US 12,189,238 B2
Backlight unit and display device comprising same
Dae Sik Lee, Hwaseong-si (KR); Sung Chul Hong, Asan-si (KR); Jun Pyo Lee, Asan-si (KR); Ji Eun Lee, Seoul (KR); and Song Yi Han, Asan-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/626,259
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed Apr. 7, 2020, PCT No. PCT/KR2020/004668
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/010572, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 10-2019-0084190 (KR), filed on Jul. 12, 2019.
Prior Publication US 2022/0276533 A1, Sep. 1, 2022
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133612 (2021.01) [G02F 1/133603 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A backlight unit comprising:
a substrate comprising:
a first area having light source blocks; and
a second area having light source blocks; and
a light source driver disposed on at least one side of the substrate and electrically connected to the light source blocks of each of the first and second areas through each of first and second sensing lines, wherein
the first sensing lines electrically connected to the light source blocks of the first area have a first resistance value,
the second sensing lines electrically connected to the light source blocks of the second area have a second resistance value, and
a power supply part supplying a first driving voltage only to the light source blocks of the first area and supplying a second driving voltage only to the light source blocks of the second area.