US 11,055,510 B1
Display panel and control method thereof
Chihjen Cheng, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Aug. 7, 2020, as Appl. No. 16/988,569.
Claims priority of application No. 202010157678.6 (CN), filed on Mar. 9, 2020.
Int. Cl. G06K 9/00 (2006.01); G06K 9/20 (2006.01)
CPC G06K 9/0004 (2013.01) [G06K 9/209 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising:
an active pixel sensor array, comprising a plurality of pixel circuits arranged in multiple rows, wherein each of the pixel circuit comprises, a photoelectric conversion module, a signal output terminal, a voltage control terminal, a gating module configured to connect to the photoelectric conversion module and the signal output terminal, and a pre-discharging module, comprising a first end and a second end, wherein the first end is configured to connect between the photoelectric conversion module and the gating module, and the second end is configured to connect to the voltage control terminal;
a control module, connected to the active pixel sensor array, and configured to, control the gating module in a current row to turn on, read a voltage signal outputted from the signal output terminal in the current row, generate a reference voltage signal according to the voltage signal, before the gating module in a next row is turned on, output the reference voltage signal to the voltage control terminal in the next row and control the pre-discharging module in the next row to turn on.