公开(公告)号：US11910499B2

公开(公告)日：2024-02-20

申请号：US17575281

申请日：2022-01-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Junhyun Won ,  Jiwon Lee ,  Sungyong Joo ,  Taejun You

IPC: H05B45/10 ,  H05B45/30 ,  H01L27/15

CPC classification number: H05B45/10 ,  H01L27/153 ,  H05B45/30

Abstract: An electronic apparatus is provided. The electronic apparatus includes: a plurality of LED arrays disposed in parallel, a first sensing inductor connected to a first LED array of the plurality of LED arrays in series, a first auxiliary inductor disposed adjacent to the first sensing inductor, a second sensing inductor connected to a second LED array of the plurality of LED arrays in series, a second auxiliary inductor disposed adjacent to the second sensing inductor, a variable resistance connected to the plurality of LED arrays and configured to adjust an amount of a current flowing to the plurality of LED arrays according to a resistance value, and an LED driver configured to, based on at least one of a first induced voltage generated on the first auxiliary inductor or a second induced voltage generated in the second auxiliary inductor being a threshold voltage or more, identify that an error occurs in at least one of the first LED array or the second LED array, and adjust the resistance value of the variable resistance based on the identified result.

公开(公告)号：US11804186B2

公开(公告)日：2023-10-31

申请号：US17573937

申请日：2022-01-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jiwon Lee ,  Sungyong Joo ,  Junhyun Won

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2310/08 ,  G09G2320/064 ,  G09G2330/021

Abstract: A display apparatus includes a power supply device. The power supply device includes a power supply part and an integrated circuit chip. The power supply part outputs a first power to drive a backlight and a second power to drive a main circuit. The integrated circuit chip increases, based on a control signal to adjust a brightness of the backlight being received, a current value of the second power, and reduces, based on the control signal not being received for a first threshold time, the current value of the second power.

公开(公告)号：US11031777B2

公开(公告)日：2021-06-08

申请号：US16421987

申请日：2019-05-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungyong Joo ,  Sunjin Park

IPC: H02H9/04 ,  H02H1/00 ,  H05B45/37 ,  H02H9/08

Abstract: An electronic apparatus is provided. The electronic apparatus according to an embodiment includes a main circuit unit, a power source supplier configured to generate power, and supply the generated power to the main circuit unit, and a surge protector disposed between the main circuit unit and the power source supplier, the surge protector being configured to, based on a surge occurring from the power source supplier, perform a clamping operation on power output from the power source supplier at a first voltage level, wherein the power source supplier is further configured to, based on the clamping operation of the surge protector at the first voltage level being stopped, perform a clamping operation on the generated power at a second voltage level greater than the first voltage level.

公开(公告)号：US20190324522A1

公开(公告)日：2019-10-24

申请号：US16388368

申请日：2019-04-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jiwon Lee ,  Jaeeun Kim ,  Sungyong Joo

IPC: G06F1/3234 ,  G09G5/00 ,  G06F1/26 ,  G06F1/3296

Abstract: A display device according to an embodiment includes a first power module that receives AC power from an external power supply, a second power module that receives the AC power through the first power module, and a load circuit that outputs a specified signal when a user input is received. A configuration of the display device with the three power modules reduces an inrush current when the display device is turned on. Also, a configuration of the display device with the three power modules reduces a standby power consumption when the display device is not turned on.