US 11,984,435 B2
Multi-pixel display device with light-guiding structures and light-emitting semicondutor chips disposed on interated circuit
Thomas Schwarz, Regensburg (DE); and Frank Singer, Regenstauf (DE)
Assigned to OSRAM Opto Semiconductors GmbH, Regensburg (DE)
Appl. No. 17/289,114
Filed by OSRAM Opto Semiconductors GmbH, Regensburg (DE)
PCT Filed Nov. 8, 2019, PCT No. PCT/EP2019/080728
§ 371(c)(1), (2) Date Apr. 27, 2021,
PCT Pub. No. WO2020/104219, PCT Pub. Date May 28, 2020.
Claims priority of application No. 10 2018 129 209.0 (DE), filed on Nov. 20, 2018.
Prior Publication US 2021/0384170 A1, Dec. 9, 2021
Int. Cl. H01L 25/075 (2006.01); H01L 33/10 (2010.01); H01L 33/58 (2010.01); H01L 33/62 (2010.01)
CPC H01L 25/0753 (2013.01) [H01L 33/10 (2013.01); H01L 33/58 (2013.01); H01L 33/62 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A multi-pixel display device, comprising:
an integrated circuit,
a plurality of light-emitting semiconductor chips disposed on the integrated circuit,
a display area having a plurality of pixels, each of the light-emitting semiconductor chips being associated with one of the plurality of pixels,
a light-directing element disposed between the plurality of light-emitting semiconductor chips and the display area and adapted to direct light of each light-emitting semiconductor chip from the plurality of light-emitting semiconductor chips to its associated pixel,
wherein
the associated pixel to which the light is directed is arranged laterally offset above the light-emitting semiconductor chip associated therewith,
the light-directing element having a top side and a bottom side comprises a plurality of light-guiding structures each having an in-coupling area at the bottom side and an out-coupling area at the top side to the associated pixel, and
the light-emitting semiconductor chip is arranged overlapped to the in-coupling area of the light guiding structure comprising the out-coupling area to the associated pixel.