US 12,108,620 B2
Foldable display device with backplate slots
Hyun Woo Koo, Redmond, WA (US); Kabir Siddiqui, Sammamish, WA (US); Camilo Leon, Redmond, WA (US); Blake Reza Toicerkani, Wildomar, CA (US); Ying Zheng, Sammamish, WA (US); and Rajesh Manohar Dighde, Redmond, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Feb. 11, 2021, as Appl. No. 17/174,204.
Claims priority of provisional application 63/113,776, filed on Nov. 13, 2020.
Prior Publication US 2022/0158124 A1, May 19, 2022
Int. Cl. H10K 50/84 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/84 (2023.02) [H10K 2102/311 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display device foldable through a range of degrees at a folding portion, the display device comprising:
a rear cover;
a cover glass layer comprising the folding portion and extending from a left side of the display device through the folding portion to a right side of the display device, the cover glass layer being a topmost layer of the display device, wherein the folding portion is defined by a left arcuate tapering transition portion that joins a left side portion of the cover glass layer with a thinned portion that is centered in the folding portion, and the folding portion is defined by a right arcuate tapering transition portion that joins a right side portion of the cover glass layer with the centered thinned portion, wherein the left side portion and the right side portion of the cover glass layer have a first thickness, and the centered thinned portion has a second thickness less than the first thickness to facilitate folding of the cover glass layer;
a light-emitting layer between the rear cover and the cover glass layer; and
a backplate between the rear cover and the light-emitting layer, wherein the backplate comprises a plurality of backplate slots that each extend from an upper surface of the backplate through a lower surface of the backplate to facilitate bending of the backplate.