US 11,793,050 B2
Display device with calculation of body composition based on signal through input sensor
Yuna Kim, Seoul (KR); Soojung Lee, Suwon-si (KR); Seungwook Chun, Daegu (KR); and Boram Choi, Asan-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jul. 1, 2021, as Appl. No. 17/365,938.
Claims priority of application No. 10-2020-0130499 (KR), filed on Oct. 8, 2020.
Prior Publication US 2022/0115450 A1, Apr. 14, 2022
Int. Cl. G06F 3/041 (2006.01); H10K 59/40 (2023.01); G06F 3/044 (2006.01); A61B 5/00 (2006.01); G06F 3/01 (2006.01)
CPC H10K 59/40 (2023.02) [A61B 5/443 (2013.01); G06F 3/011 (2013.01); G06F 3/0412 (2013.01); G06F 3/0416 (2013.01); G06F 3/0446 (2019.05); G06F 3/0448 (2019.05); A61B 2562/0214 (2013.01); G06F 2203/04112 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel configured to display an image;
an input sensor arranged on the display panel and comprising a plurality of transmission electrodes and a plurality of reception electrodes electrically insulated from the plurality of transmission electrodes; and
a readout circuit electrically connected to the input sensor,
wherein the readout circuit is configured to sequentially output a transmission signal, which is in an active level, to the plurality of transmission electrodes, and to receive a reception signal from a first reception electrode among the plurality of reception electrodes during a first sensing period of a body composition sensing mode,
wherein the readout circuit is configured to sequentially output a transmission signal, which is in an active level, to the plurality of transmission electrodes, and to receive a reception signal from a second reception electrode among the plurality of reception electrodes during a second sensing period of the body composition sensing mode, the second sensing period being different than the first sensing period,
wherein the readout circuit comprises:
an analog-to-digital converter configured to convert the reception signal into a digital reception signal; and
a body composition calculator configured to calculate a moisture level of a user based on the digital reception signal,
wherein the body composition calculator calculates the moisture level y using a following equation
y=a+(b×DSX)
where each of ‘a’ and ‘b’ is a preset constant, and DSX denotes the digital reception signal.