US 12,452,489 B2
Display device
Sungyun Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/927,349
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed May 26, 2020, PCT No. PCT/KR2020/006791
§ 371(c)(1), (2) Date Nov. 22, 2022,
PCT Pub. No. WO2021/241772, PCT Pub. Date Dec. 2, 2021.
Prior Publication US 2023/0209137 A1, Jun. 29, 2023
Int. Cl. H04N 21/00 (2011.01); F16M 11/42 (2006.01); H02J 7/00 (2006.01); H04N 5/64 (2006.01); H04N 21/443 (2011.01)
CPC H04N 21/4436 (2013.01) [F16M 11/42 (2013.01); H02J 7/0042 (2013.01); H02J 7/0048 (2020.01); H04N 5/64 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A display device comprising:
a carrier having a built-in battery and a display panel driven upon receiving power from the battery,
wherein the carrier includes:
a power receiving unit charging the battery,
a detection unit detecting a remaining battery capacity,
a front camera detecting whether a user is watching a screen of the display panel, and
a speaker driven upon receiving power from the battery;
a cradle moving toward or away from the carrier, wherein the cradle includes a power transmitting unit providing power to the power receiving unit; and
a controller controlling output of a charging message indicating that the battery needs charging when the remaining battery capacity is less than a certain amount,
wherein the front camera is provided at a front of the carrier,
wherein the controller controls the display panel to output the charging message when it is determined that the user is watching the screen of the display panel during operation of the display panel, based on information obtained by the front camera, and
wherein the controller controls the speaker to output the charging message when it is determined that the user is not watching the screen of the display panel during the operation of the display panel, based on information obtained by the front camera.