US 12,032,779 B2
Detection device and display device
Daijiro Takano, Tokyo (JP); and Mitsuhiro Sugawara, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jul. 28, 2022, as Appl. No. 17/875,653.
Claims priority of application No. 2021-125621 (JP), filed on Jul. 30, 2021; and application No. 2021-200260 (JP), filed on Dec. 9, 2021.
Prior Publication US 2023/0033119 A1, Feb. 2, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/042 (2006.01); G06V 40/13 (2022.01); G06V 40/40 (2022.01)
CPC G06F 3/04166 (2019.05) [G06F 3/0412 (2013.01); G06F 3/0421 (2013.01); G06V 40/1318 (2022.01); G06F 2203/04108 (2013.01); G06V 40/45 (2022.01)] 24 Claims
OG exemplary drawing
 
1. A detection device comprising:
a sensor circuit in which a plurality of detection elements each comprising a photoelectric conversion element are arranged in a matrix having a row-column configuration in a detection area; and
a detector having a touch detection period of detecting an object to be detected in contact with or in proximity to the sensor circuit and a fingerprint detection period of detecting asperities on a surface of the object to be detected, wherein
the detector is configured to:
perform detection in the touch detection period by selecting the detection elements arranged on a substrate at a first detection pitch among the detection elements included in the detection area; and
perform the detection in the fingerprint detection period by selecting the detection elements arranged on the substrate at a second detection pitch smaller than the first detection pitch among the detection elements included in the detection area.