US 12,451,078 B2
Brightness control for under-display sensor
Sang Young Youn, Cupertino, CA (US); and Chien-Hui Wen, Cupertino, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Jan. 25, 2024, as Appl. No. 18/422,652.
Application 18/422,652 is a continuation of application No. 17/919,108, granted, now 11,908,415, previously published as PCT/US2021/055387, filed on Oct. 18, 2021.
Prior Publication US 2024/0169923 A1, May 23, 2024
Int. Cl. G09G 3/3258 (2016.01); G06V 40/13 (2022.01); G09G 5/10 (2006.01)
CPC G09G 3/3258 (2013.01) [G06V 40/1318 (2022.01); G09G 5/10 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
providing, with a data line of a display during a programming stage of each of multiple first contiguous frames, an initial steady state voltage to a pixel circuit for a pixel of the display, to cause an LED of the pixel circuit to emit light at a first light intensity for the multiple first contiguous frames;
receiving an indication to activate an under-display sensor that is located underneath the display;
providing, with the data line of the display during a programming stage of an intermediate frame that follows the multiple first contiguous frames, responsive to receiving the indication to activate the under-display sensor, an overdriven voltage to the pixel circuit, to cause the LED of the pixel circuit to emit light at a second light intensity that is greater than the first light intensity;
providing, with the data line of the display during a programming stage of a second intermediate frame that follows the intermediate frame, a second overdriven voltage to the pixel circuit, the second overdriven voltage being between the overdriven voltage and a second steady state voltage, the second steady state voltage being between the initial steady state voltage and the overdriven voltage, a voltage difference between the second overdriven voltage and the second steady state voltage being less than a voltage difference between the overdriven voltage and the second steady state voltage;
providing, with the data line of the display during a programming stage of each of multiple second contiguous frames that follow the second intermediate frame, the second steady state voltage that is between the initial steady state voltage and the overdriven voltage, to cause the LED of the pixel circuit to emit light at a third light intensity that is greater than the first light intensity, for the multiple second contiguous frames; and
activating the under-display sensor, including reading a signal from the under-display sensor during the multiple second contiguous frames.