公开(公告)号：US11120735B2

公开(公告)日：2021-09-14

申请号：US16800023

申请日：2020-02-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyoungjun Kim ,  Dongsoo Lim

IPC: G09G3/32 ,  H01L33/62 ,  G09G3/34 ,  H01L23/60 ,  H01L25/16 ,  H01L25/075

Abstract: A light emitting device package includes a first light emitting diode pixel, the first light emitting diode pixel including first light emitting diode chips that each emit light, and a first pixel driving integrated circuit under the first light emitting diode chips of the first light emitting diode pixel, the first pixel driving integrated circuit configured to drive the first light emitting diode chips based on an active matrix scheme, in which each of the first light emitting diode chips is driven using an entire one frame interval, and based on a pulse width modulation scheme, in which a time during which each of first driving currents is applied to a respective one of the first light emitting diode chips is controlled within the entire one frame interval.

公开(公告)号：US11428385B2

公开(公告)日：2022-08-30

申请号：US17379530

申请日：2021-07-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongsoo Lim ,  Chinwoo Kim ,  Yongchul Kang ,  Heejin Kim ,  Jeongje Moon ,  Jaeyoo Jeong ,  Jun Cho ,  Jongwook Ju

IPC: F21V14/00 ,  F21V33/00 ,  F21Y115/10

Abstract: Provided is a light source module including a package body having a groove portion, a semiconductor light emitting diode (LED) chip provided on a bottom surface of the groove portion, the semiconductor LED chip being configured to emit light based on a first driving voltage applied thereto, a variable light transmission unit provided on the groove portion and having light transmissivity varying based on a second driving voltage applied thereto, a first electrode side surface and a second electrode side surface provided on side surfaces of the groove portion and connecting the bottom surface of the groove portion to the variable light transmission unit, and a processor configured to control application of the first driving voltage to the semiconductor LED chip and the second driving voltage to the variable light transmission unit.