Patent ID: 11906871
Assignee: E INK CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An electronic paper package structure, comprising:
a substrate;
an electronic ink layer having four corners, disposed on the substrate;
a cover plate configured to cover the electronic ink layer, wherein the electronic ink layer is located between the substrate and the cover plate, and a groove is defined by a lower surface of the cover plate, a side surface of the electronic ink layer and an upper surface of the substrate;
a plurality of water vapor barriers disposed in the groove and protruding from a side surface of the cover plate; and
a sealant that fills the groove to cover the water vapor barriers, wherein the groove comprises a first area and a second area, and the water vapor barriers are only disposed in the first area of the groove, the first area corresponding to the four corners of the electronic ink layer.