US 11,990,068 B2
Display device
Dae-Sik Lee, Hwaseong-si (KR); Keunoh Kang, Uijeongbu-si (KR); and Sanghyun Lee, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Dec. 15, 2022, as Appl. No. 18/082,071.
Claims priority of application No. 10-2022-0027658 (KR), filed on Mar. 3, 2022.
Prior Publication US 2023/0282142 A1, Sep. 7, 2023
Int. Cl. G09G 3/00 (2006.01); G09G 3/3208 (2016.01)
CPC G09G 3/006 (2013.01) [G09G 3/3208 (2013.01); G09G 2330/02 (2013.01); G09G 2330/04 (2013.01); G09G 2330/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel comprising a plurality of pixels, which displays an image;
a first circuit board connected to the display panel and which provides a first signal to the display panel;
a second circuit board, which provides a second signal to the first circuit board; and
a connection board, which electrically connects the first circuit board to the second circuit board and comprises a connection portion connected to the first circuit board and the second circuit board,
wherein the second circuit board comprises a connection detection circuit, which detects a connection status of the connection portion and generates a detection signal,
wherein the second circuit board further comprises a voltage generator,
wherein the connection detection circuit comprises a detection line connected to the voltage generator, a first node and a second node, and passing through the connection portion between the first and second nodes, and the connection portion comprises a plurality of contact portions through which the detection line passes.