US 12,471,443 B2
Semi-transparent display
Bernd Richter, Dresden (DE); Philipp Wartenberg, Dresden (DE); Stephan Brenner, Dresden (DE); Volker Kirchhoff, Wehlen (DE); and Uwe Vogel, Dresden (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on May 16, 2022, as Appl. No. 17/745,268.
Application 17/745,268 is a division of application No. 16/768,512, granted, now 11,362,164, previously published as PCT/EP2018/084349, filed on Dec. 11, 2018.
Claims priority of application No. 10 2017 129 524.0 (DE), filed on Dec. 12, 2017.
Prior Publication US 2022/0278188 A1, Sep. 1, 2022
Int. Cl. H01L 27/32 (2006.01); H10D 86/01 (2025.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01); H10K 59/121 (2023.01); H10K 59/131 (2023.01); H10K 59/82 (2023.01)
CPC H10K 59/121 (2023.02) [H10D 86/0221 (2025.01); H10D 86/441 (2025.01); H10D 86/60 (2025.01); H10K 59/131 (2023.02); H10K 59/82 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A semi-transparent display comprising:
a residual assembly comprising a silicon on insulator (“SOI”) wafer with a pixel region and a contact region situated next to the pixel region, wherein the SOI wafer is missing a silicon substrate removed from a rear side of the SOI wafer;
an electromagnetic radiation emitting layer deposited on a front side of the SOI wafer;
a transparent cover layer applied above the electromagnetic radiation emitting layer;
a wiring carrier attached to a rear side of the residual assembly, wherein the wiring carrier comprises a printed circuit board having a recess at least in the pixel region; and
a plurality of electrically conductive connections arranged between the contact region of the SOI wafer and the wiring carrier from the rear side of the SOI wafer and include a bump bond or an anisotropically conducting bond;
wherein the pixel region includes a plurality of subsections in which no circuit elements and no electrically conductive elements are situated, further wherein the subsections are permitting light detectable with a human eye to pass from a front side of the semi-transparent display to a rear side of the semi-transparent display.