US 11,900,844 B1
Display panel and display device for abnormal detection
Fang-Yuan Lin, Hsin-Chu (TW); Chen-Chi Lin, Hsin-Chu (TW); Yu-Chieh Kuo, Hsin-Chu (TW); and Cheng-Wei Lai, Hsin-Chu (TW)
Assigned to AUO CORPORATION, Hsin-Chu (TW)
Filed by AUO Corporation, Hsin-Chu (TW)
Filed on Dec. 29, 2022, as Appl. No. 18/147,730.
Claims priority of application No. 111147266 (TW), filed on Dec. 8, 2022.
Int. Cl. G09G 3/00 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/0202 (2013.01); G09G 2310/08 (2013.01); G09G 2330/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a data line; and
a pixel circuit under test, coupled to the data line, and configured to receive a first detecting signal from a detecting signal source and receive a second detecting signal from a pixel data signal source, wherein the pixel circuit under test is configured to generate a driving current to read the first detecting signal and the second detecting signal so as to generate a detection result signal, wherein the pixel circuit under test comprises:
a luminous element, configured to emit a light according to the driving current;
a bypass circuit, coupled to the luminous element and the data line, and configured to transmit the detection result signal to the detecting signal source through the data line according to a test control signal so that the detecting signal source determines whether the pixel circuit under test is abnormal; and
a pulse-width modulation circuit, coupled to the detecting signal source and a first control signal source, and configured to drive according to a first control signal of the first control signal source.