The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Jan. 14, 2022
E Ink Holdings Inc., Hsinchu, TW;
Shu-Fen Tsai, Zhubei, TW;
Hsien-Yi Hsiao, Hsinchu, TW;
Ming-Kai Chuang, Zhubei, TW;
Puru Howard Shieh, Hsinchu, TW;
E INK HOLDINGS INC., Hsinchu, TW;
Abstract
An electrophoretic display device includes a backplane structure, a buffer layer, a spacer wall, a display medium, an upper substrate and an upper electrode. The backplane structure includes a lower substrate, a transistor formed on the lower substrate, and a lower electrode electrically connected to the transistor. The buffer layer is disposed on the backplane structure. The spacer wall is disposed on the buffer layer and forms a closed pattern. The display medium is disposed in the closed pattern. The display medium includes an electrophoretic medium and a plurality of electrophoretic particles dispersed in the electrophoretic medium. The upper substrate is disposed on the spacer wall and the display medium. The upper electrode is disposed between the upper substrate and the spacer wall.