kim ,  Jung Hyun Tark

IPC: G09G3/20 ,  G06F3/041

Abstract: The present disclosure relates to a technology for a power management device applied to a display device, in which driving voltages having different levels are supplied to driving devices having different sizes of load in different times, and this allows all of the driving devices to stably receive voltages within a limited range even though the number of driving devices increases according to the enlargement of a display panel.