US 12,067,910 B2
Display panel and method of testing the same
Won-Kyu Kwak, Seongnam-si (KR); Hwan-Soo Jang, Anyang-si (KR); and Seung-Kyu Lee, Anyang-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jun. 18, 2021, as Appl. No. 17/352,118.
Application 17/352,118 is a continuation of application No. 16/525,243, filed on Jul. 29, 2019, granted, now 11,087,654.
Application 16/525,243 is a continuation of application No. 14/823,912, filed on Aug. 11, 2015, granted, now 10,366,643, issued on Jul. 30, 2019.
Claims priority of application No. 10-2015-0030282 (KR), filed on Mar. 4, 2015.
Prior Publication US 2021/0312845 A1, Oct. 7, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/00 (2006.01); G09G 3/3291 (2016.01)
CPC G09G 3/006 (2013.01) [G09G 3/3291 (2013.01); G09G 2310/0291 (2013.01); G09G 2310/0297 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display panel comprising:
a display comprising pixel columns electrically connected to data lines;
a non-display area adjacent the display;
a test circuit configured to receive a lighting test signal passing through a lighting test line that is electrically coupled to a corresponding single pixel column of the pixel columns and configured to apply the lighting test signal to the single pixel column in response to a test control signal, wherein the lighting test line extends along the display through at least a portion of the non-display area; and
a demultiplexer configured to receive a data signal from an external component, and to transfer the data signal to the data lines in response to a switching signal.