US 12,464,920 B2
Suppressing scattering of light transmitted through OLED displays
Sangmoo Choi, Palo Alto, CA (US); Jyothi Karri, San Jose, CA (US); Ion Bita, Santa Clara, CA (US); and Chia-Kai Liang, San Jose, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Appl. No. 17/627,041
Filed by GOOGLE LLC, Mountain View, CA (US)
PCT Filed Sep. 17, 2020, PCT No. PCT/US2020/051183
§ 371(c)(1), (2) Date Jan. 13, 2022,
PCT Pub. No. WO2021/055547, PCT Pub. Date Mar. 25, 2021.
Claims priority of provisional application 62/901,526, filed on Sep. 17, 2019.
Prior Publication US 2022/0278186 A1, Sep. 1, 2022
Int. Cl. H10K 59/35 (2023.01); H10K 50/86 (2023.01); H10K 59/126 (2023.01); H10K 59/131 (2023.01); H10K 59/65 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/352 (2023.02) [H10K 50/86 (2023.02); H10K 59/131 (2023.02); H10K 59/65 (2023.02); H10K 59/8792 (2023.02); H10K 59/126 (2023.02); H10K 59/8791 (2023.02)] 16 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a display panel comprising a first pixel area having a first pixel density and a second pixel area having a second pixel density higher than the first pixel density, the display panel configured to generate images viewable from a front side of the display panel; and
a sensor positioned at a back side of the display panel and arranged to receive incident light transmitted from the front side of the display to the back side of the display panel through the first pixel area, wherein:
the first pixel area comprises light emitting pixels and signal lines electrically connecting pixel circuits associated with the light emitting pixels, and
the display panel comprises a layer comprising a light blocking material patterned to define apertures to transmit the incident light between at least some of the light emitting pixels and the signal lines and to block the incident light from the pixel circuits and the signal lines,
wherein the apertures comprise elliptical apertures of differing ellipticity.