ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,941, issued on May 5, was assigned to E Ink Holdings Inc. (Hsinchu, Taiwan).
"Scroll device and scrollable display" was invented by Hsing-Kai Wang (Hsinchu, Taiwan), Chia-Chun Yeh (Hsinchu, Taiwan) and Chen-Chu Tsai (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A scrollable device including a fixture, a flexible display panel and a scroll device having a roller, a roller end cap and a torsion spring is provided. One side of the flexible display panel is connected to the fixture, while the other side is connected to the cylindrical surface of the roller. The roller end cap is rotatably disposed on the end part of the roller, and the t...