公开(公告)号：US20230154388A1

公开(公告)日：2023-05-18

申请号：US17916920

申请日：2020-04-23

Applicant: LG ELECTRONICS INC.

Inventor： Jaewoon LEE ,  Kwanwoo PARK ,  Seongjin PARK ,  Soobeom LEE ,  Jeongin CHEON ,  Kyungho LEE ,  Eungdoo KIM

IPC: G09G3/32 ,  G09G3/00

CPC classification number: G09G3/32 ,  G09G3/005 ,  G09G2310/0264 ,  G09G2320/0233 ,  G09G2360/16

Abstract: The present invention relates to a persistence of vision (POV) display device using a light-emitting element, and the POV display device may comprise: a fixed module including a motor; a rotation module positioned on the fixed module and rotated by the motor; at least one panel coupled to the rotation module; a plurality of light sources arranged on the panel and having a plurality of pixels; a plurality of driver ICs which control the plurality of light sources, and are positioned on the panel and arranged in the opposite directions of the plurality of light sources; a light source module including a light-emitting element array in which the plurality of light sources are arranged in the longitudinal direction, and the plurality of driver ICs; and a controller which electrically separates clocks of the driver ICs and applies the separated clocks to the plurality of pixels.

公开(公告)号：US20210166620A1

公开(公告)日：2021-06-03

申请号：US17258069

申请日：2018-10-18

Applicant: LG ELECTRONICS INC. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

Inventor： Sunghwan KIM ,  Seongjin PARK ,  Oh-Kyong KWON

IPC: G09G3/32

Abstract: Discussed is a display device including a plurality of semiconductor light-emitting devices applied to sub-pixels included in each pixel of a display panel; and a driving unit for driving the plurality of semiconductor light-emitting devices on the basis of a digital pulse width modulation (PWM) signal, wherein the driving unit further includes: a current sensing unit for sensing the value of a current flowing through at least one of the plurality of semiconductor light-emitting devices; and a current compensation unit for compensating for the current deviation between the plurality of semiconductor light-emitting devices on the basis of the current value sensed by the sensing unit.

公开(公告)号：US20220377916A1

公开(公告)日：2022-11-24

申请号：US17772298

申请日：2019-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Seongjin PARK

IPC: H05K5/00 ,  H05K5/02

Abstract: The present disclosure is applicable to a display apparatus-related technical field, and relates to, for example, a rotating display apparatus using a light-emitting diode (LED) which is a semiconductor light-emitting device. The rotating display apparatus using a light-emitting device of the present disclosure may comprise: a fixed part including a motor; a rotary part positioned on the fixed part and coupled to a rotary shaft of the motor so as to rotate; a first light source module installed on the rotary part and including at least one first panel disposed on an outer peripheral surface of an imaginary cylinder in the same direction as the rotary shaft, and a first light-emitting device array in which individual pixels are disposed on respective first panels in the length direction of the first panel; and a second light source module installed on the rotary part and including at least one second panel disposed in a direction perpendicular to the rotary shaft, and a second light-emitting device array in which individual pixels are disposed on respective second panels.