US 12,249,281 B2
Display device for providing biometric information using infrared light
Chul Kim, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Mar. 21, 2023, as Appl. No. 18/187,458.
Claims priority of application No. 10-2022-0096088 (KR), filed on Aug. 2, 2022.
Prior Publication US 2024/0046869 A1, Feb. 8, 2024
Int. Cl. G06F 3/045 (2006.01); G06F 3/044 (2006.01); G06V 40/10 (2022.01); G09G 3/3233 (2016.01); H10K 39/34 (2023.01); A61B 5/00 (2006.01); H10K 59/10 (2023.01)
CPC G09G 3/3233 (2013.01) [G06F 3/0446 (2019.05); G06V 40/15 (2022.01); H10K 39/34 (2023.02); A61B 5/0075 (2013.01); G09G 2300/0452 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2354/00 (2013.01); G09G 2360/14 (2013.01); H10K 59/10 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display device comprising:
display pixels arranged in a display area of a display panel;
infrared light emitting pixels arranged in the display area to alternate with the display pixels;
light sensing pixels arranged in the display area to alternate with the infrared light emitting pixels, wherein the light sensing pixels detect light sensing signals based on reflected light reflected from an object;
a display scan driver supplying display scan signals to the display pixels and the infrared light emitting pixels;
a light sensing driver sequentially supplying sensing scan signals to the light sensing pixels; and
a component detection circuit for generating biomarker information using the light sensing signals received from the light sensing pixels,
wherein the display area comprises:
an image display area in which only the display pixels are disposed without the infrared light emitting pixels and the light sensing pixels; and
a reflected light sensing area in which the display pixels, the infrared light emitting pixels, and the light sensing pixels are alternately disposed,
where the image display area completely surrounds the reflected light sensing area,
wherein the component detection circuit comprises:
an analog-to-digital (A2D) converter converting the light sensing signals from the light sensing pixels into digital light sensing signals;
a delay circuit storing, delaying and outputting the digital light sensing signals in units of at least one horizontal line or frame; and
an arithmetic processing unit generating biometric data by performing an arithmetic operation on one of the digital light sensing signals output from the A2D converter and one of the delayed digital light sensing signals output from the delay circuit.