US 11,790,834 B2
Display device including light-emitting diode backlight unit
Byungil Kim, Hwaseong-si (KR); Yangwook Kim, Seoul (KR); Pansoo Kim, Yongin-si (KR); Hyeongtae Kim, Seoul (KR); Sukyun Woo, Hwaseong-si (KR); Jisu Yoon, Hwaseong-si (KR); and Hyunji Yoon, Daegu (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 30, 2021, as Appl. No. 17/537,950.
Claims priority of application No. 10-2020-0170756 (KR), filed on Dec. 8, 2020; and application No. 10-2021-0055034 (KR), filed on Apr. 28, 2021.
Prior Publication US 2022/0180801 A1, Jun. 9, 2022
Int. Cl. G09G 3/32 (2016.01); G09G 3/34 (2006.01)
CPC G09G 3/32 (2013.01) [G09G 3/3426 (2013.01); G09G 2300/0814 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/064 (2013.01); G09G 2320/066 (2013.01); G09G 2320/0633 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a light-emitting diode (LED) backlight unit (BLU);
a pixel driving circuit configured to generate a scan signal and an image signal; and
a pixel circuit configured to generate an output current based on the scan signal and the image signal, and transmit the output current to the LED BLU,
the pixel circuit including,
a transistor configured to generate the output current according to a voltage of a gate node,
a capacitor connected to the gate node, and
a second transistor configured to discharge the gate node in response to detection of a voltage of an output current pin exceeding a reference voltage.