US 12,487,274 B2
Pixel detection device and pixel detection method
Wen-Chiuan Su, Hsin-Chu (TW); Yu-Chi Hsiao, Hsin-Chu (TW); and Ling-Ying Chien, Hsin-Chu (TW)
Assigned to AUO CORPORATION, Hsin-Chu (TW)
Filed by AUO Corporation, Hsin-Chu (TW)
Filed on Dec. 8, 2023, as Appl. No. 18/533,269.
Claims priority of application No. 112117829 (TW), filed on May 12, 2023.
Prior Publication US 2024/0377452 A1, Nov. 14, 2024
Int. Cl. G01R 31/28 (2006.01); G01R 31/26 (2020.01)
CPC G01R 31/2837 (2013.01) [G01R 31/2635 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel detection device, comprising:
a first substrate, comprising:
a first sub-pixel circuit, wherein the first sub-pixel circuit comprises a first light emitting element;
a first detection transistor, coupled to the first light emitting element;
a first detection board, coupled to the first detection transistor; and
a second detection board, coupled to the first light emitting element;
wherein the first detection board is configured to output a first detecting signal in a first sub-stage of a first stage, and the first detecting signal is switched from a first voltage level to a second voltage level to control a first voltage of the first detection transistor, wherein the second detection board is configured to output a second detecting signal in the first sub-stage, and the second detecting signal is switched from second voltage level to the first voltage level to control a second voltage of the first light emitting element, wherein the first detection transistor and the first light emitting element are conducted according to the first voltage and the second voltage to light up the first light emitting element, so as to detect whether a brightness of the first light emitting element is abnormal.