US 12,133,443 B2
Display device that includes openings of a light blocking member overlapping a light emitting layer or a light receiving layer
Suk Kim, Yongin-si (KR); Gee Bum Kim, Yongin-si (KR); Tae Hoon Yang, Yongin-si (KR); Byeong Wook Yoo, Yongin-si (KR); Dae Young Lee, Yongin-si (KR); and Keum Dong Jung, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Oct. 27, 2021, as Appl. No. 17/511,733.
Claims priority of application No. 10-2021-0028369 (KR), filed on Mar. 3, 2021.
Prior Publication US 2022/0285460 A1, Sep. 8, 2022
Int. Cl. H10K 59/60 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/84 (2023.01); H10K 50/86 (2023.01); H10K 59/121 (2023.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01); H10K 59/38 (2023.01); H10K 59/40 (2023.01)
CPC H10K 59/60 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/84 (2023.02); H10K 50/865 (2023.02); H10K 59/1213 (2023.02); H10K 59/122 (2023.02); H10K 59/131 (2023.02); H10K 59/38 (2023.02); H10K 59/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a base layer;
a backplane structure provided on the base layer, the backplane structure including pixel circuits and a sensor circuit;
a pixel layer provided on the backplane structure, the pixel layer including light emitting elements respectively connected to the pixel circuits and a light receiving element connected to the sensor circuit;
an encapsulation layer covering the pixel layer;
a light blocking member provided on the encapsulation layer, wherein the light blocking member includes openings overlapping the light emitting elements and the light receiving element; and
a color filter provided on the encapsulation layer and covering the light blocking member,
wherein the light emitting elements include light emitting layers, the light receiving element includes a light receiving layer, and at least one of the openings of the light blocking member overlaps one of the light emitting layers and the light receiving layer,
wherein a pixel circuit disposed on a pixel row among the pixel circuits comprises:
a first pixel transistor for receiving a voltage of a first power source from a first power line and generating a driving current supplied to one of the light emitting elements;
a second pixel transistor connected between a data line and a first electrode of the first pixel transistor, the second pixel transistor including a gate electrode connected to a first scan line; and
a third pixel transistor connected between a gate electrode of the first pixel transistor and an initialization power line, the third pixel transistor including a gate electrode connected to a second scan line, and
wherein the sensor circuit disposed on the pixel row comprises:
a first sensor transistor and a second sensor transistor, connected in series between a second power line to which the voltage of the first power source is supplied and a readout line; and
a third sensor transistor connected between the initialization power line and the light receiving element.